CA1145547A - Refrigerated showcase - Google Patents
Refrigerated showcaseInfo
- Publication number
- CA1145547A CA1145547A CA000372827A CA372827A CA1145547A CA 1145547 A CA1145547 A CA 1145547A CA 000372827 A CA000372827 A CA 000372827A CA 372827 A CA372827 A CA 372827A CA 1145547 A CA1145547 A CA 1145547A
- Authority
- CA
- Canada
- Prior art keywords
- showcase
- refrigerated showcase
- curtain
- curtains
- air flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
- A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
- A47F3/0439—Cases or cabinets of the open type
- A47F3/0469—Details, e.g. night covers
Abstract
REFRIGERATED SHOWCASE
ABSTRACT OF THE DISCLOSURE:
A refrigerated showcase characterized in that curtains super-posed on each other in a plurality of layers so that an air layer or layers may intervene therebetween, are equipped along a front surface of a path of a cold air flow for refrigerating goods within the showcase, across the front opening of the body of the refrigerated showcase.
ABSTRACT OF THE DISCLOSURE:
A refrigerated showcase characterized in that curtains super-posed on each other in a plurality of layers so that an air layer or layers may intervene therebetween, are equipped along a front surface of a path of a cold air flow for refrigerating goods within the showcase, across the front opening of the body of the refrigerated showcase.
Description
11~5547 The present invention relates to a refrigerated showcase, and more particularly to a refrigerated shiowcase of energy saving type that is favorably used in a super market or the like.
~leretofore, a refrigerated showcase in which a cold air flow is circulated along its bottom wall, rear wall and top wall and across its front opening to refrigerate the interior of the show-case, and preferably another cool air flow is circulated outslde of and along the circulating route of the cold air flow to prevent the cold air flow from being warmed up, has been known.
In the case where the above-mentioned type of refrigerated showcase is used in a super market or other shops for displaying and storing fresh goods or the like, however, after the shop has clogied at night, if the refrigerator of the refrigerated showcase is operated at the same condition as the operation during the busi-ness hours when the access to the interior ot` the showcase is necessary, then an unnecessary electric power will be consumed by the refrigerator. On the contrary, if the refrigerator is stopped in operation or is reset at a higher regulation point of tempera-ture, then because of inflow of a warm ambient air into the showcase through the front opening, the temperature at the interior of the showcase would be raised up to an undesirable extent. Therefore, it will be conceived to cover the front opening of the refrigerated showcase with a curtain after the shop has closed, for the purpose of protecting the goods within the showcase from being damaged and preventing the warm ambient air from entering the showcase to avoid temperature rise at the interior of the showcase e~en when the refrigerating capability of the refrigerator is weakened.
~lowever, if the curtain co~ering the front opening of the show-case is a single layer of curtain, a moisture in the atmospheric air will dew on the outside surface of the curtain contacting the ~'-i,.
11f~55~7 atmospheric air because of an extremely large temperature difference between the inside and outside surfaces of -the curtain, and hence waterdrops will f all along the curtain, resulti.ng in contamination of a passageway in front of the showcase or goods accommodated in the front portion of the showcase, If the curtain is made of a gas-permeable material in order to prevent such dewing on the surface of the curtain, then the atmospheric air will air the refrigerated showcase, resulting in fro~ting on the compressor or the like in the refrigerator, and this necessitates defrosting operations and thus lowers a r.efrigerating efficiency.
Therefore, it is one object of the present invention to provide an improved refrigerated showcase of energy saving type, provided with a simple structure for preventing temperature rise within the showcase after the shop has closed at night, perfectly achieving quality control for the goods within the showcase, and greatly saving an electric power for refrigerating the interior of the showcase.
According to one feature of the present invention, there is provided a refrigerated showcase in which curtains superposed on
~leretofore, a refrigerated showcase in which a cold air flow is circulated along its bottom wall, rear wall and top wall and across its front opening to refrigerate the interior of the show-case, and preferably another cool air flow is circulated outslde of and along the circulating route of the cold air flow to prevent the cold air flow from being warmed up, has been known.
In the case where the above-mentioned type of refrigerated showcase is used in a super market or other shops for displaying and storing fresh goods or the like, however, after the shop has clogied at night, if the refrigerator of the refrigerated showcase is operated at the same condition as the operation during the busi-ness hours when the access to the interior ot` the showcase is necessary, then an unnecessary electric power will be consumed by the refrigerator. On the contrary, if the refrigerator is stopped in operation or is reset at a higher regulation point of tempera-ture, then because of inflow of a warm ambient air into the showcase through the front opening, the temperature at the interior of the showcase would be raised up to an undesirable extent. Therefore, it will be conceived to cover the front opening of the refrigerated showcase with a curtain after the shop has closed, for the purpose of protecting the goods within the showcase from being damaged and preventing the warm ambient air from entering the showcase to avoid temperature rise at the interior of the showcase e~en when the refrigerating capability of the refrigerator is weakened.
~lowever, if the curtain co~ering the front opening of the show-case is a single layer of curtain, a moisture in the atmospheric air will dew on the outside surface of the curtain contacting the ~'-i,.
11f~55~7 atmospheric air because of an extremely large temperature difference between the inside and outside surfaces of -the curtain, and hence waterdrops will f all along the curtain, resulti.ng in contamination of a passageway in front of the showcase or goods accommodated in the front portion of the showcase, If the curtain is made of a gas-permeable material in order to prevent such dewing on the surface of the curtain, then the atmospheric air will air the refrigerated showcase, resulting in fro~ting on the compressor or the like in the refrigerator, and this necessitates defrosting operations and thus lowers a r.efrigerating efficiency.
Therefore, it is one object of the present invention to provide an improved refrigerated showcase of energy saving type, provided with a simple structure for preventing temperature rise within the showcase after the shop has closed at night, perfectly achieving quality control for the goods within the showcase, and greatly saving an electric power for refrigerating the interior of the showcase.
According to one feature of the present invention, there is provided a refrigerated showcase in which curtains superposed on
2~ each other in a plurality of layers so that an air layer or. layers may intervene therebetween, are equipped along a front surface of a path of a cold air flow for refrigerating goods within the show-case, across the front opening of the body of the showcase.
According to another feature of the present invention, there is provided a refrigerator showcase in which curtains superposed on each other in a plurality of layers with a spacer or spacers interposed between the adjacent curtains, are equipped along a front surface of a path of a cold air flow or refrigerating goods within the showcase, across the front opening of the body of the showcaseO
~1~55~7 Since the refrigerated showcase according to the present invention has the above-featured structure, in the case where the refrigerated showcase is used in a super market or other shops, after the shop has closed at night, the front surface of the passage of a cold air flow across the front opening of the showcase can be covered by the curtains in a plurality of layers, and thereby the goods within the showcase can be protected from being damaged externally and the warm ambient air can be prevented from entering the showcase. Therefore, even if the refri¢erating capability of the showcase is weakened during the out-of-business hours~ the temperature rise which may be otherwise caused within the show-case can be avoided.
Moreover, according to -the present invention, since the curtain equipped along a front surface of a path of a cold air flow for refrigerating goods within the showcase is composed of a pluralit~
of layers of curtains superposed on each other so that an air layer or layers may intervene therebetween, in addition to the effect of preventing a warm ambient air from entering the showcase by the respective layers of curtains, the intervening air layer can form a heat-insulating layer and thereby can prevent tempe~ature rise at the interior of the showcase. Also, owing to the existence of the intervening air layer, the temperature difference between the outer surface of the outermost curtain exposed to the ambient air and the inner surface of the same curtain delimiting the inter-vening air layer is greatly reduced, so that moisture in the ambient air would not dew on the outer surface of the outermost curtain. Accordlngly, the curtains can be made of a dense--gas-impermeable material, and as a result, there is no fear that the ambient air may be introduced into the showcase. Therefore, frosting would not occur on the compressor or the like in the ( 11f~5~'~7 refrigerator o~ the refrigerated showcase, hence defrosting operations become unnecessary~ and there is not a fear of lowering a refrigerating efficiency.
As described above, according to the present invention, since inflow of an ambient air into the refrigerated showcase is prevented to keep the interior of the showca.se refrigerated and the re~rig-erating capability of the compressor in the refrigerator of the refrigerated showcase is not degraded as by frosting, owing to the use of the plurality of the layers of curtains having an intervening air layer or layers therebetween, the working period of the compres-sor in the refrigerator during the out-of-business hours at night can be greatly shortened, and thereby an energy saving effect can be achieved.
The above-mentioned and other features, objects and advantages f the present invention will become more apparent by reference to the following description of preferred embodiments of the invention taken in conjunction with the accompanying drawings, wherein:
Figo 1 is a longitudinal cross-section view showing one example of a refrigerated showcase to which the present invention is applic-able, Figs. 2 through 7 are longitudinal cross-section view~ showing v~rious preferred embodiments of the refrigerated showcase according to the present invention, and J Figs. 8 and 9 are longitudinal cross-section views showing spacer portions of the curtains of different types to be preferably used according to the present invention.
Referring now to Fig. 1, reference numeral (1) designates a ~nown refrigerated showcase~ in which a cold air flow for refrig-erating goods within the showcase and another cool air flow for preventing temperature rise of the first said cold air flow are respectively circulated from suction ports (5), (5') along a lower I
11~55~7 edge of a front opening Or the st-owcase through ducts in a bottom wall, rear wall and top wall of the showcase and ejection ports (6), (6') along an upper edge of the front opening, back to the suction ports (5), ~5~) as shown by arrows a and b by the actions S of a refrigerator (2) and fans (3), (3~) contained in the refrig-erated showcase, and thereby goods accommodated within the showcase (I) can be refrigerated.
In a first preferred embodiment illustrated in Fig, 2, on a front hanging wall (7) for guiding a cold air flow of the ejection port (6) of the cold air flow for refrigerating goods within the showcase at the top of a front opening (4) of the showcase, are disposed curtain hangers (8) at a desired interval along the wi~th_ wise direction of the front opening, and these curtain hangers (8) are adapted to be detachably engaged with mount pieces such as eyelets provided along a top edge of a curtain as will be described later.
Reference numeral (9~ designates curtains made of a densely woven fabric having little gas-permeability, a synthesized resin sheet or like ma~erials, upper edges of a pair of front and rear curtains (9), (9), and on a surface of either one of the front and rear curtains (9) oppo~ed to the other curtain (9) are proyided spacers (10) so that an air layer may intervene between the front and rear curtains (9)~ (9). The spacer (10~ could be formed by sewing the fabric of the curtain in the form of a tuck extending in the widthwise direction as shown in Fig. 8, or else it could be formed by securing a preliminarily shaped tuck piece (10~) onto ; the fabric of the curtain by sewing as shown in Fig. 9. In the latter case, a cord having a length equal to the width of the curtain could be used in place of the tuck piece (10~). It is to be noted that the curtains (9) could be used in a multl-layer form consisting of three or more layers.
5~7 In a s~per market or other shops where the above-mentioned refrigerated showcase is installed, when the business has terminated at night, the mount pieces provided along the top edges of the curtains (9) are engaged with the curtain hangers (8) disposed on S the front hanging wall (7) o~ the ejection port ~6) of the cold air flow for refrigerating goods within the showcase so that the path of the cold air flow for refrigerating goods within the showcase is covered by the curtains (9) as shown in Fig. 2, lighting lamps in the shop and within the refrigerated showcase are put out, a thermostat for the refrigerator (2) disposed on its downstream side within the duct of the cold air flow is switched from a thermostat for daytime use (11) whose preset temperature is as low as - 3 C
- 2C to another thermostat for night use (12) whose preset tem-perature is higher than that of the daytime thermostat (11) such as, for example, 2C ~ 3C, and the fan (3') in the outside duct for the cool air flow is stopped in operation.
In the above-described embodiment illustrated in Fig. 2, owing to the provision of the double curtains (9), (9), the ambient air is prevented from entering the interior of the showcase, also the interior of the showcase is kept refrigerated by the heat-insulation effect of the air layer formed between the curtains (9), (9), and thereby degradaticn in quality of the goods within the refrigerated showcase can be preventedO In addition~ the intervening air layer between the above-described curtains (9), (9) takes an intermediate 2~ temperature between the room temperature in the shop and the tem-perature within the showcase, so that the temperature difference between the inner and outer surfaces of the outermost curtain faced to the passageway in front of the showcase is greatly reduced, and hence moisture in the ambient air would not dew on the outer surface of the outermost curtain. Moreover~ since the inflow of the ambient ll~S5'~7 air to the interior of the showcase is prevented by the curtain~
(9), (9) as described above, frosting on the refrigerator (2) or the like would not occur, hence defrosting operations become unnecessary, and so, the refrigeratin~ capability of the refrigerator (2) would not be degraded.
It is to be noted that if the path of the cold air flow for refrigerating goods within the showcase is entirely covered by equipping the curtains (9) as ~escribed above to prevent the ambient air from entering the showcase and to keep the interior of the showcase refrigerated and lighting lamps within the showcase are put out, the temperature within the showcase would be excessively lowered. However, by switching the thermostat for- the refrigerator (2) to another thermostat for night use (12) whose preset tempera-ture is adjusted higher than the preset temperature of the normal thermostat for use during the business hours as described above, the temperature within the showcase would not be lowered to an unnecessary extent, hence a pause time of the compressor in the refrigerator (2) becomes longer, and thereby an energy-saving effect can be achieved.
In a large scale oi shop such as a super market, a large number of refrigerated showcases are placed in juxtaposition, and in the respective showcases are equipped individual thermo-control devices for the operation during the business hours. Therefore, it is troublesome to change the preset temperatures of the respective thermo-control devices upon termination of the business hours and to again reset the temperature to the original preset temperature upon recommencement of the business. However, as described in connection to the first preferred embodiment, by separately mounting another thermostat (12) ~or use during the out-of-business hours at night within the refrigerated showcase (1) and merely switching 1~ ~ 554'~7 the circuit for the t~lermostat to the second thermostat (12) during the out-of-business hours at night, the operation for chang-ing the preset temperature can be achieved in a simple manner. In this connection, convenience will be attained by making provision such that the thermo-control device for business hours and the thermo-control device for out-of-business hours may be switched jointly with switching on and off oC a lighting device for displayed goods within the showcase, so that when the lighting device has been put out upon the out-of-business hours the thermo-control device for out-of-business hours having a higher preset temperature may be operated, whereas when the lighting device has been put on for lighting the goods within the showcase upon recommencement of business, the thermo-control device for business hours having a lower preset temperature may be operated. Moreover, with regard to the aforementioned thermo-control device for out-of-business hours, the operation will become more convenient if a single such device is equipped so as to operate in common to a plurality of refrigerated showcases.
In the second preferred embodiment illustrated in Fig 3, the 2G present invention is applied to a refrigerated showcase, in which the path of a cold air flow for refrigerating goods within,the showcase is not substantially vertical as is the case with the refrigerated showcase illustrated in Figs. 1 and 2, but is inclined.
In this case, because of the illustrated geometrical configuration, there is no need to provide spacers (10) between the curtains 19).
In this figure, component parts equivalent to those of the first preferred embodiment shown in Fig. 2 are given like reference numerals.
In the third and fourth preferred embodiments illustrated in Figs. 4 and 5, respectively7 the present invention is applied to a refrigerated .showcase of the type, in which only a cold air flow for refrigerating goods within the showcase is circulated through a single duct provided along the inside of the outer wall of the refrigerated showcase witllout employing another duc-t for circulating another cool air flow for preventing the cold air flow from being warmed up. In the refrigerated showcase shown in Fig. 4, the path -of the cold air flow across the front opening is substantially vertical as is the case with the refrigerated showcase shown in ~ig. 2, but in the refrigerated showcase shown in Fig. 5, the path of the cold air flow across the front opening is not substantially vertical as is the case with the refrigerated showcase shown in Fig. 3. In these figures, component parts equivalent to those of the preceding preferred embodiments shown in Figs. 2 and 3 are given like reference numerals.
In the fifth preferred embodiment illustrated in Fig. 6, the present invention is applied to a refrigerated showcase of the type, in which a primary cool air flow for preventing the cold air ~low from being warmed up and a secondary cool air flow for the same purpose are circulated in parallel and around the path of the cold air flow for refrigerating goods within the showcase, and hence the curtains (9) are equipped in triple layers. In this figure, reference numerals (6") and (5") designate a suction port and an ejection port of the secondary cool air flow. In the illustrated embodiment, after the shop has closed, the curtains (9) are equip-ped along the front surface of the path o~ a cold air flow for refrigerating goods within the showcase, lighting lamps within the showcase are put out and the thermostat (11) is switched to the thermostat for night use (12). In addition, a fan (3') disposed within the duct for the primary cool air flow that is located
According to another feature of the present invention, there is provided a refrigerator showcase in which curtains superposed on each other in a plurality of layers with a spacer or spacers interposed between the adjacent curtains, are equipped along a front surface of a path of a cold air flow or refrigerating goods within the showcase, across the front opening of the body of the showcaseO
~1~55~7 Since the refrigerated showcase according to the present invention has the above-featured structure, in the case where the refrigerated showcase is used in a super market or other shops, after the shop has closed at night, the front surface of the passage of a cold air flow across the front opening of the showcase can be covered by the curtains in a plurality of layers, and thereby the goods within the showcase can be protected from being damaged externally and the warm ambient air can be prevented from entering the showcase. Therefore, even if the refri¢erating capability of the showcase is weakened during the out-of-business hours~ the temperature rise which may be otherwise caused within the show-case can be avoided.
Moreover, according to -the present invention, since the curtain equipped along a front surface of a path of a cold air flow for refrigerating goods within the showcase is composed of a pluralit~
of layers of curtains superposed on each other so that an air layer or layers may intervene therebetween, in addition to the effect of preventing a warm ambient air from entering the showcase by the respective layers of curtains, the intervening air layer can form a heat-insulating layer and thereby can prevent tempe~ature rise at the interior of the showcase. Also, owing to the existence of the intervening air layer, the temperature difference between the outer surface of the outermost curtain exposed to the ambient air and the inner surface of the same curtain delimiting the inter-vening air layer is greatly reduced, so that moisture in the ambient air would not dew on the outer surface of the outermost curtain. Accordlngly, the curtains can be made of a dense--gas-impermeable material, and as a result, there is no fear that the ambient air may be introduced into the showcase. Therefore, frosting would not occur on the compressor or the like in the ( 11f~5~'~7 refrigerator o~ the refrigerated showcase, hence defrosting operations become unnecessary~ and there is not a fear of lowering a refrigerating efficiency.
As described above, according to the present invention, since inflow of an ambient air into the refrigerated showcase is prevented to keep the interior of the showca.se refrigerated and the re~rig-erating capability of the compressor in the refrigerator of the refrigerated showcase is not degraded as by frosting, owing to the use of the plurality of the layers of curtains having an intervening air layer or layers therebetween, the working period of the compres-sor in the refrigerator during the out-of-business hours at night can be greatly shortened, and thereby an energy saving effect can be achieved.
The above-mentioned and other features, objects and advantages f the present invention will become more apparent by reference to the following description of preferred embodiments of the invention taken in conjunction with the accompanying drawings, wherein:
Figo 1 is a longitudinal cross-section view showing one example of a refrigerated showcase to which the present invention is applic-able, Figs. 2 through 7 are longitudinal cross-section view~ showing v~rious preferred embodiments of the refrigerated showcase according to the present invention, and J Figs. 8 and 9 are longitudinal cross-section views showing spacer portions of the curtains of different types to be preferably used according to the present invention.
Referring now to Fig. 1, reference numeral (1) designates a ~nown refrigerated showcase~ in which a cold air flow for refrig-erating goods within the showcase and another cool air flow for preventing temperature rise of the first said cold air flow are respectively circulated from suction ports (5), (5') along a lower I
11~55~7 edge of a front opening Or the st-owcase through ducts in a bottom wall, rear wall and top wall of the showcase and ejection ports (6), (6') along an upper edge of the front opening, back to the suction ports (5), ~5~) as shown by arrows a and b by the actions S of a refrigerator (2) and fans (3), (3~) contained in the refrig-erated showcase, and thereby goods accommodated within the showcase (I) can be refrigerated.
In a first preferred embodiment illustrated in Fig, 2, on a front hanging wall (7) for guiding a cold air flow of the ejection port (6) of the cold air flow for refrigerating goods within the showcase at the top of a front opening (4) of the showcase, are disposed curtain hangers (8) at a desired interval along the wi~th_ wise direction of the front opening, and these curtain hangers (8) are adapted to be detachably engaged with mount pieces such as eyelets provided along a top edge of a curtain as will be described later.
Reference numeral (9~ designates curtains made of a densely woven fabric having little gas-permeability, a synthesized resin sheet or like ma~erials, upper edges of a pair of front and rear curtains (9), (9), and on a surface of either one of the front and rear curtains (9) oppo~ed to the other curtain (9) are proyided spacers (10) so that an air layer may intervene between the front and rear curtains (9)~ (9). The spacer (10~ could be formed by sewing the fabric of the curtain in the form of a tuck extending in the widthwise direction as shown in Fig. 8, or else it could be formed by securing a preliminarily shaped tuck piece (10~) onto ; the fabric of the curtain by sewing as shown in Fig. 9. In the latter case, a cord having a length equal to the width of the curtain could be used in place of the tuck piece (10~). It is to be noted that the curtains (9) could be used in a multl-layer form consisting of three or more layers.
5~7 In a s~per market or other shops where the above-mentioned refrigerated showcase is installed, when the business has terminated at night, the mount pieces provided along the top edges of the curtains (9) are engaged with the curtain hangers (8) disposed on S the front hanging wall (7) o~ the ejection port ~6) of the cold air flow for refrigerating goods within the showcase so that the path of the cold air flow for refrigerating goods within the showcase is covered by the curtains (9) as shown in Fig. 2, lighting lamps in the shop and within the refrigerated showcase are put out, a thermostat for the refrigerator (2) disposed on its downstream side within the duct of the cold air flow is switched from a thermostat for daytime use (11) whose preset temperature is as low as - 3 C
- 2C to another thermostat for night use (12) whose preset tem-perature is higher than that of the daytime thermostat (11) such as, for example, 2C ~ 3C, and the fan (3') in the outside duct for the cool air flow is stopped in operation.
In the above-described embodiment illustrated in Fig. 2, owing to the provision of the double curtains (9), (9), the ambient air is prevented from entering the interior of the showcase, also the interior of the showcase is kept refrigerated by the heat-insulation effect of the air layer formed between the curtains (9), (9), and thereby degradaticn in quality of the goods within the refrigerated showcase can be preventedO In addition~ the intervening air layer between the above-described curtains (9), (9) takes an intermediate 2~ temperature between the room temperature in the shop and the tem-perature within the showcase, so that the temperature difference between the inner and outer surfaces of the outermost curtain faced to the passageway in front of the showcase is greatly reduced, and hence moisture in the ambient air would not dew on the outer surface of the outermost curtain. Moreover~ since the inflow of the ambient ll~S5'~7 air to the interior of the showcase is prevented by the curtain~
(9), (9) as described above, frosting on the refrigerator (2) or the like would not occur, hence defrosting operations become unnecessary, and so, the refrigeratin~ capability of the refrigerator (2) would not be degraded.
It is to be noted that if the path of the cold air flow for refrigerating goods within the showcase is entirely covered by equipping the curtains (9) as ~escribed above to prevent the ambient air from entering the showcase and to keep the interior of the showcase refrigerated and lighting lamps within the showcase are put out, the temperature within the showcase would be excessively lowered. However, by switching the thermostat for- the refrigerator (2) to another thermostat for night use (12) whose preset tempera-ture is adjusted higher than the preset temperature of the normal thermostat for use during the business hours as described above, the temperature within the showcase would not be lowered to an unnecessary extent, hence a pause time of the compressor in the refrigerator (2) becomes longer, and thereby an energy-saving effect can be achieved.
In a large scale oi shop such as a super market, a large number of refrigerated showcases are placed in juxtaposition, and in the respective showcases are equipped individual thermo-control devices for the operation during the business hours. Therefore, it is troublesome to change the preset temperatures of the respective thermo-control devices upon termination of the business hours and to again reset the temperature to the original preset temperature upon recommencement of the business. However, as described in connection to the first preferred embodiment, by separately mounting another thermostat (12) ~or use during the out-of-business hours at night within the refrigerated showcase (1) and merely switching 1~ ~ 554'~7 the circuit for the t~lermostat to the second thermostat (12) during the out-of-business hours at night, the operation for chang-ing the preset temperature can be achieved in a simple manner. In this connection, convenience will be attained by making provision such that the thermo-control device for business hours and the thermo-control device for out-of-business hours may be switched jointly with switching on and off oC a lighting device for displayed goods within the showcase, so that when the lighting device has been put out upon the out-of-business hours the thermo-control device for out-of-business hours having a higher preset temperature may be operated, whereas when the lighting device has been put on for lighting the goods within the showcase upon recommencement of business, the thermo-control device for business hours having a lower preset temperature may be operated. Moreover, with regard to the aforementioned thermo-control device for out-of-business hours, the operation will become more convenient if a single such device is equipped so as to operate in common to a plurality of refrigerated showcases.
In the second preferred embodiment illustrated in Fig 3, the 2G present invention is applied to a refrigerated showcase, in which the path of a cold air flow for refrigerating goods within,the showcase is not substantially vertical as is the case with the refrigerated showcase illustrated in Figs. 1 and 2, but is inclined.
In this case, because of the illustrated geometrical configuration, there is no need to provide spacers (10) between the curtains 19).
In this figure, component parts equivalent to those of the first preferred embodiment shown in Fig. 2 are given like reference numerals.
In the third and fourth preferred embodiments illustrated in Figs. 4 and 5, respectively7 the present invention is applied to a refrigerated .showcase of the type, in which only a cold air flow for refrigerating goods within the showcase is circulated through a single duct provided along the inside of the outer wall of the refrigerated showcase witllout employing another duc-t for circulating another cool air flow for preventing the cold air flow from being warmed up. In the refrigerated showcase shown in Fig. 4, the path -of the cold air flow across the front opening is substantially vertical as is the case with the refrigerated showcase shown in ~ig. 2, but in the refrigerated showcase shown in Fig. 5, the path of the cold air flow across the front opening is not substantially vertical as is the case with the refrigerated showcase shown in Fig. 3. In these figures, component parts equivalent to those of the preceding preferred embodiments shown in Figs. 2 and 3 are given like reference numerals.
In the fifth preferred embodiment illustrated in Fig. 6, the present invention is applied to a refrigerated showcase of the type, in which a primary cool air flow for preventing the cold air ~low from being warmed up and a secondary cool air flow for the same purpose are circulated in parallel and around the path of the cold air flow for refrigerating goods within the showcase, and hence the curtains (9) are equipped in triple layers. In this figure, reference numerals (6") and (5") designate a suction port and an ejection port of the secondary cool air flow. In the illustrated embodiment, after the shop has closed, the curtains (9) are equip-ped along the front surface of the path o~ a cold air flow for refrigerating goods within the showcase, lighting lamps within the showcase are put out and the thermostat (11) is switched to the thermostat for night use (12). In addition, a fan (3') disposed within the duct for the primary cool air flow that is located
3 outside of the duct for the cold air flow for refrigerating goods _ 9 _ ~1~5547 within the showca.se, is stopped. Another fan (3") disposed within the duct for the secondary cool air flow could be stopped or operated depending upon the necess:ity. In this figure, compo-nent parts equivalent to those of the preceding embodiments are given like reference numerals.
In the case where two or more refrigerated showcases are installed in juxtaposition and connected to each other, sometimes one set of multi-layer curtains having a width substantially equal to the sum of the widths of the connected showcases are commonly equipped across the entire front opening of the jointed showcase as shown in Fig. 7.
While the invention has been described above in connection to its preferred embodiments, it is a matter of course that the invention should not be limited only to such preferred embodiments, since various changes in design can be made without departing the spirit of the present invention.
_ 10 --
In the case where two or more refrigerated showcases are installed in juxtaposition and connected to each other, sometimes one set of multi-layer curtains having a width substantially equal to the sum of the widths of the connected showcases are commonly equipped across the entire front opening of the jointed showcase as shown in Fig. 7.
While the invention has been described above in connection to its preferred embodiments, it is a matter of course that the invention should not be limited only to such preferred embodiments, since various changes in design can be made without departing the spirit of the present invention.
_ 10 --
Claims (4)
1. An open-type refrigerated showcase in which a cold air flow is circulated along the bottom, rear and top walls thereof and across a front opening for refrigerating goods dis-played within said showcase; characterized in that said refrigerated showcase is associated with a curtain assembly of multi-layer structure, which can be detachably equipped along the front surface of the path of said cold air flow across the front opening of said refrigerated showcase to form curtains superposed on each other in a plurality of layers with at least one air layer interposed therebetween.
2. An open-type refrigerated showcase as claimed in claim 1, characterized in that some of said curtains forming the curtain assembly are provided with at least one spacer thereon so that said at least one air layer between the curtains is formed when the curtain assembly is equipped to the refrigerated showcase.
3. An open-type refrigerated showcase as claimed in claim 2, characterized in that said at least one spacer is formed by sewing the curtain in the form of a tuck extending in the width-wise direction of the curtain.
4. An open-type refrigerated showcase as claimed in claim 2, characterized in that said at least one spacer is formed by securing a preliminarily-shaped tuck piece onto the curtain as by sewing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56015827A JPS57131969A (en) | 1981-02-06 | 1981-02-06 | Freeze refrigerated display cabinet |
| JP56-15827 | 1981-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1145547A true CA1145547A (en) | 1983-05-03 |
Family
ID=11899675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000372827A Expired CA1145547A (en) | 1981-02-06 | 1981-03-12 | Refrigerated showcase |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4400046A (en) |
| JP (1) | JPS57131969A (en) |
| CA (1) | CA1145547A (en) |
| DE (1) | DE3111110A1 (en) |
| GB (1) | GB2092730B (en) |
| IT (1) | IT1137662B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2538886B1 (en) * | 1982-12-30 | 1985-09-20 | Bonnet Ets | CLOSING DEVICE OR SCREEN FOR REFRIGERATED FURNITURE |
| DE8712220U1 (en) * | 1987-09-09 | 1987-10-22 | Remis Gesellschaft Fuer Entwicklung Und Vertrieb Von Technischen Elementen Mbh Koeln, 5000 Koeln, De | |
| JPH048830Y2 (en) * | 1988-03-18 | 1992-03-05 | ||
| GB2260951B (en) * | 1991-10-28 | 1994-08-24 | Robert William Hewitt | Movable seal for refrigerated vehicles |
| US5431490A (en) * | 1993-04-20 | 1995-07-11 | Edwards; Brian E. | Refrigerator/freezer door anti-convection current curtain |
| IT1263382B (en) * | 1993-06-28 | 1996-08-05 | Costan Spa | REFRIGERATED EXHIBITOR BENCH |
| US5501516A (en) * | 1994-11-17 | 1996-03-26 | Delaware Capital Formation Inc. | Universal modular apparatus for selectively forming curved concave and convex sections of a refrigerated display case |
| US6272875B1 (en) | 1997-01-31 | 2001-08-14 | White Consolidated Industries, Inc. | Glass dipping cabinet |
| US5974818A (en) * | 1997-01-31 | 1999-11-02 | White Consolidated Industries, Inc. | Low temperature static display |
| DE29902999U1 (en) * | 1999-02-19 | 2000-06-29 | Remis Gmbh | Cooling shelf |
| US6474983B1 (en) | 2001-04-30 | 2002-11-05 | Edward S. Robbins | Heated industrial curtain |
| US6783199B2 (en) * | 2001-07-10 | 2004-08-31 | John C. Parrott | Thermal barrier for a cabinet |
| DE102004008396A1 (en) * | 2004-02-20 | 2005-09-08 | Linde Kältetechnik GmbH & Co. KG | Refrigerator with night blind |
| WO2008111934A1 (en) * | 2007-03-12 | 2008-09-18 | Beverage-Air Corporation | Food preparation apparatus with sliding cover |
| US8398184B1 (en) | 2007-12-03 | 2013-03-19 | John Christian Benneche | Thermal barrier and constraining apparatus to retain cold air and constrain containers on a shelf fixture within a compartment |
| US11172770B2 (en) | 2013-09-20 | 2021-11-16 | Hussmann Corporation | High efficient night cover |
| CN109982613B (en) * | 2016-10-31 | 2021-01-26 | 开利公司 | Refrigerated sales cabinet |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1610244A (en) * | 1924-11-10 | 1926-12-14 | Bonaccolta Louis | Refrigerator |
| US2466286A (en) * | 1947-09-05 | 1949-04-05 | Ernest L Stultz | Refrigerator display case |
| US3128609A (en) * | 1962-05-31 | 1964-04-14 | Dual Jet Refrigeration Company | Refrigerated enclosure |
| US3186185A (en) * | 1963-01-03 | 1965-06-01 | Mccray Refrigerator Company In | Refrigerated display unit |
| US3232072A (en) * | 1965-01-08 | 1966-02-01 | Louis F Barroero | Shelf structure for refrigeration |
| US3403525A (en) * | 1967-02-03 | 1968-10-01 | Dual Jet Refrigeration Co | Defrost system for air curtain type refrigerated display case |
| US3542445A (en) * | 1969-01-23 | 1970-11-24 | Econo Cover Co | Closure member |
| US4109484A (en) * | 1977-03-03 | 1978-08-29 | Sullivan Company | Thermal protective barrier for open refrigerated compartment |
| US4141611A (en) * | 1977-12-16 | 1979-02-27 | Leon John N De | Cover for display type refrigerating cabinet |
| JPS5610673A (en) * | 1979-07-03 | 1981-02-03 | Hitoshi Karashima | Refrigerated cold storage display case |
| US4288992A (en) * | 1980-02-19 | 1981-09-15 | Eliason Corporation | Curtain for open front freezer or refrigerator |
-
1981
- 1981-02-06 JP JP56015827A patent/JPS57131969A/en active Pending
- 1981-03-12 CA CA000372827A patent/CA1145547A/en not_active Expired
- 1981-03-13 US US06/243,454 patent/US4400046A/en not_active Expired - Fee Related
- 1981-03-20 DE DE19813111110 patent/DE3111110A1/en not_active Ceased
- 1981-03-20 GB GB8108768A patent/GB2092730B/en not_active Expired
- 1981-04-07 IT IT20974/81A patent/IT1137662B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57131969A (en) | 1982-08-16 |
| GB2092730B (en) | 1984-08-15 |
| IT1137662B (en) | 1986-09-10 |
| IT8120974A0 (en) | 1981-04-07 |
| GB2092730A (en) | 1982-08-18 |
| DE3111110A1 (en) | 1982-08-12 |
| US4400046A (en) | 1983-08-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |