WO2001004556A1 - Line voltage adaptive refrigerator - Google Patents
Line voltage adaptive refrigerator Download PDFInfo
- Publication number
- WO2001004556A1 WO2001004556A1 PCT/TR2000/000038 TR0000038W WO0104556A1 WO 2001004556 A1 WO2001004556 A1 WO 2001004556A1 TR 0000038 W TR0000038 W TR 0000038W WO 0104556 A1 WO0104556 A1 WO 0104556A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- line voltage
- defrost
- unit
- value
- compressor running
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/006—Defroster control with electronic control circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/30—Quick freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
- F25D2700/122—Sensors measuring the inside temperature of freezer compartments
Definitions
- the present invention relates to performing the defrosting process in refrigerators in accordance with the changes in the line voltage.
- Cooling in the refrigerators is provided by a heat exchange between the environment and the evaporator through which a fluid with a high heat transfer rate is passed. During the said heat exchange between the environment and the evaporator, a frost load is formed on the evaporator.
- This frost load accumulated on the evaporator is not desired as it reduces the heat transfer between the environment and the evaporator and thus leads to a lower cooling efficiency.
- the frost load formed on the evaporator is avoided by blowing warm air on the evaporator or by placing a heater on the evaporator or by a similar method.
- the defrosting periods in the refrigerators should be adjusted dynamically according to the user habits, environmental conditions and the input values given to the system. Adaptive defrosting is a known method.
- the adaptive defrosting process determines the necessary duration of the next defrosting cycle by comparing the realized defrosting cycle duration and the optimal defrosting cycle duration determined as the result of the experiments.
- the realized defrosting cycle is longer than the optimum period determined as the result of the experiments, it shows that an excessive amount of frost has accumulated on the evaporator and the necessary total compressor running period that will pass till the start of the next defrosting cycle is determined to be shorter than the previously determined defrosting period.
- the adaptive defrosting cycle makes the duration of defrosting cycle equal to the optimum duration.
- the changes occurring in the line voltage causes some problems in the performance of the defrosting process.
- the defrosting duration is longer and the adaptive defrosting process decides that an excessive amount of frost has accumulated on the evaporator and defines the necessary total compressor running period that will pass till the start of the next defrosting cycle to be shorter, thereby defrosting cycle starts before an expected amount of frost has accumulated on the evaporator, thus causes unnecessary energy consumption.
- the defrosting duration is shorter and the adaptive defrosting process decides that a small amount of frost has accumulated on the evaporator and defines the necessary total compressor running period that will pass till the start of the next defrosting cycle to be longer, which in turn causes the start of defrost after an amount of frost that is much more than the expected amount, has accumulated on the evaporator and this has a negative impact on the performance of the refrigerator.
- the object of the present invention is to realize the defrosting process in accordance with the line voltage in order to provide a reduction in the energy consumption and an improvement in the cooling performance of the refrigerator.
- Figure 1 is the control block diagram
- Figure 2 is the general view of the refrigerator.
- Control unit Direct current (DC) power supply unit
- the control unit (1) comprises the electronic memory elements, a micro processor and an A/D converter to process the input data.
- the control unit (1) controls the refrigerator according to a preloaded program in its microprocessor.
- the DC power supply unit (2) converts the source voltage obtained from the AC power supply to the DC voltage level that is required by the refrigerator control unit (1), driver unit (3), display unit (4), input unit (5), function selecting unit (6), temperature sensing unit (7) and the line voltage measuring unit (8).
- the display unit (4) shows the actual temperature values in the freezer and cooling compartments of the refrigerator.
- the function selecting unit (6) allows the user to make the temperature settings for the freezer and cooling compartments, and to choose the specific functions (e.g. quick frost, holiday, etc.).
- the said temperature values are sent to the control unit (1).
- the temperature sensing unit (7) comprises the temperature sensors in the freezer and cooling compartments.
- the driver unit (3) controls the compressor and the defrost heater, in line with the signals sent from the control unit (1).
- the input unit (5) detects whether the freezer or cooling compartment doors are open or closed.
- the line voltage measuring unit (8) continuously measures the line voltage and transfers the data to the control unit (1).
- the total compressor running time after defrost t n is calculated by adding the value obtained by multiplying the difference between the optimum defrost time t defo pt determined by experiments and the actual defrost time e ⁇ ) with a constant value K determined by the manufacturer, to the total compressor running time before defrost t n-1 without checking the line voltage first.
- t n is the total compressor running time planned after defrost.
- t n - ⁇ is the total compressor running time realized before defrost.
- t e fopt is the optimum defrost time.
- tdef(n) is the actual defrost time.
- K is the constant value.
- the total compressor running time which will be adaptive to the line voltage ty n is calculated by adding the value obtained by multiplying the difference between the square of the average line voltage value found by monitoring the line voltage during the defrost time using the line voltage measuring unit (8), and the square of the average line voltage value measured during the previous defrost cycle, with a constant value L determined by the manufacturer, to the above mentioned total compressor running time after defrost t n , that is calculated without regarding the line voltage.
- ty n is the compressor running time adaptive to the line voltage.
- t n is the compressor running time planned after defrost.
- V n is the average line voltage measured during defrost.
- V n- ⁇ is the average line voltage measured during the previous defrost cycle.
- L is the constant value.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU60450/00A AU6045000A (en) | 1999-07-13 | 2000-07-10 | Line voltage adaptive refrigerator |
DE60010898T DE60010898D1 (en) | 1999-07-13 | 2000-07-10 | MAINS VOLTAGE ADJUSTING REFRIGERATOR |
EP00946738A EP1203192B1 (en) | 1999-07-13 | 2000-07-10 | Line voltage adaptive refrigerator |
AT00946738T ATE267372T1 (en) | 1999-07-13 | 2000-07-10 | MAINS VOLTAGE ADJUSTABLE REFRIGERATOR |
TR2001/03798T TR200103798T2 (en) | 1999-07-13 | 2000-07-10 | Mains voltage compatible refrigerator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR9901628 | 1999-07-13 | ||
TR1999/01628 | 1999-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001004556A1 true WO2001004556A1 (en) | 2001-01-18 |
Family
ID=21622080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/TR2000/000038 WO2001004556A1 (en) | 1999-07-13 | 2000-07-10 | Line voltage adaptive refrigerator |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1203192B1 (en) |
AT (1) | ATE267372T1 (en) |
AU (1) | AU6045000A (en) |
DE (1) | DE60010898D1 (en) |
TR (1) | TR200103798T2 (en) |
WO (1) | WO2001004556A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004088223A1 (en) * | 2003-04-04 | 2004-10-14 | BSH Bosch und Siemens Hausgeräte GmbH | Method for power regulation of a defroster heater and refrigeration device with integrated defroster heating |
US11090473B2 (en) | 2009-12-18 | 2021-08-17 | Srgi Holdings, Llc | Skin treatment device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4400919A (en) * | 1981-04-17 | 1983-08-30 | Variform Plastics, Inc. | Mobile home skirting system |
US4653285A (en) * | 1985-09-20 | 1987-03-31 | General Electric Company | Self-calibrating control methods and systems for refrigeration systems |
US5237830A (en) * | 1992-01-24 | 1993-08-24 | Ranco Incorporated Of Delaware | Defrost control method and apparatus |
US5415005A (en) * | 1993-12-09 | 1995-05-16 | Long Island Lighting Company | Defrost control device and method |
US5765382A (en) * | 1996-08-29 | 1998-06-16 | Texas Instruments Incorporated | Adaptive defrost system |
-
2000
- 2000-07-10 AU AU60450/00A patent/AU6045000A/en not_active Abandoned
- 2000-07-10 TR TR2001/03798T patent/TR200103798T2/en unknown
- 2000-07-10 DE DE60010898T patent/DE60010898D1/en not_active Expired - Lifetime
- 2000-07-10 EP EP00946738A patent/EP1203192B1/en not_active Expired - Lifetime
- 2000-07-10 WO PCT/TR2000/000038 patent/WO2001004556A1/en active IP Right Grant
- 2000-07-10 AT AT00946738T patent/ATE267372T1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4400919A (en) * | 1981-04-17 | 1983-08-30 | Variform Plastics, Inc. | Mobile home skirting system |
US4653285A (en) * | 1985-09-20 | 1987-03-31 | General Electric Company | Self-calibrating control methods and systems for refrigeration systems |
US5237830A (en) * | 1992-01-24 | 1993-08-24 | Ranco Incorporated Of Delaware | Defrost control method and apparatus |
US5415005A (en) * | 1993-12-09 | 1995-05-16 | Long Island Lighting Company | Defrost control device and method |
US5765382A (en) * | 1996-08-29 | 1998-06-16 | Texas Instruments Incorporated | Adaptive defrost system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004088223A1 (en) * | 2003-04-04 | 2004-10-14 | BSH Bosch und Siemens Hausgeräte GmbH | Method for power regulation of a defroster heater and refrigeration device with integrated defroster heating |
US11090473B2 (en) | 2009-12-18 | 2021-08-17 | Srgi Holdings, Llc | Skin treatment device |
Also Published As
Publication number | Publication date |
---|---|
DE60010898D1 (en) | 2004-06-24 |
AU6045000A (en) | 2001-01-30 |
TR200103798T2 (en) | 2002-06-21 |
EP1203192A1 (en) | 2002-05-08 |
ATE267372T1 (en) | 2004-06-15 |
EP1203192B1 (en) | 2004-05-19 |
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