DE3432731A1 - Thermostatically controlled concealed fitting - Google Patents

Abstract

A description is given of a thermostatically controlled concealed fitting in which the preliminary shut-off valves simultaneously serve as quantity-regulating valves. For this purpose, an adjusting mechanism is provided via which the two quantity-regulating and preliminary shut-off valves can be actuated simultaneously and in the same direction. <IMAGE>

Description

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Description :

The invention relates to a thermostatically controlled concealed fitting with a housing, with one in a receiving space the housing arranged, thermostat insert regulating temperature constancy; with an inlet opening for cold water and an inlet opening for hot water; each with a pipe shut-off valve between the inlet opening for cold water and the thermostat insert as well as the inlet opening for hot water and the thermostat insert; with a facility for Setting the amount of mixed water flowing out.

Thermostatically controlled concealed fittings in the sanitary area are often separated from the mixed water outlet and the one there located closing valve arranged. In known fittings of this type, in which a quantity adjustment device is integrated is, the procedure is basically not different; the closing valve is seen in the direction of water flow behind the thermostatic valve. This means that in the hot water or cold water supply lines in addition to the shut-off valves Check valves must be installed. In addition, if the flow rate is small and the pressure difference is present The mixed temperature in the cold and hot water supply lines is only relatively poorly regulated.

The object of the present invention is to provide a thermostatically controlled concealed fitting of the type mentioned at the outset to design that separate check valves and separate valves for volume adjustment can be omitted.

This object is achieved in that the Pre-shut-off valves also serve as flow regulating valves and an adjustment mechanism is provided for this purpose, with both valves can be operated simultaneously and in the same direction.

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The fact that, according to the invention, the pilot shut-off valves at the same time are used as regulating valves, several effects are achieved: Because the shut-off valves from the thermostat insert upstream, i.e. the quantity control takes place before the thermostat is used, the conventional Check valves are not required. In the locked state, the housing of the concealed fitting is depressurized. With small Flow results in good temperature control.

The valves can be conventional sanitary stop valve tops _; Can therefore be taken from a large series at low cost. It is particularly advantageous if the valves are control disk valves. These are known to be particularly smooth and maintenance-free.

The adjustment mechanism can include:

a) a central gear which is in rotary connection with a volume adjustment handle;

b) for each valve at least one gear rocker, which is in rotary connection with the valve spindle and with the central gear meshes.

This adjustment mechanism is particularly robust and precise.

In most cases there are thermostatically controlled concealed fittings of the type that is of interest here, essentially mirror-symmetrical to a plane of symmetry .. Then it is recommended that the two gearwheel swing arms are designed point-symmetrically to the axis of rotation of the central gearwheel and are arranged. As a result, the opposite directions of movement at diametrically opposite circumferential points of the central gear are taken into account.

Generally located in the waterways between the

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First shut-off valves and a thermostat insert, more Inserts that accommodate, for example, a silencer and / or a dirt trap. In these cases the Gear rockers can be provided with recesses through which the silencer and / or dirt trap inserts are accessible are.

An alternative, particularly simple adjustment mechanism comprises:

a) a central gear which is in rotary connection with a volume adjustment handle;

b) a gearwheel for each valve, which is in rotary connection with the valve spindle and with the central gearwheel is connected via a toothed belt.

An exemplary embodiment of the invention is explained in more detail below with reference to the drawing; show it

1: a horizontal section through a thermostatically controlled concealed fitting;

Fig. 2: in a strong schematic representation, the adjusting device for actuating the flow regulating and shut-off valves, seen roughly from the section line II-II of Fig. 1.

In the housing 1 of the thermostatically controlled concealed fitting are a cold water inlet opening 2 (the symmetrical hot water inlet opening is not shown), a Cavity 3 for receiving a volume control and shut-off valve 4 and a silencer insert 5 with Dirt trap 6 (corresponding symmetrical elements in the hot water path are also not shown) and a Receiving space 7 for a thermostat insert 8 is provided. the

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Cold water inlet opening 2 is with the cavity 3 via a Housing channel 9, the cavity 3 with the receiving space 7 over a housing channel 10 connected.

The silencer insert 5 with dirt trap 6 and the thermostat insert 8 are known as such and do not need to be described further here.

The structure of the flow regulating and shut-off valve 4 is also known, although not in the function shown. It is a conventional upper part cartridge of a sanitary shut-off valve. In the illustrated Embodiment is the flow regulating and shut-off valve 4 designed as a control disk valve, which Particularly recommended for this application because of its ease of movement and robustness. It has a with (not illustrated) passage openings provided, first control disk 11, which is fixed with respect to the cartridge housing 12. A second one with passage openings (also not shown) The control disk 13 provided rests on the first control disk 11 and is via a plastic driver part 14 connected to a valve spindle 15. In a manner to be described, it is opposite the first control disk 13 rotatable so that the passage openings in the two control disks 11, 13 more or less overlap can be brought.

The thermostat insert 8 protrudes from the housing 1 Area surrounded by a socket 16, at the lower end of which a gear 17 is formed. The gear 17 meshes with two gear rockers 18, 19, which are rotationally locked on the valve spindles 15 of the two flow regulating and shut-off valves 4 are placed and secured by a snap ring 20. The arrangement and design of the gear swing arms 18, 19 is point-symmetrical to the axis of rotation A-A of the gear.

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The gear rockers 18, 19 are each provided with kidney-shaped recesses 21, 22 through which the Silencer inserts 5 are accessible.

The socket 16 has an inwardly facing annular flange 23, which is arranged between a stage of the thermostat insert 8 and a ring part 24, which in turn with an adjusting screw 27 is fixed on the thermostat insert 8. In this way, bush 16 and gear 17 are axially fixed. Annular shims 25 made of appropriate material on both sides of the annular flange 23 ensure a low-friction Twistability.

An amount adjusting lever 26 is provided with an annular mounting portion pushed over the socket 16 and fixed on this with an adjusting screw 28.

The arrangement is obviously such that by rotating the amount adjusting lever 26 about the axis A-A via the gear 17 and the gear rockers 18, 19 both flow regulating and pre-blocking valves 4 operated simultaneously and in the same direction can be.

For the sake of completeness, the temperature selection handle 29 and the rosette 30 are also shown in the drawing which the wall installation opening for the concealed fitting is covered is shown.

The water flow in the thermostatically controlled concealed fitting described is as follows:

Cold and hot water enter the housing 1 via the associated inlet openings 2 and flow via the channels 9 the flow control and shut-off valves 4 to. The amount of water passing through these valves 4 depends

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of the relative rotation of the two control disks 11, 13 and thus - according to the above statements - of the Rotary position of the volume adjustment handle 26 from. Cold and Hot water then flows in a known manner through the dirt traps 6 and the silencer inserts 5 to the thermostat insert 8, where they are brought together to form mixed water, whose temperature is kept constant according to the value set on the temperature selector handle. The mixed water then flows off via an opening (not shown) in the housing 1.

In normal operation, the valves 4 thus serve as flow regulating valves. However, should maintenance or repair work be carried out on the inserts 5, 8 or on the dirt traps 6 may be required, the valves 4 can be used as pre-shutoff valves. You can do this by means of the volume adjustment handle 26 simply closed. The cavities 3, 7 and 10 are then immediately depressurized, so that the inserts 5, and the dirt traps 6 attached to the insert 5 can be easily removed.

In a further exemplary embodiment, not shown, the adjustment mechanism controls the movement of the volume adjustment handle 26 transmits to the valve spindles 15, modified as follows: instead of the gear rockers 18, 19 are 15 small-diameter gears are placed on the valve spindles. These are connected to gear 17 via a toothed belt connected, which is formed on the socket 16. Possibly. can a single toothed belt enclosing all three gears can be used here.

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Claims (7)

1502.1 - / - Claims: 1. Thermostatically controlled concealed fitting with a Housing, with one in a receiving space of the housing arranged thermostat insert regulating temperature constancy; with an inlet opening for cold water and one Inlet opening for hot water; each with a shut-off valve between the inlet opening for cold water and the Thermostat insert as well as the inlet opening for hot water and the thermostat insert; with a facility for recruitment the amount of mixed water flowing out, characterized in that the shut-off valves (4) simultaneously as Flow regulating valves are used and for this purpose an adjusting mechanism (26, 16, 17, 18) is provided with which both valves (4) can be operated simultaneously and in the same direction. 2. Concealed fitting according to claim 1, characterized in that that the valves (4) are conventional upper parts of sanitary Shut-off valves are.
20th 3. Concealed fitting according to claim 2, characterized in that the valves (4) are control disk valves. 4. 'Concealed fitting according to one of claims 1 to 3, there- characterized in that the adjusting mechanism comprises: a) a central gear (17), which is equipped with a volume adjustment handle (26) is in rotary connection; b) for each valve (4) a respective gear rocker (18, 19) which is in rotary connection with the valve spindle (16) and meshes with the central gear (17). 5. Concealed fitting according to claim 4, characterized in that that the two gear rockers (18, 19) formed point-symmetrically to the axis of rotation (A-A) of the central gear (17) and are arranged. 1502.1 -2 - 6. Concealed fitting according to claim 4 or 5, in which in the waterways between the pipe shut-off valves and the Thermostat insert at least one silencer and / or Dirt trap insert is provided, characterized in that the gear rockers (19, 18) with recesses (21, 22) are provided through which the silencer and / or strainer inserts (5) are accessible. 7. Concealed fitting according to one of claims 1 to 3, there- characterized in that the adjusting mechanism comprises: a) a central gear (17), which is equipped with a volume adjustment handle (26) is in rotary connection; b) for each valve (4) a gearwheel which is in rotary connection with the valve spindle (16) and with the central one Gear (17) is connected via a toothed belt.