EP3710907A1

EP3710907A1 - Fitting device and retrofitting method

Info

Publication number: EP3710907A1
Application number: EP18830401.8A
Authority: EP
Inventors: Kai Huck
Original assignee: Aquis Systems AG
Current assignee: Aquis Systems AG
Priority date: 2017-12-20
Filing date: 2018-12-10
Publication date: 2020-09-23
Also published as: CN111566585B; DE102017130684A1; MX2020006606A; CN111566585A; US11454995B2; CA3086393A1; US20200333812A1; WO2019121113A1

Abstract

To increase safety, a fitting device (A) for discharging mixed water is proposed, comprising a first feed line (1) for supplying hot water and a second feed line (2) for cold water, wherein the first and the second feed lines (1, 2) lead into a mixing chamber (10) for mixing cold and hot water, wherein a first shut-off device (5) for controlling or shutting off the flow from the first feed line (1) to the mixing chamber (10) is provided, wherein the first shut-off device (5) has a temperature-sensitive element (11) for controlling the flow from the first feed line subject to the temperature, wherein the second feed line (2) has an infeed into the mixing chamber (10) that is formed independently of the first shut-off device (5), wherein the mixing chamber (10) has an outlet line (12) for the outflow of the mixed water, wherein a temperature setting device (4) for setting the temperature of the mixed water is provided.

Description

"Fitting device and retrofitting method"

The invention relates to a fitting device, in particular a household or sanitary fitting, and a retrofit method for retrofitting the corresponding fitting.

From the prior art, various fittings for

Setting the water temperature known. In conventional Thermostatmischbatterien a so-called regulating piston is connected between the hot water and the cold water inlet, the double-sided, i. for hot water and cold water inlet, is provided with conical or frusto-conical closure elements and thus can be moved back and forth between the hot water inlet and the cold water inlet. Depending on the positioning, the regulating piston adjusts in this way whether the mixed water that is finally discharged from the fitting contains proportionally more cold water or more hot water, ie is warmer or colder. In addition, the regulating piston is coupled to a temperature-sensitive element, so that when a certain temperature is exceeded, less hot water and, instead, more cold water is added to the mixing water.

The object of the invention is a fitting device

which can offer a higher level of safety and improved scald protection.

The object is achieved, starting from a fitting device of the type mentioned, by the features of claim 1 and of claim 13.

The measures mentioned in the dependent claims advantageous embodiments and modifications of the invention are possible.

The fitting device according to the invention can be used for example as a sanitary fitting or household fitting. It serves to deliver mixed water, with an operator the Quantity and temperature of the mixed water to be delivered to the

Can adjust the valve. First, the fitting device according to the invention comprises a first supply line for the supply of

Hot water and a second supply line for supplying cold water. Both supply lines, so the 1st and the 2nd

Supply line, open into a mixing chamber, so that hot and cold water can mix in it to produce mixed water of a certain temperature can.

In particular, the invention is characterized

Armaturvorrichtung characterized in that a first shut-off device for controlling or shutting off the flow from the 1.

Supply line is provided in the mixing chamber. In this case, the first shut-off device on a temperature-sensitive element to the flow from the first supply line in dependence on the

Temperature control, especially the flow with

decreasing temperature. This 1. shut-off device controls only the flow of the first supply line, so the hot water supply. It is further distinguished by the fact that the second supply line has an inlet to the mixing chamber, which is formed independently of the first shut-off device. In contrast to the prior art is thus only the

Hot water flow regulated via the first shut-off device.

The mixing chamber, in turn, accordingly has an outlet line for draining the mixed water from the fitting device. Further, a temperature adjusting device for adjusting the temperature of the mixed water is provided so that the user or the operator can set the temperature of the mixed water to a desired value. In the fitting device according to the invention, this temperature adjustment device can be designed such that it:

- either only the inflow from the 1st supply line

while the inflow from the 2nd supply line remains independent of the temperature setting device,

- or both the inflow from the 1st and from the 2nd.

Supply line in relation to each other can set to for example, a constant volume flow over the

To get output line.

In the preferred embodiment, the inflow from FIG. 1 will only be achieved by the temperature adjusting device.

Supply line, so only the hot water supply

set.

By the fitting device according to the invention, the safety can be increased in any case in particular. It can, for example, in the water flow to pressure fluctuations or temperature fluctuations, for example in a

Cold water failure, with pressure fluctuations in the

Cold water line or overall to temperature fluctuations, and be it because of control problems with a connected to the heating of the water heat pump or another

Heat supply system. In this way, an effective and direct scalding protection can be achieved, since solely on the basis of a measurement on the mixed water on the hot water supply (1st supply line) is accessed and only the hot water supply is controlled. In addition, the invention also allows a space-saving implementation within an existing fitting device.

Advantageously, the setting of the temperature is more uniform and subject to lower fluctuations, since only the hot water is accessed and only one parameter (the inflow amount) of the hot water is controlled. First of all, this is not necessarily accompanied by the fact that the amount of supplied cold water is also changed.

It is conceivable, as already shown above, in one embodiment of the invention, the

Temperature adjustment device in series with the 1.

Shut off device. In this way, both, so the 1st shut-off and the

Temperature adjustment, operate independently, and determine both devices through the

Series connection then according to the water temperature in the Output line. Even if the user uses the temperature adjuster to set a very high water temperature, which is higher than that above the 1.

Shut-off device predetermined maximum temperature, the temperature of the mixed water is still on the permissible

Regulated maximum temperature. This version has the

Advantage that the user has temperature settings in the

Essentially in the usual way, without being affected by another attitude of the 1.

Shut-off would fundamentally change, at least, as long as the maximum temperature that was set at the 1st shut-off device is not exceeded.

However, it is also conceivable to couple the temperature setting device and the first shut-off device with each other.

For example, the first supply line can be shut off via a valve which has a closure body which presses against a seal. The position of the seal with respect to the closure body can over the

Temperature setting be adjusted by the temperature setting device is specified as how much water passes through the first supply line into the mixing chamber, that is, how high the proportion of hot water relative to the

Cold water content is. In addition, the position of the same closure body with respect to the seal changes in that when the water is too hot, the first shut-off of the

Closing body moves until it comes with the seal in the stop and the hot water supply on the first

Supply line shut off. This measure in turn has the

Advantage that a particularly compact design is possible.

In a preferred embodiment of the invention, the first shut-off device comprises an expansion element as

Temperature-sensitive element and a piston with a closure body coupled thereto, so that upon expansion or

Contraction of the expansion element of the piston is displaced, wherein the piston relative to a piston seat seal is mounted so that the piston shuts off the flow when he or the closure body pressed against the piston seat seal will / will, and will open when removed. Is a coupling of 1st shut-off device and

Provided temperature adjustment, so can the

Temperature adjustment, for example, the position of the piston seat seal pretend, i. the piston seat seal is displaced with respect to the piston so that the flow rate of water can be adjusted. The use of a

Dehnstoffelements distinguished in an advantageous manner

to the effect that the expansion element substantially covers the relevant for ordinary sanitary and household fittings temperature range in the scheme and a

provides immediate reaction within seconds, i. the expansion element can shut off in time to prevent scalding can. As a rule, this is the displacement of the coupled to the expansion element

Slider proportional to temperature

Volume increase.

In order to enable as precise a setting as possible or a scalding protection that is as precise as possible, it is advantageous for the temperature-sensitive element to be arranged or designed such that it exclusively determines the temperature in the mixing chamber. In the mixing chamber, the actual output water, which passes through the output line from the valve, is included, so that its actual temperature also

is crucial for scald protection. Basically, there may be pressure fluctuations in the cold water line and the temperatures of the supplied cold or hot water may vary. These too affect the temperature of the

Mixed water. For example, with a constant hot water supply at a constant temperature, the temperature of the mixed water may therefore vary because the pressure in the cold water supply line changes or because the temperature of the supplied cold water varies.

In the embodiment of the invention, the 2 opens.

Inlet pipe for directing cold water directly or without

Shut-off or other control device in the

Mixing chamber. As already shown above, then at Setting the temperature changed only one parameter, namely the amount of supplied hot water in relation to the supplied cold water. The scheme can thus be simplified as a whole.

In a further development of the invention, the 2.

Supply line, so the cold water supply, with a

Constant volume flow control must be provided so that only the temperature parameter on the supplied amount of hot water is controlled. In addition to a simplified temperature setting but this also allows any pressure fluctuations in the 2nd supply line, which can generally come about in the water lines due to external circumstances, can be compensated.

The piston, in turn, which can be displaced, for example, via the expansion element, can in turn be mounted in such a way that it moves in a direction of movement, in particular in the direction of movement

Piston seat gasket, working against an elastic element such as a spring. This way will

ensures that the piston when changing the

Temperature conditions not only respond quickly when the temperature increases, but also quickly at a temperature

Reducing the temperature is shifted back in the opposite direction. If necessary, the state can be restored directly and quickly before the regulation.

Advantageously, a structural unit comprises at least the first shut-off device and the piston and the piston-seat seal and the expansion element and the temperature-sensitive element and a return element designed in particular as the elastic element for returning the piston and / or the

Temperature setting. If necessary, the

Unit formed two-piece, the

Temperature adjustment as separately manageable or

second piece is realized. This ensures that for a realization of the function according to the invention or for retrofitting an exchange or disassembly of the entire Faucet or the various individual fittings components can be omitted. This is particularly advantageous in terms of retrofitting, maintenance / service or repair. Thus, the entire demountable and mountable assembly according to the invention taken in an advantageous manner, for example in the event of an impairment or malfunction, and a new

Building unit to be reinstated. This improves the economic operation of the sanitary fitting according to the invention.

Advantageously, in the embodiment of

Invention provided an adjustment for adjusting the flow of the mixed water from the fitting device. With this an operator can basically set how much water per unit of time or how much mixed water per unit time is discharged from the valve. In order for the amount of water discharged via the outlet line to remain basically constant, this setting device can also be equipped with a constant volume flow control or with a second flow control

Shut-off device for the second supply line

Collaborations. If, for example, the amount of hot water given into the mixing chamber is reduced, then

basically a larger amount of cold water to flow into the mixing chamber, so that a constant volume flow over the

Outlet line can flow out. Such a reduction of the hot water flow into the mixing chamber but can also be caused by the fact that, for example, in the

Connection with the 1st shut-off device selected

Maximum temperature is exceeded and the flowing out of the mixing chamber water is too warm. However, it is also conceivable to inform the operator of this circumstance by deliberately dispensing with a readjustment of the amount of water dispensed per unit of time and the user immediately notices that in this case less water flows out of the fitting. He can therefore immediately conclude that possibly the

Temperature control on the fitting is set incorrectly and he must set the temperature lower, because a

Maximum temperature is exceeded and thus one Safety regulation as the 1st shut-off had to intervene.

Basically, for the 2nd supply line a 2.

Shut-off device may be provided to the flow from the 2nd supply line, for example, depending on the

Adjustment to control. It is therefore also conceivable that the total flow through the armature device or the mixed water discharged from the mixing chamber, which finally flows out of the armature device, is not regulated in its entirety after the mixing process in the mixing chamber, but rather individually in the respective supply lines in front of the mixing chamber. If appropriate, this second shut-off device can also be coupled with a constant volume flow control.

The second shut-off device can in particular as

Flow restrictor be designed to set a minimum flow or be used in addition to the 2nd shut-off. A minimum inflow of cold water is needed so that the temperature is not too close to the maximum possible water temperature. The maximum possible

Water temperature is reached when only the

Hot water pipe is open, so in the mixing chamber

only or almost exclusively water from the

Hot water supply (1st supply line), but not or very little from the cold water line passes.

In a particularly advantageous manner, it is clear

Retrofit process for retrofitting a valve with a

Armature device according to the invention or according to one of the aforementioned embodiments, characterized in that an existing temperature-mixing device by the

Armature device is replaced, in particular

Advantageously, in the development of the invention, the fitting has a space in the interior (in the form of a space of a commercial mixing shaft) and the fitting device can be completely accommodated in this space. This measure represents a special cost advantage because I have to replace the entire valve. On Another advantage is that manufacturers already in series production existing valves are not complete

need to replace, but may also be able to retrofit.

Äusführunqsbeispiel

An embodiment of the invention is illustrated in the drawings and explained in more detail below, specifying further details and advantages. In detail show:

1 shows a sectional view of a sanitary fitting according to the

Invention,

2 shows an enlarged view of the fitting device

Fig. 1 and

Fig. 3: a schematic representation of a second

Sanitary fitting according to the invention.

Figure 1 shows a sanitary fitting A, which has a first and a second supply line 1, 2 for supplying hot and cold water. The inlet 1 via the hot water pipe can be controlled by a valve device 3, which forms on the one hand the temperature setting device 4 and on the other hand the first shut-off device 5 as a scalding protection. This device 3 comprises a piston 6 and a piston seat seal 7. The piston seat seal 7 couples to the temperature setting lever 8, which is rotatably mounted for adjustment. The maximum

possible angle of rotation of the temperature setting lever 8 is predetermined by a stop screw 9.

Preferably, the valve device 3 in a preferred second variant of the invention (as shown in Figure 3) realized as a separately manageable unit 3. At the in

Figure 3 illustrated second variant, the assembly 3 comprises two units, namely the temperature adjustment 4 as a separately manageable piece and as a second unit the remaining, above components. This ensures that, for example, when retrofitting or replacement or disassembly, the entire unit 3 dismantled without much effort and a new unit 3 can be re-assembled. As a result, it is not necessary to disassemble and reassemble the entire valve or all corresponding individual components. This is just from the point of view

Retrofit, maintenance / service or repair of great advantage.

Thus, the entire assembly 3 according to the invention in

taken advantageously, e.g. in the case of one

Impairment, and a new unit 3 are used again.

For example, the assembly 3 can be dismantled by a stopper screw 9 is released, so that the

Temperature setting lever 8 with the temperature setting 4 is solvable or can be removed from a sanitary fitting A. Subsequently or together with the temperature adjusting device 4, components of the fitting can then be used together

Shut-off device 5, piston 6, piston seat seal 7,

Dehnstoffelement 11, spring 13 and various seals 14, 15 are removed or removed as a unit 3 according to the invention. In the case of an impairment or a disturbance, a new, functioning or intact structural unit 3 can then be reassembled. This saves time and improves the

Economy of the invention.

As an alternative of the invention can also

Temperature adjustment device 4 have a separate valve with which the first supply line can be adjusted, i. in this case the works

Temperature adjustment device 4 decoupled from the first

Shut-off device 5.

The second supply line 2 (cold water) opens into a

Mixing chamber 10. With the mixing chamber 10 is a Expansion element 11 in conjunction, so that the heat of the liquid in the mixing chamber 10 can be transferred to the expansion element 11. The expansion element 11 in turn couples to the piston 6. With increasing increase in the temperature of the water in the mixing chamber 10 and the expansion element 11 is heated and expands more and more. The expansion element 11 is selected or adjusted so that when the temperature is too high, it pushes the piston 6 against the piston seat seal 7 and shuts off the inlet of the first supply line 1 into the mixing chamber 10. The supply of hot water is thus reduced or prevented, so that the water temperature in the discharge line 12, which is connected downstream of the mixing chamber 10, decreases.

The expansion element 11 expands when heated against the force of a spring 13. Upon cooling, the spring 13 ensures that the piston 6 is quickly removed again from the piston seat seal 7.

Seals are shown in Fig. 1 by the reference numerals 14, 15th

marked.

The volume flow through the output line 12 via the

Valve A is discharged, can be controlled via the adjustment device 16 in the form of a solenoid valve.

In addition, a second shut-off device 17 is provided, which is designed here as a rotary sleeve to control the flow of cold water.

FIG. 2 shows an enlarged view of a part of FIG

Armaturvorrichtung A. It shows in particular the space (B) in the interior for receiving the temperature-mixing device, in which a corresponding, space-saving fitting device A.

can be retrofitted without having to replace the remaining housing of an existing sanitary fitting. LIST OF REFERENCE NUMBERS

1 first supply line

2 second supply line

3 valve device

4 temperature input device

5 first shut-off device

6 pistons

7 Piston seat seal

8 temperature setting lever

9 stop screw

10 mixing chamber

11 expansion fabric

12 output line

13 spring

14, 15 seals

16 adjustment device

17 second shut-off device A sanitary fitting

B space

Claims

claims

1. fitting device (A), in particular sanitary fitting, for dispensing mixed water, comprising:

- A first supply line (1) for supplying warm water and a second supply line (2) for supplying cold

Water,

- wherein the first and the second supply line (1, 2) lead into a mixing chamber (10) for mixing cold and warm water,

- wherein a first shut-off device (5) for controlling and / or shutting off the flow from the first supply line (1) into the mixing chamber (10) is provided,

- Wherein the first shut-off device (5) a

temperature-sensitive element (11) in order to control the flow from the first supply line as a function of the temperature, in particular to reduce the flow with increasing temperature,

- Wherein the second supply line (2) has an inlet to

Mixing chamber (10), which is independent of the first

Shut-off device (5) is formed,

- wherein the mixing chamber (10) has an output line (12) for

Has flow of mixed water,

wherein a temperature adjusting device (4) is provided for adjusting the temperature of the mixed water.

2. fitting device (A) according to any one of the preceding claims, characterized in that the temperature adjusting device (4) in series with the first shut-off device (5) is connected.

3. Fitting device (A) according to any one of the preceding claims, characterized in that the temperature adjusting device (4) with the first shut-off device (5) is coupled to adjust the flow from the first supply line (1) in the mixing chamber (10) and / or to regulate.

4. fitting device (A) according to one of the aforementioned

Claims, characterized in that the first

Shut-off device (5) an expansion element (11) as

temperature-sensitive element and a piston (6) which is coupled to the expansion element (11), so that at

Expansion and / or contraction of the expansion element (11) of the piston (6) is displaced, wherein the piston (6) against a piston seat seal (7) is mounted so that the piston

(6) shuts off the flow when it is against the piston seat gasket

(7) is pressed and opens when it is removed.

5. fitting device (A) according to one of the aforementioned

Claims, characterized in that the temperature-sensitive element (11) is arranged and / or formed so that it determines only the temperature in the mixing chamber (10).

6. fitting device (A) according to one of the aforementioned

Claims, characterized in that the second supply line (2) opens directly and / or without shut-off and / or control device in the mixing chamber (10).

7. fitting device (A) according to one of the aforementioned

Claims, characterized in that the piston (6) is mounted so that it operates in a direction of movement, in particular in the direction of the piston seat seal (7) against an elastic element (13), in particular a spring.

8. fitting device (A) according to one of the aforementioned

Claims, characterized in that a structural unit (3) at least the first shut-off device (5) and / or the piston (6) and / or the piston seat seal (7) and / or the

Expansion element (11) and / or the temperature-sensitive element (11) and / or the elastic element (13) and / or the

Temperature adjustment device (4).

9. fitting device (A) according to one of the aforementioned

Claims, characterized in that an adjusting device (16) for adjusting the flow of the mixed water from the

Armaturvorrichtung is provided.

10. fitting device (A) according to one of the aforementioned

Claims, characterized in that a second

Shut-off device (17) is provided to control the flow from the second supply line (2), in particular in dependence on the adjusting device (16).

11. fitting device (A) according to one of the aforementioned

Claims, characterized in that a

Constant volume flow control device for setting a constant volume flow in the second supply line

is turned on.

12. fitting device (A) according to one of the aforementioned

Claims, characterized in that the second

Shut-off device (17) designed as a flow restrictor for setting a minimum flow and / or in addition to the second shut-off a flow limiter is provided for setting a minimum flow.

13. retrofit method for retrofitting a fitting with a fitting device (A) according to one of the preceding claims and / or the structural unit (3) by replacing the existing

Temperature mixing device through the fitting device and / or the assembly (3), wherein in particular the fitting a space (B) in the interior for receiving the

Having temperature mixing device and the

Artmaturvorrichtung and / or the assembly (3) is completely housed in the space.