Constant-temperature water mixing valve suitable for zero-cold-water gas water heater

Abstract

The utility model provides a constant-temperature water mixing valve suitable for a zero-cold-water gas water heater, and belongs to the technical field of valves. The constant-temperature water mixing valve solves the problems that an existing constant-temperature water mixing valve for the water heater cannot obtain needed warm water in a mixing mode immediately, and use experience is affected. According to the constant-temperature water mixing valve suitable for the zero-cold-water gas water heater, the gas water heater is provided with a water return pump and a sensor with the internal water temperature monitoring function, the constant-temperature water mixing valve comprises a first valve body and a second valve body which are connected in an adjusting mode, and the first valve body is provided with a cold water inlet end, a water heater connecting end, a cold water backflow end and a first connecting end; the second valve body is provided with a hot water inlet end, a thermostatic valve element mounting end, a mixed water outlet end and a second connecting end, and a check valve assembly for preventing cold water from flowing back is arranged in the cold water backflow end. The utility model has the advantages that the water use experience of a user is improved, the temperature-regulating water flow is immediately discharged, and cold water of the return pipe and the cold water inlet end is prevented from flowing mutually.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology and relates to a thermostatic mixing valve, particularly a thermostatic mixing valve suitable for gas water heaters with zero cold water. Background Technology

[0002] In daily life, especially in winter, people often need to use hot water for washing, showering, etc. However, we have found that faucets usually need to release most of the cold water in the hot water pipes before they can release warm water, which takes a long time and leads to a waste of water resources.

[0003] This is because the existing mixing valve used in water heaters has a simple structure. After the hot and cold water is used, the water temperature in the hot water pipe drops until it becomes cold water. Therefore, when using water again, the hot and cold water cannot be directly mixed to obtain the required hot and cold water, which affects the user experience. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a thermostatic mixing valve suitable for zero-cold-water gas water heaters.

[0005] The purpose of this utility model can be achieved through the following technical solution: a thermostatic mixing valve suitable for a zero-cold-water gas water heater, wherein the gas water heater is equipped with a return water pump and a sensor for monitoring the internal water temperature, characterized in that the thermostatic mixing valve includes a valve body one and a valve body two connected by adjustment, the valve body one having a cold water inlet end, a water heater connection end, a cold water return end and a connection end one, the valve body two having a hot water inlet end, a thermostatic valve core mounting end, a mixing water outlet end and a connection end two, the connection end one extending into the connection end two and being positioned and connected by a U-shaped pin, both the valve body one and the valve body two having interconnected cold water flow channels, the inlet and outlet ends of the gas water heater being connected to the water heater connection end of the valve body one and the hot water inlet end of the valve body two respectively, the thermostatic valve core mounting end containing a thermostatic valve core assembly, the mixing water outlet end being connected to the cold water return end to form a return flow channel, and the cold water return end containing a check valve assembly to prevent cold water backflow.

[0006] In the above-mentioned thermostatic mixing valve suitable for zero-cold-water gas water heaters, the mixing outlet end and the cold water return end are connected through a return pipe.

[0007] In the above-mentioned thermostatic mixing valve suitable for zero-cold-water gas water heater, the outer end of the first connecting end has a connecting pipe extending into the second connecting end, the peripheral wall of the second connecting end has a groove for a U-shaped pin to be inserted, and a sealing ring is provided between the connecting pipe and the second connecting end.

[0008] In the above-mentioned thermostatic mixing valve suitable for zero-cold-water gas water heaters, nuts are connected to the cold water inlet, cold water return, and hot water inlet.

[0009] Compared with existing technologies, this thermostatic mixing valve for zero-cold-water gas water heaters has the advantages of improving the user's water experience, providing instant temperature-adjustable water flow, and preventing cross-contamination between the return pipe and the cold water inlet.

[0010] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Attached Figure Description

[0011] Figure 1 This is a 3D diagram of a thermostatic mixing valve suitable for zero-cold-water gas water heaters.

[0012] Figure 2 This is a cross-sectional view of a thermostatic mixing valve suitable for zero-cold-water gas water heaters.

[0013] Figure 3 This is a schematic diagram illustrating the application scenario of a thermostatic mixing valve suitable for zero-cold-water gas water heaters.

[0014] In the diagram, 1. Valve body one; 2. Valve body two; 3. Cold water inlet; 4. Water heater connection end; 5. Cold water return end; 6. Connection end one; 7. Hot water inlet; 8. Thermostatic valve core mounting end; 9. Mixing water outlet; 10. Connection end two; 11. U-shaped pin; 12. Cold water flow channel; 13. Thermostatic valve core assembly; 14. Check valve assembly; 15. Return pipe; 16. Connecting pipe; 17. Slot; 18. Sealing ring; 19. Nut; 20. Gas water heater. Detailed Implementation

[0015] like Figure 1 , Figure 2 , Figure 3As shown, this thermostatic mixing valve is applicable to zero-cold-water gas water heaters. The gas water heater 20 is equipped with a return water pump and a sensor for monitoring the internal water temperature. The thermostatic mixing valve includes a valve body 1 and a valve body 2 for adjustment. Valve body 1 has a cold water inlet 3, a water heater connection 4, a cold water return end 5, and a connection end 6. Valve body 2 has a hot water inlet 7, a thermostatic valve core mounting end 8, a mixing outlet 9, and a connection end 10. Connection end 6 extends into… The connection end 10 is positioned and connected by a U-shaped pin 11. Both valve body 1 and valve body 2 have interconnected cold water channels 12. The inlet and outlet of the gas water heater 20 are respectively connected to the water heater connection end 4 of valve body 1 and the hot water inlet end 7 of valve body 2. The thermostatic valve core mounting end 8 is equipped with a thermostatic valve core assembly 13. The mixing outlet end 9 is connected to the cold water return end 5 to form a return channel. The cold water return end 5 is equipped with a check valve assembly 14 to prevent cold water backflow.

[0016] Preferably, the mixing outlet 9 and the cold water return outlet 5 are connected through a return pipe 15.

[0017] After cold water flows into the cold inlet end 3, it splits into two paths. One path leads to the water heater connection end 4 and flows into the gas water heater 20. The gas water heater 20 heats the water to form hot water, which then flows into the hot inlet of the thermostatic valve core assembly 13. The other path enters the cold inlet of the thermostatic valve core through the cold water flow channel 12. The cold and hot water are mixed through the thermostatic valve core assembly 13 to form mixed water, which flows out from the mixed water outlet end 9 for use. After a long period of inactivity, the water temperature in the water storage chamber of the gas water heater 20 decreases. The sensor built into the gas water heater 20 (most gas water heaters on the market now have a sensor device to monitor the water temperature in their storage chamber) senses the change in water temperature in the storage chamber. The return water pump of the gas water heater 20 draws the cold water in the return flow channel back into the valve body 1 through the return pipe 15. At the same time, under the action of the check valve assembly 14, the cold water flows into the valve body 1 in one direction to prevent the return water and cold water from mixing.

[0018] To elaborate further, the outer end of the first connecting end 6 has a connecting pipe 16 that extends into the second connecting end 10. The peripheral wall of the second connecting end 10 has a groove 17 for the U-shaped pin 11 to be inserted into, which is used to limit the axial movement of the second connecting end 10. A sealing ring 18 is provided between the connecting pipe 16 and the second connecting end 10. The valve body 2 is limited to the valve body 11 by the U-shaped pin 11, thereby adjusting the installation distance between the two valve bodies to meet different installation conditions.

[0019] Preferably, nuts 19 are connected to the cold water inlet 3, the cold water return end 5, and the hot water inlet 7.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0021] Although this document frequently uses terms such as Valve Body 1, Valve Body 2, Cold Water Inlet, Water Heater Connection End, Cold Water Return End, Connection End 1, Hot Water Inlet, Thermostatic Valve Core Mounting End, Mixing Water Outlet, Connection End 2, U-shaped Pin, Cold Water Flow Channel, Thermostatic Valve Core Assembly, Check Valve Assembly, Return Pipe, Connecting Pipe, Slot, Sealing Ring, Nut, and Gas Water Heater, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A thermostatic mixing valve suitable for use in a zero-cold-water gas water heater, the gas water heater (20) being provided with a return water pump and a sensor for monitoring the temperature of the water inside, characterized in that, The thermostatic mixing valve includes a valve body one (1) and a valve body two (2) for adjustment and connection. The valve body one (1) has a cold water inlet (3), a water heater connection (4), a cold water return end (5), and a connection end one (6). The valve body two (2) has a hot water inlet (7), a thermostatic valve core mounting end (8), a mixing outlet end (9), and a connection end two (10). The connection end one (6) extends into the connection end two (10) and is positioned and connected by a U-shaped pin (11). Both valve body 1 (1) and valve body 2 (2) have interconnected cold water channels (12). The inlet and outlet of the gas water heater (20) are respectively connected to the water heater connection end (4) of valve body 1 (1) and the hot water inlet end (7) of valve body 2 (2). The thermostatic valve core mounting end (8) is equipped with a thermostatic valve core assembly (13). The mixing outlet end (9) is connected to the cold water return end (5) to form a return channel. The cold water return end (5) is equipped with a check valve assembly (14) to prevent cold water backflow.

2. A thermostatic mixing valve suitable for use in a zero-cold-water gas water heater according to claim 1, characterized in that, The mixing outlet (9) and the cold water return outlet (5) are connected through a return pipe (15).

3. A thermostatic mixing valve suitable for use in a zero-cold-water gas water heater according to claim 1, characterized in that, The outer end of the first connecting end (6) has a connecting pipe (16) that extends into the second connecting end (10). The second connecting end (10) has a groove (17) on its peripheral wall for a U-shaped pin (11) to be inserted. A sealing ring (18) is provided between the connecting pipe (16) and the second connecting end (10).

4. A thermostatic mixing valve suitable for use in a zero-cold-water gas water heater according to claim 1, characterized in that, Nuts (19) are connected to the cold water inlet (3), cold water return (5) and hot water inlet (7).

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