Temperature-sensitive cut-off valve

Abstract

The utility model provides a kind of temperature sensing stop valve, belong to valve technical field.It solves the existing completion hot water use, the temperature of water in hot water pipe reduces until becomes cold water, therefore when next time water is used, cold water heat cannot be directly mixed to obtain the required hot water, influence use experience problem.This temperature sensing stop valve, including the water inlet valve channel with water inlet end and the water outlet valve channel with water outlet end, connecting valve channel is equipped between water inlet valve channel and water outlet valve channel, water inlet valve channel and connecting valve channel include temperature bag element, spring one, plunger, push rod, stud and spring two in, push rod one end is connected plunger and temperature bag element in proper order, its other end is matched with stud, spring one is set in temperature bag element outside, spring two is located in connecting valve channel and is supported on stud, the stepped portion with protrusion is formed on the inner wall of water inlet valve channel, stepped portion has the sealing end face that forms hard seal with plunger.This utility model has the advantages of improving user water experience, temperature adjusting water flow is out.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology and relates to a temperature-sensing shut-off valve. Background Technology

[0002] People often need to use hot water for washing, showering, etc. in winter. However, we have found that faucets usually need to release most of the cold water in the hot water pipe before releasing warm water. This is because after using warm water, the water temperature in the hot water pipe drops until it becomes cold water. Therefore, when using water again, the cold and hot water cannot be directly mixed to obtain the required hot water, which affects the user experience. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a temperature-sensing shut-off valve suitable for zero-cold-water gas water heaters.

[0004] The objective of this utility model can be achieved through the following technical solution: A temperature-sensing shut-off valve, characterized in that it includes an inlet valve channel with an inlet end and an outlet valve channel with an outlet end, and a connecting valve channel is provided between the inlet valve channel and the outlet valve channel. The inlet valve channel and the connecting valve channel include a temperature sensor element, a first spring, a plunger, a push rod, a stud, and a second spring. One end of the push rod is connected to the plunger and the temperature sensor element in sequence, and the other end is connected to the stud. The second spring is set outside the temperature sensor element. The second spring is located inside the connecting valve channel and supported on the stud. The inner wall of the inlet valve channel has a raised step portion. The step portion has a sealing end face that forms a hard seal with the plunger. There is a water passage gap between the plunger and the step portion for water to flow through.

[0005] In the aforementioned temperature-sensing shut-off valve, the connecting valve passage has an inner spacer for the fitting of a stud and a spring.

[0006] In the aforementioned temperature-sensing shut-off valve, the connecting valve passage has multiple water passage holes.

[0007] In one of the aforementioned temperature-sensing shut-off valves, a check valve is installed inside the outlet valve channel.

[0008] In the aforementioned temperature-sensing shut-off valve, sealing rings are provided between the inlet valve channel and the connecting valve channel, as well as between the connecting valve channel and the outlet valve channel.

[0009] Compared with existing technologies, this temperature-sensing shut-off valve has the advantages of improving the user's water experience, providing immediate flow of temperature-controlled water, and preventing cross-contamination between the return pipe and the cold water inlet. Attached Figure Description

[0010] Figure 1 This is a 3D view of the temperature-sensing shut-off valve.

[0011] Figure 2 This is a 3D view of the temperature-sensing shut-off valve without the outlet valve channel.

[0012] Figure 3 This is a cross-sectional view of the plunger of this temperature-sensing shut-off valve after it has been sealed.

[0013] In the diagram, 1. Water inlet; 2. Water inlet valve channel; 3. Water outlet; 4. Water outlet valve channel; 5. Connecting valve channel; 6. Temperature sensor element; 7. Spring 1; 8. Plunger; 9. Push rod; 10. Stud; 11. Spring 2; 12. Stepped section; 13. Sealing end face; 14. Water passage gap; 15. Inner diaphragm; 16. Water passage hole; 17. Check valve; 18. Sealing ring. Detailed Implementation

[0014] 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.

[0015] like Figure 1 , Figure 2 , Figure 3 As shown, this temperature-sensing shut-off valve is characterized by comprising an inlet valve channel 2 with an inlet end 1 and an outlet valve channel 4 with an outlet end 3. A connecting valve channel 5 is provided between the inlet valve channel 2 and the outlet valve channel 4. The inlet valve channel 2 and the connecting valve channel 5 include a temperature sensor element 6, a first spring 7, a plunger 8, a push rod 9, a stud 10, and a second spring 11. One end of the push rod 9 is connected to the plunger 8 and the temperature sensor element 6 in sequence, and the other end is mated with the stud 10. The first spring 7 is sleeved on the outside of the temperature sensor element 6. The second spring 11 is located inside the connecting valve channel 5 and supported on the stud 10. The inner wall of the inlet valve channel 2 has a raised step portion 12. The valve 12 has a sealing end face 13 that forms a hard seal with the plunger 8. When cold water is introduced, there is a water passage gap 14 between the plunger 8 and the step portion 12 for the cold water at that temperature to flow through. When the water temperature in the hot water pipe is kept in hot water, the temperature sensor 6 senses the expansion of the hot water temperature, forcing the push rod 9 and the stud 10 to press in the direction of the second spring 11. However, the second spring 11 has a high support capacity, and its support force is greater than the pressure of the push rod 9. Therefore, the push rod 9 forms a reaction thrust, thereby pushing the plunger 8. The plunger 8 and the sealing end face 13 of the step portion 12 fit together to form a hard seal, and hot water will not flow into the shut-off valve.

[0016] In addition, during operation, cold water passes through the shut-off valve and flows back to the heating system to be reheated into hot water. Cold water flows into the shut-off valve in one direction only, and hot water will not enter the shut-off valve, preventing the mixing of cold and hot water.

[0017] Preferably, the connecting valve passage 5 has an inner spacer 15 for the stud 10 and spring 11 to be fitted together.

[0018] Preferably, the connecting valve channel 5 has multiple water passage holes 16.

[0019] In addition, a check valve 17 is installed in the outlet valve channel 4; the check valve 17 is an existing structural technology, so it is not described in detail, and the existing structure of the check valve 17 is not shown in the accompanying drawings of the instruction manual.

[0020] Preferably, a sealing ring 18 is provided between the inlet valve channel 2 and the connecting valve channel 5, and between the connecting valve channel 5 and the outlet valve channel 4.

[0021] 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.

[0022] Although this document frequently uses terms such as inlet end 1, inlet valve channel 2, outlet end 3, outlet valve channel 4, connecting valve channel 5, temperature sensor element 6, spring one 7, plunger 8, push rod 9, stud 10, spring two 11, step portion 12, sealing end face 13, water passage gap 14, inner spacer 15, water passage hole 16, check valve 17, and sealing ring 18, 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 temperature-sensing shut-off valve, characterized in that, It includes an inlet valve channel (2) with an inlet end (1) and an outlet valve channel (4) with an outlet end (3). A connecting valve channel (5) is provided between the inlet valve channel (2) and the outlet valve channel (4). The inlet valve channel (2) and the connecting valve channel (5) include a temperature sensor element (6), a first spring (7), a plunger (8), a push rod (9), a stud (10), and a second spring (11). One end of the push rod (9) is connected to the plunger (8) and the temperature sensor element (6) in sequence, and the other end... The end is connected to the stud (10), the first spring (7) is sleeved outside the temperature element (6), the second spring (11) is located inside the connecting valve channel (5) and supported on the stud (10), the inner wall of the water inlet valve channel (2) has a raised step (12), the step (12) has a sealing end face (13) that forms a hard seal with the plunger (8), and there is a water passage gap (14) between the plunger (8) and the step (12) for water to flow through.

2. The temperature-sensing shut-off valve according to claim 1, characterized in that, The connecting valve passage (5) has an inner spacer (15) for the stud (10) and spring (11) to be installed together.

3. The temperature-sensing shut-off valve according to claim 1, characterized in that, The connecting valve channel (5) has multiple water passage holes (16).

4. A temperature-sensing shut-off valve according to claim 1, characterized in that, A check valve (17) is installed inside the water outlet valve channel (4).

5. A temperature-sensing shut-off valve according to claim 1, characterized in that, A sealing ring (18) is provided between the inlet valve channel (2) and the connecting valve channel (5) and between the connecting valve channel (5) and the outlet valve channel (4).

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