Circulation control valve of water heater
By using a memory alloy temperature control stop valve and a pressurized hole in the water heater circulation control valve, the problem of the water heater's cold water pipe always being at high temperature is solved, zero cold water circulation control that saves energy and gas is achieved, and the user experience is improved.
Patent Information
- Application Number
- CN202422888628.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The hot water in the circulating water circuit of the existing water heater always remains at a high temperature, resulting in high energy consumption and unnecessary long zero-cold water circulation time. There is a lack of effective control valves to maintain warm water in the cold water pipe.
A memory alloy temperature control stop valve is used to block hot water from entering the cold water pipeline when the water temperature in the hot water pipeline is too high, and the pressurization hole is used to prevent hot water from flowing back. The filter screen is combined to prevent impurities from entering, thereby achieving water temperature control in the cold water pipeline.
Effectively maintain the water temperature in the cold water pipeline, save zero cold water circulation time, reduce gas consumption, and improve users' water experience.
Smart Images
Figure CN223388048U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water heaters, in particular to a circulation control valve for a water heater. Background Art
[0002] In the current use of water heaters, a circulating water circuit is often set up in the entire home or use space, and there is always hot water in the circulating water circuit, so that the water heater achieves zero cold water use, and the overall energy consumption is very high. However, in actual use, it is not actually necessary to always have hot water in the cold water pipe connected to the water heater. The water outlet of the cold water pipe only needs warm water, and warm water can meet the zero cold water demand. However, there is no corresponding control valve to ensure that the cold water pipe of the water heater always keeps warm water instead of hot water. Utility Model Content
[0003] The utility model provides a circulation control valve for a water heater, which can solve the problem that the circulating water circuit of the existing water heater is always filled with high-temperature water, save the circulation time of zero-cold water, and save gas.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circulation control valve for a water heater, comprising a valve body, a communicating cavity provided in the middle of the valve body, one end of the communicating cavity being connected to a hot water inlet and a hot water outlet, the other end of the communicating cavity being connected to a cold water cavity, the two ends of the cold water cavity being respectively provided with a cold water inlet and a cold water outlet, a one-way valve facing the communicating cavity being installed in the cold water cavity, a valve port opening upward being provided in the middle of the communicating cavity, and a valve port opening facing upward being provided in the middle of the valve body. The valve port corresponds to a memory alloy temperature-controlled stop valve, and the memory alloy temperature-controlled stop valve seals and closes the valve port when the water temperature in the communicating cavity is higher than the set temperature T, wherein the set temperature T is 30°C-50°C. The hot water inlet is connected to the water heater body through a hot water pipeline, and the cold water inlet is connected to the water heater body through a cold water pipeline. By setting the memory alloy temperature-controlled stop valve, the hot water can be blocked from entering the cold water pipeline when the water temperature in the hot water pipeline is too high, so that the water in the cold water pipeline can always be kept warm below 30°C.
[0005] Preferably, a pressurizing hole is provided between the cold water chamber and the cold water outlet. The aperture of the pressurizing hole is smaller than the aperture of the cold water inlet and the cold water outlet. The function of the pressurizing hole is to increase the pressure in the cold water chamber when water is discharged from the cold water outlet, thereby increasing the reverse thrust pressure on the valve plate of the one-way valve and preventing the water in the connecting chamber from flushing open the one-way valve and entering the cold water chamber.
[0006] Preferably, the cold water inlet and the hot water inlet are both equipped with filter screens to prevent impurities from entering the valve body.
[0007] Compared with the prior art, the beneficial effects of the present invention are:
[0008] The structure is simple. By setting a memory alloy temperature control stop valve in the control valve, the hot water can be blocked from entering the cold water pipe when the water temperature in the hot water pipe is too high, so that the water in the cold water pipe can always maintain a normal temperature, improving the user's water experience of the zero cold water water heater, saving the zero cold water circulation time, and saving gas; at the same time, by setting a boost hole, hot water can be prevented from entering the cold water cavity when the cold water outlet is discharging water, solving the problem of high-temperature water in the circulating water circuit of the existing water heater. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a main cross-sectional structural diagram of the present utility model;
[0010] Figure 2 This is a system configuration diagram of the present utility model. DETAILED DESCRIPTION
[0011] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0012] like Figure 1-2 As shown, the utility model provides a circulation control valve for a water heater, comprising a valve body 1, a connecting chamber 5 is provided in the middle of the valve body 1, one end of the connecting chamber 5 is connected to a hot water inlet 2 and a hot water outlet 4, the other end of the connecting chamber 5 is connected to a cold water chamber 11, and both ends of the cold water chamber 11 are respectively provided with a cold water inlet 10 and a cold water outlet 13, a one-way valve 3 facing the connecting chamber 5 is installed in the cold water chamber 11, a valve port 8 with an upward opening is provided in the middle of the connecting chamber 5, and a memory alloy temperature control stop valve 6 corresponding to the valve port 8 is provided in the middle of the valve body 1. The memory alloy temperature control stop valve 6 blocks and closes the valve port 8 when the water temperature in the communicating chamber 5 is higher than the set temperature T, wherein the set temperature T is 30°C-50°C. The hot water inlet 2 is connected to the water heater body 18 through the hot water pipe 14, and the cold water inlet 10 is connected to the water heater body 18 through the cold water pipe 19. By setting the memory alloy temperature control stop valve 6, the hot water can be intercepted from entering the cold water pipe 19 when the water temperature in the hot water pipe 14 is too high, so that the water in the cold water pipe 19 can always be kept warm below 35 degrees, saving the circulation time of zero cold water and saving gas.
[0013] Specifically, when the water temperature in the hot water pipe 14 does not exceed the set temperature T, the memory alloy temperature control stop valve 6 is in a contracted state and will not close the valve port 8. The warm water will push open the one-way valve 3 and enter the cold water inlet 10, then enter the cold water pipe 19, and then return to the water heater body 18 or from the cold water pipe 16. The water out of the cold water pipe 16 is all warm water.
[0014] The principle of the memory alloy temperature-controlled stop valve 6 is to use a temperature-sensitive memory alloy as a spring. When the memory alloy spring senses that the hot water has exceeded the set temperature T, preferably 35°C, the spring's stress changes, causing the valve stem 7 on the memory alloy temperature-controlled stop valve 6 to be pushed downward by the spring, blocking the valve port 8. When the water temperature in the hot water line 14 exceeds 35°C, the valve stem 7 moves downward, blocking the valve port 8. Hot water cannot enter the position of the one-way valve 3 and can only be discharged from the hot water outlet 4 and the hot water pipe 15 on the hot water line 14, for normal hot water use, such as bathing.
[0015] In this embodiment, a pressurizing hole 12 is provided between the cold water chamber 11 and the cold water outlet 13. The diameter of the pressurizing hole 12 is smaller than the diameters of the cold water inlet 10 and the cold water outlet 13. Specifically, when water is discharged from the cold water outlet 13, the pressure in the cold water chamber 11 will drop and will be lower than the water pressure at the hot water inlet 2. Therefore, the water pressure in the connecting chamber 5 may break open the one-way valve 3, resulting in the water flowing out of the cold water outlet 13 not being cold water. The function of the pressurizing hole 12 is to increase the pressure in the cold water chamber 11 when water is discharged from the cold water outlet 13, thereby increasing the reverse thrust pressure on the valve disc of the one-way valve 3 and preventing the water in the connecting chamber 5 from breaking open the one-way valve 3 and entering the cold water chamber 11.
[0016] The cold water pipe 19 can be connected to the tap water pipe 17 , and the water from the tap water pipe 17 can directly enter the water heater body 18 or be discharged from the cold water outlet 13 along the cold water pipe 19 .
[0017] In this embodiment, filter screens 9 are installed in both the cold water inlet 10 and the hot water inlet 2 to prevent impurities from entering the valve body 1 .
[0018] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0019] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0020] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0021] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.
Claims
1. A circulation control valve for a water heater, characterized in that: include: A valve body (1), wherein a connecting cavity (5) is provided in the middle of the valve body (1), one end of the connecting cavity (5) is connected to a hot water inlet (2) and a hot water outlet (4), and the other end of the connecting cavity (5) is connected to a cold water cavity (11), and the two ends of the cold water cavity (11) are respectively provided with a cold water inlet (10) and a cold water outlet (13), a one-way valve (3) facing the connecting cavity (5) is installed in the cold water cavity (11), and a valve with an upward opening is provided in the middle of the connecting cavity (5). The valve body (1) is provided with a memory alloy temperature control stop valve (6) corresponding to the valve port (8) in the middle thereof. The memory alloy temperature control stop valve (6) blocks and closes the valve port (8) when the water temperature in the communicating cavity (5) is higher than a set temperature T, wherein the set temperature T is 30°C-50°C. The hot water inlet (2) is connected to the water heater body (18) through a hot water pipeline (14), and the cold water inlet (10) is connected to the water heater body (18) through a cold water pipeline (19).
2. The circulation control valve for a water heater according to claim 1, characterized in that: A pressurizing hole (12) is provided between the cold water chamber (11) and the cold water outlet (13), and the diameter of the pressurizing hole (12) is smaller than the diameters of the cold water inlet (10) and the cold water outlet (13).
3. The circulation control valve for a water heater according to claim 2, characterized in that: Filters (9) are installed in both the cold water inlet (10) and the hot water inlet (2).