Bypass structure and water outlet valve

Abstract

The utility model belongs to the technical field of gas wall-hanging stoves, and discloses a bypass structure and a water outlet valve. The bypass structure comprises a valve body, an adjusting piece, a valve element and a valve deck. A bypass cavity is formed in the valve body in the axial direction, a liquid inlet flow channel and a liquid outlet flow channel which communicate with the bypass cavity are formed in the valve body, and a first installation opening and a second installation opening are further formed in the valve body. The adjusting part comprises an adjusting rod and an adjusting head, the adjusting rod is movably arranged at the first mounting opening in the axial direction of the bypass cavity, the peripheral wall of the adjusting head and the inner wall of the bypass cavity are in sliding sealing, the adjusting head is arranged between the liquid inlet flow channel and the liquid outlet flow channel, and a liquid passing opening capable of communicating the liquid inlet flow channel with the liquid outlet flow channel is formed in the adjusting head; the valve cover is installed at the second installation opening, the valve element is arranged between the adjusting piece and the valve cover and used for opening and closing the liquid passing opening, the valve element comprises a plugging assembly and an elastic piece, and the plugging assembly can abut against the liquid passing opening under the elastic effect of the elastic piece; when the adjusting piece is adjusted in the axial direction of the adjusting rod, the pre-tightening force of the elastic piece can be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of gas wall-hung boiler technology, and in particular to a bypass structure and a water outlet valve. Background Technology

[0002] Gas-fired wall-hung boilers are used in wall-hung heating systems. They typically have an internal bypass structure to prevent water flow slowing down due to high water resistance in the underfloor heating pipes, thus avoiding excessively rapid water temperature rise at the main heat exchanger and overheating. However, most wall-hung boilers use a constant-pressure bypass structure and lack pressure regulation functionality. Some bypass valves with pressure regulation mechanisms are installed inside the casing, requiring the casing to be opened before operation, which is extremely inconvenient and results in a poor user experience.

[0003] Therefore, there is an urgent need for a bypass structure and a water outlet valve to solve the above-mentioned technical problems. Utility Model Content

[0004] One objective of this invention is to provide a bypass structure that simplifies the overall structure and improves the convenience of adjusting the valve core opening pressure.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A bypass structure, comprising:

[0007] The valve body has a bypass cavity arranged axially inside it. The valve body is provided with an inlet flow channel and an outlet flow channel communicating with the bypass cavity. The valve body is also provided with a first mounting port and a second mounting port.

[0008] An adjusting component includes an adjusting rod and an adjusting head. The adjusting rod is axially movably disposed at the first mounting port along the bypass cavity. The outer peripheral wall of the adjusting head is slidably sealed to the inner wall of the bypass cavity. The adjusting head is disposed between the inlet flow channel and the outlet flow channel, and the adjusting head is provided with a liquid passage that can connect the inlet flow channel and the outlet flow channel.

[0009] The valve core and valve cover are provided. The valve cover is installed at the second mounting port. The valve core is disposed between the adjusting member and the valve cover and is used to open and close the liquid passage. The valve core includes a sealing component and an elastic member. The sealing component can press against the liquid passage under the elastic action of the elastic member. When the adjusting member is adjusted along the axial direction of the adjusting rod, the preload of the elastic member can be adjusted.

[0010] Preferably, the adjusting head is disposed around the outer periphery of the adjusting rod near the valve core end, and is connected to the adjusting rod through multiple ribs, and the gap between the adjusting rod and the adjusting head forms the liquid passage.

[0011] Preferably, the adjusting element is threadedly installed in the first mounting port.

[0012] Preferably, a first sealing element is provided between the outer periphery of the adjusting rod and the first mounting port; and / or

[0013] A second sealing element is provided between the outer periphery of the adjusting head and the inner wall of the valve body; and / or

[0014] A third sealing element is provided between the outer periphery of the valve cover and the second mounting port.

[0015] Preferably, the adjusting member has a guide hole at one end near the valve core, and the sealing assembly includes a sealing member and a first movable rod connected to each other. The sealing member can be tightly sealed against the liquid outlet, and the first movable rod is movably inserted into the guide hole.

[0016] Preferably, the valve body includes:

[0017] The valve cover is provided with a limiting hole at one end near the valve core. The sealing assembly includes a sealing member and a second movable rod connected to each other. The sealing member can be tightly sealed against the liquid outlet. The second movable rod is movably inserted into the limiting hole. The second movable rod is axially aligned with the first movable rod.

[0018] Preferably, the second movable rod is axially concentric with the first movable rod.

[0019] Preferably, the valve cover is rotatably snapped into the second mounting port.

[0020] Preferably, a first connecting joint is formed at the inlet of the liquid inlet channel. The first connecting joint is used to connect to an external channel, and the axial direction of the first connecting joint is set at an angle to the axial direction of the valve body; and / or

[0021] A second connecting joint is formed at the outlet of the liquid outlet channel. The second connecting joint is used to connect to an external channel. The axial direction of the second connecting joint is set at an angle to the axial direction of the valve body.

[0022] Another objective of this invention is to provide a water outlet valve that can improve water outlet efficiency, thereby enhancing the user experience.

[0023] To achieve this objective, the present invention adopts the following technical solution:

[0024] Water outlet valve, including:

[0025] The valve body has a three-way valve chamber, a heating channel and a heat exchange water inlet channel, and the three-way valve chamber can be selectively connected to the heating channel or the heat exchange water inlet channel;

[0026] The bypass structure is connected to the valve body. The liquid inlet channel of the bypass structure is connected to the heating channel, and the liquid outlet channel of the bypass structure is connected to the side of the three-way valve chamber near the heat exchange water inlet channel.

[0027] The beneficial effects of this utility model are:

[0028] This utility model discloses a bypass structure. The bypass structure includes a valve body, an adjusting component, a valve core, and a valve cover. A bypass cavity is axially arranged inside the valve body. The valve body has an inlet channel and an outlet channel communicating with the bypass cavity. The valve body also has a first mounting port and a second mounting port. The adjusting component includes an adjusting rod and an adjusting head. The adjusting rod is movably disposed in the first mounting port along the axial direction of the bypass cavity. The outer peripheral wall of the adjusting head slides and seals against the inner wall of the bypass cavity. The adjusting head is positioned between the inlet channel and the outlet channel and has a through-hole connecting the inlet and outlet channels. The valve cover is installed in the second mounting port. The valve core is positioned between the adjusting component and the valve cover for opening and closing the through-hole. The valve core includes a sealing component and an elastic element. The sealing component can press against the through-hole under the elastic action of the elastic element. When the adjusting component is adjusted axially along the adjusting rod, the preload of the elastic element can be adjusted.

[0029] This bypass structure is not only simple in overall design, but also facilitates the installation of the adjusting component and valve core from the second mounting port, and finally the valve cover is used for sealing and fixing, reducing assembly difficulty. At the same time, when it is necessary to change the preload of the elastic component, it is not necessary to disassemble the entire structure from the external chassis. The adjusting component can be directly adjusted along the axis of the adjusting rod at the first mounting port, which greatly improves the convenience of adjusting the preload of the elastic component, and thus indirectly improves the convenience of adjusting the valve core opening pressure.

[0030] This utility model also discloses a water outlet valve, which can improve the user experience by applying the above-mentioned bypass structure. Attached Figure Description

[0031] Figure 1 This is an axonometric view of the bypass structure provided by this utility model;

[0032] Figure 2 This is a cross-sectional view of the bypass structure provided by this utility model;

[0033] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0034] Figure 4 This is a schematic diagram of the structure of the adjusting component provided by this utility model;

[0035] Figure 5This is an isometric view of the water outlet valve provided by this utility model;

[0036] Figure 6 This is a rear view of the water outlet valve provided by this utility model.

[0037] In the picture:

[0038] 10. Valve body; 11. First mounting port; 12. Second mounting port; 101. Liquid inlet channel; 102. Liquid outlet channel; 13. Liquid outlet space; 14. Liquid outlet;

[0039] 20. Adjusting component; 21. Adjusting rod; 211. Guide hole; 22. Adjusting head; 23. Liquid outlet; 24. Rib;

[0040] 30. Valve core; 31. Sealing assembly; 311. Sealing component; 312. First movable rod; 313. Second movable rod; 32. Elastic element;

[0041] 40. Valve cover; 41. Limiting hole; 42. Main body; 43. Sleeve part;

[0042] 50. First sealing element;

[0043] 60. Second sealing element;

[0044] 70. Third sealing element;

[0045] 100. Valve body; 110. Heating channel; 120. Heat exchange inlet channel; 130. Hot water inlet; 140. Heat exchange outlet channel; 150. Bathroom channel. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] Gas-fired wall-hung boilers are used in wall-hung heating systems. They typically have an internal bypass structure to prevent water flow slowing down due to high water resistance in the underfloor heating pipes, thus avoiding excessively rapid water temperature rise at the main heat exchanger and overheating. However, most wall-hung boilers use a constant-pressure bypass structure and lack pressure regulation functionality. Some bypass valves with pressure regulation mechanisms are installed inside the casing, requiring the casing to be opened before operation, which is extremely inconvenient and results in a poor user experience.

[0051] To address the aforementioned technical problems, this embodiment provides a bypass structure. Specifically, as follows... Figures 1-3As shown, the bypass structure includes a valve body 10, an adjusting component 20, and a valve core 30. The valve body 10 has an axially arranged bypass cavity inside it. The valve body 10 has an inlet channel 101 and an outlet channel 102 communicating with the bypass cavity. The valve body 10 also has a first mounting port 11 and a second mounting port 12. The adjusting component 20 includes an adjusting rod 21 and an adjusting head 22. The adjusting rod 21 is movably disposed along the axial direction of the bypass cavity at the first mounting port 11. The outer peripheral wall of the adjusting head 22 slides and seals against the inner wall of the bypass cavity. The adjusting head 22 is disposed at... Between the inlet channel 101 and the outlet channel 102, and on the adjusting head 22, there is a liquid passage 23 that can connect the inlet channel 101 and the outlet channel 102; the valve cover 40 is installed in the second mounting port 12, and the valve core 30 is disposed between the adjusting member 20 and the valve cover 40 for opening and closing the liquid passage 23. The valve core 30 includes a sealing component 31 and an elastic member 32. The sealing component 31 can press against the liquid passage 23 under the elastic action of the elastic member 32; when the adjusting member 20 is adjusted along the axial direction of the adjusting rod 21, the preload of the elastic member 32 can be adjusted.

[0052] This bypass structure is not only simple in overall design, but also facilitates the installation of the adjusting element 20 and valve core 30 through the second mounting port 12, and finally seals and fixes them through the valve cover 40, reducing assembly difficulty. At the same time, when it is necessary to change the preload of the elastic element 32, it is not necessary to disassemble the entire structure from the external chassis. The adjusting element 20 can be directly adjusted along the axis of the adjusting rod 21 at the first mounting port 11, which greatly improves the convenience of adjusting the preload of the elastic element 32, thereby indirectly improving the convenience of adjusting the opening pressure of the valve core 30 and enhancing the user experience.

[0053] It should be noted that, as Figure 2 As shown, liquid enters through the inlet channel 101 and flows through the bypass cavity to the outlet 23. As the pressure increases, the liquid pushes the sealing component 31 to compress the elastic element 32. At this time, the sealing component 31 no longer presses against the outlet 23, allowing the liquid to enter the outlet channel 102 and flow out. When the adjusting component 20 moves axially closer to the valve core 30, the adjusting component 20 can compress the elastic element 32, thereby increasing the preload of the elastic element 32 and thus increasing the opening pressure of the outlet 23; conversely, it reduces the opening pressure of the outlet 23. Furthermore, the elastic element 32 is a spring. Springs are not only simple in structure but also inexpensive, easy to install and use, and can effectively reduce manufacturing difficulty and cost.

[0054] To further simplify the structure, such as Figures 2-4As shown, the adjusting head 22 is arranged around the outer periphery of the adjusting rod 21 near the valve core 30, and is connected to the adjusting rod 21 by multiple ribs 24. The gap between the adjusting rod 21 and the adjusting head 22 forms a liquid passage 23. This arrangement allows a liquid passage 23 to be formed between the inner diameter of the adjusting head 22 and the outer diameter of the adjusting rod 21. When the sealing assembly 31 abuts against the end of the adjusting rod 21, the liquid passage 23 can be sealed. This design is not only simple in structure but also ensures smooth operation. Furthermore, the connection between the adjusting head 22 and the adjusting rod 21 by multiple ribs 24, evenly distributed along the circumference of the adjusting rod 21, ensures the stability of the connection between the adjusting head 22 and the adjusting rod 21 and extends their service life.

[0055] It should be noted that in this embodiment, the adjusting rod 21 and the adjusting head 22 are detachably connected, which facilitates maintenance and replacement. In other embodiments, the adjusting rod 21 and the adjusting head 22 are an integral structure. This structure can effectively reduce the processing difficulty and improve the stability of the adjusting head 22.

[0056] Furthermore, the adjusting member 20 is threadedly installed in the first mounting port 11. This method not only improves the ease of assembly, but also allows the adjusting member 20 to move in the direction of compressing or stretching the elastic member 32 simply by rotating the end of the adjusting member 20 clockwise or counterclockwise when the opening pressure of the valve core 30 needs to be adjusted, greatly improving the convenience of the adjustment process.

[0057] To prevent liquid leakage, such as Figure 2 and Figure 3 As shown, a first seal 50 is provided between the outer periphery of the adjusting rod 21 and the first mounting port 11; and / or a second seal 60 is provided between the outer periphery of the adjusting head 22 and the inner wall of the valve body 10; and / or a third seal 70 is provided between the outer periphery of the valve cover 40 and the second mounting port 12. The first seal 50 prevents liquid from leaking through the gap between the adjusting rod 21 and the first mounting port 11 into the bypass structure. The second seal 60 prevents liquid from leaking through the gap between the adjusting head 22 and the valve body 10 into the liquid outlet channel 102, ensuring good airtightness of the bypass structure and improving water output efficiency. The third seal 70 effectively prevents liquid from leaking from the gap between the valve cover 40 and the second mounting port 12, thus ensuring good airtightness of the bypass structure. Furthermore, in this embodiment, the first seal 50, the second seal 60, and the third seal 70 are all present simultaneously.

[0058] It should be noted that the first sealing element 50, the second sealing element 60, and the third sealing element 70 are all O-rings, and the outer periphery of the adjusting rod 21, the adjusting head 22, and the valve cover 40 are all provided with limiting grooves, allowing the O-rings to be placed within the limiting grooves. The sealing principle of O-rings is simple, which helps reduce manufacturing costs; and by placing the O-rings within the limiting grooves, the O-rings will not wobble when assembling and rotating the adjusting element 20, effectively improving the ease of operation.

[0059] Furthermore, in this embodiment, the valve cover 40 is rotatably snapped into the second mounting port 12. This is simple and convenient to operate, improving assembly and disassembly efficiency and ensuring high precision. In other embodiments, the valve cover 40 can be threaded into the second mounting port 12; or it can be interference-fitted into the second mounting port 12. Threaded fitting offers good stability and is easy to process; interference fitting offers fast assembly speed and high efficiency. The appropriate processing method can be selected according to actual needs; this embodiment does not impose specific limitations. In other embodiments, the valve cover 40 can also be fixed to the valve body 10 using a pin or ring, as long as a detachable connection is maintained.

[0060] In addition, such as Figure 2 and Figure 3 As shown, the adjusting member 20 has a guide hole 211 at one end near the valve core 30. The sealing assembly 31 includes a sealing member 311 and a first movable rod 312 connected to each other. The sealing member 311 can be tightly sealed against the liquid outlet 23, and the first movable rod 312 is movably inserted into the guide hole 211. When the sealing member 311 approaches or moves away from the liquid outlet 23, the first movable rod 312 can move axially within the guide hole 211, thereby ensuring that the sealing member 311 can always move along the preset direction, thus ensuring good stability and good valve opening and closing effect.

[0061] like Figure 2 and Figure 3 As shown, a limiting hole 41 is provided at one end of the valve cover 40 near the valve core 30. The sealing assembly 31 includes a sealing element 311 and a second movable rod 313 connected to each other. The sealing element 311 can be tightly sealed against the liquid outlet 23. The second movable rod 313 is movably inserted into the limiting hole 41, and the second movable rod 313 is axially aligned with the first movable rod 312. When the sealing element 311 approaches or moves away from the liquid outlet 23, the second movable rod 313 can move axially within the limiting hole 41, thereby ensuring that the sealing element 311 can always move along the preset direction. The guide hole 211 and the limiting hole 41 work together to limit the first movable rod 312 and the second movable rod 313 respectively, thereby ensuring good stability and good valve opening and closing effect. At the same time, the second movable rod 313 is axially aligned with the first movable rod 312, which can also reduce the installation difficulty and improve the smoothness of the valve core 30 movement.

[0062] In addition, such as Figure 2 As shown, the second movable rod 313 is axially concentric with the first movable rod 312. This arrangement further reduces the installation difficulty of the valve core 30 and the valve cover 40. During installation, after inserting the first movable rod 312 into the guide hole 211, the valve cover 40 can be directly installed into the second mounting port 12, ensuring that the second movable rod 313 is inserted into the limiting hole 41, thereby further improving the ease of installation.

[0063] In addition, the valve body 10 is provided with a liquid outlet 14, and the valve cover 40 extends into the valve body 10 to form a liquid outlet space 13 with the valve body 10. The liquid outlet space 13 is connected to the liquid outlet 14 to form a liquid outlet flow channel 102. That is, after the liquid flows through the liquid outlet 23, it can enter the liquid outlet space 13 and then flow out through the liquid outlet 14. Furthermore, the third seal 70 can effectively prevent liquid leakage in the liquid outlet space 13.

[0064] In addition, such as Figure 2 and Figure 3 As shown, the valve cover 40, extending into the liquid outlet space 13, has a main body 42 and a sleeve 43 connected to each other. The diameter of the sleeve 43 is smaller than the diameter of the main body 42. The elastic member 32 can be fitted onto the outer periphery of the sleeve 43, and the end of the elastic member 32 away from the sealing assembly 31 is connected to the main body 42. In this configuration, the elastic member 32 is fitted onto the outer periphery of the sleeve 43, so the sleeve 43 can limit the elastic member 32 radially, preventing the elastic member 32 from swaying left and right during compression; while the main body 42 can limit the elastic member 32 axially, ensuring that the elastic member 32 can be compressed smoothly.

[0065] To facilitate connection of this bypass structure to other devices, such as Figure 1 and Figure 2 As shown, a first connecting joint is formed at the inlet of the liquid inlet channel 101, which is used to connect to an external channel. The axis of the first connecting joint is set at an angle to the axis of the valve body 10. And / or a second connecting joint is formed at the outlet of the liquid outlet channel 102, which is used to connect to an external channel. The axis of the second connecting joint is also set at an angle to the axis of the valve body 10. This configuration significantly improves the ease of connecting the bypass structure. Furthermore, because both are set at an angle to the axis of the valve body 10, whether individually or separately, installation efficiency and speed are maintained even when the internal structure of the product is complex.

[0066] In this embodiment, the first connector and the second connector are arranged parallel to each other and both are perpendicular to the axis of the valve body 10, thereby improving the convenience of installing this bypass structure inside the product. In other embodiments, the included angle can be selectively machined according to actual needs.

[0067] In addition to the above, this embodiment also provides a water outlet valve, such as... Figure 5 and Figure 6 As shown, the outlet valve is applied in a water system. The outlet valve includes a valve body 100 and the aforementioned bypass structure. The valve body 100 has a three-way valve chamber, a heating channel 110, and a heat exchange inlet channel 120. The three-way valve chamber can be selectively connected to either the heating channel 110 or the heat exchange inlet channel 120. The bypass structure is connected to the valve body 100. The liquid inlet channel 101 of the bypass structure is connected to the heating channel 110, and the liquid outlet channel 102 of the bypass structure is connected to the side of the three-way valve chamber near the heat exchange inlet channel 120.

[0068] Specifically, the water system includes a combustion chamber (not shown in the figure), a heating system (not shown in the figure), a heat exchange structure (not shown in the figure), and... Figure 5 and Figure 6 The outlet valve shown connects the combustion chamber to the hot water inlet 130 and the heating channel 110 to the heating system. The heat exchange inlet channel 120 of the outlet valve connects to the inlet of the heat exchange structure, and the outlet of the heat exchange structure connects to the heat exchange outlet channel 140, allowing domestic water to be discharged through the bathroom channel 150 of the outlet valve. When the heat exchange structure experiences dry burning due to lack of water, water in the heating channel 110 can sequentially flow through the inlet channel 101, valve core 30, and outlet channel 102 in the bypass structure, and then into the heat exchange inlet channel 120. This effectively prevents damage to the heat exchange structure due to dry burning, improves equipment lifespan, and ensures heat exchange efficiency.

[0069] When it is necessary to adjust the opening pressure of the valve core 30, simply rotate the adjusting component 20 clockwise or counterclockwise according to the actual usage situation. This will allow the adjusting component 20 to move axially, thereby compressing or stretching the elastic component 32. This changes the pressure value at which the liquid pushes the sealing component 311 to open the liquid port 23, achieving the purpose of directly and quickly adjusting the opening pressure of the valve core 30. The operation is simple, convenient, and quick, improving the user experience.

[0070] In summary, this bypass structure is not only simple in structure but also easy to install. Users can directly rotate the adjusting component 20 to quickly adjust the opening pressure of the valve core 30. By applying this bypass structure, this outlet valve can improve the user experience.

[0071] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A bypass structure, characterized in that, include: The valve body (10) has a bypass cavity arranged axially inside it. The valve body (10) is provided with an inlet flow channel (101) and an outlet flow channel (102) communicating with the bypass cavity. The valve body (10) is also provided with a first mounting port (11) and a second mounting port (12). The adjusting component (20) includes an adjusting rod (21) and an adjusting head (22). The adjusting rod (21) is movably disposed in the first mounting port (11) along the axial direction of the bypass cavity. The outer peripheral wall of the adjusting head (22) is slidably sealed to the inner wall of the bypass cavity. The adjusting head (22) is disposed between the liquid inlet channel (101) and the liquid outlet channel (102). The adjusting head (22) is provided with a liquid passage (23) that can connect the liquid inlet channel (101) and the liquid outlet channel (102). The valve core (30) and valve cover (40) are installed in the second mounting port (12). The valve core (30) is disposed between the adjusting member (20) and the valve cover (40) for opening and closing the liquid passage (23). The valve core (30) includes a sealing component (31) and an elastic member (32). The sealing component (31) can press against the liquid passage (23) under the elastic action of the elastic member (32). When the adjusting member (20) is adjusted along the axial direction of the adjusting rod (21), the preload of the elastic member (32) can be adjusted.

2. The bypass structure according to claim 1, characterized in that, The adjusting head (22) is arranged around the outer periphery of the adjusting rod (21) near the valve core (30) and is connected to the adjusting rod (21) through a plurality of ribs (24). The gap between the adjusting rod (21) and the adjusting head (22) forms the liquid passage (23).

3. The bypass structure according to claim 1, characterized in that, The adjusting element (20) is threadedly installed in the first mounting port (11).

4. The bypass structure according to claim 1, characterized in that, A first sealing element (50) is provided between the outer periphery of the adjusting rod (21) and the first mounting port (11); and / or A second sealing element (60) is provided between the outer periphery of the adjusting head (22) and the inner wall of the valve body (10); and / or A third seal (70) is provided between the outer periphery of the valve cover (40) and the second mounting port (12).

5. The bypass structure according to claim 1, characterized in that, The adjusting member (20) has a guide hole (211) at one end near the valve core (30). The sealing assembly (31) includes a sealing member (311) and a first movable rod (312) connected to each other. The sealing member (311) can be tightly sealed against the liquid outlet (23). The first movable rod (312) is movably inserted into the guide hole (211).

6. The bypass structure according to claim 5, characterized in that, The valve cover (40) is provided with a limiting hole (41) at one end near the valve core (30). The sealing assembly (31) includes a sealing member (311) and a second movable rod (313) connected to each other. The sealing member (311) can be tightly sealed against the liquid outlet (23). The second movable rod (313) is movably inserted into the limiting hole (41). The second movable rod (313) is axially the same as the first movable rod (312).

7. The bypass structure according to claim 6, characterized in that, The second movable rod (313) is axially concentric with the first movable rod (312).

8. The bypass structure according to claim 1, characterized in that, The valve cover (40) is rotatably snapped into the second mounting port (12).

9. The bypass structure according to claim 1, characterized in that, A first connecting joint is formed at the inlet of the liquid inlet channel (101). The first connecting joint is used to connect to an external channel. The axial direction of the first connecting joint is set at an angle to the axial direction of the valve body (10); and / or A second connecting joint is formed at the outlet of the liquid outlet channel (102). The second connecting joint is used to connect to an external channel. The axial direction of the second connecting joint is set at an angle to the axial direction of the valve body (10).

10. A water outlet valve, characterized in that, include: The valve body (100) has a three-way valve chamber, a heating channel (110) and a heat exchange water inlet channel (120). The three-way valve chamber can be selectively connected to the heating channel (110) or the heat exchange water inlet channel (120). The bypass structure as described in any one of claims 1-9 is connected to the valve body (100), the liquid inlet channel (101) of the bypass structure is connected to the heating channel (110), and the liquid outlet channel (102) of the bypass structure is connected to the side of the three-way valve chamber near the heat exchange water inlet channel (120).

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