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, a one-way valve and a valve cover. The valve body is provided with a liquid inlet flow channel and a liquid outlet flow channel, and a mounting opening is further formed in the valve body; the one-way valve is arranged in the valve body and located between the liquid inlet flow channel and the liquid outlet flow channel, and a passage between the liquid inlet flow channel and the liquid outlet flow channel can be selectively opened and closed. And the valve cover is mounted at the mounting port and is propped against one side, deviating from the liquid inlet runner, of the one-way valve. According to the bypass structure, the one-way valve is directly arranged in the valve body and is fixed in an abutting mode through the valve deck, the structure is simple, installation is convenient, and the machining cost can be effectively reduced. The bypass structure is applied to the water outlet valve, the heat exchange and water outlet efficiency can be improved, the service life of the device is guaranteed, and the use experience feeling of customers is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas wall -hanging stove technical field especially, relates to a bypass structure and water outlet valve. BACKGROUND

[0002] Gas wall-hanging stove is used on wall-hanging stove heating system, wherein the inside has the bypass structure that can be used for bypassing the waterway of bathroom passage, prevents the water flow rate from slowing down due to the water resistance of ground heating pipeline, and further can avoid the water at the main heat exchanger from warming up too fast, produces overtemperature phenomenon. With the demand of reducing cost, the bypass structure has been converted from external to internal bypass. But the check valve in the bypass structure is usually arranged in the cavity integrated with the valve cover, and then the whole is inserted into the valve body, the installation difficulty of this structure is larger, and the structure is complex, the processing difficulty of the valve body and the valve cover is larger.

[0003] Therefore, a bypass structure and water outlet valve are needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0004] The utility model is aimed at providing a bypass structure to solve the problems of complex structure, large installation difficulty and large processing difficulty of valve body and valve cover.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A bypass structure comprises:

[0007] A valve body has a liquid inlet flow channel and a liquid outlet flow channel, and is further provided with a mounting port;

[0008] A check valve is arranged in the valve body and located between the liquid inlet flow channel and the liquid outlet flow channel, and can selectively open and close the passage between the liquid inlet flow channel and the liquid outlet flow channel;

[0009] A valve cover is mounted on the mounting port, the check valve comprises a valve sleeve, a valve core and an elastic member, the valve sleeve is arranged in the valve body, the valve core is movably arranged in the valve sleeve along the axial direction of the valve sleeve, the valve core is provided with a plugging member, the elastic member is sleeved on the outer periphery of the valve core, and one end of the elastic member is connected or abuts against the plugging member, the valve cover abuts against the side of the valve sleeve away from the liquid inlet flow channel, or the valve cover abuts against the elastic member, so as to limit and fix the check valve.

[0010] As a preferred, the valve body is further provided with a liquid outlet port, and the part of the valve cover away from the liquid outlet port abuts against the check valve, the side of the valve cover facing the check valve is provided with a liquid passing groove, the liquid passing groove is in communication with the liquid outlet port, so as to form the liquid outlet flow channel.

[0011] As a preferred, the axis of the valve cover does not coincide with the axis of the check valve.

[0012] Preferably, the valve cover comprises a plug and a limiting rib connected to the plug, the plug is sealingly installed in the installation opening, and the limiting rib is in abutment with the one-way valve at one end away from the plug.

[0013] Preferably, the valve body is further provided with a liquid outlet, the number of limiting ribs is at least two, and the at least two limiting ribs are arranged at intervals along the circumference of the plug, the interval between the adjacent two limiting ribs is communicated with the liquid outlet to form the liquid outlet flow channel.

[0014] Preferably, a first connecting joint is formed at the inlet of the liquid inlet flow channel, the first connecting joint is used for connecting an external flow channel, and the axis direction of the first connecting joint is arranged at an angle with the axis direction of the one-way valve; and / or

[0015] A second connecting joint is formed at the outlet of the liquid outlet flow channel, the second connecting joint is used for connecting an external flow channel, and the axis direction of the second connecting joint is arranged at an angle with the axis direction of the one-way valve.

[0016] Preferably, the valve cover is installed in the installation opening in cooperation with a plug-in part, the valve cover is provided with a limiting groove in the circumferential direction, and the plug-in part can pass through the valve body and extend into the limiting groove to position the valve cover.

[0017] Preferably, the valve cover is installed in the installation opening in cooperation with a plug-in part, the valve cover is provided with a limiting groove in the circumferential direction, and the plug-in part can pass through the valve body and extend into the limiting groove to position the valve cover.

[0018] Preferably, a first sealing member is arranged between the outer periphery of the one-way valve and the inner wall of the valve body; and / or

[0019] A second sealing member is arranged between the outer periphery of the valve cover and the installation opening.

[0020] Another purpose of the utility model is to provide a water outlet valve, so as to improve heat exchange and water outlet efficiency, ensure device service life, and improve customer use experience.

[0021] To achieve the purpose, the utility model adopts the following technical scheme:

[0022] A water outlet valve comprises:

[0023] A valve body has a three-way valve cavity, a heating channel and a heat exchange water inlet flow channel, and the three-way valve cavity is selectively communicated with the heating channel or the heat exchange water inlet flow channel;

[0024] The bypass structure is connected to the valve body, the liquid inlet flow channel of the bypass structure is communicated with the heating channel, and the liquid outlet flow channel of the bypass structure is communicated with the three-way valve cavity on the side close to the heat exchange water inlet flow channel.

[0025] The bypass structure has the advantages that:

[0026] The utility model discloses a bypass structure. The bypass structure includes a valve body, a one-way valve and a valve cover. The valve body has a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated through a flow channel. The one-way valve is arranged at one end of the flow channel close to the liquid outlet, and the one-way valve can control the on-off of the flow channel. The valve cover is arranged at the end of the valve body and abuts against the side of the one-way valve away from the flow channel. A liquid passing space is formed between the one-way valve and the valve cover, and the liquid passing space is communicated with the liquid outlet. The bypass structure directly arranges the one-way valve in the valve body, and fixes the one-way valve through the valve cover. The bypass structure has a simple structure, low installation difficulty, low processing difficulty of the valve body and the valve cover, and low manufacturing cost.

[0027] The utility model discloses still a kind of water outlet valve. The water outlet valve applies above-mentioned bypass structure, can improve heat exchange and water outlet efficiency, guarantee device service life, improve customer's use experience. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the shaft side view of the bypass structure provided by the utility model;

[0029] Figure 2 It is the cross-sectional view of bypass structure embodiment one provided by the utility model;

[0030] Figure 3 It is the cross-sectional view of bypass structure embodiment two provided by the utility model;

[0031] Figure 4 It is the cross-sectional view of bypass structure embodiment three provided by the utility model;

[0032] Figure 5 It is the front view of the water outlet valve provided by the utility model;

[0033] Figure 6 It is the back view of the water outlet valve provided by the utility model.

[0034] In the drawing:

[0035] 10, valve body; 11, mounting port; 12, liquid outlet; 13, reverse buckle; 101, liquid inlet flow channel; 102, liquid outlet flow channel;

[0036] 20, one-way valve; 21, valve sleeve; 211, inlet; 212, outlet; 22, valve core; 221, plugging element; 23, elastic element;

[0037] 30, valve cover; 31, liquid passing groove; 32, limiting rib; 321, sleeving part; 322, movable groove; 33, plug; 34, liquid passing space;

[0038] 40, plug-in part;

[0039] 50, first sealing member;

[0040] 60, second sealing member;

[0041] 100, valve body; 110, heating passage; 120, heat exchange water inlet flow channel; 130, hot water inlet; 140, heat exchange water outlet flow channel; 150, bathroom passage. DETAILED DESCRIPTION

[0042] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0043] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0044] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0045] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0046] The gas wall-hanging stove is used in a wall-hanging stove heating system, wherein an internal bypass structure capable of bypassing a bathroom passage waterway is provided to prevent water flow rate from slowing down due to large water resistance of the floor heating pipeline, thereby avoiding the water at the main heat exchanger from being heated too quickly to cause over-temperature phenomenon. With the demand for cost reduction, the bypass structure has been converted from external to internal bypass. However, the check valve in the bypass structure is usually arranged in a cavity integrated with a valve cover, and then the whole is inserted into the valve body. Such structure has large installation difficulty, complex structure, and large processing difficulty of the valve body and the valve cover.

[0047] To solve the above technical problems, a bypass structure is provided in the present embodiment. As shown in Figures 1-4 The bypass structure includes a valve body 10, a check valve 20, and a valve cover 30. The valve body 10 has an inlet flow channel 101 and an outlet flow channel 102, and further has a mounting port 11. The check valve 20 is arranged in the valve body 10 and located between the inlet flow channel 101 and the outlet flow channel 102, and can selectively open and close the passage between the inlet flow channel 101 and the outlet flow channel 102. The valve cover 30 is mounted in the mounting port 11 and abuts against the side of the check valve 20 away from the inlet flow channel 101.

[0048] In this bypass structure, the check valve 20 is directly arranged between the inlet flow channel 101 and the outlet flow channel 102 of the valve body 10. When the fluid pressure in the inlet flow channel 101 is lower than the preset pressure of the check valve 20, the fluid cannot enter the outlet flow channel 102. When the fluid pressure is greater than the preset pressure of the check valve 20, the check valve 20 can open the passage between the inlet flow channel 101 and the outlet flow channel 102, so that the fluid can flow back through the outlet flow channel 102. The valve body 10 further has the mounting port 11, and the valve cover 30 can be directly inserted into the mounting port 11, that is, abut against the side of the check valve 20 away from the inlet flow channel 101, thereby fixing the check valve 20. Such arrangement not only simplifies the overall structure of the valve body 10 and the valve cover 30, reduces the processing difficulty of the valve body 10 and the valve cover 30, but also improves the convenience of installing the check valve 20 and the valve cover 30.

[0049] It should be noted that, as Figures 1-4As shown, the one-way valve 20 comprises a valve sleeve 21 (having an inlet 211 and an outlet 212 at two ends respectively), a valve core 22 and an elastic member 23. The valve sleeve 21 is arranged in the valve body 10, the valve cover 30 abuts against the end of the valve sleeve 21 away from the liquid inlet channel 101, the valve core 22 is arranged in the valve sleeve 21 in the axial direction, the valve core 22 is provided with a blocking member 221, the elastic member 23 is sleeved on the outer periphery of the valve core 22, one end of the elastic member 23 is connected with or abuts against the blocking member 221, and the other end is connected with or abuts against one end of the outlet 212 of the valve sleeve 21. In the natural state, the elastic force of the elastic member 23 can push the blocking member 221 to block the inlet 211 of the valve sleeve 21, at this time the one-way valve 20 can cut off the passage between the liquid inlet channel 101 and the liquid outlet channel 102; when the fluid pressure in the liquid inlet channel 101 increases, the fluid can push the valve core 22 to compress the elastic member 23, at this time the side of the blocking member 221 away from the elastic member 23 no longer blocks the inlet 211, so that the fluid can enter through the inlet 211 and flow out through the outlet 212, and then be discharged through the liquid outlet channel 102; when the liquid inlet channel 101 is no longer supplied with fluid, the elastic force of the elastic member 23 reversely pushes the blocking member 221 to make the side of the blocking member 221 away from the elastic member 23 re-block the inlet 211. The elastic member 23 in the embodiment is a spring, which has simple structure, low price, is convenient to install and use, and can effectively reduce the manufacturing difficulty and cost.

[0050] In the embodiment, the valve body 10 is provided with a liquid inlet 11, the valve cover 30 is provided with a liquid inlet channel 101, the liquid inlet channel 101 is connected with the liquid inlet 11, and the liquid inlet channel 101 is connected with the one-way valve 20. Figure 2 As shown, the valve body 10 is further provided with a liquid outlet 12, the axis of the valve cover 30 does not coincide with the axis of the one-way valve 20, and the part of the valve cover 30 away from the liquid outlet 12 abuts against the one-way valve 20, the side of the valve cover 30 facing the one-way valve 20 is provided with a liquid passing groove 31, the liquid passing groove 31 is connected with the liquid outlet 12 to form a liquid outlet channel 102. Since the valve cover 30 and the one-way valve 20 are arranged eccentrically, the edge part of the valve cover 30 can abut against the valve sleeve 21 of the one-way valve 20, since the diameter of the one-way valve 20 is smaller than the diameter of the valve cover 30, the side of the one-way valve 20 not abutting against the valve cover 30 is located in the liquid passing groove 31, and a passage is formed between the liquid passing groove 31 and the liquid outlet channel 102 due to the difference in diameter, the passage is connected with the liquid passing groove 31 and the liquid outlet 12, so that the liquid can smoothly flow through the liquid passing groove 31 and the liquid outlet channel 102 after passing through the outlet 212 of the one-way valve 20, and then be discharged through the liquid outlet 12. The structure is simple, convenient to install, and has good liquid outlet effect.

[0051] In the embodiment, the valve body 10 is provided with a liquid inlet 11, the valve cover 30 is provided with a liquid inlet channel 101, the liquid inlet channel 101 is connected with the liquid inlet 11, and the liquid inlet channel 101 is connected with the one-way valve 20. Figure 3As shown, the valve cover 30 comprises a plug 33 and a limiting rib 32 connected to the plug 33, the plug 33 is sealingly installed in the installation port 11, and the end of the limiting rib 32 away from the plug 33 abuts against the one-way valve 20. The plug 33 is used to block the installation port 11, thereby ensuring the sealing of the valve body 10; and the limiting rib 32 at the other end of the plug 33 can abut and limit the one-way valve 20, thereby ensuring the stability of the one-way valve 20 and preventing it from shaking during use, thereby ensuring the safety of use. It should be noted that in this embodiment, the valve body 10 is also provided with a liquid outlet 12, and the plug 33 is coaxially arranged with the one-way valve 20. In this structure, since the plug 33 is coaxially arranged with the one-way valve 20, the abutting force of the limiting rib 32 on the one-way valve 20 is uniformly distributed on the outer periphery of the valve sleeve 21, thereby enabling better fixing effect and more stable limiting.

[0052] It should be noted that, as Figure 3 shown, the number of limiting ribs 32 is at least two, and the at least two limiting ribs 32 are spaced and uniformly arranged along the circumference of the plug 33, and the space between the adjacent two limiting ribs 32 is communicated with the liquid outlet 12 to form a liquid outlet flow channel 102. The plurality of limiting ribs 32 can ensure good limiting effect, and the plurality of limiting ribs 32 are uniformly spaced and arranged, which can also improve the uniformity of the force received by the one-way valve 20, and the space between the plurality of limiting ribs 32 is communicated with the liquid outlet 12, which can ensure the smoothness of the liquid outlet.

[0053] In embodiment three, as Figure 4 shown, the valve body 10 is also provided with a liquid outlet 12, the plug 33 is coaxially arranged with the one-way valve 20, and the limiting rib 32 directly abuts against the elastic member 23, the limiting rib 32 is provided with a movable groove 322 in the axial direction, and the end of the valve core 22 away from the movable groove 322 can slide in the axial direction. In this structure, the outer periphery of the limiting rib 32 and the inner wall of the valve body 10 form a liquid passing space 34, the liquid passing space 34 is communicated with the liquid outlet 12 to form a liquid outlet flow channel 102, and after the liquid passes through the inlet 211, it can directly flow into the liquid passing space 34 and then be discharged through the liquid outlet 12. This arrangement can further simplify the overall structure of the valve sleeve 21, and the valve sleeve 21 does not need to form a matching relationship with the limiting rib 32, but only needs to abut the elastic member 23 with the limiting rib 32.

[0054] In addition, in order to ensure a stable connection relationship, in embodiment three, as Figure 4 shown, the end of the limiting rib 32 further extends a sleeve connecting portion 321, the diameter of the sleeve connecting portion 321 is smaller than the diameter of the limiting rib 32, so that the elastic member 23 can first be sleeved on the outer periphery of the sleeve connecting portion 321, and then abut against the limiting rib 32, thereby ensuring the stability of the connection.

[0055] For convenient connection, as Figures 1-4As shown, a first connecting joint is formed at the inlet of the liquid inlet flow channel 101, the first connecting joint is used to connect an external flow channel, and the axis direction of the first connecting joint is arranged at an angle with the axis direction of the one-way valve 20; and / or a second connecting joint is formed at the outlet of the liquid outlet flow channel 102, the second connecting joint is used to connect an external flow channel, and the axis direction of the second connecting joint is arranged at an angle with the axis direction of the one-way valve 20. In this arrangement, the first connecting joint and the second connecting joint can greatly improve the convenience of connecting the bypass structure, and at the same time, since the two are arranged at an angle with the axis of the one-way valve 20 respectively or individually, the installation efficiency can be ensured when the internal structure of the product is relatively complex.

[0056] It should be noted that the adapter of the pipeline is a right angle. In embodiments one to three, the first connecting joint and the second connecting joint exist at the same time, and the axes of the first connecting joint and the second connecting joint are perpendicular to the axis of the one-way valve 20 (the axes of the first connecting joint and the second connecting joint are parallel to each other), thereby improving the convenience of installing the bypass structure inside the product. In other embodiments, the angle of the angle can be selectively processed according to actual needs.

[0057] In addition, the valve cover 30 and the mounting port 11 are detachably connected. The detachable connection relationship can facilitate subsequent maintenance and replacement. When the valve body 10 or the one-way valve 20 is blocked, the valve cover 30 can be quickly detached for dredging, avoiding long-term impact on normal operation.

[0058] Specifically, as shown in the drawings, Figures 2-4 The valve cover 30 is installed in the mounting port 11 through the plug-in part 40, the valve cover 30 is provided with a limiting groove in the circumferential direction, and the plug-in part 40 can pass through the valve body 10 (the valve body 10 is provided with a plug-in hole) and extend into the limiting groove to position the valve cover 30. First, insert the valve cover 30 into the mounting port 11, and then use the plug-in part 40 to extend into the plug-in hole and cooperate with the limiting groove on the valve cover 30 in the mounting port 11 to limit the valve cover 30. When disassembly is required, the plug-in part 40 is pulled out of the limiting groove, at which time the plug-in part 40 is no longer simultaneously limited in the plug-in hole and the limiting groove, and the valve cover 30 can be directly removed.

[0059] It should be noted that, as shown in the drawings, Figures 1-4 The valve body 10 is provided with two plug-in holes, and the plug-in part 40 is a U-shaped part, the two ends of the U-shaped part can be inserted into the two plug-in holes at the same time, and can enter the limiting groove at the same time, to ensure the limiting effect. Since the limiting groove is arranged in the circumferential direction, both ends of the U-shaped part can quickly extend into the limiting groove, improving the installation speed. In addition, the valve body 10 is provided with a reverse buckle 13, the reverse buckle 13 can abut to the cross bar of the plug-in part 40 which does not extend into the limiting groove, thereby preventing the plug-in part 40 from falling out of the limiting groove during use, thereby indirectly ensuring the stability of the valve cover 30, and indirectly ensuring the stability of the one-way valve 20.

[0060] In some embodiments, the valve cover 30 is screw-fitted to the mounting port 11. The fixation of the valve cover 30 is achieved by a self-locking rotation, while a detachable connection relationship is also ensured.

[0061] In other embodiments, the valve cover 30 is interference-fitted to the mounting port 11. In order to more quickly dismount the valve cover 30, the interference-fitted cooperation mode can also be adopted, thereby improving the dismounting efficiency.

[0062] It should be noted that, as shown in Figures 2-4 , a first sealing member 50 is arranged between the outer periphery of the one-way valve 20 (i.e., the outer periphery of the valve sleeve 21) and the inner wall of the valve body 10; and / or a second sealing member 60 is arranged between the outer periphery of the valve cover 30 (i.e., the outer periphery of the plug 33) and the mounting port 11. Such arrangement can ensure the sealing property of the bypass structure, avoid liquid leakage from the gap between the valve sleeve 21 and the valve body 10, and also avoid liquid leakage from the gap between the plug 33 and the valve body 10, thereby ensuring good sealing property.

[0063] It should be further noted that, in Embodiment One to Embodiment Three, the outer periphery of the one-way valve 20 is provided with the first sealing member 50, and the outer periphery of the valve cover 30 is provided with the second sealing member 60, thereby ensuring the sealing property of the bypass structure. In addition, the first sealing member 50 and the second sealing member 60 are both O-shaped sealing rings, and the outer peripheries of the valve sleeve 21 and the plug 33 are both provided with limiting grooves, and the O-shaped sealing ring can be placed in the limiting groove. The sealing principle of the O-shaped sealing ring is simple, and the manufacturing cost is reduced; and the O-shaped sealing ring is placed in the limiting groove, and the O-shaped sealing ring will not shake when the one-way valve 20 and the valve cover 30 are installed, thereby effectively improving the installation convenience.

[0064] In addition to the above, the present embodiment also provides a water outlet valve, as shown in Figure 5 and Figure 6 , which is applied to a waterway system. The water outlet valve comprises a valve main body 100 and the above bypass structure. The valve main body 100 has a three-way valve cavity, a heating passage 110, and a heat exchange water inlet flow channel 120. The three-way valve cavity is selectively connected with the heating passage 110 or the heat exchange water inlet flow channel 120. The bypass structure is connected to the valve main body 100. The liquid inlet flow channel 101 of the bypass structure is connected with the heating passage 110. The liquid outlet flow channel 102 of the bypass structure is connected with the side of the three-way valve cavity close to the heat exchange water inlet flow channel 120.

[0065] Specifically, the waterway system comprises 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 6The water outlet valve is shown, the combustion chamber is communicated with the hot water inlet 130 of the water outlet valve, the heating channel 110 is communicated with the heating system, the heat exchange inlet flow channel 120 of the water outlet valve is communicated with the water inlet of the heat exchange structure, the water outlet of the heat exchange structure is communicated with the heat exchange outlet flow channel 140, so that the bathroom channel 150 of the water outlet valve can discharge domestic water.

[0066] In summary, the bypass structure is not only simple in structure, but also small in installation difficulty, the machining difficulty of the valve body 10 and the valve cover 30 is low, and the manufacturing cost is effectively reduced.

[0067] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the embodiments cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A bypass structure, characterized by, The utility model relates to a valve body (10) with a liquid inlet channel (101) and a liquid outlet channel (102), and a mounting port (11) is further arranged on the valve body (10); a one-way valve (20) is arranged in the valve body (10) and located between the liquid inlet channel (101) and the liquid outlet channel (102), and the one-way valve (20) can selectively open and close the passage between the liquid inlet channel (101) and the liquid outlet channel (102); a valve cover (30) is mounted on the mounting port (11), the one-way valve (20) comprises a valve sleeve (21), a valve core (22) and an elastic member (23), the valve sleeve (21) is arranged in the valve body (10), the valve core (22) is movably arranged in the valve sleeve (21) along the axial direction of the valve sleeve (21), the valve core (22) is provided with a blocking member (221), the elastic member (23) is sleeved on the outer periphery of the valve core (22), and one end of the elastic member (23) is connected with or abuts against the blocking member (221), the valve cover (30) abuts against the side of the valve sleeve (21) away from the liquid inlet channel (101), or the valve cover (30) abuts against the elastic member (23) to limit and fix the one-way valve (20). The valve body (10) is further provided with a liquid outlet (12), and the part of the valve cover (30) away from the liquid outlet (12) abuts against the one-way valve (20), the side of the valve cover (30) facing the one-way valve (20) is provided with a liquid passing groove (31), and the liquid passing groove (31) is connected with the liquid outlet (12) to form the liquid outlet channel (102). The axis of the valve cover (30) is not coincident with the axis of the one-way valve (20). The valve cover (30) comprises a plug (33) and a limiting rib (32) connected to the plug (33), the plug (33) is sealingly mounted on the mounting port (11), and the end of the limiting rib (32) away from the plug (33) abuts against the one-way valve (20).

2. The bypass structure according to claim 1, characterized in that The valve body (10) is further provided with a liquid outlet (12), the number of the limiting ribs (32) is at least two, the limiting ribs (32) are arranged at intervals along the circumference of the plug (33), the interval between the adjacent two limiting ribs (32) is connected with the liquid outlet (12) to form the liquid outlet channel (102).

3. The bypass structure of claim 2, wherein, A first connecting joint is formed at the inlet of the liquid inlet channel (101), the first connecting joint is used for connecting an external channel, and the axis direction of the first connecting joint is arranged at an angle with the axis direction of the one-way valve (20); and / or 4. The bypass structure of claim 1, wherein A second connecting joint is formed at the outlet of the liquid outlet channel (102), the second connecting joint is used for connecting an external channel, and the axis direction of the second connecting joint is arranged at an angle with the axis direction of the one-way valve (20).

5. The bypass structure of claim 4, wherein ​ 6. The bypass structure of claim 1, wherein ​ ​ 7. The bypass structure of claim 1, wherein The valve cover (30) is matched and installed with the mounting port (11) through a plug (40), the valve cover (30) is provided with a limiting groove in the circumferential direction, and the plug (40) can pass through the valve body (10) and extend into the limiting groove to position the valve cover (30).

8. The bypass structure of claim 1, wherein The valve cover (30) is threadedly matched and installed in the mounting port (11); or the valve cover (30) is inserted into the mounting port (11) in an interference fit.

9. The bypass structure of claim 1, wherein A first sealing member (50) is arranged between the outer periphery of the one-way valve (20) and the inner wall of the valve body (10); and / or A second sealing member (60) is arranged between the outer periphery of the valve cover (30) and the mounting port (11).

10. A water outlet valve characterized by Comprise: A valve body (100) has a three-way valve cavity, a heating channel (110) and a heat exchange water inlet flow channel (120), the three-way valve cavity is selectively communicated with the heating channel (110) or the heat exchange water inlet flow channel (120); The bypass structure connected to the valve body (100) is as claimed in any one of claims 1-9, the liquid inlet flow channel (101) of the bypass structure is communicated with the heating channel (110), and the liquid outlet flow channel (102) of the bypass structure is communicated with the side of the three-way valve cavity close to the heat exchange water inlet flow channel (120).

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