Valve seat, control valve and water heater

Abstract

The utility model discloses a valve seat, a control valve and a water heater, and the valve seat comprises a base and a bypass pipe; the base is provided with a water inlet port, a water outlet port and a bypass port, and a main flow channel for communicating the water inlet port with the water outlet port and a reversing flow channel for communicating the main flow channel with the bypass port are formed in the base; one end of the bypass pipe is in butt joint communication with the bypass port, and the other end of the bypass pipe is provided with a bypass water outlet communicated with the bypass port. According to the technical scheme, by optimizing the structure of the valve seat, the control valve with the valve seat can be directly installed on a main water path, and by means of the control valve with the valve seat, water flow of the two main water paths can be mixed in a bypass mode. Therefore, according to the technical scheme, the bypass branch only needs to be installed and connected with a pipeline of a main water path, the connecting structure of the valve seat and the water path assembly is simplified, and therefore the installation structure of the bypass branch can be simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of gas water heaters, and particularly relates to a valve seat, a control valve and a water heater. Background Art

[0002] In a water heater, in order to facilitate the rapid adjustment of the water temperature of the outlet water, it is usually necessary to add a bypass branch between the inlet water pipe and the outlet water pipe. An electromagnetic valve for controlling the on or off of the bypass branch is provided on the bypass branch. When the water temperature of the outlet water pipe is too high, the bypass branch is put into a through state, and cold water can be introduced from the inlet water through the bypass branch, so that the water temperature can be quickly adjusted to the temperature required by the user. However, in the above solution, at least four welding points are required between the valve seat of the bypass branch and the inlet water pipe, and between the valve seat of the bypass branch and the outlet water pipe. There are many welded parts, and the assembly process is relatively complicated. Summary of the Utility Model

[0003] The main object of the utility model is to propose a valve seat, aiming to simplify the installation structure of the bypass branch.

[0004] To achieve the above object, the valve seat proposed by the utility model includes:

[0005] A base having a water inlet port, a water outlet port and a bypass port. A main flow channel for communicating the water inlet port with the water outlet port, and a commutating flow channel for communicating the main flow channel with the bypass port are formed inside the base; and

[0006] A bypass pipe, one end of the bypass pipe is butt-connected and communicated with the bypass port, and the other end of the bypass pipe is provided with a bypass water outlet communicated with the bypass port.

[0007] In an embodiment, the base includes a main pipe body and a commutating pipe body arranged inside the main pipe body; the main flow channel is formed inside the main pipe body, the commutating flow channel is formed inside the commutating pipe body, the main pipe body is provided with the water inlet port, the water outlet port and the bypass port, one end of the commutating pipe body is communicated with the bypass port, and the other end of the commutating pipe body is communicated with the main flow channel.

[0008] In an embodiment, the main pipe body includes a main part, and a water inlet part and a water outlet part respectively arranged on both sides of the main part. The main part has an inner cavity and the bypass port, the commutating pipe body is arranged in the inner cavity, the water inlet part has the water inlet port and an inlet water flow channel, the water outlet part has the water outlet port and an outlet water flow channel, and the inlet water flow channel, the inner cavity and the outlet water flow channel are sequentially communicated to form the main flow channel.

[0009] In one embodiment, the commutation flow channel has a first flow channel and a second flow channel. One end of the first flow channel is communicated with the main flow channel, and the other end of the first flow channel is communicated with the bypass port via the second flow channel. The cross-sectional area of the first flow channel is larger than that of the second flow channel.

[0010] In one embodiment, a first limiting flange is provided on the inner peripheral surface of the commutation pipe body. The first limiting flange is located between the first flow channel and the second flow channel. The first limiting flange has a flow-through port that communicates the first flow channel with the second flow channel. One end of the bypass pipe is inserted into the second flow channel and can abut against the first limiting flange.

[0011] In one embodiment, one end of the second flow channel close to the bypass port is tapered.

[0012] In one embodiment, the inner diameter of the water inlet part is not less than 9.0 mm and not more than 15.0 mm;

[0013] And / or, the inner diameter of the water outlet part is not less than 9.0 mm and not more than 15.0 mm;

[0014] And / or, the inner diameter of the bypass pipe is not less than 2.5 mm and not more than 5.0 mm.

[0015] In one embodiment, the axis of the main pipe body is perpendicular to the axis of the commutation pipe body.

[0016] In one embodiment, the base and the bypass pipe are integrally formed; or, the base is fixedly welded to the bypass pipe body.

[0017] In one embodiment, the base further has an installation opening. The base is provided with an installation part at the installation opening. The installation part is used for installing a valve core, and the valve core is used for controlling the connection or disconnection of the commutation flow channel.

[0018] The present utility model further provides a control valve, which includes:

[0019] The valve seat according to any one of the foregoing embodiments; and

[0020] A valve core, arranged on the valve seat, and the valve core is used for controlling the water flow rate of the commutation flow channel.

[0021] The present utility model further provides a water heater, which includes:

[0022] A water circuit assembly, the water circuit assembly includes a water inlet pipe and a water outlet pipe; and

[0023] The control valve described in the foregoing embodiments, wherein the base is installed on the water inlet pipe, and the main flow channel is communicated with the water inlet pipe; the bypass water outlet is communicated with the water outlet pipe.

[0024] Alternatively, the base is installed on the water outlet pipe, the main flow channel is communicated with the water outlet pipe; the bypass water outlet is communicated with the water inlet pipe.

[0025] Through the optimization of the valve seat structure in the technical solution of the present utility model, the control valve with such a valve seat can be directly installed on a main water path. By using the control valve with such a valve seat, the water flows of the two main water paths can be bypassed and mixed. In this way, the technical solution of the present utility model only needs to be installed and connected to the pipeline of one main water path, simplifying the connection structure between the valve seat and the water path components, thereby being able to simplify the installation structure of the bypass branch. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0027] Figure 1 It is a schematic structural diagram of an embodiment of a water heater of the present utility model;

[0028] Figure 2 It is Figure 1 The schematic structural diagram after hiding the water heater cover;

[0029] Figure 3 It is Figure 2 A side view of

[0030] Figure 4 It is Figure 2 Another side view of

[0031] Figure 5 It is Figure 2 The schematic structural diagram of an embodiment of the heat exchanger and the water path components in

[0032] Figure 6 It is a schematic structural diagram of an embodiment of the valve body of the present utility model;

[0033] Figure 7 It is Figure 6 A side view of

[0034] Figure 8 It is Figure 7 The cross-sectional view taken along A-A in

[0035] Figure 9 is Figure 6 a schematic structural view of an embodiment of the middle base;

[0036] Figure 10 is Figure 9 a side view of;

[0037] Figure 11 is Figure 10 a sectional view taken along line B - B in;

[0038] Explanation of the reference numerals in the drawings:

[0039]

[0040]

[0041] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0043] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0045] The present utility model provides a valve seat, aiming to simplify the installation structure of the bypass branch. For the convenience of understanding and explanation, in the attached drawings of the specification of the present utility model Figures 1 to 11 In the drawings, the space, groove or hole is indicated by a solid arrow.

[0046] During actual use, the valve seat 10 is usually used in cooperation with the valve core 11. The valve seat 10 and the valve core 11 together form a complete control valve 1, so as to control the water flow rate of certain waterways. Controlling the water flow rate of certain waterways can be achieved by the valve core 11 controlling the on-off of the commutation flow channel 102 of the valve seat 10 to realize the switching between having flow and no flow; it can also be achieved by the valve core 11 (such as a proportional valve) adjusting the cross-sectional area of the commutation flow channel 102 of the valve seat 10 to realize the adjustment of the flow rate (such as realizing the switching between flow rate gears such as large flow rate, medium flow rate, small flow rate, and no flow rate). The valve core 11 is usually installed on the valve seat 10. The waterway assembly 3 using the valve seat 10 usually includes two main waterways. The valve seat 10 can be installed on any one of the main waterways. By using the control valve 1 with the valve seat 10, the water flows of the two main waterways can be bypassed and mixed, and the space occupied by the bypass branch and its control valve 1 is small, and the connection structure between the valve seat 10 of the control valve 1 and the main pipeline is relatively simple.

[0047] Next, the structure of the valve seat 10 will be mainly described.

[0048] In the embodiment of the present utility model, as Figures 1 to 11 shown, the valve seat 10 includes a base 100 and a bypass pipe 200; the base 100 has a water inlet port 103, a water outlet port 104 and a bypass port 105. A main flow channel 101 that connects the water inlet port 103 and the water outlet port 104 is formed in the base 100, and a commutation flow channel 102 that connects the main flow channel 101 and the bypass port 105; one end of the bypass pipe 200 is connected and communicated with the bypass port 105, and the other end of the bypass pipe 200 is provided with a bypass water outlet 201 that is communicated with the bypass port 105.

[0049] To clearly illustrate the technical solution of the present utility model, taking the water heater 1000 as an example, a further elaboration will be made. The waterway assembly 3 of the water heater 1000 usually includes a water inlet pipe 31 and a water outlet pipe 32, and a bypass branch is provided between the water inlet pipe 31 and the water outlet pipe 32 to realize the function of bypass mixing water. The valve seat 10 can be installed on the water inlet pipe 31, or the valve seat 10 can be installed on the water outlet pipe 32.

[0050] Taking the valve seat 10 installed on the water inlet pipe 31 as an example, as Figure 5As shown, during the specific installation process, the water inlet pipe 31 is usually cut off at a certain position, that is to say, the water inlet pipe 31 is divided into two sections of pipes, the valve seat 10 is arranged in the middle of the two sections of pipes, the main flow channel 101 of the valve seat 10 is water-conductively connected to the water inlet pipe 31, the water inlet port 103 of the valve seat 10 is butt-connected and communicated with one section of the water inlet pipe 31, and the water outlet port 104 of the valve seat 10 is butt-connected and communicated with the other section of the water inlet pipe 31. The bypass water outlet 201 of the bypass pipe 200 is communicated with the water outlet pipe 32. The bypass water outlet 201 can be communicated with the water outlet pipe 32 through other adapter parts, or an opening is provided on the circumferential side of the water outlet pipe 32, the bypass water outlet 201 is butt-connected and communicated with the opening, and the bypass pipe 200 is hermetically connected to the water outlet pipe 32.

[0051] Preferably, a second limiting flange 210 is provided at one end of the bypass pipe 200 close to the bypass water outlet 201. Among them, the second limiting flange 210 can be a plurality of convex point parts arranged along the circumferential direction of the bypass pipe 200, or the second limiting flange 210 can be a convex ring arranged along the circumferential extension of the bypass pipe 200. In this way, it is convenient for the installation of the bypass pipe 200 and the water outlet pipe 32. When the bypass pipe 200 and the water outlet pipe 32 are selected to be connected by welding, the setting of the second limiting flange 210 can make the sealing performance between the bypass pipe 200 and the water outlet pipe 32 better, and during the welding process, the difficulty of the welding operation is lower.

[0052] It should be understood that the shapes of the water inlet port 103, the water outlet port 104, the bypass port 105 and the bypass water outlet 201 can be regular shapes such as circular, oval, rectangular or polygonal, or other irregular shapes. Preferably, the shapes of the water inlet port 103, the water outlet port 104, the bypass port 105 and the bypass water outlet 201 are circular.

[0053] Through the optimization of the structure of the valve seat 10 in the technical solution of the present invention, the control valve 1 having the valve seat 10 can be directly installed on a main water path. By using the control valve 1 having the valve seat 10, the water flows of the two main water paths can be bypassed and mixed. In this way, the technical solution of the present invention only needs to be installed and connected to the pipeline of one main water path, simplifies the connection structure between the valve seat 10 and the water path components, and thus can simplify the installation structure of the bypass branch.

[0054] Please refer to Figure 10 and Figure 11In an exemplary embodiment, the base 100 includes a main body 110 and a reversing tube body 120 disposed in the main body 110; the main body 110 forms the main flow channel 101, the reversing tube body 120 forms the reversing flow channel 102, the main body 110 is provided with the water inlet port 103, the water outlet port 104 and the bypass port 105, one end of the reversing tube body 120 is communicated with the bypass port 105, and the other end of the reversing tube body 120 is communicated with the main flow channel 101. In this way, by embedding the reversing tube body 120 in the main body 110, the structure of the base 100 is more compact, and the base 100 is more conducive to miniaturization.

[0055] The axis of the main body 110 and the axis of the reversing body 120 are arranged at an angle, that is, the flow direction of the main channel 101 is usually not parallel to the flow direction of the reversing channel 102. Preferably, considering that the water inlet pipe 31 and the water outlet pipe 32 are usually arranged side by side in the water heater 1000, in order to shorten the length of the bypass pipe 200 as much as possible, save the material used for the bypass pipe 200, and reduce the occupied area of ​​the bypass pipe 200, so as to make the overall structure of the waterway assembly 3 more compact, the axis of the main body 110 and the axis of the reversing body 120 are arranged perpendicularly.

[0056] For further information, please refer to Figure 8 and Figure 11 In another embodiment, the main body 110 includes a main body 111, and a water inlet portion 112 and a water outlet portion 113 respectively arranged on both sides of the main body 111, the main body 111 has an inner cavity 101a and the bypass port 105, the reversing tube body 120 is arranged in the inner cavity 101a, the water inlet portion 112 has the water inlet port 103 and the water inlet channel 101b, the water outlet portion 113 has the water outlet port 104 and the water outlet channel 101c, the water inlet channel 101b, the inner cavity 101a and the water outlet channel 101c are connected in sequence to form the main channel 101.

[0057] Among them, in order to make the valve seat 10 adapt to the existing water channel assembly 3, thereby improving the compatibility of the valve seat 10 and the water channel assembly 3, the water inlet 112 and the water outlet 113 are usually also tubularly arranged, and the water inlet 112 and the water outlet 113 and the pipelines installed therein are usually connected by welding. Of course, threaded connection and other connection methods can also be used, which will not be explained in detail here.

[0058] Considering that the water temperature of the water inlet pipe 31 is usually relatively low and the temperature of the water outlet pipe 32 is relatively high, the valve seat 10 is arranged on the water inlet pipe 31, so that the temperature of its environment is relatively low, and the control valve 1 is not easily aged, thereby improving the service life of the control valve 1. Of course, in another embodiment, the base 100 is installed on the water outlet pipe 32, and the main flow channel 101 is communicated with the water outlet pipe 32; the bypass water outlet 201 is communicated with the water inlet pipe 31. Therefore, taking the valve seat 10 installed on the water inlet pipe 31 of the water heater 1000 as an example, the following description will be given.

[0059] To facilitate the connection between the valve seat 10 and the water inlet pipe 31, improve the sealing performance of the connection between the valve seat 10 and the water inlet pipe 31, and avoid water leakage, usually one end of a section of the water inlet pipe 31 is inserted into the water inlet part 112, the outer side wall of the water inlet pipe 31 abuts against the wall of the water inlet flow channel 101b in the water inlet part 112, one end of another section of the water inlet pipe 31 is inserted into the water inlet part 112, and the outer side wall of the water inlet pipe 31 abuts against the wall of the water outlet flow channel 101c in the water outlet part 113.

[0060] In one embodiment, in order to enable the water in the main flow channel 101 to flow better into the commutation flow channel 102, the commutation flow channel 102 has a first flow channel 101a and a second flow channel 102b. One end of the first flow channel 101a is communicated with the main flow channel 101, and the other end of the first flow channel 101a is communicated with the bypass port 105 via the second flow channel 102b. The cross-sectional area of the first flow channel 101a is larger than the cross-sectional area of the second flow channel 102b. Compared with the embodiment where the cross-sectional area of the commutation flow channel 102 is the same, or the embodiment where the cross-sectional area of the first flow channel 101a is smaller than the cross-sectional area of the second flow channel 102b, in this embodiment, the cross-sectional area of the first flow channel 101a is larger than the cross-sectional area of the second flow channel 102b, which can enable the water in the main flow channel 101 to flow better into the commutation flow channel and reduce the generation of noise at the junction of the main flow channel and the commutation flow channel.

[0061] On the basis of the previous embodiment, a first limiting flange 130 is provided on the inner peripheral surface of the commutation pipe body 120. The first limiting flange 130 is located between the first flow channel 101a and the second flow channel 102b. The first limiting flange 130 has a flow-through port 106 that communicates the first flow channel 101a with the second flow channel 102b. One end of the bypass pipe 200 is inserted into the second flow channel 102b and can abut against the first limiting flange 130.

[0062] In another preferred embodiment, in order to facilitate the installation of the bypass pipe 200 to the base 100, one end of the second flow channel 102b close to the bypass port 105 is gradually expanded. In this way, when installing the bypass pipe 200 onto the base 100, the flow channel wall surface of the second flow channel 102 can guide the bypass pipe 200 into the second flow channel 102b. In particular, in the embodiment where the outer side wall of the bypass pipe 200 and the inner side wall of the commutation pipe body 120 are in an abutting connection manner to improve the sealing performance between the bypass pipe 200 and the commutation pipe body 120, the effect is better.

[0063] In one embodiment, the base 100 further has an installation opening 107, and the base 100 is provided with an installation part 140 at the installation opening 107. The installation part 140 is used for installing the valve core 11, and the valve core 11 is used for controlling the water flow rate of the commutation flow channel 102. The installation part 140 and the valve core 11 are usually connected by threads to ensure the stability of the connection between the valve core 11 and the valve seat 10. Of course, the valve core 11 and the valve seat 10 can also adopt other detachable connection methods or other fixed connection methods.

[0064] In yet another embodiment, the inner diameter of the water inlet part 112 is not less than 9.0 mm and not more than 15.0 mm; and / or, the inner diameter of the water outlet part 113 is not less than 9.0 mm and not more than 15.0 mm; and / or, the inner diameter of the bypass pipe 200 is not less than 2.5 mm and not more than 5.0 mm.

[0065] Please refer to Figure 8 , the inner diameter of the water inlet part 112, as Figure 8 shown by d1 in Figure 8 , the inner diameter of the water outlet part 113, as Figure 8 shown by d2 in

[0066] Exemplarily, the inner diameter d1 of the water inlet part 112 takes values including but not limited to 9.0 mm, 9.5 mm, 10 mm, 10.5 mm, 11.0 mm, 11.5 mm, 12.0 mm, 12.5 mm, 13.0 mm, 13.5 mm, 14.0 mm, 14.5 mm or 15.0 mm. Similarly, the inner diameter d2 of the water outlet part 113 takes values including but not limited to 9.0 mm, 9.5 mm, 10 mm, 10.5 mm, 11.0 mm, 11.5 mm, 12.0 mm, 12.5 mm, 13.0 mm, 13.5 mm, 14.0 mm, 14.5 mm or 15.0 mm. The inner diameter d3 of the bypass pipe 200 takes values including but not limited to 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm or 5.0 mm.

[0067] In one embodiment, to simplify the structure of the valve seat 10, the base 100 and the bypass pipe 200 are integrally formed; in other embodiments, the base 100 and the bypass pipe 200 can also be fixedly welded.

[0068] The present utility model also provides a control valve 1, which includes a valve core 11 and a valve seat 10. The valve core 11 is arranged on the valve seat 10, and the valve core 11 is used to control the flow channel 102 for reversing the flow. The specific structure of the valve seat 10 refers to the above embodiments. Since this control valve 1 adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein one by one. Among them, the type of the control valve 1 can be a solenoid valve, an electric valve, a hydraulic valve or a pneumatic valve, etc.

[0069] Among them, the base 100 has an installation opening 107, and the base 100 is provided with an installation part 140 at the installation opening 107. The installation part 140 is used to install the valve core 11, and the valve core 11 is used to control the water flow rate of the flow channel 102 for reversing the flow. The installation part 140 and the valve core 11 are usually connected by threads to ensure the stability of the connection between the valve core 11 and the valve seat 10. Of course, the valve core 11 and the valve seat 10 can also adopt other detachable connection methods.

[0070] Exemplarily, the valve core 11 includes a valve body and a control part. The valve body is provided with a connecting part adapted to be installed with the installation part 140. Among them, it is possible that both the installation part 140 and the connecting part are provided with installation through holes, and the valve body and the valve seat 10 are connected together by a threaded connecting piece passing through the installation through holes. The control part can move along the axial direction of the valve body, so that the commutation flow channel has a connected or shut-off state, that is to say, to realize the switching between the presence and absence of flow in the commutation flow channel. In other embodiments, the control part can be to control the opening degree of the valve between the commutation flow channel and the main flow channel, so as to adjust by controlling the size of the flow cross-section and realize the adjustment of the flow rate (for example, realize the switching between flow rate gears such as large flow rate, medium flow rate, small flow rate, no flow rate, etc.).

[0071] In the water heater 1000, in order to facilitate the rapid adjustment of the water temperature of the outlet water, it is usually necessary to add a bypass branch between the water inlet pipe 31 and the water outlet pipe 32. An electromagnetic valve for controlling the on or off of the bypass branch is arranged on the bypass branch. When the water temperature of the water outlet pipe 32 is too high, the bypass branch is in a through state, so that cold water can be introduced from the water inlet pipe 31 through the bypass branch, and thus the water temperature can be quickly adjusted to the temperature required by the user. However, in the above solution, at least four welding points are required between the valve seat 10 of the bypass branch and the water inlet pipe 31, and between the valve seat 10 of the bypass branch and the water outlet pipe 32. There are more welding parts, and the assembly process is relatively complicated.

[0072] The present utility model also proposes a water heater 1000, which includes a water circuit assembly 3 and the control valve 1 described in the foregoing embodiments. The control valve 1 includes a valve core 11 and a valve seat 10. The specific structure of the valve seat 10 refers to the above embodiments. Since this control valve 1 adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail here one by one.

[0073] Among them, the water circuit assembly 3 includes a water inlet pipe 31 and a water outlet pipe 32; in a preferred embodiment, the base 100 is installed on the water inlet pipe 31, and the main flow channel 101 is communicated with the water inlet pipe 31; the bypass water outlet 201 is communicated with the water outlet pipe 32. Among them, the water temperature of the water inlet pipe 31 is usually relatively low, and the temperature of the water outlet pipe 32 is relatively high. In this embodiment, by arranging the valve seat 10 on the water inlet pipe 31, the temperature of the environment where it is located is relatively low, and the control valve 1 is not easily aged, thereby improving the service life of the control valve 1. Of course, in another embodiment, the base 100 is installed on the water outlet pipe 32, the main flow channel 101 is communicated with the water outlet pipe 32; the bypass water outlet 201 is communicated with the water inlet pipe 31.

[0074] It should be understood that the water heater 1000 involved in the present utility model includes, but is not limited to, gas water heaters 1000, electric water heaters 1000, solar water heaters 1000, and air energy water heaters 1000. As long as a water heater 1000 that requires bypass mixing water is used, the technical solution of the present utility model can be applied. For the convenience of description, a gas water heater 1000 is a device that converts gaseous fuels such as natural gas and liquefied petroleum gas into heat energy. Hereinafter, the gas water heater will be taken as an example for elaboration.

[0075] Exemplarily, please refer to Figures 1 to 5 and Figure 8 and Figure 11 . The gas water heater 1000 includes a water heater main body 2, a water circuit assembly 3, and a control valve 1. The main components of the water heater main body 2 include a housing and a burner, a heat exchanger, a hot water output device, a safety device, a control panel, etc. provided in the housing. Among them, the housing serves as a support and protection component and a carrier for mounting other components. During actual use, it is installed and connected to a wall or the like. The burner is responsible for burning the gaseous fuel and generating a high-temperature flame. The heat exchanger is used to transfer the heat generated by combustion to cold water to achieve the purpose of preparing hot water. The hot water output device is used to send the heated liquid water to the position of the user, such as a shower head, a bathtub, etc. Safety devices such as oxygen sensors, pressure controllers, temperature sensors, etc. are used to monitor and protect the system from problems such as overload, leakage, explosion, etc. The control panel is used to control the operation and settings of the device. Of course, in some other embodiments, the gas water heater 1000 may also include other auxiliary components, such as a water filter, a cleaning valve, etc., to ensure the reliability and safety of the device.

[0076] In this embodiment, in order to enable the gas water heater 1000 to have a bypass mixing function, the technical solution of the present utility model adopts a control valve 1 with a bypass pipe 200. The bypass pipe 200 is arranged between the water inlet pipe 31 and the water outlet pipe 32. The control valve 1 for controlling the connection and disconnection of the bypass branch is installed on the water inlet pipe 31, or the control valve 1 for controlling the connection and disconnection of the bypass branch is installed on the water outlet pipe 32. A main flow channel 101 and a reversing flow channel 102 are formed inside the valve seat 10. When the control valve 1 is arranged on the water inlet pipe 31, the main flow channel 101 of the valve seat 10 is communicated with the water inlet pipe 31. When the control valve 1 is arranged on the water outlet pipe 32, the main flow channel 101 of the valve seat 10 is communicated with the water inlet pipe 31. Among them, the valve core 11 is used to control the water flow rate passing through the reversing flow channel 102 of the valve seat 10. Specifically, it can be to control the on-off of the reversing flow channel 102 of the valve seat 10 through the valve core 11 to realize the switching between having flow and no flow; it can also be to adjust the cross-sectional area of the flow passage of the reversing flow channel 102 of the valve seat 10 through the valve core 11 (such as a proportional valve) to realize the adjustment of the flow rate (such as realizing the switching between flow rate gears such as large flow rate, medium flow rate, small flow rate, and no flow rate). The valve core 11 of the control valve 1 is electrically connected to the control system of the gas water heater 1000. The control system issues corresponding control instructions to the valve core 11 according to the working state of the water heater 1000. Furthermore, the water flow rate passing through the reversing flow channel 102 can be controlled through the valve core 11, so that the bypass mixing water volume of the water heater 1000 can be adjusted according to the actual working conditions to meet different application scenarios, and thus effectively improve the problems existing in the traditional gas water heater 1000, such as the start-stop constant temperature difference, high vaporization noise, and low thermal efficiency.

[0077] The above are only optional embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural transformations made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present utility model.

Claims

1. A valve seat, characterized in that: include: A base having a water inlet port, a water outlet port and a bypass port, wherein a main flow channel connecting the water inlet port with the water outlet port and a reversing flow channel connecting the main flow channel with the bypass port are formed in the base; as well as A bypass pipe, one end of which is connected to the bypass port and the other end of which is provided with a bypass water outlet connected to the bypass port; The base comprises a main body and a reversing pipe body arranged in the main body; the main body forms the main flow channel, the reversing pipe forms the reversing flow channel, the main body is provided with the water inlet port, the water outlet port and the bypass port, one end of the reversing pipe body is connected to the bypass port, and the other end of the reversing pipe body is connected to the main flow channel; The reversing flow channel comprises a first flow channel and a second flow channel, one end of the first flow channel is communicated with the main flow channel, and the other end of the first flow channel is communicated with the bypass port via the second flow channel.

2. The valve seat according to claim 1, characterized in that The main pipe body includes a main part, and a water inlet part and a water outlet part respectively arranged on both sides of the main part, the main part has an inner cavity and the bypass port, the reversing pipe body is arranged in the inner cavity, the water inlet part has the water inlet port and the water inlet channel, the water outlet part has the water outlet port and the water outlet channel, the water inlet channel, the inner cavity and the water outlet channel are connected in sequence to form the main channel.

3. The valve seat according to claim 1, characterized in that A flow cross-sectional area of ​​the first flow channel is greater than a flow cross-sectional area of ​​the second flow channel.

4. The valve seat according to claim 3, characterized in that A first limiting flange is provided on the inner circumferential surface of the reversing tube body, and the first limiting flange is located between the first flow channel and the second flow channel. The first limiting flange has a flow port that connects the first flow channel with the second flow channel, and one end of the bypass pipe is inserted into the second flow channel and can abut against the first limiting flange.

5. The valve seat according to claim 3, characterized in that One end of the second flow channel close to the bypass port is gradually expanded.

6. The valve seat according to claim 2, characterized in that The inner diameter of the water inlet is not less than 9.0 mm and not more than 15.0 mm; and / or, the inner diameter of the water outlet is not less than 9.0 mm and not more than 15.0 mm; And / or, the inner diameter of the bypass pipe is not less than 2.5 mm and not more than 5.0 mm.

7. The valve seat according to claim 1, characterized in that The axis of the main pipe body is arranged perpendicularly to the axis of the reversing pipe body.

8. The valve seat according to claim 1, characterized in that The base and the bypass pipe are integrally formed; or, the base and the bypass pipe body are fixed by welding.

9. The valve seat according to claim 1, characterized in that A second limiting flange is provided on the circumferential side of the bypass pipe, and the second limiting flange is located at one end of the bypass pipe close to the bypass water outlet.

10. A control valve, characterized in that: include: The valve seat according to any one of claims 1 to 9; as well as A valve core is arranged on the valve seat, and the valve core is used to control the water flow rate of the reversing flow channel.

11. A water heater, characterized in that: include: A water channel assembly, the water channel assembly comprising a water inlet pipe and a water outlet pipe; as well as The control valve according to claim 10, wherein the base is mounted on the water inlet pipe, the main flow channel is connected to the water inlet pipe, and the bypass outlet is connected to the water outlet pipe; Alternatively, the base is installed on the water outlet pipe, the main channel is connected to the water outlet pipe; and the bypass water outlet is connected to the water inlet pipe.

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