Water heater

Abstract

The utility model discloses a water heater, and relates to the technical field of water heaters, the water heater comprises a shell, a water heater main body, a waterway assembly and a control valve, the shell comprises a bottom shell and a surface cover which are detachably connected; the water heater main body is arranged in the shell, and the water heater main body is provided with a heat exchange channel; the water path assembly is arranged in the shell and comprises a water inlet pipeline, a water outlet pipeline and a bypass branch, and the water inlet pipeline and the water outlet pipeline communicate with the heat exchange channel; the bypass branch is used for bypass communication of the water inlet pipeline and the water outlet pipeline; the control valve is detachably arranged on the side, facing the surface cover, of the water path assembly, and the control valve is used for controlling the water passing flow of the bypass branch. According to the technical scheme, the control valve is detachably arranged on the side, facing the face cover, of the water way assembly, and therefore in the actual maintenance process, a user can directly maintain the control valve by opening the face cover. The maintenance difficulty of the control valve is reduced, and meanwhile the control valve is convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to 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 water inlet pipe and the water outlet pipe, and the bypass branch is provided with a solenoid valve that controls the bypass branch to be on or off. When the water temperature of the outlet pipe is too high, the bypass branch can be switched to a passage state through the solenoid valve, so that cold water can be introduced from the water inlet pipe through the bypass branch, so that the water temperature can be quickly adjusted to the temperature required by the user. However, in the above scheme, since the length direction of the control valve is consistent with the extension direction of the water inlet pipe or the water outlet pipe. Since the space left for the water circuit components of the water heater is limited, such a setting makes it difficult to disassemble and assemble the bypass branch and its control valve, and it is difficult to maintain later. Utility Model Content

[0003] The main purpose of the utility model is to provide a water heater, aiming to solve the problems of difficulty in disassembly and assembly of a bypass branch and a control valve thereof, and difficulty in subsequent maintenance.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a water heater, which comprises:

[0005] A housing, the housing comprising a detachably connected bottom shell and a surface cover;

[0006] A water heater body is disposed in the shell, and the water heater body has a heat exchange channel;

[0007] a water circuit assembly, disposed in the housing, the water circuit assembly comprising a water inlet pipe, a water outlet pipe and a bypass branch, the water inlet pipe and the water outlet pipe are respectively connected to the heat exchange channel; the bypass branch is used to bypass the water inlet pipe and the water outlet pipe; and

[0008] A control valve is detachably arranged on a side of the water channel assembly facing the surface cover, and the control valve is used to control the water flow rate of the bypass branch.

[0009] In one embodiment, the control valve includes a valve seat and a control component arranged on the valve seat; the valve seat is installed on the water circuit assembly, and the control component is detachably installed on the valve seat. The control component is located on the side of the valve seat facing the face cover, and the control component is used to control the water flow rate of the bypass branch.

[0010] In one embodiment, the control component is connected to the valve seat via a fastener.

[0011] In one embodiment, the valve seat has a mounting portion, the mounting portion is provided with a first mounting hole, the control component is provided with a second mounting hole at a position corresponding to the first mounting hole, and the fastener passes through the first mounting hole and the second mounting hole and fixes the control component to the valve seat.

[0012] In one embodiment, the control valve further comprises a bypass pipe connected to the valve seat, the valve seat has an inner cavity, and the bypass pipe forms the bypass branch;

[0013] The valve seat is installed on the water inlet pipeline, the inner cavity is connected to the water inlet pipeline, one end of the bypass pipe is connected to the inner cavity, and the other end is connected to the water outlet pipeline;

[0014] Alternatively, the valve seat is installed on the water outlet pipeline, the inner cavity is connected to the water outlet pipeline, one end of the bypass pipe is connected to the inner cavity, and the other end is connected to the water inlet pipeline.

[0015] In one embodiment, the surface cover has a panel opposite to the bottom shell in a first direction, and the water inlet pipe and the water outlet pipe are arranged side by side along the first direction;

[0016] The water inlet pipeline is located on a side of the water outlet pipeline close to the panel, and the valve seat is installed on the water inlet pipeline;

[0017] Alternatively, the water outlet pipeline is located at a side of the water inlet pipeline close to the panel, and the valve seat is installed on the water outlet pipeline.

[0018] In one embodiment, the control component is disposed on a side of the valve seat facing the panel.

[0019] In one embodiment, the bottom shell has a side opening opposite to the water channel assembly in a second direction, the face cover also has a side plate covering the side opening, and the control component is arranged on a side of the valve seat facing the side plate, wherein the first direction intersects with the second direction.

[0020] In one embodiment, the face cover has a panel arranged opposite to the bottom shell in a first direction, the water inlet pipe and the water outlet pipe are arranged side by side on the same side of the water heater body along a second direction, the valve seat is arranged on the water inlet pipe or the water outlet pipe, and the control component is arranged on the side of the valve seat facing the panel; wherein the first direction intersects with the second direction.

[0021] In one embodiment, the pipeline in the water circuit assembly for installing the valve seat is configured with a cavity facing the face cover, and the control component is at least partially accommodated in the cavity.

[0022] The technical solution of the utility model is to detachably arrange the control valve on the side of the water channel assembly facing the cover, so that during the actual maintenance process, the user can directly repair the control valve by opening the cover, which reduces the difficulty of control valve maintenance and facilitates the installation of the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of an embodiment of a water heater provided by the utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the water heater after the cover is removed;

[0026] Figure 3 for Figure 2 A side view of

[0027] Figure 4 for Figure 2 Another side view of;

[0028] Figure 5 for Figure 2 Schematic diagram of the installation structure of the heat exchanger and water circuit components;

[0029] Figure 6 for Figure 5 Exploded view of the control valve.

[0030] Description of Figure Numbers:

[0031] 10. Water heater;

[0032] 100, housing; 110, bottom housing; 111, side opening; 120, cover; 121, panel; 122, side panel;

[0033] 200, water heater body; 210, heat exchanger;

[0034] 300, water circuit assembly; 310, water inlet pipeline; 311, first section pipeline; 312, second section pipeline; 313, third section pipeline; 320, water outlet pipeline; 330, bypass branch; 301, concave cavity;

[0035] 400, control valve; 410, valve seat; 411, inner cavity; 412, mounting portion; 413, first mounting hole; 420, control component; 421, second mounting hole; 430, bypass pipe; 440, fastener.

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] 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 water inlet pipe and the water outlet pipe, and the bypass branch is provided with a solenoid valve that controls the bypass branch to be on or off. When the water temperature of the outlet pipe is too high, the bypass branch can be switched to a passage state through the solenoid valve, so that cold water can be introduced from the water inlet pipe through the bypass branch, so that the water temperature can be quickly adjusted to the temperature required by the user. However, in the above scheme, the water inlet pipe and the water outlet pipe are usually arranged side by side along the width direction of the water heater, and the bypass branch and its control valve are arranged between the water inlet pipe and the water outlet pipe, and the length direction of the control valve is consistent with the extension direction of the water inlet pipe or the water outlet pipe. Since the space left for the water circuit components of the water heater is limited, such a setting makes it difficult to disassemble and assemble the bypass branch and its control valve, and the difficulty of later maintenance is great.

[0041] The utility model provides a water heater. It aims to solve the problem that the bypass branch and its control valve are difficult to disassemble and assemble, and the later maintenance is difficult. Figures 1 to 6 , solid arrows indicate spaces, slots, or holes.

[0042] See also Figures 1 to 6 In one embodiment of the utility model, the water heater 10 includes a shell 100, a main body of the water heater 10, a water circuit assembly 300 and a control valve 400, wherein the shell 100 includes a bottom shell 110 and a cover 120 that are detachably connected; the main body of the water heater 10 is arranged in the shell 100, and the main body of the water heater 10 has a heat exchange channel; the water circuit assembly 300 is arranged in the shell 100, and the water circuit assembly 300 includes an inlet pipe 310, an outlet pipe 320 and a bypass branch 330, and the inlet pipe 310 and the outlet pipe 320 are respectively connected to the heat exchange channel; the bypass branch 330 is used to bypass the inlet pipe 310 and the outlet pipe 320; the control valve 400 is detachably arranged on the side of the water circuit assembly 300 facing the cover 120, and the control valve 400 is used to control the water flow rate of the bypass branch 330.

[0043] Usually, the housing 100 is used as a support and protection component and as a carrier for installing other components. In actual use, the bottom shell 110 is usually used to connect with a building object such as a wall, so that the water heater 10 is installed in a position convenient for users to use. Of course, the bottom shell 110 can also be installed on other special assembly parts, for example, a mounting bracket specially used to install the water heater 10, which will not be illustrated one by one here. The water heater 10 body and the cover 120 are usually installed on the bottom shell 110. The water heater 10 body refers to the main component required for heating water. In different types of water heaters 10, the water heater 10 body corresponds to different types. The types of water heaters 10 include but are not limited to gas water heaters 10 and electric water heaters 10. For the convenience of description, the following takes the gas water heater 10 as an example for explanation.

[0044] The gas water heater 10 is a device that converts gas fuels such as natural gas and liquefied petroleum gas into thermal energy. The main components of the main body of the gas water heater 10 include a burner, a heat exchanger 210, a safety device, a control panel, etc. Among them, the control panel is usually arranged on the cover 120, and the burner, the heat exchanger 210 and the safety device are usually installed on the bottom shell 110. The burner is responsible for completely burning the natural gas or liquefied petroleum gas entering the water tank to generate a high-temperature flame for heating water. The heat exchanger 210, also known as a heat exchange tube, is the core part of the gas water heater 10. It consists of many slender tubes, and the interior is filled with channels through which water flows, that is, heat exchange channels. When the flame passes through the burner, the heat generated will be transferred to the water along these channels, thereby heating the water. As a protective device, the safety device will automatically open to release excessive pressure and water vapor when the pressure is too high or the temperature is too high. The main function of the control device is to ensure that the user can use the water heater 10 safely and conveniently, and at the same time, it can also ensure the performance and service life of the water heater 10.

[0045] Among them, the main function of the water circuit assembly 300 of the water heater 10 is to introduce the water source into the heat exchange channel for heating, and then transport the heated water out. Specifically, the water circuit assembly 300 includes a water inlet pipe 310 and a water outlet pipe 320. In actual use, the water inlet pipe 310 is used to introduce the water source into the heat exchange channel for heating, and the water outlet pipe 320 is used to transport the water heated by the water heater 10 out. In order to enable the gas water heater 10 to have a bypass water mixing function, the water circuit assembly 300 also includes a bypass branch 330, which is used to bypass the water inlet pipe 310 and the water outlet pipe 320. In addition, a control valve 400 is also provided, and the control valve 400 is used to control the water flow rate of the bypass branch 330.

[0046] Furthermore, the valve seat 410 of the control valve 400 is connected between the water inlet pipe and the water outlet pipe, and a bypass flow channel that connects the water inlet pipe and the water outlet pipe is formed inside the valve seat 410. The control component 420 is used to control the water flow through the bypass flow channel of the valve seat 410. Specifically, the control component 420, such as a solenoid valve, can be used to control the on-off of the bypass flow channel of the valve seat 410 to achieve switching between flow and no flow; or the control component 420, such as a proportional valve, can be used to adjust the flow cross-section size of the bypass flow channel of the valve seat 410 to achieve flow size adjustment. The flow size adjustment generally includes, for example, switching between flow gears such as large flow, medium flow, small flow, and no flow. The control component 420 of the control valve 400 is electrically connected to the control system of the gas water heater 10. The control system sends corresponding control instructions to the control component 420 according to the working state of the water heater 10, and then the water flow rate of the bypass flow channel can be controlled through the control component 420, so that the bypass mixed water volume of the water heater 10 can be adjusted according to the actual working conditions to meet different application scenarios, thereby effectively improving the problems of the traditional gas water heater 10 such as the start-stop constant temperature difference, high vaporization noise, and low thermal efficiency.

[0047] Furthermore, in order to facilitate the maintenance and installation of the control valve 400, the utility model detachably arranges the control valve 400 on the side of the water channel assembly 300 facing the cover 120. In this way, during the actual maintenance process, the user can directly repair the control valve 400 by opening the cover 120, which reduces the difficulty of repairing the control valve 400 and facilitates the installation of the control valve 400. Among them, the maintenance of the control valve 400 usually refers to checking whether it has a fault. After determining that a fault has occurred, the control component 420 of the control valve 400 is disassembled and replaced with another control component 420 that can work normally. The control component 420 is usually a solenoid valve or a proportional valve, etc. Of course, it is also possible to first disassemble the control part of the control valve 400 and then check whether it has a fault.

[0048] The technical solution of the utility model is to detachably arrange the control valve 400 on the side of the water channel assembly 300 facing the cover 120, so that during the actual maintenance process, the user can directly repair the control valve 400 by opening the cover 120. The difficulty of repairing the control valve 400 is reduced, and at the same time, the installation of the control valve 400 is also facilitated.

[0049] See also Figures 4 to 6In an exemplary embodiment, the control valve 400 includes a valve seat 410 and a control component 420 disposed on the valve seat 410; the valve seat 410 is installed on the water circuit assembly 300, and the control component 420 is detachably installed on the valve seat 410, and the control component 420 is located on the side of the valve seat 410 facing the face cover 120, and the control component 420 is used to control the water flow rate of the bypass branch 330.

[0050] Among them, the valve seat 410 is installed on the water circuit assembly 300, and the installation method of the valve seat 410 and the water circuit assembly 300 can be a detachable installation, such as a threaded connection, a clamp connection, etc., or a non-detachable connection, such as direct welding, or the valve seat 410 and the water circuit assembly 300 are directly integrally formed, etc. Preferably, the installation method of the valve seat 410 and the water circuit assembly 300 adopts a welding connection. The control component 420 can be a solenoid valve or a proportional valve. For example, in one embodiment, the control component 420 is a solenoid valve, and a normally closed solenoid valve can be specifically used. The solenoid valve is used to control the on-off of the bypass branch 330, so that the bypass flow channel can be switched between two gears with bypass flow and without bypass flow, and the adjustment is simple and convenient, and the response speed is fast. For example, in another embodiment, the control component 420 can adopt a proportional valve, and the proportional valve is equipped with a stepping motor to realize continuous stepless adjustment, and the adjustment accuracy is higher. It can not only realize the on-off control of the bypass flow channel, but also realize the flow size adjustment of the bypass flow channel.

[0051] Furthermore, the control component 420 is detachably connected to the valve seat 410, which may be specifically a clamp connection, a threaded connection, or a clamp connection, etc. In other words, the control component 420 is connected to the valve seat 410 via a fastener 440. The fastener 440 may be a threaded connector, a clamp, etc.

[0052] Furthermore, the valve seat 410 has a mounting portion 412, the mounting portion 412 is provided with a first mounting hole 413, the control component 420 is provided with a second mounting hole 421 at a position corresponding to the first mounting hole 413, and the fastener 440 passes through the first mounting hole 413 and the second mounting hole 421 and fixes the control component 420 to the valve seat 410. The valve seat 410 also has a mounting opening, the mounting portion 412 is provided at the mounting opening,

[0053] See also Figure 6In a preferred embodiment, in order to simplify the structure of the bypass branch 330, the control valve 400 also includes a bypass pipe 430 connected to the valve seat 410, the valve seat 410 has an inner cavity 411, and the bypass pipe 430 forms the bypass branch 330; the valve seat 410 is installed on the water inlet pipe 310, the inner cavity 411 is connected to the water inlet pipe 310, one end of the bypass pipe 430 is connected to the inner cavity 411, and the other end is connected to the water outlet pipe 320; or, the valve seat 410 is installed on the water outlet pipe 320, the inner cavity 411 is connected to the water outlet pipe 320, one end of the bypass pipe 430 is connected to the inner cavity 411, and the other end is connected to the water inlet pipe 310. Thus, by directly setting the control valve 400 on the water inlet pipe 310 or the water outlet pipe 320, the bypass branch 330 can be directly realized with only one pipe, so that the length of the bypass branch 330 can be shortened as much as possible, thereby making the structure of the water circuit assembly 300 more compact. Preferably, the control valve 400 is installed on the water inlet pipe 310, so that the temperature of the environment where the control valve 400 is located is relatively low, which can increase the service life of the control component 420.

[0054] See also Figures 1 to 4 In another preferred embodiment, the cover 120 has a panel 121 opposite to the bottom shell 110 in the first direction. In some embodiments, the cover 120 generally further includes a side plate 122 connected to the panel 121. In order to reduce the space occupied by the water circuit assembly 300 in the width direction of the water heater 10, the water inlet pipe 310 and the water outlet pipe 320 are arranged side by side along the first direction; the water inlet pipe 310 is located on the side of the water outlet pipe 320 close to the panel 121, and the valve seat 410 is installed on the water inlet pipe 310; or, the water outlet pipe 320 is located on the side of the water inlet pipe 310 close to the panel 121, and the valve seat 410 is installed on the water outlet pipe 320. In this way, this embodiment reduces the space occupied by the water circuit assembly 300 in the width direction of the water heater 10 by arranging the water inlet pipe 310 and the water outlet pipe 320 side by side on one side of the water heater 10 body.

[0055] It should be noted that the first direction is Figure 1 As shown, the first direction may refer to a direction extending along the width direction of the water heater housing 100. The water inlet pipe 310 and the water outlet pipe 320 are arranged side by side along the first direction, and the water inlet pipe 310 may be arranged close to the panel 121, or the water outlet pipe 320 may be arranged close to the panel 121.

[0056] It is understandable that, in addition to the panel 121 of the gas water heater 10 enclosing the installation space together with the bottom shell 110, the control panel or control button of the water heater 10 is usually installed on the panel 121. Some common components on the panel 121 include a water inlet switch valve, an ignition switch valve, a temperature selection knob, a timer, and a power-off protection device, etc. The water inlet switch valve is arranged on the water inlet pipeline 310 to control the water flow and water pressure entering the water tank; the ignition switch valve: controls the natural gas flow entering the combustion chamber; the temperature selection knob is used to set the range of water temperature, generally selecting between multiple levels, such as 40 degrees, 50 degrees, 60 degrees, etc.; the timer is used to set the interval between the heating time and the rest time, generally selecting from multiple time periods, such as 30 minutes, 45 minutes, 90 minutes, etc.; the power-off protection device is used to automatically cut off the fuel supply to ensure safety when abnormal conditions (such as too low water level, too high pressure, too high temperature, unstable flame, etc.) are detected.

[0057] In addition to the above, the panel 121 of the gas water heater 10 may also include some additional functions, such as energy-saving mode, water volume sensing, automatic shutdown, fault prompt, etc. The user can perform corresponding settings and operations through the buttons or display screen on the panel 121. In some embodiments, a fault self-detection device for the control valve 400 can also be set. When the control component 420 of the control valve 400 fails, a fault prompt can be directly made on the panel 121, and the user can directly open the cover 120 to repair the control component 420.

[0058] On the basis of the previous embodiment, in order to facilitate the removal of the control component 420 of the control valve 400 from the front, the control component 420 is arranged on the side of the valve seat 410 facing the panel 121. Usually, the bottom shell 110 has a side opening 111 opposite to the water channel assembly 300 in the second direction. In this way, by arranging the control component 420 on the side of the valve seat 410 facing the panel 121, the user can see the control component 420 by opening the cover 120. Since the other side of the control component 420 is not blocked by other components, it is also convenient for the user to remove the control component 420 for maintenance.

[0059] In another preferred embodiment, in order to facilitate the removal of the control component 420 of the control valve 400 from the side of the water heater 10, the bottom shell 110 has a side opening 111 opposite to the water channel assembly 300 in the second direction, and the face cover 120 also has a side plate 122 covering the side opening 111, and the control component 420 is arranged on the side of the valve seat 410 facing the side plate 122, wherein the first direction intersects with the second direction.

[0060] It is understood that, with respect to the first direction and the second direction, reference may be made to Figure 1 The front and side surfaces described in the above embodiments are relative and are based on the existing square-shaped housing 100. The front and side surfaces are usually adjacent side surfaces.

[0061] In one embodiment, the cover 120 has a panel 121 arranged opposite to the bottom shell 110 in a first direction, the water inlet pipe 310 and the water outlet pipe 320 are arranged side by side on the same side of the water heater 10 body along a second direction, the valve seat 410 is arranged on the water inlet pipe 310 or the water outlet pipe 320, and the control component 420 is arranged on the side of the valve seat 410 facing the panel 121; wherein the first direction intersects with the second direction. For the first direction and the second direction, please refer to Figure 1 direction indication.

[0062] Among them, the water inlet pipe 310 and the water outlet pipe 320 are arranged side by side along the second direction on the same side of the water heater 10 body. It can be understood that the water inlet pipe 310 and the water outlet pipe 320 are set facing the panel 121 at the same time, wherein the water inlet pipe 310 can be close to the side plate 122 of the cover 120, or the water outlet pipe 320 can be close to the side plate 122 of the cover 120.

[0063] See also Figure 3 and Figure 5 In a preferred embodiment, the concave cavity 301 facing the cover 120 is constructed in the water circuit assembly 300 for installing the valve seat 410, and the control component 420 is at least partially accommodated in the concave cavity 301. In this way, by constructing the concave cavity 301 facing the cover 120 in the pipeline for installing the valve seat 410, on the one hand, the distance between the hot and cold water pipes can be closer, and the length of the bypass pipe 430 can be reduced. On the other hand, in some embodiments, that is, when the depth of the concave cavity 301 is large enough, the outer side of the control component 420 of the control valve 400 will not protrude from the outer edge of the heat exchanger 210, and it is not easy to be bumped during transportation and turnover, resulting in damage to the solenoid valve.

[0064] The concave cavity 301 may be constructed by bending a pipeline for installing the valve seat 410. The pipeline for installing the valve seat 410 may be an inlet pipeline 310 or an outlet pipeline 320, which is not specifically limited here.

[0065] Please continue reading Figure 3 and Figure 5In an exemplary embodiment, the water inlet pipe 310 is disposed on a side of the water outlet pipe 320 close to the cover 120, and the valve seat 410 is disposed on the water inlet pipe 310. That is, the valve seat 410 is installed on the water inlet pipe 310, and the middle portion of the water inlet pipe 310 is bent toward one side of the water outlet pipe 320, thereby forming the concave cavity 301.

[0066] Specifically, the water inlet pipeline 310 includes a first section of pipeline 311 and a second section of pipeline 312 adjacent to each other, and the first section of pipeline 311 and the second section of pipeline 312 are connected and arranged in a bent manner; the distance between the water inlet pipeline 310 and the water outlet pipeline 320 at the first section of pipeline 311 is smaller than the distance between them at the second section of pipeline 312; and the valve seat 410 is arranged at the first section of pipeline 311. Preferably, the distance between the water inlet pipeline 310 and the water outlet pipeline 320 at the first section of pipeline 311 is the minimum distance between the water inlet pipeline 310 and the water outlet pipeline 320. In other embodiments, the water inlet pipeline 310 and the water outlet pipeline 320 may be arranged in parallel at the first section of pipeline 311.

[0067] In some embodiments, the water inlet pipeline 310 also includes a third section 313 of the pipeline. The first section 311, the second section 312 and the third section 313 of the pipeline are bent in sequence. The third section 313 of the pipeline is connected to the heat exchanger 210 and communicates with the heat exchange channel of the heat exchanger 210.

[0068] In another embodiment, the water outlet pipe 320 is disposed on a side of the water inlet pipe 310 close to the cover 120, and the valve seat 410 is disposed on the water outlet pipe 320. In other words, the valve seat 410 is installed on the water outlet pipe 320, and the middle portion of the water outlet pipe 320 is bent toward one side of the water inlet pipe 310, thereby forming the concave cavity 301.

[0069] Specifically, the outlet pipe 320 includes a fourth pipe section and a fifth pipe section adjacent to each other, and the fourth pipe section and the fifth pipe section are connected in a bent manner; the distance between the outlet pipe 320 and the inlet pipe 310 at the fourth pipe section is smaller than the distance between the outlet pipe 320 and the inlet pipe 310 at the fifth pipe section; and the valve seat 410 is disposed at the fourth pipe section. Preferably, the distance between the outlet pipe 320 and the inlet pipe 310 at the fourth pipe section is the minimum distance between the inlet pipe 310 and the outlet pipe 320. In other embodiments, the inlet pipe 310 and the outlet pipe 320 may be disposed in parallel at the fourth pipe section.

[0070] In some embodiments, the water outlet pipeline 320 also includes a sixth section of the pipeline, the fourth section of the pipeline, the fifth section of the pipeline and the sixth section of the pipeline are bent in sequence, and the sixth section of the pipeline is connected to the heat exchanger 210 and communicates with the heat exchange channel of the heat exchanger 210.

[0071] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water heater, characterized in that: include: A housing, the housing comprising a detachably connected bottom shell and a surface cover; A water heater body is disposed in the shell, and the water heater body has a heat exchange channel; A water circuit assembly is disposed in the housing, the water circuit assembly comprises a water inlet pipe, a water outlet pipe and a bypass branch, the water inlet pipe and the water outlet pipe are respectively connected to the heat exchange channel; the bypass branch is used to bypass the water inlet pipe and the water outlet pipe; as well as A control valve is detachably arranged on a side of the water channel assembly facing the surface cover, and the control valve is used to control the water flow rate of the bypass branch.

2. The water heater according to claim 1, characterized in that: The control valve includes a valve seat and a control component arranged on the valve seat; the valve seat is installed on the water channel assembly, and the control component is detachably installed on the valve seat. The control component is located on the side of the valve seat facing the face cover, and the control component is used to control the water flow rate of the bypass branch.

3. The water heater according to claim 2, characterized in that: The control component is connected to the valve seat via a fastener.

4. The water heater according to claim 3, characterized in that: The valve seat has a mounting portion, the mounting portion is provided with a first mounting hole, the control component is provided with a second mounting hole at a position corresponding to the first mounting hole, and the fastener passes through the first mounting hole and the second mounting hole and fixes the control component to the valve seat.

5. The water heater according to claim 2, characterized in that: The control valve further comprises a bypass pipe connected to the valve seat, the valve seat has an inner cavity, and the bypass pipe forms the bypass branch; The valve seat is installed on the water inlet pipeline, the inner cavity is connected to the water inlet pipeline, one end of the bypass pipe is connected to the inner cavity, and the other end is connected to the water outlet pipeline; Alternatively, the valve seat is installed on the water outlet pipeline, the inner cavity is connected to the water outlet pipeline, one end of the bypass pipe is connected to the inner cavity, and the other end is connected to the water inlet pipeline.

6. The water heater according to claim 2, characterized in that: The surface cover has a panel opposite to the bottom shell in a first direction, and the water inlet pipe and the water outlet pipe are arranged side by side along the first direction; The water inlet pipeline is located on a side of the water outlet pipeline close to the panel, and the valve seat is installed on the water inlet pipeline; Alternatively, the water outlet pipeline is located at a side of the water inlet pipeline close to the panel, and the valve seat is installed on the water outlet pipeline.

7. The water heater according to claim 6, characterized in that The control component is arranged on a side of the valve seat facing the panel.

8. The water heater according to claim 6, characterized in that: The bottom shell has a side opening opposite to the water channel assembly in a second direction, the surface cover also has a side plate covering the side opening, and the control component is arranged on a side of the valve seat facing the side plate, wherein the first direction intersects with the second direction.

9. The water heater according to claim 2, characterized in that: The face cover has a panel arranged opposite to the bottom shell in a first direction, the water inlet pipe and the water outlet pipe are arranged side by side on the same side of the water heater body along a second direction, the valve seat is arranged on the water inlet pipe or the water outlet pipe, and the control component is arranged on the side of the valve seat facing the panel; wherein the first direction intersects with the second direction.

10. The water heater according to any one of claims 2 to 9, characterized in that: The pipeline in the water circuit assembly for installing the valve seat forms a concave cavity facing the face cover, and the control component is at least partially accommodated in the concave cavity.

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