Water heater

Abstract

The invention 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 present invention relates to the technical field of water heaters, and in particular to a water heater. Background Art

[0002] In order to facilitate the rapid adjustment of the outlet water temperature in a water heater, it is usually necessary to add a bypass branch between the water inlet pipe and the water outlet pipe. The bypass branch is provided with a solenoid valve that controls the bypass branch to be on or off. When the water temperature in the outlet pipe is too high, the solenoid valve can switch the bypass branch to a passage state, so that cold water can be introduced from the water inlet pipe through the bypass branch, thereby quickly adjusting the water temperature to the temperature required by the user. However, in the above solution, since the length direction of the control valve is consistent with the extension direction of the water inlet pipe or the water outlet pipe, and since the space left for the water circuit components in the water heater is limited, this arrangement makes it difficult to disassemble and assemble the bypass branch and its control valve, and makes subsequent maintenance difficult. Summary of the Invention

[0003] The main purpose of the present invention is to provide a water heater, which aims to solve the problems of difficulty in disassembly and assembly of a bypass branch and its control valve, and difficulty in subsequent maintenance.

[0004] To achieve the above-mentioned object, the present invention provides a water heater, which comprises:

[0005] A 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 channel assembly disposed in the housing, the water channel assembly comprising a water inlet pipe, a water outlet pipe, and a bypass branch, the water inlet pipe and the water outlet pipe being respectively connected to the heat exchange channel; the bypass branch being 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 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.

[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 pipe, the inner cavity is connected to the water inlet pipe, one end of the bypass pipe is connected to the inner cavity, and the other end is connected to the water outlet pipe;

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

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

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

[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 surface cover also has a side plate covering the side opening, and the control component is arranged on the 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, a pipeline in the water circuit assembly for installing the valve seat is configured to form a cavity facing the face cover, and the control component is at least partially accommodated in the cavity.

[0022] The technical solution of the present invention is to detachably install the control valve on the side of the water channel assembly facing the cover. In this way, during actual maintenance, the user can directly repair the control valve by opening the cover. This reduces the difficulty of control valve maintenance and also facilitates the installation of the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0028] Figure 5 for Figure 2 Schematic diagram of the installation structure of the heat exchanger and water channel 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 pipe; 311, first section of pipe; 312, second section of pipe; 313, third section; 320, water outlet pipe; 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 purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under 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 present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such 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 mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] In a water heater, in order to facilitate the rapid adjustment of the outlet water temperature, 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 solenoid valve can switch the bypass branch to a passage state, 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 an arrangement makes it difficult to disassemble and assemble the bypass branch and its control valve, and makes subsequent maintenance difficult.

[0041] The present invention proposes a water heater. It aims to solve the problem of difficult disassembly and assembly of the bypass branch and its control valve, and the difficulty of subsequent maintenance. Figures 1 to 6 , solid arrows indicate spaces, slots, or holes.

[0042] See also Figures 1 to 6 In one embodiment of the present invention, 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 detachably connected bottom shell 110 and a cover 120; 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 a water inlet pipe 310, a water outlet pipe 320 and a bypass branch 330, wherein the water inlet pipe 310 and the water outlet pipe 320 are respectively connected to the heat exchange channel; the bypass branch 330 is used to bypass the water inlet pipe 310 and the water 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] Typically, the housing 100 serves as a supporting and protective component and as a carrier for mounting other components. In actual use, the bottom shell 110 is typically used to connect to a building structure such as a wall, thereby mounting the water heater 10 in a location convenient for the user. Of course, the bottom shell 110 can also be used to mount other specialized components, such as a mounting bracket specifically for mounting the water heater 10, which will not be described one by one here. The water heater 10 body and the cover 120 are typically mounted on the bottom shell 110. The water heater 10 body refers to the main component required for heating water. Different types of water heaters 10 have different corresponding water heater 10 bodies. The types of water heaters 10 include, but are not limited to, gas water heaters 10 and electric water heaters 10. For ease of description, the following explanation will be given using a gas water heater 10 as an example.

[0044] The gas water heater 10 is a device that converts gaseous fuels such as natural gas and liquefied petroleum gas (LPG) into thermal energy. The main components of the gas water heater 10 include a burner, a heat exchanger 210, safety devices, and a control panel. The control panel is typically located on the cover 120, while the burner, heat exchanger 210, and safety devices are typically mounted on the bottom casing 110. The burner is responsible for completely burning the natural gas or liquefied petroleum gas entering the water tank, generating a high-temperature flame that heats the water. The heat exchanger 210, also known as the heat exchange tube, is the core component of the gas water heater 10. It consists of many long, narrow tubes filled with channels for water flow, known as heat exchange channels. When the flame passes through the burner, the heat generated is transferred along these channels to the water, heating it. The safety device acts as a protective device, automatically opening to release excess pressure and water vapor when pressure or temperature are too high. The primary function of the control device is to ensure safe and convenient use of the water heater 10 while also guaranteeing its performance and service life.

[0045] The main function of the water circuit assembly 300 of the water heater 10 is to introduce water into the heat exchange channel for heating and then transport the heated water out. Specifically, the water circuit assembly 300 includes an inlet pipe 310 and an outlet pipe 320. In actual use, the inlet pipe 310 is used to introduce water into the heat exchange channel for heating, and the 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 mixing function, the water circuit assembly 300 also includes a bypass branch 330, which is used to bypass the inlet pipe 310 and the outlet pipe 320. In addition, a control valve 400 is provided, which 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 is formed inside the valve seat 410 to connect the water inlet pipe and the water outlet pipe. 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. Alternatively, the control component 420, such as a proportional valve, can be used to adjust the flow cross-section of the bypass flow channel of the valve seat 410 to achieve flow adjustment. The flow adjustment generally includes, for example, switching between flow ranges such as high flow, medium flow, low 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 status 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, to facilitate the maintenance and installation of the control valve 400, the present invention detachably mounts the control valve 400 on the side of the waterway assembly 300 facing the cover 120. Thus, during actual maintenance, the user can directly repair the control valve 400 by opening the cover 120, thereby reducing the difficulty of repairing the control valve 400 and facilitating the installation of the control valve 400. Repairing the control valve 400 typically involves inspecting it for malfunctions. Once a malfunction is confirmed, the control component 420 of the control valve 400 is removed and replaced with another functioning control component 420, typically a solenoid valve or a proportional valve. Alternatively, the control portion of the control valve 400 can be removed first and then inspected for malfunctions.

[0048] The technical solution of the present invention detachably mounts the control valve 400 on the side of the waterway assembly 300 facing the cover 120. Thus, during actual maintenance, the user can directly access the control valve 400 by simply opening the cover 120. This reduces the difficulty of maintaining the control valve 400 and facilitates its installation.

[0049] See also Figures 4 to 6In an exemplary embodiment, the control valve 400 includes a valve seat 410 and a control component 420 provided on the valve seat 410; the valve seat 410 is installed on the water channel assembly 300, and the control component 420 is detachably installed on the valve seat 410. 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] The valve seat 410 is mounted on the waterway assembly 300. The valve seat 410 and the waterway assembly 300 can be mounted in a removable manner, such as by threaded connection or clamp connection, or in a non-removable manner, such as by direct welding, or the valve seat 410 and the waterway assembly 300 can be integrally formed. Preferably, the valve seat 410 and the waterway assembly 300 are mounted by welding. 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, specifically a normally closed solenoid valve. The solenoid valve is used to control the on / off state of the bypass branch 330, thereby enabling the bypass flow channel to be switched between bypass flow and non-bypass flow, providing simple and convenient adjustment and fast response. For example, in another embodiment, the control component 420 can be a proportional valve. The proportional valve is equipped with a stepping motor to achieve continuous, stepless adjustment with higher adjustment accuracy. This not only enables on / off control of the bypass flow channel, but also adjusts the flow rate of the bypass channel.

[0051] Furthermore, the control component 420 is detachably connected to the valve seat 410, specifically, it can be a snap 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 can be a threaded connection, 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, and 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 installing the control valve 400 on the water inlet pipe 310 or the water outlet pipe 320, the bypass branch 330 can be directly implemented with a single pipe. This can minimize the length of the bypass branch 330, making the structure of the water circuit assembly 300 more compact. Preferably, the control valve 400 is installed on the water inlet pipe 310. In this way, the temperature of the environment in which 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 includes a panel 121 that opposes the bottom housing 110 in a first direction. In some embodiments, the cover 120 typically further includes a side panel 122 connected to the panel 121. 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 that is closer to the panel 121, and the valve seat 410 is mounted on the water inlet pipe 310; alternatively, the water outlet pipe 320 is located on the side of the water inlet pipe 310 that is closer to the panel 121, and the valve seat 410 is mounted on the water outlet pipe 320. Thus, by arranging the water inlet pipe 310 and the water outlet pipe 320 side by side on a side of the water heater 10 body, this embodiment reduces the space occupied by the water circuit assembly 300 in the width direction of the water heater 10.

[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 understood that, in addition to forming an installation space together with the bottom shell 110, the panel 121 of the gas water heater 10 also generally includes a control panel or control buttons mounted on the panel 121. Common components of the panel 121 include a water inlet valve, an ignition valve, a temperature selector, a timer, and a power-off device. The water inlet valve is located in the water inlet line 310 and is used to control the flow and pressure of water entering the water tank. The ignition valve controls the flow of natural gas into the combustion chamber. The temperature selector is used to set the water temperature range, typically selecting between multiple levels, such as 40 degrees, 50 degrees, and 60 degrees. The timer is used to set the interval between heating and rest times, typically selecting between multiple time periods, such as 30 minutes, 45 minutes, and 90 minutes. The power-off device automatically cuts off the fuel supply to ensure safety when an abnormality is detected (e.g., low water level, high pressure, high temperature, unstable flame, etc.).

[0057] In addition to the above, the panel 121 of the gas water heater 10 may also include additional functions, such as energy-saving mode, water level sensor, automatic shutdown, and fault notification. Users can configure and operate these functions through the buttons or display on the panel 121. In some embodiments, a self-fault detection device for the control valve 400 may also be provided. If a fault occurs in the control component 420 of the control valve 400, a fault notification may be displayed directly on the panel 121, allowing the user to directly open the cover 120 to repair the control component 420.

[0058] Based on the previous embodiment, to facilitate removal of the control component 420 of the control valve 400 from the front, the control component 420 is disposed on the side of the valve seat 410 facing the panel 121. Typically, the bottom housing 110 has a side opening 111 opposite the water channel assembly 300 in the second direction. Thus, by disposing the control component 420 on the side of the valve seat 410 facing the panel 121, the user can open the cover 120 to see the control component 420. Since the other side of the control component 420 is not obstructed 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 can 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 sides.

[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 provided on the water inlet pipe 310 or the water outlet pipe 320, and the control component 420 is provided on the side of the valve seat 410 facing the panel 121; wherein the first direction intersects with the second direction. For details about 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 panel 122 of the cover 120, or the water outlet pipe 320 can be close to the side panel 122 of the cover 120.

[0063] See also Figure 3 and Figure 5 In a preferred embodiment, a concave cavity 301 facing the cover 120 is formed in the water circuit assembly 300 for mounting the valve seat 410, and the control component 420 is at least partially accommodated within the concave cavity 301. Thus, by constructing the concave cavity 301 facing the cover 120 in the pipeline for mounting the valve seat 410, the hot and cold water pipes can be brought closer together, reducing the length of the bypass pipe 430. Furthermore, in some embodiments, that is, when the depth of the concave cavity 301 is sufficiently large, the outer side of the control component 420 of the control valve 400 does not protrude beyond the outer edge of the heat exchanger 210, making it less susceptible to damage to the solenoid valve during transportation.

[0064] The concave cavity 301 may be constructed by bending a pipe for mounting the valve seat 410. The pipe for mounting the valve seat 410 may be the water inlet pipe 310 or the water outlet pipe 320, which is not specifically limited herein.

[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. In other words, the valve seat 410 is mounted 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 pipe 310 includes a first pipe section 311 and a second pipe section 312, which are adjacent to each other and are connected in a bend. The distance between the water inlet pipe 310 and the water outlet pipe 320 at the first pipe section 311 is smaller than the distance between them at the second pipe section 312. The valve seat 410 is located at the first pipe section 311. Preferably, the distance between the water inlet pipe 310 and the water outlet pipe 320 at the first pipe section 311 is the minimum distance between the water inlet pipe 310 and the water outlet pipe 320. In other embodiments, the water inlet pipe 310 and the water outlet pipe 320 may be arranged in parallel at the first pipe section 311.

[0067] In some embodiments, the water inlet pipeline 310 also includes a third section 313 of the pipeline, the first section 311 of the pipeline, the second section 312 of the pipeline and the third section 313 of the pipeline are bent in sequence, and 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 outlet pipe 320 is disposed on a side of the inlet pipe 310 close to the cover 120, and the valve seat 410 is disposed on the outlet pipe 320. In other words, the valve seat 410 is mounted on the outlet pipe 320, and the middle portion of the outlet pipe 320 is bent toward one side of the inlet pipe 310, thereby forming the concave cavity 301.

[0069] Specifically, the outlet pipe 320 includes a fourth and fifth adjacent pipe sections, which are connected in a bend. The distance between the outlet pipe 320 and the inlet pipe 310 at the fourth pipe section is smaller than the distance at the fifth pipe section. The valve seat 410 is located 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 arranged in parallel at the fourth pipe section.

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

[0071] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A water heater, characterized in that: include: A 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 channel assembly disposed in the housing, the water channel assembly comprising a water inlet pipe, a water outlet pipe, and a bypass branch, the water inlet pipe and the water outlet pipe being respectively connected to the heat exchange channel; the bypass branch being 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, wherein 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, wherein: The control component is connected to the valve seat via a fastener.

4. The water heater according to claim 3, wherein: 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, wherein: The control valve further includes 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 pipe, the inner cavity is connected to the water inlet pipe, one end of the bypass pipe is connected to the inner cavity, and the other end is connected to the water outlet pipe; Alternatively, the valve seat is installed on the water outlet pipe, the inner cavity is connected to the water outlet pipe, one end of the bypass pipe is connected to the inner cavity, and the other end is connected to the water inlet pipe.

6. The water heater according to claim 2, wherein: 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 pipe is located on a side of the water outlet pipe close to the panel, and the valve seat is installed on the water inlet pipe; Alternatively, the water outlet pipe is located on a side of the water inlet pipe close to the panel, and the valve seat is installed on the water outlet pipe.

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

8. The water heater according to claim 6, wherein: 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, wherein: 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 channel 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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