Kitchen water heater

Abstract

The kitchen water heater comprises a shell, the shell comprises a bottom plate and an upper cover body, the upper cover body is arranged on the bottom plate from top to bottom, a mounting cavity is formed between the upper cover body and the bottom plate, and a mounting supporting surface is formed on the bottom surface of the bottom plate; the inner container is located in the installation cavity and arranged on the bottom plate, the upper cover body covers the upper portion of the inner container, a foaming space is formed among the upper cover body, the bottom plate and the inner container, and a foaming layer is formed in the foaming space; the electric heating pipe is arranged in the inner container; and the inlet and outlet pipe group comprises a water inlet pipe and a water outlet pipe. The assembly difficulty of the kitchen water heater is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of household appliances, and in particular relates to a kitchen water heater. Background Art

[0002] Water heaters are a common household appliance in people's daily lives. They are categorized into various types, including HOUSE water heaters, gas water heaters, heat pump water heaters, and solar water heaters. HOUSE water heaters are widely used due to their ease of use. HOUSE water heaters are categorized by heating power as storage-type and instant-type. Storage-type water heaters, with their integrated water tank, offer high water flow and stable water temperature, making them popular with more households.

[0003] Conventional storage-type water heaters (commonly known as "Chubao") are used in kitchens because of their small water tank size, making them suitable for installation within cabinets. For example, the horizontal small kitchen heater, described in Chinese Patent Publication No. CN218455286U, comprises an outer shell, an inner tank, and an electric heating element. However, the outer shell comprises a rectangular body, a rear end cover, a front end cover, and a control chamber cover. During assembly, the horizontal arrangement of the inner tank with the inlet and outlet pipes located at the top of the tank complicates assembly due to the constraints of the inlet and outlet pipes extending from the top of the tank.

[0004] In view of this, how to design a technology to reduce assembly difficulty and improve assembly efficiency is the technical problem to be solved by this application. Summary of the Invention

[0005] The present application provides a Chubao water heater, which reduces the difficulty of assembly and improves the efficiency of assembly.

[0006] To achieve the above technical objectives, this application adopts the following technical solutions:

[0007] In one aspect, the present application provides a Chubao water heater, comprising:

[0008] The housing comprises a bottom plate and an upper cover, the upper cover being arranged on the bottom plate from top to bottom, a mounting cavity being formed between the upper cover and the bottom plate, and the bottom surface of the bottom plate forming a mounting support surface;

[0009] An inner liner, the inner liner is located in the mounting cavity and is disposed on the bottom plate, the upper cover covers an upper portion of the inner liner, a foaming space is formed between the upper cover, the bottom plate, and the inner liner, and a foaming layer is formed in the foaming space;

[0010] An electric heating tube, the electric heating tube being arranged in the inner container;

[0011] An inlet and outlet pipe group, the inlet and outlet pipe group includes a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are sealed and pass through the inner liner, the water outlet end of the water inlet pipe is located in the inner liner and arranged in the lower area of ​​the inner liner, and the water inlet end of the water outlet pipe is located in the inner liner and arranged in the upper area of ​​the inner liner; the water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe respectively extend to the outside of the upper cover body.

[0012] Compared with the prior art, the advantages and positive effects of the present application are: an outer shell is formed by cooperating with an upper cover body and a bottom plate to install components such as an inner liner. During the assembly process, the inner liner and other components are first installed and fixed on the bottom plate, and then the upper cover shell is installed on the bottom plate from above and covers the inner liner. The outer shell adopts an upper and lower split design. During assembly, the upper cover body is assembled from top to bottom, which reduces the assembly difficulty and improves the assembly efficiency.

[0013] In one embodiment of the present application, the water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe extend laterally outside the upper cover body.

[0014] In one embodiment of the present application, an upper flange structure is provided at the edge of the bottom plate, and the lower edge of the upper cover is wrapped around the outer side of the upper flange structure.

[0015] In one embodiment of the present application, an inspection port is further provided on the upper cover;

[0016] The housing further comprises a front panel and a mounting lining plate, wherein the mounting lining plate is disposed between the upper cover and the bottom plate, and the mounting lining plate divides the mounting cavity into a first cavity and a second cavity;

[0017] The inspection port is connected to the first cavity, the inner container is located in the second cavity, and the front panel is detachably arranged on the upper cover and covers the inspection port;

[0018] The horizontal kitchen heater further includes an electric control board, which is electrically connected to the electric heating tube and is located in the first cavity.

[0019] In one embodiment of the present application, a first retaining rib is provided on the base plate, and a slot is provided at the lower portion of the mounting liner, and the first retaining rib is retained in the slot.

[0020] In one embodiment of the present application, the top wall of the upper cover body is provided with positioning ribs, and the top of the mounting liner is overlapped on the positioning ribs.

[0021] In one embodiment of the present application, the mounting liner is provided with an auxiliary opening;

[0022] The housing is further provided with a first foam member and a second foam member; the first foam member is provided with a first mounting opening, the second foam member is provided with a second mounting opening and a third mounting opening, and the second mounting opening is arranged above the third mounting opening;

[0023] The flange on the inner tank passes through the first mounting port and the auxiliary opening in sequence, the first foam part is clamped between the mounting liner and the inner tank, the water outlet pipe passes through the second mounting port, and the water inlet pipe passes through the third mounting port.

[0024] In one embodiment of the present application, a wiring groove is provided on the lower surface of the bottom plate, and the wiring groove extends from front to back to the rear side of the housing;

[0025] The bottom plate is also provided with a wire outlet hole, which is connected to the wiring groove; the power supply cable connected to the electric control board passes through the wire outlet hole and extends out of the rear side of the shell through the wiring groove.

[0026] In one embodiment of the present application, a wiring tube is further provided on the base plate. The wiring tube is arranged vertically and connected to the wire outlet hole, and the power supply cable passes through the wiring tube.

[0027] In one embodiment of the present application, transport and lifting portions are further provided on both sides of the base plate, and the transport and lifting portions are concave structures formed on the bottom surface of the base plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 This application is a schematic structural diagram of one embodiment of the kitchen water heater;

[0030] Figure 2 This is the second structural diagram of an embodiment of the Chubao water heater of the present application;

[0031] Figure 3 This is a cross-sectional view of an embodiment of the Chubao water heater of the present application;

[0032] Figure 4 for Figure 3 A partial enlarged schematic diagram of area A in the middle;

[0033] Figure 5 for Figure 3 A partial enlarged schematic diagram of area B in the middle;

[0034] Figure 6 for Figure 1 Exploded view of the Zhongchubao water heater;

[0035] Figure 7 for Figure 6 Schematic diagram of the structure of the midsole plate;

[0036] Figure 8 for Figure 6 Schematic diagram of the structure of the middle and upper cover;

[0037] Figure 9 for Figure 6 Schematic diagram of the structure of the middle liner

[0038] Figure 10 for Figure 6 Assembly cross-sectional view of the middle liner, inlet and outlet pipe groups, and electric heating pipes;

[0039] Figure 11 for Figure 10 Schematic diagram of the structure of the middle and outer liner;

[0040] Figure 12 This is the third structural diagram of an embodiment of the Chubao water heater of this application;

[0041] Figure 13 for Figure 12 Middle CC section view;

[0042] Figure 14 This is a structural diagram of an embodiment of the Chubao water heater of the present application in a maintenance state.

[0043] Description of reference numerals:

[0044] 1. Housing; 11. Bottom plate; 12. Upper cover; 13. First foaming member; 14. Second foaming member; 15. Electronic control panel; 16. Decorative panel; 17. Front panel; 18. Mounting lining; 19. Support surface;

[0045] 111. First retaining rib; 112. Second retaining rib; 113. Positioning groove; 114. Upper flange structure; 115. Cable routing groove; 116. Cable outlet hole; 117. Cable routing tube; 118. Cable retaining portion; 119. Handling and lifting portion; 121. Mounting notch; 122. Positioning retaining rib; 161. Mounting opening; 181. Slot; 182. Auxiliary opening; 131. First mounting opening; 141. Second mounting opening; 142. Third mounting opening; 151. Knob;

[0046] 2. Inner liner; 21. Flange; 22. First mounting tube; 23. Second mounting tube; 24. Insulation pad; 26. Temperature measuring tube;

[0047] 3. Electric heating tube; 31. Straight support section; 32. Curved heating section; 33. Mounting seat;

[0048] 4. Inlet and outlet pipe assembly; 41. Water inlet pipe; 42. Water outlet pipe; 43. Outer lining pipe; 44. Thermostatic valve; 45. Connecting pipe;

[0049] 431. Second elbow; 432. Outer flange structure. DETAILED DESCRIPTION

[0050] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0051] It should be noted that in the description of this application, terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0052] In this application, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0053] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0054] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0055] The Chubao water heater uses electricity as its main energy material. The high-temperature heat generated after power is turned on directly heats the water stored in the Chubao water heater to achieve the purpose of preparing hot water.

[0056] A Chubao water heater usually consists of a water tank, an electric heating component, and an electric control board. A water storage cavity is formed in the water tank to store the water to be heated. The electric heating component is inserted into the water storage cavity formed by the water tank. The electric control board is used to control the on and off operation of the electric heating component so that the water in the water tank is heated to the set temperature.

[0057] The water tank of a Chubao water heater typically consists of an outer shell and an inner liner, with an insulation layer between them. The outer shell is typically made of plastic to meet diverse design requirements, while the inner liner can be made of metal or plastic depending on the needs.

[0058] In addition, the insulation layer formed between the outer shell and the inner liner is made of commonly used insulation materials such as asbestos, sponge, foam plastic, polyurethane foam, etc. In conventional technology, in order to obtain a good insulation effect, the insulation layer is usually formed by foaming.

[0059] Among them, for the inner tank with a metal body, the interior of the inner tank is prone to corrosion due to the influence of water quality. For this reason, a magnesium rod is also configured on the water tank, and the magnesium rod is inserted into the water storage cavity inside the water tank.

[0060] Because magnesium has the lowest potential in the electrochemical series and is physiologically non-toxic, it is ideal for use as a magnesium rod to protect the inner liner. The size of the magnesium rod directly affects the duration and effectiveness of the protective effect. The larger the magnesium rod, the better the protection and the longer the protection lasts.

[0061] The water tank is also provided with a water inlet pipe and a water outlet pipe. The water inlet pipe is used to deliver cold water to the water storage cavity formed in the water tank, while the hot water in the water storage cavity is output from the water outlet pipe.

[0062] As for the electric control board, it is used to receive detection signals sent by relevant sensors (such as water temperature sensor, flow sensor), and at the same time, control the power on and off operation of the electric heating component.

[0063] When the water heater is working, the electric control board controls the electric heating component to be powered on for heating. When the water temperature in the water tank reaches the set value, the electric control board controls the electric heating component to be powered off.

[0064] Example 1, as Figures 1-14 As shown, this embodiment provides a Chubao water heater, comprising:

[0065] A housing 1, wherein the bottom of the housing 1 forms a mounting support surface 19;

[0066] An inner liner 2, the inner liner 2 being arranged in the outer shell 1;

[0067] An electric heating tube 3, which is arranged in the inner tank 2;

[0068] The inlet and outlet pipe group 4 includes a water inlet pipe 41 and a water outlet pipe 42 . The water inlet pipe 41 and the water outlet pipe 42 are sealed and pass through the inner container 2 .

[0069] Specifically, the bottom of the shell 1 of the Chubao water heater provided in one embodiment of the present application forms an installation support surface 19. When installed in the user's home, the installation is completed by placing it in the cabinet through the installation support surface 19 without the need for hanging installation.

[0070] In order to reduce the overall height of the Chubao water heater and increase the volume of the inner tank 2, the installation method of the inner tank 2 and the inlet and outlet pipe group 4 can also be improved as follows.

[0071] The inner pot 2 is laterally arranged in the outer shell 1; the electric heating tube 3 extends laterally and is arranged in the inner pot 2; the water outlet end of the water inlet pipe 41 is located in the inner pot 2 and is arranged in the lower area of ​​the inner pot 2, and the water inlet end of the water outlet pipe 42 is located in the inner pot 2 and is arranged in the upper area of ​​the inner pot 2; wherein, the water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 respectively extend to the outside of the outer shell 1 and extend laterally.

[0072] Specifically, the water inlet pipe 41 and the water outlet pipe 42 extend laterally from the outer shell 1 to the outside of the outer shell 1. The water inlet end of the water inlet pipe 41 is in a laterally extended state to facilitate connection with the water pipe in the cabinet without occupying height space. The water outlet end of the water outlet pipe 42 is also in a laterally extended state to facilitate connection with the water pipe in the cabinet without occupying height space.

[0073] In this way, on the one hand, for the Chubao water heater as a whole, during installation, as long as the top height of the shell 1 meets the installation requirements, the Chubao water heater can be installed in the cabinet without being restricted by the water inlet pipe 41 and the water outlet pipe 42 connecting pipe 45, so as to facilitate installation and have greater versatility; on the other hand, since the overall height of the shell 1 is not restricted by the height position of the water inlet and outlet pipes 42, the diameter of the inner tank 2 in the shell 1 can be further increased, and the volume of the inner tank 2 can be effectively increased while the length of the shell 1 remains unchanged.

[0074] Since the Chubao water heater is installed in a cabinet in a user's home, the height of the housing 1 is 200 mm to 500 mm to distinguish it from a conventional wall-mounted Chubao water heater.

[0075] By arranging the inner tank 2 horizontally, and extending the water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 horizontally to the outside of the outer shell 1, in this way, during the process of connecting with the external pipeline, the height space in the cabinet can be saved, thereby effectively increasing the diameter of the inner tank 2. Under normal circumstances, the height space in the cabinet is limited but has sufficient depth to meet the installation requirements of the kitchen water heater, so that the inner tank 2 of the kitchen water heater has sufficient length. When the length of the inner tank 2 remains the same, the increase in the diameter of the inner tank 2 can effectively increase the volume of the kitchen water heater to improve the user experience.

[0076] In one embodiment, since the water outlet pipe 42 and the water inlet pipe 41 are arranged horizontally as a whole, in order to improve the hot water output rate of the Chubao water heater, the water inlet end of the water outlet pipe 42 is bent upward to form a first elbow, and the opening of the first elbow is close to the top wall of the inner tank 2.

[0077] Specifically, the water inlet end of the water outlet pipe 42 in the inner tank 2 forms a first elbow, and the opening of the first elbow is located at the top of the inner tank 2. In this way, during the process of outputting hot water, hot water can be output from the top of the inner tank 2 to improve the hot water output rate.

[0078] At the same time, since the outlet pipe 42 is formed with a first elbow, the water inlet position of the outlet pipe 42 can be arranged as close to the top area of ​​the inner liner 2 as possible. In this way, the outlet pipe 42 does not need to be as close to the upper wall of the inner liner 2 as possible, thereby solving the technical problem of poor welding quality caused by the increase of burrs due to the larger intersection line between the outlet pipe 42 and the inner liner 2.

[0079] Similarly, the requirement of increasing the hot water output rate can also be met by installing an outer lining tube 43 outside the water outlet pipe 42. Specifically, the outer lining tube 43 is located in the inner pot 2, and the free end of the outer lining tube 43 bends upward to form a second elbow 431. The opening of the second elbow 431 is close to the top wall of the inner pot 2.

[0080] Specifically, an outer lining tube 43 is sheathed on the outside of the water outlet pipe 42. The outer lining tube 43 extends into the free end of the inner container 2 to form a second elbow 431. The opening of the second elbow 431 is close to the top wall of the inner container 2. In this way, when hot water is output to the outside through the water outlet pipe 42, the hot water at the top of the inner container 2 flows into the outer lining tube 43 through the second elbow 431, flows into the water outlet pipe 42 through the water inlet end, and is transported to the outside of the housing 1.

[0081] At the same time, since the outer liner 43 is formed with a second elbow 431, the water inlet position of the second elbow 431 can be arranged as close to the top area of ​​the inner liner 2 as possible. In this way, the water outlet pipe 42 does not need to be as close to the upper wall of the inner liner 2 as possible, thereby solving the technical problem of poor welding quality caused by the increase of burrs due to the larger intersection line between the water outlet pipe 42 and the inner liner 2.

[0082] Furthermore, in order to facilitate the installation of the outer liner 43 , an outer flange structure 432 is provided at the outer end of the outer liner 43 , and the outer flange structure 432 is overlapped on the outer side of the inner liner 2 .

[0083] Specifically, during the assembly process, the outer lining tube 43 is first inserted into the inner liner 2. After the outer lining tube 43 is inserted into place, it is positioned against the outer surface of the inner liner 2 through the outer flange structure 432 to meet the requirements of precise installation of the outer lining tube 43.

[0084] In one embodiment of the present application, a flange 21 is provided at one end of the inner container 2, and a mounting seat 33 is provided at the mounting end of the electric heating tube 3, and the mounting seat 33 is provided on the flange 21;

[0085] The other end of the inner tank 2 is provided with a first mounting tube 22 and a second mounting tube 23, and the first mounting tube 22 is arranged above the second mounting tube 23. The first mounting tube 22 and the second mounting tube 23 are respectively welded to the inner tank 2 and are respectively connected to the inner tank 2; the water outlet pipe 42 is sealed and inserted in the first mounting tube 22, and the water inlet pipe 41 is sealed and inserted in the second mounting tube 23.

[0086] Specifically, to facilitate installation of the inlet and outlet pipe group 4 and the electric heating pipe 3, a flange 21 is provided at one end of the inner container 2. The flange 21 satisfies the installation requirements of the electric heating pipe 3. A first mounting tube 22 and a second mounting tube 23 are provided at the other end of the inner container 2. The first mounting tube 22 and the second mounting tube 23 are welded to the inner container 2. In this way, the installation requirements of the water inlet pipe 41 and the water outlet pipe 42 can be met.

[0087] In another embodiment of the present application, two foam support members are further provided in the shell 1. The two foam support members are arranged opposite to each other and vertically arranged in the shell 1. The side walls of the foam support members form a concave surface, and the concave surface matches the end profile of the inner liner 2.

[0088] The inner liner 2 is sandwiched between the two foam support members. A foam layer is provided between the outer shell 1 and the inner liner 2 , and the foam layer is arranged between the two foam support members.

[0089] Specifically, because the inner tank 2 of the Chubao water heater is arranged horizontally, foam support members are installed at each end of the inner tank 2 to provide good support and insulation. The concave surfaces formed by the foam support members are compatible with the end surfaces of the corresponding ends of the inner tank 2, allowing the ends of the inner tank 2 to fit tightly against the concave surfaces of the foam support members, improving assembly reliability. Furthermore, the foam support members also provide insulation at the ends of the inner tank 2.

[0090] After the ends of the inner liner 2 are supported and insulated by foam support members, in order to improve the overall thermal insulation performance of the inner liner 2, a foaming material is filled between the two foam support members. The foaming material forms a foaming layer between the inner liner 2 and the outer shell 1 to improve the thermal insulation performance of the inner liner 2.

[0091] Furthermore, since the structures of the two ends of the inner container 2 are different, in order to facilitate the distinguishing assembly, the two foam support members are divided into a first foam member 13 and a second foam member 14;

[0092] The first foaming member 13 is provided with a first mounting opening 131 , and the flange 21 provided on the inner container 2 passes through the first mounting opening 131 ;

[0093] The second foaming member 14 is provided with a second mounting opening 141 and a third mounting opening 142 . The second mounting opening 141 is arranged above the third mounting opening 142 . The water outlet pipe 42 passes through the second mounting opening 141 , and the water inlet pipe 41 passes through the third mounting opening 142 .

[0094] Specifically, the inner tank 2 is provided with an end portion of a flange 21 assembled on the first foam part 13. The flange 21 is used to install the electric heating tube 3. In order to meet the power supply requirements of the electric heating tube 3, a first mounting port 131 is provided on the first foam part 13. The flange 21 passes through the first mounting port 131 to facilitate circuit wiring.

[0095] A water inlet pipe 41 and a water outlet pipe 42 need to be installed at the other end of the inner tank 2. To this end, a second installation port 141 and a third installation port 142 are provided on the second foam part 14. The first installation pipe 22 will pass through the second installation port 141, and the second installation pipe 23 will pass through the third installation port 142.

[0096] Furthermore, in order to improve the installation accuracy of the foam support and reduce the overflow and leakage of the foam material, the bottom of the housing 1 is provided with a first retaining rib 111 and a second retaining rib 112;

[0097] The first foaming member 13 is arranged on the rear side of the first retaining rib 111 , and the second foaming member 14 is arranged on the rear side of the second retaining rib.

[0098] Specifically, the first barrier rib 111 and the second barrier rib 112 can limit the positions of the first foam part 13 and the second foam part 14 to ensure that the first foam part 13 and the second foam part 14 are installed in place, and during the foaming process, the first barrier rib 111 and the bottom of the first foam part 13 form an overlapping area. Similarly, the second barrier rib 112 and the bottom of the second foam part 14 form an overlapping area, and the overlapping area is used to prevent overflow of the foaming material.

[0099] Furthermore, in order to improve the installation reliability of the inner liner 2 and ensure that the position of the inner liner 2 remains stable during the foaming process, a mounting base is also provided at the bottom of the inner liner 2, and the mounting base is fixedly connected to the outer shell 1.

[0100] Specifically, during assembly, the two ends of the inner liner 2 are supported by the first foam member 13 and the second foam member 14. Furthermore, the mounting bracket disposed at the bottom of the inner liner 2 is directly fixed to the bottom plate 11 of the outer shell 1 using screws or other means, thereby ensuring that the position between the inner liner 2 and the bottom plate 11 of the outer shell 1 is stable and immovable. This ensures that the force generated by the foaming material between the inner liner 2 and the outer shell 1 during the foaming process does not affect the position of the inner liner 2, thereby improving product quality.

[0101] The mounting base can be fixedly connected to the inner liner 2 by welding.

[0102] Furthermore, in order to improve assembly accuracy and assembly convenience, a positioning groove 113 is further provided at the bottom of the housing 1 , and the mounting base is also located in the positioning groove 113 .

[0103] Specifically, a mounting groove is also provided on the bottom plate 11 of the outer shell 1. When the inner liner 2 is assembled on the bottom plate 11 of the outer shell 1, the mounting groove on the bottom plate 11 can accommodate the mounting fixing seat at the bottom of the inner liner 2, so that pre-assembly can be achieved through the cooperation of the mounting fixing seat and the mounting groove, thereby improving the assembly accuracy and convenience.

[0104] In some embodiments of the present application, the water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 extend from the housing 1 in various positions, for example:

[0105] The water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 are arranged at the rear end of the housing 1. Alternatively, the water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 are arranged at the side of the housing 1.

[0106] Specifically, the water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 are arranged at the rear end of the housing 1 for description.

[0107] The water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 are both arranged at the rear end of the shell 1. When connecting the water pipes, the water pipes in the user's home are connected at the rear of the shell 1. After connection, the pipes are arranged at the rear of the shell 1 without occupying the space at the top of the shell 1.

[0108] In another embodiment, in order to facilitate users to operate the Chubao water heater to adjust the temperature and to facilitate subsequent operators to repair electrical components, an electrical room is provided at the front end of the housing 1, and an electrical control panel 15 is provided in the electrical room.

[0109] Specifically, the front end of the housing 1 is provided with an electrical room to install the electrical control board 15 , and a corresponding thermostat connected to the electrical control board 15 is also provided in the electrical room, and a knob 151 for adjusting the thermostat is provided outside the front end of the housing 1 .

[0110] Like this, after the user opens the cabinet, just can adjust the heating temperature through the knob 151 at the front of shell 1. Simultaneously, when needing to repair, the operator can also open the cabinet and carry out repair at the front of shell 1.

[0111] In the second embodiment, since the inner tank 2 is arranged horizontally in the outer shell 1, and the inlet and outlet water pipes 42 need to extend horizontally to the outside of the outer shell 1 and meet the requirements of horizontal pipe connection, the following structural improvements are made to the outer shell 1.

[0112] like Figure 3-Figure 8 As shown, the housing 1 includes a bottom plate 11 and an upper cover 12. The upper cover 12 is arranged on the bottom plate 11 from top to bottom. A mounting cavity is formed between the upper cover 12 and the bottom plate 11. The bottom surface of the bottom plate 11 forms a mounting support surface 19. The mounting support surface 19 is configured to place the Chubao water heater on the bottom surface of the cabinet inside the cabinet.

[0113] The inner container 2 is located in the installation cavity and is arranged on the bottom plate 11. The upper cover 12 covers the upper part of the inner container 2. A foaming space is formed between the upper cover 12, the bottom plate 11 and the inner container 2. A foaming layer is formed in the foaming space.

[0114] The water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 respectively extend to the outside of the upper cover body 12 and extend laterally.

[0115] Specifically, the shell 1 adopts a split structural design, which includes a base plate 11 and an upper cover 12. The base plate 11 is used to pre-assemble the inner liner 2, the first foam part 13 and the second foam part 14. Then, the upper cover 12 is assembled from the top to the bottom plate 11 to cover the inner liner 2, the first foam part 13 and the second foam part 14 pre-assembled on the base plate 11.

[0116] After the upper cover 12 is installed on the bottom plate 11, a foaming space is formed between the upper cover 12, the bottom plate 11, the inner liner 2, the first foaming member 13 and the second foaming member 14, and then the foaming material is filled into the foaming space to form a foaming layer.

[0117] The outer shell 1 is formed by cooperating with the upper cover 12 and the bottom plate 11 to install the inner liner 2 and other components. During the assembly process, the inner liner 2 and other components are first installed and fixed on the bottom plate 11, and then the upper cover is installed on the bottom plate 11 from above to cover the inner liner 2. The outer shell 1 adopts an upper and lower split design. During assembly, the upper cover 12 is assembled from the top to the bottom, which reduces the assembly difficulty and improves the assembly efficiency.

[0118] In one embodiment, in order to improve the connection reliability between the upper cover 12 and the bottom plate 11 , an upper flange structure 114 is provided on the edge of the bottom plate 11 , and the lower edge of the upper cover 12 is wrapped around the outer side of the upper flange structure 114 .

[0119] Specifically, when the upper cover body 12 is assembled with the base plate 11, the upper flange structure 114 formed on the edge of the base plate 11 is inserted into the inner edge of the upper cover body 12 so that the upper flange is against the inner wall of the upper cover body 12, so that the base plate 11 and the upper cover body 12 can be pre-assembled together.

[0120] Among them, a protruding connecting portion is also provided on the inner wall of the upper cover body 12, and a threaded hole is formed on the connecting portion. The screw passes through the mounting hole on the base plate 11 and is threadedly connected in the threaded hole, so that the base plate 11 and the upper cover body 12 are fixedly connected together.

[0121] In another embodiment, a mounting notch 121 is provided on the upper cover 12 , and the mounting notch 121 extends to the lower edge of the upper cover 12 ;

[0122] The water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 are located in the installation notch 121;

[0123] The housing 1 also includes a decorative plate 16, which is provided with two installation openings 161. The decorative plate 16 is arranged on the upper cover 12, and the decorative plate 16 covers the installation notch 121. The water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 respectively pass through the corresponding installation openings 161.

[0124] Specifically, in order to effectively reduce the difficulty of assembly, the water inlet pipe 41 and the water outlet pipe 42 connected to the inner liner 2 need to extend to the outside of the upper cover 12, and a mounting notch 121 is provided on the upper cover 12. During the process of assembling the upper cover 12 to the base plate 11, the mounting notch 121 provided on the upper cover 12 will avoid the water inlet pipe 41 and the water outlet pipe 42 extending from the inner liner 2. As a result, during the assembly process, the operator does not need to adjust the posture of the upper cover 12. The operator only needs to place the upper cover 12 vertically on the base plate 11 to complete the assembly of the upper cover 12. After the upper cover 12 is assembled to the base plate 11, the water inlet pipe 41 and the water outlet pipe 42 will be located in the mounting notch 121. Then, the decorative panel 16 is installed on the upper cover 12 to cover the mounting notch 121, and the water inlet pipe 41 and the water outlet pipe 42 will be inserted into the corresponding mounting openings 161.

[0125] The design of the mounting notch 121 not only satisfies the horizontal installation requirements of the water inlet pipe 41 and the water outlet pipe 42, but also effectively reduces the difficulty of assembly and improves assembly efficiency. The decorative panel 16 is installed on the upper housing 12 in a substantially vertical arrangement. The mounting openings 161 on the decorative panel 16 meet the installation requirements of the water inlet pipe 41 and the water outlet pipe 42. During assembly, after adjusting the position of the decorative panel 16, the water inlet pipe 41 and the water outlet pipe 42 are inserted into the corresponding mounting openings 161, and assembly is complete.

[0126] Furthermore, the decorative plate 16 is provided with a claw, and the upper cover 12 is provided with a clamping hole, and the clamping hole is arranged at the installation notch 121;

[0127] The clamping claw is clamped in the clamping hole.

[0128] Specifically, for the decorative panel 16 , in order to improve assembly efficiency and achieve screw-free fixation, a clamping claw can be provided on the decorative panel 16 , and the decorative panel 16 is clamped into the clamping hole through the clamping claw to achieve the clamping of the decorative panel 16 onto the upper cover 12 .

[0129] In another embodiment, the upper cover 12 is further provided with an inspection port;

[0130] The housing 1 further includes a front panel 17 and a mounting liner 18 , wherein the mounting liner 18 is disposed between the upper cover 12 and the bottom plate 11 , and the mounting liner 18 divides the mounting cavity into a first cavity and a second cavity;

[0131] The inspection port is connected to the first cavity, the inner container 2 is located in the second cavity, and the front panel 17 is detachably arranged on the upper cover 12 and covers the inspection port;

[0132] The Chubao water heater further includes an electric control board 15 , which is electrically connected to the electric heating tube 3 . The electric control board 15 is located in the first cavity; the first cavity forms an electrical appliance room.

[0133] Specifically, to facilitate the formation of an electrical compartment for mounting electrical components such as the electrical control board 15, the housing 1 further includes a front panel 17 and a mounting liner 18. The mounting liner 18 partitions the mounting cavity into a first cavity and a second cavity, thereby enabling independent mounting of the liner 2 and the electrical control board 15. Furthermore, the front panel 17 is detachably mounted on the upper housing 12, making it easier for maintenance personnel to open the front panel 17 and expose the electrical control board 15 and other electrical components within the electrical compartment during subsequent inspections.

[0134] Furthermore, a first retaining rib 111 is provided on the bottom plate 11 , and a clamping groove 181 is provided at the lower portion of the mounting liner 18 , and the first retaining rib 111 is clamped in the clamping groove 181 .

[0135] Specifically, in order to facilitate the installation and positioning of the mounting liner 18, a card slot 181 is also provided at the lower part of the mounting liner 18. The mounting liner 18 is mounted on the first retaining rib 111 provided on the base plate 11 through the card slot 181 to realize the pre-assembly of the mounting liner 18 on the base plate 11.

[0136] Correspondingly, the first foam member 13 will be correspondingly abutted against the mounting liner 18 , and the mounting liner 18 will further be used to position and install the first foam member 13 .

[0137] Furthermore, in order to position the top of the mounting liner 18 , a positioning rib 122 is provided on the top wall of the upper cover 12 , and the top of the mounting liner 18 is overlapped on the positioning rib 122 .

[0138] Specifically, after the upper cover 12 is assembled on the base plate 11, the top of the mounting liner 18 will overlap the positioning rib 122, and after the first foam part 13, the second foam part 14 and the inner liner 2 are assembled on the base plate 11, the first foam part 13 will be tightly attached to the mounting liner 18, so that the top of the mounting liner 18 is tightly attached to the positioning rib 122.

[0139] Furthermore, an auxiliary opening 182 is provided on the mounting liner 18; a first foam part 13 and a second foam part 14 are also provided in the outer shell 1; a first mounting port 131 is provided on the first foam part 13, and a second mounting port 141 and a third mounting port 142 are provided on the second foam part 14, and the second mounting port 141 is arranged above the third mounting port 142; the flange 21 on the inner tank 2 passes through the first mounting port 131 and the auxiliary opening 182 in sequence, the first foam part 13 is clamped between the mounting liner 18 and the inner tank 2, the water outlet pipe 42 passes through the second mounting port 141, and the water inlet pipe 41 passes through the third mounting port 142.

[0140] Specifically, the flange 21 on the inner tank 2 passes through the first mounting opening 131 on the first foam part 13 and is located in the electrical room via the auxiliary opening 182, so that the electric heating tube 3 on the flange 21 is connected to the electric control board 15 in the electrical room through a cable.

[0141] In the third embodiment, in order to improve the safety and reliability of use, the electrical room is arranged at the front end of the housing 1 , while the water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 are arranged at the rear end of the housing 1 .

[0142] like Figure 1-Figure 7 、 Figure 14 As shown, by separating the electrical room and the inlet and outlet water pipes 42 from each other, the electrical room is arranged at the front end of the shell 1 to facilitate user operation, and the inlet and outlet water pipes 42 are completely isolated from the electrical room, which can avoid water leakage at the end connection position of the inlet and outlet water pipes 42 and cause damage to electrical components in the electrical room, thereby improving the reliability of the kitchen treasure.

[0143] Since the electrical room is arranged at the front end of the housing 1, the power supply cable needs to be connected to the electrical control board 15 in the electrical room. In order to achieve hidden wiring, the lower surface of the bottom plate 11 is provided with a wiring groove 115, which extends from the front to the back to the rear side of the housing 1;

[0144] The bottom plate 11 is further provided with a wire outlet hole 116 , which is connected to the wiring groove 115 ; the power supply cable connected to the electric control board 15 passes through the wire outlet hole 116 and extends out of the rear side of the housing 1 through the wiring groove 115 .

[0145] Specifically, an electrical room is formed at the front end of the housing 1 to install the electrical control board 15. The power supply cable connected to the electrical control board 15 is arranged in the wiring groove 115 through the outlet hole 116 from the electrical room, and finally passes through the wiring groove 115 to the rear end of the housing 1.

[0146] In this way, after the Chubao water heater is installed in a cabinet in the user's home, the power supply cable will be arranged at the back of the shell 1. In this way, there is no cable leading out from the front end of the shell 1, which is more conducive to optimizing the appearance.

[0147] Furthermore, a wiring tube 117 is provided on the base plate 11 . The wiring tube 117 is arranged vertically and communicates with the wire outlet hole 116 . The power supply cable passes through the wiring tube 117 .

[0148] Specifically, since the Chubao water heater is placed in a cabinet, if the basin above the cabinet overflows and causes water to accumulate at the bottom of the cabinet where the housing 1 is located, the accumulated water will flow through the wiring groove 115 into the cable outlet 116. However, since the upper surface of the bottom plate 11 is also provided with a vertically arranged cable duct 117, the height of the cable duct 117 is higher than the upper surface of the bottom plate 11. This way, even if water accumulates in the cabinet, the water level will not be higher than the top of the cable duct 117, thus preventing the accumulated water from entering the appliance compartment through the cable outlet 116, further improving operational reliability.

[0149] In another embodiment, a wire blocking portion 118 is further provided on the bottom plate 11 . The wire blocking portion 118 extends perpendicularly to the length direction of the wiring groove 115 , and a gap is formed between the free end of the wire blocking portion 118 and the groove wall of the wiring groove 115 .

[0150] Specifically, the wire blocking portion 118 is arranged at one edge of the wiring groove 115 and extends toward the other edge of the wiring groove 115. A gap is formed between the free end of the wire blocking portion 118 and the other edge of the wiring groove 115. The distance of the gap will be smaller than the diameter of the power supply cable and ensure that the power supply cable can enter the wiring groove 115 through the gap after being extruded and deformed.

[0151] In one embodiment, a transport and lifting portion 119 is further provided on both sides of the bottom plate 11 . The transport and lifting portion 119 is a concave structure formed on the bottom surface of the bottom plate 11 .

[0152] Specifically, in order to facilitate the operator to carry the Kitchen Treasure water heater, a carrying and pulling portion 119 can also be provided on the bottom plate 11. The carrying and pulling portion 119 is formed on the bottom plate 11 and is concave upward. During the carrying process, the user inserts his hand into the carrying and pulling portion 119 to lift and move the Kitchen Treasure water heater.

[0153] In the fourth embodiment of the Chubao water heater, in order to reduce the overall height while also meeting the requirement for efficient heating of the electric heating tube 3 in the inner tank 2, the following structural and installation position improvements were made to the electric heating tube 3 to meet the installation requirements of arranging the water inlet pipe 41 and the water outlet pipe 42 horizontally in the inner tank 2 and to ensure that the electric heating tube 3 does not interfere with the water inlet pipe 41 to meet the requirement for efficient heating.

[0154] like Figure 10-13 As shown, the electric heating tube 3 includes a straight support section 31 and a curved heating section 32, and the curved heating section 32 is connected to the straight support section 31;

[0155] The straight support end is fixedly mounted on the flange 21 on the inner liner 2 , the curved heating section 32 is offset toward the side wall of the inner liner 2 and arranged on one side of the water inlet pipe 41 , and the curved heating section 32 is located at the bottom of the inner liner 2 .

[0156] Specifically, the end of the linear support section 31 is fixed to a mounting base 33, which secures it to the flange 21 of the inner liner 2. The linear support section 31 supports the curved heating section 32. The curved heating section 32, by virtue of its curved, extended structure, is positioned below the inner liner 2. This curved heating section 32 heats the water from the bottom of the inner liner 2, improving the heating efficiency of the water in the inner liner 2.

[0157] The curved heating section 32 is arranged close to the bottom area of ​​the inner container 2 .

[0158] In addition, in order to avoid interference with the water inlet pipe 41 at the bottom, the curved heating section 32 is offset from one side of the inner pot 2. In this way, although the electric heating pipe 3 and the water inlet pipe 41 are both arranged horizontally in the inner pot 2, the offset installation of the electric heating pipe 3 can avoid installation interference and ensure heating efficiency.

[0159] Furthermore, in order to improve the hot water output rate and realize instant water supply, the electric heating tube 3 also includes an extended heating section (not shown), which extends to the top of the inner tank 2 and is arranged close to the water outlet pipe 42.

[0160] Specifically, the electric heating tube 3 may also be provided with an extended heating section extending upward and arranged around the water outlet pipe 42. The extended heating section can heat the water entering the water outlet pipe 42 and the water around the water outlet pipe 42, thereby realizing instant water supply.

[0161] The extended heating section can be connected to the curved heating section 32 and extend upward from the curved heating section 32 to the water outlet pipe 42. Alternatively, the extended heating section can be independent of the curved heating section 32 and can be a separate heating pipe body, with the end of the extended heating section fixedly mounted on the mounting base 33.

[0162] In addition, the extended heating section is also wrapped around the periphery of the water outlet pipe 42 .

[0163] Specifically, the extended heating section can be wrapped around the periphery of the water outlet pipe 42 to increase the overall length of the extended heating section, thereby improving the heating efficiency and heating speed.

[0164] In some embodiments of the present application, a heat insulating pad 24 is further provided between the inner liner 2 and the foam support member.

[0165] Specifically, because the liner 2 is arranged horizontally and has a relatively small overall height, the foam support member provided at the end of the liner 2 is in close contact with the liner 2. During the dry-burn test, the temperature at the top of the liner 2 rises rapidly, reaching 200°C within a short period of time. However, the foam support member is typically made of foam and is easily affected by high temperatures and melts.

[0166] To this end, a heat insulating pad 24 is provided at at least one end portion of the inner container 2 to protect the foam support.

[0167] Normally, the electric heating tube 3 distributed at the flange 21 of the inner tank 2 is a straight support section 31, and its heat generation is smaller than that of the curved heating section 32. Since the curved heating section 32 is close to the position where the fixed water inlet pipe 41 and the water outlet pipe 42 are installed on the inner tank 2, the heat generation of the curved heating section 32 is larger. Therefore, an insulation pad 24 is provided at least between the inner tank 2 and the second foam part 14.

[0168] Furthermore, in order to facilitate the installation and positioning of the thermal insulation pad 24, the thermal insulation pad 24 can be bonded to the outer surface of the inner liner 2.

[0169] Alternatively, the thermal insulation pad 24 is provided with a positioning portion 241 , and correspondingly, the second foaming member 14 is provided with a positioning matching portion 143 .

[0170] Specifically, during the actual assembly process, the thermal insulation pad 24 will be attached to the end of the inner liner 2 provided with the water inlet pipe and the water outlet pipe, and the inner liner 2 will be clamped between the first foam part 13 and the second foam part 14. When the inner liner 2 is assembled between the first foam part 13 and the second foam part 14, the positioning portion 241 of the thermal insulation pad 24 cooperates with the positioning matching portion 143 on the second foam part 14 to position the thermal insulation pad 24, so as to ensure that the thermal insulation pad 24 can be accurately positioned, thereby playing a good thermal insulation role at the position where the inner liner 2 needs to be insulated, and playing a role of thermal insulation protection for the second foam part 14.

[0171] The positioning portion 241 may be a positioning protrusion, and correspondingly, the positioning matching portion 143 is a positioning groove formed on the second foam part 14 . When the positioning protrusion is inserted into the positioning groove, the thermal insulation pad 24 can be positioned and installed.

[0172] Preferably, the thermal insulation pad 24 covers the concave surface of the second foaming member 14 , thereby completely isolating the second foaming member 14 from the inner liner 2 .

[0173] In another embodiment of the present application, the Chubao water heater further includes a temperature sensing component, which includes a temperature measuring tube and a temperature sensor, and the temperature measuring tube is arranged at the end of the inner tank 2.

[0174] Specifically, the temperature sensing component extends into the inner tank 2 through the temperature measuring tube, so as to measure the temperature of the water in the inner tank 2 through the temperature sensor.

[0175] The temperature measuring tube can be fixed on the mounting base 33 so as to be supported and installed by the mounting base 33 .

[0176] Alternatively, the temperature measuring tube is directly fixed on the inner container 2 and offset obliquely above the flange 21. In this way, during the dry-burning test, since the temperature measuring tube is closer to the top of the inner container 2, the temperature sensor can detect the temperature of the top of the inner container 2 more timely and effectively.

[0177] In another embodiment of the present application, a thermostatic valve 44 may be provided to achieve constant temperature water discharge. Specifically, the outlet end of the water outlet pipe 42 is provided with a thermostatic valve 44, and the inlet end of the water inlet pipe 41 is provided with a tee. A connecting pipe 45 is provided between the thermostatic valve 44 and the tee.

[0178] Specifically, the thermostatic valve 44 connected to the water outlet pipe 42 is also connected to the tee pipe of the water inlet pipe 41 through the connecting pipe 45. In actual use, when the outlet water temperature of the water outlet pipe 42 is higher than the set temperature of the thermostatic valve 44, part of the cold water flowing into the tee pipe enters the thermostatic valve 44 for automatic adjustment of the water temperature.

[0179] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0180] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present application.

Claims

1. A kitchen water heater, characterized in that: include: The housing comprises a bottom plate and an upper cover, the upper cover being arranged on the bottom plate from top to bottom, a mounting cavity being formed between the upper cover and the bottom plate, and the bottom surface of the bottom plate forming a mounting support surface; An inner liner, the inner liner is located in the mounting cavity and is disposed on the bottom plate, the upper cover covers an upper portion of the inner liner, a foaming space is formed between the upper cover, the bottom plate, and the inner liner, and a foaming layer is formed in the foaming space; An electric heating tube, the electric heating tube being arranged in the inner container; An inlet and outlet pipe group, the inlet and outlet pipe group includes a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are sealed and pass through the inner liner, the water outlet end of the water inlet pipe is located in the inner liner and arranged in the lower area of ​​the inner liner, and the water inlet end of the water outlet pipe is located in the inner liner and arranged in the upper area of ​​the inner liner; the water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe respectively extend to the outside of the upper cover body.

2. The Chubao water heater according to claim 1, characterized in that: The water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe extend laterally outside the upper cover body.

3. The Chubao water heater according to claim 1, characterized in that: An upper flange structure is provided at the edge of the bottom plate, and the lower edge of the upper cover body is wrapped around the outer side of the upper flange structure.

4. The Chubao water heater according to claim 1, characterized in that: The upper cover body is also provided with an inspection port; The housing further comprises a front panel and a mounting lining plate, wherein the mounting lining plate is disposed between the upper cover and the bottom plate, and the mounting lining plate divides the mounting cavity into a first cavity and a second cavity; The inspection port is connected to the first cavity, the inner container is located in the second cavity, and the front panel is detachably arranged on the upper cover and covers the inspection port; The Chubao water heater further includes an electric control board, which is electrically connected to the electric heating tube and is located in the first cavity.

5. The Chubao water heater according to claim 4, characterized in that: The bottom plate is provided with a first retaining rib, and the lower portion of the mounting liner is provided with a clamping groove, in which the first retaining rib is clamped.

6. The Chubao water heater according to claim 4, characterized in that: The top wall of the upper cover body is provided with positioning ribs, and the top of the mounting liner is overlapped on the positioning ribs.

7. The Chubao water heater according to claim 4, characterized in that: The mounting liner is provided with an auxiliary opening; The housing is further provided with a first foam member and a second foam member; the first foam member is provided with a first mounting opening, the second foam member is provided with a second mounting opening and a third mounting opening, and the second mounting opening is arranged above the third mounting opening; The flange on the inner tank passes through the first mounting port and the auxiliary opening in sequence, the first foam part is clamped between the mounting liner and the inner tank, the water outlet pipe passes through the second mounting port, and the water inlet pipe passes through the third mounting port.

8. The Chubao water heater according to claim 4, characterized in that: The lower surface of the bottom plate is provided with a wiring groove, and the wiring groove extends from front to back to the rear side of the housing; The bottom plate is also provided with a wire outlet hole, which is connected to the wiring groove; the power supply cable connected to the electric control board passes through the wire outlet hole and extends out of the rear side of the shell through the wiring groove.

9. The Chubao water heater according to claim 8, characterized in that: The bottom plate is also provided with a wiring pipe, which is arranged vertically and connected to the wire outlet hole, and the power supply cable passes through the wiring pipe.

10. The Chubao water heater according to claim 1, characterized in that: Both sides of the bottom plate are further provided with transport and lifting portions, which are concave structures formed on the bottom surface of the bottom plate.

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