Horizontal kitchen water heater

Abstract

This utility model discloses a horizontal water heater, comprising: an outer shell, the bottom of which forms a mounting support surface; an inner liner disposed within the outer shell; an electric heating element disposed within the inner liner; and an inlet / outlet pipe assembly, comprising an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe sealingly penetrating the inner liner, the outlet end of the inlet pipe located within the inner liner and arranged in the lower region of the inner liner, and the inlet end of the outlet pipe located within the inner liner and arranged in the upper region of the inner liner; wherein, the length dimension of the outer shell is greater than the height dimension of the outer shell. This design increases the water heater's capacity to improve the user experience.

Description

Technical Field

[0001] This utility model belongs to the field of household appliance technology, and in particular relates to a horizontal kitchen water heater. Background Technology

[0002] Currently, horizontal water heaters are common household appliances. They are categorized into electric horizontal water heaters, gas horizontal water heaters, heat pump horizontal water heaters, and solar horizontal water heaters. Electric horizontal water heaters are widely used due to their ease of use. These can be further classified by heating power into storage-type and instantaneous-type electric horizontal water heaters. Storage-type electric horizontal water heaters, equipped with a water tank, offer advantages such as high water output and stable water temperature, making them more popular among families.

[0003] For conventional storage-type electric water heaters (commonly known as "kitchen water heaters"), the small size of the water tank allows for installation within kitchen cabinets. For example, Chinese Patent Publication No. CN 218455286 U describes a small horizontal kitchen water heater, including a shell, an inner tank, and an electric heating element. The inner tank has inlet and outlet pipes located at the top. However, in actual installation and use, due to the limited height of the cabinet, the inner tank's height is reduced to accommodate the inlet and outlet pipe connections, resulting in a smaller overall capacity and impacting the user experience.

[0004] Therefore, the technical problem to be solved by this application is how to design a technology to increase the capacity of a water heater to improve the user experience. Utility Model Content

[0005] This application provides a horizontal kitchen water heater, which increases the capacity of the water heater to improve the user experience.

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

[0007] In one aspect, this application provides a horizontal kitchen water heater, comprising:

[0008] The outer casing, the bottom of which forms a mounting support surface;

[0009] Inner liner, which is disposed within the outer shell;

[0010] An electric heating element is disposed in the inner liner;

[0011] The inlet and outlet pipe assembly includes an inlet pipe and an outlet pipe, which are sealed through the inner tank. The outlet end of the inlet pipe is located in the inner tank and arranged in the lower region of the inner tank, while the inlet end of the outlet pipe is located in the inner tank and arranged in the upper region of the inner tank.

[0012] The length of the outer shell is greater than the height of the outer shell.

[0013] Compared with the prior art, the advantages and positive effects of this application are: by designing the length of the outer shell to be greater than the height of the outer shell, the overall length of the outer shell is longer and the overall height of the outer shell is reduced. In this way, when the outer shell is installed in the cabinet, it is less restricted by the height of the cabinet. The longer length of the outer shell can meet the requirement that the inner liner extends along the length of the outer shell, so that the inner liner of the horizontal kitchen water heater has sufficient length to meet the volume requirements, thereby increasing the capacity of the kitchen water heater and improving the user experience.

[0014] In one embodiment of this application, the inlet end of the water inlet pipe and the outlet end of the water outlet pipe extend out of the outer casing and extend laterally.

[0015] In one embodiment of this application, the water inlet end of the water inlet pipe is distributed on the front surface, rear surface, or side surface of the outer casing;

[0016] The water outlet end of the water outlet pipe is distributed on the front surface, rear surface, or side surface of the outer casing.

[0017] In one embodiment of this application, the inner liner is arranged laterally within the outer shell.

[0018] In one embodiment of this application, the electric heating tube extends laterally and is disposed in the inner liner.

[0019] In one embodiment of this application, the electric heating tube includes a straight support section and a curved heating section, wherein the curved heating section is connected to the straight support section;

[0020] The straight support end is fixedly installed on the inner liner, the curved heating section is offset toward the side wall of the inner liner and arranged on one side of the water inlet pipe, and the curved heating section is located at the bottom of the inner liner.

[0021] In one embodiment of this application, the height of the outer shell is 200mm-500mm.

[0022] In one embodiment of this application, the outer shell includes a base plate and an upper cover, the upper cover is disposed on the base plate from top to bottom, an installation cavity is formed between the upper cover and the base plate, and the bottom surface of the base plate forms an installation support surface;

[0023] The outer shell is also provided with two foam support members, the inner liner is sandwiched between the two foam support members, the upper cover covers the upper part of the inner liner, and a foaming space is formed between the upper cover, the bottom plate, the inner liner and the foam support members, and a foaming layer is formed in the foaming space;

[0024] The inlet end of the water inlet pipe and the outlet end of the water outlet pipe extend to the outside of the upper cover, respectively.

[0025] In one embodiment of this application, the upper cover is provided with an installation notch, which extends to the lower edge of the upper cover.

[0026] The inlet end of the inlet pipe and the outlet end of the outlet pipe are located in the installation notch;

[0027] The outer casing also includes a decorative panel with two mounting openings. The decorative panel is disposed on the upper cover and covers the mounting openings. The inlet end of the water inlet pipe and the outlet end of the water outlet pipe pass through the corresponding mounting openings.

[0028] In one embodiment of this application, an inspection port is further provided on the upper cover;

[0029] The outer casing also includes a front panel and a mounting liner. The mounting liner is disposed between the upper cover and the bottom plate, and the mounting liner divides the mounting cavity into a first cavity and a second cavity.

[0030] The access port is connected to the first cavity, the inner liner is located in the second cavity, and the front panel is detachably mounted on the upper cover and covers the access port.

[0031] The horizontal kitchen water heater also includes an electronic control board, which is electrically connected to the electric heating element and is located in the first cavity. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is one of the structural schematic diagrams of an embodiment of the horizontal water heater of this application;

[0034] Figure 2 This is a second structural schematic diagram of an embodiment of a horizontal water heater of this application;

[0035] Figure 3 This is a cross-sectional view of an embodiment of the horizontal kitchen water heater of this application;

[0036] Figure 4 for Figure 3 A magnified view of a portion of region A in the middle;

[0037] Figure 5 for Figure 3 A magnified view of a portion of region B in the middle;

[0038] Figure 6 for Figure 1 Exploded view of a horizontal kitchen water heater;

[0039] Figure 7 for Figure 6 Schematic diagram of the midsole plate;

[0040] Figure 8 for Figure 6 Schematic diagram of the upper and middle cover structure;

[0041] Figure 9 for Figure 6 Schematic diagram of the inner liner

[0042] Figure 10 for Figure 6 A cross-sectional view of the assembly of the inner liner, inlet and outlet pipes, and electric heating element;

[0043] Figure 11 for Figure 10 Schematic diagram of the structure of the inner and outer liner tubes;

[0044] Figure 12 This is the third structural schematic diagram of an embodiment of the horizontal water heater of this application;

[0045] Figure 13 for Figure 12 C-axis sectional view;

[0046] Figure 14 This is a schematic diagram of a horizontal kitchen water heater embodiment of this application in a maintenance state.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Outer shell; 11. Base plate; 12. Upper cover; 13. First foaming component; 14. Second foaming component; 15. Electrical control board; 16. Decorative panel; 17. Front panel; 18. Mounting liner; 19. Support surface;

[0049] 111. First baffle; 112. Second baffle; 113. Positioning groove; 114. Upward flange structure; 115. Cable routing groove; 116. Cable outlet hole; 117. Cable routing tube; 118. Cable blocking part; 119. Transport and lifting part; 121. Mounting notch; 122. Positioning baffle; 161. Mounting through port; 181. Slot; 182. Auxiliary opening; 131. First mounting port; 141. Second mounting port; 142. Third mounting port; 143. Positioning mating part; 151. Knob;

[0050] 2. Inner liner; 21. Flange; 22. First mounting pipe; 23. Second mounting pipe; 24. Heat insulation pad; 26. Temperature measuring tube; 241. Positioning part;

[0051] 3. Electric heating element; 31. Straight support section; 32. Bending heating section; 33. Mounting base;

[0052] 4. Inlet and outlet pipe assembly; 41. Inlet pipe; 42. Outlet pipe; 43. Outer liner pipe; 44. Thermostatic valve; 45. Connecting pipe;

[0053] 431. Second bend; 432. Outward flange structure. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] It should be noted that in the description of this application, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0059] A horizontal water heater uses electricity as its primary energy source. The high-temperature heat generated after being powered on directly heats the water stored in the water heater to produce hot water.

[0060] A horizontal kitchen water heater typically consists of a water tank, an electric heating element, and an electronic control board. The water tank has a water storage cavity to store water to be heated. The electric heating element is inserted into the water storage cavity. The electronic control board is used to control the on / off operation of the electric heating element so that the water in the tank is heated to the set temperature.

[0061] For horizontal kitchen water heaters, the water tank generally consists of an outer shell and an inner liner, with an insulation layer between them. The outer shell is usually made of plastic to meet the requirements of aesthetic and diverse designs; the inner liner can be made of metal or plastic, depending on the needs.

[0062] In addition, the insulation layer formed between the outer shell and the inner liner is commonly made of materials such as asbestos, sponge, foam plastic, and polyurethane foam. In conventional technology, foaming is usually used to form the insulation layer in order to achieve good insulation effect.

[0063] For water tanks with metal inner liner, corrosion can easily occur inside due to water quality. Therefore, magnesium rods are installed on the water tank and inserted into the water storage cavity inside the tank.

[0064] Magnesium has the lowest electrochemical potential among metals and is physiologically non-toxic. Therefore, it is ideal for making magnesium rods to protect the inner liner. The size of the magnesium rod directly affects the duration and effectiveness of the protection; the larger the magnesium rod, the better the protection and the longer the protection time.

[0065] The water tank is also equipped with an inlet pipe and an outlet pipe. The inlet pipe is used to deliver cold water into the water storage cavity formed inside the water tank, while the hot water in the water storage cavity is output from the outlet pipe.

[0066] The control board is used to receive detection signals from relevant sensors (such as water temperature sensors and flow sensors) and control the power supply to and from the electric heating components.

[0067] When the horizontal water heater is working, the electric heating element is powered on by the control board. When the water temperature in the tank reaches the set value, the electric heating element is powered off by the control board.

[0068] Example 1, as Figures 1-14 As shown, this embodiment provides a horizontal kitchen water heater, including:

[0069] The outer casing 1 has a mounting support surface 19 formed at its bottom;

[0070] Inner liner 2, which is disposed in the outer shell 1;

[0071] An electric heating element 3 is disposed in the inner liner 2;

[0072] The inlet and outlet pipe assembly 4 includes an inlet pipe 41 and an outlet pipe 42, which are sealed through the inner liner 2.

[0073] Specifically, in one embodiment of this application, a horizontal kitchen water heater has an installation support surface 19 formed at the bottom of its outer shell 1. When installed in a user's home, it is placed in a cabinet through the installation support surface 19 to complete the installation without the need for hanging.

[0074] In order to reduce the overall height of the horizontal water heater and increase the volume of the inner tank 2, the installation method of the inner tank 2 and the inlet / outlet pipe assembly 4 can be improved as follows.

[0075] The length of the outer casing 1 is greater than the height of the outer casing 1.

[0076] Specifically, the overall height of the outer shell 1 is smaller than its length. This ensures that the height of the outer shell 1 meets the installation requirements of the cabinet when it is installed inside the user's home. At the same time, the length of the outer shell 1 can make full use of the depth space of the cabinet, so that the interior space of the outer shell 1 is not limited by height. The longer outer shell 1 allows the inner liner 2 to extend along the length of the outer shell 1, ensuring that the inner liner 2 has sufficient volume.

[0077] In one embodiment, since the horizontal kitchen water heater is installed in the cabinet of the user's home, the height of the outer casing 1 can be 200mm-500mm, to distinguish it from the conventional wall-mounted horizontal kitchen water heater.

[0078] In one embodiment, the inner liner 2 is arranged laterally within the outer shell 1.

[0079] Specifically, in order to ensure that the inner liner 2 has sufficient volume to store water to meet the water storage capacity requirements of the horizontal water heater and at the same time meet the requirement of reducing the height of the outer shell 1, the inner liner 2 is placed horizontally in the outer shell 1 to increase the length of the inner liner 2 and reduce its height.

[0080] In addition, the electric heating element 3 is disposed in the inner liner 2.

[0081] Specifically, in order to meet the requirement of uniform heating of the water in the inner tank 2, the electric heating tube 3 extends along the length of the inner tank 2 and extends laterally.

[0082] The water outlet end of the water inlet pipe 41 is located in the inner liner 2 and arranged in the lower region of the inner liner 2, while the water inlet end of the water outlet pipe 42 is located in the inner liner 2 and arranged in the upper region of the inner liner 2.

[0083] The inlet end of the water inlet pipe 41 and the outlet end of the water outlet pipe 42 extend to the outside of the outer casing 1, respectively. The inlet end of the water inlet pipe and the outlet end of the water outlet pipe are distributed on the outer side wall of the outer casing, which is vertically arranged above the mounting support surface.

[0084] Specifically, the inlet pipe 41 and the outlet pipe 42 extend from the outer shell 1 to the outside of the outer shell 1. The inlet end of the inlet pipe and the outlet end of the outlet pipe are distributed on the outer side wall of the outer shell 1. In this way, when connecting to the external water pipe in the cabinet, the space outside the outer shell 1 can be used to meet the requirements of the water pipe connection, so as to facilitate the connection with the water pipe in the cabinet without occupying the height space.

[0085] For example, the water inlet end of the water inlet pipe is distributed on the front surface, rear surface, or side surface of the housing.

[0086] Alternatively, the water outlet end of the water outlet pipe is distributed on the front surface, rear surface, or side surface of the outer casing.

[0087] In one embodiment, the inlet end of the water inlet pipe 41 and the outlet end of the water outlet pipe 42 extend out of the outer casing 1 and extend laterally.

[0088] Specifically, the inlet end of the water inlet pipe 41 is in a horizontally extending state to facilitate connection with the water pipe in the cabinet without occupying height space, and the outlet end of the water outlet pipe 42 is also in a horizontally extending state to facilitate connection with the water pipe in the cabinet without occupying height space.

[0089] In this way, on the one hand, for the horizontal water heater, as long as the top height of the outer shell 1 meets the installation requirements, the horizontal water heater can be installed into the cabinet without being restricted by the connection pipe 45 of the inlet pipe 41 and the outlet pipe 42, which makes installation more convenient and more versatile; on the other hand, since the overall height of the outer shell 1 is not restricted by the height position of the inlet and outlet pipes 42, the diameter of the inner tank 2 inside the outer shell 1 can be further increased. With the length of the outer shell 1 remaining unchanged, the volume of the inner tank 2 can be effectively increased.

[0090] By arranging the inner liner 2 horizontally, and extending the inlet end of the water inlet pipe 41 and the outlet end of the water outlet pipe 42 horizontally to the outside of the outer shell 1, the height space inside the cabinet can be increased without occupying space during the connection with external pipes. This effectively increases the diameter of the inner liner 2. Normally, the height space inside the cabinet is limited, but it has sufficient depth to meet the installation requirements of the horizontal water heater. This allows the inner liner 2 of the horizontal water heater to have sufficient length. With the same length of inner liner 2, increasing the diameter of the inner liner 2 can effectively increase the water heater's capacity and improve the user experience.

[0091] 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 horizontal 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.

[0092] Specifically, the water outlet pipe 42 is located at the water inlet end of the inner tank 2 to form a first elbow. The opening of the first elbow is located at the top of the inner tank 2. In this way, hot water can be output from the top of the inner tank 2 during the hot water output process to improve the hot water output rate.

[0093] Meanwhile, because the outlet pipe 42 has a first bend, the water inlet position of the outlet pipe 42 can be arranged to the maximum extent in the top area of ​​the inner liner 2. In this way, the outlet pipe 42 does not need to be as close as possible to the upper wall of the inner liner 2, thereby solving the technical problem of low welding quality caused by a larger intersection line between the outlet pipe 42 and the inner liner 2 and more burrs.

[0094] Similarly, the requirement to increase the hot water output rate can also be met by using an outer liner pipe 43 to cover the water outlet pipe 42. Specifically, the outer liner pipe 43 is located in the inner tank 2, and the free end of the outer liner pipe 43 bends upward to form a second elbow 431, the opening of the second elbow 431 being close to the top wall of the inner tank 2.

[0095] Specifically, an outer liner 43 is fitted around the outlet pipe 42. The outer liner 43 extends into the free end of the inner tank 2, forming a second bend 431. The opening of the second bend 431 is close to the top wall of the inner tank 2. In this way, during the process of outputting hot water through the outlet pipe 42, the hot water at the top of the inner tank 2 flows into the outer liner 43 via the second bend 431, and then flows into the outlet pipe 42 through the inlet end of the outlet pipe 42 for transportation and output to the outside of the outer shell 1.

[0096] Meanwhile, because the outer liner pipe 43 has a second bend 431, the water inlet position of the second bend 431 can be arranged to the maximum extent in the top area of ​​the inner liner 2. In this way, the outlet pipe 42 does not need to be as close as possible to the upper wall of the inner liner 2, thereby solving the technical problem of low welding quality caused by a larger intersection line between the outlet pipe 42 and the inner liner 2 and more burrs.

[0097] Furthermore, in order to facilitate the installation of the outer liner tube 43, the outer end of the outer liner tube 43 is provided with an outward flange structure 432, which overlaps the outer side of the inner liner 2.

[0098] Specifically, during the assembly process, the outer liner tube 43 is first inserted into the inner liner 2. After the outer liner tube 43 is inserted into place, it is positioned against the outer surface of the inner liner 2 by the outer flange structure 432 to meet the requirements for precise installation of the outer liner tube 43.

[0099] In one embodiment of this application, a flange 21 is provided at one end of the inner liner 2, and a mounting base 33 is provided at the mounting end of the electric heating tube 3, with the mounting base 33 disposed on the flange 21.

[0100] The other end of the inner liner 2 is provided with a first mounting pipe 22 and a second mounting pipe 23. The first mounting pipe 22 is arranged above the second mounting pipe 23. The first mounting pipe 22 and the second mounting pipe 23 are respectively welded to the inner liner 2 and respectively communicate with the inner liner 2. The water outlet pipe 42 is sealed and inserted into the first mounting pipe 22, and the water inlet pipe 41 is sealed and inserted into the second mounting pipe 23.

[0101] Specifically, to facilitate the installation of the inlet / outlet pipe assembly 4 and the electric heating element 3, a flange 21 is provided at one end of the inner tank 2 to meet the installation requirements of the electric heating element 3. A first mounting pipe 22 and a second mounting pipe 23 are provided at the other end of the inner tank 2, and are welded to the inner tank 2. This satisfies the installation requirements of the inlet pipe 41 and the outlet pipe 42.

[0102] In another embodiment of this application, the outer shell 1 is further provided with two foam support members. The two foam support members are arranged opposite to each other and vertically disposed in the outer shell 1. The sidewalls of the foam support members form concave surfaces, and the concave surfaces match the end contours of the inner liner 2.

[0103] The inner liner 2 is sandwiched between the two foamed support members, and a foamed layer is provided between the outer shell 1 and the inner liner 2. The foamed layer is arranged between the two foamed support members.

[0104] Specifically, since the inner pot 2 of the horizontal water heater is arranged horizontally, foam support components are provided at both ends of the inner pot 2 to provide good support and insulation. The concave surface formed by the foam support component matches the end face of the corresponding end of the inner pot 2, allowing the end of the inner pot 2 to fit tightly against the concave surface of the foam support component, thereby improving assembly reliability. In addition, the foam support component also serves to insulate the inner pot 2 at both ends.

[0105] After the ends of the inner liner 2 are supported by foamed support members and provided with thermal insulation, in order to improve the overall thermal insulation performance of the inner liner 2, foamed material is also filled between the two foamed support members. The foamed material forms a foamed layer between the inner liner 2 and the outer shell 1 to improve the thermal insulation performance of the inner liner 2.

[0106] Furthermore, since the two ends of the inner liner 2 have different structural forms, in order to facilitate assembly, the two foamed support components are divided into a first foamed component 13 and a second foamed component 14.

[0107] The first foaming component 13 is provided with a first mounting port 131, and the flange 21 provided on the inner liner 2 passes through the first mounting port 131;

[0108] The second foaming component 14 is provided with a second mounting port 141 and a third mounting port 142. The second mounting port 141 is arranged above the third mounting port 142. 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.

[0109] Specifically, the inner liner 2 is provided with the end of the flange 21 assembled onto the first foaming component 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 foaming component 13. The flange 21 passes through the first mounting port 131 to facilitate circuit wiring.

[0110] For the other end of the inner liner 2, an inlet pipe 41 and an outlet pipe 42 need to be installed. For this purpose, a second installation port 141 and a third installation port 142 are provided on the second foaming component 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.

[0111] Furthermore, in order to improve the installation accuracy of the foam support and reduce the overflow and leakage of foam material, the bottom of the outer shell 1 is provided with a first baffle 111 and a second baffle 112.

[0112] The first foaming component 13 is arranged on the rear side of the first baffle 111, and the second foaming component 14 is arranged on the rear side of the second baffle 111.

[0113] Specifically, the first baffle 111 and the second baffle 112 can limit the position of the first foaming component 13 and the second foaming component 14 to ensure that the first foaming component 13 and the second foaming component 14 are installed in place. In addition, during the foaming process, the bottom of the first baffle 111 and the first foaming component 13 form an overlapping area. Similarly, the bottom of the second baffle 112 and the second foaming component 14 form an overlapping area, and the overlapping area is used to prevent the foaming material from overflowing.

[0114] 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 bracket is also provided at the bottom of the inner liner 2, which is fixedly connected to the outer shell 1.

[0115] Specifically, during assembly, on the one hand, the two ends of the inner liner 2 are supported by the first foaming component 13 and the second foaming component 14; on the other hand, the mounting base at the bottom of the inner liner 2 can be directly fixed to the bottom plate 11 of the outer shell 1 by screws or other means, so that the position between the inner liner 2 and the bottom plate 11 of the outer shell 1 is stable and immovable. In this way, during the foaming process, the force generated by the foaming material between the inner liner 2 and the outer shell 1 will not affect the position of the inner liner 2, thus improving the quality of the product.

[0116] The mounting bracket can be fixedly connected to the inner liner 2 by welding.

[0117] Furthermore, in order to improve assembly accuracy and ease of assembly, a positioning groove 113 is provided at the bottom of the outer shell 1, and the mounting base is located in the positioning groove 113.

[0118] Specifically, the bottom plate 11 of the outer shell 1 is also provided with an installation groove. When the inner liner 2 is assembled onto the bottom plate 11 of the outer shell 1, the installation groove on the bottom plate 11 can accommodate the mounting base at the bottom of the inner liner 2, so that pre-assembly can be achieved through the cooperation of the mounting base and the installation groove, thereby improving the assembly accuracy and assembly convenience.

[0119] In some embodiments of this 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 outer casing 1 in various forms, for example:

[0120] The inlet end of the water inlet pipe 41 and the outlet end of the water outlet pipe 42 are arranged at the rear end of the outer casing 1. Alternatively, the inlet end of the water inlet pipe 41 and the outlet end of the water outlet pipe 42 are arranged on the side of the outer casing 1.

[0121] Specifically, the example of arranging the water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 at the rear end of the outer casing 1 will be used for illustration.

[0122] The inlet end of the water inlet pipe 41 and the outlet end of the water outlet pipe 42 are both located at the rear end of the outer casing 1. When connecting the water pipes, the water pipes in the user's home are connected at the rear of the outer casing 1. After connection, the pipes are located at the rear of the outer casing 1 and do not occupy the space at the top of the outer casing 1.

[0123] In another embodiment, in order to facilitate the user's operation of the horizontal kitchen water heater for temperature adjustment and to facilitate the maintenance of electrical components by operators later, an electrical compartment is provided at the front end of the outer casing 1, and an electrical control board 15 is provided in the electrical compartment.

[0124] Specifically, an electrical compartment is provided at the front end of the housing 1 to install the electronic control board 15. Correspondingly, the thermostat connected to the electronic control board 15 is also located in the electrical compartment, and the knob 151 for adjusting the thermostat is located on the outside of the front end of the housing 1.

[0125] In this way, after opening the cabinet, the user can adjust the heating temperature using the knob 151 on the front of the outer casing 1. Simultaneously, when maintenance is required, the operator can also open the cabinet and perform maintenance at the front of the outer casing 1.

[0126] In Example 2, since the inner liner 2 is arranged horizontally in the outer shell 1, and it is also necessary to meet the requirement that the inlet and outlet water pipes 42 extend laterally to the outside of the outer shell 1 and meet the requirements of horizontal pipe connection, the outer shell 1 is structurally improved as follows.

[0127] like Figures 3-8 As shown, the outer shell 1 includes a base plate 11 and an upper cover 12. The upper cover 12 is disposed on the base plate 11 from top to bottom. An installation cavity is formed between the upper cover 12 and the base plate 11. The bottom surface of the base plate 11 forms an installation support surface 19. The installation support surface 19 is configured to place the horizontal kitchen water heater on the bottom surface of the cabinet inside the cabinet.

[0128] The inner liner 2 is located in the mounting cavity and is disposed on the base plate 11. The upper cover 12 covers the upper part of the inner liner 2. A foaming space is formed between the upper cover 12, the base plate 11 and the inner liner 2, and a foaming layer is formed in the foaming space.

[0129] The inlet end of the water inlet pipe 41 and the outlet end of the water outlet pipe 42 extend outward from the outside of the upper cover 12 and extend laterally.

[0130] Specifically, the outer shell 1 adopts a split structure design, which includes a bottom plate 11 and an upper cover 12. The bottom plate 11 is used for pre-assembly of the inner liner 2, the first foaming component 13 and the second foaming component 14. Then, the upper cover 12 is assembled from the top down onto the bottom plate 11 to cover the inner liner 2, the first foaming component 13 and the second foaming component 14 pre-assembled on the bottom plate 11.

[0131] After the upper cover 12 is installed on the base plate 11, a foaming space is formed between the upper cover 12, the base plate 11, the inner liner 2, the first foaming component 13 and the second foaming component 14, and then foaming material is filled into the foaming space to form a foaming layer.

[0132] The outer shell 1 is formed by the upper cover 12 and the base 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 base plate 11. Then, the upper cover is installed on the base plate 11 from above and covers the inner liner 2. The outer shell 1 adopts a split design. During assembly, the upper cover 12 is assembled from top to bottom, which reduces the assembly difficulty and improves the assembly efficiency.

[0133] In one embodiment, in order to improve the connection reliability between the upper cover 12 and the base plate 11, the edge of the base plate 11 is provided with an upper flange structure 114, and the lower edge of the upper cover 12 wraps around the outside of the upper flange structure 114.

[0134] Specifically, when the upper cover 12 is assembled with the base plate 11, the upturned edge structure 114 formed by the edge of the base plate 11 is inserted into the inner edge of the upper cover 12 so that the upturned edge abuts against the inner wall of the upper cover 12, so that the base plate 11 and the upper cover 12 can be pre-assembled together.

[0135] The upper cover 12 has a protruding connecting part on its inner wall. The connecting part has a threaded hole. The screw passes through the mounting hole on the base plate 11 and is threaded into the threaded hole so that the base plate 11 and the upper cover 12 are fixedly connected together.

[0136] In another embodiment, the upper cover 12 is provided with an installation notch 121, which extends to the lower edge of the upper cover 12;

[0137] The inlet end of the inlet pipe 41 and the outlet end of the outlet pipe 42 are located in the installation notch 121;

[0138] The outer casing 1 also includes a decorative panel 16, which has two mounting openings 161. The decorative panel 16 is disposed on the upper cover 12 and covers the mounting notch 121. The water inlet end of the water inlet pipe 41 and the water outlet end of the water outlet pipe 42 pass through the corresponding mounting openings 161.

[0139] Specifically, to effectively reduce assembly difficulty, the inlet pipe 41 and outlet pipe 42 connected to the inner liner 2 need to extend to the outside of the upper cover 12, by providing an installation notch 121 on the upper cover 12. During the assembly of the upper cover 12 to the base plate 11, the installation notch 121 on the upper cover 12 will avoid the inlet pipe 41 and outlet pipe 42 extending from the inner liner 2, thus allowing the operator to complete the assembly of the upper cover 12 without adjusting its posture, simply by placing the upper cover 12 vertically on the base plate 11. After the upper cover 12 is assembled to the base plate 11, the inlet pipe 41 and outlet pipe 42 will be located in the installation notch 121. Then, the decorative panel 16 is installed on the upper cover 12 to cover the installation notch 121, and the inlet pipe 41 and outlet pipe 42 will be inserted into the corresponding installation openings 161.

[0140] The design of the mounting notch 121 not only meets the horizontal installation requirements of the inlet pipe 41 and the outlet pipe 42, but also effectively reduces the assembly difficulty and improves assembly efficiency. The decorative panel 16 is installed on the upper cover 12 in a basically vertical arrangement. The mounting opening 161 on the decorative panel 16 can meet the installation requirements of the inlet pipe 41 and the outlet pipe 42. During assembly, after the decorative panel 16 is adjusted to the correct position, the inlet pipe 41 and the outlet pipe 42 are inserted into the corresponding mounting opening 161, and the assembly is completed.

[0141] Furthermore, the decorative panel 16 is provided with a claw, and the upper cover 12 is provided with a locking hole, which is arranged at the mounting notch 121;

[0142] The claw is engaged in the card hole.

[0143] Specifically, for the decorative panel 16, in order to improve assembly efficiency and achieve screwless fixing, a clip can be provided on the decorative panel 16. The decorative panel 16 is inserted into the clip hole by the clip to realize the decorative panel 16 being snapped onto the upper cover 12.

[0144] In another embodiment, the upper cover 12 is also provided with an inspection port;

[0145] The outer casing 1 also includes a front panel 17 and a mounting liner 18. 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.

[0146] The access port is connected to the first cavity, the inner liner 2 is located in the second cavity, and the front panel 17 is detachably mounted on the upper cover 12 and covers the access port.

[0147] The horizontal kitchen water heater also includes an electrical control board 15, which is electrically connected to the electric heating tube 3 and is located in the first cavity; the first cavity forms an electrical chamber.

[0148] Specifically, to facilitate the installation of electrical components such as the control board 15 in the electrical compartment, the outer casing 1 also includes a front panel 17 and a mounting plate 18. The mounting plate 18 divides the mounting cavity into a first cavity and a second cavity, thereby enabling independent installation of the inner liner 2 and the control board 15. Furthermore, the front panel 17 is detachably mounted on the upper cover 12, making it easier for maintenance personnel to open the front panel 17 to expose the control board 15 and other electrical components inside the electrical compartment during future maintenance.

[0149] Furthermore, a first baffle 111 is provided on the base plate 11, and a slot 181 is provided at the lower part of the mounting liner 18, wherein the first baffle 111 is engaged in the slot 181.

[0150] Specifically, in order to facilitate the installation and positioning of the mounting liner 18, a slot 181 is provided at the lower part of the mounting liner 18. The mounting liner 18 is snapped into the first baffle 111 provided on the bottom plate 11 through the slot 181, so as to realize the pre-assembly of the mounting liner 18 onto the bottom plate 11.

[0151] Correspondingly, the first foam component 13 will be attached to the mounting plate 18, and the mounting plate 18 will be used to position and install the first foam component 13.

[0152] Furthermore, in order to position the top of the mounting liner 18, the top wall of the upper cover 12 is provided with a positioning baffle 122, and the top of the mounting liner 18 overlaps the positioning baffle 122.

[0153] Specifically, after the upper cover 12 is assembled onto the base plate 11, the top of the mounting liner 18 will overlap the positioning baffle 122. After the first foaming component 13, the second foaming component 14 and the inner liner 2 are assembled onto the base plate 11, the first foaming component 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 baffle 122.

[0154] Furthermore, the mounting liner 18 is provided with an auxiliary opening 182; the outer shell 1 is also provided with a first foaming component 13 and a second foaming component 14; the first foaming component 13 is provided with a first mounting port 131, and the second foaming component 14 is provided with a second mounting port 141 and a third mounting port 142, with the second mounting port 141 arranged above the third mounting port 142; the flange 21 on the inner liner 2 passes through the first mounting port 131 and the auxiliary opening 182 in sequence, the first foaming component 13 is sandwiched between the mounting liner 18 and the inner liner 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.

[0155] Specifically, the flange 21 on the inner liner 2 passes through the first mounting port 131 on the first foaming element 13 and is located in the electrical compartment via the auxiliary opening 182, so that the electric heating tube 3 on the flange 21 can be connected to the electrical control board 15 in the electrical compartment via a cable.

[0156] In embodiment three, in order to improve safety and reliability, the electrical compartment is located 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 located at the rear end of the housing 1.

[0157] like Figures 1-7 , Figure 14 As shown, by separating the electrical compartment and the inlet / outlet water pipes 42, the electrical compartment is located at the front end of the housing 1 for easy user operation, while the inlet / outlet water pipes 42 are completely isolated from the electrical compartment. This can prevent water leakage at the end connection of the inlet / outlet water pipes 42, which could damage the electrical components in the electrical compartment, thereby improving the reliability of the water heater.

[0158] Since the electrical compartment is located at the front end of the outer casing 1, the power supply cable needs to be connected to the electrical control board 15 in the electrical compartment. In order to achieve concealed wiring, the lower surface of the base plate 11 is provided with a wiring groove 115, which extends from front to back to the rear side of the outer casing 1.

[0159] The base plate 11 is also provided with a cable outlet hole 116, which is connected to the cable routing groove 115; the power supply cable connected to the electronic control board 15 passes through the cable outlet hole 116 and extends out to the rear side of the housing 1 via the cable routing groove 115.

[0160] Specifically, an electrical compartment is formed at the front end of the housing 1 to mount 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 compartment, and finally passes out from the wiring groove 115 to the rear end of the housing 1.

[0161] In this way, after the horizontal kitchen water heater is installed in the cabinet of the user's home, the power supply cable will be arranged on the back of the outer casing 1. This way, there are no cables leading out from the front of the outer casing 1, which is more conducive to optimizing the appearance.

[0162] Furthermore, a cable routing conduit 117 is also provided on the base plate 11. The cable routing conduit 117 is arranged vertically and connects to the cable outlet 116. The power supply cable passes through the cable routing conduit 117.

[0163] Specifically, since the horizontal water heater is placed inside the cabinet, when water overflows from the sink above the cabinet, causing water to accumulate at the bottom of the cabinet containing the outer casing 1, the water will enter the outlet hole 116 through the wiring groove 115. Furthermore, because the upper surface of the base plate 11 is also equipped with a vertically arranged wiring conduit 117, and the height of the wiring conduit 117 is higher than the upper surface of the base plate 11, even if there is water inside the cabinet, the water level will not exceed the height of the top opening of the wiring conduit 117, thus preventing water from entering the appliance compartment through the outlet hole 116 and further improving reliability.

[0164] In another embodiment, the base plate 11 is further provided with a wire blocking part 118, which extends perpendicular to the length direction of the wire routing groove 115, and the free end of the wire blocking part 118 forms a gap with the groove wall of the wire routing groove 115.

[0165] Specifically, the wire blocking part 118 is provided on one edge of the wire routing groove 115 and extends toward the other edge of the wire routing groove 115. A gap is formed between the free end of the wire blocking part 118 and the other edge of the wire routing groove 115. The distance of this gap is smaller than the diameter of the power supply cable, and it satisfies the requirement that the power supply cable can enter the wire routing groove 115 through the gap after being squeezed and deformed.

[0166] In one embodiment, the base plate 11 is further provided with a transport lifting part 119 on both sides, and the transport lifting part 119 is an upward concave structure formed on the bottom surface of the base plate 11.

[0167] Specifically, to facilitate the handling of the horizontal water heater by operators, a lifting part 119 can be provided on the base plate 11. The lifting part 119 is formed on the base plate 11 and is concave upward. During handling, the user can insert their hand into the lifting part 119 to lift and move the horizontal water heater.

[0168] Example 4: For horizontal water heaters, in order to reduce the overall height while still meeting the requirement of efficient heating of the electric heating element 3 in the inner tank 2, the following structural and installation improvements are made to the electric heating element 3 to meet the installation requirements of the water inlet pipe 41 and the water outlet pipe 42 being arranged horizontally in the inner tank 2, and to ensure that the electric heating element 3 does not interfere with the installation of the water inlet pipe 41 and meets the requirement of effective heating.

[0169] like Figures 10-13 As shown, the electric heating tube 3 includes a straight support section 31 and a bent heating section 32, wherein the bent heating section 32 is connected to the straight support section 31;

[0170] The straight support end is fixedly installed 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. The curved heating section 32 is located at the bottom of the inner liner 2.

[0171] Specifically, the end of the straight support section 31 is fixed to the mounting base 33, so as to be fixedly mounted on the flange 21 of the inner tank 2 via the mounting base 33. The straight support section 31 can support the curved heating section 32. The curved heating section 32 is arranged in the lower part of the inner tank 2 by means of its own curved extension structure, so as to heat the water from the bottom of the inner tank 2 by means of the curved heating section 32 to improve the heating efficiency of the water in the inner tank 2.

[0172] The curved heating section 32 is arranged near the bottom area of ​​the inner liner 2.

[0173] In addition, to avoid interference with the bottom water inlet pipe 41, the curved heating section 32 is offset to one side of the inner tank 2. In this way, although both the electric heating tube 3 and the water inlet pipe 41 are arranged laterally in the inner tank 2, the offset installation of the electric heating tube 3 can avoid installation interference and ensure heating efficiency.

[0174] Furthermore, in order to improve the hot water output rate and achieve instant hot 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.

[0175] Specifically, for the electric heating tube 3, it can also be provided with an extended heating section that extends upward and is 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 hot water supply.

[0176] The extended heating section can be connected to the curved heating section 32 and extend upward from the curved heating section 32 to the 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 its end fixedly mounted on the mounting base 33.

[0177] In addition, the extended heating section is also wrapped around the periphery of the water outlet pipe 42.

[0178] Specifically, the extended heating section can be wrapped around the outside of the water outlet pipe 42 to increase the overall length of the extended heating section, thereby improving heating efficiency and heating speed.

[0179] In some embodiments of this application, a heat insulation pad 24 is further provided between the inner liner 2 and the foam support member.

[0180] Specifically, because the inner liner 2 is horizontally arranged and has a relatively small overall height, the foamed support at the ends of the inner liner 2 is tightly attached to it. During the dry-burning test, the temperature at the top of the inner liner 2 rises rapidly, reaching 200℃ within a short time. The foamed support is typically made of foam, which is easily affected by high temperatures and may melt.

[0181] The heat insulation pad 24 is made of ABS plastic or polystyrene and other heat insulation materials. The heat insulation pad 24 has good mechanical properties and structural stability to better meet the requirements of ready-made installation. There are no restrictions on the material of the heat insulation pad 24.

[0182] Therefore, a heat insulation pad 24 is provided at at least one end of the inner liner 2 to protect the foam support.

[0183] Normally, the electric heating tubes 3 distributed at the flange 21 of the inner liner 2 are straight support sections 31, which generate less heat than the curved heating sections 32. The curved heating sections 32 generate more heat because they are close to the positions where the water inlet pipe 41 and water outlet pipe 42 are installed and fixed on the inner liner 2. Therefore, at least a heat insulation pad 24 is provided between the inner liner 2 and the second foaming component 14.

[0184] Furthermore, to facilitate the installation of the positioning heat insulation pad 24, the heat insulation pad 24 can be bonded to the outer surface of the inner liner 2.

[0185] Alternatively, the heat insulation pad 24 is provided with a positioning part 241, and correspondingly, the second foaming part 14 is provided with a positioning mating part 143.

[0186] Specifically, during the actual assembly process, the heat insulation pad 24 will be attached to the end of the inner liner 2 where the water inlet pipe and the water outlet pipe are located, and the inner liner 2 will be sandwiched between the first foaming component 13 and the second foaming component 14. When the inner liner 2 is assembled between the first foaming component 13 and the second foaming component 14, the positioning part 241 of the heat insulation pad 24 cooperates with the positioning mating part 143 on the second foaming component 14 to position the heat insulation pad 24, so as to ensure that the heat insulation pad 24 can be accurately positioned, thereby playing a good heat insulation role in the position of the inner liner 2 that needs heat insulation, and playing a role in heat insulation protection for the second foaming component 14.

[0187] The positioning part 241 can be a positioning protrusion, and the corresponding positioning mating part 143 is a positioning groove formed on the second foaming part 14. The positioning protrusion is inserted into the positioning groove to realize the positioning and installation of the heat insulation pad 24.

[0188] Alternatively, a through-hole (unmarked) is provided on the heat insulation pad 24, and an inlet pipe 41 and an outlet pipe 42 are provided on the inner liner, with the inlet pipe 41 or the outlet pipe 42 inserted into the through-hole.

[0189] Specifically, the heat insulation pad 24 is positioned and installed by cooperating with the water inlet pipe 41 or the water outlet pipe 42 through the through-hole on the heat insulation pad 24.

[0190] Alternatively, the heat insulation pad 24 is adhered to the inner liner 2.

[0191] Specifically, the heat insulation pad 24 is bonded to the inner liner 2, making the connection between the two more secure.

[0192] Preferably, the heat insulation pad 24 covers the recessed surface of the second foam 14, thereby completely isolating the second foam 14 from the inner liner 2.

[0193] In another embodiment of this application, the horizontal kitchen water heater further includes a temperature sensing component, which includes a temperature measuring tube 26 and a temperature sensor, wherein the temperature measuring tube 26 is disposed at the end of the inner liner 2.

[0194] Specifically, the temperature sensing component extends into the inner tank 2 through a temperature measuring tube to measure the water temperature in the inner tank 2 using a temperature sensor.

[0195] Specifically, the temperature measuring tube can be fixed on the mounting base 33 for support during installation.

[0196] Alternatively, the temperature sensing tube can be directly fixed to the inner liner 2 and positioned obliquely above the flange 21. In this way, during the dry-burning test, because the temperature sensing tube is closer to the top of the inner liner 2, the temperature sensor can detect the temperature of the top of the inner liner 2 more promptly and effectively.

[0197] In another embodiment of this application, a thermostatic valve 44 may be configured to achieve constant temperature water output. Specifically, a thermostatic valve 44 is also provided at the outlet end of the water outlet pipe 42, and a T-junction pipe is also provided at the inlet end of the water inlet pipe 41; a connecting pipe 45 is also provided between the thermostatic valve 44 and the T-junction pipe.

[0198] Specifically, the thermostatic valve 44 connected to the outlet pipe 42 is also connected to the tee pipe of the inlet pipe 41 through the connecting pipe 45. In actual use, when the outlet water temperature of the outlet pipe 42 is higher than the set temperature of the thermostatic valve 44, part of the cold water flowing in through the tee pipe enters the thermostatic valve 44 for automatic water temperature adjustment.

[0199] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0200] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed in this application.

Claims

1. A horizontal kitchen water heater, characterized in that, include: The outer casing, the bottom of which forms a mounting support surface; Inner liner, which is disposed within the outer shell; An electric heating element is disposed in the inner liner; The inlet and outlet pipe assembly includes an inlet pipe and an outlet pipe, which are sealed through the inner tank. The outlet end of the inlet pipe is located in the inner tank and arranged in the lower region of the inner tank, while the inlet end of the outlet pipe is located in the inner tank and arranged in the upper region of the inner tank. The length of the outer shell is greater than the height of the outer shell.

2. The horizontal kitchen water heater according to claim 1, characterized in that, The inlet end of the water inlet pipe and the outlet end of the water outlet pipe extend out of the outer casing and extend laterally.

3. The horizontal kitchen water heater according to claim 2, characterized in that, The water inlet end of the water inlet pipe is distributed on the front surface, rear surface or side surface of the outer casing; The water outlet end of the water outlet pipe is distributed on the front surface, rear surface, or side surface of the outer casing.

4. The horizontal kitchen water heater according to claim 1, characterized in that, The inner liner is arranged horizontally within the outer shell.

5. The horizontal kitchen water heater according to claim 4, characterized in that, The electric heating element extends laterally and is disposed within the inner liner.

6. The horizontal kitchen water heater according to claim 5, characterized in that, The electric heating tube includes a straight support section and a curved heating section, wherein the curved heating section is connected to the straight support section; The straight support end is fixedly installed on the inner liner, the curved heating section is offset toward the side wall of the inner liner and arranged on one side of the water inlet pipe, and the curved heating section is located at the bottom of the inner liner.

7. The horizontal kitchen water heater according to claim 1, characterized in that, The height of the outer shell is 200mm-500mm.

8. The horizontal kitchen water heater according to any one of claims 1-7, characterized in that, The outer shell includes a base plate and an upper cover. The upper cover is disposed on the base plate from top to bottom, and a mounting cavity is formed between the upper cover and the base plate. The bottom surface of the base plate forms a mounting support surface. The outer shell is also provided with two foam support members, the inner liner is sandwiched between the two foam support members, the upper cover covers the upper part of the inner liner, and a foaming space is formed between the upper cover, the bottom plate, the inner liner and the foam support members, and a foaming layer is formed in the foaming space; The inlet end of the water inlet pipe and the outlet end of the water outlet pipe extend to the outside of the upper cover, respectively.

9. The horizontal kitchen water heater according to claim 8, characterized in that, The upper cover is provided with an installation notch, which extends to the lower edge of the upper cover. The inlet end of the inlet pipe and the outlet end of the outlet pipe are located in the installation notch; The outer casing also includes a decorative panel with two mounting openings. The decorative panel is disposed on the upper cover and covers the mounting openings. The inlet end of the water inlet pipe and the outlet end of the water outlet pipe pass through the corresponding mounting openings.

10. The horizontal kitchen water heater according to claim 8, characterized in that, The upper cover is also provided with an inspection port; The outer casing also includes a front panel and a mounting liner. The mounting liner is disposed between the upper cover and the bottom plate, and the mounting liner divides the mounting cavity into a first cavity and a second cavity. The access port is connected to the first cavity, the inner liner is located in the second cavity, and the front panel is detachably mounted on the upper cover and covers the access port. The horizontal kitchen water heater also includes an electronic control board, which is electrically connected to the electric heating element and is located in the first cavity.

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