Hot water equipment and mounting structure thereof

Abstract

The invention provides hot water equipment and an installation structure thereof, the installation structure comprises an external hanging frame, an inner container support and a fastening heat insulation cushion block, and the external hanging frame is configured to be connected between the outer side of a machine shell of the hot water equipment and an installation base body; one end of the inner container support is fixedly connected with an inner container of the hot water equipment, and the other end of the inner container support is fixedly connected with the external hanging frame through a fastening bolt. The fastening heat insulation cushion block is arranged on the side, facing the inner container of the hot water equipment, of the inner container support in a cushioned mode, and a fastening nut used for fixing the fastening bolt is arranged in the fastening heat insulation cushion block. The fastening nut used for fixing the fastening bolt between the external hanging frame and the inner container support is arranged in the fastening heat insulation cushion block, direct contact between the fastening bolt and the inner container support is avoided, heat leakage of the inner container is reduced, the use amount of heat insulation materials between the machine shell and the inner container is reduced, the overall size of the hot water equipment is reduced, and the overall size of the hot water equipment is reduced. The energy efficiency grade of the hot water equipment is improved, and hidden installation is achieved.

Description

Technical Field

[0001] This invention relates to the field of hot water equipment technology, and in particular to a hot water equipment and its installation structure. Background Technology

[0002] Electric water heaters are experiencing strong growth in market share due to their safety, hygiene, and lack of pollution.

[0003] In addition, in order to solve the problem that electric water heaters take up a lot of space and reduce the aesthetics of the whole unit after installation, the common choice is to install electric water heaters in a concealed manner. However, concealed installation has high requirements for the overall size of the electric water heater itself, and it is difficult to achieve the first-level energy efficiency.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome at least some of the shortcomings of the prior art and provide an installation structure for a hot water equipment. By setting the fastening nuts of the fastening bolts used to fix the external bracket and the inner tank support in the fastening insulation pad, the fastening bolts can be prevented from directly contacting the inner tank support, reducing heat leakage of the inner tank, reducing the amount of insulation material used between the casing and the inner tank, helping to reduce the overall size of the hot water equipment, improving the energy efficiency rating of the hot water equipment, and achieving concealed installation.

[0006] To solve the above-mentioned technical problems, a first aspect of the present invention is to provide an installation structure for a hot water device, comprising:

[0007] An external bracket is configured to connect between the outer casing of the hot water equipment and the mounting base;

[0008] An inner tank support, one end of which is fixedly connected to the inner tank of the hot water equipment, and the other end of which is fixedly connected to the external bracket via fastening bolts; and

[0009] A heat-insulating pad is placed on the side of the inner tank bracket facing the inner tank of the hot water equipment, and the heat-insulating pad is provided with a fastening nut for fixing the fastening bolt.

[0010] In some embodiments, the installation structure of the hot water equipment also includes:

[0011] The heat insulation pad is configured to be placed between the inner tank support and the inner side of the housing of the hot water equipment, and the heat insulation pad has through holes to avoid the fastening bolts.

[0012] In some embodiments, the installation structure of the hot water equipment further includes: a supporting heat insulation pad configured to abut against the inner side of the housing of the hot water equipment and the inner tank of the hot water equipment, and the supporting heat insulation pad is connected to the heat insulation layer.

[0013] In some embodiments, the supporting heat insulation pad includes multiple supporting legs and a connecting wall that connects the multiple supporting legs in sequence.

[0014] In some embodiments, the fastening heat insulation pad, the heat insulation layer, and the supporting heat insulation pad are integrally injection molded from plastic material;

[0015] During the integral injection molding process, the fastening nut is injection molded into the fastening heat insulation pad.

[0016] In some embodiments, the first end of the external bracket is connected to the inner tank support via the fastening bolt, and the second end of the external bracket is connected to the housing of the hot water equipment via a fastening connector.

[0017] A second aspect of the present invention provides a hot water device, including the installation structure of the hot water device described above.

[0018] In some embodiments, the hot water equipment further includes a housing, an inner tank disposed inside the housing, and an inlet pipe and an outlet pipe communicating with the inner tank.

[0019] The water inlet pipe and the water outlet pipe are inserted into the inner tank from the rear side of the housing, below the external bracket;

[0020] Preferably, the water inlet pipe is located at the center of the inner tank along the axial direction, and the water outlet pipe is located on one side of the water inlet pipe;

[0021] More preferably, a filter screen is provided in the water inlet pipe.

[0022] In some embodiments, the section of the inlet pipe and / or the outlet pipe located between the housing and the inner liner is fitted with a rigid plastic sleeve.

[0023] In some embodiments, an inner liner support structure is provided at one end of the casing and the inner liner in the axial direction, for the purpose of centered the inner liner in the casing in the axial direction.

[0024] Preferably, the inner liner support structure includes a base and a plurality of support blocks disposed on the base;

[0025] The inner diameter of the base matches the inner diameter of the housing, and the plurality of support blocks abut against the end cap of the inner liner.

[0026] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0027] (1) The installation structure of the hot water equipment provided by the present invention can avoid direct contact between the fastening bolt and the inner tank support by setting the fastening nut of the fastening bolt used to fix the fastening bolt between the external bracket and the inner tank support in the fastening heat insulation pad, thereby reducing heat leakage of the inner tank, reducing the amount of heat insulation material used between the casing and the inner tank, helping to reduce the overall size of the hot water equipment, improving the energy efficiency level of the hot water equipment, and realizing concealed installation.

[0028] (2) The installation structure of the hot water equipment provided by the present invention reduces the number of heat dissipation points through the external bracket by setting the connection point between the external bracket and the casing as one bolt connection point + one screw connection point, thereby further reducing heat leakage of the inner tank and improving the energy efficiency level of the hot water equipment.

[0029] (3) The installation structure of the hot water equipment provided by the present invention, by setting a supporting heat insulation pad between the inner side of the casing and the inner tank of the hot water equipment, helps to increase the size of the hot water equipment in the axial direction, thereby reducing the size in the radial direction, which helps to achieve concealed installation.

[0030] (4) The hot water equipment provided by the present invention hides the inlet and outlet water pipes between the installation position of the housing and the mounting base by inserting the inlet and outlet water pipes into the inner tank from the back of the housing. This effectively utilizes the installation position of the housing and the mounting base to achieve the hidden installation of the inlet and outlet water pipes, avoiding the exposure of the inlet and outlet water pipes, and resulting in a good appearance.

[0031] (5) The hot water equipment provided by the present invention improves the efficiency of hot and cold water exchange, optimizes the hot water output rate, and improves the energy efficiency level of the hot water equipment by setting the water inlet pipe at the center of the inner tank in the axial direction.

[0032] (6) The hot water equipment provided by the present invention, by fitting a rigid plastic sleeve on the pipe section between the casing and the inner tank of the inlet pipe and / or outlet pipe, ensures that the inner tank is centered without affecting the installation. At the same time, the rigid plastic sleeve is strong enough to support the pressure of the foam material, so that the area can be filled with foam material, which helps to reduce heat leakage of the inner tank and improve the energy efficiency level of the hot water equipment.

[0033] (7) The hot water equipment provided by the present invention provides an inner tank support structure at one end of the axial direction between the casing and the inner tank, which can not only make the inner tank centrally arranged in the axial direction of the casing, but also ensure that the foaming material is better filled between the casing and the inner tank, so that the heat preservation of each part of the hot water equipment is more uniform and the energy efficiency level of the hot water equipment is improved. Attached Figure Description

[0034] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0035] Figure 1 This is a schematic diagram of the appearance of a water heater after installation according to the present invention;

[0036] Figure 2 yes Figure 1 Top view of the middle structure;

[0037] Figure 3 yes Figure 2 Sectional view of the middle structure along line AA;

[0038] Figure 4 yes Figure 3 A magnified view of part I of the middle structure;

[0039] Figure 5 yes Figure 2 BB-direction sectional view of the middle structure;

[0040] Figure 6 This is a partial structural diagram of the installation structure of a hot water device according to the present invention.

[0041] In the diagram: 100, Hot water equipment; 110, Housing; 120, Inner tank; 130, Installation structure; 131, External bracket; 132, Inner tank support; 133, Fastening insulation pad; 134, Fastening nut; 135, Insulation layer; 136, Supporting insulation pad; 140, Inlet pipe; 150, Outlet pipe; 160, Heating device; 170, Inner tank support structure; 171, Base; 172, Support block; 180, Rigid plastic sleeve;

[0042] 200. Expansion bolts;

[0043] 300. Install the base.

[0044] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0046] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] As described in the background section, existing related technologies generally choose to conceal the electric water heater to address the issue of its large footprint reducing the aesthetics of the entire unit after installation. However, concealed installation places high demands on the overall size of the water heater and makes it difficult to achieve Level 1 energy efficiency. The inventors conducted a heat dissipation simulation analysis of existing electric water heaters. The analysis results show that the main heat dissipation points of the water heater are the four external wall mounting bolts, the two inlet and outlet pipes, and the internal flange of the electrical compartment (7 locations in total). Based on this, the present invention provides an installation structure for a hot water device to at least solve the heat dissipation problem of the aforementioned external wall mounting bolts.

[0049] Specifically, the installation structure of the hot water equipment includes an external bracket, an inner tank support, and a fastening heat insulation pad. The external bracket is configured to connect the outer side of the hot water equipment's casing to the mounting base. One end of the inner tank support is fixedly connected to the inner tank of the hot water equipment, and the other end is fixedly connected to the external bracket via a fastening bolt. The fastening heat insulation pad is placed on the side of the inner tank support facing the inner tank of the hot water equipment, and a fastening nut for fixing the fastening bolt is provided in the fastening heat insulation pad. In this solution, by placing the fastening nut for fixing the fastening bolt between the external bracket and the inner tank support in the fastening heat insulation pad, direct contact between the fastening bolt and the inner tank support can be avoided, reducing heat leakage from the inner tank, reducing the amount of insulation material used between the casing and the inner tank, helping to reduce the overall size of the hot water equipment, improving the energy efficiency rating of the hot water equipment, and enabling concealed installation.

[0050] The preferred technical solution of the hot water equipment 100 and its installation structure provided by the present invention will be described below with reference to the accompanying drawings.

[0051] Figure 1 This is a schematic diagram of the appearance of a water heater after installation according to the present invention; Figure 2 yes Figure 1 Top view of the middle structure; Figure 3 yes Figure 2 Sectional view of the middle structure along line AA; Figure 4 yes Figure 3 A magnified view of part I of the middle structure; Figure 5 yes Figure 2 BB-direction sectional view of the middle structure; Figure 6 This is a partial structural diagram of the installation structure of a hot water device according to the present invention.

[0052] like Figures 1 to 5 As shown, the hot water equipment 100 is mounted on a mounting base 300 such as a wall using expansion bolts 200. The hot water equipment 100 includes a housing 110 and an inner tank 120 disposed within the housing 110. The inner tank 120 is connected to an inlet pipe 140 and an outlet pipe 150. The housing 110 includes a cylindrical body, with end caps sealingly connected to both ends of the cylindrical body to form mounting cavities for mounting the inner tank 120. Furthermore, the cylindrical body is provided with an inlet pipe mounting port and an outlet pipe mounting port corresponding to the inlet pipe 140 and the outlet pipe 150, respectively. A heating device 160 is disposed inside the inner tank 120, and a power supply wire for supplying power to the heating device 160 is connected to the heating device 160. The end cap is provided with a through hole through which the power supply wire passes and is connected to a power source. When the hot water equipment 100 is in operation, water enters the inner tank 120 through the inlet pipe 140, and the heated water flows out through the outlet pipe 150 for user use.

[0053] Typically, after the inner tank 120 is installed in the casing 110, foaming material is injected into the gap between the inner tank 120 and the casing 110 to form a dense insulation layer. Furthermore, the secondary foaming of the foaming material can buffer vibrations experienced by the inner tank 120. Simultaneously, the foaming material effectively retards flames and provides heat insulation, improving the safety performance and energy efficiency rating of the hot water equipment 100.

[0054] In some implementations, such as Figure 2 and Figure 3 As shown, the water inlet pipe 140 and the water outlet pipe 150 are inserted into the inner liner 120 from the rear side of the housing 110, below the external bracket 131. Optionally, the water inlet pipe 140 and the water outlet pipe 150 are inserted into the inner liner 120 from the rear side of the housing 110 at any angle between 40° and 50°. Preferably, the water inlet pipe 140 and the water outlet pipe 150 are inserted into the inner liner 120 from the rear side of the housing 110 at a 45° angle.

[0055] In the above solution, the inlet and outlet water pipes are inserted into the inner tank 120 from the back of the housing 110, thereby hiding the inlet and outlet water pipes between the housing 110 and the mounting base 300. This effectively utilizes the mounting positions of the housing 110 and the mounting base 300 to achieve concealed installation of the inlet and outlet water pipes, avoiding exposure of the inlet and outlet water pipes and resulting in a good appearance.

[0056] Moreover, the concealed installation of the inlet and outlet water pipes ensures that the overall size of the hot water equipment 100 is consistent with the diameter of the casing 110, which meets most installation scenarios while reducing the space occupied by the user.

[0057] In some embodiments, the outlet pipe 150 includes a liner and an insulating pipe, and the liner and the insulating pipe are assembled separately during the installation of the outlet pipe 150, such that the free end of the liner is bent upward to form an extension, so that the inlet of the outlet pipe 150 is located at the top of the inner tank 120, which can reduce the impact of the cold water entering through the inlet pipe 140 on the hot water layer above the inner tank 120 and help improve the hot water output efficiency.

[0058] Preferably, the water inlet pipe 140 is located at the center of the inner liner 120 in the axial direction, and the water outlet pipe 150 is located on one side of the water inlet pipe 140; more preferably, a filter screen is provided in the water inlet pipe 140.

[0059] In the above solution, by placing the inlet pipe 140 at the center of the inner tank 120 along the axial direction, the efficiency of hot and cold water exchange is improved, the hot water output rate is optimized, and the energy efficiency rating of the hot water equipment is improved to 100. Furthermore, the filter screen also improves the uniformity of the water output, further enhancing the efficiency of hot and cold water exchange.

[0060] In some embodiments, the section of the inlet pipe 140 and / or the outlet pipe 150 located between the housing 110 and the inner tank 120 is fitted with a rigid plastic sleeve 180. This ensures that the inner tank 120 is centered without affecting installation, and the rigid plastic sleeve 180 is strong enough to support the pressure of the foam material, allowing the area to be filled with foam material. This helps reduce heat leakage from the inner tank 120, improves the energy efficiency rating of the hot water equipment 100, and at least solves the heat dissipation problem of the inlet and outlet pipes 150.

[0061] It should be noted that a small gap, such as 0.3mm to 0.5mm, should be formed between the rigid plastic sleeve 180 and the inlet pipe 140 and / or the outlet pipe 150 to facilitate the filling of the foam material.

[0062] In some implementations, such as Figure 5As shown, an inner liner support structure 170 is provided at one end of the housing 110 and the inner liner 120 in the axial direction, which is used to make the inner liner 120 centrally arranged in the axial direction of the housing 110.

[0063] In the above solution, by setting an inner tank support structure 170 at one end of the axial direction between the housing 110 and the inner tank 120, the inner tank 120 can be centrally arranged in the axial direction of the housing 110, and the foaming material can be better filled between the housing 110 and the inner tank 120, so that the heat preservation of the hot water equipment 100 is more uniform and the energy efficiency rating of the hot water equipment 100 is improved.

[0064] Preferably, the inner liner support structure 170 includes a base 171 and a plurality of support blocks 172 disposed on the base 171; wherein the inner diameter of the base 171 matches the inner diameter of the housing 110, and the plurality of support blocks 172 abut against the end cap of the inner liner 120.

[0065] As an example, four support blocks 172 are provided on the base 171. The four support blocks 172 cover the end cap of the inner liner 120 by approximately 15mm in the axial direction, together ensuring that the inner liner 120 is better centered. Moreover, the space outside the four support blocks 172 can still be filled with foam material, so that the product's thermal insulation performance can be guaranteed, thus at least solving the problem of heat dissipation point of the inner flange of the electrical room mentioned above.

[0066] It should be noted that the inner liner support structure 170 can be installed first and then covered with a foam plastic bag, which can ensure the stability of the inner liner support structure 170 inside the casing 110.

[0067] In addition, polyester fiber cotton can be filled at the end caps on both sides of the inner liner 120 to improve heat dissipation at the liner opening.

[0068] like Figure 4 and Figure 6 As shown, the installation structure 130 of the hot water equipment 100 includes an external bracket 131, an inner tank support 132, and a fastening heat insulation pad 133. The external bracket 131 is configured to connect the outer side of the housing 110 of the hot water equipment 100 to the mounting base 300. One end of the inner tank support 132 is configured to be fixedly connected to the inner tank 120 of the hot water equipment 100, and the other end is configured to be fixedly connected to the external bracket 131 by a fastening bolt. The fastening heat insulation pad 133 is placed on the side of the inner tank support 132 facing the inner tank 120 of the hot water equipment 100, and the fastening heat insulation pad 133 is provided with a fastening nut 134 for fixing the fastening bolt.

[0069] It should be noted that the above-mentioned installation structure 130 is installed symmetrically in two sets in the axial direction of the hot water equipment 100 to improve the balance and stability of the hot water equipment 100.

[0070] As an example, the fastening heat insulation pad 133 is made of plastic; wherein, the fastening nut 134 is directly injection molded inside the fastening heat insulation pad 133. It should be explained that the fastening nut 134 should have a certain strength to form a strong fastening force with the fastening bolt to support the weight of the water in the inner tank 120.

[0071] Furthermore, the first end of the external bracket 131 is connected to the inner tank support 132 via the fastening bolt, and the second end of the external bracket 131 is connected to the housing 110 of the hot water equipment 100 via a fastening connector. It is understood that the external bracket 131 is provided with hanging holes for connection with expansion bolts 200.

[0072] In the above solution, by setting the connection point between the external bracket 131 and the housing 110 as one bolt connection point and one screw connection point, since the screw is fastened to the housing 110 at a position far away from the fastening heat insulation pad 133 and far from the inner tank 120, it will not become a heat dissipation point. This can reduce the number of heat dissipation points through the external bracket 131, further reduce heat leakage of the inner tank 120, and improve the energy efficiency rating of the hot water equipment 100.

[0073] Furthermore, it should be understood that the inner tank support 132 is provided with fastening holes for fastening bolts to pass through, and the inner diameter of the fastening holes is larger than the diameter of the fastening bolts. Therefore, when the fastening nuts 134 used to fix the fastening bolts between the external bracket 131 and the inner tank support 132 are placed in the fastening heat insulation pad 133, direct contact between the fastening bolts and the inner tank support 132 can be avoided, reducing heat leakage of the inner tank 120, reducing the amount of heat insulation material used between the casing 110 and the inner tank 120, helping to reduce the overall size of the hot water equipment 100, improving the energy efficiency rating of the hot water equipment 100, and achieving concealed installation.

[0074] In some embodiments, the mounting structure 130 further includes a heat insulation pad 135 configured to be placed between the inner tank support 132 and the inner side of the housing 110 of the hot water equipment 100, and the heat insulation pad 135 has through holes to avoid the fastening bolts, so as to prevent the housing 110 from directly contacting the inner tank support 132 and further reduce heat leakage of the inner tank 120.

[0075] In some embodiments, the mounting structure 130 further includes a supporting heat insulation pad 136 configured to abut against the inner side of the housing 110 of the hot water equipment 100 and the inner tank 120 of the hot water equipment 100, and the supporting heat insulation pad 136 is connected to the heat insulation layer 135. As an example, the supporting heat insulation pad and the heat insulation layer 135 are integrally injection molded.

[0076] In the above solution, by setting a supporting heat insulation pad 136 between the inner side of the casing 110 and the inner tank 120 of the hot water equipment 100, it is helpful to increase the size of the hot water equipment 100 in the axial direction, thereby reducing the size in the radial direction, which helps to achieve concealed installation.

[0077] In detail, the supporting heat insulation pad 136 includes multiple supporting legs and connecting walls that connect the multiple supporting legs in sequence. This allows for a reduction in material usage based on a determined support capacity, which helps to reduce the overall weight of the hot water equipment 100.

[0078] In some embodiments, the fastening heat insulation pad 133, the heat insulation pad layer 135, and the supporting heat insulation pad 136 are integrally injection molded from plastic material.

[0079] In detail, the inner liner support 132 has an overall "U" shaped structure. The fastening heat insulation pad 133 is connected to the heat insulation pad 135 on one side by a back plate, and the other side is an opening. The inner liner support 132 is inserted between the fastening heat insulation pad 133 and the heat insulation pad 135 through the opening and then connected to the external bracket 131 by fastening bolts.

[0080] Through the above-described solution of the present invention, the thickness of the insulation layer between the casing 110 and the inner tank 120 of the hot water equipment 100 can be reduced to 30mm, and the height of the hot water equipment 100 can be controlled at 370mm. Therefore, only 385mm of ceiling space is needed to achieve the concealed installation of the hot water equipment 100. Moreover, the hot water equipment 100 has a high energy efficiency rating, low overall cost, and is not restricted in installation, which helps to improve the market competitiveness of the product.

[0081] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An installation structure for a hot water device, characterized in that, The installation structure of the water heating device comprises: an external hanger configured to be connected between an outer side of a casing of the water heating device and a mounting base; an inner tank support, one end of which is configured to be fixedly connected with an inner tank of the water heating device, and the other end of which is configured to be fixedly connected with the external hanger through a fastening bolt; and a fastening heat insulation pad block, which is arranged on a side of the inner tank support facing the inner tank of the water heating device, and in which a fastening nut for fixing the fastening bolt is arranged.

2. The installation structure for a hot-water apparatus according to claim 1, wherein Further comprising: a heat insulation pad layer, which is arranged between the inner tank support and an inner side of the casing of the water heating device, and which is provided with a through hole for avoiding the fastening bolt.

3. The installation structure for a hot-water apparatus according to claim 2, wherein Further comprising: a support heat insulation pad block, which is arranged between an inner side of the casing of the water heating device and the inner tank of the water heating device, and which is connected with the heat insulation pad layer.

4. The installation structure of the water heating device according to claim 3, wherein the support heat insulation pad block comprises a plurality of support legs and a connecting wall sequentially connected with the plurality of support legs.

5. The installation structure of the water heating device according to claim 3, wherein the fastening heat insulation pad block, the heat insulation pad layer and the support heat insulation pad block are integrally injection molded by using a plastic material; wherein, during the integrally injection molding, the fastening nut is injection molded in the fastening heat insulation pad block.

6. The installation structure of the water heating device according to any one of claims 1 to 5, wherein a first end of the external hanger is connected with the inner tank support through the fastening bolt, and a second end of the external hanger is connected with the casing of the water heating device through a fastening connector.

7. A hot water appliance, characterized by The installation structure of the water heating device according to any one of claims 1 to 6.

8. The water heating apparatus according to claim 7, wherein Further comprising a casing, an inner tank arranged in an interior of the casing, and a water inlet pipe and a water outlet pipe communicated with the inner tank; wherein the water inlet pipe and the water outlet pipe are inserted into the inner tank from a rear side of the casing at a position below the external hanger; Preferably, the water inlet pipe is located at a central position of the inner tank in an axial direction, and the water outlet pipe is located at one side of the water inlet pipe; Further preferably, a filter screen is arranged in the water inlet pipe.

9. The water heating device according to claim 8, wherein a hard plastic sleeve is arranged on a pipe section of the water inlet pipe and / or the water outlet pipe between the casing and the inner tank.

10. The water heating device according to claim 8 or 9, wherein an inner tank support structure is arranged at one end in an axial direction between the casing and the inner tank, for centrally arranging the inner tank in the casing in the axial direction; Preferably, the inner tank support structure comprises a base and a plurality of support blocks arranged on the base; wherein an inner diameter of the base matches an inner diameter of the casing, and the plurality of support blocks abut against a head of the inner tank.

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