Electric water heater

Abstract

An electric water heater comprises an inner container, a shell, an inner hanging frame and an outer hanging frame, the inner container is located in the shell, the inner container is connected with the outer hanging frame arranged on the shell through the inner hanging frame, the inner container comprises an inner container base body, an inner groove is formed in the inner container base body, the inner hanging frame comprises an installation part, and the inner hanging frame is connected with the inner container base body through the installation part. And the mounting part is arranged in the inner groove. Compared with the prior art, the technical scheme provided by the utility model has the advantages that the structure is simple and exquisite, the stress between the inner container and the inner hanging frame is dispersed, the welding step is simplified, and parts are convenient to disassemble, assemble and replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of electric water heater. BACKGROUND

[0002] The existing electric water heater products on market, inner container and inner hanging frame are basically connected by traditional welding or riveting mode, especially metal inner container is generally welded directly by welding process Inner hanging frame is welded on the outer surface of inner container, and inner hanging frame is connected with outer hanging frame arranged outside shell to support the whole inner container. For example, a Chinese invention patent with the title of a water heater, with the authorization announcement No. CN103062890B, discloses that: it includes: inner container, for containing a certain amount of water that can be heated, the inner container has barrel wall, the barrel wall has upper half and lower half; water inlet and water outlet, and the inner container is communicated to transfer water flowing into the inner container and flowing out of the inner container; heat source, associated with the inner container to heat the water in the inner container; shell, wrapped outside the inner container and formed with heat insulation layer between them; outer hanging frame, arranged on the shell for mounting the water heater on the wall; inner hanging frame, fixedly arranged on the barrel wall to connect the inner container and the outer hanging frame; and support, arranged in the heat insulation layer and located at the lower half of the barrel wall; the water heater includes foaming material formed in the heat insulation layer, and the support is made of insulating material harder than the foaming material. The technical solution of the invention patent, the inner hanging frame 52 is arranged on the upper half of the barrel wall of the inner container by traditional fixing mode, such as welding, or a transition plate is welded on the barrel wall, and then the inner hanging frame is fixed on the transition plate by bolt fixing mode. For another example, a Chinese utility model patent with the title of double-container electric water heater, with the authorization announcement No. CN218033708U, discloses that: it includes: two inner containers, the inner container forms a water storage cavity inside; water inlet pipe, the water inlet pipe extends into one of the inner containers; water outlet pipe, the water outlet pipe extends into another of the inner containers; connecting water pipe, installed between the two inner containers; electric heating component, the electric heating component is used for generating heat by electricity; wherein each of the inner containers is provided with the electric heating component, and a hanging frame assembly is arranged between the backs of the two inner containers, and a connecting bracket is also arranged between the two inner containers, and the connecting bracket is arranged on the front side of the center line of the inner container. The connecting bracket includes two welded brackets, the two welded brackets are arranged back to back and fixedly connected together, and the two ends of the welded bracket are welded on the circumferential wall of the corresponding inner container. The above two technical solutions both use traditional welding mode to realize the connection between the inner container and the inner hanging frame, and the stress point is still concentrated at the welding point or the connection point, the stress is abnormally concentrated, which can easily cause corrosion around the welding point, porcelain explosion and other problems to reduce the mechanical strength, and the above two technical solutions also cannot simplify the welding step by using new materials of inner container.

[0003] For example, Chinese utility model patent CN218565768U, entitled "A Wall-Mounted Module for an Electric Water Heater," discloses that: the electric water heater includes an outer shell and an inner tank, the inner tank being disposed within the outer shell, the outer shell and the inner tank forming an installation cavity, the outer shell having a first installation hole, the wall-mounted module being disposed within the installation cavity and communicating with the first installation hole, the wall-mounted module being used for connection with expansion bolts for installation; the wall-mounted module includes: an inner tank support connected to the inner tank; an insulating inner tank pad; and an insulating fastening assembly; wherein, the upper end of the insulating inner tank pad is fitted over the inner tank support, the lower end of the inner tank pad communicating with the first installation hole, and the insulating fastening assembly connecting the inner tank support and the insulating inner tank pad to the outer shell. The inner liner support 110 includes two ends 111 and a bent portion 112. The inner surfaces of the two ends 111 are connected to the outer surfaces of the inner liner 200 by welding. The middle part of the inner liner support 110 protrudes outward relative to the inner liner 200 to form the bent portion 112. The bent portion 112 is used to mate with the slot of the insulating inner liner pad 120. In this way, the weight of the inner liner and the water contained inside is transferred through the inner liner support 110 to the inner liner pad 120, and then to the wall. In the technical solution described in this utility model, the stress point between the inner liner 200 and the inner liner support 110 is actually still the weld point between the two ends 111 and the inner liner 200. Although the contact area with the inner liner 200 is increased by setting the two ends 111, the welded connection method still has the problem of excessive stress concentration.

[0004] As materials science continues to extend into the field of electric water heaters, in order to solve problems such as scaling and corrosion that occur during water storage and heating, the material of the inner tank of electric water heaters has also undergone a series of transformations from metal materials to enamel layers, and then to plastic crystal materials. This transformation has also provided more possibilities for the connection method between the inner tank and the inner bracket, thus making it possible to further explore how to disperse the concentrated stress caused by the connection structure between the inner tank and the inner bracket. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an electric water heater with a simple and compact structure, distributed stress between the inner tank and the inner bracket, simplified welding steps, and easy disassembly and replacement of components.

[0006] The main technical solution adopted by this utility model is as follows:

[0007] An electric water heater comprises an inner container, an outer shell, an inner hanging frame and an outer hanging frame, the inner container is located in the outer shell, the inner container is connected with the outer hanging frame arranged on the outer shell through the inner hanging frame, the inner container comprises an inner container base body, an inner groove is formed on the inner container base body, the inner hanging frame comprises a mounting part, the mounting part is arranged in the inner groove.

[0008] The inner container further comprises a fiber layer fixed on the outer surface of the inner container base body, and the fiber layer covers part of the mounting part.

[0009] The mounting part comprises a fixing part and a connecting part connected with each other, the fixing part is arranged in the inner groove, and the inner hanging frame further comprises a supporting part, the supporting part is detachably connected with the fixing part through the connecting part.

[0010] The fixing part is fixedly connected with the connecting part.

[0011] The fixing part is detachably connected with the connecting part.

[0012] The fixing part comprises a top cover, a notch is formed in the top cover, and the connecting part is matched with the notch.

[0013] One end of the connecting part is connected with the supporting part, the other end of the connecting part is formed as an enlarged end, the enlarged end is inserted into the notch and clamped on the top cover.

[0014] The connecting part is arranged in the notch, and the supporting part is connected with the connecting part through a fastener.

[0015] The notch comprises an entering section and a clamping section, and the width of the entering section is greater than that of the clamping section.

[0016] The fixing part further comprises a bottom shell, the bottom shell and the top cover are matched and define a receiving cavity, and the connecting part is at least partially located in the receiving cavity.

[0017] The number of the inner containers is at least one, and the supporting part is connected with the at least one inner container through the mounting part.

[0018] The number of the inner containers is two, and the electric water heater further comprises a support, the support comprises a hoop and a supporting block, the hoop is sleeved on the two inner containers, and the supporting block is symmetrically arranged between the two inner containers, and the supporting block is a three-prism block with concave arc surfaces on both sides.

[0019] The utility model discloses the following beneficial effect has: the inner hanging frame is installed in the inner recess of the inner container base body through the installation part, converts the traditional welding point connection mode into the cooperation installation between the installation part and the inner recess, and the stress point is dispersed in all directions, avoids the situation that the stress point is too concentrated and damages the inner container, the installation part is covered through the fiber layer of the outer surface consolidation of the inner container base body, thereby burying the installation part in the inner recess to make the installation part fixedly installed in the inner recess, therefore, the welding process step is simplified, and production and processing efficiency is improved, the support part is detachably connected with the fixing piece through the connecting piece, provides the condition for replacing the support part of different specifications and sizes, can be better applicable to the electric water heater product of different size specifications, different inner container quantity, especially the detachable connection between the fixing piece and the connecting piece is favorable to the quick assembly of workers, and simultaneously, it is convenient to dismount and replace parts, the bottom shell and the top cover define the containing cavity, and it is favorable to the assembly of the connecting piece, the electric water heater product can adopt single container or double container, and the support is installed on the double container, and the stability is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the back side view schematic diagram of electric water heater of the application.

[0021] Figure 2 It is Figure 1 It is the cross section structure schematic diagram of A-A in the middle.

[0022] Figure 3 It is Figure 1 It is the partial exploded structure schematic diagram of the electric water heater of single container in the middle.

[0023] Figure 4 It is Figure 3 It is the enlarged view of B part in the middle, and the installation part in the fiber layer with the matching component is shown.

[0024] Figure 5 It is Figure 3 It is the further exploded structure schematic diagram in the middle, and the separation state of the inner container base body and the fiber layer is shown.

[0025] Figure 6 It is the installation part structure schematic diagram in one embodiment of the application.

[0026] Figure 7 It is Figure 6 It is the cross section structure schematic diagram of C-C in the middle.

[0027] Figure 8 It is the installation part cross section structure schematic diagram with fastener in another embodiment of the application.

[0028] Figure 9 It is the partial structure schematic diagram of the electric water heater of double container in the application, and the support is shown on one side of the double container.

[0029] Figure 10 It is a schematic view of the support structure.

[0030] 1 inner container, 11 inner container base, 110 inner recess, 12 fiber layer, 2 outer shell, 3 inner hanging bracket, 31 mounting portion, 311 fixing member, 3111 top cover, 3112 bottom shell, K notch, K1 entry section, K2 clamping section, 312 connecting member, P bulging end, 32 support portion, 321 cross beam, 322 connecting leg, 4 outer hanging bracket, M fastener, Q accommodating cavity, 5 support, 51 hoop, 52 bearing block. DETAILED DESCRIPTION

[0031] The technical solutions of the utility model will be further described below in combination with the drawings:

[0032] Referring to Figures 1-5 shown, an electric water heater, including inner container 1, outer shell 2, inner hanging bracket 3 and outer hanging bracket 4, inner container 1 is located in outer shell 2, inner container 1 is connected through inner hanging bracket 3 with the outer hanging bracket 4 of being arranged on outer shell 2, inner container 1 includes inner container base 11, and the inner recess 110 is formed on inner container base 11, and inner hanging bracket 3 includes mounting portion 31, and mounting portion 31 is installed in inner recess 110. Preferably, inner container base 11 is integrally formed by adopting plastic parts through blow molding process, and the structure for forming inner recess 110 on inner container base 11 is provided on the blow molding mold. In an embodiment of the present application, the slot opening of inner recess 110 is shrunk, and mounting portion 31 is clamped in inner recess 110 after passing through the shrunk slot opening. In another embodiment of the present application, mounting portion 31 can also be welded in inner recess 110 by using traditional welding method, and the welding points during welding are dispersed in the cavity of inner recess 110 in all directions. In the present application, the inner hanging bracket is installed in the inner recess of the inner container base by the mounting portion, so that the traditional welding point connection mode is converted into the matching installation between the mounting portion and the inner recess, or the traditional welding point connection mode is converted into the connection mode of the welding points dispersed in all directions, and the stress point is no longer concentrated, avoiding the damage of the inner container caused by the excessive concentration of the stress point.

[0033] Referring to Figures 2-5 , 9, inner container 1 further includes fiber layer 12 consolidated on the outer surface of inner container base 11, and fiber layer 12 covers part of mounting portion 31. Preferably, the inner container 1 in the present application adopts a plastic crystal inner container, and a layer of fiber layer 12 is consolidated on the outer surface of the inner container base 11 made of plastic material, and during the processing of the inner container 1, the mounting portion 31 is placed in the inner recess 110, and then a layer of fiber layer 12 is wound on the outer surface of the inner container base 11 to bury the mounting portion 31 in the inner recess 110, so as to fix the mounting portion 31 in the inner recess 110, thereby omitting the process steps such as welding.

[0034] Referring to Figures 2-8As shown, the mounting part 31 comprises a fixing member 311 and a connecting member 312 connected with each other, the fixing member 311 is arranged in the inner recess 110, and the inner hanging rack 3 further comprises a supporting part 32 which is detachably connected with the fixing member 311 through the connecting member 312. Preferably, the supporting part 32 comprises a cross beam 321 and a connecting leg 322, the overall shape of the supporting part 32 is in the shape of Ω, the cross beam 321 is in the shape of arc or M in the length direction, and the cross beam 321 has multiple bends in the width direction to improve the mechanical strength of the cross beam 321. In the present application, different specifications and sizes of supporting parts can be used according to the actual specific circumstances of the actual needs, and in the present application, a thermal insulation layer is also filled between the inner container and the outer shell, and different specifications and sizes of supporting parts can also better adapt to different thicknesses of the thermal insulation layer.

[0035] Referring to Figures 6-8 As shown, the fixing member 311 and the connecting member 312 are fixedly connected. Preferably, the connecting member 312 can be a bolt or a nut welded on the fixing member 311, and then the detachable connection with the supporting part 32 is realized through other matching components.

[0036] Referring to Figures 6-8 As shown, the fixing member 311 and the connecting member 312 are detachably connected.

[0037] Referring to Figures 6-8 As shown, the fixing member 311 comprises a top cover 3111 which is provided with a notch K, and the connecting member 312 is matched with the notch K. Preferably, the connecting member 312 can be a nut, which is welded on the outside of the top cover 3111 at a position corresponding to the notch K, or welded on the inside of the top cover 3111 at a position corresponding to the notch K, so as to facilitate the subsequent screwing of the matching components (i.e., the fixing member 311 and the connecting member 312 still adopt the fixed connection mode). Preferably, the connecting member 312 can also be a bolt, the nut of the bolt is inserted into the notch K and welded at the notch K, and the screw rod of the bolt is detachably connected with the supporting part 32 (i.e., the fixing member 311 and the connecting member 312 also adopt the fixed connection mode). Correspondingly, preferably, the fixing member 311 and the connecting member 312 are connected in a detachable manner, which will be described in detail in the subsequent content.

[0038] Referring to Figure 6 , 7As shown, one end of the connector 312 is connected to the support part 32, and the other end of the connector 312 is formed as an enlarged end P, which extends into the slot K and is snapped onto the top cover 3111. Preferably, the connector 312 is a bolt, with one end of the bolt nut extending into the slot K and snapped onto the top cover 3111 to form a detachable connection between the fixing part 311 and the connector 312. Then, one end of the screw is passed through the through hole opened on the connecting foot 322 of the support part 32, and a nut is screwed onto one end of the screw to achieve a detachable connection between the connector 312 and the support part 32.

[0039] See Figure 8 As shown, the connector 312 is inserted into the slot K, and the support part 32 is connected to the connector 312 via a fastener M. Preferably, the connector 312 is a nut, which is inserted into the slot K and secured to the top cover 3111. The fastener M is a bolt, with one end of the bolt passing through a through hole in the connecting foot 322 of the support part 32, and then engaging with the connector 312 in the slot K to achieve a detachable connection between the connector 312 and the support part 32.

[0040] See Figure 6 As shown, the slot K includes an entry section K1 and a mounting section K2, with the width of the entry section K1 being greater than the width of the mounting section K2.

[0041] See Figure 7 , 8 As shown, the fixing member 311 also includes a bottom shell 3112, which interlocks with the top cover 3111 to define a receiving cavity Q. The connecting member 312 is at least partially located in the receiving cavity Q. In this application, when the connecting member is a bolt, the expanded end of the bolt is located in the receiving cavity; or, when the connecting member is a nut, the nut is located in the receiving cavity. The aforementioned cases where the connecting member is a bolt or a nut include cases where the fixing member and the connecting member are fixedly connected or detachably connected.

[0042] See Figure 2 , 3 As shown in Figures 5 and 9, the number of inner liner 1 is at least one, and the support portion 32 is connected to at least one inner liner 1 via the mounting portion 31. In this application, when a single liner is used, the crossbeam of the support portion is located on the side of the single inner liner; when a double liner is used, the crossbeam of the support portion is located between the two inner liners.

[0043] See Figure 9 , 10As shown, the number of the inner containers 1 is two, and the support 5 is further included, the support 5 includes a hoop 51 and a supporting block 52, the hoop 51 is sleeved on the two inner containers 2, and the supporting block 52 is symmetrically arranged between the two inner containers 1, and the supporting block 52 is a triangular prism block with concave arc surfaces on two sides. Preferably, the support 5 is in the shape of an "8" as a whole. In the application, the support is sleeved on the two inner containers after being heated by using the principle of thermal expansion and cold contraction, so that the installation operation of the support can be easily realized. In the application, preferably, the hoop 51 and the supporting block 52 are integrally formed, the supporting block 52 is a sharp corner triangular prism block with concave arc surfaces on two sides, and the two sides are respectively fitted on the outer surfaces of the two inner containers 1 through the concave arc surfaces, thereby playing a supporting and limiting role together.

[0044] Although the specific embodiments of the present application have been described above, those skilled in the art can make modifications to the present application without departing from the spirit and principles of the present application, and the protection scope of the present application is defined by the claims and their equivalents.

Claims

1. An electric water heater comprising an inner tank, an outer shell, an inner hanger and an outer hanger, the inner tank being located in the outer shell, the inner tank being connected with the outer hanger provided on the outer shell through the inner hanger, characterized in that: The inner container comprises an inner container base body, an inner recess is formed on the inner container base body, and the inner hanger comprises a mounting portion, which is arranged in the inner recess.

2. The electric water heater according to claim 1, characterized in that: The inner container further comprises a fiber layer fixed on the outer surface of the inner container base body, and the fiber layer covers part of the mounting portion.

3. The electric water heater according to claim 1 or 2, characterized in that: The mounting portion comprises a fixing member and a connecting member connected with each other, the fixing member is arranged in the inner recess, and the inner hanger further comprises a supporting portion, which is detachably connected with the fixing member through the connecting member.

4. The electric water heater according to claim 3, characterized in that: The fixing member is fixedly connected with the connecting member.

5. The electric water heater according to claim 3, wherein: The fixing member is detachably connected with the connecting member.

6. The electric water heater according to claim 4 or 5, characterized in that: The fixing member comprises a top cover, and a notch is formed in the top cover, and the connecting member is matched with the notch.

7. The electric water heater according to claim 6, characterized in that: One end of the connecting member is connected with the supporting portion, and the other end of the connecting member is formed as an enlarged end, which is inserted into the notch and clamped on the top cover.

8. The electric water heater according to claim 6, characterized in that: The connecting member is arranged in the notch, and the supporting portion is connected with the connecting member through a fastener.

9. The electric water heater according to claim 6, characterized in that: The notch comprises an entering section and a clamping section, and the width of the entering section is greater than that of the clamping section.

10. The electric water heater according to claim 6, characterized in that: The fixing member further comprises a bottom shell, the bottom shell and the top cover are buckled and define a receiving cavity, and the connecting member is at least partially arranged in the receiving cavity.

11. The electric water heater according to claim 3, wherein: The number of the inner containers is at least one, and the supporting portion is connected with at least one of the inner containers through the mounting portion.

12. The electric water heater according to claim 11, characterized in that: The number of the inner containers is two, and the inner container further comprises a support, which comprises a hoop and a supporting block, the hoop is sleeved on the two inner containers, and the supporting block is symmetrically arranged between the two inner containers, and the supporting block is a triangular prism block with concave arc surfaces on both sides.

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