Fan assembly and gas water heater

Abstract

The utility model discloses a fan assembly and a gas water heater, and relates to the technical field of gas water heaters. The fan assembly comprises a volute, a fan body and an air inlet adjusting plate, a mounting opening is formed in one side of the volute, and the fan body is arranged in the volute. The air inlet adjusting plate and the installation opening are fixed in a press-fitting mode, and the air inlet adjusting plate is provided with an air inlet corresponding to the fan body. In the press fit process of the air inlet adjusting plate and the installation opening, it can be guaranteed that stress is even and deformation is not prone to occurring all the time, whistling generated by a gap formed in the connecting position of the air inlet adjusting plate and the volute side wall is avoided, and meanwhile fluid loss is reduced. In the assembling process, after the volute is assembled, the air inlet adjusting plate is pressed into the mounting opening. The assembling time is shortened, and the assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas water heater technical field especially, relates to a fan assembly and gas water heater. BACKGROUND

[0002] The lower gas water heater is different from the demand of the fan's air intake because of the product volume, in order to solve the different air intake demand of gas water heater, such as Figure 1 And Figure 2 As shown in, the existing fan assembly includes fan 100, volute body 200 and adjusting plate 300, fan 100 is arranged in volute body 200, and is fixed through first screw 400;Adjusting plate 300 is fixed at the air inlet of volute body 200 through multiple second screws 500, the size of air inlet can be adjusted by replacing adjusting plate 300 of different specifications.But in the assembly process of adjusting plate 300, if multiple second screws 500 are fastened in turn, then it can cause the deformation of volute body 200 and adjusting plate 300 due to uneven installation stress, cause the gap between adjusting plate 300 and the side wall of volute body 200, and the whistling sound will be produced when air overflows through the gap, and fluid loss will be caused simultaneously.In addition, the fan assembly needs two processes of screwing, and the assembly efficiency is low. SUMMARY

[0003] The first technical problem solved by the utility model is to propose a fan assembly, which can effectively solve the problems of whistling sound at the air inlet of the existing fan assembly and low assembly efficiency, and achieve the purpose of improving the sealing performance and assembly efficiency of the air inlet of the fan assembly.

[0004] The second technical problem solved by the utility model is to propose a gas water heater, which can effectively solve the problems of high noise and low assembly efficiency of the existing gas water heater, and achieve the purpose of improving the sealing performance of the fan assembly, reducing noise, and improving the assembly efficiency.

[0005] The first technical problem is solved by the following technical scheme:

[0006] The fan assembly comprises:

[0007] The volute is provided with a mounting port on one side;

[0008] The fan body is arranged in the volute;

[0009] The air inlet adjusting plate is fixed by pressing with the mounting port, and the air inlet adjusting plate is provided with an air inlet corresponding to the fan body.

[0010] The fan assembly has the beneficial effects compared with the background art:

[0011] The fan assembly provided by this utility model includes a volute, a fan body, and an air inlet regulating plate. The fan body is housed within the volute, and an installation port is provided on one side of the volute. The air inlet regulating plate is press-fitted to the installation port. The air inlet regulating plate has an air inlet corresponding to the fan body, thereby allowing external air to be drawn into the volute through the air inlet via the fan body. During the pressing process between the air inlet regulating plate and the installation port, the force between the air inlet regulating plate and the side wall of the volute is kept uniform and does not easily deform, preventing gaps caused by deformation at the connection between the air inlet regulating plate and the side wall of the volute from causing whistling noise, and also reducing fluid loss. During assembly, after the volute is assembled, the air inlet regulating plate is pressed into the installation port, shortening the assembly time and improving assembly efficiency.

[0012] In one embodiment, a crimping female stop is provided on the inner circumferential side of the mounting port, and a crimping male stop is provided on the outer circumferential side of the air inlet regulating plate, wherein the crimping female stop and the crimping male stop are tightly fitted together.

[0013] In one embodiment, the volute includes a volute casing and a volute cover plate, the volute cover plate being connected to the opening side of the volute casing via connecting lugs.

[0014] In one embodiment, the connecting lug includes a first connecting lug and a second connecting lug. The first connecting lug is disposed on the outer periphery of the opening side, and the second connecting lug is disposed on the outer periphery of the volute cover plate. The first connecting lug and the second connecting lug are fitted and fixed together.

[0015] In one embodiment, the fan assembly further includes a fastening component that connects the first connecting lug and the second connecting lug.

[0016] In one embodiment, the inner wall of the opening side of the volute cover is provided with a positioning female stop, and the outer periphery of the volute cover is provided with a positioning male stop, and the positioning female stop and the positioning male stop are loosely fitted.

[0017] In one embodiment, the volute housing, the volute cover plate, and the air inlet regulating plate are all injection molded parts.

[0018] In one embodiment, the air inlet regulating plate includes a plurality of air inlets with different diameters, and the mounting port is selectively press-fitted to one of the air inlet regulating plates.

[0019] In one embodiment, the end of the air inlet away from the fan body is provided with a rounded chamfer.

[0020] The second technical problem mentioned above is solved by the following technical solution:

[0021] A gas water heater that includes a fan assembly as described in any of the above embodiments.

[0022] The gas water heater described in this utility model has the following advantages compared with the prior art:

[0023] The gas water heater provided by this utility model uses the aforementioned fan assembly. This fan assembly ensures the airtightness between the air inlet regulating plate and the volute by press-fitting the air inlet regulating plate and the volute, preventing gaps caused by deformation at the connection between the air inlet regulating plate and the volute, which would cause air to overflow from the gaps and cause whistling noise and fluid loss. At the same time, it simplifies the assembly process and improves assembly efficiency, thereby reducing the noise of the gas water heater and improving combustion efficiency and assembly efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0025] Figure 1 This is a structural schematic diagram of a wind turbine assembly provided in the prior art;

[0026] Figure 2 This is an exploded view of a wind turbine component provided in the prior art;

[0027] Figure 3 This is a schematic diagram of the structure of the fan assembly provided in a specific embodiment of this utility model;

[0028] Figure 4 This is a cross-sectional view of the fan assembly provided in a specific embodiment of this utility model;

[0029] Figure 5 This is an exploded view of the fan assembly provided in a specific embodiment of this utility model;

[0030] Figure 6 This is a schematic diagram of the first structure of the volute cover plate provided in a specific embodiment of this utility model;

[0031] Figure 7 This is a first structural schematic diagram of the air intake regulating plate provided in a specific embodiment of the present utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the fan body located inside the volute casing according to a specific embodiment of the present utility model;

[0033] Figure 9This is a schematic diagram of the second structure of the volute cover plate provided in a specific embodiment of this utility model;

[0034] Figure 10 This is a schematic diagram of the second structure of the air intake regulating plate provided in a specific embodiment of this utility model.

[0035] In the picture:

[0036] 100. Fan; 200. Volute housing; 300. Adjusting plate; 400. First screw; 500. Second screw;

[0037] 1. Volute housing; 11. Volute housing cover; 111. First connecting lug; 1111. First connecting hole; 112. Positioning female stop; 113. Air outlet slot; 114. Annular channel; 12. Volute housing cover plate; 121. Mounting port; 1211. Crimping female stop; 122. Second connecting lug; 1221. Second connecting hole; 123. Positioning male stop; 124. Extension plate; 13. Air duct; 14. Air outlet;

[0038] 2. Fan body; 21. Fan rotor; 22. Motor;

[0039] 3. Air inlet regulating plate; 31. Air inlet; 311. Rounded chamfer; 32. Press-fit male stop;

[0040] 4. Fastening components; 41. Fastening bolts; 42. Fastening nuts. Detailed Implementation

[0041] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] like Figures 3-5 As shown, this embodiment provides a fan assembly, including a volute 1, a fan body 2, and an air inlet regulating plate 3. The fan body 2 is disposed inside the volute 1, and an air duct 13 is formed between the fan body 2 and the inner wall of the volute 1. The air inlet regulating plate 3 cooperates with the volute 1. By replacing the air inlet regulating plate 3 of different specifications, the fan assembly can meet the requirements of different air intake volumes.

[0044] To address the problems in existing technologies where wind turbine assembly is prone to component deformation, resulting in whistling noise and fluid loss, as well as the complex assembly process leading to low assembly efficiency.

[0045] The fan assembly provided in this embodiment has a mounting port 121 on one side of the volute 1. The air inlet regulating plate 3 is press-fitted to the mounting port 121. The air inlet regulating plate 3 has an air inlet 31 corresponding to the fan body 2, thereby enabling external air to be drawn into the volute 1 through the air inlet 31 via the fan body 2. During the pressing process between the air inlet regulating plate 3 and the mounting port 121, the air inlet regulating plate 3 and the volute cover plate 12 are always subjected to uniform force and are not easily deformed, avoiding the whistling sound caused by gaps at the connection between the air inlet regulating plate 3 and the side wall of the volute 1 due to deformation, and reducing fluid efficiency loss. During assembly, after the volute 1 is assembled, the air inlet regulating plate 3 is pressed into the mounting port 121, which shortens the assembly time and improves the assembly efficiency.

[0046] In one embodiment, the volute 1 includes a volute housing 11 and a volute cover plate 12, with the volute cover plate 12 connected to the open side of the volute housing 11 via connecting lugs. The volute 1 is configured as a split structure. During assembly, the fan body 2 is first installed inside the volute housing 11, forming an annular channel 114 between the fan body 2 and the volute housing 11. Then, the volute cover plate 12 is connected to the open side of the volute housing 11, closing the annular channel 114 to form an air duct 13. This arrangement facilitates the installation and maintenance of the fan body 2.

[0047] In one embodiment, the fan body 2 includes a fan wheel 21 and a motor 22. The fan wheel 21 is rotatably disposed inside the volute cover 11. The motor 22 is used to drive the fan wheel 21 to rotate. The rotation of the fan wheel 21 can introduce external air into the air duct 13 through the air inlet 31.

[0048] In one embodiment, the volute casing 11 has an air outlet slot 113 on its periphery, and the volute cover plate 12 has an extension plate 124 corresponding to the air outlet slot 113. The extension plate 124 covers the air outlet slot 113 to form an air outlet 14, which is connected to the air duct 13 and is set at a 90° angle with the air inlet 31. External air entering the air duct 13 flows out through the air outlet 14, thereby providing the required air intake for the gas water heater.

[0049] In one embodiment, the volute housing 11, the volute cover 12, and the air inlet regulating plate 3 are all injection molded parts. The volute housing 11, the volute cover 12, and the air inlet regulating plate 3 are all injection molded from thermoplastic or thermosetting plastics. The injection-molded volute cover 12 and air inlet regulating plate 3 meet the requirements for direct press-fit assembly, eliminating the need for further precision machining of the press-fit mating positions, further simplifying the production process, and ensuring the sealing of the press-fit positions.

[0050] For example, thermoplastic plastics include polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), etc.; thermosetting plastics include phenolic resin, epoxy resin, unsaturated polyester, etc.

[0051] In one embodiment, such as Figure 5 , Figure 8 and Figure 9 As shown, the connecting lugs include a first connecting lug 111 and a second connecting lug 122. The first connecting lug 111 is located on the outer periphery of the opening side, and the second connecting lug 122 is located on the outer periphery of the volute cover plate 12. The first connecting lug 111 and the second connecting lug 122 are fitted together and fixedly connected to the volute cover plate 12 and the volute housing 11. The fit between the first connecting lug 111 and the second connecting lug 122 ensures the circumferential sealing between the volute housing 11 and the volute cover plate 12.

[0052] Specifically, three first connecting lugs 111 are spaced apart on the outer periphery of the opening side, and correspondingly, three second connecting lugs 122 are spaced apart on the outer periphery of the volute cover plate 12. The three first connecting lugs 111 and the three second connecting lugs 122 are fitted and fixed in a one-to-one correspondence to ensure the stability of the connection between the volute cover plate 12 and the volute housing 11.

[0053] The first connecting lug 111 and the second connecting lug 122 can be fixed by means of detachable connection via fastening component 4 or magnetic component; or by means of adhesive or other fixing methods.

[0054] Preferably, the fan assembly further includes a fastening component 4, which connects the first connecting lug 111 and the second connecting lug 122. The first connecting lug 111 is provided with a first connecting hole 1111, and the second connecting lug 122 is provided with a corresponding second connecting hole 1221. The fastening component 4 includes a fastening bolt 41 and a fastening nut 42. After the fastening bolt 41 passes through the first connecting hole 1111 and the second connecting hole 1221, it is fixed by the fastening nut 42.

[0055] In one embodiment, the inner wall of the opening side of the volute cover 11 is provided with a positioning female stop 112, and the outer periphery of the volute cover 12 is provided with a positioning male stop 123, with the positioning female stop 112 and the positioning male stop 123 loosely fitted. The positioning female stop 112 and the positioning male stop 123 are loosely fitted. When assembling the volute cover 11 and the volute cover plate 12, the two are first axially positioned by the positioning female stop 112 and the positioning male stop 123. Then, the first connecting hole 1111 and the second connecting hole 1221 are aligned to achieve circumferential positioning. Finally, the fastening bolt 41 is passed through the first connecting hole 1111 and the second connecting hole 1221, and the two are fixed by the fastening nut 42. This not only improves the sealing performance between the volute cover 11 and the volute cover plate 12, but also reduces the accuracy requirements of the positioning female stop 112 and the positioning male stop 123. In addition, it facilitates the disassembly and assembly of the volute cover 11 and the volute cover plate 12, which is beneficial for the maintenance of the fan body 2.

[0056] In one embodiment, such as Figure 6 and Figure 7 As shown, a female crimping stop 1211 is provided on the inner circumferential side of the mounting port 121, and a male crimping stop 32 is provided on the outer circumferential side of the air inlet regulating plate 3. The female crimping stop 1211 and the male crimping stop 32 are tightly fitted together. By setting the female crimping stop 1211 and the male crimping stop 32 to be tightly fitted together, two sealing surfaces are formed at the pressing position, one of which is a horizontal sealing surface and the other is a circumferential sealing surface perpendicular to the horizontal sealing surface. This increases the sealing performance at the pressing position, further avoiding the generation of whistling noise and fluid loss. Moreover, it also serves as a pressing limit, ensuring the pressing depth and further improving the sealing performance.

[0057] Of course, in other embodiments, a pressing groove may be provided only on the inner side of the mounting port 121, and the air inlet regulating plate 3 may be pressed into the pressing groove. The bottom of the pressing groove limits the pressing depth of the air inlet regulating plate 3.

[0058] In one embodiment, the air inlet regulating plate 3 includes multiple plates, each with an air inlet 31 of different diameters. The mounting port 121 is selectively press-fitted to one of the air inlet regulating plates 3. During the production of the fan assembly, it is only necessary to design multiple air inlet regulating plates 3 with different diameter air inlets 31, and select the diameter of the air inlet 31 of the air inlet regulating plate 3 fitted to the mounting port 121 according to the required air volume, thereby achieving different performance requirements of the fan assembly.

[0059] In one embodiment, such as Figure 10 As shown, the end of the air inlet 31 furthest from the fan body 2 is provided with a rounded chamfer 311. The rounded chamfer 311 serves two purposes: firstly, it guides the outside air into the air duct 13; secondly, it enhances the aesthetics.

[0060] This embodiment also provides a gas water heater, including the aforementioned fan assembly. This fan assembly ensures the airtightness between the air inlet regulating plate 3 and the volute cover plate 12 by press-fitting the air inlet regulating plate 3 to the volute cover plate 12. This prevents air from overflowing due to gaps caused by deformation at the connection between the air inlet regulating plate 3 and the volute cover plate 12, which could lead to whistling noise and fluid loss. Simultaneously, it simplifies the assembly process and improves assembly efficiency, thereby reducing the noise of the gas water heater and improving combustion and assembly efficiency.

[0061] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A fan assembly, characterized in that, include: A volute (1) is provided with an installation port (121) on one side; The fan body (2) is disposed inside the volute (1); An air inlet regulating plate (3) is press-fitted to the mounting port (121), and the air inlet regulating plate (3) is provided with an air inlet (31) corresponding to the fan body (2).

2. The wind turbine assembly according to claim 1, characterized in that, The mounting port (121) is provided with a crimping female stop (1211) on its inner circumferential side, and the air inlet regulating plate (3) is provided with a crimping male stop (32) on its outer circumferential side. The crimping female stop (1211) and the crimping male stop (32) are tightly fitted together.

3. The wind turbine assembly according to claim 1, characterized in that, The volute (1) includes a volute cover (11) and a volute cover plate (12), and the volute cover plate (12) is connected to the opening side of the volute cover (11) by connecting lugs.

4. The wind turbine assembly according to claim 3, characterized in that, The connecting lugs include a first connecting lug (111) and a second connecting lug (122). The first connecting lug (111) is located on the outer periphery of the opening side, and the second connecting lug (122) is located on the outer periphery of the volute cover plate (12). The first connecting lug (111) and the second connecting lug (122) are fitted and fixed together.

5. The wind turbine assembly according to claim 4, characterized in that, The fan assembly also includes a fastening component (4) that connects the first connecting lug (111) and the second connecting lug (122).

6. The wind turbine assembly according to claim 3, characterized in that, The inner wall of the opening side of the volute cover (11) is provided with a positioning female stop (112), and the outer periphery of the volute cover plate (12) is provided with a positioning male stop (123). The positioning female stop (112) and the positioning male stop (123) are loosely fitted.

7. The wind turbine assembly according to claim 3, characterized in that, The volute casing (11), the volute cover plate (12), and the air inlet regulating plate (3) are all injection molded parts.

8. The wind turbine assembly according to any one of claims 1-7, characterized in that, The air inlet regulating plate (3) includes multiple plates, each having an air inlet (31) of a different diameter. The mounting port (121) is selectively press-fitted to one of the air inlet regulating plates (3).

9. The wind turbine assembly according to any one of claims 1-7, characterized in that, The air inlet (31) has a rounded chamfer (311) at the end away from the fan body (2).

10. A gas-fired water heater, characterized in that, Includes the wind turbine assembly as described in any one of claims 1-9.

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