Volute air guide assembly, fan and range hood

Abstract

The utility model provides a volute air guide assembly, a fan and a range hood. The volute air guide assembly comprises a volute panel, an air guide ring and an elastic fixing piece. The volute panel is provided with an annular part, and a plurality of clamping parts are arranged on the annular part. The air guide ring is provided with an annular guide part, a plurality of clamping matching parts are arranged on the annular guide part, the clamping matching parts and the clamping parts are clamped in a one-to-one correspondence mode, and after the clamping matching parts and the clamping parts are clamped, a clamping-in gap is formed in one side of the air guide ring. And the elastic fixing piece is arranged in the clamping gap and applies an acting force for pressing the annular part to the annular guide part in a pre-tightening state. According to the utility model, the elastic fixing piece is arranged in the clamping gap formed by the clamping part and the clamping matching part, and the elastic fixing piece applies the acting force for pressing the annular part to the annular guide part in the pre-tightening state, so that the problem of shaking of the air guide ring is solved, the attaching tightness of the air guide ring and the volute panel can be effectively enhanced, and the service life of the air guide ring is prolonged. And the assembling operation of the volute air guide assembly can be simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to a volute air guide component, a fan and a range hood. Background Art

[0002] Range hoods have become an indispensable kitchen appliance in modern families. Range hoods usually include a volute, an impeller and an air guide ring. The impeller is arranged in the volute, and the air guide ring is installed at the air inlet of the volute. When the range hood is working, under the action of the impeller, the air flow is introduced from the outside of the volute into the volute through the air guide ring and discharged through the air outlet of the volute.

[0003] However, the volute and the air guide ring are usually fixed to each other by screws or buckle structures, which has the problems of cumbersome installation and loose fastening of the air guide ring. Moreover, after the range hood is used for a long time, the air guide ring is prone to shaking, so that the volute and the air guide ring are not tightly fitted, resulting in air leakage, affecting the exhaust effect of the range hood and easily generating noise. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the utility model, a volute air guide assembly is provided, and the technical solution is as follows.

[0005] The volute air guide assembly includes a volute panel, an air guide ring, and an elastic fixing member. The volute panel has an annular portion, on which a plurality of latching portions are arranged. The air guide ring has an annular guide portion, on which a plurality of latching mating portions are arranged, and the plurality of latching mating portions are respectively latched with the plurality of latching portions in a one-to-one correspondence, and after the two are latched, a latching gap is formed on one side of the air guide ring. The elastic fixing member is arranged in the latching gap and applies a force to the annular guide portion to press the annular portion in a pre-tightened state.

[0006] The volute air guide assembly of the utility model solves the problem of shaking of the air guide ring by arranging the elastic fixing part in the engagement gap formed by the latch part and the latch matching part. Since the elastic fixing part applies a force pressing toward the annular part to the annular guide part in a pre-tightened state, it can not only effectively enhance the tightness of the air guide ring and the volute panel, but also simplify the assembly operation of the volute air guide assembly.

[0007] Exemplarily, the annular portion has a first surface, the latch portion protrudes from the first surface, and the latch portion has an inclined surface inclined relative to the first surface, and the elastic fixing member presses the annular guide portion through the inclined surface so that the annular guide portion is attached to the first surface. In this way, under the action of the inclined surface of the latch portion, the elastic fixing member in a pre-tightened state can well apply a force to the air guide ring, so that the air guide ring and the volute panel fit tightly, further ensuring the tightness of the air guide ring and the volute panel.

[0008] Exemplarily, the annular portion has a second surface opposite to the first surface, the latch portion includes an inclined section extending obliquely from the first surface toward away from the second surface, and the inclined surface is located on the inclined section. In this way, the inclined surface can be directly the surface of the inclined section, which facilitates the processing and molding of the latch portion.

[0009] Exemplarily, the latch portion includes a bent section, which is connected to an end of the inclined section away from the first surface so that the latch portion is hook-shaped. In this way, the bent section can block the elastic fixing member arranged in the insertion gap to prevent the elastic fixing member from falling off from the insertion gap.

[0010] Exemplarily, a through hole is provided on the annular portion, and the through hole passes through from the second surface to the first surface. Thus, by providing the through hole, an installation space can be provided for the end of the elastic fixing member.

[0011] For example, there are multiple through holes, and the multiple through holes correspond to the multiple latch parts one by one, and the latch parts are connected to the hole edges of the corresponding through holes. In this way, the through holes and the latch parts can be formed on the annular part by stamping, and the processing of the through holes and the latch parts on the volute panel can be completed at one time, which effectively simplifies the processing steps of the volute panel and greatly improves the processing efficiency.

[0012] Exemplarily, a wind shield is attached to the second surface, and the wind shield has a shielding portion that shields the through hole. In this way, the through hole can be blocked, the sealing performance of the volute air guide assembly is improved, and the problem of vibration noise caused by air leakage from the through hole is avoided.

[0013] For example, the elastic fixing member includes a rope body and hooks at both ends of the rope body, and the hooks are inserted into the through hole when the rope body is in a pre-tightened state. In this way, according to the telescopic characteristics of the elastic fixing member, the hooks of the elastic fixing member can be hooked on the bottom of the through hole in the pre-tightened state, thereby ensuring the firmness of the fixing of the elastic fixing member, and further ensuring the tightness of the air guide ring and the volute panel.

[0014] Exemplarily, the rope body includes a spring body, both ends of the spring body are connected to a rigid rope body, and the end of the rigid rope body away from the spring body is connected to the hook. In this way, through the combination of the spring body and the rigid rope body, the tension of the elastic fixing member in the pre-tightened state can be greatly improved, further ensuring the firmness of the fixing of the elastic fixing member, and further improving the tightness of the air guide ring and the volute panel.

[0015] Exemplarily, a sunken platform for avoiding the hook is formed on the shielding portion. In this way, the sunken platform can provide a space for the hook to extend into, so that the hook can hook the bottom of the through hole, ensuring the firmness of the elastic fixing piece.

[0016] Exemplarily, a plurality of latch portions are arranged at a middle position of the annular portion and are spaced apart in the circumferential direction.

[0017] Alternatively, a plurality of latching parts are arranged on the outer edge of the annular part and spaced apart in the circumferential direction. In this way, the latching parts can be arranged on the annular part more evenly, ensuring that each area on the annular part can be effectively connected to the air guide ring, effectively improving the firmness and stability of the connection between the volute panel and the air guide ring.

[0018] According to another aspect of the utility model, a fan is provided, comprising a volute body, an impeller and the volute air guide assembly as described above, wherein the volute body and the volute panel form an accommodation cavity, and the impeller is arranged in the accommodation cavity. The fan of the utility model comprises the volute air guide assembly as described above, and since the volute air guide assembly as described above has the beneficial effects as described above, the fan comprising the volute air guide assembly as described above must also have the beneficial effects as described above.

[0019] According to another aspect of the utility model, a range hood is provided, comprising a body and the above-mentioned fan, the fan being arranged on the body. The range hood of the utility model comprises the above-mentioned volute air guide assembly, and since the above-mentioned fan has the above-mentioned beneficial effects, the range hood comprising the above-mentioned fan must also have the above-mentioned beneficial effects.

[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other purposes, features and advantages of the present invention will become more apparent by describing the embodiments of the present invention in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0022] Figure 1 A schematic structural diagram of a volute air guide assembly according to an exemplary embodiment of the utility model is shown;

[0023] Figure 2 for Figure 1 Exploded diagram of the corresponding structure;

[0024] Figure 3 A schematic structural diagram of a volute panel according to an exemplary embodiment of the utility model is shown;

[0025] Figure 4A schematic structural diagram of a latch portion according to an exemplary embodiment of the present utility model is shown;

[0026] Figure 5 A schematic structural diagram of an air guide ring according to an exemplary embodiment of the utility model is shown;

[0027] Figure 6 A schematic structural diagram of an elastic fixing member according to an exemplary embodiment of the utility model is shown;

[0028] Figure 7 A schematic structural diagram of a wind shield according to an exemplary embodiment of the utility model is shown;

[0029] Figure 8 An exploded view of a wind turbine according to an exemplary embodiment of the present invention is shown.

[0030] Among them, the components represented by the reference numerals in the figures are:

[0031] 10. Volute air guide assembly; 11. Volute panel; 111. Annular portion; 1111. First surface; 1112. Second surface; 112. Clamping portion; 1121. Inclined surface; 1122. Inclined section; 1123. Bend section; 113. Through hole; 12. Air guide ring; 121. Annular guide portion; 122. Clamping fitting portion; 13. Snap-in gap; 14. Elastic fixing member; 141. Rope body; 1411. Spring body; 142. Hook; 15. Wind shield; 151. Shielding portion; 1511. Sinking platform; 20. Volute body; 30. Impeller; 40. Accommodating chamber. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more obvious, the exemplary embodiments according to the utility model will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments of the utility model, and it should be understood that the utility model is not limited to the exemplary embodiments described here. Based on the embodiments of the utility model described in the utility model, all other embodiments obtained by those skilled in the art without creative work should fall within the protection scope of the utility model.

[0033] In the following description, a large number of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only illustrates preferred embodiments of the present invention, and the present invention can be implemented without one or more of such details. In addition, in order to avoid confusion with the present invention, some technical features known in the art are not described in detail.

[0034] In order to thoroughly understand the implementation of the utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred implementation of the utility model is described in detail below, but in addition to these detailed descriptions, the utility model can also have other implementations.

[0035] In one embodiment of the present invention, a volute air guide assembly 10 is provided, which can be used in different usage scenarios such as kitchen range hoods or industrial air guide fans. The following will introduce a volute air guide assembly 10 of an embodiment of the present invention in detail with reference to the accompanying drawings.

[0036] See also Figure 1 and Figure 2 The volute air guide assembly 10 includes a volute panel 11, an air guide ring 12 and an elastic fixing member 14. The volute panel 11 has an annular portion 111, and a plurality of latching portions 112 are arranged on the annular portion 111. The air guide ring 12 has an annular guide portion 121, and a plurality of latching mating portions 122 are arranged on the annular guide portion 121. The plurality of latching mating portions 122 are respectively correspondingly engaged with the plurality of latching portions 112, and after the two are engaged, an engagement gap 13 is formed on one side of the air guide ring 12. The elastic fixing member 14 is arranged in the engagement gap 13 and applies a force to the annular guide portion 121 to press against the annular portion 111 in a pre-tightened state. Here, the latching portion 112 may be a protrusion protruding from the annular portion 111, and the latching mating portion 122 may be a hole provided on the annular guide portion 121; in an embodiment not shown, the latching portion 112 and the latching mating portion 122 are not limited to the mating of the protrusion and the hole, as long as the two can be snap-connected.

[0037] The volute panel 11 and the elastic fixing member 14 are respectively arranged on opposite sides of the air guide ring 12. The latching portion 112 on the annular portion 111 and the latching matching portion 122 on the annular guide portion 121 are arranged correspondingly. When the volute panel 11 and the air guide ring 12 are fitted together, each latching portion 112 and the corresponding latching matching portion 122 are latched with each other, and each latching portion 112 and the corresponding latching matching portion 122 are latched with each other, and a latching gap 13 is formed on one side of the air guide ring 12.

[0038] The pre-tightening state means applying a certain pre-tensioning force to the elastic fixing member 14 so that it can maintain the required tension in the normal working state. The pre-tightening state helps the elastic fixing member 14 to apply a force to the annular guide portion 121 when in the working state, so that the volute panel 11 and the air guide ring 12 fit tightly.

[0039] The number of the elastic fixing member 14 can be one or more. When there is one elastic fixing member 14, the elastic fixing member 14 can be sequentially wound around the multiple latching portions 112. When there are multiple elastic fixing members 14, the multiple elastic fixing members 14 can be arranged side by side in the snap-in gap 13.

[0040] The plurality of latching portions 112 may be evenly arranged along the annular portion 111 of the volute panel 11, or may be concentratedly arranged according to different regions divided on the annular portion 111. This application does not make any specific limitation to this.

[0041] In this way, by arranging the elastic fixing part 14 in the insertion gap 13 formed by the latch part 112 and the latch matching part 122, the elastic fixing part 14 applies a force to the annular guide part 121 to press the annular part 111 under the pre-tightened state, thereby solving the problem of the shaking of the air guide ring 12, which can not only effectively enhance the tightness of the air guide ring 12 and the volute panel 11, but also simplify the assembly operation of the volute air guide assembly 10.

[0042] In one embodiment of the present invention, refer to Figure 2 The annular portion 111 has a first surface 1111, the latch portion 112 protrudes from the first surface 1111, and the latch portion 112 has an inclined surface 1121 inclined relative to the first surface 1111, and the elastic fixing member 14 presses the annular guide portion 121 through the inclined surface 1121, so that the annular guide portion 121 is attached to the first surface 1111.

[0043] The first surface 1111 is the side surface of the annular portion 111 close to the elastic fixing member 14. The angle formed between the inclined surface 1121 of the latch portion 112 and the first surface 1111 is an acute angle, and the opening direction of the angle faces away from the middle position of the volute panel 11.

[0044] See also Figure 1 When the elastic fixing member 14 is sequentially wound around a plurality of latching portions 112 and is in a pre-tightened state, the elastic fixing member 14 contacts the inclined surface 1121 of the latching portion 112 and generates a force in the direction of the first surface 1111. This force can make the elastic fixing member 14 fit tightly to the annular portion 111, thereby ensuring the tightness of the fit between the air guide ring 12 and the volute panel 11.

[0045] With such arrangement, under the action of the inclined surface 1121 of the latch portion 112, the elastic fixing member 14 in the pre-tightened state can well apply a force to the air guide ring 12, so that the air guide ring 12 and the volute panel 11 fit tightly, further ensuring the tightness of the fit between the air guide ring 12 and the volute panel 11.

[0046] In one embodiment of the present utility model, in conjunction with reference to Figure 3 and Figure 4 The annular portion 111 has a second surface 1112 opposite to the first surface 1111 , and the latch portion 112 includes an inclined section 1122 extending obliquely from the first surface 1111 toward and away from the second surface 1112 , and the inclined surface 1121 is located on the inclined section 1122 .

[0047] The second surface 1112 is a side surface of the annular portion 111 in a direction away from the elastic fixing member 14 .

[0048] With such configuration, the inclined surface 1121 can be directly the surface of the inclined section 1122 , which facilitates the processing and forming of the latch portion 112 .

[0049] In one embodiment of the present invention, refer to Figure 4 The latch portion 112 includes a bent section 1123 , and the bent section 1123 is connected to an end of the inclined section 1122 away from the first surface 1111 so that the latch portion 112 is in a hook shape.

[0050] With such a configuration, the bent section 1123 can block the elastic fixing member 14 disposed in the insertion gap 13 , thereby preventing the elastic fixing member 14 from falling out of the insertion gap 13 .

[0051] The bending section 1123 and the inclined section 1122 of the latch portion 112 can be integrally formed, which can simplify the processing of the latch portion 112 and maintain the connection stability between the bending section 1123 and the inclined section 1122 .

[0052] In one embodiment of the present invention, refer to Figure 3 The annular portion 111 is provided with a through hole 113, and the through hole 113 passes through from the second surface 1112 to the first surface 1111. In this way, the through hole 113 can provide an installation space for the end of the elastic fixing member 14.

[0053] In one embodiment of the present utility model, in conjunction with reference to Figure 3 and Figure 5 There are multiple through holes 113 , and the multiple through holes 113 correspond to the multiple latching parts 112 one by one. The latching parts 112 are connected to the hole edges of the corresponding through holes 113 .

[0054] The through hole 113 and the latch portion 112 on the annular portion 111 can be formed by stamping in one step during the processing, which effectively improves the processing efficiency.

[0055] Optionally, the number of through holes 113 can be one, in which case the through hole 113 can correspond to the position of any one of the multiple latching mating parts 122, and the elastic fixing member 14 can be fixed in the through hole 113 after being wound around the multiple latching parts 112. In this way, the through hole 113 and the latching part 112 corresponding to the through hole 113 can be formed on the annular part 111 by stamping, thereby effectively simplifying the processing steps of the volute panel 11 and greatly improving the processing efficiency. For other latching mating parts 122 that do not correspond to the through hole 113, they can be formed on the annular part 111 by welding, bonding, etc.

[0056] Of course, when the number of the through hole 113 is one, it may not correspond to the position of any one of the multiple latch fitting parts 122. In this case, the through hole 113 needs to be processed separately.

[0057] In one embodiment of the present invention, refer to Figure 7 A wind shielding cover 15 is attached to the second surface 1112 , and the wind shielding cover 15 has a shielding portion 151 for shielding the through hole 113 .

[0058] The arrangement of the wind shielding cover 15 corresponding to the annular portion 111 of the volute panel 11 can effectively prevent air leakage from occurring when the volute air guide assembly 10 is working normally.

[0059] Optionally, the wind shield 15 can be fixed to the second surface 1112 of the annular portion 111 by welding, or the two can be detachably connected. Exemplarily, the wind shield 15 can be fixed to the second surface 1112 of the annular portion 111 by snapping.

[0060] The number and position of the shielding parts 151 can correspond to the number and position of the through holes 113, and the cross-sectional area of ​​the shielding parts 151 is larger than the cross-sectional area of ​​the through holes 113. Therefore, the wind shielding cover 15 can tightly seal the through holes 113 to ensure that the volute air guide assembly 10 can effectively reduce air leakage when working.

[0061] With such arrangement, the through hole 113 can be blocked, thereby improving the sealing performance of the volute air guide assembly 10 and avoiding the problem of vibration and noise caused by air leakage from the through hole 113.

[0062] In one embodiment of the present invention, refer to Figure 6 The elastic fixing member 14 includes a rope body 141 and hooks 142 located at both ends of the rope body 141. The hooks 142 are inserted into the through holes 113 when the rope body 141 is in a pre-tightened state.

[0063] The rope body 141 may have a certain elasticity. In the pre-tightened state, the rope body 141 undergoes elastic deformation and generates tension. At this time, the hook portion 142 of the elastic fixing member 14 is inserted into the through hole 113 , so that the elastic fixing member 14 can be fixed on the air guide ring 12 more firmly.

[0064] With such arrangement, the hook 142 of the elastic fixing member 14 can be hooked onto the bottom of the through hole 113 in a pre-tightened state according to the telescopic characteristics of the elastic fixing member 14, thereby ensuring the firmness of the fixing of the elastic fixing member 14 and further ensuring the tightness of the air guide ring 12 and the volute panel 11.

[0065] In one embodiment of the present invention, refer to Figure 6 The rope body 141 includes a spring body 1411 , both ends of the spring body 1411 are connected to a rigid rope body, and the end of the rigid rope body away from the spring body 1411 is connected to the hook portion 142 .

[0066] Such a configuration, through the combination of the spring body 1411 and the rigid rope body, can greatly increase the tension of the elastic fixing member 14 in the pre-tightened state, further ensure the firmness of the fixing of the elastic fixing member 14, and further increase the tightness of the fit between the air guide ring 12 and the volute panel 11.

[0067] In one embodiment of the present invention, refer to Figure 7 A sunken platform 1511 is formed on the shielding portion 151 to avoid the hook portion 142 .

[0068] The shielding portion 151 is provided with a recessed platform 1511 in a direction away from the second surface 1112, so that when the wind shield cover 15 and the volute panel 11 are attached to each other, an accommodating cavity 40 can be formed at the position of the shielding portion 151, so that the hook portion 142 of the elastic fixing member 14 can more easily hook the bottom of the through hole 113.

[0069] With such arrangement, the sink 1511 can provide a space for the hook 142 to extend into, so that the hook 142 can hook the bottom of the through hole 113 , thereby ensuring the firmness of the elastic fixing member 14 .

[0070] In one embodiment of the present invention, refer to Figure 3 A plurality of latching portions 112 are arranged at a middle position of the annular portion 111 and are spaced apart along the circumferential direction, or a plurality of latching portions 112 are arranged at an outer edge of the annular portion 111 and are spaced apart along the circumferential direction.

[0071] Multiple latch portions 112 are spaced apart in the circumferential direction along the middle portion of the annular portion 111, so that the volute panel 11 and the air guide ring 12 can be effectively fixed in different circumferential directions and the tension of the elastic fixing member 14 on the air guide ring 12 can be more uniform.

[0072] When multiple latch portions 112 are arranged at intervals along the circumferential direction of the outer edge of the annular portion 111, the latch portions 112 can be directly used to latch and fix the volute panel 11 and the air guide ring 12 to each other. At this time, the direction of the bending section 1123 of the latch portion 112 is away from the middle position of the annular portion 111, and only one through hole 113 can be set on the annular portion 111 and the annular guide portion to provide an installation space for the end of the elastic fixing member 14, so as to reduce the difficulty of processing and manufacturing the volute panel 11 and the air guide ring 12 while ensuring that the elastic fixing member 14 is firmly connected.

[0073] Such a configuration allows the latching portion 112 to be arranged more evenly on the annular portion 111 , ensuring that each area on the annular portion 111 can be effectively connected to the air guide ring 12 , thereby effectively improving the firmness and stability of the connection between the volute panel 11 and the air guide ring 12 .

[0074] In one embodiment of the present invention, a fan is also provided. Figure 8 , including a volute body 20 , an impeller 30 and the volute air guide assembly 10 as described above, the volute body 20 and the volute panel 11 form an accommodating cavity 40 , and the impeller 30 is disposed in the accommodating cavity 40 .

[0075] The fan of the utility model includes the volute air guide assembly 10 as described above. Since the volute air guide assembly 10 has the beneficial effects as described above, the fan including the volute air guide assembly 10 as described above must also have the beneficial effects as described above.

[0076] In one embodiment of the utility model, a range hood is provided, comprising a machine body and the above-mentioned fan, wherein the fan is arranged on the machine body.

[0077] The range hood of the present invention includes a fan, and the fan includes the volute air guide assembly 10 as described above. Since the volute air guide assembly 10 has the beneficial effects as described above, the range hood including the volute air guide assembly 10 must also have the beneficial effects as described above.

[0078] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present invention thereto. A person of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as required by the appended claims.

[0079] For ease of description, the term "connection" may be used here to describe the relationship between one or more elements or features shown in the figures and other elements or features. It should be understood that "connection" may include direct connection or indirect connection via other elements or features, and this article is intended to include all of these situations.

[0080] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0081] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0082] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A volute air guide assembly, It is characterized in that include: A volute panel, wherein the volute panel has an annular portion, and a plurality of latching portions are arranged on the annular portion; An air guide ring, wherein the air guide ring has an annular guide portion, and a plurality of latching matching portions are arranged on the annular guide portion, and the plurality of latching matching portions are respectively latched with the plurality of latching portions in a one-to-one correspondence, and after the two are latched, a latching gap is formed on one side of the air guide ring; as well as An elastic fixing member is arranged in the insertion gap and applies a force to the annular guide portion to press the annular portion in a pre-tightened state.

2. The volute air guide assembly according to claim 1, It is characterized in that The annular portion has a first surface, the latch portion protrudes from the first surface, and the latch portion has an inclined surface inclined relative to the first surface, and the elastic fixing member presses the annular guide portion through the inclined surface to make the annular guide portion stick to the first surface.

3. The volute air guide assembly according to claim 2, It is characterized in that The annular portion has a second surface opposite to the first surface, the locking portion includes an inclined section extending obliquely from the first surface toward and away from the second surface, and the inclined surface is located on the inclined section.

4. The volute air guide assembly according to claim 3, It is characterized in that The latch portion comprises a bent section, and the bent section is connected to an end of the inclined section away from the first surface so that the latch portion is in a hook shape.

5. The volute air guide assembly according to claim 3, It is characterized in that The annular portion is provided with a through hole, and the through hole penetrates from the second surface to the first surface.

6. The volute air guide assembly according to claim 5, It is characterized in that There are a plurality of through holes, and the plurality of through holes correspond to the plurality of latch parts one by one, and the latch parts are connected to the hole edges of the corresponding through holes.

7. The volute air guide assembly according to claim 5, It is characterized in that A wind shielding cover is attached to the second surface, and the wind shielding cover has a shielding portion shielding the through hole.

8. The volute air guide assembly according to claim 7, It is characterized in that The elastic fixing member comprises a rope body and hooks located at two ends of the rope body, and the hooks are inserted into the through holes when the rope body is in the pre-tightened state.

9. The volute air guide assembly according to claim 8, It is characterized in that The rope body comprises a spring body, both ends of the spring body are connected to a rigid rope body, and an end of the rigid rope body away from the spring body is connected to the hook part.

10. The volute air guide assembly according to claim 8, It is characterized in that The shielding portion is formed with a sunken platform for avoiding the hook portion.

11. The volute air guide assembly according to claim 1, It is characterized in that The plurality of latching portions are arranged at the middle of the annular portion and are spaced apart along the circumferential direction, or the plurality of latching portions are arranged at the outer edge of the annular portion and are spaced apart along the circumferential direction.

12. A fan, It is characterized in that It comprises a volute body, an impeller and a volute air guide assembly as claimed in any one of claims 1 to 11, wherein the volute body and the volute panel form an accommodating cavity, and the impeller is arranged in the accommodating cavity.

13. A range hood, It is characterized in that It comprises a machine body and the fan as claimed in claim 12, wherein the fan is arranged on the machine body.

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