Volute assembly, fan and range hood

Abstract

The utility model provides a volute assembly, a fan and a range hood. The volute assembly comprises a shell, a fixing piece and a sound absorption piece. An air guide cavity is defined by the shell, and a connecting part extends out of the air guide cavity on the shell. And the fixing piece is connected with the connecting part. The sound absorption piece is attached to at least part of the outer side wall of the shell through the fixing piece. Thus, the sound absorption piece can be firmly fixed to the outer side wall of the air guide cavity through the fixing piece, the two ends of the fixing piece can be connected with the connecting parts outside the air guide cavity so as to prevent the fixing piece from invading into the air guide cavity, and therefore the sound absorption effect is guaranteed, and meanwhile the sound absorption effect is improved. And the overall firmness of the volute assembly and the air guide effect of the volute assembly are effectively improved.

Description

Technical Field

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

[0002] Centrifugal fans have been widely used in oil fume purification equipment or air purification equipment, and have become an indispensable mechanical equipment in people's lives or work.

[0003] When a centrifugal fan is running, the turbulence generated by the air flow as well as the vibration and friction generated during operation will generate a lot of noise, which will have a great impact on people's lives or work.

[0004] Currently, sound-absorbing material is usually fixed to the outer wall of the centrifugal fan housing to reduce the noise generated by the centrifugal fan. However, the mounting bracket used to fix the sound-absorbing material will pass through the sound-absorbing material and invade the interior of the air duct, thereby having a significant impact on the structural strength and air-guiding effect of the centrifugal fan. Utility Model Content

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a volute assembly is provided, and the technical solution is as follows.

[0006] The volute assembly includes a housing, a fixing member, and a sound-absorbing member. The housing encloses an air-guiding cavity, and a connecting portion extends outward from the housing toward the air-guiding cavity. The fixing member is connected to the connecting portion. The sound-absorbing member is attached to at least a portion of the outer wall of the housing via the fixing member.

[0007] The volute assembly of the present invention can firmly fix the sound-absorbing component on the outer wall of the air guide cavity through the fixing component, and the two ends of the fixing component can be respectively connected to the connecting parts outside the air guide cavity to prevent the fixing component from invading the air guide cavity. In this way, while ensuring the sound absorption effect, the overall firmness of the volute assembly and the air guide effect of the volute assembly are effectively improved.

[0008] Exemplarily, the housing includes a panel, a first side panel, and a second side panel. The panel includes a first side and a second side, the first side being opposite to the second side, the first side panel being connected to the first side, the second side panel being connected to the second side, the connecting portion including a first connecting portion and a second connecting portion, the first connecting portion extending from the first side toward a direction away from the second side, and the second connecting portion extending from the second side toward a direction away from the first side, and the two ends of the fixing member being connected to the first connecting portion and the second connecting portion, respectively. In this way, the two ends of the fixing member can be connected to the first connecting portion and the second connecting portion of the panel, respectively, thereby preventing the two ends of the fixing member from damaging the panel, the first side panel, and the second side panel, thereby improving the structural integrity and overall firmness of the housing.

[0009] For example, the fixing member includes a main body, a first clamping portion, and a second clamping portion, the first clamping portion and the second clamping portion being formed at both ends of the main body, respectively. The first connecting portion is provided with a first connecting hole, and the second connecting portion is provided with a second connecting hole. The first clamping portion is clamped with the first connecting hole, and the second clamping portion is clamped with the second connecting hole. In this way, the first clamping portion and the second clamping portion of the fixing member can respectively clamp with the first connecting hole and the second connecting hole on the connecting portion, thereby achieving a detachable connection between the fixing member and the housing, effectively improving the convenience of disassembly and assembly of the fixing member, and thereby improving the practicality of the volute assembly.

[0010] For example, the first clamping portion includes a first section, a transition connecting section, and a second section. The first section is bent from one end of the main body, and the second section is connected to the end of the first section away from the main body through the transition connecting section. The second section is switchable between a first state and a second state relative to the first section. The first connecting hole includes a first hole portion and a second hole portion. The first hole portion and the second hole portion are relative to each other so that the cross section of the first connecting hole is convex, and the second hole portion has an abutment surface formed on the inner side wall facing the first hole portion. The first section is inserted into the first hole portion, and the second section is inserted into the second hole portion. When in the first state, the second section abuts against the abutment surface, and when in the second state, the second section is disengaged from the abutment surface. In this way, when the second section is in the first state relative to the first section, the first clamping portion can be firmly engaged with the first connecting hole. When the second section is in the second state relative to the first section, the first clamping portion can be easily disengaged from the first connecting hole. While ensuring the convenience of assembly and disassembly between the first clamping portion and the first connecting portion, the connection structure between the two is simplified, reducing the manufacturing cost and processing difficulty of the fixing member.

[0011] For example, a step is formed on the second section, and when the second section is in the first state, the step abuts against the bottom surface of the first connecting portion. Thus, when the second section is in the first state, the step on the second section can abut against the bottom surface of the abutting portion, thereby preventing the first clamping portion from being separated from the first connecting portion, effectively improving the firmness of the connection between the first clamping portion and the first connecting portion, and further improving the reliability of the connection between the fixing member and the housing.

[0012] For example, a trigger portion extends from one end of the second section, distal from the transitional connecting section, in a direction away from the first section. When the second section is in the first state, the projection of the trigger portion onto the connecting portion is at least partially located outside the second hole. This allows the user to quickly disengage the first engaging portion from the first connecting hole by pressing the trigger portion, effectively improving the ease of disassembly of the fastener. Furthermore, the trigger portion prevents the first engaging portion from dislodging from the first connecting hole when moving toward the air guide cavity, effectively improving the securement and reliability of the connection between the housing and the fastener.

[0013] For example, the second clamping portion includes a third section and a fourth section, wherein the third section bends from one end of the main body, and the fourth section bends from the end of the third section away from the main body. Thus, the third and fourth sections enable a clamping connection between the second clamping portion and the second connecting hole, effectively simplifying the connection structure of the second clamping portion and reducing manufacturing costs.

[0014] For example, one end of the fixing member is rotatably connected to the connecting portion, and the other end of the fixing member is clipped into the connecting portion. This allows one end of the fixing member to be rotatably connected to the connecting portion, effectively increasing the flexibility and convenience of the fixing member during assembly and disassembly. It also allows the fixing member to be adapted for use with sound absorbing members of varying thicknesses, effectively enhancing the fixing member's universality.

[0015] For example, the fixing member includes a rotating shaft disposed on the connecting portion and a rotating portion sleeved on the rotating shaft, such that one end of the fixing member is pivotally connected to the connecting portion via the rotating portion and the rotating shaft. This allows the fixing member to rotate about the rotating shaft via the rotating portion to secure or release the sound absorbing member, further enhancing the flexibility and convenience of attaching and detaching the fixing member.

[0016] For example, the housing is provided with an air outlet connecting the exterior with the air guide cavity, and the sound absorbing member is positioned near the air outlet. This arrangement allows the sound absorbing member to be positioned near the air outlet, thereby significantly reducing the manufacturing cost of the volute assembly and improving its sound absorption efficiency while ensuring the sound absorption effect of the volute assembly.

[0017] According to another aspect of the present invention, a fan is provided, comprising an impeller and the volute assembly as described above, wherein the impeller is disposed within an air guide cavity. Thus, since the volute assembly has the aforementioned beneficial effects, a fan including the volute assembly will also necessarily have the aforementioned beneficial effects.

[0018] According to another aspect of the present invention, a range hood is provided, comprising a housing and the aforementioned fan, the fan being mounted on the housing. As the aforementioned fan has the aforementioned beneficial effects, a range hood comprising the aforementioned fan will also necessarily have the aforementioned beneficial effects.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, 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 present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other purposes, features, and advantages of the present invention will become more apparent through a more detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are intended 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 are not intended to limit the present invention. In the drawings, the same reference numerals generally represent the same components or steps.

[0021] Figure 1 A first perspective view of a volute assembly according to an exemplary embodiment of the present invention is shown;

[0022] Figure 2 An exploded view of a volute assembly according to an exemplary embodiment of the present invention is shown;

[0023] Figure 3 A second perspective view of a volute assembly according to an exemplary embodiment of the present invention is shown;

[0024] Figure 4 shows a third perspective view of a volute assembly according to an exemplary embodiment of the present invention;

[0025] Figure 5 shows a perspective view of a fixing member according to an exemplary embodiment of the present invention;

[0026] Figure 6 shows a side view of a volute assembly according to an exemplary embodiment of the present invention;

[0027] Figure 7 Shown Figure 6 The enlarged partial view corresponding to position I in the middle;

[0028] Figure 8 Shown Figure 1 The enlarged partial view corresponding to position II in the middle;

[0029] Figure 9 shows a perspective view of a volute assembly according to another exemplary embodiment of the present invention;

[0030] Figure 10 Shown Figure 9 A magnified partial view corresponding to position III in the middle.

[0031] Among them, the components represented by the reference numerals in the figures are:

[0032] 1. Shell; 11. Enclosure; 12. First side panel; 13. Second side panel; 14. Air outlet; 2. Connecting portion; 21. First connecting portion; 211. First connecting hole; 212. First hole portion; 213. Second hole portion; 214. Abutting surface; 22. Second connecting portion; 221. Second connecting hole; 3. Fixing member; 31. Main body; 32. First clamping portion; 321. First section; 322. Transition connecting section; 323. Second section; 324. Step portion; 325. Triggering portion; 33. Second clamping portion; 331. Third section; 332. Fourth section; 4. Rotating shaft; 5. Rotating portion; 6. Sound absorbing member; 7. Mounting bracket. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more apparent, the following exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention. It should be understood that the present invention is not limited to the exemplary embodiments described herein. Based on the embodiments of the present invention described in this utility model, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present utility model.

[0034] In the following description, numerous details are provided to facilitate a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, and that the present invention may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well known in the art have not been described in detail.

[0035] To thoroughly understand the embodiments of the present invention, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0036] In one embodiment of the present invention, a volute assembly is provided, which can ensure the sound absorption effect while improving the overall firmness of the volute assembly and the wind guide effect of the volute assembly. The following will be described in detail with reference to the accompanying drawings.

[0037] like Figure 1 and Figure 2As shown, the volute assembly includes a housing 1, a fixing member 3, and a sound-absorbing member 6. The housing 1 encloses an air guide cavity, and a connecting portion 2 extends from the housing 1 toward the outside of the air guide cavity. The fixing member 3 is connected to the connecting portion 2. The sound-absorbing member 6 is attached to at least a portion of the outer wall of the housing 1 via the fixing member 3.

[0038] The shape of the fixing member 3 can be arched or U-shaped, etc., and this application does not specifically limit the shape of the fixing member 3.

[0039] Both ends of the fixing member 3 can be connected to the connecting portion 2 in a detachable manner, and the sound absorbing member 6 is attached to the outer wall of the housing 1 .

[0040] The sound absorbing member 6 can reduce the noise or echo generated by the housing 1 or the equipment in the housing 1 during operation. The sound absorbing member 6 can be made of a sound absorbing material, such as foam or mineral wool, etc., which is not specifically limited in this application.

[0041] The sound absorbing member 6 may be in the shape of a plate, and the plate surface of the sound absorbing member 6 may be attached to the outer wall of the housing 1 to reduce noise or echo as much as possible.

[0042] The volute assembly of the present invention can firmly fix the sound-absorbing component 6 on the outer wall of the air-guiding cavity through the fixing component 3, and the two ends of the fixing component 3 can be respectively connected to the connecting portion 2 outside the air-guiding cavity to prevent the fixing component 3 from invading the air-guiding cavity. In this way, while ensuring the sound-absorbing effect, the overall firmness of the volute assembly and the air-guiding effect of the volute assembly are effectively improved.

[0043] In some embodiments, as Figures 2 to 4 As shown, the shell 1 has a surrounding plate 11, a first side plate 12 and a second side plate 13, the surrounding plate 11 has a first side and a second side, the first side is opposite to the second side, the first side plate 12 is connected to the first side, and the second side plate 13 is connected to the second side, the connecting part 2 includes a first connecting part 21 and a second connecting part 22, the first connecting part 21 extends from the first side toward the direction away from the second side, and the second connecting part 22 extends from the second side toward the direction away from the first side, and the two ends of the fixing member 3 are respectively connected to the first connecting part 21 and the second connecting part 22.

[0044] The plate surface of the first side plate 12 and the plate surface of the second side plate 13 can be arranged in parallel and connected by the enclosure 11. The shape of the enclosure 11 can be adapted to the outer contour of the first side plate 12 and the second side plate 13. Figure 3 As shown, the outer contours of the first side plate 12 and the second side plate 13 are arc-shaped, and the shape of the enclosure 11 can also be arc-shaped.

[0045] In addition to being formed on the above-mentioned enclosure 11, the first connection portion 21 and the second connection portion 22 can also be formed on the first side panel 12 and the second side panel 13 respectively, that is, the first connection portion 21 can be formed on the first side panel 12, and the second connection portion 22 can be formed on the second side panel 13.

[0046] In some other embodiments, a first reinforcement portion (not shown in the figure) and a second reinforcement portion (not shown in the figure) are respectively provided in the direction away from the first side panel 12 and the second side panel 13, the first reinforcement portion can abut against the first connecting portion 21, and the second reinforcement portion can abut against the second connecting portion 22, one end of the fixing member 3 is connected to the first reinforcement portion through the first connecting portion 21, and the other end of the fixing member 3 is connected to the second reinforcement portion through the second connecting portion 22.

[0047] There can be multiple fixing members 3, and the multiple fixing members 3 are arranged at intervals along the length direction of the enclosure 11 to ensure the attachment effect of the sound absorbing member 6.

[0048] In the above embodiment, the two ends of the fixing member 3 can be connected to the first connecting portion 21 and the second connecting portion 22 of the enclosure 11 respectively, thereby avoiding the situation where the two ends of the fixing member 3 damage the enclosure 11, the first side panel 12 and the second side panel 13, thereby improving the structural integrity and overall firmness of the shell 1.

[0049] In some embodiments, as Figure 2 、 Figures 5 to 7 As shown, the fixing member 3 includes a main body portion 31, a first clamping portion 32 and a second clamping portion 33. The first clamping portion 32 and the second clamping portion 33 are respectively formed at both ends of the main body portion 31. A first connecting hole 211 is provided on the first connecting portion 21, and a second connecting hole 221 is provided on the second connecting portion 22. The first clamping portion 32 is clamped with the first connecting hole 211, and the second clamping portion 33 is clamped with the second connecting hole 221.

[0050] The main body 31 of the fixing member 3 can abut against the sound absorbing member 6 to limit the movement of the sound absorbing member 6. The main body 31 can be in the shape of a long strip, and the length direction of the main body 31 can be perpendicular to the length direction of the enclosure 11.

[0051] The number of the first connection parts 21 may correspond to the number of the first connection holes 211 . Similarly, the number of the second connection parts 22 may correspond to the number of the second connection holes 221 .

[0052] In the above embodiment, the first clamping portion 32 and the second clamping portion 33 of the fixing member 3 can be respectively clamped with the first connecting hole 211 and the second connecting hole 221 on the connecting portion 2, thereby realizing a detachable connection between the fixing member 3 and the shell 1, effectively improving the convenience of disassembly and assembly of the fixing member 3, and thereby improving the practicality of the volute assembly.

[0053] In some embodiments, as Figure 8 As shown, the first clamping portion 32 has a first section 321, a transition connecting section 322 and a second section 323. The first section 321 is bent from one end of the main body 31, and the second section 323 is connected to the end of the first section 321 away from the main body 31 through the transition connecting section 322. The second section 323 can switch between a first state and a second state relative to the first section 321; the first connecting hole 211 has a first hole portion 212 and a second hole portion 213. The first hole portion 212 and the second hole portion 213 are relative to each other so that the cross section of the first connecting hole 211 is "convex" shaped, and an abutting surface 214 is formed on the inner side wall of the second hole portion 213 facing the first hole portion 212; the first section 321 is penetrated by the first hole portion 212, and the second section 323 is penetrated by the second hole portion 213. When the second section 323 is in the first state, it abuts against the abutting surface 214, and when the second section 323 is in the second state, it is separated from the abutting surface 214.

[0054] The transition connecting section 322 may be U-shaped, and both ends of the U-shaped transition connecting section 322 are respectively connected to the first section 321 and the second section 323 so that the first section 321 and the second section 323 are parallel.

[0055] The first state may be represented by a state in which the first clamping portion 32 is clamped with the first connection hole 211 , and the second state may be represented by a state in which the first clamping portion 32 is disengaged from the first connection hole 211 .

[0056] The user can apply a force to the second section 323, and the second section 323 can move toward the first section 321 under the force. At this time, the second section 323 can be separated from the abutting surface 214 of the second hole portion 213, so that the second section 323 can be in the second state relative to the first section 321. When the second section 323 is not subjected to a force, the second section 323 can be located away from the first section 321. At this time, the second section 323 can be engaged with the abutting surface 214 of the second hole portion 213, so that the second section 323 can be in the first state relative to the first section 321.

[0057] The first engaging portion 32 can be made of an elastic material, particularly the transition connecting section 322 and the second section 323, so that the second section 323 can switch between a first state and a second state relative to the first section 321. For example, the first engaging portion 32 can be made of an elastic plastic such as polyethylene or polypropylene, which is not specifically limited in this application.

[0058] In the above embodiment, when the second section 323 is in the first state relative to the first section 321, the first clamping portion 32 can be firmly clamped with the first connecting hole 211, and when the second section 323 is in the second state relative to the first section 321, the first clamping portion 32 can be easily disengaged from the first connecting hole 211. In this way, while ensuring the convenience of disassembly and assembly between the first clamping portion 32 and the first connecting portion 21, the connection structure between the two is simplified, thereby reducing the manufacturing cost and processing difficulty of the fixing member 3.

[0059] In some embodiments, as Figure 5 and Figure 8 As shown, a step portion 324 is formed on the second section 323 . When the second section 323 is in the first state, the step portion 324 abuts against the bottom surface of the first connecting portion 21 .

[0060] The first connecting portion 21 may have an upper surface and a bottom surface that are relatively arranged, and the step portion 324 may abut against the bottom surface of the first connecting portion 21 to limit the first clamping portion 32 from moving in a direction away from the air guide cavity, thereby preventing the first clamping portion 32 from being separated from the first connecting portion 21.

[0061] When the user presses the second section 323 to switch the second section 323 from the first state to the second state, the step portion 324 can move with the second section 323 in the direction close to the first section 321, thereby causing the step portion 324 to disengage from the bottom surface of the first connecting portion 21, and then causing the second section 323 to disengage from the first hole portion 212.

[0062] In the above embodiment, when the second section 323 is in the first state, the step portion 324 on the second section 323 can abut against the bottom surface of the abutting portion, thereby avoiding the first clamping portion 32 from being separated from the first connecting portion 21, effectively improving the firmness of the connection between the first clamping portion 32 and the first connecting portion 21, and thereby improving the reliability of the connection between the fixing member 3 and the shell 1.

[0063] In some embodiments, as Figure 5 and Figure 8 As shown, a trigger portion 325 extends from one end of the second section 323 away from the transition connecting section 322 in a direction away from the first section 321 . When the second section 323 is in the first state, the projection of the trigger portion 325 onto the connecting portion 2 is at least partially located outside the second hole portion 213 .

[0064] A friction layer may be provided on the end surface of the trigger portion 325 away from the first section 321 . When the user presses the trigger portion 325 , the friction layer may increase the friction between the user and the trigger portion 325 , thereby ensuring that the user can better apply force to the second section 323 .

[0065] When the first clamping portion 32 is clamped to the first connecting hole 211, the projection of the triggering portion 325 onto the connecting portion 2 is at least partially located outside the second hole portion 213, so that when the first clamping portion 32 moves toward the direction close to the air guide cavity, the bottom surface of the triggering portion 325 can abut against the upper surface of the first connecting portion 21, thereby preventing the first clamping portion 32 from falling out of the first connecting hole 211.

[0066] In the above embodiment, the user can quickly disengage the first engaging portion 32 from the first connecting hole 211 by pressing the trigger portion 325, effectively improving the convenience of disassembly of the fixing member 3. The trigger portion 325 also prevents the first engaging portion 32 from falling out of the first connecting hole 211 when moving toward the air guide cavity, effectively improving the firmness and reliability of the connection between the housing 1 and the fixing member 3.

[0067] In some embodiments, as Figures 5 to 7 As shown, the second clamping portion 33 has a third section 331 and a fourth section 332 . The third section 331 is bent from one end of the main body 31 , and the fourth section 332 is bent from one end of the third section 331 away from the main body 31 .

[0068] The third section 331 and the fourth section 332 can be plate-shaped, and the main body 31 can be integrally formed with the third section 331 and the fourth section 332 of the second clamping portion 33. The third section 331 and the fourth section 332 can cooperate to form an L-shaped structure.

[0069] When the second engaging portion 33 is engaged with the second connecting hole 221 , the third section 331 passes through the second hole 213 and the fourth section 332 abuts against the second connecting portion 22 .

[0070] In the above embodiment, the second clamping portion 33 and the second connection hole 221 can be clamped together by the third section 331 and the fourth section 332 , which effectively simplifies the connection structure of the second clamping portion 33 and reduces manufacturing costs.

[0071] In some embodiments, as Figure 9 As shown, one end of the fixing member 3 is rotatably connected to the connecting portion 2 , and the other end of the fixing member 3 is clamped to the connecting portion 2 .

[0072] In the above embodiment, one end of the fixing member 3 can be rotatably connected to the connecting portion 2, which effectively increases the flexibility and convenience of disassembly and assembly of the fixing member 3, and also allows the fixing member 3 to be suitable for sound-absorbing members 6 of different thicknesses, effectively improving the universality of the fixing member 3.

[0073] In some embodiments, as Figure 10As shown, the fixing member 3 includes a rotating shaft 4 provided on the connecting portion 2 and a rotating portion 5 sleeved on the rotating shaft 4 , so that one end of the fixing member 3 is pivotally connected to the connecting portion 2 through the rotating portion 5 and the rotating shaft 4 .

[0074] The two ends of the rotating shaft 4 can be connected to the connecting portion 2 respectively through the mounting bracket 7. A bearing can be provided between the rotating portion 5 and the rotating shaft 4 to improve the rotation efficiency of the fixing member 3 and the connecting portion 2.

[0075] In the above embodiment, one end of the fixing member 3 can be rotated around the rotating shaft 4 through the rotating portion 5 to fix or release the sound absorbing member 6, further improving the flexibility and convenience of disassembly of the fixing member 3.

[0076] In some embodiments, as Figure 1 and Figure 2 As shown, an air outlet 14 communicating with the outside and the air guide cavity is provided on the housing 1 , and the sound absorbing member 6 is arranged close to the air outlet 14 .

[0077] When the volute assembly is in operation, the gas in the air guide cavity can be discharged through the air outlet 14. When the gas flows through the air outlet 14, it is easy to generate noise. The sound absorbing component 6 can be attached to the enclosure 11 near the air outlet 14 to reduce the noise at the air outlet 14.

[0078] In some other embodiments, the sound absorbing member 6 may be attached to the entire enclosure 11 to ensure the sound absorbing effect of the sound absorbing member 6 .

[0079] In the above embodiment, the sound absorbing member 6 can be arranged close to the air outlet 14, which ensures the sound absorption effect of the volute assembly while greatly reducing the manufacturing cost of the volute assembly and improving the sound absorption efficiency.

[0080] According to another aspect of the present invention, a fan is provided, comprising an impeller and the volute assembly as described above, wherein the impeller is disposed in the air guide cavity.

[0081] The fan of the present invention includes the volute assembly as described above. Since the volute assembly has the beneficial effects as described above, the fan including the volute assembly must also have the beneficial effects as described above.

[0082] According to another aspect of the present invention, a range hood is provided, comprising a body and the above-mentioned fan, wherein the fan is arranged on the body.

[0083] The range hood of the present invention includes the fan as described above. Since the fan has the beneficial effects as described above, the range hood including the fan as described above will also have the beneficial effects as described above.

[0084] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely illustrative and are not intended to limit the scope of the present invention. Various changes and modifications may be made therein by those skilled in the art 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 claimed in the appended claims.

[0085] For ease of description, the term "connected" may be used herein 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 "connected" may include direct connection or indirect connection via other elements or features, and this document is intended to include all of these situations.

[0086] 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, they indicate the presence of features, steps, operations, parts, components and / or combinations thereof.

[0087] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0088] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, those skilled in the art will appreciate that the present invention is not limited to the above embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A volute assembly, characterized in that: include: A housing, wherein the housing encloses an air guide cavity, and a connecting portion extends from the housing toward the outside of the air guide cavity; a fixing member connected to the connecting portion; as well as A sound absorbing member is attached to at least a portion of the outer side wall of the shell through the fixing member.

2. The volute assembly according to claim 1, characterized in that The shell has a surrounding plate, a first side plate and a second side plate, the surrounding plate has a first side and a second side, the first side is opposite to the second side, the first side plate is connected to the first side, and the second side plate is connected to the second side, the connecting portion includes a first connecting portion and a second connecting portion, the first connecting portion extends from the first side in a direction away from the second side, and the second connecting portion extends from the second side in a direction away from the first side, and the two ends of the fixing member are respectively connected to the first connecting portion and the second connecting portion.

3. The volute assembly according to claim 2, characterized in that The fixing member includes a main body, a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion are respectively formed at both ends of the main body, a first connecting hole is provided on the first connecting portion, and a second connecting hole is provided on the second connecting portion, the first clamping portion is clamped with the first connecting hole, and the second clamping portion is clamped with the second connecting hole.

4. The volute assembly according to claim 3, characterized in that The first clamping portion includes a first section, a transition connecting section and a second section. The first section is bent from one end of the main body, and the second section is connected to the end of the first section away from the main body through the transition connecting section. The second section can switch between a first state and a second state relative to the first section; the first connecting hole includes a first hole portion and a second hole portion. The first hole portion and the second hole portion are relative to each other so that the cross-section of the first connecting hole is in a "convex" shape, and a contact surface is formed on the inner side wall of the second hole portion facing the first hole portion; the first section is inserted into the first hole portion, and the second section is inserted into the second hole portion. When the second section is in the first state, it contacts the contact surface, and when the second section is in the second state, it is separated from the contact surface.

5. The volute assembly according to claim 4, characterized in that A step portion is formed on the second section. When the second section is in the first state, the step portion contacts the bottom surface of the first connecting portion.

6. The volute assembly according to claim 4, characterized in that A trigger portion extends from one end of the second section away from the transition connecting section in a direction away from the first section. When the second section is in a first state, a projection of the trigger portion onto the connecting portion is at least partially located outside the second hole portion.

7. The volute assembly according to claim 3, characterized in that The second clamping portion has a third section and a fourth section. The third section is bent from one end of the main body, and the fourth section is bent from one end of the third section away from the main body.

8. The volute assembly according to claim 1, wherein: One end of the fixing member is rotatably connected to the connecting portion, and the other end of the fixing member is clamped with the connecting portion.

9. The volute assembly according to claim 8, characterized in that The fixing member includes a rotating shaft arranged on the connecting portion and a rotating portion sleeved on the rotating shaft, so that one end of the fixing member is pivotally connected to the connecting portion through the rotating portion and the rotating shaft.

10. The volute assembly according to claim 1, wherein: An air outlet communicating with the outside and the air guide cavity is provided on the shell, and the sound absorbing component is arranged close to the air outlet.

11. A fan, characterized in that: It comprises an impeller and a volute assembly according to any one of claims 1 to 10, wherein the impeller is arranged in the air guide cavity.

12. A range hood, characterized in that: The invention comprises a machine body and the fan according to claim 11, wherein the fan is arranged on the machine body.

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