Volute, fan and extractor hood

Abstract

The application discloses a volute, a fan and a range hood. The volute comprises a first shell and a second shell, the first shell is provided with a first cavity, the second shell is provided with a second cavity, and the first cavity and the second cavity are adapted to be communicated to form a containing cavity when the first shell and the second shell are assembled, and the containing cavity is adapted to contain a fan wheel. The containing cavity for containing the fan wheel can be enclosed through the assembly of the first shell and the second shell, and the structure is simple and the production efficiency is high.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and in particular to a volute, a fan, and a range hood. Background Technology

[0002] Range hoods are essential kitchen ventilation devices, and the fan is the core component of a range hood. A fan consists of an impeller, a volute, and a motor. The impeller is responsible for the operation of the gas, while the volute is responsible for gas collection and energy conversion. Currently, the ease of manufacturing volutes still needs improvement. Utility Model Content

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, this application proposes a volute.

[0004] To achieve the above objectives, this application discloses a volute, the volute comprising:

[0005] The first housing has a first recessed cavity, and the first housing has a rib extending circumferentially thereon;

[0006] The second housing has a second recess and a groove extending circumferentially thereon. The first and second recesses are adapted to communicate when the first and second housings are assembled to form a receiving cavity, the receiving cavity being adapted to accommodate a wind turbine. The rib is adapted to be inserted into the groove when the first and second housings are assembled.

[0007] A sealing element is disposed between the groove and the rib.

[0008] In some embodiments of this application, the first housing is further provided with a first opening communicating with the first cavity, and the second housing is further provided with a second opening communicating with the second cavity. The first opening and the second opening are adapted to communicate with each other when the first housing and the second housing are assembled to form an air outlet, and the air outlet communicates with the receiving cavity.

[0009] In some embodiments of this application, the first housing is provided with a first through hole located at the bottom of the first cavity and communicating with the first cavity;

[0010] And / or, the second housing is provided with a second through hole located at the bottom of the second cavity and communicating with the second cavity.

[0011] In some embodiments of this application, the rib is adapted to be inserted into the groove along a first direction, and the rib is tapered along the first direction;

[0012] And / or, the rib is adapted to be inserted into the groove from the opening of the groove, the opening of the groove being gradually widened in a direction away from the bottom of the groove.

[0013] In some embodiments of this application, the groove is open on one side of its opening to communicate with the second cavity.

[0014] In some embodiments of this application, when the second housing is further provided with a second opening communicating with the second cavity, the second housing is provided with a stop portion located in the extending direction of the groove on at least one side of the second opening.

[0015] In some embodiments of this application, the first housing has a first flange extending away from the first cavity, the first flange being provided with the rib, the second housing has a second flange extending away from the second cavity, the second flange being provided with the groove, and the first flange and the second flange are adapted to abut against each other and be connected and fixed.

[0016] In some embodiments of this application, the seal has a U-shaped cross-section to form a retaining cavity, which is adapted for insertion of the rib to clamp the rib.

[0017] In some embodiments of this application, the first housing is a one-piece molded part;

[0018] And / or, the second housing is a one-piece molded part.

[0019] A second aspect of this application discloses a fan comprising the aforementioned volute.

[0020] The third aspect of this application discloses a range hood, characterized in that the range hood includes the aforementioned fan.

[0021] The technical solution of this application can enclose a cavity for accommodating the wind turbine by assembling the first shell and the second shell. The structure is simple and the production efficiency is high.

[0022] Other advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 Schematic diagram of the volute in some embodiments;

[0025] Figure 2 Cross-sectional views of the volute in some embodiments;

[0026] Figure 3 Here are exploded views of the volute in some embodiments;

[0027] Figure 4 This is a schematic diagram of the first housing in some embodiments;

[0028] Figure 5 This is a schematic diagram of the second housing in some embodiments;

[0029] Figure 6 This is a cross-sectional view of the second housing in some embodiments;

[0030] Figure 7 This is a cross-sectional view of the seal in some embodiments.

[0031] Explanation of icon numbers:

[0032] First housing 100, first cavity 110, first opening 120, first through hole 130, rib 140, first flange 150, second housing 200, second cavity 210, second opening 220, second through hole 230, groove 240, slot 241, slot bottom 242, first side 243, second side 244, second flange 250, stop part 260, sealing element 300, holding cavity 310, receiving cavity 500, air outlet 600.

[0033] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0038] The first aspect of this application discloses a volute, which, in some embodiments, combines... Figures 1 to 3 As shown, the volute includes a first housing 100 and a second housing 200. The first housing 100 is provided with a first cavity 110, and the second housing 200 is provided with a second cavity 210. The first cavity 110 and the second cavity 210 are adapted to communicate with each other when the first housing 100 and the second housing 200 are assembled to form a receiving cavity 500, which is used to accommodate the wind turbine.

[0039] The impeller is located inside the volute. When the impeller rotates, gas is drawn into the volute and then discharged. The volute is the component for gas collection and energy conversion. In related technologies, the volute includes a front plate, a rear plate, and a surrounding plate. The surrounding plate is located between the front and rear plates. The front, rear, and surrounding plates together define the internal cavity for mounting the impeller. This design requires the front, rear, and surrounding plates to be manufactured separately. During assembling the volute, the front and surrounding plates are connected, and the rear and surrounding plates are also connected. The ease of manufacturing the volute needs to be improved.

[0040] In this embodiment, the volute includes a first housing 100 and a second housing 200. The first housing 100 has a first cavity 110, and the second housing 200 has a second cavity 210. The first housing 100 and the second housing 200 are assembled together, such that the first cavity 110 and the second cavity 210 are connected to form a receiving cavity 500, which is used to accommodate the wind turbine. There are various ways to assemble and connect the first housing 100 and the second housing 200, including but not limited to riveting, screwing, welding, and fusion, as long as the first housing 100 and the second housing 200 can be fixed together. Therefore, in this embodiment, only the first housing 100 and the second housing 200 need to be assembled together to form the receiving cavity 500 for accommodating the wind turbine. In contrast, related technologies require the assembly of a front plate, a rear plate, and a surrounding plate. This embodiment not only reduces the number of parts but also reduces the number of assembly connections, thus simplifying the structure of the volute and improving the ease of manufacturing.

[0041] As the impeller rotates, gas is drawn into the interior of the volute. Therefore, in this embodiment, in combination with... Figures 1 to 5 As shown, the first housing 100 is provided with a first through hole 130. The first through hole 130 is located at the bottom of the first recess 110 and communicates with the first recess 110. When the first housing 100 and the second housing 200 are assembled, the first through hole 130 communicates with the receiving cavity 500. When the impeller rotates, the gas passes through the first through hole 130 from the outside of the volute and is drawn into the inside of the volute (receiving cavity 500).

[0042] Of course, a perforated structure can also be provided on the second housing 200 to allow gas intake. For example, combined with Figures 1 to 5 As shown, in some embodiments, the second housing 200 is provided with a second through hole 230. The second through hole 230 is located at the bottom of the second cavity 210 and communicates with the second cavity 210. When the first housing 100 and the second housing 200 are assembled, the second through hole 230 communicates with the receiving cavity 500. When the impeller rotates, gas passes through the second through hole 230 from the outside of the volute and is drawn into the inside of the volute (receiving cavity 500).

[0043] The rotation of the wind turbine requires coordination with the motor. To facilitate motor installation, in some embodiments, a combination of... Figures 1 to 5As shown, the first housing 100 is provided with a first through hole 130, which is located at the bottom of the first cavity 110 and communicates with the first cavity 110. The second housing 200 is provided with a second through hole 230, which is located at the bottom of the second cavity 210 and communicates with the second cavity 210. One of the first through hole 130 and the second through hole 230 serves as an air inlet for allowing gas to be drawn into the interior of the volute. The other of the first through hole 130 and the second through hole 230 serves as a mounting port for mounting a motor therein (the mounting port can also allow airflow into the interior of the volute, and to some extent, it also serves as an air inlet).

[0044] For example, the first through hole 130 serves as an air inlet, the second through hole 230 serves as an installation port, the impeller and the motor are assembled together, the motor is installed in the installation port, and the impeller is located in the accommodating cavity 500. When the motor drives the impeller to rotate, the gas is drawn from the outside of the volute into the inside of the volute (accommodating cavity 500) through the first through hole 130.

[0045] After the gas is drawn into the volute, it needs to be discharged. Therefore, the volute needs to be equipped with an air outlet 600. To facilitate the formation of the air outlet 600, in some embodiments, it is combined with... Figures 1 to 5 As shown, the first housing 100 is further provided with a first opening 120 communicating with the first cavity 110, and the second housing 200 is further provided with a second opening 220 communicating with the second cavity 210. The first opening 120 and the second opening 220 are adapted to communicate with each other when the first housing 100 and the second housing 200 are assembled to form an air outlet 600, and the air outlet 600 is connected with the accommodating cavity 500.

[0046] In other words, the first opening 120 constitutes part of the air outlet 600, and the second opening 220 constitutes another part of the air outlet 600. Since the accommodating cavity 500 is enclosed by the first housing 100 and the second housing 200, the air outlet 600 is also enclosed by the first housing 100 and the second housing 200. There is no need to separately process the air outlet 600 on the first housing 100 or the second housing 200, which helps to simplify the structure.

[0047] In some embodiments, the first housing 100 and the second housing 200 are both integrally molded parts, meaning they are manufactured using a one-piece molding process. For example, the first housing 100 and the second housing 200 can be made of plastic, by injecting molten plastic into molds and molding the molten plastic to form the first housing 100 and the second housing 200. Alternatively, the first housing 100 can be made of metal and machined into a single structure using machining processes such as cutting, drilling, stretching, and stamping; the second housing 200 can also be machined into a single structure in the same way. This not only ensures that the housing is assembled from fewer parts but also ensures the overall structural strength of the housing.

[0048] In some embodiments, the axial dimension of the first housing 100 is not less than 0.3 times the axial dimension of the volute, and the axial dimension of the second housing 200 is not less than 0.3 times the axial dimension of the volute. The axial direction refers to the extension direction along the central axis of the volute, which can be equivalent to the rotation axis of the wind turbine. For example, the axial dimension of the first housing 100 is L1, the axial dimension of the second housing 200 is L2, and the axial dimension of the volute is L3, satisfying L1≥0.3*L3 and L2≥0.3*L3. For example, L1=0.5*L3 and L2=0.5*L3.

[0049] If the axial dimension of either the first housing 100 or the second housing 200 is too large, the corresponding first cavity 110 or second cavity 210 will be deeper, making it difficult to process and form. In this embodiment, by improving the axial dimensions of the first housing 100 and the second housing 200, the axial dimension of either the first housing 100 or the second housing 200 is prevented from becoming too large, thereby making it more advantageous to manufacture the first housing 100 and the second housing 200.

[0050] To facilitate the assembly between the first housing 100 and the second housing 200, in some embodiments, a combination is used... Figures 1 to 5 As shown, the first housing 100 is provided with a rib 140 extending circumferentially thereon, and the second housing 200 is provided with a groove 240 extending circumferentially thereon. When the first housing 100 and the second housing 200 are assembled, the rib 140 is inserted into the groove 240.

[0051] The rib 140 is located at the end of the first housing 100 near the second housing 200 and extends circumferentially along the first housing 100, thus surrounding the recess 110. The groove 240 is located at the end of the second housing 200 near the first housing 100 and extends circumferentially along the second housing 200, thus surrounding the second recess 210. When the first housing 100 and the second housing 200 are assembled, they move towards each other and gradually approach each other until the rib 140 is inserted into the groove 240. This achieves pre-positioning between the first housing 100 and the second housing 200, making it easier to align them and laying the foundation for further connection and fixation between them, which helps improve the production efficiency of the volute.

[0052] In some embodiments, combined with Figures 1 to 6As shown, the protruding rib 140 is adapted to be inserted into the groove 240 through the opening 241 of the groove 240. The opening 241 of the groove 240 is gradually widened in the direction away from the bottom 242 of the groove 240. When assembling the first housing 100 and the second housing 200, assuming the second housing 200 is fixed and the second cavity 210 is open upwards, and the first housing 100 is in the posture of the first cavity 110 being open downwards, the first housing 100 moves from top to bottom (i.e., in the first direction) and gradually approaches the second housing 200 until the protruding rib 140 is inserted into the groove 240 and pre-positioned. The opening 241 of the groove 240 is gradually widened in the direction away from the bottom 242 of the groove 240. This makes it easier for the protruding rib 140 to pass through the opening 241 of the groove 240 and be inserted into the groove 240, which is more conducive to the assembly between the first housing 100 and the second housing 200. In particular, if the seal 300 is assembled onto the rib 140 first, it is more conducive to the rib 140 and the seal 300 being inserted into the groove 240 simultaneously (see description below).

[0053] In some embodiments, combined with Figure 2 and Figure 6 As shown, the groove 240 is open on one side of its opening 241 to communicate with the second cavity 210.

[0054] The groove 240 has two opposite sides located at its opening 241, namely a first side 243 and a second side 244. The first side 243 is open so that the groove 240 and the second cavity 210 are connected, that is, the first side 243 is directly connected to the second cavity 210. The second side 244 is away from the second cavity 210 relative to the first side 243, forming the groove wall of the groove 240.

[0055] When the rib 140 is inserted into the groove 240 until it is fully inserted, it only needs to engage with the second side 244. Since the first side 243 is open, the rib 140 has ample space for position adjustment, making it easier for the rib 140 to be inserted into the groove 240, further improving the ease of manufacturing the volute. It is understandable that if the first side 243 of the groove 240 forms the groove wall of the groove 240, that is, it is not open and forms a solid structure, then when the rib 140 is inserted into the groove 240, the rib 140 needs to engage with the first side 243 and the second side 244. The space between the first side 243 and the second side 244 is limited, and in this case, the rib 140 may get stuck. In this embodiment, by opening the first side 243 and connecting it to the second cavity 210, it is easier for the rib 140 and the groove 240 to engage.

[0056] In some embodiments, combined with Figure 5As shown, the second housing 200 has a stop portion 260 on at least one side of the second opening 220, which is located in the extending direction of the groove 240. That is, the groove 240 does not penetrate to the end face where the second opening 220 is located. The protruding rib 140 inserted into the groove 240 can also be stopped by the stop portion 260, so that the first housing 100 and the second housing 200 constrain each other in more spatial dimensions, and the pre-positioning of the first housing 100 and the second housing 200 is more stable.

[0057] In some embodiments, combined with Figures 1 to 6 As shown, the first housing 100 has a first flange 150 extending from the rib 140 away from the first cavity 110, and the first flange 150 is provided with the rib 140. The second housing 200 has a second flange 250 extending from the groove 240 away from the second cavity 210, and the second flange 250 is provided with the groove 240. The first flange 150 and the second flange 250 are adapted to abut against each other and be connected and fixed.

[0058] When the first housing 100 and the second housing 200 are assembled together, the rib 140 is inserted into the groove 240, and the first flange 150 and the second flange 250 abut together. By setting the first flange 150 and the second flange 250, the contact area between the first housing 100 and the second housing 200 is increased, which helps to improve the connection stability of the first housing 100 and the second housing 200.

[0059] Based on the configuration of the first flange 150 and the second flange 250, the first housing 100 and the second housing 200 can be fixed together by connecting the first flange 150 and the second flange 250. For example, the first flange 150 and the second flange 250 can be connected and fixed by riveting, screwing, welding or fusion, thus achieving the connection and fixation between the first housing 100 and the second housing 200.

[0060] In some embodiments, combined with Figures 1 to 3 As shown, the volute also includes a seal 300, which is disposed between the groove 240 and the rib 140. The seal 300 is thus held between the rib 140 and the groove 240 to form a seal, preventing oil and water from seeping out from the interior of the volute between the first housing 100 and the second housing 200. Typically, the seal 300 is adapted for elastic deformation. When the rib 140 and the groove 240 hold the seal 300, the seal 300 deforms to a certain extent, thereby improving the sealing effect. For example, the seal 300 may be made of silicone or rubber.

[0061] In some embodiments, combined with Figures 1 to 3 as well as Figure 7As shown, the seal 300 has a U-shaped cross-section to form a retaining cavity 310. The retaining cavity 310 is suitable for inserting the rib 140 so that the seal 300 can hold the rib 140. The retention cavity 310 makes it easier to assemble the first housing 100, the second housing 200 and the seal 300.

[0062] When assembling the volute, the seal 300 can first be secured to the rib 140 through its retaining cavity 310. The retaining cavity 310 can be interference-fitted with the rib 140, thus fixing the seal 300 and the rib 140 together. Then, the first housing 100 and the second housing 200 are assembled. During the assembly of the first housing 100 and the second housing 200, the rib 140 drives the seal 300 to insert into the groove 240, thereby clamping the seal 300 with the groove 240, thus forming a seal, which helps to further improve the ease of manufacturing the volute.

[0063] Optionally, the rib 140 is adapted to be inserted into the groove 240 along the first direction, and the rib 140 is tapered along the first direction. When assembling the first housing 100 and the second housing 200, the rib 140 and the seal 300 are assembled together first. By tapering the rib 140 along the first direction, the end of the rib 140 forms a pointed tip (relatively speaking), making it easier to insert into the retaining cavity 310 and assemble them together. Then, the rib 140 and the retaining cavity 310 simultaneously pass through the slot 241 of the groove 240 and are inserted into the groove 240.

[0064] Understandably, when the rib 140 and the seal 300 are fixed together, both sides of the rib 140 are covered by the seal 300. If the groove 240 is a U-shaped groove (i.e., both sides of the groove 240 at its opening 241 form groove walls, i.e., the first side 243 and the second side 244 mentioned above both form groove walls), the seal 300 will be difficult to insert into the groove 240. This is because the seal 300 needs to cooperate with the opposite sides of the groove 240 at its opening 241, which will generate excessive friction. If the groove 240 is open on one side of its opening 241 (the first side 243) to communicate with the second cavity 210, the seal 300 only needs to cooperate with the other side of the groove 240 (the second side 244), avoiding excessive friction and providing more space for the seal 300 to adjust, which is more conducive to assembly.

[0065] The second aspect of this application discloses a fan. In some embodiments, the fan includes the aforementioned volute. The volute includes a first housing 100 and a second housing 200. The first housing 100 is provided with a first cavity 110, and the second housing 200 is provided with a second cavity 210. The first cavity 110 and the second cavity 210 are adapted to communicate when the first housing 100 and the second housing 200 are assembled to form a receiving cavity 500 for accommodating a wind turbine.

[0066] Specifically, the fan includes a motor, a rotor, and a volute. The rotor is located inside the volute, and the motor is connected to the rotor. The motor drives the rotor to rotate inside the volute, thereby drawing gas into the volute and then discharging it. In this embodiment, the assembly of the first housing 100 and the second housing 200 forms a cavity 500 for accommodating the rotor, resulting in a simple structure and high production efficiency. It is understood that the volute of the fan in this embodiment adopts the technical solution of the above embodiments, and therefore possesses at least the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0067] The third aspect of this application discloses a range hood. In some embodiments, the range hood includes the aforementioned fan. Other structures of the range hood besides the fan can be found in related technologies and will not be described in detail here. The fan of the range hood in this embodiment adopts the technical solution of the above embodiments, and therefore has at least the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0068] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A volute, characterized in that, The volute includes: The first housing (100) is provided with a first cavity (110), and the first housing (100) is provided with a rib (140) extending circumferentially thereon; The second housing (200) has a second cavity (210) and a groove (240) extending circumferentially therefrom. The first cavity (110) and the second cavity (210) are adapted to communicate when the first housing (100) and the second housing (200) are assembled to form a receiving cavity (500), the receiving cavity (500) being adapted to accommodate a wind turbine. The rib (140) is adapted to be inserted into the groove (240) when the first housing (100) and the second housing (200) are assembled. A sealing element (300) is disposed between the groove (240) and the rib (140).

2. The volute as described in claim 1, characterized in that, The first housing (100) is further provided with a first opening (120) communicating with the first cavity (110), and the second housing (200) is further provided with a second opening (220) communicating with the second cavity (210). The first opening (120) and the second opening (220) are adapted to communicate with each other when the first housing (100) and the second housing (200) are assembled to form an air outlet (600), and the air outlet (600) communicates with the receiving cavity (500).

3. The volute as described in claim 1, characterized in that, The first housing (100) is provided with a first through hole (130) located at the bottom of the first cavity (110) and communicating with the first cavity (110); And / or, the second housing (200) is provided with a second through hole (230) located at the bottom of the second cavity (210) and communicating with the second cavity (210).

4. The volute as described in claim 1, characterized in that, The rib (140) is adapted to be inserted into the groove (240) along the first direction, and the rib (140) is tapered along the first direction; And / or, the rib (140) is adapted to be inserted into the groove (240) from the opening (241) of the groove (240), the opening (241) of the groove (240) being gradually widened in a direction away from the bottom (242) of the groove (240).

5. The volute as described in claim 1, characterized in that, The groove (240) is open on one side of its opening (241) to communicate with the second cavity (210).

6. The volute as described in claim 1, characterized in that, When the second housing (200) is further provided with a second opening (220) communicating with the second cavity (210), the second housing (200) is provided with a stop (260) on at least one side of the second opening (220) in the extending direction of the groove (240).

7. The volute as described in claim 1, characterized in that, The first housing (100) has a first flange (150) extending away from the first cavity (110), the first flange (150) being provided with the rib (140), the second housing (200) has a second flange (250) extending away from the second cavity (210), the second flange (250) being provided with the groove (240), the first flange (150) and the second flange (250) being adapted to abut and be connected and fixed.

8. The volute as described in claim 1, characterized in that, The seal (300) has a U-shaped cross-section to form a retaining cavity (310), which is adapted for the insertion of the rib (140) so that the seal (300) clamps the rib (140).

9. The volute as described in claim 1, characterized in that, The first housing (100) is a one-piece molded part; And / or, the second housing (200) is a one-piece molded part.

10. A fan, characterized in that, Includes the volute as described in any one of claims 1 to 9.

11. A range hood, characterized in that, Includes the wind turbine as described in claim 10.

Images