Tabletop range hood

Abstract

The table top range hood comprises an air duct shell, a support, a draught fan and a protective cover, the air duct shell is provided with an air duct, the support is arranged on the air duct and connected with the air duct shell, the draught fan is arranged on the upstream of the support and connected with the support, and the protective cover is arranged on the downstream of the support and connected with the support. According to the technical scheme, the support is connected to the air duct shell so as to be fixed to the air duct shell, the draught fan and the protective cover are connected to the support so as to be fixed to the support, and therefore assembly of the air duct shell, the support, the draught fan and the protective cover is completed; two structures do not need to be correspondingly arranged on the air duct shell for supporting the fan and supporting the protective cover, so that the structural complexity of the air duct shell can be reduced, the manufacturing difficulty is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to a desktop range hood. Background Art

[0002] A tabletop range hood is a new type of range hood that is compact and easy to carry. It is placed on a table when in use and is mainly used in barbecue, hot pot and other scenarios. In current tabletop range hoods, multiple components are connected and installed on the shell, and the shell needs to be provided with a variety of connection structures, which increases the structural complexity of the shell and even affects the appearance design of the shell. Utility Model Content

[0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a desktop range hood.

[0004] To achieve the above object, the present application discloses a desktop range hood, which comprises:

[0005] An air duct shell is provided with an air duct;

[0006] A bracket, disposed in the air duct and connected to the air duct shell;

[0007] a fan, disposed upstream of the support and connected to the support; and

[0008] A protective cover is arranged downstream of the support and connected to the support.

[0009] In some embodiments of the present application, the bracket includes a first connecting part and a second connecting part, the fan includes a third connecting part and a fourth connecting part, the first connecting part and the third connecting part are positioned and matched, and the second connecting part and the fourth connecting part are fastened and connected.

[0010] In some embodiments of the present application, the first connecting portion includes a mounting hole, and the third connecting portion includes a positioning protrusion, and the positioning protrusion is inserted into the mounting hole.

[0011] In some embodiments of the present application, the shape formed by the outline of the mounting hole is non-circular;

[0012] Alternatively, a portion of the contour of the mounting hole is protruded away from the center of the mounting hole along the radial direction of the mounting hole.

[0013] In some embodiments of the present application, the second connecting portion includes a fastening hole, and the fourth connecting portion includes a connecting hole, and the fastening hole and the connecting hole are suitable for fasteners to pass through for connection.

[0014] In some embodiments of the present application, the fastening holes and the connecting holes are suitable for fasteners to pass through in sequence for connection.

[0015] In some embodiments of the present application, the protective cover and the bracket are detachably connected.

[0016] In some embodiments of the present application, one of the protective cover and the bracket is provided with a claw and the other is provided with a locking hole, and the claw is locked in the locking hole.

[0017] In some embodiments of the present application, the bracket includes a fifth connecting part, the air duct shell includes a sixth connecting part located on its inner wall, the sixth connecting part is provided with a concave cavity, and the fifth connecting part is inserted into the concave cavity to connect with the sixth connecting part.

[0018] In some embodiments of the present application, the desktop range hood further includes a buffer pad, and the buffer pad abuts between the fifth connecting portion and the sixth connecting portion.

[0019] In some embodiments of the present application, the protective cover includes a limiting portion, the limiting portion is protruded relative to the edge of the protective cover along the radial direction of the protective cover, and the limiting portion is inserted into the concave cavity.

[0020] In some embodiments of the present application, the fan includes a motor and a wind wheel drivingly connected to the motor, the wind wheel includes a hub, blades and a support ring, the blades are arranged between the hub and the support ring, the support ring is provided with a wind wheel inlet, the hub is recessed toward the support ring to form a accommodating cavity, and the motor is embedded in the accommodating cavity.

[0021] In some embodiments of the present application, the fan is arranged in the air duct, and the fan comprises a motor and a wind wheel drivingly connected to the motor;

[0022] The desktop range hood also includes a guide shell arranged in the air duct, the guide shell includes an air inlet end and an air outlet end, the guide shell is gradually tapered from the air inlet end to the air outlet end, the wind wheel is provided with a wind wheel inlet, the wind wheel inlet is inserted into the air outlet end or the air outlet end is inserted into the wind wheel inlet.

[0023] In the technical solution of the present application, the bracket is connected to the air duct shell and thus fixed to the air duct shell, and the fan and the protective cover are respectively connected to the bracket and thus fixed to the bracket, thereby completing the assembly of the air duct shell, the bracket, the fan and the protective cover. The fan and the protective cover share the bracket, and there is no need to set two structures on the air duct shell corresponding to the support of the fan and the support of the protective cover. In this way, the structural complexity of the air duct shell can be reduced, which is conducive to reducing the manufacturing difficulty and improving production efficiency.

[0024] Other advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 Schematic diagram of a desktop range hood in some embodiments;

[0027] Figure 2 Schematic diagram of a desktop range hood in some embodiments (viewing angle and Figure 1 different);

[0028] Figure 3 An exploded view of a desktop range hood in some embodiments;

[0029] Figure 4 Exploded diagram of desktop hood in some embodiments (explosion degree and Figure 3 different);

[0030] Figure 5 A cross-sectional view of a range hood body in some embodiments;

[0031] Figure 6 Schematic diagram of air duct housing in some embodiments;

[0032] Figure 7 A cross-sectional view of an air duct housing in some embodiments;

[0033] Figure 8 A schematic diagram of assembling a fan and a bracket in some embodiments;

[0034] Fig. 9 Schematic diagram of fan and bracket assembly in some embodiments (viewing angle and Figure 8 different);

[0035] Fig.10 for Figure 8 Exploded view of the structure shown;

[0036] Fig.11 A schematic diagram of a fan in some embodiments;

[0037] Fig.12 Schematic diagram of a fan in some embodiments (viewing angle and Fig.11 different);

[0038] Fig.13 An exploded view of a fan in some embodiments;

[0039] Fig.14 A schematic diagram of a bracket in some embodiments;

[0040] Fig.15 Schematic diagram of the bracket in some embodiments (viewing angle and Fig.14 different);

[0041] Fig.16 A schematic diagram of a protective cover in some embodiments;

[0042] Fig.17 Schematic diagram of protective cover in some embodiments (viewing angle and Fig.16 different);

[0043] Fig.18 It is a schematic diagram of the assembly of the fan and the guide shell in some embodiments;

[0044] Fig.19 for Fig.18 A cross-sectional view of the structure shown;

[0045] Fig. 20 for Fig.19 The enlarged view marked as A in FIG.

[0046] Fig.21 Schematic diagram of the guide shell in some embodiments.

[0047] Description of Figure Numbers:

[0048] Hood body 1000, air duct shell 1100, air duct 1110, air inlet 1111, air outlet 1112, sixth connection part 1120, cavity 1121, bracket 1200, first side 1201, second side 1202, flange 1203, first connection part 1210, mounting hole 1211, second connection part 1220, fastening hole 1221, card hole 1230, fifth connection part 1240, fan 1300, wind wheel 1310, wheel hub 1311, wind Blades 1312, support ring 1313, wind wheel inlet 1314, wind wheel outlet 1315, accommodating chamber 1316, motor 1320, third connecting part 1330, positioning protrusion 1331, fourth connecting part 1340, connecting hole 1341, protective cover 1400, first annular wall 1410, claw 1420, limiting part 1430, fastener 1500, buffer pad 1600, guide shell 1700, air inlet end 1710, air outlet end 1720, fuselage 2000.

[0049] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0054] The present application discloses a desktop range hood, Figures 1 to 7As shown, in some embodiments, the desktop range hood includes an air duct housing 1100, a bracket 1200, a fan 1300 and a protective cover 1400, wherein the air duct housing 1100 is provided with an air duct 1110, the bracket 1200 is arranged in the air duct 1110, and the bracket 1200 is connected to the air duct housing 1100 so as to be fixed to the air duct housing 1100, the fan 1300 is arranged upstream of the bracket 1200 and the fan 1300 is connected to the bracket 1200 so as to be fixed to the bracket 1200, and the protective cover 1400 is arranged on the bracket 1200. Downstream of the protective cover 1400, the protective cover 1400 is connected to the bracket 1200 and fixed to the bracket 1200, thereby completing the assembly between the air duct shell 1100, the bracket 1200, the fan 1300 and the protective cover 1400. Through such an arrangement, the fan 1300 and the protective cover 1400 share the bracket 1200, and there is no need to set two structures on the air duct shell 1100 corresponding to the support of the fan 1300 and the support of the protective cover 1400. In this way, the structural complexity of the air duct shell 1100 can be reduced, which is conducive to reducing the manufacturing difficulty and improving production efficiency.

[0055] Specifically, the desktop range hood includes a range hood body 1000 and a body 2000. The range hood body 1000 is installed on the body 2000. The desktop range hood is placed on the desktop through the body 2000, so that the range hood body 1000 is a certain distance away from the desktop. The assembly between the range hood body 1000 and the body 2000 can be referred to the relevant technology. It is not an improvement of the present application and will not be described in detail.

[0056] The range hood body 1000 includes an air duct housing 1100, a bracket 1200, a fan 1300 and a protective cover 1400. The air duct housing 1100 is provided with an air duct 1110, which can be integrally formed or formed by connecting at least two parts, one end of the air duct 1110 forms an air inlet 1111, and the other end of the air duct 1110 forms an air outlet 1112. The bracket 1200 is arranged in the air duct 1110, and needs to be connected to the air duct shell 1100 so as to be fixed in the air duct 1110. There are various ways to connect the bracket 1200 and the air duct shell 1100, such as welding, screwing, clamping, etc. It can be understood that the bracket 1200 is a component used to support other components. The bracket 1200 can be made of metal materials or other materials. The bracket 1200 can be a regular shape or an irregular shape. In the present embodiment, the bracket 1200 is a sheet metal part, and the so-called sheet metal part is processed by sheet metal technology.

[0057] The fan 1300 needs to be connected to the bracket 1200 so as to be fixed to the bracket 1200. At this time, the fan 1300 is located upstream of the bracket 1200. The upstream here refers to the upstream of the flow of oil smoke. The oil smoke first flows through the fan 1300 and then flows through the bracket 1200. For example, the fan 1300 is set in the air duct 1110 and connected to the bracket 1200. At this time, the fan 1300 is between the air inlet 1111 and the air outlet 1112. When the fan 1300 is working, the fan 1300 drives the oil smoke from the air inlet 1111 into the air duct 1110 and is discharged from the air outlet 1112. The oil smoke first flows through the fan 1300 and then flows through the bracket 1200.

[0058] The protective cover 1400 needs to be connected to the bracket 1200 so as to be fixed to the bracket 1200. At this time, the protective cover 1400 is located downstream of the bracket 1200. The downstream here refers to the downstream of the flow of oil smoke. The oil smoke first flows through the bracket 1200 and then flows through the protective cover 1400. For example, the protective cover 1400 is set at the air outlet 1112. The protective cover 1400 plays a protective role to prevent external users from touching the fan 1300 through the air outlet 1112. The protective cover 1400 can be in a grille shape, or a flow space can be formed between the protective cover 1400 and the edge of the air outlet 1112.

[0059] In the related art, the air duct shell 1100 needs to be provided with connecting structures for the bracket 1200 and the protective cover 1400 respectively, which will increase the structural complexity of the air duct shell 1100 and increase the manufacturing difficulty of the air duct shell 1100 (for example, the air duct shell 1100 is formed by integral injection molding, and providing connecting structures for the bracket 1200 and the protective cover 1400 respectively will increase the difficulty of mold design). In particular, when the fan 1300, the bracket 1200 and the protective cover 1400 are installed to the air duct shell 1100 along one direction, the connecting structures of the air duct shell 1100 for the bracket 1200 and the protective cover 1400 respectively will affect the installation of the bracket 1200 and the protective cover 1400. For example, the fan 1300, the bracket 1200 and the protective cover 1400 are installed from the air outlet 1112 to the air duct shell 1100. When installing the bracket 1200, the bracket 1200 needs to avoid the connection structure of the air duct shell 1100 set for the protective cover 1400, which will reduce the assembly efficiency.

[0060] In this embodiment, the fan 1300 and the protective cover 1400 share the bracket 1200, and the air duct shell 1100 is provided with a connection structure for the bracket 1200 without providing a connection structure for the protective cover 1400, thereby reducing the structural complexity of the air duct shell 1100, and the installation of the bracket 1200 is not easily interfered with. The fan 1300 is located upstream of the bracket 1200 and the protective cover 1400 is located downstream of the bracket 1200. The fan 1300 is connected to the bracket 1200 and the protective cover 1400 is connected to the bracket 1200 without interfering with each other, and it is easy to assemble. In particular, since the bracket 1200 is set in the air duct 1110, when the protective cover 1400 is connected to the bracket 1200, the protective cover 1400 blocks the connection structure between the protective cover 1400 and the bracket 1200, and it is not easy to be exposed. Through the improvement of the above scheme, the structural complexity of the desktop range hood is reduced in this way, which is conducive to reducing the manufacturing difficulty and improving the production efficiency.

[0061] Combination Figures 8 to 11 As shown, in some embodiments, the bracket 1200 includes a first connection part 1210 and a second connection part 1220, and the fan 1300 includes a third connection part 1330 and a fourth connection part 1340, wherein the third connection part 1330 is positioned and matched with the first connection part 1210, and the fourth connection part 1340 is fastened to the second connection part 1220.

[0062] Specifically, the fan 1300 rotates at a high speed during operation to exhaust oil smoke, so the precise installation of the fan 1300 has an important influence on its oil smoke extraction performance. For this reason, in the present embodiment, by setting the first connection part 1210 and the third connection part 1330, when assembling the fan 1300 and the bracket 1200, the fan 1300 and the bracket 1200 can be positioned by the cooperation of the third connection part 1330 and the first connection part 1210, that is, the pre-positioning between the fan 1300 and the bracket 1200 is achieved, and there is a preliminary constraint between the fan 1300 and the bracket 1200, so that the alignment between the fourth connection part 1340 and the second connection part 1220 can be achieved, and the further tightening between the fourth connection part 1340 and the second connection part 1220 is facilitated, thereby completing the fixing of the motor 1320 to the bracket 1200.

[0063] For example, in some embodiments, the first connection part 1210 includes a mounting hole 1211, which is approximately located in the middle position of the bracket 1200, and the third connection part 1330 includes a positioning protrusion 1331. The cooperation between the third connection part 1330 and the first connection part 1210 is that the positioning protrusion 1331 is inserted into the mounting hole 1211. Through the cooperation between the positioning protrusion 1331 and the mounting hole 1211, preliminary positioning constraint is achieved, and the structure is simple and easy to assemble.

[0064] Furthermore, combined with Fig.10 , Fig.14 and Fig.15 As shown, the shape formed by the outline of the mounting hole 1211 is non-circular. It is understandable that the fan 1300 will output rotational power during operation. In order to strengthen the constraint between the fan 1300 and the bracket 1200, the shape formed by the outline of the mounting hole 1211 is designed to be non-circular, and the outline of the positioning protrusion 1331 is adapted to the outline of the mounting hole 1211 (similar in shape), so that the positioning protrusion 1331 can be prevented from rotating relative to the mounting hole 1211 after being inserted into the mounting hole 1211. It is understandable that an object can form a circular outline when rotating. By designing the outline of the mounting hole 1211 to be non-circular, the positioning protrusion 1331 can be prevented from rotating in the mounting hole 1211. The non-circular shape can be a quadrilateral, pentagon, hexagon, heptagon or other shapes.

[0065] For example, part of the contour of the mounting hole 1211 is protruded away from the center of the mounting hole 1211 along the radial direction of the mounting hole 1211, and the limiting protrusion is adapted to the contour of the mounting hole 1211. When the limiting protrusion is inserted into the mounting hole 1211, it cannot rotate relative to the mounting hole 1211.

[0066] Combination Fig.10 and Fig.11 As shown, in some embodiments, the fourth connection portion 1340 includes a connection hole 1341, and the second connection portion 1220 includes a fastening hole 1221. The connection hole 1341 and the fastening hole 1221 are used for fasteners 1500 to pass through for connection, thereby achieving fastening between the fan 1300 and the bracket 1200. For example, the connection hole 1341 and the fastening hole 1221 are screw holes, respectively, and the fastener 1500 is a screw. The screw passes through the connection hole 1341 and the fastening hole 1221 and is screwed, thereby achieving fastening, which is convenient and quick. Of course, the fastener 1500 is not limited to a screw, and other methods can also be used.

[0067] Furthermore, in some embodiments, the fastening hole 1221 and the connecting hole 1341 are used for the fastener 1500 to be sequentially passed through. Specifically, the bracket 1200 has a first side 1201 and a second side 1202 opposite to each other, the fan 1300 is connected to the first side 1201 of the bracket 1200 and is located upstream of the bracket 1200, and the protective cover 1400 is connected to the second side 1202 of the bracket 1200 and is located downstream of the bracket 1200. The fastener 1500 can sequentially pass through the connecting hole 1341 and the fastening hole 1221 to achieve a fastened connection, or can sequentially pass through the fastening hole 1221 and the connecting hole 1341 from To achieve a fastening connection, for the former, the connecting hole 1341 needs to be protruded to a greater extent along the radial direction of the fan 1300 in order to cooperate with the fastening hole 1221 so that the fastener 1500 can pass through it, while for the latter, the connecting hole 1341 does not need to be protruded along the radial direction of the fan 1300 in order to cooperate with the fastening hole 1221 so that the fastener 1500 can pass through it. The fastener 1500 passes through the fastening hole 1221 and the connecting hole 1341 in turn without interference, thereby reducing the space occupied.

[0068] In some embodiments, the protective cover 1400 and the bracket 1200 are designed to be detachably connected, that is, when the protective cover 1400 is needed, the protective cover 1400 is connected and fixed to the bracket 1200, and when the protective cover 1400 is not needed, the protective cover 1400 can be removed. There are many ways of detachable connection, such as snap connection, screw connection or magnetic connection, etc. The detachable connection facilitates the disassembly and assembly between the protective cover 1400 and the bracket 1200. The detachable connection of the protective cover 1400 can also facilitate the cleaning of the internal parts to ensure the smoke extraction performance of the desktop range hood.

[0069] Combination Figures 14 to 17 As shown, in some embodiments, one of the protective cover 1400 and the bracket 1200 is provided with a claw 1420, and the other of the protective cover 1400 and the bracket 1200 is provided with a clamping hole 1230. The claw 1420 is clamped in the clamping hole 1230 to achieve a snap connection, which can realize the installation and fixation of the protective cover 1400, as well as the disassembly of the protective cover 1400.

[0070] The protective cover 1400 may be provided with a claw 1420, and the corresponding bracket 1200 may be provided with a hole 1230; or the protective cover 1400 may be provided with a hole 1230, and the corresponding bracket 1200 may be provided with a claw 1420; or the protective cover 1400 may be provided with both the claw 1420 and the hole 1230, and the corresponding bracket 1200 may be provided with the hole 1230 and the claw 1420, the claw 1420 of the protective cover 1400 and the hole 1230 of the bracket 1200 correspond to each other, and the hole 1230 of the protective cover 1400 and the claw 1420 of the bracket 1200 correspond to each other.

[0071] Taking the protective cover 1400 as an example in which the claw 1420 is provided and the corresponding bracket 1200 is provided with the latch hole 1230, when installing the protective cover 1400, the protective cover 1400 is basically moved along the axial direction of the air outlet 1112 toward the bracket 1200 (first install the bracket 1200 and the fan 1300 to the air duct shell 1100) until the claw 1420 is engaged with the latch hole 1230, so that the protective cover 1400 can be fixed.

[0072] Furthermore, combined with Fig.17 As shown, the inner side of the protective cover 1400 includes a first annular wall 1410 (the inner side is the side facing the bracket 1200), the first annular wall 1410 is protruded toward the bracket 1200, and the protective cover 1400 is connected to the bracket 1200 through the first annular wall 1410, that is, the first annular wall 1410 is provided with a clamping hole 1230 and / or a clamping claw 1420.

[0073] Specifically, the first annular wall 1410 is disposed on the inner side of the protective cover 1400. When the protective cover 1400 is installed, the protective cover 1400 is fixed by connecting the first annular wall 1410 to the bracket 1200. By providing the first annular wall 1410, the bracket 1200 can be kept away from the air outlet 1112 to a certain extent. In particular, when the fan 1300 is connected and fixed to the bracket 1200, the fan 1300 is not easily visible to the user, thereby minimizing the exposure of the fan 1300 to the user's field of vision.

[0074] It can be understood that by setting the first annular wall 1410 on the inner side of the protective cover 1400, the first annular wall 1410 can also strengthen the protective cover 1400, and the protective cover 1400 is not easy to deform. In particular, the first annular wall 1410 is designed to be arranged alternately with the edge of the protective cover 1400, so that the structural strength of the protective cover 1400 within the range of the first annular wall 1410 and the part outside the range can be strengthened.

[0075] When the protective cover 1400 is provided with a claw 1420, since the claw 1420 is protruding toward the bracket 1200, by providing the first annular wall 1410, the first annular wall 1410 can provide a reinforcing support for the claw 1420, and can effectively prevent the claw 1420 from breaking. It is particularly suitable for the case where the protective cover 1400 is integrally injection molded and the first annular wall 1410 and the claw 1420 are formed at the same time.

[0076] Combination Figure 4 , Figure 6 , Figure 7 , Fig.14 and Fig.15As shown, in some embodiments, the bracket 1200 includes a fifth connection part 1240, the air duct shell 1100 includes a sixth connection part 1120 located on its inner wall, and the sixth connection part 1120 is provided with a concave cavity 1121. The fifth connection part 1240 is inserted into the concave cavity 1121 when connected with the sixth connection part 1120. Through the setting of the concave cavity 1121, the installation of the bracket 1200 can be positioned.

[0077] Specifically, when installing the bracket 1200, align the fifth connection part 1240 on the bracket 1200 with the sixth connection part 1120 until the fifth connection part 1240 is inserted into the recessed cavity 1121 of the sixth connection part 1120, thereby positioning the bracket 1200. At this time, the relative position of the fifth connection part 1240 and the sixth connection part 1120 is not easy to change, thereby facilitating the connection and fixation between the sixth connection part 1120 and the fifth connection part 1240 through fasteners (not shown in the figure).

[0078] Combination Fig.14 and Fig.15 As shown, in some embodiments, the number of the fifth connection portions 1240 includes three, and the three fifth connection portions 1240 are spaced apart along the circumference of the bracket 1200 .

[0079] For example, the three fifth connection parts 1240 are respectively convex, and correspondingly, the air duct shell 1100 is provided with three sixth connection parts 1120, and the three fifth connection parts 1240 correspond one to one with the three sixth connection parts 1120, so that three supporting connection points are formed between the bracket 1200 and the air duct shell 1100, and the lines connecting the three supporting connection points in sequence form a triangle, which improves the supporting stability of the bracket 1200 and can effectively reduce the number of the fifth connection parts 1240 and the sixth connection parts 1120, thereby reducing the structural complexity.

[0080] In particular, the three fifth connecting parts 1240 are evenly spaced along the circumference of the bracket 1200. For example, the angle along the circumference between two adjacent fifth connecting parts 1240 is 120°. By distributing them evenly, the force on the bracket 1200 (the supporting force of the air duct shell 1100 on the bracket 1200) is more evenly distributed, thereby further improving the stability of the bracket 1200.

[0081] Combination Figure 4 As shown, in some embodiments, the desktop range hood further includes a buffer pad 1600 , and the buffer pad 1600 is abutted between the fifth connecting portion 1240 and the sixth connecting portion 1120 .

[0082] Since the vibration generated by the operation of the fan 1300 will be transmitted to the bracket 1200, if the fifth connecting part 1240 is in direct contact with the sixth connecting part 1120, the vibration will be transmitted through the contact between the fifth connecting part 1240 and the sixth connecting part 1120. In order to weaken the transmission of vibration, in this embodiment, a buffer pad 1600 is provided. The buffer pad 1600 has a certain flexibility and can achieve elastic deformation. For example, the buffer pad 1600 is a silicone pad or a rubber pad. The buffer pad 1600 is provided between the fifth connecting part 1240 and the sixth connecting part 1120. When the fifth connecting part 1240 and the sixth connecting part 1120 are connected and fixed, the fifth connecting part 1240 and the sixth connecting part 1120 jointly clamp the buffer pad 1600. When the vibration is transmitted from the fifth connecting part 1240 to the sixth connecting part 1120, the buffer pad 1600 can absorb the energy of the vibration, thereby weakening the transmission of the vibration to the sixth connecting part 1120. Through such a setting, the overall vibration of the desktop range hood is weakened.

[0083] In some embodiments, the fifth connection part 1240, the buffer pad 1600 and the sixth connection part 1120 are used for the fastener 1500 (not shown in the figure) to pass through for fastening, that is, the connection between the fifth connection part 1240 and the sixth connection part 1120 is achieved by the fastener. When connecting the fifth connection part 1240 and the sixth connection part 1120, the fastener needs to pass through the fifth connection part 1240 and the sixth connection part 1120, and at the same time needs to pass through the buffer pad 1600. Through such a setting, the connection among the fifth connection part 1240, the buffer pad 1600 and the sixth connection part 1120 is achieved.

[0084] Since the buffer pad 1600 is disposed between the fifth connection portion 1240 and the sixth connection portion 1120, it is clamped by the connection between the fifth connection portion 1240 and the sixth connection portion 1120. Since the vibration is transmitted to the buffer pad 1600, the buffer pad 1600 can be constrained by the fastener passing through the buffer pad 1600. Even in the case of vibration, the buffer pad 1600 is not easy to be displaced and separated from the fifth connection portion 1240 and the sixth connection portion 1120. For example, the fastener is a screw, the buffer pad 1600 is provided with a through hole, the fifth connection portion 1240 and the sixth connection portion 1120 are respectively provided with screw holes, and the screw passes through the screw hole of the fifth connection portion 1240, the through hole of the buffer pad 1600 and the screw hole of the sixth connection portion 1120 in sequence and is screwed, thereby fastening the fifth connection portion 1240, the buffer pad 1600 and the sixth connection portion 1120.

[0085] Under the premise of providing the buffer pad 1600, the buffer pad 1600 can be first inserted into the concave cavity 1121 to realize the positioning of the buffer pad 1600. For example, the buffer pad 1600 and the cavity wall of the concave cavity 1121 can be interference fit together, and the buffer pad 1600 is not easy to change its position. Then, the bracket 1200 is installed, and the fifth connecting part 1240 on the bracket 1200 is aligned with the sixth connecting part 1120 until the fifth connecting part 1240 is inserted into the concave cavity 1121 of the sixth connecting part 1120, so as to position the bracket 1200. At this time, the relative positions of the fifth connecting part 1240, the buffer pad 1600 and the sixth connecting part 1120 are not easy to change.

[0086] Combination Figure 3 , Figure 4 , Figure 6 and Fig.16 As shown, in some embodiments, the protective cover 1400 includes a limiting portion 1430, and the limiting portion 1430 is protruded relative to the edge of the protective cover 1400 along the radial direction of the protective cover 1400 (when the protective cover 1400 is installed to the air outlet 1112, the radial direction of the protective cover 1400 is equivalent to the radial direction of the air outlet 1112), and when the protective cover 1400 is installed in place, the limiting portion 1430 is inserted into the concave cavity 1121.

[0087] Taking the example that the protective cover 1400 is provided with a claw 1420 and the bracket 1200 is provided with a hole 1230, when the protective cover 1400 is installed on the bracket 1200, since the claw 1420 is located on the inner side of the protective cover 1400, it is difficult to observe the coordination between the claw 1420 and the hole 1230 during the installation process of the protective cover 1400, which will reduce the assembly efficiency of the protective cover 1400.

[0088] To this end, in the present embodiment, the protective cover 1400 is provided with a limiting portion 1430, and the limiting portion 1430 is protruded relative to the edge of the protective cover 1400 along the radial direction of the protective cover 1400. In this way, during the installation of the protective cover 1400, the limiting portion 1430 can be observed at all times, so as to control the limiting portion 1430 to be inserted into the concave cavity 1121. The limiting portion 1430 cooperates with the concave cavity 1121 to achieve positioning, so that the claw 1420 and the hole 1230 can be cooperated (not limited to the cooperation between the claw 1420 and the hole 1230, and can also be applied to other connection methods), which is convenient and quick, and improves the assembly efficiency. For example, the fan 1300 is connected to the bracket 1200 to form a module, and the module is installed in the air duct shell 1100. At this time, the fifth connecting part 1240 of the bracket 1200 is inserted into the cavity 1121 and connected to the sixth connecting part 1120. Finally, the protective cover 1400 is installed on the bracket 1200, and the limiting part 1430 is aligned with the cavity 1121 and inserted.

[0089] Combination Fig.14 and Fig.15 As shown, in some embodiments, the edge of the bracket 1200 is formed with a flange 1203, and the setting of the flange 1203 greatly improves the structural strength of the bracket 1200. It can be understood that the fan 1300 rotates at a high speed during operation. By improving the structural strength of the bracket 1200, the installation stability of the fan 1300 is greatly improved, so that the fan 1300 is not easy to shake during operation. At the same time, the fan 1300 will vibrate during operation, and the vibration generated by the fan 1300 will be transmitted to the bracket 1200, and then to the air duct shell 1100 and the fuselage 2000. Since the structural strength of the bracket 1200 is greatly improved, it is beneficial for the bracket 1200 to stay away from the resonant frequency range and reduce the amplitude of the vibration, so that the bracket 1200 is not easy to resonate with the fan 1300. Through such a setting, the bracket 1200 can effectively support the fan 1300 and weaken the generation of abnormal noise.

[0090] Continue to combine Fig.14 and Fig.15 As shown, in some embodiments, the flanges 1203 are bent toward the same side of the bracket 1200, that is, the edge of the bracket 1200 has a certain length, and the flanges 1203 formed along the extension direction of the edge of the bracket 1200 are all bent toward the same side of the bracket 1200, thereby reducing the manufacturing difficulty of the bracket 1200. For example, the bracket 1200 is divided into two halves, and the flanges 1203 of one half and the flanges 1203 of the other half are bent in opposite directions, so that the bracket 1200 needs to be processed in two different directions, while the flanges 1203 in this embodiment are toward the same side of the bracket 1200, and the bracket 1200 only needs to be processed in one direction, and the construction process is simpler.

[0091] In some embodiments, the material of the bracket 1200 is metal, such as an iron-carbon alloy, and the metal has a certain ductility, which facilitates the processing of the flange 1203 while ensuring that the bracket 1200 has a high structural strength. For example, the bracket 1200 is a sheet metal part, that is, the bracket 1200 is processed by a sheet metal process, and the sheet metal process is mature, which is conducive to reducing the manufacturing difficulty of the bracket 1200.

[0092] Combination Fig.11 , Fig.12 and Fig.13As shown, in some embodiments, the fan 1300 includes a motor 1320 and a wind wheel 1310, the motor 1320 and the wind wheel 1310 are drivingly connected, and the motor 1320 is installed on the bracket 1200. The wind wheel 1310 includes a support ring 1313, a fan blade 1312 and a hub 1311, the fan blade 1312 is arranged between the support ring 1313 and the hub 1311, the support ring 1313 is provided with a fan inlet 1314, the hub 1311 is recessed with a receiving cavity 1316 toward the support ring 1313, the number of the fan blades 1312 is multiple, the multiple fan blades 1312 surround the receiving cavity 1316, and a fan outlet is arranged between adjacent fan blades 1312. The motor 1320 is embedded in the accommodating cavity 1316 and is connected to the hub 1311, thereby driving the hub 1311, and then driving the fan 1300 to rotate. The oil smoke enters the space surrounded by multiple fan blades 1312 from the wind wheel inlet 1314 and is discharged from the wind wheel outlet 1315, thereby realizing the extraction of oil smoke. Through the cooperation of the accommodating cavity 1316 and the motor 1320, the space occupied along the axial direction can be reduced, and the structure is more compact.

[0093] Combination Figure 5 , Figures 18 to 21 As shown, in some embodiments, the desktop range hood includes a guide shell 1700, which is disposed in the air duct 1110. The guide shell 1700 is used to guide the oil smoke to the wind wheel inlet 1314, so that the oil smoke flows to the wind wheel inlet 1314 more smoothly, ensuring that the fan 1300 can suck the oil smoke and reduce noise.

[0094] It can be understood that the fan 1300 is arranged in the air duct 1110, and there is a certain space between the wind wheel inlet 1314 and the wall of the air duct 1110. In order to prevent the oil smoke from leaking from this space and causing loss and noise, in the present embodiment, a guide shell 1700 is arranged, and the guide shell 1700 has an air inlet end 1710 and an air outlet end 1720. From the air inlet end 1710 to the air outlet end 1720, the guide shell 1700 is designed to be tapered, so that the air inlet end 1710 can match with the wall of the air duct 1110 as much as possible, and the air outlet end 1720 is matched and plugged with the wind wheel inlet 1314 (the air outlet end 1720 is inserted into the wind wheel inlet 1314 or the wind wheel inlet 1314 is inserted into the air outlet end 1720). In this way, the oil smoke is guided to the wind wheel inlet 1314 through the guide shell 1700, thereby ensuring the oil smoke suction effect of the fan 1300.

[0095] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made based on the concept of the present application and the contents of the present application description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A desktop range hood, characterized in that: The desktop range hood comprises: An air duct housing (1100) is provided with an air duct (1110); A bracket (1200) is disposed in the air duct (1110) and connected to the air duct housing (1100); a fan (1300), disposed upstream of the support (1200) and connected to the support (1200); and The protective cover (1400) is arranged downstream of the support (1200) and connected to the support (1200).

2. The desktop range hood according to claim 1, characterized in that: The bracket (1200) includes a first connecting portion (1210) and a second connecting portion (1220), and the fan (1300) includes a third connecting portion (1330) and a fourth connecting portion (1340), the first connecting portion (1210) and the third connecting portion (1330) are positioned and matched, and the second connecting portion (1220) and the fourth connecting portion (1340) are fastened and connected.

3. The desktop range hood according to claim 2, characterized in that: The first connection portion (1210) includes a mounting hole (1211), and the third connection portion (1330) includes a positioning protrusion (1331), and the positioning protrusion (1331) is inserted into the mounting hole (1211).

4. The desktop range hood according to claim 3, characterized in that: The shape formed by the outline of the mounting hole (1211) is non-circular; Alternatively, a portion of the contour of the mounting hole (1211) is protruded away from the center of the mounting hole (1211) along the radial direction of the mounting hole (1211).

5. The desktop range hood according to claim 2, characterized in that: The second connection portion (1220) includes a fastening hole (1221), and the fourth connection portion (1340) includes a connecting hole (1341). The fastening hole (1221) and the connecting hole (1341) are suitable for allowing a fastener (1500) to pass through for connection.

6. The desktop range hood according to claim 5, characterized in that: The fastening hole (1221) and the connecting hole (1341) are suitable for allowing the fastener (1500) to pass through in sequence for connection.

7. The desktop range hood according to claim 1, characterized in that: The protective cover (1400) and the bracket (1200) are detachably connected.

8. The desktop range hood according to claim 1, characterized in that: One of the protective cover (1400) and the bracket (1200) is provided with a clamping claw (1420) and the other is provided with a clamping hole (1230), and the clamping claw (1420) is clamped in the clamping hole (1230).

9. The desktop range hood according to claim 1, characterized in that: The bracket (1200) includes a fifth connecting portion (1240), and the air duct shell (1100) includes a sixth connecting portion (1120) located on the inner wall thereof, the sixth connecting portion (1120) is provided with a concave cavity (1121), and the fifth connecting portion (1240) is inserted into the concave cavity (1121) to be connected to the sixth connecting portion (1120).

10. The tabletop range hood according to claim 9, characterized in that: The desktop range hood further comprises a buffer pad (1600), wherein the buffer pad (1600) is abutted between the fifth connecting portion (1240) and the sixth connecting portion (1120).

11. The tabletop range hood according to claim 9, characterized in that: The protective cover (1400) comprises a limiting portion (1430), wherein the limiting portion (1430) is protruded relative to the edge of the protective cover (1400) along the radial direction of the protective cover (1400), and the limiting portion (1430) is inserted into the concave cavity (1121).

12. The tabletop range hood according to claim 1, characterized in that: The fan (1300) comprises a motor (1320) and a wind wheel (1310) drivingly connected to the motor (1320); the wind wheel (1310) comprises a hub (1311), a fan blade (1312) and a support ring (1313); the fan blade (1312) is arranged between the hub (1311) and the support ring (1313); the support ring (1313) is provided with a wind wheel inlet (1314); the hub (1311) is recessed toward the support ring (1313) to form a receiving cavity (1316); the motor (1320) is embedded in the receiving cavity (1316).

13. The tabletop range hood according to claim 1, characterized in that: The fan (1300) is disposed in the air duct (1110), and the fan (1300) comprises a motor (1320) and a wind wheel (1310) drivingly connected to the motor (1320); The desktop range hood also includes a guide shell (1700) arranged in the air duct (1110), the guide shell (1700) includes an air inlet end (1710) and an air outlet end (1720), and the guide shell (1700) is gradually tapered from the air inlet end (1710) to the air outlet end (1720), and the wind wheel (1310) is provided with a wind wheel inlet (1314), and the wind wheel inlet (1314) is inserted into the air outlet end (1720) or the air outlet end (1720) is inserted into the wind wheel inlet (1314).

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