Air duct assembly and range hood

Abstract

The utility model relates to the technical field of kitchen appliances, in particular to an air duct assembly and a range hood. The air duct assembly comprises an air duct main body, an impeller, a motor bracket, a motor reloading bracket and a driving motor; the impeller is rotatably arranged in the air duct main body; the motor support is connected to an air duct rear plate of the air duct body, and the motor reloading support is detachably connected to the motor support or detachably connected to the air duct rear plate. The driving motor is connected with the motor support or the motor reloading support, and the number of motor feet of the driving motor connected to the motor support is not consistent with the number of motor feet connected to the motor reloading support. The driving motor is in transmission connection with the impeller and used for driving the impeller to rotate relative to the air duct body. The air duct assembly can adapt to the driving motors with different motor foot numbers, so that the universality of the air duct can be improved, the use condition limitation of the air duct and the motors can be reduced, and the use cost of the air duct and the motors can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, and in particular to an air duct component and a range hood. Background Art

[0002] A range hood is an appliance installed on top of a stove, with an impeller driven by a motor to rotate, sucking away the oil smoke generated during the cooking process. The motor in the range hood is fixedly mounted on the air duct bracket, and the impeller's blade frame is tightly connected to the motor shaft, so that the motor drives the impeller to work, thereby sucking in and exhausting the gas produced by the combustion of the stove. During this process, the rotation of the impeller is the main source of noise in the range hood.

[0003] Currently, motors can be divided into three-claw motors and four-claw motors based on the different ways they are fixed to the air duct bracket. A three-claw motor has three evenly distributed motor feet, while a four-claw motor has four evenly distributed motor feet. The motor feet are fixedly connected to the air duct bracket. Compared with three-claw motors, four-claw motors offer more stable installation, more reliable connection, and lower noise. However, due to the different number of motor feet, three-claw motors and four-claw motors cannot be universally installed on the same air duct. Therefore, since the air duct cannot be universally compatible with three-claw motors and four-claw motors, the air duct needs to be redesigned based on the change in the installed motor, which reduces the versatility of the air duct product and increases the cost of using the air duct. Utility Model Content

[0004] The purpose of the present utility model includes providing an air duct assembly and a range hood, which can adapt to motors with different numbers of motor legs, thereby improving the versatility of the air duct, thereby reducing the restrictions on the use conditions of the air duct and the motor and reducing their use costs.

[0005] The embodiment of the present utility model can be implemented as follows:

[0006] In a first aspect, the utility model provides an air duct assembly, which includes an air duct body, an impeller, a motor bracket, a motor replacement bracket, and a drive motor;

[0007] The impeller is rotatably arranged in the air duct body; the motor bracket is connected to the air duct rear plate of the air duct body, and the motor replacement bracket is detachably connected to the motor bracket or detachably connected to the air duct rear plate;

[0008] The drive motor is connected to the motor bracket or the motor replacement bracket, and the number of motor pins of the drive motor connected to the motor bracket is inconsistent with the number of motor pins connected to the motor replacement bracket;

[0009] The drive motor is connected to the impeller in a transmission manner and is used to drive the impeller to rotate relative to the air duct body.

[0010] In an optional embodiment, the drive motor is configured with three first motor feet, and the three first motor feet are all connected to the motor replacement bracket; or, the drive motor is configured with four second motor feet, and the four second motor feet are all connected to the motor bracket.

[0011] In an optional embodiment, the motor replacement bracket includes an inner ring layer and an outer ring layer connected to the outer edge of the inner ring layer; the inner ring layer is configured with three motor foot mounting portions, the three motor foot mounting portions are spaced apart around the rotation axis of the impeller, and are connected one-to-one with the three first motor feet; the outer ring layer is connected to the motor bracket.

[0012] In an optional embodiment, each motor foot mounting portion is configured with two first motor mounting holes; each first motor foot is respectively matched with a first motor mounting hole through two first connecting members to be connected to the corresponding motor foot mounting portion.

[0013] In an optional embodiment, a motor gasket is provided at the connection between each first connecting member and the corresponding first motor mounting hole.

[0014] In an optional embodiment, the outer ring layer is configured with four connecting holes, and the four connecting holes are spaced apart around the rotation axis of the impeller, and each connecting hole corresponds to and cooperates with a second connecting member connected to the motor bracket.

[0015] In an optional embodiment, a shock-absorbing member is provided at the fitting position between each second connecting member and the connecting hole.

[0016] In an optional embodiment, the shock-absorbing component includes a copper sleeve and a replacement gasket, and the copper sleeve is fitted in the axial hole of the replacement gasket; the second connecting component is matched with the copper sleeve.

[0017] In an optional embodiment, the motor bracket includes four connecting frames, which are welded to the air duct rear plate at intervals around the rotation axis of the impeller, and the four connecting frames are connected to the four second motor feet in a one-to-one correspondence.

[0018] In an optional embodiment, each connecting frame is provided with a second motor mounting hole and two clearance slots for avoiding the first connecting member; each second motor foot is engaged with a second motor mounting hole via a third connecting member to be connected to the corresponding connecting frame;

[0019] Wherein, around the rotation axis direction of the impeller, the angle between the second motor mounting hole and the adjacent connecting hole is 45°.

[0020] In a second aspect, the present invention provides a range hood, which includes a range hood body and the above-mentioned air duct assembly; the air duct assembly is connected to the range hood body.

[0021] The beneficial effects of the air duct assembly and range hood provided by the embodiment of the utility model include:

[0022] The duct assembly includes a duct body, an impeller, a motor bracket, a motor replacement bracket, and a drive motor; the impeller is rotatably disposed within the duct body; the motor bracket is connected to the duct rear plate of the duct body, and the motor replacement bracket is detachably connected to the motor bracket or the duct rear plate; the drive motor is connected to the motor bracket or the motor replacement bracket, and the number of motor legs of the drive motor connected to the motor bracket is different from the number of motor legs connected to the motor replacement bracket, wherein the drive motor is transmission-connected to the impeller and is used to drive the impeller to rotate relative to the duct body. That is, the duct assembly can adapt to drive motors with different numbers of motor legs, thereby improving the versatility of the duct, thereby reducing the restrictions on the use conditions of the duct and the motor, and reducing its use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of the air duct assembly in the first perspective of the embodiment of the present utility model;

[0025] Figure 2 This is a structural diagram of the air duct assembly in the embodiment of the present utility model from a second viewing angle;

[0026] Figure 3 This is a structural diagram of the air duct main body, motor bracket and motor replacement bracket in an embodiment of the present utility model;

[0027] Figure 4 This is a structural diagram of the air duct body, impeller, motor replacement bracket and drive motor in an embodiment of the present utility model;

[0028] Figure 5 This is a structural diagram of the air duct main body, motor bracket, motor replacement bracket, second connecting member and shock absorbing member in an embodiment of the present utility model;

[0029] Figure 6 This is a structural diagram of the air duct main body, motor bracket, motor replacement bracket, drive motor, second connecting member and shock absorbing member in an embodiment of the present utility model;

[0030] Figure 7 This is a structural diagram of the motor replacement bracket in an embodiment of the present utility model;

[0031] Figure 8 for Figure 5 A partial schematic diagram of the middle part;

[0032] Figure 9 for Figure 6 Partial schematic diagram at point B in the middle;

[0033] Figure 10 for Figure 2 Partial schematic diagram at point C in the middle.

[0034] Icons: 100- duct assembly; 110- duct body; 120- impeller; 130- motor bracket; 140- motor replacement bracket; 150- drive motor; 111- duct back plate; 141- inner ring layer; 142- outer ring layer; 143- motor foot mounting part; 144- first motor mounting hole; 160- first connecting piece; 170- motor gasket; 145- connecting hole; 180- second connecting piece; 190- shock absorber; 191- copper sleeve; 192- replacement gasket; 193- shaft hole; 131- connecting frame; 132- second motor mounting hole; 133- clearance groove. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0039] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0040] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0041] Please refer to Figure 1-Figure 7 This embodiment provides a range hood, which includes a range hood body and an air duct assembly 100; the air duct assembly 100 is connected to the range hood body; and the air duct assembly 100 includes an air duct body 110, an impeller 120, a motor bracket 130, a motor replacement bracket 140 and a drive motor 150;

[0042] The impeller 120 is rotatably disposed in the air duct body 110; the motor bracket 130 is connected to the air duct rear plate 111 of the air duct body 110; the motor replacement bracket 140 is detachably connected to the motor bracket 130 or detachably connected to the air duct rear plate 111;

[0043] The driving motor 150 is connected to the motor bracket 130 or the motor replacement bracket 140, and the number of motor pins of the driving motor 150 connected to the motor bracket 130 is inconsistent with the number of motor pins connected to the motor replacement bracket 140;

[0044] In the present embodiment, the driving motor 150 is configured with three first motor feet, and the three first motor feet are all connected to the motor replacement bracket 140; or, the driving motor 150 is configured with four second motor feet, and the four second motor feet are all connected to the motor bracket 130; that is, the motor replacement bracket 140 is adapted to the installation of a three-claw motor, and the motor bracket 130 is adapted to the installation of a four-claw motor. In other embodiments of the present invention, according to the change in the number of motor feet of the driving motor 150, the adaptation effect can be achieved by adjusting the motor bracket 130 or the motor replacement bracket 140.

[0045] The driving motor 150 is in transmission connection with the impeller 120 and is used to drive the impeller 120 to rotate relative to the air duct body 110 .

[0046] Please refer to Figure 1-Figure 7 When the range hood is in use, the working principle of the air duct assembly 100 is as follows:

[0047] By connecting the driving motor 150 to the air duct body 110 and in transmission connection with the impeller 120, the driving motor 150 can drive the impeller 120 to rotate, thereby sucking the oil smoke through the air duct of the air duct body 110;

[0048] During the installation of the drive motor 150, since different drive motors 150 have different numbers of motor legs, when the number of motor legs of the drive motor 150 changes, in order to enable the drive motors 150 with different numbers of motor legs to be assembled on the air duct main body 110, the structural arrangement of the motor bracket 130 and the motor replacement bracket 140 is adopted to adapt to the drive motors 150 with different numbers of motor legs. It should be noted that in this embodiment, in order to facilitate the description of the three-claw drive motor 150 with three motor legs and the four-claw drive motor 150 with four motor legs, the motor leg of the drive motor 150 with three motor legs is named the first motor leg, and the motor leg of the drive motor 150 with four motor legs is named the second motor leg.

[0049] Therefore, based on the above content, for a drive motor 150 configured with three first motor legs, the three first motor legs can be connected to the motor replacement bracket 140 to achieve the installation of a three-claw drive motor 150; and for a drive motor 150 configured with four second motor legs, the four second motor legs can be connected to the motor bracket 130 to achieve the installation of a four-claw drive motor 150;

[0050] Furthermore, in this way, the universal installation of three-claw or four-claw drive motors 150 can be achieved, that is, the universality of drive motors 150 with different numbers of motor legs can be improved; it should be noted that the above content refers to the fact that the air duct assembly 100 can adapt to the universal installation of three-claw or four-claw drive motors 150, and its purpose is to illustrate that through the setting of the above-mentioned structure, it can adapt to the installation of drive motors 150 with different numbers of motor legs, thereby improving its universality and facilitating subsequent maintenance.

[0051] Based on the above content, the range hood can be installed with a drive motor 150 configured with three motor feet or a drive motor 150 configured with four motor feet, and can thus adapt to drive motors 150 with different numbers of motor feet, thereby improving the versatility of the air duct, thereby reducing the restrictions on the use conditions of the air duct and the motor and reducing its use cost.

[0052] Specifically, since the range hood can universally install a three-claw drive motor 150 and a four-claw drive motor 150, the conversion of the four-claw drive motor 150 installed in the range hood to the three-claw drive motor 150 is taken as an example for explanation. The above-mentioned motor bracket 130 and motor replacement bracket 140 can be used to enable the range hood to meet the installation requirements of the three-claw motor, and then to adapt to the installation of the three-claw drive motor 150 and the four-claw drive motor 150, thereby avoiding the need to replace the air duct assembly 100 as a whole when the structure of the motor changes. It can be directly replaced on the basis of the original air duct assembly 100, thereby improving the versatility of the air duct assembly 100 and reducing its use cost.

[0053] Further, please refer to Figures 1-9 In this embodiment, when configuring the motor replacement bracket 140, this embodiment adopts a method of connecting the motor replacement bracket 140 to the motor bracket 130. Based on this, the motor replacement bracket 140 includes an inner ring layer 141 and an outer ring layer 142 connected to the outer edge of the inner ring layer 141; the inner ring layer 141 is configured with three motor foot mounting portions 143, and the three motor foot mounting portions 143 are spaced apart around the rotation axis of the impeller 120 and are connected to the three first motor feet in a one-to-one correspondence; the outer ring layer 142 is connected to the motor bracket 130. Through this configuration, the structure of the motor replacement bracket 140 can be simplified by the configuration of the inner ring layer 141 and the outer ring layer 142, so that the structural portion of the motor replacement bracket 140 for connecting to the motor bracket 130 is located at the outer edge, while the structural portion connected to the drive motor 150 is relatively located at its inner edge. In this way, the difficulty of its installation is reduced and its assembly efficiency is improved. In other embodiments of the present invention, the motor replacement bracket 140 can be connected to the air duct rear plate 111. The structural setting method of the motor replacement bracket 140 can adopt the above-mentioned structure. When connecting, the outer ring layer 142 can be connected to the air duct rear plate 111.

[0054] When connecting the drive motor 150 to the motor replacement bracket 140, the first motor foot on the drive motor 150 and the motor foot mounting portion 143 on the motor replacement bracket 140 are connected by a first connecting member 160. Specifically, each motor foot mounting portion 143 is provided with two first motor mounting holes 144; each first motor foot is respectively engaged with one of the first motor mounting holes 144 through two first connecting members 160 to connect with the corresponding motor foot mounting portion 143. Thus, based on the above-mentioned drive motor 150 having three first motor feet, when connecting the drive motor 150 to the motor replacement bracket 140, the six first connecting members 160 can be engaged with the first motor feet and the first motor mounting holes 144 to complete the installation of the drive motor 150, thereby improving the installation stability of the drive motor 150. Moreover, since every two first connecting members 160 form a group to connect the first motor foot to the corresponding motor foot mounting portion 143, the installation stability of each first motor foot can be improved.

[0055] In addition, a motor gasket 170 is provided at the connection between each first connecting member 160 and the corresponding first motor mounting hole 144. This arrangement is intended to reduce the operating noise between the first motor foot and the corresponding connection during operation, thereby achieving the effect of vibration reduction and noise reduction.

[0056] When connecting the motor mounting bracket 140 to the motor bracket 130, the outer ring 142 is configured with four connection holes 145. These four connection holes 145 are spaced apart around the rotation axis of the impeller 120, and each connection hole 145 mates with a corresponding second connector 180 connected to the motor bracket 130. This arrangement improves the stability of the connection between the motor mounting bracket 140 and the motor bracket 130. Furthermore, to further reduce vibration and noise at the connection between the motor mounting bracket 140 and the motor bracket 130, a shock absorber 190 is provided at the interface between each second connector 180 and the connection hole 145, in addition to the above structure.

[0057] Specifically, the shock absorber 190 includes a copper sleeve 191 and a replacement gasket 192. The copper sleeve 191 is assembled in the shaft hole 193 of the replacement gasket 192; the second connecting member 180 cooperates with the copper sleeve 191. This arrangement can reduce strong metal connections, thereby reducing vibration and noise.

[0058] Based on the arrangement of the above-mentioned motor gasket 170 and shock absorber 190, it is possible to avoid noise generated by the motor driving the impeller 120 to rotate and the motor vibrating when the impeller 120 rotates during the operation of the range hood. Therefore, through the above-mentioned structural arrangement, two noise reduction structures can be formed, thereby reducing the noise generated by the range hood during operation.

[0059] Further, please refer to Figures 1-10 In this embodiment, when configuring the motor bracket 130, the motor bracket 130 includes four connecting frames 131, the four connecting frames 131 are welded to the air duct rear plate 111 around the rotation axis of the impeller 120, and the four connecting frames 131 are connected to the four second motor feet one by one.

[0060] On the basis of the structure of the four connecting frames 131, when connecting the connecting frame 131 with the corresponding second motor foot, this embodiment adopts a method of configuring a third connecting member to connect the second motor foot and the connecting frame 131. Based on this, in order to facilitate the installation of the third connecting member, each connecting frame 131 is provided with a second motor mounting hole 132, and each second motor foot is matched with a second motor mounting hole 132 through the third connecting member to be connected to the corresponding connecting frame 131; and on this basis, each connecting frame 131 is also provided with two makeshift grooves 133 for avoiding the first connecting member 160; the structural setting of the makeshift groove 133 is used to avoid the first connecting member 160 to avoid interference between the setting of the connecting frame 131 and the first connecting member 160, thereby ensuring the normal installation of the four-claw drive motor 150 and the three-claw drive motor 150.

[0061] It can be seen from the above content that when configuring the above-mentioned motor replacement bracket 140, a second connecting member 180 is configured to connect the outer ring layer 142 of the motor replacement bracket 140 to the motor bracket 130, and a third connecting member connected to the drive motor 150 is configured on the connecting frame 131. In order to avoid interference between the second connecting member 180 and the third connecting member during the installation process, the angle between the second motor mounting hole 132 and the adjacent connecting hole 145 around the rotation axis of the impeller 120 is 45°. In this way, during the installation process, the second motor mounting hole 132 has a gap with the connecting hole 145, so that interference can be avoided when installing the corresponding structure, thereby reducing the difficulty of installation.

[0062] In summary, please refer to Figures 1-10The range hood adopts the above-mentioned air duct assembly 100 to adapt to the three-claw drive motor 150 and the four-claw drive motor 150, so it has high compatibility, and thus can avoid adjusting the structure of the air duct main body 110 when the structure of the drive motor 150 changes, thereby reducing its use cost. In addition, in the above-mentioned structure, multi-level shock absorption can be achieved through the setting of the motor gasket 170 and the shock absorber 190, thereby reducing the vibration noise during operation; in addition, in the aforementioned structure, when configuring the first connecting member 160, the second connecting member 180 and the third connecting member, the arrangement is arranged in the axial direction of the impeller 120 or by configuring the give way groove 133, so as to avoid interference during the installation process, thereby reducing the difficulty of installation.

[0063] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. An air duct assembly, characterized in that: The air duct assembly includes an air duct body, an impeller, a motor bracket, a motor replacement bracket and a drive motor; The impeller is rotatably disposed in the air duct body; the motor bracket is connected to the air duct rear plate of the air duct body; the motor replacement bracket is detachably connected to the motor bracket or detachably connected to the air duct rear plate; The driving motor is connected to the motor bracket or the motor replacement bracket, and the number of motor pins of the driving motor connected to the motor bracket is inconsistent with the number of motor pins connected to the motor replacement bracket; Wherein, the driving motor is transmission-connected to the impeller and is used to drive the impeller to rotate relative to the air duct body.

2. The air duct assembly according to claim 1, characterized in that: The driving motor is configured with three first motor feet, and the three first motor feet are all connected to the motor replacement bracket; or, the driving motor is configured with four second motor feet, and the four second motor feet are all connected to the motor bracket.

3. The air duct assembly according to claim 2, characterized in that: The motor replacement bracket includes an inner ring layer and an outer ring layer connected to the outer edge of the inner ring layer; the inner ring layer is configured with three motor foot mounting parts, and the three motor foot mounting parts are arranged at intervals around the rotation axis of the impeller and are connected to the three first motor feet one by one; the outer ring layer is connected to the motor bracket.

4. The air duct assembly according to claim 3, characterized in that: Each of the motor foot mounting portions is configured with two first motor mounting holes; each of the first motor feet is matched with one of the first motor mounting holes through two first connecting members to be connected to the corresponding motor foot mounting portion.

5. The air duct assembly according to claim 4, characterized in that: A motor gasket is provided at the connection between each first connecting member and the corresponding first motor mounting hole.

6. The air duct assembly according to claim 3, characterized in that: The outer ring layer is provided with four connecting holes, which are spaced apart around the rotation axis of the impeller, and each of the connecting holes is matched with a second connecting member connected to the motor bracket.

7. The air duct assembly according to claim 6, characterized in that: A shock absorbing member is provided at the matching position between each second connecting member and the connecting hole.

8. The air duct assembly according to claim 7, characterized in that: The shock-absorbing component includes a copper sleeve and a replacement gasket, and the copper sleeve is fitted in the axial hole of the replacement gasket; the second connecting component is matched with the copper sleeve.

9. The air duct assembly according to any one of claims 2 to 8, characterized in that: The motor bracket includes four connecting frames, which are welded to the air duct rear plate at intervals around the rotation axis of the impeller, and the four connecting frames are connected to the four second motor feet in a one-to-one correspondence.

10. The air duct assembly according to claim 9, characterized in that: Each of the connecting frames is provided with a second motor mounting hole and two clearance slots for avoiding the first connecting member; each of the second motor legs is engaged with a second motor mounting hole via a third connecting member to be connected to the corresponding connecting frame; Wherein, around the rotation axis direction of the impeller, the angle between the second motor mounting hole and the adjacent connecting hole is 45°.

11. A range hood, characterized in that: The range hood comprises a range hood body and an air duct assembly as described in any one of claims 1 to 10; the air duct assembly is connected to the range hood body.

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