CN211119570U

CN211119570U - Fume exhaust fan

Info

Publication number: CN211119570U
Application number: CN201921759193.3U
Authority: CN
Inventors: 王磊; 申志贤
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-07-28
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a range hood, which comprises a fan frame (2) and a fan system arranged in the fan frame (2), wherein the fan system comprises a motor (3) and a motor bracket (4) used for installing the motor (3), the motor bracket (4) comprises at least two support legs (41) extending towards the rear side direction of the fan frame (2), the range hood further comprises an elastic part (1), the elastic part (1) is arranged between the motor bracket (4) and the fan frame (2), the elastic part (1) comprises a first installation part (11) and a second installation part (12), the first installation part (11) and the second installation part (12) are staggered with each other in the axial direction of the motor (3), so that the first installation part (11) can only contact with and be connected and fixed with the end part of each support leg (41) of the motor bracket (4) far away from the motor (3), the second mounting part (12) can only be in contact with the fan frame (2) and is fixedly connected with the fan frame. Compared with the prior art, the utility model has the advantages of: the normal vibration of the fan frame caused by the axial vibration of the motor can be cut off, and the vibration noise is reduced.

Description

Fume exhaust fan

Technical Field

The utility model relates to an oil smoke purifier, especially a range hood.

Background

The range hood has become one of indispensable kitchen household electrical appliances in modern families, and the range hood generally comprises a top suction type range hood and a side suction type range hood, and the top suction type range hood has more and more extensive application due to the advantages of neatness, lightness, small occupied space and the like. The top-suction type range hood generally includes a fume collecting hood, a fan housing located on the fume collecting hood, and a volute, an impeller, and a motor for driving the impeller are installed in the fan housing.

Chinese utility model like application number 201520944166.9 discloses a new-type range hood, including the cigarette machine casing, locate the spiral case in the cigarette machine casing, embedded impeller and the drive impeller pivoted motor in the spiral case, the motor passes through fixed establishment direct mount on the cigarette machine casing.

Because the motor is directly fixed on the shell of the range hood through the fixing mechanism, the axial vibration of the motor can be directly transmitted to the shell to generate serious shell normal vibration.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide one kind can range hood, can separate fan frame normal direction vibration to reduce vibration noise.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a range hood, includes the fan frame, sets up the fan system in the fan frame, the fan system includes the motor and is used for installing the motor support of motor, the motor support includes two at least stabilizer blades that extend towards fan frame rear side direction, its characterized in that: the range hood still includes the elastic component, the elastic component sets up between motor support and fan frame, the elastic component includes first installation department and second installation department, first installation department and second installation department are misplaced each other in the axial of motor for the tip contact and the connection of motor are only kept away from with each stabilizer blade of motor support to first installation department are fixed, the second installation department only can contact and connect fixedly with the fan frame.

Preferably, the elastic member is annular and undulates in a circumferential direction, and the first mounting portion is located at a wave crest and the second mounting portion is located at a wave trough.

In order to increase rigidity, the outer periphery of the connection part of each second mounting part and the fan frame can be formed with profiling for increasing rigidity of the corresponding position.

Preferably, the profiling is formed by the outer part of the fan frame sinking towards the inner part of the fan frame on the rear side of the fan frame.

In order to realize the absorption of vibration energy, quickly attenuate the amplitude and prevent the vibration from being transmitted to other areas of the fan frame to generate vibration noise, the inner side of the joint of each second mounting part and the rear side of the fan frame can be provided with a damping sheet.

Compared with the prior art, the utility model has the advantages of: the elastic piece is arranged between the motor bracket and the fan frame, so that the normal vibration of the fan frame caused by the axial vibration of the motor can be isolated, and the vibration noise is reduced; the profiling is arranged on the periphery of the outer side of the joint of each second mounting part and the fan frame, so that the rigidity of the rear side of the fan frame is increased; the damping fins are arranged in the weak area on the inner side of the joint of each second mounting part and the rear side of the fan frame, so that the absorption of vibration energy is realized, the amplitude is rapidly attenuated, and vibration is prevented from being transmitted to other areas of the fan frame to generate vibration noise.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention;

fig. 2 is a sectional view of an oil suction press according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of the range hood according to the embodiment of the present invention after hiding the volute and the impeller;

fig. 4 is a schematic view of the elastic member of the range hood according to the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1 and 2, a range hood, which is a ceiling range hood, includes a fan frame 2 and a fan system disposed in the fan frame 2.

The fan system further comprises a volute 6, an impeller 7 arranged in the volute 6 and a motor 3 used for driving the impeller 7 to rotate, the volute 6 is fixedly connected with the top of the fan frame 2, the motor support 4 is mounted with the fan frame 2, the motor 3 and the motor support 4 are not in contact with the volute 6, and vibration of the motor 3 during rotation cannot be directly transmitted to the volute 6, so that operation noise of the range hood is reduced.

Referring to fig. 2 and 3, the motor bracket 4 includes a body 42 disposed around the periphery of the motor 3, and at least two legs 41 disposed on the body 42 and extending toward the rear side of the wind turbine frame 2, where the number of the legs 41 in the present embodiment is four, and each of the four legs is disposed in the circumferential direction of the body 42. The periphery of the motor 3 is provided with an annular skirt 31, the body 42 is connected with the skirt 31, and the elastic shock absorption pads 8 are further arranged at the connection positions, so that the transmission of the rotation vibration of the motor 3 on the motor bracket 4 is reduced, and the number and the arrangement positions of the elastic shock absorption pads 8 correspond to those of the bracket 41. Although the elastic shock absorption pad 8 can realize shock insulation in multiple directions, due to the gravity action of the motor 3 and the impeller 7, the soft elastic shock absorption pad 8 cannot ensure the coaxiality of the impeller 7 and the volute 6, so that the shock insulation effect can be limited to a certain degree, and the normal vibration caused by the axial vibration of the motor 3 is particularly serious in the fan frame 2 with a thin plate structure.

Referring to fig. 2 to 4, in order to isolate vibration with respect to normal vibration of the wind turbine frame 2, an elastic member 1 is disposed between the motor bracket 4 and the wind turbine frame 2, the elastic member 1 is annular, and the elastic member 1 includes a first mounting portion 11 and a second mounting portion 12 which are arranged at intervals in a circumferential direction. The first mounting portion 11 and the second mounting portion 12 are offset from each other in the axial direction of the motor 3, so that the first mounting portion 11 can only be in contact with, connected to and fixed to the end portion of each leg 41 of the motor bracket 4 away from the motor 3, and the second mounting portion 12 can only be in contact with, connected to and fixed to the wind turbine frame 2. The elastic component 1 does not directly contact with the fan frame 2 at the joint of the motor support 4, and the elastic component 1 does not directly contact with the motor support 4 at the joint of the fan frame 2, so that the direct contact between the motor support 4 and the fan frame 2 is avoided, and the vibration transmission between the motor support 4 and the fan frame 2 is isolated. The fastening member may be made to pass through the first mounting portion 11 and the leg 41 to connect the motor bracket 4 with the elastic member 1, and the fastening member may pass through the second mounting portion 12 and the wind frame 2 to connect the wind frame 2 with the elastic member 1. In the present embodiment, the elastic member 1 undulates in a wave shape in the circumferential direction, the undulation is along the axial direction of the motor 3, the first mounting portion 11 is located at a peak, and the second mounting portion 12 is located at a valley, where the peak is the position closest to the motor 3, and the valley is the position farthest from the motor 3, and the peak and the valley are interchangeable. The first mounting portion 11 has four corresponding to the number of the legs 41, and the second mounting portion 12 also has four, and the first mounting portion 11 and the second mounting portion 12 are circumferentially spaced apart.

Referring to fig. 2 and 3, the outer peripheral portion of the junction of each second mounting portion 12 and the fan frame 2 is formed with a profiling 21 for increasing rigidity, the profiling 21 being recessed from the outside of the fan frame 2 to the inside of the fan frame 2 on the rear side of the fan frame 2. Alternatively, a reinforcement may be welded to the outer peripheral portion to increase rigidity thereof. Since the rigidity of the inner side of the joint between each second mounting portion 12 and the rear side of the fan frame 2 is weak, vibrations (basically, low-frequency vibrations) that are not completely blocked easily cause vibrations of the sheet metal of the fan frame 2 in this region, and by providing the damping fin 5 in this region, absorption of vibration energy is achieved, so that the amplitude is rapidly attenuated, and the vibrations are prevented from being transmitted to other regions of the fan frame 2 to generate vibration noise.

Claims

1. The utility model provides a range hood, includes fan frame (2), sets up the fan system in fan frame (2), the fan system includes motor (3) and is used for installing motor (3) motor support (4), motor support (4) are including two at least stabilizer blades (41) towards fan frame (2) rear side direction extension, its characterized in that: range hood still includes elastic component (1), elastic component (1) sets up between motor support (4) and fan frame (2), elastic component (1) includes first installation department (11) and second installation department (12), first installation department (11) and second installation department (12) are misplaced each other in the axial of motor (3) for first installation department (11) only can keep away from the tip contact of motor (3) and connect fixedly with each stabilizer blade (41) of motor support (4), second installation department (12) only can contact and connect fixedly with fan frame (2).

2. The range hood of claim 1, wherein: the elastic piece (1) is annular and undulates in a wave shape in the circumferential direction, the first mounting portion (11) is located at a wave crest, and the second mounting portion (12) is located at a wave trough.

3. The range hood of claim 1 or 2, wherein: the outer periphery of the joint of each second mounting part (12) and the fan frame (2) is provided with a profiling (21) for increasing the rigidity of the corresponding position.

4. The range hood of claim 3, wherein: the profiling (21) is formed by the fact that the outer portion of the fan frame (2) is sunken towards the inner portion of the fan frame (2) on the rear side of the fan frame (2).

5. The range hood of claim 3, wherein: and damping fins (5) are arranged on the inner sides of the joints of the second mounting parts (12) and the rear side of the fan frame (2).