Fan system of range hood and range hood

Abstract

The utility model provides a fan system of a range hood and the range hood. The fan system of the range hood comprises a volute, a motor, a motor mounting bracket, a vibration isolation piece and a fastening piece, an air inlet is formed in a rear cover plate of the volute; the motor mounting bracket is arranged at the air inlet and is connected with the rear cover plate; the motor installation support comprises a through hole and a first installation hole, the motor penetrates through the through hole, the vibration isolation piece penetrates through the first installation hole and abuts against the two end faces, in the thickness direction, of the motor installation support, a second installation hole is formed in a shell of the motor, and the fastener is connected with the second installation hole and the vibration isolation piece. The first mounting hole is a long hole, the length of the first mounting hole in the circumferential direction of the through hole is larger than the length of the vibration isolation piece in the circumferential direction of the through hole, and the vibration isolation piece can move in the circumferential direction of the through hole relative to the first mounting hole. When vibration of the motor is large, the vibration isolation piece can move in the first mounting hole, structural deformation of the vibration isolation piece is prevented, the vibration isolation effect of the vibration isolation piece is guaranteed, vibration transmission is reduced, and noise is lowered.

Description

Technical Field

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

[0002] The range hood is one of the commonly used household appliances in the kitchen. The power component of the range hood mainly refers to the fan system. The fan system includes a volute and a motor. The motor is fixed to the rear cover of the volute through a motor mounting bracket. Specifically, corresponding mounting holes are provided on the motor housing and the motor mounting bracket, and the connection between the two is achieved through fasteners. Since the motor will vibrate when working, in order to reduce noise, rubber is usually arranged between the motor and the motor mounting bracket to reduce the vibration of the motor mounting bracket, thereby reducing the vibration of the volute. The existing rubber is generally fixed on the mounting hole of the motor mounting bracket, and the fastener is passed through the rubber to achieve connection with the motor mounting bracket.

[0003] However, the mounting hole on the existing motor mounting bracket is a single circular hole design, and the rubber cannot move relative to the mounting hole on the motor mounting bracket. When the motor vibrates greatly, the rubber structure will be deformed, reducing the vibration isolation effect of the rubber and increasing the noise. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects in the above-mentioned prior art and to provide a fan system of a range hood and a range hood.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A fan system for a range hood, the fan system for the range hood comprising a volute, a motor, a motor mounting bracket, a vibration isolator and a fastener;

[0007] The volute includes a rear cover plate, the rear cover plate is provided with an air inlet, and the motor mounting bracket is arranged at the air inlet and connected to the rear cover plate;

[0008] The motor mounting bracket comprises a through hole and a first mounting hole, the motor passes through the through hole, the vibration isolator passes through the first mounting hole and abuts against both end surfaces in the thickness direction of the motor mounting bracket, a second mounting hole is provided on the housing of the motor, and a fastener connects the second mounting hole and the vibration isolator;

[0009] The first mounting hole is an elongated hole, the length of the first mounting hole in the circumferential direction of the through hole is greater than the length of the vibration isolator in the circumferential direction of the through hole, and the vibration isolator can move in the circumferential direction of the through hole relative to the first mounting hole.

[0010] In this solution, the vibration isolator is clamped on both sides of the motor mounting bracket, and the abutment method allows the vibration isolator to move relative to the motor mounting bracket. When the vibration of the motor is large, the vibration isolator can move in the first mounting hole to prevent the structural deformation of the vibration isolator, ensure the vibration isolation effect of the vibration isolator, reduce the transmission of vibration, reduce noise, and the movable vibration isolator will not generate a reverse force on the motor to cause disorder in the motor order vibration.

[0011] Preferably, the vibration isolation member includes a first abutment portion, a second abutment portion and a connecting portion, the first abutment portion and the second abutment portion are installed at two axial ends of the connecting portion, the connecting portion passes through the first mounting hole, and end surfaces of the first abutment portion and the second abutment portion facing each other are respectively abutted against two end surfaces in the thickness direction of the motor mounting bracket.

[0012] In this solution, a specific structure of a vibration isolator is provided, and the vibration isolator is mounted on the motor mounting bracket through the cooperation of the first abutting portion and the second abutting portion.

[0013] Preferably, the first mounting hole is gourd-shaped, and the first mounting hole includes a partially overlapping first mounting hole unit and a second mounting hole unit, the diameter of the first mounting hole unit is larger than the diameter of the second mounting hole unit, and the diameter of the connecting part is larger than the length of the boundary line between the first mounting hole unit and the second mounting hole unit.

[0014] In this solution, the above arrangement can limit the vibration isolator from moving when the vibration of the motor is relatively small, thereby avoiding the situation where the vibration isolator has no space to move when the vibration of the motor is relatively large.

[0015] Preferably, there are multiple first mounting holes, and the multiple first mounting holes are arranged at intervals along the circumference of the through hole;

[0016] The number of the second mounting holes, vibration isolators and fasteners is the same as that of the first mounting holes, and they are all arranged in a one-to-one correspondence with the first mounting holes.

[0017] In this solution, the above arrangement improves the connection strength between the motor and the motor mounting bracket, and improves the reliability of the connection.

[0018] Preferably, the motor mounting bracket includes a fixing portion, a supporting portion and a mounting portion, the fixing portion and the mounting portion extend along the diameter direction of the through hole, one end of the fixing portion is connected to the rear cover plate, the other end of the fixing portion is connected to the supporting portion, the other end of the supporting portion extends along the axial direction of the through hole in a direction away from the rear cover plate and is connected to the mounting portion, and the through hole and the first mounting hole are arranged on the mounting portion.

[0019] In this solution, the motor mounting bracket adopts a stepped structure, which increases the strength of the motor mounting bracket as a whole (especially the middle part of the motor mounting bracket), greatly reduces the risk of modal coupling and modal density, and improves the adaptability of the entire fan system.

[0020] Preferably, a first angle is formed at the connection between the fixing portion and the supporting portion, and the angle of the first angle is 115°-125°;

[0021] And / or, a second angle is formed at a connection between the support portion and the mounting portion, and the angle of the second angle is 115°-125°.

[0022] In this solution, the above-mentioned arrangement can improve the strength of the motor mounting bracket, effectively increase the weight of the motor and its torsional and bending deformation during operation.

[0023] Preferably, the fixing portion includes a plurality of fixing units, the plurality of fixing units are arranged at intervals, one end of the plurality of fixing units is connected to the rear cover plate, and the other end of the plurality of fixing units is connected to the supporting portion.

[0024] In the present solution, the above arrangement can increase the connection area between the fixing portion and the rear cover plate of the volute without affecting the air intake, thereby improving the connection strength.

[0025] Preferably, the motor mounting bracket further comprises a reinforcing portion, which is an annular structure and is arranged around the outer circumference of the through hole and fixed on the mounting portion.

[0026] In this solution, the reinforcement can enhance the rigidity at the through hole, so that the area around the through hole is not easily deformed after the motor is installed.

[0027] Preferably, the fan system of the range hood also includes at least two volute mounting brackets, which are fixed to the rear cover plate. The volute mounting brackets are provided with a third mounting hole, and a line connecting the centers of the third mounting holes of the two volute mounting brackets passes through the central axis of the through hole.

[0028] In the present solution, the above arrangement facilitates modal decoupling of the motor mounting bracket and the rear cover of the volute, and is less likely to cause resonance of the rear cover of the volute.

[0029] A range hood comprises the above range hood fan system.

[0030] The positive and progressive effect of the utility model is that the vibration isolator is clamped on both sides of the motor mounting bracket, and the abutment mode allows the vibration isolator to move relative to the motor mounting bracket. When the vibration of the motor is large, the vibration isolator can move in the first mounting hole to prevent the structural deformation of the vibration isolator, ensure the vibration isolation effect of the vibration isolator, reduce the transmission of vibration, reduce noise, and the movable vibration isolator will not generate a reverse force on the motor to cause disorder of the motor order vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the fan system of the range hood according to one embodiment of the utility model.

[0032] Figure 2 Another three-dimensional structural schematic diagram of the fan system of the range hood according to an embodiment of the utility model.

[0033] Figure 3 It is a side structural schematic diagram of a fan system of a range hood according to an embodiment of the utility model.

[0034] Figure 4 The figure is a side structural schematic diagram of a motor mounting bracket according to an embodiment of the utility model.

[0035] Figure 5 The present invention is a schematic diagram of the structure of the motor mounting bracket and the vibration isolation member in accordance with an embodiment of the present invention.

[0036] Figure 6 Another structural schematic diagram of the cooperation between the motor mounting bracket and the vibration isolation member according to one embodiment of the utility model.

[0037] Figure 7 The figure is a three-dimensional structural schematic diagram of a vibration isolation member according to an embodiment of the present utility model.

[0038] Figure 8 The figure is a schematic diagram of the internal structure of the motor mounting bracket and the vibration isolation member according to one embodiment of the utility model.

[0039] Fig. 9 This is another side structural schematic diagram of the motor mounting bracket according to one embodiment of the utility model.

[0040] Description of reference numerals:

[0041] Snail 1

[0042] Front cover 11

[0043] Rear cover 12

[0044] Air Inlet 121

[0045] Ring wall 13

[0046] Volute mounting bracket 2

[0047] The third mounting hole 21

[0048] Motor mounting bracket 3

[0049] Through hole 31

[0050] First mounting hole 32

[0051] First mounting hole unit 321

[0052] Second mounting hole unit 322

[0053] Fixing portion 33

[0054] Fixed unit 331

[0055] Supporting portion 34

[0056] Mounting section 35

[0057] Reinforcement 36

[0058] Vibration isolation parts 4

[0059] The first contact portion 41

[0060] The second contact portion 42

[0061] Connecting part 43 DETAILED DESCRIPTION

[0062] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0063] like Figure 1-Figure 3 As shown, this embodiment discloses a range hood, including a fan system, the fan system includes a volute 1, a volute mounting bracket 2, a motor (not shown in the figure), a motor mounting bracket 3, a vibration isolation member 4 and a fastener (not shown in the figure).

[0064] like Figure 1-Figure 3 As shown, the volute 1 includes a front cover plate 11, a rear cover plate 12 and an annular wall 13, the front cover plate 11 and the rear cover plate 12 are arranged at intervals, and the annular wall 13 is connected between the front cover plate 11 and the rear cover plate 12. An air inlet 121 is provided on the rear cover plate 12, and the air inlet 121 passes through both ends of the rear cover plate 12 in the thickness direction. The motor mounting bracket 3 is provided at the air inlet 121 and connected to the rear cover plate 12, and the motor is fixed to the rear cover plate 12 through the motor mounting bracket 3.

[0065] Furthermore, if Figure 1 and Figure 3 As shown, the volute mounting bracket 2 is fixed on an end surface of the rear cover plate 12 away from the front cover plate 11, and the volute 1 is fixed to the wall through the volute mounting bracket 2. Specifically, the number of the volute mounting brackets 2 in this embodiment is two, and the two volute mounting brackets 2 are respectively mounted on both sides of the motor mounting bracket 3. The volute mounting bracket 2 is provided with a third mounting hole 21, and the third mounting hole 21 and the wall can be connected by fasteners such as bolts to achieve the connection between the volute 1 and the wall.

[0066] In other alternative embodiments, the number of the volute mounting brackets 2 can be greater (three or more), and can be specifically designed according to actual needs.

[0067] like Figure 3-Figure 6As shown, the motor mounting bracket 3 includes a through hole 31 and a first mounting hole 32. The through hole 31 passes through both ends of the motor mounting bracket 3 in the thickness direction, and the through hole 31 is used to allow the motor to pass through. The inner peripheral wall of the through hole 31 can fit with the outer peripheral wall of the motor. The first mounting hole 32 passes through both ends of the motor mounting bracket 3 in the thickness direction, and the first mounting hole 32 is used for the vibration isolation member 4 and the fasteners connecting the motor to pass through. The vibration isolation member 4 passes through the first mounting hole 32 and abuts against the two end surfaces in the thickness direction of the motor mounting bracket 3. The fasteners pass through and connect the vibration isolation member 4 and the second mounting hole on the outer shell of the motor to achieve the connection between the motor and the motor mounting bracket 3.

[0068] Specifically, Figure 7 and Figure 8 As shown, the vibration isolator 4 includes a first abutting portion 41, a second abutting portion 42 and a connecting portion 43, the first abutting portion 41 and the second abutting portion 42 are installed at the axial ends of the connecting portion 43, the connecting portion 43 passes through the first mounting hole 32, the first abutting portion 41 and the second abutting portion 42 are respectively arranged on both sides of the thickness direction of the motor mounting bracket 3, and the end surfaces of the first abutting portion 41 and the second abutting portion 42 facing each other are respectively abutted against the two end surfaces in the thickness direction of the motor mounting bracket 3, and the vibration isolator 4 is installed on the motor mounting bracket 3 by the cooperation of the first abutting portion 41 and the second abutting portion 42. A connecting hole for the fastener to pass through is provided inside the vibration isolator 4, and the vibration isolator 4 can be connected to the fastener by means of threaded connection or the like.

[0069] Furthermore, if Figure 4 As shown, the first mounting hole 32 is an elongated hole, and the circumferential length of the first mounting hole 32 is greater than the circumferential length of the vibration isolator 4 in the through hole 31 , so that the vibration isolator 4 can move in the circumferential direction of the through hole 31 relative to the first mounting hole 32 .

[0070] In this embodiment, the vibration isolator 4 is clamped on both sides of the motor mounting bracket 3, and the abutment mode allows the vibration isolator 4 to move relative to the motor mounting bracket 3. When the vibration of the motor is large, the vibration isolator 4 can move in the first mounting hole 32 along the circumferential direction of the through hole 31 to prevent the structural deformation of the vibration isolator 4, ensure the vibration isolation effect of the vibration isolator 4, reduce the transmission of vibration, reduce noise, and the movable vibration isolator 4 will not generate a reverse force on the motor to cause disorder in the motor order vibration.

[0071] Specifically, Figure 4As shown, the first mounting hole 32 in this embodiment is gourd-shaped, and the first mounting hole 32 includes a partially overlapping first mounting hole unit 321 and a second mounting hole unit 322. The diameter of the first mounting hole unit 321 is greater than the diameter of the second mounting hole unit 322, and the diameter of the connecting portion 43 of the vibration isolator 4 is greater than the length of the boundary line between the first mounting hole unit 321 and the second mounting hole unit 322. In the initial state, the vibration isolator 4 is arranged in the first mounting hole unit 321. Since the diameter of the connecting portion 43 of the vibration isolator 4 is greater than the length of the boundary line between the first mounting hole unit 321 and the second mounting hole unit 322, the vibration isolator 4 will not move in the first mounting hole 32 when the vibration of the motor is small. Only when the vibration of the motor exceeds a certain threshold value, the vibration isolator 4 will move from the first mounting hole unit 321 to the second mounting hole unit 322. This embodiment restricts the vibration isolator 4 from moving when the vibration of the motor is small, thereby avoiding the situation where the vibration isolator 4 has no space to move when the vibration of the motor is large.

[0072] In other alternative embodiments, the shape of the first mounting hole 32 may also be other shapes that can achieve the above functions, such as an oblong shape.

[0073] Furthermore, if Figure 1-Figure 3 As shown, in this embodiment, there are multiple first mounting holes 32, and the multiple first mounting holes 32 are arranged at intervals along the circumference of the through hole 31. The number of second mounting holes, vibration isolators 4 and fasteners is the same as that of the first mounting holes 32, and they are all arranged in a one-to-one correspondence with the first mounting holes 32 to improve the connection strength between the motor and the motor mounting bracket 3 and improve the reliability of the connection.

[0074] Furthermore, if Figure 3 As shown, the line connecting the centers of the third mounting holes 21 of the two volute mounting brackets 2 passes through the central axis of the through hole 31, which facilitates the modal decoupling of the motor mounting bracket 3 and the rear cover plate 12 of the volute 1 and is not likely to cause resonance of the rear cover of the volute 1.

[0075] In other alternative embodiments, the volute mounting bracket 2 may also be installed at other positions on the rear cover plate 12 .

[0076] like Figure 3-Figure 6 As shown, the motor mounting bracket 3 in this embodiment is a "X"-shaped structure, and the motor mounting bracket 3 further includes a fixing portion 33 , a supporting portion 34 , a mounting portion 35 and a reinforcing portion 36 .

[0077] like Figure 3-Figure 6As shown, the mounting portion 35 in this embodiment is an annular structure, and the number of the fixing portion 33 and the supporting portion 34 are both two. The two fixing portions 33 and the corresponding supporting portions 34 are respectively connected to the two sides of the mounting portion 35 in the diameter direction of the through hole 31 to ensure the stability of the connection. The fixing portion 33 and the mounting portion 35 extend along the diameter direction of the through hole 31 (i.e., the direction of the line connecting the centers of the third mounting holes 21 of the two volute mounting brackets 2), one end of the fixing portion 33 is connected to the rear cover plate 12, and the other end of the fixing portion 33 is connected to the supporting portion 34. The other end of the supporting portion 34 extends along the axial direction of the through hole 31 in a direction away from the rear cover plate 12 and is connected to the mounting portion 35. The through hole 31 and the first mounting hole 32 are provided on the mounting portion 35. Among them, the other end of the supporting portion 34 mentioned in this embodiment extends along the axial direction of the through hole 31, which does not mean that the extension direction of the supporting portion 34 needs to be completely flush with the axial direction of the through hole 31, but the two can be roughly flush.

[0078] The motor mounting bracket 3 in this embodiment is a stepped structure, which increases the strength of the motor mounting bracket 3 as a whole (especially the middle part of the motor mounting bracket 3), greatly reduces the risk of modal coupling and modal density, and improves the adaptability of the entire fan system.

[0079] In other alternative embodiments, the mounting portion 35 may also be in other structural forms. For example, the outer periphery of the mounting portion 35 is rectangular, and the number of the fixing portions 33 and the supporting portions 34 may also be designed to be other numbers according to actual conditions.

[0080] Furthermore, if Figure 3-Figure 6 As shown, the fixing portion 33 includes two fixing units 331, and the two fixing units 331 are arranged at intervals to ensure the air intake of the air inlet 121. One end of the two fixing units 331 is connected to the rear cover plate 12, and the other end of the two fixing units 331 is connected to the support portion 34. The design of the two fixing units 331 can increase the connection area between the fixing portion 33 and the rear cover plate 12 of the volute 1, and improve the connection strength.

[0081] In other alternative embodiments, the number of fixing units 331 in a single fixing portion 33 can be designed to be other numbers according to actual needs, and the number of fixing units 331 in different fixing portions 33 can be the same or different.

[0082] Furthermore, if Fig. 9As shown, the connection between the fixing portion 33 and the supporting portion 34 forms a first angle α, and the connection between the supporting portion 34 and the mounting portion 35 forms a second angle β. In this embodiment, the angles of the first angle α and the second angle β are both 120°. In other alternative embodiments, the angles of the first angle α and the second angle β may be the same or different. The angles of the first angle α and the second angle β may also be selected from other values, preferably within the range of 115°-125°, for example, values ​​such as 115°, 117°, 122°, and 125° may be selected.

[0083] In this embodiment, the fixing portion 33 and the supporting portion 34 are arranged relatively inclined, and the supporting portion 34 and the mounting portion 35 are arranged relatively inclined, which can improve the strength of the motor mounting bracket 3 and effectively increase the weight of the motor and its torsion and bending deformation during operation.

[0084] like Figure 6 As shown, the reinforcement part 36 is an annular structure, and the reinforcement part 36 is arranged around the outer circumference of the through hole 31 and fixed on the mounting part 35. The reinforcement can enhance the rigidity of the through hole 31, so that the area around the through hole 31 is not easily deformed after the motor is installed.

[0085] The fixing portion 33 , the supporting portion 34 , the mounting portion 35 and the reinforcing portion 36 in the present embodiment are integrally formed. In other alternative implementations, they may also be separately formed and then installed.

[0086] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings of the devices or components, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0087] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A fan system for a range hood, characterized in that: The fan system of the range hood includes a volute, a motor, a motor mounting bracket, vibration isolation parts and fasteners; The volute comprises a rear cover plate, an air inlet is arranged on the rear cover plate, and the motor mounting bracket is arranged at the air inlet and connected to the rear cover plate; The motor mounting bracket comprises a through hole and a first mounting hole, the motor passes through the through hole, the vibration isolator passes through the first mounting hole and abuts against both end surfaces of the motor mounting bracket in the thickness direction, a second mounting hole is provided on the housing of the motor, and the fastener connects the second mounting hole and the vibration isolator; The first mounting hole is an elongated hole, the length of the first mounting hole in the circumferential direction of the through hole is greater than the length of the vibration isolator in the circumferential direction of the through hole, and the vibration isolator can move in the circumferential direction of the through hole relative to the first mounting hole.

2. The fan system of the range hood according to claim 1, characterized in that: The vibration isolation member includes a first abutment portion, a second abutment portion and a connecting portion, wherein the first abutment portion and the second abutment portion are installed at two axial ends of the connecting portion, and the connecting portion passes through the first mounting hole. End surfaces of the first abutment portion and the second abutment portion facing each other are respectively abutted against two end surfaces in the thickness direction of the motor mounting bracket.

3. The fan system of the range hood according to claim 2, characterized in that: The first mounting hole is gourd-shaped, and the first mounting hole includes a partially overlapping first mounting hole unit and a second mounting hole unit. The diameter of the first mounting hole unit is larger than the diameter of the second mounting hole unit, and the diameter of the connecting portion is larger than the length of the boundary line between the first mounting hole unit and the second mounting hole unit.

4. The fan system of the range hood according to claim 1, characterized in that: There are a plurality of first mounting holes, and the plurality of first mounting holes are arranged at intervals along the circumference of the through hole; The number of the second mounting holes, the vibration isolators and the fasteners is the same as that of the first mounting holes, and they are all arranged in a one-to-one correspondence with the first mounting holes.

5. The fan system of a range hood according to any one of claims 1 to 4, characterized in that: The motor mounting bracket includes a fixing portion, a supporting portion and a mounting portion, wherein the fixing portion and the mounting portion extend along the diameter direction of the through hole, one end of the fixing portion is connected to the rear cover plate, and the other end of the fixing portion is connected to the supporting portion, and the other end of the supporting portion extends along the axial direction of the through hole in a direction away from the rear cover plate and is connected to the mounting portion, and the through hole and the first mounting hole are arranged on the mounting portion.

6. The fan system of the range hood according to claim 5, characterized in that: A first angle is formed at the connection between the fixing portion and the supporting portion, and the angle of the first angle is 115°-125°; And / or, a second angle is formed at a connection between the support portion and the mounting portion, and the angle of the second angle is 115°-125°.

7. The fan system of the range hood according to claim 5, characterized in that: The fixing portion includes a plurality of fixing units, the plurality of fixing units are arranged at intervals, one end of the plurality of fixing units is connected to the rear cover plate, and the other end of the plurality of fixing units is connected to the supporting portion.

8. The fan system of the range hood according to claim 5, characterized in that: The motor mounting bracket further includes a reinforcing portion, which is an annular structure and is disposed around the outer circumference of the through hole and fixed on the mounting portion.

9. The fan system of the range hood according to claim 5, characterized in that: The fan system of the range hood also includes at least two volute mounting brackets, which are fixed to the rear cover plate. The volute mounting brackets are provided with a third mounting hole, and a line connecting the centers of the third mounting holes of the two volute mounting brackets passes through the central axis of the through hole.

10. A range hood, characterized in that: The range hood comprises a fan system for the range hood as claimed in any one of claims 1 to 9.

Images