CN218293903U - Fan system and range hood with same - Google Patents

Abstract

The utility model discloses a fan system and applied range hood that has this fan system, fan system includes the impeller, is used for driving impeller pivoted motor and screws the nut, and the impeller includes the rim plate, and the motor includes the output shaft, and the output shaft passes the rim plate and is connected with the rim plate through screwing the nut, screws the nut include with output end threaded connection screw, its characterized in that: the nut of screwing still including can offset and provide the pretension piece of axial pretightning force for the piece of screwing with the tip of output shaft, the pretension piece sets up in the one side that the output shaft was kept away from to the piece of screwing. Compared with the prior art, the utility model has the advantages of: through setting up the pretension piece, make the pretension piece can offset and provide the axial pretightning force for the piece of screwing with the tip of output shaft, do not change the operation habit, realize locking taking off under the prerequisite of convenient no special tool quick assembly disassembly, it is integrative good, need not to increase auxiliary member spare parts secondary locking such as extra bullet pad, round pin.

Description

Fan system and range hood with same

Technical Field

The utility model relates to a power device, especially a fan system, and applied range hood that has this fan system.

Background

The range hood is used as an essential kitchen appliance for each family, and has the functions of sucking oil smoke from an air inlet through an impeller rotating at a high speed in a volute, filtering the oil smoke by using the impeller, and discharging the filtered oil smoke from an air outlet to finish the purification work of kitchen air.

The chinese utility model patent with application number 202220245826.8 discloses a centrifugal fan, which comprises a volute, an impeller and a motor, wherein the volute comprises a first side plate, a second side plate and a ring wall, the first side plate and the second side plate are opposite and spaced from each other, the ring wall is connected between the first side plate and the second side plate, the impeller is arranged in the volute, the impeller comprises a middle disc and a wheel disc connected with the middle disc, the motor is arranged on the first side plate or the second side plate through a fixing bracket, and an output shaft of the motor is in transmission connection with the impeller; the motor is a bidirectional motor with an output shaft capable of rotating forward and backward, the centrifugal fan further comprises a locking nut, and the output shaft of the motor penetrates through the fixed shaft sleeve of the wheel disc to be connected with the locking nut.

The motor shaft and the impeller of traditional range hood pass through impeller wheel hub and are connected, and the reuse nut of screwing is screwed (for making things convenient for the dismouting service, range hood generally adopts the special-shaped nut that the workman can hand screw), and the impeller is infected with the greasy dirt after using a period, and dynamic balance variation, increase such as vibration, impact can influence the reliability that the nut of screwing is connected, appears even that the nut of screwing is not hard up, drops, causes the trouble easily. Especially, the range hood with the forward and reverse rotation cleaning function is easy to loosen and fall off.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve provides a fan system to the not enough of above-mentioned prior art existence, can realize the locking pine of the nut of screwing and take off.

The utility model aims to solve the second technical problem that a range hood that uses there is above-mentioned fan system is provided.

The utility model provides a technical scheme that above-mentioned first technical problem adopted is: the utility model provides a fan system, includes the impeller, is used for driving impeller pivoted motor and the nut of screwing, the impeller includes the rim plate, the motor includes the output shaft, the output shaft passes the rim plate and is connected with the rim plate through the nut of screwing, the nut of screwing includes the piece of screwing with output end threaded connection, its characterized in that: the nut of screwing still includes can offset and provide the pretension piece of axial pretightning force for the piece of screwing with the tip of output shaft, the pretension piece sets up the one side of keeping away from the output shaft at the piece of screwing. Through setting up the pretension piece, make the pretension piece can offset and provide the axial pretightning force for the piece of screwing in with the tip of output shaft, do not change the operation habit, realize locking taking off under the prerequisite of convenient no special tool quick assembly disassembly, it is integrative good, need not to increase auxiliary member spare parts secondary locking such as extra bullet pad, round pin.

Set up screw member and pretension piece for being convenient for fixed, be convenient for screw member and pretension piece respectively with the cooperation of output shaft, the nut of screwing of the manual operation of being convenient for simultaneously provides application of force position, the nut of screwing still includes the nut body of screwing, pretension piece and the fixed setting of screwing are internal at the nut body of screwing.

In order to provide the pretightening force of the screwing nut body, the pretightening piece is a sheet-shaped elastic piece and comprises a pretightening piece body connected with the screwing nut body and a protrusion protruding towards the end part direction of the output shaft on the pretightening piece body, and the protrusion can be abutted against the end part of the output shaft.

In order to fix the preload piece in the tightening nut body, the preload piece body is clamped with the tightening nut body.

In order to prevent the preload piece body from rotating relative to the screwing nut body, a groove is formed in the peripheral portion of the preload piece body, the groove is formed by sinking the outer side of the peripheral portion of the preload piece body towards the inner side direction, a clamping block is formed in the screwing nut body at a position corresponding to the groove, and the clamping block is clamped in the groove.

In order to increase the elasticity of the preload piece body and provide a larger deformation space, a through hole is formed in the preload piece body at the position of the periphery of the protrusion.

In order to realize the connection with the output shaft, the screwing nut comprises a screwing piece which is used for being in threaded connection with the outer periphery of the output shaft, and the screwing piece is arranged on the screwing nut body.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: a range hood, its characterized in that: a fan system as described above is applied.

Compared with the prior art, the utility model has the advantages of: through setting up the pretension piece, make the pretension piece can offset and provide the axial pretightning force for screwing up the piece with the tip of output shaft, not changing the operation custom, realize locking pine taking off under the prerequisite of convenient no special tool quick assembly disassembly, it is integrative good, need not to increase auxiliary member spare parts secondary locking such as extra bullet pad, round pin.

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 the range hood according to the embodiment of the present invention;

FIG. 3 is an enlarged view of portion I of FIG. 2;

fig. 4 is a schematic view of a screwing nut of the range hood according to the embodiment of the present invention;

fig. 5 is an exploded view of a screwing nut of the range hood according to the embodiment of the present invention;

fig. 6 is a schematic view of a preload member of a screwing nut of a range hood according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of the screwing nut 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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the invention can be arranged in different orientations, these directional terms are for illustrative purposes only and should not be considered as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 2, a range hood includes a fan system 1, where the fan system 1 includes a volute 11, an impeller 12 disposed in the volute 11, a motor 13 for driving the impeller 12 to rotate, and a screwing nut 14.

The impeller 12 includes a first end ring 122, a second end ring 123, a center disk assembly disposed between the first end ring 122 and the second end ring 123, and a plurality of blades 124 passing through the first end ring 122, the center disk assembly, and the second end ring 123, the blades 124 being arranged at intervals along the circumferential direction of the first end ring 122 (the second end ring 123), and the structure is the same as that of the prior art. The middle disc assembly includes a middle disc body 125 connected with the blades 124, and a wheel disc 121 disposed at a middle portion of the middle disc body 125. In this embodiment, the fan system 1 is a double-inlet fan, alternatively, a single-inlet fan, and the central disk body 125 is not provided, but the central disk body still includes the wheel disk 121, for example, the central disk 121 is integrated with the second end ring 123, and the above structure is also the same as the prior art.

The motor 13 includes an output shaft 131, the output shaft 131 penetrates the wheel disc 121 along the axial direction of the impeller 12 and is connected with the wheel disc 121 through a tightening nut 14, the tightening nut 14 includes a tightening nut body 141, and the tightening nut body 141 can facilitate manual grasping of the tightening nut 14 for tightening operation, that is, the tightening nut 14 constitutes a conventional hand nut.

Referring to fig. 3 to 7, the fastening nut 14 further includes a tightening member 142 capable of abutting against the end of the output shaft 131 and a fastening member 143 for screwing with the outer periphery of the output shaft 131, and the tightening member 142 and the fastening member 143 are fixedly disposed in the fastening nut body 141.

The biasing member 142 is a disk-shaped elastic member located on a side of the tightening member 143 away from the output shaft 131. The preload tool 142 includes a preload tool body 1421 connected to the tightening nut body 141, and a projection 1422 recessed and protruding toward the front end of the output shaft 131 on the preload tool body 1421, and the projection 1422 can abut on the end of the output shaft 131.

The tightening nut body 141 is engaged with the circumferential portion of the tightening nut body 1421, thereby preventing the tightening nut body 1421 from rotating in the tightening nut body 141. In the present embodiment, a groove 14211 is formed on the circumference of the preload member body 1421, and the groove 14211 is formed by recessing the outer side of the circumference of the preload member body 1421 toward the inner side. A latching block 1411 is formed in the tightening nut body 141 at a position corresponding to the groove 14211, and the latching block 1411 can be latched into the groove 14211, thereby preventing the preload member body 1421 from rotating in the tightening nut body 141.

A through hole 14212 is formed in the preload member body 1421 at a position on the outer periphery of the projection 1422, thereby serving as a stiffness reduced area and providing a margin for deformation of the preload member 142.

After the nut 14 is screwed to the output shaft 131 of the motor 13, the pre-tightening member 142 can be compressed and deformed along the axial direction of the impeller 12, and provides a pre-tightening force to abut against the front end surface of the output shaft 131, so as to provide an axial anti-loosening pre-tightening force to the screwing member 143, where the axial direction is the axial direction of the impeller 12 (also the axial direction of the output shaft 131 of the motor 13). The screwing nut 14 has good integrity, and does not need to be additionally provided with auxiliary parts such as an elastic cushion, a pin and the like for secondary looseness prevention.

In the embodiment, the fan system 1 is used in a range hood, and alternatively, may be used in other occasions where such a power device is needed.

Claims (7)

1. A fan system comprises an impeller (12), a motor (13) and a screwing nut (14), wherein the motor (13) is used for driving the impeller (12) to rotate, the impeller (12) comprises a wheel disc (121), the motor (13) comprises an output shaft (131), the output shaft (131) penetrates through the wheel disc (121) and is connected with the wheel disc (121) through the screwing nut (14), the screwing nut (14) comprises a screwing piece (143) in threaded connection with the output shaft (131), and the fan system is characterized in that: the tightening nut (14) further comprises a tightening piece (142) capable of abutting against the end of the output shaft (131) to provide axial pre-tightening force for the tightening piece (143), and the tightening piece (142) is arranged on the side, away from the output shaft (131), of the tightening piece (143).

2. The fan system of claim 1, wherein: the tightening nut (14) further comprises a tightening nut body (141), and the preload piece (142) and the tightening piece (143) are fixedly arranged in the tightening nut body (141).

3. The fan system of claim 2, wherein: the preload piece (142) is a sheet-shaped elastic piece, the preload piece (142) comprises a preload piece body (1421) connected with the tightening nut body (141) and a protrusion (1422) protruding towards the end part direction of the output shaft (131) on the preload piece body (1421), and the protrusion (1422) can be abutted against the end part of the output shaft (131).

4. The fan system of claim 3, wherein: the preload piece body (1421) is clamped with the screwing nut body (141).

5. The fan system of claim 4, wherein: the periphery of the preload part body (1421) is provided with a groove (14211), the groove (14211) is formed by recessing the periphery of the preload part body (1421) towards the inner side, a clamping block (1411) is formed in the screwing nut body (141) at a position corresponding to the groove (14211), and the clamping block (1411) is clamped in the groove (14211).

6. The fan system of claim 3, wherein: the position of the preload part body (1421) on the periphery of the protrusion (1422) is provided with a through hole (14212).

7. A range hood, its characterized in that: use of a fan system according to any of claims 1-6.

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