CN213655211U

CN213655211U - Bilateral air intake fan

Info

Publication number: CN213655211U
Application number: CN202022877221.0U
Authority: CN
Inventors: 刘渊; 张嵩海
Original assignee: Rosenberg Ventilations & Energy Systems Shanghai Co ltd
Current assignee: Rosenberg Ventilations & Energy Systems Shanghai Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-07-09
Anticipated expiration: 2030-12-02

Abstract

The utility model provides a two side air intake fan, including the spiral case, through the support mounting in motor in the spiral case with be fixed in impeller on the motor, be equipped with two mutual dispositions's air intake and intercommunication on the spiral case the air exit of air intake, the support includes through fixed foot supporting in the disk body of air intake department, locate place the chamber on the disk body, locate place the elastic sleeve of intracavity, locate place the hole on the elastic sleeve and locate place the axle sleeve in the hole, be equipped with the shaft hole on the axle sleeve, the motor includes the external rotor and inserts motor shaft in the shaft hole, the impeller is located on the external rotor, place the chamber with the contact surface of elastic sleeve the axle sleeve with the contact surface of placing the hole is the back taper. The conical surfaces are adopted for matching, so that the installation is convenient, the manufacturing errors can be well compensated, the matching is tight, and the shaking and the vibration are not easy to occur.

Description

Bilateral air intake fan

Technical Field

The utility model relates to a fan technical field especially relates to a two side air intake fans.

Background

The fan adopts external rotor electric machine drive impeller mostly, and during the operation, the motor shaft that links to each other with the support does not change, and the external rotor drives the impeller and rotates, and the motor shaft can produce a moment of torsion to the support this moment, if be rigid connection between motor shaft and the support, then damage the support easily, cause the fan life-span to reduce, and current solution is to install an elastic sleeve as elastic damping additional between motor shaft and support and cushion the moment of torsion, and this kind of solution has following defect: due to the influence of manufacturing errors, the elastic sleeve may be difficult to assemble and disassemble due to over-tight fit or shake and vibrate due to over-loose fit.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a bilateral air intake fan which is convenient to assemble and disassemble and is tightly matched,

the utility model discloses a this technical problem is solved to following mode:

the utility model provides a two side air intake fan, include the spiral case, through the support mounting in motor in the spiral case with be fixed in impeller on the motor, be equipped with two mutual disposition's air intake and intercommunication on the spiral case the air exit of air intake, the support includes through fixed foot supporting in the disk body of air intake department, locates place the chamber on the disk body, locate place the elasticity cover of intracavity, locate place the hole on the elasticity cover and locate place the axle sleeve in the hole, be equipped with the shaft hole on the axle sleeve, the motor includes the external rotor and inserts motor shaft in the shaft hole, the impeller is located on the external rotor, its characterized in that: the contact surfaces of the placing cavity and the elastic sleeve and the contact surfaces of the shaft sleeve and the placing hole are inverted conical surfaces.

The elastic sleeve adopts the conical surface for matching, so that the installation is convenient, the manufacturing error can be well compensated, the matching is tight, and the shaking and the vibration are not easy to occur.

As a preferred embodiment of the present invention, the taper angle of the inverted conical surface is 0.5 ° to 2 °.

As a preferred embodiment of the present invention, the rotation stopping structure is disposed on the contact surface of the placing cavity and the elastic sleeve and on the contact surface of the placing hole and the shaft sleeve.

As an embodiment of the present invention, the rotation stopping structure includes a groove for receiving the rib, and a protrusion extending from the groove to the groove for receiving the rib. Thereby avoiding relative rotation among the placing cavity, the elastic sleeve and the shaft sleeve.

As a preferred embodiment of the utility model, disk body and axle sleeve are the aluminum alloy material, the elastic sleeve is the rubber material.

More than synthesizing, the utility model discloses a two side air inlet fan has little, the simple to operate of vibration noise, the inseparable advantage of cooperation.

Drawings

The invention will be further described with reference to the accompanying drawings:

fig. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of a stent;

FIG. 3 is a view of the bracket coupled to the motor;

100-volute casing, 110-air inlet, 120-air outlet, 200-bracket, 210-disk body, 211-placing cavity, 212-convex edge, 220-fixing foot, 230-elastic sleeve, 231-first groove, 232-placing hole, 233-second groove, 240-shaft sleeve, 241-embedded edge, 242-shaft hole, 300-motor, 310-motor shaft, 320-outer rotor and 400-impeller.

Detailed Description

The invention is further illustrated below by means of specific examples:

as shown in fig. 1, a double-side intake blower includes a volute 100, a motor 300 fixed in the volute 100 by a bracket 200, and an impeller 400 disposed on the motor 300.

The spiral case 100 is provided with a circular air inlet 110 at each of two ends thereof, the two air inlets 110 are oppositely arranged, and an air outlet 120 is provided at the front side of the spiral case 100, and the air outlet 120 is communicated with the air inlets 110.

As shown in fig. 2, the two brackets 200 are made of aluminum alloy, and include a tray body 210, a fixing leg 220, an elastic sleeve 230 and a sleeve 240. Three fixing legs 220 radially extend outward from the outer side of the tray body 210 and are connected to the edge of the intake vent 110, a placing cavity 211 is formed in the tray body 210, and three ridges 212 are circumferentially arranged on the inner wall of the placing cavity 211.

The elastic sleeve 230 is made of rubber and is arranged in the placing cavity 211, a first groove 231 corresponding to the protruding rib 212 is formed in the outer circumferential wall of the elastic sleeve 230, the protruding rib 212 is clamped in the first groove 231 of the elastic sleeve 230, a placing hole 232 is formed in the center of the elastic sleeve 230, and three second grooves 233 are circumferentially arranged on the inner circumferential wall of the placing hole 232.

The shaft sleeve 240 is made of aluminum alloy and is disposed in the placement hole 232 of the elastic sleeve 230, an embedding edge 241 is disposed on the outer circumferential wall of the shaft sleeve 240 and is clamped in the second groove 233, and a square shaft hole 242 is disposed at the center of the shaft sleeve 240.

Referring to fig. 1 and 3, the two motors 300 include a motor shaft 310 and an outer rotor 320 connected to the motor shaft 310, the outer rotors 320 of the two motors 300 are connected to each other, and the motor shaft 310 extends into the shaft hole 242 of the shaft sleeve 240 respectively. The impeller 400 is fixed to the outer rotor 320.

The elastic sleeve 230 can buffer the torque applied to the support 200 when the motor 300 is started, reduce metal fatigue, prolong the service life of the support and further prolong the whole service life of the motor 300. And also has a shock-absorbing function to reduce vibration and noise during the operation of the motor 300.

Due to the influence of manufacturing errors, the placement cavity 211, the elastic sleeve 230, and the shaft sleeve 240 may be difficult to assemble and disassemble due to too tight fit or shake and vibrate due to too loose fit.

In order to solve the above problem, the contact surfaces of the placing cavity 211 and the elastic sleeve 230, and the contact surfaces of the sleeve 240 and the placing hole 232 are reverse tapered surfaces. The taper angle of the reverse tapered surface is 1 deg., and the receiving cavity 211, the elastic sleeve 230, and the shaft sleeve 240 are fixedly installed in a tapered fit with each other.

The conical surfaces are adopted for matching, so that the elastic sleeve 230 can be conveniently placed in the placing cavity 211, the shaft sleeve 240 can be conveniently placed in the placing hole 232, the installation and the fixation are realized in a pressing mode, and the problem of difficult installation can be avoided. In addition, the placing cavity 211, the elastic sleeve 230 and the shaft sleeve 240 are transited through the conical surfaces, so that manufacturing errors can be well compensated, the placing cavity, the elastic sleeve 230 and the shaft sleeve 240 are matched tightly, and shaking and vibration are not easy to occur.

However, those skilled in the art should realize that the above embodiments are only for illustrative purposes and are not to be used as limitations of the present invention, and that changes and modifications to the above embodiments are intended to fall within the scope of the appended claims, as long as they fall within the true spirit of the present invention.

Claims

1. A bilateral air intake fan comprises a volute (100), a motor (300) and an impeller (400), wherein the motor (300) is installed in the volute (100) through a support (200), the impeller (400) is fixed on the motor (300), two air inlets (110) which are oppositely arranged and an air outlet (120) communicated with the air inlets (110) are formed in the volute (100), the support (200) comprises a disk body (210) which is supported at the air inlets (110) through fixing feet (220), a placing cavity (211) which is arranged on the disk body (210), an elastic sleeve (230) which is arranged in the placing cavity (211), a placing hole (232) which is arranged on the elastic sleeve (230) and a shaft sleeve (240) which is arranged in the placing hole (232), a shaft hole (242) is formed in the shaft sleeve (240), the motor (300) comprises an outer rotor (320) and a motor shaft (310) which is inserted into the shaft hole (242), the impeller (400) is arranged on the outer rotor (320), and is characterized in that: the contact surfaces of the placing cavity (211) and the elastic sleeve (230) and the contact surfaces of the shaft sleeve (240) and the placing hole (232) are all inverted conical surfaces.

2. The double-sided air intake fan according to claim 1, characterized in that: the cone angle of the inverted conical surface is 0.5-2 degrees.

3. The double-sided air intake fan according to claim 2, characterized in that: and rotation stopping structures are arranged on the contact surfaces of the placing cavity (211) and the elastic sleeve (230) and the contact surfaces of the placing hole (232) and the shaft sleeve (240).

4. The double-sided air intake fan according to claim 3, characterized in that: the rotation stopping structure comprises a rib (212) arranged on the inner peripheral wall of the placement cavity (211), a first groove (231) arranged on the outer peripheral surface of the elastic sleeve (230), a second groove (233) arranged on the inner peripheral wall of the placement hole (232) of the elastic sleeve (230) and a flange (241) arranged on the outer peripheral wall of the shaft sleeve (240), wherein the rib (212) extends into the first groove (231), and the flange (241) extends into the second groove (233).

5. The double-sided air intake fan according to claim 1, characterized in that: the tray body (210) and the shaft sleeve (240) are made of aluminum alloy materials, and the elastic sleeve (230) is made of rubber materials.