CN217926470U

CN217926470U - Centrifugal fan

Info

Publication number: CN217926470U
Application number: CN202220489565.0U
Authority: CN
Inventors: 朱祎; 赵志豪
Original assignee: Taicang Baocang Ventilation Equipment Co ltd
Current assignee: Taicang Baocang Ventilation Equipment Co ltd
Priority date: 2021-12-28
Filing date: 2022-03-02
Publication date: 2022-11-29
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a centrifugal fan, which comprises a supporting component, wherein the supporting component comprises a base and a plurality of shock absorbers, and the shock absorbers are all arranged on the bottom surface of the base; the fan assembly comprises a casing, impellers and heat insulation pieces, the casing is arranged on the top surface of the base, the heat insulation pieces are coated on the outer surface of the casing, blades of the impellers are S-shaped and are uniformly distributed along the circumferential direction, and an air duct which is gradually narrowed along the direction from the edge to the center of each impeller is formed between the blades of the adjacent impellers; the transmission assembly comprises a motor, a belt transmission mechanism, a bearing box and a transmission shaft, the transmission assembly is installed on the top surface of the base, the transmission shaft is rotatably installed in the bearing box, the bearing box is extended from the two ends of the transmission shaft, one end of the transmission shaft is extended into the casing and connected with the impeller, and the other end of the transmission shaft is connected with the motor through the belt transmission mechanism. The utility model provides a how can effectively improve centrifugal fan's life's technical problem, have small in noise, long service life and maintenance cost low grade advantage.

Description

Centrifugal fan

Technical Field

The utility model belongs to the technical field of the fan technique and specifically relates to indicate a hot-blast centrifugal fan.

Background

The centrifugal fan is a driven fluid machine which accelerates, decelerates and changes the flow direction of gas by utilizing an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and the gas is finally discharged from an air outlet. The existing centrifugal fan has the following defects: firstly, due to the lack of a buffer mechanism and high rotating speed, the service life is short and the noise in the operation process is large; secondly, the impeller of present centrifugal fan all is by the motor shaft direct drive rotation of motor, so lead to carry the heat can transmit to lead to the motor in a large number on to lead to motor life short, the fault rate is high.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to effectively prolong the service life of the centrifugal fan.

In order to solve the technical problem, the utility model provides a centrifugal fan, which comprises a supporting component, wherein the supporting component comprises a base and a plurality of shock absorbers, and the shock absorbers are all arranged on the bottom surface of the base;

the fan assembly comprises a casing, impellers and heat insulation pieces, the casing is installed on the top surface of the base, the heat insulation pieces are coated on the outer surface of the casing, blades of the impellers are S-shaped and are uniformly distributed along the circumferential direction, and air channels which are gradually narrowed along the direction from the edge to the center of the impeller are formed between the adjacent blades of the impellers;

the transmission assembly, the transmission assembly includes motor, belt drive mechanism, bearing box and transmission shaft, the transmission assembly is installed on the top surface of base, the transmission shaft rotates to be installed in the bearing box, the both ends of transmission shaft all stretch out the bearing box, and one end stretches into the casing and with the impeller links to each other, the other end pass through belt drive mechanism with the motor links to each other.

The utility model discloses an embodiment, belt drive mechanism includes the action wheel, follows driving wheel and belt, the fixed suit of action wheel is in on the output shaft of motor, follow the fixed suit of driving wheel and be in on the transmission shaft, the belt is established the action wheel with from driving wheel is last.

In an embodiment of the present invention, the driving wheel and the driven wheel are embedded with a belt groove.

In an embodiment of the present invention, the motor is a servo motor.

In an embodiment of the present invention, the transmission assembly further includes a plurality of flywheels, and the flywheels are mounted on the transmission shaft at equal intervals.

In one embodiment of the present invention, the inner surface of the casing and the impeller are coated with a high temperature resistant layer.

In one embodiment of the present invention, the thickness of the high temperature resistant layer is 25um to 45um.

In an embodiment of the present invention, the heat insulation member is a rock wool layer.

In an embodiment of the present invention, the inner wall of the air inlet of the housing is movably mounted with a high temperature resistant filter screen.

In an embodiment of the present invention, the air inlet of the casing and the air outlet of the casing are both provided with flanges.

Compared with the prior art, the technical scheme of the utility model have following advantage:

1. through the setting of bumper shock absorber for the shaking force that fan subassembly and transmission assembly received is little and the noise that produces in the operation process is little.

2. Through the mode that the outer surface at the casing cladding heat insulating part, and the motor does not directly drive impeller rotatory, effectively eliminated the influence of heat to the motor to effectively prolonged life greatly, and reduced operation noise and maintenance cost.

3. The blades of the impeller are set to be S-shaped, and an air channel gradually reduced and narrowed along the edge of the impeller to the center direction is formed between the blades of the adjacent impeller, so that air guiding is smooth, the received resistance is small, the impact force is small, and the air outlet quantity is large.

Drawings

In order to make the content of the invention more clearly understood, the invention will now be described in further detail with reference to specific embodiments thereof, in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is a schematic view of the impeller of the present invention;

the specification reference numbers indicate: 1. the device comprises a supporting component, 11, a base, 12, a shock absorber, 2, a fan component, 21, a shell, 22, an impeller, 23, a heat insulation piece, 24, an air duct, 3, a transmission component, 31, a motor, 32, a belt transmission mechanism, 33, a bearing box, 33 and a transmission shaft.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is intended to be illustrative and not restrictive, and furthermore, like reference numerals designate like elements throughout the embodiments.

Example 1:

referring to fig. 1, 2 and 3, the centrifugal fan comprises a support assembly 1, wherein the support assembly 1 comprises a base 11 and a plurality of shock absorbers 12, the shock absorbers 12 are arranged on the bottom surface of the base 11, and the shock absorbers 12 greatly reduce the vibration force and the noise generated in the operation process, so that the service life is prolonged.

The fan assembly 2 comprises a casing 21, impellers 22 and heat insulators 23, the casing 21 is installed on the top surface of the base 11, the heat insulators 23 coat the outer surface of the casing 21, blades of the impellers 22 are S-shaped and are uniformly distributed along the circumferential direction, an air duct 24 which is gradually narrowed along the direction from the edge of the impeller 22 to the center of the impeller 22 is formed between the blades of the adjacent impellers 22, and the blades of the impellers 22 are S-shaped, so that air guiding is smooth, and the received resistance is small; the wind channel 24 that forms simultaneously for the air output of this fan is big, and the impact that casing 21 received is little, has played increase of service life, and the noise can effectively be reduceed, and the stable effect of operation.

Drive assembly 3, drive assembly 3 includes motor 31, belt drive mechanism 32, bearing box 33 and transmission shaft 33, drive assembly 3 installs on the top surface of base 11, transmission shaft 33 rotates and installs in bearing box 33, bearing box 33 all stretches out at the both ends of transmission shaft 33, and one end stretches into casing 21 and links to each other with impeller 22, the other end passes through belt drive mechanism 32 and links to each other with motor 31, it rotates to drive impeller 22 through this kind of structure, not only improved driven stability, and make motor 31 indirect and impeller 22 contact, and cooperate heat insulating part 23, effectively avoided the heat transfer in the transport to motor 31 on, thereby reduced the maintenance cost, and life has been improved.

Example 2:

The fan assembly 2 comprises a casing 21, impellers 22 and heat insulation pieces 23, the heat insulation pieces 23 are coated on the outer surface of the casing 21, blades of the impellers 22 are S-shaped and are uniformly distributed along the circumferential direction, an air duct 24 which is gradually narrowed along the direction from the edge to the center of the impeller 22 is formed between the adjacent blades of the impellers 22, and the blades of the impellers 22 are S-shaped, so that air guiding is smooth, and the resistance to the air guiding is small; the air duct 24 formed at the same time ensures that the air output of the fan is large, the impact on the casing 21 is small, and the effect of prolonging the service life is also achieved. Casing 21 installs on the top surface of base 11, all coats on the internal surface of casing 21 and impeller 22 and has the high temperature resistant layer of thickness 25um-45um, sets up like this and not only makes casing 21's heat resistance good, non-deformable, long service life, has effectively avoided the thermal loss of transport hot-blast moreover. Both the air inlet of the machine shell 21 and the air outlet of the machine shell 21 are provided with flanges, so that the use convenience is improved. The inner wall of the air inlet of the casing 21 is movably provided with a high temperature resistant filter screen, so that impurities are effectively prevented from entering the air inlet and being impacted and damaged under the driving of air flow.

Drive assembly 3, drive assembly 3 includes servo motor 31, belt drive 32, bearing box 33, transmission shaft 33 and a plurality of flywheel, drive assembly 3 installs on the top surface of base 11, transmission shaft 33 rotates and installs in bearing box 33, a plurality of flywheels equip at the part that transmission shaft 33 is located bearing box 33 with equal intervals, bearing box 33 all stretches out at the both ends of transmission shaft 33, and one end stretches into casing 21 and links to each other with impeller 22, the other end passes through belt drive 32 and links to each other with servo motor 31. Therefore, the motor 31 is not directly contacted with the impeller 22 and is matched with the heat insulation piece 23, heat in conveying is effectively prevented from being transferred to the motor 31, maintenance cost is reduced, and service life is prolonged. The servo motor 31 is arranged so that the speed of the feed can be adjusted as desired. The arrangement of the plurality of flywheels increases the running inertia of the transmission shaft 33, reduces the running vibration amplitude and prolongs the service life.

Specifically, the heat insulation members 23 in the two embodiments are rock wool layers, and the belt transmission mechanism 32 is composed of a driving wheel, a driven wheel and a belt, the driving wheel is fixedly sleeved on the output shaft of the motor 31, the driven wheel is fixedly sleeved on the transmission shaft 33, and the belt is arranged on the driving wheel and the driven wheel. The driving wheel and the driven wheel are respectively and annularly embedded with a belt groove, so that the stability of transmission is improved.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Various other modifications and alterations will occur to those skilled in the art upon reading the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. A centrifugal fan is characterized by comprising

The supporting component comprises a base and a plurality of dampers, and the dampers are arranged on the bottom surface of the base;

the fan assembly comprises a casing, impellers and heat insulation pieces, the casing is arranged on the top surface of the base, the heat insulation pieces are coated on the outer surface of the casing, blades of the impellers are S-shaped and are uniformly distributed along the circumferential direction, and air channels which are gradually narrowed along the direction from the edge to the center of each impeller are formed between the adjacent blades of the impellers;

drive assembly, drive assembly includes motor, belt drive mechanism, bearing box and transmission shaft, drive assembly installs on the top surface of base, the transmission shaft rotates to be installed in the bearing box, the both ends of transmission shaft all stretch out the bearing box, and one end stretches into the casing and with the impeller links to each other, the other end pass through belt drive mechanism with the motor links to each other.

2. The centrifugal fan as claimed in claim 1, wherein the belt transmission mechanism includes a driving wheel, a driven wheel and a belt, the driving wheel is fixedly sleeved on the output shaft of the motor, the driven wheel is fixedly sleeved on the transmission shaft, and the belt is disposed on the driving wheel and the driven wheel.

3. The centrifugal fan as claimed in claim 2, wherein a belt groove is annularly embedded on each of the driving wheel and the driven wheel.

4. The centrifugal fan of claim 1, wherein the motor is a servo motor.

5. The centrifugal fan as claimed in claim 1, wherein the transmission assembly further comprises a plurality of flywheels, and the flywheels are sleeved on the transmission shaft at equal intervals.

6. The centrifugal fan as claimed in claim 1, wherein the inner surface of the casing and the impeller are coated with a high temperature resistant layer.

7. The centrifugal fan of claim 6, wherein the thickness of the high temperature resistant layer is 25-45 um.

8. The centrifugal fan of claim 1, wherein the insulation is a rock wool layer.

9. The centrifugal fan as claimed in claim 1, wherein the inner wall of the air inlet of the casing is movably mounted with a high temperature resistant filter screen.

10. The centrifugal fan as claimed in claim 1, wherein the air inlet of the casing and the air outlet of the casing are both provided with flanges.