CN213873095U

CN213873095U - Fan speed change mechanism of air conditioning unit and air conditioning unit

Info

Publication number: CN213873095U
Application number: CN202022994709.1U
Authority: CN
Inventors: 尹志明; 李新东; 廖永亮; 史德意; 刘金喜
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-08-03
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a fan speed change mechanism of an air conditioning unit and the air conditioning unit, wherein the fan speed change mechanism comprises a fixed frequency motor, a fan and a speed changer, a driving shaft of the fixed frequency motor is connected with the speed changer through a coupling, and a belt transmission device is arranged between the speed changer and a rotating shaft of the fan; the belt transmission device comprises a first belt pulley, a second belt pulley and a belt; the transmission adopts a stepless transmission; the fan speed change mechanism further comprises a controller and a static pressure detection device. Compared with the prior art, the method and the device have the advantages that the cost is greatly reduced, the time for design and assembly is shortened, and the production efficiency is improved.

Description

Fan speed change mechanism of air conditioning unit and air conditioning unit

Technical Field

The utility model relates to an air conditioning equipment especially relates to an air conditioning unit's fan speed change mechanism and air conditioning unit.

Background

The existing direct shed roof air conditioner needs to have different requirements on the static pressure of a fan section when facing different environments, in order to meet different requirements of users, a plurality of fixed-frequency motors with different powers are often needed to change the rotating speed of the fan so as to meet the requirements on the static pressure of the fan section, and if different motors are installed, a large number of non-standard parts need to be designed, so that the air conditioning unit has great limitation; of course, different wind speed requirements can be realized by adopting the variable frequency motor, but corresponding production cost can be increased, and the mode is not practical. Therefore, how to design a new fan speed change mechanism to change the fan speed with low cost and high efficiency is necessary.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fan speed change mechanism and air conditioning unit of air conditioning unit can solve the technical problem that fan speed change among the air conditioning unit among the prior art is with high costs, production efficiency is poor.

The utility model adopts the technical proposal that: the fan speed change mechanism of the air conditioning unit comprises a fixed-frequency motor, a fan and a speed changer arranged between the fixed-frequency motor and the fan, wherein a driving shaft of the fixed-frequency motor is connected with the speed changer, and a transmission device is arranged between the speed changer and a rotating shaft of the fan.

Further, a driving shaft of the fixed frequency motor is connected with the transmission through a coupling.

Further, the transmission is a belt transmission.

Further, the belt transmission device comprises a first belt pulley arranged on the output shaft of the speed changer, a second belt pulley arranged on the rotating shaft of the fan and a belt sleeved on the first belt pulley and the second belt pulley.

Further, the transmission is a continuously variable transmission.

Further, the fan speed change mechanism further comprises a controller electrically connected with the transmission to adjust the transmission ratio of the transmission.

Furthermore, the fan speed change mechanism further comprises a static pressure detection device which is arranged at the air outlet of the fan and electrically connected with the controller.

An air conditioning unit comprises the fan speed change mechanism.

Further, the air conditioning unit comprises a support, and the fixed-frequency motor, the fan and the transmission are mounted on the support.

Compared with the prior art, the rotating speed of the output shaft of the transmission is changed by adjusting the transmission ratio of the transmission, the function of a variable frequency motor can be achieved by adopting the fixed frequency motor, the change of the output rotating speed can be achieved by equipping one motor, the rotating speed can be adjusted without assembling and replacing multiple motors, the cost is greatly reduced, the time for designing and assembling is shortened, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of the front side of the speed change mechanism of the middle blower fan of the present invention;

fig. 2 is a schematic structural view of the overlooking direction of the speed change mechanism of the middle fan of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The application provides a fan speed change mechanism of setting on air conditioning unit, as shown in fig. 1, 2, fan speed change mechanism mainly includes fixed-frequency motor 1, fan 2 and derailleur 3, and air conditioning unit includes support 4, and fixed-frequency motor 1, fan 2 and derailleur 3 all install on support 4 through screw detachably.

Decide between the drive shaft of motor 1 frequently and the input shaft of derailleur 3 through shaft coupling 5 fixed connection together, and be connected through the transmission between output shaft of derailleur 3 and the fan 2, thereby change the rotational speed of 3 output shafts of derailleur through adjusting the drive ratio of derailleur 3, adopt the function that the motor alright reaches inverter motor frequently surely, and be equipped with the change that can realize output speed with the style motor, and need not to assemble and change many styles motors and adjust the rotational speed, greatly reduced the cost, the time of design and assembly has been reduced, and the production efficiency is promoted.

Wherein, carry out the transmission through belt drive between derailleur 3 in this application and the fan 2, belt drive specifically is including setting up at 3 epaxial first belt pulleys 31 of output of derailleur and setting up at 2 epaxial second belt pulleys 21 of changeing of fan, first belt pulley 31 and second belt pulley 21 set up on same vertical plane, and both overlap on same root belt, through belt transmission output torque, the mode of adjusting the rotational speed of the output shaft of derailleur 3 according to the fan static pressure of actual demand can avoid not reaching the problem of air conditioning unit static pressure demand because of the belt pulley is selected the type to be improper

Preferably, the transmission 3 in the present application adopts a continuously variable transmission, which can well control the magnitude of the output torque thereof, and further can basically realize all requirements of the static pressure of the fan.

Further, the fan speed change mechanism in the present application further includes a controller and a static pressure detection device, and the controller is electrically connected to the static pressure detection device, the static pressure detection device is disposed at an air outlet of the fan 2 to detect the size of the static pressure of the air supply section and feed back the detected value to the controller, the controller has a control program for controlling the transmission ratio of the transmission, the controller calculates the corresponding rotation speeds to be reached by the first belt pulley 31 and the second belt pulley 21 according to the static pressure value of the fan detected by the static pressure detection device, the rotation speed of the fixed frequency motor 1 is constant, the controller adjusts and changes the transmission ratio of the transmission 3 by adjusting the internal gear structure of the transmission 3, further adjusts the rotation speed of the first belt pulley 31, and finally obtains the rotation speed of the second belt pulley 21, that is, the rotation speed of the fan 2 is determined, so that the static pressure supplied by the fan 2 is adjusted to the required size, finally, the fixed-frequency motor meets the technical requirements of different fan static pressures.

And the static pressure detection device can monitor the static pressure in real time and feed back the static pressure to the controller, so that the static pressure of the air supply section of the air conditioning unit can be maintained in a certain numerical range, and the good running performance of the air conditioning unit is ensured.

The application also provides an air conditioning unit, and the air conditioning unit comprises the fan speed change mechanism.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The fan speed change mechanism of the air conditioning unit comprises a fixed-frequency motor and a fan, and is characterized by further comprising a transmission arranged between the fixed-frequency motor and the fan, a driving shaft of the fixed-frequency motor is connected with the transmission, and a transmission device is further arranged between the transmission and a rotating shaft of the fan.

2. The fan speed change mechanism of claim 1, wherein a drive shaft of the fixed frequency motor is coupled to the transmission via a coupling.

3. The fan speed change mechanism of claim 1, wherein the transmission is a belt transmission.

4. The fan speed change mechanism of claim 3, wherein the belt drive comprises a first pulley disposed on the transmission output shaft, a second pulley disposed on the fan shaft, and a belt disposed over the first and second pulleys.

5. The fan speed change mechanism of claim 1, wherein the transmission is a continuously variable transmission.

6. The fan speed change mechanism of claim 5, further comprising a controller electrically connected to the transmission to adjust a gear ratio thereof.

7. The fan speed change mechanism according to claim 6, further comprising a static pressure detection device disposed at the fan air outlet and electrically connected to the controller.

8. An air conditioning assembly, characterized in that it comprises a fan speed change mechanism according to any one of claims 1 to 7.

9. The air conditioning assembly as set forth in claim 8 including a bracket on which the fixed frequency motor, fan and transmission are mounted.