CN210532627U

CN210532627U - Universal variable frequency air conditioner control panel

Info

Publication number: CN210532627U
Application number: CN201921057750.7U
Authority: CN
Inventors: 薛志群; 薛震华
Original assignee: Qunda Technology Jiangsu Co ltd
Current assignee: Qunda Technology Jiangsu Co ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-05-15
Anticipated expiration: 2029-07-08

Abstract

A universal variable frequency air conditioner control panel comprises a main control chip unit, a power supply processing unit and a driving unit; the main control chip unit is provided with a microcontroller; the method is characterized in that: the air conditioner control panel is provided with a PG fan interface and a BLDC fan interface; the PG fan interface is connected with a PG fan control output port of the main control chip unit microcontroller through a first photoelectric isolation circuit, and the BLDC fan interface is also connected with a BLDC fan control output port of the main control chip unit microcontroller through a second photoelectric isolation circuit. Compared with the prior art, the maintenance time is saved, extra too much cost is not added, two control panels of different types do not need to be purchased, and the maintenance time and the maintenance cost are both considered.

Description

Universal variable frequency air conditioner control panel

Technical Field

The utility model belongs to the intelligent control circuit field especially relates to general type air conditioner control panel of machine in the air conditioner.

Background

In recent years, the air-conditioning market is more and more mainly based on the variable frequency air conditioner, and the fans adopted by the indoor unit of the variable frequency air conditioner are mostly divided into two types: one type is an alternating current PG motor, a Hall element is arranged in the PG motor, after the motor rotates, the Hall element can generate 1 or more pulses per circle, so that a chip of a control board can indirectly measure and calculate the current rotating speed of the motor by detecting the number of feedback pulses generated by the motor, and then the aim of speed regulation can be fulfilled by adjusting the voltage output of the motor; the second type is a direct current brushless motor (BLDC), which is widely used in recent years, and has many advantages such as low power consumption, low noise, long service life, and so on, so that the BLDC has advantages over the earlier motors, especially in dc variable frequency air conditioners, most air conditioner manufacturers in the recently introduced new models have selected BLDC, and the market share is continuously increased.

Among the prior art, need use different control circuit board to the type (PG motor or BLDC motor) of motor, when maintaining the air conditioner, maintenance personal need go to and open the interior machine that damages the air conditioner and just can distinguish which kind of motor that adopts to decide which kind of control circuit changes. Because when not opening the interior machine that damages the air conditioner, the maintenance personal is unclear the motor that the fan adopted, in order to save time, so maintenance personal need carry two kinds of different grade type control circuit simultaneously and go to the maintenance, so maintenance personal just need purchase two kinds of type control circuit so that replace at any time. Therefore, in the above case, the maintenance personnel cannot take care of both the maintenance time and the maintenance cost.

Therefore, how to solve the above-mentioned deficiencies of the prior art is a main research subject of the present invention.

Disclosure of Invention

The utility model aims at providing a general type variable frequency air conditioner control panel to realize generally to PG motor and BLDC motor.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a universal variable frequency air conditioner control panel comprises a main control chip unit, a power supply processing unit and a driving unit; the main control chip unit is provided with a microcontroller; the air conditioner control panel is provided with a PG fan interface and a BLDC fan interface; the PG fan interface is connected with a PG fan control output port of the main control chip unit microcontroller through a first photoelectric isolation circuit, and the BLDC fan interface is connected with a BLDC fan control output port of the main control chip unit microcontroller through a second photoelectric isolation circuit.

The above technical solution is changed and explained as follows:

1. in the above scheme, the BLDC fan interface includes two interfaces of different specifications.

2. In the scheme, the microcontroller is a single chip microcomputer with the model number of G80F 960A.

Further, a pin 8 of the single chip microcomputer serves as a PG fan control output port, and a pin 20 of the single chip microcomputer serves as a BLDC fan control output port.

Still further, the first photoelectric isolation circuit comprises a MOC3021 photoelectric coupler and a first controlled silicon.

The utility model discloses has following effect:

because the utility model discloses with indoor fan PG motor control and indoor fan BLDC motor control integration on a control circuit board on prior art's basis, realize the selective drive of fan PG motor and BLDC motor, maintenance personal need not to go to the interior machine of the air conditioner of inspection damage to need not to purchase two kinds of control panels simultaneously and go to the maintenance, only need adopt this control panel just can be with because the air conditioner of air conditioner indoor control panel damage restores fast. Compared with the prior art, the utility model discloses need not to increase extra too many costs, compromise maintenance duration and cost of maintenance to make things convenient for the maintenance of air conditioner in the very big degree.

Drawings

Fig. 1 is an external view of a control panel according to an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of a main control chip unit according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a first optoelectronic isolation circuit according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a second optoelectronic isolation circuit according to an embodiment of the present invention.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): referring to FIGS. 1-4:

a universal variable frequency air conditioner control panel comprises a main control chip unit, a power supply processing unit and a driving unit.

Referring to fig. 1, the control board is provided with a PG FAN interface FAN-PG1, a BLDC FAN interface P2 or/and P3, a display screen interface, a sensor interface, and the like. The PG fan interface is connected with a PG fan control output port of the main control chip unit microcontroller through a first photoelectric isolation circuit, and the BLDC fan interface is also connected with a BLDC fan control output port of the main control chip unit microcontroller through a second photoelectric isolation circuit. Specifically, the BLDC fan interface includes two interfaces of different specifications to be suitable for the BLDC motor of two different interfaces.

Referring to fig. 2, the main control chip unit has a microcontroller, and may specifically adopt a single chip microcomputer with a model G80F960A, a pin 8 of which is used as a PG fan control output port, a pin 20 of which is used as a BLDC fan control output port,

pins

25, 26, and 27 of which are connected to a display screen interface for connecting a display screen and keys, and

pins

30 and 31 of which are used for connecting a room temperature sensor and a pipe temperature sensor of an air conditioner;

pins

4, 5, 6 and 7 are used for outputting and connecting a chip ULN2003A to connect a swing wind motor; the

pins

11, 14, 15 are connected to the driving unit. The driving unit comprises a driving chip ULN2001A,

pins

11, 14 and 15 are connected with the input of the driving chip ULN2001A, and the output of the driving chip ULN2001A is respectively connected with three relays so as to finally control the compressor, the outdoor fan and the reversing valve through the relays.

Referring to fig. 3, the first photoelectric isolation circuit includes a MOC3021 photocoupler and a first thyristor U5, and an input FAN _ PG of the first photoelectric isolation circuit is directly connected to a pin 8 of a single chip G80F 960A.

Referring to fig. 4, the second photoelectric isolation circuit includes two paths, one path is a control output PWM, the other path is a feedback path FG, each path has a photocoupler PC817, so that the control output PWM is connected to the pin 20 of the monolithic G80F960A, and the pin 18 of the feedback path FG monolithic G80F960A is used for returning the feedback signal of the BLDC motor.

The program part of the single chip microcomputer G80F960A comprises a part for controlling the fan PG motor and a part for controlling the fan BLDC motor, and the control of the fan PG motor and the output of the fan BLDC motor are provided at the same time.

This embodiment is integrated on a control circuit board with indoor fan PG motor control and indoor fan BLDC motor control, realizes the selective drive of fan PG motor and BLDC motor, and the maintenance personal need not to go to the interior machine of the air conditioner of inspection damage to need not to purchase two kinds of control panels simultaneously and go to the maintenance, only need adopt this control panel just can be with because the air conditioner of the indoor control panel damage of air conditioner restores fast.

The power processing unit in the above embodiments, which is not illustrated in detail, may employ various power circuits in the prior art, and thus, will not be described in detail.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A universal variable frequency air conditioner control panel comprises a main control chip unit, a power supply processing unit and a driving unit; the main control chip unit is provided with a microcontroller; the method is characterized in that: the air conditioner control panel is provided with a PG fan interface and a BLDC fan interface; the PG fan interface is connected with a PG fan control output port of the main control chip unit microcontroller through a first photoelectric isolation circuit, and the BLDC fan interface is also connected with a BLDC fan control output port of the main control chip unit microcontroller through a second photoelectric isolation circuit.

2. The universal variable frequency air conditioner control panel according to claim 1, wherein: the BLDC fan interface comprises two interfaces with different specifications.

3. The universal variable frequency air conditioner control panel according to claim 1, wherein: the microcontroller is a single chip microcomputer with the model G80F 960A.

4. The control panel of the universal inverter air conditioner according to claim 3, wherein: and a pin 8 of the single chip microcomputer is used as a PG fan control output port, and a pin 20 of the single chip microcomputer is used as a BLDC fan control output port.

5. The control panel of the general inverter air conditioner according to claim 1 or 3, wherein: the first photoelectric isolation circuit comprises a photoelectric coupler with the model number of MOC3021 and a first controlled silicon (U5).