CN-121977252-A - Air conditioner, control method and device thereof, storage medium and computer program product

CN121977252ACN 121977252 ACN121977252 ACN 121977252ACN-121977252-A

Abstract

The invention discloses an air conditioner and a control method, a device, a storage medium and a computer program product thereof, wherein the air conditioner is provided with an external machine main board, a double throttling device and a heat dissipation device, the heat dissipation device is provided with cooling liquid capable of exchanging heat with a refrigerant and an adjusting mechanism capable of adjusting the heat exchange coefficient of the cooling liquid, and the double throttling device comprises a first throttling device and a second throttling device which are positioned at the refrigerant inlet and outlet sides of the heat dissipation device; the method comprises the steps of controlling the opening of a first throttling device to be the preset initial opening of the first throttling device, controlling the opening of a second throttling device to be the preset maximum opening of the second throttling device, and controlling an adjusting mechanism to vertically run in an inner cavity of a heat dissipating device and/or controlling the opening of the first throttling device by combining the outdoor environment temperature and the temperature of an external machine main board. According to the scheme, the heat radiation effect and the operation reliability are improved by controlling the refrigerant flow of the main board heat radiation device of the air conditioner external unit and the heat exchange coefficient of the cooling liquid in a combined mode. The air conditioner belongs to energy-saving refrigeration and air conditioning equipment.

Inventors

YUAN SHENGQI
WANG JINBANG
MI CHAOYANG
CAO WEI
LIU CHENGJIAN
LU XIANDE

Assignees

珠海格力电器股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260320

Claims (12)

1. A control method of an air conditioner is characterized in that the air conditioner is provided with an external machine main board, a heat radiating device and a double throttling device, the heat radiating device is arranged between the double throttling devices and is provided with cooling liquid for exchanging heat with a refrigerant flowing through the double throttling devices and an adjusting mechanism for adjusting the heat exchange coefficient of the cooling liquid, the double throttling device comprises a first throttling device arranged at the refrigerant inlet side of the heat radiating device and a second throttling device arranged at the refrigerant outlet side of the heat radiating device along the refrigerant flow direction in the current mode of the air conditioner, and the control method of the air conditioner comprises the following steps: In the current mode of the air conditioner, controlling the opening of the first throttling device to be the preset initial opening of the first throttling device, and controlling the opening of the second throttling device to be the preset maximum opening of the second throttling device; acquiring the temperature of the main board of the external machine and acquiring the outdoor environment temperature of the air conditioner; And controlling the regulating mechanism to vertically run in the inner cavity of the heat radiating device and/or controlling the opening of the first throttling device according to the temperature of the main board of the external machine and/or the outdoor environment temperature of the air conditioner.
2. The control method of an air conditioner according to claim 1, wherein the adjusting mechanism has a horizontal plate and a vertical plate, the number of the vertical plates is two or more, and two or more of the vertical plates are arranged below the horizontal plate at intervals; in the vertical operation process of the regulating mechanism, more than two vertical plates separate the cooling liquid so as to regulate the heat exchange coefficient of the cooling liquid; the heat dissipation device is characterized by further comprising a refrigerant branch pipe, part of the branch pipe of the refrigerant branch pipe extends into the cooling liquid and is positioned in a spacing area between two adjacent vertical plates in more than two vertical plates, the inlet end of the refrigerant branch pipe is connected with the first throttling device, and the outlet end of the refrigerant branch pipe is connected with the second throttling device.
3. The method for controlling an air conditioner according to claim 1 or 2, wherein, The heat dissipation device is also provided with a driving mechanism, wherein the driving mechanism is used for driving the adjusting mechanism to vertically run; And/or the number of the groups of groups, The heat dissipation device is arranged in a required heat dissipation area of the external machine main board, and a soaking mechanism is arranged between the external machine main board and the heat dissipation device; And/or the number of the groups of groups, And a heat-insulating shell is arranged on the periphery of the heat radiating device.
4. A control method of an air conditioner according to any one of claims 1 to 3, wherein controlling the vertical operation of the adjusting mechanism in the internal cavity of the heat dissipating device and/or controlling the opening degree of the first throttling device according to the temperature of the external main board and/or the outdoor environmental temperature of the air conditioner comprises: determining whether the temperature of the external machine main board is greater than or equal to a first preset temperature; Determining the temperature change rate of the external machine main board if the temperature of the external machine main board is determined to be greater than or equal to a first preset temperature, and controlling the regulating mechanism to vertically run in the internal cavity of the heat radiating device and/or controlling the opening of the first throttling device according to the temperature change rate of the external machine main board; If the temperature of the main board of the external machine is less than the first preset temperature, controlling the regulating mechanism to vertically run in the inner cavity of the heat radiating device and/or controlling the opening of the first throttling device according to the outdoor environment temperature of the air conditioner.
5. The control method of an air conditioner according to claim 4, wherein controlling the vertical operation of the adjusting mechanism in the internal cavity of the heat dissipating device and/or controlling the opening degree of the first throttling device according to the temperature change rate of the external main board comprises: Determining whether the temperature change rate of the external host board is greater than or equal to a first preset rate; And after the setting time, returning to control the regulating mechanism to vertically run in the inner cavity of the heat dissipating device and/or control the opening of the first throttling device according to the temperature of the outer machine main board and/or the outdoor environment temperature of the air conditioner again, wherein the opening of the first throttling device is limited to be reduced to the preset minimum opening of the first throttling device at most.
6. The control method of an air conditioner according to claim 4 or 5, wherein controlling the adjusting mechanism to vertically operate in the internal cavity of the heat dissipating device and/or controlling the opening degree of the first throttle device according to the rate of temperature change of the external main board further comprises: determining whether the temperature change rate of the external machine main board is smaller than a first preset rate or not, and determining whether the temperature change rate of the external machine main board is larger than or equal to a second preset rate or not; if the temperature change rate of the external machine main board is smaller than a first preset rate and the temperature change rate of the external machine main board is larger than or equal to a second preset rate, the regulating mechanism is controlled to vertically run in the inner cavity of the heat dissipating device along the running direction of a preset highest point and to be maintained at the height of a first preset duty ratio in the travel from the preset highest point to the preset lowest point; if the temperature change rate of the external machine main board is smaller than the second preset rate, the adjusting mechanism is controlled to vertically run in the inner cavity of the heat dissipating device along the direction of running to the preset lowest point, and is maintained at the height of the second preset duty ratio in the travel from the preset highest point to the preset lowest point, the second preset duty ratio is larger than the first preset duty ratio, the temperature of the external machine main board and/or the outdoor environment temperature of the air conditioner are returned after the set time, and the adjusting mechanism is controlled to vertically run in the inner cavity of the heat dissipating device and/or the opening degree of the first throttling device is controlled.
7. The control method of an air conditioner according to any one of claims 4 to 6, wherein controlling the vertical operation of the adjusting mechanism in the internal cavity of the heat radiating device and/or controlling the opening degree of the first throttling device according to the outdoor ambient temperature of the air conditioner includes: Determining whether the outdoor environment temperature of the air conditioner is less than a second preset temperature; If the outdoor environment temperature of the air conditioner is determined to be smaller than a second preset temperature, controlling the adjusting mechanism to vertically run in the inner cavity of the heat dissipating device along the running direction towards the preset lowest point, and maintaining the temperature at the height of the preset lowest point; the opening degree of the first throttling device is controlled to be reduced, and the air conditioner returns after the set time so as to control the regulating mechanism to vertically run in the inner cavity of the heat radiating device and/or control the opening degree of the first throttling device again according to the temperature of the main board of the external machine and/or the outdoor environment temperature of the air conditioner; If the outdoor environment temperature of the air conditioner is determined to be greater than or equal to the second preset temperature, the regulating mechanism is controlled to vertically run in the direction of running to the preset lowest point in the inner cavity of the heat dissipating device, the regulating mechanism is maintained at the height of a third preset duty ratio in the stroke from the preset highest point to the preset lowest point, the third preset duty ratio is greater than the second preset duty ratio, the second preset duty ratio is greater than the first preset duty ratio, the regulating mechanism is returned after the setting time, and the regulating mechanism is controlled to vertically run in the inner cavity of the heat dissipating device and/or the opening degree of the first throttling device is controlled again according to the temperature of the main board of the external machine and/or the outdoor environment temperature of the air conditioner.
8. The control method of an air conditioner according to any one of claims 1 to 7, characterized by further comprising: And controlling the opening of the second throttling device to realize refrigerant throttling control in the current mode of the air conditioner.
9. A control device of an air conditioner for realizing air conditioner control using the control method of an air conditioner according to any one of claims 1 to 8, characterized by comprising: A control unit configured to control an opening degree of the first throttling device to be a preset initial opening degree of the first throttling device and to control an opening degree of the second throttling device to be a preset maximum opening degree of the second throttling device in a current mode of the air conditioner; an acquisition unit configured to acquire a temperature of the external unit main board and an outdoor environment temperature of the air conditioner; The control unit is further configured to control the adjusting mechanism to vertically operate in the inner cavity of the heat radiating device and/or control the opening of the first throttling device according to the temperature of the main board of the external machine and/or the outdoor environment temperature of the air conditioner.
10. An air conditioner according to claim 9, comprising a control device for the air conditioner.
11. A storage medium comprising a stored program, wherein the program, when run, controls a device in which the storage medium is located to perform the control method of the air conditioner of any one of claims 1 to 8.
12. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, realizes the steps of the control method of an air conditioner according to any one of claims 1 to 8.

Description

Air conditioner, control method and device thereof, storage medium and computer program product Technical Field The invention belongs to the technical field of air conditioners, and particularly relates to a control method and device of an air conditioner, the air conditioner, a storage medium and a computer program product, in particular to an air conditioner main board radiator structure and an operation control method and device thereof, the air conditioner, the storage medium and the computer program product. The air conditioner belongs to energy-saving refrigeration and air conditioning equipment. Background An outer machine main board and a radiator are arranged in the outer machine electric box of the air conditioner, the outer machine main board (comprising an electric control module and the like) is positioned on one side of the accommodating cavity in the electric box, and the main board radiator (such as an aluminum sheet radiator) is positioned on the other side of the accommodating cavity in the electric box. All control functions of the air conditioner are integrated on one board to form an external machine main board, and the electric control module is a part of the external machine main board. In the design of a radiator (i.e., a main board radiator) of an external unit main board of an air conditioner, if the temperature of a refrigerant flowing through the main board radiator is too low when the refrigerant flows through the main board radiator, condensation is easily generated on the surface of an electric control module in the main board, the electric control module is damaged (such as corrosion, short circuit or failure of components of a circuit board of the electric control module is caused), and the reliability of a system (i.e., a control system where the air conditioner is located) is seriously reduced. The air conditioner belongs to energy-saving refrigeration and air conditioning equipment. The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art. Disclosure of Invention The invention aims to provide a control method and device for an air conditioner, the air conditioner, a storage medium and a computer program product, so as to solve the problems that if the temperature of a refrigerant flowing through a main board radiator is too low, condensation is easily generated on the surface of an electric control module in the main board, the electric control module is damaged, and the reliability of a system is seriously reduced, and the effects of avoiding the damage caused by the condensation of the main board and improving the heat dissipation effect and the operation reliability are achieved by controlling the refrigerant flow of the main board radiator of the air conditioner and the fluid heat exchange coefficient of cooling liquid in a combined way under the condition of ensuring the heat dissipation requirement of the main board. The air conditioner belongs to energy-saving refrigeration and air conditioning equipment. The invention provides a control method of an air conditioner, which comprises an outer machine main board, a heat radiating device and a double throttling device, wherein the heat radiating device is positioned between the double throttling devices and is provided with cooling liquid for exchanging heat with a refrigerant flowing through the double throttling devices and an adjusting mechanism for adjusting the heat exchange coefficient of the cooling liquid, the double throttling device comprises a first throttling device positioned at the refrigerant inlet side of the heat radiating device and a second throttling device positioned at the refrigerant outlet side of the heat radiating device along the refrigerant flow direction of the air conditioner in the current mode, the control method of the air conditioner comprises the steps of controlling the opening of the first throttling device to be the preset initial opening of the first throttling device, controlling the opening of the second throttling device to be the preset maximum opening of the second throttling device, acquiring the temperature of the outer machine main board, acquiring the outdoor environment temperature of the air conditioner, and controlling the adjusting mechanism to operate in the inner cavity of the heat radiating device and/or the vertical opening of the air conditioner according to the temperature of the outer machine main board and/or the outdoor environment temperature. In some embodiments, the adjusting mechanism is provided with horizontal plates and vertical plates, the number of the vertical plates is more than two, the more than two vertical plates are arranged below the horizontal plates at intervals, the cooling liquid is separated by the more than two vertical plates in the process of vertical operation of the adjusting mechan