CN-122015273-A - Air conditioner external fan control method and device and air conditioner equipment

CN122015273ACN 122015273 ACN122015273 ACN 122015273ACN-122015273-A

Abstract

The embodiment of the invention provides a control method and device for an air conditioner external fan and air conditioning equipment, and relates to the technical field of air conditioners; the first working mode is a working mode that a compressor of the air conditioner operates at a frequency greater than a first frequency threshold, the first frequency threshold is the maximum frequency of operation of the compressor in other working modes except the first working mode, the rotating speed of an outer fan of the air conditioner is adjusted to be a first rotating speed under the condition that the condition of entering the first working mode is met, and when the time length of the operation of the outer fan at the first rotating speed is greater than a preset time length threshold or the exhaust pressure of the compressor of the air conditioner is smaller than a preset pressure threshold, the rotating speed of the outer fan is adjusted according to the exhaust pressure. The technical scheme provided by the embodiment of the invention can be beneficial to improving the heat radiation capacity of the air conditioner condenser.

Inventors

SONG BIN
ZHOU SHUFENG
WANG MEI
DUAN LIANG
SHAN LIANYU
ZHANG YINGBO

Assignees

小米科技(武汉)有限公司

Dates

Publication Date: 20260512
Application Date: 20260409

Claims (10)

1. An air conditioner external fan control method is characterized by comprising the following steps: Determining whether a condition for entering a first working mode is met, wherein the first working mode is a working mode that a compressor of an air conditioner operates at a frequency greater than a first frequency threshold, and the first frequency threshold is the maximum frequency of operation of the compressor in other working modes except the first working mode; under the condition that the condition of entering the first working mode is met, the rotating speed of the external fan of the air conditioner is regulated to a first rotating speed, wherein the first rotating speed is larger than a preset rotating speed, and the preset rotating speed is the maximum rotating speed of the external fan in other working modes except the first working mode; and when the running time of the outer fan at the first rotating speed is greater than a preset time threshold or the exhaust pressure of the compressor is smaller than a preset pressure threshold, adjusting the rotating speed of the outer fan according to the exhaust pressure.
2. The method of claim 1, wherein the determining whether the condition for entering the first mode of operation is satisfied comprises: collecting first data, wherein the first data comprises at least one of user operation data, air conditioner operation data and environmental temperature data; and determining whether a condition for entering the first working mode is met according to the first data.
3. The method of claim 2, wherein the air conditioning operating data comprises an operating frequency of the compressor; the determining whether the condition for entering the first working mode is met according to the first data comprises the following steps: Determining that a condition for entering the first operation mode is satisfied when the first data satisfies at least one of: the user operation data comprises starting operation information of the first working mode; the target frequency of the compressor is larger than the current operating frequency, and the difference value between the target frequency and the current operating frequency is larger than a preset threshold value; the variation of the detected ambient temperature within the preset time period is greater than a preset variation threshold; The detected ambient temperature is greater than a preset temperature threshold.
4. A method according to any one of claims 1 to 3, wherein said adjusting the rotational speed of the external fan in accordance with the exhaust pressure comprises: calculating a deviation value of the exhaust pressure and a preset target pressure threshold value; And according to the deviation value, adjusting the rotating speed of the external fan by utilizing a proportional-integral-derivative (PID) algorithm.
5. The method according to claim 4, wherein the method further comprises: and selecting PID parameters of the PID algorithm according to the frequency range of the operation frequency of the compressor, wherein different frequency ranges correspond to different PID parameters.
6. The method according to claim 4, wherein the method further comprises: detecting the exhaust pressure of the compressor through a preset pressure sensor; Or acquiring the temperature of an outlet pipeline of a condenser of the air conditioner, and determining the exhaust pressure of the compressor according to the temperature of the outlet pipeline.
7. An air conditioner external fan control device, characterized by comprising: The system comprises a determining module, a judging module and a control module, wherein the determining module is used for determining whether a condition for entering a first working mode is met, the first working mode is a working mode that a compressor of an air conditioner operates at a frequency larger than a first frequency threshold, and the first frequency threshold is the maximum frequency of the operation of the compressor in other working modes except the first working mode; The control module is used for adjusting the rotating speed of the external fan of the air conditioner to a first rotating speed under the condition that the condition of entering the first working mode is met, wherein the first rotating speed is larger than a preset rotating speed, the preset rotating speed is the maximum rotating speed of the external fan in other working modes except the first working mode, and when the duration of the operation of the external fan at the first rotating speed is larger than a preset duration threshold value or the exhaust pressure of the compressor is smaller than a preset pressure threshold value, the rotating speed of the external fan is adjusted according to the exhaust pressure.
8. An air conditioning apparatus comprising a memory and a processor; The memory stores computer-executable instructions; the processor executes computer-executable instructions stored in the memory, causing the processor to perform the air conditioner external fan control method according to any one of claims 1 to 6.
9. A computer readable storage medium, wherein computer executable instructions are stored in the computer readable storage medium, the computer executable instructions when executed by a processor are for implementing the air conditioner outdoor fan control method according to any one of claims 1-6.
10. A computer program product comprising a computer program which, when executed by a processor, implements the method of controlling an air conditioner external fan as claimed in any one of claims 1 to 6.

Description

Air conditioner external fan control method and device and air conditioner equipment Technical Field The present invention relates to the field of air conditioning technologies, and in particular, to a method and an apparatus for controlling an external fan of an air conditioner, and an air conditioning device. Background As a core tool for adjusting temperature, the performance of an air conditioner directly affects the comfort experience of a user, and especially in a high-temperature season or a closed space, the refrigerating capacity requirement of the user on the air conditioner is urgent. In the related art, the rotational speed adjustment of the air conditioner external fan is generally adjusted based on the current operation mode or environmental parameters (e.g., indoor/outdoor temperature). As in the conventional mode, the external fan is operated at the lowest rotational speed to save energy consumption, and the rotational speed is gradually increased only when an increase in the condenser heat dissipation demand is detected. However, when the air conditioner needs to raise the frequency of the compressor and increase the cold output in a short time, the adjustment of the rotation speed of the external fan is often delayed from the change of the system load, so that the heat dissipation capacity of the condenser is insufficient, and the problems of overload of the compressor, overhigh exhaust temperature and the like are caused. Disclosure of Invention The embodiment of the invention provides an air conditioner external fan control method and device and air conditioner equipment, which can be used for improving the heat radiation capacity of an air conditioner condenser. In a first aspect, the present invention provides a method for controlling an external fan of an air conditioner, the method comprising: determining whether a condition for entering a first working mode is met, wherein the first working mode is a working mode that a compressor of an air conditioner operates at a frequency greater than a first frequency threshold, and the first frequency threshold is the maximum frequency of operation of the compressor in other working modes except the first working mode; Under the condition that the condition of entering the first working mode is met, the rotating speed of the external fan of the air conditioner is regulated to a first rotating speed, wherein the first rotating speed is larger than a preset rotating speed, and the preset rotating speed is the maximum rotating speed of the operation of the external fan in other working modes except the first working mode; And when the time length of the outer fan running at the first rotation speed is greater than a preset time length threshold value or the exhaust pressure of the compressor is smaller than a preset pressure threshold value, adjusting the rotation speed of the outer fan according to the exhaust pressure. In one possible embodiment, the determining whether the condition for entering the first operation mode is satisfied includes: collecting first data, wherein the first data comprises at least one of user operation data, air conditioner operation data and environmental temperature data; and determining whether a condition for entering the first working mode is met according to the first data. In one possible embodiment, the air conditioner operation data includes an operation frequency of the compressor; the determining, according to the first data, whether the condition for entering the first operation mode is satisfied includes: determining that a condition for entering the first mode of operation is satisfied when the first data satisfies at least one of: The user operation data comprises starting operation information of the first working mode; The target frequency of the compressor is larger than the current operating frequency, and the difference value between the target frequency and the current operating frequency is larger than a preset threshold value; the variation of the detected ambient temperature within the preset time period is greater than a preset variation threshold; The detected ambient temperature is greater than a preset temperature threshold. In one possible embodiment, the adjusting the rotation speed of the external fan according to the exhaust pressure includes: calculating a deviation value of the exhaust pressure and a preset target pressure threshold value; And according to the deviation value, adjusting the rotating speed of the external fan by using a Proportional-Integral-Derivative (PID) algorithm. In one possible embodiment, the method further comprises: And selecting PID parameters of a PID algorithm according to a frequency range to which the operating frequency of the compressor belongs, wherein different frequency ranges correspond to different PID parameters. In one possible embodiment, the method further comprises: Detecting the exhaust pressure of the compressor through a preset pressure se