WO2018090775A1

WO2018090775A1 - Air conditioner control method and device and air conditioner

Info

Publication number: WO2018090775A1
Application number: PCT/CN2017/106544
Authority: WO
Inventors: 罗永前; 吴俊鸿; 廖敏; 彭光前; 田翔; 李大伟; 连彩云
Original assignee: 珠海格力电器股份有限公司
Priority date: 2016-11-18
Filing date: 2017-10-17
Publication date: 2018-05-24
Also published as: CN106524415A; CN106524415B

Abstract

Disclosed are air conditioner control method and device and an air conditioner. The method includes: receiving a compressor shut-down signal sent by a user in a compressor operation mode (101); and in response to the compressor shut-down signal received in the compressor operation mode, controlling to gradually reduce the frequency of the compressor (102). The method can slowly reduce the condensing pressure, so that the pressure difference between the front and the rear of the whole electronic expansion valve changes slowly, thereby reducing the noise of the whole machine during the mode switch.

Description

Air conditioning control method, device and air conditioner

Related application

The present application claims the priority of the Chinese Patent Application No. 201611024164.3, entitled "Air Conditioning Control Method, Apparatus, and Air Conditioning", which is incorporated herein by reference in its entirety.

Technical field

The invention relates to the field of air conditioning control, and in particular to an air conditioning control method and device and an air conditioner.

Background technique

When the air conditioner receives the remote control signal during the mode conversion, the whole machine actuator will operate. For example, when the cooling operation is accepted to the stop model, the internal fan will be powered off first, the compressor will be powered off, and the external fan will be activated after 5S. When the power is cut off, the compressor suddenly stops from high-frequency operation, causing an instantaneous change in pressure, which causes obvious airflow noise in the internal opportunity and affects the quality of the air conditioner.

Summary of the invention

In view of the above technical problems, the present invention provides an air conditioner control method, apparatus, and air conditioner, which can reduce overall machine noise during mode switching.

According to an aspect of the invention, an air conditioning control method is provided, comprising:

Receiving a compressor stop signal sent by a user in a compressor operating mode;

The compressor frequency is gradually reduced in response to receiving the compressor shutdown signal in the compressor operating mode.

In one embodiment of the invention, in response to receiving the compressor shutdown signal in a compressor operating mode, the method further includes:

Control the internal fan speed to gradually decrease;

and / or,

Control the external fan to directly perform the windshield operation;

and / or,

The electronic expansion valve is controlled to maintain a constant opening; and when the compressor frequency drops to zero, the electronic expansion valve is controlled to maximize the opening.

In an embodiment of the invention, the step of reducing the control compressor frequency comprises:

Controlling the compressor to maintain the original frequency after the first time interval, the compressor frequency is gradually reduced;

Control the compressor to run down after the second time interval.

In an embodiment of the invention, the step of reducing the rotational speed of the controlled inner fan comprises:

After controlling the inner fan to maintain the original speed for the first time interval, the internal fan speed is gradually reduced;

Controlling the internal fan to gradually reduce the speed after running for a second time interval, and operating at a low windshield, wherein the low windshield speed is lower than the speed of the inner fan after the second time interval of the frequency reduction operation;

Control the internal fan to shut down after running for a third time interval with low windshield.

In an embodiment of the invention, the first time interval is 1 s - 2 s; the second time interval is 3 s - 15 s; and the third time interval is 13 s - 27 s.

According to another aspect of the present invention, an air conditioning control apparatus includes a shutdown signal receiving module and a compressor control module, wherein:

a stop signal receiving module, configured to receive a compressor stop signal sent by a user in a compressor operating mode;

And a compressor control module, configured to control the compressor frequency to gradually decrease in response to the shutdown signal receiving module receiving the compressor shutdown signal.

In an embodiment of the invention, the apparatus further includes at least one of an inner fan control module, an outer fan control module, and an expansion valve control module, wherein:

An internal fan control module, configured to receive the compressor stop signal in response to the stop signal receiving module, and control the internal fan speed to gradually decrease;

The external fan control module is configured to receive the compressor stop signal in response to the stop signal receiving module, and control the external fan to directly perform the windshield operation;

An expansion valve control module for controlling the electronic expansion valve to maintain a fixed opening degree in response to the shutdown signal receiving module receiving the compressor shutdown signal; and controlling the electronic expansion valve when the compressor frequency is zero The opening is adjusted to the maximum.

In an embodiment of the invention, the compressor control module is configured to gradually reduce the compressor frequency after the first time interval of the compressor is maintained in response to the shutdown signal receiving module receiving the compressor shutdown signal. And control the compressor to shut down after the second time interval of the down-conversion operation.

In an embodiment of the present invention, the internal fan control module is configured to gradually reduce the internal fan speed after the first time interval of the internal fan is maintained in response to the stop signal receiving module receiving the compressor stop signal. Controlling the internal fan to gradually reduce the speed after running for a second time interval, running in a low windshield, wherein the low windshield speed is lower than the speed of the inner fan after the second time interval of the down frequency operation; and controlling the inner fan to operate in the low windshield Shut down after three time intervals.

According to another aspect of the present invention, an air conditioning control apparatus includes a memory and a processor, wherein:

a memory for storing instructions;

a processor for executing the instructions such that the apparatus performs an operation of implementing an air conditioning control device method as described in any of the above embodiments.

According to another aspect of the present invention, an air conditioner including a compressor, an internal fan, an external fan, an electronic expansion valve, and an air conditioning control device according to any of the above embodiments is provided.

The invention slowly reduces the compressor frequency by receiving the compressor stop signal sent by the user in the compressor operating mode, so that the condensing pressure is slowly decreased, thereby causing the pressure difference between the entire electronic expansion valve to change slowly, thereby Reduces the overall machine noise during mode switching.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic view of a first embodiment of an air conditioning control method of the present invention.

2 is a schematic view of a second embodiment of an air conditioning control method according to the present invention.

Figure 3 is a schematic illustration of control of an actuator in one embodiment of the invention.

4 is a timing diagram of control of controlling an actuator in an embodiment of the present invention.

Fig. 5 is a schematic view showing the first embodiment of the air conditioning control device of the present invention.

Figure 6 is a schematic view showing a second embodiment of the air conditioning control device of the present invention.

Fig. 7 is a schematic view showing a third embodiment of the air conditioning control device of the present invention.

Figure 8 is a schematic view of an embodiment of an air conditioner of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. The following description of the at least one exemplary embodiment is merely illustrative and is in no way All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in the embodiments are not intended to limit the scope of the invention.

In the meantime, it should be understood that the dimensions of the various parts shown in the drawings are not drawn in the actual scale relationship for the convenience of the description.

Techniques, methods and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and apparatus should be considered as part of the authorization specification.

In all of the examples shown and discussed herein, any specific values are to be construed as illustrative only and not as a limitation. Accordingly, other examples of the exemplary embodiments may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following figures, and therefore, once an item is defined in one figure, it is not required to be further discussed in the subsequent figures.

1 is a schematic view of a first embodiment of an air conditioning control method of the present invention. Preferably, the embodiment can be performed by the air conditioning control device of the present invention. The method includes the following steps:

Step 101: Receive a compressor shutdown signal sent by a user in a compressor operation mode, where the compressor operation mode includes a mode of operation of an air conditioner compressor, such as a normal heating operation mode, an air conditioning refrigeration or a heating operation mode, The compressor shutdown signal includes a user shutdown signal, a signal that the user switches to the defrost mode, a signal that the user switches to the air supply mode, and the like, and the user instructs the compressor to stop.

In an embodiment of the present invention, the receiving the compressor stop signal sent by the user in the compressor operating mode may include: the air conditioner receives the user shutdown signal in the high frequency operation mode, and switches from the high frequency operation mode to the shutdown mode. In the case of the operation mode; the air conditioner receives the signal that the user switches to the defrost mode in the normal heating operation mode, switches from the normal heating operation mode to the defrost operation mode; the air conditioner receives the user switching in the cooling or heating operation mode. The signal to the air supply mode, the switching from the cooling or heating operation mode to the supply air operation mode; and all other cases of switching from the compressor operation mode to the compressor shutdown mode.

Step 102: In the case where the compressor stop signal is received in the compressor operating mode and the mode switching is to be switched to the compressor shutdown mode, the control compressor frequency is gradually reduced slowly.

According to the air conditioning control method provided by the above embodiment of the present invention, in the case of receiving the compressor stop signal sent by the user in the compressor operating mode, the compressor frequency is slowly reduced, and the compressor is slowly down-converted to make the electronic The differential pressure before and after the expansion valve becomes smaller during the frequency reduction process, thereby reducing the refrigerant airflow noise, thereby reducing the overall machine noise during mode switching.

In an embodiment of the present invention, in response to receiving the compressor shutdown signal in the compressor operating mode, the method may further include:

Control the internal fan speed slowly and gradually.

and / or,

Control the external fan to directly perform the windshield operation.

and / or,

The air conditioning control method provided by the above embodiment of the present invention controls the wind blower operation of the outer fan to increase the evaporation pressure in the case of receiving the compressor stop signal sent by the user in the compressor operation mode, and controls the internal fan speed to be slow with the compressor frequency. The lowering is performed to lower the condensing pressure, thereby causing the pressure difference before and after the entire electronic expansion valve to change more slowly, thereby further reducing the overall machine noise during mode switching.

2 is a schematic view of a second embodiment of an air conditioning control method according to the present invention. Preferably, the embodiment can be performed by the air conditioning control device of the present invention. The method includes the following steps:

Step 1. Receive a compressor shutdown signal sent by the user in the compressor operating mode.

Step 2: When the compressor stop signal is received in the compressor operating mode, and the mode switching is to be switched to the compressor shutdown mode, the actuators such as the inner fan, the outer fan, the compressor, and the electronic expansion valve are controlled to execute. The corresponding operation.

Figure 3 is a schematic illustration of control of an actuator in one embodiment of the invention. 4 is a timing diagram of control of controlling an actuator in an embodiment of the present invention. As shown in FIG. 3 and FIG. 4, step 2 of the embodiment of FIG. 2 may include:

In step 21, the external fan is controlled to directly perform the windshield operation.

In step 22, the compressor frequency is controlled to gradually decrease gradually.

In an embodiment of the present invention, as shown in FIG. 4, step 22 may include:

Step 221, after controlling the compressor to maintain the original frequency for the first time interval T1, the compressor frequency is gradually decreased gradually.

In step 222, after the second time interval (T2-T1) of the compressor down-conversion operation is controlled, that is, when the compressor is down-converted to the time T2, the system is shut down.

In an embodiment of the invention, the step of controlling the compressor frequency to gradually decrease slowly during the second time interval (T2-T1) may include: after receiving the remote shutdown signal for the first time interval T1, the compressor is stepwise Down frequency is run to T2.

In step 23, the internal fan speed is controlled to gradually decrease gradually.

In an embodiment of the present invention, as shown in FIG. 4, step 23 may include:

In step 231, after the inner fan is controlled to maintain the original speed for the first time interval T1, the inner fan speed is gradually decreased gradually.

Step 232, after controlling the inner fan to gradually reduce the speed operation for the second time interval (T2-T1), that is, when the inner fan is controlled to gradually decrease the speed and run to the time T2, the operation is performed at a low windshield, wherein the low windshield speed is lower than the inner fan. The frequency is reduced to the speed of T2.

After the compressor and the internal fan maintain the first time interval operation, the effect of controlling the compressor frequency and the internal fan speed to decrease slowly is that the internal fan speed and the compressor frequency are simultaneously decreased slowly to reduce the condensing pressure, so that the entire electronic expansion valve The pressure difference between the front and the back changes slowly. Therefore, the technical problem that the temperature of the internal machine changes rapidly when the wind speed is rapidly reduced, and the pressure difference between the electronic expansion valve and the large differential pressure is obvious is solved.

In an embodiment of the invention, the internal fan speed is gradually reduced slowly during the second time interval (T2-T1). The step may include: after receiving the first time interval T1 of the remote shutdown signal, the inner fan gradually reduces the windshield operation to the time T2.

Step 233, after controlling the inner fan to run in the low windshield for the third time interval (T3-T2), that is, when the inner fan is controlled to run at the low windshield to the time T3, the machine is turned off.

The inner fan operates in the low windshield for the third time interval to dry the inner machine and blow off the residual heat, so that the internal temperature of the internal machine is reduced to normal temperature during heating, so as to fully utilize the heat. At this time, the pressure is basically balanced only by the internal evaporator temperature. high.

In step 24, the electronic expansion valve is controlled to maintain a constant opening degree; and in the case where the compressor frequency drops to zero, the electronic expansion valve is controlled to adjust the opening degree to the maximum.

The above embodiment of the present invention controls the compressor to slowly reduce the frequency, and the internal fan slowly reduces the rotational speed, so that the pressure does not change too fast, the electronic expansion valve remains unchanged, and the electronic expansion is performed after the compressor is powered off and the fan is powered off. Valve reset.

In the above embodiment of the invention, the first time interval, the second time interval, and the third time interval are empirical values determined by the applicant based on compressor characteristics.

In an embodiment of the present invention, the first time interval may be 1 s - 2 s; the second time interval may be 3 s - 15 s; and the third time interval may be 13 s - 27 s.

According to the air conditioning control method of the above embodiment of the present invention, by receiving the compressor stop signal sent by the user in the compressor operation mode, the fan, the compressor and the electronic expansion valve are controlled in linkage mode at the mode switching time to reduce the noise transmission. the goal of.

Specifically, the above embodiment of the present invention controls the direct blower operation of the external fan to increase the evaporation pressure; and controls the compressor and the internal fan to maintain the T1 time after the compressor frequency and the internal fan speed decrease slowly, the internal fan speed and the compressor frequency At the same time, it is slowly reduced to reduce the condensing pressure, so that the pressure difference between the whole electronic expansion valve changes slowly. The compressor is closed when it runs to T2, and the internal fan is closed when it runs to T3, where the internal fan is at T2~T3. The purpose of the operation is to blow the inner machine; thus, the pressure difference between the front and the back of the electronic expansion valve is changed more slowly, thereby further reducing the overall machine noise during mode switching.

Fig. 5 is a schematic view showing the first embodiment of the air conditioning control device of the present invention. As shown in FIG. 5, the air conditioning control device includes a shutdown signal receiving module 51 and a compressor control module 52, wherein:

The shutdown signal receiving module 51 is configured to receive a compressor shutdown signal sent by the user in the compressor operating mode.

The compressor control module 52 is configured to control the compressor frequency to gradually decrease in response to the shutdown signal receiving module 51 receiving the compressor shutdown signal.

According to the air conditioning control device provided by the above embodiment of the present invention, when the compressor stop signal sent by the user is received in the compressor operation mode, the compressor frequency is slowly decreased, and the compressor is slowly down-converted to make the electronic The differential pressure before and after the expansion valve becomes smaller during the frequency reduction process, thereby reducing the refrigerant airflow noise, thereby reducing the overall machine during mode switching. noise.

Figure 6 is a schematic view showing a second embodiment of the air conditioning control device of the present invention. Compared with the embodiment shown in FIG. 5, in the embodiment shown in FIG. 6, the apparatus may further include at least one of an inner fan control module 53, an outer fan control module 54, and an expansion valve control module 55, wherein:

The inner fan control module 53 is configured to control the inner fan speed to gradually decrease in response to the stop signal receiving module 51 receiving the compressor stop signal.

The external fan control module 54 is configured to control the external fan to directly perform the windshield operation in response to the shutdown signal receiving module 51 receiving the compressor shutdown signal.

An expansion valve control module 55 for controlling the electronic expansion valve to maintain a constant opening degree in response to the shutdown signal receiving module 51 receiving the compressor shutdown signal; and controlling the electronic expansion when the compressor frequency is zero The valve will adjust the opening to the maximum.

In an embodiment of the present invention, as shown in FIG. 4, the compressor control module 52 is specifically configured to control the compressor to maintain the original frequency for the first time in response to the shutdown signal receiving module 51 receiving the compressor shutdown signal. After the interval T1, the compressor frequency is gradually reduced slowly; and the compressor is controlled to shut down after the second time interval (T2-T1) of the down-conversion operation, that is, when the compressor is down-converted to the time T2.

In an embodiment of the present invention, the internal fan control module 53 is configured to respond to the stop signal receiving module 51 receiving the compressor stop signal, and control the inner fan to maintain the original speed after running the first time interval T1, and then the inner fan speed Step by step; control the inner fan to gradually reduce the speed after running the second time interval (T2-T1), that is, control the inner fan to gradually decrease the speed and run to the time T2, and operate at a low windshield, wherein the low windshield speed is lower than the inner speed When the fan is down-converted to the speed of T2; and the inner fan is controlled to run in the low windshield for the third time interval (T3-T2), the inner fan is controlled to run at the low windshield to the time T3, and then shut down.

In the air conditioning control device according to the above embodiment of the present invention, when the compressor stop signal sent by the user is received in the compressor operating mode, the fan, the compressor and the electronic expansion valve are controlled in linkage mode at the mode switching time to reduce the noise transmission. The purpose of the transfer.

Specifically, the above embodiment of the present invention controls the direct fan downwind operation of the external fan to increase the evaporation pressure; after controlling the compressor and the inner fan to maintain the T1 time, the compressor frequency and the internal fan speed are slowly decreased, and the internal fan speed and the compressor frequency are simultaneously Slowly reduce to reduce the condensing pressure, so that the pressure difference between the whole electronic expansion valve changes slowly, where the compressor is closed when running to T2, and the internal fan is closed when running to T3, where the internal fan runs at T2~T3 The purpose is to blow the inner machine; thus, the pressure difference between the front and the back of the electronic expansion valve is changed more slowly, thereby further reducing the overall machine noise during mode switching.

Fig. 7 is a schematic view showing a third embodiment of the air conditioning control device of the present invention. As shown in FIG. 7, the air conditioning control device may include a memory 71 and a processor 72, wherein:

The memory 71 is configured to store instructions.

The processor 72 is configured to execute the instructions, such that the apparatus performs an operation of implementing the air conditioning control device method as described in any of the above embodiments.

In an embodiment of the invention, the command includes issuing an actuator such as a compressor, an internal fan, an external fan, an electronic expansion valve, etc., in a case where a compressor stop signal sent by a user is received in a compressor operation mode. Control instructions.

Figure 8 is a schematic view of an embodiment of an air conditioner of the present invention. As shown in FIG. 8, the air conditioner may include an air conditioner control device 81 and an actuator 82, wherein:

The air conditioning control device 81 is configured to send a control command to the actuator when the compressor stop signal sent by the user is received in the compressor operating mode.

The actuator 82 is configured to perform a corresponding operation according to a control instruction of the air conditioning control device 81.

In an embodiment of the present invention, the air conditioning control device 81 may be the air conditioning control device described in any of the above embodiments (for example, any of the embodiments of FIGS. 5-7).

In one embodiment of the invention, the actuator 82 may include a compressor, an internal fan, an external fan, an electronic expansion valve, and the like.

In an embodiment of the present invention, the air conditioning control device 81 may be specifically configured to execute the compressor, the internal fan, the external fan, the electronic expansion valve, etc., in the case where the compressor shutdown signal is received in the compressor operating mode. The device executes the following control instructions:

First, control the external fan to directly perform the windshield operation.

Second, after controlling the compressor to maintain the original frequency for the first time interval T1, the compressor frequency is gradually reduced; after controlling the compressor to reduce the frequency for the second time interval (T2-T1), the compressor is controlled to be down-converted to Shut down at time T2.

Third, after controlling the internal fan to maintain the original speed for the first time interval T1, the internal fan speed is gradually reduced; after the internal fan is gradually reduced, the second time interval (T2-T1) is controlled, that is, the internal fan is gradually reduced. When running to T2 When inscribed, running in a low windshield, wherein the low windshield speed is lower than the speed of the inner fan running down to T2; controlling the inner fan to operate in the low windshield after the third time interval (T3-T2), ie controlling the inner fan Shut down when running at low windshield to T3.

Fourth, the electronic expansion valve is controlled to maintain a constant opening; and when the compressor frequency drops to zero, the electronic expansion valve is controlled to maximize the opening.

The above embodiment of the present invention achieves the purpose of reducing noise transmission by performing linkage control of the fan, the compressor and the electronic expansion valve at the time of mode switching by receiving the compressor stop signal sent by the user in the compressor operating mode.

Specifically: control the external fan to directly reduce the windshield operation to increase the evaporation pressure; control the compressor and the internal fan to maintain the T1 time, the compressor frequency and the internal fan speed decrease slowly, and the internal fan speed and the compressor frequency decrease slowly to reduce Condensing pressure, so that the pressure difference between the whole electronic expansion valve changes slowly, wherein the compressor is closed when running to T2, and the internal fan is closed when running to T3. The internal fan is operated at T2~T3 to make the internal machine Blowing dry; thereby causing the pressure difference between the front and back of the entire electronic expansion valve to change more slowly, thereby further reducing the overall machine noise during mode switching.

The air conditioning control device described above can be implemented as an air conditioner controller.

The air conditioning control device described above may be implemented as a general purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application specific integrated circuit (ASIC), an on-site computer for performing the functions described herein. Program gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof.

So far, the present invention has been described in detail. In order to avoid obscuring the concepts of the present invention, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The description of the present invention has been presented for purposes of illustration and description. Many modifications and variations will be apparent to those skilled in the art. The embodiment was chosen and described in order to best explain the principles and embodiments of the invention,

Claims

An air conditioning control method, comprising:

Receiving a compressor stop signal sent by a user in a compressor operating mode;

The compressor frequency is gradually reduced in response to receiving the compressor shutdown signal in the compressor operating mode.
The method of claim 1 wherein, in response to receiving the compressor shutdown signal in a compressor operating mode, the method further comprises:

Control the internal fan speed to gradually decrease;

and / or,

Control the external fan to directly perform the windshield operation;

and / or,

The electronic expansion valve is controlled to maintain a constant opening; and when the compressor frequency drops to zero, the electronic expansion valve is controlled to maximize the opening.
The method of claim 1 or 2 wherein said stepping down the control compressor frequency comprises:

Controlling the compressor to maintain the original frequency after the first time interval, the compressor frequency is gradually reduced;

Control the compressor to run down after the second time interval.
The method according to claim 3, wherein said controlling the internal fan speed to gradually decrease comprises:

After controlling the inner fan to maintain the original speed for the first time interval, the internal fan speed is gradually reduced;

Controlling the internal fan to gradually reduce the speed after running for a second time interval, and operating at a low windshield, wherein the low windshield speed is lower than the speed of the inner fan after the second time interval of the frequency reduction operation;

Control the internal fan to shut down after running for a third time interval with low windshield.
The method of claim 4 wherein:

The first time interval is 1 s-2 s;

The second time interval is 3s-15s;

The third time interval is 13s-27s.
An air conditioning control device, comprising: a shutdown signal receiving module (51) and a compressor control module (52), wherein:

a shutdown signal receiving module (51) for receiving a compressor shutdown signal sent by a user in a compressor operating mode;

The compressor control module (52) is configured to control the compressor frequency to gradually decrease in response to the shutdown signal receiving module (51) receiving the compressor shutdown signal.
The apparatus of claim 6 further comprising at least one of an inner fan control module (53), an outer fan control module (54), and an expansion valve control module (55), wherein:

The internal fan control module (53) is configured to receive the compressor stop signal in response to the stop signal receiving module (51), and control the internal fan speed to gradually decrease;

The external fan control module (54) is configured to receive the compressor stop signal in response to the stop signal receiving module (51), and control the external fan to directly perform the windshield operation;

An expansion valve control module (55) for controlling the electronic expansion valve to maintain a fixed opening degree in response to the shutdown signal receiving module (51) receiving the compressor shutdown signal; and in the case where the compressor frequency drops to zero , control the electronic expansion valve to adjust the opening to the maximum.
Device according to claim 6 or 7, characterized in that

The compressor control module (52) is configured to: in response to the shutdown signal receiving module (51) receiving the compressor shutdown signal, controlling the compressor to maintain the original frequency operation for a first time interval, gradually reducing the compressor frequency; and controlling The compressor shuts down after the second time interval of the down-conversion operation.
The device of claim 8 wherein:

The inner fan control module (53) is configured to receive the compressor stop signal in response to the stop signal receiving module (51), and control the inner fan to maintain the original speed after the first time interval, and gradually reduce the inner fan speed; After the fan is gradually reduced in speed, the second time interval is followed by running in a low windshield, wherein the low windshield speed is lower than the speed of the inner fan after the second time interval of the down frequency operation; and the inner fan is controlled to operate in the low windshield for the third time interval. After shutdown.
The device of claim 9 wherein:

The first time interval is 1 s-2 s;

The second time interval is 3s-15s;

The third time interval is 13s-27s.
An air conditioning control device is characterized by comprising a memory (71) and a processor (72), wherein:

a memory (71) for storing instructions;

The processor (72) is configured to execute the instructions, such that the apparatus performs an operation of implementing the air conditioning control method according to any one of claims 1-5.
An air conditioner comprising a compressor, an internal fan, an external fan, an electronic expansion valve, and an air conditioning control device according to any one of claims 6-11.