CN113819639B - Control method and device for adjusting frequency of air conditioner compressor - Google Patents

Abstract

The invention provides a control method, device, electronic equipment and storage medium for frequency adjustment of an air conditioner compressor. The invention provides a control method for adjusting the frequency of an air conditioner compressor, comprising: obtaining the actual temperature rise rate of the outdoor environment in real time; judging whether the actual temperature rise rate reaches the target temperature rise rate; The operating frequency of the compressor; if the actual heating rate is equal to or greater than the target heating rate, control the compressor to reduce to the minimum frequency within the adjustment time, and keep running at the lowest frequency; the adjustment time is 20‑30s. The air conditioner compressor frequency adjustment control method provided by the present invention controls the compressor to work at the lowest frequency in a short period of time, so that the discharge temperature of the compressor drops in a short period of time, thereby reducing the discharge pressure and ensuring The compressor runs stably without downtime.

Description

Control method and device for air conditioner compressor frequency adjustment

technical field

The invention relates to the technical field of air conditioner compressors, in particular to a control method, device, electronic equipment and storage medium for frequency adjustment of an air conditioner compressor.

Background technique

In some thermal processing workshops, after the red-hot forgings are released, the ambient temperature rises rapidly, and the air-conditioning control system has no time to respond, and the air-conditioner compressor is prone to shutdown. In addition, in some places with hot climates, the ambient temperature rises rapidly Rapid phenomenon, which causes the air conditioner compressor to stop.

Contents of the invention

The invention provides a control method, device, electronic equipment and storage medium for frequency adjustment of an air conditioner compressor to solve the defect in the prior art that the air conditioner compressor shuts down when the ambient temperature rises rapidly.

The invention provides a control method for adjusting the frequency of an air conditioner compressor, comprising: obtaining the actual temperature rise rate of the outdoor environment in real time; judging whether the actual temperature rise rate reaches the target temperature rise rate; if the actual temperature rise rate is less than the target temperature rise rate , control the operating frequency of the compressor according to the outdoor ambient temperature; if the actual temperature increase rate is equal to or greater than the target temperature increase rate, control the compressor to reduce to the minimum frequency within the adjustment time, and keep the minimum frequency operation; wherein, the The above adjustment time is 20-30s.

According to a control method for adjusting the frequency of an air conditioner compressor provided by the present invention, the step of acquiring the actual temperature rise rate of the outdoor environment in real time further includes: acquiring the outdoor environment temperature in real time, and determining the actual temperature increase rate based on the outdoor environment temperature. Heating rate.

According to a control method for adjusting the frequency of an air conditioner compressor provided by the present invention, before the step of judging whether the actual temperature increase rate reaches the target temperature increase rate, it further includes: acquiring the target temperature increase rate, wherein the target temperature increase rate The rate is 0.01°C/s.

A method for controlling the frequency regulation of an air conditioner compressor according to the present invention further includes: controlling the outdoor fan to increase the rotational speed while the compressor is running at the lowest frequency.

According to the control method for adjusting the frequency of an air conditioner compressor provided by the present invention, it further includes: after increasing the speed of the outdoor fan, when the compressor runs stably for a preset time, controlling the speed of the outdoor fan to decrease.

According to a control method for adjusting the frequency of an air conditioner compressor provided by the present invention, the preset time is 1 minute.

The present invention also provides a device for adjusting the frequency of an air conditioner compressor, including: a first acquisition module, which is used to acquire the actual temperature rise rate of the outdoor environment in real time; a judgment module, which is used to judge the Whether the actual heating rate reaches the target heating rate; a first control module, the first control module is used to control the operating frequency of the compressor according to the outdoor ambient temperature when the actual heating rate is less than the target heating rate; When the actual temperature increase rate is equal to or greater than the target temperature increase rate, control the compressor to reduce to the minimum frequency within the adjustment time, and keep the operation at the minimum frequency.

A device for adjusting the frequency of an air conditioner compressor according to the present invention further includes: a determination module configured to determine the actual temperature rise rate based on the outdoor ambient temperature, wherein the first acquisition module also Used to obtain the outdoor ambient temperature in real time.

The present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the program, the frequency adjustment of the compressor of the air conditioner is realized as described above. The steps of the control method.

The present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the control method for frequency adjustment of an air conditioner compressor are realized as described above.

The control method for adjusting the frequency of the air conditioner compressor provided by the present invention controls the compressor to work at the lowest frequency in a short period of time when the temperature rise rate of the outdoor environment is fast, shortens the lag time of compressor exhaust, and makes the compression The exhaust temperature of the compressor drops in a short period of time, thereby reducing the exhaust pressure and ensuring the stable operation of the compressor without shutting down.

Description of drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Fig. 1 is the flow chart of the control method of the air conditioner compressor frequency adjustment provided by the present invention;

Fig. 2 is the structural representation of the device of air conditioner compressor frequency adjustment provided by the present invention;

Fig. 3 is a schematic structural diagram of an electronic device provided by the present invention;

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The features of the terms "first" and "second" in the description and claims of the present invention may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

The control method, device, electronic equipment and storage medium of the air conditioner compressor frequency adjustment of the present invention will be described below with reference to FIGS. 1-3 .

For inverter air conditioners, the computer board program usually corresponds the outdoor ambient temperature with the frequency of the compressor. When the outdoor ambient temperature reaches a certain value, the temperature sensor of the outdoor unit of the air conditioner will convert the temperature value into a digital signal and transmit it to the outdoor unit. In the computer board, the control system locks the frequency of the compressor. But the disadvantage of this frequency modulation method is: when two adjacent frequency points are switched to each other, if the ambient temperature changes drastically at this time, for example, when the ambient temperature rises at a rate of 0.02°C/s, the air conditioner will The frequency reduction should have started, but in order to prevent the compressor frequency from fluctuating too frequently and affecting the performance of the compressor, after the program receives and calculates the temperature digital signal, it will issue a frequency reduction command two minutes later to control the frequency reduction of the compressor. When the compressor starts to reduce frequency, the ambient temperature has risen to 50.4°C. At this time, the compressor discharge temperature needs to exceed 51°C to achieve heat exchange, and the corresponding discharge pressure has reached 3.2MPa or higher. When the compressor is at high frequency, in order to achieve high pressure, the input current of the compressor will increase correspondingly, and the peak value often exceeds the safe current of IPM or the safe current of the power supply, which will cause the compressor to stop.

Reducing the frequency of the compressor can make the compressor run smoothly, but if the compressor keeps running at low frequency, the cooling capacity of the air conditioner will also decrease accordingly, causing the indoor temperature to be unable to drop for a long time. Based on this, the present invention provides a control method for frequency adjustment of an air conditioner compressor to solve the above problems.

As shown in FIG. 1, in one embodiment of the present invention, the control method for frequency regulation of an air conditioner compressor specifically includes the following steps:

Step 101: Obtain the temperature rise rate of the outdoor environment in real time.

Specifically, the outdoor unit of the air conditioner is provided with a temperature sensor, which can detect the outdoor ambient temperature in real time, and then calculate the actual temperature rise rate of the outdoor environment.

Step 102: Determine whether the actual heating rate reaches the target heating rate; Step 103: If the actual heating rate is less than the target heating rate, control the operating frequency of the compressor according to the outdoor ambient temperature; if the actual heating rate is equal to or greater than the target heating rate, control the compressor Reduce to the lowest frequency within the adjustment time, and keep running at the lowest frequency; wherein, the adjustment time is 20-30s.

Specifically, when the actual temperature rise rate in the outdoor environment is less than the target temperature rise rate, the compressor automatically adjusts its own frequency according to the outdoor environment temperature, so that the compressor is in a stable operating state; the actual temperature rise rate in the outdoor environment is equal to or greater than the target temperature rise rate , control the compressor to reduce to the lowest frequency in a short period of time, and run at the lowest frequency.

Further, in an embodiment of the present invention, the target temperature rise rate may be 0.01°C/s, and the adjustment time is a relatively short time, such as 20-30s, when the temperature rise rate of the outdoor environment is equal to or greater than 0.01°C/s, Control the compressor to reduce to the lowest frequency within 20-30s. If the lowest frequency of the compressor is 35Hz, the compressor will keep running at the frequency of 35Hz. When the compressor is running at the lowest frequency, the temperature sensor of the outdoor unit will still detect the outdoor ambient temperature. If the actual temperature rise rate of the outdoor environment obtained is less than 0.01°C/s, the compressor will automatically adjust its temperature according to the outdoor ambient temperature. Frequency, work according to the frequency corresponding to the outdoor ambient temperature.

It is understandable that when the compressor works at the frequency corresponding to the outdoor ambient temperature, if the outdoor ambient temperature changes again, if the obtained actual heating rate is greater than the target heating rate again, the compressor will reduce the frequency again within the adjustment time to the lowest frequency and keep running at that lowest frequency.

In the embodiment of the present invention, when the obtained temperature increase rate of the outdoor environment is equal to or greater than 0.01°C/s, the compressor will drop to the lowest frequency in a very short time. The lag time of the gas is also short, the discharge temperature will drop in a short period of time, and the discharge pressure will also drop, so that the compressor can be guaranteed to run stably without shutting down.

The control method for adjusting the frequency of the air conditioner compressor provided by the embodiment of the present invention controls the compressor to work at the lowest frequency in a short period of time when the temperature of the outdoor environment is rising rapidly, so as to shorten the lag time of compressor exhaust, so that The discharge temperature of the compressor drops in a short period of time, thereby reducing the discharge pressure and ensuring stable operation of the compressor without downtime events.

Further, in one embodiment of the present invention, the step of obtaining the actual temperature rise rate of the outdoor environment in real time further includes: obtaining the outdoor environment temperature in real time, and determining the actual temperature rise rate of the outdoor environment based on the outdoor environment temperature.

Specifically, a temperature sensor is installed on the outdoor unit. The temperature sensor can collect the outdoor ambient temperature in real time. According to the change of the outdoor ambient temperature, the temperature rise rate of the outdoor environment per unit time can be calculated, that is, the actual temperature rise rate of the outdoor environment.

Further, in an embodiment of the present invention, before the step of judging whether the actual heating rate reaches the target heating rate, the method further includes: obtaining the target heating rate, wherein the target heating rate is 0.01° C./s.

Specifically, in this embodiment, in order to reduce the impact of the rapid temperature rise of the outdoor environment on the compressor, the unit of the temperature rise rate is set to °C/s, that is, when the external environment changes, the temperature of the ambient temperature can be quickly detected. Variety. Further, according to the experimental results, the target heating rate is set to 0.01°C/s. Of course, for some special environments, the target heating rate can also be faster, such as 0.015°C/s.

In an embodiment of the present invention, the control method for adjusting the frequency of the compressor of the air conditioner further includes: controlling the outdoor fan to increase the rotational speed while the compressor is running at the lowest frequency.

Specifically, when the compressor is running at the lowest frequency, the speed of the outdoor fan can be increased to enhance heat exchange and reduce the temperature of the refrigerant in the condenser, thereby reducing the exhaust temperature and pressure of the compressor. Specifically, such as increasing the speed of the outdoor fan from the normal speed to 960rpm. Generally speaking, the normal speed of the outdoor fan is 840rpm.

Further, in an embodiment of the present invention, the control method for adjusting the frequency of the air conditioner compressor further includes: after increasing the speed of the outdoor fan, when the compressor runs stably for a preset time, controlling the outdoor fan to reduce the speed.

Specifically, after increasing the speed of the outdoor fan, and after the compressor runs stably for a preset time, the speed of the outdoor fan can be reduced, so that the speed of the outdoor fan can be reduced to a normal speed, such as 840rpm. Optionally, in an embodiment of the present invention, the preset time is 1 minute.

The device for adjusting the frequency of an air conditioner compressor provided by the present invention is described below. The device for adjusting the frequency of an air conditioner compressor described below and the method for controlling the frequency of an air conditioner compressor described above can be referred to in correspondence.

As shown in FIG. 2 , in an embodiment of the present invention, the device for adjusting the frequency of an air conditioner compressor includes: a first acquisition module 201 , a judgment module 202 and a first control module 203 . The first acquisition module 201 is used to obtain the actual temperature rise rate of the outdoor environment in real time. The judgment module 202 is used to judge whether the actual temperature rise rate has reached the target temperature rise rate. The ambient temperature controls the operating frequency of the compressor; when the actual temperature increase rate is equal to or greater than the target temperature increase rate, the compressor is controlled to reduce to the minimum frequency within the adjustment time and keep running at the minimum frequency.

Specifically, the first acquisition module 201 can acquire the actual temperature rise rate information of the outdoor environment, and send the actual temperature rise rate information to the judgment module 202, and the judgment module 202 compares the actual temperature rise rate with the preset target temperature rise rate, And the comparison result is sent to the first control module 203, and the first control module 203 controls the compressor to operate according to the corresponding strategy according to the comparison result.

Further, in an embodiment of the present invention, the device for adjusting the frequency of the air conditioner compressor further includes: a determination module. Specifically, the outdoor unit of the air conditioner is provided with a temperature sensor that can detect the outdoor ambient temperature. The first acquisition module is also used to acquire the outdoor ambient temperature in real time and send the acquired temperature data to the determination module. The determination module is based on real-time The detected temperature data calculates the actual temperature rise rate of the outdoor environment.

Further, in an embodiment of the present invention, the device for adjusting the frequency of the air conditioner compressor further includes a second acquisition module, which is used to acquire a target temperature increase rate, wherein the target temperature increase rate is 0.01° C./s.

Further, in one embodiment of the present invention, the device for adjusting the frequency of the air conditioner compressor further includes a second control module, the second control module is used to control the speed increase of the outdoor fan when the compressor is running at the lowest frequency. Big.

Further, in an embodiment of the present invention, the device for adjusting the frequency of the air conditioner compressor further includes a third control module, the third control module is used to increase the speed of the outdoor fan, when the compressor runs stably for a preset time After that, control the speed of the outdoor fan to decrease.

As shown in FIG. 3 , an embodiment of the present invention also provides an electronic device, which may include: a processor (processor) 310, a communication interface (Communications Interface) 320, a memory (memory) 830, and a communication bus 340, wherein , the processor 310 , the communication interface 320 , and the memory 330 communicate with each other through the communication bus 340 . The processor 310 can call the logic instructions in the memory 330 to execute the control method for adjusting the compressor frequency of the air conditioner.

It should be noted that the electronic device in this embodiment may be a server, a PC, or other devices during specific implementation, as long as its structure includes a processor 310, a communication interface 320 as shown in FIG. 3 , the memory 330 and the communication bus 340, wherein the processor 310, the communication interface 320, and the memory 330 communicate with each other through the communication bus 340, and the processor 310 can call the logic instructions in the memory 330 to execute the above method. This embodiment does not limit the specific implementation form of the electronic device.

In addition, the above-mentioned logic instructions in the memory 330 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

On the other hand, the present invention also provides a computer program product, the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer During execution, the computer can execute the control method for adjusting the frequency of the air conditioner compressor provided by the above-mentioned methods. The method includes: obtaining the actual temperature increase rate of the outdoor environment in real time; judging whether the actual temperature increase rate reaches the target temperature increase rate; If the actual heating rate is less than the target heating rate, the operating frequency of the compressor is controlled according to the outdoor ambient temperature; if the actual heating rate is equal to or greater than the target heating rate, the compressor is controlled to reduce to the lowest frequency within the adjustment time, and keep The minimum frequency is running; wherein, the adjustment time is 20-30s.

In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to perform the control methods for adjusting the frequency of the compressor of the air conditioner provided above. , the method includes: obtaining the actual temperature rise rate of the outdoor environment in real time; judging whether the actual temperature rise rate reaches the target temperature rise rate; if the actual temperature rise rate is less than the target temperature rise rate, controlling the operating frequency of the compressor according to the outdoor environment temperature; If the actual temperature increase rate is equal to or greater than the target temperature increase rate, control the compressor to reduce to the lowest frequency within the adjustment time, and keep the operation at the lowest frequency; wherein, the adjustment time is 20-30s.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.

Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (7)

1. A control method for adjusting the frequency of an air conditioner compressor is characterized by comprising the following steps:

acquiring the actual heating rate of the outdoor environment in real time;

judging whether the actual heating rate reaches a target heating rate or not, wherein the target heating rate is 0.01 ℃/s;

if the actual heating rate is smaller than the target heating rate, controlling the running frequency of the compressor according to the outdoor environment temperature;

if the actual heating rate is equal to or greater than the target heating rate, controlling the compressor to reduce to the lowest frequency within the adjusting time, and keeping the lowest frequency to operate;

controlling the outdoor fan to increase the rotating speed in the process that the compressor keeps the lowest frequency operation, and after the rotating speed of the outdoor fan is increased and the compressor stably operates for a preset time, controlling the outdoor fan to reduce the rotating speed;

after the compressor runs according to the lowest frequency, if the actual temperature rise speed is smaller than the target temperature rise speed, controlling the running frequency of the compressor according to the outdoor environment temperature;

wherein the adjustment time is 20-30s.

2. The method as claimed in claim 1, wherein the step of obtaining the actual heating rate of the outdoor environment in real time further comprises:

and acquiring the outdoor environment temperature in real time, and determining the actual heating rate based on the outdoor environment temperature.

3. The method as claimed in claim 1, wherein the preset time is 1 minute.

4. An apparatus for frequency adjustment of an air conditioner compressor, comprising:

the first acquisition module is used for acquiring the actual heating rate of the outdoor environment in real time;

the judging module is used for judging whether the actual heating rate reaches a target heating rate or not, wherein the target heating rate is 0.01 ℃/s;

the first control module is used for controlling the running frequency of the compressor according to the outdoor environment temperature when the actual temperature rising rate is smaller than the target temperature rising rate; when the actual heating rate is equal to or greater than the target heating rate, controlling the compressor to reduce to the lowest frequency within the adjusting time, and keeping the lowest frequency to operate; after the compressor runs according to the lowest frequency, if the actual temperature rise speed is smaller than the target temperature rise speed, controlling the running frequency of the compressor according to the outdoor environment temperature, wherein the adjusting time is 20-30s;

the second control module is used for controlling the rotation speed of the outdoor fan to increase in the process that the compressor keeps the lowest frequency operation;

and the third control module is used for controlling the rotating speed of the outdoor fan to be reduced after the rotating speed of the outdoor fan is increased and the compressor stably runs for a preset time.

5. The apparatus for frequency adjustment of an air conditioner compressor according to claim 4, further comprising:

a determining module configured to determine the actual temperature-increasing rate based on the outdoor environment temperature, wherein the first obtaining module is further configured to obtain the outdoor environment temperature in real time.

6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing said program, carries out the steps of the control method of air conditioner compressor frequency regulation according to any one of claims 1-3.

7. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when being executed by a processor, implements the steps of the control method of air conditioner compressor frequency adjustment according to any one of claims 1-3.

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