CN114543330A - Preheating control method, control device and air conditioner for compressor of air conditioner - Google Patents

Abstract

The invention provides a preheating control method and a preheating control device for a compressor of an air conditioner and the air conditioner, wherein the method comprises the following steps: s1: when a starting instruction of the compressor is received and a preset preheating condition is met, controlling a winding of the compressor to be heated with first preheating power; s2: after a preset time, detecting whether the compressor is started successfully; s3: when the compressor is not started successfully, controlling a winding of the compressor to heat with second preheating power, wherein the second preheating power is larger than the first preheating power; repeatedly executing the steps S2 and S3 until the compressor is successfully started. The preheating control method of the compressor of the air conditioner has good preheating improvement effect, can effectively improve the starting success rate of the compressor, and has good user experience.

Description

Preheating control method, control device and air conditioner for compressor of air conditioner

technical field

The present invention relates to the technical field of air conditioning devices, and in particular, to a preheating control method, a control device and an air conditioner for a compressor of an air conditioner.

Background technique

After the existing air conditioner fails to start in a low temperature state, the compressor is energized to make the windings inside the compressor heat up for preheating. Usually, a fixed preheating power is set during winding preheating, and the same preheating power is used for preheating treatment between consecutive startup failures, resulting in poor preheating improvement effect and inability to effectively improve the startup success rate. Bad user experience.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a preheating control method for a compressor of an air conditioner that can effectively improve the startup success rate of the compressor.

A further object of the present invention is to enable automatic adjustment of the preheating power of the air conditioner to reduce invalid repeated preheating.

In particular, the present invention provides a preheating control method for a compressor of an air conditioner, including:

S1: when a start command of the compressor of the air conditioner is received and the preset preheating condition is met, control the winding of the compressor to heat with the first preheating power;

S2: After the preset time period, check whether the compressor is successfully started;

S3: When the compressor fails to start successfully, the windings of the compressor are controlled to be heated with the second preheating power, wherein the second preheating power is greater than the first preheating power;

Repeat steps S2 and S3 until the compressor starts successfully.

Optionally, the air conditioner is set with a maximum preheating power and a minimum preheating power of the windings of the compressor;

The step of controlling the windings of the compressor to heat at the first preheating power includes:

Obtain the minimum preheating power as the first preheating power;

The windings that control the compressor are energized and heated at the first preheating power.

Optionally, the step of controlling the winding of the compressor to heat with the second preheating power includes:

Get the maximum preheating power and the minimum preheating power;

Calculate the average value of the maximum preheating power and the minimum preheating power to obtain the second preheating power;

The windings of the compressor are controlled to be heated at the second preheating power, and the second preheating power is set to the new minimum preheating power.

Optionally, the step of judging whether the compressor satisfies the preset preheating condition includes:

Get the operating mode of the air conditioner;

Obtain the ambient temperature of the environment where the outdoor unit of the air conditioner is located;

It is determined whether the compressor meets preset warm-up conditions based on the operating mode and ambient temperature.

Optionally, the step of determining whether the compressor satisfies the preset preheating condition based on the operating mode and the ambient temperature includes:

Determine whether the operating mode is the heating mode;

If so, determine whether the ambient temperature is less than the preset temperature threshold;

When the ambient temperature is lower than the preset temperature threshold, it is determined that the compressor meets the preset preheating condition.

Optionally, a temperature sensor is provided outside the outdoor unit; the step of acquiring the ambient temperature of the environment where the outdoor unit of the air conditioner is located includes:

Obtain the detection value of the temperature sensor to obtain the first temperature value;

Obtain the temperature information in the weather forecast information of the area where the outdoor unit is located, and obtain the second temperature value;

Calculate the average value of the first temperature value and the second temperature value to obtain the ambient temperature.

Optionally, the step of detecting whether the compressor is started successfully includes:

Determine whether the current operating current of the compressor is greater than the preset current threshold;

If so, confirm that the compressor starts successfully;

If not, confirm that the compressor has not started successfully.

Optionally, the step of detecting whether the compressor is started successfully includes:

Determine whether the current power of the compressor is greater than the preset power threshold;

If so, confirm that the compressor starts successfully;

If not, confirm that the compressor has not started successfully.

The present invention also provides a control device for an air conditioner, comprising a processor and a memory, wherein a machine executable program is stored in the memory, and when the machine executable program is executed by the processor, it is used to realize the preheating control of the compressor of the aforementioned air conditioner method.

The present invention also provides an air conditioner having the aforementioned control device for the air conditioner.

The preheating control method of the compressor of the air conditioner of the present invention controls the windings of the compressor to be heated with the first preheating power when the start command of the compressor of the air conditioner is received and the preset preheating condition is satisfied, and when the compressor is compressed After the compressor fails to start successfully, control the windings of the compressor to heat with a second preheating power greater than the first preheating power, and repeat the above steps until the compressor starts successfully, so that a higher preheating power is used after the compressor fails to start. The power is preheated, and the preheating improvement effect is good, which can effectively improve the startup success rate of the compressor, and the user experience is good.

Further, in the preheating control method of the compressor of the air conditioner of the present invention, the second preheating power is obtained by calculating the average value of the maximum preheating power and the minimum preheating power, and the windings of the compressor are controlled to preheat the second preheating power. Power heating, and set the second preheating power as the new minimum preheating power, so that the preheating power can be adjusted automatically, reducing invalid repeated preheating, further enhancing the preheating effect, and improving the success rate of compressor startup, and then Guarantee the life and reliability of the compressor.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

FIG. 1 is a schematic block diagram of the components of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a schematic flowchart of a preheating control method for the compressor of the air conditioner shown in FIG. 1 .

FIG. 3 is a schematic block diagram showing the components of the control device of the air conditioner shown in FIG. 1 .

FIG. 4 is another schematic flow chart of the preheating control method of the compressor of the air conditioner shown in FIG. 1 .

FIG. 5 is a detailed flow chart of a preheating control method of the compressor of the air conditioner shown in FIG. 1 .

Detailed ways

FIG. 1 is a schematic block diagram showing the components of an air conditioner 100 according to an embodiment of the present invention. FIG. 2 is a schematic flowchart of a preheating control method for the compressor 121 of the air conditioner 100 shown in FIG. 1 . FIG. 3 is a schematic block diagram showing the component configuration of the control device 200 of the air conditioner 100 shown in FIG. 1 .

As shown in FIG. 1 , an embodiment of the present invention provides an air conditioner 100 , which is an air conditioning device that can cool or heat an indoor environment. The air conditioner 100 includes an indoor unit 101 and an outdoor unit 102 . The casing (not shown in the figure) of the indoor unit 101 is provided with an air inlet and an air outlet, and an indoor heat exchanger 111 and an indoor fan 112 are arranged in the casing, and the air entering the casing from the air inlet exchanges heat with the indoor. After heat exchange, the heat exchanger 111 forms a heat exchange air flow and flows into the room through the air outlet. The outdoor unit 102 is provided with a compressor 121 , an outdoor heat exchanger 122 and an outdoor fan 123 . The compressor 121 , the outdoor heat exchanger 122 , the throttle element (not shown in the figure), and the indoor heat exchanger 111 together constitute the refrigerant circulation system of the air conditioner 100 . As shown in FIG. 2 , the preheating control method for the compressor 121 of the air conditioner 100 according to the embodiment of the present invention includes the following steps:

S1: When a start command of the compressor 121 of the air conditioner 100 is received and the preset preheating condition is satisfied, the winding 124 of the compressor 121 is controlled to be heated with the first preheating power;

S2: After a preset time period, check whether the compressor 121 is successfully started;

S3: when the compressor 121 is not successfully started, the winding 124 of the compressor 121 is controlled to be heated with a second preheating power, wherein the second preheating power is greater than the first preheating power;

Steps S2 and S3 are repeated until the compressor 121 is successfully started.

The method for controlling the preheating of the compressor 121 of the air conditioner 100 according to the embodiment of the present invention is to control the winding 124 of the compressor 121 to first start the compressor 121 when the start command of the compressor 121 of the air conditioner 100 is received and the preset preheating condition is satisfied. The preheating power is used for heating, and when the compressor 121 is not successfully started, the winding 124 of the compressor 121 is controlled to be heated with a second preheating power greater than the first preheating power, and the foregoing steps are repeated until the compressor 121 is successfully started, so that After the compressor 121 fails to start up, a higher preheating power is used to perform the preheating treatment, the preheating improvement effect is good, the startup success rate of the compressor 121 can be effectively improved, and the user experience is good.

As shown in FIG. 3 , the control device 200 of the air conditioner 100 according to the embodiment of the present invention has a memory 202 and a processor 201. The memory 202 stores a machine executable program 220. When the machine executable program 220 is executed by the processor 201, A preheating control method for realizing the compressor 121 of the air conditioner 100 described above.

In some embodiments, the air conditioner 100 of the embodiment of the present invention is set with the maximum preheating power and the minimum preheating power of the winding 124 of the compressor 121; in step S1, the winding 124 of the compressor 121 is controlled to preheat the first The steps of power heating include:

Obtain the minimum preheating power as the first preheating power;

The winding 124 of the control compressor 121 is energized and heated with the first preheating power.

The maximum preheating power and the minimum preheating power of the winding 124 of the compressor 121 may be stored in the air conditioner 100 in advance. The maximum preheating power is the maximum power that can be used by the winding 124 for heating, and the minimum preheating power is the minimum power that can be used by the winding 124 for heating.

In some embodiments, in step S3, the step of controlling the winding 124 of the compressor 121 to be heated with the second preheating power includes:

Get the maximum preheating power and the minimum preheating power;

Calculate the average value of the maximum preheating power and the minimum preheating power to obtain the second preheating power;

The winding 124 of the control compressor 121 is heated with the second preheating power, and the second preheating power is set as the new minimum preheating power.

In the preheating control method for the compressor 121 of the air conditioner 100 in the embodiment of the present invention, the second preheating power is obtained by calculating the average value of the maximum preheating power and the minimum preheating power, and the winding 124 of the compressor 121 is controlled to be the first preheating power. The second preheating power is heated, and the second preheating power is set as the new minimum preheating power, so that the preheating power can be automatically adjusted, the invalid repeated preheating is reduced, the preheating effect is further enhanced, and the startup of the compressor 121 is improved. The success rate is thus guaranteed to ensure the life and reliability of the compressor 121 . At the same time, since the second preheating power is gradually increased in steps, the power consumption can be reduced while ensuring the enhanced preheating effect. It can be understood that the second preheating power can reach the maximum preheating power.

In step S2, the preset duration may be, for example, 1-3 minutes. For example, after controlling the winding 124 of the compressor 121 to be heated for 3 minutes with the first preheating power, check whether the compressor 121 is successfully started. Similarly, after controlling the winding 124 of the compressor 121 to be heated with the second preheating power for 3 minutes, check again. Whether the compressor 121 is started successfully. Therefore, the preheating power can be adjusted relatively quickly, but not too frequently, so as to achieve the dual purpose of improving the preheating effect and saving energy.

In some embodiments, in step S2, the step of detecting whether the compressor 121 is successfully started includes:

Determine whether the current operating current of the compressor 121 is greater than a preset current threshold;

If so, it is determined that the compressor 121 is successfully started;

If not, it is determined that the compressor 121 is not started successfully.

In other embodiments, in step S2, the step of detecting whether the compressor 121 is successfully started includes:

Determine whether the current power of the compressor 121 is greater than a preset power threshold;

If so, it is determined that the compressor 121 is successfully started;

If not, it is determined that the compressor 121 is not started successfully.

After the compressor 121 is successfully started, its working current will gradually increase and reach a certain current range. Therefore, by detecting the current operating current value of the compressor 121, it can be determined whether the compressor 121 is successfully started. The preset current threshold may be, for example, zero. The preset power threshold may be zero, for example. The operability and reliability of the basis for determining whether the compressor 121 is started successfully is based on the comparison between the current operating current value of the compressor 121 and the preset current threshold value. The current operating current of the compressor 121 can be realized by a current detection circuit, which will not be repeated here.

FIG. 4 is another schematic flowchart of a preheating control method for the compressor 121 of the air conditioner 100 shown in FIG. 1 . In the preheating control method for the compressor 121 of the air conditioner 100 according to the embodiment of the present invention, the step of judging whether the compressor 121 satisfies the preset preheating condition includes:

S402: Obtain the operation mode of the air conditioner 100;

S404: Obtain the ambient temperature of the environment where the outdoor unit 102 of the air conditioner 100 is located;

S406: Determine whether the compressor 121 satisfies the preset preheating condition based on the operation mode and the ambient temperature.

Specifically, in step S406, the step of determining whether the compressor 121 satisfies the preset preheating condition based on the operating mode and the ambient temperature includes:

Determine whether the operating mode is the heating mode;

If so, determine whether the ambient temperature is less than the preset temperature threshold;

When the ambient temperature is lower than the preset temperature threshold, it is determined that the compressor 121 satisfies the preset preheating condition.

The air conditioner 100 according to the embodiment of the present invention starts the preheating control of the compressor 121 only when the operating mode is the heating mode and the ambient temperature is lower than the preset temperature threshold, instead of continuously heating, which can achieve the purpose of energy saving and power saving . The preset temperature threshold may be, for example, 0°C.

As shown in FIG. 1 , a temperature sensor 103 is provided outside the outdoor unit 102 . Step S404, the step of acquiring the ambient temperature of the environment where the outdoor unit 102 of the air conditioner 100 is located includes:

Obtain the detection value of the temperature sensor 103 to obtain the first temperature value;

Obtain the temperature information in the weather forecast information of the area where the outdoor unit 102 is located, and obtain the second temperature value;

Calculate the average value of the first temperature value and the second temperature value to obtain the ambient temperature.

In the preheating control method for the compressor 121 of the air conditioner 100 according to the embodiment of the present invention, the detection value of the temperature sensor 103 is used as the first temperature value, and the temperature information in the weather forecast information is obtained as the second temperature value, and the two The average temperature is taken as the ambient temperature, which can ensure the accuracy of the ambient temperature, thereby ensuring the accuracy of the judgment of whether the compressor 121 satisfies the preset preheating condition. The acquisition of the temperature information in the weather forecast information may be achieved by setting an acquisition module (not shown in the figure) in the air conditioner 100 , and the acquisition module is configured to acquire the weather forecast information of the area where the outdoor unit 102 is located.

FIG. 5 is a detailed flow chart of the preheating control method of the compressor 121 of the air conditioner 100 shown in FIG. 1 . The preheating control method for the compressor 121 of the air conditioner 100 according to the embodiment of the present invention includes the following steps:

S502: Receive a start instruction of the compressor 121 of the air conditioner 100, determine that the operation mode of the air conditioner 100 is the heating mode, and the ambient temperature is less than a preset temperature threshold.

S504 : Control the windings 124 of the compressor 121 to be heated with the first preheating power, where the first preset power is the minimum preheating power of the windings 124 of the compressor 121 .

S506: After a preset time period, check whether the compressor 121 is successfully started. When the judgment result of step S506 is YES, step S508 is executed; when the judgment result of step S506 is NO, step S510 is executed.

S508: The air conditioner 100 operates normally according to the conventional procedure.

S510: Calculate the average value of the maximum preheating power and the minimum preheating power to obtain the second preheating power.

S512: Control the winding 124 of the compressor 121 to be heated with the second preheating power, and set the second preheating power as a new minimum preheating power.

S514: After a preset time period, restart the compressor 121 again. After step S514, return to step S506, and check again whether the compressor 121 is successfully started. Steps S506 to S514 are repeatedly executed until the determination result of step S506 is yes.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. A preheating control method of a compressor of an air conditioner includes:

s1: when a starting instruction of the compressor is received and a preset preheating condition is met, controlling a winding of the compressor to be heated with first preheating power;

s2: after a preset time, detecting whether the compressor is started successfully;

s3: when the compressor is not started successfully, controlling a winding of the compressor to heat with second preheating power, wherein the second preheating power is larger than the first preheating power;

repeatedly executing the steps S2 and S3 until the compressor is successfully started.

2. The method of claim 1, wherein the air conditioner is set with a maximum preheating power and a minimum preheating power of a winding of the compressor;

the step of controlling the windings of the compressor to heat at a first preheating power includes:

acquiring the minimum preheating power as the first preheating power;

controlling the energization of the windings of the compressor and heating at the first preheating power.

3. The method of claim 2, wherein the step of controlling the windings of the compressor to heat at a second preheat power comprises:

acquiring the maximum preheating power and the minimum preheating power;

calculating the average value of the maximum preheating power and the minimum preheating power to obtain the second preheating power;

controlling a winding of the compressor to heat with the second preheating power and setting the second preheating power to the new minimum preheating power.

4. The method of claim 1, wherein the step of determining whether the compressor satisfies a preset preheating condition comprises:

acquiring an operation mode of the air conditioner;

acquiring the environment temperature of the environment where an outdoor unit of the air conditioner is located;

determining whether the compressor satisfies the preset preheating condition based on the operation mode and the ambient temperature.

5. The method of claim 4, wherein the step of determining whether the compressor satisfies the preset warm-up condition based on the operation mode and the ambient temperature comprises:

judging whether the operation mode is a heating mode or not;

if so, judging whether the environmental temperature is smaller than a preset temperature threshold value;

and when the environment temperature is smaller than the preset temperature threshold value, determining that the compressor meets the preset preheating condition.

6. The method of claim 4, wherein a temperature sensor is provided at an outside of the outdoor unit; the step of obtaining the ambient temperature of the environment where the outdoor unit of the air conditioner is located includes:

acquiring a detection value of the temperature sensor to obtain a first temperature value;

acquiring temperature information in weather forecast information of an area where the outdoor unit is located to obtain a second temperature value;

and calculating the average value of the first temperature value and the second temperature value to obtain the environment temperature.

7. The method of claim 1, wherein the step of detecting whether the compressor is successfully started comprises:

judging whether the current working current of the compressor is larger than a preset current threshold value or not;

if so, determining that the compressor is started successfully;

if not, determining that the compressor is not started successfully.

8. The method of claim 1, wherein the step of detecting whether the compressor is successfully started comprises:

judging whether the current power of the compressor is greater than a preset power threshold value or not;

if so, determining that the compressor is started successfully;

if not, determining that the compressor is not started successfully.

9. A control apparatus of an air conditioner, comprising a processor and a memory, the memory storing a machine-executable program, and the machine-executable program being executed by the processor for implementing the warm-up control method of the compressor of the air conditioner according to any one of claims 1 to 8.

10. An air conditioner having the control device of the air conditioner according to claim 9.

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