CN108332342B - Heating operation control method for air conditioner - Google Patents

Abstract

The invention discloses a heating operation control method of an air conditioner, which comprises the following steps: the air conditioner is heated and operated, the real-time rotating speed of the indoor fan is obtained and compared with the reference rotating speed; executing a comfort control process after the real-time rotating speed meets the comfort control triggering condition; the comfort control trigger condition includes at least: the real-time rotating speed is not greater than the reference rotating speed; the comfort control process includes at least: and controlling the indoor fan to operate at a target rotating speed higher than the real-time rotating speed. The invention can solve the problem of poor heating comfort caused by layering of indoor air temperature in the prior art during heating.

Description

Air conditioner heating operation control method

technical field

The invention belongs to the technical field of air conditioning, in particular to the control of an air conditioner, and more specifically, to a method for controlling the heating operation of an air conditioner.

Background technique

In the prior art, when the air conditioner is in heating operation, it is usually controlled according to the indoor temperature. When the indoor temperature is close to the target temperature, the frequency of the compressor and the rotational speed of the indoor fan are both reduced. The speed of the indoor fan is reduced, and the indoor air circulation speed is slowed down. During the heating operation, the proportion of hot air blown by the indoor unit is small, and the hot air floats up. Then, after a long period of operation, due to the lack of indoor air circulation, the indoor air temperature will be seriously stratified, the upper air temperature will be high, and the lower air temperature will be low. , and the main activity range of the human body is in the lower space with low temperature, resulting in poor heating comfort.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a heating operation control method of an air conditioner, which solves the problem of poor heating comfort caused by stratification of indoor air temperature during heating in the prior art.

In order to realize the above-mentioned purpose of the invention, the heating operation control method provided by the present invention adopts the following technical solutions to be realized:

A method for controlling the heating operation of an air conditioner, the method comprising:

During the heating operation of the air conditioner, obtain the real-time speed of the indoor fan and compare it with the reference speed;

After the real-time rotational speed satisfies the comfort control trigger condition, execute the comfort control process;

The comfort control trigger condition at least includes: the real-time rotational speed is not greater than the reference rotational speed;

The comfort control process at least includes: controlling the indoor fan to operate at a target rotational speed higher than the real-time rotational speed.

In the method as described above, the comfort control trigger condition further includes: the real-time rotational speed is not greater than the reference rotational speed for a duration that reaches a reference time.

In the above method, the controlling the indoor fan to run at a target rotation speed higher than the real-time rotation speed specifically includes: controlling the indoor fan to run at a target rotation speed that is a maximum rotation speed allowed for heating operation.

As described above, the comfort control process further includes:

The wind guide angle of the indoor unit air guide plate is adjusted so that the wind guided by the air guide plate flows in a direction below the horizontal direction.

The method as described above, further comprising:

The heating operation of the air conditioner is to obtain the real-time frequency of the compressor of the air conditioner;

The comfort control process further includes controlling the compressor to operate at a target frequency higher than the real-time frequency.

In the above method, the controlling the compressor to operate at a target frequency higher than the real-time frequency specifically includes: controlling the compressor to operate at the target frequency at a maximum frequency allowed for heating operation.

In the above method, start timing from entering the comfort control process, exit the comfort control process after the timing time reaches a preset time, and continue to perform the judgment of the comfort control trigger condition.

In the above method, after exiting the comfort control process, the air conditioner is transferred to the operating state before entering the comfort control process.

The method as described above, further comprising:

The air conditioner is in heating operation, obtains the real-time air guide angle of the air guide plate of the indoor unit, and calculates the deviation angle between the real-time air guide angle and the preset air guide angle of the air guide plate; the preset air guide angle is the output angle of the indoor unit. The air guide angle of the air guide plate when the air outlet air volume is the largest;

The reference rotational speed is determined according to the deviation angle and a preset reference rotational speed, such that the larger the deviation angle is, the larger the reference rotational speed is.

Preferably, when the deviation angle is 0°, the reference rotational speed is the preset reference rotational speed.

Compared with the prior art, the advantages and positive effects of the present invention are as follows: the method for controlling the heating operation of an air conditioner provided by the present invention executes the comfort control process after the real-time rotational speed of the indoor fan is reduced to reach the comfort control trigger condition, Control the indoor fan to run at a target speed higher than the real-time speed; by forcibly increasing the speed of the indoor fan, the air outlet speed of the air outlet of the indoor unit can be increased through the increase of the fan speed, and the indoor air circulation can be accelerated, effectively avoiding the speed reduction caused by , The poor air circulation leads to the occurrence of temperature stratification in the indoor air during heating, which leads to the problem of poor heating comfort.

Other features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a flowchart of an embodiment of a method for controlling the heating operation of an air conditioner according to the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Please refer to FIG. 1 , which is a flowchart of an embodiment of a method for controlling the heating operation of an air conditioner according to the present invention.

As shown in FIG. 1 , the control method for realizing the heating operation of the air conditioner in this embodiment includes:

Step 11: The air conditioner is in heating operation, and the real-time rotational speed of the indoor fan is obtained and compared with the reference rotational speed.

The real-time rotation speed of the indoor fan refers to the rotation speed of the indoor fan obtained according to a certain sampling frequency during the heating operation of the air conditioner. The rotational speed of the indoor fan is controlled by the air conditioner controller, so the controller can easily obtain the real-time rotational speed. The reference rotational speed is a rotational speed value that reflects whether the indoor air circulation is sufficient. It can be a known, pre-stored fixed value, or a value determined according to some other real-time parameters and corresponding to the real-time rotational speed.

In some preferred embodiments, the reference rotation speed is a value determined according to the real-time wind guide angle of the indoor unit air guide plate corresponding to the real-time rotation speed. Specifically, during the heating operation of the air conditioner, the real-time air guide angle of the air guide plate of the indoor unit is also obtained. The air guiding angle of the air deflector is controlled by the controller of the air conditioner, so the controller can also easily obtain the real-time air guiding angle of the air deflector. After the real-time air guide angle of the indoor unit air guide plate is obtained, the deviation angle between the real-time air guide angle and the preset air guide angle of the air guide plate is calculated. The preset air guide angle is the air guide angle of the air guide plate when the air volume of the air outlet of the indoor unit is the largest. For an air conditioner with a definite structure, the preset wind guide angle is definite, and can be stored in the memory of the controller in advance, and can be called at any time during use. Then, the reference rotational speed is determined according to the calculated deviation angle and the preset reference rotational speed, and the larger the deviation angle is, the larger the reference rotational speed is. Among them, the preset reference speed is a preset fixed value, which can be recalled and used at any time in the pre-stored memory. The specific methods for determining the reference speed according to the deviation angle and the preset reference speed can be various, as long as the reference speed can be corrected according to the difference of the deviation angle to obtain the reference speed corresponding to the deviation angle, and the larger the deviation angle is, the larger the deviation angle is. , the reference speed is larger. Preferably, the reference speed is the minimum fan speed at which the air outlet of the air deflector at the preset air guiding angle can make the indoor air fully circulate. The air outlet area and the air outlet speed of the air outlet are determined. By determining the reference rotational speed according to the real-time air guiding angle of the air deflector, the influence of the air guiding angle of the air deflector on the factors affecting the air circulation such as the air volume and air outlet speed is fully considered, and then the comfort is determined based on the reference rotational speed. The target speed of the indoor fan in the control process will be more reasonable and accurate, which can not only solve the problem of air temperature stratification, but also avoid unnecessary energy consumption.

For example, as a specific embodiment, the preset wind guide angle is that the angle between the wind guide plate and the horizontal direction is 45°. The corresponding relationship between the deviation angle and the correction coefficient is pre-stored, and the correction coefficient is a positive number not less than 1. For example, if the deviation angle range is [0°, 5°), the corresponding correction coefficient is 100%; if the deviation angle is [5°, 10°), the corresponding correction coefficient is 105%; the deviation angle range is [10°, 20 °), the corresponding correction factor is 115%; the deviation angle is [20°, 30°), the corresponding correction factor is 130%; the deviation angle is greater than or equal to 30°, the corresponding correction factor is 140%. The obtained real-time air guide angle of the indoor unit air guide plate is 60°, then the deviation angle between the real-time air guide angle and the preset air guide angle is 15°. According to the correspondence between the above deviation angle and the correction coefficient, the corresponding correction coefficient is 115%. The reference rotational speed is determined according to the deviation angle and the preset reference rotational speed. Specifically, the rotational speed determined according to the product of the reference rotational speed and the correction coefficient is the reference rotational speed. Assuming that the reference speed is r0, the reference speed r=115%*r0. In this embodiment, at least when the deviation angle is 0°, the correction coefficient is 1, and the reference rotational speed is equal to the preset reference rotational speed.

Step 12: After the real-time rotational speed satisfies the comfort control trigger condition, the comfort control process is executed, and the indoor fan is controlled to run at a target rotational speed higher than the real-time rotational speed.

Wherein, the comfort control trigger condition at least includes that the real-time rotational speed is not greater than the reference rotational speed. If the result of comparing the real-time rotational speed with the reference rotational speed in step 11 is that the real-time rotational speed is not greater than the reference rotational speed, then it is considered that operation at the real-time rotational speed will easily lead to insufficient indoor air circulation, and temperature stratification is likely to occur. In this case, the comfort control process is triggered. In some other preferred embodiments, the triggering condition for the comfort control further includes: the duration of the real-time rotational speed not being greater than the reference rotational speed reaches the reference time. That is, considering that the air circulation process is a gradual process, the comfort control process is not triggered immediately when the real-time speed is not greater than the reference speed, but when the real-time speed is not greater than the reference speed and continues for a period of time, and the duration reaches the reference time. Then, the comfort control process is triggered. The reference time can be a known, pre-stored time value that can be recalled by the controller at any time.

Execute the comfort control process, including at least controlling the indoor fan to run at a target speed higher than the real-time speed. As described above, if the real-time rotation speed is not greater than the reference rotation speed, it is considered that running at the real-time rotation speed will easily lead to insufficient indoor air circulation. In order to avoid the occurrence of temperature stratification in the indoor air caused by insufficient air circulation, after the comfort control trigger conditions are met, the comfort control process is executed, and the speed higher than the real-time speed is taken as the target speed, and the indoor fan is controlled to the target speed. run. Therefore, by forcibly increasing the target speed, the air outlet speed of the air outlet of the indoor unit can be increased through the increase of the fan speed, and the indoor air circulation can be accelerated, which effectively avoids the occurrence of indoor air during heating due to the reduction of the speed and the poor air circulation. The problem of poor heating comfort due to temperature stratification.

As a preferred embodiment, controlling the indoor fan to run at a target rotation speed higher than the real-time rotation speed specifically includes: controlling the indoor fan to run at a target rotation speed that is the maximum rotation speed allowed for heating operation. Furthermore, the air circulation speed is increased.

In some other preferred embodiments, the comfort control process further includes: adjusting the wind guiding angle of the air deflector of the indoor unit, so that the wind guided by the air deflector flows in a direction below the horizontal direction. For example, control the air guide angle of the air deflector to be a healthy downward blowing angle, so that the air is blown downward as much as possible, so as to blow the hot air to the ground, increase the circulation of indoor cold and hot air, and improve the ability to eliminate the stratification of cold and hot air. speed.

In some other preferred embodiments, when the air conditioner is in heating operation, the real-time frequency of the compressor of the air conditioner is also obtained, and the comfort control process may further include: controlling the compressor to operate at a target frequency higher than the real-time frequency. As a preferred embodiment, the compressor is controlled to operate at the maximum frequency allowed for the heating operation as the target frequency. The purpose of this processing is to force the indoor fan to run at a target speed higher than the real-time speed, and the outlet air temperature will decrease due to forcibly increasing the indoor fan speed, resulting in an unsuitable outlet air temperature. In order to solve this problem, when the indoor fan speed is forcibly increased, the target frequency of the compressor is also increased, and the outlet air temperature is increased by increasing the frequency.

Since the comfort control process is an unconventional control process that forces the rotational speed to increase, it is not a matter of entering and then not exiting. In some other preferred embodiments, the timing starts from entering the comfort control process, and after the timing time reaches a preset time, the comfort control process is exited. In the process of exiting the comfort control, the judgment of the trigger condition of the comfort control is continued, and after the trigger condition is satisfied, the comfort control process is performed again to form a loop control process. The preset time is also a known, pre-stored time value that can be recalled and used at any time. And, after exiting the comfort control process, the air conditioner transfers to the operating state before entering the comfort control process.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not 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 can still The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; 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 claimed in the present invention.

Claims (9)

1. A heating operation control method of an air conditioner, the method comprising:

the air conditioner is heated and operated, the real-time rotating speed of the indoor fan is obtained and compared with the reference rotating speed;

executing a comfort control process after the real-time rotating speed meets the comfort control triggering condition;

the comfort control trigger condition includes at least: the real-time rotating speed is not greater than the reference rotating speed;

the comfort control process includes at least: controlling the indoor fan to operate at a target rotating speed higher than the real-time rotating speed;

the method further comprises the following steps: the air conditioner is heated and operated, a real-time air guide angle of an air deflector of the indoor unit is obtained, and a deviation angle between the real-time air guide angle and a preset air guide angle of the air deflector is calculated; the preset air guide angle is the air guide angle of the air deflector when the air outlet volume of the air outlet of the indoor unit is maximum;

and determining a correction coefficient according to the corresponding relation between the deviation angle and a preset deviation angle and the correction coefficient, and determining the reference rotating speed according to the product of a preset reference rotating speed and the correction coefficient, so that the larger the deviation angle is, the larger the reference rotating speed is.

2. The method of claim 1, wherein the comfort control trigger condition further comprises: the duration that the real-time rotating speed is not more than the reference rotating speed reaches the reference time.

3. The method according to claim 1, wherein the controlling the indoor fan to operate at a target speed higher than the real-time speed specifically comprises: and controlling the indoor fan to operate by taking the maximum rotating speed allowed by heating operation as a target rotating speed.

4. The method of claim 1, wherein the comfort control process further comprises:

and adjusting the air guide angle of an air guide plate of the indoor unit so that the air guided by the air guide plate flows in the direction below the horizontal direction.

5. The method of claim 1, further comprising:

the air conditioner is heated and operated, and the real-time frequency of a compressor of the air conditioner is obtained;

the comfort control process further comprises: controlling the compressor to operate at a target frequency higher than the real-time frequency.

6. The method of claim 5, wherein controlling the compressor to operate at a target frequency higher than the real-time frequency comprises: and controlling the compressor to operate with the maximum frequency allowed by the heating operation as a target frequency.

7. The method of claim 1, further comprising: and starting timing from entering the comfort control process, exiting the comfort control process after the timing time reaches the preset time, and continuously executing the judgment of the comfort control triggering condition.

8. The method of claim 7, wherein after exiting the comfort control process, the air conditioner transitions to an operating state prior to entering the comfort control process.

9. The method according to claim 8, wherein the reference rotation speed is the preset reference rotation speed when the deviation angle is 0 °.

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