WO2019015536A1

WO2019015536A1 - Air conditioner control method

Info

Publication number: WO2019015536A1
Application number: PCT/CN2018/095664
Authority: WO
Inventors: 刘超超; 王彦生; 曾福祥; 黄素琴
Original assignee: 青岛海尔空调器有限总公司
Priority date: 2017-07-17
Filing date: 2018-07-13
Publication date: 2019-01-24
Also published as: CN107525210A

Abstract

An air conditioner control method comprises: if it is detected that there are no users in a room when an air conditioner is in an operating state, the air conditioner entering a vacant room mode; and after the air conditioner enters the vacant room mode, the control method adjusting the speed of an output airflow of the air conditioner to a maximum airflow speed. The method determines whether a user is in a room and automatically adjusts the airflow speed when there are no users is in the room, such that the ambient temperature of a room rapidly reaches a set temperature, thereby reducing energy consumption by the air conditioner without impacting the comfort of a user.

Description

Air conditioner control method

Technical field

The present invention relates to air conditioning technology, and more particularly to a method of controlling an air conditioner.

Background technique

In the process of using the air conditioner, the user selects the operating parameters (wind speed, set temperature, etc.) of the air conditioner according to the temperature he feels, but the user's subjective selection may not match the optimal running procedure of the air conditioner. It will cause the air conditioner to fail to reach the optimal operating state and affect the heat exchange efficiency of the air conditioner.

Summary of the invention

An object of the present invention is to provide a method of controlling an air conditioner to improve heat exchange efficiency of an air conditioner.

It is a further object of the present invention to enable the operating parameters of the air conditioner to be adjusted according to the real-time status of the user to improve user comfort.

Another further object of the invention is to reduce the energy loss of the operation of the air conditioner.

In particular, the present invention provides a method of controlling an air conditioner, comprising:

When the air conditioner is in an operating state and detecting that there is no user in the room, the air conditioner enters an unmanned mode;

The control method after the air conditioner enters the unmanned mode includes adjusting an air outlet speed of the air conditioner to a maximum wind speed.

Further, the control method further includes:

And when the air conditioner is in an operating state, detecting that a user exists in the room, acquiring a distance between the target user closest to the air conditioner and the air conditioner, and adjusting according to the distance between the target user and the air conditioner The wind speed of the wind.

Further, the control method further includes:

Maintaining the current wind speed of the air conditioner when the distance between the target user and the air conditioner is less than or equal to the first distance;

Adjusting the wind speed to the highest wind speed when a distance between the target user and the air conditioner is greater than or equal to a second distance;

When the distance between the target user and the air conditioner is between the first distance and the second distance, the wind speed is increased by one gear, if the current wind speed is already The maximum wind speed is unchanged.

Further, the control method further includes:

When the air conditioner operates in the cooling mode and is in the unmanned mode, the air outlet direction of the air conditioner is horizontally upward, and the opening degree of the air outlet is maximized;

When the air conditioner operates in the heating mode and is in the unmanned mode, the air outlet direction of the air conditioner is horizontally downward, and the opening degree of the air outlet is maximized.

Further, the air conditioner has a variable frequency compressor, and the control method further includes:

When the outlet wind speed is the maximum wind speed and the opening degree of the air outlet is the maximum opening degree, the operating frequency of the compressor is lowered by one step.

Further, the control method further includes:

Obtaining an indoor ambient temperature and a set temperature of the air conditioner; and

After the operating frequency of the compressor is decreased by one gear, if the indoor ambient temperature reaches the set temperature within a preset first time, the operating frequency of the compressor is pre-interval The set adjustment time is reduced by a preset adjustment frequency until the operating frequency falls to a preset limited frequency.

Further, the defined frequency is an operating frequency of the compressor when its suction superheat is the first temperature.

Further, the control method further includes:

After the operating frequency of the compressor is decreased by one gear, if the indoor ambient temperature does not reach the set temperature within a preset first time, the compressor remains in the first gear after the first gear is lowered. Operating frequency.

Further, the control method further includes:

When the indoor ambient temperature is continuously maintained at the set temperature for a preset second time, the compressor is stopped, and the outlet wind speed and the opening of the air outlet are restored to a preset value of the user.

Further, the control method further includes:

After the compressor is stopped, when the indoor ambient temperature continuously deviates from the set temperature for a preset third time, the air conditioner restarts operation at the operating frequency before the compressor is stopped.

The control method of the invention can automatically adjust the wind speed according to the presence state of the indoor user, and the indoor air temperature can quickly reach the set temperature, thereby saving the energy loss of the air conditioner without affecting the user's use. Comfort.

Further, the control method of the present invention controls the air conditioner to adjust the wind speed according to the distance between the target user and the air conditioner that is closest to the air conditioner, thereby ensuring that all users in the room have better comfort.

Further, the control method of the present invention can adjust the operating frequency of the compressor in real time while ensuring that the inverter air conditioner supplies sufficient cooling/heat to the indoor, thereby enabling the inverter air conditioner to achieve better heat exchange effect at the same time and Low energy loss.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention will be described in detail, by way of example, and not limitation, The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:

1 is a schematic flow chart of a control method according to an embodiment of the present invention;

2 is a schematic flow chart of a control method according to another embodiment of the present invention;

3 is a control method of an air conditioner operating in a cooling mode according to an embodiment of the present invention;

4 is a control method of an air conditioner operating in a heating mode according to an embodiment of the present invention.

Detailed ways

The control method of the present invention can be used to optimize the operating state of the air conditioner. Specifically, the control method can optimize the operating state of the air conditioner according to the user state in the space in which the air conditioner is located, the ambient temperature of the space in which the air conditioner is located, and the set temperature of the air conditioner set by the user.

1 is a schematic flow chart of a control method in accordance with one embodiment of the present invention. Referring to Figure 1, the control method includes:

In step S100, the air conditioner is turned on.

In step S102, it is detected whether there is a user in the room; if yes, step S104 is performed, and if no, step S112 is performed.

Step S104: Acquire a location of the user and determine whether the distance between the user and the air conditioner is less than the first distance; if yes, execute step S106; if no, execute step S108.

In step S106, the operating wind speed of the fan remains unchanged.

In step S108, it is determined whether the distance between the user and the air conditioner is less than the second distance; if yes, step S110 is performed, and if no, step S112 is performed.

In step S110, the operating wind speed of the fan is increased by one gear.

In step S112, the operating wind speed of the fan is adjusted to the highest wind speed.

That is, when the air conditioner is in an operating state and it is detected that there is no user in the room, the air conditioner enters the unmanned mode. The control method after the air conditioner enters the unmanned mode includes adjusting the air outlet speed of the air conditioner to the highest wind speed. In step S112, if the current operating wind speed of the fan has reached the maximum wind speed, the fan is maintained at the highest wind speed. The control method can automatically adjust the wind speed according to the presence state of the indoor user, and the indoor ambient temperature can quickly reach the set temperature without affecting the user's use comfort.

In some embodiments of the present invention, the control method further includes acquiring a distance between the target user closest to the air conditioner and the air conditioner when the user is detected to be present in the indoor state when the air conditioner is in an operating state, and according to the target user and the air conditioner The distance is adjusted to the wind speed. Since the user closest to the air conditioner is most affected by the air supply of the air conditioner, the nearest user is identified as the target user, and the wind speed is adjusted according to the distance between the target user and the air conditioner to ensure that all users in the room have better Comfort.

Further, the second distance in step S108 is farther than the first distance in step S104. When the distance between the target user and the air conditioner is less than the first distance, the current wind speed of the air conditioner is maintained. When the distance between the target user and the air conditioner is greater than or equal to the second distance, the wind speed is adjusted to the highest wind speed. When the distance between the target user and the air conditioner is between the first distance and the second distance (including equal to the first distance), the wind speed is increased by one gear, and if the current wind speed is already the highest wind speed, then change.

Thus, the control method can be such that when the user is located relatively close to the air conditioner (the air conditioner is less than the first distance), the air conditioner does not automatically adjust the wind speed to avoid noise and affect the user's comfort. When the user is located slightly away from the air conditioner (the air conditioner is less than the second distance but reaches the first distance or more), the air conditioner appropriately adjusts the wind speed to increase the first running wind speed. At this time, due to the buffer space between the air conditioner and the user, only adjusting the wind speed appropriately does not cause the air conditioner to generate obvious noise or a strong wind sensation, thereby preventing the user from detecting that the air conditioner is blown to the environment. The transformation of the heat exchange flow of air. At the same time, due to the increase of the wind speed, the amount of cooling that is blown out from the air conditioner to the indoor unit per unit time is increased, and the cooling capacity of the air conditioner is prevented from accumulating in the air conditioner, thereby improving the cooling efficiency. When the user is far away from the air conditioner (the distance between the air conditioner and the second distance is greater than or equal to the second distance), the indoor room can be regarded as equivalent to the unmanned person, and the heat exchange airflow blown by the air conditioner has no direct contact with the user, only through the temperature of the ambient air and / or humidity changes, so that the air conditioner can increase the amount of heat exchange airflow by increasing the wind speed, so that the room can achieve rapid heat exchange.

In some embodiments of the invention, the first distance and the second distance may be specifically set according to the number of horses or the heat exchange capacity of the air conditioner. The first distance may be any value between 1 and 2 meters, for example 1 meter, 1.5 meters or 2 meters. The second distance may be any value between 2 meters and 4 meters, for example 2 meters, 3 meters or 4 meters. Preferably, the first distance and the second distance may have a difference of 1 meter to 2 meters, for example the first distance may preferably be 1.5 meters, and the second distance may preferably be 3 meters.

In some embodiments of the present invention, the operating wind speed of the air conditioner is adjusted by the speed of the fan set therein, and the operating wind speed is increased by one step, and the fan can increase the speed by any speed between 100 r/min and 200 r/min. value.

In some embodiments of the present invention, when the air conditioner is in the cooling mode or the heating mode, the air outlet direction and the air outlet opening of the air outlet can be controlled accordingly.

Specifically, referring to step S200 and step S202, when the air conditioner operates in the cooling mode and is in the unmanned mode, the air outlet direction of the air conditioner is horizontally upward, and the opening degree of the air outlet is maximized. Referring to step S300 and step S302, when the air conditioner operates in the heating mode and is in the unmanned mode, the air outlet direction of the air conditioner is horizontally downward, and the opening degree of the air outlet is maximized. The direction of the air outlet and the opening of the air outlet can be controlled by the opening angle of the air deflector at the air outlet of the air conditioner. Thereby, the heating air is blown downward or the refrigerating air is blown upward to promote the cold air of the original temperature in the room or the hot air and the heat exchange airflow with high temperature to circulate rapidly, and the heat exchange airflow and the indoor are increased. The heat exchange rate of the air makes the indoor temperature quickly reach the set temperature, thereby reducing the energy loss of the air conditioner and enhancing the heat exchange effect of the air conditioner.

Step S202 or step 302 can be performed in synchronization with step S112.

In some embodiments of the present invention, the air conditioner has a variable frequency compressor, and the control method further includes reducing the operating frequency of the compressor by one gear when the wind speed is the highest wind speed and the wind is the maximum opening degree, Reduce the energy consumption of compressor operation.

2 is a schematic flow chart of a control method according to another embodiment of the present invention. Specifically, referring to FIG. 2, the control method further includes:

In step S114, the operating frequency of the compressor is lowered by one step.

Step S116, continuously detecting the indoor ambient temperature and the set temperature of the air conditioner, and determining whether the indoor ambient temperature reaches the set temperature within a preset first time; if yes, executing step S120; if not, executing step S118.

In step S118, the compressor maintains the operating frequency after the first gear is lowered, and the fan supplies the air until the indoor ambient temperature reaches the set temperature.

In step S120, the compressor reduces its operating frequency by a preset adjustment frequency every interval of one adjustment period until its operating frequency falls to a limited frequency, or until the indoor ambient temperature cannot be maintained at the set temperature.

Step S122, when the indoor ambient temperature does not deviate from the set temperature for a second time, the compressor stops running, the heat exchanger and the fan also stop running, and the air outlet direction and the opening degree of the air outlet are restored to the preset of the user. value.

In step S124, when the indoor ambient temperature continuously deviates from the set temperature for the third time, the compressor restarts and continues to operate at the operating frequency before the stop operation.

That is, the higher outlet speed and the larger opening of the air outlet can increase the air volume of the air conditioner, thereby increasing the amount of cooling or heat provided by the air conditioner for the room. Therefore, when the air conditioner is an inverter air conditioner, since the heat exchange amount can meet the requirement of indoor heat exchange, the operating frequency of the air conditioner can be appropriately reduced to reduce the energy loss of the air conditioner operation.

In step S114, the difference between the operating frequency and the operating frequency of the previous or next gear may be any value between 0.5 Hz and 5 Hz.

In step S116, the value of the first time may be determined by the indoor ambient temperature and the set temperature of the air conditioner. Specifically, the calculation formula of the first time is:

t ₁ =(Tr-Ts)*(log(Tr)-1)*10;

Where t ₁ is the first time, Tr is the indoor ambient temperature, and Ts is the set temperature of the air conditioner. Specifically, t ₁ is a numerical value in minutes, and Tr and Ts are numerical values in degrees Celsius. Therefore, the specific value of the first time can be dynamically adjusted according to the current operating state of the air conditioner and the indoor ambient temperature, so that the adjustment of the operating parameters such as the air outlet speed and the air volume of the air conditioner is more timely and accurate.

In step S120, the adjustment period may be any value between 8 min and 12 min, and the adjustment frequency may be any value between 0.3 and 0.7 Hz. That is, when the air conditioner performs step S120, the operating frequency of the compressor can be reduced by 0.5 Hz every 10 minutes to ensure that the compressor operates at the lowest possible operating frequency while ensuring the heat exchange efficiency of the air conditioner, thereby reducing The energy consumption of air conditioning operation.

In step S122, the second time may be any value between 8 min and 12 min. For example, it may be a value of 8 min, 9 min, 10 min, 11 min or 12 min. In some embodiments of the invention, the second time may preferably be 10 min. That is, when the indoor ambient temperature continues to meet the set temperature within 10 min, the air conditioner then enters the standby mode, the compressor and the fan stop running, and the air deflector returns to the user preset state, so that the air outlet direction and the air outlet are made. The opening degree is restored to the preset value of the user, so that the air conditioner can supply air according to the preset parameter of the user when the air conditioner is started up next time.

In step S124, the third time may be any value between 4 min and 6 min.

Further, after the operating frequency of the compressor is lowered by one gear, if the indoor ambient temperature reaches the set temperature within the preset first time, the compressor is lowered by a preset adjustment time every preset adjustment time, Until the operating frequency drops to a preset limit frequency or the indoor ambient temperature fails to reach the set temperature within the adjustment time. That is, when the air conditioner cannot meet the heat exchange demand of the room due to the low operating frequency of the compressor, the compressor can timely adjust its operating frequency back to the lowest operating frequency that can meet the heat exchange demand before, and keep the Operating frequency. Thereby, the operating frequency of the air conditioner can be dynamically adjusted to the operating frequency with the best heat exchange effect and the lowest energy consumption.

In some embodiments of the present invention, the condition that the indoor ambient temperature reaches the set temperature may be a range in which the indoor ambient temperature is between 1 ° C and 3 ° C above and below the set temperature, for example, may exceed or fall below the set temperature. 1 ° C, 2 ° C or 3 ° C and so on. When the temperature range is set to 2 ° C above and below the set temperature, if the indoor ambient temperature is neither higher than the set temperature by 2 ° C nor lower than the set temperature by 2 ° C, then the ambient temperature is determined to be (satisfied). Set the temperature. Correspondingly, the determination condition that the indoor ambient temperature deviates from the set temperature at this time may be that the difference (absolute value) between the indoor ambient temperature and the set temperature is greater than or equal to 2 °C.

In some embodiments of the invention, the defined frequency is the lowest operating frequency at which the compressor is allowed to operate. The defined frequency may be the operating frequency of the compressor when its suction superheat is at the first temperature. Specifically, the defined frequency may be an operating frequency of the compressor when the suction superheat of the compressor is between 2 ° C and 5 ° C (ie, the range of the first temperature), thereby enabling the air conditioner to obtain Higher work efficiency.

Further, in order to prevent the heat exchange effect from being affected after the operating frequency of the air conditioner is lowered, after the operating frequency of the compressor is first lowered by one gear, if the indoor ambient temperature does not reach the set temperature within the preset first time, the compressor Maintain the current operating frequency until the indoor ambient temperature reaches the set temperature to meet the indoor heat transfer requirements.

Further, when the indoor ambient temperature is continuously maintained at the set temperature for a preset second time, the compressor is stopped, and the outlet wind speed and the opening of the air outlet are restored to the preset value of the user. After the compressor is stopped, when the indoor ambient temperature continues to deviate from the set temperature for a preset third time, the air conditioner restarts the operation at the operating frequency before the compressor is stopped.

That is, after the air conditioner completes the cooling/heating of the room at a lower operating frequency under the adjustment control of the control method, the compressor can enter the shutdown state, and the control module such as the main control board of the air conditioner can The operating frequency of the compressor before entering the shutdown state is acquired and recorded, so that after the indoor ambient temperature deviates from the set temperature, the operation is restarted directly at the operating frequency before the stop/standby, and no additional time is needed for re-adjustment, thereby ensuring the change of the air conditioner. Thermal efficiency and low energy consumption.

In this regard, it will be appreciated by those skilled in the <RTIgt;the</RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Therefore, the scope of the invention should be understood and construed as covering all such other modifications or modifications.

Claims

A method of controlling an air conditioner, comprising:

When the air conditioner is in an operating state and detecting that there is no user in the room, the air conditioner enters an unmanned mode;

The control method after the air conditioner enters the unmanned mode includes adjusting an air outlet speed of the air conditioner to a maximum wind speed.
The control method according to claim 1, further comprising:

And when the air conditioner is in an operating state, detecting that a user exists in the room, acquiring a distance between the target user closest to the air conditioner and the air conditioner, and adjusting according to the distance between the target user and the air conditioner The wind speed of the wind.
The control method according to claim 2, further comprising:

Maintaining the current wind speed of the air conditioner when the distance between the target user and the air conditioner is less than or equal to the first distance;

Adjusting the wind speed to the highest wind speed when a distance between the target user and the air conditioner is greater than or equal to a second distance;

When the distance between the target user and the air conditioner is between the first distance and the second distance, the wind speed is increased by one gear, if the current wind speed is already The maximum wind speed is unchanged.
The control method according to claim 3, further comprising:

When the air conditioner operates in the cooling mode and is in the unmanned mode, the air outlet direction of the air conditioner is horizontally upward, and the opening degree of the air outlet is maximized;

When the air conditioner operates in the heating mode and is in the unmanned mode, the air outlet direction of the air conditioner is horizontally downward, and the opening degree of the air outlet is maximized.
The control method according to claim 4, wherein the air conditioner has a variable frequency compressor, and the control method further comprises:

When the outlet wind speed is the maximum wind speed and the opening degree of the air outlet is the maximum opening degree, the operating frequency of the compressor is lowered by one step.
The control method according to claim 5, further comprising:

Obtaining an indoor ambient temperature and a set temperature of the air conditioner; and

After the operating frequency of the compressor is decreased by one gear, if the indoor ambient temperature reaches the set temperature within a preset first time, the operating frequency of the compressor is pre-interval The set adjustment time is reduced by a preset adjustment frequency until the operating frequency falls to a preset limited frequency.
The control method according to claim 6, wherein

The defined frequency is an operating frequency of the compressor when its suction superheat is at a first temperature.
The control method according to claim 6, further comprising:

After the operating frequency of the compressor is decreased by one gear, if the indoor ambient temperature does not reach the set temperature within a preset first time, the compressor remains in the first gear after the first gear is lowered. Operating frequency.
The control method according to claim 6, further comprising:

When the indoor ambient temperature is continuously maintained at the set temperature for a preset second time, the compressor is stopped, and the outlet wind speed and the opening of the air outlet are restored to a preset value of the user.
The control method according to claim 9, further comprising:

After the compressor is stopped, when the indoor ambient temperature continuously deviates from the set temperature for a preset third time, the air conditioner restarts operation at the operating frequency before the compressor is stopped.