WO2024027129A1

WO2024027129A1 - Control method and apparatus for air conditioner overheat protection, and air conditioner

Info

Publication number: WO2024027129A1
Application number: PCT/CN2023/075947
Authority: WO
Inventors: 赵江龙; 张乃伟
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2022-08-01
Filing date: 2023-02-14
Publication date: 2024-02-08
Also published as: CN115540196A; CN115540196B

Abstract

The present application relates to the air conditioning technology, and provides a control method and apparatus for air conditioner overheat protection, and an air conditioner. The control method comprises: acquiring a first temperature of an evaporator in an indoor unit of an air conditioner, a first mode of an air deflector in the indoor unit, and a first rotation speed of a fan in the indoor unit; if it is determined that the first temperature is greater than or equal to a preset threshold, adjusting the mode of the air deflector and the rotation speed of the fan according to the first mode and the first rotation speed, and acquiring a second temperature of the evaporator; and if it is determined that the second temperature is greater than or equal to the preset threshold, starting a preset overheat protection mechanism. The present solution provides an overheat protection control method capable of improving the heating effect of air conditioners to a certain extent. After the temperature of the evaporator reaches a set temperature, firstly, by adjusting the rotation speed of the fan and the mode of the air deflector, hot air blown out by the air conditioner can better exchange heat with indoor cold air, then the temperature of the evaporator is collected, and the overheat protection mechanism is started after the temperature reaches the set temperature.

Description

Control method, device and air conditioner for overheating protection of air conditioner

This application claims priority to the Chinese patent application filed with the China Patent Office on August 1, 2022, with the application number 202210916926. incorporated in this application.

Technical field

The embodiments of the present application belong to the technical field of air conditioning, and specifically relate to a control method and device for air conditioning overheat protection and an air conditioner.

Background technique

At present, the use of air conditioners is becoming more and more popular in people's daily lives. During the heating process of the air conditioner, because the hot air will automatically rise, the hot air will accumulate in the upper part of the room. However, the on-hook air conditioner is usually hung at a relatively high position, which will cause the hot air to keep circulating in the upper part of the room, and the air conditioner will enter the room. The temperature is high and the outlet air temperature is higher. If the indoor unit temperature of the air conditioner is too high, it will affect the normal use of the air conditioner.

In the prior art, when the temperature of the evaporator in the indoor unit is detected to reach the set temperature, the frequency of the compressor is reduced to ensure that the indoor unit does not affect the normal use of the air conditioner due to excessive temperature.

However, in the above method, when the temperature of the evaporator reaches the set temperature, the hot air only circulates in the upper part of the room, which cannot achieve the required heating effect for the whole house, resulting in poor heating effect.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, that is, in the prior art, when the temperature of the evaporator reaches the set temperature, the hot air only circulates in the upper part of the room, which cannot achieve the required heating effect of the whole house, resulting in heating failure. To solve the problem of poor performance, embodiments of the present application provide a control method, device and air conditioner for overheating protection of air conditioners.

In a first aspect, embodiments of the present application provide a control method for air conditioner overheat protection, including:

Obtaining the first temperature of the evaporator in the indoor unit of the air conditioner, the first mode of the air guide plate in the indoor unit, and the first rotation speed of the fan in the indoor unit;

If it is determined that the first temperature is greater than or equal to the preset threshold, adjust the mode of the air guide plate and the rotation speed of the fan according to the first mode and the first rotation speed, and obtain the evaporation The second temperature of the device;

If it is determined that the second temperature is greater than or equal to the preset threshold, the preset overheat protection mechanism is activated.

In a preferred technical solution of the above control method for air conditioner overheat protection, the mode of the air guide plate and the rotation speed of the fan are adjusted according to the first mode and the first rotation speed, and the rotation speed of the fan is obtained. The second temperature of the evaporator, including:

If it is determined that the first rotational speed is less than the preset maximum rotational speed of the fan, adjust the rotational speed of the fan to the preset maximum rotational speed;

After the first time, obtain a third temperature of the evaporator;

If it is determined that the third temperature is less than the preset threshold, adjust the rotation speed of the fan to the first rotation speed;

or,

If it is determined that the third temperature is greater than or equal to the preset threshold, and it is determined that the first mode is not a down-blowing mode, adjust the mode of the air guide plate to a down-blowing mode;

After the second time, obtain a fourth temperature of the evaporator;

The method further includes: if it is determined that the fourth temperature is less than the preset threshold, restoring the mode of the air guide plate to the first mode.

In a preferred technical solution of the above control method for air conditioner overheat protection, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first speed is equal to the preset maximum speed, and it is determined that the first If the first mode is not the down-blowing mode, adjust the mode of the air guide plate to the down-blowing mode;

After the second time, obtain a fifth temperature of the evaporator;

If it is determined that the fifth temperature is less than the preset threshold, then restore the mode of the air guide plate to the first mode;

or,

If it is determined that the fifth temperature is greater than or equal to the preset threshold, the preset overheat protection mechanism is activated.

In the preferred technical solution of the above control method for air conditioner overheat protection, if it is determined that the first temperature is greater than or equal to a preset threshold, and it is determined that the first speed is equal to the preset maximum speed, and it is determined that the first mode In the down-blowing mode, the preset overheating protection mechanism is activated.

In a preferred technical solution of the above control method for air conditioner overheat protection, the mode of the air guide plate and the rotation speed of the fan are adjusted according to the first mode and the first rotation speed, and the rotation speed of the fan is obtained. The second temperature of the evaporator also includes:

If it is determined that the first mode is not the down-blowing mode, adjust the mode of the air guide plate to the down-blowing mode;

After the third time, obtain a sixth temperature of the evaporator;

If it is determined that the sixth temperature is less than the preset threshold, then restore the mode of the air guide plate to the first mode;

or,

If it is determined that the sixth temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is less than the preset maximum rotational speed of the fan, then adjust the rotational speed of the fan to the preset maximum rotational speed;

After the fourth time, obtain the seventh temperature of the evaporator;

The method further includes: if it is determined that the seventh temperature is less than the preset threshold, restoring the mode of the air guide plate to the first mode.

In a preferred technical solution of the above control method for air conditioner overheat protection, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is less than the preset maximum rotational speed, and it is determined that the third If the first mode is the downward blowing mode, the speed of the fan is adjusted to the preset maximum speed;

After the fourth time, the eighth temperature of the evaporator is obtained; if it is determined that the eighth temperature is greater than or equal to the preset threshold, the preset overheating protection mechanism is activated.

In a preferred technical solution of the above control method for air conditioner overheat protection, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first speed is equal to the preset maximum speed, and it is determined that the first If the first mode is the down-blowing mode, the preset overheating protection mechanism is activated.

In the preferred technical solution of the above control method for overheating protection of air conditioners, the preset overheating protection mechanism includes one or several combinations of the following: reducing the frequency of the compressor in the outdoor unit of the air conditioner; controlling the frequency of the compressor in the outdoor unit of the air conditioner; The throttling device opens the valve.

In a second aspect, embodiments of the present application provide a control device for air conditioner overheat protection, including:

An acquisition unit configured to acquire the first temperature of the evaporator in the indoor unit of the air conditioner, the first mode of the air guide plate in the indoor unit, and the first rotation speed of the fan in the indoor unit;

an adjustment unit configured to adjust the mode of the air guide plate and the rotation speed of the fan according to the first mode and the first rotation speed if it is determined that the first temperature is greater than or equal to the preset threshold, and obtain the second temperature of the evaporator;

A starting unit configured to start a preset overheat protection mechanism if it is determined that the second temperature is greater than or equal to a preset threshold.

In a third aspect, embodiments of the present application provide an air conditioner, including: a processor, a memory, and computer program instructions stored in the memory and executable on the processor. When the processor executes the computer program instructions, Methods provided for implementing the first aspect and possible designs in the first aspect.

In a fourth aspect, embodiments of the present application may provide a computer-readable storage medium, which stores computer-executable instructions. When executed by a processor, the computer-executable instructions are used to implement the first aspect and the Methods provided by each possible design in the first aspect.

In a fifth aspect, embodiments of the present application provide a computer program product, including a computer program, which when executed by a processor is used to implement the first aspect and the methods provided by each possible design in the first aspect.

Those skilled in the art can understand that the control method, device and air conditioner for air conditioner overheat protection provided by the embodiments of the present application are. In this method, the first temperature of the evaporator in the indoor unit of the air conditioner, the air guide plate in the indoor unit are obtained. the first mode and the first speed of the fan in the indoor unit; if it is determined that the first temperature is greater than or equal to the preset threshold, adjust the mode of the air guide plate and the speed of the fan according to the first mode and the first speed, And obtain the second temperature of the evaporator; if it is determined that the second temperature is greater than or equal to the preset threshold, the preset overheating protection mechanism is activated. This application provides an overheating protection control method that can improve the heating effect of air conditioning to a certain extent. After detecting that the evaporator temperature reaches the set temperature, first adjust the fan speed and the air guide mode to make the air conditioner blow out Better heat exchange between hot air and indoor cold air can improve the heating effect of the air conditioner to a certain extent. Then, the temperature of the evaporator is collected, and when the temperature reaches the set temperature, the overheating protection mechanism is activated.

Description of the drawings

The control method, device and air conditioner for air conditioner overheat protection of the present application will be described below with reference to the accompanying drawings, which are:

Figure 1 is a schematic diagram of the scene of the air conditioner in the heating mode provided by the embodiment of the present application;

Figure 2 is a schematic flowchart of Embodiment 1 of the control method for air conditioner overheat protection provided by the embodiment of the present application;

Figure 3 is a schematic flow chart of Embodiment 2 of the control method for overheating protection of air conditioners provided by the embodiment of the present application;

Figure 4 is a schematic structural diagram of Embodiment 1 of a control device for air conditioning overheat protection provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of Embodiment 2 of a control device for air conditioning overheat protection provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of an air conditioner provided by an embodiment of the present application.

Detailed ways

First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application. Those skilled in the art can make adjustments as needed to adapt to specific application situations.

Secondly, it should be noted that in the description of the embodiments of the present application, the terms "inner", "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for convenience. The description does not indicate or imply that the device or component must have a particular orientation, be constructed and operate in a particular orientation, and therefore is not to be construed as a limitation on the present application.

In addition, it should be noted that in the description of the embodiments of the present application, unless otherwise clearly stated and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. to be detachably connected, or to be connected in one piece; may be mechanical A connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

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

Before introducing the embodiments of the present application, the application background of the embodiments of the present application is first explained:

In people's daily life, the use of air conditioners is becoming more and more popular. During the heating process of the air conditioner, since the hot air will automatically rise, the hot air will accumulate in the upper part of the room when the air deflector of the air conditioner automatically swings up and down. The on-hook air conditioner is usually hung at a relatively high position, which will cause As a result, hot air has been circulating in the upper part of the room, the inlet air temperature of the air conditioner is high, and the outlet air temperature is even higher. Such circulation will cause hot air to circulate in the upper part of the room as shown in Figure 1, and users will not experience the heating effect. Moreover, if the indoor unit temperature of the air conditioner is too high, it will affect the normal use of the air conditioner.

In the prior art, when it is detected that the temperature of the evaporator in the indoor unit reaches the set temperature, the frequency of the compressor will be reduced to ensure that the indoor unit will not affect the normal use of the air conditioner due to excessive temperature.

However, this method will further affect the heating effect.

In response to the above problems, the inventive concept of the present application is as follows: after detecting that the temperature of the evaporator reaches the set temperature, first by adjusting the speed of the fan and the mode of the air guide plate, the hot air blown by the air conditioner and the indoor cold air can be better matched Heat exchange can improve the heating effect of air conditioners to a certain extent. Then, the temperature of the evaporator is collected, and when the temperature reaches the set temperature, the overheating protection mechanism is activated. This application provides an overheating protection control method that can improve the heating effect of air conditioning to a certain extent.

Below, the technical solution of the present application will be described in detail through specific embodiments.

It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

FIG. 2 is a schematic flowchart of Embodiment 1 of the control method for air conditioner overheat protection provided by the embodiment of the present application. As shown in Figure 2, the control method of the air conditioner overheat protection may include the following steps:

Step 201: Obtain the first temperature of the evaporator in the indoor unit of the air conditioner, the first mode of the air guide plate in the indoor unit, and the first rotation speed of the fan in the indoor unit.

Among them, the method provided by this application can be performed by an air conditioner. The air conditioner can be a hanging air conditioner or a vertical air conditioner with a horizontal air deflector. The air conditioner can obtain the current first temperature of the evaporator in the indoor unit, the current first mode of the air guide plate in the indoor unit, and the current first speed of the fan in the indoor unit.

Specifically, a temperature sensor in the evaporator can be used to collect the average value of the evaporator surface temperature, and the average value is used as the first temperature of the evaporator.

Among them, there are one or two long injection molded parts at the air outlet of the indoor unit of the air conditioner. This is the air guide plate. The air deflector can be used to control the air outlet angle and can also set the high and low air sweep. There are generally five modes of air deflectors, including: upward blowing mode (controlling the wind to blow upward), downward blowing mode (controlling the wind to blow downward), middle mode (controlling the wind to blow toward the middle), and upper-middle mode (controlling the wind to blow downward). Blowing diagonally upward), lower-middle mode (controlling the wind to blow diagonally downward).

Specifically, in the air conditioning and heating mode, the fan in the indoor unit can be used to blow the hot air around the evaporator into the room to implement forced convection, causing the indoor temperature to rise, thereby achieving the purpose of regulating the indoor air temperature. Among them, the faster the fan rotates, the greater the air volume generated, and under the same conditions, the indoor temperature will rise faster.

Step 202: If it is determined that the first temperature is greater than or equal to the preset threshold, adjust the mode of the air guide plate and the rotation speed of the fan according to the first mode and the first rotation speed, and obtain the second temperature of the evaporator.

The preset threshold is a temperature value preset according to actual conditions, for example, it can be set to 58 degrees Celsius.

Specifically, if it is determined that the currently collected first temperature of the evaporator is greater than or equal to the preset threshold, then the air guide can be adjusted first through the currently collected first mode of the air guide plate and the currently collected first speed of the fan. The mode of the panel and the speed of the fan are used to achieve the purpose of strengthening indoor air circulation, so that hot air not only circulates in the upper part of the room, but also makes the whole house meet the heating requirements as much as possible, thereby improving the heating effect of the air conditioner.

Specifically, because hot air will automatically flow upward, you can use the downward blowing mode of the air deflector to blow the wind downward to strengthen indoor air circulation; you can increase the fan speed to Provides heat circulation and supplementary air, thereby enhancing indoor air circulation.

Specifically, after adjusting the mode of the air guide plate and the speed of the fan for a period of time, the second temperature of the evaporator can be collected.

Step 203: If it is determined that the second temperature is greater than or equal to the preset threshold, a preset overheating protection mechanism is activated.

Among them, the preset overheat protection mechanism is a preset overheat protection mechanism for the air conditioner indoor unit. The preset overheating protection mechanism refers to some mechanisms to ensure that the indoor unit will not affect the normal use of the air conditioner due to excessive temperature. For example, this mechanism can be to reduce the frequency of the compressor in the air conditioner. Specifically, there is no limit to the preset overheating protection mechanism in this solution. Specifically, reducing the frequency of the compressor can lower the temperature of the evaporator, thereby ensuring that the indoor unit will not affect the normal use of the air conditioner due to excessive temperature.

Specifically, after adjusting the mode of the air guide plate and the speed of the fan for a period of time, the collected second temperature of the evaporator can be compared with the preset threshold. If it is determined that the second temperature is greater than or equal to the preset threshold, the preset temperature will be started. Set overheating protection mechanism.

Further, if it is determined that the second temperature is less than the preset threshold, the preset overheat protection mechanism is not activated, and step 201 is continued.

The control method for air conditioner overheat protection provided by this application includes: obtaining the first temperature of the evaporator in the indoor unit of the air conditioner, the first mode of the air guide plate in the indoor unit, and the first speed of the fan in the indoor unit; if the first If the temperature is greater than or equal to the preset threshold, adjust the mode of the air guide and the rotation speed of the fan according to the first mode and the first rotation speed, and obtain the second temperature of the evaporator; if it is determined that the second temperature is greater than or equal to the preset If the threshold is set, the preset overheating protection mechanism will be activated. In the method provided by this solution, after detecting that the temperature of the evaporator reaches the set temperature, you can first adjust the speed of the fan and the mode of the air guide plate to allow better heat exchange between the hot air blown by the air conditioner and the cold indoor air. It can improve the heating effect of air conditioner to a certain extent. Then, the temperature of the evaporator is collected, and when the temperature reaches the set temperature, the overheating protection mechanism is activated. This solution provides an overheating protection control method that can improve the heating effect of air conditioning to a certain extent.

Figure 3 is a schematic flowchart of Embodiment 2 of the control method for air conditioner overheat protection provided by the embodiment of the present application. As shown in Figure 3, the control method of the air conditioner overheat protection may include the following steps:

Step 301: Obtain the first temperature of the evaporator in the indoor unit of the air conditioner, the first mode of the air guide plate in the indoor unit, and the first rotation speed of the fan in the indoor unit.

Specifically, the principles and implementation methods of step 301 and step 201 are similar and will not be described again.

Specifically, after step 301, step 302A or step 302B may be performed.

Step 302A, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is less than the preset maximum rotational speed of the fan, then adjust the rotational speed of the fan to the preset maximum rotational speed; after the first time, obtain the The third temperature.

Among them, the preset maximum speed is the maximum speed of the fan that is preset according to the actual situation.

The first time is a time length value preset according to the actual situation.

Specifically, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first speed is less than the preset maximum speed of the fan, then the speed of the fan can be adjusted first, and the speed of the fan can be adjusted from the current first speed to the preset speed. The highest speed, thereby increasing the air volume and strengthening indoor air circulation. And after the first time has elapsed, the collected third temperature of the evaporator is obtained.

Step 303, if it is determined that the third temperature is less than the preset threshold, adjust the fan speed to the first speed; or, if it is determined that the third temperature is greater than or equal to the preset threshold, and it is determined that the first mode is not the down-blowing mode, then The mode of the air guide plate is adjusted to the downward blowing mode; after the second time, the fourth temperature of the evaporator is obtained.

Wherein, the second time is a time length value preset according to the actual situation.

Specifically, the third temperature of the evaporator is compared with the preset threshold. If it is determined that the third temperature is less than the preset threshold, the rotation speed of the fan is adjusted from the preset maximum rotation speed to the original first rotation speed. Then, continue to step 301.

Or, if it is determined that the third temperature is greater than or equal to the preset threshold, and it is determined that the first mode is not the down-blowing mode, then the mode of the air guide plate is adjusted, and the mode of the air guide plate is adjusted from the current first mode to the down-blowing mode. mode; thereby causing the wind to blow downward to enhance indoor air circulation. And after the second time has elapsed, the collected fourth temperature of the evaporator is obtained.

Step 304: If it is determined that the fourth temperature is less than the preset threshold, the mode of the air guide plate is restored to the first mode; or, if it is determined that the fourth temperature is greater than or equal to the preset threshold, a preset overheating protection mechanism is activated.

Specifically, the fourth temperature of the evaporator is compared with the preset threshold. If it is determined that the fourth temperature is less than the preset threshold, the mode of the air guide plate is restored from the downward blowing mode to the original first mode. At this time, the fan speed still remains at the preset maximum speed. Then, continue with steps Step 301.

Specifically, if it is determined that the fourth temperature is greater than or equal to the preset threshold, the preset overheat protection mechanism is activated.

In an implementable manner, the preset overheat protection mechanism includes one or several combinations of the following: reducing the frequency of the compressor in the outdoor unit of the air conditioner; controlling the throttling device in the outdoor unit to open the valve.

Specifically, opening the valve of the throttling device can reduce the exhaust temperature, which in turn can reduce the temperature of the evaporator, thereby ensuring that the indoor unit will not affect the normal use of the air conditioner due to excessive temperature.

In an implementable manner, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is equal to the preset maximum rotational speed, and it is determined that the first mode is not the down-blowing mode, then the mode of the air guide plate is adjusted to Down blow mode; after the second time, the fifth temperature of the evaporator is obtained.

Specifically, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is equal to the preset maximum rotational speed, and it is determined that the first mode is not the down-blowing mode, then the mode of the air guide plate is adjusted to the mode of the air guide plate. Adjust from the first mode to the down-blowing mode; and after the second time, obtain the fifth temperature of the evaporator.

If it is determined that the fifth temperature is less than the preset threshold, the mode of the air deflector is restored to the first mode; or, if it is determined that the fifth temperature is greater than or equal to the preset threshold, a preset overheating protection mechanism is activated.

Then, the fifth temperature can be compared with the preset threshold. If it is determined that the fifth temperature is less than the preset threshold, then the mode of the air guide plate is restored from the down-blowing mode to the first mode, and step 301 is continued; or, if If it is determined that the fourth temperature is greater than or equal to the preset threshold, the preset overheat protection mechanism is activated.

In an implementable manner, if it is determined that the first temperature is greater than or equal to the preset threshold, the first rotation speed is determined to be equal to the preset maximum rotation speed, and the first mode is determined to be the downblowing mode, the preset overheating protection mechanism is activated.

Specifically, if it is determined that the first temperature is greater than or equal to the preset threshold, and the first rotational speed is determined to be equal to the preset maximum rotational speed, and the first mode is determined to be the downblowing mode, there is no need to adjust the mode of the air guide plate and the rotational speed of the fan. Adjust and directly activate the preset overheating protection mechanism.

Step 302B, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first mode is not the down-blowing mode, adjust the mode of the air guide plate to the down-blowing mode; after the third time, obtain the sixth value of the evaporator. temperature.

Wherein, the third time is a time length value preset according to the actual situation.

Specifically, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first mode is not the down-blowing mode, then the mode of the air guide plate can also be adjusted first, and the mode of the air guide plate is adjusted from the current first mode to Down blow mode, which in turn causes the wind to blow downward to enhance indoor air circulation. And after the third time has elapsed, the collected sixth temperature of the evaporator is obtained.

Step 305: If it is determined that the sixth temperature is less than the preset threshold, the mode of the air guide plate is restored to the first mode; or, if it is determined that the sixth temperature is greater than or equal to the preset threshold, and it is determined that the first rotation speed is less than the preset speed of the fan maximum speed, adjust the fan speed to the preset maximum speed; after the fourth time, obtain the seventh temperature of the evaporator.

The fourth time is a time length value preset according to the actual situation.

Specifically, the sixth temperature of the evaporator is compared with the preset threshold. If it is determined that the sixth temperature is less than the preset threshold, the mode of the air guide plate is restored from the downward blowing mode to the original first mode. Then, continue to step 301.

Or, if it is determined that the sixth temperature is greater than or equal to the preset threshold, and it is determined that the first speed is less than the preset maximum speed of the fan, then the speed of the fan is adjusted from the current first speed to the preset speed. maximum speed; and after the fourth time, obtain the seventh temperature of the evaporator.

Step 306: If it is determined that the seventh temperature is less than the preset threshold, the mode of the air guide plate is restored to the first mode; or, if it is determined that the seventh temperature is greater than or equal to the preset threshold, the preset overheating protection mechanism is activated.

Specifically, the seventh temperature of the evaporator is compared with the preset threshold. If it is determined that the seventh temperature is less than the preset threshold, then the mode of the air guide plate is restored from the downward blowing mode to the original first mode; and the execution is continued. Step 301.

Alternatively, if it is determined that the seventh temperature is greater than or equal to the preset threshold, the preset overheating protection mechanism is activated.

In an implementable manner, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is less than the preset maximum rotational speed, and it is determined that the first mode is the downward blowing mode, then the rotational speed of the fan is adjusted to the preset maximum speed.

Specifically, if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is less than the preset maximum rotational speed, and the first mode is determined to be the down-blowing mode, then the rotational speed of the fan is adjusted from the first rotational speed to Adjust to the preset maximum speed.

Then, after the fourth time, the eighth temperature of the evaporator is obtained; if it is determined that the eighth temperature is greater than or equal to the preset threshold, the preset overheating protection mechanism is activated.

Specifically, after the fourth time has elapsed, the eighth temperature of the evaporator is obtained; the eighth temperature is compared with the preset temperature. If it is determined that the eighth temperature is greater than or equal to the preset threshold, the preset overheating protection mechanism is activated. Further, if it is determined that the eighth temperature is less than the preset threshold, step 301 is continued.

Figure 4 is a schematic structural diagram of Embodiment 1 of a control device for air conditioning overheat protection provided by an embodiment of the present application. As shown in Figure 4, the air conditioner overheat protection control device 400 includes:

The acquisition unit 410 is used to acquire the first temperature of the evaporator in the indoor unit of the air conditioner, the first mode of the air guide plate in the indoor unit, and the first rotation speed of the fan in the indoor unit;

The adjustment unit 420 is configured to, if it is determined that the first temperature is greater than or equal to the preset threshold, adjust the mode of the air guide plate and the rotation speed of the fan according to the first mode and the first rotation speed, and obtain the second temperature of the evaporator;

The starting unit 430 is configured to start a preset overheating protection mechanism if it is determined that the second temperature is greater than or equal to the preset threshold.

FIG. 5 is a schematic structural diagram of Embodiment 2 of a control device for air conditioning overheat protection provided by an embodiment of the present application. As shown in Figure 5, based on the above embodiment, in the control device 500 for air conditioner overheat protection, the adjustment unit 420 also includes:

The first adjustment module 421 is used to adjust the speed of the fan to the preset maximum speed if it is determined that the first speed is less than the preset maximum speed of the fan;

After the first time, obtain the third temperature of the evaporator; if it is determined that the third temperature is less than the preset threshold, adjust the rotation speed of the fan to the first rotation speed;

Alternatively, if it is determined that the third temperature is greater than or equal to the preset threshold, and it is determined that the first mode is not the down-blowing mode, adjust the mode of the air guide plate to the down-blowing mode;

After the second time, obtain the fourth temperature of the evaporator;

If it is determined that the fourth temperature is less than the preset threshold, the mode of the air guide plate is restored to the first mode.

The first adjustment module 421 is also configured to adjust the mode of the air guide plate if it is determined that the first temperature is greater than or equal to the preset threshold, the first rotation speed is equal to the preset maximum rotation speed, and the first mode is not the down-blowing mode. It is the down blow mode;

After the second time, obtain the fifth temperature of the evaporator; if it is determined that the fifth temperature is less than the preset threshold, restore the mode of the air guide plate to the first mode;

Alternatively, if it is determined that the fifth temperature is greater than or equal to the preset threshold, the preset overheat protection mechanism is activated.

The first adjustment module 421 is also configured to activate the preset overheating protection mechanism if it is determined that the first temperature is greater than or equal to the preset threshold, the first rotation speed is equal to the preset maximum rotation speed, and the first mode is the downblowing mode. .

The adjustment unit 420 also includes:

The second adjustment module 422 is used to adjust the mode of the air guide plate to the down-blowing mode if it is determined that the first mode is not the down-blowing mode;

After the third time, obtain the sixth temperature of the evaporator; if it is determined that the sixth temperature is less than the preset threshold, restore the mode of the air guide plate to the first mode;

Alternatively, if it is determined that the sixth temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is less than the preset maximum rotational speed of the fan, then adjust the rotational speed of the fan to the preset maximum rotational speed;

After the fourth time, obtain the seventh temperature;

If it is determined that the seventh temperature is less than the preset threshold, the mode of the air guide plate is restored to the first mode.

The second adjustment module 422 is also configured to adjust the speed of the fan to the preset value if it is determined that the first temperature is greater than or equal to the preset threshold, the first speed is determined to be less than the preset maximum speed, and the first mode is the down-blowing mode. Set the maximum speed;

The second adjustment module 422 is also configured to activate the preset overheating protection mechanism if it is determined that the first temperature is greater than or equal to the preset threshold, the first rotation speed is equal to the preset maximum rotation speed, and the first mode is the downblowing mode. .

The control device for air conditioner overheat protection provided by the embodiments of the present application can be used to execute the control method for air conditioner overheat protection in any of the above embodiments. Its implementation principles and technical effects are similar and will not be described again here.

It should be noted that it should be understood that the division of each unit of the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into a physical entity, or they can also be physically separated. And these units can all be implemented in the form of software calling through processing components; they can also all be implemented in the form of hardware; some units can also be implemented in the form of software calling through processing components, and some units can be implemented in the form of hardware. In addition, all or part of these units can be integrated together or implemented independently. The processing element here may be an integrated circuit with signal processing capabilities. During the implementation process, each step of the above method or each of the above units can be completed by instructions in the form of hardware integrated logic circuits or software in the processor element.

Figure 6 is a schematic structural diagram of an air conditioner provided by an embodiment of the present application. As shown in Figure 6, the air conditioner may include: a processor 61, a memory 62, and computer program instructions stored in the memory 62 and executable on the processor 61. When the processor 61 executes the computer program instructions, any of the foregoing embodiments can be implemented. Provides control methods for air conditioner overheat protection.

Optionally, the air conditioner may also include an interface for interacting with other devices.

Optionally, the above-mentioned components of the air conditioner can be connected through a system bus.

The memory 62 may be a separate storage unit or a storage unit integrated in the processor. The number of processors is one or more.

It should be understood that the processor 61 can be a central processing unit (Central Processing Unit, CPU), or other general-purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC) wait. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in this application can be directly implemented by a hardware processor, or executed by a combination of hardware and software modules in the processor.

The system bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The system bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. Memory may include random access memory (random access memory) access memory (RAM), and may also include non-volatile memory (non-volatile memory, NVM), such as at least one disk memory.

All or part of the steps to implement the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, the steps including the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state hard disk, tape (English: magnetic tape), floppy disk (English: floppy disk), optical disk (English: optical disc) and any combination thereof.

The air conditioner provided by the embodiments of the present application can be used to execute the control method for air conditioner overheat protection provided by any of the above method embodiments. The implementation principles and technical effects are similar and will not be described again here.

Embodiments of the present application provide a computer-readable storage medium. Computer instructions are stored in the computer-readable storage medium. When the computer instructions are run on a computer, they cause the computer to execute the above control method for air conditioner overheat protection.

The above-mentioned computer-readable storage medium, the above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory, electrically erasable programmable read-only memory Memory, erasable programmable read-only memory, programmable read-only memory, read-only memory, magnetic memory, flash memory, magnetic or optical disk. Readable storage media can be any available media that can be accessed by a general purpose or special purpose computer.

Optionally, a readable storage medium is coupled to the processor such that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and readable storage medium may be located in Application Specific Integrated Circuits (ASICs). Of course, the processor and the readable storage medium may also exist as discrete components in the device.

Embodiments of the present application also provide a computer program product. The computer program product includes a computer program. The computer program is stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium. , when at least one processor executes a computer program, the above control method for air conditioner overheat protection can be implemented.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments. Note that those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not make the corresponding technology The essence of the solution deviates from the scope of the technical solution of each embodiment of the present application.

Claims

A control method for air conditioner overheat protection, which is characterized by including:

Obtaining the first temperature of the evaporator in the indoor unit of the air conditioner, the first mode of the air guide plate in the indoor unit, and the first rotation speed of the fan in the indoor unit;

If it is determined that the first temperature is greater than or equal to the preset threshold, adjust the mode of the air guide plate and the rotation speed of the fan according to the first mode and the first rotation speed, and obtain the evaporation The second temperature of the device;

If it is determined that the second temperature is greater than or equal to the preset threshold, the preset overheat protection mechanism is activated.
The method according to claim 1, characterized in that, according to the first mode and the first rotation speed, the mode of the air guide plate and the rotation speed of the fan are adjusted, and the evaporation speed is obtained. The second temperature of the device, including:

If it is determined that the first rotational speed is less than the preset maximum rotational speed of the fan, adjust the rotational speed of the fan to the preset maximum rotational speed;

After the first time, obtain a third temperature of the evaporator;

If it is determined that the third temperature is less than the preset threshold, adjust the rotation speed of the fan to the first rotation speed;

or,

If it is determined that the third temperature is greater than or equal to the preset threshold, and it is determined that the first mode is not a down-blowing mode, adjust the mode of the air guide plate to a down-blowing mode;

After the second time, obtain a fourth temperature of the evaporator;

The method further includes: if it is determined that the fourth temperature is less than the preset threshold, restoring the mode of the air guide plate to the first mode.
The method of claim 2, wherein if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is equal to the preset maximum rotational speed, and it is determined that the first If the mode is not the down-blowing mode, adjust the mode of the air guide plate to the down-blowing mode;

After the second time, obtain a fifth temperature of the evaporator;

If it is determined that the fifth temperature is less than the preset threshold, the mode of the air guide plate is restored. to the first mode;

or,

If it is determined that the fifth temperature is greater than or equal to the preset threshold, the preset overheat protection mechanism is activated.
The method according to claim 2, characterized in that if it is determined that the first temperature is greater than or equal to a preset threshold, and it is determined that the first rotation speed is equal to the preset maximum rotation speed, and it is determined that the first mode is In the down-blowing mode, the preset overheating protection mechanism is activated.
The method according to claim 1, characterized in that, according to the first mode and the first rotation speed, the mode of the air guide plate and the rotation speed of the fan are adjusted, and the evaporation speed is obtained. The second temperature of the device also includes:

If it is determined that the first mode is not the down-blowing mode, adjust the mode of the air guide plate to the down-blowing mode;

After the third time, obtain a sixth temperature of the evaporator;

If it is determined that the sixth temperature is less than the preset threshold, then restore the mode of the air guide plate to the first mode;

or,

If it is determined that the sixth temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is less than the preset maximum rotational speed of the fan, then adjust the rotational speed of the fan to the preset maximum rotational speed;

After the fourth time, obtain the seventh temperature of the evaporator;

The method further includes: if it is determined that the seventh temperature is less than the preset threshold, restoring the mode of the air guide plate to the first mode.
The method of claim 5, wherein if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first rotational speed is less than the preset maximum rotational speed, and it is determined that the first If the mode is the down-blowing mode, adjust the speed of the fan to the preset maximum speed;

After the fourth time, the eighth temperature of the evaporator is obtained; if it is determined that the eighth temperature is greater than or equal to the preset threshold, the preset overheating protection mechanism is activated.
The method of claim 5, wherein if it is determined that the first temperature is greater than or equal to the preset threshold, and it is determined that the first rotation speed is equal to the preset maximum rotation speed, and it is determined that the first temperature is greater than or equal to the preset threshold, If the mode is the down-blowing mode, the preset overheating protection mechanism is activated.
The method according to any one of claims 1 to 7, characterized in that the preset overheating protection mechanism includes one or several combinations of the following: reducing the frequency of the compressor in the outdoor unit of the air conditioner; controlling all The throttling device in the outdoor unit opens the valve.
A control device for air conditioner overheat protection, which is characterized by including:

An acquisition unit configured to acquire the first temperature of the evaporator in the indoor unit of the air conditioner, the first mode of the air guide plate in the indoor unit, and the first rotation speed of the fan in the indoor unit;

an adjustment unit configured to adjust the mode of the air guide plate and the rotation speed of the fan according to the first mode and the first rotation speed if it is determined that the first temperature is greater than or equal to the preset threshold, and obtain the second temperature of the evaporator;

A starting unit configured to start a preset overheat protection mechanism if it is determined that the second temperature is greater than or equal to a preset threshold.
An air conditioner, characterized by including a memory and a processor; wherein,

The memory is used to store computer programs;

The processor is configured to read the computer program stored in the memory, and execute the method described in any one of claims 1-8 according to the computer program in the memory.
A computer-readable storage medium, characterized in that computer-executable instructions are stored in the computer-readable storage medium. When the processor executes the computer-executable instructions, the method described in any one of the above claims 1-8 is realized. method.
A computer program product, including a computer program, characterized in that when the computer program is executed by a processor, it implements the method described in any one of claims 1-8.