WO2024093392A1 - Control method and apparatus for wall-mounted indoor air-conditioning unit, and wall-mounted indoor air-conditioning unit - Google Patents

Abstract

Provided are a control method and apparatus for a wall-mounted indoor air-conditioning unit, and a wall-mounted indoor air-conditioning unit. The control method for a wall-mounted indoor air-conditioning unit comprises: receiving a trigger signal for a wall-mounted indoor air-conditioning unit to enable a heating mode, and acquiring a set temperature of the wall-mounted indoor air-conditioning unit; measuring an ambient temperature at a diagonal position of the wall-mounted indoor air-conditioning unit and a heat exchanger temperature of the wall-mounted indoor air-conditioning unit; determining the operating state of the wall-mounted indoor air-conditioning unit according to the set temperature, the ambient temperature, and the heat exchanger temperature; and controlling the wall-mounted indoor air-conditioning unit to operate according to the determined operating state. According to the solution of the present invention, an ambient temperature and a heat exchanger temperature are comprehensively considered to reasonably and effectively adjust a wall-mounted indoor air-conditioning unit running in a heating mode, so that the operating reliability of the wall-mounted indoor air-conditioning unit is improved; the wall-mounted indoor air-conditioning unit is prevented from easily and frequently enabling thermal protection, the heating effect of the wall-mounted indoor air-conditioning unit is guaranteed, and the comfort experience of users is improved.

Description

Control method and device for indoor unit of wall-mounted air conditioner and indoor unit of wall-mounted air conditioner Technical Field

The present invention relates to the technical field of household appliances, and in particular to a control method and device for an indoor unit of a wall-mounted air conditioner, and the indoor unit of the wall-mounted air conditioner.

Background technique

With the development of society and the continuous improvement of people's living standards, various air conditioning devices have become one of the indispensable electrical equipment in people's daily lives. Various air conditioning devices can help people reach a temperature they can adapt to when the ambient temperature is too high or too low.

The current air conditioning devices mainly include various types of air conditioners and fans. Air conditioners can be divided into vertical, wall-mounted, ceiling-mounted, etc. according to different installation methods. Vertical air conditioners are mainly used in public places such as living rooms with large areas, schools, hospitals, etc. Wall-mounted air conditioners are mainly used in indoor environments with moderate areas, such as bedrooms at home.

When the indoor unit of the wall-mounted air conditioner is running in the heating mode, the hot air will automatically rise, which sometimes causes the local temperature above the indoor unit of the wall-mounted air conditioner to overheat, causing the indoor unit of the wall-mounted air conditioner to turn on the thermal protection, and the indoor unit of the wall-mounted air conditioner stops heating, thus affecting its heating effect. At present, the indoor unit of the wall-mounted air conditioner often turns on the thermal protection easily and frequently, and directly reducing the frequency or stopping the heating by turning on the thermal protection method will lead to a decrease in the heating amount, affecting the temperature regulation of the indoor environment, thereby affecting the user's comfort experience.

Summary of the invention

An object of the present invention is to reasonably and effectively adjust an indoor unit of a wall-mounted air conditioner operating in a heating mode by comprehensively considering the ambient temperature and the heat exchanger temperature.

A further object of the present invention is to enable thermal protection according to actual conditions under the premise that the indoor ambient temperature is evenly distributed, so as to effectively ensure the heating effect of the indoor unit of the wall-mounted air conditioner.

In particular, the present invention provides a control method for a wall-mounted air conditioner indoor unit, comprising: receiving a trigger signal for starting a heating mode of the wall-mounted air conditioner indoor unit and obtaining a set temperature of the wall-mounted air conditioner indoor unit; detecting the ambient temperature at a diagonal position of the wall-mounted air conditioner indoor unit and a heat exchanger temperature of the wall-mounted air conditioner indoor unit; determining a working state of the wall-mounted air conditioner indoor unit according to the set temperature, the ambient temperature and the heat exchanger temperature; and controlling the wall-mounted air conditioner indoor unit to operate according to the determined working state.

Optionally, the step of determining the working state of the indoor unit of the wall-mounted air conditioner according to the set temperature, ambient temperature and heat exchanger temperature includes: judging whether the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature; and if so, determining that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is increased.

Optionally, when the ambient temperature is greater than or equal to the difference between the set temperature and a preset value, and the heat exchanger temperature is greater than or equal to a preset thermal protection temperature, it is determined that the thermal protection mode of the indoor unit of the wall-mounted air conditioner is turned on.

Optionally, after determining that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner increases, the step also includes: controlling the speed of the indoor fan to increase, and re-detecting the ambient temperature and the heat exchanger temperature, and determining that the thermal protection mode of the indoor unit of the wall-mounted air conditioner is turned on when the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature.

Optionally, after the step of determining that the indoor unit of the wall-mounted air conditioner turns on the thermal protection mode, the method further includes: controlling the indoor unit of the wall-mounted air conditioner to turn off the heating mode for a preset time period.

Optionally, after the step of controlling the indoor unit of the wall-mounted air conditioner to turn off the heating mode for a preset time, it also includes: re-detecting the heat exchanger temperature, and controlling the indoor unit of the wall-mounted air conditioner to turn on the heating mode again when the heat exchanger temperature is lower than the preset thermal protection temperature.

Optionally, when the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, it is determined that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged.

Optionally, when the ambient temperature is greater than or equal to the difference between the set temperature and a preset value, and the heat exchanger temperature is less than a preset thermal protection temperature, it is determined that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged.

According to another aspect of the present invention, a control device for a wall-mounted air conditioner indoor unit is provided, comprising: a processor and a memory, wherein a control program is stored in the memory, and when the control program is executed by the processor, it is used to implement any of the above-mentioned control methods for the wall-mounted air conditioner indoor unit.

According to yet another aspect of the present invention, there is provided a wall-mounted air conditioner indoor unit, which has the control device of the wall-mounted air conditioner indoor unit.

The control method and device of the indoor unit of a wall-mounted air conditioner of the present invention and the indoor unit of the wall-mounted air conditioner receive a trigger signal for starting a heating mode of the indoor unit of the wall-mounted air conditioner and obtain a set temperature of the indoor unit of the wall-mounted air conditioner, detect the ambient temperature at a diagonal position of the indoor unit of the wall-mounted air conditioner and the temperature of a heat exchanger of the indoor unit of the wall-mounted air conditioner, determine the working state of the indoor unit of the wall-mounted air conditioner according to the set temperature, the ambient temperature and the temperature of the heat exchanger, and control the indoor unit of the wall-mounted air conditioner to operate according to the determined working state. It can comprehensively consider the ambient temperature and the heat exchanger temperature to reasonably and effectively adjust the indoor unit of the wall-mounted air conditioner running in the heating mode, thereby improving the working reliability of the indoor unit of the wall-mounted air conditioner.

Furthermore, the control method, device and indoor unit of a wall-mounted air conditioner of the present invention determine that the speed of the indoor fan of the wall-mounted air conditioner indoor unit is increased when the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature; determine that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged when the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, or when the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature; determine that the indoor unit of the wall-mounted air conditioner turns on the thermal protection mode when the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, and the thermal protection mode can be turned on according to the actual situation under the premise that the indoor ambient temperature is evenly distributed, thereby avoiding the wall-mounted air conditioner indoor unit from turning on the thermal protection easily and frequently, effectively ensuring the heating effect of the wall-mounted air conditioner indoor unit, and improving the user's comfort experience.

Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG1 is a schematic diagram of a control method for an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

2 is a detailed flow chart of a control method for an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

3 is a schematic block diagram of a control device for an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention; and

FIG. 4 is a schematic diagram of the overall structure of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention.

Detailed ways

This embodiment first provides a control method for a wall-mounted air conditioner indoor unit, which can comprehensively consider the ambient temperature and the heat exchanger temperature to reasonably and effectively adjust the wall-mounted air conditioner indoor unit running in the heating mode, thereby improving the working reliability of the wall-mounted air conditioner indoor unit. Schematic diagram of a control method for an indoor unit of a wall-mounted air conditioner according to an embodiment. As shown in FIG1 , the control method for an indoor unit of a wall-mounted air conditioner can perform the following steps:

Step S102, receiving a trigger signal for starting a heating mode of the indoor unit of the wall-mounted air conditioner and obtaining a set temperature of the indoor unit of the wall-mounted air conditioner;

Step S104, detecting the ambient temperature at the diagonal position of the indoor unit of the wall-mounted air conditioner and the temperature of the heat exchanger of the indoor unit of the wall-mounted air conditioner;

Step S106, determining the working state of the indoor unit of the wall-mounted air conditioner according to the set temperature, the ambient temperature and the temperature of the heat exchanger;

Step S108, controlling the indoor unit of the wall-mounted air conditioner to operate according to the determined working state.

In the above steps, step S102 receives a trigger signal for turning on the heating mode of the indoor unit of the wall-mounted air conditioner and obtains the set temperature of the indoor unit of the wall-mounted air conditioner. Specifically, the trigger signal for turning on the heating mode of the indoor unit of the wall-mounted air conditioner and its set temperature can be obtained in a variety of ways. For example, it can be obtained through a remote control, a display device, a voice device of the indoor unit of the wall-mounted air conditioner, or a mobile terminal bound to the indoor unit of the wall-mounted air conditioner. The mobile terminal can be a smart device that is easy to move, such as a smart phone, a tablet computer, etc. Receiving a trigger signal for turning on the heating mode of the indoor unit of the wall-mounted air conditioner means that the indoor unit of the wall-mounted air conditioner starts to operate in the heating mode.

Step S104 detects the ambient temperature at the diagonal position of the indoor unit of the wall-mounted air conditioner and the heat exchanger temperature of the indoor unit of the wall-mounted air conditioner, wherein the diagonal position of the indoor unit of the wall-mounted air conditioner and the heat exchanger can be provided with temperature sensors, so that the ambient temperature and the heat exchanger temperature can be detected by the corresponding temperature sensors. The heat exchanger temperature refers to the temperature of the heat exchanger in the indoor unit of the wall-mounted air conditioner, and when the indoor unit of the wall-mounted air conditioner is operated in the heating mode, the heat exchanger works as a condenser.

It should be noted that, generally, the indoor unit of the wall-mounted air conditioner can be arranged on one wall of the indoor environment, and a temperature sensor for detecting the ambient temperature can be arranged on the other wall opposite to the indoor unit of the wall-mounted air conditioner. Moreover, the temperature sensor and the indoor unit of the wall-mounted air conditioner can be located at a diagonal position, that is, the temperature sensor detects the ambient temperature at a position far from the indoor unit of the wall-mounted air conditioner. In a preferred embodiment, in addition to being arranged at a diagonal position of the indoor unit of the wall-mounted air conditioner, the temperature sensor can also be arranged slightly lower, that is, it does not measure the ambient temperature at a higher position close to the indoor unit of the wall-mounted air conditioner.

When the indoor unit of the wall-mounted air conditioner is in heating mode, the hot air generated will automatically rise, and the ambient temperature of the surrounding or upper area will easily rise, which may easily reach However, the overall temperature of the indoor environment may not meet the requirements. By setting a temperature sensor at the diagonal of the indoor unit of the wall-mounted air conditioner, it is possible to accurately understand whether the overall temperature distribution of the indoor environment is uniform, thereby laying the foundation for accurately judging whether the indoor unit of the wall-mounted air conditioner should turn on thermal protection.

Step S106 determines the working state of the indoor unit of the wall-mounted air conditioner according to the set temperature, ambient temperature and heat exchanger temperature. In a specific embodiment, the difference between the ambient temperature and the set temperature can be compared with the preset value, and the heat exchanger temperature can be compared with the preset thermal protection temperature. The working state of the indoor unit of the wall-mounted air conditioner is determined according to the two comparison results.

For example, when the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, it is determined that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is increased. When the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, it is determined that the indoor unit of the wall-mounted air conditioner turns on the thermal protection mode.

When the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, the indoor unit of the wall-mounted air conditioner is determined to maintain the current heating mode unchanged. When the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, the indoor unit of the wall-mounted air conditioner is determined to maintain the current heating mode unchanged.

Since the current wall-mounted air conditioner indoor unit often directly turns on the thermal protection when the heat exchanger temperature reaches the preset thermal protection temperature, the thermal protection is easily and frequently turned on, resulting in a decrease in the heat of the wall-mounted air conditioner indoor unit, affecting the heating effect of the wall-mounted air conditioner indoor unit. In some cases, turning on the thermal protection is often unnecessary, for example, due to insufficient heat circulation, hot air circulates in the upper part, causing the local temperature above the wall-mounted air conditioner indoor unit to be too high, triggering thermal protection.

In this embodiment, when the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, it is determined that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is increased. That is, although the heat exchanger temperature has reached the preset thermal protection temperature, the ambient temperature at the diagonal of the indoor unit of the wall-mounted air conditioner has not reached the difference between the set temperature and the preset value, indicating that the temperature distribution of the indoor environment is uneven, and the heat exchanger temperature is increased due to the circulation of hot air in the upper part. Therefore, the thermal protection is not directly turned on, but the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is determined to be increased.

By increasing the speed of the indoor fan to increase the air flow rate, the indoor air flow is accelerated, the temperature distribution is uniform, and the heat exchanger temperature is reduced. The control method of the indoor unit of the wall-mounted air conditioner in this embodiment can eliminate the erroneous cause that causes the thermal protection to be turned on, ensure the necessity of turning on the thermal protection, and effectively reduce the number and frequency of turning on the thermal protection, thereby ensuring the heating and cooling of the indoor unit of the wall-mounted air conditioner. Thermal effect.

Step S108 controls the indoor unit of the wall-mounted air conditioner to operate according to the determined working state, so that the working state of the indoor unit of the wall-mounted air conditioner can be made to conform to the actual situation, and the working reliability is high. For example, when it is determined that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner increases, the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner can be controlled to increase. When it is determined that the indoor unit of the wall-mounted air conditioner turns on the thermal protection mode, the indoor unit of the wall-mounted air conditioner can be controlled to turn on the thermal protection mode. When it is determined that the indoor unit of the wall-mounted air conditioner keeps the current heating mode unchanged, the indoor unit of the wall-mounted air conditioner can be controlled to keep the current heating mode unchanged, that is, there is no need to turn on thermal protection or adjust the speed of the indoor fan.

The control method of the wall-mounted air conditioner indoor unit of the present embodiment receives a trigger signal for starting the heating mode of the wall-mounted air conditioner indoor unit and obtains the set temperature of the wall-mounted air conditioner indoor unit, detects the ambient temperature at the diagonal position of the wall-mounted air conditioner indoor unit and the heat exchanger temperature of the wall-mounted air conditioner indoor unit, determines the working state of the wall-mounted air conditioner indoor unit according to the set temperature, ambient temperature and heat exchanger temperature, controls the wall-mounted air conditioner indoor unit to operate according to the determined working state, and can reasonably and effectively adjust the wall-mounted air conditioner indoor unit operating in the heating mode by comprehensively considering the ambient temperature and the heat exchanger temperature, thereby improving the working reliability of the wall-mounted air conditioner indoor unit.

In some optional embodiments, the wall-mounted air conditioner indoor unit can achieve higher technical effects by further optimizing and configuring the above steps. The control method of the wall-mounted air conditioner indoor unit of this embodiment is described in detail below in combination with the introduction of an optional execution process of this embodiment. This embodiment is only an example of the execution process. In the specific implementation, the execution order and operating conditions of some steps can be modified according to the specific implementation requirements. Figure 2 is a detailed flow chart of the control method of the wall-mounted air conditioner indoor unit according to an embodiment of the present invention. The control method of the wall-mounted air conditioner indoor unit may include the following steps:

Step S202, receiving a trigger signal for starting a heating mode of the indoor unit of the wall-mounted air conditioner and obtaining a set temperature of the indoor unit of the wall-mounted air conditioner;

Step S204, detecting the ambient temperature at the diagonal position of the indoor unit of the wall-mounted air conditioner and the temperature of the heat exchanger of the indoor unit of the wall-mounted air conditioner;

Step S206, determining whether the ambient temperature is less than the difference between the set temperature and the preset value, and whether the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, if so, executing step S208, if not, executing step S210;

Step S208, determining that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is increased;

Step S210, determine whether the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and The heat exchanger temperature is greater than or equal to the preset thermal protection temperature. If so, execute step S212; if not, execute step S214;

Step S212, determining that the indoor unit of the wall-mounted air conditioner is in thermal protection mode;

Step S214, determining whether the ambient temperature is less than the difference between the set temperature and the preset value, and whether the heat exchanger temperature is less than the preset thermal protection temperature, if so, executing step S218, if not, executing step S216;

Step S216, the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature;

Step S218, determining that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged;

Step S220, controlling the indoor unit of the wall-mounted air conditioner to operate according to the determined working state.

In the above steps, first execute step S202 and step S204, receive the trigger signal for starting the heating mode of the indoor unit of the wall-mounted air conditioner and obtain the set temperature of the indoor unit of the wall-mounted air conditioner, detect the ambient temperature at the diagonal position of the indoor unit of the wall-mounted air conditioner and the heat exchanger temperature of the indoor unit of the wall-mounted air conditioner, and then execute step S206 to determine whether the ambient temperature is less than the difference between the set temperature and the preset value, and whether the heat exchanger temperature is greater than or equal to the preset thermal protection temperature.

If the judgment result of step S206 is yes, that is, the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, step S208 is executed to determine that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is increased. In this case, although the heat exchanger temperature has reached the preset thermal protection temperature, the ambient temperature at the diagonal of the indoor unit of the wall-mounted air conditioner has not reached the difference between the set temperature and the preset value, indicating that the temperature distribution of the indoor environment is uneven, and the heat exchanger temperature is increased due to the circulation of hot air in the upper part. Therefore, the thermal protection is not directly turned on, but the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is determined to be increased.

By increasing the speed of the indoor fan to increase the air flow rate, the indoor air flow is accelerated, the temperature distribution is even, and the temperature of the heat exchanger is reduced. The wrong reasons that lead to the activation of the thermal protection are eliminated, the necessity of the activation of the thermal protection is ensured, and the number and frequency of activation of the thermal protection are effectively reduced, thereby ensuring the heating amount and heating effect of the indoor unit of the wall-mounted air conditioner.

If the judgment result of step S206 is no, step S210 is executed to determine whether the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature. And if the judgment result of step S210 is yes, that is, the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, step S212 is executed to determine whether the thermal protection mode of the indoor unit of the wall-mounted air conditioner is turned on. In this case, the heat exchanger temperature has reached the preset thermal protection temperature, and the ambient temperature at the diagonal of the indoor unit of the wall-mounted air conditioner has also reached the set The difference between the temperature and the preset value indicates that the temperature distribution of the indoor environment is relatively uniform, and the increase in the heat exchanger temperature is not caused by the hot air circulating in the upper part. Therefore, it can be determined that the thermal protection mode of the indoor unit of the wall-mounted air conditioner is turned on, and it is necessary to turn on the thermal protection at this time.

It should be noted that after determining in step S208 that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner has increased, the speed of the indoor fan can be controlled to increase. The ambient temperature and the heat exchanger temperature can be re-detected, and when the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, it is determined that the indoor unit of the wall-mounted air conditioner is turned on in thermal protection mode. In other words, if the conditions for turning on thermal protection are still met after increasing the speed of the indoor fan to promote uniform temperature distribution and lowering the heat exchanger temperature, it can be determined that the indoor unit of the wall-mounted air conditioner is turned on in thermal protection mode.

If the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is lowered by increasing the indoor fan speed to promote uniform temperature distribution and lowering the heat exchanger temperature, and the heat exchanger temperature is lower than the preset thermal protection temperature, that is, the indoor ambient temperature is evenly distributed, but the heat exchanger temperature does not reach the preset thermal protection temperature, then the thermal protection can be avoided because the conditions for thermal protection are not met.

If the judgment result of step S210 is no, step S214 is executed to determine whether the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature. And if the judgment result of step S214 is yes, that is, the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, step S218 is executed to determine that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged. In this case, the heat exchanger temperature has not reached the preset thermal protection temperature, and the ambient temperature at the diagonal of the indoor unit of the wall-mounted air conditioner has not reached the difference between the set temperature and the preset value, so there is no need to turn on thermal protection, and it is sufficient to determine that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged.

Since the difference between the ambient temperature and the set temperature and the preset value is compared, and the heat exchanger temperature is compared with the preset thermal protection temperature, there are four comprehensive comparison results of the two. According to the step execution sequence shown in FIG. 2, when the judgment result of step S214 is no, it can be accurately determined that the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, that is, step S216 is executed. Moreover, after executing step S216, step S218 can be executed to determine that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged.

That is to say, when the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, since the ambient temperature at the diagonal of the indoor unit of the wall-mounted air conditioner reaches the difference between the set temperature and the preset value, but the heat exchanger temperature does not reach the preset thermal protection temperature, Therefore, there is no need to turn on thermal protection, just make sure the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged.

In addition, after step S208, step S212 and step S218, step S220 can be executed to control the indoor unit of the wall-mounted air conditioner to operate according to the determined working state. In this way, the working state of the indoor unit of the wall-mounted air conditioner can be made to conform to the actual situation, and the working reliability is high. For example, when it is determined that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner increases, the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner can be controlled to increase. When it is determined that the indoor unit of the wall-mounted air conditioner turns on the thermal protection mode, the indoor unit of the wall-mounted air conditioner can be controlled to turn on the thermal protection mode. When it is determined that the indoor unit of the wall-mounted air conditioner keeps the current heating mode unchanged, the indoor unit of the wall-mounted air conditioner can be controlled to keep the current heating mode unchanged, that is, there is no need to turn on thermal protection or adjust the speed of the indoor fan.

Among them, controlling the indoor unit of the wall-mounted air conditioner to start the thermal protection mode may include: controlling the indoor unit of the wall-mounted air conditioner to turn off the heating mode for a preset time. That is, after determining that the indoor unit of the wall-mounted air conditioner starts the thermal protection mode, the indoor unit of the wall-mounted air conditioner may be controlled to turn off the heating mode for a preset time. Moreover, after controlling the indoor unit of the wall-mounted air conditioner to turn off the heating mode for a preset time, it may also include: re-detecting the temperature of the heat exchanger, and when the temperature of the heat exchanger is less than the preset thermal protection temperature, controlling the indoor unit of the wall-mounted air conditioner to turn on the heating mode again.

That is to say, after controlling the indoor unit of the wall-mounted air conditioner to turn on the thermal protection mode, that is, turning off the heating mode for a preset period of time, the heat exchanger temperature is re-detected. If the heat exchanger temperature is lower than the preset thermal protection temperature, it means that thermal protection is no longer needed. The indoor unit of the wall-mounted air conditioner can be controlled to turn on the heating mode again to continue to provide heat to the indoor environment to meet the user's comfort needs.

It should be noted that, in a specific embodiment, the preset value may be 1° C., and the preset thermal protection temperature may be 58° C. It should be noted that the specific values of the above preset parameters are only for example, and are not intended to limit the present invention. In other embodiments, other specific values may be set according to actual conditions.

Several specific embodiments are introduced below: If the set temperature is 23°C, the detected ambient temperature is 22°C, and the heat exchanger temperature is 50°C, then it can be determined that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged. If the set temperature is 23°C, the detected ambient temperature is 22°C, and the heat exchanger temperature is 59°C, then it can be determined that the indoor unit of the wall-mounted air conditioner turns on the thermal protection mode.

If the set temperature is 23°C, the detected ambient temperature is 20°C, and the heat exchanger temperature is 50°C, it can be determined that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged. If the set temperature is 23°C, the detected ambient temperature is 20°C, and the heat exchanger temperature is 59°C, it can be determined that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner increases.

The control method of the indoor unit of the wall-mounted air conditioner of the present embodiment determines that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is increased when the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature; determines that the indoor unit of the wall-mounted air conditioner maintains the current heating mode when the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, or when the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature; determines that the indoor unit of the wall-mounted air conditioner turns on the thermal protection mode when the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature. The thermal protection can be turned on according to the actual situation under the premise that the indoor ambient temperature is evenly distributed, so as to avoid the indoor unit of the wall-mounted air conditioner from turning on the thermal protection easily and frequently, effectively ensure the heating effect of the indoor unit of the wall-mounted air conditioner, and improve the user's comfort experience.

This embodiment also provides a control device for a wall-mounted air conditioner indoor unit. FIG3 is a schematic block diagram of a control device 200 for a wall-mounted air conditioner indoor unit according to an embodiment of the present invention. The control device 200 for the wall-mounted air conditioner indoor unit includes a processor 210 and a memory 220, wherein the memory 220 stores a control program 221, and the control program 221 is used to implement the control method for the wall-mounted air conditioner indoor unit of any of the above embodiments when executed by the processor 210. That is, the control method for the wall-mounted air conditioner indoor unit of any of the above embodiments is described from the side of the control device 200 of the wall-mounted air conditioner indoor unit, that is, the control device 200 of the wall-mounted air conditioner indoor unit executes the relevant steps.

The processor 210 may be a central processing unit (CPU) or a digital processing unit, etc. The processor 210 sends and receives data through a communication interface. The memory 220 is used to store the program executed by the processor 210. The memory 220 is any medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, and may also be a combination of multiple memories 220. The above-mentioned control program 221 can be downloaded from a computer-readable storage medium to a corresponding computing/processing device or downloaded and installed to the control device 200 via a network (e.g., the Internet, a local area network, a wide area network and/or a wireless network).

This embodiment also provides a wall-mounted air conditioner indoor unit. FIG4 is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention. The wall-mounted air conditioner indoor unit 100 may have a control device 200 of the wall-mounted air conditioner indoor unit of the above embodiment. That is, the control device 200 of the wall-mounted air conditioner indoor unit may not be arranged outside the wall-mounted air conditioner indoor unit 100, but may be arranged on the wall-mounted air conditioner indoor unit 100.

As shown in FIG. 4 , the wall-mounted air conditioner indoor unit 100 of this embodiment may include: a housing 110, and an air outlet 111 may be provided below the housing 110. Specifically, the interior of the housing 110 defines The indoor fan and the heat exchanger can be arranged in the cavity. When the indoor unit 100 of the wall-mounted air conditioner is operated in the heating mode, the heat exchanger in the cavity works as a condenser, and the indoor fan can send the hot air after the heat exchange of the heat exchanger to the indoor environment through the air outlet 111. In addition, a horizontal guide plate 112 and a vertical guide plate can be arranged at the air outlet 111, wherein the vertical guide plate can adjust the left and right air outlet, and the horizontal guide plate 112 can adjust the up and down air outlet.

The control method of the indoor unit of the wall-mounted air conditioner in the above embodiment determines that the speed of the indoor fan of the indoor unit 100 of the wall-mounted air conditioner is increased when the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature. Although the heat exchanger temperature has reached the preset thermal protection temperature, since the ambient temperature at the diagonal of the indoor unit 100 of the wall-mounted air conditioner has not reached the difference between the set temperature and the preset value, it means that the temperature distribution of the indoor environment is uneven, and the heat exchanger temperature is increased due to the circulation of hot air in the upper part. In the case of the increase in the heat exchanger temperature caused by the circulation of hot air in the upper part, the thermal protection is not directly turned on, but the air flow rate is increased by increasing the speed of the indoor fan, so that the air flow in the indoor environment is accelerated, the temperature distribution is promoted to be uniform, and the heat exchanger temperature is reduced.

In some other embodiments, other measures may be taken to replace the increase in the speed of the indoor fan, so as to promote uniform distribution of indoor ambient temperature and reduce the temperature of the heat exchanger without turning on the thermal protection. For example, the posture of the transverse guide plate 112 of the wall-mounted air conditioner indoor unit 100 may be adjusted so that the wall-mounted air conditioner indoor unit 100 can blow air downward. The wall-mounted air conditioner indoor unit 100 can blow air downward to avoid a large amount of hot air from gathering above the wall-mounted air conditioner indoor unit 100, thereby avoiding the hot air from passing through the air inlet to the heat exchanger and causing the temperature of the heat exchanger to rise, that is, the temperature of the heat exchanger can be effectively reduced, and the hot air can be promoted to circulate fully in the indoor environment, so that the temperature distribution of the indoor environment is uniform.

For another example, the opening of the expansion valve of the wall-mounted air conditioner indoor unit 100 can be adjusted to control the expansion valve opening to increase the flow of the refrigerant entering the heat exchanger. The increase in the flow of the refrigerant entering the heat exchanger increases the heating capacity of the heat exchanger, promotes the full circulation of hot air into the indoor environment, makes the temperature distribution of the indoor environment uniform, and can prevent a large amount of hot air from gathering above the wall-mounted air conditioner indoor unit 100, thereby preventing the hot air from coming to the heat exchanger through the air inlet and causing the temperature of the heat exchanger to rise, that is, the temperature of the heat exchanger can be effectively reduced.

In some specific embodiments, the three measures of controlling the opening of the expansion valve to increase, controlling the speed of the indoor fan to increase, and adjusting the posture of the transverse guide plate 112 to enable the wall-mounted air conditioner indoor unit 100 to blow air downward can be used alone to promote uniform temperature distribution and reduce the heat exchanger. Temperature, or any two or three of them can be used together to promote uniform temperature distribution and reduce the temperature of the heat exchanger.

At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and identified as covering all such other variations or modifications.

Claims (10)

A control method for an indoor unit of a wall-mounted air conditioner, comprising: Receiving a trigger signal for starting a heating mode of the indoor unit of the wall-mounted air conditioner and obtaining a set temperature of the indoor unit of the wall-mounted air conditioner; Detecting the ambient temperature at the diagonal position of the indoor unit of the wall-mounted air conditioner and the temperature of the heat exchanger of the indoor unit of the wall-mounted air conditioner; Determining the operating state of the indoor unit of the wall-mounted air conditioner according to the set temperature, the ambient temperature and the heat exchanger temperature; and The indoor unit of the wall-mounted air conditioner is controlled to operate according to the determined working state. The method according to claim 1, wherein the step of determining the working state of the indoor unit of the wall-mounted air conditioner according to the set temperature, the ambient temperature and the heat exchanger temperature comprises: Determining whether the ambient temperature is less than the difference between the set temperature and a preset value, and whether the heat exchanger temperature is greater than or equal to a preset thermal protection temperature; and If so, it is determined that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is increased. The method according to claim 2, wherein When the ambient temperature is greater than or equal to the difference between the set temperature and a preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, it is determined that the thermal protection mode of the indoor unit of the wall-mounted air conditioner is turned on. The method according to claim 2, wherein after the step of determining that the speed of the indoor fan of the indoor unit of the wall-mounted air conditioner is increased, the method further comprises: The speed of the indoor fan is controlled to increase, and the ambient temperature and the heat exchanger temperature are re-detected. When the ambient temperature is greater than or equal to the difference between the set temperature and the preset value, and the heat exchanger temperature is greater than or equal to the preset thermal protection temperature, it is determined that the thermal protection mode of the indoor unit of the wall-mounted air conditioner is turned on. The method according to claim 3 or 4, wherein after the step of determining that the indoor unit of the wall-mounted air conditioner is in thermal protection mode, the method further comprises: Control the preset duration of the heating mode of the indoor unit of the wall-mounted air conditioner to be turned off. The method according to claim 5, wherein after the step of controlling the indoor unit of the wall-mounted air conditioner to turn off the heating mode for a preset time, the method further comprises: The heat exchanger temperature is re-detected, and when the heat exchanger temperature is less than the preset thermal protection temperature, the indoor unit of the wall-mounted air conditioner is controlled to restart the heating mode. The method according to claim 2, wherein When the ambient temperature is less than the difference between the set temperature and the preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, it is determined that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged. The method according to claim 2, wherein When the ambient temperature is greater than or equal to the difference between the set temperature and a preset value, and the heat exchanger temperature is less than the preset thermal protection temperature, it is determined that the indoor unit of the wall-mounted air conditioner maintains the current heating mode unchanged. A control device for a wall-mounted air conditioner indoor unit, comprising a processor and a memory, wherein the memory stores a control program, and when the control program is executed by the processor, it is used to implement a control method for a wall-mounted air conditioner indoor unit according to any one of claims 1 to 8. A wall-mounted air conditioner indoor unit comprises the control device for the wall-mounted air conditioner indoor unit according to claim 9.