WO2024001376A1

WO2024001376A1 - Air conditioner

Info

Publication number: WO2024001376A1
Application number: PCT/CN2023/085940
Authority: WO
Inventors: 刘腾; 李本卫; 张然; 张绍良
Original assignee: 海信空调有限公司
Priority date: 2022-06-30
Filing date: 2023-04-03
Publication date: 2024-01-04

Abstract

Provided is an air conditioner. The air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor, a concentration sensor, a control apparatus and a controller. The concentration sensor is configured to measure a concentration value of a refrigerant in a room. The control apparatus is configured to send indication signals. The controller is configured to: acquire the concentration value of the refrigerant, which is measured by means of the concentration sensor; control the compressor to run at a preset target operating frequency when the concentration value is greater than or equal to a preset first concentration threshold value and when the indoor heat exchanger works as an evaporator; and when receiving the indication signals from the control apparatus, only execute an indication signal among the indication signals that is used to indicate that the air conditioner is turned on or turned off.

Description

air conditioner

This application claims the priority of the Chinese patent application with application number 202210764206.6, submitted on June 30, 2022, and the priority of the Chinese patent application with application number 202210761284.0, submitted on June 30, 2022, in 2022 The priority of the Chinese patent application with application number 202210761276.6, submitted on June 30, the entire content of which is incorporated into this application by reference.

Technical field

The present disclosure relates to the technical field of household appliances, and in particular to an air conditioner.

Background technique

The air conditioner performs the refrigeration cycle of the air conditioner by using a compressor, condenser, expansion valve, and evaporator. The refrigeration cycle consists of a series of processes involving compression, condensation, expansion and evaporation. The refrigeration cycle of the air conditioner is inseparable from the refrigerant. The refrigerant releases heat when it condenses and liquefies, and absorbs heat when it evaporates and vaporizes, thereby realizing the exchange and transfer of heat.

Contents of the invention

An air conditioner is provided. The air conditioner includes an indoor heat exchanger, an outdoor heat exchanger, a compressor, a concentration sensor, a control device and a controller. The concentration sensor is configured to detect a concentration value of refrigerant in the room. The control device is configured to send an indication signal. The controller is configured to obtain the concentration value of the refrigerant detected by the concentration sensor; when the concentration value is greater than or equal to a preset first concentration threshold and the indoor heat exchanger works as an evaporator, Controlling the compressor to operate at a preset target operating frequency; and when receiving the indication signal from the control device, only executing instructions in the indication signal for instructing the air conditioner to turn on or off Signal.

Description of drawings

In order to explain the technical solutions in the present disclosure more clearly, the drawings required to be used in some embodiments of the present disclosure will be briefly introduced below. However, the drawings in the following description are only the drawings of some embodiments of the present disclosure. , for those of ordinary skill in the art, other drawings can also be obtained based on these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of the present disclosure.

Figure 1 is a block diagram of an air conditioner according to some embodiments;

Figure 2 is a structural diagram of an air conditioner according to some embodiments;

Figure 3 is a structural diagram of another air conditioner according to some embodiments;

Figure 4 is a block diagram of another air conditioner provided according to some embodiments;

Figure 5 is a flow chart of a controller of an air conditioner according to some embodiments;

Figure 6 is a flow chart of yet another controller of an air conditioner provided according to some embodiments;

Figure 7 is a flow chart of yet another controller of an air conditioner provided according to some embodiments;

Figure 8 is a structural diagram of an indoor unit of an air conditioner according to some embodiments.

Detailed ways

The technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments provided by this disclosure, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this disclosure.

Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms such as the third person singular "comprises" and the present participle "comprising" are used. Interpreted as open and inclusive, it means "including, but not limited to." In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific "example" or "some examples" and the like are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

Hereinafter, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

In describing some embodiments, expressions "coupled" and "connected" and their derivatives may be used. The term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium. The term "coupled" indicates that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited by the content herein.

"At least one of A, B and C" has the same meaning as "at least one of A, B or C" and includes the following combinations of A, B and C: A only, B only, C only, A and B The combination of A and C, the combination of B and C, and the combination of A, B and C.

The use of "suitable for" or "configured to" in this document implies open and inclusive language that does not exclude devices that are suitable for or configured to perform additional tasks or steps.

In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outside", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, and are not indicated or implied. The devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application.

With the widespread use of air conditioners, users' environmental requirements for air conditioners are also constantly increasing. The refrigeration cycle of air conditioners is inseparable from refrigerants. For example, R290 refrigerant does not pollute the environment. Therefore, R290 refrigerant is widely used in the field of air conditioners. However, R290 refrigerant is flammable. When R290 refrigerant leaks, there are safety risks, such as explosion.

Normally, air conditioners are equipped with anti-disassembly structures and warning labels. For example, setting up an anti-disassembly structure on an air conditioner can prevent the air conditioner from being disassembled in the indoor environment and prevent refrigerant from leaking into the indoor environment due to artificial disassembly. Posting a warning label on the air conditioner or near where the air conditioner is installed can remind indoor residents of the dangers of refrigerant leakage.

However, it is understandable that the above settings cannot completely avoid refrigerant leakage during operation of the air conditioner. For example, an anti-disassembly structure on the air conditioner can prevent the air conditioner from being disassembled again indoors, thereby preventing refrigerant leakage due to poor reassembly of the air conditioner. However, if there is refrigerant leakage when the air conditioner is first installed, installing an anti-disassembly structure on the air conditioner cannot effectively prevent refrigerant leakage. In addition, posting warning labels can only remind people who pay attention to the content of the warning labels, but the effect on people who do not pay attention is very limited.

Methods to detect refrigerant leaks include pressure testing and leak detection agent methods.

For example, when using the pressure test method to detect refrigerant leakage, one or more pressure gauges need to be installed in the refrigerant circuit of the air conditioner. When any pressure gauge detects a rapid decrease in the refrigerant pressure in the refrigerant circuit, , it can be judged that the refrigerant is leaking. However, the pressure test method cannot determine the location of refrigerant leakage, and when the degree of refrigerant leakage is low, it is impossible to make an accurate judgment on the refrigerant leakage situation.

For example, when using the leak detection agent method to detect refrigerant leakage, a leak detection agent needs to be added to the refrigerant circuit. The leak detection agent can dye the refrigerant. In this way, when the refrigerant leaks, the leak detection agent will follow. It leaks out together with the refrigerant, thereby alerting the user. However, adding a leak detector to the refrigerant may cause a decrease in the performance of the refrigerant, such as a decrease in the cooling capacity of the refrigerant. If the leak detector leaks together with the refrigerant, it may cause greater safety hazards.

Some embodiments of the present disclosure provide an air conditioner 1000. As shown in FIG. 1, the air conditioner 1000 includes an outdoor unit 1, an indoor unit 2 and an expansion valve 3. The outdoor unit 1 includes a compressor 11 and an outdoor heat exchanger 12 . The indoor unit 2 includes an indoor heat exchanger 21 . The expansion valve 3 may be provided in the outdoor unit 1 or the indoor unit 2 .

The outdoor heat exchanger 12 and the indoor heat exchanger 21 may function as evaporators or condensers. For example, when the outdoor heat exchanger 12 uses When the indoor heat exchanger 21 is used as an evaporator and the indoor heat exchanger 21 is used as a condenser, the air conditioner 1000 operates a heating cycle. When the outdoor heat exchanger 12 functions as a condenser and the indoor heat exchanger 21 functions as an evaporator, the air conditioner 1000 operates a refrigeration cycle.

The air conditioner 1000 performs a refrigeration cycle or a heating cycle through the compressor 11, the condenser, the expansion valve 3, and the evaporator. Refrigeration cycle and heating cycle include compression process, condensation process, expansion process and evaporation process. During each process of the refrigeration cycle and the heating cycle, cooling or heat is provided to the indoor space through the heat absorption or release of the refrigerant, thereby regulating the temperature of the indoor space.

The compressor 11 compresses the refrigerant gas into a high-temperature and high-pressure state and discharges the refrigerant gas from the compressor 11 . The refrigerant gas compressed by the compressor 11 flows into the condenser. The condenser condenses the compressed high-temperature and high-pressure gaseous refrigerant into liquid refrigerant, and the heat of the refrigerant is released to the surrounding environment through the condensation process.

The liquid refrigerant flowing out from the condenser enters the expansion valve 3, and the expansion valve 3 expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into low-pressure liquid refrigerant. The low-pressure liquid refrigerant flowing out from the expansion valve 3 enters the evaporator. When the liquid refrigerant flows through the evaporator, it absorbs heat and evaporates into low-temperature and low-pressure refrigerant gas. The low-temperature and low-pressure refrigerant gas returns to the compressor 11 .

The evaporator can achieve the refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. During the circulating flow of the refrigerant, the air conditioner 1000 can adjust the temperature of the indoor space.

In some embodiments, as shown in Figures 2 and 3, the air conditioner 1000 further includes a pipeline 4, a first solenoid valve 51, a second solenoid valve 52, a first stop valve 61, a second stop valve 62 and a four-way Valve 7.

The pipeline 4 is configured to connect the indoor heat exchanger 21 , the outdoor heat exchanger 12 , the compressor 11 , the expansion valve 3 , the first solenoid valve 51 , the second solenoid valve 52 , the first stop valve 61 , and the second stop valve 62 Connect with four-way valve 7 to form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with the air through the outdoor heat exchanger 12 and the indoor heat exchanger 21 respectively to realize the refrigeration cycle or the heating cycle of the air conditioner 1000 .

The expansion valve 3 is connected between the indoor heat exchanger 21 and the outdoor heat exchanger 12 and is configured to expand the liquid refrigerant that has undergone the condensation process into a low-pressure liquid refrigerant. For example, the expansion valve 3 is an electronic expansion valve.

The first solenoid valve 51 is disposed in the pipeline 4 between the expansion valve 3 and the indoor heat exchanger 21 and is configured to regulate the flow rate of the flowing medium in the pipeline 4 between the expansion valve 3 and the indoor heat exchanger 21 . The first stop valve 61 is disposed in the pipeline 4 between the first solenoid valve 51 and the indoor heat exchanger 21 , and is configured to cut off and throttle the pipeline 4 between the first solenoid valve 51 and the indoor heat exchanger 21 flowing medium in the medium.

The indoor heat exchanger 21 and the outdoor heat exchanger 12 are connected to the compressor 11 respectively. For example, the indoor heat exchanger 21 and the outdoor heat exchanger 12 are connected to the compressor 11 through the four-way valve 7 respectively. The second solenoid valve 52 is disposed in the pipeline 4 between the four-way valve 7 and the indoor heat exchanger 21 , and is configured to regulate the flow medium in the pipeline 4 between the four-way valve 7 and the indoor heat exchanger 21 of traffic. The second stop valve 62 is provided between the second solenoid valve 52 and the indoor heat exchanger 21 , and is configured to cut off and throttle the flow medium in the pipeline 4 between the second solenoid valve 52 and the indoor heat exchanger 21 .

The indoor heat exchanger 21 includes a first communication port 211 and a second communication port 212. The first communication port 211 is connected to the first stop valve 61 , and the second communication port 212 is connected to the second stop valve 62 . The outdoor heat exchanger 12 includes a third communication port 121 and a fourth communication port 122 . The third communication port 121 is connected to the expansion valve 3 , and the fourth communication port 122 is connected to the four-way valve 7 .

The compressor 11 includes a suction port 111 and a discharge port 112. The refrigerant that has absorbed heat and undergone an evaporation process enters the compressor 11 from the suction port 111. The compressor 11 compresses the gaseous refrigerant into a high-temperature and high-pressure state, and then discharges it from the exhaust port 112.

The four-way valve 7 includes a first valve port 71 , a second valve port 72 , a third valve port 73 and a fourth valve port 74 . The first valve port 71 is fixedly connected to the suction port 111 , and the third valve port 73 is fixedly connected to the exhaust port 112 . When the air conditioner 1000 is in cooling mode, the first valve port 71 is connected to the second valve port 72 , and the third valve port 73 is connected to the fourth valve port 74 . When the air conditioner 1000 is in the heating mode, the first valve port 71 is connected to the fourth valve port 74 , and the second valve port 72 is connected to the third valve port 73 .

The air conditioner 1000 also includes an exhaust gas sensor. The exhaust sensor is disposed in the pipeline 4 between the exhaust port 112 and the third valve port 73 and is configured to measure the exhaust temperature of the compressor 11 .

The air conditioner 1000 includes a first working mode (such as cooling mode) and a second working mode (such as heating mode).

When the air conditioner 1000 operates in the first operating mode, the indoor heat exchanger 21 is used as an evaporator, and the outdoor heat exchanger 12 used as a condenser. The compressor 11 compresses the gaseous refrigerant into a high-temperature and high-pressure state, and discharges the high-temperature and high-pressure refrigerant gas from the exhaust port 112 . The high-temperature and high-pressure refrigerant gas enters the outdoor heat exchanger 12 through the four-way valve 7 and the fourth communication port 122, and is condensed in the outdoor heat exchanger 12 to release the heat of the refrigerant to the surrounding environment. The high-temperature and high-pressure refrigerant gas changes from gas to liquid through the condensation process, and flows into the expansion valve 3 through the third communication port 121 . The expansion valve 3 expands high-pressure liquid refrigerant into low-pressure liquid refrigerant.

The liquid refrigerant flowing out from the expansion valve 3 flows into the indoor heat exchanger 21 via the first solenoid valve 51 , the first stop valve 61 and the first communication port 211 . The low-pressure liquid refrigerant evaporates in the indoor heat exchanger 21 to exchange heat with the indoor environment, and absorbs heat to change from liquid to gas. The low-temperature and low-pressure refrigerant gas enters the compressor 11 through the second communication port 212, the second stop valve 62, the second solenoid valve 52, the four-way valve 7 and the suction port 111. The compressor 11 again compresses the refrigerant gas from a low-temperature and low-pressure state into a high-temperature and high-pressure state, and discharges the refrigerant gas from the exhaust port 112 . The high-temperature and high-pressure refrigerant gas enters the outdoor heat exchanger 12 again through the four-way valve 7 and the fourth communication port 122 , and is condensed again in the outdoor heat exchanger 12 .

In this way, when the air conditioner 1000 is operating in the first operating mode, by consuming the electric energy supplied to the compressor 11, the refrigerant flowing through the indoor heat exchanger 21 absorbs heat, thereby lowering the temperature of the indoor environment.

When the air conditioner 1000 operates in the second operating mode, the indoor heat exchanger 21 is used as a condenser and the outdoor heat exchanger 12 is used as an evaporator. The compressor 11 compresses the gaseous refrigerant into a high-temperature and high-pressure state, and discharges the high-temperature and high-pressure refrigerant gas from the exhaust port 112 . The high-temperature and high-pressure refrigerant gas enters the indoor heat exchanger 21 through the four-way valve 7, the second solenoid valve 52, the second stop valve 62 and the second communication port 212, and is condensed in the indoor heat exchanger 21 to convert the refrigeration gas into the indoor heat exchanger 21. The heat of the agent is released into the indoor environment, causing the indoor temperature to rise. The high-temperature and high-pressure refrigerant gas changes from gas to liquid through the condensation process, and flows into the expansion valve 3 through the first communication port 211 , the first stop valve 61 and the first solenoid valve 51 . The expansion valve 3 expands high-pressure liquid refrigerant into low-pressure liquid refrigerant.

The liquid refrigerant flowing out of the expansion valve 3 flows into the outdoor heat exchanger 12 via the third communication port 121 . The low-pressure liquid refrigerant evaporates in the outdoor heat exchanger 12 to absorb heat from the outdoor environment, so that the low-pressure liquid refrigerant evaporates into low-temperature and low-pressure refrigerant gas. The low-temperature and low-pressure refrigerant gas enters the compressor 11 through the fourth communication port 122 , the four-way valve 7 and the suction port 111 . The compressor 11 again compresses the refrigerant gas from a low-temperature and low-pressure state into a high-temperature and high-pressure state, and discharges the refrigerant gas from the exhaust port 112 . The high-temperature and high-pressure refrigerant gas again enters the indoor heat exchanger 21 through the four-way valve 7, the second solenoid valve 52, the second stop valve 62 and the second communication port 212 for the condensation process.

In this way, when the air conditioner 1000 is operating in the second operating mode, the refrigerant flowing through the indoor heat exchanger 21 is dissipated by consuming the electric energy supplied to the compressor 11 to increase the temperature of the indoor environment.

In some embodiments, as shown in FIG. 4 , the air conditioner 1000 further includes a concentration sensor 8 and a controller 9 . The concentration sensor 8 is provided on the indoor unit 2 and is located at a location where refrigerant leakage is likely to occur in the indoor unit 2 . For example, referring to FIG. 2 or FIG. 3 , the concentration sensor 8 is provided at the connection between the indoor heat exchanger 21 and the second stop valve 62 , or at the connection between the first stop valve 61 and the indoor heat exchanger 21 . The concentration sensor 8 is configured to detect the current concentration value A of the refrigerant, and send a signal representing the current concentration value A (ie, the concentration value) to the controller 9. For example, the concentration sensor 8 will detect the current concentration value A representing the refrigerant. The signal is sent to the controller 9. The controller 9 is connected to the compressor 11 and the concentration sensor 8 respectively, and is configured to receive signals from the concentration sensor 8 .

FIG. 5 is a flow chart of the controller 9 of the air conditioner 1000 according to some embodiments. As shown in FIG. 5 , the controller 9 is configured to perform steps 101 to 106 .

In step 101, when the current concentration value A of the refrigerant is greater than or equal to a preset first concentration threshold, it is determined that the refrigerant leaks.

In some embodiments, as shown in FIG. 4 , the concentration sensor 8 includes a control component 81 . The control component 81 is configured to determine whether refrigerant leakage occurs based on the current concentration value A of the refrigerant detected by the concentration sensor 8, and if it is determined that the refrigerant leakage occurs, send a signal representing the refrigerant leakage to the controller 9 .

For example, when the concentration sensor 8 detects that the current concentration value A of the indoor refrigerant is greater than or equal to the first concentration threshold, the control component 81 determines that refrigerant leakage occurs and sends a signal representing the refrigerant leakage to the controller 9 . In this case, the controller 9 receives the signal representing refrigerant leakage and determines that refrigerant leakage occurs. When the concentration sensor 8. When detecting that the current concentration value A of the indoor refrigerant is less than the first concentration threshold, the control component 81 determines that the refrigerant has not leaked and does not send a signal representing refrigerant leakage to the controller 9.

It should be noted that the first concentration threshold is a value preset in the control component 81, and the first concentration threshold can be adjusted according to actual needs, and this disclosure does not limit this.

For example, the first concentration threshold is less than the lowest concentration value at which the refrigerant may explode in an indoor environment. The refrigerant concentration value that does not cause explosion in the indoor environment can be obtained from experimental results.

It can be understood that by setting the first concentration threshold to be less than the lowest concentration value at which the refrigerant may explode in an indoor environment, an alarm can be issued and the refrigerant recovery mode can be executed when the refrigerant leakage is small, thereby reducing the risk of refrigerant leakage. Explosion risk from leakage.

In some embodiments, the first concentration threshold is preset in the controller 9 . The controller 9 receives a signal representing the current concentration value A of the refrigerant sent by the concentration sensor 8, and determines whether the refrigerant leaks based on the signal. For example, the concentration sensor 8 detects the current concentration value A of the refrigerant, and sends a signal representing the current concentration value A of the refrigerant to the controller 9. The controller 9 determines whether the refrigerant leaks based on the signal.

For example, when the controller 9 receives a signal representing the current concentration value A of the refrigerant sent by the concentration sensor 8, the controller 9 determines whether the current concentration value A of the refrigerant is greater than or equal to the first concentration threshold based on the signal. When the current concentration value A of the refrigerant is greater than or equal to the first concentration threshold, the controller 9 determines that the refrigerant leaks. When the current concentration value A of the refrigerant is less than the first concentration threshold, the controller determines that the refrigerant does not leak.

In step 102, when it is determined that refrigerant leakage occurs, the air conditioner 1000 is controlled to operate the refrigerant recovery mode.

For example, during the operation of the air conditioner 1000, when the controller 9 receives a signal representing the refrigerant leakage sent by the concentration sensor 8, or when the controller 9 receives a signal representing the current concentration value A of the refrigerant sent by the concentration sensor 8, signal, and determines that the current concentration value A of the refrigerant is greater than or equal to the first concentration threshold, the controller 9 determines that refrigerant leakage occurs. In the case where the controller 9 determines that refrigerant leakage occurs, the controller 9 controls the air conditioner 1000 to operate the refrigerant recovery mode.

In some embodiments, the refrigerant recovery mode includes a first recovery mode and a second recovery mode. When the air conditioner 1000 operates in the first operating mode and the indoor heat exchanger 21 is used as an evaporator, the air conditioner 1000 simultaneously operates the first recovery mode to recover leaked refrigerant. When the air conditioner 1000 operates in the second operating mode and the indoor heat exchanger 21 is used as a condenser, the air conditioner 1000 simultaneously operates the second recovery mode to recover leaked refrigerant.

The controller 9 is also configured to determine the current working mode of the air conditioner 1000 when it is determined that the refrigerant leaks, and control the air conditioner 1000 to run the first recovery mode or the second recovery mode according to the current working mode of the air conditioner 1000 .

When the controller 9 controls the air conditioner 1000 to operate in the first recovery mode, the indoor heat exchanger 21 works as an evaporator, and the controller 9 controls the compressor 11 to operate at the target operating frequency F1. When the controller 9 controls the air conditioner 1000 to operate in the second recovery mode, the indoor heat exchanger 21 switches from operating as a condenser to operating as an evaporator, and the controller 9 controls the compressor 11 to operate at the target operating frequency F1.

It should be noted that the target operating frequency F1 is a value preset in the controller 9, and the target operating frequency F1 can be adjusted according to actual needs, and this disclosure does not limit this. For example, the target operating frequency F1 can be tested based on experimental results, or can be calculated based on simulation experiments or theory.

In step 103, an instruction signal from the control device is received.

In some embodiments, the air conditioner 1000 further includes a control device coupled to the controller and configured to send an indication signal to the controller 9 . The control device includes at least one of a remote control or a mobile device. The mobile device is, for example, a mobile phone, a tablet computer, etc. Remote control software is pre-installed in the mobile device, and the remote control software corresponds to the air conditioner 1000 and includes at least one of an application program and software for Bluetooth communication technology (ie, Bluetooth software).

The indication signals include indication signals for instructing the air conditioner 1000 to turn on or off, and indication signals for instructing the air conditioner 1000 to change parameters. The parameters of the air conditioner 1000 include wind direction parameters, temperature parameters, etc.

For example, the user can send an instruction signal to the controller 9 for instructing the air conditioner 1000 to turn on or off through the control device, and the controller 9 controls the air conditioner 1000 to turn on in response to the instruction signal from the control device. or close. Alternatively, the user can send an instruction signal to the controller 9 for instructing the air conditioner 1000 to change the wind direction through the control device, and the controller 9 controls the air conditioner 1000 to change the wind direction in response to the instruction signal from the control device.

In step 104, it is determined whether the instruction signal is an instruction signal for instructing the air conditioner 1000 to turn on or off. If yes, step 105 is executed. If not, step 106 is executed.

In some embodiments, during the operation of the air conditioner 1000, when the controller 9 receives a signal representing refrigerant leakage sent by the concentration sensor 8, or when the controller 9 receives a signal representing refrigerant leakage sent by the concentration sensor 8, When the signal of the current concentration value A of the refrigerant is determined to be greater than or equal to the first concentration threshold, the controller 9 determines that the refrigerant leaks and controls the air conditioner 1000 to run the refrigerant recovery mode. When the air conditioner 1000 operates in the refrigerant recovery mode, the indoor heat exchanger 21 works as an evaporator, and the compressor 11 operates at the target operating frequency F1, the controller 9 receives any indication signal from the control device and determines the Whether the indication signal is an indication signal for instructing the air conditioner 1000 to turn on or off.

In step 105, the air conditioner 1000 is controlled to perform the operation indicated by the indication signal.

In step 106, the air conditioner 1000 is controlled to continue operating the refrigerant recovery mode.

In some embodiments, when the air conditioner 1000 operates in the refrigerant recovery mode, the controller 9 receives any indication signal from the control device and determines whether the indication signal is used to instruct the air conditioner 1000 to turn on or off. Indicative signal.

When the controller 9 determines that the indication signal is an indication signal for instructing the air conditioner 1000 to turn on or off, the controller 9 controls the air conditioner 1000 to turn on or off. When the controller 9 determines that the indication signal is not an indication signal for instructing the air conditioner 1000 to turn on or off, the controller 9 controls the air conditioner 1000 to continue operating the refrigerant recovery mode without performing the operation indicated by the indication signal.

It can be understood that when the air conditioner 1000 operates in the refrigerant recovery mode, the controller 9 only controls the air conditioner 1000 to turn on or off in response to an instruction signal from the control device for instructing the air conditioner 1000 to turn on or off. . In this way, the air conditioner 1000 can be prevented from performing operations other than turning on or off when running the refrigerant recovery mode, which is helpful to avoid interference with the refrigerant recovery mode and reduce safety hazards caused by refrigerant leakage.

For example, when the air conditioner 1000 operates in the refrigerant recovery mode, and the controller 9 receives an instruction signal from the control device for instructing the air conditioner 1000 to turn on, the controller 9 controls the air conditioner 1000 to keep operating the refrigerant recovery mode, This is to avoid interference with the refrigerant recovery mode and reduce safety hazards caused by refrigerant leakage.

When the air conditioner 1000 operates in the refrigerant recovery mode, and the controller 9 receives an instruction signal from the control device for instructing the air conditioner 1000 to shut down, the controller 9 controls the air conditioner 1000 to shut down, which is beneficial to avoid continued leakage of refrigerant. , making the indoor refrigerant concentration too high, thereby reducing the safety hazards caused by excessive refrigerant concentration.

In some embodiments, the indoor unit 2 includes a sound generating device. The sound-generating device includes at least one of a speaker or a buzzer, and is coupled to the controller 9 . The sound-emitting device is configured to emit a sound under the control of the controller 9 to remind the user that the air conditioner 1000 is in the refrigerant recovery mode. For example, when the user uses the remote control to control the air conditioner 1000 and the air conditioner 1000 is in the refrigerant recovery mode, the indoor unit 2 will emit a sound to remind the user, and the air conditioner 1000 will not operate according to the instruction signal from the remote control. Adjustment.

In some embodiments, the sound emitted by the indoor unit 2 when the air conditioner 1000 is in the refrigerant recovery mode is different from the sound when the air conditioner 1000 is not in the refrigerant recovery mode, so as to facilitate user distinction.

In some embodiments, the remote control software is also used to remind the user that the air conditioner 1000 is in a refrigerant leakage state, to remind the user that the refrigerant is leaking, and to remind the user to cautiously turn on the live equipment, thereby reducing the safety risks caused by the refrigerant leakage. .

For example, when the user remotely controls the air conditioner 1000 through the remote control software and the current concentration value A of the refrigerant is greater than or equal to the first concentration threshold, the remote control software displays a message representing " "Air conditioner 1000 is in a refrigerant leakage state" message to remind the user that the refrigerant is leaking and to be careful when opening live equipment.

In some embodiments, the indoor unit 2 further includes a front panel including a refrigerant alarm light. The refrigeration The refrigerant warning light is coupled to the controller 9 and is configured to be turned on when refrigerant leaks.

For example, when it is determined that the refrigerant leaks, the controller 9 controls the refrigerant alarm light to turn on to remind the user that the refrigerant leaks, so that the user can reduce the opening of electrified equipment, thereby reducing the safety risks caused by the refrigerant leakage.

In some embodiments, when the air conditioner 1000 operates in the refrigerant recovery mode, the indoor heat exchanger 21 works as an evaporator, and the compressor 11 operates at the target operating frequency F1, the refrigerant in the outdoor heat exchanger 12 passes through the first electromagnetic The valve 51 flows into the indoor heat exchanger 21, and then flows into the outdoor heat exchanger 12 again via the second solenoid valve 52 and the compressor 11. In this way, the recovered refrigerant will enter the indoor heat exchanger 21 again and leak again. Therefore, it is necessary to close the first solenoid valve 51 to cut off the source of refrigerant flowing into the indoor heat exchanger 21 so that the recovered refrigerant will not leak again.

As shown in FIG. 4 , the first solenoid valve 51 is coupled with the controller 9 . The controller 9 is also configured to control the first solenoid valve 51 to open and close. For example, when the air conditioner 1000 is running in the first recovery mode or the second recovery mode, and the air conditioner 1000 is in the cooling mode, and the compressor 11 is running at the target operating frequency F1, the controller 9 controls the first solenoid valve 51 to close, so that the outdoor The refrigerant in the machine 1 cannot flow to the indoor unit 2 through the first solenoid valve 51 , thereby cutting off the source of the refrigerant in the indoor unit 2 .

In some embodiments, during the operation of the air conditioner 1000, when the air conditioner 1000 operates in the refrigerant recovery mode, the controller 9 controls the first solenoid valve 51 to close to cut off the source of the refrigerant in the indoor heat exchanger 21. , and the controller 9 also controls the air conditioner 1000 to run the refrigerant dilution mode to dilute the indoor refrigerant concentration and reduce the safety hazard caused by excessive refrigerant concentration. As shown in FIG. 6 , after the controller 9 performs step 102 , the controller 9 is further configured to perform steps 201 to 205 .

In step 201, the first solenoid valve 51 is controlled to close.

For example, when the air conditioner 1000 operates in the refrigerant recovery mode, the controller 9 controls the first solenoid valve 51 to close, so that the refrigerant in the outdoor unit 1 cannot flow to the indoor heat exchanger 21 through the first solenoid valve 51, thereby cutting off the indoor heat exchanger 21. The source of the refrigerant in the heat exchanger 21.

In step 202, the damper and damper are controlled to be in the maximum air outlet state, the indoor fan is controlled to be turned on, and the fresh air fan is controlled to be turned on.

In some embodiments, the air conditioner 1000 also includes a damper, an indoor fan, and a fresh air system. The fresh air system includes a damper and a fresh air fan. The fresh air system is used to form fresh outdoor air and send it indoors to achieve a certain degree of air exchange. The damper is configured to adjust the outlet state of air conditioning air. The indoor fan is configured to deliver air in the indoor unit 2 to the room. The fresh air blower is configured to transport outdoor air into the room. The damper, the indoor fan, the damper and the fresh air fan are coupled to the controller 9 .

For example, when the air conditioner 1000 operates in the refrigerant recovery mode and the first solenoid valve 51 is closed, the controller 9 is further configured to control the damper and the damper to be in the maximum air outlet state. When the damper is in the maximum air outlet state, the air supply resistance of the indoor unit 2 can be reduced, and the speed of refrigerant dispersion in the indoor space can be accelerated to achieve dilution of the refrigerant, thus helping to reduce the safety hazards caused by excessive refrigerant concentration. Hidden danger. When the air valve is in the maximum air outlet state, the resistance when outdoor air enters the room can be reduced, thereby speeding up the dilution of the refrigerant, which is beneficial to reducing safety hazards caused by excessive refrigerant concentration.

When the air conditioner 1000 operates in the refrigerant recovery mode and the first solenoid valve 51 is closed, the controller 9 is also configured to control the indoor fan and the fresh air fan to turn on, so that the outdoor air passes through the air conditioner 1000 and enters the room. Thereby diluting the leaked refrigerant in the indoor air, reducing the concentration of the leaked refrigerant in the indoor air, and reducing the safety hazards caused by excessive refrigerant concentration.

In step 203, the indoor fan is controlled to run at a working speed greater than or equal to the first preset speed M, and the fresh air fan is controlled to run at a working speed greater than or equal to the second preset speed N.

In some embodiments, when the indoor fan is turned on, the controller 9 is also configured to control the indoor fan to run at a working speed greater than or equal to the first preset speed M, so that the indoor heat exchanger 21 The refrigerant is evaporated relatively quickly and then enters the compressor 11, thereby improving the recovery efficiency of the refrigerant. For example, when the indoor fan is turned on, the controller 9 controls the indoor fan to run at a working speed that is 1.5 times the first preset speed M.

When the fresh air system is turned on, the controller 9 is also configured to control the fresh air fan to run at a working speed greater than or equal to the second preset speed N, so that the outdoor wind enters the room quickly, thereby improving dilution refrigeration. agent efficiency. For example, when the fresh air fan is turned on, the controller 9 controls the fresh air fan to run at a working speed that is twice the second preset speed N.

It should be noted that the higher the working speed of the indoor fan, the higher the efficiency of refrigerant evaporation and heat release in the indoor heat exchanger 21 . The first preset rotation speed M is greater than the second preset rotation speed N, and the first preset rotation speed M is 8 to 12 times of the second preset rotation speed N. For example, the first preset rotation speed M is 8 times, 10 times or 12 times the second preset rotation speed N. The first preset rotation speed M and the second preset rotation speed N are values preset in the controller 9, and the first preset rotation speed M and the second preset rotation speed N can be adjusted according to actual needs. This disclosure does not Make limitations.

In step 204, a signal representing the current concentration value A of the refrigerant is received from the concentration sensor 8, and it is determined that the current concentration value A of the refrigerant is less than or equal to the preset dilution concentration value B, and maintained for the preset time Tw.

In some embodiments, the concentration sensor 8 detects the current concentration value A of the refrigerant, and sends a signal representing the current concentration value A of the refrigerant to the controller 9 . The controller 9 receives a signal representing the current concentration value A of the refrigerant sent by the concentration sensor 8, and determines the relationship between the current concentration value A of the refrigerant and the preset dilution concentration value B. When the current concentration value A of the refrigerant is less than or equal to the preset dilution concentration value B and remains for the preset time Tw, the controller 9 determines that the dilution process of the refrigerant has been completed.

It should be noted that the preset time Tw and the preset dilution concentration value B are values preset in the controller 9, and the preset time Tw and the preset dilution concentration value B can be adjusted according to actual needs. This disclosure is No restrictions.

The preset time Tw can be tested based on experimental results or calculated based on theoretical analysis. For example, the preset time Tw is set to 10 minutes. That is to say, if the current concentration value A of the refrigerant has remained less than or equal to the preset dilution concentration value B for 10 minutes, it can be considered that the dilution process of the refrigerant is completed. In addition, the preset time Tw can be adjusted according to actual needs, which can avoid the preset time Tw being too long and preventing the fresh air fan and the indoor fan from maintaining a high speed for too long, thereby reducing the risk of the new air fan and the indoor fan. Indoor fan wear and tear, extending service life.

In some embodiments, the preset dilution concentration value B is preset in the control component 81 of the concentration sensor 8 rather than in the controller 9 . The control component 81 is further configured to determine the relationship between the current concentration value A of the refrigerant and the preset dilution concentration value B based on the signal of the current concentration value A of the refrigerant detected by the concentration sensor 8, and determine the current concentration value A of the refrigerant. When the concentration value A is less than or equal to the preset dilution concentration value B, a signal indicating that the current concentration value A of the refrigerant is less than or equal to the preset dilution concentration value B is sent to the controller 9 . In this way, the amount of preset programs of the controller 9 can be reduced and the speed of the controller 9 executing steps can be accelerated.

For example, the control component 81 determines the relationship between the current concentration value A of the refrigerant and the preset dilution concentration value B based on the signal of the current concentration value A of the refrigerant detected by the concentration sensor 8 . When the current concentration value A of the refrigerant is less than or equal to the preset dilution concentration value B, the control component 81 sends a signal to the controller 9 indicating that the current concentration value A of the refrigerant is less than or equal to the preset dilution concentration value B.

When the controller 9 receives a signal from the control component 81 indicating that the current concentration value A of the refrigerant is less than or equal to the preset dilution concentration value B and maintains the preset time Tw, the controller 9 determines that the dilution process of the refrigerant has been completed.

When the concentration sensor 8 detects that the current concentration value A of the indoor refrigerant is greater than the preset dilution concentration value B, the control component 81 does not send a signal to the controller 9 representing that the current concentration value A of the refrigerant is less than or equal to the preset dilution concentration value B. Signal.

In step 205, the operating speed of the fresh air fan is controlled to decrease to 0 at a first speed V1, and the operating speed of the indoor fan is controlled to decrease to 0 at a second speed V2.

For example, when the current concentration value A of the refrigerant is less than or equal to the preset dilution concentration value B and maintained for the preset time Tw, the controller 9 determines that the refrigerant has completed dilution. When the controller 9 determines that the refrigerant has completed dilution, the controller 9 is also configured to control the working speed of the fresh air fan to reduce to 0 at a first speed V1, and to control the working speed of the indoor fan at a second speed V2. reduced to 0.

It should be noted that the working speed of the fresh air fan is reduced to 0 at the first rate V1, so that the working speed of the fresh air fan is reduced, thereby avoiding parts damage caused by direct shutdown of the fresh air fan, which is beneficial to extending the the new The service life of the fan.

The working speed of the indoor fan is reduced to 0 at the second speed V2, so that the working speed of the indoor fan is reduced, thereby avoiding parts damage caused by direct shutdown of the indoor fan, which is beneficial to prolonging the service life of the new fan. service life.

It can be understood that the first preset rotation speed M is greater than the second preset rotation speed N, and the first preset rotation speed M is 8 to 12 times of the second preset rotation speed N. When the indoor fan runs at a working speed 1.5 times the first preset speed M, the fresh air fan runs at a working speed 2 times the second preset speed N, and the indoor fan and the fresh air fan When the working speed decreases to 0 in the same time, the second speed V2 is greater than the first speed V1, and the second speed V2 is 6 to 9 times of the first speed V1. For example, the second rate V2 is 6 times, 7.5 times or 9 times the first rate V1.

In some embodiments, during the operation of the air conditioner 1000, when the air conditioner 1000 operates in the refrigerant recovery mode, the controller 9 controls the first solenoid valve 51 to close to cut off the source of the refrigerant in the indoor heat exchanger 21, And the controller 9 also controls the air conditioner 1000 to run the refrigerant dilution mode to dilute the indoor refrigerant concentration. As shown in Figure 7, when the controller 9 performs step 202, the controller 9 is also configured to perform step 203A.

In step 203A, the first air guide plate 23 is controlled to rotate to a preset air supply angle β, and the second air guide plate 24 is controlled to swing at a preset swing frequency V3.

In some embodiments, as shown in FIG. 8 , the indoor unit 2 further includes an air outlet 22 , at least one first air guide plate 23 and at least one second air guide plate 24 . The first air guide plate 23 and the second air guide plate 24 are respectively disposed at the air outlet 22 .

The indoor unit 2 supplies air to the room through the air outlet 22 . The first air guide plate 23 extends along the length direction of the indoor unit 2 (ie, the left-right direction as shown in FIG. 8 ). The first air guide plate 23 is configured to rotate to adjust the air outlet angle of the indoor unit 2 in the vertical direction of the indoor space (see FIG. 8 , that is, the up and down direction of the indoor unit 2).

The second air guide plate 24 extends along the height direction of the indoor unit 2 (that is, the up and down direction as shown in FIG. 8 ), or the extension direction of the second air guide plate 24 is inclined to the height direction of the indoor unit 2 . The second air guide plate 24 is configured to rotate to adjust the air outlet angle of the indoor unit 2 in the horizontal direction of the indoor space (see FIG. 8 , that is, the left and right direction of the indoor unit 2). The air conditioner 1000 uses the first air guide plate 23 and the second air guide plate 24 to change the air supply angle and position of the air conditioning air.

In some embodiments, the indoor unit 2 includes at least two first air guide plates 23 and at least two second air guide plates 24 . At least two first air guide plates 23 are spaced apart and arranged at the air outlet 22 along the height direction of the indoor unit 2 . At least two second air guide plates 24 are disposed between any two first air guide plates 23 and are spaced apart along the length direction of the indoor unit 2 .

The air conditioner 1000 also includes an electronic control system that may be located in an upper portion of the indoor space. The electronic control system is coupled to power frequency alternating current (AC). When the electric control system is powered by industrial frequency alternating current, if the air supply from the indoor unit 2 carries refrigerant and blows directly to the electronic control system, the refrigerant carried in the air supply may enter the electronic control system. , and was ignited by the electric spark in the electronic control system, causing potential safety hazards. When the first air guide plate 23 rotates to the preset air supply angle β, the air-conditioned air blown out from the air outlet 22 blows directly to the lower part of the indoor space to reduce the probability of the air-conditioned air blowing to the electronic control system.

It should be noted that the preset air supply angle β is a value preset in the controller 9 . The air conditioner 1000 operates in the refrigerant dilution mode and also in the refrigerant recovery mode. In this case, the refrigerant in the indoor heat exchanger 21 is still leaking. That is to say, when the air flowing through the indoor heat exchanger 21 is blown indoors by the indoor fan, it will carry the leaked refrigerant, so that the air-conditioned air blown out from the air outlet 22 will carry the refrigerant.

For example, when the indoor fan is turned on, the controller 9 controls the first air guide plate 23 to rotate to the air supply angle β, so that the air-conditioned air carrying the refrigerant blows directly to the ground, so as to reduce the risk of the air-conditioned air coming into contact with the electronic control system. probability, thereby reducing the potential safety hazard of explosion when refrigerant comes into contact with the electronic control system.

It can be understood that since the refrigerant recovery mode is performed under refrigeration conditions, the air-conditioned air blown out by the indoor unit 2 has a lower temperature and a higher density, so that the air-conditioned air carrying leaked refrigerant can be collected indoors. the lower side of the space, thereby reducing the probability of refrigerant coming into contact with the electronic control system.

In some embodiments, the preset swing frequency V3 of the second air guide plate 24 is preset in the controller 9 . When the controller 9 controls the second air guide plate 24 to swing at the preset swing frequency V3, the air supply from the indoor unit 2 can be evenly distributed in the horizontal direction of the indoor space. In this way, it can be avoided that the indoor unit 2 continues to blow air to the fixed position, causing the fixed position to be The concentration of refrigerant increases, causing safety hazards.

In some embodiments, during the swing of the second air guide plate 24 at the preset swing frequency V3, the second air guide plate 24 swings in the first direction to the first limit angle and maintains the first preset time T1, Then it swings in the second direction to the second limit angle and maintains the second preset time T2. The first direction and the second direction are parallel to the length direction of the indoor unit 2 (ie, the left-right direction as shown in FIG. 8 ), and the second direction is opposite to the first direction.

For example, the second air guide plate 24 swings to the left side of the indoor unit 2 in the length direction to the first limit angle, maintains this angle for the first preset time T1, and then supplies air to the indoor unit 2 The right side swings to the second limit angle, and maintains the air supply at this angle within the second preset time T2, so that the air supply of the indoor unit 2 is evenly distributed in the horizontal direction of the indoor space to avoid carrying refrigerant. The air-conditioning air continuously supplies air to a fixed location, causing an increase in the refrigerant concentration at the fixed location, posing safety risks.

It should be noted that the first preset time T1 and the second preset time T2 are values preset in the controller 9 and can be calculated based on the structural properties of the air conditioner 1000 or tested based on experimental results. This disclosure does not limit this.

In some embodiments, during the operation of the air conditioner 1000, the second air guide plate 24 is also configured to periodically swing along the length direction of the indoor unit 2, so that the air supplied by the indoor unit 2 can be circulated in the indoor space. evenly distributed in the horizontal direction. The second air guide plate 24 swings from the initial position along the first direction to the first limit angle, then swings along the second direction to the second limit angle, and then swings along the first direction to the second limit angle. The initial position is one period of the periodic swing.

For example, when the second air guide plate 24 swings at the preset swing frequency V3, the second air guide plate 24 swings periodically along the length direction of the indoor unit 2 . That is, the second air guide plate 24 swings from the initial position along the first direction to the first limit angle and maintains it for the first preset time T1, and then swings along the second direction to the second limit angle and maintains it. for a second preset time T2, and then swing along the first direction via the initial position to the first limit angle again and maintain the first preset time T1 again.

Those skilled in the art will understand that the disclosed scope of the present invention is not limited to the specific embodiments described above, and that certain elements of the embodiments may be modified and replaced without departing from the spirit of the application. The scope of the application is limited by the appended claims.

Claims

An air conditioner, including:

indoor heat exchanger;

outdoor heat exchanger;

compressor;

a concentration sensor configured to detect the concentration value of the refrigerant in the room;

a control device configured to send an indication signal; and

Controller, configured as:

Obtain the concentration value of the refrigerant detected by the concentration sensor;

When the concentration value is greater than or equal to the preset first concentration threshold and the indoor heat exchanger works as an evaporator, control the compressor to operate at a preset target operating frequency; and

When the instruction signal from the control device is received, only the instruction signal for instructing the air conditioner to turn on or off is executed.
The air conditioner according to claim 1, wherein the control device is further configured to prompt a user that the air conditioner is in a refrigerant state when the concentration value of the refrigerant is greater than or equal to the preset first concentration threshold value. leak status.
The air conditioner according to claim 1 or 2, further comprising:

Expansion valve; and

A first solenoid valve is provided on the pipeline between the expansion valve and the indoor heat exchanger;

Wherein, the controller is further configured to control the first solenoid valve to close when the concentration value is greater than or equal to the first concentration threshold.
The air conditioner according to claim 1, further comprising:

Fresh air fans configured to move outdoor air into the room; and

an indoor fan configured to deliver air in the indoor unit to the room;

Wherein, the controller is further configured to control the indoor fan to run at an operating speed greater than or equal to the first preset speed when the concentration value of the refrigerant is greater than or equal to the first concentration threshold, and control The fresh air blower operates at a working speed greater than or equal to the second preset speed.
The air conditioner according to claim 4, further comprising:

damper; and

damper;

Wherein, the controller is further configured to control the damper and the damper to be in a maximum air outlet state when the concentration value of the refrigerant is greater than or equal to the first concentration threshold.
The air conditioner according to claim 4 or 5, wherein the controller is further configured to, when the concentration value of the refrigerant is greater than or equal to the first concentration threshold, control the fresh air fan to operate at 2 times the The second preset speed operates at the working speed.
The air conditioner according to any one of claims 4 to 6, wherein the controller is further configured to control the indoor fan when the concentration value of the refrigerant is greater than or equal to the first concentration threshold. Run at a working speed that is 1.5 times the first preset speed.
The air conditioner according to any one of claims 4 to 7, wherein the controller is further configured to: when the concentration value of the refrigerant is less than or equal to a preset dilution concentration value and maintained for a preset time, Control the indoor fan and the fresh air fan to reduce the working speed to 0.
The air conditioner according to claim 8, wherein the controller is further configured to control the indoor fan and the fresh air fan to reduce the operating speed to 0, to control the fresh air fan. The working speed is reduced to 0 at a first speed, and the working speed of the indoor fan is controlled to be reduced to 0 at a second speed.
The air conditioner according to claim 1, further comprising an indoor unit, the indoor unit comprising:

air outlet;

At least one first air guide plate is provided at the air outlet and extends along the length direction of the indoor unit; and

At least one second air guide plate is provided at the air outlet and extends along the height direction of the indoor unit;

Wherein, the controller is further configured to control the at least one first air guide plate to rotate to a preset air supply angle when the concentration value of the refrigerant is greater than or equal to the first concentration threshold, and control the At least one second air guide plate swings at a preset swing frequency so that the air-conditioned air blown from the air outlet is distributed in the lower part of the indoor space.
The air conditioner according to claim 10, wherein the indoor unit includes at least two first air guide plates, the at least two first air guide plates are spaced apart along the height direction of the indoor unit. , the at least two first air guide plates are configured to rotate to adjust the air outlet angle of the indoor unit in the vertical direction of the indoor space.
The air conditioner according to claim 11, wherein the indoor unit includes at least two second air guide plates, and the at least two second air guide plates are disposed between any two of the first air guide plates, And arranged at intervals along the length direction of the indoor unit, the second air guide plates are configured to rotate to adjust the air outlet angle of the indoor unit in the horizontal direction of the indoor space.
The air conditioner according to any one of claims 10 to 12, further comprising an electronic control system;

Wherein, when the first air guide plate rotates to the preset air supply angle, the air-conditioned air blown out from the air outlet blows directly to the lower part of the indoor space.
The air conditioner according to any one of claims 10 to 13, wherein during the swing of the second air guide plate at the preset swing frequency, the second air guide plate moves along the first direction. Swing to the first limit angle and maintain the first preset time, then swing in the second direction to the second limit angle and maintain the second preset time;

Wherein, the first direction and the second direction are parallel to the length direction of the indoor unit, and the second direction is opposite to the first direction.
The air conditioner according to any one of claims 3 to 14, wherein the first solenoid valve is configured to regulate the flow medium in the pipeline between the expansion valve and the indoor heat exchanger. flow;

The air conditioner further includes a first stop valve, which is disposed on the pipeline between the first solenoid valve and the indoor heat exchanger and is configured to cut off and throttle the first The flow medium in the pipeline between the solenoid valve and the indoor heat exchanger.
The air conditioner according to claim 15, wherein the air conditioner further includes a four-way valve, and the indoor heat exchanger and the outdoor heat exchanger are respectively connected to the compressor through the four-way valve, so The four-way valve includes a first valve port, a second valve port, a third valve port and a fourth valve port, and the compressor includes a suction port connected to the first valve port and a suction port connected to the third valve port. Connected exhaust port;

When the indoor heat exchanger works as an evaporator, the first valve port is connected to the second valve port, and the third valve port is connected to the fourth valve port;

When the indoor heat exchanger works as a condenser, the first valve port is connected to the fourth valve port, and the second valve port is connected to the third valve port.
The air conditioner according to claim 16, wherein the air conditioner further includes:

A second solenoid valve, the second solenoid valve is disposed on the pipeline between the four-way valve and the indoor heat exchanger, and is configured to regulate all interactions between the four-way valve and the indoor heat exchanger. the flow rate of the flowing medium in the pipeline, and

A second stop valve, the second stop valve is provided on the pipeline between the second solenoid valve and the indoor heat exchanger, and is configured to cut off and throttle the second solenoid valve and the indoor heat exchanger. The flow medium in the pipeline between heat exchangers.
The air conditioner according to claim 17, wherein the indoor heat exchanger includes a first communication port and a second communication port, the first communication port is connected to the first stop valve, and the second communication port is connected to the second stop valve; the outdoor heat exchanger includes a third communication port and a fourth communication port, the third communication port is connected to the expansion valve, and the fourth communication port is connected to the four-way valve connection.