CN110542229A

CN110542229A - air conditioner, control method and device thereof, and computer-readable storage medium

Info

Publication number: CN110542229A
Application number: CN201910866084.XA
Authority: CN
Inventors: 朱兴丹; 徐振坤; 杜顺开; 白崇俨
Original assignee: Midea Group Co Ltd; Guangdong Midea Refrigeration Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2019-12-06

Abstract

The invention provides an air conditioner and a control method, a control device and a computer readable storage medium thereof, wherein a first switch device is arranged on at least one of a first pipeline and a second pipeline and is used for controlling the on-off of the pipeline where the first switch device is arranged; a controller electrically connected to the throttle mechanism, the controller configured to: and responding to a shutdown instruction, closing the throttling mechanism to disconnect the third pipeline so as to prevent the refrigerant in the indoor heat exchanger or the outdoor heat exchanger from migrating out or in. The air conditioner provided by the invention can keep the refrigerant distribution in the distribution state during the stable operation of refrigeration or heating in the shutdown state, can accelerate the establishment of the high-low pressure difference of system balance in the next startup, and reduces the system stabilization time after startup, thereby realizing the rapid refrigeration and heating.

Description

Air conditioner, control method and device thereof, and computer-readable storage medium

Technical Field

the present invention relates to the field of refrigeration equipment, and more particularly, to an air conditioner, a control method thereof, a control device thereof, and a computer-readable storage medium.

Background

When the air conditioner reaches a stable operation state, the refrigerant quantity of the high-pressure side is relatively large, and the refrigerant quantity of the low-pressure side is relatively small. Before the air conditioner is started, the pressure at each part of the system is equal, so that the high-low pressure difference of the system needs to be reestablished for a long time, and the refrigerating and heating speed of the air conditioner is slow after the air conditioner is started. At present, various manufacturers mainly adopt a high-frequency starting or rapid frequency increasing mode of a compressor to increase the refrigerating and heating speed of an air conditioner.

When the compressor is started at a high frequency or is quickly increased in frequency, the refrigerant on the evaporator side is quickly sucked completely in a short time, the refrigerant on the condenser side cannot be completely liquefied in a short time, and an effective liquid seal is difficult to form at the throttling mechanism, so that the refrigerant flow passing through the throttling mechanism is greatly reduced, the refrigerant cannot be timely supplemented to the evaporator side, and the refrigerating and heating speed of the air conditioner is influenced.

disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

To this end, a first aspect of the present invention is directed to an air conditioner.

A second aspect of the invention aims to provide a control method.

A third aspect of the present invention is directed to a control apparatus.

a fourth aspect of the present invention is directed to an air conditioner.

a fifth aspect of the present invention is directed to a computer-readable storage medium.

To achieve the above object, a first aspect of the present invention provides an air conditioner, comprising: a compressor having an exhaust port and an intake port; the reversing component is provided with first to fourth ports, the first port is connected with the exhaust port through a first pipeline, and the third port is connected with the air suction port through a second pipeline; the first end of the outdoor heat exchanger is connected with the second port, and the first end of the indoor heat exchanger is connected with the fourth port; the second end of the outdoor heat exchanger is connected with the second end of the indoor heat exchanger through a third pipeline, and the throttling mechanism is arranged on the third pipeline and used for controlling the on-off of the third pipeline; the first switching device is arranged on at least one of the first pipeline and the second pipeline and is used for controlling the on-off of the pipeline where the first switching device is arranged; a controller electrically connected to the throttle mechanism, the controller configured to: and responding to a shutdown instruction, closing the throttling mechanism to disconnect the third pipeline so as to prevent the refrigerant in the indoor heat exchanger or the outdoor heat exchanger from migrating out or in.

According to the air conditioner provided by the technical scheme, when the air conditioner is shut down, the throttling mechanism is controlled to be closed, the third pipeline is disconnected, the refrigerant in the outdoor heat exchanger or the indoor heat exchanger cannot flow through the third pipeline, and the first switching device is matched to control the on-off state (including the flow direction of the refrigerant during conduction) of the first pipeline or the second pipeline, so that the refrigerant in the indoor heat exchanger or the outdoor heat exchanger is prevented from migrating out, or the refrigerant of the compressor migrates into the indoor heat exchanger or the outdoor heat exchanger, the refrigerant distribution in a shutdown state can be kept in a distribution state during stable operation of refrigeration or heating, the high-low pressure difference for establishing system balance can be accelerated when the air conditioner is started next time, and the system stabilization time after the air conditioner is started can be shortened, so.

In addition, the air conditioner provided by the technical scheme of the invention also has the following additional technical characteristics:

In one embodiment, the first switching device includes a check valve, the check valve is in one-way communication in a direction from the exhaust port to the first port when the check valve is disposed on the first pipeline, and the check valve is in one-way communication in a direction from the third port to the suction port when the check valve is disposed on the second pipeline.

the check valve can only allow the refrigerant to flow in one direction, and cannot flow back in the other direction. The first switch device adopts the one-way valve, the control of the first pipeline or the second pipeline can be realized by utilizing the one-way conduction characteristic of the one-way valve, and the one-way valve is not required to be controlled by a controller, so that the control of the air conditioner is simpler.

when the check valve is arranged on the first pipeline, the refrigerant in the outdoor heat exchanger can be prevented from flowing back to the compressor when the refrigeration mode is shut down, and the refrigerant in the indoor heat exchanger can be prevented from flowing back to the compressor when the heating mode is shut down. When the check valve is arranged on the second pipeline, the refrigerant in the compressor can be prevented from flowing back to the indoor heat exchanger when the refrigeration mode is shut down, and the refrigerant in the compressor can be prevented from flowing back to the outdoor heat exchanger when the refrigeration mode is shut down.

In one embodiment, the throttling mechanism comprises a cut-off throttling mechanism which can be cut off.

The cut-off throttling mechanism has a cut-off function, so that the cut-off throttling mechanism can control the on-off of the third pipeline, and a switch device for controlling the third pipeline is not needed to be arranged at the moment, so that the structure of the air conditioner is further simplified, and the cost of the air conditioner is reduced.

In one embodiment, the stop throttle mechanism comprises an electronic expansion valve.

The electronic expansion valve can effectively improve the intelligent level of the air conditioner and improve the control precision of the air conditioner.

in one embodiment, the throttling mechanism includes a throttling mechanism body and a second switching device, which are connected in series, the third pipeline is divided into a first sub-pipeline and a second sub-pipeline by the throttling mechanism body, the second switching device is disposed on the first sub-pipeline, and the second switching device is electrically connected to the controller, so that the first sub-pipeline is turned on or off by receiving a control signal sent by the controller, or the second switching device is disposed on the second sub-pipeline, and the second switching device is electrically connected to the controller, so that the second sub-pipeline is turned on or off by receiving the control signal sent by the controller.

The throttle mechanism body can have a stop function, and at the moment, the throttle mechanism body can also be used for controlling the on-off of the third pipeline, for example, the throttle mechanism body is an electronic expansion valve; the throttle body may also have no shut-off function, for example, the throttle body is a capillary tube or a thermostatic expansion valve.

The on-off control of the third pipeline is realized through the combination of the throttling mechanism body and the second switch device, so that the refrigerant can be stored in the outdoor heat exchanger or the indoor heat exchanger when the air conditioner is shut down and the compressor stops running, and the refrigerating or heating speed is accelerated when the air conditioner is started next time.

In one embodiment, the second switch device comprises a second one-way electromagnetic cut-off valve or a second two-way electromagnetic cut-off valve.

The second switching device may be a solenoid valve, such as a one-way solenoid shut-off valve or a two-way solenoid shut-off valve. The on-off control of the third pipeline can be realized through the second one-way electromagnetic stop valve or the second bidirectional electromagnetic stop valve, for example, the on-off control of the first sub-pipeline is realized through the second switch device when the second switch device is positioned on the first sub-pipeline, and the on-off control of the second sub-pipeline is realized through the second switch device when the second switch device is positioned on the second sub-pipeline.

In one embodiment, the throttle body includes a capillary tube, a throttle valve, an electronic expansion valve or a thermal expansion valve.

the capillary tube and the thermostatic expansion valve have simple structures and low cost, and the electronic expansion valve can effectively improve the intelligent level of the air conditioner and improve the control precision of the air conditioner.

An aspect of a second aspect of the present invention provides a control method for controlling an air conditioner according to any one of the aspects of the first aspect, the control method including: responding to a shutdown instruction, controlling the throttle mechanism to close, so that the third pipeline is disconnected, and the first pipeline is conducted in a one-way mode along the direction from the exhaust port to the first port and/or the second pipeline is conducted in a one-way mode along the direction from the third port to the suction port, so that the migration or the migration of refrigerants in the indoor heat exchanger or the outdoor heat exchanger is prevented; the second end of the outdoor heat exchanger and the second end of the indoor heat exchanger are connected through the third pipeline, the first port is connected with the exhaust port through the first pipeline, and the third port is connected with the suction port through the second pipeline.

The control method provided by the technical scheme of the second aspect of the invention controls the shutdown of the air conditioner in response to the shutdown instruction, and comprises the steps of controlling the compressor to be closed, and controlling the throttle mechanism to be closed to disconnect the third pipeline, wherein the refrigerant is stored in the outdoor heat exchanger or the indoor heat exchanger to be longitudinal, the first pipeline is conducted in a single direction along the direction from the exhaust port to the first port, and the second pipeline is conducted in a single direction along the direction from the third port to the suction port, so that the migration of the refrigerant in the indoor heat exchanger or the outdoor heat exchanger is effectively prevented, or the refrigerant of the compressor migrates into the indoor heat exchanger or the outdoor heat exchanger, the refrigerant distribution in the shutdown state can be kept in the distribution state during the stable operation of refrigeration or heating, the high-low pressure difference of system balance can be accelerated during the next startup, the system stabilization time after the startup.

In one embodiment, the throttle mechanism includes a throttle mechanism body and a second switch device connected in series, and the controlling the throttle mechanism to close in response to the shutdown instruction includes: and controlling the second switching device to close, so that the throttling mechanism is closed, and the third pipeline is disconnected.

In one embodiment, the control method includes: and responding to a starting instruction, and controlling the throttle mechanism to be started so as to conduct the third pipeline.

And responding to the starting instruction, and starting the air conditioner to run, wherein the starting operation comprises the starting of a compressor. In order to ensure the normal circulation of the refrigerant, the throttle mechanism is controlled to be opened, so that the third pipeline is conducted, and the refrigerant flowing out of the exhaust port of the compressor realizes normal refrigeration circulation through the outdoor heat exchanger, the throttle mechanism and the indoor heat exchanger or realizes normal heating circulation through the indoor heat exchanger, the throttle mechanism and the outdoor heat exchanger. The throttling mechanism is controlled to be closed during shutdown, so that migration of refrigerants in the indoor heat exchanger or the outdoor heat exchanger is prevented, refrigerant distribution in the shutdown state is close to that in stable operation, and rapid refrigeration and heating can be realized during startup.

in one embodiment, the throttle mechanism includes a throttle mechanism body and a second switch device connected in series, and the controlling the throttle mechanism to open in response to the power-on command includes: and controlling the second switch device to be opened so as to control the throttle mechanism to be opened, so that the third pipeline is conducted.

an aspect of the third aspect of the present invention provides a control device, including a processor and a memory, where the processor is configured to implement the steps of the control method according to any one of the first aspect of the present invention when executing the computer program stored in the memory.

An aspect of the fourth aspect of the present invention provides an air conditioner including the control device according to the third aspect.

An aspect of the fifth aspect of the present invention provides a computer-readable storage medium having a computer program (instructions) stored thereon, characterized in that: the computer program (instructions), when executed by a processor, implement the steps of the control method according to any one of the claims of the second aspect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

the above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

Fig. 1 is a schematic structural diagram of an air conditioner according to a first embodiment of the present invention;

Fig. 2 is a schematic structural diagram of an air conditioner according to a second embodiment of the present invention;

Fig. 3 is a schematic structural diagram of an air conditioner according to a third embodiment of the present invention;

Fig. 4 is a schematic structural diagram of an air conditioner according to a fourth embodiment of the present invention;

FIG. 5 is a flow chart illustrating a control method according to an embodiment of the present invention;

Fig. 6 is a schematic flow chart of a control method according to a fifth embodiment of the present invention;

FIG. 7 is a flow chart illustrating a control method according to an embodiment of the present invention;

Fig. 8 is a flowchart illustrating a control method according to a sixth embodiment of the present invention;

FIG. 9 is a flow chart illustrating a control method according to an embodiment of the present invention;

fig. 10 is a schematic block diagram of a control device according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 10 is:

The system comprises a compressor 1, an exhaust port 11, a suction port 12, a reversing component 2, an outdoor heat exchanger 3, an outdoor fan 4, a throttling mechanism 5, a throttling mechanism body 51, a second switching device 52, a one-way valve 6, an indoor heat exchanger 7, an indoor fan 8, a first pipeline 9, a second pipeline 10, a third pipeline 20, a first sub-pipeline 201, a second sub-pipeline 202, a control device 200, a memory 204 and a processor 206.

Detailed Description

in order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

An air conditioner, a control method thereof, a control apparatus thereof, and a computer-readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 10 of the accompanying drawings.

As shown in fig. 1, an air conditioner according to some embodiments of the present invention includes a compressor 1, a reversing assembly 2, an outdoor heat exchanger 3, an indoor heat exchanger 7, an outdoor fan 4, an indoor fan 8, a throttle mechanism 5, a first switching device, and a controller.

The compressor 1 has a discharge port 11 and a suction port 12.

The direction changing unit 2 has first to fourth ports, the first port being connected to the exhaust port 11 through a first pipe 9, and the third port being connected to the suction port 12 through a second pipe 10.

The first end of the outdoor heat exchanger 3 is connected with the second port, the first end of the indoor heat exchanger 7 is connected with the fourth port, the second end of the outdoor heat exchanger 3 is connected with the second end of the indoor heat exchanger 7 through a third pipeline 20, and the throttling mechanism 5 is arranged on the third pipeline 20 and used for controlling the on-off of the third pipeline 20.

the controller is electrically connected with the throttle mechanism 5 and the compressor 1, respectively.

The first embodiment is as follows:

as shown in fig. 1, the first switching device is disposed on the second pipeline 10, and is used for controlling the on/off of the second pipeline 10, including controlling the conducting direction of the second pipeline 10 when the second pipeline 10 is connected (the second pipeline 10 is conducted in the direction from the third port to the exhaust port 11 or conducted in the direction from the exhaust port 11 to the third port).

During the refrigeration cycle, the refrigerant discharged from the exhaust port 11 of the compressor 1 flows to the first port of the reversing component 2 through the first pipeline 9, and flows to the outdoor heat exchanger 3, the throttling mechanism 5, the indoor heat exchanger 7 through the second port, the third port and the second pipeline 10 in sequence to flow back to the suction port 12 of the compressor 1.

During a heating cycle, a refrigerant discharged from an exhaust port 11 of the compressor 1 flows to a first port of the reversing assembly 2 through a first pipeline 9, sequentially flows to the indoor heat exchanger 7, the throttling mechanism 5, the outdoor heat exchanger 3 and flows back to an air suction port 12 of the compressor 1 through a second port, a third port and a second pipeline 10 through a fourth port.

the controller is used for: and responding to a shutdown instruction, controlling the throttle mechanism 5 to close so as to disconnect the third pipeline 20, so as to prevent the refrigerant in the indoor heat exchanger or the outdoor heat exchanger from migrating out or in.

In the air conditioner provided by the above embodiment of the present invention, in response to the shutdown instruction, the controller controls the throttle mechanism 5 to close, so that the third pipeline 20 is disconnected and the compressor 1 is closed.

When the air conditioner is turned off, the controller controls the throttle mechanism 5 to be closed, and the third pipeline 20 is disconnected, so that the distribution of the refrigerant can be kept in a distribution state during the stable operation of refrigeration or heating, the high-low pressure difference for establishing system balance can be accelerated when the air conditioner is turned on next time, and the refrigeration and heating speed of the air conditioner is improved.

Further, the first switching device includes a check valve 6, and the check valve 6 is one-way conductive in a direction from the third port to the suction port 12.

The check valve 6 allows the refrigerant to flow in only one direction, and does not flow back in the other direction. The first switch device adopts the one-way valve 6, the control of the first pipeline 9 or the second pipeline 10 can be realized by utilizing the one-way conduction characteristic of the one-way valve 6, and a controller is not needed to control the one-way valve 6, so that the control of the air conditioner is simpler.

It will be appreciated that the non-return valve 6 may also be another valve with a shut-off function, such as a solenoid valve.

Because the second pipeline 10 is in one-way conduction, when the air conditioner is shut down in a refrigeration mode, the second pipeline 10 can prevent the refrigerant in the compressor from flowing back to the indoor heat exchanger, the third pipeline 30 is disconnected and can prevent the refrigerant in the outdoor heat exchanger from migrating to the indoor heat exchanger through the third pipeline 30, so that the refrigerant in the indoor heat exchanger in the shutdown stage is close to the refrigerant distribution state when the air conditioner stably runs, when the air conditioner is shut down in a heating mode, the second pipeline 10 can prevent the refrigerant in the compressor from flowing back to the outdoor heat exchanger, the third pipeline 30 is disconnected and can prevent the refrigerant in the indoor heat exchanger from migrating to the outdoor heat exchanger through the third pipeline 30, and therefore the refrigerant in the outdoor heat exchanger in the shutdown stage is close to the refrigerant distribution state when the.

Further, the throttling mechanism 5 includes a throttling mechanism body 51 and a second switching device 52 connected in series, the third pipeline 20 is divided into a first sub-pipeline 201 and a second sub-pipeline 202 by the throttling mechanism body 51, the second switching device 52 is disposed on the first sub-pipeline 201, the second switching device 52 is electrically connected with the controller to make the first sub-pipeline 201 conductive or disconnected by receiving a control signal sent by the controller, or the second switching device 52 is disposed on the second sub-pipeline 202, the second switching device 52 is electrically connected with the controller to make the second sub-pipeline 202 conductive or disconnected by receiving a control signal sent by the controller.

The throttle mechanism body 51 may have a cut-off function, and at this time, the throttle mechanism body 51 may also be used to control the on/off of the third pipeline 20, for example, the throttle mechanism body 51 is an electronic expansion valve; the throttle body 51 may not have a shut-off function, for example, the throttle body 51 may be a capillary tube or a thermal expansion valve.

The on-off control of the third pipeline 20 is realized through the combination of the throttle mechanism body 51 and the second switch device 52, so that the refrigerant can be stored in the indoor heat exchanger 7 or the outdoor heat exchanger 3 when the air conditioner shutdown compressor 1 continues to operate, and the cooling or heating speed is increased when the air conditioner is started next time.

Further, the second switching device 52 includes a second one-way electromagnetic cut-off valve or a second two-way electromagnetic cut-off valve.

The second switching device 52 may be a solenoid valve, such as a one-way solenoid shut-off valve or a two-way solenoid shut-off valve. The on-off of the third pipeline 20 can be controlled by the second one-way electromagnetic cut-off valve or the second two-way electromagnetic cut-off valve, for example, if the second switch device 52 is located on the first sub-pipeline 201, the on-off of the first sub-pipeline 201 is controlled by the second switch device 52, and if the second switch device 52 is located on the second sub-pipeline 202, the on-off of the second sub-pipeline 202 is controlled by the second switch device 52.

Further, the throttle mechanism body 51 includes a capillary tube, a throttle valve, an electronic expansion valve, or a thermal expansion valve.

Example two:

As shown in fig. 2, the difference from the first embodiment is that a first switch device is provided on the first pipeline 9 for controlling the on/off of the first pipeline 9.

When the air conditioner is shut down in the refrigeration mode, the throttling mechanism 5 is controlled to be closed in response to a shutdown instruction, the compressor 1 is controlled to stop running, the first pipeline 9 is in one-way conduction along the direction from the exhaust port 11 to the first port, and the refrigerant in the outdoor heat exchanger can be effectively prevented from migrating to the indoor heat exchanger through the third pipeline or migrating back to the compressor through the first pipeline, so that the first switching device is arranged on the first pipeline 9, and the refrigerant in the outdoor heat exchanger can be enabled to be closer to the refrigerant distribution when the air conditioner stably runs.

When the air conditioner is shut down in the heating mode, the throttling mechanism 5 is controlled to be closed in response to a shutdown instruction, the compressor 1 is controlled to stop running, the first pipeline 9 is in one-way conduction along the direction from the exhaust port 11 to the first port, and the refrigerant in the indoor heat exchanger can be effectively prevented from migrating to the outdoor heat exchanger through the third pipeline or migrating back to the compressor through the first pipeline, so that the first switching device is arranged on the first pipeline 9, and the refrigerant in the indoor heat exchanger can be enabled to be closer to the refrigerant distribution when the air conditioner stably runs.

example three:

As shown in fig. 3, the difference from the first embodiment is that the throttle means 5 includes a cut-off throttle means 5 which can be cut off.

The cut-off throttling mechanism 5 has a cut-off function, so the cut-off throttling mechanism 5 can control the on-off of the third pipeline 20, and a switch device for controlling the third pipeline 20 is not needed to be arranged at the moment, so the structure of the air conditioner is further simplified, and the cost of the air conditioner is reduced.

further, the stop throttle mechanism 5 includes an electronic expansion valve.

Example four:

as shown in fig. 4, the difference from the second embodiment is that the throttle means 5 includes a cut-off throttle means 5 which can be cut off.

Further, the stop throttle mechanism 5 includes an electronic expansion valve.

It will be appreciated that it is also possible to provide first switching means on both the first and second lines.

As shown in fig. 5, an embodiment of a second aspect of the present invention provides a control method for controlling an air conditioner according to any one of the first aspect, the control method including:

step S50, in response to the shutdown instruction, the throttling mechanism 5 is controlled to close, so that the third pipeline 20 is disconnected, the first pipeline 9 is conducted in a single direction along the direction from the exhaust port 11 to the first port, and/or the second pipeline 10 is conducted in a single direction along the direction from the third port to the suction port 12, so as to prevent the refrigerant in the indoor heat exchanger 7 or the outdoor heat exchanger 3 from migrating or migrating.

The technical solution of the second aspect of the present invention provides a control method for controlling an air conditioner to shut down in response to a shutdown instruction, including controlling a compressor 1 to shut down, and the throttle mechanism 5 is controlled to be closed, so that the third pipeline 20 is disconnected, the refrigerant is stored in the outdoor heat exchanger 3 or the indoor heat exchanger 7, the first pipeline 9 is communicated in a single direction along the direction from the exhaust port 11 to the first port, the second pipeline 10 is communicated in a single direction along the direction from the third port to the suction port 12, the migration of the refrigerant in the indoor heat exchanger 7 or the outdoor heat exchanger 3 is effectively prevented, or the refrigerant of the compressor 1 is transferred into the indoor heat exchanger 7 or the outdoor heat exchanger 3, so that the refrigerant distribution in the shutdown state is kept in the distribution state during the stable operation of refrigeration or heating, the high-low pressure difference for establishing the system balance can be accelerated in the next startup, the system stabilization time after startup is shortened, and the rapid refrigeration and heating are realized.

The shutdown instruction can be from a remote controller of the air conditioner, that is, a user sends the shutdown instruction to the air conditioner through the remote controller. The air conditioner can also automatically shut down in an automatic control mode according to the change of the indoor or outdoor temperature to generate a shutdown instruction, for example, when the indoor ambient temperature is lower than the preset temperature in the refrigeration mode, the air conditioner automatically shuts down, for example, when the indoor ambient temperature is detected to be lower than the preset temperature, the shutdown instruction is generated.

The starting instruction can be from a remote controller of the air conditioner, namely, a user sends the starting instruction to the air conditioner through the remote controller. The air conditioner can also be automatically controlled to automatically start according to the change of the indoor or outdoor temperature to generate a starting instruction, for example, when the indoor environment temperature is higher than the preset temperature in the refrigeration mode, the air conditioner automatically starts, for example, when the indoor environment temperature is higher than the preset temperature, the starting instruction is generated.

Example five:

As shown in fig. 6, a control method for controlling the air conditioners in the first and third embodiments.

The control method comprises the following steps:

In step S602, in response to the power-on command, the throttle mechanism 5 is controlled to open, so as to conduct the third pipeline 20.

In response to the power-on command, the air conditioner is powered on, including the compressor 1 being turned on. In order to ensure the normal circulation of the refrigerant, the throttle mechanism 5 is controlled to be opened, so that the third pipeline 20 is conducted, and the refrigerant flowing out of the exhaust port 11 of the compressor 1 realizes the normal refrigeration circulation through the outdoor heat exchanger 3, the throttle mechanism 5 and the indoor heat exchanger 7, or realizes the normal heating circulation through the indoor heat exchanger 7, the throttle mechanism 5 and the outdoor heat exchanger 3.

as shown in fig. 1, in the case where the throttle mechanism 5 includes the throttle mechanism body 51 and the second switching device 52 connected in series, the step S602 of controlling the throttle mechanism 5 to open in response to the start-up command includes: the second switching device 52 is controlled to be opened to control the throttle 5 to be opened, so that the third pipeline 20 is conducted.

Step S604 is included after step S602, and it is determined whether the air conditioner has received a shutdown instruction.

If it is determined that the air conditioner receives the shutdown instruction, step S606 is executed, and if it is determined that the air conditioner does not receive the shutdown instruction, step S602 is executed.

It should be noted that step S602 may be before or after step S606.

Step S606, in response to the shutdown instruction, controlling the throttle mechanism 5 to close, so as to disconnect the third pipeline 20, conduct the first pipeline 9, and conduct the second pipeline 10 in a single direction along the direction from the third port to the suction port 12, so as to prevent the refrigerant in the indoor heat exchanger 7 or the outdoor heat exchanger 3 from migrating out or in.

in response to a shutdown instruction in a refrigeration mode, the compressor 1 and the throttling mechanism 5 are closed, because the third pipeline 20 is disconnected, the refrigerant in the outdoor heat exchanger 3 cannot migrate into the indoor heat exchanger 7 through the third pipeline 20, the refrigerant in the indoor heat exchanger 7 cannot migrate into the outdoor heat exchanger 3 through the third pipeline 20, and because the second pipeline 10 is in one-way conduction, the refrigerant in the compressor 1 cannot migrate into the indoor heat exchanger 7 through the second pipeline 10, so that the refrigerant migration amount in the indoor heat exchanger 7 and the refrigerant migration amount in the outdoor heat exchanger 3 are relatively small in a shutdown stage, the refrigerants in the indoor heat exchanger 7 and the outdoor heat exchanger 3 are closer to the refrigerant distribution in a stable operation state of the air conditioner during and after shutdown, and rapid refrigeration and heating can be realized during startup.

In response to a shutdown instruction in a heating mode, the compressor 1 and the throttling mechanism 5 are closed, because the third pipeline 20 is disconnected, the refrigerant in the outdoor heat exchanger 3 cannot migrate into the indoor heat exchanger 7 through the third pipeline 20, the refrigerant in the indoor heat exchanger 7 cannot migrate into the outdoor heat exchanger 3 through the third pipeline 20, and because the second pipeline 10 is in one-way conduction, the refrigerant in the compressor 1 cannot migrate into the outdoor heat exchanger 3 through the second pipeline 10, so that the refrigerant migration amounts in the indoor heat exchanger 7 and the outdoor heat exchanger 3 are relatively small in a shutdown stage, the refrigerants in the indoor heat exchanger 7 and the outdoor heat exchanger 3 are closer to the refrigerant distribution of the air conditioner in a stable operation state in the shutdown process and after the shutdown process, and rapid cooling and heating can be realized during startup.

as shown in fig. 1, in the case where the throttle mechanism 5 includes the throttle mechanism body 51 and the second switching device 52 connected in series, the step S606 of controlling the throttle mechanism 5 to close in response to the shutdown instruction includes: the second switching device 52 is controlled to close so that the throttling mechanism 5 is closed to disconnect the third line 20.

As shown in fig. 7, in a specific embodiment, the control method of the air conditioner includes steps S702 to S708, in which the solenoid valve is the second switching device 52.

Example six:

a control method for controlling the air conditioners in the second and fourth embodiments.

as shown in fig. 8, the control method includes:

In step S802, in response to the power-on command, the throttle mechanism 5 is controlled to open, so as to conduct the third pipeline 20.

As shown in fig. 2, for the case that the throttle mechanism 5 includes the throttle mechanism body 51 and the second switch device 52 connected in series, the step S802 of controlling the throttle mechanism 5 to open in response to the start-up command includes: the second switching device 52 is controlled to be opened to control the throttle 5 to be opened, so that the third pipeline 20 is conducted.

Step S804 is included after step S802, and it is determined whether the air conditioner has received a shutdown command.

If it is determined that the air conditioner receives the shutdown command, step S806 is executed, and if it is determined that the air conditioner does not receive the shutdown command, step S802 is executed.

It should be noted that step S802 may be before or after step S806.

Step S806, in response to the shutdown instruction, controls the throttle mechanism 5 to close, so as to disconnect the third pipeline 20, connect the first pipeline 9, and connect the second pipeline 10 in a single direction along the direction from the third port to the suction port 12, so as to prevent the refrigerant in the indoor heat exchanger 7 or the outdoor heat exchanger 3 from migrating out or in.

As shown in fig. 2, for the case where the throttle mechanism 5 includes the throttle mechanism body 51 and the second switching device 52 connected in series, the step S806 of controlling the throttle mechanism 5 to close in response to the shutdown instruction includes: the second switching device 52 is controlled to close so that the throttling mechanism 5 is closed to disconnect the third line 20.

As shown in fig. 9, in a specific embodiment, the control method of the air conditioner includes steps S902 to S908 in which the solenoid valve is the second switching device 52.

it can be understood that when the check valves are arranged on the first pipeline and the second pipeline, the first pipeline and the second pipeline are in a one-way conduction state, and rapid refrigeration and heating during starting can be realized.

In summary, a throttling mechanism capable of controlling the third pipeline to be connected or disconnected is arranged in the system, so that the refrigerant migration in the shutdown process can be effectively prevented, the refrigerant distribution in the shutdown state is closer to the refrigerant distribution in the stable operation, the system stabilization time after the startup is reduced, and the rapid refrigeration and heating are realized, and the specific scheme is as follows:

the throttling mechanism is closed when the compressor is turned off, the one-way valve on the compressor side keeps one-way circulation, so that the refrigerant distribution in the shutdown state keeps the distribution state in the stable operation of refrigeration or heating, and the throttling structure is opened when the compressor is turned on next time, thereby accelerating the establishment of the high-low pressure difference of the system balance.

as shown in fig. 10, a third aspect of the present invention provides a control device 200, which includes a processor 206 and a memory 204, wherein the processor 206 is configured to implement the steps of the control method according to any one of the first aspect of the present invention when executing the computer program stored in the memory 204.

An aspect of the fourth aspect of the present invention provides an air conditioner including the control device 200 according to the third aspect.

An embodiment of a fifth aspect of the present invention provides a computer-readable storage medium having a computer program (instructions) stored thereon, characterized in that: the computer program (instructions), when executed by the processor 206, implement the steps of the control method as in any one of the embodiments of the second aspect.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage mediums comprising computer-usable program code(s) (including, but not limited to, disk storage 204, CD-ROM, optical storage 204, etc.).

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor 206 of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor 206 of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory 204 that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory 204 produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

these computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

In the description of the present invention, the term "plurality" means two or more unless explicitly specified or limited otherwise; the terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, or an electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined in the appended claims and their equivalents, and it is intended that the invention encompass such changes and modifications as well.

Claims

1. An air conditioner, comprising:

A compressor having an exhaust port and an intake port;

The reversing component is provided with first to fourth ports, the first port is connected with the exhaust port through a first pipeline, and the third port is connected with the air suction port through a second pipeline;

the first end of the outdoor heat exchanger is connected with the second port, and the first end of the indoor heat exchanger is connected with the fourth port;

The second end of the outdoor heat exchanger is connected with the second end of the indoor heat exchanger through a third pipeline, and the throttling mechanism is arranged on the third pipeline and used for controlling the on-off of the third pipeline;

The first switching device is arranged on at least one of the first pipeline and the second pipeline and used for controlling the on-off of the pipeline where the first switching device is arranged, or the first switching device is arranged on the second pipeline and used for controlling the on-off of the second pipeline;

a controller electrically connected to the throttle mechanism, the controller configured to: and responding to a shutdown instruction, closing the throttling mechanism to disconnect the third pipeline so as to prevent the refrigerant in the indoor heat exchanger or the outdoor heat exchanger from migrating out or in.

2. The air conditioner according to claim 1,

The first switching device includes a check valve that is in one-way communication in a direction from the exhaust port to the first port in a case where the check valve is provided on the first pipeline, and is in one-way communication in a direction from the third port to the suction port in a case where the check valve is provided on the second pipeline.

3. The air conditioner according to claim 1 or 2,

The throttling mechanism comprises a cut-off throttling mechanism which can be cut off.

4. The air conditioner according to claim 3,

the stop throttling mechanism comprises an electronic expansion valve.

5. The air conditioner according to claim 1 or 2,

the throttling mechanism comprises a throttling mechanism body and a second switching device which are connected in series, the third pipeline is divided into a first sub-pipeline and a second sub-pipeline by the throttling mechanism body, the second switching device is arranged on the first sub-pipeline, the second switching device is electrically connected with the controller so as to enable the first sub-pipeline to be connected or disconnected by receiving a control signal sent by the controller, or the second switching device is arranged on the second sub-pipeline, and the second switching device is electrically connected with the controller so as to enable the second sub-pipeline to be connected or disconnected by receiving the control signal sent by the controller.

6. The air conditioner according to claim 5,

The second switch device comprises a second one-way electromagnetic stop valve or a second two-way electromagnetic stop valve.

7. the air conditioner according to claim 5,

The throttle mechanism body comprises a capillary tube, a throttle valve, an electronic expansion valve or a thermal expansion valve.

8. A control method for controlling the air conditioner according to any one of claims 1 to 7, characterized by comprising:

Responding to a shutdown instruction, controlling the throttle mechanism to close, so that the third pipeline is disconnected, and the first pipeline is conducted in a one-way mode along the direction from the exhaust port to the first port and/or the second pipeline is conducted in a one-way mode along the direction from the third port to the suction port, so that the migration or the migration of refrigerants in the indoor heat exchanger or the outdoor heat exchanger is prevented;

The second end of the outdoor heat exchanger and the second end of the indoor heat exchanger are connected through the third pipeline, the first port is connected with the exhaust port through the first pipeline, and the third port is connected with the suction port through the second pipeline.

9. The control method according to claim 8,

The throttle mechanism includes throttle mechanism body and the second switching device who establishes ties mutually, respond to the shutdown instruction, control throttle mechanism and close, include: and controlling the second switch device to be closed.

10. the control method according to claim 8 or 9, characterized by comprising:

And responding to a starting instruction, and controlling the throttle mechanism to be started so as to conduct the third pipeline.

11. The control method according to claim 10,

The throttle mechanism includes throttle mechanism body and the second switching device who establishes ties mutually, respond to start-up instruction, control throttle mechanism opens, include: and controlling the second switch device to be started.

12. A control apparatus, comprising a processor and a memory, the processor being configured to implement the steps of the control method according to any one of claims 8 to 11 when executing a computer program stored in the memory.

13. An air conditioner characterized by comprising the control device according to claim 12.

14. A computer-readable storage medium having stored thereon a computer program (instructions), characterized in that: the computer program (instructions), when executed by a processor, implement the steps of the control method of any one of claims 8 to 11.