CN110542233A

CN110542233A - Air conditioner, control method and device thereof, and computer-readable storage medium

Info

Publication number: CN110542233A
Application number: CN201910867094.5A
Authority: CN
Inventors: 朱兴丹; 徐振坤; 白崇俨; 杜顺开; 喻广南
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
Anticipated expiration: 2039-09-12
Also published as: CN110542233B

Abstract

The invention provides an air conditioner, a control method, a control device and a computer readable storage medium thereof, wherein a liquid storage device is connected between a second end of an indoor heat exchanger and a second end of an outdoor heat exchanger in series; one of the throttling mechanism and the first switch device is arranged on a first pipeline between the liquid reservoir and the second end of the outdoor heat exchanger, the other of the throttling mechanism and the first switch device is arranged on a second pipeline between the liquid reservoir and the second end of the indoor heat exchanger, and the throttling mechanism and the first switch device are respectively used for controlling the on-off of the pipeline where the throttling mechanism and the first switch device are arranged; and responding to a shutdown instruction, controlling the other one of the throttling mechanism and the first switching device to be closed, maintaining the compressor to continue to operate, and maintaining one of the throttling mechanism and the first switching device to be opened so as to disconnect the second pipeline and connect the first pipeline. The air conditioner responds to the shutdown instruction, and the refrigerant is stored in the liquid storage device, so that the refrigerating speed of the next startup is accelerated.

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 refrigeration stable operation state, the refrigerant quantity of the outdoor side is relatively large, and the refrigerant quantity of the indoor side is relatively small. Before the air conditioner is started, the outdoor side temperature is high, the refrigerant can migrate to the indoor side with relatively low temperature, the amount of the refrigerant on the indoor side is relatively large, and therefore, the system balance needs to be reestablished for a long time, and the reduction speed of the outlet air temperature of the air conditioner after the air conditioner is started is low. At present, various manufacturers mainly adopt a high-frequency starting or rapid frequency increasing mode of a compressor to increase the refrigeration speed of an air conditioner.

When the compressor is started at a high frequency or is rapidly increased in frequency, the refrigerant on the indoor side is rapidly sucked completely in a short time, the refrigerant on the outdoor 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 indoor heat exchanger, and the refrigerating 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, and the third port is connected with the suction port; 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; an accumulator connected in series between the second end of the indoor heat exchanger and the second end of the outdoor heat exchanger; one of the throttling mechanism and the first switch device is arranged on a first pipeline between the liquid storage device and the second end of the outdoor heat exchanger, the other of the throttling mechanism and the first switch device is arranged on a second pipeline between the liquid storage device and the second end of the indoor heat exchanger, and the throttling mechanism and the first switch device are respectively used for controlling the on-off of the pipeline where the throttling mechanism and the first switch device are arranged; wherein, in response to a shutdown command, maintaining the one of the throttling mechanism and the first switching device open, the other of the throttling mechanism and the first switching device closed, and maintaining the compressor to continue operating, so as to disconnect the second pipeline and connect the first pipeline.

In the air conditioner provided by the technical scheme of the invention, the throttling mechanism is arranged on the first pipeline, the first switching device is arranged on the second pipeline, the compressor, the outdoor heat exchanger, the throttling mechanism, the liquid storage device, the first switching device and the indoor heat exchanger are sequentially connected to form a refrigerant circulation loop, the first switching device is controlled to be closed in response to a shutdown instruction so as to disconnect the second pipeline, the throttling mechanism is kept continuously opened so as to conduct the first pipeline, and the compressor is kept continuously running, so that the refrigerant discharged from the exhaust port of the compressor flows into the liquid storage device through the reversing component, the outdoor heat exchanger and the throttling mechanism and is gradually stored in the liquid storage device. When the air conditioner is started to operate next time, the refrigerant accumulated in the liquid reservoir can quickly flow into the indoor heat exchanger, so that the speed of the refrigerant flowing into the indoor heat exchanger is increased, the amount of the refrigerant entering the indoor heat exchanger is increased, the speed of the refrigerant reaching the indoor heat exchanger can be shortened, and the starting and refrigerating speed is accelerated.

Or the first switching device is arranged on the first pipeline, the throttling mechanism is arranged on the second pipeline, and the compressor, the outdoor heat exchanger, the first switching device, the liquid storage device, the throttling mechanism and the indoor heat exchanger are sequentially connected to form a refrigerant circulation loop. And in response to a shutdown instruction, the throttling mechanism is controlled to be closed so as to disconnect the second pipeline, the first switching device is kept to be continuously opened so as to conduct the first pipeline, and the compressor is kept to continuously operate, so that the refrigerant discharged from the air outlet of the compressor flows into the liquid accumulator through the reversing assembly, the outdoor heat exchanger and the first switching device and is gradually accumulated in the liquid accumulator. When the air conditioner is started next time and operates in the refrigerating mode, the refrigerant accumulated in the liquid reservoir can quickly flow into the indoor heat exchanger, so that the speed of the refrigerant reaching the indoor heat exchanger can be shortened, and the starting and refrigerating speed is accelerated.

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

in one embodiment, the throttling mechanism comprises a throttling mechanism body and a second switching device which are connected in series, and the second switching device is used for controlling the on-off of a pipeline where the second switching device is located.

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 a pipeline where the throttle mechanism body is located, 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 combination of the throttling mechanism body and the second switch device realizes the control of the on-off of the pipeline where the throttling mechanism is located, so that a refrigerant can be stored in the liquid storage device when the air conditioner is turned off and the compressor continues to operate, the speed of cold air outlet of the air conditioner is increased when the air conditioner is turned on next time, and the refrigerating speed is increased.

In one embodiment, the second switching device is disposed on the first pipeline, and the second switching device comprises a first one-way electromagnetic cut-off valve, a first two-way electromagnetic cut-off valve, or a first one-way mechanical valve, wherein the first one-way mechanical valve is configured to conduct in a direction from the second end of the outdoor heat exchanger to the second end of the indoor heat exchanger; or, the second switching device is arranged on the second pipeline and comprises a first one-way electromagnetic stop valve or a first two-way electromagnetic stop valve, wherein the first one-way electromagnetic stop valve is configured to selectively open or close the second pipeline in the cooling mode.

for the case where the throttle mechanism is provided on the first pipeline, that is, the second switching device is provided on the first pipeline, the second switching device includes the first one-way electromagnetic cut-off valve, the first bidirectional electromagnetic cut-off valve, or the first one-way mechanical valve, wherein when the first one-way electromagnetic cut-off valve is employed, the control is simpler.

For the case where the throttle mechanism is provided on the second pipeline, that is, the second switching device is provided on the second pipeline, the second switching device includes the first one-way electromagnetic cut-off valve or the first two-way electromagnetic cut-off valve, wherein when the first one-way electromagnetic cut-off valve is employed, the control is simpler.

In one embodiment, the throttle body includes a capillary tube, 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.

In one embodiment, the throttling mechanism is 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 pipeline where the cut-off throttling mechanism is located, and a switch device for controlling the on-off of the pipeline where the throttling mechanism is located is not needed to be arranged, 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 first switching device is disposed on the first pipeline, and the first switching device comprises a second one-way electromagnetic cut-off valve, a second bidirectional electromagnetic cut-off valve or a second one-way mechanical valve, wherein the second one-way mechanical valve is configured to conduct in a direction from the second end of the outdoor heat exchanger to the second end of the indoor heat exchanger, and the second one-way electromagnetic cut-off valve and the second one-way mechanical valve can further simplify the structure of the air conditioner; the first switch device is arranged on the second pipeline and comprises a second one-way electromagnetic stop valve or a second bidirectional electromagnetic stop valve, wherein the second one-way electromagnetic stop valve is configured to selectively open or close the second pipeline in a refrigeration mode, so that the on-off control of the second pipeline is realized by controlling the opening or closing of the second one-way electromagnetic stop valve, and the structure of the air conditioner can be further simplified by adopting the second one-way electromagnetic stop valve.

The first switch device and the second switch device can be respectively a second bidirectional electromagnetic stop valve and a first bidirectional electromagnetic stop valve, can also be respectively a second bidirectional electromagnetic stop valve and a first one-way electromagnetic stop valve, can also be respectively a second one-way electromagnetic stop valve and a first bidirectional electromagnetic stop valve, and can also be respectively a second one-way electromagnetic stop valve and a first one-way electromagnetic stop valve. When the first switching device is arranged on the first pipeline and the second switching device is arranged on the second pipeline, the first switching device and the second switching device can also be a second one-way mechanical valve and a first one-way electromagnetic stop valve respectively, and further, the first one-way electromagnetic stop valve and the second one-way mechanical valve are arranged in a reverse direction at the moment, or the first switching device and the second switching device are a second one-way mechanical valve and a first two-way electromagnetic stop valve respectively. When the second switch device is arranged on the first pipeline and the first switch device is arranged on the second pipeline, the first switch device and the second switch device can also be a second one-way electromagnetic stop valve and a first one-way mechanical valve respectively, further, the second one-way electromagnetic stop valve and the first one-way mechanical valve are arranged in a reverse direction at the moment, or the first switch device and the second switch device are a second two-way electromagnetic stop valve and a first one-way mechanical valve respectively.

In one embodiment, an air conditioner includes: a water reservoir comprising a housing, the reservoir being located within the housing, the housing being adapted to receive condensate water produced by the indoor heat exchanger.

Condensed water generated in the operation process of the air conditioner enters the shell to be stored, and the temperature of the condensed water is low, so that the condensed water can exchange heat with a refrigerant in the liquid storage device, the temperature of the refrigerant in the liquid storage device is reduced, and the starting refrigeration speed is further accelerated when the air conditioner is started and operated next time.

In one embodiment, the housing comprises a thermal insulation material.

the casing includes insulation material to can realize the heat preservation to the comdenstion water, further strengthen the cooling capacity of comdenstion water to the refrigerant in the reservoir, insulation material can also realize the heat preservation to the reservoir, prevents that the refrigerant temperature in the reservoir from rising.

The thermal insulation material can be organic thermal insulation material (such as foam plastic), inorganic thermal insulation material (such as glass wool) or metal type thermal insulation material.

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: and responding to a shutdown command, maintaining one of a throttling mechanism and a first switching device to be opened, controlling the other of the throttling mechanism and the first switching device to be closed, and maintaining the compressor to continue to operate so as to enable a first pipeline to be conducted and a second pipeline to be disconnected, wherein the first pipeline is arranged between a liquid storage device and a second end of an outdoor heat exchanger, the one of the throttling mechanism and the first switching device is arranged on the first pipeline, the second pipeline is arranged between the liquid storage device and a second end of an indoor heat exchanger, and the other of the throttling mechanism and the first switching device is arranged on the second pipeline.

in the control method provided by the technical scheme of the second aspect of the invention, when the air conditioner is shut down in response to a shutdown instruction under the condition that the throttling mechanism is arranged on the first pipeline, the first switching device is controlled to be closed so as to disconnect the second pipeline, the throttling mechanism is kept to be continuously opened so as to conduct the first pipeline and keep the compressor to continuously operate, and thus, the refrigerant discharged from the air outlet of the compressor flows into the liquid accumulator through the reversing component, the outdoor heat exchanger and the throttling mechanism and is gradually accumulated in the liquid accumulator. When the air conditioner is started next time and operates in the refrigerating mode, the refrigerant accumulated in the liquid reservoir can quickly flow into the indoor heat exchanger, so that the speed of the refrigerant reaching the indoor heat exchanger can be shortened, and the starting and refrigerating speed is accelerated.

When the air conditioner is shut down in response to a shutdown instruction under the condition that the first switching device is arranged on the first pipeline and the throttling mechanism is arranged on the second pipeline, the throttling mechanism is controlled to be closed so as to disconnect the second pipeline, the first switching device is kept on to conduct the first pipeline and keep the compressor running continuously, and therefore the refrigerant discharged from the air outlet of the compressor flows into the liquid storage device through the reversing assembly, the outdoor heat exchanger and the first switching device and is gradually stored in the liquid storage device. When the air conditioner is started next time and operates in the refrigerating mode, the refrigerant accumulated in the liquid reservoir can quickly flow into the indoor heat exchanger, so that the speed of the refrigerant reaching the indoor heat exchanger can be shortened, and the starting and refrigerating speed is accelerated.

In one embodiment, after maintaining one of the throttle mechanism and the first switch device open, controlling the other of the throttle mechanism and the first switch device closed, and maintaining the compressor to continue to operate in response to the shutdown command, the control method includes: detecting working condition parameters of the air conditioner; and the working condition parameters of the air conditioner meet a first preset condition, the compressor is controlled to stop running, and the first switching device and the throttling mechanism are controlled to be closed so as to disconnect the first pipeline.

The working condition parameter of the air conditioner is detected, whether the working condition parameter meets a first preset condition or not is judged, when the working condition parameter meets the first preset condition, a first switching device or a throttling mechanism arranged on a first pipeline is controlled to be closed, so that the first pipeline is disconnected, the compressor is controlled to stop running, a refrigerant is stored in a liquid storage device, and the refrigerant is prevented from flowing to an outdoor heat exchanger from the liquid storage device. The refrigerant stored in the liquid storage device can accelerate the refrigerating speed of the air conditioner when the air conditioner is started next time.

In one embodiment, the meeting of the working condition parameter of the air conditioner with the first preset condition specifically includes: any one of the continuous operation time of the compressor is longer than a first preset time, the suction pressure of the compressor is lower than a first preset pressure, and the suction temperature of the compressor is lower than a first preset temperature.

The operating condition parameters include the length of time the compressor continues to operate, the suction pressure of the compressor, which refers to the pressure at the suction port of the compressor, or the suction temperature of the compressor, which refers to the temperature at the suction port of the compressor. When the working condition parameters meet the first preset condition, the compressor is controlled to stop running in time, so that a proper amount of refrigerant is stored in the liquid storage device, and the problem that the energy consumption of the air conditioner is high due to long-term running of the compressor can be avoided.

In one embodiment, the range of the first preset duration is 10s to 120s, which not only can ensure that a proper amount of refrigerant is stored in the liquid accumulator, but also can avoid the high energy consumption of the air conditioner caused by the long-term operation of the compressor, the range of the first preset pressure is 0MPa to 0.6MPa (absolute pressure), so that a proper amount of refrigerant is stored in the liquid accumulator, the range of the first preset temperature is-30 ℃ to 0 ℃, the high energy consumption of the air conditioner caused by the long-term operation of the compressor and the damage of the compressor caused by the long-term idling of the compressor are prevented, and the proper amount of refrigerant is stored in the liquid accumulator.

In one embodiment, the control method includes: and responding to a starting instruction of a refrigeration mode, and controlling the first switching device and the throttling mechanism to be opened so as to conduct the first pipeline and conduct the second pipeline.

And responding to the starting instruction of the refrigeration mode, starting the air conditioner to operate, and operating in the refrigeration mode. In order to ensure the normal circulation of the refrigerant, the first switching device and the throttling mechanism are controlled to be opened, so that the first pipeline is conducted, the second pipeline is conducted, and the refrigerant flowing out of the exhaust port of the compressor passes through the outdoor heat exchanger and the indoor heat exchanger to realize the refrigeration cycle.

In one embodiment, the throttle mechanism comprises a throttle mechanism body and a second switch device; respond to the start-up instruction of refrigeration mode, control first switching device and throttle mechanism and open, specifically include: controlling the second switch device to be started; if the shutdown instruction is responded, controlling the throttle mechanism to be closed, specifically comprising the following steps: controlling the second switching device to be closed; if the shutdown instruction is responded, the step of maintaining the throttle mechanism to be started specifically comprises the following steps: maintaining the second switch device open.

for the condition that the throttling mechanism comprises a throttling mechanism body and a second switching device, when the engine is started to operate, the first pipeline or the second pipeline where the throttling mechanism is located needs to be ensured to be conducted, so that the throttling mechanism needs to be controlled to be started, and the control of the starting of the throttling mechanism comprises the control of the starting of the second switching device. Controlling the throttle mechanism to close in response to the shutdown command includes controlling the second switching device to close. And if the shutdown instruction is responded, the first switch device is controlled to be closed, and when the working condition parameters of the air conditioner meet a first preset condition, the throttle mechanism is controlled to be closed specifically, the second switch device is controlled to be closed.

In one embodiment, the control method includes: and the working condition parameters of the air conditioner meet a second preset condition, and the condensed water in the water storage device is discharged.

The condensed water in the water receiver is discharged or replaced regularly, so that the temperature and the water quantity of the condensed water in the water receiver are kept in a proper range, and the condensed water in the water receiver is ensured to have a good cooling and heat-preserving effect on a refrigerant in the water receiver all the time.

In one embodiment, the second preset condition includes: any one of a time period exceeding a second preset time period since the last discharge, an amount of condensed water in the water reservoir reaching a preset amount, and a temperature of the condensed water in the water reservoir exceeding a second preset temperature.

When any one of the conditions that the last discharge time exceeds a second preset duration, the condensed water amount in the water receiver reaches a preset water amount, and the temperature of the condensed water in the water receiver exceeds a second preset temperature is met, the condensed water in the water receiver is discharged, on one hand, the temperature of the condensed water is guaranteed not to be too high, and the cooling effect on a refrigerant is lost, on the other hand, the condensed water amount in the water receiver is prevented from being too large, and the condensed water is caused to overflow from the water receiver.

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 third embodiment of the present invention;

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

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

Fig. 5 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;

Fig. 6 is a flowchart illustrating a control method of an air conditioner according to a sixth embodiment of the present invention;

fig. 7 is a flowchart illustrating a control method of an air conditioner according to a sixth embodiment of the present invention;

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

Fig. 9 is a flowchart illustrating a control method of an air conditioner according to a sixth embodiment of the present invention;

fig. 10 is a flowchart illustrating a control method of an air conditioner according to a sixth embodiment of the present invention;

Fig. 11 is a flowchart illustrating a control method of an air conditioner according to a sixth embodiment of the present invention;

Fig. 12 is a schematic block diagram of a control apparatus of an air conditioner according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 12 is:

The air conditioner comprises a compressor, an air outlet 11, an air inlet 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 liquid storage device 6, a water storage device 7, a shell 71, a first switching device 8, a condensed water pipe 9, an indoor heat exchanger 10, an indoor fan 20, a first pipeline 30, a second pipeline 40, a control device 200, a processor 202 and a storage device 204.

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 12 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 fan 4, an outdoor heat exchanger 3, an indoor fan 20, an indoor heat exchanger 10, a reservoir 6, a throttle mechanism 5, and a first switching device 8.

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

The reversing assembly 2 has first to fourth ports, the first port being connected to the exhaust port 11, the third port being connected to the suction port 12, the second port being connected to the first end of the outdoor heat exchanger 3, and the fourth port being connected to the first end of the indoor heat exchanger 10.

The accumulator 6 is connected in series between the second end of the indoor heat exchanger 10 and the second end of the outdoor heat exchanger 3; one of the throttling mechanism 5 and the first switch device 8 is arranged on a first pipeline 30 between the liquid storage device 6 and the second end of the outdoor heat exchanger 3, the other one of the throttling mechanism 5 and the first switch device 8 is arranged on a second pipeline 40 between the liquid storage device 6 and the second end of the indoor heat exchanger 10, and the throttling mechanism 5 and the first switch device 8 are respectively used for controlling the on-off of the pipeline where the throttling mechanism 5 and the first switch device 8 are arranged; wherein, in response to a shutdown command, one of the throttling mechanism 5 and the first switching device 8 is opened, the other of the throttling mechanism 5 and the first switching device 8 is closed, and the compressor 1 continues to operate, so that the second pipeline 40 is disconnected and the first pipeline 30 is conducted.

In the air conditioner provided by the technical scheme of the invention, in response to a shutdown instruction, the air conditioner is shut down, and the other one of the throttling mechanism 5 and the first switching device 8 is controlled to be closed, so that the second pipeline 40 is disconnected, one of the throttling mechanism 5 and the first switching device 8 is kept on, so that the first pipeline 30 is conducted, and the compressor 1 is kept running continuously, so that the refrigerant discharged from the air outlet 11 of the compressor 1 flows into the liquid accumulator 6 through the reversing component 2 and the outdoor heat exchanger 3 and is gradually accumulated in the liquid accumulator 6. When the air conditioner is started up next time and operates in the refrigeration mode, the refrigerant stored in the liquid reservoir 6 can quickly flow into the indoor heat exchanger 10, so that the speed of the refrigerant reaching the indoor heat exchanger 10 can be shortened, and the starting-up and refrigeration speed can be increased.

The first embodiment is as follows:

As shown in fig. 1, the accumulator 6 is connected in series between the second end of the indoor heat exchanger 10 and the second end of the outdoor heat exchanger 3; the throttling mechanism 5 is arranged on a first pipeline 30 between the liquid storage device 6 and the second end of the outdoor heat exchanger 3, the throttling mechanism 5 is used for controlling the on-off of the first pipeline 30, the first switching device 8 is arranged on a second pipeline 40 between the liquid storage device 6 and the second end of the indoor heat exchanger 10, and the first switching device 8 is used for controlling the on-off of the second pipeline 40; in response to the shutdown instruction, the first switching device 8 is controlled to be turned off, the compressor 1 is maintained to continue to operate, and the throttling mechanism 5 is maintained to be turned on, so that the second pipeline 40 is turned off, and the first pipeline 30 is turned on.

compressor 1, outdoor heat exchanger 3, throttle 5, reservoir 6, first switching device 8 and indoor heat exchanger 10 connect gradually and form refrigerant circulation circuit, and under the refrigeration mode, the flow direction of refrigerant is:

The refrigerant discharged from the discharge port 11 of the compressor 1 flows into the outdoor heat exchanger 3 through the first port and the second port, flows into the indoor heat exchanger 10 through the throttle mechanism 5, the accumulator 6 and the first switching device 8, and flows back to the suction port 12 of the compressor 1 through the fourth port and the third port.

In response to the shutdown instruction, the first switch device 8 is controlled to close, so that the second pipeline 40 is disconnected, the throttle mechanism 5 is kept continuously opened, so that the first pipeline 30 is conducted, and the compressor 1 is kept continuously running, so that the refrigerant discharged from the exhaust port 11 of the compressor 1 flows into the liquid accumulator 6 through the reversing component 2, the outdoor heat exchanger 3 and the throttle mechanism 5 and is gradually accumulated in the liquid accumulator 6. When the air conditioner is started up next time and operates in the refrigeration mode, the refrigerant stored in the liquid reservoir 6 can quickly flow into the indoor heat exchanger 10, so that the speed of the refrigerant reaching the indoor heat exchanger 10 can be shortened, and the starting-up and refrigeration speed can be increased.

The first switch device 8 is disposed on the second pipeline 40, and the first switch device 8 includes a second one-way electromagnetic cut-off valve or a second two-way electromagnetic cut-off valve, wherein the second one-way electromagnetic cut-off valve is configured to selectively turn on or off the second pipeline 40 in the cooling mode, so that the on/off control of the second pipeline 40 is realized by controlling the on/off of the second one-way electromagnetic cut-off valve, and the structure of the air conditioner can be further simplified by adopting the second one-way electromagnetic cut-off valve.

further, the throttle mechanism 5 includes a throttle mechanism body 51 and a second switching device 52 connected in series,

the second switching device 52 is used for controlling on/off of the first pipeline 30, the second switching device 52 is arranged between the second end of the outdoor heat exchanger 3 and the throttle mechanism body 51, the outdoor heat exchanger 3, the second switching device 52 and the throttle mechanism body 51 are sequentially arranged, or the second switching device 52 is arranged far away from the outdoor heat exchanger 3, namely the second switching device 52 is arranged between the throttle mechanism body 51 and the liquid reservoir 6, and the outdoor heat exchanger 3, the throttle mechanism body 51 and the second switching device 52 are sequentially arranged.

the throttle mechanism body 51 can have a cut-off function, and at this time, the throttle mechanism body 51 can also be used for controlling the on-off of a pipeline where the throttle mechanism body 51 is located, for example, the throttle mechanism body 51 is an electronic expansion valve, so that if the pipeline where the throttle mechanism 5 is located needs to be controlled to be conducted, the second switch device 52 and the throttle mechanism body 51 need to be controlled to be opened at the same time; 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 throttle mechanism 5 on the first pipeline 30 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 liquid storage device 6 when the air conditioner shutdown compressor 1 continues to operate, the cold air outlet speed of the air conditioner is increased when the air conditioner is started next time, and the refrigerating speed is increased.

The second switching device 52 is provided on the first pipe 30, and the second switching device 52 includes a first one-way electromagnetic cut-off valve, a first two-way electromagnetic cut-off valve, or a first one-way mechanical valve configured to be turned on in a direction from the second end of the outdoor heat exchanger 3 to the second end of the indoor heat exchanger 10.

in the case where the throttle mechanism 5 is provided on the first pipeline 30, that is, the second switching device 52 is provided on the first pipeline 30, the second switching device 52 includes a first one-way electromagnetic cut-off valve, a first two-way electromagnetic cut-off valve, or a first one-way mechanical valve, in which control is simpler when the first one-way electromagnetic cut-off valve is employed.

example two:

On the basis of the first embodiment, as shown in fig. 3, the air conditioner includes: a water reservoir 7, the water reservoir 7 including a housing 71, the reservoir 6 being located within the housing 71, the housing 71 being for receiving the condensed water generated by the indoor heat exchanger 10.

In the operation of the cooling mode, the indoor heat exchanger 10 generates condensed water, the generated condensed water enters the shell 71 to be stored, and the temperature of the condensed water is lower, so that the condensed water can exchange heat with a refrigerant in the liquid storage device 6 to cool the refrigerant stored in advance, and the temperature of the refrigerant in the liquid storage device 6 is reduced, so that the amount of the refrigerant entering the indoor side is increased when the refrigerator is started, the temperature of the refrigerant is reduced, and the quick refrigeration is further facilitated.

The water reservoir 7 and the indoor heat exchanger 10 may be connected by a condensate pipe 9, and the condensate water generated by the indoor heat exchanger 10 flows into the case 71 through the condensate pipe 9. It is also possible that the water reservoir 7 is provided in correspondence with the indoor heat exchanger 10, for example, below the indoor heat exchanger 10, and the condensed water drops into the water reservoir 7 by its own weight.

Further, the housing 71 comprises a thermal insulation material, i.e. the water reservoir 7 has a thermal insulation function.

Casing 71 includes insulation material to can realize the heat preservation to the comdenstion water, further strengthen the cooling capacity of comdenstion water to the refrigerant in the reservoir 6, insulation material can also realize the heat preservation to reservoir 6, prevents that the refrigerant temperature in the reservoir 6 from rising.

Example three:

The difference from the first embodiment and the second embodiment is that, as shown in fig. 2 and 4, the throttle mechanism 5 is a cut-off throttle mechanism 5 that 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 first pipeline 30, and a switch device for controlling the on-off of the first pipeline 30 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.

the electronic expansion valve can control the flow of the refrigerant according to a program, thereby enhancing the intelligent level of the air conditioner.

Example four:

the difference between the first embodiment and the second embodiment is that a first switching device 8 is arranged on a first pipeline 30 between the liquid reservoir 6 and the second end of the outdoor heat exchanger 3, the first switching device 8 is used for controlling the on-off of the first pipeline 30, a throttling mechanism 5 is arranged on a second pipeline 40 between the liquid reservoir 6 and the second end of the indoor heat exchanger 10, and the throttling mechanism 5 is used for controlling the on-off of the second pipeline 40; in response to the shutdown instruction, the throttle mechanism 5 is controlled to close, the compressor 1 is maintained to continue to operate, and the first switching device 8 is maintained to open, so that the second pipeline 40 is disconnected, and the first pipeline 30 is connected.

The first switching device 8 is arranged on the first pipeline 30, the throttling mechanism 5 is arranged on the second pipeline 40, and the compressor 1, the outdoor heat exchanger 3, the first switching device 8, the liquid reservoir 6, the throttling mechanism 5 and the indoor heat exchanger 10 are sequentially connected to form a refrigerant circulation loop. In response to the shutdown instruction, the throttle mechanism 5 is controlled to close, so that the second pipeline 40 is disconnected, the first switching device 8 is kept to be continuously opened, so that the first pipeline 30 is conducted, and the compressor 1 is kept to be continuously operated, so that the refrigerant discharged from the exhaust port 11 of the compressor 1 flows into the liquid accumulator 6 through the reversing component 2, the outdoor heat exchanger 3 and the first switching device 8 and is gradually accumulated in the liquid accumulator 6. When the air conditioner is started up next time and operates in the refrigeration mode, the refrigerant stored in the liquid reservoir 6 can quickly flow into the indoor heat exchanger 10, so that the speed of the refrigerant reaching the indoor heat exchanger 10 can be shortened, and the starting-up and refrigeration speed can be increased.

The first switching device 8 is disposed on the first pipe 30, and the first switching device 8 includes a second one-way electromagnetic cut-off valve, a second two-way electromagnetic cut-off valve, or a second one-way mechanical valve configured to be conducted in a direction from the second end of the outdoor heat exchanger 3 to the second end of the indoor heat exchanger 10, and the second one-way electromagnetic cut-off valve and the second one-way mechanical valve may further simplify the structure of the air conditioner.

The throttling mechanism 5 comprises a throttling mechanism body 51 and a second switching device 52 which are connected in series, the second switching device 52 is used for controlling the on-off of the second pipeline 40, the second switching device 52 is arranged between the second end of the indoor heat exchanger 10 and the throttling mechanism body 51, the liquid reservoir 6, the throttling mechanism body 51, the second switching device 52 and the indoor heat exchanger 10 are arranged in sequence, or the second switching device 52 is arranged far away from the indoor heat exchanger 10, namely the second switching device 52 is arranged between the throttling mechanism body 51 and the liquid reservoir 6, the liquid reservoir 6 and the liquid reservoir 6 are arranged in sequence,

The second switching device 52, the throttle mechanism body 51, and the indoor heat exchanger 10 are provided in this order.

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 pipeline where the throttle mechanism body is located, 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 throttling mechanism 5 on the second pipeline 40 is realized through the combination of the throttling mechanism body 51 and the second switch device 52, so that a refrigerant can be stored in the liquid storage device 6 when the air conditioner shutdown compressor 1 continues to operate, the cold air outlet speed of the air conditioner is increased when the air conditioner is started next time, and the refrigerating speed is increased.

Further, the second switching device 52 includes a first one-way electromagnetic shutoff valve or a first two-way electromagnetic shutoff valve, wherein the first one-way electromagnetic shutoff valve is configured to selectively open or close the second pipeline 40 in the cooling mode.

Example five:

The difference from the fourth embodiment is that the throttle means 5 is 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 second pipeline 40, and a switch device for controlling the on-off of the second pipeline 40 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.

An embodiment of a second aspect of the present invention provides a control method for controlling the air conditioner described above.

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 embodiments of the first aspect, the control method including: step S50, in response to the shutdown command, maintains one of the throttling mechanism 5 and the first switching device 8 on, controls the other of the throttling mechanism 5 and the first switching device 8 off, and maintains the compressor 1 to continue operating, so that the second pipeline 40 is disconnected and the first pipeline 30 is connected.

In response to a shutdown instruction, the control method according to the embodiment of the second aspect of the present invention controls one of the first switching device 8 and the throttling mechanism 5 close to the indoor heat exchanger 10 to turn off the second pipeline 40, maintains the first switching device 8 and one of the throttling mechanism 5 close to the outdoor heat exchanger 3 to turn on the first pipeline 30, and maintains the compressor 1 to continue operating, so that the refrigerant discharged from the exhaust port 11 of the compressor 1 flows into the liquid reservoir 6 through the reversing component 2 and the outdoor heat exchanger 3 and is gradually accumulated in the liquid reservoir 6 when the air conditioner is shutdown. When the air conditioner is started up next time and operates in the refrigeration mode, the refrigerant stored in the liquid reservoir 6 can quickly flow into the indoor heat exchanger 10, so that the speed of the refrigerant reaching the indoor heat exchanger 10 can be shortened, and the starting-up and refrigeration speed can be increased.

Example six:

the sixth embodiment provides a control method for controlling the air conditioners in the first, second and third embodiments.

in the case where the throttle mechanism 5 is provided on the first pipe 30 and the first switching device 8 is provided on the second pipe 40, as shown in fig. 6, the control method of the air conditioner includes:

Step S604, in response to the shutdown instruction, controls the first switch device 8 to close, maintains the compressor 1 to continue to operate, and maintains the throttle mechanism 5 to open, so as to disconnect the second pipeline 40 and connect the first pipeline 30.

when the air conditioner is shut down in response to a shutdown instruction, the first switching device 8 is controlled to be closed, so that the second pipeline 40 is disconnected, the throttling mechanism 5 is kept to be continuously opened, the first pipeline 30 is conducted, and the compressor 1 is kept to be continuously operated, so that the refrigerant discharged from the exhaust port 11 of the compressor 1 flows into the liquid accumulator 6 through the reversing component 2, the outdoor heat exchanger 3 and the throttling mechanism 5 and is gradually accumulated in the liquid accumulator 6. When the air conditioner is started up next time and operates in the refrigeration mode, the refrigerant stored in the liquid reservoir 6 can quickly flow into the indoor heat exchanger 10, so that the speed of the refrigerant reaching the indoor heat exchanger 10 can be shortened, and the starting-up and refrigeration speed can be increased.

in the case where the throttle mechanism 5 includes the throttle mechanism body 51 and the second switching device 52, the step S604 of maintaining the throttle mechanism 5 open specifically includes: the second switching device 52 is maintained open. For the embodiment in which the throttle body 51 is an electronic expansion valve, maintaining the throttle 5 open may further include maintaining the electronic expansion valve open.

Further, after step S604, the control method further includes:

Step S606, detecting working condition parameters of the air conditioner;

step S608, judging whether the working condition parameters of the air conditioner meet a first preset condition;

If the working condition parameters of the air conditioner meet the first preset condition, executing step S610, controlling the compressor 1 to stop running, and controlling the throttling mechanism 5 to close, so as to disconnect the first pipeline 30;

and if the working condition parameters of the air conditioner do not meet the first preset condition, returning to the step S604.

In step S610, when the throttle mechanism 5 includes the throttle mechanism body 51 and the second switching device 52, controlling the throttle mechanism 5 to close specifically includes: the second switching device 52 is controlled to be closed. For embodiments in which the throttle body 51 is an electronic expansion valve, maintaining the throttle 5 closed may further include controlling the electronic expansion valve to close.

when the operating mode parameter satisfies first preset condition, the throttle mechanism 5 of control setting on first pipeline 30 closes to make first pipeline 30 break off, and control compressor 1 stall, thereby with the refrigerant storage in reservoir 6, avoid the refrigerant to flow to outdoor heat exchanger 3 from reservoir 6, can also avoid in reservoir 6 after the refrigerant volume has reached preset refrigerant volume, in vain increase compressor 1's energy consumption. The refrigerant stored in the liquid accumulator 6 can accelerate the refrigerating speed of the air conditioner when the air conditioner is started next time.

Further, the condition parameter of the air conditioner meeting the first preset condition specifically includes: any one of the compressor 1 continuously operates for a time period longer than the first preset time period T1, the suction pressure of the compressor 1 is lower than the first preset pressure P1, and the suction temperature of the compressor 1 is lower than the first preset temperature T1.

and when the continuous operation time of the compressor 1 is longer than a first preset time T1, or the suction pressure of the compressor 1 is smaller than a first preset pressure P1, or the suction temperature of the compressor 1 is smaller than a first preset temperature T1, judging that the working condition parameters of the air conditioner meet a first preset condition.

The operating parameters include the duration of the compressor 1, the suction pressure of the compressor 1, which is the pressure at the suction port 12 of the compressor 1, or the suction temperature, which is the temperature at the suction port of the compressor 1. When the continuous operation time of the compressor 1 is longer than the first preset time, the compressor 1 is controlled to stop operating in time, so that a proper amount of refrigerant is stored in the liquid storage device 6, and the problem that the energy consumption of the air conditioner is high due to the long-term operation of the compressor 1 can be avoided.

Further, the first preset time period t1 ranges from 10s to 120 s. The first preset time period may be, but is not limited to, 10s, 40s, 80s, or 120 s.

The range of the first preset time is controlled to be 10 s-120 s, the situation that the refrigerant stored in the liquid storage device 6 is insufficient due to the fact that the first preset time is shorter than 10s is avoided, and the situation that the refrigerant quantity discharged by the compressor 1 is larger than the capacity of the liquid storage device 6 due to the fact that the first preset time is longer than 120s and the energy consumption of the compressor 1 is high is also avoided.

The first preset pressure P1 is in the range of 0MPa to 0.6MPa, so that an appropriate amount of refrigerant is stored in the accumulator 6. The first preset pressure may be, but is not limited to, 0MPa, 0.3MPa, or 0.6 MPa.

the first preset temperature is in the range of-30-0 ℃, the compressor is controlled to stop running in time, the damage to the compressor caused by overhigh energy consumption of the compressor and long-term idling of the compressor is avoided, and a proper amount of refrigerant can be stored in the liquid storage device 6. The first preset temperature may be, but is not limited to, -30 ℃, -20 ℃, -10 ℃ or 0 ℃.

Further, the control method further comprises:

Step S602, in response to the refrigeration mode power-on command, controls the first switch device 8 and the throttle mechanism 5 to be turned on, and controls the compressor 1 to be turned on, so as to conduct the first pipeline 30 and the second pipeline 40.

And responding to the starting instruction of the refrigeration mode, starting the air conditioner to operate, and operating in the refrigeration mode. In order to ensure the normal circulation of the refrigerant, the first switch device 8 and the throttle mechanism 5 are controlled to be opened, so that the first pipeline 30 is conducted, the second pipeline 40 is conducted, and the refrigerant flowing out of the exhaust port 11 of the compressor 1 passes through the outdoor heat exchanger 3 and the indoor heat exchanger 10 to realize the refrigeration cycle.

Step S602 may be located before step S604 or after step S604.

If the throttle mechanism 5 comprises the throttle mechanism body 51 and the second switching device 52; in step S602, controlling the throttle mechanism 5 to open specifically includes: the second switching device 52 is controlled to be turned on. In the case where the throttle mechanism body 51 is an electronic expansion valve, controlling the opening of the throttle mechanism 5 further includes controlling the opening of the electronic expansion valve.

In the case that the throttle mechanism 5 includes the throttle mechanism body 51 and the second switching device 52, when the engine is started, it is necessary to ensure that the first pipeline 30 or the second pipeline 40 where the throttle mechanism 5 is located is conducted, so that the throttle mechanism 5 needs to be controlled to be opened, and the control of opening the throttle mechanism 5 includes the control of opening the second switching device 52.

in a specific embodiment of the air conditioner shown in fig. 1, in a case where the throttling mechanism includes the second switching device, and the second switching device is a first solenoid valve (the first solenoid valve may be a first one-way electromagnetic shutoff valve or a first two-way electromagnetic shutoff valve), and the first switching device includes a second solenoid valve (the second solenoid valve may be a second one-way electromagnetic shutoff valve or a second two-way electromagnetic shutoff valve), the control method includes steps S702 to S712 shown in fig. 7. In step S702 and step S706, a power-on command and a power-off command from the air conditioner remote controller may be received, respectively. And when the air conditioner receives a refrigerating mode starting operation instruction, the first electromagnetic valve and the second electromagnetic valve are opened simultaneously. When the air conditioner receives a shutdown signal, the second electromagnetic valve is closed first, and meanwhile the compressor is kept running continuously, so that the refrigerant is gradually stored in the liquid storage device. There are three methods for judging whether the compressor stops operating: the first is that the compressor continues to operate for a first preset time T1, the second is that whether the suction pressure of the compressor is smaller than a first preset pressure p1 is judged, the third is that the suction temperature of the compressor is smaller than a first preset temperature T1, if one condition is met, the compressor stops operating, meanwhile, the first electromagnetic valve is closed, the refrigerant is stored in the liquid storage device and used when the compressor is started for the next time, and the starting and refrigerating speed is accelerated.

as shown in fig. 8, corresponding to the air conditioner shown in fig. 2, in a specific embodiment, the control method includes steps S802 to S812, where the solenoid valve in fig. 8 is a first switching device. And when the air conditioner receives a refrigerating mode starting operation instruction, the electromagnetic valve and the throttling mechanism are opened simultaneously. When the air conditioner receives a shutdown signal, the electromagnetic valve is closed firstly, and meanwhile, the compressor is kept to continue to operate, so that the refrigerant is gradually stored in the liquid storage device. There are three methods for judging whether the compressor stops operating: the first is that the compressor continues to operate for a first preset time T1, the second is that whether the suction pressure of the compressor is smaller than a first preset pressure p1 is judged, the third is that the suction temperature of the compressor is smaller than a first preset temperature T1, if one condition is met, the compressor stops operating, meanwhile, a throttling mechanism is closed, a refrigerant is stored in a liquid container and used when the compressor is started for the next time, and the starting and refrigerating speed is accelerated.

For the case where the air conditioner includes the water reservoir 7, the control method further includes: the working condition parameters of the air conditioner meet a second preset condition, and the condensed water in the water storage device 7 is discharged.

The condensed water in the water receiver 7 is discharged or replaced regularly, so that the temperature and the water quantity of the condensed water in the water receiver 7 are kept in a proper range, and the condensed water in the water receiver 7 is ensured to have good cooling and heat preservation effects on the refrigerant in the liquid receiver 6 all the time.

Further, the second preset condition includes: any one of the time since the last discharge time exceeded the second preset time period, the amount of the condensed water in the water reservoir 7 reached the preset amount of water, and the temperature of the condensed water in the water reservoir 7 exceeded the second preset temperature.

When any one of the conditions that the last discharge time exceeds a second preset duration, the condensate water amount in the water receiver 7 reaches a preset water amount, and the temperature of the condensate water in the water receiver 7 exceeds a second preset temperature is met, the condensate water in the water receiver 7 is discharged, on one hand, the temperature of the condensate water is guaranteed not to be too high, and the cooling effect on a refrigerant is lost, and on the other hand, the condensate water amount in the water receiver 7 is prevented from being too large, so that the condensate water overflows from the water receiver 7.

in a specific embodiment, as shown in fig. 9, the control method includes steps S902 to S914, in the case where the throttle mechanism includes the second switching device, and the second switching device is the first solenoid valve (the first solenoid valve may be the first one-way electromagnetic shutoff valve or the first two-way electromagnetic shutoff valve), and the first switching device includes the second solenoid valve (the second solenoid valve may be the second one-way electromagnetic shutoff valve or the second two-way electromagnetic shutoff valve). And when the air conditioner receives a refrigerating mode starting operation instruction, the first electromagnetic valve and the second electromagnetic valve are opened simultaneously. Condensed water generated in the operation process of the air conditioner enters the water storage device through the condensed water pipe to be stored. When the air conditioner receives a shutdown signal, the second electromagnetic valve is closed first, and meanwhile the compressor is kept running continuously, so that the refrigerant is gradually stored in the liquid storage device. There are three methods for judging whether the compressor stops operating: the first is that the compressor continues to operate for a first preset time T1, the second is that whether the suction pressure of the compressor is smaller than a first preset pressure p1 is judged, the third is that whether the suction temperature of the compressor is smaller than a first preset temperature T1 is judged, if one condition is met, the compressor stops operating, the first electromagnetic valve is closed, the refrigerant is stored in the liquid storage device, meanwhile, the condensed water in the water storage device cools and preserves the temperature of the refrigerant, and the refrigerant is used when the compressor is started for next refrigeration, so that the starting refrigeration speed is accelerated. The water in the water storage device can be discharged or replaced regularly, so that the water quantity and the temperature in the water storage device are in a proper range, and a good cooling and heat preservation effect is ensured.

in a specific embodiment corresponding to the air conditioner shown in fig. 4, as shown in fig. 10, the control method includes steps S1002 to S1012, where the solenoid valve in fig. 10 is a first switch device. And when the air conditioner receives a refrigerating mode starting operation instruction, the electromagnetic valve and the throttling mechanism are opened simultaneously. Condensed water generated in the operation process of the air conditioner enters the water storage device through the condensed water pipe to be stored. When the air conditioner receives a shutdown signal, the electromagnetic valve is closed firstly, and meanwhile, the compressor is kept to continue to operate, so that the refrigerant is gradually stored in the liquid storage device. There are three methods for judging whether the compressor stops operating: the first is that the compressor continues to operate for a first preset time T1, the second is that whether the suction pressure of the compressor is smaller than a first preset pressure p1 is judged, the third is that whether the suction temperature of the compressor is smaller than a first preset temperature T1 is judged, if one condition is met, the compressor stops operating, meanwhile, a throttling mechanism is closed, a refrigerant is stored in a liquid storage device, meanwhile, condensed water in a water storage device cools and preserves the temperature of the refrigerant, and the refrigerant is used when the compressor is started for next refrigeration, so that the starting refrigeration speed is accelerated. The water in the water storage device can be discharged or replaced regularly, so that the water quantity and the temperature in the water storage device are in a proper range, and a good cooling and heat preservation effect is ensured.

example seven:

A seventh embodiment provides a control method for controlling the air conditioner structures of the fourth and fifth embodiments, which is different from the sixth embodiment in that a first switch device 8 is disposed on a first pipeline 30, the first switch device 8 is used for controlling the on-off of the first pipeline 30, and a throttle mechanism 5 is disposed on a second pipeline 40, and is used for controlling the on-off of the second pipeline, as shown in fig. 11, the control method for the air conditioner includes:

Step S1104, in response to the shutdown instruction, controls the throttle mechanism 5 to close, maintains the compressor 1 to continue to operate, and maintains the first switch device 8 to open, so that the second pipeline 40 is disconnected and the first pipeline 30 is connected.

When the air conditioner is shut down in response to a shutdown instruction, the throttling mechanism 5 is controlled to be closed, so that the second pipeline 40 is disconnected, the first switching device 8 is kept to be continuously opened, so that the first pipeline 30 is conducted, and the compressor 1 is kept to be continuously operated, so that the refrigerant discharged from the exhaust port 11 of the compressor 1 flows into the liquid accumulator 6 through the reversing component 2, the outdoor heat exchanger 3 and the first switching device 8 and is gradually accumulated in the liquid accumulator 6. When the air conditioner is started up next time and operates in the refrigeration mode, the refrigerant stored in the liquid reservoir 6 can quickly flow into the indoor heat exchanger 10, so that the speed of the refrigerant reaching the indoor heat exchanger 10 can be shortened, and the starting-up and refrigeration speed can be increased.

In the case where the throttle mechanism 5 includes the throttle mechanism body 51 and the second switching device 52, in step S1104, controlling the throttle mechanism 5 to close specifically includes: the second switching device 52 is controlled to be closed. For the embodiment in which the throttle body 51 is an electronic expansion valve, controlling the throttle 5 to close may further include controlling the electronic expansion valve to close.

Further, after step S1104, the control method further includes:

Step S1106, detecting working condition parameters of the air conditioner;

Step S1108, judging whether the working condition parameters of the air conditioner meet a first preset condition;

if the working condition parameters of the air conditioner meet the first preset condition, executing step S1110, controlling the compressor 1 to stop running, and controlling the first switching device 8 to be closed, so as to disconnect the first pipeline 30;

And if the working condition parameters of the air conditioner do not meet the first preset condition, returning to the step S1106.

When the working condition parameters meet a first preset condition, the first switching device 8 arranged on the first pipeline 30 is controlled to be closed, so that the first pipeline 30 is disconnected, the compressor 1 is controlled to stop running, the refrigerant is stored in the liquid accumulator 6, and the refrigerant is prevented from flowing to the outdoor heat exchanger 3 from the liquid accumulator 6. The refrigerant stored in the liquid accumulator 6 can accelerate the refrigerating speed of the air conditioner when the air conditioner is started next time.

Further, the step S1108 that the operating condition parameter of the air conditioner satisfies the first preset condition specifically includes: any one of the compressor 1 continuously operates for a time period longer than a first preset time period t1, the suction pressure of the compressor 1 is lower than a first preset pressure P1, and the suction temperature of the compressor 1 is lower than a first preset temperature.

And when the continuous operation time of the compressor 1 is longer than a first preset time or the suction pressure of the compressor 1 is lower than a first preset pressure or the suction temperature of the compressor 1 is lower than a first preset temperature, judging that the working condition parameters of the air conditioner meet a first preset condition.

the operating parameters include the duration of the compressor 1, the suction pressure of the compressor 1, which is the pressure at the suction port 12 of the compressor 1, or the suction temperature, which is the temperature at the suction port of the compressor 1. When the continuous operation time of the compressor 1 is longer than the first preset time, the compressor 1 is controlled to stop operating in time, so that a proper amount of refrigerant is stored in the liquid storage device 6, and the problems that the energy consumption of the air conditioner is high due to the long-term operation of the compressor 1 and the compressor is damaged due to the long-term idle running of the compressor can be avoided.

Further, the first preset duration ranges from 10s to 120 s. The first preset time period may be, but is not limited to, 10s, 40s, 80s, or 120 s.

The range of the first preset time is controlled to be 10 s-120 s, the situation that the stored refrigerant in the liquid storage device 6 is insufficient due to the fact that the first preset time is shorter than 10s is avoided, and the situation that the amount of the refrigerant discharged by the compressor 1 is larger than the capacity of the liquid storage device 6 due to the fact that the first preset time is longer than 120s, the energy consumption of the compressor 1 is high and the compressor is damaged due to the fact that the compressor idles for a long time can also be avoided.

The first preset pressure is in the range of 0MPa to 0.6MPa, so that a proper amount of refrigerant is stored in the liquid reservoir 6. The first preset pressure may be, but is not limited to, 0MPa, 0.3MPa, or 0.6 MPa.

The first preset temperature range is-30-0 ℃, and on the premise of ensuring that a proper amount of refrigerant is stored in the liquid storage device, the high energy consumption of the air conditioner caused by the long-term operation of the compressor and the damage of the compressor caused by the long-term idle running of the compressor are prevented. The first preset temperature may be, but is not limited to, -30 ℃, -20 ℃, -10 ℃ or 0 ℃.

Further, the control method further comprises:

In step S1102, in response to the cooling mode power-on command, the first switch device 8 and the throttle mechanism 5 are controlled to be turned on, so that the first pipeline 30 is conducted and the second pipeline 40 is conducted.

Step S1102 may be located before step S1104 or after step S1104.

If the throttle mechanism 5 includes the throttle mechanism body 51 and the second switch device 52, in step S1102, controlling the throttle mechanism 5 to open specifically includes: the second switching device 52 is controlled to be turned on. In the case where the throttle mechanism body 51 is an electronic expansion valve, controlling the opening of the throttle mechanism 5 further includes controlling the opening of the electronic expansion valve.

In the case that the throttling mechanism 5 includes the throttling mechanism body and the second switching device 52, when the engine is started, it is necessary to ensure that the first pipeline 30 or the second pipeline 40 where the throttling mechanism 5 is located is conducted, so that the throttling mechanism 5 needs to be controlled to be opened, and the control of opening the throttling mechanism 5 includes the control of opening the second switching device 52.

in summary, according to the air conditioner and the control method thereof provided by the invention, the liquid reservoir and the first switch device are connected in series with the throttling mechanism to pre-store part of the refrigerant, so that the amount of the refrigerant entering the indoor side is increased when the air conditioner is started, the refrigerant is quickly supplemented to the indoor heat exchanger, the speed of air outlet and cooling when the air conditioner is started can be increased, and quick refrigeration is realized. And the condensed water produced by the indoor heat exchanger is stored by the water receiver and used for cooling the pre-stored refrigerant, so that the refrigerant quantity entering the indoor side is increased when the refrigerator is started, the temperature of the refrigerant is reduced, and the refrigerator is further favorable for realizing quick refrigeration.

an embodiment of the third aspect of the present invention provides a control apparatus 200, comprising a processor 202 and a memory 204, the processor 202 being configured to implement the steps of the control method according to any one of the embodiments of the first aspect when executing a computer program stored in the memory 204.

as shown in fig. 12, an embodiment of a fourth aspect of the present invention provides an air conditioner including a control device 200 as an embodiment of 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 202, implement the steps of the control method according to 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 202 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 202 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 a first port, a second port, a third port and a fourth port, wherein the first port is connected with the exhaust port, and the third port is connected with the suction port;

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;

an accumulator connected in series between the second end of the indoor heat exchanger and the second end of the outdoor heat exchanger;

One of the throttling mechanism and the first switch device is arranged on a first pipeline between the liquid storage device and the second end of the outdoor heat exchanger, the other of the throttling mechanism and the first switch device is arranged on a second pipeline between the liquid storage device and the second end of the indoor heat exchanger, and the throttling mechanism and the first switch device are respectively used for controlling the on-off of the pipeline where the throttling mechanism and the first switch device are arranged;

Wherein, in response to a shutdown command, maintaining the one of the throttling mechanism and the first switching device open, the other of the throttling mechanism and the first switching device closed, and maintaining the compressor to continue operating, so as to disconnect the second pipeline and connect the first pipeline.

2. The air conditioner according to claim 1,

the throttling mechanism comprises a throttling mechanism body and a second switch device which are connected in series, and the second switch device is used for controlling the on-off of a pipeline where the second switch device is located.

3. the air conditioner according to claim 2,

The second switching device is disposed on the first pipeline, and the second switching device comprises a first one-way electromagnetic cut-off valve, a first two-way electromagnetic cut-off valve or a first one-way mechanical valve, wherein the first one-way mechanical valve is configured to conduct in a direction from the second end of the outdoor heat exchanger to the second end of the indoor heat exchanger; alternatively, the first and second electrodes may be,

the second switching device is arranged on the second pipeline and comprises a first one-way electromagnetic stop valve or a first two-way electromagnetic stop valve, wherein the first one-way electromagnetic stop valve is configured to selectively conduct or disconnect the second pipeline in a refrigeration mode.

4. the air conditioner according to claim 2,

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

5. The air conditioner according to claim 1,

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

6. The air conditioner according to claim 5,

The stop throttling mechanism comprises an electronic expansion valve.

7. The air conditioner according to any one of claims 1 to 6,

The first switching device is disposed on the first pipeline, and the first switching device comprises a second one-way electromagnetic shutoff valve, a second two-way electromagnetic shutoff valve or a second one-way mechanical valve, wherein the second one-way mechanical valve is configured to conduct in a direction from the second end of the outdoor heat exchanger to the second end of the indoor heat exchanger;

The first switching device is arranged on the second pipeline and comprises a second one-way electromagnetic stop valve or a second two-way electromagnetic stop valve, wherein the second one-way electromagnetic stop valve is configured to selectively conduct or disconnect the second pipeline in a refrigeration mode.

8. The air conditioner according to any one of claims 1 to 6, comprising:

A water reservoir comprising a housing, the reservoir being located within the housing, the housing being adapted to receive condensate water produced by the indoor heat exchanger.

9. The air conditioner according to claim 8,

The housing includes a thermal insulation material.

10. A control method for controlling the air conditioner according to any one of claims 1 to 9, characterized by comprising:

And responding to a shutdown command, maintaining one of a throttling mechanism and a first switching device to be opened, controlling the other of the throttling mechanism and the first switching device to be closed, and maintaining the compressor to continue to operate so as to enable a first pipeline to be conducted and a second pipeline to be disconnected, wherein the first pipeline is arranged between a liquid storage device and a second end of an outdoor heat exchanger, the one of the throttling mechanism and the first switching device is arranged on the first pipeline, the second pipeline is arranged between the liquid storage device and a second end of an indoor heat exchanger, and the other of the throttling mechanism and the first switching device is arranged on the second pipeline.

11. the control method according to claim 10, wherein after maintaining one of a throttle mechanism and a first switching device open, controlling the other of the throttle mechanism and the first switching device closed, and maintaining the compressor running continuously in response to a shutdown command, comprises:

Detecting working condition parameters of the air conditioner;

And the working condition parameters of the air conditioner meet a first preset condition, the compressor is controlled to stop running, and the first switching device and the throttling mechanism are controlled to be closed so as to disconnect the first pipeline.

12. The control method according to claim 11,

The condition parameter meeting the first preset condition of the air conditioner specifically comprises the following steps: any one of the continuous operation time of the compressor is longer than a first preset time, the suction pressure of the compressor is lower than a first preset pressure, and the suction temperature of the compressor is lower than a first preset temperature.

13. the control method according to claim 12,

The range of the first preset time is 10 s-120 s, the range of the first preset pressure is 0 MPa-0.6 MPa, and the range of the first preset temperature is-30 ℃ to 0 ℃.

14. The control method according to claim 11, characterized by comprising:

And responding to a starting instruction of a refrigeration mode, and controlling the first switching device and the throttling mechanism to be opened so as to conduct the first pipeline and conduct the second pipeline.

15. The control method according to claim 10,

The throttling mechanism comprises a throttling mechanism body and a second switch device;

respond to the start-up instruction of refrigeration mode, control first switching device and throttle mechanism and open, specifically include: controlling the second switch device to be started;

if the shutdown instruction is responded, controlling the throttle mechanism to be closed, specifically comprising the following steps: controlling the second switching device to be closed;

If the shutdown instruction is responded, the step of maintaining the throttle mechanism to be started specifically comprises the following steps: maintaining the second switch device open.

16. The control method according to any one of claims 10 to 15, characterized by comprising:

And the working condition parameters of the air conditioner meet a second preset condition, and the condensed water in the water storage device is discharged.

17. The control method according to claim 16,

The second preset condition includes: any one of a time period exceeding a second preset time period since the last discharge, an amount of condensed water in the water reservoir reaching a preset amount, and a temperature of the condensed water in the water reservoir exceeding a second preset temperature.

18. 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 10 to 17 when executing a computer program stored in the memory.

19. An air conditioner characterized by comprising the control device according to claim 18.

20. 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 10 to 17.