CN115076782A

CN115076782A - Indoor unit, air conditioning system, and method and device for controlling air conditioning system

Info

Publication number: CN115076782A
Application number: CN202210562685.3A
Authority: CN
Inventors: 丁爽; 王飞; 许文明; 张心怡; 林超
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-09-20

Abstract

The application relates to the technical field of intelligent household appliances, and discloses an indoor unit, include: the shell is a hollow rectangular body, part of the shell is arranged indoors, the indoor part is provided with an indoor air inlet and an indoor air outlet, the outdoor part is provided with an outdoor air outlet, and the outdoor air outlet is communicated with the outdoor space and the indoor space; the fan is arranged in the shell, the blades are made of flexible materials, and the blades are turned over when rotating reversely, so that reverse air supply is realized; the fan motor is arranged in the shell, is electrically connected with the fan and is controlled to rotate forwards or backwards to drive the fan to rotate forwards or backwards; and the blocking part is controlled to block the indoor air inlet or the outdoor air outlet. And the control part responds to the refrigerant leakage instruction, controls the blocking part to block the outdoor air outlet and controls the fan motor to rotate reversely. The scheme can reverse the air outlet direction under the condition of detecting the leakage of the refrigerant, so that the leaked refrigerant can be blown out through the outdoor air outlet in time. The application also discloses an air conditioning system, and a method and a device for controlling the air conditioning system.

Description

Indoor unit, air conditioning system, and method and device for controlling air conditioning system

Technical Field

The present application relates to the field of intelligent home appliance technologies, and for example, to an indoor unit, an air conditioning system, and a method and apparatus for controlling an air conditioning system.

Background

To reduce greenhouse gas emissions and mitigate Global Warming, air conditioning systems have become an unblocked trend with refrigerants having low GWP (Global Warming Potential) and low ODP (Ozone depletion Potential). However, such refrigerants also have certain disadvantages. For example, R32, R290, R600a, etc. are flammable, and R717, etc. are both flammable and toxic. When the refrigerant leaks, fire or poisoning may occur, which may cause safety hazards.

Disclosed in the related art is a method for controlling an air conditioner, including: acquiring a first refrigerant concentration of an air inlet of an indoor unit in an air conditioner; determining that the first refrigerant concentration is greater than a first threshold value, controlling an outdoor unit of the air conditioner to stop and a fan in the indoor unit to reversely rotate, and acquiring a second refrigerant concentration of the air inlet after the fan reversely rotates for a preset time; and determining a refrigerant leakage position according to the first refrigerant concentration and the second refrigerant concentration.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

although the related art can make relatively accurate judgment on the leakage condition of the refrigerant, the leaked refrigerant cannot be discharged in time, and certain potential safety hazards still exist.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an indoor unit and an air conditioning system, and a method and a device for controlling the air conditioning system, so as to discharge leaked refrigerant in time under the condition that the refrigerant leaks.

In some embodiments, the indoor unit includes: the shell is a hollow rectangular body, part of the shell is arranged indoors, the indoor part is provided with an indoor air inlet and an indoor air outlet, the outdoor part is provided with an outdoor air outlet, and the outdoor air outlet is communicated with the outdoor space and the indoor space; the fan is arranged in the shell, the blades are made of flexible materials, and the blades are turned over when rotating reversely, so that reverse air supply is realized; the fan motor is arranged in the shell, is electrically connected with the fan and is controlled to rotate forwards or backwards to drive the fan to rotate forwards or backwards; the blocking part is controlled to block the indoor air inlet or the outdoor air outlet; and the control part responds to a refrigerant leakage instruction, controls the blocking part to block the outdoor air outlet and controls the fan motor to rotate reversely.

In some embodiments, the air conditioning system includes a compressor and an outdoor heat exchanger connected to the compressor, and further includes: the indoor unit is connected with the compressor through a first pipeline and connected with the outdoor heat exchanger through a second pipeline); wherein the second conduit is provided with a throttle device, which is controlled to open or close.

In some embodiments, the method is applied to the air conditioning system, and comprises the following steps: judging whether the refrigerant leaks or not; under the condition that the refrigerant is not leaked, the blocking part is controlled to block the outdoor air outlet and open the indoor air inlet; and under the condition of refrigerant leakage, the blocking part is controlled to open the outdoor air outlet and block the indoor air inlet, and the fan motor is controlled to rotate reversely to drive the fan to supply air reversely.

In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to, when executing the program instructions, perform the method for controlling an air conditioning system described above.

The indoor unit, the air conditioning system, and the method and the device for controlling the air conditioning system provided by the embodiment of the disclosure can achieve the following technical effects:

and under the condition that the leakage of the refrigerant is detected, the blocking part is controlled to block the indoor air inlet, open the outdoor air outlet and control the fan in the indoor unit to reversely run. Because the fan is made of flexible materials, when the fan rotates reversely, the blades turn over, the air outlet direction turns along with the blades, and leaked refrigerant is blown out through the outdoor air outlet. The leaked refrigerant is timely discharged under the condition that the refrigerant is leaked, and the safety is further improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present disclosure;

FIG. 2-1 is a schematic diagram of a connection of an air conditioning system according to an embodiment of the present disclosure;

2-2 are schematic connection diagrams of another air conditioning system provided by the embodiment of the disclosure;

fig. 3 is a schematic structural diagram of an indoor unit provided in the embodiment of the present disclosure;

fig. 4 is a schematic diagram of an indoor unit arrangement provided by the embodiment of the disclosure;

fig. 5 is a schematic structural diagram of a fan unit according to an embodiment of the present disclosure;

FIG. 6 is a schematic cross-sectional view of a fan provided in an embodiment of the present disclosure;

FIG. 7-1 is a schematic view of a wind direction in a forward rotation of a fan according to an embodiment of the present disclosure;

FIG. 7-2 is a schematic view of a wind direction in a case of reverse rotation of a fan according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a blocking portion provided in an embodiment of the present disclosure;

FIG. 9-1 is a schematic diagram of a rotation range of a fan in forward rotation according to an embodiment of the present disclosure;

FIG. 9-2 is a schematic diagram of a rotational domain of a fan in reverse rotation according to an embodiment of the present disclosure;

9-3 are schematic diagrams of a baffle path provided by embodiments of the present disclosure;

fig. 10-1 is a schematic view of an indoor unit in a normal operation condition according to an embodiment of the present disclosure;

fig. 10-2 is a schematic view of an indoor unit in case of refrigerant leakage according to an embodiment of the present disclosure;

fig. 11 is a schematic diagram of a method for controlling an air conditioning system according to an embodiment of the present disclosure;

FIG. 12 is a schematic diagram of another method for controlling an air conditioning system provided by an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of another method for controlling an air conditioning system provided by an embodiment of the present disclosure;

fig. 14 is a schematic diagram of an apparatus for controlling an air conditioning system according to an embodiment of the present disclosure.

Reference numerals:

1: an indoor unit; 2: an outdoor unit;

121: a first conduit; 122: a second conduit;

10: a housing; 11: a fan; 12: a fan motor; 13: a blocking portion; 14: an indoor heat exchanger; 15: a control unit; 21: a compressor; 22: an outdoor heat exchanger; 23: a throttling device;

101: an indoor air inlet; 102: an indoor air outlet; 103: an outdoor air outlet;

111: an indoor section; 112: a wall portion; 113: an outdoor part;

131: a baffle plate; 132: a traction device; 1321: a traction motor; 1322: and (4) a connecting device.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The term "plurality" means two or more, unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.

In the embodiment of the disclosure, the intelligent household appliance is a household appliance formed by introducing a microprocessor, a sensor technology and a network communication technology into the household appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent household appliance usually depends on the application and processing of modern technologies such as internet of things, internet and an electronic chip, for example, the intelligent household appliance can realize the remote control and management of a user on the intelligent household appliance by connecting the intelligent household appliance with the electronic device.

In the disclosed embodiment, the terminal device is an electronic device with a wireless connection function, and the terminal device can be in communication connection with the above intelligent household appliance by connecting to the internet, or can be in communication connection with the above intelligent household appliance directly in a bluetooth mode, a wifi mode, or the like. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a vehicle-mounted device built in a floating car, or any combination thereof. The mobile device may include, for example, a cell phone, a smart home device, a wearable device, a smart mobile device, a virtual reality device, or the like, or any combination thereof, wherein the wearable device includes, for example: intelligent wrist-watch, intelligent bracelet, pedometer etc..

Referring to fig. 1 and 2-1, an embodiment of the present disclosure provides an air conditioning system including an indoor unit 1 and an outdoor unit 2. The indoor unit 1 and the outdoor unit 2 are connected to each other by a first duct 121 and a second duct 122.

Specifically, the indoor unit 1 includes an indoor heat exchanger 14. The outdoor unit 2 includes a compressor 21 and an outdoor heat exchanger 22 connected to the compressor 21. The indoor heat exchanger 14 is connected to the compressor 21 through a first pipe 121, and is connected to the outdoor heat exchanger 22 through a second pipe 122.

A throttle device 23 is provided on the second pipe 122 to control the flow rate of the refrigerant in the second pipe 122. The throttle device 23 can be controlled or closed and is in a conducting state during normal operation. The throttle device 23 comprises a solenoid valve. The expansion device 23 may be provided in a connection portion between the indoor unit 1 and the outdoor unit 2 (as shown in fig. 2-1), or may be provided in the outdoor unit 2 (as shown in fig. 2-2).

The structure of the indoor unit 1 will be further described with reference to fig. 3. The indoor unit 1 includes a casing 10, and an indoor fan part and a blocking part 13 provided in the casing 10.

The housing 10 is formed as a hollow rectangular body, and is partially disposed in a room. The arrangement may be a through-wall arrangement (as shown in fig. 4) and may be divided into three parts, an indoor part 111, a wall part 112 and an outdoor part 113. The indoor portion 111 is provided with an indoor air inlet 101 and an indoor air outlet 102, and the outdoor portion 113 is provided with an outdoor air outlet 103. The outdoor air outlet 103 communicates outdoor and indoor.

The indoor air inlet 101 may be disposed at the top of the indoor unit 1, or may be disposed at the bottom of the indoor unit 1. The embodiment of the present disclosure is explained in the case of being disposed on the top.

The indoor fan section includes a fan 11 and a fan motor 12 (shown in fig. 5).

The fan 11 and the blades are made of flexible material. When the fan rotates reversely, the blades turn over to realize reverse air supply. Specifically, the fan 11 is an axial flow fan, and a side structure thereof is shown in fig. 6. The air outlet direction of the axial flow fan is related to the running direction of the motor and the structural shape of the blades. When the motor is turned after the flexible material is used as the fan blades, the blowing direction of the fan 11 is correspondingly turned. The direction of the wind when the fan 11 is rotated in the normal direction is shown in FIG. 7-1, and the direction of the wind when the fan is rotated in the reverse direction is shown in FIG. 7-2.

And a fan motor 12 electrically connected to the fan 11 and controlled to rotate forward or backward and drive the fan 11 to rotate forward or backward.

And the blocking part 13 is controlled to block the indoor air inlet 101 or the outdoor air outlet 103.

And the control part 15 can control the fan motor 12 to rotate forwards or backwards according to the received instruction, and control the blocking part 13 to move to block the indoor air inlet 101 or the outdoor air outlet 103. Specifically, in response to the refrigerant leakage instruction, the blocking portion 13 is controlled to block the outdoor air outlet 103, and the fan motor 12 is controlled to rotate reversely.

By adopting the air conditioning system provided by the embodiment of the disclosure, the fan in the indoor unit is made of flexible material, and the blocking part capable of blocking the indoor air inlet or the outdoor air outlet is arranged. Under the condition that the refrigerant leaks, the blocking part is controlled to block the indoor air inlet and open the outdoor air outlet, and the fan is controlled to run reversely to realize reverse air supply, so that the leaked refrigerant is blown out through the outdoor air outlet in the process. Therefore, the leaked refrigerant can be timely treated, and the safety is guaranteed.

Here, the structure of the stopper 13 will be further described with reference to fig. 8.

The blocking portion 13 includes a barrier 131 and a traction device 132.

And a baffle 131 connected to the housing 10 and sized to completely cover the indoor intake opening 101 or the outdoor outlet opening 103.

And the traction device 132 is controlled to draw the baffle 131 to move so as to block the indoor air inlet 101 or the outdoor air outlet 103. Optionally, traction device 132 includes a traction motor 1321 and a connection device 1322. The traction motor 1321 is a transmission motor, and is controlled to exert a traction effect on the connecting device 1322. The connecting device 1322 connects the casing 10 and the baffle 131, and the baffle 131 is pulled to block the indoor air inlet 101 or the outdoor air outlet 103 by the driving of the pulling motor 1321.

Alternatively, the connection device 1322 may be a chain or a belt.

Optionally, the blocking portion 13 further includes a fixing device 133 disposed on the surface of the blocking plate 131 and/or the housing 10 for controllably fixing or releasing the blocking plate 131. In particular, the fixing means 133 may be an electromagnetic component. When the indoor air inlet 101 needs to be sealed, the electromagnetic component at the indoor air inlet 101 is electrified, so that the baffle 131 is tightly attached to the shell 10, and air leakage is reduced. When the outdoor air outlet 103 needs to be sealed and closed, the electromagnetic component at the indoor air inlet 101 is controlled to be powered off, the baffle 131 is pulled to the position for sealing the outdoor air outlet 103 through the traction device 132, and the electromagnetic component at the position for sealing the outdoor air outlet 103 is controlled to be powered on. Therefore, the plugging can be more compact, air leakage is avoided, the leaked refrigerant is further guaranteed to be blown out from the outdoor air outlet, and the refrigerant is prevented from staying indoors.

In the actual operation process, the indoor unit normally operates under the condition that no refrigerant leakage occurs. As shown in fig. 10-1, the baffle 131 blocks the outdoor air outlet 103. At this time, the fan 11 rotates forward, the indoor air inlet 101 is opened, air flows in from the indoor air inlet 101, and flows into the room through the indoor air outlet after being cooled, so that temperature adjustment is achieved. In case of refrigerant leakage, as shown in fig. 10-2, the baffle 13 blocks the indoor air inlet 101 and opens the outdoor air outlet 103. After flowing through the indoor outlet, the air flows to the outside through the outdoor outlet 103, and the leaked refrigerant is blown out.

Alternatively, the position setting manner of the baffle 131 is determined and calculated according to the rotation field of the fan 11. For an axial fan, a cylindrical rotating area is formed during rotation (fig. 9-1 is a schematic view of the rotating area of the fan in normal operation, and fig. 9-2 is a schematic view of the rotating area of the fan in reverse operation), and the radius is the maximum distance from the edge of the fan to the axis of the fan. As shown in fig. 9-3, the position of the barrier 131 is set to ensure that the movement path of the barrier 131 is outside the rotation range. Therefore, the baffle and the fan can be prevented from colliding in the operation process.

Further, the minimum distance between the rotation domain and the baffle and the motion path of the baffle should be greater than or equal to the preset distance. Here, the preset distance may be 10 mm. Therefore, friction and even collision between the baffle and the fan caused by factors such as motor vibration, shaft deviation and the like in the running process can be avoided.

In other embodiments, the blocking portion 13 optionally comprises a plurality of baffles. Such as a first baffle for blocking or opening the indoor air inlet 101 and a second baffle for blocking or opening the outdoor air outlet 103. In the normal operation process, the first baffle opens the indoor air inlet 101, and the second baffle blocks the outdoor air outlet 103. When the refrigerant leaks, the first baffle blocks the indoor air inlet 101, and the second baffle opens the outdoor air outlet 103. Therefore, the indoor air inlet or the outdoor air outlet can be blocked in a controlled manner, so that leaked refrigerant can be blown to the outdoor in time.

Optionally, in a case where the indoor air inlet is disposed at the bottom of the casing of the indoor unit, the blocking portion may include a baffle and an electromagnetic component, and the baffle may be configured to be fixed by the electromagnetic component to block the outdoor air outlet. Under the condition that the refrigerant is leaked, the control part controls the electromagnetic part to be powered off, so that the baffle plate falls off and blocks the indoor air inlet positioned at the bottom. Thus, the function of blowing out the leaked refrigerant to the indoor unit is realized, and the structure is simplified.

Optionally, under the condition that the air conditioning system has a fresh air function, the fresh air channel can be used as an exhaust channel for blowing out the refrigerant. Thus, the refrigerant can be blown out without making a large change in the structure.

Fig. 11 is a schematic diagram of a method for controlling an air conditioning system according to an embodiment of the present disclosure. The method for controlling the air conditioning system can be performed in the air conditioning system, and can also be performed in a server communicating with the air conditioning system. In the embodiment of the present disclosure, a description is made of a scheme in which a control unit of an air conditioning system is an execution subject.

As shown in fig. 11, the method for controlling an air conditioning system includes:

and S110, starting.

S111, the control part judges whether the refrigerant leaks.

And S112, under the condition that the refrigerant is not leaked, the control part controls the blocking part to block the outdoor air outlet and open the indoor air inlet.

And S113, under the condition that the refrigerant is leaked, the control part controls the blocking part to open the outdoor air outlet and block the indoor air inlet, and controls the fan motor to rotate reversely to drive the fan to supply air reversely.

By adopting the method provided by the embodiment of the disclosure, the leakage condition of the refrigerant can be automatically judged, the fan can supply air in the forward direction under the condition that the refrigerant is not leaked, the blocking part blocks the outdoor air outlet, the air conditioning system operates normally, and refrigeration is realized. And under the condition that the leakage of the refrigerant is detected, controlling the fan to reversely supply air, and simultaneously opening the outdoor air outlet to blow out the leaked refrigerant from the outdoor air outlet. Therefore, the leaked refrigerant can be discharged out of the air conditioning system in time, and the safety guarantee is facilitated.

Alternatively, the control part determining whether the refrigerant leaks includes: the control part obtains the concentration of the refrigerant from the air inlet of the indoor unit, and judges that the refrigerant leaks under the condition that the concentration of the refrigerant is greater than a preset threshold value. Specifically, a sensor is arranged at an air inlet of the indoor unit to detect the concentration of the refrigerant. Therefore, whether the refrigerant leaks can be intuitively and accurately judged, and the leaked refrigerant can be timely treated.

Alternatively, the control part determining whether the leakage of the refrigerant occurs includes: the control part detects whether system pressure and/or temperature are abnormal, and judges that the refrigerant leaks when the system pressure and/or temperature exceed a preset pressure range or temperature range. Therefore, whether the refrigerant leakage occurs or not can be accurately judged, and the leaked refrigerant can be blown out in time.

Optionally, the control division control blocks open outdoor air outlet of portion, the indoor air intake of shutoff to control fan motor reversal, drive the reverse air supply of fan, include: the control part controls the electromagnetic part to be powered off, and the traction motor drives the baffle to move through the connecting device, so that the baffle leaves the outdoor air outlet and blocks the indoor air inlet. And then the electromagnetic component at the air inlet in the control room is electrified to fix the baffle.

Optionally, in case of refrigerant leakage, the method further comprises: the control unit issues a leakage prompt. Therefore, the refrigerant leakage situation can be known for the first time by the user, and other auxiliary operations such as windowing ventilation and the like can be selectively performed.

Fig. 12 is a schematic diagram of a method for controlling an air conditioning system according to an embodiment of the present disclosure. The method for controlling the air conditioning system can be performed in the air conditioning system and also in a server communicating with the air conditioning system. In the embodiment of the present disclosure, a description is made of a scheme in which a control unit of an air conditioning system is an execution subject.

As shown in fig. 12, the method for controlling an air conditioning system includes:

and S120, starting.

S121, the control part judges whether the refrigerant leaks.

And S122, in the case of refrigerant leakage, the control part controls the air conditioning system to recover the refrigerant into the compressor and the outdoor heat exchanger.

And S123, the control part controls the blocking part to open the outdoor air outlet and block the indoor air inlet, and controls the fan motor to rotate reversely to drive the fan to supply air reversely.

By adopting the method provided by the embodiment of the disclosure, the leakage condition of the refrigerant can be automatically judged, and when the leakage condition of the refrigerant is detected, the fan is controlled to reversely supply air, and meanwhile, the outdoor air outlet is opened, so that the leaked refrigerant is blown out from the outdoor air outlet. Therefore, the leaked refrigerant can be discharged out of the air conditioning system in time, and the safety guarantee is facilitated.

In addition, the refrigerant is timely recovered to the compressor and the outdoor heat exchanger, so that the refrigerant can be prevented from further leakage, and the safety is guaranteed. Meanwhile, the workload of discharging the refrigerant is reduced, and the processing time is shortened.

Optionally, in case of refrigerant leakage, the method further comprises: the control part controls the compressor and the fan motor to stop running. Therefore, the continuous leakage of the refrigerant can be avoided, and safety risks are brought.

Alternatively, the control part controls the air conditioning system to recover the refrigerant into the compressor and the outdoor heat exchanger, including: the control part controls the air conditioner to operate and refrigerate, controls the compressor to keep operating state, controls the throttling device on the second pipeline to be closed, and controls the compressor to drive the refrigerant in the indoor unit to flow to the compressor and the outdoor heat exchanger through the first pipeline; and controlling the compressor to stop running. In this way, the refrigerant can be recycled to the compressor and the outdoor heat exchanger, and the phenomenon that the refrigerant continuously leaks to increase unnecessary workload and even cause danger is avoided.

Wherein, the control part controls the compressor to keep the running state to include: the control unit detects an operation state of the compressor. And if the compressor is in the running state, controlling the compressor to continuously keep the running state. And if the compressor is in a stop state, starting the compressor.

Alternatively, the control part controls the refrigerant in the compressor driving indoor unit to flow to the compressor and the outdoor heat exchanger through the first pipe, and comprises: the control part controls the compressor to drive the refrigerant in the indoor unit to flow to the compressor and the outdoor heat exchanger through the first pipeline for a first preset time. Further, the value range of the first preset time is 30s to 1 min. Thus, the refrigerant can be ensured to achieve a better recovery effect.

Fig. 13 is a schematic diagram of a method for controlling an air conditioning system according to an embodiment of the present disclosure. The method for controlling the air conditioning system can be performed in the air conditioning system and also in a server communicating with the air conditioning system. In the embodiment of the present disclosure, a description is made of a scheme in which a control unit of an air conditioning system is an execution subject.

As shown in fig. 13, the method for controlling an air conditioning system includes:

s130, starting.

S131, the control part judges whether the refrigerant leaks.

And S132, in the case of refrigerant leakage, the control part controls the air conditioning system to recover the refrigerant into the compressor and the outdoor heat exchanger.

And S133, the control part controls the blocking part to open the outdoor air outlet and block the indoor air inlet, and controls the fan motor to rotate reversely to drive the fan to supply air reversely.

S134, the control unit obtains the refrigerant concentration in the indoor unit.

And S135, when the concentration of the refrigerant is smaller than the concentration threshold value and the recovery of the refrigerant is finished, the control part controls the fan motor to stop the reverse rotation.

By adopting the method provided by the embodiment of the disclosure, the leakage condition of the refrigerant can be automatically judged, and when the leakage condition of the refrigerant is detected, the fan is controlled to reversely supply air, and meanwhile, the outdoor air outlet is opened, so that the leaked refrigerant is blown out from the outdoor air outlet. Therefore, leaked refrigerant can be discharged out of the air conditioning system in time, and safety guarantee is facilitated. In addition, the process of motor reverse rotation can be automatically stopped according to the actual processing condition, and the user operation is simplified.

Optionally, the determining of the concentration threshold includes: the control unit obtains the refrigerant type and determines the concentration threshold value according to the refrigerant type.

Alternatively, the control portion determining the concentration threshold value according to the refrigerant type includes: if the refrigerant is flammable refrigerant, the concentration threshold is 5% of the lower burning limit concentration of the flammable refrigerant. If the refrigerant is a toxic refrigerant, the concentration threshold is 5% of the lower acceptable concentration for human body. In this way, the concentration threshold can be determined according to the type of refrigerant in the actual scene, so that the inversion is stopped at an appropriate time.

Optionally, the control unit determining the concentration threshold value according to the refrigerant type further includes: in the case where the refrigerant is a normal refrigerant, the concentration threshold is 10% of the concentration that is harmful to the human body.

Alternatively, the control part controls the fan motor to stop reverse rotation, including: the control part controls the fan motor to stop reverse rotation after a second preset time. Wherein, the second preset time may be 1 min. In this way, refrigerant recovery can be made more thorough.

As shown in fig. 14, an embodiment of the present disclosure provides an apparatus for controlling an air conditioning system, which includes a processor (processor)140 and a memory (memory) 141. Optionally, the apparatus may also include a Communication Interface (Communication Interface)142 and a bus 143. The processor 140, the communication interface 142, and the memory 141 may communicate with each other via a bus 143. Communication interface 142 may be used for information transfer. The processor 140 may call logic instructions in the memory 141 to perform the method for controlling the air conditioning system of the above-described embodiment.

In addition, the logic instructions in the memory 141 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.

The memory 141 is a storage medium and can be used for storing software programs, computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 140 executes functional applications and data processing by executing program instructions/modules stored in the memory 141, that is, implements the method for controlling the air conditioning system in the above-described embodiment.

The memory 141 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 141 may include a high-speed random access memory, and may also include a nonvolatile memory.

Embodiments of the present disclosure provide a storage medium storing computer-executable instructions configured to perform the above-described method for controlling an air conditioning system.

The storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.

The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.

Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims

1. An indoor unit, comprising:

the outdoor air conditioner comprises a shell (10) which is a hollow rectangular body, wherein part of the shell is arranged indoors, an indoor part (111) is provided with an indoor air inlet (101) and an indoor air outlet (102), an outdoor part (113) is provided with an outdoor air outlet (103), and the outdoor air outlet (103) is communicated with the outdoors and indoors;

the fan (11) is arranged in the shell (10), blades are made of flexible materials, and the blades are turned over when rotating reversely to realize reverse air supply;

the fan motor (12) is arranged in the shell (10), is electrically connected with the fan (11), and is controlled to rotate forwards or backwards to drive the fan (11) to rotate forwards or backwards;

the blocking part (13) is used for controllably blocking the indoor air inlet (101) or the outdoor air outlet (103);

and the control part (15) responds to a refrigerant leakage instruction, controls the blocking part (13) to block the outdoor air outlet (103), and controls the fan motor (12) to rotate reversely.

2. Indoor unit according to claim 1, characterized in that the blocking part (13) comprises:

a baffle (131) attached to the housing (10) and sized to completely cover the indoor air intake (101) or the outdoor air outlet (103);

and the traction device (132) is controlled to pull the baffle (131) to move so as to block the indoor air inlet (101) or the outdoor air outlet (103).

3. The method according to claim 2, wherein the blocking portion (13) further comprises:

a fixing device (133) arranged on the housing (10) and/or the baffle (131) and configured to make the baffle (131) tightly attached to the housing (10).

4. An air conditioning system comprising a compressor (21) and an outdoor heat exchanger (22) connected to the compressor (21), characterized by further comprising:

indoor unit according to any one of claims 1 to 3, connected to the compressor (21) by a first duct (121) and to the outdoor heat exchanger (22) by a second duct (122);

wherein the second conduit (122) is provided with a throttle device (23), which throttle device (23) is controlled to open or close.

5. A method for controlling an air conditioning system, applied to the air conditioning system according to claim 4, characterized by comprising:

judging whether the refrigerant leaks or not;

under the condition that the refrigerant is not leaked, the blocking part is controlled to block the outdoor air outlet and open the indoor air inlet;

and under the condition of refrigerant leakage, the blocking part is controlled to open the outdoor air outlet and block the indoor air inlet, and the fan motor is controlled to rotate reversely to drive the fan to supply air reversely.

6. The method of claim 5, wherein before controlling the blocking portion to open the outdoor air outlet, block the indoor air inlet, and control the fan motor to rotate reversely to drive the fan to supply air reversely, the method further comprises:

and controlling the compressor to stop running.

7. The method of claim 5, wherein before controlling the blocking portion to open the outdoor air outlet, block the indoor air inlet, and control the fan motor to rotate reversely to drive the fan to supply air reversely, the method further comprises:

and controlling the air conditioning system to recover the refrigerant into the compressor and the outdoor heat exchanger.

8. The method of claim 7, wherein controlling the air conditioning system to recover refrigerant to the compressor and the heat exchanger comprises:

controlling the air conditioner to operate under a refrigeration working condition, and controlling the compressor to keep an operating state;

controlling a throttling device on the second pipeline to be closed, and controlling a compressor to drive refrigerant in an indoor unit to flow to the compressor and the outdoor heat exchanger through a first pipeline;

and controlling the compressor to stop running.

9. The method according to claim 7 or 8, wherein after controlling the blocking portion to open the outdoor air outlet, block the indoor air inlet, and control the fan motor to rotate reversely, the method further comprises:

obtaining the concentration of the refrigerant in the indoor unit;

and controlling the motor to stop reversing when the concentration of the refrigerant is less than a concentration threshold value and the recovery of the refrigerant is finished.

10. An apparatus for controlling an air conditioning system, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to perform the method for controlling an air conditioning system according to any one of claims 5 to 9 when executing the program instructions.