Air conditioner

Abstract

The utility model provides an air conditioner. The air conditioner comprises an indoor unit, an outdoor unit and a recovery assembly, the recovery assembly comprises a detection module, a control module (7) and an execution module, and the detection module is used for obtaining air conditioner operation data and refrigerant detection data of indoor space; the execution module is used for controlling on-off of an air conditioner pipeline and recycling refrigerants in the indoor unit to the outdoor unit, and the control module (7) is in communication connection with the detection module and the execution module. According to the air conditioner, the refrigerant is recycled into the outdoor heat exchanger to be stored through the structure of the air conditioner, the structure of an automatic refrigerant recycling device is simplified, and therefore the design difficulty, the installation cost and the maintenance cost of the automatic refrigerant recycling device are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning refrigeration technical field, specifically, relate to a kind of air conditioner. BACKGROUND

[0002] Air conditioner is indispensable equipment in modern life, is widely used in residential, commercial, industrial and other fields, for adjusting indoor temperature, humidity and air quality, improve people's comfort and work efficiency have important significance, wherein refrigerant is one of the core of air conditioning system, refrigerant is responsible for absorbing indoor heat and removes it to outdoor, so as to realize indoor cooling, to the normal operation and energy efficiency of air conditioner is crucial, however, with the growth of air conditioning equipment use time, refrigerant delivery pipeline can be aged, so there is refrigerant leakage security risk.If air conditioner refrigerant leaks, it can release toxic gas, has potential harm to respiratory system, nervous system etc., serious time can even endanger life, in addition, certain refrigerant is flammable, after indoor leakage reaches certain concentration, it is easy to cause fire and explosion etc.accident, so timely reducing indoor refrigerant leakage is particularly important.

[0003] At present, leakage detection device is generally used to detect air conditioner refrigerant leakage, once refrigerant leakage is detected, alarm is sent, manual processing leakage is reminded, refrigerant cannot be automatically recycled;There is also a scheme that independent refrigerant recovery system is set to recover leaked refrigerant, after sensor detects refrigerant leakage, independent refrigerant recovery system is started to recover refrigerant into external storage tank, the independent refrigerant recovery system is generally more complex, and the design, installation and maintenance cost is higher. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a kind of air conditioner, refrigerant is recycled to outdoor heat exchanger for storage using the structure of air conditioner itself, simplify refrigerant automatic recovery device structure, thereby reduce the design difficulty, installation cost and maintenance cost of refrigerant automatic recovery device.

[0005] In order to achieve the above purpose, according to one aspect of the utility model, an air conditioner is provided, comprising indoor unit, outdoor unit and recovery assembly, recovery assembly comprises detection module, control module and execution module, detection module is used to obtain air conditioner operation data and indoor space refrigerant detection data, execution module is used to control the on-off of air conditioner pipeline and make refrigerant in indoor unit recycle to outdoor unit, control module is connected with detection module and execution module in communication.

[0006] Further, the indoor unit comprises an indoor heat exchanger, the outdoor unit comprises a compressor, an outdoor heat exchanger and a throttling device, the indoor heat exchanger, the compressor, the outdoor heat exchanger and the throttling device are communicated to form a loop through a connecting pipe, the detection module comprises a leakage sensor, the leakage sensor is arranged outside the indoor heat exchanger, the leakage sensor is in communication connection with the control module, the connecting pipe comprises a first connecting pipe and a second connecting pipe, the first connecting pipe communicates the outdoor heat exchanger with the throttling device, the second connecting pipe communicates the compressor with the outdoor heat exchanger, the execution module comprises a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve is arranged on the first connecting pipe, the second electromagnetic valve is arranged on the second connecting pipe, and the first electromagnetic valve and the second electromagnetic valve are in communication connection with the control module.

[0007] Further, the first electromagnetic valve is arranged at a position close to a refrigerant outlet of the outdoor heat exchanger, and the second electromagnetic valve is arranged at a position close to a refrigerant inlet of the outdoor heat exchanger.

[0008] Further, the detection module further comprises a first pressure sensor, the connecting pipe comprises a third connecting pipe, the third connecting pipe communicates the indoor heat exchanger with the compressor, the first pressure sensor is arranged on the third connecting pipe, and the first pressure sensor is in communication connection with the control module.

[0009] Further, the leakage sensor comprises a flammable refrigerant special electrochemical sensor.

[0010] Further, the air conditioner further comprises an overpressure protection device, the overpressure protection device comprises a pressure relief valve, the detection module further comprises a first pressure sensor, the pressure relief valve is arranged on the outdoor unit, and the overpressure protection device is in communication connection with the first pressure sensor, the first electromagnetic valve and the second electromagnetic valve through the control module.

[0011] Further, the overpressure protection device further comprises an alarm system, the alarm system comprises an audible and visual alarm, and the audible and visual alarm is arranged in an indoor space and / or an outdoor space where the air conditioner is located.

[0012] Further, the control module further comprises a wireless communication assembly, and the control module is in communication connection with a remote monitoring terminal through the wireless communication assembly.

[0013] Further, the throttling device is an electronic expansion valve or a capillary tube.

[0014] Further, the indoor unit further comprises a machine shell, the indoor heat exchanger is arranged in the machine shell, and the leakage sensor is arranged on the machine shell.

[0015] The technical scheme of the air conditioner provided by the present application comprises the following steps: the recovery assembly comprises a detection module, a control module and an execution module; the detection module is used to acquire air conditioner operation data and refrigerant detection data of an indoor space; whether refrigerant leakage occurs in the indoor space where the indoor unit is located is determined according to the refrigerant detection data; when it is determined that refrigerant leakage occurs, the control module sends a signal to control the execution module to start a refrigerant recovery program; and the execution module is used to control the on-off of the air conditioner pipeline and to recover the refrigerant in the indoor unit to the outdoor unit, so that automatic refrigerant recovery is realized.

[0016] Compared with the existing independent refrigerant recovery system, the air conditioner provided by the present application recovers the refrigerant to the outdoor heat exchanger for storage by setting the recovery assembly and the corresponding refrigerant recovery program, simplifies the structure of the automatic refrigerant recovery device, and thus reduces the design difficulty, installation cost and maintenance cost of the automatic refrigerant recovery device. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application and do not constitute an improper limitation on the present application.

[0018] Figure 1 A device overall structure diagram of the air conditioner of the embodiment of the present application is shown; and

[0019] Figure 2 A refrigerant automatic recovery method flow chart of the air conditioner of the embodiment of the present application is shown.

[0020] Among them, the above drawings include the following reference signs:

[0021] 1, indoor heat exchanger; 2, compressor; 3, outdoor heat exchanger; 4, throttling device; 5, leakage sensor; 6, first pressure sensor; 7, control module; 8, first electromagnetic valve; 9, second electromagnetic valve; 10, first connecting pipe; 11, second connecting pipe; 12, third connecting pipe; 13, second pressure sensor; 14, four-way reversing valve. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] In combination with Figure 1 and Figure 2The utility model provides a kind of air conditioner, including indoor unit, outdoor unit and recovery component, recovery component includes detection module, control module 7 and execution module, detection module is used to obtain air conditioner operating data and the refrigerant detection data of indoor space, execution module is used to control the on-off of air conditioner pipeline and make the refrigerant in indoor unit recycle to outdoor unit, control module 7 is connected with detection module and execution module communication.

[0024] In the above technical solution, the recovery component includes a detection module, a control module 7, and an execution module. The detection module is used to obtain air conditioner operating data and refrigerant detection data of indoor space. According to the refrigerant detection data, it is determined whether refrigerant leakage occurs in the indoor space where the indoor unit is located. When it is determined that refrigerant leakage occurs, the control module 7 sends a signal to control the execution module to start the refrigerant recovery program. The execution module is used to control the on-off of air conditioner pipeline and make the refrigerant in indoor unit recycle to outdoor unit, thereby realizing automatic recovery of refrigerant. Compared with the existing independent refrigerant recovery system, the air conditioner provided by the utility model recovers refrigerant to the outdoor heat exchanger for storage by setting the recovery component and the corresponding refrigerant recovery program, simplifies the structure of the automatic refrigerant recovery device, and reduces the design difficulty, installation cost and maintenance cost of the automatic refrigerant recovery device.

[0025] In one embodiment of the utility model, the indoor unit includes an indoor heat exchanger 1, the outdoor unit includes a compressor 2, an outdoor heat exchanger 3 and a throttling device 4, the indoor heat exchanger 1, the compressor 2, the outdoor heat exchanger 3 and the throttling device 4 are connected by a connecting pipe to form a loop, the detection module includes a leakage sensor 5, the leakage sensor 5 is arranged outside the indoor heat exchanger 1, the leakage sensor 5 is connected with the control module 7, the connecting pipe includes a first connecting pipe 10 and a second connecting pipe 11, the first connecting pipe 10 connects the outdoor heat exchanger 3 and the throttling device 4, the second connecting pipe 11 connects the compressor 2 and the outdoor heat exchanger 3, a four-way valve 14 is further arranged on the second connecting pipe 11, the execution module includes a first electromagnetic valve 8 and a second electromagnetic valve 9, the first electromagnetic valve 8 is arranged on the first connecting pipe 10, the second electromagnetic valve 9 is arranged on the second connecting pipe 11, and the first electromagnetic valve 8 and the second electromagnetic valve 9 are connected with the control module 7.

[0026] In the above technical solution, the air conditioner is composed of an indoor unit and an outdoor unit, the indoor unit comprises an indoor heat exchanger 1, and the outdoor unit comprises a compressor 2, an outdoor heat exchanger 3 and a throttling device 4, the above key components are connected with each other through a pipeline system to form a complete refrigeration cycle; a leakage sensor 5 is arranged outside the indoor heat exchanger 1 and is used for monitoring whether refrigerant leakage occurs in an indoor space in real time; a first electromagnetic valve 8 and a second electromagnetic valve 9 are respectively arranged on a first connecting pipe 10 between the outdoor heat exchanger 3 and the throttling device 4 and a second connecting pipe 11 between the compressor 2 and the outdoor heat exchanger 3, a four-way reversing valve 14 is further arranged on the second connecting pipe 11, the flow direction of the refrigerant is changed through the four-way reversing valve 14, and the function conversion of the air conditioner between refrigeration and heating is realized; the first electromagnetic valve 8 and the second electromagnetic valve 9 are in communication with a control module 7, so as to accurately control the on-off of the pipeline and the flow of the refrigerant when needed; when refrigerant recovery is started, the first electromagnetic valve 8 is turned off, so that the refrigerant cannot continue to flow from the outdoor heat exchanger 3 to the indoor heat exchanger 1, the refrigerant is recovered into the outdoor heat exchanger 3 through the compressor 2, and finally the second electromagnetic valve 9 is turned off, so that the refrigerant that has been recovered into the outdoor heat exchanger 3 cannot flow back to the indoor heat exchanger 1 through the second connecting pipe 11, and thus the automatic refrigerant recovery is completed.

[0027] In one embodiment of the utility model, the first electromagnetic valve 8 is arranged at a position close to the refrigerant outlet of the outdoor heat exchanger 3, and the second electromagnetic valve 9 is arranged at a position close to the refrigerant inlet of the outdoor heat exchanger 3.

[0028] In the above technical solution, the first electromagnetic valve 8 and the second electromagnetic valve 9 are arranged at positions close to the refrigerant of the outdoor heat exchanger 3, so that the amount of refrigerant remaining in the connecting pipe after the completion of recovery of the electromagnetic valve can be reduced as much as possible, and the refrigerant recovery effect is improved.

[0029] In one embodiment of the utility model, the detection module further comprises a first pressure sensor 6, the connecting pipe comprises a third connecting pipe 12, the third connecting pipe 12 communicates the indoor heat exchanger 1 with the compressor 2, the first pressure sensor 6 is arranged on the third connecting pipe 12, and the first pressure sensor 6 is in communication connection with the control module 7.

[0030] In the technical scheme, the first pressure sensor 6 is arranged on the third connecting pipe 12, is used for monitoring the pipeline pressure on the side of the compressor 2 close to the indoor heat exchanger 1, ensures that the first pressure sensor 6 can accurately monitor the pressure change of the refrigerant in the third connecting pipe 12 in the recovery process, and the first pressure sensor 6 can feed back the information to the control module in time through the communication connection with the control module, so that the system can judge the progress and completion state of the refrigerant recovery according to the pressure change, thereby enhancing the accuracy of the refrigerant recovery; through the pressure data collected by the first pressure sensor 6, in combination with the threshold value of the pressure change set in the control module, when the pressure value detected by the first pressure sensor is lower than the threshold value, it is judged that the refrigerant recovery is completed, and the control module closes the corresponding electromagnetic valve to stop the recovery operation.

[0031] In an embodiment of the utility model, the detection module further includes a first pressure sensor 6, the connecting pipe includes a third connecting pipe 12, the third connecting pipe 12 is communicated between the indoor heat exchanger 1 and the compressor 2, the first pressure sensor 6 is arranged on the third connecting pipe 12, and the first pressure sensor 6 is in communication connection with the control module 7.

[0032] In the technical scheme, the first pressure sensor 6 is arranged on the third connecting pipe 12, is used for monitoring the pipeline pressure on the side of the compressor 2 close to the indoor heat exchanger 1, ensures that the first pressure sensor 6 can accurately monitor the pressure change of the refrigerant in the third connecting pipe 12 in the recovery process, and the first pressure sensor 6 can feed back the information to the control module in time through the communication connection with the control module, so that the system can judge the progress and completion state of the refrigerant recovery according to the pressure change, thereby enhancing the accuracy of the refrigerant recovery; through the pressure data collected by the first pressure sensor 6, in combination with the threshold value of the pressure change set in the control module, when the pressure value detected by the first pressure sensor is lower than the threshold value, it is judged that the refrigerant recovery is completed, and the control module closes the corresponding electromagnetic valve to stop the recovery operation.

[0033] In an embodiment of the utility model, the throttling device is an electronic expansion valve or a capillary tube.

[0034] In the technical scheme, the throttling device is an important component in the air conditioner, and the throttling device is used for controlling the flow of the refrigerant, thereby adjusting the refrigeration or heating effect; the electronic expansion valve adjusts the flow of the refrigerant through electronic control, the electronic expansion valve can realize accurate flow control, thereby improving the energy efficiency of the air conditioner and reducing the energy consumption; the capillary tube has a small inner diameter, so that the refrigerant generates a large resistance when flowing through the capillary tube, thereby realizing throttling, and the capillary tube has the characteristics of simple structure, no external power supply, low manufacturing cost and stable throttling effect.

[0035] In an embodiment of the utility model, the indoor unit further includes a shell, and the indoor heat exchanger 1 is arranged in the shell, and the leakage sensor 5 is arranged on the shell.

[0036] In the above technical solution, the leakage sensor 5 is arranged on the shell, which can ensure that the leakage sensor 5 is closer to the indoor heat exchanger 1, and improve the sensitivity and accuracy of detecting refrigerant leakage. Because the indoor heat exchanger 1 is arranged in the shell, the refrigerant will first accumulate in the closed space after leakage, and the leakage sensor 5 can detect the leakage more quickly, so that the recovery program can be started in time, and the safety of the air conditioner is improved.

[0037] With reference to Figure 1 and Figure 2 The utility model discloses still provide a kind of refrigerant automatic recovery method of air conditioner, comprising:

[0038] Obtain refrigerant detection data of indoor space;

[0039] According to refrigerant detection data, whether control air conditioner starts refrigerant recovery is judged;

[0040] If refrigerant detection data does not reach the threshold condition of starting refrigerant recovery, return the step of obtaining refrigerant detection data of indoor space;

[0041] If reaching the threshold condition of starting refrigerant recovery, whether air conditioner is in refrigeration working mode is judged;

[0042] If air conditioner is not in refrigeration working mode, control air conditioner switches to refrigeration working mode;

[0043] If air conditioner is in refrigeration working mode, control air conditioner recovers refrigerant from indoor unit to outdoor unit;

[0044] When refrigerant completes recovery, control air conditioner stops refrigerant recovery.

[0045] In the above technical solution, when the refrigerant recovery program starts running, the refrigerant detection data of the indoor space is obtained by the detection module, and if it is judged according to the refrigerant detection data that there is refrigerant leakage in the indoor space, the control module 7 will execute the refrigerant recovery program. Before starting recovery, the system will check whether the air conditioner is currently in the refrigeration mode, if the air conditioner is not in the refrigeration mode, the control module 7 will switch it to the refrigeration mode first, and the refrigerant in the pipeline continues to flow through the refrigeration mode of the air conditioner itself, then the control module 7 will command the first electromagnetic valve 8 to shut off, isolate the throttling device 4, block the path of the refrigerant from the outdoor heat exchanger 3 to the indoor heat exchanger 1, and then start the compressor 2 to run in the refrigeration mode, so as to drive the refrigerant in the indoor unit to flow to the outdoor heat exchanger 3 of the outdoor unit through the second connecting pipe 11 for recovery. By using the structure and refrigeration function of the air conditioner itself, the refrigerant recovery can be realized, the recovery system is greatly simplified, and the complexity, design difficulty and installation difficulty of the refrigerant recovery are reduced, so that the refrigerant recovery cost is reduced.

[0046] In an embodiment of the present application, the step of judging whether to control the air conditioner to start refrigerant recovery according to the refrigerant detection data comprises:

[0047] According to the refrigerant detection data, it is judged that the indoor space contains refrigerant, or according to the refrigerant detection data, it is obtained that the refrigerant concentration data is greater than or equal to the concentration threshold value;

[0048] The air conditioner is controlled to start refrigerant recovery.

[0049] In the above technical solution, if only refrigerant is detected in the indoor space, or the detected refrigerant concentration exceeds the preset concentration threshold value, the control module 7 will control the air conditioner to execute the refrigerant recovery program to recover the refrigerant.

[0050] In an embodiment of the present application, the step of controlling the air conditioner to recover the refrigerant from the indoor unit to the outdoor unit comprises:

[0051] The first electromagnetic valve 8 is controlled to shut off;

[0052] The compressor 2 is controlled to run in the refrigeration mode, so that the refrigerant flows from the indoor heat exchanger 1 in the indoor unit to the outdoor heat exchanger 3 in the outdoor unit.

[0053] In the above technical solution, when the detection module detects indoor refrigerant leakage, the control module 7 will immediately control the first electromagnetic valve 8 to be closed, thereby limiting the refrigerant to stay in the outdoor heat exchanger 3 for storage, avoiding the refrigerant flowing from the outdoor heat exchanger 3 to the indoor heat exchanger 1, preventing the indoor refrigerant from continuing to leak, and then controlling the compressor 2 to operate in refrigeration mode to drive the refrigerant to flow to the outdoor heat exchanger 3, so that the refrigerant can be recovered to the outdoor heat exchanger 3, thereby realizing the recovery of the refrigerant from the indoor unit to the outdoor unit.

[0054] In an embodiment of the present application, the step of controlling the air conditioner to stop refrigerant recovery when the refrigerant recovery is completed comprises:

[0055] The pressure data is obtained through the first pressure sensor 6;

[0056] The pressure data is compared with the pressure threshold value to determine whether to control the air conditioner to stop refrigerant recovery;

[0057] If the pressure data is lower than the pressure threshold value, the air conditioner is controlled to stop refrigerant recovery;

[0058] If the pressure data is higher than or equal to the pressure threshold value, the air conditioner is not controlled to stop refrigerant recovery, and the step of obtaining the pressure data through the first pressure sensor 6 is returned to determine whether to control the air conditioner to stop refrigerant recovery again.

[0059] In the above technical solution, after the refrigerant recovery starts, the control module 7 will continuously monitor the suction pressure data through the first pressure sensor 6. If the suction pressure is lower than the preset pressure threshold value, it indicates that most of the refrigerant in the indoor heat exchanger 1 has been recovered, at this time the control module 7 will close the second electromagnetic valve 9 and stop the operation of the compressor 2, ending the refrigerant recovery process. The preset pressure threshold value can be set to be lower than the normal operating suction pressure to ensure complete recovery of the refrigerant.

[0060] In an embodiment of the present application, the step of controlling the air conditioner to stop refrigerant recovery when the refrigerant recovery is completed comprises:

[0061] The recovery time data is obtained;

[0062] The recovery time data is compared with the recovery time threshold value to determine whether to control the air conditioner to stop refrigerant recovery;

[0063] If the recovery time data exceeds the recovery time threshold value, the air conditioner is controlled to stop refrigerant recovery;

[0064] If the recovery time data is less than or equal to the recovery time threshold value, the air conditioner is not controlled to stop refrigerant recovery, and the step of obtaining the recovery time data is returned to determine whether to control the air conditioner to stop refrigerant recovery again.

[0065] In the above technical solution, during the refrigerant recovery process, the recovery time data can be recorded by the control module 7 or the timing device, and the refrigerant recovery is stopped when the refrigerant recovery time exceeds the predetermined recovery time threshold, so that the energy waste and equipment wear caused by overrunning can be avoided while ensuring the recovery effect, and the energy efficiency and service life of the air conditioner are improved.

[0066] In an embodiment of the present application, the step of controlling the air conditioner to stop the refrigerant recovery when the refrigerant recovery is completed comprises:

[0067] acquiring pressure data and recovery time data;

[0068] comparing the pressure data with the pressure threshold to determine whether to stop the refrigerant recovery;

[0069] if the pressure data is less than the pressure threshold, the air conditioner is controlled to stop the refrigerant recovery;

[0070] if the pressure data is greater than or equal to the pressure threshold, the air conditioner is not controlled to stop the refrigerant recovery, and the recovery time data is compared with the recovery time threshold to determine whether to control the air conditioner to stop the refrigerant recovery;

[0071] if the recovery time data is greater than the recovery time threshold, the air conditioner is controlled to stop the refrigerant recovery;

[0072] if the recovery time data is less than or equal to the recovery time threshold, the air conditioner is not controlled to stop the refrigerant recovery, and the step of acquiring the pressure data and the recovery time data is returned to determine again whether to control the air conditioner to stop the refrigerant recovery.

[0073] In the above technical solution, if the recovery time exceeds the predetermined recovery time threshold, the control module 7 will stop the refrigerant recovery even if the pressure data has not reached the shutdown condition, and the second electromagnetic valve 9 and the compressor 2 are turned off to prevent unnecessary energy consumption and system overload. At the same time, using the pressure data and the recovery time data as the judgment standard for controlling the air conditioner to stop the refrigerant recovery can effectively prevent misjudgment caused by abnormal single parameter, thereby improving the stability and reliability of the automatic refrigerant recovery.

[0074] In an embodiment of the present application, the step of controlling the air conditioner to stop the refrigerant recovery when the refrigerant recovery is completed comprises:

[0075] acquiring refrigerant concentration data;

[0076] when the concentration data is lower than the concentration threshold, the second electromagnetic valve 9 is closed;

[0077] the compressor 2 is controlled to stop.

[0078] In the above technical solution, when the refrigerant recovery starts, the control module 7 will continue to monitor the refrigerant concentration data through the leakage sensor 5, and if the concentration data is lower than the preset concentration threshold, it indicates that the refrigerant in the indoor heat exchanger 1 has been mostly recovered, and the indoor space has become a safe environment, at this time the control module 7 will turn off the second electromagnetic valve 9 and stop the operation of the compressor 2, and end the refrigerant recovery process.

[0079] In an embodiment of the present application, after the concentration data reaches the concentration threshold, before the second electromagnetic valve 9 is closed, the automatic refrigerant recovery method further comprises: continuing to control the air conditioner to recover the refrigerant from the indoor heat exchanger 1 to the outdoor heat exchanger 3 and continuing for a preset time.

[0080] In the above technical solution, after the concentration data reaches the preset concentration threshold, the air conditioner is controlled to continue operating for a period of time, and then the second electromagnetic valve 9 is closed and the compressor 2 is stopped, thereby completing the refrigerant recovery. By controlling the air conditioner to end with a preset time delay, it is ensured that even when the concentration is detected to meet the standard, the last remaining refrigerant can be collected as much as possible by continuing to operate, thereby improving the recovery efficiency and the integrity of the recovery.

[0081] In an embodiment of the present application, the leakage sensor 5 comprises an A2L refrigerant gas detection sensor.

[0082] In the above technical solution, the A2L refrigerant gas detection sensor detects and identifies the A2L refrigerant with flammability, has higher accuracy, can improve the detection sensitivity of the A2L refrigerant leaked in the indoor space, and further improves the safety of the air conditioner using the A2L refrigerant.

[0083] In an embodiment of the present application, the air conditioner further comprises an overpressure protection device, the overpressure protection device comprises a pressure relief valve, the pressure relief valve is arranged on the outdoor unit, the detection module further comprises a second pressure sensor 13, the second pressure sensor 13 is arranged on the first connecting pipe 10 and / or the second connecting pipe 11, and the overpressure protection device is in communication connection with the second pressure sensor 13, the first electromagnetic valve 8 and the second electromagnetic valve 9 through the control module 7.

[0084] In the above technical solution, the second pressure sensor 13 monitors the pressure of the refrigerant in the pipeline, and when it is found that the pipeline pressure is too high, the air conditioner is stopped and the electromagnetic valve is closed through the control module 7, so as to preliminarily control the pressure in the air conditioner. If the above protection mechanism fails and the pipeline pressure continues to rise, the pressure relief valve is controlled to release the pressure in the pipeline to the outdoor space through the control module 7, or the pressure relief valve is actively opened to release the pressure in the pipeline to the outdoor space through the overpressure protection device, thereby improving the safety of the air conditioner operation.

[0085] In an embodiment of the utility model, the overvoltage protection device further comprises an alarm system, the alarm system comprises an audible and visual alarm, and the audible and visual alarm is arranged in an indoor space and / or an outdoor space where the air conditioner is located.

[0086] In the above technical solution, when the control module 7 controls the pressure relief valve to release the pipe pressure to the outdoor space or actively opens the pressure relief valve to release the pipe pressure to the outdoor space, the alarm system sends an alarm to the indoor and outdoor spaces through the audible and visual alarm, reminding the indoor and outdoor crowds to pay attention to safety, avoiding the rupture of the high-pressure pipeline of the air conditioner or the harm of the release of the combustible refrigerant to the outdoor space by the pressure relief valve to the surrounding crowds.

[0087] In an embodiment of the utility model, the control module further comprises a wireless communication assembly, and the control module is in communication connection with a remote monitoring terminal through the wireless communication assembly.

[0088] In the above technical solution, the user can control and monitor the current working and refrigerant recovery state of the air conditioner through a remote user terminal such as a mobile phone or a computer through the wireless communication assembly, and the remote operation and maintenance personnel can also realize the timely response and control of the refrigerant leakage alarm or the pipeline overpressure alarm.

[0089] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: the recovery assembly includes a detection module, a control module 7 and an execution module, wherein the detection module is used for obtaining air conditioner operation data and indoor space refrigerant detection data, and judging whether refrigerant leakage occurs in the indoor space where the indoor unit is located according to the refrigerant detection data; when it is judged that refrigerant leakage occurs, the control module 7 sends a signal to control the execution module to start the refrigerant recovery program; the execution module is used for controlling the on-off of the air conditioner pipeline and recovering the refrigerant in the indoor unit to the outdoor unit, so as to realize automatic recovery of the refrigerant; when the refrigerant recovery program starts to run, the detection module obtains the refrigerant detection data of the indoor space; if it is judged according to the refrigerant detection data that there is refrigerant leakage in the indoor space, the control module 7 will execute the refrigerant recovery program. Before starting the recovery, the system will check whether the air conditioner is currently in the refrigeration mode; if the air conditioner is not in the refrigeration mode, the control module 7 will switch it to the refrigeration mode first; the refrigerant in the pipeline continues to flow through the refrigeration mode of the air conditioner itself; next, the control module 7 will command the first electromagnetic valve 8 to shut off, isolate the throttling device 4, block the passage of the refrigerant from the outdoor heat exchanger 3 to the indoor heat exchanger 1, and then start the compressor 2 to perform refrigeration operation, so as to drive the refrigerant in the indoor unit to flow to the outdoor heat exchanger 3 of the outdoor unit through the second connecting pipe 11 for recovery. Compared with the existing independent refrigerant recovery system, the air conditioner provided by the utility model recovers the refrigerant into the outdoor heat exchanger for storage by setting the recovery assembly and the corresponding refrigerant recovery program, simplifies the structure of the automatic refrigerant recovery device, and thus reduces the design difficulty, installation cost and maintenance cost of the automatic refrigerant recovery device.

[0090] Obviously, the above-described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the utility model.

[0091] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0092] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air conditioner characterized by comprising: The air conditioner comprises an indoor unit, an outdoor unit and a recovery assembly, the recovery assembly comprises a detection module, a control module (7) and an execution module, the detection module is used for obtaining air conditioner operation data and indoor space refrigerant detection data, the execution module is used for controlling the on-off of the air conditioner pipeline and recovering refrigerant in the indoor unit to the outdoor unit, and the control module (7) is in communication connection with the detection module and the execution module; The indoor unit comprises an indoor heat exchanger (1), the outdoor unit comprises a compressor (2), an outdoor heat exchanger (3) and a throttling device (4), the indoor heat exchanger (1), the compressor (2), the outdoor heat exchanger (3) and the throttling device (4) are communicated through a connecting pipe to form a loop, the detection module comprises a leakage sensor (5), the leakage sensor (5) is arranged outside the indoor heat exchanger (1), the leakage sensor (5) is in communication connection with the control module (7), the connecting pipe comprises a first connecting pipe (10) and a second connecting pipe (11), the first connecting pipe (10) communicates the outdoor heat exchanger (3) and the throttling device (4), the second connecting pipe (11) communicates the compressor (2) and the outdoor heat exchanger (3), the execution module comprises a first electromagnetic valve (8) and a second electromagnetic valve (9), the first electromagnetic valve (8) is arranged on the first connecting pipe (10), the second electromagnetic valve (9) is arranged on the second connecting pipe (11), and the first electromagnetic valve (8) and the second electromagnetic valve (9) are in communication connection with the control module (7). The second connecting pipe (11) is further provided with a four-way reversing valve (14), the execution module comprises a first electromagnetic valve (8) and a second electromagnetic valve (9), the first electromagnetic valve (8) is arranged on the first connecting pipe (10), the second electromagnetic valve (9) is arranged on the second connecting pipe (11), and the first electromagnetic valve (8) and the second electromagnetic valve (9) are in communication connection with the control module (7). The first electromagnetic valve (8) is arranged at a position close to a refrigerant outlet of the outdoor heat exchanger (3), and the second electromagnetic valve (9) is arranged at a position close to a refrigerant inlet of the outdoor heat exchanger (3).

2. The air conditioner of claim 1, wherein The detection module further comprises a first pressure sensor (6), the connecting pipe comprises a third connecting pipe (12), the third connecting pipe (12) communicates the indoor heat exchanger (1) and the compressor (2), the first pressure sensor (6) is arranged on the third connecting pipe (12), and the first pressure sensor (6) is in communication connection with the control module (7).

3. The air conditioner of claim 1, wherein The leakage sensor (5) comprises an A2L refrigerant gas detection sensor.

4. The air conditioner of claim 1, wherein The air conditioner further comprises an overpressure protection device, the overpressure protection device comprises a pressure relief valve, the pressure relief valve is arranged on the outdoor unit, the detection module further comprises a second pressure sensor (13), the second pressure sensor (13) is arranged on the first connecting pipe (10) and / or the second connecting pipe (11), and the overpressure protection device is in communication connection with the second pressure sensor (13), the first electromagnetic valve (8) and the second electromagnetic valve (9) through the control module (7).

5. The air conditioner of claim 4, wherein The overpressure protection device further comprises an alarm system, the alarm system comprises an audible and visual alarm, and the audible and visual alarm is arranged in an indoor space and / or an outdoor space where the air conditioner is located.

6. The air conditioner of claim 1, wherein The control module further comprises a wireless communication assembly, and the control module is in communication connection with a remote monitoring terminal through the wireless communication assembly.

7. The air conditioner of claim 1, wherein The throttling device (4) is an electronic expansion valve or a capillary tube.

8. The air conditioner of claim 1, wherein The indoor unit further comprises a shell, the indoor heat exchanger (1) is arranged in the shell, and the leakage sensor (5) is arranged on the shell.

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