CN220828932U - Air conditioner - Google Patents

Abstract

The utility model discloses an air conditioner, comprising: the device comprises a compressor, a reversing valve, an indoor heat exchanger and an outdoor heat exchanger; the first on-off valve is arranged between the exhaust port of the compressor and the first end of the reversing valve, and the second on-off valve is arranged between the fourth end of the reversing valve and the air return port of the compressor; the first high-pressure sensor is arranged between the first on-off valve and the first end of the reversing valve, and/or the second high-pressure sensor is arranged between the first on-off valve and the exhaust port of the compressor. Therefore, refrigerant recovery can be realized by arranging the first on-off valve, the second on-off valve, the first high pressure sensor and/or the second high pressure sensor, and refrigerant waste is reduced.

Description

Air conditioner

Technical Field

The utility model relates to the technical field of air treatment equipment, in particular to an air conditioner.

Background

In the related art, after the refrigerant of the air conditioner leaks, an exhaust system or a fresh air system is mostly adopted to reduce the concentration of the leaked refrigerant, but the refrigerant still continues to leak, so that the refrigerant is wasted.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the utility model aims to provide an air conditioner, which can realize refrigerant recovery and reduce refrigerant waste by arranging a first on-off valve, a second on-off valve, a first high pressure sensor and/or a second high pressure sensor.

To achieve the above object, an embodiment of a first aspect of the present utility model provides an air conditioner, including: the air outlet of the compressor is connected with the first end of the reversing valve, the second end of the reversing valve is connected with the third end of the reversing valve through the indoor heat exchanger and the outdoor heat exchanger in sequence, and the fourth end of the reversing valve is connected with the air return port of the compressor; the first on-off valve is arranged between the exhaust port of the compressor and the first end of the reversing valve, and the second on-off valve is arranged between the fourth end of the reversing valve and the air return port of the compressor; the first high-pressure sensor is arranged between the first on-off valve and the first end of the reversing valve, and/or the second high-pressure sensor is arranged between the first on-off valve and the exhaust port of the compressor.

According to the air conditioner provided by the embodiment of the utility model, the refrigerant recovery can be realized by arranging the first on-off valve, the second on-off valve, the first high pressure sensor and/or the second high pressure sensor, and the refrigerant waste is reduced.

According to an embodiment of the present utility model, the air conditioner further includes: the low pressure sensor is arranged between the second on-off valve and the air return port of the compressor.

According to an embodiment of the present utility model, the air conditioner further includes: and the first temperature sensor is arranged on the compressor and is configured to detect the temperature of the compressor.

According to an embodiment of the present utility model, the air conditioner further includes: the system comprises a second temperature sensor and a third temperature sensor, wherein the second temperature sensor is arranged at an exhaust port of the compressor, the third temperature sensor is arranged at a return port of the compressor, the second temperature sensor is configured to acquire the exhaust temperature of the compressor, and the third temperature sensor is configured to acquire the return air temperature of the compressor.

According to an embodiment of the present utility model, the air conditioner further includes: and the fourth temperature sensor and/or the fifth temperature sensor are/is arranged on the indoor heat exchanger, the fifth temperature sensor is arranged on the outdoor heat exchanger, the fourth temperature sensor is configured to acquire the tube temperature of the indoor heat exchanger, and the fifth temperature sensor is configured to acquire the tube temperature of the outdoor heat exchanger.

According to an embodiment of the present utility model, the air conditioner further includes: the air conditioner comprises a controller and a current detection unit, wherein the current detection unit is electrically connected with the controller and is configured to detect the working current of the air conditioner.

According to an embodiment of the present utility model, the air conditioner further includes: the air conditioner comprises a controller and a power detection unit, wherein the power detection unit is electrically connected with the controller and is configured to detect the operation power of the air conditioner.

According to an embodiment of the present utility model, the air conditioner further includes: the device comprises a controller and a timer, wherein the timer is electrically connected with the controller and is configured to record the refrigerant recovery time.

According to an embodiment of the present utility model, the air conditioner further includes: and the refrigerant concentration sensor is arranged in the indoor unit and is configured to detect the refrigerant leakage concentration in the indoor unit.

According to an embodiment of the present utility model, the air conditioner further includes: an oil separator, one end of which is connected with an exhaust port of the compressor; and one end of the container is connected with the other end of the oil separator, the other end of the container is connected with the first on-off valve, and the second high-pressure sensor is arranged between the container and the first on-off valve.

Drawings

Fig. 1 is a schematic view of an air conditioner according to a first embodiment of the present utility model.

Fig. 2a is a schematic diagram of the air conditioner shown in fig. 1 in a cooling operation.

Fig. 2b is a schematic structural diagram of the air conditioner shown in fig. 1 during a heating operation.

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

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

An air conditioner according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of an air conditioner according to an embodiment of the present utility model.

Referring to fig. 1, the air conditioner includes: a compressor 101, a reversing valve 102, an indoor heat exchanger 103, and an outdoor heat exchanger 104. The exhaust port 11 of the compressor 101 is connected to the first end 21 of the reversing valve 102, the second end 22 of the reversing valve 102 is connected to the third end 23 of the reversing valve 102 through the indoor heat exchanger 103 and the outdoor heat exchanger 104 in sequence, and the fourth end 24 of the reversing valve 102 is connected to the return air port 12 of the compressor 101.

Specifically, the reversing valve 102 may be a four-way valve, and by adjusting the connection condition of the ports of the reversing valve 102, the flow direction of the refrigerant may be switched, so that the air conditioner operates according to a cooling or heating mode.

Referring to fig. 2a, when the air conditioner operates in a cooling mode, the first port 21 and the third port 23 of the control reversing valve 102 are connected, and the second port 22 and the fourth port 24 are connected. At this time, the refrigerant circulation flow path is: the refrigerant is circulated by the exhaust port 11 of the compressor 101, the first port 21 and the third port 23 of the reversing valve 102, the outdoor heat exchanger 104, the indoor heat exchanger 103, the second port 22 and the fourth port 24 of the reversing valve 102, and the return air port 12 of the compressor 101.

Referring to fig. 2b, when the air conditioner operates in a heating mode, the first port 21 and the second port 22 of the control switching valve 102 are connected, and the third port 23 and the fourth port 24 are connected. At this time, the refrigerant circulation flow path is: the cycle heats the exhaust port 11 of the compressor 101, the first port 21 and the second port 22 of the reversing valve 102, the indoor heat exchanger 103, the outdoor heat exchanger 104, the third port 23 and the fourth port 24 of the reversing valve 102, and the return air port 12 of the compressor 101.

With continued reference to fig. 1, the air conditioner further includes: a first on-off valve 105 and a second on-off valve 106, the first on-off valve 105 being provided between the discharge port 11 of the compressor 101 and the first end 21 of the reversing valve 102, the second on-off valve 106 being provided between the fourth end 24 of the reversing valve 102 and the return air port 12 of the compressor 101. After the first on-off valve 105 and the second on-off valve 106 are provided, the first on-off valve 105 and the second on-off valve 106 can be controlled to recover the refrigerant, for example, the first on-off valve 105 is configured to be opened for refrigerant recovery when the air conditioner leaks the refrigerant, and the second on-off valve 106 is configured to be opened for refrigerant recovery to the compressor side when the refrigerant recovery is completed.

Specifically, during the operation of the air conditioner, whether the air conditioner leaks refrigerant is detected in real time, and when the air conditioner leaks refrigerant, the first on-off valve 105 and the second on-off valve 106 are controlled in a certain sequence, and the compressor 101 is controlled to operate, so that the refrigerant is recovered to the compressor side.

Referring to fig. 2a, when the air conditioner is operated in a cooling mode, the first on-off valve 105 is opened and the compressor 101 is controlled to operate, and at this time, the refrigerant sequentially passes through the first port 21 and the third port 23 of the reversing valve 102, the outdoor heat exchanger 104, the indoor heat exchanger 103, the second port 22 and the fourth port 24 of the reversing valve 102, the second on-off valve 106, the return air port 12 of the compressor 101, and the discharge port 11 of the compressor 101. Since the first on-off valve 105 is in an off state, the exhaust port 11 of the compressor 101 cannot transmit the refrigerant to the outdoor heat exchanger 104, and after a period of time, the refrigerant in the air conditioner pipeline is recovered to the compressor side, at this time, the second on-off valve 106 is turned off, and the compressor 101 is controlled to stop running, so that the refrigerant is recovered to the compressor side.

Referring to fig. 2b, when the air conditioner is operated in a heating mode, the first on-off valve 105 is opened and the compressor 101 is controlled to operate, and at this time, the refrigerant sequentially passes through the first and second ports 21 and 22 of the reversing valve 102, the indoor heat exchanger 103, the outdoor heat exchanger 104, the third and fourth ports 23 and 24 of the reversing valve 102, the second on-off valve 106, the return air port 12 of the compressor 101, and the discharge port 11 of the compressor 101. Since the first on-off valve 105 is in an off state, the air outlet 11 of the compressor 101 cannot transmit the refrigerant to the indoor heat exchanger 103, and after a period of time, the refrigerant in the air conditioner pipeline is recovered to the compressor side, at this time, the second on-off valve 106 is turned off, and the compressor 101 is controlled to stop running, so that the refrigerant is recovered to the compressor side.

With continued reference to fig. 1, the air conditioner further includes: a first high pressure sensor 107 and/or a second high pressure sensor 108, the first high pressure sensor 107 being provided between the first on-off valve 105 and the first end 21 of the reversing valve 102, and the second high pressure sensor 108 being provided between the first on-off valve 105 and the discharge port 11 of the compressor 101. After the first high pressure sensor 107 and/or the second high pressure sensor 108 are provided, whether the refrigerant recovery is completed may be determined by the first high pressure sensor 107 and/or the second high pressure sensor 108, for example, the first high pressure sensor 107 is configured to detect the first high pressure to determine the refrigerant recovery completion time, and the second high pressure sensor 108 is configured to detect the second high pressure to determine the refrigerant recovery completion time.

Specifically, the first high pressure sensor 107, the second high pressure sensor 108 or the first high pressure sensor 107 and the second high pressure sensor 108 may be disposed on the air conditioner, and the high pressure sensor detects the corresponding high pressure to determine whether the refrigerant recovery is completed, so that when the refrigerant recovery is completed, the second on-off valve 106 is controlled to be opened, thereby reducing the lack of refrigerant recovery completion caused by opening the second on-off valve 106 in advance, and the increase of power consumption of the air conditioner caused by opening the second on-off valve 106 in a delayed manner.

When the air conditioner includes the first high pressure sensor 107, it is determined that refrigerant recovery is completed when the first high pressure detected by the first high pressure sensor 107 is less than a set value. Specifically, since the first on-off valve 105 is in an off state during refrigerant recovery, the high-pressure refrigerant exiting from the exhaust port 11 of the compressor 101 cannot pass through the first on-off valve 105, and at the same time, the refrigerant in the pipeline gradually flows toward the air return port 12 of the compressor 101, after a period of time, the high-pressure refrigerant between the first port 21 of the reversing valve 102 and the first on-off valve 105 gradually decreases, the pressure decreases, and the corresponding first high-pressure detected by the first high-pressure sensor 107 gradually decreases, which indicates that refrigerant recovery is completed when the pressure is smaller than a set value.

When the air conditioner includes the second high pressure sensor 108, it is determined that refrigerant recovery is completed when the second high pressure detected by the second high pressure sensor 108 is greater than a set value. Specifically, since the first on-off valve 105 is in an off state during refrigerant recovery, the high-pressure refrigerant exiting from the exhaust port 11 of the compressor 101 cannot pass through the first on-off valve 105, so that the high-pressure refrigerant is accumulated between the exhaust port 11 of the compressor 101 and the first on-off valve 105, the pressure gradually increases, and the second high-pressure detected by the corresponding second high-pressure sensor 108 gradually increases, when the second high-pressure is greater than the set value, which indicates that refrigerant recovery is completed.

When the air conditioner includes the first high pressure sensor 107 and the second high pressure sensor 108, it is determined that refrigerant recovery is completed when the first high pressure detected by the first high pressure sensor 107 is less than a set value or the second high pressure detected by the second high pressure sensor 108 is greater than a set value.

Therefore, by arranging the high-pressure sensor, the accurate judgment of whether the refrigerant recovery is finished can be realized.

In some embodiments, referring to fig. 3, the air conditioner further includes: the low pressure sensor 109, the low pressure sensor 109 is provided between the second on-off valve 106 and the return air port 12 of the compressor 101. After the low pressure sensor 109 is provided, whether the refrigerant recovery is completed may be determined by the low pressure sensor 109, for example, the low pressure sensor 109 is configured to detect the low pressure so as to determine the refrigerant recovery completion timing.

Specifically, when the air conditioner includes the low pressure sensor 109, the refrigerant recovery is determined to be completed when the low pressure detected by the low pressure sensor 109 is smaller than a set value. Specifically, during the refrigerant recovery process, the refrigerant in the pipeline gradually flows to the air return port 12 of the compressor 101 and finally gathers between the air discharge port 11 of the compressor 101 and the first on-off valve 105, so that the pressure at the air return port 12 of the compressor 101 is smaller at this time, and when the pressure is smaller than the set value, the refrigerant recovery is completed.

Therefore, by arranging the low-pressure sensor, the accurate judgment of whether the refrigerant recovery is finished can be realized.

In some embodiments, referring to fig. 3, the air conditioner further includes: the first temperature sensor 110, the first temperature sensor 110 is provided on the compressor 101, configured to detect the temperature of the compressor 101. After the first temperature sensor 110 is provided, whether the refrigerant recovery is completed or not may be determined by the first temperature sensor 110, for example, the first temperature sensor 110 is configured to detect the temperature of the compressor 101 so as to determine the refrigerant recovery completion timing.

Specifically, when the air conditioner includes the first temperature sensor 110, it is determined that the refrigerant recovery is completed when the surface temperature (the casing temperature) of the compressor 101 detected by the first temperature sensor 110 is greater than a set value. Specifically, during the refrigerant recovery process, the compressor 101 is always in an operating state, and the first on-off valve 105 provided at the exhaust port 11 of the compressor 101 is in an off state, so that the temperature of the compressor 101 gradually increases, and when the temperature is higher than the set value, the refrigerant recovery is completed.

Therefore, by arranging the temperature sensor, the accurate judgment of whether the refrigerant recovery is finished can be realized.

In some embodiments, referring to fig. 3, the air conditioner further includes: a second temperature sensor 111 and a third temperature sensor 112, the second temperature sensor 111 is provided at the exhaust port 11 of the compressor 101, the third temperature sensor 112 is provided at the return air port 12 of the compressor 101, the second temperature sensor 111 is configured to obtain the exhaust temperature of the compressor 101, and the third temperature sensor 112 is configured to obtain the return air temperature of the compressor 101. After the second temperature sensor 111 and the third temperature sensor 112 are provided, whether or not the refrigerant recovery is completed may be determined by the second temperature sensor 111 and the third temperature sensor 112, for example, the refrigerant recovery completion timing may be determined according to a temperature difference between the discharge temperature of the compressor 101 acquired by the second temperature sensor 111 and the return temperature of the compressor 101 acquired by the third temperature sensor 112.

Specifically, when the air conditioner includes the second temperature sensor 111 and the third temperature sensor 112, the exhaust temperature of the compressor 101 may be obtained through the second temperature sensor 111, the return air temperature of the compressor 101 may be obtained through the third temperature sensor 112, and further, a temperature difference between the exhaust temperature and the return air temperature may be obtained, and when the temperature difference is lower than a set value, it is indicated that refrigerant recovery is completed. Specifically, during normal operation of the air conditioner, the refrigerant at the air outlet 11 of the compressor 101 is a high-temperature high-pressure gaseous refrigerant, and the refrigerant at the air return 12 is a low-temperature low-pressure gaseous refrigerant, and at this time, the temperature difference between the air outlet temperature and the air return temperature is relatively large. In the refrigerant recovery process, the heat exchange amount of the refrigerant in the pipeline is reduced, so that the temperature and pressure of the refrigerant at the air return port 12 of the compressor 101 are higher, the temperature difference between the exhaust temperature and the air return temperature of the corresponding compressor 101 is reduced, and when the temperature difference is lower than a set value, the refrigerant recovery is completed.

Therefore, by arranging the temperature sensor, the accurate judgment of whether the refrigerant recovery is finished can be realized.

In some embodiments, referring to fig. 3, the air conditioner further includes: a fourth temperature sensor 113 and/or a fifth temperature sensor 114, the fourth temperature sensor 113 being provided on the indoor heat exchanger 103, the fifth temperature sensor 114 being provided on the outdoor heat exchanger 104, the fourth temperature sensor 113 being configured to acquire the tube temperature of the indoor heat exchanger 103, the fifth temperature sensor 114 being configured to acquire the tube temperature of the outdoor heat exchanger 104. After the fourth temperature sensor 113 and/or the fifth temperature sensor 114 are provided, whether the refrigerant recovery is completed or not may be determined by the fourth temperature sensor 113 and/or the fifth temperature sensor 114, for example, the refrigerant recovery completion timing may be determined according to the tube temperature of the indoor heat exchanger 103 acquired by the fourth temperature sensor 113 and/or the tube temperature of the outdoor heat exchanger 104 acquired by the fifth temperature sensor 114.

Specifically, the fourth temperature sensor 113, the fifth temperature sensor 114, or the fourth temperature sensor 113 and the fifth temperature sensor 114 may be provided in the air conditioner, and whether the refrigerant recovery is completed may be determined by detecting the temperatures of the respective heat exchangers through the temperature sensors.

When the air conditioner includes the fourth temperature sensor 113, it is determined that the refrigerant recovery is completed when a temperature difference between the indoor pipe temperature and the indoor environment temperature detected by the fourth temperature sensor 113 is less than a set value or an indoor pipe temperature change is small. Specifically, since the refrigerant in the pipe gradually gathers between the discharge port 11 of the compressor 101 and the first on-off valve 105 during the refrigerant recovery process, the refrigerant in the indoor heat exchanger 103 is reduced, the heat exchange amount is reduced, and the pipe temperature thereof gradually approaches the indoor environment temperature, and thus the refrigerant recovery is determined to be completed when the temperature difference between the indoor pipe temperature and the indoor environment temperature detected by the fourth temperature sensor 113 is smaller than the set value, or the indoor pipe temperature change is small.

When the air conditioner includes the fifth temperature sensor 114, it is determined that the refrigerant recovery is completed when the temperature difference between the outdoor pipe temperature and the outdoor ambient temperature detected by the fifth temperature sensor 114 is less than a set value or the outdoor pipe temperature is changed less. Specifically, since the refrigerant in the pipe is gradually collected between the discharge port 11 of the compressor 101 and the first on-off valve 105 during the refrigerant recovery process, the refrigerant in the outdoor heat exchanger 104 is reduced, the heat exchange amount is reduced, and the pipe temperature thereof is gradually close to the outdoor ambient temperature, and thus the refrigerant recovery is determined to be completed when the temperature difference between the outdoor pipe temperature and the outdoor ambient temperature detected by the fifth temperature sensor 114 is smaller than the set value, or the change of the outdoor pipe temperature is small.

When the air conditioner includes the fourth temperature sensor 113 and the fifth temperature sensor 114, it is determined that the refrigerant recovery is completed when the temperature difference between the indoor tube temperature and the indoor environment temperature detected by the fourth temperature sensor 113 is less than a set value, or when the indoor tube temperature change is small, or when the temperature difference between the outdoor tube temperature and the outdoor environment temperature detected by the fifth temperature sensor 114 is less than a set value, or when the outdoor tube temperature change is small. Or when the temperature difference between the indoor tube temperature and the outdoor tube temperature is smaller than a set value or the temperature difference is smaller in change, determining that refrigerant recovery is completed.

Therefore, by arranging the temperature sensor, the accurate judgment of whether the refrigerant recovery is finished can be realized.

In some embodiments, the air conditioner further comprises: a controller and a current detection unit (both not shown), the current detection unit being electrically connected to the controller, the current detection unit being configured to detect an operating current of the air conditioner. After the current detection unit is arranged, whether the refrigerant recovery is finished or not can be determined through the current detection unit.

For example, referring to fig. 3, the controller is disposed on the outdoor electronic control unit 119 and connected to a current detecting unit for controlling the current detecting unit for detecting an operation current of the air conditioner. In the refrigerant recovery process, the current of the air conditioner gradually decreases, and when the current is smaller than a set value or the current change is smaller, the refrigerant recovery is completed.

Therefore, by arranging the current sensor, the accurate judgment of whether the refrigerant recovery is finished can be realized.

In some embodiments, the air conditioner further comprises: a controller and a power detection unit (both not shown), the power detection unit being electrically connected to the controller, the power detection unit being configured to detect an operating power of the air conditioner. After the power detection unit is arranged, whether the refrigerant recovery is finished or not can be determined through the power detection unit.

For example, referring to fig. 3, the controller is disposed on the outdoor electronic control unit 119 and connected to a power detection unit for controlling the power detection unit for detecting the operation power of the air conditioner. In the refrigerant recovery process, the power of the air conditioner is gradually reduced, and when the power is smaller than a set value or the power change is smaller, the refrigerant recovery is completed. The power detection unit may include a current sensor, detect a current of the air conditioner through the current sensor, and multiply the current with a voltage to obtain power of the air conditioner.

Therefore, by arranging the power detection unit, the accurate judgment of whether the refrigerant recovery is finished can be realized.

In some embodiments, the air conditioner further comprises: the device comprises a controller and a timer (not shown), wherein the timer is electrically connected with the controller and is configured to record the refrigerant recovery time. After the timer is set, whether the refrigerant recovery is completed or not can be determined by the timer.

For example, referring to fig. 3, the controller is disposed on the outdoor electric control device 119 and connected to a timer configured on the air conditioner, and is configured to control the timer, where the timer is configured to record a refrigerant recovery time, that is, an operation time of the compressor, and if the detected refrigerant recovery time is greater than a preset value, it is indicated that the operation time of the compressor is sufficient to recover the refrigerant in the air conditioner pipeline, and it is indicated that the refrigerant recovery is completed.

Therefore, by setting the timer, the accurate judgment of whether the refrigerant recovery is finished can be realized.

In practical application, one or more of the first high-pressure sensor 107, the second high-pressure sensor 108, the low-pressure sensor 109, the first temperature sensor 110, the second temperature sensor 111, the third temperature sensor 112, the fourth temperature sensor 113, the fifth temperature sensor 114, the current detection unit, the power detection unit and the timer may be set in the air conditioner according to the requirement, and when all the settings are set, the comprehensive detection of the refrigerant recovery completion time may be realized.

In some embodiments, the air conditioner further comprises: and the refrigerant concentration sensor is arranged in the indoor unit and is configured to detect the refrigerant leakage concentration in the indoor unit. After the refrigerant concentration sensor is arranged, whether the refrigerant leaks or not can be determined by the refrigerant concentration sensor.

In the running process of the air conditioner, the refrigerant concentration sensor continuously runs to detect the refrigerant concentration of the indoor unit, and if the refrigerant concentration is larger than a preset refrigerant concentration threshold value, the refrigerant leakage of the indoor unit is indicated, and at the moment, the refrigerant is recovered.

In the refrigerant recovery process, the indoor fan is also controlled to be in an operating state so as to discharge the leaked refrigerant out of the indoor unit until the refrigerant concentration detected by the refrigerant concentration sensor is lower than a set value.

In some embodiments, referring to fig. 3, the air conditioner further includes: an oil separator 115 and a container 116, wherein one end of the oil separator 115 is connected to the discharge port 11 of the compressor 101; one end of the container 116 is connected to the other end of the oil separator 115, the other end of the container 116 is connected to the first on-off valve 105, and the second high-pressure sensor 108 is provided between the container 116 and the first on-off valve 105.

Specifically, the oil separator 115 is used to separate the refrigerant and the lubricating oil that exit the discharge port 11 of the compressor 101, and to recover the lubricating oil into the compressor 101, thereby reducing the risk of the compressor 101 running starved. The container 116 may be a high-pressure container to recover the refrigerant to the liquid storage space except the indoor heat exchanger 103 and the outdoor heat exchanger 104, avoiding two positions where the refrigerant is easy to leak.

In addition, the air conditioner includes a first throttling part 117 and a second throttling part 118, which are not limited herein.

In summary, according to the air conditioner provided by the embodiment of the utility model, the refrigerant recovery can be realized and the refrigerant waste can be reduced by arranging the on-off valve and the corresponding detection part.

It is to be understood that portions of the present utility model may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," 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 present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. An air conditioner, comprising:

The air outlet of the compressor is connected with the first end of the reversing valve, the second end of the reversing valve is connected with the third end of the reversing valve sequentially through the indoor heat exchanger and the outdoor heat exchanger, and the fourth end of the reversing valve is connected with the air return port of the compressor;

The first on-off valve is arranged between the exhaust port of the compressor and the first end of the reversing valve, and the second on-off valve is arranged between the fourth end of the reversing valve and the air return port of the compressor;

the first high-pressure sensor is arranged between the first on-off valve and the first end of the reversing valve, and/or the second high-pressure sensor is arranged between the first on-off valve and the exhaust port of the compressor.

2. The air conditioner of claim 1, further comprising:

The low pressure sensor is arranged between the second on-off valve and the air return port of the compressor.

3. The air conditioner of claim 1, further comprising:

And the first temperature sensor is arranged on the compressor and is configured to detect the temperature of the compressor.

4. The air conditioner of claim 1, further comprising:

the system comprises a compressor, a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged at an exhaust port of the compressor, the second temperature sensor is arranged at an air return port of the compressor, the second temperature sensor is configured to acquire the exhaust temperature of the compressor, and the third temperature sensor is configured to acquire the air return temperature of the compressor.

5. The air conditioner of claim 1, further comprising:

A fourth temperature sensor and/or a fifth temperature sensor, wherein the fourth temperature sensor is arranged on the indoor heat exchanger, the fifth temperature sensor is arranged on the outdoor heat exchanger, the fourth temperature sensor is configured to acquire the tube temperature of the indoor heat exchanger, and the fifth temperature sensor is configured to acquire the tube temperature of the outdoor heat exchanger.

6. The air conditioner of claim 1, further comprising a controller and a current detection unit electrically connected to the controller, the current detection unit configured to detect an operating current of the air conditioner.

7. The air conditioner of claim 1, further comprising a controller and a power detection unit electrically connected to the controller, the power detection unit configured to detect an operating power of the air conditioner.

8. The air conditioner of claim 1, further comprising a controller and a timer electrically connected to the controller, the timer configured to record a refrigerant recovery period.

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

And the refrigerant concentration sensor is arranged in the indoor unit and is configured to detect the refrigerant leakage concentration in the indoor unit.

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

One end of the oil separator is connected with the exhaust port of the compressor;

And one end of the container is connected with the other end of the oil separator, the other end of the container is connected with the first on-off valve, and the second high-pressure sensor is arranged between the container and the first on-off valve.