Air conditioner

Abstract

The utility model provides an air conditioner, and relates to the technical field of air conditioners. The air conditioner comprises a refrigerant system and a recovery system. The refrigerant system comprises a refrigerant pipeline, a compressor and a gas-liquid separator, wherein the compressor and the gas-liquid separator are arranged on the refrigerant pipeline. The recovery system comprises a recovery device and a washing pipe, one end of the washing pipe is connected with the bottom of the gas-liquid separator, the other end of the washing pipe is connected with the recovery device, and the recovery device is used for recovering foreign matters separated from the refrigerant by the gas-liquid separator. The air conditioner provided by the utility model can be used for recycling foreign matters introduced when parts are updated, so that the foreign matters are prevented from entering the compressor.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to an air conditioner. Background Technology

[0002] Currently, air conditioners on the market often require updates to components such as indoor units and compressors based on user needs in practical applications, especially multi-split air conditioners with multiple indoor units.

[0003] During the replacement of air conditioners, it is very easy for foreign objects such as dust and oil to be introduced into the refrigerant lines. This can cause the foreign objects to enter the compressor when the air conditioner is turned on, resulting in compressor damage. Utility Model Content

[0004] The problem solved by this invention is to prevent foreign objects introduced during the replacement of air conditioner components from damaging the compressor.

[0005] To address the aforementioned problems, this utility model provides an air conditioner that can recycle foreign objects introduced during component replacement, preventing them from entering the compressor.

[0006] An air conditioner includes a refrigerant system and a recovery system, wherein the refrigerant system includes refrigerant piping and a compressor and a gas-liquid separator disposed on the refrigerant piping;

[0007] The recycling system includes a recycling device and a cleaning pipe. One end of the cleaning pipe is connected to the bottom of the gas-liquid separator, and the other end is connected to the recycling device. The recycling device is used to recover foreign matter separated from the refrigerant by the gas-liquid separator.

[0008] The air conditioner provided in this embodiment of the invention has a recycling system whose recycling device is connected to the bottom of the gas-liquid separator in the refrigerant system via a cleaning pipe. In practical applications, after the air conditioner completes component replacement, it can operate in a cleaning mode (i.e., cooling mode) for a period of time to allow foreign matter such as dust and oil in the refrigerant lines to flow into the gas-liquid separator along with the refrigerant. This foreign matter deposited at the bottom of the gas-liquid separator flows into the recycling device through the cleaning pipe, thus enabling the recycling device to recover the foreign matter. Therefore, the air conditioner provided in this embodiment of the invention can recover foreign matter introduced during component replacement, preventing it from entering the compressor.

[0009] In an alternative embodiment, the recovery device is positioned below the gas-liquid separator in the vertical direction.

[0010] The recovery device is located below the gas-liquid separator, allowing foreign objects accumulated at the bottom of the gas-liquid separator to smoothly enter the recovery device under the action of internal pressure and gravity.

[0011] In an optional embodiment, a control valve is provided on the cleaning tube, the control valve being used to control the opening and closing of the cleaning tube.

[0012] The opening and closing of the cleaning pipe is controlled by the control valve. When it is necessary to recover foreign objects in the refrigerant pipeline, the control valve is opened. After the foreign objects are recovered, the control valve can be closed to ensure the stable operation of the refrigerant system.

[0013] In an optional implementation, the control valve is a solenoid valve.

[0014] In an optional embodiment, the diameter of the control valve is between 7 mm and 9 mm.

[0015] Because the density of foreign matter flowing in the cleaning pipe is high, a large-diameter valve body is not required, and a small-diameter model of control valve can be selected to save costs.

[0016] In an optional embodiment, the recycling device has a receiving cavity for accommodating foreign objects, the receiving cavity being connected to the washing tube.

[0017] Foreign matter in the gas-liquid separator flows into the receiving cavity through the washing pipe for storage, thus realizing the recovery of foreign matter.

[0018] In an optional embodiment, the end of the washing tube away from the gas-liquid separator is connected to the top of the accommodating cavity.

[0019] After foreign objects detach from the cleaning tube and enter the receiving cavity, they can fall to the bottom of the receiving cavity, avoiding accumulation near the outlet of the cleaning tube and ensuring continuous foreign object recovery.

[0020] In an optional embodiment, the recovery device is provided with a pressure relief component, and the accommodating cavity is selectively connected to the outside through the pressure relief component.

[0021] The pressure relief device can connect or isolate the refrigerant cavity from the outside environment. When recovering foreign objects, the pressure relief device can be opened to connect the cavity to the outside, balancing the internal and external air pressure and ensuring that the foreign objects can smoothly enter the cavity. After recovery is complete, the pressure relief device can be closed to ensure stable operation of the refrigerant system.

[0022] In an optional embodiment, the refrigerant system further includes a four-way valve, an outdoor condenser, and an indoor evaporator installed on the refrigerant pipeline.

[0023] In an optional embodiment, there are multiple indoor evaporators, which are connected in parallel on the refrigerant pipeline.

[0024] The refrigerant system includes multiple indoor evaporators, meaning the air conditioner is a multi-split air conditioner. After replacing the indoor unit or compressor, it can recycle any foreign objects introduced during the replacement process, preventing them from entering the compressor. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100-Air conditioner; 110-Refrigerant system; 111-Refrigerant piping; 112-Compressor; 113-Gas-liquid separator; 114-Four-way valve; 115-Outdoor condenser; 116-Indoor evaporator; 120-Recovery system; 121-Recovery device; 1211-Reception chamber; 122-Cleansing pipe; 123-Control valve. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Please see Figure 1 , Figure 1 The diagram shown is a structural schematic of the air conditioner 100 provided in this embodiment.

[0030] The air conditioner 100 provided in this embodiment is actually a multi-split type, which has one outdoor unit and multiple indoor units. The air conditioner 100 includes a refrigerant system 110, which includes a refrigerant pipeline 111 and a compressor 112, a gas-liquid separator 113, a four-way valve 114, an outdoor condenser 115, and multiple indoor evaporators 116 installed on the refrigerant pipeline 111. The multiple indoor evaporators 116 are connected in parallel on the refrigerant pipeline 111.

[0031] In practical applications, air conditioner 100 usually needs to replace multiple components, including compressor 112 and indoor unit. During the disassembly and assembly process, it is inevitable that foreign objects such as dust and oil will enter the refrigerant pipe 111. As a result, when the air conditioner 100 is running normally after the replacement, the foreign objects in the refrigerant pipe 111 will flow into the compressor 112, causing damage to the compressor 112.

[0032] To solve this problem, the air conditioner 100 provided in this embodiment also includes a recycling system 120. The recycling system 120 includes a recycling device 121 and a cleaning pipe 122. One end of the cleaning pipe 122 is connected to the bottom of the gas-liquid separator 113, and the other end is connected to the recycling device 121. The recycling device 121 is used to recycle foreign matter separated from the refrigerant by the gas-liquid separator 113.

[0033] Specifically, after the air conditioner 100 completes the replacement of components such as the compressor 112 or indoor unit, the air conditioner 100 can run in cooling mode for a period of time. The refrigerant output from the compressor 112 flows sequentially through the outdoor refrigerant receiver and multiple indoor evaporators 116 before entering the gas-liquid separator 113. During this process, the refrigerant carries foreign objects from the refrigerant pipe 111 into the gas-liquid separator 113. The foreign objects and refrigerant are separated in the gas-liquid separator 113. The refrigerant flows to the input end of the compressor 112 for the next cycle, while the foreign objects enter the recovery device 121 through the cleaning pipe 122 to recover the foreign objects and prevent them from entering the compressor 112.

[0034] In this embodiment, the recycling device 121 has a receiving cavity 1211 for accommodating foreign objects, and the receiving cavity 1211 is connected to the washing pipe 122. In practical applications, when recycling foreign objects, the foreign objects at the bottom of the gas-liquid separator 113 flow into the receiving cavity 1211 of the recycling device 121 through the washing pipe 122. The receiving cavity 1211 stores the inflowing foreign objects, thereby achieving recycling.

[0035] After the gaseous refrigerant in the refrigerant line 111 carries foreign objects into the gas-liquid separator 113, the foreign objects, due to their greater gravity, sink and accumulate in the bottom space of the gas-liquid separator 113. The gaseous refrigerant flows out of the gas-liquid separator 113 from the top space, thus achieving gas-liquid separation between the foreign objects and the refrigerant. Furthermore, as the refrigerant in the refrigerant line 111 continues to enter the gas-liquid separator 113, under pressure, the foreign objects accumulated at the bottom flow into the cleaning pipe 122 and then into the receiving cavity 1211 of the recovery device 121.

[0036] It is understandable that foreign objects entering the accommodating cavity 1211 will accumulate at the bottom of the accommodating cavity 1211 under the action of gravity. In order to avoid the accumulation of foreign objects causing blockage of the opening of the cleaning tube 122, in this embodiment, the end of the cleaning tube 122 away from the gas-liquid separator 113 is connected to the top of the accommodating cavity 1211.

[0037] In practical applications, foreign objects reaching the end of the cleaning tube 122 that connects to the receiving cavity 1211 fall to the bottom of the receiving cavity 1211 under the influence of gravity, achieving rapid separation from the opening of the cleaning tube 122. Furthermore, foreign objects entering the receiving cavity 1211 accumulate at the bottom of the receiving cavity 1211, away from the opening of the cleaning tube 122, thus preventing the opening of the cleaning tube 122 from becoming blocked and ensuring the continuous operation of the foreign object recovery process.

[0038] To further improve the smoothness of the foreign matter recovery process, in this embodiment, the recovery device 121 is positioned below the gas-liquid separator 113 in the vertical direction. It is understood that because the recovery device 121 is below the gas-liquid separator 113, i.e., there is a height difference between the two, foreign matter entering the cleaning pipe 122 can quickly flow to the recovery device 121 under the combined action of pressure and gravity, avoiding prolonged retention of foreign matter in the cleaning pipe 122 and ensuring recovery efficiency.

[0039] Considering that in practical applications, as foreign matter continuously flows into the receiving cavity 1211 of the recycling device 121 through the washing pipe 122, the pressure inside the receiving cavity 1211 will continuously increase, which will hinder the continuous inflow of foreign matter. To solve this problem, in another embodiment, a pressure relief device can be provided in the recycling device 121, and the receiving cavity 1211 can be selectively connected to the outside through the pressure relief device.

[0040] Understandably, the pressure relief component can have both open and closed states. When the pressure relief component is in the open state, the accommodating cavity 1211 is connected to the outside through the pressure relief component, thereby relieving pressure on the accommodating cavity 1211 and ensuring that foreign matter in the gas-liquid separator 113 can continuously flow into the accommodating cavity 1211. After the foreign matter has been recovered, the pressure relief component can be switched to the closed state.

[0041] To effectively control the foreign matter recovery process, in this embodiment, a control valve 123 is installed on the cleaning pipe 122. The control valve 123 is used to control the opening and closing of the cleaning pipe 122. After the component replacement is completed, the control valve 123 is opened, allowing the recovery device 121 to connect with the gas-liquid separator 113 through the cleaning pipe 122. The air conditioner 100 operates in cooling mode for a period of time, allowing the foreign matter in the refrigerant pipe 111 that enters the gas-liquid separator 113 with the gaseous refrigerant to flow quickly into the recovery device 121 through the open cleaning pipe 122 after being separated from the gaseous refrigerant by gravity.

[0042] After the foreign matter is recovered, the system can actually run in cooling mode for a period of time and then stop. At this time, the control valve 123 is closed so that the recovery device 121 is not connected to the gas-liquid separator 113, thus avoiding the impact of the recovery system 120 on the refrigerant system 110 and ensuring that the refrigerant system 110 can operate normally and obtain good heating or cooling effects.

[0043] Preferably, in this embodiment, the control valve 123 is a solenoid valve. Furthermore, since the density of foreign matter flowing in the cleaning pipe 122 is high, a large-diameter valve body is not required, and a small-diameter model of control valve 123 can be selected to save costs. Preferably, in this embodiment, the diameter of control valve 123 is between 7mm and 9mm.

[0044] In summary, the air conditioner 100 provided in this embodiment is equipped with a recovery system 120 that can recover foreign matter in the refrigerant system 110, preventing damage to the compressor 112. Furthermore, the structure of the refrigerant pipeline 111 of the air conditioner 100 remains unchanged, and no additional valve structure is required on the refrigerant pipeline 111, thus avoiding increased pressure drop during cooling or heating operation, which could lead to a decrease in suction pressure and ensure stable cooling and heating capacity. In addition, the recovery system 120 has a simple structure, with only one control valve 123, resulting in low production costs.

[0045] Although the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An air conditioner, characterized in that, It includes a refrigerant system (110) and a recovery system (120). The refrigerant system (110) includes a refrigerant pipeline (111) and a compressor (112) and a gas-liquid separator (113) installed on the refrigerant pipeline (111). The recovery system (120) includes a recovery device (121) and a cleaning pipe (122). One end of the cleaning pipe (122) is connected to the bottom of the gas-liquid separator (113), and the other end is connected to the recovery device (121). The recovery device (121) is used to recover foreign matter separated from the refrigerant by the gas-liquid separator (113).

2. The air conditioner according to claim 1, characterized in that, In the vertical direction, the recovery device (121) is located below the gas-liquid separator (113).

3. The air conditioner according to claim 1, characterized in that, A control valve (123) is provided on the cleaning tube (122), and the control valve (123) is used to control the opening and closing of the cleaning tube (122).

4. The air conditioner according to claim 3, characterized in that, The control valve (123) is a solenoid valve.

5. The air conditioner according to claim 3, characterized in that, The diameter of the control valve (123) is between 7 mm and 9 mm.

6. The air conditioner according to claim 1, characterized in that, The recycling device (121) has a receiving cavity (1211) for receiving foreign objects, and the receiving cavity (1211) is connected to the washing tube (122).

7. The air conditioner according to claim 6, characterized in that, The end of the cleaning tube (122) away from the gas-liquid separator (113) is connected to the top of the accommodating cavity (1211).

8. The air conditioner according to claim 6, characterized in that, The recovery device (121) is equipped with a pressure relief component, and the accommodating cavity (1211) is selectively connected to the outside world through the pressure relief component.

9. The air conditioner according to claim 1, characterized in that, The refrigerant system (110) also includes a four-way valve (114), an outdoor condenser (115), and an indoor evaporator (116) installed on the refrigerant pipeline (111).

10. The air conditioner according to claim 9, characterized in that, The number of indoor evaporators (116) is multiple, and the multiple indoor evaporators (116) are connected in parallel on the refrigerant pipeline (111).

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