Air conditioner
By introducing a recycling system and a drain bypass pipeline into the air conditioner, the problem of foreign matter entering the compressor during the air conditioner replacement process was solved, and the stable operation of the refrigerant system and the effective recycling of foreign matter were achieved.
Patent Information
- Application Number
- CN202520075696.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-13
AI Technical Summary
During the air conditioner replacement process, foreign objects such as dust and oil can easily enter the refrigerant lines, causing damage to the compressor.
Design an air conditioner that includes a refrigerant system and a recovery system. Through a recovery pipeline and a drain bypass pipeline, foreign matter can be separated and recovered to prevent foreign matter from entering the compressor.
It effectively prevents foreign objects from entering the compressor, ensures the normal operation of the refrigerant system, avoids compressor damage, and reduces refrigerant waste.
Smart Images
Figure CN223896298U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air conditioning technical field, specifically, relate to a kind of air conditioners. BACKGROUND
[0002] At present, air conditioner on market, in actual application, usually need to update indoor unit, compressor and the like components according to user demand, especially the multi-connected air conditioner with multiple indoor units.
[0003] In the air conditioner updating process, dust, oil stains and the like foreign matter are easily introduced into the refrigerant pipeline, causing the foreign matter to enter the compressor when the subsequent air conditioner is started, resulting in damage to the compressor. INVENTION CONTENTS
[0004] The problem solved by the utility model is to prevent the foreign matter introduced during the updating of the air conditioner components from damaging the compressor.
[0005] To solve the above problems, the utility model provides an air conditioner, which can recycle and process the foreign matter introduced during the updating of the components, to prevent the foreign matter from entering the compressor.
[0006] An air conditioner includes a refrigerant system and a recycling system, the refrigerant system includes a refrigerant pipeline, a compressor and a gas-liquid separator arranged on the refrigerant pipeline;
[0007] The recycling system includes a recycling pipeline, a recycling device and a liquid discharge bypass pipe, one end of the recycling pipeline is connected to the bottom of the gas-liquid separator, the other end is in communication with the input end of the compressor, the recycling device and the liquid discharge bypass pipe are arranged in parallel on the recycling pipeline, the recycling device is used to recycle the foreign matter separated from the refrigerant by the gas-liquid separator, and the liquid discharge bypass pipe is used to transport the liquid refrigerant retained in the gas-liquid separator to the compressor.
[0008] The air conditioner provided by the utility model embodiment can run in a clean mode (i.e., a refrigeration mode) for a period of time after completing component updating, so that the dust, oil stains and the like foreign matter in the refrigerant pipeline enter the gas-liquid separator with the refrigerant, the foreign matter is gravity-separated from the refrigerant in the gas-liquid separator and accumulated at the bottom of the gas-liquid separator. When recycling of the foreign matter is needed, the recycling pipeline transports the foreign matter in the gas-liquid separator to the recycling device. When liquid refrigerant is retained in the gas-liquid separator, the liquid refrigerant retained at the bottom of the gas-liquid separator can be transported to the input end of the compressor through the liquid discharge bypass pipe bypassing the recycling device, so as to restore the suction superheat degree and discharge superheat degree of the compressor to normal, thereby ensuring normal operation of the refrigerant system.
[0009] In an optional embodiment, a first control valve is arranged on the recovery pipeline between the gas-liquid separator and the recovery device, and is used to control the opening and closing of the recovery pipeline between the gas-liquid separator and the recovery device, and one end of the liquid discharge bypass pipe is connected between the gas-liquid separator and the first control valve.
[0010] The first control valve is used to control the opening and closing of the gas-liquid recovery pipeline between the gas-liquid separator and the recovery device, and when recovery of foreign matters is needed, the first control valve is opened, and after the recovery of foreign matters is completed, the first control valve is closed.
[0011] In an optional embodiment, the diameter of the first control valve is between 7mm and 9mm.
[0012] Since the density of the foreign matters flowing in the recovery pipeline is large, a large-diameter valve body is not needed, and a small-diameter type of the first control valve can be selected to save costs.
[0013] In an optional embodiment, a second control valve is arranged on the recovery pipeline between the recovery device and the compressor, and is used to control the opening and closing of the recovery pipeline between the recovery device and the compressor, and the other end of the liquid discharge bypass pipe is connected between the second control valve and the compressor.
[0014] The second control valve is used to control the opening and closing of the recovery pipeline between the recovery device and the compressor, and when recovery of foreign matters is needed, the second control valve is opened, and after the recovery of foreign matters is completed, the second control valve is closed.
[0015] In an optional embodiment, the diameter of the second control valve is between 7mm and 9mm.
[0016] The second control valve is selected to be a small-diameter type, which can further reduce costs.
[0017] In an optional embodiment, a third control valve is arranged on the liquid discharge bypass pipe, and is used to control the opening and closing of the liquid discharge bypass pipe.
[0018] The third control valve is used to control the opening and closing of the liquid discharge bypass pipe, and when recovery of foreign matters is performed, the first control valve and the second control valve are controlled to be opened, and the third control valve is controlled to be closed, so that the recovery pipeline inputs the foreign matters in the gas-liquid separator into the recovery device; when liquid refrigerant stagnation occurs in the gas-liquid separator, the first control valve and the second control valve are controlled to be closed, and the third control valve is controlled to be opened, so that the liquid refrigerant at the bottom of the gas-liquid separator can flow into the compressor through the recovery device.
[0019] In an optional embodiment, the diameter of the third control valve is between 3mm and 5mm.
[0020] The third control valve is selected from a small caliber type, which can avoid a large amount of liquid refrigerant from flowing into the compressor rapidly and causing damage to the compressor.
[0021] In an optional embodiment, the recovery device has a containing cavity for containing foreign matters, and the containing cavity is in communication with the recovery pipeline.
[0022] The containing cavity of the recovery device can contain and store the inflowing foreign matters, and the foreign matters are recovered.
[0023] In an optional embodiment, the recovery pipeline comprises an input pipe section and an output pipe section, one end of the input pipe section is connected to the bottom of the gas-liquid separator, and the other end is connected to the top of the containing cavity.
[0024] One end of the output pipe section is connected to the top of the containing cavity, and the other end is in communication with the input end of the compressor.
[0025] One end of the input pipe section is connected to the bottom of the gas-liquid separator, and the other end is connected to the top of the containing cavity. One end of the output pipe section is connected to the top of the containing cavity, and the other end is in communication with the input end of the compressor. After the foreign matters and the excess gaseous refrigerant enter the top of the containing cavity, they are separated under the action of gravity. The foreign matters fall to the bottom of the containing cavity, and the excess gaseous refrigerant enters the output pipe section from the top of the containing cavity and then flows into the compressor, thereby avoiding refrigerant loss during the recovery process.
[0026] In an optional embodiment, the refrigerant system further comprises a plurality of indoor evaporators, and the plurality of indoor evaporators are arranged in parallel on the refrigerant pipeline.
[0027] The refrigerant system comprises a plurality of indoor evaporators, i.e., the air conditioner is a multi-connected air conditioner. After the indoor unit or the compressor is updated, the foreign matters introduced during the update can be recovered and treated, and the foreign matters can be prevented from entering the compressor. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 The structure of the air conditioner is provided.
[0029] BRIEF DESCRIPTION OF DRAWINGS
[0030] 100-air conditioner; 110-refrigerant system; 111-refrigerant pipeline; 112-compressor; 113-gas-liquid separator; 115-indoor evaporator; 117-outdoor condenser; 119-four-way valve; 130-recovery system; 131-recovery pipeline; 1311-first control valve; 1312-second control valve; 133-recovery device; 1331-containing cavity; 135-liquid discharge bypass pipe; 1351-third control valve. DETAILED DESCRIPTION
[0031] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.
[0032] Please refer to Figure 1 , Figure 1 The structure schematic view of the air conditioner 100 provided by the embodiment is shown.
[0033] The air conditioner 100 provided by the embodiment is multi-connected, having one outdoor unit and multiple indoor units. The air conditioner 100 comprises a refrigerant system 110, the refrigerant system 110 comprising a refrigerant pipeline 111 and a compressor 112 and a gas-liquid separator 113 arranged on the refrigerant pipeline 111. It can be understood that the refrigerant system 110 further comprises an outdoor condenser 117, a four-way valve 119 and multiple indoor evaporators 115 arranged on the refrigerant pipeline 111.
[0034] In actual application, the air conditioner 100 usually needs to update multiple components including the compressor 112 and the indoor unit. In the disassembly and assembly process, dust, oil stains and other foreign matters will inevitably enter the refrigerant pipeline 111, so that when the air conditioner 100 is normally operated after the update is completed, the foreign matters in the refrigerant pipeline 111 will flow into the compressor 112, causing damage to the compressor 112.
[0035] In order to solve this problem, the air conditioner 100 provided by the embodiment further comprises a recovery system 130, the recovery system 130 comprising a recovery pipeline 131 and a recovery device 133 arranged on the recovery pipeline 131. One end of the recovery device 133 is connected with the bottom of the gas-liquid separator 113, and the other end is in communication with the input end of the compressor 112. The recovery device 133 is used for recovering the foreign matters separated from the refrigerant by the gas-liquid separator 113.
[0036] Specifically, after the air conditioner 100 completes the replacement of the components such as the compressor 112 or the indoor unit, the air conditioner 100 can first operate in the refrigeration mode for a period of time. The refrigerant output by the compressor 112 enters the gas-liquid separator 113 after sequentially flowing through the outdoor condenser 117 and the multiple indoor evaporators 115. In this process, the foreign matters in the refrigerant pipeline 111 will enter the gas-liquid separator 113 together with the refrigerant. After the foreign matters and the refrigerant are separated in the gas-liquid separator 113, the foreign matters enter the recovery device 133 through the recovery pipeline 131. The excess refrigerant entering the recovery device 133 together through the recovery pipeline 131 flows back to the input end of the compressor 112, avoiding waste of the refrigerant.
[0037] It can be understood that the refrigerant flowing through the gas-liquid separator 113 is normally in a gaseous state, but in the case that the ambient temperature where the outdoor unit is located is low and the air conditioner 100 is operated for a long time, the gaseous refrigerant originally present in the gas-liquid separator 113 will condense into a liquid state and stagnate at the bottom of the gas-liquid separator 113. The stagnated liquid refrigerant cannot participate in the circulation of the refrigerant system 110, affecting the performance of the air conditioner 100. In order to solve this problem, in the embodiment, the recovery system 130 further includes a liquid discharge bypass pipe 135, which is arranged in parallel with the recovery device 133 on the recovery pipeline 131. The liquid discharge bypass pipe 135 is used to transport the liquid refrigerant stagnating in the gas-liquid separator 113 to the compressor 112.
[0038] In actual application, in the case that liquid refrigerant stagnation occurs in the gas-liquid separator 113, the liquid refrigerant can be transported to the input end of the compressor 112 through the liquid discharge bypass pipe 135 bypassing the recovery device 133, avoiding the liquid refrigerant being recovered by the recovery device 133 and being able to re-enter the compressor 112 to participate in the next cycle, thereby ensuring that the suction superheat and discharge superheat of the compressor 112 return to normal, thereby ensuring the normal operation of the refrigerant system 110.
[0039] In the embodiment, a first control valve 1311 is arranged on the recovery pipeline 131 between the gas-liquid separator 113 and the recovery device 133. The first control valve 1311 is used to control the on-off of the recovery pipeline 131 between the gas-liquid separator 113 and the recovery device 133. One end of the liquid discharge bypass pipe 135 is connected between the gas-liquid separator 113 and the first control valve 1311.
[0040] A second control valve 1312 is arranged on the recovery pipeline 131 between the recovery device 133 and the compressor 112. The second control valve 1312 is used to control the on-off of the recovery pipeline 131 between the recovery device 133 and the compressor 112. The other end of the liquid discharge bypass pipe 135 is connected between the second control valve 1312 and the compressor 112. A third control valve 1351 is arranged on the liquid discharge bypass pipe 135. The third control valve 1351 is used to control the on-off of the liquid discharge bypass pipe 135.
[0041] In actual application, when foreign matter recovery is needed, the first control valve 1311 and the second control valve 1312 are controlled to be open, and the third control valve 1351 is controlled to be closed. At this time, the foreign matter separated from the refrigerant by gravity in the gas-liquid separator 113 can flow into the recovery device 133 through the recovery pipeline 131, and if there is part of the gaseous refrigerant entering the recovery device 133 together with the foreign matter, this part of the gaseous refrigerant can flow into the input end of the compressor 112 through the recovery pipeline 131, avoiding causing refrigerant loss.
[0042] When liquid refrigerant is trapped in the gas-liquid separator 113, the first control valve 1311 and the second control valve 1312 are controlled to be closed, and the third control valve 1351 is controlled to be opened, so that the recovery device 133 is disconnected and the liquid discharge bypass pipe 135 is connected. At this time, the liquid refrigerant trapped in the bottom space of the gas-liquid separator 113 can enter the recovery pipe 131, pass through the liquid discharge bypass pipe 135, and then flow into the compressor 112 through the recovery pipe 131.
[0043] Since the foreign matter flowing in the recovery pipe 131 has a large density, a large-diameter valve body is not required, and the first control valve 1311 and the second control valve 1312 can be selected as small-diameter types to save costs. Preferably, in the present embodiment, the first control valve 1311 and the second control valve 1312 are both solenoid valves, and the diameters are between 7 mm and 9 mm.
[0044] When the liquid discharge bypass pipe 135 transports the liquid refrigerant trapped in the gas-liquid separator 113 to the compressor 112, if too much liquid refrigerant flows into the compressor 112 in a short time, the compressor 112 will be damaged due to liquid compression. To prevent this from happening, the third control valve 1351 can be selected as a small-diameter type. Preferably, in the present embodiment, the third control valve 1351 is also a solenoid valve, and the diameter is between 3 mm and 5 mm.
[0045] In the present embodiment, the recovery device 133 has a containing cavity 1331 for containing foreign matter, and the containing cavity 1331 is in communication with the recovery pipe 131. The recovery device 133 and the gas-liquid separator 113 have the same principle of gravity separation. In other embodiments, the recovery device 133 can be a device with a separation principle such as a filtering function, and can be selected according to actual application conditions.
[0046] In the process of recovering foreign matter, the gaseous refrigerant in the refrigerant pipe 111 carries the foreign matter into the gas-liquid separator 113, and the foreign matter with a larger gravity sinks and accumulates in the bottom space of the gas-liquid separator 113. Under the action of pressure, the gaseous refrigerant flows out of the gas-liquid separator 113 from the top space of the gas-liquid separator 113, realizing the separation of foreign matter and refrigerant.
[0047] The foreign matter accumulated in the bottom space of the gas-liquid separator 113 enters the recovery system 130 through the recovery pipe 131 connected to the bottom of the gas-liquid separator 113, and then flows into the containing cavity 1331 of the recovery device 133. In this process, part of the excess refrigerant may enter the recovery device 133 together, and this part of the excess refrigerant is separated from the foreign matter in the gas-liquid separator 113, that is, the foreign matter accumulates in the bottom space of the containing cavity 1331, and the excess refrigerant flows out from the top space of the containing cavity 1331 and flows to the compressor 112.
[0048] In the embodiment, the recovery pipeline 131 comprises an input pipe section and an output pipe section, one end of the input pipe section is connected with the bottom of the gas-liquid separator 113, and the other end is connected with the top of the accommodating cavity 1331. One end of the output pipe section is connected with the top of the accommodating cavity 1331, and the other end is communicated with the input end of the compressor 112.
[0049] It can be understood that the first control valve 1311 is arranged on the input pipe section and is used for controlling the on-off of the input pipe section, and one end of the liquid discharge bypass pipe 135 is connected with the input pipe section. The second control valve 1312 is arranged on the output pipe section and is used for controlling the on-off of the output pipe section, and the other end of the liquid discharge bypass pipe 135 is connected with the output pipe section.
[0050] In the foreign matter recovery process, the foreign matter in the gas-liquid separator 113 enters the accommodating cavity 1331 of the recovery device 133 through the input pipe section, and the excess gaseous refrigerant entering the accommodating cavity 1331 together flows to the input end of the compressor 112 through the output pipe section. In the process of conveying the retained liquid refrigerant, the liquid refrigerant in the gas-liquid separator 113 flows into the liquid discharge bypass pipe 135 through the input pipe section, and then flows into the input end of the compressor 112 through the output pipe section after passing through the liquid discharge bypass pipe 135.
[0051] In summary, the air conditioner 100 provided by the embodiment is configured with the recovery system 130, which can recover the foreign matter in the refrigerant system 110 on the one hand, and prevent the compressor 112 from being damaged; on the other hand, the liquid refrigerant retained at the bottom of the gas-liquid separator 113 can be conveyed to the compressor 112, so as to ensure the stable performance of the air conditioner 100.
[0052] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be limited by the range defined in the claims.
Claims
1. An air conditioner, characterized in that, It includes a refrigerant system (110) and a recovery system (130). 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 (130) includes a recovery pipeline (131), a recovery device (133), and a drain bypass pipe (135). One end of the recovery pipeline (131) is connected to the bottom of the gas-liquid separator (113), and the other end is connected to the input end of the compressor (112). The recovery device (133) and the drain bypass pipe (135) are connected in parallel on the recovery pipeline (131). The recovery device (133) is used to recover foreign matter separated from the refrigerant by the gas-liquid separator (113). The drain bypass pipe (135) is used to transport the liquid refrigerant retained in the gas-liquid separator (113) to the compressor (112).
2. The air conditioner according to claim 1, characterized in that, A first control valve (1311) is provided on the recovery pipeline (131) between the gas-liquid separator (113) and the recovery device (133). The first control valve (1311) is used to control the opening and closing of the recovery pipeline (131) between the gas-liquid separator (113) and the recovery device (133). One end of the drain bypass pipe (135) is connected between the gas-liquid separator (113) and the first control valve (1311).
3. The air conditioner according to claim 2, characterized in that, The diameter of the first control valve (1311) is between 7 mm and 9 mm.
4. The air conditioner according to claim 1, characterized in that, A second control valve (1312) is provided on the recovery pipeline (131) between the recovery device (133) and the compressor (112). The second control valve (1312) is used to control the opening and closing of the recovery pipeline (131) between the recovery device (133) and the compressor (112). The other end of the drain bypass pipe (135) is connected between the second control valve (1312) and the compressor (112).
5. The air conditioner according to claim 4, characterized in that, The diameter of the second control valve (1312) is between 7 mm and 9 mm.
6. The air conditioner according to claim 1, characterized in that, A third control valve (1351) is provided on the drain bypass pipe (135), and the third control valve (1351) is used to control the opening and closing of the drain bypass pipe (135).
7. The air conditioner according to claim 6, characterized in that, The diameter of the third control valve (1351) is between 3mm and 5mm.
8. The air conditioner according to claim 1, characterized in that, The recycling device (133) has a receiving cavity (1331) for receiving foreign objects, and the receiving cavity (1331) is connected to the recycling pipeline (131).
9. The air conditioner according to claim 8, characterized in that, The recovery pipeline (131) includes an input pipe section and an output pipe section. One end of the input pipe section is connected to the bottom of the gas-liquid separator (113), and the other end is connected to the top of the accommodating cavity (1331). One end of the output pipe section is connected to the top of the accommodating cavity (1331), and the other end is connected to the input end of the compressor (112).
10. The air conditioner according to claim 1, characterized in that, The refrigerant system (110) also includes multiple indoor evaporators (115), which are connected in parallel on the refrigerant pipeline (111).