CN115875875A - Air conditioning system - Google Patents
Air conditioning system Download PDFInfo
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- CN115875875A CN115875875A CN202211709874.5A CN202211709874A CN115875875A CN 115875875 A CN115875875 A CN 115875875A CN 202211709874 A CN202211709874 A CN 202211709874A CN 115875875 A CN115875875 A CN 115875875A
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- oil
- conditioning system
- air conditioning
- lubricating oil
- refrigerant
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 54
- 239000010687 lubricating oil Substances 0.000 claims abstract description 79
- 239000003507 refrigerant Substances 0.000 claims abstract description 58
- 238000001914 filtration Methods 0.000 claims abstract description 56
- 239000003921 oil Substances 0.000 claims abstract description 53
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 46
- 239000011148 porous material Substances 0.000 claims description 13
- 238000013327 media filtration Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052802 copper Inorganic materials 0.000 abstract description 8
- 239000010949 copper Substances 0.000 abstract description 8
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000000926 separation method Methods 0.000 description 6
- 239000000725 suspension Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- -1 polyol ester Chemical class 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The embodiment of the disclosure discloses an air conditioning system, which relates to the technical field of air conditioners and is used for separating lubricating oil in a refrigerant and avoiding the lubricating oil from being attached to the inner walls of copper pipes of a condenser and an evaporator. This air conditioning system includes: the system comprises a compressor, an oil-gas separator, a condenser and an evaporator. The compressor compresses a refrigerant and discharges the refrigerant mixed with a lubricating oil. The oil-gas separator is provided with a gas inlet and a gas outlet, and the gas inlet is connected with the compressor. The condenser is connected with the air outlet. The evaporator is respectively connected with the condenser and the compressor. Wherein, oil and gas separator includes: a reverse osmosis filtration device and a porous medium filtration device. The reverse osmosis filter device is arranged between the air inlet and the air outlet. The reverse osmosis filtering device is used for separating the refrigerant. The porous medium filtering device is arranged between the air inlet and the reverse osmosis filtering device. The porous medium filtering device is used for adsorbing lubricating oil. The air conditioning system provided by the embodiment of the disclosure is used for conditioning air.
Description
Technical Field
The present disclosure relates to the field of air conditioning technology, and more particularly, to an air conditioning system.
Background
During operation of the air conditioning system, the compressor needs to be lubricated. In the existing air conditioning system, lubricating oil for lubricating a compressor and a refrigerant are mixed together and circulate in the whole air conditioning system, so that the lubricating oil is attached to the inner walls of copper pipes of a condenser and an evaporator, and the normal work of the air conditioning system is influenced.
Disclosure of Invention
The purpose of the disclosed embodiment is to provide an air conditioning system, which is used for separating lubricating oil in a refrigerant and preventing the lubricating oil from adhering to the inner walls of copper pipes of a condenser and an evaporator.
In order to achieve the above purpose, the embodiments of the present disclosure provide the following technical solutions:
in one aspect, an air conditioning system is provided. The air conditioning system includes: the system comprises a compressor, an oil-gas separator, a condenser and an evaporator. The compressor compresses a refrigerant and discharges the refrigerant mixed with a lubricating oil. The oil-gas separator is provided with a gas inlet and a gas outlet, and the gas inlet is connected with the compressor. The condenser is connected with the air outlet. The evaporator is respectively connected with the condenser and the compressor. Wherein the oil separator includes: a reverse osmosis filtration device and a porous medium filtration device. The reverse osmosis filter device is arranged between the air inlet and the air outlet. The reverse osmosis filtering device is used for separating the refrigerant. A porous media filter is disposed between the air inlet and the reverse osmosis filter. The porous medium filtering device is used for adsorbing the lubricating oil.
Some embodiments of the present disclosure provide an air conditioning system, in which the oil-gas separator is disposed between the compressor and the condenser, the reverse osmosis filtering device and the porous medium filtering device are disposed in the oil-gas separator, and the reverse osmosis filtering device is disposed between the air inlet and the air outlet, and the porous medium filtering device is disposed between the air inlet and the reverse osmosis filtering device, so that the porous medium filtering device can adsorb lubricating oil in the refrigerant mixed with the lubricating oil discharged from the compressor in advance, and the reverse osmosis filtering device can separate the refrigerant, thereby reducing the content of the lubricating oil in the refrigerant discharged from the air outlet of the oil-gas separator, and preventing the lubricating oil from circulating in the air conditioning system and adhering to the inner walls of copper pipes of the condenser and the evaporator. And the porous medium filtering device can also reduce the accumulation of lubricating oil on the reverse osmosis filtering device, and avoid the separation effect of the reverse osmosis filtering device from being influenced by too much lubricating oil.
In some embodiments, the filtration diameter D of the reverse osmosis filtration device 1 Satisfies the following conditions: d 2 ＜D 1 ＜D 3 ，D 2 Is the molecular diameter of the refrigerant, D 3 Is the molecular diameter of the lubricating oil.
In some embodiments, the reverse osmosis filter device is tubular and is sleeved on the porous medium filter device.
In some embodiments, the pore size D of the filtration pores of the porous media filtration device 4 Satisfies the following conditions: d 1 ＜D 4 ＜D 3 。
In some embodiments, the porous media filter device has a plurality of filter pores, the plurality of filter pores being arranged in a plurality of layers.
In some embodiments, the filtering holes of two adjacent layers are staggered.
In some embodiments, the porous media filtration device has a cavity in communication with the air inlet.
In some embodiments, the oil separator further has an oil drain located below the oil separator, the oil drain communicating with the cavity.
In some embodiments, the compressor has a lubricant inlet. The air conditioning system further includes: and the first end of the oil return pipe is communicated with the oil outlet, and the second end of the oil return pipe is communicated with the lubricating oil inlet.
In some embodiments, the oil return tube has a bend for storing lubricating oil.
Drawings
In order to more clearly illustrate the technical solutions in the present disclosure, the drawings needed to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art according to the drawings. Furthermore, the drawings in the following description may be regarded as schematic and are not intended to limit the actual size or the like of products to which embodiments of the present disclosure relate.
FIG. 1 is a schematic view of an air conditioning system according to some embodiments of the present disclosure;
FIG. 2 is a block diagram of an oil separator according to some embodiments of the present disclosure;
fig. 3 is a cross-sectional view of the oil separator shown in fig. 2 in a MM direction.
Detailed Description
Technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided by the present disclosure belong to the protection scope of the present disclosure.
Throughout the specification and claims, the term "comprising" is to be interpreted in an open, inclusive sense, i.e., as "including, but not limited to," unless the context requires otherwise. In the description of the specification, the terms "one embodiment," "some embodiments," "example" or "some examples," etc., are intended to indicate 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 disclosure. The schematic representations of the terms used above are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless otherwise specified.
Additionally, the use of "based on" means open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may in practice be based on additional conditions or values beyond those stated.
Example embodiments are described herein with reference to cross-sectional and/or plan views as idealized example figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the exemplary embodiments.
As shown in fig. 1, some embodiments of the present disclosure provide an air conditioning system 100. The air conditioning system 100 includes a compressor 1, an oil separator 2, a condenser 3, and an evaporator 4.
The above components are communicated with each other through pipelines. As shown in fig. 1, the compressor 1 is communicated with the gas-oil separator 2 through a first pipeline G1, the gas-oil separator 2 is communicated with the condenser 3 through a second pipeline G2, the condenser 3 is communicated with the evaporator 4 through a third pipeline G3, and the evaporator 4 is communicated with the compressor 1 through a fourth pipeline G4.
In the air conditioning system 100, during a cooling process, the compressor 1 is used for compressing the refrigerant and making the refrigerant flow in the air conditioning system 100, the temperature of the refrigerant is high after the compressor 1 compresses the refrigerant, and after the refrigerant flows into the condenser 3, the condenser 3 can exchange heat between the flowing refrigerant and air to reduce the temperature of the refrigerant. The refrigerant having the lowered temperature then flows into the evaporator 4, and the evaporator 4 evaporates the refrigerant at a low pressure, turns into vapor and absorbs heat, thereby achieving the purpose of refrigeration.
Illustratively, as shown in fig. 1, the air conditioning system 100 further includes an expansion valve 5, the expansion valve 5 is installed between the condenser 3 and the evaporator 4, and the expansion valve 5 has functions of throttling and controlling the flow of the refrigerant, so as to achieve better cooling effect of the refrigerant.
In some examples, the compressor 1 can discharge the refrigerant mixed with the lubricating oil after compressing the refrigerant.
The compressor 1 may be of the type exemplified by a rotary compressor, a scroll compressor, etc.
Illustratively, the refrigerant may be freon or the like.
Illustratively, the lubricating oil is used for lubricating the compressor 1, which can reduce the wear of the compressor 1 and reduce the noise of the compressor 1.
For example, lubricating oils may include mineral oils and polyol ester (POE) oils.
In one implementation, in order to ensure that the lubricating oil can circulate in the whole air conditioning system along with the refrigerant and avoid the lubricating oil from adhering to the inner walls of copper pipes of a condenser and an evaporator, an oil return bend needs to be added to the air conditioning system or the flow rate of the refrigerant is increased by reducing the pipe diameter of a connecting pipe, but the arrangement increases the load of a compressor, and causes the pressure drop and the temperature loss of the refrigerant in a pipeline to be large, so that the energy efficiency of the air conditioning system is low. In an application scene that the connecting pipe is long, the pipe diameter needs to be increased due to overlarge pipeline resistance, but the pipe diameter is overlarge to cause an oil return problem, in order to balance the contradiction between the pipeline resistance and the large flow rate needed by oil return, the length of the connecting pipe needs to be controlled within 100m, and the application scene of an air conditioning system is greatly influenced.
In another implementation, oil-free operation is achieved by changing the compressor in the air conditioning system to a compressor that does not require lubrication oil, such as an oil-free air suspension or magnetic suspension compressor, which is difficult and expensive to miniaturize.
Based on this, as shown in fig. 1, in the gas-oil separator 2 in some embodiments of the present disclosure, the gas-oil separator 2 has a gas inlet 2A and a gas outlet 2B, and the gas inlet 2A is connected to the compressor 1. The condenser 3 is connected to the gas outlet 2B.
Illustratively, the air inlet 2A is disposed near the upper side of the gas-oil separator 2, the refrigerant mixed with the lubricating oil discharged from the compressor 1 enters the gas-oil separator 2 through the air inlet 2A, and the refrigerant flows out of the air outlet 2B and then enters the condenser 3.
In some examples, as shown in fig. 2 and 3, the oil separator 2 includes: a reverse osmosis filtration unit 21 and a porous media filtration unit 22. The reverse osmosis filtration device 21 is provided between the air inlet port 2A and the air outlet port 2B. The reverse osmosis filtration device 21 is used to separate the refrigerant. The porous medium filtration device 22 is disposed between the air inlet 2A and the reverse osmosis filtration device 21. The porous media filter device 22 is used to adsorb lubricating oil.
Through the arrangement, after the refrigerant mixed with the lubricating oil enters the oil-gas separator 2, the porous medium filtering device 22 can adsorb the lubricating oil in the refrigerant mixed with the lubricating oil discharged from the compressor 1 in advance, and the reverse osmosis filtering device 21 can separate the refrigerant, so that the content of the lubricating oil in the refrigerant discharged from the air outlet 2B of the oil-gas separator 2 can be reduced, and the lubricating oil can be prevented from circulating in the air conditioning system 100 and adhering to the inner walls of copper pipes of the condenser 3 and the evaporator 4. And the porous medium filter device 22 can also reduce the accumulation of the lubricating oil on the reverse osmosis filter device 21, and avoid the lubricating oil from influencing the separation effect of the reverse osmosis filter device 21 too much.
Therefore, some embodiments of the present disclosure provide an air conditioning system 100, in which the gas-oil separator 2 is disposed between the compressor 1 and the condenser 3, and by disposing the reverse osmosis filter device 21 and the porous medium filter device 22 in the gas-oil separator 2, and disposing the reverse osmosis filter device 21 between the air inlet 2A and the air outlet 2B, and disposing the porous medium filter device 22 between the air inlet 2A and the reverse osmosis filter device 21, the porous medium filter device 22 can adsorb lubricating oil in the refrigerant mixed with the lubricating oil discharged from the compressor 1 in advance, and the reverse osmosis filter device 21 can separate the refrigerant, so that the content of the lubricating oil in the refrigerant discharged from the air outlet 2B of the gas-oil separator 2 can be reduced, and the lubricating oil can be prevented from circulating in the air conditioning system 100 and adhering to the inner walls of the copper pipes of the condenser 3 and the evaporator 4. And the porous medium filter device 22 can also reduce the accumulation of the lubricating oil on the reverse osmosis filter device 21, and avoid the lubricating oil from influencing the separation effect of the reverse osmosis filter device 21 too much.
Compared with the above implementation manner, the air conditioning system 100 of the present disclosure may avoid increasing the flow rate of the refrigerant, thereby avoiding increasing the load of the compressor 1 and avoiding a lower energy efficiency of the air conditioning system 100. In addition, the air conditioning system 100 of the present disclosure may employ a common compressor 1 without using an expensive air suspension or magnetic suspension compressor, which is advantageous to reduce the production cost of the air conditioning system 100 compared to another implementation.
In some embodiments, the filtration diameter D of the reverse osmosis filtration device 21 1 Satisfies the following conditions: d 2 ＜D 1 ＜D 3 ，D 2 Is the molecular diameter of the refrigerant, D 3 Is the molecular diameter of the lubricating oil.
Exemplary, molecular diameter D of the refrigerant 2 Less than 3nm, molecular diameter D of lubricating oil 3 Greater than 10nm, the filtration diameter D of the reverse osmosis filtration device 21 1 The value ranges of (a) may be: 3nm to 5nm, e.g. the filtration diameter D of the reverse osmosis filter 21 1 The value of (B) may be 3nm, 4nm, 5nm, or the like.
With the above arrangement, refrigerant molecules can permeate the reverse osmosis filtration device 21 and flow to the condenser 3 through the air outlet 2B, thereby circulating in the air conditioning system 100. And because the molecular diameter of the lubricating oil is larger, the lubricating oil molecules are difficult to permeate the reverse osmosis filtering device 21, so that the separation of refrigerant molecules and lubricating oil molecules is realized, the content of the lubricating oil in the refrigerant gas discharged from the oil-gas separator 2 is less, and the lubricating oil can be prevented from circulating in the air conditioning system 100 and being attached to the inner walls of copper pipes of the condenser 3 and the evaporator 4.
In this case, since the influence of the lubricant oil is small, the pipe diameter of the connection pipe between the oil separator 2 and the condenser 3 can be enlarged, and the pressure drop of the indoor and outdoor connection pipes can be reduced, thereby reducing the pressure loss in the air conditioning system 100, facilitating the solution of the problem of the efficiency reduction of the air conditioning system, and the application problem of the long connection pipe between the compressor 1 and the condenser 3.
The inventor of the present disclosure has verified the effect of the air conditioning system of the present disclosure, and in a place where the length of the indoor and outdoor connecting pipeline (approximately the distance between the compressor 1 and the condenser 3) exceeds 30 meters, the air conditioning system 100 using the oil-gas separator 2 can ensure that the flow rate of the refrigerant is lower than 1m/s by increasing the pipe diameter of the indoor and outdoor connecting pipeline, ensure that the total pressure drop of the indoor and outdoor connecting pipelines is less than 20kpa, and save energy by 35% all the year around.
In some embodiments, referring to fig. 2 and 3, the reverse osmosis filtration device 21 is tubular and fits over the porous media filtration device 22.
Illustratively, the porous media filter 22 is in contact with a surface of the reverse osmosis filter 21. The porous medium filter 22 thus protects the surface of the reverse osmosis filter 21 from the lubricating oil directly contacting the surface of the reverse osmosis filter 21.
Through the above arrangement, the porous medium filter device 22 can prevent the lubricating oil from accumulating on the surface of the reverse osmosis filter device 21 after adsorbing the lubricating oil, and prevent the lubricating oil from excessively influencing the separation effect of the reverse osmosis filter device 21.
In some embodiments, the pore size D of the filtration pores of the porous media filtration device 22 4 Satisfies the following conditions: d 1 ＜D 4 ＜D 3 。
Exemplary, the pore size D of the filtration pores of the porous media filtration device 22 4 The value range of (A) can be 5 nm-10 nm. For example, the pore diameter D of the filtration pores 4 May be 5nm, 8nm, 10nm, etc.
Thus, the lubricating oil can be well adsorbed under the condition that refrigerant molecules smoothly pass through.
In some embodiments, the porous media filter device 22 has a plurality of filter pores arranged in a plurality of layers.
Illustratively, the structure of the porous media filter 22 is a sponge-like structure, with the porous media filter 22 having dense filter pores.
Through the arrangement, the contact area of the porous medium filtering device 22 and the refrigerant mixed with the lubricating oil can be increased, and the adsorption effect of the porous medium filtering device 22 on the lubricating oil can be further enhanced.
In some embodiments, the filtering holes of two adjacent layers are staggered.
Through the above arrangement, the path of the refrigerant mixed with the lubricating oil passing through the porous medium filter device 22 can be effectively prolonged, the flow speed of the refrigerant mixed with the lubricating oil in the porous medium filter device 22 can be reduced, and the adsorption effect of the porous medium filter device 22 on the lubricating oil can be enhanced.
In some embodiments, as shown in FIG. 3, the porous media filter device 22 has a cavity Q that communicates with the inlet port 2A.
Illustratively, the porous media filter arrangement 22 may be tubular in shape.
The cavity Q can provide a temporary storage space for the refrigerant mixed with the lubricating oil, is favorable for reducing the flow velocity of the refrigerant mixed with the lubricating oil in the oil-gas separator 2, and increases the contact area between the refrigerant mixed with the lubricating oil and the porous medium filter device 22, so that the adsorption effect of the porous medium filter device 22 on the lubricating oil can be enhanced.
In some embodiments, as shown in fig. 3, the oil separator 2 further has an oil discharge port 2C, the oil discharge port 2C is located below the oil separator 2, and the oil discharge port 2C communicates with the cavity Q.
After the porous medium filter device 22 adsorbs the lubricating oil, the lubricating oil accumulates on the porous medium filter device 22 and flows under the action of gravity to the lower side of the gas-oil separator 2. By arranging the oil discharge port 2C, the lubricating oil in the oil-gas separator 2 can be discharged, and the phenomenon that the lubricating oil excessively blocks the cavity Q of the oil-gas separator 2 to influence the separation effect of the reverse osmosis filter device 21 is avoided.
In some embodiments, as shown in fig. 1, the compressor 1 has a lubricant inlet 1A. The air conditioning system 100 further includes: return oil pipe 6, return oil pipe 6's first end and oil drain port 2C intercommunication, return oil pipe 6's second end and lubricating oil inlet 1A intercommunication.
Through the arrangement, the lubricating oil adsorbed by the porous medium filter device 22 can reenter the compressor 1 for lubrication through the oil return pipe 6, so that the lubricating oil can be recycled between the compressor 1 and the oil-gas separator 2, the lubricating effect of the lubricating oil on the compressor 1 can be ensured, and the loss of the lubricating oil is reduced.
In some embodiments, as shown in fig. 1, the oil return pipe 6 has a bent portion for storing the lubricating oil.
Through setting up the kink, partly lubricating oil can be stored in the kink to can make oil return pipe 6 can store more lubricating oil, can avoid the working process of compressor 1 exhaust lubricating oil too much, and lead to not having enough lubricating oil to take place for compressor 1 lubricates the condition.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art will appreciate that changes or substitutions within the technical scope of the present disclosure are included in the scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.
Claims (10)
1. An air conditioning system, characterized in that the air conditioning system comprises:
a compressor for compressing a refrigerant and discharging the refrigerant mixed with a lubricating oil;
the oil-gas separator is provided with a gas inlet and a gas outlet, and the gas inlet is connected with the compressor;
the condenser is connected with the air outlet; and a (C) and (D) and,
the evaporator is respectively connected with the condenser and the compressor;
wherein the oil separator includes:
the reverse osmosis filtering device is arranged between the air inlet and the air outlet; the reverse osmosis filtering device is used for separating the refrigerant; and a process for the preparation of a coating,
a porous media filtration device disposed between the air inlet and the reverse osmosis filtration device; the porous medium filter device is used for adsorbing the lubricating oil.
2. Air conditioning system according to claim 1, characterized in that the filtration diameter D of the reverse osmosis filtration device 1 Satisfies the following conditions: d 2 ＜D 1 ＜D 3 ，D 2 Is the molecular diameter of the refrigerant, D 3 Is the molecular diameter of the lubricating oil.
3. The air conditioning system as claimed in claim 2, wherein the reverse osmosis filter device is tubular and is fitted over the porous medium filter device.
4. Air conditioning system according to claim 2 or 3,
the aperture D of the filtering pores of the porous medium filtering device 4 Satisfies the following conditions: d 1 ＜D 4 ＜D 3 。
5. The air conditioning system as claimed in claim 4, wherein the porous medium filtering means has a plurality of filtering holes, and the plurality of filtering holes are arranged in a plurality of layers.
6. The air conditioning system as claimed in claim 5, wherein the filtering holes of two adjacent layers are staggered.
7. An air conditioning system as claimed in any one of claims 1 to 3, wherein the porous media filter has a cavity communicating with the air inlet.
8. The air conditioning system of claim 7, wherein the oil separator further has an oil drain port located below the oil separator, the oil drain port communicating with the cavity.
9. The air conditioning system of claim 8, wherein the compressor has a lubricant inlet;
the air conditioning system further includes: and the first end of the oil return pipe is communicated with the oil outlet, and the second end of the oil return pipe is communicated with the lubricating oil inlet.
10. The air conditioning system of claim 9, wherein the oil return tube has a bend for storing lubricating oil.
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| CN202211709874.5A CN115875875A (en) | 2022-12-29 | 2022-12-29 | Air conditioning system |
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| CN202211709874.5A CN115875875A (en) | 2022-12-29 | 2022-12-29 | Air conditioning system |
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| JP2021065858A (en) * | 2019-10-25 | 2021-04-30 | 三菱マテリアル電子化成株式会社 | Oil-water separation filtration filter and oil-water separation filtration cartridge |
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| CN217274991U (en) * | 2022-04-22 | 2022-08-23 | 广东美的暖通设备有限公司 | Oil-gas separation device and air conditioner |
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