Oil separators, condensers and air conditioners for air conditioning

Abstract

The present invention relates to an oil separator for air conditioner, a condenser and an air conditioner. The oil separator for air conditioner is characterized by comprising an air inlet (2) for introducing a refrigerant to be separated, an air outlet for outputting the separated refrigerant and a filter component (3) arranged at the air outlet, wherein the filter component (3) comprises: a first filter area (31); a second filter area (32) closer to the air inlet (2) than the first filter area (31); a third filter area (33) closer to the air inlet (2) than the second filter area (32), and wherein the separation efficiency of the first filter area (31) for the refrigerant is lower than that of the second filter area (2); and / or the separation efficiency of the third filter area (33) for the refrigerant is lower than that of the second filter area. In the present application, corresponding filter areas are set according to the air flow pressure at different positions, which improves the problem of waste caused by the excess performance of the filter component and is also beneficial to the uniformity of the outlet pressure of different areas of the outlet.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to an oil separator for air conditioning, a condenser and an air conditioner. Background Art

[0002] With the development of air-conditioning condenser units, in order to simplify the external connection pipelines of the units and beautify the appearance of the units, many condenser units have cancelled the external independent oil separators and set the components with oil and gas separation function at the top of the condenser shell to make full use of the top space of the condenser shell.

[0003] Figure 1 The schematic diagram of the structure of the existing condenser is shown in FIG. Figure 1 As shown, the existing air conditioner condenser includes a shell 1, an inlet 2 and an outlet 3 provided on the shell 1, and the inlet 2 and the outlet 3 are both provided at the first end of the shell 1. The condenser also includes a first pipeline and a second pipeline provided in the shell 1, the first end of the first pipeline is connected to the inlet 2, the first end of the second pipeline is connected to the outlet, and the second end of the second pipeline is connected to the second end of the first pipeline.

[0004] A support plate 5 for supporting the first pipeline and the second pipeline is also provided in the shell 1. The support plate 5 is provided with a first hole adapted to the first pipeline and a second hole adapted to the second pipeline. The first pipeline is passed through the first hole, and the second pipeline is passed through the second hole.

[0005] There are multiple first pipelines, and the first ends of the multiple first pipelines are all connected to the inlet 2. There are multiple second pipelines, and the first ends of the multiple second pipelines are all connected to the outlet 3.

[0006] An oil separator 4 is also provided in the shell 1 , and the oil separator 4 is located at the top of the condenser shell 1 .

[0007] Figure 2 FIG. 2 shows a schematic diagram of the structure of an existing oil separator. Figure 2 As shown, the oil separator includes a chamber, and the chamber is provided with an air inlet 7 for introducing the refrigerant to be separated and an air outlet 6 for outputting the separated refrigerant. The air inlet 7 and the air outlet 6 are arranged on the same side of the chamber. Preferably, the air inlet 7 and the air outlet 6 are both arranged at the upper end of the chamber.

[0008] The exhaust port of the compressor is connected to the air inlet 7 of the oil separator 4. The refrigerant separated by the oil separator 4 is discharged from the air outlet 6 into the inner cavity of the shell 1 of the condenser and exchanges heat with the medium in the first pipeline and the second pipeline.

[0009] like Figure 2 As shown, the width of the chamber gradually decreases in the direction away from the air outlet 6, and an oil drain port 9 is provided at one end of the chamber away from the air outlet 6 for discharging the oil separated from the refrigerant.

[0010] After the refrigerant enters the chamber through the air inlet 7, it changes its flow direction and finally flows out of the chamber of the oil separator 4 through the air outlet 6. During the process of changing the flow direction of the refrigerant, the oil is separated from the refrigerant under the action of inertia. In order to further improve the separation efficiency of the oil separator 4, a filter component 8 is provided at the air outlet 6 to further separate the oil from the refrigerant.

[0011] The pressure of the air flow in each area with different distances from the air outlet 6 to the air inlet 7 is also different. In order to ensure that the separation efficiency of the refrigerant output from each area of ​​the air outlet 6 can reach the predetermined effect, the filtering performance of the filter component 8 is designed according to the requirements of the maximum air flow pressure. Therefore, the performance of the filter component 8 in the area with lower air flow pressure causes unnecessary waste, and the filter component in this area creates unnecessary resistance to the air flow. Therefore, the single-performance filter component 8 provided at the outlet of the oil separator 4 is an unnecessary waste for the area with lower air flow pressure, and also causes air flow obstruction in the area with lower air flow pressure. Summary of the invention

[0012] The present invention aims to provide an oil separator for air conditioning, a condenser and an air conditioner, so as to improve the problem that a single-performance filter component in the prior art is not suitable for requirements of areas with different distances from an inlet.

[0013] According to one aspect of an embodiment of the present invention, the present invention provides an air conditioner oil separator, the air conditioner oil separator comprising an air inlet for introducing a refrigerant to be separated, an air outlet for outputting the separated refrigerant, and a filter component provided at the air outlet, the filter component comprising:

[0014] First filter zone;

[0015] a second filter zone, closer to the air inlet than the first filter zone;

[0016] a third filter zone, closer to the air inlet than the second filter zone, and

[0017] The first filter zone has a lower refrigerant separation efficiency than the second filter zone; and / or the third filter zone has a lower refrigerant separation efficiency than the second filter zone.

[0018] Optionally, the third filter zone has a greater refrigerant separation efficiency than the first filter zone.

[0019] Optionally,

[0020] The thickness or density of the filter element of the second filter zone is greater than that of the filter element of the first filter zone;

[0021] The thickness or density of the filter element of the second filter zone is greater than the filter element of the third filter zone; and

[0022] The thickness or density of the filter element of the third filter zone is greater than that of the filter element of the first filter zone.

[0023] Optionally,

[0024] The second filter area is made of a different material from the first filter area, so that the separation efficiency of the second filter area is greater than that of the first filter area;

[0025] The second filter area and the third filter area are made of different materials, so that the separation efficiency of the second filter area is greater than that of the third filter area;

[0026] The third filter area is made of a different material from the first filter area, so that the separation efficiency of the third filter area is greater than that of the first filter area.

[0027] Optionally, the air outlet includes a first air outlet and a second air outlet respectively located on both sides of the air inlet.

[0028] Optionally, the air inlet and the air outlet are both arranged on the top of the air-conditioning oil separator.

[0029] Optionally, the first filter area, the second filter area and the third filter area are arranged side by side in a direction close to the air inlet.

[0030] According to another aspect of the present application, a condenser is provided, the condenser comprising:

[0031] case;

[0032] The above-mentioned air conditioner oil separator is arranged in the shell, and the air outlet is communicated with the inner cavity of the shell; and

[0033] The pipeline is arranged in the shell and is used for circulating the medium for heat exchange with the refrigerant discharged from the filter area.

[0034] Optionally, the pipeline includes:

[0035] A first pipeline, a first end of which is used to introduce a medium for exchanging heat with the refrigerant; and

[0036] The second pipeline has a first end for outputting the medium after heat exchange with the refrigerant, and a second end of the second pipeline is connected to the second end of the first pipeline.

[0037] Optionally, the first pipeline and the second pipeline are respectively arranged on both sides of the air conditioner oil separator.

[0038] According to another aspect of the present application, an air conditioner is provided, the air conditioner comprising:

[0039] a compressor having an exhaust port for discharging compressed refrigerant; and

[0040] The air inlet of the above-mentioned air conditioner oil separator is connected with the exhaust port of the compressor.

[0041] By applying the technical solution of the present application, corresponding filter areas are set according to the air flow pressure at different positions, which improves the waste problem caused by excess performance of the filter components in the prior art and is also beneficial for making the air outlet pressure in different areas of the air outlet uniform.

[0042] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0044] Figure 1 A schematic structural diagram of a condenser of an air conditioner in the prior art is shown;

[0045] Figure 2 A schematic diagram showing the structure of an oil separator in a condenser of an air conditioner in the prior art is shown;

[0046] Figure 3 A schematic structural diagram of an oil separator for an air conditioner according to an embodiment of the present invention is shown;

[0047] Figure 4 Shows Figure 3 A partial enlarged view of . DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Figure 3 The schematic diagram of the structure of the oil separator for air conditioner in this embodiment is shown. Figure 4 A partial enlarged view of the oil separator for the air conditioner of this embodiment is shown.

[0050] Combination Figure 3 and 4As shown, the air conditioner oil separator of this embodiment includes a chamber 1 and an air inlet 2 and an air outlet arranged on the chamber 1. The air inlet 2 and the air outlet are arranged on the same side of the chamber 1. The air outlet is provided with a filter component 3, and the filter component 3 is used to filter the oil mixed in the refrigerant.

[0051] The air outlet extends along the length direction of the oil separator. Preferably, the air outlet includes a first air outlet and a second air outlet respectively arranged on both sides of the air inlet 2 to shorten the length of each air outlet, thereby reducing the air flow pressure difference between the two air outlets.

[0052] The air conditioner oil separator also includes a baffle 4 disposed in the chamber 1, the baffle 4 is opposite to the air inlet 2, and the refrigerant to be separated first collides with the baffle 4 after entering the chamber 1 from the air inlet 2. After the refrigerant to be separated collides with the baffle 4, the oil and gaseous refrigerant are separated for the first time due to the different inertia of the oil and gaseous refrigerant.

[0053] After the first separation, the refrigerant mixed with a small amount of oil moves toward both sides of the air inlet 2, then enters the condenser after being filtered by the filter component 3, and exchanges heat with other media in the condenser.

[0054] Due to the inertia of the air flow, the pressure of the air flow in each area of ​​the chamber 1 in the direction away from the air inlet 2 is different. If a filter component 3 with a single performance is used, since the pressure of the air flow passing through each area of ​​the filter component 3 is different, the pressure of the air flow after passing through the filter component 3 is also uneven.

[0055] In this embodiment, the performance of the filter component 3 refers to the separation efficiency of the filter component, that is, the ratio of the oil content of the refrigerant before and after passing through the filter component 3. Generally speaking, the thicker the filter component 3 is, the higher the separation efficiency is, and the corresponding resistance to the refrigerant is greater; the greater the density of the filter component 3 is, the higher the separation efficiency is, and the corresponding resistance to the refrigerant is greater. Of course, the separation efficiency of the filter component 3 is also related to the material of the filter component 3.

[0056] In order to ensure that the filtering effect of the filter component 3 on the refrigerant at any position can meet the predetermined requirements, the performance of the single-performance filter component 3 is often designed according to the highest requirements. The better the filtering performance of the filter component 3, the greater the resistance to the refrigerant airflow. Therefore, the resistance of the filter component 3 to the refrigerant in the area with lower airflow pressure is too large.

[0057] In order to solve the above problems, the filter component 3 of this embodiment includes a first filter area 31, a second filter area 32 and a third filter area 33 which are sequentially arranged in a direction close to the air inlet 2. Among them, the third filter area 33 is adjacent to the air inlet 2. The third filter area 33 is also the filter area closest to the air inlet 2 among the multiple filter areas.

[0058] Among them, near the air inlet 2, most of the refrigerant flows in the direction away from the air inlet 2, and the rest of the refrigerant flows out of the oil separator through the third filter area 33. As it moves away from the air inlet 2, more refrigerant flows out of the oil separator from the second filter area 33, so the air flow pressure of the refrigerant at the third filter area 33 is less than the air flow pressure of the refrigerant at the second filter area 32. As it moves away from the air inlet 2, the air flow pressure of the refrigerant also becomes smaller and smaller, so the air flow pressure of the refrigerant at the first filter area 31 is less than the air flow pressure at the second filter area 32.

[0059] In order to make the separation efficiency of each filter zone adapt to the air flow pressure of the refrigerant, in this embodiment, the separation efficiency of the first filter zone 31 for the refrigerant is lower than that of the second filter zone 32; the separation efficiency of the third filter zone 33 for the refrigerant is lower than that of the second filter zone 32.

[0060] Furthermore, the refrigerant separation efficiency of the third filter zone 33 is greater than that of the first filter zone 31 .

[0061] In this embodiment, a filter component with corresponding performance is set according to the air flow pressure in each area along the direction away from the air inlet 2, so that the performance of the filter component can be fully utilized, which is also beneficial to ensure the uniformity of the air flow pressure output from each area of ​​the air outlet.

[0062] like Figure 4 As shown, in this embodiment, the air outlet with a length of L is divided into a first filter area 31, a second filter area 32 and a third filter area 33. The size of the first filter area 31, the second filter area 32 and the third filter area 33 in the direction away from the air inlet 2 is 1 / 3L.

[0063] The thickness and material of the filter components of the first filter area 31, the second filter area 32 and the third filter area 33 are the same, and the density of the filter components of the first filter area 31, the second filter area 32 and the third filter area 33 are respectively H 1 , H 2 and H 3 The separation efficiencies of the first filter zone 31, the second filter zone 32 and the third filter zone 33 are E 1 、E 2 and E 3 , where H 2 >H 3 >H 1 ,E 2 >E 3 >E 1A filter component with a material having a better separation efficiency or a higher density is set at a position where the airflow impact is greater or closer to the air inlet 2, and a filter component with a material having a slightly lower separation efficiency or a lower density is set at a position where the airflow impact is less or farther from the air inlet. This achieves the purpose of improving the uniform distribution of the airflow and reducing the pressure drop.

[0064] It is also preferred that the filter components of the first filter area 31, the second filter area 32 and the third filter area 33 have the same thickness but different materials, so that E 2 >E 3 >E 1 .

[0065] It is also preferred that the density and material of the filter components of the first filter area 31, the second filter area 32 and the third filter area 33 are the same, but the thickness is different, so that E 2 >E 3 >E 1 .

[0066] In this embodiment, the width of the chamber 1 gradually decreases in the direction away from the filtering area 3, and an oil drain hole is provided at one end of the chamber 1 away from the filtering component 3. The filtering component 3 is arranged on the top surface of the chamber 1, and the oil separated by the oil separator is collected at the bottom end of the chamber 1, and the collected oil is discharged through the oil drain hole.

[0067] According to another aspect of the present application, this embodiment also provides a condenser, which includes a shell and the above-mentioned air-conditioning oil separator, the air-conditioning oil separator is arranged in the shell, and a pipeline for circulating heat exchange medium is also provided in the shell. The refrigerant discharged from the oil separator flows into the inner cavity of the shell and exchanges heat with the heat exchange medium in the pipeline.

[0068] The above-mentioned pipeline includes a first pipeline and a second pipeline. The first end of the first pipeline is used to introduce a medium for heat exchange with the refrigerant, the second end of the second pipeline is used to output the medium after heat exchange with the refrigerant, and the second end of the first pipeline is connected to the second end of the second pipeline.

[0069] There are multiple first pipelines and multiple second pipelines. The first end of the condenser shell is provided with a medium inlet and a medium outlet. The first ends of the multiple first pipelines are connected to the medium inlet, and the second ends of the multiple second pipelines are connected to the medium outlet.

[0070] Optionally, the first pipeline and the second pipeline are respectively arranged on both sides of the air conditioner oil separator.

[0071] According to another aspect of the present application, this embodiment further provides an air conditioner, which includes a compressor and the above-mentioned condenser, and the exhaust port of the compressor is connected to the air inlet 2 of the air-conditioning oil separator.

[0072] The above description is only an exemplary embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil separator for air conditioning, characterized in that: The invention comprises an air inlet (2) for introducing a refrigerant to be separated, an air outlet for outputting the separated refrigerant, and a filter component (3) arranged at the air outlet, wherein the filter component (3) comprises: A first filtering zone (31); a second filter area (32) which is closer to the air inlet (2) than the first filter area (31); a third filter area (33) which is closer to the air inlet (2) than the second filter area (32), and The first filter zone (31) has a lower separation efficiency for the refrigerant than the second filter zone (32); and the third filter zone (33) has a lower separation efficiency for the refrigerant than the second filter zone (32), and the third filter zone (33) has a higher separation efficiency for the refrigerant than the first filter zone (31).

2. The oil separator for air conditioning according to claim 1, characterized in that: The thickness or density of the filter component of the second filter area (32) is greater than that of the filter component of the first filter area (31); The thickness or density of the filter element of the second filter area (32) is greater than that of the filter element of the third filter area (33); and The thickness or density of the filter component of the third filter area (33) is greater than that of the filter component of the first filter area (31).

3. The oil separator for air conditioning according to claim 1, characterized in that: The second filter area (32) and the first filter area (31) are made of different materials, so that the separation efficiency of the second filter area (32) is greater than that of the first filter area (31); The second filter area (32) and the third filter area (33) are made of different materials, so that the separation efficiency of the second filter area (32) is greater than that of the third filter area (33); The third filter area (33) is made of a different material from the first filter area (31), so that the separation efficiency of the third filter area (33) is greater than that of the first filter area (31).

4. The oil separator for air conditioning according to claim 1, characterized in that: The air outlet comprises a first air outlet and a second air outlet respectively located on both sides of the air inlet (2).

5. The oil separator for air conditioning according to claim 1, characterized in that: The air inlet (2) and the air outlet are both arranged at the top of the air conditioner oil separator.

6. The oil separator for air conditioning according to claim 1, characterized in that: The first filter area (31), the second filter area (32) and the third filter area (33) are arranged in sequence along a direction close to the air inlet (2).

7. A condenser, characterized in that: include: case; The oil separator for air conditioning according to any one of claims 1 to 6, which is arranged in the shell, and the air outlet is communicated with the inner cavity of the shell; and The pipeline is arranged in the shell and is used for circulating the medium for heat exchange with the refrigerant discharged from the air outlet.

8. The condenser according to claim 7, characterized in that The pipeline comprises: A first pipeline, a first end of which is used to introduce a medium for exchanging heat with the refrigerant; and The second pipeline has a first end for outputting the medium after heat exchange with the refrigerant, and a second end of the second pipeline is connected to the second end of the first pipeline.

9. The condenser according to claim 8, characterized in that The first pipeline and the second pipeline are respectively arranged on both sides of the air conditioner oil separator.

10. An air conditioner, characterized in that: include: A compressor having an exhaust port for discharging compressed refrigerant; as well as The oil separator for an air conditioner according to any one of claims 1 to 6, wherein the air inlet (2) is connected to the exhaust port of the compressor.

Images