WO2019119839A1

WO2019119839A1 - Air conditioner oil separator and condenser, and air conditioner

Info

Publication number: WO2019119839A1
Application number: PCT/CN2018/101326
Authority: WO
Inventors: 刘华; 胡海利; 胡东兵; 杨旭峰
Original assignee: 格力电器（武汉）有限公司; 珠海格力电器股份有限公司
Priority date: 2017-12-21
Filing date: 2018-08-20
Publication date: 2019-06-27
Also published as: EP3677858A1; CN107940833A; EP3677858B1; US20200248940A1; EP3677858A4

Abstract

An air conditioner oil separator and condenser, and an air conditioner. The air conditioner oil separator comprises a gas inlet (2) for introducing a refrigerant to be separated, a gas outlet for outputting the separated refrigerant, and a filter component (3) provided at the gas outlet. The filter component (3) comprises: a first filter region (31); a second filter region (32), closer to the gas inlet (2) than the first filter region (31); and a third filter region (33), closer to the gas inlet (2) than the second filter region (32), wherein refrigerant separation efficiency of the first filter region (31) is lower than that of the second filter region (32), and/or refrigerant separation efficiency of the third filter region (33) is lower than that of the second filter region (32). Corresponding filter regions are provided according to gas flow pressures in different positions, thereby alleviating the issue of waste caused by excess capacity of filter components, and facilitating homogenization of gas pressures in different regions of a gas outlet.

Description

Air conditioner oil separator, condenser and air conditioner

Technical field

The present invention relates to the field of refrigeration technology, and in particular to an oil separator for an air conditioner, a condenser, and an air conditioner.

Background technique

With the development of air-conditioning condenser units, in order to simplify the external connection of the unit and beautify the appearance of the unit, many condenser units have eliminated the external independent oil separator, and the components with the oil-gas separation function are placed in the condenser housing. Top to take full advantage of the headspace of the condenser housing.

1 shows a schematic structural view of a conventional condenser. As shown in FIG. 1, a conventional air conditioner condenser includes a casing 1, an inlet 2 and an outlet 3 provided on the casing 1, and an inlet 2 and an outlet 3 are both It is provided at the first end of the housing 1. The condenser further includes a first conduit and a second conduit disposed in the housing 1, the first end of the first conduit being in communication with the inlet 2, the first end of the second conduit being in communication with the outlet, the second conduit The second end is in communication with the second end of the first conduit.

The housing 1 is further provided with a support plate 5 for supporting the first pipeline and the second pipeline. The support plate 5 is provided with a first hole adapted to the first pipeline and adapted to the second pipeline. The second hole is formed in the first hole and the second pipe is disposed in the second hole.

The first pipeline is a plurality, and the first ends of the plurality of first pipelines are all connected to the inlet 2. The second conduit is a plurality, and the first ends of the plurality of second conduits are all in communication with the outlet 3.

An oil separator 4 is also disposed within the housing 1, and the oil separator 4 is located at the top of the condenser housing 1.

Fig. 2 shows a schematic structural view of a conventional oil separator. As shown in Fig. 2, the oil separator includes a chamber having an intake port 7 for introducing refrigerant to be separated and an air outlet 6 for outputting the separated refrigerant. The air inlet 7 and the air outlet 6 are provided on the same side of the chamber. Preferably, the air inlet 7 and the air outlet 6 are both disposed at the upper end of the chamber.

The exhaust port of the compressor is in communication with the air inlet 7 of the oil separator 4, and the refrigerant separated by the oil separator 4 is discharged from the air outlet 6 into the inner cavity of the casing 1 of the condenser, and the first pipe Exchange heat with the medium in the second line.

As shown in FIG. 2, the width of the chamber is tapered away from the air outlet 6, and the end of the chamber remote from the air outlet 6 is provided with a drain port 9 for discharging the oil separated in the refrigerant.

The refrigerant enters the chamber through the air inlet 7 to change the flow direction, and finally flows out of the chamber of the oil separator 4 through the air outlet port 6, and the oil flows under the action of inertia and the refrigerant in the process of changing the flow direction of the refrigerant. Separation. In order to further improve the separation efficiency of the oil separator 4, a filter member 8 is provided at the gas outlet 6 to further separate the oil in the refrigerant.

The pressure of the airflow in each of the regions where the distance between the air outlet 6 and the air inlet 7 is different is different, and the filtering performance of the filter member 8 is ensured in order to ensure that the separation efficiency of the refrigerant outputted to the respective regions of the air outlet 6 can reach a predetermined effect. Designed according to the requirements of the maximum pressure of the airflow. Therefore, the performance of the filter member 8 in the region where the pressure of the airflow is small causes unnecessary waste, and the filter member of the region generates unnecessary resistance to the airflow. Therefore, the single-performance filter member 8 provided at the outlet of the oil separator 4 is an unnecessary waste for a region where the gas flow pressure is small, and also causes an air flow hindrance to a region where the gas flow pressure is small.

Summary of the invention

SUMMARY OF THE INVENTION The present invention is directed to an oil separator for an air conditioner, a condenser and an air conditioner to improve the problem that the single-purpose filter member of the prior art is not suitable for a region different from the inlet distance.

According to an aspect of an embodiment of the present invention, there is provided an oil separator for an air conditioner, the oil separator for air conditioning comprising an intake port for introducing a refrigerant to be separated, and an output for outputting the separated refrigerant a gas port and a filter member disposed at the gas outlet, the filter member includes:

First filter zone;

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

a third filter zone that is closer to the air inlet than the second filter zone, and

Wherein, the first filter zone has a lower separation efficiency for the refrigerant than the second filter zone; and/or the third filter zone has a lower separation efficiency for the refrigerant than the second filter zone.

Optionally, the separation efficiency of the third filtration zone to the refrigerant is greater than the first filtration zone.

Optionally,

The thickness or density of the filter component of the second filtration zone is greater than the filter component of the first filtration zone;

The thickness or density of the filter element of the second filtration zone is greater than the filter component of the third filtration zone;

The filter element of the third filter zone has a thickness or density that is greater than the filter component of the first filter zone.

Optionally,

The second filter zone is different from the material of the first filter zone, so that the separation efficiency of the second filter zone is greater than that of the first filter zone;

The material of the second filter zone is different from the material of the third filter zone, so that the separation efficiency of the second filter zone is greater than that of the third filter zone;

The third filter zone is different in material from the first filter zone, so that the separation efficiency of the third filter zone is greater than that of the first filter zone.

Optionally, the air outlet includes a first air outlet and a second air outlet respectively located at two sides of the air inlet.

Optionally, the air inlet and the exhaust port are both provided at the top of the oil separator for air conditioning.

Optionally, the first filter zone, the second filter zone and the third filter zone are arranged side by side in a direction close to the intake port.

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

case;

The air conditioner oil separator described above is disposed in the housing, and the air outlet is in communication with the inner cavity of the housing;

The pipeline is disposed in the casing for circulating a medium that exchanges heat with the refrigerant discharged from the filtration zone.

Optionally, the pipeline includes:

a first conduit, the first end of the first conduit for introducing a medium that exchanges heat with the refrigerant; and

The second conduit, the first end of the second conduit is for outputting a medium after heat exchange with the refrigerant, and the second end of the second conduit is in communication with the second end of the first conduit.

Optionally, the first pipeline and the second pipeline are respectively disposed at two sides of the oil separator for air conditioning.

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

a compressor having an exhaust port for outputting the compressed refrigerant;

In the above-described oil separator for air conditioning, the intake port is in communication with the exhaust port of the compressor.

By applying the technical solution of the present application, the corresponding filter zone is set according to the airflow pressure at different positions, which improves the waste caused by the excessive performance of the filter components in the prior art, and also facilitates the uniformity of the outlet pressure in different regions of the air outlet. .

Other features and advantages of the present invention will become apparent from the Detailed Description of the <RTIgt;

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

Figure 1 is a schematic view showing the structure of a condenser of a prior art air conditioner;

2 is a schematic view showing the structure of an oil separator in a condenser of a prior art air conditioner;

3 is a schematic structural view of an oil separator for air conditioning according to an embodiment of the present invention;

Fig. 4 shows an enlarged view of a portion of Fig. 3.

Wherein, the above figures include the following reference numerals:

1, the chamber; 2, the air inlet; 3, the filter member; 31, the first filter zone; 32, the second filter zone; 33, the third filter zone; 4, the baffle.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. The following description of the at least one exemplary embodiment is merely illustrative and is in no way All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Fig. 3 is a view showing the configuration of the oil separator for air conditioning of the present embodiment. Fig. 4 is a partially enlarged view showing the oil separator for air conditioning of the embodiment.

3 and 4, the oil separator for air conditioning of the present embodiment includes a chamber 1 and an intake port 2 and an air outlet provided in the chamber 1. The air inlet 2 and the air outlet are provided on the same side of the chamber 1. The air outlet is provided with a filter member 3 for filtering the oil mixed in the refrigerant.

The air outlet extends along the length of the oil separator. Preferably, the air outlet includes a first air outlet and a second air outlet respectively disposed on both sides of the air inlet 2 to shorten the length of each air outlet, so that the air flow pressure difference between the two air outlets is reduced.

The air conditioner oil separator further 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 enters the chamber 1 from the air inlet 2, firstly with the baffle 4 hit the impact. After the refrigerant to be separated collides with the baffle 4, the oil and the gaseous refrigerant are separated for the first time due to the different inertia of the oil and the gaseous refrigerant.

After the first separation, the refrigerant mixed with a small amount of oil moves toward both sides of the intake port 2, is filtered by the filter member 3, enters the condenser, and exchanges heat with other media in the condenser.

Due to the inertia of the air flow, the pressure of the airflow in each of the chambers 1 in the direction away from the air inlet 2 is different. If the filter element 3 of a single performance is used, since the pressure of the airflow passing through the respective regions of the filter member 3 is different, the pressure of the corresponding airflow passing through the filter member 3 is also uneven.

In the present embodiment, the performance of the filter member 3 refers to the separation efficiency of the filter member, that is, the ratio of the oil content before and after the refrigerant passes through the filter member 3. In general, the greater the thickness of the filter member 3, the higher the separation efficiency, and the greater the resistance to the refrigerant; the higher the density of the filter member 3, the higher the separation efficiency, and the greater the resistance to the refrigerant. Of course, the separation efficiency of the filter member 3 is also related to the material of the filter member 3.

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, and the better the filtration performance of the filter component 3 is, the resistance to the refrigerant gas flow is also As a result, the resistance of the filter member 3 to the refrigerant in the region where the air flow pressure is small is excessive.

In order to solve the above problem, the filter member 3 of the present embodiment includes the first filter zone 31, the second filter zone 32, and the third filter zone 33 which are sequentially disposed in the direction close to the intake port 2. The third filter zone 33 is adjacent to the air inlet 2 . The third filter zone 33 is also the filter zone closest to the gas inlet 2 of the plurality of filter zones.

Wherein, near the intake port 2, most of the refrigerant flows in a direction away from the intake port 2, and the remaining portion of the refrigerant flows out of the oil separator through the third filter zone 33. As the refrigerant is separated from the intake port 2, more refrigerant flows out of the oil separator from the second filter zone 32, so that the gas flow pressure of the refrigerant at the third filter zone 33 is smaller than that of the refrigerant at the second filter zone 32. pressure. As it is farther from the intake port 2, the flow pressure of the refrigerant is also smaller and smaller, and therefore, the flow pressure of the refrigerant at the first filter zone 31 is smaller than the pressure of the gas flow at the second filter zone 32.

In order to adapt the separation efficiency of each filter zone to the gas flow pressure of the refrigerant, in this embodiment, the separation efficiency of the first filter zone 31 for the refrigerant is smaller than that of the second filter zone 32; the separation of the refrigerant by the third filter zone 33 The efficiency is less than the second filter zone 32.

Further, the separation efficiency of the third filter zone 33 for the refrigerant is greater than that of the first filter zone 31.

In the present embodiment, the filter components of the respective performances are set according to the airflow pressures of the respective regions in the direction away from the air inlet 2, so that the performance of the filter components can be fully utilized, and the airflow outputted in each region of the air outlet is also ensured. Uniformity of pressure.

As shown in FIG. 4, in the present embodiment, the air outlet having the length L is divided into a first filter zone 31, a second filter zone 32, and a third filter zone 33. The sizes of the first filter zone 31, the second filter zone 32, and the third filter zone 33 in the direction away from the intake port 2 are both 1/3L.

The filter members of the first filter zone 31, the second filter zone 32, and the third filter zone 33 have the same thickness and material, and the density of the filter components of the first filter zone 31, the second filter zone 32, and the third filter zone 33 are respectively H ₁ , H ₂ and H ₃ ; 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 , respectively, wherein H ₂ >H ₃ >H ₁ , E ₂ >E ₃ >E ₁ . In the position where the airflow impact is large or close to the air inlet 2, a material with better separation efficiency or a filter member with higher density is provided, and a small separation efficiency is set at a position where the airflow impact is small or far from the air inlet. A slightly poorer material or a filter component with a lower density. Thereby, the purpose of improving the uniform distribution of the airflow and reducing the pressure drop is achieved.

It is also preferable that the filter members of the first filter zone 31, the second filter zone 32, and the third filter zone 33 have the same thickness but different materials such that E ₂ > E ₃ > E ₁ .

It is also preferable that the filter members of the first filter zone 31, the second filter zone 32, and the third filter zone 33 have the same density and material, but differ in thickness such that E ₂ > E ₃ > E ₁ .

In the present embodiment, the width of the chamber 1 is tapered in a direction away from the filter member 3, and one end of the chamber 1 remote from the filter member 3 is provided with an oil drain hole. The filter member 3 is disposed 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.

According to another aspect of the present application, the embodiment further provides a condenser including a casing and the above-mentioned oil separator for air conditioning, the oil separator for air conditioning being disposed in the casing, and the casing is further provided with In the pipeline through which the heat exchange medium flows, the refrigerant discharged from the oil separator flows into the inner cavity of the casing and exchanges heat with the heat exchange medium in the pipeline.

The pipeline includes a first pipeline for introducing a medium that exchanges heat with the refrigerant, and a second conduit for outputting heat exchange with the refrigerant. After the medium, the second end of the first conduit is in communication with the second end of the second conduit.

The first pipeline and the second pipeline are both in plurality, the first end of the casing of the condenser is provided with a medium inlet and a medium outlet, and the first ends of the plurality of first pipelines are connected with the medium inlet, the plurality of The second ends of the two conduits are all in communication with the media outlet.

According to another aspect of the present application, the present embodiment also provides an air conditioner including a compressor and the above-described condenser, the exhaust port of the compressor being in communication with the air inlet 2 of the oil separator for air conditioning.

The above description is only exemplary embodiments of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

An oil separator for an air conditioner, comprising: an intake port (2) for introducing a refrigerant to be separated, an air outlet for outputting the separated refrigerant, and a filter provided at the air outlet The component (3), the filter component (3) comprises:

First filtration zone (31);

a second filter zone (32), closer to the air inlet (2) than the first filter zone (31);

a third filter zone (33) adjacent to the air inlet (2) than the second filter zone (32), and

Wherein the separation efficiency of the first filter zone (31) to the refrigerant is less than the second filter zone (32); and/or the separation efficiency of the third filter zone (33) to the refrigerant is less than The second filtration zone (32).
The oil separator for an air conditioner according to claim 1, wherein the third filter zone (33) has a higher separation efficiency for the refrigerant than the first filter zone (31).
The oil separator for air conditioning according to claim 1, wherein

The thickness or density of the filter member of the second filter zone (32) is greater than the filter component of the first filter zone (31);

a thickness or density of the filter member of the second filtration zone (32) that is greater than a filter component of the third filtration zone (33);

The filter member of the third filter zone (33) has a thickness or density greater than that of the filter element of the first filter zone (31).
The oil separator for air conditioning according to claim 1, wherein

The second filter zone (32) is different from the material of the first filter zone (31) such that the separation efficiency of the second filter zone (32) is greater than the first filter zone (31);

The second filter zone (32) is different from the material of the third filter zone (33) such that the separation efficiency of the second filter zone (32) is greater than the third filter zone (33);

The third filter zone (33) is different in material from the first filter zone (31) such that the separation efficiency of the third filter zone (33) is greater than the first filter zone (31).
The oil separator for an air conditioner according to claim 1, wherein the air outlet includes a first air outlet and a second air outlet respectively located at both sides of the air inlet (2).
The oil separator for an air conditioner according to claim 1, wherein the intake port (2) and the air outlet are both provided at the top of the air conditioner oil separator.
The oil separator for air conditioning according to claim 1, wherein said first filter zone (31), said second filter zone (32) and said third filter zone (33) are adjacent to said The directions of the air inlets (2) are arranged side by side.
A condenser, comprising:

case;

The oil separator for air conditioning according to any one of claims 1 to 7, which is provided in the casing, wherein the air outlet is in communication with a cavity of the casing;

A pipeline is disposed in the casing for circulating a medium that exchanges heat with the refrigerant discharged from the air outlet.
The condenser of claim 8 wherein said conduit comprises:

a first conduit, the first end of the first conduit for introducing a medium that exchanges heat with the refrigerant;

a second pipeline, the first end of the second pipeline is for outputting a medium after heat exchange with the refrigerant, and the second end of the second pipeline is opposite to the second end of the first pipeline Connected.
The condenser according to claim 9, wherein said first conduit and said second conduit are respectively provided at both sides of said air conditioner oil separator.
An air conditioner, comprising:

a compressor having an exhaust port for outputting the compressed refrigerant;

The oil separator for air conditioning according to any one of claims 1 to 7, wherein the intake port (2) communicates with an exhaust port of the compressor.