CN201731697U

CN201731697U - Gas-liquid separator

Info

Publication number: CN201731697U
Application number: CN2010202605468U
Authority: CN
Inventors: 程德威
Original assignee: Ningbo Aux Electric Co Ltd
Priority date: 2010-07-16
Filing date: 2010-07-16
Publication date: 2011-02-02
Anticipated expiration: 2020-07-16

Abstract

A gas-liquid separator comprises a closed casing (1), a liquid inlet pipe (2) and a gas outlet pipe (3). The liquid inlet pipe (2) and the gas outlet pipe (3) are located in the casing (1), a first oil return hole (3.1) is disposed at the bottom end of the gas outlet pipe (3), a second oil return hole (3.2) is arranged at an outlet end of the gas outlet pipe (3), a first filtering screen (5) for filtering liquid refrigerant is arranged at the upper end of the casing (1), an inlet end of the gas outlet pipe (3) upwards extends out of the first filtering screen (5), and the outlet end of the liquid inlet pipe (2) is located below the first filtering screen (5). The gas-liquid separator has the advantages of fine gas-liquid separation effect.

Description

Gas-liquid separator

Technical field:

The utility model relates to the air-conditioning system field, specifically is a kind of gas-liquid separator that is used to separate gaseous refrigerant and liquid refrigerant.

Background technology:

The main effect of gas-liquid separator is that gaseous refrigerant and liquid refrigerant in the low-pressure low-temperature gas-liquid two-phase cold-producing medium that will get back to before the compressor return air pipe separated in air-conditioning system, make gaseous refrigerant get back to compressor by the escape pipe of gas-liquid separator, isolated liquid refrigerant then is stored in the gas-liquid separator, makes the lubricating oil that is deposited on gas-liquid separator bottom or the cold-producing medium liquid level take back compressor through the spill port that is located on the escape pipe with gaseous refrigerant simultaneously.Like this, just can prevent liquid hammer, cold-producing medium that compressor is subjected to liquid refrigerant too much and in the dilution compressor oil, system lubricating oil can not return compressor and the phenomenon of oil starvation takes place, keep the operational efficiency of system and the pasta in the crankcase.

The gas-liquid separator of Fig. 1 for using in the conventional air-conditioning system, as shown in the figure, this gas-liquid separator comprise the housing 1 of sealing ', place the feed tube 2 of housing 1 ' interior ' and escape pipe 3 '.Described escape pipe 3 ' be U type, along place housing 1 ' in.

As can be seen from the figure, feed tube 2 ' the port of export from housing 1 ' the top directly put in downwards housing 1 ' in, escape pipe 3 ' arrival end be located immediately at housing 1 ' the upper end, feed tube 2 ' the port of export and escape pipe 3 ' the arrival end place any filter all is not set, reduced the separating effect of gas-liquid separator to a certain extent, be easy to make liquid refrigerant with the gaseous refrigerant of separating flow to escape pipe 3 ' in, and finally get back to compressor.

The utility model content:

The technical problems to be solved in the utility model is: provide a kind of gas-liquid separation effect good gas-liquid separator.

For solving the problems of the technologies described above, the utility model adopts a kind of like this gas-liquid separator: it comprises the housing of sealing, the feed tube that is positioned at housing and escape pipe, the bottom of described escape pipe is provided with first spill port, the port of export of described escape pipe is provided with second spill port, the upper end of described housing is provided with first screen pack that filters liquid refrigerant, the arrival end of described escape pipe protrudes upward outside first screen pack, and the port of export of described feed tube is positioned at the below of first screen pack.

After adopting above structure, the utility model compared with prior art, have the following advantages: because the upper end of housing is provided with first screen pack that filters liquid refrigerant, and the arrival end of escape pipe protrudes upward outside first screen pack, the port of export of feed tube is positioned at the below of first screen pack in addition, effectively improved the separating effect of gas-liquid separator, the gaseous refrigerant of separating needs just can enter in the escape pipe after the filtration of first screen pack, has avoided liquid refrigerant to get back to compressor with the gaseous refrigerant of separating.

As improvement,, make the filter effect that filters liquid refrigerant better because first screen pack is a multistorey strainer mesh.

As further improvement, owing to also be provided with the 3rd spill port on the escape pipe, the 3rd spill port is positioned at the centre of first spill port and second spill port, when the liquid level position in the gas-liquid separator appears between first spill port and second spill port, lubricating oil just can be taken back to compressor with gaseous refrigerant through the 3rd spill port, has effectively increased the oil return scope of lubricating oil in the gas-liquid separator.

As further improvement, because the port of export of escape pipe also is provided with the inverted U escape pipe, inverted U escape pipe and escape pipe are connected as a single entity, the port of export of inverted U escape pipe stretches out downwards outside the bottom of housing, the extension tube attached that is connected with the port of export of inverted U escape pipe just can be walked pipe from the below of gas-liquid separator like this, has saved installing space.

As further improvement, because feed tube tilts to be installed on the sidewall of housing along the tangential direction of housing sidewall, the port of export of feed tube down, the two phase refrigerant that flows into along feed tube just can enter from the tangential direction of housing sidewall in the gas-liquid separator on the one hand, under the double action of centrifugal force and gravity, effectively improved the separating effect of gas-liquid separator, the extension tube attached that is connected with the arrival end of feed tube can be walked pipe from the below of gas-liquid separator on the other hand, has saved installing space.

Description of drawings:

Fig. 1 is the sectional structure schematic diagram of the gas-liquid separator of prior art.

Fig. 2 is the sectional structure schematic diagram of gas-liquid separator of the present utility model.

Fig. 3 is the plan structure schematic diagram of the gas-liquid separator shown in Fig. 2.

Shown in the prior art figure: 1 ', housing, 2 ', feed tube, 3 ', escape pipe.

Shown in the utility model figure: 1, housing, 2, feed tube, 3, escape pipe, 3.1, first spill port, 3.2, second spill port, the 3.3, the 3rd spill port, 4, the inverted U escape pipe, 5, first screen pack, 6, second screen pack.

The specific embodiment:

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

As Fig. 2 is the sectional structure schematic diagram of gas-liquid separator of the present utility model, has mainly shown the internal structure of gas-liquid separator.Fig. 3 is the plan structure schematic diagram of the gas-liquid separator shown in Fig. 2, mainly is in order to show the installation site of feed tube 2.

As shown in Figure 2, gas-liquid separator of the present utility model, it comprises housing 1, the feed tube 2 that is positioned at housing 1 and the escape pipe 3 of a sealing.The upper end of housing 1 is provided with first screen pack 5 that is used to filter liquid refrigerant, and this first screen pack 5 is a multistorey strainer mesh, and filter effect is relatively good.And the port of export of feed tube 2 is positioned at the below of first screen pack 5, the arrival end of escape pipe 3 protrudes upward outside first screen pack 5, after needing earlier through the filtration of first screen pack 5, the gaseous refrigerant that gas-liquid separator separates is come out just continues upwards to flow into the arrival end of escape pipe 3 like this, avoided liquid refrigerant to flow in the escape pipe 3 with gaseous refrigerant, and finally got back to compressor with the gaseous refrigerant of separating.

As shown in Figure 2, feed tube 2 integral body are positioned at the below of first screen pack 5, and feed tube 2 tilts to be installed in along the tangential direction of the sidewall of housing 1 on the sidewall of housing 1 (seeing Fig. 3 for details), and the port of export of feed tube 2 down.The two phase refrigerant that flows into along feed tube 2 just can enter in the gas-liquid separator from the tangential direction of the sidewall of housing 1 so on the one hand, under the double action of centrifugal force and gravity, effectively improved the separating effect of gas-liquid separator, on the other hand because the top installing space of gas-liquid separator is limited, feed tube 2 tilts to be installed on the sidewall of housing 1 along the tangential direction of the sidewall of housing 1 after, the extension tube attached that is connected with the arrival end of feed tube 2 just can be walked pipe from the below of gas-liquid separator, has fully saved the installing space of gas-liquid separator.

As shown in Figure 2, escape pipe 3 is the U type, along placing in the housing 1, also can cry along U type escape pipe.This escape pipe 3 is provided with three spill ports that are used to absorb lubricating oil: one of them is located at the sidewall of the bottom of escape pipe 3, and diameter is 1mm～1.5mm, is first spill port 3.1, and the import department of this first spill port 3.1 is equipped with second screen pack 6; Another is opened near on the sidewall of the port of export, and diameter is 0.5mm～1mm, is second spill port 3.2; Last is positioned at first spill port 3.1 and second spill port 3.2 centre vertically, and diameter is 0.5mm～1mm, is the 3rd spill port 3.3.

Along with the variation of air-conditioning system running status, the flow of cold-producing medium constantly changes in the refrigeration system, and liquid refrigerant and lubricating oil liquid level position constantly change in the gas-liquid separator.When full load situation, in the gas-liquid separator amount of liquid refrigerant seldom, grease accumulation is in the bottom, then carries back compressor by first spill port 3.1 by gaseous refrigerant; When underrun, liquid refrigerant is in a high position, and lubricating oil also is in a high position, and lubricating oil just can utilize second spill port 3.2 to return compressor like this; When operation at part load, liquid refrigerant mediates, and lubricated pasta also mediates, and lubricating oil can return compressor by the 3rd spill port 3.3 of centre like this.Compared with prior art, the 3rd spill port 3.3 is provided with the oil return scope that has increased gas-liquid separator.

As shown in Figure 2, because the top installing space of gas-liquid separator is limited, the port of export of escape pipe 3 also is provided with inverted U escape pipe 4, inverted U escape pipe 4 is connected as a single entity with escape pipe 3, the port of export of inverted U escape pipe 4 stretches out downwards outside the bottom of housing 1, the extension tube attached that is connected with the port of export of inverted U escape pipe 4 also can be walked pipe from the below of gas-liquid separator like this, has saved the installing space of gas-liquid separator equally.

Below only just the preferred plan of the utility model embodiment is described, but can not be interpreted as it is restriction claim.The utility model not only is confined to above embodiment, and its concrete structure allows multiple variation, as long as the variation in these claims is all within protection domain of the present utility model.

Claims

1. gas-liquid separator, it comprises the housing (1) of sealing, the feed tube (2) that is positioned at housing (1) and escape pipe (3), the bottom of described escape pipe (3) is provided with first spill port (3.1), the port of export of described escape pipe (3) is provided with second spill port (3.2), it is characterized in that: the upper end of described housing (1) is provided with first screen pack (5) that filters liquid refrigerant, the arrival end of described escape pipe (3) protrudes upward outside first screen pack (5), and the port of export of described feed tube (2) is positioned at the below of first screen pack (5).

2. gas-liquid separator according to claim 1 is characterized in that: described first screen pack (5) is a multistorey strainer mesh.

3. gas-liquid separator according to claim 1 is characterized in that: also be provided with the 3rd spill port (3.3) on the described escape pipe (3), the 3rd spill port (3.3) is positioned at the centre of first spill port (3.1) and second spill port (3.2).

4. gas-liquid separator according to claim 1, it is characterized in that: the port of export of described escape pipe (3) also is provided with inverted U escape pipe (4), described inverted U escape pipe (4) is connected as a single entity with escape pipe (3), and the port of export of described inverted U escape pipe (4) stretches out downwards outside the bottom of housing (1).

5. gas-liquid separator according to claim 1 is characterized in that: described feed tube (2) tilts to be installed on the sidewall of housing (1) along the tangential direction of the sidewall of housing (1), and the port of export of described feed tube (2) down.