JPH08261603A - Gas-liquid separator - Google Patents

Abstract

PURPOSE: To enhance the reliability of a compressor by providing a gas-liquid separator with high gas-liquid separation efficiency with regards to a gas-liquid separator which is employed for a refrigerator and so forth. CONSTITUTION: An umbrella-shaped board 10, whose outer periphery is close to the inner wall of a closed vessel 1, is fixed with the lower part of a baffle board 7 and a clearance area between the umbrella shaped board 10 and the inner wall of the closed vessel 1 is arranged to be less than a cross section area of the closed vessel 1, thereby separating air from liquid by striking liquid refrigerants upon the wall surface of the closed vessel 1 and dropping the refrigerants while they are being deposited thereon.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-liquid separator used in refrigerators and the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a gas-liquid separator of this type has a refrigerant outlet 104 and an outlet pipe 103 of an inlet pipe 102 above the inside of a gas-liquid separator body 101 having a closed structure.
And the baffle plate 107 is provided between the outflow port 104 and the inflow port 105. A filter 106 is provided on the upper side of the baffle plate 107 to capture dust. The baffle plate 107 is provided with a plurality of flow holes 108 at a relatively outer peripheral portion thereof, and the refrigerant flows downward relatively outside the gas-liquid separator. Since the inflow port 105 of the outlet pipe 103 is opened in the central upper part of the gas-liquid separator, the refrigerant flows in a U-shape and the gas-liquid separation is performed at this time, and the liquid component falls to the lower part of the gas-liquid separator. The gas component was supplied from the inflow port 105 through the outlet pipe 103 to a compressor (not shown).

[0003]

However, in the above configuration, the refrigerant from the outlet 104 passes through the flow hole 108 of the baffle plate 107, flows into a U-shape, and then enters the inlet 105. But the circulation hole 108 and the inflow port 10
Since 5 is close to each other, the gas-liquid separation efficiency is poor, and a large amount of liquid refrigerant enters the inlet pipe 102, and the liquid refrigerant enters the inlet 105 without being completely separated, and is supplied to the compressor for liquid compression. However, there is a problem in that it causes damage to the compressor.

The present invention has been made in order to solve the problems of the above-mentioned conventional example, and an object thereof is to improve the reliability of a compressor by providing a gas-liquid separator having a high gas-liquid separation efficiency. It is a thing.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, an umbrella-shaped plate whose outer periphery is close to an inner wall of a closed container is fixed to a lower portion of a baffle plate, and a gap area between the umbrella-shaped plate and the inner wall of the closed container is fixed. Is a quarter or less of the cross-sectional area of the closed container.

Further, according to the present invention, an umbrella-shaped plate having a lower opening angle of 90 degrees or more is provided, and the opening of the outlet pipe is arranged above the lower end surface of the umbrella-shaped plate.

Further, according to the present invention, in the gas-liquid separator having the above structure, a circular support plate having a plurality of holes on the outside is arranged between the opening of the outlet pipe and the bottom of the closed container and fixed to the inner wall of the closed container. It is a thing.

[0008]

In the present invention, the umbrella-shaped plate whose outer periphery is close to the inner wall of the closed container of the gas-liquid separator causes the gas-liquid mixed refrigerant to flow outside through the communication hole of the baffle and hit the inner wall of the closed container. Here, the liquid adheres to the wall surface and drops downward, whereby gas-liquid separation is performed. By setting the gap area between the umbrella-shaped plate and the inner wall of the closed container to be 1/4 or less of the cross-sectional area of the closed container, almost all the liquid will hit the wall surface. Furthermore, the downward gas flow velocity becomes faster, and the liquid refrigerant
It is more easily carried to the bottom of the gas-liquid separator, and the gas-liquid separation efficiency is improved.

Further, by providing the umbrella-shaped plate having the lower opening angle of 90 degrees or more, the liquid refrigerant is more likely to flow to the outside, the liquid hits the wall surface, and the gas-liquid separation efficiency is improved.

Further, by arranging the opening of the outlet pipe above the tip of the opening of the lower part of the umbrella-shaped plate, the liquid on the wall surface is not mixed with the gas again and sucked, and the gas-liquid separation efficiency is improved.

Further, by disposing a circular support plate having a plurality of holes on the outside between the opening of the outlet pipe and the bottom of the closed container, the separated liquid refrigerant is stored in a chamber below the circular support plate. Therefore, liquid suction is less likely to occur even in a de-ice operation in which the pressure suddenly changes while the refrigerant is stored.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 and 2 show a gas-liquid separator according to an embodiment of the present invention. An inlet pipe 2 is provided on the upper side of the closed container 1, and an outlet pipe 3 is extended on the lower side toward the upper inside of the closed container 1.
And the refrigerant outlet 4 of the inlet pipe 2 and the inlet 5 of the outlet pipe 3 are opened above the inside of the closed container 1, and the refrigerant inlet 5 of the outlet pipe 3 is connected. The opening 6 in the opposite direction is adapted to be connected to a compressor (not shown).

At the upper part of the closed container 1, the outlet 4 is provided.
A baffle plate 7 is provided between the baffle plate 7 and the inflow port 5, and a plurality of communication holes 8 are formed outside the baffle plate 7 in the radial direction. Further, a filter 9 is provided on the upper side of the baffle plate 7 to capture dust. An umbrella-shaped plate 10 is fixed to the lower part of the baffle plate 7 by means such as welding or brazing. The lower end 11 of the umbrella-shaped plate 10 is
It is provided below the inflow port 5 of the outlet pipe 3, and the inflow port 5 is exactly covered with an umbrella.
The opening angle of the umbrella is set to 90 degrees to 120 degrees, the lower end 11 is close to the inner wall of the closed container 1, and the area of the gap with the inner wall is 1/4 or less of the closed container cross-sectional area. There is. At the center of the closed container 1, the outer circumference of the circular support plate 12 shown in FIGS. 3A and 3B is fixed to the inner wall of the closed container 1 by press fitting or the like. The circular support plate 12 has a plurality of holes 14 and holes 13 through which the outlet pipe 3 penetrates radially outward.

The refrigerant in the gas-liquid mixed state flows into the upper chamber 15 through the inlet pipe 2. The gas-liquid mixed refrigerant has dust and the like captured by the filter 9 and the liquid refrigerant is finely crushed, and thereafter enters the intermediate chamber 16 downward from the communication hole 8 formed relatively outside the baffle plate 7. Intermediate room 16
The entered refrigerant immediately hits the umbrella-shaped plate 10 and flows toward the outside. The lower tip 11 of the umbrella-shaped plate 10 is close to the inner wall of the closed container 1, and the gap area with the inner wall is 1/4 or less of the cross-sectional area of the closed container. It flows at an angle along the umbrella and hits the inner wall of the closed container 1. At this time, most of the liquid component adheres to the inner wall and flows downward due to the downward gas flow velocity and gravity. On the other hand, the gas makes a U-turn in the middle of the intermediate chamber 16 and is sucked into the compressor from the refrigerant inlet 5 of the outlet pipe 3. The liquid refrigerant directed downward is stored in the lower chamber 17 through the plurality of holes 14 on the outer side in the radial direction formed in the circular support plate 12. In this way, the liquid refrigerant that has entered the gas-liquid separator flows outward by the umbrella-shaped plate 10, and almost all of it hits the inner wall of the closed container 1 and adheres and drops there, so that it has a conventional structure. Moreover, the separation efficiency is better than simply making a U-turn of the gas-liquid mixed refrigerant to perform gas-liquid separation. For this reason,
The liquid compression due to the suction of the liquid refrigerant can be prevented more reliably, and the reliability of the compressor can be improved.

Further, by providing the umbrella-shaped plate 10 having the lower opening angle of 90 degrees or more, the liquid refrigerant is more likely to flow to the outside, the liquid is more likely to hit the wall surface, and the gas-liquid separation efficiency is improved. Further, the opening 5 of the outlet pipe 3 is connected to the umbrella-shaped plate 10
By arranging it on the upper side of the lower tip 11, the liquid on the wall surface is not mixed with the gas again and sucked, and the gas-liquid separation efficiency is improved.

Further, by disposing the circular support plate 12 having a plurality of holes 14 on the outside between the opening 5 of the outlet pipe 3 and the bottom of the closed container, the separated liquid refrigerant is removed from the bottom of the circular support plate 12. Since the liquid is stored in the lower chamber 17, the liquid storage part and the gas flow part are separated from each other, and the liquid is not mixed with the gas again to be sucked, and the gas-liquid separation efficiency is improved. Further, in the deice operation, the pressure inside the gas-liquid separator changes abruptly while the refrigerant is stored. At this time, even if some foaming occurs, since the lower chamber 17 in which the liquid is stored and the refrigerant inlet 5 of the outlet pipe 3 are separated into different chambers, it is difficult to suck the liquid.

[0017]

As is apparent from the above description, according to the present invention, by providing an umbrella-shaped plate whose outer periphery is close to the inner wall of the closed container, the liquid refrigerant is applied to the wall surface of the closed container and dropped while being attached to the wall surface. Since the gas-liquid separation is performed by the above method, a gas-liquid separator with improved gas-liquid separation efficiency can be provided, and the reliability of the compressor can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a gas-liquid separator according to an embodiment of the present invention.

FIG. 2 is a detailed view of a main part of the gas-liquid separator shown in FIG.

3A is a front view of a circular support plate of a gas-liquid separator according to an embodiment of the present invention, and FIG. 3B is a sectional view of the same.

FIG. 4 is a vertical sectional view of a conventional gas-liquid separator.

[Explanation of symbols]

 1 Airtight container 2 Inlet pipe 3 Outlet pipe 4 Outlet port 5 Inlet port 7 Baffle plate 8 Communication hole 9 Filter 10 Umbrella-shaped plate 11 Lower tip of umbrella-shaped plate 12 Circular support plate 14 Multiple holes

Claims (4)

[Claims] 1. A closed container, an inlet pipe at the upper part of the closed container, an outlet pipe at the lower part of the closed container that connects the inside and the outside of the closed container and has an opening on the inner side facing upward, and the inlet pipe. Between the outlet pipe, a baffle plate having a flow passage on the outside in the radial direction and a filter portion on the upper part, and an umbrella-shaped plate that is fixed to the lower part of the baffle plate and has an outer periphery thereof close to the inner wall of the closed container, The gap area between the umbrella-shaped plate and the inner wall of the closed container is 1/4 of the cross-sectional area of the closed container.
The following gas-liquid separator. 2. The gas-liquid separator according to claim 1, wherein the umbrella-shaped plate has a lower opening angle of 90 degrees or more. 3. The gas-liquid separator according to claim 1, wherein the opening of the outlet pipe is arranged above the lower end surface of the umbrella-shaped plate. 4. The gas-liquid according to claim 1, wherein a circular support plate having a plurality of holes on the outside is arranged between the opening of the outlet pipe and the bottom of the closed container, and the outer periphery of the circular support plate is fixed to the inner wall of the closed container. Separator.