JPH047498Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is an oil separator of a refrigeration equipment, in particular, a demister is placed inside the shell, and the demister allows the refrigerant gas discharged from the compressor of the refrigeration equipment to be removed. The present invention relates to an oil separator that separates refrigerating machine oil mixed into the oil.

(Prior art) Conventionally, this type of oil separator was manufactured using the "Refrigeration and Air Conditioning Handbook 4th Edition Basic Edition" (Published by Japan Refrigeration Association, Publication Date May 30, 1980), "Part 1, Chapter 7, Appendix". As shown in Figure 3, this device has a refrigerant gas inlet pipe 2 connected to the side wall of the internally sealed shell 1, and an outlet pipe 3 connected to the upper part. At the same time, a demister 4 is disposed inside the shell 1 between the inlet pipe 2 and the outlet pipe 3.

Refrigerant gas discharged from the compressor of the refrigeration system is thus introduced into the shell 1 through the inlet pipe 2, and this introduced gas is discharged to the outlet pipe 3 side through the demister 4. Refrigerating machine oil mixed into the refrigerant gas upon contact with the demister 4 is separated.

(Problem to be solved by the invention) By the way, in the above oil separator, in order to efficiently separate the refrigerating machine oil mixed into the refrigerant gas by the demister 4, the refrigerant gas is uniformly distributed throughout the demister 4. It is necessary to make contact with a certain velocity distribution, but with the conventional method mentioned above,
The speed of the refrigerant gas relative to the demister 4 is such that some parts are brought into contact at high speed and others are brought into contact at low speed.Therefore, there is a problem in that the separation efficiency of refrigerating machine oil by the demister 4 is poor.

This invention was devised in view of the above problems.
The purpose is to provide an oil separator that can significantly improve separation efficiency by bringing refrigerant gas into contact with the demister with an overall uniform velocity distribution.

(Means for Solving the Problems) The oil separator of the present invention is constructed as shown in FIGS. An inlet side connecting pipe 21 having connecting ports 21a, 21a at both ends is disposed along the length direction of the body 11 on one side of the intermediate portion, and the connecting ports 21a, 2 of the connecting pipe 21 are disposed along the length direction of the body 11.
1a is connected to the body 11, and the inlet pipe 2 is connected to the middle part in the length direction of the connecting pipe 21, and connecting ports 31a, 3 are connected to the other side of the shell 1 at both ends.
1a is arranged along the length direction of the body 11, and the connection ports 31a, 31a of the connection pipe 31 are connected to the body 11,
An outlet pipe 3 is connected to the intermediate portion in the length direction of this connecting pipe 31, and between one side of the shell 1 to which the inlet side connecting pipe 21 is connected and the other side to which the outlet side connecting pipe 31 is connected. , at least one flat demister 4 having a size that partitions the inside of the shell 1 in the radial direction and forming a refrigerant gas introduction chamber A and a refrigerant gas discharge chamber B in the shell 1 is attached to the inlet side connecting pipe. 21 and the connection ports 31a, 31a of the outlet side connection pipe 31 along the length direction of the body 11, and inside the refrigerant gas introduction chamber A. A curved surface extending in the length direction of the shell 1 and curved with approximately the same curvature as the body of the shell 1 is provided between the attachment side of the inlet side connecting pipe 21 and the demister 4, and Connection port 21a of connection pipe 21,
The velocity distribution of the refrigerant gas supplied from the refrigerant gas supplied from the demister 4 has a large number of fine deceleration passages that enable passage of the high-speed refrigerant gas and guide the low-speed refrigerant gas to the demister 4 along the curved surface. It is characterized by the provision of a speed equalizing plate 5 that equalizes the speed distribution to the supply surface.

(Function) The refrigerant gas introduced from the inlet pipe 2 into the refrigerant gas introduction chamber A of the shell 1 is first branched in the length direction of the shell 1 by the inlet side connecting pipe 21, and then is branched into the inlet side connecting pipe 21. In addition to being introduced through connection ports 21a, 21a provided at both longitudinal ends of 21,
Among the refrigerant gases to be introduced, the speed equalizing plate 5 decelerates the high-speed refrigerant gas by passing through a large number of fine deceleration passages provided in the speed equalizing plate 5, and the low-speed refrigerant gas is decelerated by the speed equalizing plate 5. The refrigerant gas is dispersed by being guided to the supply surface of the demister 4 along the curved surface of the speed equalizing plate 5 without passing through the demister 4. Since the refrigerant gas is supplied with a uniform velocity distribution over almost the entire supply surface and can pass through the demister 4, it is possible to reduce the passage resistance in the demister 4 and efficiently separate the refrigerating machine oil mixed into the refrigerant gas. It can be done well.

(Example) An oil separator for a refrigeration system according to the present invention will be described below with reference to an example shown in the drawings.

In FIGS. 1 and 2, 1 is a shell whose interior is airtight, and includes a cylindrical body 11 with a predetermined length, and an upper lid 12 fitted to the upper and lower ends of the body 11. and a lower lid 13.

Further, in the outer peripheral wall of the body 11 in the shell 1, an inlet side connecting pipe 21 having connection ports 21a, 21a at both ends is provided along the length direction of the body 11 on one side of the intermediate portion in the length direction. The connection ports 21a, 21a of the connection pipe 21 are connected to the body 1.
1, and the inlet pipe 2 is connected to the intermediate part in the length direction of this connecting pipe 21, and the outlet side connecting pipe 31 having connection ports 31a, 31a at both ends is connected to the other side of the shell 1. The connection ports 31a, 3 of the connection pipe 31 are arranged along the length direction of the body 11.
1a is connected to the body 11, the outlet pipe 3 is connected to the intermediate portion of the connecting pipe 31 in the longitudinal direction, and the inlet pipe 2 and the outlet pipe 3 are installed so as to be oriented horizontally.

Further, the pipe extends in the vertical direction between one side of the shell 1 connecting the inlet side connecting pipe 21 and the other side connecting the outlet side connecting pipe 31, and partitions the inside of the shell 1 in the radial direction. 2 with a size of
Two flat demisters 4 are placed at a predetermined interval, and one demister 4 is connected to the connection port 2 of the inlet side connection pipe 21.
1a and 21a, and the other demister 4 is arranged along the length direction of the body 11 so as to face the connection ports 31a and 31a of the outlet side connection pipe 31, and the entire surface of each demister 4 is The refrigerant gas can pass through the demister 4 facing the connection ports 21a, 21a of the inlet side connecting pipe 21 and the inner wall of the body 11 to which the inlet side connecting pipe 21 is connected. While the introduction chamber A is partitioned, a refrigerant gas discharge chamber B is partitioned by the inner wall of the body 11 to which the other demister 4 and the outlet side connecting pipe 31 are connected.

Each demister 4 is formed into a flat plate shape by loading a linear body 42 between support plates 41, 41 having a large number of opening windows.

Then, inside the refrigerant gas introduction chamber A, a connection port 21a of the inlet side connecting pipe 21,
21a, it has a curved surface that extends in the length direction of the shell 1 and is curved with approximately the same curvature as the body of the shell 1, and from the connection ports 21a, 21a of the inlet side connection pipe 21. Supply in the demister 4, which has a large number of fine deceleration passages that allow the passage of high-speed refrigerant gas in the velocity distribution of the supplied refrigerant gas and guide the low-speed refrigerant gas to the demister 4 along the curved surface. A speed equalizing plate 5 is provided to equalize the speed distribution over the surface.

The speed equalizing plate 5 is made of, for example, punched metal or a net-like material having a large number of fine deceleration passages.

By doing so, the refrigerant gas introduced from the inlet pipe 2 into the refrigerant gas introduction chamber A of the shell 1 is first branched in the length direction of the shell 1 by the inlet side connection pipe 21, and then connected to the inlet side connection. tube 21
Connection ports 21a, 21a provided at both longitudinal ends of
The refrigerant gas flowing in from the inlet pipe 2 is divided and supplied to upper and lower positions inside the shell 1 by the bifurcated inlet connecting pipe 21. Furthermore, the refrigerant gas introduced into the introduction chamber A is distributed by the speed equalizing plate 5 and supplied to each demister 4 with a uniform velocity distribution, that is, as indicated by the arrow in FIG. As shown, the high-speed refrigerant gas blown out from the center portions of the connection ports 21a and 21 passes through a large number of fine deceleration passages of the speed equalizing plate 5, and the speed of the refrigerant gas is weakened while passing through each of the demisters 4. The low-speed refrigerant gas blown out toward the outer circumference of the connection ports 21a, 21a flows along the curved surface of the speed equalization plate 5 without passing through the speed equalization plate 5. Each of the demisters 4 while maintaining the speed
Therefore, each demister 4
Since the refrigerant gas passing through the demister 4 is decelerated as described above and can be passed over the entire flat supply surface with a uniform velocity distribution, the refrigerant gas can be This makes it possible to efficiently separate the refrigerating machine oil that gets mixed in.

Therefore, from the discharge chamber B of the shell 1, refrigerant gas that does not contain refrigerating machine oil can be discharged to the outside from the outlet side connecting pipe 31 to the outlet pipe 3.

Further, in the illustrated embodiment, the body 1 of the shell 1
1 and the lower lid 13, respectively, are connected to first and second discharge pipes 6, 7 for refrigerating machine oil, and when the shell 1 is arranged vertically as shown in the drawing, the second discharge pipe 7 is The refrigerating machine oil separated and removed by the demister 4 is taken out to the outside, and when the shell 1 is placed horizontally, the refrigerating machine oil is taken out to the outside through the first discharge pipe 6. The oil separator can be used in both vertical and horizontal configurations.

In FIG. 1, reference numeral 8 denotes a mounting leg provided on the outer periphery of the second discharge pipe 7 at the lower part of the lower lid 13, and supports the shell 1 via the mounting leg 8.

(Effect of the invention) As explained above, in the oil separator of the invention, the shell 1 is composed of a cylindrical body 11 having a predetermined length.
Connecting ports 21 on one side of the middle part in the length direction, and on both ends.
An inlet-side connecting pipe 21 having pipes a and 21a is disposed along the length direction of the body 11, and the connecting pipe 21
The connection ports 21a, 21a of the shell 1 are connected to the body 11, and the inlet pipe 2 is connected to the middle part in the length direction of the connection pipe 21, and the connection ports 31a, 31a are connected to the other side of the shell 1 at both ends. An outlet-side connecting pipe 31 having a diameter of An outlet pipe 3 is connected to the intermediate part in the direction, and a diameter inside the shell 1 is connected between one side of the shell 1 to which the inlet side connecting pipe 21 is connected and the other side to which the outlet side connecting pipe 31 is connected. It has a size that divides it in the direction,
At least one flat demister 4 forming a refrigerant gas introduction chamber A and a refrigerant gas discharge chamber B in the shell 1 is connected to the connection port 21 of the inlet side connection pipe 21.
a, 21a and the connection port 3 of the outlet side connection pipe 31
1a, 31a along the length direction of the body 11, and inside the refrigerant gas introduction chamber A, between the installation side of the inlet side connecting pipe 21 and the demister 4, It has a curved surface that extends in the length direction of the shell 1 and is curved with approximately the same curvature as the body of the shell 1, and the velocity of the refrigerant gas supplied from the connection ports 21a, 21a of the inlet side connection pipe 21. It has a large number of fine deceleration passages that allow the passage of high-speed refrigerant gas in the distribution and guide the low-speed refrigerant gas to the demister 4 along the curved surface, and uniformizes the velocity distribution to the supply surface of the demister 4. Since the speed equalizing plate 5 is provided, the refrigerant gas introduction chamber A of the shell 1 from the inlet pipe 2 is provided.
The refrigerant gas introduced into the inlet side connecting pipe 21
First, the shell 1 is branched in the length direction,
Of the refrigerant gas introduced through the connection ports 21a, 21a provided at both lengthwise ends of the inlet side connection pipe 21, and introduced by the equalization plate 5,
The high speed refrigerant gas is decelerated by passing through a large number of minute deceleration passages provided in the speed equalizing plate 5, and the low speed refrigerant gas is decelerated along the curved surface of the speed equalizing plate 5 without passing through the speed equalizing plate 5. The refrigerant gas can be dispersed by being guided to the supply surface of the demister 4 at the same time, and the refrigerant gas is entirely decelerated and supplied to almost the entire supply surface of the flat demister 4 with a uniform velocity distribution, Since it can pass through the demister 4,
While the passage resistance in the demister 4 can be reduced, the refrigerating machine oil mixed in the refrigerant gas can be efficiently separated.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an oil separator according to the present invention, FIG. 2 is a plan sectional view of the essential parts, and FIG. 3 is a longitudinal sectional view showing a conventional example. 1... Ciel, 11... Body, 2... Inlet pipe,
21... Inlet side connection pipe, 21a, 21a... Connection port, 3... Outlet pipe, 31... Outlet side connection pipe, 31
a, 31a... Connection port, 4... Demister, 5...
Equalizing plate, A...refrigerant gas introduction chamber, B...refrigerant gas discharge chamber.

Claims (1)

[Scope of utility model registration request] A shell 1 consisting of a cylindrical body 11 having a predetermined length has connection ports 2 on one side of the middle part in the longitudinal direction, and on both ends thereof.
An inlet side connecting pipe 21 having pipes 1a and 21a is arranged along the length direction of the body 11, and the connecting pipe 2
The connection ports 21a, 21a of the shell 1 are connected to the body 11, the inlet pipe 2 is connected to the intermediate portion in the length direction of the connection pipe 21, and the other side of the shell 1 is connected to the inlet pipe 2.
An outlet side connecting pipe 31 having connecting ports 31a, 31a at both ends is disposed along the length direction of the body 11, and the connecting ports 31a, 31a of the connecting pipe 31 are arranged along the length direction of the body 11.
is connected to the shell 11, and the outlet pipe 3 is connected to the longitudinally intermediate portion of this connecting pipe 31, so that the shell 1
between one side connecting the inlet side connecting pipe 21 and the other side connecting the outlet side connecting pipe 31,
At least one flat demister 4 having a size that partitions the inside of the shell 1 in the radial direction and forming a refrigerant gas introduction chamber A and a refrigerant gas discharge chamber B in the shell 1 is attached to the inlet side connecting pipe 21. connection port 2
1a, 21a and the connection ports 31a, 31a of the outlet side connection pipe 31, and are arranged along the length direction of the body 11, and inside the refrigerant gas introduction chamber A, the inlet side connection pipe A curved surface extending in the length direction of the shell 1 and curved with approximately the same curvature as the body of the shell 1 is provided between the attachment side of the inlet side connecting pipe 21 and the demister 4. It has a large number of fine deceleration passages that allow high-speed refrigerant gas to pass through in the velocity distribution of the refrigerant gas supplied from the connection ports 21a, 21a, and allow low-speed refrigerant gas to be guided to the demister 4 along the curved surface, An oil separator for a refrigeration system, characterized in that a speed equalizing plate 5 is provided to equalize the speed distribution to the supply surface of the demister 4.