JPH0141104Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an oil separator for a refrigeration system.

A conventional oil separator of this type is shown in FIG. In the figure, 1 is a container, 2 is a gas inlet pipe formed on the upper surface of the container 1, 3 is a gas outlet pipe provided on the side surface of the container 1, and 4 is connected to the gas inlet pipe 2 on the upper surface of the container 1. 5 is an automatic oil return device provided at the lower part of the container 1, 6 is a refrigerant gas, and 7 is refrigerating machine oil separated from the refrigerant gas.

Next, the operation will be explained. The refrigerant gas 6 blown into the gas inlet pipe 2 becomes slower in the oil separating wire mesh 4 and passes through the oil separating wire mesh 4 . At this time, the fine particles of the refrigerating machine oil 7 contained in the refrigerant gas 6 adhere to the oil separating wire mesh 4, are separated, and fall to the bottom of the container 1 as oil droplets.

Refrigerant gas 6 flows from gas outlet pipe 3 to a condenser (not shown). Refrigerating machine oil 7 accumulated at the bottom of container 1
When the oil level reaches a certain level or higher, the oil is returned to the refrigeration compressor (not shown) by an automatic oil return device 5.

Since the conventional oil separator is configured as described above, small oil droplets that fall from the oil separation wire mesh 4 and some of the fine particles of the refrigerating machine oil 7 adhering to the oil separation wire mesh 4 are absorbed into the flow of the refrigerant gas 6. Carried gas outlet pipe 3
This resulted in disadvantages such as more oil flowing out of the oil separation container 1 and poor oil separation performance.

This idea was made in order to eliminate the drawbacks of the conventional ones as described above, and by providing a gas rectifying cylinder on the oil separation wire mesh, the flow direction of the refrigerant gas is rectified, preventing the diffusion of refrigerating machine oil particles, and also The objective is to provide a small, lightweight, and high-performance oil separator by providing oil separation wire meshes with different mesh sizes.

An embodiment of this invention will be described below with reference to the drawings.

In FIG. 2, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts, and the explanation thereof will be omitted. 4a
4b is the first oil separation wire mesh, 4a is the first oil separation wire mesh.
A secondary oil separation wire mesh with smaller meshes, 8a a gas rectifying cylinder, 8b a gas flushing plate, and 9 an oil drop hole. Next, the operation will be explained. The refrigerant gas 6 blown from the gas inlet pipe 2 is passed through the primary oil separation wire mesh 4a.
The speed becomes low in the refrigerant gas 6, and when it passes through the primary oil separation wire gauze 4a, only the fine particles of the refrigerating machine oil 7 contained in the refrigerant gas 6 adhere to and separate from the primary oil separation wire gauze, and pass through the inside of the gas rectifying tube 8a. Flows to the bottom of container 1. Refrigerating machine oil 7, which has been separated and turned into oil droplets, also falls to the bottom of the container 1. On the other hand, some of the refrigerating machine oil particles carried by the flow of the refrigerant gas 6 also collide with the inner surface of the gas rectifying tube 8a and adhere thereto, and fall as oil droplets. Refrigerant gas 6
The gas further separates residual refrigerating machine oil when passing through a secondary oil separating wire mesh 4b, which has a smaller mesh than the primary oil separating wire mesh 4a, and then collides with the upper surface of the container to attach and separate the residual refrigerating machine oil to the gas outlet. It flows from pipe 3 to a condenser (not shown). Secondary oil separation wire mesh 4
The refrigerating machine oil separated by b and the refrigerating machine oil adhering to the top surface of the container 1 fall to the bottom of the container 1 through the oil drop hole 9. Refrigerating machine oil 7 accumulated at the bottom of container 1 is returned to a refrigerating compressor (not shown) by automatic oil return device 5 when the oil level reaches a certain level or higher.

In the above embodiment, the material of the oil separator is shown to be wire mesh, but the material may be other materials such as Japanese paper or sintered metal.

Moreover, although the case where the oil separation wire mesh is of a two-stage type has been described, it goes without saying that it may be of other multiple stages depending on the combination with the gas rectifier.

As described above, according to this invention, a gas rectifying cylinder is provided in the first oil separating wire mesh to rectify the flow of refrigerant gas and prevent the diffusion of refrigerating machine oil particles.
Since the second oil separation wire gauze having a mesh size smaller than that of the oil separation wire gauze is provided, there is an effect that highly accurate oil separation can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional side view showing a conventional oil separator, and FIG. 2 is a cross-sectional side view showing an embodiment of this invention. In the figure, 1 is a container, 2 is a gas inlet pipe, 3 is a gas outlet pipe, 4a is a first oil separation wire mesh, 5 is an automatic oil return device, 8a is a gas rectifier tube, and 9 is an oil pit. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A container having a refrigerant gas inlet pipe and a refrigerant gas outlet pipe for discharging the refrigerant gas sucked in from the refrigerant gas inlet pipe; A cylindrical first oil separation wire mesh that separates refrigerating machine oil; and a cylindrical first oil separation wire mesh that is disposed on the outer peripheral surface side of the first oil separation wire mesh and rectifies the flow direction of the refrigerant gas that has passed through the first oil separation wire mesh. A gas rectifying cylinder and a second oil separation wire mesh having a smaller mesh than the first oil separation wire mesh are provided, and the refrigerant gas that has passed through the first oil separation wire mesh is transferred to the refrigerant through the second oil separation wire mesh. An oil separator characterized in that the oil is guided to a gas outlet pipe.