JPS5822060Y2 - Condenser for refrigerator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a refrigerant bale condenser that uses a refrigerant having a higher specific gravity than oil.

In conventional refrigerators, it is common to form an oil circuit using an oil separator and an oil cooler.

Refrigerators having such oil circuits have the drawback that the piping connecting each device is complicated, and since these devices have a considerable volume, the space factor for installation is limited.

The purpose of the present invention is to reduce the space factor by combining the three-divided oil separator, oil cooler, and condenser into one compact device.

That is, an element for oil separation is inserted into the condenser, and the separated oil is dropped into the upper layer of the condensed liquid to cool it and send it to each device.

The present invention will be explained below based on an embodiment shown in the drawings.

A cooling pipe 2 is arranged within the container 1.

The lower pipe portion of the cooling pipe 2 is a bare pipe.

A refrigerant gas outlet 3 is provided at the top, and a liquid refrigerant outlet 4 is provided at the bottom.

A large number of cooling pipes 2 are arranged inside the container 1, through which cooling water passes.

A collision plate 5, which is an oil separation member, is arranged below the refrigerant gas port 3 which opens into the refrigerant gas atmosphere so as to face the opening, and the collision plate 5 has one end extending upward. A gap 9 is formed between the topmost inner wall of the container 1 and the uppermost inner wall of the container 1.
The lower end reaches a liquid pool 6 at the bottom.

Reference numeral 7 designates an oil extraction pipe which opens at a midway position between the top and bottom of the container, has one end in contact with the oil layer 8, and the other end is connected to an external device.

This effect will be explained.

The refrigerant gas and oil entering from the refrigerant gas port 3 collide with the collision plate 5 to separate the oil, and the refrigerant gas passes through the gap 9, is cooled by the cooling pipe 2, becomes liquefied, and then condenses in the lower part.

The condensed liquid refrigerant is sent from the outlet 4 to external equipment.

On the other hand, the oil separated by the collision plate 5 descends along the collision plate 5 and is collected in the upper part of the liquid refrigerant layer 10.

This is because while liquid refrigerant usually has a specific gravity of 1.1 to 1.15, oil has a specific gravity of 0.85 to 0.9, so light oil accumulates on top of the liquid refrigerant.

The oil accumulated in the upper part is sent to the outside through the extraction pipe 7.

With this type of system, heat is exchanged between the cooled refrigerant liquid and the oil, and a cooling effect can also be obtained.

Note that an oil separation element such as a demister may be used instead of the collision plate 5.

Furthermore, the cooling pipe 2 generally uses a cooling pipe with an uneven surface, but it is effective to use a bare pipe for the cooling pipe placed in the oil layer to prevent oil from accumulating on the surface unevenness and reducing the cooling performance. Thick.

Normally, a concave-convex tube is used to increase the heat transfer area, but in order to exchange heat with oil, it is necessary to use a tube with no surface concavities or convexities, since oil accumulates on the surface concavities and convexities and the effective heat transfer area decreases. Use a tube.

According to this invention, the oil separator and oil cooler, which previously had to be installed separately from the condenser, can now be integrated into one, resulting in a compact condenser, and when installing equipment, It has practical effects such as fewer installation pillars.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a condenser for a refrigerator showing an embodiment of the present invention. 1... Container, 2... Cooling pipe, 3...
...Refrigerant gas inlet, 4...Liquid refrigerant outlet, 5.
...Collision plate, 6...Liquid pool, 7...
...Oil extraction pipe, 8...Oil layer, 9...
Top clearance, 10...Liquid refrigerant layer.

Claims (1)

[Scope of utility model registration request] In a refrigerating machine condenser, high-temperature, high-pressure refrigerant gas, which is a refrigerant with higher specific gravity than oil, is condensed and liquefied by heat exchange with a cooling fluid, and the liquefied refrigerant is stored in the lower part of the container. An oil separation member is disposed at an angle facing the opening of the refrigerant gas inflow path opened inside, and the lower end of the oil separation member is extended to reach the liquid reservoir of the container, and the upper end is extended. The lower part of the cooling fluid passage pipe, which is extended diagonally upward to form a gap with the inner wall of the uppermost part of the container and is arranged in a heat exchange manner inside the container, is a bare pipe, and A condenser for a refrigerator, characterized in that an oil extraction pipe is connected and opened at an intermediate position between the upper and lower sides of the condenser.