KR960006506Y1 - Service valve for refrigerating machines - Google Patents

Abstract

No content

Description

Service valves for freezers

1 is a longitudinal longitudinal cross-sectional view of the service valve for a refrigerator according to the present invention

* Explanation of symbols for main parts of the drawings

1 body 2 valve body

10: injection hole 11: the locking jaw

12: seal 13: seal cap

20: spindle receiving portion 21: spindle

22: sheet 23: packing

24: grand 25: upper valve body

26: lower valve body 41: anvil

30: one side supply line 40: other side supply line

The present invention relates to a service valve for replenishing or supplying refrigerant to a separate air conditioner or other refrigeration equipment, and in particular, prevents the injected refrigerant or refrigerant from leaking to the outside through a screw gap between the inlet and the spindle due to pressure. A service valve for a refrigerating machine is provided.

In general, the refrigeration cycle of the refrigeration system is composed of a compressor that compresses the refrigerant in the gas state and helps the circulation of the refrigerant, a condenser to condense and liquefy the gas refrigerant compressed in the compressor, and an expansion valve and an evaporator. In the refrigerating cycle, service valves are respectively installed in the circulation path between the condenser and the expansion valve and the circulation path between the evaporator and the compressor to supply or replenish the consumed refrigerant on the circulation path.

As described above, the service valve installed to supply the refrigerant on the circulation path between the condenser and the expansion valve of the refrigerating cycle and the circulation path between the evaporator and the compressor or to replenish the consumed refrigerant supplies the refrigerant through a core installed in the inlet. After that, the valve is configured to block the core cap. The valve having such a configuration causes the core cap to be loosened for a long time due to the vibration of the compressor, or the refrigerant or refrigerant oil injected through the screw gap between the spindle and the main body leaks. As a result, the refrigerant is frequently replenished, and the main cause of breakdown is caused.

In view of the above problems, the object of the present invention is to prevent leakage to the inlet port without installing a core installed in the inlet port in order to prevent leakage of the injected refrigerant or refrigerant oil. In another aspect, the present invention provides a service valve for a refrigerating machine, which can completely prevent leakage between the thread gap where the main body and the spindle are coupled.

The above object is a service valve for a refrigerating machine composed of a main body having two supply pipes, a refrigerant inlet port and a spindle receiving part, and a plurality of caps and tightening nuts, wherein the screw is coupled to the spindle receiving part of the main body so as to move up and down The upper and lower valve body is provided at the end and is integrally formed on the inner surface of the main body of the intersection where the spindle and the inlet and the supply line intersect each other by the seat and the packing and the gland so as to maintain the spindle receiving portion and the airtightness. It is equipped with a circular locking jaw to which the upper valve of the lower end of the spindle is coupled when it is raised, and an anvil which is accommodated in the lower part of the other supply line and the lower valve body is coupled when the spindle is lowered. And spindle receptacle and other supply line can be opened and closed selectively. Providing a refrigerator appointed service valve, characterized in that which is to be achieved hameuroseo.

Hereinafter, a preferred embodiment of the service valve for a freezer according to the present invention by the accompanying drawings as follows.

Figure 1 is a central longitudinal cross-sectional view of the service valve for a refrigerator according to the present invention.

As can be seen in the figure, the main body 1 of the service valve for a refrigerating machine according to the present invention has an inlet 10 for injecting a coolant and a spindle for selecting a supply line for the coolant injected into the inlet 10. The spindle receiving portion 20 and the two supply pipes 30 and 40 which can be accommodated in are integrally provided.

The spindle 21, which is screwed to move up and down to the spindle receiving portion 20 provided in the main body 1, has a valve body 2 integrally formed at a lower end thereof, and the spindle 21 is seated. 22 and a plurality of packings 23 and glands 24 fitted to the spindle 21 to prevent separation of the packings 23 so as to maintain airtight with the spindle receiving portion 20. It is accommodated so that the spindle receiving portion 20 and the airtightness by the gland 24, the valve body 2 provided at the end of the spindle 21 is a conical upper valve body 25 and the lower valve body (26) is integrally formed so that it may be up-down symmetrical.

On the inner surface of the main body 1 of the intersection portion where the injection port 10 and the supply line 30 and 40 cross each other, a circular locking jaw 11 is formed integrally with the main body 1, and the locking jaw 11 is formed. When the spindle 21 is raised, the upper valve body 25 at the lower end of the spindle 21 is coupled to the refrigerant or refrigeration supplied by closing the passages toward the inlet 10 and the spindle accommodating part 20. Oil can be prevented from leaking in the direction of the injection port 10 and the spindle receiving portion (20).

A cylindrical anvil 41 is fixed and accommodated in the lower part of the other supply pipe 40 among the supply pipes 30 and 40, and the anvil 41 is lowered when the spindle 21 is lowered. Since the lower valve body 26 integrally formed at the lower end of the spindle 21 is coupled to the upper end of the anvil 41, the other supply line 40 is closed to cool the refrigerant injected into the inlet 110 to one side supply line. Only 30 can be supplied. Therefore, when the spindle 21 is raised, the upper valve body 25 closes the passage in the inlet 10 and the spindle accommodating part 20 direction, and the refrigerant supplied is the inlet 10 and the spindle accommodating part 20. To prevent leakage in the direction, and when the spindle 21 is lowered, the lower valve body 26 is coupled to the upper end of the anvil 41, so that the refrigerant is injected into the inlet 10 by closing the other supply line 40. Is to be supplied only to one side supply pipe 30 is configured to be able to selectively open and close the injection port 10 and the other side supply pipe (40).

A seal 12 is coupled to the tip of the injection hole 10, and the seal 12 seals the injection hole 10 completely by a seal cap 13, which seals the seal 12 and the seal cap. 13 is not intended to prevent leakage of the refrigerant into the inlet 10, but merely to assist in preparation for the failure of the spindle 21, the fundamental purpose of the inlet by the exposure of the inlet 10 (10) to prevent foreign matter from entering. Therefore, in the service valve for a refrigerator according to the present invention, it is not necessary to install a separate core (core) inside the inlet 10 in order to prevent refrigerant leakage into the inlet 10 as in the prior art.

Referring to the method of using the service valve for a refrigerator according to the present invention configured as described above are as follows.

First, in order to supply the refrigerant to only one side supply line 30, as shown in FIG. 1, the seal cap 13 installed in the inlet 10 is opened and the seal 12 is separated. When the refrigerant is injected into the inlet 10, the lower valve body 26 at the lower end of the spindle 21 is coupled to the upper end of the anvil 41 to close the other supply pipe 40, so the refrigerant is supplied to the one side supply pipe 30. Only to be injected, in order to inject the refrigerant into both supply pipes 30 and 40, the lower valve body 26 which is closing the other supply pipe 40 by the rotation of the spindle 21 is raised and anvil ( When it is separated from the upper end of 41, the other side supply pipe 40 is also opened so that refrigerant can be injected into both side supply pipes 30 and 40. When the injection of the refrigerant is completed as described above, the valve body 2 is raised by the rotation of the spindle 21 so that the upper valve body 25 crosses the injection port 10 and the supply line 30 and 40 with each other. When coupled to the circular locking jaw (11) formed integrally with the main body (1) on the inner surface of the negative main body (1) closes the passage in the direction of the injection port 10 and the spindle receiving portion 20, the supplied coolant is injected It will be able to prevent the leakage in the direction (10) and the spindle receiving portion (20).

As described above, the service valve of the refrigerating device according to the present invention can prevent leakage to the inlet port without installing a core installed in the inlet port in order to prevent leakage of the injected refrigerant or refrigerant oil in the conventional valve. Of course, the leakage between the main body and the threaded screw thread is also provided with the effect that can be completely prevented.

Claims (2)

A service valve for a refrigerating machine comprising a main body having two supply lines, a refrigerant inlet port and a spindle receiving part, and a plurality of caps and tightening nuts, the screw being movable up and down on the spindle receiving part 20 of the main body 1. A spindle 21 coupled to and provided with a valve body 2 at an end thereof and capable of maintaining airtightness with the spindle receiving portion 20 by means of the seat 22 and the plurality of packings 23 and glands 24, The injection port 110 and the supply line 30 and 40 are integrally formed on the inner surface of the main body 1 of the intersection where they cross each other, and the upper valve body 25 at the lower end of the spindle 21 when the spindle 21 is raised. Is fixed to the lower portion of the other end of the supply line 40, the receiving jaw 11 is coupled to the lower valve body 26 when the spindle 21 is lowered (anvil 41) is coupled The injection hole 10 and the spindle receiving portion 20 and the other side by the shanghaidong of the spindle 21 Freezer grade pipeline appointed service valve, characterized in that which is configured to selectively open and close to 40. According to claim 1, wherein the valve body (2) provided at the lower end of the spindle 21 is a conical upper valve body 25 and the lower valve body 26 is formed integrally formed upside down symmetrically The service valve for a refrigerator.