KR200224523Y1 - Structure for preventing refrigerant from leaking in service valve of refrigerator - Google Patents

Abstract

The purpose of the present invention is to provide a refrigerant leakage preventing structure of a service valve for a refrigerating machine that prevents the leakage of refrigerant as well as blocking the flow path by making the tip of the supply pipe closely contacted with the bottom of the spindle by surface contact. It is to provide, the valve body having a refrigerant inlet, the first supply pipe, the second supply pipe and the spindle insertion opening formed in all directions so as to communicate with each other, it is installed in the refrigerant inlet to allow the refrigerant to be injected in accordance with opening and closing In the refrigerant leakage preventing structure of the service valve for a refrigeration machine comprising a core for preventing the discharge of the refrigerant, and a spindle which is fastened to the spindle insertion opening to switch the flow path of the first supply pipe and the second supply pipe in accordance with rotation. The lower end is composed of an inclined surface and at the tip of the first supply pipe to be in surface contact with the inclined surface. It is characterized in that the inclined jaw is further formed.

Description

Refrigerant leak prevention structure of service valve for refrigeration equipment {STRUCTURE FOR PREVENTING REFRIGERANT FROM LEAKING IN SERVICE VALVE OF REFRIGERATOR}

The present invention relates to a refrigerant leakage preventing structure of a service valve for a refrigerating machine, and in particular, the refrigerant leakage of the service valve for a refrigerating machine is improved by improving the close structure of the spindle and the supply pipe installed in the service valve and switching the direction of the flow path according to the rotation thereof. The prevention structure is related.

In general, a refrigeration cycle of a refrigerating device includes a compressor for compressing and discharging the refrigerant to be sucked at a high pressure, a condenser for condensing the refrigerant discharged from the compressor by heat radiation, an expansion valve for expanding the condensation refrigerant supplied from the condenser, And an evaporator which makes the blower air cold by evaporating the refrigerant supplied from the expansion valve by heat exchange with the blower air. In such a refrigeration cycle, a service valve is installed in the refrigerant passage installed in the condenser and the expansion valve and the refrigerant passage installed between the evaporator and the compressor to fill the refrigerant or replenish the insufficient refrigerant.

As shown in FIG. 1, the service valve has a valve body 1 having refrigerant inlets 10, first supply pipes 12, second supply pipes 14, and spindle insertion holes 16 formed in all directions to communicate with each other. And a core 20 installed at the refrigerant inlet 10 to allow refrigerant to be injected upon opening and closing, and to prevent discharge of the injected refrigerant, and fastened to the spindle insertion hole 16 to rotate. It comprises a spindle 30 for switching the flow path of the first supply pipe 12 and the second supply pipe (14). In addition, the core cap 22 is detachably fastened so as to prevent foreign substances from flowing into the front end of the refrigerant inlet 10 and to protect the core 20, and the cap ( 40) is detachably fastened.

In the conventional service valve configured as described above, the lower end of the spindle 30 and the front end of the first supply pipe 12 are in close contact with each other to open and close the flow path, but this close contact is secured by being in close contact with the line contact. There was a problem that the refrigerant is leaked because the flow path could not be blocked.

The present invention has been made in consideration of the above-described conventional problems, the front end of the supply pipe which is in close contact with the lower end of the spindle to be in close contact by the surface contact to ensure the flow path as well as to prevent the leakage of the refrigerant An object of the present invention is to provide a refrigerant leakage preventing structure of a service valve.

The present invention for achieving the above object, the valve body having the refrigerant inlet, the first supply pipe, the second supply pipe and the spindle insertion port formed in all directions so as to communicate with each other, so that the refrigerant is injected in accordance with the opening and closing of the refrigerant inlet In addition, the refrigerant leakage preventing structure of the service valve for a refrigeration machine comprising a core for preventing the discharge of the injected refrigerant, and a spindle which is fastened to the spindle insertion hole and switches the flow path of the first supply pipe and the second supply pipe as the rotation is performed. In addition, the lower end of the spindle is made of an inclined surface and characterized in that the inclined jaw is further formed at the tip of the first supply pipe to be in surface contact with the inclined surface.

According to the refrigerant leakage preventing structure of the service valve for a refrigerator device of the present invention configured as described above, the end of the supply pipe in contact with the lower end of the spindle to be in close contact by the surface contact can be surely shut off the flow path as well as the leakage of refrigerant This can be prevented.

1 is a cross-sectional view showing a conventional service valve for a refrigerator

2 is a cross-sectional view showing a service valve for a refrigeration apparatus to which the refrigerant leakage preventing structure is applied according to the present invention.

<Explanation of symbols for main parts of the drawings>

100-valve body

110-Refrigerant inlet 112-First supply pipe

114-2nd Supply Line 115-Inclined Jaw

116-spindle insert 120-core

122-core cap 130-spindle

131-Slope 134-Caps

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

2 is a cross-sectional view showing a service valve for a refrigerating apparatus to which a refrigerant leakage preventing structure according to the present invention is applied.

The service valve, the refrigerant inlet 110 formed in all directions to communicate with each other, the first supply pipe 112 is connected to the refrigerant pipe 111, the second supply pipe 114 is connected to the refrigerant pipe 111 and the spindle insertion hole ( A valve body 100 having a 116 and a core 120 installed at the refrigerant inlet 110 to allow refrigerant to be injected upon opening and closing, and to prevent discharge of the injected refrigerant, and the spindle insertion hole. Is coupled to the 116 and the spindle 130 for switching the flow path of the first supply pipe 112 and the second supply pipe 114 in accordance with the rotation, and to prevent foreign matter from entering and to protect the core 120 A core cap 122 is detachably fastened to the front end of the refrigerant inlet 110, and a cap 134 is detachably fastened to the front end of the spindle inlet 116. The refrigerant inlet 110 and the first supply pipe 112 is preferably arranged on the same line and the second supply pipe 114 and the spindle insertion hole 116 is preferably arranged on the same line. In addition, the spindle 130 is formed with a socket 132 into which a wrench or the like can be inserted to fasten it to the spindle insertion hole 116 or to release it from the spindle insertion hole 116.

Accordingly, the cap 134 is removed from the spindle insertion hole 116 and the wrench is inserted into the socket 132 of the spindle 130 while the spindle insertion hole 116 is opened. When the lower end of the c) blocks the second supply pipe 114, the refrigerant inlet 110 does not communicate with the second supply pipe 114, but only through the first supply pipe 112. 1 flows only toward the supply pipe (112). In addition, since the refrigerant inlet 110 communicates with both the first supply pipe 112 and the second supply pipe 114 in a state in which the spindle 130 is rotated so that the lower end of the spindle 130 does not block the second supply pipe 114. The refrigerant injected from the refrigerant inlet 110 flows toward the second supply pipe 114 as well as the first supply pipe 112.

Thus, the inclined surface 131 is formed at the lower end of the spindle 130 for opening and closing the flow path, and the inclined jaw 115 is formed at the tip of the second supply pipe 114 to contact the inclined surface 131. Since the inclined surface 131 and the inclined jaw 115 are in surface contact with each other, it is possible to reliably maintain the close contact state and also to prevent the leakage of the refrigerant.

Next, the operation of the refrigerant leakage preventing structure of the service valve for a freezer according to the present invention configured as described above will be described.

In order to charge the refrigerant, the cap 134 is first removed from the spindle insert 116 and the wrench insert 116 is inserted into the socket 132 of the spindle 130 while the spindle insert 116 is opened. The spindle 130 is connected to the first supply pipe 112 but not to the second supply pipe 114, or the refrigerant inlet 110 communicates with both the first supply pipe 112 and the second supply pipe 114. After turning, the cap 134 is fastened to the spindle insertion hole 116 again, and then the core 120 is opened to inject the refrigerant through the refrigerant injection hole 110.

At this time, when the lower end of the spindle 130 blocks the second supply pipe 114 to block the supply of the coolant toward the second supply pipe 114, the inclined surface 131 formed at the lower end of the spindle 130 and the The inclined jaw 115 formed at the distal end of the second supply pipe 114 is in contact with each other and has a close contact with each other, so that the refrigerant does not leak toward the second supply pipe 114 and a sure blocking effect is obtained.

In the refrigerant leakage preventing structure of the service valve for a freezer according to the present invention configured as described above, the front end of the supply pipe that is in close contact with the lower end of the spindle is in close contact by the surface contact to shut off the refrigerant to ensure the opening and closing of the flow path. Of course, there is an effect that can prevent the leakage of the refrigerant.

Claims (1)

A valve body having a refrigerant inlet, a first supply pipe, a second supply pipe, and a spindle insertion hole formed in all directions so as to communicate with each other; In the refrigerant leakage preventing structure of the service valve for a refrigeration machine comprising a core for fastening, and a spindle which is fastened to the spindle insertion hole and which switches flow paths of the first supply pipe and the second supply pipe according to rotation. The lower end of the spindle is made of an inclined surface and the refrigerant leakage preventing structure of the service valve for a refrigeration machine, characterized in that the inclined jaw is further formed at the tip of the first supply pipe to be in surface contact with the inclined surface.