KR200420521Y1 - Ball Valve having a Refrigerant Injection Apparatus - Google Patents

Abstract

The present invention relates to a ball valve installed in the refrigerating or freezing system to be opened and closed while minimizing the pressure loss loss, and more particularly to a ball valve integrally formed with a refrigerant injection device.

To this end, the present invention is a refrigerant injection device is formed on either side of the ball valve, the same direction as the circulation path and the angle of 30 to 60 ° from the horizontal plane, the refrigerant injection device is connected to the inside of the main body of the ball valve through the step portion A refrigerant inlet having a mounting hole formed therein, which is hermetically screwed into the installation hole, and has a hole having a diameter the same as or similar to that of the pipe of the installation hole; A core and a cap for protecting the refrigerant inlet while preventing foreign matter from entering the hole of the refrigerant inlet.

Description

Ball valve having a refrigerant injection device integrally {Ball Valve having a Refrigerant Injection Apparatus}

1 is a plan view of a ball valve integrally formed with a refrigerant injection device according to an embodiment of the present invention.

Figure 2 is a side cross-sectional view of the ball valve integrally formed with a refrigerant injection device according to an embodiment of the present invention.

 [Explanation of symbols on the main parts of the drawings]

1: ball valve for refrigerant 10: circulation path

100: body 101: inlet

102 outlet 110 stem

200: refrigerant injection device 210: mounting hole

211: step 220: refrigerant inlet

221: hole 230: core

240: cap

The present invention relates to a ball valve installed in the refrigerating or freezing system to be opened and closed while minimizing the pressure loss loss, and more particularly to a ball valve integrally formed with a refrigerant injection device.

The refrigeration and refrigeration industry is growing rapidly due to climate change such as improvement of national income and global warming, and it is applied not only to conventional food but also to high technology fields such as medicine, superconductor and semiconductor.

In refrigeration and refrigeration systems, airtightness is essential under various refrigerant environments. Unlike shutoff valves, there are many ball-type valves that can be easily opened and closed without loss of pressure drop due to flow path changes.

However, in the current refrigeration and refrigeration system, there is an inconvenience in that an injection device for injecting refrigerant is provided separately from the ball valve used in the system.

Of course, in a refrigerating and freezing cycle, a service valve (unlike a ball valve) in which an inlet is integrally formed is provided in a circulation path formed between a condenser and an expansion valve and an evaporator and a compressor so that refrigerant is supplied to the circulation path. It is intended to replenish supplied or consumed refrigerant.

This is applied to the inlet of the service valve which is installed to supply refrigerant to the circulation path between the condenser and expansion valve of the refrigerating and freezing cycle and the circulation path between the evaporator and the compressor or to replenish the consumed refrigerant (or fluid such as refrigeration and freezing oil). It is configured to block the core cap after supplying the refrigerant through the installed core (core).

In the above service valve, refrigerant leakage at the refrigerant inlet can be prevented by the use of the core cap. However, the spindle and the main body of the service valve are fastened for a long time due to vibration caused by the refrigerant compression action of the compressor. The likelihood of leakage of refrigerant injected through the thread gap is significantly increased.

In addition, such a service valve forms a groove in the inner wall of the spindle accommodation portion to prevent the falling of the spindle accommodated in the spindle accommodation portion and inserts a spindle drop preventing ring into the groove, but the ring is, for example, from the groove. If it is dislodged, the spindle is more likely to fall out of the spindle receiving portion, which causes a failure.

In addition, since the injection port is installed on the side of the service valve, there is a problem of receiving ambient interference when the refrigerant is injected.

Therefore, the present inventors have come to develop a ball valve integrally formed with a refrigerant injection device to facilitate refrigerant injection by integrally forming the refrigerant injection device in the ball valve to improve the above problems.

An object of the present invention is to provide a ball valve integrally formed with a refrigerant injection device to ensure the ease of refrigerant injection, and to prevent the refrigerant leakage to be completely formed by integrally forming the refrigerant injection device in the ball valve.

Another object of the present invention is to place the refrigerant injection device in the same direction as the circulation path coupled to the ball valve, to facilitate the installation of the ball valve and to inject the refrigerant without interference from the circulation path.

Another object of the present invention is to provide a compact yet easy to inject the refrigerant by not expanding the body of the ball valve.

The above and other objects of the present invention can be achieved by the present invention described below.

The present invention relates to a ball valve installed in the refrigerating or freezing system to be opened and closed while minimizing the pressure drop loss, characterized in that the refrigerant injection device is integrally formed on either side of the ball valve.

The refrigerant injection device is located at the intersection of the main body of the ball valve and the stem installed to adjust the flow of the refrigerant flowing in the ball valve, and formed at an angle of 30 to 60 ° from the same direction and horizontal plane as the circulation passage It is characterized by.

The refrigerant injection device is installed in the stepped portion is formed to be connected to communicate with the inside of the body of the ball valve;

A refrigerant inlet tightly screwed to the installation hole and having a hole having a diameter the same as or similar to that of the pipe of the installation hole;

A core installed in the airtight hole of the refrigerant inlet to facilitate refrigerant injection;

Caps for protecting the refrigerant inlet while preventing foreign matter from entering the hole of the refrigerant inlet.

The body of the ball valve is made of brass excellent in corrosion resistance, the stem is characterized in that made of stainless steel to resist repeated fatigue.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a plan view of a ball valve integrally formed with a refrigerant injection device according to an embodiment of the present invention, Figure 2 is a side cross-sectional view showing a ball valve integrally formed with a refrigerant injection device according to an embodiment of the present invention to be.

The main body 100 of the ball valve 1 having the refrigerant injection device integrally formed according to the present invention is made of brass to prevent corrosion, and the stem 110 installed to control the amount of refrigerant is resistant to repetitive fatigue. It is made of stainless race.

As shown in FIG. 2, the ball valve main body 100 has an inlet 101 through which a coolant flows in and a discharge port 102 through which the coolant is discharged, and a stem for controlling the flow of the coolant therebetween. 110 is installed vertically.

In addition, as shown in FIG. 1, the refrigerant injecting the refrigerant into the ball valve 1 having the refrigerant injection device integrally in one of the ball valve bodies 100 in the circulation direction of the refrigerant, that is, in the same direction as the circulation path 10. The device 200 is installed.

As shown in FIG. 2, the refrigerant injection device 200 is located at a point where the ball valve body 100 intersects the stem 110, and is 30 to 60 ° from the same direction and horizontal plane as the circulation path 10. Is formed at an angle.

2, the refrigerant injection device 200 includes an installation hole 210 having a stepped portion 211 formed therein so as to be connected to the ball valve body 100 and communicate with the inside of the enlarged view of the main part of FIG. 2. The refrigerant inlet 220 having a hole 221 of the same or similar diameter as the conduit of the pipeline is hermetically fastened by screws or separate fixing means.

Meanwhile, the core 230 is installed in the hole 221 of the refrigerant inlet to prevent leakage of the refrigerant in the valve, and the refrigerant inlet is prevented from introducing foreign matter into the hole of the refrigerant inlet at the inlet of the refrigerant inlet. Cap 240 to protect 220 is fastened.

The present invention as described above, when the refrigerant injection device is formed integrally with the ball valve can obtain the following effects.

First, the refrigerant can be easily injected without the interference of the circulation path during the refrigerant injection, it is possible to prevent the leakage of the refrigerant.

Second, since the refrigerant injection device is located in the same direction as the circulation path coupled to the ball valve, the ball valve can be easily installed in the refrigerating or freezing system.

Third, by implementing a compact structure that does not expand the body of the ball valve while integrally forming the refrigerant injection device, compared to the conventional need to install a separate refrigerant injection device to simplify the overall system structure and ease of management It becomes possible.

Simple modifications or variations of the present invention may be readily used by those skilled in the art, and all such modifications or changes may be regarded as included in the scope of the present invention.

Claims (4)

A ball valve installed in a refrigeration or freezing system to open and close with a minimum loss of pressure, A ball valve integrally formed with a refrigerant injection device, characterized in that the refrigerant injection device is formed integrally on either side of the ball valve. The method of claim 1, The refrigerant injection device is located at the point where the main body of the ball valve and the stem installed to control the flow of the refrigerant flowing in the ball valve is crossed, and formed at an angle of 30 to 60 ° from the same direction and horizontal plane as the circulation passage Ball valve formed integrally with the refrigerant injection device, characterized in that. The method according to any one of claims 1 to 2, The refrigerant injection device is installed in the stepped portion is formed to be connected to communicate with the inside of the body of the ball valve; A refrigerant inlet tightly screwed to the installation hole and having a hole having a diameter the same as or similar to that of the pipe of the installation hole; A core installed to be airtight in the hole of the refrigerant inlet to facilitate refrigerant injection; And a cap for protecting the refrigerant inlet while preventing foreign matter from entering the hole of the refrigerant inlet. The method according to any one of claims 1 to 2, The ball valve main body is made of brass excellent in corrosion resistance, the stem is a ball valve integrally formed with a refrigerant injection device, characterized in that made of stainless steel so as to resist repeated fatigue.

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