JP3022276U - Gas charger with air purge valve - Google Patents

Abstract

(57) [Summary] [Purpose] An air purge device for gas charging that can be performed safely and easily. [Structure] An air purge device having a valve that opens and closes by a push part is attached to a gas charger.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas charger for filling a cooler device with a gas such as a CFC gas or a liquefied gas cylinder.

[0002]

[Prior art]

 For air venting when filling a conventional cooler device with gas, open the valve installed in the gas charger before connecting the connecting pipe at the other end of the gas charger to which the Freon gas can is connected to the cooler compressor. The stop valve provided at the center of the pipe at the tip of the pipe is pushed to open it to release CFC gas from the tip of the connecting pipe, and while purging the air inside the connecting pipe, it is connected to the compressor.

[0003]

[Problems to be solved by the device]

 Conventionally, the above-described filling work is performed, but connecting to the compressor while performing air purging may cause freon gas to splash on the worker's hand or body and cause frostbite.

Further, there are some freon cans that are opened and vaporized and sent to the compressor as gas to be charged. However, if this can is not handled vertically and is laid down or turned upside down, the freon becomes gas. There is a risk that the liquid will not be turned into liquid and will be fed to the device as it is, resulting in damage to the device.

[0005]

[Means for Solving the Problems]

 In the present invention, an air purging device is provided on the gas charger so that air can be purged after connecting the compressor of the cooler to the charger. As an air purging device, a valve that is constantly subjected to spring pressure, etc., can be pushed from the outside, and the air inside the connecting pipe can be discharged from the purge port by the gas pressure from the compressor. After air purging, the freon can and the gas charger are connected by a known method, for example, by inserting a cutter provided at the coupling port of the freon can of the gas charger into the freon can mouth to connect the freon can and the cooler. It is connected to the compressor via a gas charger, and there is no air between them, so there is no risk that air will mix into the compressor and cooling efficiency will drop.

Further, a hanging tool such as a chain and a rope is attached to the gas charger so that the vertical direction can be always maintained. As a result, the verticality of the freon can, which is connected so as to hang down from the gas charger, is maintained, and the stable gasification of freon and the risk of damaging the compressor by being fed to the compressor as a liquid are eliminated.

[0007]

【Example】

 Next, description will be given with reference to the drawings.

FIG. 3 shows a conventional gas charger, which has a connection port 11 to a CFC can in the lower part, an attachment port 13 for the charge hose 2 (FIG. 1) in the side part, and a handle 14 in the upper part. By rotating, the valve 15 for the connection port 11 to the CFC can attached to the lower end of the handle shaft is opened, and the ventilation passage between the mounting ports 13 for feeding the CFC gas is opened from this connection port 11. In the conventional air purging work, the gas charger is first opened while the cutter 16 formed in the center of the inside of the lower connection port 11 is inserted into or swung into the opening of a freon can (not shown). Connect at the same time. Next, the handle 14 is rotated to open a ventilation path to the air supply attachment port 13, and the other end of the charge hose 2 shown in FIG. 1 attached to this attachment port 13, that is, a compressor of a cooler (not shown). The stop valve 18 in the charge nipple 17 formed at the connection part to (1) is connected to the compressor while performing air purge while manually pushing.

FIG. 1 shows the gas charger of the present invention.

As in the prior art, the connection port 11 to the CFC can is provided at the bottom, the cutter 6 is provided inside the connection port, and the attachment port 3 for the charge hose 2 is provided at the side. The difference from the conventional one is that an air purging device A is attached to the upper part instead of the handle. This air purging device has a valve 4 which is biased by a spring 5 and seals the air passage a of the main body. This valve 5 is fixed to the lower end of a shaft 7, and the other upper end becomes a push part 8. And is projected to the outer part b. An air purge port 9 is formed on a side portion of the air purge device so as to be connected to an internal auxiliary ventilation passage b.

With this structure, first, the connection portion 10 of the end of the charge hose 2 with the compressor of the cooler is connected, and the push portion 8 of the air purge device is pushed. After the seal is released, the air in the charge hose 2 is exhausted from the purge port 9 by the gas pressure of the compressor, and the air is purged. After that, when the pushing pressure of the push portion 8 is released, the valve 4 seals the auxiliary ventilation passage b by the pressure of the spring 5 and the gas pressure from the compressor, and the air purge is stopped. Next, the lower connection port 1 is attached to the chlorofluorocarbon can so that the chlorofluorocarbon gas passes through the main body ventilation path a and is supplied to the compressor by the charge hose 2.

Further, in the present invention, a suspending tool B such as a hanging chain or a rope is provided at an arbitrary position of the gas charger, for example, the connection port 3 of the charge hose 2. At the other end, a mounting portion is formed on the inner surface of the hood of the automobile.

[0013]

[Effect of device]

 Since the present invention is configured as described above, the air purging work can be easily performed simply by pushing the push section, and by installing the lifting tool B, the self weight of the gas can or the charge hose can be used. The gas can is always oriented with its bottom facing downward, and it does not lie on its side or upside down, so the gasification of chlorofluorocarbons is stable, and the chlorofluorocarbons are sent to the compressor as liquid and damage the equipment. It disappears.

[Brief description of drawings]

FIG. 1 is an overall view showing the present invention in a partial cross section.

FIG. 2 is a schematic view showing a mechanism of an air purging device.

FIG. 3 is a partial cross-sectional view showing a conventional example.

[Explanation of symbols]

 1 Freon can connection port 2 Charge hose 3 Mounting port 4 Valve 5 Spring 6 Cutter 7 Shaft 8 Push part 9 Air purge port 10 Connection part

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] September 21, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Name of device

[Correction method] Change

[Correction content]

[Title of device] Gas charger with air purge valve

Claims (1)

[Scope of utility model registration request] 1. A gas charger having a connection port to a freon can at a lower portion and a charge hose attachment port to a compressor of a cooler at a side portion, which is connected to a main body ventilation passage connecting the connection port and the attachment port at an upper portion thereof. It has an auxiliary ventilation passage, which is fixed to the lower end of the shaft of the push part protruding to the outside, and is always sealed by a valve biased by spring pressure. An air purging device is provided so that the air purging is performed from the air purging port to which the auxiliary passage is connected by pushing, and the whole device is hung by a suspending tool. Gas charger with purge valve.