JPH09250849A - Bomb for temporary storage of refrigerant gas and its application method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To temporarily store refrigerant gas in a bomb without releasing it into air, and return it to a heat pump after repair and replacement by mounting a valve/pipe for releasing and sucking the refrigerant gas on a high pressure pipe and a low pressure pipe of the heat pump. SOLUTION: A fastener 21 for a pressure resistant gas charge hose 19 fixed to a vacuum pump is released, and the hose is fixed to a valve/pipe 8 mounted on a high pressure pipe 5 of a heat pump for discharging and sucking refrigerant gas, and further a bomb 11 and the heat pump are directly connected through the pressure resistant gas charge hose 19. In this case, the interior of the bomb 11 is vacuum and hence the refrigerant gas in the heat pump is sucked into the bomb 11 and is rapidly moved. When gas pressure in the heat pump is reduced, the compressor 1 is actuated, and provided the refrigerant gas is satisfactorily moved, the valve 12 is closed for repair. The refrigerant gas in the bomb 11 can be returned into the instrument so that it is reused without being abandoned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly work of a heat pump device, when a refrigerant gas is introduced and a test operation is performed, when parts do not match or a gas leak occurs, further, Even when the equipment is in operation, when a component malfunctions or gas leaks, do not release the refrigerant gas into the atmosphere, suck it into a gas cylinder and temporarily store it, and replace the heat pump equipment parts. Alternatively, the present invention relates to a refrigerant gas temporary storage cylinder used when returning the refrigerant gas temporarily stored in the gas cylinder to the heat pump device after the completion of repair of the gas leakage point, and a method of using the cylinder.

[0002]

2. Description of the Related Art Conventionally, when a heat pump device is assembled and operated with a refrigerant gas put therein, if there is an improper part or a refrigerant gas leaks, the refrigerant gas is released into the air and then the parts Was replaced or repaired, and new refrigerant gas was introduced. Refrigerant gas recovery devices have been around recently, but they are designed to recover CFC gas from discarded equipment, and anyone can operate it. Because of this, the equipment is large and heavy, cannot be easily brought to the construction site, and is not used during work due to the large amount of gas, and even today, where there is an environmental problem due to CFC gas, The current situation is that refrigerant gas is released into the atmosphere.

[0003]

According to the present invention, when assembling a heat pump device and repairing a faulty part, the refrigerant gas inside the device is not released to the atmosphere with only a gas cylinder, a vacuum pump and a few parts. After transferring to a gas cylinder and temporarily storing it, and repairing the assembly or failure of the equipment, the refrigerant gas temporarily stored in the gas cylinder is returned to the heat pump equipment, and it is intended to prevent obstacles due to release of the refrigerant gas. . Furthermore, when repairing a gas leak from a device that is operating, weigh the refrigerant gas collected in the gas cylinder, and after repairing, move the refrigerant gas in the gas cylinder to the heat pump device to make a shortage. It is also intended to effectively utilize the refrigerant gas by newly replenishing the refrigerant gas in the above amount.

[0004]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, a valve 12 is attached to an upper part of a gas cylinder 11, and a gas suction / exhaust pipe 13 can be opened / closed. Then, a valve / pipe 8 for discharging and sucking refrigerant gas is attached to the high-pressure pipe 5 of the heat pump device, and the low-pressure pipe 6 of the heat pump device is attached.
The valve / pipe 9 for discharging and sucking the refrigerant gas is attached to the above. In the invention according to claim 2, a refrigerant gas flow rate adjusting valve 7 is attached between the expansion valve 3 of the heat pump device and the valve / pipe 9 which releases and sucks the refrigerant gas attached to the low pressure gas pipe 6. The present invention is implemented singly or in addition to the invention according to claim 1. Further, in the invention according to claim 3, the gas suction / exhaust pipe 13 of the gas cylinder 11 and the evacuation pump 20 are connected by a pressure resistant gas charge hose 19, and the valve 12 of the cylinder 11 is connected by a pressure resistant gas charge hose 19. 11 valves 12
To open the vacuum pump 20 and operate the vacuum pump 20,
After the inside of the container 1 is evacuated, the valve 12 of the cylinder 11 is closed to form a cylinder for temporarily storing the refrigerant gas, which has a vacuum inside. The invention according to claim 4 relates to a method of using the cylinder 11 for temporarily storing the refrigerant gas according to claim 3, wherein the gas suction and discharge pipes 13 of the cylinder 11 having a vacuum inside and the high pressure of the heat pump device. The valve 8 for discharging and sucking the refrigerant gas attached to the pipe 5 is connected to the pressure resistant gas charge hose 19, and the valve 1 of the cylinder 11 is connected.
2 is opened and the compressor 1 is operated to quickly move the refrigerant gas in the heat pump device to the cylinder 11. Further, the invention according to claim 5 relates to a method for using the cylinder 11 for temporarily storing the refrigerant gas according to claim 3, wherein the pipe 13 for sucking in and discharging the cylinder 11 storing the refrigerant gas is used.
And a valve / pipe 9 that discharges and sucks the refrigerant gas attached to the low-pressure gas pipe 6 of the vacuumed heat pump device are connected with a pressure resistant gas charge hose 19 to open the gas valve 12 of the cylinder 11 and to connect the expansion valve 3 with the expansion valve 3. The refrigerant gas flow rate control valve 7 attached between the valve and pipe 9 is closed, and the compressor 1 is operated to operate the cylinder 1
The refrigerant gas stored in No. 1 is quickly moved to the heat pump device.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described based on illustrated examples.

FIG. 1 is a schematic view showing the structure of a heat pump device using the refrigerant gas temporary storage cylinder of the present invention, in which a compressor 1, a condenser 2 and an expansion valve 3 are connected by a high pressure gas pipe 5 and expanded. To the heat pump device in which the valve 3, the evaporator 4 and the compressor 1 are connected by the low pressure gas pipe 6, a valve / pipe 8 for discharging and sucking the refrigerant gas is attached to the high pressure gas pipe 5 between the condenser 2 and the expansion valve 3. The valve / pipe 8 for discharging and sucking the refrigerant gas can be used even if it is attached to the high-pressure gas pipe 5 between the compressor 1 and the condenser 2. Similarly, the low pressure gas pipe 6 between the expansion valve 3 and the evaporator 4 is provided with a valve / pipe 9 for discharging and sucking the refrigerant gas. The valve / pipe 9 for discharging and sucking the refrigerant gas attached to the low pressure side can be used even if attached to the low pressure gas pipe 6 between the evaporator 4 and the compressor 1. Further, the valves and pipes 8 and 9 for discharging and sucking the refrigerant gas are manufactured integrally, and it is easy to use what is called a service valve and which is commercially available. However, even in the case of only the pipe whose end is blocked, The same applies when the part that acts as a valve is fixed and this part is opened and closed. In addition, the valve and pipe 8 for discharging and sucking this refrigerant gas,
9 can be used not only for discharging and sucking the refrigerant gas, but also for vacuuming the inside of the heat pump device, attaching a pressure gauge, and the like. Further, a refrigerant gas flow rate adjusting valve 7 is attached between the expansion valve 3 and the valve / pipe 9 attached to the low-pressure gas pipe 6 for discharging and sucking the refrigerant gas. The refrigerant gas flow rate control valve 7 may be mounted between the expansion / valve 3 and the valve / pipe 8 that discharges and sucks the refrigerant gas that is mounted on the high-pressure gas pipe 5, and is installed on both the low-pressure side and the high-pressure side. May be attached. As the refrigerant gas flow rate adjusting valve 7, a valve / pipe 8 or 9 for discharging and sucking the refrigerant gas may be integrally manufactured.

FIG. 2 shows a cylinder for temporarily storing a refrigerant gas, in which a valve 12 is attached to an upper portion of the cylinder 11, a refrigerant gas is sucked, and a discharge pipe 13 is opened and closed.
The valve 12 and the refrigerant gas suction and discharge pipe 13 are made detachable, and a dustproof wire net (including a strainer) 15 is attached between them. If necessary, a gas pipe or gas cylinder service valve 16 is attached to the lower portion of the valve 12, and a pressure gauge 17 is attached to the tip thereof.

As shown in FIG. 3, a pressure resistant gas charge hose 19 and a vacuum pump 20 are prepared, and the cylinder 11 and the vacuum pump 20 are connected by the pressure resistant gas charge hose 19, but both ends of the hose are stopped. Fix with tool 21. Open the valve 12 of the cylinder 11 to evacuate the pump 2
0 is operated to evacuate the inside of the cylinder 11. Pressure gauge 1
Check the degree of vacuum of the cylinder 11 with 7 and close the valve 12,
The cylinder for temporarily storing the refrigerant gas according to the present invention.

FIG. 4 shows a state in which the refrigerant gas is sucked into the cylinder 11 for repairing the heat pump device, and the stopper 21 of the pressure resistant gas charge hose 19 fixed to the vacuum pump 20 is removed. , Release the refrigerant gas attached to the high pressure gas pipe 5 of the heat pump device,
The cylinder 11 and the heat pump device are directly connected by a pressure resistant gas charge hose 19 while being fixed to the valve / pipe 8 for sucking. Refrigerant gas from the cylinder 11 is loosened, the stopper 21 of the hose 19 fixed to the discharge pipe 13 is loosened to release the refrigerant gas, and the air is expelled and then fixed.
Open valve 12 of 1. In this case, since the cylinder 11 is evacuated, the refrigerant gas in the heat pump device is sucked into the cylinder 11 and moves quickly. When the gas pressure in the cylinder 11 rises and the gas pressure in the heat pump device decreases, and the two become equal, the refrigerant gas does not move into the cylinder 11, so when the compressor 1 is operated, the gas pressure in the heat pump device increases and the refrigerant gas Moves into the gas cylinder 11. In this way,
When the refrigerant gas is sufficiently transferred to the cylinder 11, the valve 12 is closed, the compressor 1 is stopped, and the heat pump device is repaired.

FIG. 5 shows a state in which the refrigerant gas temporarily stored in the cylinder 11 is filled in the heat pump device. As shown in the drawing, the stopper 21 of the pressure resistant gas charge hose 19 fixed to the valve and pipe 8 for releasing and sucking the refrigerant gas attached to the high pressure gas pipe 5 of the heat pump device is removed, and the refrigerant gas attached to the low pressure gas pipe 6 is released, It is connected to the valve / pipe 9 that inhales. A pressure-resistant gas charge hose 19 directly connects the pipe 13 for sucking in and discharging the refrigerant gas of the cylinder 11 and the valve / pipe 9 for discharging and sucking the refrigerant gas attached to the low-pressure gas pipe 6 of the heat pump device. Loosen the stopper 21 of the pressure resistant gas charge hose 19 connected to the valve / pipe 9 for discharging and sucking the refrigerant gas, open the valve 12 of the cylinder 11 a little to discharge a little gas, and then stop after stopping the air. Tighten 21, release refrigerant gas,
Intake valve and pipe 9 and pressure resistant gas charge hose 1
9 is fixed. Here, the valve 12 of the cylinder 11 is opened. In this case, since the inside of the heat pump device is in a vacuum, the refrigerant gas in the cylinder 11 is sucked into the heat pump device and moves quickly. When the gas pressure in the cylinder 11 decreases and the gas pressure in the heat pump device increases, and the two become equal, the cylinder 1
Since the refrigerant gas in 1 does not move into the heat pump device, the refrigerant gas flow rate control valve 7 installed between the expansion valve 3 and the valve / pipe 9 for discharging and sucking the low pressure side refrigerant gas is closed to close the compressor. Activate 1. Since the refrigerant gas flow rate control valve 7 is closed, the flow of the refrigerant gas is stopped, and the refrigerant gas is sucked by the compressor 1. Therefore, the gas pressure in the low-pressure gas pipe 6 decreases and the cylinder 1
Refrigerant gas in 1 is sucked into the heat pump device, moves quickly, and is filled. In this case, when the refrigerant gas temporarily stored in the cylinder 11 is not enough due to gas leakage or the like, the refrigerant gas may be replenished by the method of the present invention, or the refrigerant gas may be replenished by a normal method. As described above, the present invention can be carried out only by preparing the vacuum pump and the pressure resistant gas charge hose without bringing a large instrument to the site.

The case of using the gas charging device will be described below. FIG. 6 shows a state in which the inside of the cylinder 11 is evacuated by using a commonly used gas charging device. The gas charging device is usually provided with three hoses on the lower side, and when sending gas from the central hose to the left and right hoses, or when stopping the gas, the refrigerant gas charging device cocks 18, 18 connected to the hoses are moved. The left and right hoses communicate with the pressure gauges 17, 17 at the top,
The gas pressure in the hose, that is, the pressure in the cylinder connected to the hose and the pressure in the heat pump equipment can be known. Therefore, if the gas charging device is connected to the cylinder 11, the pressure inside the cylinder 11 can be known and it is not necessary to attach a pressure gauge to the cylinder 11. As shown in FIG. 6, a stopper 21 of the pressure resistant gas charge hose 19
And the refrigerant gas suction / exhaust pipe 13 of the cylinder 11 are connected, the central hose is fixed to the vacuum pump 20, the valve 12 of the cylinder 11 is opened, and the left side cock using the hose of the refrigerant gas charging device is connected. 18 is opened, the evacuation pump 20 is operated to evacuate the inside of the cylinder 11, the pressure gauge 17 confirms the degree of vacuum of the cylinder 11, and the valve 12 is closed.

FIG. 7 shows a state where the refrigerant gas in the heat pump device is transferred into the cylinder 11 using the refrigerant gas charging device. Refrigerant gas in which the center hose of the refrigerant gas charging device is connected to the refrigerant gas suction / exhaust pipe 13 of the refrigerant gas of the evacuated cylinder 11 and the right hose of the refrigerant gas charging device is attached to the high pressure gas pipe 5 of the heat pump device Is connected to the valve / pipe 8 for discharging and inhaling. Although the left and right hoses of the refrigerant gas charging device differ depending on the viewing direction, they are described here according to the general arrangement. After sucking the refrigerant gas and loosening the stopper 21 fixed to the discharge pipe 13 to release the air by the gas, the valve 12 of the cylinder 11 is opened. The refrigerant gas in the heat pump device is sucked into the cylinder 11, and when the gas pressure in the cylinder 11 rises and the gas pressure in the heat pump device decreases, the compressor 1 is operated to send the gas into the cylinder 11 and complete the transfer of the gas. The valve 12 of the cylinder 11 is closed.

FIG. 8 shows a state in which the heat pump equipment is repaired and evacuated, and the refrigerant gas temporarily stored in the cylinder 11 is transferred to the heat pump equipment by using the refrigerant gas charging device. Refrigerant gas charged into the hose stopper 21 at the center of the refrigerant gas charging device and the refrigerant gas in the cylinder 11 and fixed to the discharge pipe 13 and attached to the hose on the right side of the refrigerant gas charging device and the low-pressure gas pipe 6 of the heat pump device. It is fixed to the valve / pipe 9 for discharging and sucking in, and the stopper 21 of the pressure resistant gas charge hose 19 connected to the valve / pipe 9 for discharging and sucking this refrigerant gas is loosened a little, and the valve 12 of the cylinder 11 is opened a little. After discharging a small amount of gas to expel the air in the hose 19, the valve 12 is opened. Since the heat pump equipment is evacuated after being repaired as described above, the inside of the heat pump equipment is in a vacuum state, and therefore the refrigerant gas in the cylinder 11 is sucked into the heat pump equipment and moves. When the gas pressure in the heat pump device rises and the gas pressure in the cylinder 11 drops and the two become equal, the gas in the cylinder 11 does not move into the heat pump device, so the expansion valve 3 of the heat pump device and the low-pressure gas pipe 6 are installed. Refrigerant gas flow rate control valve 7 installed between the valve and pipe 9 for discharging and sucking the generated refrigerant gas
Is closed and the compressor 1 is operated. in this way,
Since the refrigerant gas flow rate control valve 7 is closed, the refrigerant gas does not flow, and the compressor 1 sucks the refrigerant gas, so that the pressure in the low-pressure gas pipe 6 decreases and the cylinder 1
The refrigerant gas in 1 is sucked into the heat pump device and moves. In this case, if it is not enough to return the refrigerant gas temporarily stored in the cylinder to the heat pump device due to gas leakage or the like, the refrigerant gas is replenished by a normal method.

[0014]

【Example】

[Example 1] A compressor 2 is used as a freezer after construction.
It is one of HP and the refrigerant gas is HFC125. When 3 kg of refrigerant gas was put into operation, the amount of refrigerant gas passing through the expansion valve was too large and the cooling temperature did not drop, so the expansion valve was replaced. Normally, refrigerant gas is released into the air, but it was decided to move it to a temporary storage cylinder, replace parts, and then return it to the refrigerator. A cylinder containing 8 kg is evacuated, the valve 12 of the cylinder 11 is closed, the refrigerant gas of the cylinder 11 is sucked, and the discharge pipe 13 is drawn.
And the valve / pipe 8 for discharging and sucking the refrigerant gas attached to the high pressure gas pipe of the refrigerator are connected by the pressure resistant gas charge hoses 19 and fixed by the stoppers 21 at both ends of the hose to directly connect the refrigerator and the cylinder 11. It was The pressure resistant gas charge hose 1 which sucks the refrigerant gas of the cylinder 11 and loosens a stopper on the discharge pipe 13 side slightly to release a small amount of gas
After releasing the air inside 9, it was fixed with a stopper 21.
Next, when the valve 12 of the cylinder 11 was opened, the inside of the cylinder 11 was in a vacuum state, so that the refrigerant gas in the refrigerator was
Most of them moved into the cylinder 11 in about 2 minutes. Since the pressure in the cylinder 11 rose to 3 kg / cm ² and became equal to the pressure in the refrigerator, the compressor of the refrigerator was operated. The gas pressure in the refrigerator increased, and in about 3 minutes thereafter, almost all the gas in the refrigerator was transferred to the cylinder 11.

In this way, the expansion valve of the refrigerator is replaced, and the refrigerant gas flow rate control valve is installed between the expansion valve and the valve / pipe for discharging and sucking the refrigerant gas attached to the low pressure gas pipe to evacuate the inside of the refrigerator. did. Refrigerant gas discharge / suction valve attached to the low-pressure gas pipe of the refrigerator and refrigerant gas suction of the cylinder 11 are connected to the discharge pipe 13 with a pressure resistant gas charge hose 19 and fixed with a stopper 21. After loosening the stopper on the machine side a little and opening the gas valve 12 of the cylinder 11 a little to release the air in the hose, the stopper 21 was fixed and the valve 12 was opened. By doing so, the inside of the heat pump device is in a vacuum state, so that the refrigerant gas in the cylinder 11 is quickly transferred into the heat pump device. Since the gas pressure in the cylinder 11 and the gas pressure in the heat pump device became equal, close the refrigerant gas flow rate control valve 7 installed between the expansion valve and the valve / pipe for discharging and sucking the refrigerant gas on the low pressure side. When the gas was shut off and the compressor 1 was operated to suck the gas, the gas pressure in the low-pressure gas pipe became low, and the refrigerant gas in the cylinder 11 almost moved into the refrigerator. By replacing the expansion valve in this way, the gas flow rate of the refrigerator became appropriate, the inside of the freezer reached -30 ° C, and it operated normally.
In this case, there was no problem with refrigerant gas leakage, and there was no problem with gas recovery, storage, and transfer, so there was no need to supplement the refrigerant gas.

[Embodiment 2] The 8 HP water-cooled cooler leaked gas, and the location of the gas leak was found. Therefore, it was repaired, and the refrigerant gas was temporarily stored in the cylinder according to the present invention. The high-pressure gas pipe was not a valve and pipe, but only a pipe with a blocked tip attached, so wrap the pipe, make a hole in the pipe, fix the part that functions as a valve, and use a vacuumed cylinder. Connect the parts that function as valves with a pressure resistant gas charge hose,
It was decided to move the refrigerant gas to the cylinder. The refrigerant gas is Freon 22. Approximately 4k when inhaled naturally with an 8kg cylinder
Since g could be collected, the valve of the cylinder was closed and the cylinder was replaced with a new vacuumed cylinder. Since the new cylinder is evacuated, most of the refrigerant gas could be recovered with just a slight operation of the compressor. Repair the gas leak point of the cooler, install the refrigerant gas flow rate control valve after the expansion valve, close the hole for extracting the refrigerant gas of the high pressure gas pipe, evacuate the inside of the cooler, and then replenish the refrigerant gas attached to the low pressure gas pipe We decided to return the refrigerant gas stored in the cylinder from the valve. The weight of the refrigerant gas stored in the cylinder was about 6 kg, and the required amount of the cooler was about 8 kg. Connect the cylinder and the refrigerant gas replenishment valve attached to the low-pressure gas pipe of the cooler to the pressure-resistant gas charge hose, close the refrigerant gas flow rate control valve and operate the compressor to return the gas in the cylinder to the cooler, and a new refrigerant gas of 2 kg. Was replenished. In this way, this cooler is operating normally.

[0017]

As described above, according to the present invention, when parts are replaced after a trial run of the heat pump device,
Or, when repairing a faulty part, refrigerant gas can be collected and temporarily stored in a evacuated cylinder, and after replacing parts of the equipment, after completion of repair, the refrigerant gas temporarily stored in the cylinder can be returned to the equipment. Since there is no possibility of causing troubles by releasing CFC gas into the air or discarding it into the building, the refrigerant gas can be reused without being discarded, so that an economic effect can be expected. In addition, in order to carry out the present invention, in addition to the vacuum suction pump that is indispensable in the field, it is only necessary to prepare a few parts such as a pressure resistant gas charge hose, and the movement of the refrigerant gas is quick. It also has the effect of significantly shortening. Therefore, in the past, in order to release the refrigerant gas in the building, it took time to release it while paying attention to the environment, but such concern is unnecessary, and the impact on the environment is extremely small, and it is safe. You can work with all your heart.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of a heat pump device when using a cylinder for temporarily storing a refrigerant gas according to the present invention.

FIG. 2 is a schematic view showing a structure of a cylinder for temporarily storing a refrigerant gas according to the present invention.

FIG. 3 is a schematic view showing a state in which a refrigerant gas temporary storage cylinder according to the present invention and a vacuum pump are connected by a pressure resistant gas charge hose to evacuate the inside of the cylinder.

FIG. 4 is a diagram showing a refrigerant gas temporary storage tank according to the present invention, a heat pump device, a valve and a pipe for discharging and sucking a high-pressure side refrigerant gas, connected by a pressure resistant gas charge hose to suck the refrigerant gas in the heat pump device into the cylinder. 6 is a schematic view showing a state in which

[Fig. 5] A refrigerant gas temporary storage cylinder according to the present invention, a heat pump device, a valve and pipe for discharging and sucking low-pressure side refrigerant gas are connected by a pressure resistant gas charge hose, and the refrigerant gas in the cylinder is transferred to the heat pump device. It is a schematic diagram showing a state.

FIG. 6 is a schematic view showing a state in which a cylinder for temporarily storing a refrigerant gas, a vacuum pump, and a refrigerant gas charging device according to the present invention are used to evacuate the inside of the cylinder.

FIG. 7 is a diagram showing a refrigerant gas temporary storage cylinder according to the present invention, a heat pump device, a valve / pipe for discharging and sucking a high-pressure-side refrigerant gas, and a refrigerant gas charging device to suck the refrigerant gas in the heat pump device into the cylinder. 6 is a schematic view showing a state in which

FIG. 8: The refrigerant gas in the cylinder is transferred to the heat pump device by using the refrigerant gas temporary storage cylinder and the heat pump device according to the present invention, the valve and pipe for discharging and sucking the low-pressure side refrigerant gas, and the refrigerant gas charging device. It is a schematic diagram showing a state.

[Explanation of symbols]

1 ... Compressor 2 ... Condenser 3 ... Expansion valve 4 ... Evaporator 5 ... High pressure gas pipe 6 ... Low pressure gas pipe 7 ... Refrigerant gas flow rate control valve 8 ... High pressure side refrigerant Valve and pipe for discharging and sucking gas 9 ... Valve and pipe for discharging and sucking low-pressure side refrigerant gas 11 ... Gas cylinder 12 ... Gas cylinder opening / closing valve 13 ... Gas cylinder, gas suction, discharge pipe 14・ ・ ・ Safety valve 15 ・ ・ ・ Net 16 ・ ・ ・ Gas cylinder service valve 17 ・ ・ ・ Pressure gauge 18 ・ ・ ・ Refrigerant gas charge device cock 19 ・ ・ ・ Refrigerant gas charge hose 20 ・ ・ ・ Vacuum pump 21 ・ ・ ・Pressure resistant gas charge hose stopper

Claims (5)

[Claims] 1. A valve 12 is attached to an upper portion of a cylinder 11 so that a refrigerant gas can be sucked in and a discharge pipe 13 can be opened and closed, and a valve / pipe 8 for discharging and sucking a refrigerant gas is attached to a high pressure pipe 5 of a heat pump device. A cylinder for temporarily storing a refrigerant gas, in which a valve / pipe 9 for discharging and sucking a refrigerant gas is attached to a low-pressure pipe 6 of a heat pump device, and a method of using the cylinder. 2. A cylinder for temporarily storing a refrigerant gas, wherein a refrigerant gas flow rate adjusting valve 7 is mounted between an expansion valve 3 of a heat pump device and a valve / pipe 9 which discharges and sucks a refrigerant gas mounted on a low pressure gas pipe 6. And how to use it. 3. The gas suction / exhaust pipe 13 of the cylinder 11 and the vacuum pump 20 are connected by a pressure resistant gas charge hose 19, the valve 12 of the cylinder 11 is connected by a pressure resistant gas charge hose 19, and the valve 12 of the cylinder 11 is connected. Open and operate the vacuum pump 20 to open the cylinder 11
A cylinder for temporarily storing a refrigerant gas, characterized by closing the valve 12 of the cylinder 11 after evacuating the inside, and a method of using the cylinder. 4. A gas / suction pipe 13 for evacuating the inside of the cylinder 11 and a valve / pipe 8 for discharging / inhaling a refrigerant gas attached to a high pressure pipe 5 of a heat pump device and a pressure resistant gas charge hose 19. Knot, open the valve 12 of the cylinder 11, open the compressor 1
Is operated to move the refrigerant gas in the heat pump device to the cylinder 11, and a cylinder for temporary storage of the refrigerant gas and a method of using the same. 5. The gas suction / exhaust pipe 13 of the cylinder 11 storing the refrigerant gas and the valve / pipe 9 for discharging and sucking the refrigerant gas attached to the low pressure gas pipe 6 of the vacuum pumped heat pump equipment are pressure resistant. The gas valve 12 of the cylinder 11 is opened by connecting with the gas charge hose 19 and the refrigerant gas flow rate control valve 7 installed between the expansion valve 3 and the valve-combining pipe 9 is closed, and the compressor 1 is operated to be stored in the cylinder 11. Characterized by moving the refrigerant gas to a heat pump device,
Cylinder for temporary storage of refrigerant gas and its usage.