JPH07260093A - Fleon gas recovering device - Google Patents

Abstract

PURPOSE:To reduce a transportational working cost by providing a compression unit having first and second valves, providing a condensation unit which is built up separately from the compression unit and has a fourth valve, and providing a strainer unit which is built up separately from the compression unit and the condensation unit and has a sixth valve. CONSTITUTION:In a compression unit 1, a packless valve 12 for inlet which is a first valve, is inslalled inside a bascket body 10 in which a compressor 11 is stored and it is connected to the intake side of the compressor 11 through a copper pipe 13. Further, a packless valve 15 which is a second valve is attached to the exhaust side of the compressor 11 through a copper pipe 14. The first connecting hose 4 of a condensation unit 2 is placed in connection between packless valves 15, 23 so as to be communicated with the compression unit 1. Finally, the condensation unit 2 is communicated with a strainer 3 by placing a second connecting hose 6 in connection between packless valves 29, 33. Hereby, a transportational working cost can be reduced because the weights of respective units 1, 2, 3 are light.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CFC gas recovery device used for recovering CFC gas used in an air conditioner or a refrigerator in a recovery container.

[0002]

2. Description of the Related Art Conventionally, this type of CFC gas recovery device is
As shown in FIG. 8, the structure was such that each device was housed in one housing. That is, a suction packless valve (not shown) for connecting to an air conditioner or a refrigerator is attached to a side surface of the housing 101 of the CFC gas recovery apparatus 100, and a copper pipe is connected to the packless valve via a copper pipe. The compressor is connected. An oil separator is connected to this compressor via a copper pipe, and a condenser is connected to the oil separator via a copper pipe. Furthermore, a dry core and a sight glass are sequentially connected to this condenser via a copper tube,
The discharge packless valve connected to the discharge side of the sight glass was attached to the side surface of the housing 101.

In such a structure, the air conditioner and the like and the suction packless valve of the CFC gas recovery apparatus 100 are connected by a charge hose, and the CFC gas recovery apparatus 100 is connected.
In the state where the discharge packless valve and the recovery container 110 are connected by another charge hose, the fluorocarbon recovery device 1
Drive 00. Then, Freon gas in the air conditioner is sucked from the suction packless valve, and the compressor, oil separator, condenser, and dry core sequentially compress the Freon gas (high-temperature and high-pressure), oil separation, and heat exchange condensation (normal-temperature high-pressure liquefaction). After being purified, it is discharged from the discharge packless valve to the collection container 110.

[0004]

However, in the above-mentioned conventional CFC gas recovery apparatus 100, the suction packless valve, the compressor, the oil separator, the condenser, the dry core, the sight glass, the discharge packless valve, etc. are all 1 unit.
Since the structure is housed in an individual housing 101, a large-sized one (for example, a recovery capacity of 20 kg / h or more) has an extremely large weight even if the weight is reduced, and the fluorocarbon recovery device 100 can be used by a small number of people. There is a problem that it becomes difficult to carry.

That is, the fluorocarbon recovery device 100 is shown in FIG.
As shown in FIG. 0, a housing 101 is formed of a main body frame and a main body panel, and such a housing 101 accommodates six packless valves, a compressor, an oil separator, a condenser, a dry core, and a sight glass. There is. Further, in addition to the above-mentioned devices, a weight scale that measures the weight of the recovered CFC gas (liquid CFC), a control device that is an electric system component for controlling the operation of the CFC gas recovery apparatus 100, and the like are attached to the housing 101. . Therefore, as shown in the column of total weight in FIG. 10, the weight of the CFC gas recovery device 100 exceeds 70 kg.

On the other hand, the fluorocarbon recovery device 100
It is conceivable that a caster is attached to the bottom part of the vehicle and the caster is used for transportation, or the Freon gas recovery device 100 is placed on a trolley for transportation. However, this method is effective for transporting on flat ground, but when transporting up stairs to the upper floor, as shown in FIG.
~ 4 workers H are required. Usually, the number of workers required for the CFC gas recovery work is two, so that one or two workers are additionally required for the transportation work, and as a result, there is a problem that the work cost increases.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a CFC gas recovery apparatus which can reduce the transportation work cost and improve the work efficiency.

[0008]

In order to achieve the above object, the CFC gas recovery apparatus of the present invention comprises a first valve for introducing CFC gas, a compressor for compressing the introduced CFC gas, and a compressor. The second that emits Freon gas
And a compression unit having a valve of the second, and a second unit through a detachable first connection hose formed separately from the compression unit.
, A condensing unit having a third valve for introducing CFC gas from the valve, a condenser for condensing and liquefying the introduced CFC gas, and a fourth valve for discharging liquid CFC condensed by the condenser, a compression unit, and a condensing unit A fifth valve that is formed separately from the unit and that introduces liquid freon from the fourth valve via a detachable second connection hose; a moisture removing unit that removes moisture from the introduced liquid freon;
And a strainer unit having a sixth valve for discharging the liquid freon from which the water has been removed by the water removing means.

[0009]

According to the CFC gas recovery apparatus of the present invention, the compression unit, the condensation unit, and the strainer unit are formed separately, so that the first and second connection hoses can be removed to separate the units. Can be transported to.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing a CFC gas recovery apparatus according to an embodiment of the present invention, and FIG. 2 is a configuration diagram showing a connection state of each device in FIG. As shown in the figure, the CFC gas recovery device of this embodiment is composed of a compression unit 1 and a condensation unit 2.
And a strainer unit 3 are provided and can be divided into three.

The compression unit 1 has a structure in which a compressor 11 is housed in a housing 10 formed of a panel and a frame. Then, on one side surface of the housing 10, a suction packless valve 12 as a first valve for sucking a CFC gas in a device 90 such as an air conditioner or a refrigerator is attached. The suction packless valve 12 is connected to the suction side of the compressor 11 via a copper pipe 13.

A packless valve 15 as a second valve is attached to the other side surface of the housing 10.
It is connected to the discharge side of the compressor 11 via a copper pipe 14. Further, as shown in FIG. 2, another packless valve 17 connected to the compressor 11 via a copper pipe 16 is provided.
Is attached to the side surface of the housing 10. The weight of such a compression unit 1 is about 35 k as shown in FIG.
It is about g.

Next, the condensing unit 2 has a structure in which an oil separator 21 and a condenser 22 are housed in a housing 20 formed of a panel and a frame. A packless valve 23 as a third valve is attached to one side surface of the housing 20. The packless valve 23 is connected to the oil separator 21 via a copper pipe 24.
2 is connected to the suction side of the casing, and on the same side of the housing 10, as shown in FIG. 2, a pack communicating with a copper pipe connected between the oil separator 21 and the oil adjusting packless valve 25. The valve 26 is attached.

The discharge side of the oil separator 21 is connected to the suction side of the condenser 22 via a copper pipe 27, and the discharge side of the condenser 22 is connected via a copper pipe 28 to a fourth valve. The packless valve 29 is connected.

Such a condensing unit 2 is placed on the compression unit 1 during the operation of the fluorocarbon gas recovery device, and the first connecting hose 4 is connected between the packless valves 15 and 23, so that the compression unit 1 is connected. It is designed to communicate with. A connection hose 5 is connected between the packless valves 17 and 26. The weight of such a condensing unit 2 is about 23.8 kg, as shown in FIG.

Next, the strainer unit 3 has a structure in which a dry core 31 as a moisture removing means and a sight glass 32 are housed in a housing 30 formed of a panel and a frame. A packless valve 33 as a fifth valve is attached to one side surface of the housing 30. The packless valve 33 is connected to the suction side of the dry core 31 via a copper tube 34, and the sight glass 32 is connected to the discharge side of the dry core 31 via a copper tube 35.

The sight glass 32 has a function of indicating whether or not the liquid flon flowing in the copper tube 35 has water.
From the outside of the strainer unit 3, it is possible to check whether or not the liquid flon contains water. A discharge packless valve 37 as a sixth valve is connected to the discharge side of the sight glass 32 via a copper pipe 36. Further, a scale 38 for measuring the weight of the recovered CFC gas A is attached to the housing 30 (see FIG. 3).

The strainer unit 3 as described above is placed on the condensing unit 2 during the operation of the fluorocarbon recovery device, and the second connecting hose 6 is connected to the packless valves 29, 33.
The condensing unit 2 is communicated with by connecting between them. Further, the weight of the strainer unit 3 is about 11, including the weighing device 38, as shown in FIG.
It is about 1 kg. In addition, each connection hose 4-6 is 30
It is made of a material that can withstand a pressure of kg / cm ² .

Next, the operation will be described. First, the units 1 to 3 are carried in and stacked as shown in the figure, and the units 1 to 3 are connected by the connection hoses 4 to 6. As shown by the chain double-dashed line in FIG. 2, a charge hose 91 is connected between the valve (not shown) of the device 90 and the suction packless valve 12, and the recovery container 93 and the discharge packless are connected. A charge hose 92 is connected to the valve 37. Then, the packless valves 12, 15, 17, 23, 26, 29, 33, 37 are opened. The appearance of this state is shown in FIG.

When the operation is started in the above state, first, the CFC gas in the device 90 is sucked into the compressor 11 through the charge hose 91, the suction packless valve 12 and the copper pipe 13. The inhaled Freon gas is compressed by the compressor 11 to be in a high temperature and high pressure state, and the packless valve 1
Emitted from 5.

The discharged CFC gas is connected to the connecting hose 4,
The oil is sucked into the oil separator 21 through the packless valve 23 and the copper pipe 24, and the oil separator 21
After the oil is separated by, the oil is sent to the condenser 22. Then, heat is exchanged with the air by the condenser 22 and condensed to become liquid chlorofluorocarbon gas at room temperature and high pressure, which is discharged from the condenser 22 to the packless valve 29 side through the copper pipe 28.

After that, the liquid CFC at room temperature and high pressure from the condensing unit 2 is sucked into the dry core 31 via the connection hose 6, the packless valve 34 and the copper pipe 34, and the dry core 31 removes water and foreign substances. Purified.
The purified liquid CFCs pass through the sight glass 32, where the water content is checked and then discharged to the discharge packless valve 37 side.

The liquid freon discharged from the strainer unit 3 in this manner is recovered in the recovery container 93 via the charge hose 92. The amount of liquid CFC recovered is
It is weighed by the weighing device 38 so as not to exceed the capacity of the recovery container 93.

In such a chlorofluorocarbon gas recovery device, the transportation can be carried out for each of the lightweight units 1 to 3, so that the operator for transportation can perform the necessary operations for chlorofluorocarbon gas recovery work as shown in FIG. Only one person is enough. Therefore, the working cost is significantly reduced. Further, since only the unit having the defective component can be opened and the component can be replaced, the efficiency of the replacement work is improved. When the device is disassembled after the work, the connection hoses 4 to 6 are removed after closing each valve. As a result, the amount of CFC gas leaking to the atmosphere becomes only a very small amount in the hose.

Next, an example of the connection structure of the units 1 to 3 will be described. In the CFC gas recovery apparatus of this embodiment, as shown in FIG. 1, a positioning mechanism 7 and a clasp mechanism 8 are provided between the compression unit 1 and the condensation unit 2 and between the condensation unit 2 and the strainer unit 3. There is.

The positioning mechanism 7 is, as shown in FIG. 5, recessed at four corners of the upper surface of the housing 10 (20) of the compression unit 1 (condensing unit 2), and a fitting portion 71 opened upward.
Housing 20 of condensing unit 2 (strainer unit 3)
(30) is provided with four insertion portions 72 protruding from the lower surface of the lower surface and insertable into the fitting portion 71. The outer diameter of the insertion portion 72 and the inner diameter of the fitting portion 71 are set to be substantially equal.

As a result, when the condensing unit 2 (strainer unit 3) is placed on the compression unit 1 (condensing unit 2), by inserting the insertion portion 72 of each positioning mechanism 7 into the fitting portion 71, The displacement of the placed condensing unit 2 (strainer unit 3) is prevented.

On the other hand, the stopper mechanism 8 is the compression unit 1
The (condensing unit 2) is provided with an engaging portion 81 and a buckle portion 82 engageable with the engaging portion 81.
Specifically, as shown in FIG. 6, a hook-shaped engagement portion 81 is provided to project from the upper end of the housing 10 (20) of the compression unit 1 (condensing unit 2). A fixing portion 83 is fixed to the housing 20 (30) of the condensing unit 2 (strainer unit 3) at a position corresponding to the engaging portion 81 on the side surface thereof, and the fixing portion 83 is rotatably operated on the operating portion. 84 is pivotally supported. The buckle portion 82 is rotatably supported by the operation portion 84.

Accordingly, by rotating the operating portion 84 downward, the buckle portion 82 is disengaged from the engaging portion 81, and by rotating the operating portion 84 upward, as indicated by the two-dot chain line in the figure, The buckle portion 82 is adapted to engage with the engaging portion 81. In this way, the buckle part 82
Since the upper condensing unit 2 (strainer unit 3) is integrally connected to the lower compressing unit 1 (condensing unit 2) by engaging the engaging portion 81 with,
The upper condensing unit 2 (strainer unit 3) does not drop from the lower compressing unit 1 (condensing unit 2) due to upward vibration or the like.

In the above embodiment, the positioning mechanism 7 has the fitting portion 71 and the insertion portion 72.
These may be turned upside down, and their position, number, shape, etc. are not limited to those in the above embodiment. Further, the position, the number, the shape, etc. of the stopper mechanism 8 are not limited to those in the above embodiment, and the positioning mechanism 7 and the stopper mechanism 8 may be omitted in some cases.

Further, in the above embodiment, the apparatus for stacking the compression unit 1, the condensing unit 2, and the strainer unit 3 in the order of descending weight is shown, but the apparatus is not limited to this, and Depending on the situation, it is possible to use them without stacking.

Furthermore, the first to sixth valves are
It is not limited to the packless valve. Further, a handle or a caster for transportation may be provided on the housings 10, 20, 30 of the units 1 to 3.

[0033]

As described above, according to the CFC gas recovery apparatus of the present invention, the three units are formed separately and the weight of each unit is light, so that it can be carried by a small number of people such as two people. Therefore, the number of workers can be reduced. As a result, it is possible to reduce transportation work cost and improve work efficiency. Further, since only the unit having the defective component can be opened and the component can be replaced, the efficiency of the replacement work is improved.

[Brief description of drawings]

FIG. 1 is a schematic view showing a CFC gas recovery apparatus according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a connection state of each device of FIG.

FIG. 3 is a perspective view showing the external appearance of the device of FIG.

4 is an explanatory diagram showing a transportation state of each unit in FIG. 1. FIG.

5 is an exploded perspective view of the device of FIG. 1. FIG.

6 is a side view showing the clasp mechanism of FIG. 1. FIG.

FIG. 7 is an explanatory diagram for explaining the weight of each unit of the apparatus of FIG.

FIG. 8 is a perspective view showing an example of a conventional CFC gas recovery apparatus.

9 is an explanatory view showing a transportation state of the apparatus of FIG.

FIG. 10 is an explanatory diagram for explaining the weight of the device in FIG.

[Explanation of symbols]

 1 Compression Unit 2 Condensation Unit 3 Strainer Unit 4 First Connection Hose 6 Second Connection Hose 11 Compressor 12 Intake Packless Valve (First Valve) 15 Packless Valve (Second Valve) 22 Condenser 23 Packless valve (third valve) 29 Packless valve (fourth valve) 31 Dry core (water removing means) 33 Packless valve (fifth valve) 37 Packless valve for discharge (sixth valve)

Claims (1)

[Claims] 1. A compression unit having a first valve for introducing CFC gas, a compressor for compressing the CFC gas introduced, and a second valve for discharging CFC gas compressed by the compressor, and this compression unit. A third valve that is formed as a separate body and that introduces CFC gas from the second valve through a detachable first connection hose, a condenser that condenses and liquefies the introduced CFC gas, and a condenser that condenses with this condenser. A condensing unit having a fourth valve for discharging the stored liquid freon, and a liquid freon from the fourth valve via a detachable second connecting hose formed separately from the compression unit and the condensing unit. A fifth valve for introducing water, a water removing means for removing water from the introduced liquid freon, and a liquid freon from which water has been removed by the water removing means is discharged. Freon gas recovery apparatus characterized by and a strainer unit with 6 of the valve.