WO1994018511A1

WO1994018511A1 - Chlorofluorocarbon recovery device

Info

Publication number: WO1994018511A1
Application number: PCT/JP1993/001831
Authority: WO
Inventors: Akira Nakajima
Original assignee: Yugen Kaisha Nakajima Jidosha Denso
Priority date: 1993-02-03
Filing date: 1993-12-17
Publication date: 1994-08-18

Abstract

A chlorofluorocarbon recovery device for extracting and recovering chlorofluorocarbon from car air conditioners, home air conditioners, and refrigerators that are to be scrapped, wherein a compressor (4) for a car air conditioner that is driven by an engine is used to obtain suction force for recovering chlorofluorocarbon, wherein a condenser (5) to liquefy chlorofluorocarbon gas used in a car air conditioner is used in addition to said compressor, wherein said engine is used as a driving source both for running a vehicle and recovering chlorofluorocarbon, wherein a suction hose (10) is connected to the suction port of said compressor, wherein said hose is then connected to a chlorofluorocarbon injection valve of an air conditioner to be scrapped so as to suck in chlorofluorocarbon gas, wherein chlorofluorocarbon gas so sucked in by means of said compressor is liquefied by means of said condenser so as to be recovered in a recovery container (17), and wherein oil separators (8) and (13) are provided on the suction and discharge sides of said compressor, respectively, whereby oil contained in chlorofluorocarbon gas is separated, thereby allowing only chlorofluorocarbon gas to be recovered in said recovery container.

Description

Specification

Mouth collecting device

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for recovering froth used as a refrigerant for a cooler, a refrigerator or the like, for reusing the froth, and for preventing air pollution.

Background art

Problems such as the global warming phenomenon or the destruction of the ozone layer due to the diffusion of chlorofluorocarbon have been raised. For this reason, various attempts have been made to recover CFCs from used coolers or refrigerators.

Conventional CFC recovery equipment uses an electric motor as a power source. In other words, the compressor is operated by an electric motor, and the compressor sucks Freon gas from a waste cooler or refrigerator to liquefy the Freon into a storage tank and collect it.

As this type of recovery device, if it is possible to go to the place where the waste is present and recover the front gas from the waste, the recovery operation can be performed conveniently. However, when a motor is used as a power source, a relatively lightweight motor must be used to make it portable, so its driving force is limited. For this reason, there is an inconvenience that the conventionally-used front-panel recovery device takes a long time to recover. For example, it takes about 15 to 30 minutes to recover front gas from a car cooler. The time required for this collection should be as short as possible.

To shorten the collection time, the capacity of the motor should be increased. However, if the capacity of the motor is increased, the weight of the motor increases, but it is difficult to receive power at the destination.

An object of the present invention is to provide a front collection device that can reduce the time required for collection, does not require a power source, and can be moved anywhere. Further, another object of the present invention is to provide a front-panel recovery apparatus which can save the front-pan process required for the front-panel recovery from waste products with a simple operation.

Further, in the present invention, when the collected flon is reused, a collecting container having a structure capable of minimizing the amount of flon remaining in the cylinder and reducing the amount of freon leaking from the empty cylinder is provided. It is intended to provide a front collection device.

Disclosure of the invention

In the present invention, the compressor of a vehicle cooler is diverted to a compressor for recovering freons, and the engine of the vehicle is used as it is as a power source of the freon collecting device. That is, connect the oil separator to the suction port of the compressor of the automotive cooler, and pull the suction hose out of the vehicle through the oil separator. The end of the suction hose drawn out of the vehicle is connected to a waste injection valve such as a cooler, and opening the front injection valve allows suction of the waste from the waste.

A compressor driven by the engine sucks front gas from waste products. The oil sucked by the compressor is removed again at the oil separator, and then collected in a collecting cylinder through a dryer.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a view showing a preferred embodiment of a chlorofluorocarbon recovery device according to the present invention.

Figure 2 is a diagram for explaining the general structure and operation of a cooler.

Fig. 3 is a diagram for explaining the structure of a simple type of device for recovering front gas when the front gas is easily recovered using the compressor of an automotive cooler.

Fig. 4 is a diagram for explaining the usage status of the simple type of chlorofluorocarbon collection device shown in Fig. 3. FIG. 5 is a diagram showing another example of the embodiment structure shown in FIG.

FIG. 6 is a diagram showing an example in which the embodiment shown in FIG. 1 is improved.

FIG. 7 is a view for explaining a structure of a connection port attached to a tip of a suction hose.

Fig. 8 is a diagram for explaining the structure of the tool used to directly extract the front gas from the pipe that is the waste flow passage. Fig. 9 is a view of Fig. 8 seen from the front.

FIG. 10 is an enlarged view of a main part of the structure shown in FIG. 9;

Fig. 11 is a diagram showing an example of a preferred structure of the frone collection container.

FIG. 12 is a diagram showing another structure of the frone collection container.

FIG. 13 is a view for explaining still another structure of the front recovery device. FIG. 14 is a view for explaining another structure of the front recovery device as in FIG. 13 第.

BEST MODE FOR CARRYING OUT THE INVENTION

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

FIG. 1 shows the structure of a CFC recovery device according to the present invention. In the figure, 1 indicates a car modified to a CFC recovery device. The feature of the present invention is that the compressor 4 for the cooler mounted on the automobile 1 is used as suction means for collecting the front. That is, in the engine room 2 of the automobile 1, an engine 3, a compressor 4 rotated by the engine 3, a condenser 5 for liquefying the CFC compressed by the compressor 4, and a fan for cooling the capacitor 5 6 and are arranged. Normally, the vent liquefied by the capacitor 5 is sent to an evaporator EB provided in the passenger compartment and is vaporized in the evaporator EB. If it is modified as a CFC recovery device, remove the piping connected to the evaporator EB and draw the suction port of the compressor 4 through the suction pipe 7, oil separator 8 and suction pipe 9 It is led out to the hose connection port 9A, and is connected to, for example, the high-pressure side and low-pressure side inlet and outlet ports of the cooler 11 of the vehicle to be dismantled through the suction hose 10 connected to the hose connection port 9A.

The discharge side of the compressor 4 is connected to an oil separator 13 through a pipe 12, and is connected to a capacitor 5 through an oil separator 13 and a pipe 14. In the capacitor 5, the front gas is cooled and liquefied by the fan 6. The liquefied front is collected in the collection container 17 through the pipe 15 and the dryers 16A and 16B. From the wastewater collected in the recovery container 17, high-purity oil-free fluorine can be obtained.

Reference numeral 18 denotes an oil tank that collects oil separated from the front of the oil separator 8 (oil is mixed with the refrigerant in order to operate the compressor smoothly). The oil separated by the oil separator 13 is returned again to the suction pipe 7 through the pipe 19 to compensate for the operation of the compressor 4. It should be noted that the oil separator can be used to separate the oil from the front gas simply by providing the oil separator on only one of the suction port side and the discharge side of the compressor 4.

According to the front recovery device shown in FIG. 1, since the compressor 4 is driven by the engine 3, a strong suction force is obtained, and the front is not left on the cooler 11 to be disassembled. CFCs can certainly be recovered in a short time of about 1 to 2 minutes. Engine 3 can also be used for running vehicles, so it can be moved anywhere. In particular, it is excellent in that it can recover the froth even in places where there is no commercial power line.

Fig. 1 shows an example of a front-panel recovery apparatus that separates and recovers front-end and oil. Can also be collected. FIG. 2 shows a simple structure of a froth collection device used for the simple freon collection method. According to this simple structure, if there is an automobile equipped with a cooler, it is possible to collect the foam from a waste cooler. it can.

Prior to describing this embodiment, an outline of the operation of the cooler will be described with reference to FIG. The low-pressure front gas in the pipe 18A is compressed by the compressor 4, and the high-pressure front gas is supplied to the capacitor 5 through the pipe 18B. The high-pressure front gas is cooled and liquefied while passing through the capacitor 5, and the liquid front is supplied to the degassing tank 21 through the pipe 19. The gas component is removed in the tank 21, and only the liquid front is supplied to the expansion valve 23 through the pipe 22, and is sprayed to the evaporator EB. The evaporator vaporizes the gas in the evaporator EB, and takes away the heat of vaporization from outside to cool the surrounding air. The front gas passing through evaporator EB is returned to pipe 18A, and the above is repeated.

Next, with reference to FIGS. 3 and 4, an embodiment of a simple type of foam recovery apparatus will be described. In the simple type of the device for recovering a froth, a low-pressure pipe 25 and a high-pressure pipe 26 are passed through a case 24. In this example, the case 24 has a rectangular parallelepiped shape, and the low-pressure pipe 25 and the high-pressure pipe 26 are arranged in parallel to each other and passed through a pair of opposed side plates of the case 24. Screws are formed on the outer periphery of both ends of the low-pressure pipe 25.Two nuts 27 are screwed on these screws, respectively, and the two side nuts 27 sandwich the side plate of the case, respectively. Pipe 25 is held in case 24. Similarly, the pressure pipe 26 is held in the case 24 by the nut 28.

Gas recovery ports 29 and compressor connection ports 30 are provided at both ends of the low-pressure pipe 25. A cylinder connection port 31 and a capacitor connection port 32 are provided at both ends of the low pressure pipe 26, respectively. These gas recovery port 29, compressor connection port 30, cylinder connection port 31 and capacitor connection port 32 can be air-tightly connected to pipes and hoses, etc. Pipe Fitting (Power Bra) And hose connection are possible.

In this example, a check valve 34 is inserted into the high-pressure pipe 26 to prevent the fluid from flowing from the cylinder connection port 31 to the capacitor connection port 32. In other words, the inside of the high-pressure pipe 26 is a capacitor connection port.

Fluid flows from 32 to cylinder connection port 31 only. In this example, the low pressure pressure gauge 33 that detects and displays the pressure in the low pressure pipe 25 and the pressure in the high pressure pipe 26 on the side of the capacitor connection port 32 of the check valve 34 are measured. The high pressure gauge 33 H for detecting and displaying is mounted on the upper plate of the case 24 so that the display can be seen from the outside. Next, Fig. 4 shows the situation in which front gas is collected from a cooler or the like attached to the car to be dismantled at the car dismantling site using this simple type of foam collection device. explain. This simple type of vehicle collection device is located in front of or outside the passenger seat of a normal car equipped with a power cooler, or at least an engine and a car cooler. Connect the compressor connection port 30 to the low pressure side pipe of the compressor 4 of No. 5, and connect the capacitor connection port 32 to the output side of the gas vent tank 21 of the cooler 35. In other words, the connection pipe between the gas venting tank 21 and the evaporator EB should be removed, and the output side of the gas venting tank 21 should be connected to the capacitor connection port 32.The compressor 35 depends on the type of cooler 35 The diameter of the pipe connection of 4 and the diameter of the pipe connection of the degassing tank 21 may be different. Therefore, in this example, matching relay pipes 36 and 37 are used, one end of matching relay pipe 36 is connected to compressor connection port 30 and the other end is connected to compressor 4 for matching. One end of the relay pipe 37 is connected to the capacitor connection port 32, and the other end is connected to the gas vent tank 21. In other words, matching relay pipes 36 and 37 are used in which the side connected to each compressor 4 and capacitor 4 is different depending on the type of normal power cooler 35. The matching relay pipes 36 and 37 are connected by a connecting tool 38 for easy handling. —Connect the gas recovery port 29 to the front passage of the cooler 11 of the dismantled vehicle. For this reason, in this example, one end of a suction hose 10 is connected to the gas recovery port 29, and one end of a metal (for example, aluminum) pipe 42 is connected to the other end of the suction hose 10. The other end of the pipe 42 is closed, and a plurality of access fitting valves 43 (similar to the inflator of a bicycle or car tire) are arranged on the peripheral wall of the pipe 42 in the axial direction. Installed. One end of a charging hose 44 used for supplying front gas is connected to this valve 43, and the other end of the charging hose 44 is connected to a gas supply needle valve of a compressor of the cooler 11 to be disassembled. . If necessary, connect a plurality of dismantled car coolers 11 to the valve 4 3. Furthermore, connect the collection container 17 to the cylinder connection port 31.

After connecting the components in this manner, the cooler 35 that is normal is operated to cool. That is, the engine (not shown) of the vehicle in which the normal cooler 35 is mounted is started, and the compressor 4 of the cooler 35 is driven by the engine. To be disassembled cooler 1 1 © Front hose 4 4 One pipe 4 2 — Suction hose 10 0 — Low pressure pipe 2 5 — For alignment Suction is drawn into the compressor 4 through the relay pipe 36 and compressed by the compressor 4 The high pressure front gas is liquefied by the capacitor 5 and degassed by the gas release tank 21, and the liquid Freon (including oil) is passed through the relay pipe for matching 3 7 —high pressure pipe 26 Through the collection container 17.

In this way, the flow in the disassembled cooler 39 is collected in the collection container 17, but when the collection is almost completed, the inside of the low-pressure pipe 25 becomes a considerable negative pressure, and this is a low-pressure manometer. 3 3L (Fig. 3) is displayed and the engine is stopped to finish the collection work. Since the time for collecting the froth is known in advance based on the capacity of the cooler 11 to be disassembled, the process of collecting the froth may be completed in time. When the engine is stopped, the pressure on the capacitor 5 side drops, but the check valve 34 recovers the pressure collected from the recovery container 1 Ί. There is no danger of the spill. If the valve of the collection container 17 is closed before stopping the engine, the check valve 34 may not be provided. Pressure pipe

26 When the pressure in 6 becomes abnormal, that is, when the recovery container 17 contains more than the allowable amount of freon (usually, the amount of freon stored is limited to about 90% or more of the inner volume of the cylinder). Then, after this is displayed on the high-pressure internal pressure gauge 33 H, the supply of the front can be stopped.

FIG. 5 shows another embodiment. Parts corresponding to those in FIGS. 3 and 4 are denoted by the same reference numerals. In this example, an on-off valve 26 A is inserted in the high-pressure pipe 26 instead of the check valve 34 in comparison with FIG. A low-pressure pressure switch 45 L that operates when the pressure in the low-pressure pipe 25 falls below a predetermined value is provided, and the capacitor connection port of the on-off valve 26 A is provided.

髙 Operates when the pressure in the high pressure pipe 26 on the second side exceeds a predetermined value. A low pressure switch 45 H is provided. The back plate of case 24 is extended above the upper plate to protect the pressure gauges 33 L and 33 H and the pressure switches 45 L and 45 H.

Further, in this example, the water tank 47 is placed on the measuring instrument 46, the water tank 47 is placed in the water tank 47, and the collection container 17 is accommodated in the water tank 47. A pipe 49 is wound around the outer peripheral surface of the collection container 17. Both ends of the pipe 49 are detachably connected to a low-pressure pipe 25 and a high-pressure pipe 26 projecting from the case 24.

Also in this configuration, the fluorocarbon of the disassembled cooler can be similarly recovered as described in FIG. In this case, when the flow recovery is almost completed, the low-pressure pressure switch 45 L is operated, thereby automatically closing the on-off valve 26 A and automatically stopping the engine. When the oil in compressor 4 (Fig. 4) is depleted, compressor 4 can be automatically prevented from continuing to operate and deteriorating. Backflow can be prevented. When the flow in the collection container 17 exceeds 90% of the cylinder volume, the high-pressure pressure switch 45H operates, As a result, the on-off valve 26 A is automatically closed, so that there is no danger that the collection container 17 will contain more than a predetermined value of freon. Further, a part of the liquid flow in the high-pressure pipe 26 is supplied to the pipe 49, and is vaporized in the pipe 49, and the heat of vaporization cools the recovery container 17, and the vaporized low-pressure flow is returned to the low-pressure pipe. Returned to pipe 25. Cooling the collection container 17 in this way facilitates collection of the freon in the collection container 17 o

In the above description, an alarm may be generated when the low pressure switch 45 L and the high pressure switch 45 H operate. In FIG. 5, a check valve 34 may be inserted into the high-pressure pipe 26 at the cylinder connection port 31 side of the on-off valve 26A in the same manner as in FIG. The opening / closing valve 26A may be controlled to open when the compressor 4 operates. In addition to the car cooler, household goods and commercial refrigerators, freezers, and household coolers can be used as the collected materials. For example, one access fitting valve may be provided on the plate surface of the case 24 as the gas recovery port 29. The case 24 need not necessarily be box-shaped, and may be any as long as it holds the low-pressure pipe 25 and the high-pressure pipe 26.

The embodiment shown in FIG. 6 shows a chlorofluorocarbon collection device in which the difference in the collection efficiency hardly changes due to the temperature difference. In other words, in winter when the temperature is low or in summer when the temperature is high, there is a disadvantage that the time required for collection becomes longer. It is considered that the reason is that if the air temperature is low, a part of the flow is liquefied in the suction pipe 7 or 9, and the liquefaction lowers the suction efficiency of the compressor 4.

When the temperature is high, it is considered that the atmospheric pressure in the collection container 17 rises faster than usual with the collection of the freon, and the flow rate of the freon is reduced.

If the collection speed of the freon decreases due to the high and low temperatures, the efficiency of collection decreases depending on the temperature. Inconvenience may occur due to the difference in the efficiency of collecting the freon. In order to solve this inconvenience, in this embodiment, a heating means for heating the pipe for suctioning the foam of the foam collecting apparatus and a part of the foam compressed by the compressor and liquefied by the condenser are branched. It has a structure in which cooling means is provided to obtain cooling water by dissipating heat in the pipe to perform heat absorption.

As the heating means, the power using the heat of the cooling water of the engine as the heating energy source or the heat radiation of the capacitor can be used as the energy source. By heating, even when the temperature is low, it is possible to prevent the refrigerant from being liquefied on the suction side of the compressor. Therefore, even if the freon is collected when the temperature drops, the freon can be collected smoothly.

Further, in this embodiment, since the cooling means is provided, when the temperature is high, the recovery container is cooled by the cooling means, so that an increase in the pressure in the recovery container can be suppressed. As a result, even at a high temperature, the front can be collected without lowering the injection speed of the fan, and there is an advantage that the front can be collected smoothly even at a high temperature or in a warm region.

In FIG. 6, parts corresponding to those in FIG. 1 are denoted by the same reference numerals. In the figure, 50 indicates ripening means and 60 indicates cooling means. In this example, the heating means 50 includes a water tank 51 and a hot water circulation coil 52 attached to the water tank 51. The hot water circulation coil 52 can be formed, for example, by winding a copper pipe in a coil shape.The hot water circulation coil 52 is attached to the inner wall of the water tank 51, and both ends of the pipe constituting the coil 52 are connected to each other. Protrude out of the water tank 51 and fix it. For example, hot water supplied to a heater for heating the interior of the vehicle is supplied to the hot water circulation coil 52. In other words, this hot water uses the cooling water of the engine 3, and it is possible to obtain about 50 to 70 warm water. This hot water The water in the water tank 51 can be warmed by returning the water to the hot water circulation coil 52.

Into the water tank 51, a coil 53 made of a copper pipe or the like is further inserted, and the tub flowing through the pipe 9 is diverted to the coil 53. That is, the coil 53 is inserted in the middle of the pipe 9, the front is supplied to the oil separator 8 through the coil 53, and the compressor 4 sucks the oil. In this example, an on-off valve 9A is provided in the pipe 9, and a coil 53 is branched and connected before and after the on-off valve 9A. By providing the opening / closing valve 9A in this manner, it is possible to switch between a state in which a flow of the flow through the coil 53 and a state in which the flow of the flown flow is not performed, as required. In other words, when the on-off valve 9A is open, the flow can be made to flow through the pipe 9 and the on-off valve 9A and hardly flow through the coil 53. When the on-off valve 9A is closed, all the flow is diverted to the coil 53 and supplied to the oil separator 8 through the coil 53. The flow sucked through the pipe 9 flows through the coil 53, thereby being heated by the hot water in the water tank 51. Therefore, even if the temperature is low, the front gas is vaporized in the coil 53, and the liquid front does not flow into the unit 4.

It should be noted that the hot ice applied to the hot water circulation coil 52 is not limited to the cooling water of the engine 3 but, for example, hot water heated by the heat of the capacitor 5 may be used. Even if it is not hot water, the water tank 53 can be directly attached to the capacitor 5 so that the heat generated from the capacitor 5 can be used for heating energy. As the heating energy, another electric heater, for example, can be used.

On the other hand, the cooling means 60 is composed of a water tank 61, a coil 62 composed of a copper pipe disposed on the bottom of the water tank 61, and a flash valve 63 connected to one end of the coil 62. can do.

A part of the liquefied flow to be injected into the collection container 17 is diverted and supplied to the side to which the flash valve 63 is connected. When the liquefied front is supplied to the flash valve 63, the front is flushed. Dissipated and vaporized by the shrub valve 63. By this vaporization, the coil 62 is cooled and the water in the water tank 61 is cooled. The flow that has passed through the coil 62 is returned to the suction pipe 9 and is sucked into the compressor 4 through the oil separator 8 and the suction pipe 7. By providing the on-off valve 64 in the middle of the pipe for feeding the front liquid to the flash valve 63, it is possible to control whether or not the front liquid flows into the cooling means 60.

The water tanks 51 and 61 constituting the heating means 50 and the cooling means 60 are selected to have a size and shape that allow the container 17 to be inserted, and heat the collection container 17 as necessary. Or, it is a structure that can be cooled.

In the above-described embodiment, the structure in which the suction pipe 9 is heated by the heating means 50 is described.However, the suction pipe 7 after passing through the oil separator 8 is heated by the heating means 50. It may be. It is also conceivable that both the suction pipes 9 and 7 are heated.

In this embodiment, three-way valves 66 and 67 are provided in the suction pipe 9 and the pipe 12, and the front-panel recovery device is separated by the three-way valves 66 and 67. Is shown as a structure that can be connected to pipes 7 and 12. With such a configuration, the compressor 4 can be operated as a cooler when the front recovery operation is not performed.

FIG. 7 shows the structure of the connection port attached to the tip of the suction hose 10. In this example, a hole is formed from each side of the hexagonal metal block 68 toward the center and communicates with each other, and an original head for connecting the suction hose 10 to one of the holes. This figure shows a case where a connector 70 is attached and a connector 69 is connected to a cooler 11 to be dismantled on another surface. In this example, a pressure gauge 71 capable of indicating positive and negative pressures is attached to one surface, and a structure is shown in which the pressure being collected at the front collection site can be checked. . By providing a connection with such a structure, the number of coolers 11 to be dismantled can be selected to any number from 1 to 4. be able to. Also, the disassembled cooler 11 whose collection has been completed can be freely separated by closing the cock 69 provided in its own suction path even while the other cooler 11 is collecting. Therefore, the to-be-dismantled cooler 11 can be sequentially replaced freely, and it is possible to continuously collect the chlorofluorocarbons from many coolers 11. As the cock 69, as another example, an access valve or a fitting valve which can automatically open the valve by connecting a hose can be used.

At this time, when collecting chlorofluorocarbon from a cooler, refrigerator, etc. using a chlorofluorocarbon collection device, if there is a hose connection port for injecting or extracting fluorocarbon in the closed loop through which the fluorocarbon flows, The charging hose 44 (Fig. 4) should be connected to the hose connection port, and this charging hose 44 should be connected to the chlorofluorocarbon collection device.

When the hose connection port exists in the front flow passage, the front can be easily collected as described above. However, there are many devices that do not have a hose connection. Most refrigerators do not have a hose connection port. In such cases, a method is used in which a pipe for circulating the freon is opened and the freon is recovered through the hole. Fig. 8 shows the structure of a tool that can directly remove the front from the pipe. In the figure, reference numeral 80 generally indicates gripping tools such as pliers and pliers. As is well known, the gripping tool includes a pair of handles 8 1, 8 2, shafts 8 3, 8 4 for connecting the handles 8 1, 8 2 to each other, and extended ends of the handles 8 1, 8 2. It is constituted by a mouth 87 constituted by members 85 and 86 of the above. In this example, the handle 82 is divided into 82 and 86, and when the handle 82 is rotated by the gripping force F, the handle 82 is pushed out in the direction of the arrow 89 by the lever 88. The member 86 is rotated about the shaft 83 in the direction of arrow 91 by the force acting in the direction of arrow 89. The gripping force of the mouth 87 at this time is twice as large as the gripping force F, and shows the case where a plier with a structure that can obtain a large gripping force with a small force is used.

One of the members constituting the mouth 8 7 of the gripping tool 80 has a syringe needle 8 5 The structure is characterized in that a needle 90 having a structure is provided, and a groove 92 for fixing the position of the pipe 98 is provided in the other member 86. The concave groove 92 is a V-shaped groove 92 in this example, and shows a case where the position can be fixed stably even when the diameter of the pipe 98 changes.

The needle 90 is made of wood, and the tip is cut diagonally to make it easier to pierce the pipe 98. Attach a packing material 99 such as rubber to the outer periphery of the base of the needle 90. By pressing this packing material 99 against the pipe 98, it is possible to prevent the front from leaking between the needle 90 and the pipe 98. The needle 90 is formed in a chip shape. The tip 90 is press-fitted and supported in a hole formed in the support fitting 93 through a sealing material such as a ring. The support member 93 is attached to the member 85 by, for example, welding. The needle 90 has a communication hole 90A in the shaft center, and has an injection needle structure. The communication hole 90 A communicates with the relay pipe 94 connected to the upper end side. A cock 95 is connected to the relay pipe 94, and is connected to the hose 10 through the cock 95. Connected to hose collection device (not shown) through hose 10. The communication hole 90 A formed in the needle 90 has a small diameter of about 1 to 2 mm, and is made as small as possible to the cock 95, and the amount of air entering at the start of intake of the front. Is being reduced. Reference numeral 96 denotes a lever for opening and closing the cock 95. Also, a pressure gauge 97 is connected to the upper part of the relay pipe 94 so that the pressure of the flow to be extracted can be measured.

With this configuration, the needle 98 can be inserted into the pipe 98 by engaging the pipe 98 with the groove 92 and tightening the handles 81 and 82 in the positioned state. By opening the cock 95 with the needle 90 pierced into the pipe 98, the front gas extracted from the pipe 96 can be taken out to the hose 10 and collected by the collection device. be able to.

FIG. 9 shows a modified embodiment of the extracting tool. In the embodiment shown in FIG. 8, the inclination of the needle 90 is selected so as to be perpendicular to the extension direction of the pipe 98. FIG. 9 shows a case where the direction of the inclination of the needle 90 is selected to be the same as the direction in which the pipe 98 extends.

That is, when the mounting direction of the needle 90 is searched in the direction shown in FIG. 8, when the tip of the needle 90 is engaged with the pipe 98, a force in the rotating direction is applied to the pipe 98. This makes it easier for the pipe 98 to escape, and the piercing may fail. Also, the needle 90 may be damaged.

On the other hand, when the direction of the inclination of the needle 90 is made to coincide with the extension direction of the pipe 98 as shown in FIG. 9, when the needle 90 pierces the pipe 98, the pipe 98 may escape. Absent. Therefore, the needle 90 can be reliably inserted into the pipe 98 as shown in FIG. Also, the needle 90 is not damaged.

In the embodiment of FIG. 9, the thickness of the concave groove 92 formed in the member 86 is increased, and the groove 92 is formed as long as possible. By forming the concave groove 92 long in this manner, an effect that the position of the pipe 98 can be stably maintained can be obtained.

Further, as shown in FIG. 10, the tip 90 of the needle 90 is provided with a portion 90 B where the inclination becomes gentle at the final portion of the inclined portion of the blade. By providing this portion 90B, the section 98A of the pipe 98 pierced is bent at this portion 90B in a direction to largely escape from the tip of the needle 90. As a result, when suctioning the front gas from the pipe 98, it is possible to prevent the section 98A from being sucked by the cut end of the needle 90 and blocking the communication hole 9OA of the needle 90.

FIGS. 11 and 12 show a preferred embodiment of the collection container 17. In Fig. 11, 17 is a collection container, 17A is a front liquid inlet / outlet pipe, 17B is a manual valve, and 17C is a pipe connection port. That is, the above-described front recovery device is connected to the pipe connection port 17C. The CFC liquid supplied from the pipe connection port 17C is injected into the recovery container 17 through the CFC injection / discharge pipe 17A.

The characteristic structure of this collection container 17 is a horizontal A recess 17E with a small cross-sectional area is provided, and the tip of the fluorocarbon liquid injection / discharge tube 17A is inserted into this recess 17E. The embodiment shown in the figure shows a case in which a cut 17 F is formed at the end of the fluorinated liquid injection / discharge pipe 17 A. By forming the cut 17F, even if the front liquid injection pipe 17A is attached to the bottom of the recess 17E, the front liquid can be injected through the cut 17F. , And can be discharged. In particular, in the case of discharge, the effect of minimizing the remaining amount remaining at the bottom of the concave portion 17E is obtained.

This embodiment further shows a case in which a fitting valve 17D is provided on the top surface of the collection container 17. The fitting valve 17D is generally used for a valve of an automobile tire, and when a pin provided at the valve opening is pushed in, the valve opens and the gas in the collection container 17 can be released. . If the air pressure in the collection container 17 rises while collecting the fluorinated liquid due to the provision of the fitting valve 17D, the collection speed will gradually decrease. Tightening valve 17D Operates the D valve to release air, reducing the pressure in the collection container 17 to increase the collection speed of the fluorinated liquid and the amount that can be collected in the container 17 Can be increased. That is, if the fluorinated liquid is collected without exhausting the air in the collection container 17, the pressure in the collection container 17 reaches the specified value when the fluorinated liquid is not sufficiently collected in the collection container 17. Infusion must be stopped at that point. Therefore, by providing the fitting valve 17D, air can be released from the collection container 17 during collection, and the amount of fluorinated liquid stored in the collection container 17 can be increased. The possible benefits are obtained. Further, by providing the fitting valve 17D, a relief valve (relief valve) can be attached to the fitting valve 17D. By installing a relief valve, when the pressure in the collection container 17 reaches the value set in the relief valve, the air in the collection container 17 can be automatically released to the outside by the relief valve. . In the embodiment shown in FIG. 12, a recess 17 E is formed on the bottom surface of the collection container 17 by the screw lid 17 G, and a fitting valve 17 D is provided on the top surface of the collection container 17. The structure in which the liquid level sensor 100 is provided in the collection container 17 is shown. The liquid level sensor 100 is composed of a metal tube 101 made of a non-magnetic material supported vertically by the collection container 17 and a magnetic material having a ring-shaped cavity penetrating the metal tube 101. And the proximity switch 103 mounted inside the metal tube 101 and detecting the approach of the float 102 and transmitting a contact signal.

The lower end of the metal tube 101 is closed and hermetically sealed, and a ring-shaped stopper 104 for preventing the float 102 from falling off is attached to the outer periphery of the lower end. When the liquid level of the liquefied gas rises and becomes immersed in the liquid, the float 102 moves with the liquid level by buoyancy. The float 102 may be formed of a magnetic material such as iron or a resin material having a low specific gravity, and may be configured by embedding a magnetic material or a ring-shaped permanent magnet in the resin material. it can.

The proximity switch 103 can use, for example, a lead switch or a proximity switch using a magnetically sensitive element, and is turned on or off by the proximity of the float 102. Outgoing. This contact signal is taken out from the detection signal outlet 110. That is, the detection signal outlet 110 is constituted by an electric connector, and a contact signal is taken out to the outside by a pair of electric contacts, for example. By automatically stopping the operation of the compressor of the front recovery device in response to the detection signal, the recovery operation can be stopped at the restricted position of the liquid level of the flown liquid. FIG. 13 shows that the self-propelled engine 3 drives the energy conversion means 110, drives the drive source 111 with the energy converted by the energy conversion means 110, and the drive source 111 drives the compressor An example is shown in which the structure is such that the front is rotated to collect the front. Parts corresponding to those in FIG. 1 are denoted by the same reference numerals. As the energy conversion means 110, for example, a hydraulic pump or a generator can be used. When a hydraulic pump is used, the drive source 1 uses a hydraulic motor. When a generator is used, a motor is used as the driving source. The compressor 4 is driven by the driving source 111, and the compressor 4 sucks the front gas from the cooler 11 to be dismantled, liquefies it with the capacitor 5, and collects it in the collecting container 17. In this case as well, oil is separated from the front gas sucked by the oil sensor and the condenser 18, and the oil separated by the oil separator 13 inserted between the compressor 4 and the condenser 5 is returned to the compressor 4. However, the structure that prevents the compressor 4 from burning is the same as that described with reference to FIG.

In this way, by using the energy conversion means 110 to convert the power of the engine 3 into other energy and using this energy to drive the drive source 111, the compressor 4 is installed. Vehicle location

1 has the advantage that it can be installed anywhere. In other words, for example, a waste collection vehicle that collects waste α on is originally equipped with a power gate for pushing waste into the back. This power gate is driven by a hydraulic motor. Therefore, since this kind of vehicle is equipped with a hydraulic pump, the hydraulic pressure of the hydraulic pump can be used to drive a compressor for collecting the flow.

In addition, a generator is always mounted on the engine of the car, and the generator charges the battery. The motor can be driven using the electric energy source composed of this generator and battery, and the compressor can be configured to drive the CFC recovery compressor.

. Also in this case, since the energy can be transmitted to the drive source 11 1 by the electric wiring, the advantage that the compressor 4 can be arranged at an arbitrary position in the vehicle is obtained.

Fig. 14 shows an embodiment in which a freon collecting device is mounted on the transfer frame 1 12 and the froth collecting device is united. Parts corresponding to those in FIG. 1 are denoted by the same reference numerals. To unite the front recovery unit An engine that operates independently is used as the drive source. By using an engine that operates independently as a drive source, it can be mounted on vehicles and used in places without power supply, and can be transported anywhere. Therefore, a highly versatile front recovery device can be configured.

Industrial applicability

As described above, since the front recovery device according to the present invention is configured to be mounted on a vehicle, it is disposed of at the same time as the recovery of waste products, and becomes a waste product on the spot from a vehicle cooler, a home cooler, a refrigerator, etc. Can be recovered. The collected front gas can be reused, so that it can be used for waste collection operations and for the collection and supply of front gas.

Claims

The scope of the claims

1. A vehicle capable of running using the engine as a self-propelled drive source, a compressor mounted on the vehicle and rotationally driven by the engine, and a device that is disassembled with the suction port of the compressor. A condenser connected to the discharge side of the compressor for liquefying the suctioned gas, and a collection container connected to the outlet of the condenser for storing the liquefied Freon. A front recovery device comprising:

2. A structure in which an oil separator is interposed in the middle of the suction pipe to separate oil contained in the front gas sucked from the device disassembled by the fuel separator from the front gas. 2. The freon collecting device according to item 1.

3. The port according to claim 1, wherein an oil separator is interposed between the compressor and the condenser to separate oil contained in the front gas sucked from the disassembled apparatus. Recovery device.

4. An oil separator is inserted in the suction pipe and between the compressor and the condenser, respectively, and the fluorocarbon gas sucked from the device to be disassembled both in the suction pipe and between the compressor and the condenser is inserted. 2. The front recovery device according to claim 1, wherein the front recovery device has a structure for separating contained oil.

5. An oil separator interposed between the compressor and the condenser, wherein the oil separated and taken out at a time is circulated to a suction port of the compressor to prevent seizure of the compressor. And the freon collecting device according to Item 4.

6. A dryer is connected to the outlet side of the capacitor, and the liquefied flow is collected in the collection container through the dryer. 6. The CFC recovery device according to claim 1.

7. The low-pressure pipe and the low-pressure pipe are supported by penetrating the case, and one end of the low-pressure pipe is used as a gas recovery port connected to a device to be dismantled, and the other end of the low-pressure pipe is mounted on a vehicle. The high pressure pipe is connected to the suction port of the compressor, the high pressure pipe is connected to the collection vessel at the negative end, and the other end of the high pressure pipe is connected to the condenser mounted on the vehicle. Fluorocarbon recovery equipment.

8. The pressure gauge according to claim 7, wherein a pressure gauge is connected to each of the low-pressure pipe and the low-pressure pipe to display the pressures in the low-pressure pipe and the high-pressure pipe, respectively. Collection of Freon

9. A check valve according to claim 7, wherein a check valve is inserted into the high-pressure pipe, and the check valve is configured to prevent the flow of the backflow liquid from the connection port of the recovery container toward the connection port of the condenser. Fluorocarbon recovery equipment.

10. Connect the low pressure pipe with a low pressure switch that operates when the pressure in the low pressure pipe falls below a predetermined value. When the pressure in the high pressure pipe rises above a predetermined value, connect it to the high pressure pipe. An operating high-pressure switch is connected, and an on-off valve is connected to the high-pressure pipe, and this on-off valve is closed by the detection output of both the low-pressure switch and the high-pressure switch. The front recovery device according to claim 7, wherein the front recovery device is configured as follows.

11. The method of claim 10, wherein the engine that drives the compressor is stopped in conjunction with the control of the on-off valve to be closed.

1 2. Provide a pipe that communicates between the high-pressure pipe and the low-pressure pipe, and allow the front liquid to flow through this pipe to vaporize the front liquid in the middle of the pipe. 8. The front recovery device according to claim 7, wherein the front recovery device has a cooling structure.

1 3. Heating means for heating the suction pipe and cooling the collection container 7. The vent collecting apparatus according to claim 1, further comprising a cooling means.

14. The front recovery device according to claim 13, wherein said heating means has a structure utilizing waste heat of an engine.

15. The chlorofluorocarbon recovery apparatus according to claim 13, wherein said heating means has a structure utilizing waste heat generated from a condenser.

16. The chlorofluorocarbon collecting apparatus according to claim 13, wherein said cooling means is constituted by a pipe for discharging a part of the fluorinated liquid to be injected into the collection container toward the suction pipe.

17. The heating means provided in the water tank and configured to heat water contained in the water tank and heat the suction pipe via the heated water. Item 3. The CFC recovery device according to item 3.

18. A structure in which a branch pipe branched from the suction pipe is arranged in the water tank, and an on-off valve for selecting the branch pipe and the suction pipe and passing the front gas is provided. The chlorofluorocarbon collection device according to item 17 of the scope.

1 9. A hole communicating with each other at the center of the metal block is formed on each side of the polygonal metal block. A pressure gauge is connected to one of these holes, and a cock is connected to the other hole. A foam recovery device characterized in that a suction hose is connected to one of the cocks and a hose that is connected to the device to be dismantled is connected to the other cock.

20. A needle with an injection needle structure is attached to one of the members corresponding to the mouth of the gripping tool, and the other member has an M groove for fixing the pipe position. The front passage of the device to be disassembled into this concave groove The above-mentioned needle is press-fitted into this pipe, fluorocarbon gas is extracted from the device to be disassembled through the needle, and the extracted fluorocarbon gas is passed through the suction pipe and the compressor and condenser driven by the vehicle engine. 20. The device according to claim 1, wherein the device is configured to be collected in a collection container.

21. The orifice collecting device according to claim 20, wherein the needle has a structure in which a cut end at the tip is sharp at the tip end and an obtuse portion is provided at the end side of the cut end.

2 2. The collection container has a pipe connection port on the top surface of the cylinder and a manual valve that opens and closes between the pipe connection port and the inside of the cylinder. The liquid injection and discharge pipes are extended, and the front ends of the front liquid injection and discharge pipes are inserted into recesses formed in the bottom of the cylinder. Claims 1, 6, 1, 2, 13, and 16 Or the CFC recovery device described in 20 above.

23. The collection container is provided with a pipe connection port on the top of the cylinder, a manual valve for opening and closing between the pipe connection port and the inside of the cylinder, and a detection signal outlet. The fluorocarbon liquid injection and discharge pipes are extended to the bottom, and the ends of the fluorocarbon liquid injection and discharge pipes are inserted into the 囬 formed at the bottom of the cylinder, and the detection signal outlet is connected to the float provided inside the cylinder. The fan collection device according to any one of claims 1, 6, 12, 12, 13, 16 and 20, wherein a detection signal of a liquid level sensor constituted by a proximity switch is taken out.

24. A vehicle capable of running using the engine as a self-propelled drive source, energy conversion means mounted on the vehicle and rotationally driven by the engine, and energy converted by the energy conversion means. A driving source driven by the compressor, a compressor driven by the driving source, a suction pipe connecting between a suction port of the compressor and a device to be disassembled, and a suction pipe connected to a discharge side of the compressor. And a collection container connected to the outlet side of the condenser for storing the liquefied Freon.

25. The mouth collecting device according to claim 24, wherein the energy conversion means and the driving source are constituted by a hydraulic pump and a hydraulic motor.

26. The front recovery device according to claim 24, wherein the energy conversion means and the drive source are constituted by a generator and a motor.

27. The engine, compressor and capacitor are mounted on the transfer stand, the compressor is driven by the above engine, and the compressor sucks the front gas from the device to be disassembled, and the compressor uses the flower. A chlorofluorocarbon collection device characterized in that the gas is liquefied and collected in a collection container.

28. Through the oil separator between the compressor and the compressor and between the compressor and the capacitor, oil that matches the front gas sucked from the equipment to be dismantled is injected into the compressor at the suction port. The oil separator separated by the interposed oil separator and the oil separated by the oil separator interposed between the compressor and the capacitor is circulated to the suction port side of the compressor. 28. The chlorofluorocarbon recovery device according to claim 24 or claim 27.