JPH1114205A - Refrigerant recovery apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a refrigerant recovery apparatus of smaller size and lighter weight, while attaining higher workability of maintenance by a method wherein an electric part box is mounted between upper end parts of a side plate, a cover is provided to cover the front and the rear of a case body with a lower end part fixed on a bottom plate thereof and both right and left end parts on a side plate thereof and a compressor, an oil separator and a condenser are arranged in the case. SOLUTION: Left and right side plates 43 and 44 are erected with lower parts thereof fixed at both right and left ends of a bottom plate 42 and a roughly box-shaped electric part box 45 having electric parts housed therein is securely mounted on upper parts of left and right side plates 43 and 44. A front panel 46 is securely fixed on the fronts of the left and right side plates 43 and 44 while the lower parts thereof are fixed in contact with the bottom plate 42. Moreover, notch parts 47a are provided at left and right lower parts of a front cover 47 covering a front and put from above on hook parts 48 protruding on the left and on the right of the bottom plate 42. Then, a rear resin cover 50 covering a rear is fixed by a screw or the like in contact with the rear parts of the left and right side plates 43 and 44. A compressor, a condenser, a suction side oil separator and a discharge side oil separator are mounted on the bottom plate 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerant recovery apparatus for recovering refrigerant such as chlorofluorocarbon from a refrigeration apparatus such as an air conditioner without releasing the refrigerant to the atmosphere.

[0002]

2. Description of the Related Art FIGS. 17 to 21 show an example of a conventional CFC recovery device. FIG. 17 is a perspective view of the conventional CFC recovery device as viewed from the front, and FIG. 19 is a sectional view of FIG. 17, FIG. 20 is an exploded perspective view, and FIG. 21 is a circuit diagram.

In FIG. 1, reference numeral 1 denotes a CFC recovery device which collects CFC refrigerant from an air conditioner 2 or the like as a refrigerating device without releasing it to the atmosphere and stores it in a cylinder 3 or the like as a collection container. Reference numeral 4 denotes a sheet metal bottom plate constituting the bottom surface of the chlorofluorocarbon recovery device 1, and reference numeral 5 denotes a substantially box-shaped electric component box provided on an upper portion of the chlorofluorocarbon collection device 1 and containing electric components for controlling the chlorofluorocarbon collection device 1. The electrical component box 5 has an outer shell made of sheet metal and has a width substantially equal to the left and right width of the CFC recovery device 1. Reference numeral 6 denotes a front L-shaped panel that stands upright on the bottom plate 4 and forms an external piping connection portion 7. The electrical component box 5 is supported on the front L-shaped panel 6.

[0004] Reference numeral 8 denotes a sheet metal rear cover fixed to the bottom plate 4 and the electrical component box 5 with screws or the like, and 9 denotes a sheet metal front cover that covers the front end of the rear cover 8 from the front end of the CFC recovery device 1. Thus, the bottom plate 4, the electric component box 5, and the front face L
By using a high-strength rear cover 8 and a front cover 9 made of sheet metal having high strength in addition to the panel 6,
Has a strong structure.

[0005] Reference numeral 10 denotes a connection cover provided on the front cover 9 to cover the external pipe connection 7, and 11 denotes a CFC recovery device 1.
The upper surface plate provided on the upper surface of the
, A switch panel hole 11a and instrument holes 11b and 11c corresponding to the instruments and the like of the electric component box 5 are opened. 1
Reference numeral 2 denotes a belt which is attached to the left and right of the upper part of the CFC recovery device 1, and which is worn by a person on a shoulder or the like when transported.

Next, a description will be given of the arrangement of parts constituting the refrigerant circuit. Reference numeral 13 denotes a compressor fixed on the bottom plate 4 with screws or the like to suck and compress Freon refrigerant. Reference numeral 14 denotes a compressor fixed on the bottom plate 4 side by side with the compressor 13 to cool the Freon refrigerant discharged from the compressor 13. Condenser 15
Is a cooling fan provided at the rear of the condenser 14,
16 is fixed on the bottom plate 4 and the compressor 13
Is a suction-side oil separator connected to the suction side, and the suction-side oil separator 16 separates oil contained in the Freon refrigerant to be recovered. Reference numeral 17 denotes a discharge-side oil separator fixed to the bottom plate 4 and connected to the discharge side of the compressor 13. The discharge-side oil separator 17 is provided inside the compressor 13 discharged together with the Freon refrigerant. The lubricating oil is separated and returned to the compressor 13.

Next, a detailed configuration of the external pipe connection part 7 will be described. Reference numeral 18 denotes a refrigerant suction port for the CFC refrigerant disposed at the middle stage of the external pipe connection part 7, to which a pipe for sucking from the air conditioner 2 or the like, which is a refrigerant to be recovered, is connected. 1
9 is a suction valve that opens and closes a path from the refrigerant suction port 28,
Reference numeral 20 denotes a refrigerant discharge port of the CFC refrigerant disposed below the refrigerant suction port 18, and a pipe for discharging the collected CFC refrigerant to the cylinder 3 or the like is connected. An outlet valve 21 opens and closes the refrigerant outlet 20.

[0008] Reference numeral 22 denotes a sight glass disposed below the external pipe connection part 7 and connected between the outlet valve 21 and the condenser 14. The sight glass 22 visually recognizes the flow of the CFC refrigerant. And a function for confirming the amount of water in the refrigerant by color display or the like. 2
3 is connected between the condenser 14 and the sight glass 22;
A dryer 24 for removing moisture in the refrigerant is disposed at the uppermost stage of the external pipe connection portion 7 and is a waste oil port for discharging the oil collected by the suction-side oil separator 16 to a waste oil container (not shown) or the like. And a waste oil port valve 2 for opening and closing the waste oil port 24.
5 is connected to the outlet 16a of the oil separator 16 on the suction side.

Reference numeral 26 denotes a pressure switch connected between the suction side, which is the low-pressure side, of the compressor 13 and the discharge side, which is the high-pressure side. The compressor 13 is stopped when the refrigerant of the compressor 2 or the like is collected and the amount of the refrigerant to be sucked decreases and the pressure is reduced, or when the pressure on the high pressure side is too high than the normal operating condition, and the refrigerant is stopped. The circuit is opened and closed as described above. 2
Reference numeral 7 denotes a safety valve provided between the discharge port of the compressor 13 and the discharge-side oil separator 17, and when the high-pressure side pressure of the compressor 13 becomes too high when the pressure switch 26 does not work due to a failure or the like. It opens at a predetermined pressure and releases the pressure for safety. 2
Reference numerals 8 and 29 denote low-pressure side and high-pressure side pressure gauges which are connected to the low pressure side and the high pressure side of the compressor 13 together with the pressure switch 26, respectively, and measure and display the pressures on the low pressure side and the high pressure side.

Reference numeral 30 denotes a wind outlet provided on the rear cover 8 facing the fan 15 of the condenser 14, 31 denotes a fan grill provided on the wind outlet 30, and 32 denotes a portion of the front cover 9 near the compressor 13. Wind inlet opened in
33 is a switch panel provided on the electric component box 5,
Switch parts for performing operations such as operation and stop of the CFC recovery device 1 are provided.

Next, the flow of CFC refrigerant recovery will be described. First, the refrigerant circuit of the refrigeration apparatus such as the air conditioner 2 and the refrigerant suction port 18 are connected by a pipe 34, and the collection container such as the cylinder 3 and the refrigerant discharge port 20 are connected by a pipe 35. Then, the suction valve 19 and the discharge valve 21 are opened, and the operation of the compressor 13 is started. Thus, the CFC refrigerant of the air conditioner 2 is sucked from the refrigerant suction port 18 by the suction force of the compressor 13.

The sucked Freon refrigerant is supplied to the suction-side oil separator 16, the compressor 13, the discharge-side oil separator 17, and the condenser 1
It flows in the order of 4. Then, when passing through the suction-side oil separator 16, the oil is separated from the Freon refrigerant, and the separated oil is stored in the suction-side oil separator 16. Further, when passing through the discharge-side oil separator 17, the compressor 1 together with the chlorofluorocarbon refrigerant is used.
The lubricating oil of the compressor 13 discharged from the compressor 3 is separated from the CFC refrigerant, and the separated oil is returned into the compressor 13 from the suction side by the pipe 36.

The CFC refrigerant flowing into the condenser 14 is cooled by the fan 15 to be in a liquid state,
Sight glass 22, outlet valve 21, refrigerant outlet 2
0, passes through the pipe 35, and is collected in the cylinder 3 under the pressure of the compressor 13. Further, in the cylinder 3, the weight and the liquid level are detected, and the operation of the compressor 13 is stopped before the amount of collected fluorocarbon exceeds the allowable amount. In this example, the weight is detected by the weight meter 3a, and the compressor 13 is stopped.

The oil collected in the suction-side oil separator 16 may be collected at the same time as the Freon refrigerant.
Since the waste oil port 24 is located at a position higher than the suction side oil separator 16, after the recovery of the CFC refrigerant is completed, the waste oil container is brought into contact with the waste oil port 24, the waste oil valve 24 is opened, and the suction side oil separation is performed. This is accomplished by applying pressure to the vessel 16 to force the oil out.

[0015]

In the conventional chlorofluorocarbon recovery apparatus 1 constructed as described above, large front and rear cover sheets 8 and 9 made of sheet metal are used to secure sufficient strength. Weight was hindered. Also,
The weight balance was poor because the compressor 13 and the condenser 15, which are heavy objects, were arranged side by side. Further, when performing maintenance of the apparatus, particularly maintenance of the rear part, the heavy rear cover 8 must be removed.
Handling is difficult, and in the state where the rear cover 8 is removed, the support strength of the electric component box 5 is greatly reduced.
Attention was required for the work. Furthermore, the appearance of the device was poor because the air suction port 30 was required in front of the device. Further, the portion of the Freon refrigerant to be recovered lower than the outlet 20 of the condenser 14 was difficult to be discharged. Further, in order to discharge the waste oil collected by the suction-side oil separator 16 from the waste oil port 24, it is necessary to perform an operation such as pushing with a refrigerant gas or the like, and the workability is low.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is possible to reduce the size and weight of the entire system and to improve the workability of maintenance. The aim is to obtain a device.

[0017]

According to a first aspect of the present invention, there is provided a refrigerant recovery apparatus comprising: a bottom plate; a pair of side plates erected at right and left ends of the bottom plate; and a bridge between upper ends of the pair of side plates. An electric appliance box, a case body including a reinforcing panel whose lower end is fixed to a bottom plate and both left and right ends are fixed to a pair of side plates, and front and rear covers that cover the front and rear of the case main body. And a recovery device main body provided in the case and having a compressor that sucks the refrigerant, an oil separator that separates oil contained in the refrigerant, and a condenser that condenses the refrigerant. Things.

In the refrigerant recovery apparatus according to the second aspect of the present invention, the width of the side plate is smaller than the front and rear widths of the bottom plate, and the front cover and the rear cover are extended to the front and rear ends of the side plate to have a U-shaped cross section. Is what it is.

According to a third aspect of the present invention, in the refrigerant recovery apparatus, the width of the pair of side plates is substantially the same as each other, and the pair of side plates are disposed opposite to each other at a substantially central portion of the bottom plate in the front-rear direction. Things.

According to a fourth aspect of the present invention, at least one of the front cover and the rear cover is made of plastic.

According to a fifth aspect of the present invention, the upper surface of the electrical component box is covered by an upper plate whose front and rear widths are substantially the same as the pair of side plates.

According to a sixth aspect of the present invention, in the refrigerant recovery apparatus, a step portion is provided in the left and right middle of the reinforcing panel such that the right surface is rearward from the left surface, and the right surface of the reinforcing panel recessed by the step portion is provided. In addition, an external pipe connection portion to which a pipe for external connection is connected is provided.

According to a seventh aspect of the present invention, in the refrigerant recovery apparatus, a panel notch for allowing the oil separator to escape is provided in the reinforcing panel, and the panel notch is closed by a plastic panel cover that covers the oil separator. It is something that has been broken.

The refrigerant recovery apparatus according to the invention of claim 8 is provided with a wind suction port near the compressor on the side plate.

According to a ninth aspect of the present invention, in the refrigerant recovery apparatus, the compressor is fixed on the bottom plate, and a wind suction port is provided below the compressor on the bottom plate.

According to a tenth aspect of the present invention, there is provided a refrigerant recovery apparatus comprising:
A case in which an electrical component box is provided in the upper part, a compressor that is provided in one of the right and left rear portions in the case, and a compressor that sucks the refrigerant, and an oil that is included in the refrigerant that is provided in the front left portion in the case An oil separator, a condenser provided on one of the left and right sides of the rear part in the case to condense the refrigerant, and an external pipe connection part provided on the front right side in the case and connected to a pipe for external connection. It is provided.

[0027] The refrigerant recovery apparatus according to the eleventh aspect of the present invention comprises:
The compressor is arranged on the rear right side, and the condenser is arranged on the rear left side.

According to a twelfth aspect of the present invention, there is provided a refrigerant recovery apparatus comprising:
A compressor for sucking the refrigerant, an oil separator for separating oil contained in the refrigerant, a condenser for condensing the refrigerant, and a refrigerant inlet to which a pipe for sucking the refrigerant is connected, for discharging the refrigerant An external pipe connection portion having a refrigerant discharge port to which the pipe is connected and a waste oil port for discharging oil accumulated in the oil separator, wherein the waste oil port is connected to the refrigerant suction port and the refrigerant discharge port at the external pipe connection portion. Are also arranged below.

A refrigerant recovery apparatus according to a thirteenth aspect of the present invention
The refrigerant inlet is located above the refrigerant outlet.

According to a fourteenth aspect of the present invention, there is provided a refrigerant recovery apparatus comprising:
The height of the oil outlet of the oil separator is higher than the height of the waste oil port.

According to a fifteenth aspect of the present invention, there is provided a refrigerant recovery apparatus comprising:
An oil separator is fixed via a fixing member on a bottom plate that supports a compressor and a condenser.

[0032] A refrigerant recovery apparatus according to a sixteenth aspect of the present invention is characterized in that:
A compressor that sucks the refrigerant, an oil separator that separates oil contained in the refrigerant, a condenser that condenses the refrigerant, and a compressor panel that is disposed above the compressor, the oil separator, and the condenser, and has a switch panel on the upper surface. An electric component box provided, comprising a top plate having a switch panel hole corresponding to the switch panel and covering an upper surface of the electric component box, and a dish-shaped portion surrounding the switch panel on the upper surface of the electric component box, An extension extending from the cut provided in a part of the dish-shaped portion to the outside of the electrical component box is provided, and the periphery of the switch panel hole in the top plate is dished inside the dish-shaped portion. A flange that overlaps in the height direction of the part is formed.

[0033]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a perspective view showing a fluorocarbon recovery apparatus according to Embodiment 1 of the present invention, FIG. 2 is a perspective view of the apparatus shown in FIG. 1 as viewed from the rear, and FIG. 3 is a perspective view showing a state in which covers of FIG. 4, FIG. 4 is an exploded perspective view of FIG. 3, FIG. 5 is an exploded perspective view of main structural parts of FIG. 1, FIG. 6 is a front view of the apparatus of FIG. 1 with covers removed, and FIG. FIG. 8 is a rear view showing a state in which covers of the apparatus are removed, FIG. 8 is a right side view showing a state in which the covers of the apparatus in FIG. 1 are removed, and FIG.
10 is a sectional view taken along line IX-IX of FIG. 6, FIG. 10 is a sectional view taken along line XX of FIG. 1, FIG. 11 is a circuit diagram of the apparatus of FIG. 1, and FIG. FIG.

In the figure, reference numeral 41 denotes a CFC recovery device which collects CFC refrigerant from an air conditioner 2 or the like as a refrigerating device without releasing it to the atmosphere and stores it in a cylinder 3 or the like as a collection container. Reference numeral 42 denotes a sheet metal bottom plate, and reference numerals 43 and 44 denote sheet metal left and right plates which are fixed to the right and left ends of the bottom plate 42 and have lower portions fixed to the left and right sides to form left and right side surfaces of the CFC recovery device 41. The front and rear widths of 43 and 44 are substantially the same and substantially symmetrical. Each of the side plates 43 and 44 has a width shorter than the depth dimension of the CFC recovery device 41, for example, a width slightly more than half of the depth dimension, and is disposed substantially at the center in the depth direction.

Reference numeral 45 denotes a substantially box-shaped electrical component box which is mounted and fixed on the upper portions of the left and right side plates 43 and 44 and stores electrical components for controlling the CFC recovery device 41.
The outer shell is formed of sheet metal, and is formed to have a width substantially between the left and right side plates 43 and 44. Reference numeral 46 denotes a front panel as a reinforcing plate made of sheet metal fixed to the front portions of the left and right side plates 43 and 44 and having a lower portion abutting and fixed to the bottom plate 42. Are also fixed. The case body in this example includes a bottom plate 42 and a side plate 4.
3, 44, an electric component box 45 and a front panel 46.

Next, other covers for covering the housing will be described. Reference numeral 47 denotes a plastic rectangular front cover that covers the front surface of the chlorofluorocarbon recovery device 41. The front and rear dimensions around the side surface extend to the front and rear ends of the left and right side plates 43 and 44. In addition, cutouts 47 a are provided at lower left and right sides of the front cover 47, respectively, and are hooked from above on hooks 48 projecting left and right of the bottom plate 42. 49
Is a locking component provided on the upper part of the front cover 47 and detachably connected to a fixing component (not shown) on the front panel 46 side.

Reference numeral 50 denotes a plastic rear cover that covers the rear surface of the CFC recovery device 41.
Is formed in a substantially symmetrical shape with the front cover 47. The rear cover 50 is in contact with the rear portions of the left and right side plates 43 and 44 and is fixed with screws or the like. The case in this example includes the case body, the front cover 47, and the rear cover 50 described above. Reference numeral 51 denotes an upper plate made of sheet metal which covers the upper surface of the electric component box 45. The width of the upper plate 51 is substantially the same as the width of the left and right side plates 43 and 44 in the front-rear direction.

Reference numeral 52 denotes a plastic panel cover for closing a panel cutout 46a provided at the lower left portion of the front panel 46. Reference numeral 53 denotes a handle formed on the upper part of the left and right side plates 43 and 44, respectively. 44 handles 53
This is a belt that is attached to and hangs underneath, and is worn by a person on a shoulder or the like when transporting the device.

Next, the arrangement of components constituting the refrigerant circuit will be described. A compressor 55 is fixed on the bottom plate 42 by screws or the like via a vibration isolating rubber 56 or the like, and a compressor 57 for sucking and compressing the CFC refrigerant, and 57 is fixed on the bottom plate 42 on the side of the compressor 55, A condenser 58 for cooling and condensing the Freon refrigerant discharged from the condenser 57 is a cooling fan provided at the rear of the condenser 57. Also, the condenser 57
The left and right start-up parts 59 erected on the bottom plate 42 are arranged as high as possible so that the condensed Freon refrigerant can be easily discharged to the cylinder 3 and the like.

Reference numeral 60 is fixed on the bottom plate 42 via a fixed part 61 in front of the condenser 57, and
5 is a suction-side oil separator connected to the suction side, and this suction-side oil separator 60 is for separating oil contained in the collected CFC refrigerant. The oil separated and stored in the suction-side oil separator 60 is naturally discharged by gravity from an oil outlet 60a provided at a lower portion.

Reference numeral 62 denotes a discharge-side oil separator fixed on the bottom plate 42 in front of the condenser 57 and connected to the discharge side of the compressor 55.
Is for separating the lubricating oil discharged from the compressor 55 together with the Freon refrigerant and returning the oil to the compressor 55. The oil returning from the discharge-side oil separator 62 to the compressor 55 is supplied to the compressor 5
5, the discharge-side oil separator 62 may be disposed below, and is disposed below the suction-side oil separator 60. In addition, these oil separators 60 and 62
Since it is arranged below the panel cutout 46a on the front surface on the left side of the CFC recovery device 41, assembling work such as mounting is easy, and maintenance is also easy.

Reference numeral 63 denotes an external pipe connection formed on the front face of the front panel 46. A pipe for sucking the refrigerant to be collected from the air conditioner 2 and the like, a pipe for discharging the collected Freon refrigerant to the cylinder 3 and the like, and a suction pipe. It is a portion to which a pipe or the like for discharging the oil collected by the side oil separator 60 is connected. Further, the external piping connection portion 63 is disposed on the front right side of the Freon collection device 41 so that a right-handed person who occupies most of the work can easily work. Further, the main body of the recovery device in this example has a compressor 55, a condenser 57, a fan 58, oil separators 60 and 62, and an external piping connection portion 63.

Next, the detailed configuration of the external piping connection section 63 will be described. Reference numeral 64 denotes a refrigerant inlet for a Freon refrigerant, which is disposed at the upper right end of the external pipe connection part 63 and to which a pipe for sucking the refrigerant to be collected from the air conditioner 2 or the like is connected.
Reference numeral 5 denotes a dry core provided at the refrigerant inlet 64 for removing foreign matter and moisture in the refrigerant, and 66 denotes a suction valve connected to the rear of the dry core 65 for opening and closing a path from the refrigerant inlet 64.

Numeral 67 is disposed below the refrigerant inlet 64.
A refrigerant outlet to which a pipe for discharging the collected Freon refrigerant to the cylinder 3 or the like is connected, 68 is an outlet valve for opening and closing the refrigerant outlet 67, 69 is an outlet valve 68 and the condenser 5
The sight glass 69 has a function of visually confirming the flow of the CFC refrigerant and a function of confirming the amount of water in the refrigerant by color display or the like. I have.

Reference numeral 70 is disposed below the refrigerant outlet 67 and is connected to the oil outlet 60a of the oil separator 60 on the suction side. A waste oil port 71 for opening and closing the waste oil port 70; Further, the waste oil port 70 is disposed at a position where the oil accumulated in the suction side oil separator 60 flows out just by opening the waste oil port valve 71. However, if the height of the waste oil port 70 is too low,
Since the operability of the waste oil port 70 is impaired, for example, the waste oil port 70 is provided at a suitable height between the floor surface on which the apparatus is placed and the waste oil port 70 so that a hand or a waste oil container can be inserted.

Reference numeral 72 denotes a pressure switch connected between the suction side, which is the low pressure side of the compressor 55, and the discharge side, which is the high pressure side. The pressure switch 72 reduces the pressure on the low pressure side and provides air conditioning. The compressor 55 is stopped when the refrigerant of the compressor 2 or the like is collected and the amount of the refrigerant to be sucked decreases and the pressure is reduced, or when the pressure on the high pressure side is too high than a normal operating condition, the compressor 55 is stopped to stop the refrigerant collection. The circuit is opened and closed as described above. 7
Reference numeral 3 denotes a safety valve provided between the discharge port of the compressor 55 and the discharge-side oil separator 62. If the high-pressure side pressure of the compressor 55 becomes too high when the pressure switch 72 does not work due to a failure or the like, It opens at a predetermined pressure and releases the pressure for safety. 7
Reference numerals 4 and 75 denote low-pressure side and high-pressure side pressure gauges which are connected to the low pressure side and the high pressure side of the compressor 55 together with the pressure switch 72, respectively, and measure and display the pressures on the low pressure side and the high pressure side.

Reference numeral 76 denotes the rear cover 5 facing the fan 58.
0, a fan grill provided at the wind outlet 76, 78 a right side plate 44
The wind suction port 78 is provided near the compressor 55, and a plurality of horizontally long holes are arranged vertically in two rows on the left and right in the wind suction port 78.

Reference numeral 79 denotes a switch panel provided on the upper surface of the electrical component box 45 and provided with switch components for performing operations such as starting and stopping the CFC recovery device 41. Is provided with a dish-shaped portion (convex portion) 80. An extension 81 is formed to extend from the cut provided in a part of the dish-shaped portion 80 to the outside of the electric component box 45. Further, the upper panel 51 is provided with a switch panel hole 51 a which is slightly smaller than the dish-shaped portion 80. A flange 51b is formed on the periphery of the switch panel hole 51a so as to be overlapped in the height direction of the dish 80 inside the dish 80. Furthermore, the upper surface plate 5
1 is provided with instrument holes 51c and 51d corresponding to the low pressure side and high pressure side pressure gauges 74 and 75, respectively.

Reference numeral 82 denotes a foot provided on a square on the lower surface of the bottom plate 42, and reference numerals 83 and 84 denote flare pipe connection parts provided on pipes connected to the suction port 55b and the discharge port 55a of the compressor 55, respectively. In addition, by attaching and detaching these flare pipe connection portions 83 and 84, the compressor 55 can be easily replaced in the event of a failure or the like.

Next, the flow of CFC refrigerant recovery will be described. First, the refrigerant circuit of the refrigeration apparatus such as the air conditioner 2 and the refrigerant suction port 64 are connected by the pipe 34, and the collection container such as the cylinder 3 and the refrigerant discharge port 67 are connected by the pipe 35. Then, the suction valve 66 and the discharge port valve 68 are opened, and the operation of the compressor 55 is started. As a result, the CFC refrigerant of the air conditioner 2 is sucked from the refrigerant suction port 64 by the suction force of the compressor 55.

The drawn Freon refrigerant is supplied to the dry core 6
5. The oil flows in the order of the suction-side oil separator 60, the compressor 55, the discharge-side oil separator 62, and the condenser 57. In the dry core 65, foreign matter and moisture are removed, and in the suction-side oil separator 60, oil is separated from Freon refrigerant. The oil separated here is
It is stored in the suction side oil separator 60. When passing through the discharge-side oil separator 62, the compressor 55
The lubricating oil of the compressor 55 discharged from the compressor 55 is separated from the CFC refrigerant, and the separated oil is returned into the compressor 55 from the suction side by the pipe 36.

The Freon refrigerant flowing into the condenser 57 is cooled by the fan 58 and becomes liquid,
9, through the outlet valve 68, the refrigerant outlet 67, and the pipe 35, the cylinder 3 by the pressure of the compressor 55 and the gravity of the liquid refrigerant.
Will be collected. Further, in the cylinder 3, the weight and the liquid level are detected, and the operation of the compressor 55 is stopped before the amount of collected fluorocarbon exceeds the allowable amount. In this example, the weight is detected by the weight meter 3a, and the compressor 55 is stopped.

The oil collected in the suction-side oil separator 60 may be recovered at the same time as the recovery of the refrigerant, or may be performed after the recovery of the refrigerant. In either case, apply the waste oil container to the waste oil port 70,
When the waste oil port valve 71 is opened, the waste oil is discharged by gravity as described above.

Further, when the fan 58 rotates with the front and rear covers 47 and 50 attached, the other parts are separated, so that the air is mainly sucked from the wind suction port 78 and the compressor is likely to be heated to a high temperature. 55 is cooled first,
Thereafter, the condenser 57 is cooled and the refrigerant to be recovered is condensed. The air that has cooled the condenser 57 is discharged out of the CFC recovery device 41 from the air outlet 76.

In such a CFC recovery device 41, the periphery is assembled in a frame shape by the bottom plate 42, the left side plate 43, the right side plate 44, and the electric component box 45, and the respective sides are fixedly arranged so as to be supported by the front panel 46. In addition, the strength of the case body can sufficiently withstand maintenance work and the like, and the workability of maintenance is improved. Further, since the case body has sufficient strength, the front and rear covers 47 and 50 can be made of plastic, so that the entire body can be reduced in weight and can be easily transported and handled.

Further, since the front cover 47 and the rear cover 50, which are substantially symmetrical in shape, are arranged back and forth with the left and right side plates 43 and 44 interposed therebetween, the outer shape of the chlorofluorocarbon collection device 41 is also symmetrical in front and rear, and the appearance is improved. . Further, the front and rear covers 47, 50 are made of plastic, and the left and right side plates 43, 44 are formed.
Is made of sheet metal, the symmetry between the front cover 47 and the rear cover 50 is further emphasized due to the difference in texture, and the design is improved. Furthermore, the front cover 47 and the rear cover 5
0 and the same color, and the left and right side plates 43 and 44
If the color is different from 50, the symmetry between the front cover 47 and the rear cover 50 is further emphasized, and the design is improved.

Further, the upper surface plate 51 and the left and right side plates 43, 44
Are connected in a continuous belt shape, so that the strength of the entire device is increased and the design is improved. Also, the top plate 5
If the color of 1 and the left and right side plates 43, 44 is the same, the design is further improved.

Further, since the condenser 57 is arranged at a high position via the rising part 59, the condensed Freon refrigerant can be easily discharged to the cylinder 3 or the like. Further, since the suction-side oil separator 60 is disposed at a position substantially equal to or higher than the waste oil port 70, the stored oil can be naturally discharged from the oil outlet 60a by gravity. However, if the height of the suction-side oil separator 60 is increased, the strength of the fixed part 61 is reduced.
And the height of the waste oil port 70 may be approximately the same.

Further, since the oil separators 60 and 62 are covered with the panel cover 52, erroneous operation can be prevented, and the design can be improved.

Further, the electric component box 45 is placed on the upper
5 is on the left or right side of the rear, the condenser 57 is on the left or right side of the rear, and the oil separators 60 and 62 are on the front left.
Since the external piping connection portions 63 are arranged on the front right side, heavy parts are dispersed in the squares of the CFC recovery device 41, so that the weight balance is improved and the handling is facilitated. Further, by arranging them in a square, the whole can be downsized as compared with the related art.

Here, the compressor 55 and the condenser 57 may be arranged left and right in terms of weight balance, but as in this example, the compressor 55 is arranged on the right and the condenser 57 is arranged on the left. Then, a wide space is created between the condenser 57 and the oil separators 60 and 62, and various pipes can be arranged in this space, and the pipe connection can be facilitated.

Further, a waste oil port 7 for discharging oil by gravity
0 is disposed at the lower part of the external pipe connection portion 63, and a refrigerant outlet 67 is disposed thereon, and a refrigerant inlet 64 which may be located at any position in the upper and lower portions is disposed thereon. There is no useless space in the vertical direction of the part 63, so that operation such as pipe connection from the outside can be easily performed, and discharge of the CFC refrigerant and waste oil treatment become easy.

At a substantially middle position between the left and right sides of the front panel 46, a stepped portion 46b is provided which is bent back and forth so that the right side is deeper than the left side over almost the entire vertical direction. The strength in the front-rear direction of the whole 41 is increased, and the space before and after the external pipe connection portion 63 can be widened, so that operability can be improved.

Further, the flange 51b is formed on the upper surface plate 51, and the dish-shaped portion 80 and the extending portion 81 are provided around the switch panel 79. The electric component box 45 is blocked by the baffle 51 b and the dish-shaped portion 80, and is prevented from entering the electric component box 45, and is discharged from the extending portion 81 to the outside of the electric component box 45. Therefore, failure of the electrical components in the electrical component box 45 due to the intrusion of water is prevented.

Further, the wind suction port 78 is connected to the compressor 5
5, the temperature of the compressor 55 becomes high.
Can be cooled sufficiently. Further, since the wind suction port 78 is provided not at the front cover 47 but at the lower portion of the side surface which is relatively inconspicuous, the design is improved.

Embodiment 2 In the first embodiment, the wind suction port 78 is opened only at the lower part of the right side plate 44. However, as shown in FIG.
A wind suction port 85 may be formed in the lower portion, and in this way, the compressor 55 can be cooled even better.
Further, since the compressor 55 fixed portion of the bottom plate 42 is reinforced by fixing the compressor 55, sufficient strength can be maintained even if the wind suction port 85 is provided.

Embodiment 3 Further, in the first embodiment, the front and rear widths of the left and right side plates 43 and 44 are smaller than the front and rear widths of the bottom plate 42, but may be the same as the width of the bottom plate 42 as shown in FIG. In this case, the design is inferior to that of the first embodiment, and although it is slightly difficult to access the left and right portions of the front and rear portions of the CFC recovery device 41, the workability of maintenance is better than that of the related art. In the first embodiment, the front and rear covers 47 and 50 having a U-shaped cross section are used as shown in FIG. 12, but the front and rear covers 47 and 50 are flat in the example of FIG.

Embodiment 4 Further, the first embodiment
In the above, the front and rear widths of the left and right side plates 43 and 44 are the same, but may be different from each other, for example, as shown in FIG.

Embodiment 5 Furthermore, in the first embodiment, the compressor 55 is arranged on the right side and the condenser 57 is arranged on the left side. However, for example, the compressor 55 can be arranged in the opposite direction as shown in FIG.

[0070]

As described above, the refrigerant recovery apparatus according to the first aspect of the present invention has a bottom plate, a pair of side plates standing upright on the left and right ends of the bottom plate, and a bridge between the upper ends of the pair of side plates. A case body is constituted by an electric appliance box, and a reinforcing panel in which a lower end portion is fixed to a bottom plate and left and right end portions are respectively fixed to a pair of side plates, and a front and rear cover covers the front and rear of the case main body. Therefore, the strength of the case main body in a state where the front and rear covers are removed during the maintenance work can be secured, and the workability of the maintenance can be improved.

In the refrigerant recovery apparatus according to the second aspect of the present invention, the width of the side plate is made smaller than the front and rear widths of the bottom plate, and the front cover and the rear cover are extended to the front and rear ends of the side plate to have a U-shaped cross section. Maintenance work with the front and rear covers removed can be performed easily, and workability can be further improved.

In the refrigerant recovery apparatus according to the third aspect of the present invention, the width of the pair of side plates is substantially the same as each other, and the pair of side plates are disposed to face each other substantially at the center of the bottom plate in the front-rear direction.
The workability of maintenance can be improved, and the designability can be improved.

In the refrigerant recovery apparatus according to the fourth aspect of the present invention, at least one of the front cover and the rear cover is made of plastic, so that the apparatus can be reduced in weight.
Transport and handling can be facilitated.

In the refrigerant recovery apparatus according to the fifth aspect of the present invention, since the upper surface of the electrical component box is covered by the upper surface plate whose front and rear widths are substantially the same as the pair of side plates, the strength of the device can be improved. At the same time, the design can be improved.

According to a sixth aspect of the present invention, in the refrigerant recovery apparatus, a step portion is provided in the middle of the reinforcing panel so that the right surface is rearward from the left surface, and the external pipe connection portion is provided on the right surface of the reinforcing panel recessed by the step portion. Is provided, the strength in the front-rear direction of the device can be improved, and the front-rear dimension of the external pipe connection can be widened to facilitate the work on the external pipe connection.

According to the refrigerant recovery apparatus of the present invention, the panel notch for allowing the oil separator to escape is provided in the reinforcing panel, and the panel notch is closed by the plastic panel cover covering the oil separator. It is possible to improve the appearance when the oil separator is removed, and to prevent erroneous operation of the oil separator.

According to the refrigerant recovery apparatus of the present invention, since the air suction port is provided near the compressor on the side plate, it is not necessary to provide the air suction port on the front surface of the apparatus, and the design can be improved. The compressor can be efficiently cooled.

According to the ninth aspect of the present invention, since the compressor is fixed on the bottom plate and the air suction port is provided below the compressor on the bottom plate, the air suction port can be made inconspicuous. And the compressor can be efficiently cooled.

According to a tenth aspect of the present invention, in the refrigerant recovery apparatus, an electric component box is provided at an upper portion of the case, a compressor is provided at one of right and left portions of a rear portion of the case, an oil separator is provided at a front left portion of the case, The condenser is located on the right or left side of the rear part of the case, and the external piping connection part is located on the right side of the front part of the case.This improves the weight balance of the entire device and improves maintenance workability. It is possible to reduce the size of the case by effectively utilizing the space in the case.

In the refrigerant recovery apparatus according to the eleventh aspect of the present invention, since the compressor is disposed on the rear right side and the condenser is disposed on the rear left side, piping connection can be facilitated.

In the refrigerant recovery apparatus according to the twelfth aspect of the present invention, since the waste oil port is disposed below the refrigerant suction port and the refrigerant discharge port, it is possible to easily discharge the oil accumulated in the oil separator.

In the refrigerant recovery apparatus according to the thirteenth aspect, the refrigerant suction port is disposed above the refrigerant discharge port.
Waste oil can be easily discharged, and the collected refrigerant can be easily discharged to a collection container or the like.

In the refrigerant recovery apparatus according to the fourteenth aspect of the present invention, the height of the oil outlet of the oil separator is greater than the height of the waste oil port.
The oil accumulated in the oil separator can be discharged by gravity without applying pressure to extrude the oil, thereby greatly improving workability.

In the refrigerant recovery apparatus according to the fifteenth aspect, the oil separator is fixed via the fixing member on the bottom plate supporting the compressor and the condenser, so that the oil separator is securely fixed at an appropriate height. can do.

A refrigerant recovery apparatus according to a sixteenth aspect of the present invention provides a dish-shaped portion surrounding the switch panel on the upper surface of the electric component box, and extends to the outside of the electric component box from a cut provided in a part of the dish-shaped portion. An extension is provided, and a flange that overlaps the height of the dish inside the dish is formed around the periphery of the switch panel hole on the top plate, so that water that has entered the switch panel can be easily removed. It can be removed and the waterproofness can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a fluorocarbon recovery device according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view of the apparatus of FIG. 1 as viewed from the rear.

FIG. 3 is a perspective view showing a state where covers of FIG. 1 are removed.

FIG. 4 is an exploded perspective view of FIG.

FIG. 5 is an exploded perspective view of the main structural parts of FIG.

FIG. 6 is a front view showing a state in which covers of the apparatus of FIG. 1 are removed.

FIG. 7 is a rear view showing a state where covers of the apparatus of FIG. 1 are removed.

8 is a right side view showing a state in which covers of the apparatus of FIG. 1 are removed.

FIG. 9 is a sectional view taken along line IX-IX of FIG. 6;

FIG. 10 is a sectional view taken along line XX of FIG. 1;

FIG. 11 is a circuit diagram of the device of FIG. 1;

FIG. 12 is a sectional view showing a state where the front and rear covers are attached to FIG. 9;

FIG. 13 is a sectional view showing a CFC recovery device according to Embodiment 2 of the present invention.

FIG. 14 is a sectional view showing a CFC recovery device according to a third embodiment of the present invention.

FIG. 15 is a sectional view showing a CFC recovery device according to a fourth embodiment of the present invention.

FIG. 16 is a sectional view showing a CFC recovery device according to a fifth embodiment of the present invention.

FIG. 17 is a perspective view showing an example of a conventional CFC recovery device.

18 is a perspective view of the device of FIG. 17 as viewed from the rear.

19 is a cross-sectional view of the device of FIG.

20 is an exploded perspective view of the device of FIG.

21 is a circuit diagram of the device of FIG.

[Explanation of symbols]

42 bottom plate, 43 left side plate, 44 right side plate, 45 electrical box, 46 front panel, 46a panel notch, 47
Front cover, 50 Rear cover, 51 Top plate, 51
a switch panel hole, 51b flange, 52 panel cover, 55 compressor, 57 condenser, 60 suction side oil separator, 61 fixing member, 63 external piping connection, 64
Refrigerant inlet, 67 Refrigerant outlet, 70 Waste oil port, 7
8,85 wind inlet, 79 switch panel, 80
Dish, 81 extension.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasuyuki Okamura 1-6-24 Toyota, Shizuoka-shi, Shizuoka Pref.

Claims (16)

[Claims] 1. A bottom plate, a pair of side plates erected on the left and right ends of the bottom plate, an electric appliance box erected between upper ends of the pair of side plates, and a lower end portion on the bottom plate, left and right end portions. A case having a case body including a reinforcing panel fixed to the pair of side plates, a front and a rear cover covering the front and rear of the case body, and provided in the case to suck the refrigerant. A refrigerant recovery device comprising: a recovery device main body including a compressor that performs compression, an oil separator that separates oil contained in the refrigerant, and a condenser that condenses the refrigerant. 2. The width of the side plate is smaller than the width of the front and rear of the bottom plate, and the front cover and the rear cover are extended to the front and rear ends of the side plate to have a U-shaped cross section. Item 2. The refrigerant recovery device according to Item 1. 3. The pair of side plates having substantially the same width as each other, and the pair of side plates are disposed so as to face each other at a substantially central portion of the bottom plate in the front-rear direction. Refrigerant recovery device. 4. The refrigerant recovery device according to claim 1, wherein at least one of the front cover and the rear cover is made of plastic. 5. The refrigerant recovery device according to claim 3, wherein an upper surface of the electrical component box is covered by an upper plate whose front and rear widths are substantially the same as the pair of side plates. . 6. A left-right intermediate portion of the reinforcing panel is provided with a step portion such that the right surface is rearward from the left surface, and a pipe for external connection is provided on the right surface of the reinforcing panel recessed by the step portion. The refrigerant recovery device according to any one of claims 1 to 5, wherein an external pipe connection portion to be connected is provided. 7. The reinforcing panel is provided with a panel notch for allowing the oil separator to escape, and the panel notch is closed by a plastic panel cover that covers the oil separator. The refrigerant recovery device according to any one of claims 1 to 6, wherein 8. The refrigerant recovery device according to claim 1, wherein a wind suction port is provided near the compressor on the side plate. 9. The compressor according to claim 1, wherein the compressor is fixed on a bottom plate, and a wind suction port is provided below the compressor on the bottom plate. Refrigerant recovery device. 10. A case in which an electric component box is provided in an upper part, a compressor provided in one of right and left of a rear part in the case to suck a refrigerant, and a compressor provided in a front left side in the case. An oil separator for separating oil contained in the refrigerant,
A condenser provided on one of the right and left sides of the rear part in the case to condense the refrigerant; and an external pipe connection part provided on the front right side of the case and connected to a pipe for external connection. A refrigerant recovery device characterized by the above-mentioned. 11. The compressor according to claim 1, wherein the compressor is disposed on the rear right side, and the condenser is disposed on the rear left side.
0. The refrigerant recovery device according to 0. 12. A refrigerant suction connected to a compressor for sucking a refrigerant, an oil separator for separating oil contained in the refrigerant, a condenser for condensing the refrigerant, and a pipe for sucking the refrigerant. Port, an external pipe connection having a waste oil port for discharging oil collected in the oil separator and a refrigerant discharge port to which a pipe for discharging the refrigerant is connected, and the external pipe connection, A refrigerant recovery device, wherein the waste oil port is disposed below the refrigerant suction port and the refrigerant discharge port. 13. The refrigerant recovery device according to claim 12, wherein the refrigerant suction port is disposed above the refrigerant discharge port. 14. The oil separator according to claim 1, wherein the height of the oil outlet is greater than the height of the waste oil port.
The refrigerant recovery device according to claim 2 or 13. 15. The refrigerant recovery device according to claim 14, wherein the oil separator is fixed via a fixing member on a bottom plate that supports the compressor and the condenser. 16. A compressor for sucking a refrigerant, an oil separator for separating oil contained in the refrigerant, a condenser for condensing the refrigerant, and disposed above the compressor, the oil separator and the condenser. An electrical component box provided with a switch panel on the upper surface, and an upper surface plate having a switch panel hole corresponding to the switch panel and covering the upper surface of the electrical component box,
On the upper surface of the electric component box, there is provided a dish-shaped portion surrounding the switch panel, and an extending portion extending to the outside of the electric component box from a cut provided in a part of the dish-shaped portion, A refrigerant recovery device, wherein a flange that overlaps in the height direction of the dish-like portion is formed inside the dish-like portion at a peripheral portion of the switch panel hole of the upper surface plate.