JP2008064371A - Refrigerant recovery device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a space-saving refrigerant recovery device capable of efficiently recovering a refrigerant and freezer oil containing a refrigerant from a freezing cycle component apparatus such as a compressor. <P>SOLUTION: The refrigerant recovery device recovering a refrigerant or freezer oil containing a refrigerant from the freezing cycle component apparatus such as the compressor 4 is provided with a base body 3, a locking member 5 protruded from the base body for locking the freezing cycle component apparatus rotationally, and position correction members 6 arranged removably in the different positions in the face direction of the base body for engaging with the freezing cycle component apparatus to allow restriction on a turning angle of the freezing cycle component apparatus. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refrigerant recovery apparatus that can be preferably used for disposal of, for example, a refrigerator, an air conditioner, and the like using a refrigeration cycle.

  The recycling (regeneration processing) technology for waste home appliances has been studied. For example, in a recycling plant that disassembles a used refrigerator and sorts and collects materials, it is necessary to collect the refrigerant in order to prevent the refrigerant (for example, chlorofluorocarbon) from being released into the atmosphere. For example, Japanese Patent Application Laid-Open No. 2004-251539 (Patent Document 1) supports a refrigerator or the like on a refrigerant work table and tilts the refrigerator to give vibration, thereby refrigeration including refrigerant and refrigerant from refrigerant pipes and compressors. A method for recovering machine oil is disclosed. Japanese Patent Laid-Open No. 2003-83645 (Patent Document 2) discloses a method of making a hole in a bottom surface of a compressor separated and recovered from, for example, a refrigerator, and recovering refrigerant or refrigerating machine oil containing refrigerant through a seal member. Is disclosed.

Japanese Patent Laid-Open No. 2004-251539 (first term, FIG. 2) Japanese Patent Laid-Open No. 2003-83645 (term 3, FIG. 3)

In the refrigerant recovery apparatus such as the above-mentioned conventional Patent Document 1, since the entire refrigerator is inclined, the compressor may not always be kept in an optimal posture for refrigerant recovery including refrigeration oil, so that sufficient refrigerant recovery is difficult, Moreover, there existed a subject that the processing work to lay down, the transfer work to a work table, and the huge space for temporary storage between processes were required.
Further, in the method of recovering the refrigerant from the bottom portion of the compressor installed upward as in Patent Document 2, there is a problem that sufficient refrigerating machine oil cannot be recovered although it is not necessary to incline the entire refrigerator. It was.

  This invention was made in order to solve the above-described problems of the prior art, and efficiently collects refrigerant and refrigerant oil containing refrigerant to be collected from refrigeration cycle components such as a compressor in a space-saving manner. It aims at providing the refrigerant | coolant collection | recovery apparatus which can do.

  The refrigerant recovery apparatus according to the present invention is a refrigerant recovery apparatus for recovering refrigerant or refrigeration oil containing refrigerant from refrigeration cycle components, and a base and the refrigeration cycle components provided on the base are rotatably locked. And a position correcting member that can be engaged and disengaged at different positions in the surface direction of the base body and that can limit the rotation angle of the refrigeration cycle constituent device by engaging with the refrigeration cycle constituent device. Is provided.

  According to the present invention, the position correction member that restricts the rotation position so that the refrigerant recovery portion of the refrigeration cycle component device that is rotatably locked by the locking member is substantially at the lowest position, is provided in the surface direction of the base. By disengaging at different positions, it is possible to eliminate the accumulation of refrigeration oil in refrigeration cycle components such as compressors, and to efficiently collect refrigerant or refrigerant oil containing refrigerant in a short time. . Moreover, since the refrigeration cycle component equipment removed from the refrigeration cycle equipment is targeted, it is space-saving and excellent in workability.

Embodiment 1 FIG.
1A and 1B are diagrams showing a locking stand portion of a refrigeration cycle component device that is a refrigerant recovery apparatus according to Embodiment 1 of the present invention, where FIG. 1A is a front view and FIG. 1B is a side view. In the drawing, the locking stand portion 1 of the refrigeration cycle component device includes a base 3 constituting a back plate standing on a gantry 2 and an upper front surface of the base 3 (left direction in FIG. 1B). In order to lock the compressor 4 as a refrigeration cycle component device so as to be rotatable, a locking member 5 made of a fixed bar standing slightly upward, and a compressor 4 locked to the locking member 5 are provided. And a position correcting member 6 including a position fixing rod for limiting the rotation angle so that the refrigerant pipe 41 as the refrigerant recovery portion is substantially at the lowest position. The base 3 has a frame 31 formed in a rectangular frame shape, and two punching metals 32 of the same size fixed to the frame 31 so as to be spaced apart from each other so as to close an opening (not shown) of the frame 31. It consists of 33.

  The position correcting member 6 is formed in a size that allows insertion of the locking holes 32a and 33a formed of a large number of through holes provided in the punching metals 32 and 33, and can be engaged and disengaged at different positions in the surface direction of the base 3. Is provided. In the first embodiment, by using the four fixing holes 42 a for fixing provided in the mounting legs 42 of the compressor 4, the locking member is attached to the mounting hole 42 a on the side far from the refrigerant pipe 41 of the compressor 4. By inserting 5, the compressor 4 is locked with respect to the base 3 so as to be rotatable. And the rotation angle of the compressor 4 is determined so that the refrigerant | coolant piping 41 may become a substantially lowermost position. Then, after the position correction member 6 is inserted through the lower mounting hole 42a among the remaining three mounting holes 42a, the locking holes 32a and 33a of the punching metals 32 and 33 near the mounting hole 42a are inserted into FIG. As shown in b), the rotation angle is limited by sequentially passing through the position correcting member 6 in the horizontal direction, and the posture of the compressor 4 is maintained.

  A tray-like base plate 21 is provided on the upper surface of the gantry 2 as a receptacle when refrigeration oil (not shown) leaks. The compressor 4 as the refrigeration cycle component device is disassembled and removed by a known means from a refrigeration cycle device such as a refrigerator or an air conditioner so that the refrigerant does not leak to the outside. It is not limited to a compressor, and may be another refrigeration cycle constituent device that constitutes a refrigeration cycle device such as an accumulator, for example. Further, although equipment and piping for recovering refrigerant or refrigerating machine oil containing refrigerant from the compressor 4 locked to the locking stand 1 are not shown, for example, connection means, on-off valves, pressure gauges, A well-known thing provided with a suction means, a storage tank, etc. can be used without a special restriction | limiting.

  Next, the operation of the first embodiment configured as described above will be described. Since the compressor 4 including the refrigerant removed from the refrigerator or the like and the refrigerating machine oil containing the refrigerant is usually provided with three to five refrigerant pipes, any one of them, for example, the refrigerant pipe 41 used for refrigerant filling. , The posture of the compressor 4 is determined so that the refrigerant pipe 41 can be positioned at the lowermost end, and the mounting hole 42a of the mounting leg portion 42 of the compressor 4 positioned above in the posture is the base. 3 is suspended through a locking member 5 formed of a fixed bar. Next, the posture is corrected by appropriately rotating the compressor 4 around the locking member 5 clockwise or counterclockwise so that the refrigerant pipe 41 which is a recovery part becomes the lowermost end. While maintaining that state, the position correcting member 6 is passed through the other mounting hole 42a of the mounting leg 42 of the compressor 4 positioned below, and then sequentially inserted into the locking holes 32a and 33a of the punching metal 32 and 33. Insert and hold the attitude of the compressor 4. Note that the front end portion (the left side portion in FIG. 1B) of the front side of the position correcting member 6 is processed into, for example, a ring shape so as to be easily gripped.

  Thereafter, the refrigerant recovery pipe is connected to the refrigerant pipe 41 via known connection means (both not shown), and the refrigerant oil including the refrigerant and the refrigerant is recovered from the compressor 4. At this time, since the refrigerant pipe 41 is located at the lowermost part, substantially all of the refrigerant and the refrigerating machine oil remaining in the compressor 4 are easily collected in a storage tank (not shown). The position correcting member 6 is locked horizontally if it passes straight through the locking holes 32a, 33a of the two punching metals 32, 33 arranged at intervals, and if it passes diagonally, it can be either up, down, left or right. Since it can be tilted in the direction and locked, the rotation angle of the compressor 4 can be finely adjusted. Note that the rotation angle of the compressor 4 is limited by engaging the position correction member 6 with its own weight, and the posture in which the refrigerant pipe 41 is positioned at the lowest position is reliably maintained.

  As described above, according to the first embodiment, the compressor 4 that is a refrigeration cycle component device is pivotally locked by the locking member 5, and the refrigerant piping 41 of the compressor 4 is substantially closed by the position correction member 6. By restricting the rotation angle so as to be at the lowest position, the refrigerating machine oil remaining in the compressor 4 can be eliminated and the refrigerating machine oil can be efficiently recovered in a short time. Moreover, since the compressor 4 taken out from the refrigeration cycle equipment is rotated, the space-saving operation can be performed with a small force, and the workability is excellent. Further, since the punching metals 32 and 33 having a large number of through holes are used, the insertion position of the position correction member 6 can be almost arbitrarily selected, and the refrigerant pipe which is a refrigerant recovery part provided in the compressor 4 The posture of the compressor 4 can be easily corrected and held so that the refrigerant pipe 41 is positioned at the lowermost end without being affected by the orientation of the compressor 41 and the model of the compressor 4.

  In addition, although the said locking member 5 was formed with the linear fixing bar and stood up slightly upwards on the flame | frame 30, it is not limited to a rod-shaped thing in particular. In short, it is only necessary that the compressor 4 can be pivotably locked. For example, the same effect can be obtained even if the compressor 4 is prevented from slipping down using a bent rod member or the like. Further, when the compressor 4 does not have the mounting leg portion 42 or the appropriate mounting hole 42a, the compressor 4 can be pivotally locked to the locking member 5 through a wire or the like, for example.

Embodiment 2. FIG.
FIG. 2 is a system diagram showing the main part of the refrigerant recovery apparatus according to Embodiment 2 of the present invention. In the figure, the recovery unit 7 constituting the refrigerant recovery device locks the refrigerant removed from the plurality of refrigerators and the plurality of compressors 4 (4A, 4B, 4C) in which the refrigeration oil containing the refrigerant remains, and simultaneously Alternatively, a plurality of refrigerants extending in the vertical direction that are provided in association with a locking stand (not shown) configured so as to be connected / recovered sequentially and that constitute connection means for the compressor 4. A recovery pipe 71, a first on-off valve 72 and a second on-off valve 73 interposed in series with each refrigerant recovery pipe 71, and refrigerant recovery between the first and second on-off valves 72, 73 Pressure sensor 74 provided in each piping 71, display means 75 as a notification device for displaying information corresponding to the detection result of the pressure sensor 74, and a common refrigeration provided in the lower part of each refrigerant recovery pipe 71 Machine oil Distillate tank 76, a refrigerant recovery unit 78 which is connected through a pipe 77 to the refrigerating machine oil storage tank 76.

  The refrigerant recovery unit 78 includes a vacuum pump that exhausts the air in the system, a refrigerant separation unit that separates the refrigerant and the refrigeration oil contained in the refrigerant, a refrigerant compressor that compresses and liquefies the separated refrigerant, and liquefied Although a recovery refrigerant storage tank for storing the refrigerant is provided, all of them are not shown. Moreover, the pressure sensor 74 provided in each refrigerant | coolant collection | recovery piping 71 is for detecting the refrigerating machine oil collection | recovery condition from each compressor 4 (4A, 4B, 4C). The display means 75 as a notification device includes a display device such as an LCD or a PD that displays the pressure detected by the pressure sensor 74, and a detection lamp such as an LED that notifies the end of removal when the detection result falls below a predetermined value. And a control circuit (both not shown), and the operator can easily visually recognize the end of the extraction of the refrigerant including the refrigerating machine oil. In addition to or instead of the detection lamp, a means for notifying by sound or vibration may be used.

  In the second embodiment configured as described above, the first on-off valve 72 is closed, the second on-off valve 73 is opened, and the system is evacuated by a vacuum pump (not shown). A plurality of compressors 4 (4A, 4B, 4C) removed from the refrigerator or the like are connected to the respective refrigerant recovery pipes 71, the second on-off valve 73 is closed, and then the first on-off valve 72 is opened for compression. The inside of the machine 4 communicates with the pressure sensor 74 part, and the refrigerant pressure in the compressor 4 is detected by the pressure sensor 74 to check for refrigerant leakage. Next, when the second on-off valve 73 is opened, the refrigerant in the compressor 4 and the refrigerating machine oil including the refrigerant flow down to the refrigerating machine oil storage tank 76 through the refrigerant recovery pipe 71, and most of the refrigerating machine oil is stored in the refrigerating machine oil. It is stored in the tank 76.

  The refrigerant flows into the refrigerant recovery section 78 and is separated from the refrigeration oil by the refrigerant separation means (not shown), the refrigeration oil returns to the refrigeration oil storage tank 76, and the refrigerant is liquefied by the refrigerant compressor (not shown). And stored in a recovered refrigerant storage tank (not shown). When the refrigerant containing the refrigerating machine oil in the compressor 4 is completely extracted, the pressure sensor 74 detects the end of extraction and notifies the display means 75 so that the state of refrigerant recovery and the end of the extraction are determined. Compared to the conventional method of checking from the window, the operator can reliably monitor the recovery status and determine the end of removal. In addition, in the conventional method, the amount of collection and the judgment of the end of extraction tend to vary from worker to worker, and the scale of a general pressure gauge is coarser below atmospheric pressure, making it more difficult to determine the end of removal. There was a problem. In addition, the compressor 4 closes the first on-off valve 72 provided in each refrigerant recovery pipe 71 and sequentially replaces it with another compressor, so that the recovery operation can be performed efficiently without taking unnecessary processing time. Can proceed.

  The set pressure for detecting the end of refrigerating machine oil extraction by the pressure sensor 74 is not particularly limited. However, as a result of intensive studies by the present inventors, the set pressure is a relative pressure to the atmospheric pressure. And about -60 KPa to about -80 KPa. When the set pressure is higher than −60 KPa, the refrigerant is somewhat insufficiently recovered. When the set pressure is lower than −80 KPa, useless suction is continued even though the recovery has already been substantially completed. Therefore, when the pressure is within the set pressure range, it is preferable because the recovery work efficiency can be improved while securing a sufficient recovery amount. Although FIG. 2 shows a device capable of locking the three compressors 4A, 4B, and 4C, it goes without saying that the number of compressors can be further increased as necessary. In addition, an electromagnetic valve can be used as the first and second on-off valves 72 and 73, and the recovery process can be automatically performed.

Embodiment 3 FIG.
3A and 3B are views showing a locking stand portion of a refrigeration cycle component device that is a refrigerant recovery apparatus according to Embodiment 3 of the present invention, where FIG. 3A is a front view and FIG. 3B is a side view. The third embodiment shows an example in which a plurality of compressors (not shown) can be locked to the locking stand portion 10. In the figure, a base 30 includes a frame 31 formed in a substantially “day” shape when viewed from the front side, and punching metals 32A and 32B provided so as to be vertically divided so as to close the front opening of the frame 31. The punching metal 33 is provided so as to block the rear opening of the frame 31 and to have the through holes substantially coincide with the through holes of the punching metals 32A and 32B on the front side.

In addition, the upper frame of the frame 31 is composed of fixed bars that are spaced apart from each other and are erected slightly upward so that a plurality of refrigeration cycle components such as a compressor (not shown) can be rotated. Locking members 5A and 5B and a locking member 5C made up of similar fixing bars arranged at the left and right central portions of the central frame of the frame 31 are erected slightly upward. Since other configurations are the same as those of the first embodiment, description thereof is omitted.
According to the third embodiment configured as described above, since a large number of refrigeration cycle components such as compressors can be held by one locking stand unit 10, the apparatus can be saved in space. In addition, the recovery operation can be performed more efficiently.

Embodiment 4 FIG.
FIG. 4 is a front view showing a locking stand portion of a refrigeration cycle component device that is a refrigerant recovery apparatus according to Embodiment 4 of the present invention. In the fourth embodiment, the position correcting member 6 that holds the rotational position of the compressor 4 is illustrated as being inserted into the mounting hole 42a of the mounting leg 42 of the compressor 4 in the first embodiment. On the other hand, another holding means is shown. That is, in FIG. 4, the compressor 4 that is rotatably locked to the locking member 5 moves the compressor 4 around the locking member 5 in the clockwise direction or the counterclockwise direction so that the refrigerant recovery portion becomes the lowest end. The punching metals 32 and 33 are adjusted so that the position of the position correcting member 6 is positioned at the corner formed by the casing 43 and the mounting leg portion 42 of the compressor 4. Are inserted into the locking holes 32a and 33a to maintain the posture. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In the fourth embodiment configured as described above, the same effect as that of the first embodiment can be obtained, and when the mounting leg portion 42 does not have an appropriate mounting hole, or even if there is a mounting hole, the recovery site is Even when there is no mounting hole at the position that is the lowermost end, the effect that the posture of the compressor 4 can be maintained without problems is obtained.

  In the description of each of the above embodiments, a rod-shaped material is used as the position correction member 6, and the position correction member is utilized by using the locking holes 32 a and 33 a of the two punching metals 32 and 33 constituting the base 3. Although what illustrated the thing comprised so that 6 might be latched in arbitrary positions was illustrated, it is not necessarily limited to these combinations. For example, a thick plate material is used as the base 1 and a number of locking holes through which the position correction member 6 can be inserted are provided, or a steel plate is used as the base 1, and the position correction member 6 is attached to the base by the magnet's attracting force. It may be configured to be able to be locked at an arbitrary position on one surface.

It is a figure which shows the latching stand part of the refrigerating-cycle structure apparatus which is a refrigerant | coolant collection | recovery apparatus by Embodiment 1 of this invention, (a) is a front view, (b) is a side view. The systematic diagram which shows the principal part of the refrigerant | coolant collection | recovery apparatus by Embodiment 2 of this invention. It is a figure which shows the latching stand part of the refrigerating-cycle structure apparatus which is a refrigerant | coolant collection | recovery apparatus by Embodiment 3 of this invention, (a) is a front view, (b) is a side view. The front view which shows the latching stand part of the refrigerating-cycle structure apparatus which is a refrigerant | coolant collection | recovery apparatus by Embodiment 4 of this invention.

Explanation of symbols

  1, 10 Locking stand part, 2 Mounting base, 21 Base plate, 3, 30 Base body, 32a, 33a Locking hole, 31 Frame, 32, 32A, 32B, 33 Punching metal, 4 (4A, 4B, 4C) Compressor (Refrigeration cycle component equipment), 41 refrigerant pipe (refrigerant recovery part), 42 mounting leg part, 42a mounting hole, 43 casing, 5, 5A, 5B, 5C locking member, 6 position correcting member, 7 recovery part, 71 refrigerant Pipe for collection, 72 1st on-off valve, 73 2nd on-off valve, 74 pressure sensor, 75 display means (notification device), 76 refrigerator oil storage tank, 77 pipe, 78 refrigerant recovery section.

Claims (7)

  In a refrigerant recovery apparatus for recovering refrigerant or refrigeration machine oil containing refrigerant from a refrigeration cycle component device, a base, a locking member for rotatably locking the refrigeration cycle component device provided on the base, And a position correcting member that is detachably provided at different positions in the surface direction and that can limit the rotation angle of the refrigeration cycle component device by engaging with the refrigeration cycle component device. Refrigerant recovery device.   The refrigerant recovery apparatus according to claim 1, wherein the base has a plurality of locking holes into which the position correction member can be inserted.   3. The refrigerant according to claim 2, wherein the base body includes two punching metals having a large number of through-holes spaced apart from each other in the front-rear direction, and the through-holes serve as the locking holes. Recovery device.   The refrigerant recovery apparatus according to claim 2 or 3, wherein the position correction member includes a position fixing rod that can be inserted into the locking hole.   Refrigerant recovery pipe for connection to the refrigeration cycle component device, a pressure sensor for detecting the refrigerant pressure provided in the refrigerant recovery pipe, and a notification device for informing the end of refrigerant recovery based on the detection result of the pressure sensor The refrigerant recovery device according to any one of claims 1 to 4, wherein the refrigerant recovery device is provided.   6. The refrigerant recovery apparatus according to claim 5, wherein the end of the refrigerant recovery is notified when the detected pressure of the pressure sensor is about −60 KPa to about −80 KPa with respect to atmospheric pressure.   The refrigerant recovery apparatus according to claim 1, wherein the locking member includes at least one fixing bar fixed to the base body.

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