JPH05113256A - Air conditioning device - Google Patents

Abstract

PURPOSE:To provide an air conditioning device which is made compact and uses air as refrigerant. CONSTITUTION:Cylinder blocks 44, 46 are rotatably mounted on both sides of a fixed inclined axis which is bent at a predetermined angle approximately at the center thereof and a work chamber is formed by pistons 60, 62 slidably inserted respectively into a plurality of slide holes formed in the blocks 44, 46. The opposed pistons of both cylinder blocks are connected by a piston rod 68 id parallel with the fixed inclined axis and at least on of the cylinder blocks is rotationally driven to draw air into a work chamber of one of the cylinder blocks and deliver the air from an outlet hole, thereby forming a compressor 90, while an expansion machine 92 wherein the compressed air is drawn into a work chamber of the other cylinder block from an inlet hole and expanded is formed, thereby forming a compression expansion machine. And a heat exchanger 88 for radiating heat is provided in a passage interconnecting the delivery hole of the compressor 90 and the inlet hole of the expansion machine 92.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner using air as a refrigerant.

[0002]

2. Description of the Related Art Conventionally, a general air conditioner uses CFC or ammonia as a refrigerant to perform heat exchange by utilizing latent heat of vaporization of the refrigerant. In this case, the refrigerant is compressed by a compressor. It is configured as a closed cycle in which it is cooled by a heat exchanger, liquefied, vaporized by an expansion valve, and then supplied again to the compressor.

Further, air is used as a refrigerant, the air is compressed by a compressor without utilizing latent heat of vaporization, the air is cooled by a heat exchanger, and thereafter the air is adiabatically expanded by an expander for air conditioning. Some are known (Japanese Patent Laid-Open No. 62-
102061).

[0004]

However, in the case of using CFC, ammonia or the like as such a conventional refrigerant, when these are released into the atmosphere, a serious problem of air pollution occurs. Further, when air is used as the refrigerant, the flow rate of the air inevitably increases, and a compressor and an expander must be provided, which causes a problem that the device becomes large.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above problems and to provide an air conditioner which uses air as a refrigerant and realizes downsizing.

[0006]

In order to achieve such an object, the present invention has the following constitution as a means for solving the problem. That is, cylinder blocks are rotatably mounted on both sides of a fixed oblique shaft whose center is bent at a predetermined angle, and the pistons are reciprocally inserted into a plurality of sliding holes formed in the cylinder block. A chamber is formed and the opposed pistons of the two cylinder blocks are connected by a piston rod parallel to the fixed oblique axis, and at least one of the cylinder blocks is rotationally driven to be a working chamber of one cylinder block. A compressor expander is provided which sucks air and discharges it from a discharge hole, and the working chamber of the other cylinder block is formed as an expander which sucks air compressed from the inlet hole and expands it. That is, the configuration of the air conditioner is characterized in that a heat radiating heat exchanger is provided in a flow path that connects the discharge hole of 1 to the inlet hole of the expander.

[0007]

In the air conditioner having the above structure, when the cylinder block is rotationally driven, the cylinder block is connected by the piston rod so that both cylinder blocks rotate around the fixed oblique shaft.
By this rotation, the piston reciprocates, and in the working chamber on the compressor side, air is sucked and compressed air is discharged from the discharge hole. Then, the compressed air is supplied to the heat radiating heat exchanger to be cooled, and then, is sucked into the working chamber on the expander side through the inlet hole, adiabatically expanded in the working chamber, and the low temperature air is discharged. To do. This low-temperature air is supplied to the room or the like to perform air conditioning.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of an air conditioner which is an embodiment of the present invention. Reference numeral 1 denotes a compression expander, as shown in FIG. 2, which is provided with a fixed oblique shaft 2 which is bent substantially at the center thereof at a predetermined angle, in this embodiment, at an angle of 45 degrees. A large diameter portion 4 is formed substantially in the center of the fixed oblique shaft 2, and shaft portions 6 and 8 are formed on both sides of the large diameter portion 4.

The bearing 1 is attached to both shaft portions 6 and 8.
Rotatably supported rod covers 14 and 16 are mounted face-to-face with each other through 0 and 12, and in this embodiment, eight through holes are formed in the rod covers 14 and 16 on the same circumference. 18 and 20 (only a part of which are shown) are formed at equal intervals.

Following the rod covers 14 and 16,
The mounting hole 22 formed in the center of the cylinder portion 26, 28,
Both shaft portions 6 and 8 are rotatably inserted and mounted in a cylinder 24, and in the cylinder portions 26 and 28, eight sliding holes are concentrically provided with the through holes 18 and 20, respectively. Three
0, 32 (only part of which is shown) are formed. The sliding holes 30 and 32 have different diameters. In this embodiment, the left sliding hole 30 has a large diameter and the right sliding hole 32 has a small diameter, as shown in FIG. ing.

Then, the rod covers 14, so that the sliding holes 30, 32 and the mounting holes 22, 24 communicate with each other.
Communication grooves 34 and 36 are formed on the end surface on the side opposite to 16. Further, head covers 38, 40 rotatably supported by bearings 37a, 37b are mounted on the shafts 6, 8 side by side with the cylinders 26, 28. A belt groove 42 is formed on the outer circumference of the one head cover 38.

In the present embodiment, both rod covers 1
4, 16, both cylinder parts 26, 28, both head covers 3
8 and 40 are integrated by a tie rod (not shown) to form both cylinder blocks 44 and 46. Collars 48 and 50 are mounted on the shaft portions 6 and 8, leg members 52 and 54 are mounted on the shaft portions 6 and 8, and they are fixed to the shaft portions 6 and 8 by bolts 56 and 58. The leg members 52 and 54 are fixed to a fixed base (not shown).

On the other hand, a large piston 60 and a small piston 62 are slidably inserted into the sliding holes 30 and 32, respectively, and one of the cylinder portion 26 and the head cover 3 is inserted.
8. A compression action chamber 64 is formed surrounded by the large piston 60. Further, the expansion action chamber 66 is formed by being surrounded by the other cylinder portion 28, the head cover 40, and the small piston 62.

In addition, one large piston 60 and one small piston 62 which are inserted into the cylinder portions 26, 28 and are opposed to each other are parallel to the fixed oblique shaft 2, that is, substantially in the center thereof. Piston rod 6 bent at a predetermined angle
Rotatably at both ends of 8 and retaining rings 70, 72
It is locked by and is connected.

Further, a suction hole 74 and a discharge hole 76 are formed at the end of the fixed oblique shaft 2 on the compression action chamber 64 side, and an inlet hole 78 and an outlet hole 80 are formed at the end of the fixed oblique shaft 2 on the expansion action chamber 66 side. ing. As shown in FIG. 3, the suction hole 74 is formed to the depth of the communication groove 34 in the axial direction of the shaft portion 6, and
The large piston 60 is formed to communicate with the compression chamber 64 via the communication groove 36 until the large piston 60 passes through the top dead center TDC and reaches the bottom dead center BDC by the rotation of the cylinder block 44. The discharge hole 76 is formed so as to communicate with the compression action chamber 64 via the communication groove 34 immediately before the large piston 60 reaches the top dead center TDC.

Further, the inlet hole 78 is, as shown in FIG.
Immediately after passing through the top dead center TDC, it is formed so as to communicate with the expansion action chamber 66 via the communication groove 36. And
The outlet hole 80 is formed so as to communicate with the expansion action chamber 66 via the communication groove 36 until the small piston 62 passes through the bottom dead center BDC and reaches the top dead center TDC.

On the other hand, in this embodiment, a belt 85 is hung between the belt groove 42 of the head cover 38 and a pulley 84 which is rotationally driven by the engine 82 via an electromagnetic clutch (not shown). Further, in the suction hole 74,
The outside air is sucked in, and the discharge hole 76 is connected to the inlet side of the heat radiating heat exchanger 88 having the fan 87. The outlet side of the heat radiating heat exchanger 88 has an inlet hole. It is connected to 78. Thereby, a flow path is formed so that the air discharged from the discharge hole 76 is supplied to the inlet hole 78 via the heat dissipation heat exchanger 88. Also,
The outlet hole 80 communicates with the vehicle interior through a duct or the like (not shown).

In this embodiment, the compressor 90 is constituted by the one shaft portion 6, the cylinder block 44 and the piston rod 68.
The other shaft portion 8, the cylinder block 46, and the piston rod 68 configure an expander 92, and the compressor 90 and the expander 92 configure the compression expander 1.

Next, the operation of the air conditioner of this embodiment will be described. First, when the engine 82 is rotationally driven, the pulley 84 is rotated via an electromagnetic clutch (not shown). The rotation of the pulley 84 is transmitted to the head cover 38 via the belt 85, the cylinder block 44 is rotated around the fixed oblique shaft 2, and the other cylinder block 46 is also rotated by the piston rod 68 into one cylinder. The rotation of the block 44 is transmitted and rotated around the fixed oblique shaft 2.

Fixed oblique shaft 2 of one cylinder block 44
The piston rod 68 is fixed by the rotation around the
The large piston 60 is rotated around the
It slides in 0. Therefore, the compression action chamber 64 repeatedly expands and contracts, and expands until the large piston 60 reaches the bottom dead center BDC from the state where the large piston 60 is at the top dead center TDC.
As shown in, the compression action chamber 64 communicates with the suction hole 74 via the communication groove 34 and sucks air.

When the bottom dead center BDC is reached, the communication groove 34 is
It is closed by the shaft portion 6 of the fixed oblique shaft 2. Then, the compression action chamber 64 contracts until the top dead center TDC is reached from the bottom dead center BDC, and the air in the compression action chamber 64 is compressed, whereby the internal air temperature rises. continue,
Immediately before the compression action chamber 64 reaches the top dead center TDC, the compression action chamber 64 communicates with the discharge hole 76 via the communication groove 34, and the compressed air is discharged from the discharge hole 76.

Further, by the compression in the compression action chamber 64,
The air temperature rises, but by determining the compression ratio so that the rise temperature exceeds 60 to 80 ° C., it is possible to kill bacteria in the air. The compressed air discharged from the discharge holes 76 is supplied to the heat radiating heat exchanger 88, where heat is exchanged with the air in the atmosphere to be cooled. The cooled compressed air is supplied to the inlet hole 78.

The other cylinder block 46 is the fixed oblique shaft 2.
The small piston 62 also slides in the sliding hole 32 by being rotated about the direction of, and the expansion action chamber 66 repeats expansion and contraction. Immediately after the small piston 62 passes through the top dead center TDC, the expansion action chamber 66 passes through the communication groove 36 and the inlet hole 78.
The compressed air is sucked into the expansion action chamber 66.

Until the small piston 62 reaches the bottom dead center BDC, the communication groove 36 is blocked by the shaft portion 8 of the fixed oblique shaft 2, and the compressed air expands in the expanding expansion chamber 66. The air temperature in the expansion action chamber 66 decreases. At this time, due to the action of the compressed air, an action force is generated that pushes down the small piston 62 and assists in rotating the cylinder block 46 around the fixed oblique shaft 2.

When the small piston 62 passes through the bottom dead center BDC, the communicating groove 36 communicates with the outlet hole 80 until the top dead center TDC is reached, and the cooling air in the expansion action chamber 66 is discharged from the outlet hole 80. It is supplied to the vehicle interior to cool the vehicle interior.
As described above, according to the air conditioner of the present embodiment, since the compression expander 1 including the compressor 90 and the expander 92 on both sides of the fixed oblique shaft 2 is used, the compressor 90 and the expander 92 are not provided. It can be arranged compactly, and the compressor 90 and the expander 92 can be simply rotated by driving one cylinder block 44.
Since and are driven, the device is downsized. Further, since a large number of working chambers 64, 66 can be arranged around the fixed oblique shaft 2, the air flow rate can be increased, and since air is used as the refrigerant, problems such as air pollution due to discharge of the refrigerant can be caused. Does not occur.

Moreover, the temperature rise of the compressed air can also serve as sterilization in the air, and the cooling air supplied into the room from the outlet hole 80 can be made aseptic. It can also be applied as is to the cooling of. Further, in the expander 92, an action force for rotating the cylinder block 46 is generated by the action of the supplied compressed air, and assists the rotation by the engine 82.

The number of pistons is not limited to eight, and may be determined as needed. The number of pistons is not limited to vehicles and can be similarly applied to indoor cooling of buildings. The present invention is not limited to the embodiments as described above, and can be implemented in various modes without departing from the gist of the present invention.

[0028]

As described above in detail, since the air conditioner of the present invention uses the compression expander having the compressor and the expander on both sides of the fixed oblique shaft, the compressor and the expander are compact. The device can be miniaturized. Further, since a large number of working chambers can be arranged around the fixed oblique axis, the air flow rate can be increased, and since air is used as the refrigerant, problems such as air pollution due to discharge of the refrigerant do not occur. Produce an effect.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an air conditioner as an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the compression expander of this embodiment.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

1 ... Compression expander 2 ... Fixed oblique shaft 44,
46 ... Cylinder block 60 ... Large piston 62 ... Small piston 64 ...
Compression action chamber 66 ... Expansion action chamber 88 ... Heat dissipation heat exchanger 90 ...
Compressor 92 ... Expander

Claims (1)

[Claims] 1. A cylinder block is rotatably mounted on both sides of a fixed oblique shaft whose center is bent at a predetermined angle, and is reciprocally inserted into a plurality of sliding holes formed in the cylinder block. A working chamber is formed by a piston, and the opposed pistons of both cylinder blocks are connected by a piston rod parallel to the fixed oblique axis,
Further, at least one of the cylinder blocks is rotationally driven to be a compressor that sucks air into the working chamber of one cylinder block and discharges it from the discharge hole, and the air compressed into the working chamber of the other cylinder block from the inlet hole. A heat exchanger for radiating heat is provided in the flow path connecting the discharge hole on the compressor side and the inlet hole on the expander side. A characteristic air conditioner.