JPS62272064A - Reciprocating type compression-expansion machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Technical Field] The present invention relates to a reciprocating compression/expansion machine used in an air refrigeration cycle air conditioning system or the like.

[Background technology]

The sixth air-conditioning system using an air refrigeration cycle
By driving a compressor 62 with a prime mover 61 such as a motor shown in the figure, the air inside is pressurized and reaches a high temperature. high pressure,
The high-temperature air exchanges heat with outside air in the cooler 63 and is cooled at high pressure to near the outside temperature. At this time, the temperature of the outside air increases, which is used for heating. The air exiting the cooler 63 expands in the expander 65, becomes low pressure and low temperature, and is heat exchanged with outside air in the heater 66, where it is heated to a low pressure and close to the outside temperature. At this time, the temperature of the outside air decreases, so this is used for cooling. The power generated by the expander 65 is the prime mover 61
Power is recovered to. 63a.

66a is a fan. The operating principle of the air refrigeration cycle air conditioning system is as described above.

Compressor 62. Examples of the expander 65 used include a combination of a conventional turbo compressor and an expansion turbine, or a combination of a reciprocating compressor 62 and a reciprocating expander 65 shown in FIG. Compression v! A62 and the expander 65 are driven by a common prime mover 61 such as a motor.

The compressor 62 has a piston 70 disposed within a cylinder 69 having an intake port 67 and an exhaust port 68. The expander 65 has a piston 74 installed inside a cylinder 73 having an intake lower 1 and an exhaust lower 2.

However, in this conventional structure, the compressor 62 and the expander 65 have independent cylinders 69, 73 and pistons 7.
0.74 and has a driving force tjs161,
There are problems in that the installation space is large and the weight is heavy.

[Purpose of the invention]

An object of the present invention is to provide a reciprocating compression/expansion machine that has both the functions of a compressor and an expansion machine, and is compact and lightweight.

[Disclosure of the invention]

The reciprocating compression/expansion machine of the present invention includes a cylinder having both an intake port and an exhaust port at both ends, and a cylinder made of a magnetic material and inserted into the cylinder so as to be able to reciprocate, thereby filling a space within the cylinder. It includes a piston that partitions into a compression chamber and an expansion chamber, and a plurality of coils that are provided around the outer periphery of the cylinder and drive the piston.

According to the structure of the present invention, the heat medium is compressed in the compression chamber of the cylinder and expanded in the expansion chamber, but one cylinder and one piston are used for both compression and expansion, and the piston is located on the outer periphery of the cylinder. Since it is driven by a coil and does not require a prime mover such as a motor, the overall shape is extremely compact and lightweight.

Embodiment An embodiment of the present invention will be described with reference to FIGS. This reciprocating compression/expansion machine has two intake ports at both ends.
．． a cylinder 1 each having both an exhaust port 4.3 and an exhaust port 4.5;
A piston 8 is formed of a magnetic material and is reciprocably inserted into the cylinder 1 to partition the space inside the cylinder 1 into a compression chamber 6 and an expansion chamber 7, and a piston 8 is provided on the outer periphery of the cylinder 1 to drive the piston 8. It is equipped with a plurality of coils 9 and 10.

In this example, there are only two coils 9 and 10, and each coil winding is wound around the outer periphery of the cylinder 1, but it is also possible to divide the coils into multiple pieces in the circumferential direction or the axial direction of the cylinder 1. The intake port 2 and exhaust port 4 of the compression chamber 6 are provided with an intake valve 2a and an exhaust valve 4a, which are check valves that open naturally at a set pressure. The intake valve 3a and exhaust valve 5a provided at the intake port 3 and exhaust port 5 of the expansion chamber 7 each use a solenoid valve, and the position of the piston 8 is detected and the intake valve 3a and the exhaust valve 5a are operated as described in 1. It is connected to a valve control device (not shown) that operates the valve.

FIG. 2 is an explanatory diagram of the configuration of an air refrigeration cycle air conditioning system using this reciprocating compression/expansion machine.

The exhaust port 2 of the compression chamber 6 is connected via a cooler 11 to the intake port 3 of the expansion chamber 7, and the exhaust port 5 of the expansion chamber 7 is connected to the heater 12.
It is connected to the intake port 4 of the compression chamber 6 via piping. The cooler 11 and compressor 12 are equipped with fans 11a and 12a.

Operation The operation of the above configuration will be explained with reference to FIG. In the figure, the coils 9 and 10 are shown in solid lines when they are energized, and by chain lines when they are not energized.

(2) In FIG. 3(A), the coil lO on the right side of the figure is energized, and the piston 8 is located on the right side of the cylinder l. At this time, the compression chamber 6 is filled with air because the intake valve 2a is opened, and the expansion chamber 7 is where the exhaust valve 5a is opened and the expanded low-temperature aerodynamic malt is discharged from the air port 5.

■ Next, energize the left coil 9 and the right coil l.
O is de-energized. As a result, the piston 8 is attracted to the left coil 9 and moves to the left side of the cylinder 1. At this time, since the intake valve 2a and the exhaust valve 4a are closed in the compression chamber 6, the air in the compression chamber 6 is compressed. In the expansion chamber 7, the intake valve 3a is open and the exhaust valve 5a is closed, so compressed air flows into the piston 8 from the intake port 3.
expands as it moves (processes in Figure 3 (A) and (B))
.

■ When the pressures in the compression chamber 6 and expansion chamber 7 become equal, the exhaust valve 4a opens in the compression chamber 6 (the intake valve 2a remains closed), and the piston 8 moves to the left.

The high temperature compressed air coming out of the compression chamber 6 is sent to the cooling air 11 (second
(Fig. 3), the temperature drops to near the outside temperature, and the air moves from the air intake port 3 to the expansion chamber 7 (processes shown in Fig. 3 (B) to (C)).

(2) Next, the intake valve 3a of the expansion chamber 7 is closed and the piston 8 is further moved to the left. The exhaust valve 5a remains closed. At this time, the air is further compressed in the compression chamber 6 and discharged from the exhaust port 4a, and the air expands in the expansion chamber 6 to become low temperature and low pressure (processes shown in FIGS. 3(C) to 3(D)).

■Here, cut off the left coil 9 and cut the right coil IO.
Electricity is applied to move the piston 8 to the right side of the cylinder 1. At this time, in the compression chamber 6, the intake valve 2a opens and air flows in from the intake port 2, and in the expansion chamber 7, the exhaust valve 5a opens.
is opened and low-temperature, low-pressure air is discharged from the exhaust port 5 (processes shown in FIGS. 3(D) to 3(E)).

By repeating the operations (1) to (2) above, air is compressed in the compression chamber 6 and expanded in the expansion chamber 7.

Although it operates in this way, according to this configuration, cylinder 1
and piston 8 are each ill! 1 is used for both compression and expansion, and the piston 8 is connected to a coil 9 on the outer periphery of the cylinder 1.
10 and does not require a driving device such as a motor, the overall shape is extremely compact and lightweight. Therefore, the installation space is small and handling is easy.

FIG. 4 shows another embodiment, in which a recess 8a is provided on the outer peripheral surface of the piston 8', and a magnetic fluid 14 is interposed between the recess 8a and the cylinder 1. With this configuration, while reducing the FJ friction resistance between the piston 8' and the cylinder 1, the sealing between the compression chamber 6 and the expansion chamber 7 can be improved, and efficiency can be improved. The rest is the same as the first embodiment.

FIG. 5 shows yet another embodiment, in which a piston 8' is fixed to the inner surface of the cylinder l, and two elastic sheets 1 are used.
5 and a magnetic fluid 16 sealed between these elastic sheets 15.
It is composed of

The elastic sheet 15 may be simply a flexible sheet.

In this configuration, because of the magnetic fluid 16, the coil 9.10
By turning on and off, the elastic sheet 15 deforms into the state shown by the solid line and the state shown by the chain line in the figure. This deformation causes compression in the compression chamber 6 and expansion in the expansion chamber 7. In this configuration, a compression chamber 6 and an expansion chamber 7 are provided for the seat 15.
is completely sealed, and the FJ friction resistance of the piston 8'' is reduced.

The rest is the same as the first embodiment.

〔Effect of the invention〕

The reciprocating compression/expansion machine of the present invention compresses the heat medium in the compression chamber of the cylinder and expands it in the expansion chamber. One cylinder and one piston are used for both compression and expansion, and the piston is Driven by a coil around the cylinder's outer circumference, it is the source of a motor, etc.! Since no II machine is required, the overall shape is extremely compact and lightweight.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the configuration of an air conditioning system using the reciprocating compression/expansion machine.
FIG. 3 is a diagram explaining its operation, FIG. 4 is a partial sectional view of another embodiment, and FIG. 5 is a partial sectional view of yet another embodiment.
FIG. 6 is an explanatory diagram of the configuration of a conventional heating and cooling system, and FIG. 7 is an explanatory diagram of the configuration of its compressor and expander. 1...Cylinder, 2.3...Intake port, 2a, 3a・
...Intake valve, 4.5...Exhaust port, 4a, 5a...Exhaust valve, 6...Compression chamber, 7...Expansion chamber, 8.8', 8
″... Piston, 9. lO... Coil Fig. 1 Fig. 2 Fig. 3 Fig. fit, 4 Fig. 5 Fig. 7 Procedural master's official document (Volunteer 1. Hanyu's No. 3, person making the correction) Relationship with Hanyu: Applicant 4, Agent 5, Date of amendment order: Nakataka Giren ≠. Figure 3

Claims (1)

[Claims] a cylinder each having both an intake port and an exhaust port at both ends;
a piston formed of a magnetic material and reciprocally inserted into the cylinder to partition the space inside the cylinder into a compression chamber and an expansion chamber; and a plurality of pistons provided on the outer periphery of the cylinder to drive the piston. A reciprocating compression/expansion machine equipped with a coil.