JPH10299680A - Gas compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas compressor which is capable of improving pulsation and dynamic balance during operation of gas and less in frictional loss. SOLUTION: A rotor 14 is supported rotatably on the eccentric shaft 12 of a cylinder 10, an arm 20 formed at one end of the rotor 14 is connected rotatably to the cylinder 10, and a partition member 24 is connected rotatably to the other end of the rotor 14 so as to form two gas compression chambers 28 and 30 in the cylinder 10. Thus the compression and delivery of gas are performed continuously in two gas compression chambers 28 and 30, and a pulsation and dynamic balance during opeartion are improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas compressor used for a room air conditioner and the like, and more particularly to a gas compressor having a plurality of gas compression chambers.

[0002]

2. Description of the Related Art Conventionally, a rotary gas compressor has been known as a gas compressor used for a car air conditioner or the like. FIG. 9 is an explanatory view showing the principle of a conventional rotary gas compressor. In this figure, this rotary type gas compressor mainly comprises a cylinder 1, a rotor 2, an eccentric shaft 3
And a partition plate 4.

[0003] The cylinder 1 is provided with an intake valve 5 and a discharge valve 6. The rotor 2 is supported on the outer circumference of the eccentric shaft 3 and moves while rotating in the cylinder 1 with its rotation, whereby gas is sucked and compressed in the cylinder 1. The tip of a partition plate 4 urged downward by a spring 7 is in sliding contact with the rotor 2, and the partition plate 4 moves up and down according to the rotation of the rotor 2, and together with the rotor 2, one cylinder 1 is provided in the cylinder 1. A gas compression chamber is formed.

FIG. 10 is an explanatory view showing the principle of a conventional swing type gas compressor. The gas compressor shown in the figure is different from the above-described gas compressor in that the gas compressor does not have the partition plate 4. That is, the arm 9 is attached to one end of the rotor 8.
The rotor 2 and the arm 9 form one gas compression chamber in the cylinder 1. According to such a swing type gas compressor, there is an advantage that there is no sliding between the rotor 2 and the partition plate 4, which is a drawback of the gas compressor of FIG. 9, and that no extra power is consumed by friction.

[0005]

However, in the conventional swing-type gas compressor described above, instead of the sliding between the rotor 2 and the partition plate 4, a plurality of gases are used as in a multi-vane type gas compressor. Since the compression chamber cannot be provided, the intake and discharge of gas are intermittent, and there is a disadvantage that gas pulsation and dynamic balance during operation are disadvantageous.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to improve the pulsation of gas and the dynamic balance during operation.
Another object of the present invention is to provide a gas compressor having a small frictional load.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a cylinder having a suction valve and a discharge valve, and an eccentric shaft rotatably supported on an outer periphery of an eccentric shaft in the cylinder. A rotor that sucks and compresses gas by moving in a cylinder by rotation of a shaft, an arm fixed to one side of the rotor, and partitions the inside of the cylinder while following the movement of the rotor in the cylinder; And a partition member that forms two gas compression chambers in the cylinder together with the rotor and the arm while following the movement of the rotor in the cylinder while being swingably connected to the other side of the cylinder. And

Therefore, two compression chambers are formed in the cylinder by the rotor, the arm, and the partition member.
Gas suction and compression can be performed continuously, which is advantageous in gas pulsation and dynamic balance. Further, unlike the vane rotary gas compressor, since there is no friction between the vane and the cylinder, there is no power loss due to a friction load, and there is no wear of parts and durability is improved.

Further, the invention of claim 2 provides a cylinder having a suction valve and a discharge valve, and a gas that is rotatably supported on the outer periphery of an eccentric shaft in the cylinder and moves in the cylinder by rotation of the eccentric shaft. And an arm fixed to the rotor and partitioning the inside of the cylinder while following the movement of the rotor in the cylinder; and an arm that is swingably connected to the rotor and moves the rotor in the cylinder. And two or more partition members forming at least three gas compression chambers in the cylinder together with the rotor and the arm while following the above.

According to a third aspect of the present invention, a cylinder having a suction valve and a discharge valve is rotatably supported on an outer periphery of an eccentric shaft in the cylinder, and is moved in the cylinder by rotation of the eccentric shaft to suck gas. A rotor that performs compression, one end of which is swingably connected to the rotor, and the other end of which is swingably connected to the inside of the cylinder to follow the movement of the rotor in the cylinder, and two or more gases together with the rotor. And two or more partition members forming a compression chamber.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a gas compressor according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory view showing one embodiment of a gas compressor according to the present invention. The gas compressor shown in FIG.
It comprises a cylinder 10 having a substantially cylindrical cross section, an eccentric shaft 12, a rotor 14, and the like.

The cylinder 10 is provided with two intake valves 16 and two discharge valves 18 at the upper and lower portions of the cylinder 10, respectively. The intake of gas into a gas compression chamber formed in the cylinder 10, which will be described later, is performed. , Discharge takes place via these valves. A casing (not shown) is attached around the cylinder 10.

The eccentric shaft 12 is mounted on a side block (not shown) that closes the front and back surfaces of the cylinder 10 and is rotatably supported in the cylinder 10. Eccentric shaft 12
A rotor 14 having a substantially cylindrical section is rotatably supported on the outer periphery of the rotor 14. An arm 20 is provided on one side of the rotor 14 so as to extend therefrom and is provided integrally therewith.
2 is slidably mounted. This allows
The rotor 14 can move while drawing a constant movement trajectory in the cylinder 10.

On the other side of the rotor 14, an arc-shaped mounting portion 15 is formed, into which the arc-shaped portion 24A of the partition member 24 is fitted.
4 is attached to the rotor 14 so as to swing freely. On the other hand, the other end 24B of the partition member 24 is formed in a linear shape, and is attached to a swingable swing member 26 attached to a lower part of the cylinder 10 so as to be slidable up and down. As a result, the interior of the cylinder 10 is partitioned into two gas compression chambers 28 and 30 by the rotor 14, the arm 20, and the partition member 24.

The operation of the gas compressor configured as described above will be described with reference to FIGS. First,
When the eccentric shaft 12 rotates in the direction of arrow A from the state of FIG.
The rotor 14 moves to the state shown in FIG. 2 with the rotation of the eccentric shaft 12, the gas compression chamber 28 expands, and, for example, refrigerant gas is introduced from the intake valve 16 into the gas compression chamber 28. on the other hand,
The volume of the gas compression chamber 30 decreases, the refrigerant gas in the gas compression chamber 30 is compressed, and when the compressed refrigerant gas reaches a certain pressure, discharge starts from the discharge valve 18.

Further, when shifting to the state of FIG. 3, the volume of the gas compression chamber 28 is reduced, and the introduced refrigerant gas is gradually compressed. On the other hand, the volume of the gas compression chamber 30 increases, and refrigerant gas starts to be introduced from the intake valve 16. And FIG.
In this state, the refrigerant gas is discharged from the gas compression chamber 28 through the discharge valve 18 and the gas compression chamber 30
Has a maximum volume and is filled with the refrigerant gas. By repeating such an operation, gas suction and compression are continuously performed in the two gas compression chambers 28 and 30.

During these operations, the upper arm 20 of the rotor 12 slides up and down along the swing member 22 and swings left and right according to the movement of the rotor 12. On the other hand, the partition member 24 at the lower part of the rotor 12 slides up and down along the swing member 26 and swings right and left while following the movement of the rotor 12. For this reason,
Since the rotor 12 and the arm 20, the rotor 12 and the partition member 24, the arm 20, and the swinging members 22 and 26 are in surface contact, the airtightness of the compression chambers 28 and 30 is not a line seal but a surface seal. Become.

As described above, according to the present embodiment, the suction and compression of gas can be performed continuously in the two compression chambers 28 and 30. This is advantageous in gas pulsation and dynamic balance. Further, unlike the vane rotary gas compressor, since there is no friction between the vane and the cylinder, there is no power loss due to a friction load, there is no wear of parts, and the life of the compressor itself can be extended. Furthermore, unlike the vane rotary gas compressor and the multi-vane gas compressor, the seals are not in line contact with each other, and the space between the rotor 14, the arm 20, and the partition member 24 forming the compression chamber is a face seal. Excellent and contributes to improvement of compression efficiency.

In this embodiment, one mounting portion 15 is provided on the rotor 14 and one partition member 24 is mounted on the mounting portion 15. However, the number of mounting portions is increased to cope with this. By increasing the number of partition members 24 as described above, it is possible to increase the number of compression chambers formed in the cylinder.

Next, another embodiment of the gas compression chamber according to the present invention will be described. Note that the same members as those of the above-described gas compressor are denoted by the same reference numerals, and redundant description will be omitted.

FIG. 5 is an explanatory view showing another embodiment of the gas compressor according to the present invention. As shown in the figure, the above-described embodiment is different from the above-described embodiment in that two attachment portions 3
4 and the rotor 32 and the two partition members 36
The difference is that two gas compression chambers 38 and 40 are formed in the cylinder 10. That is, each of the two mounting portions 34 of the rotor 32 has an arc-shaped portion 36A of the partition member 36.
Are inserted, and all the partition members 36 can swing with respect to the rotor 32. A linearly formed other end 36B of the partition member 36 is slidably attached to two swingable swing members 42 attached to the upper and lower portions of the cylinder 10. Thus, the rotor 32 can move in the cylinder 10 while drawing a constant movement locus.

The operation of the gas compressor constructed as described above is almost the same as that of the gas compressor in FIGS. 1 to 4, and as shown in FIGS.
Is rotated in the direction of arrow B, so that operations associated with suction and compression are performed. However, it differs from the gas compressor in FIG. 1 in that the upper partition plate 36 swings and sucks and compresses gas in response to the movement of the rotor 32.

In the gas compressor shown in FIG. 5, two partition plates 36 are attached to the rotor 32, but the number of partition plates can be further increased. For example, when three partition plates are attached, three gas compression chambers are formed in the cylinder 10. According to this, since the number of compression chambers for inhaling and compressing gas increases, it is more advantageous in pulsation and dynamic balance of gas.

[0025]

As described above, according to the present invention,
Since gas suction and compression can be performed continuously in a plurality of compression chambers, it is advantageous in gas pulsation and dynamic balance during operation. Further, the friction during operation can be reduced, and the durability of the compressor can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the principle of an embodiment of a gas compressor according to the present invention.

FIG. 2 is an explanatory view showing the operation of one embodiment of the gas compressor according to the present invention.

FIG. 3 is an explanatory diagram showing an operation of the embodiment of the gas compressor according to the present invention.

FIG. 4 is an explanatory diagram showing the operation of the embodiment of the gas compressor according to the present invention.

FIG. 5 is an explanatory view showing the principle of another embodiment of the gas compressor according to the present invention.

FIG. 6 is an explanatory view showing the operation of another embodiment of the gas compressor according to the present invention.

FIG. 7 is an explanatory view showing the operation of another embodiment of the gas compressor according to the present invention.

FIG. 8 is an explanatory view showing the operation of another embodiment of the gas compressor according to the present invention.

FIG. 9 is an explanatory view showing the principle of a conventional rotary gas compressor.

FIG. 10 is an explanatory view showing the principle of a conventional swing type gas compressor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cylinder 12 Eccentric shaft 14 32 Rotor 15 34 Attachment part 16 Suction valve 18 Discharge valve 20 Arm 22 26 42 Swing member 24 36 Partition member 28 30 38 40 Gas compression chamber

Claims (3)

[Claims] 1. A cylinder having a suction valve and a discharge valve, rotatably supported on an outer periphery of an eccentric shaft in the cylinder,
A rotor that sucks and compresses gas by moving in the cylinder by rotation of the eccentric shaft, an arm fixed to one side of the rotor and partitioning the inside of the cylinder while following the movement of the rotor in the cylinder; A partition member swingably connected to the other side of the rotor and forming two gas compression chambers in the cylinder together with the rotor and the arm while following the movement of the rotor in the cylinder. Gas compressor. 2. A cylinder having a suction valve and a discharge valve, rotatably supported on an outer periphery of an eccentric shaft in the cylinder,
A rotor that sucks and compresses gas by moving in the cylinder by rotation of the eccentric shaft; an arm fixed to the rotor and partitioning the inside of the cylinder while following the movement of the rotor in the cylinder; Two or more partitioning members movably connected and forming at least three gas compression chambers in the cylinder together with the rotor and the arm while following the movement of the rotor in the cylinder. Compressor. 3. A cylinder having a suction valve and a discharge valve, rotatably supported on an outer periphery of an eccentric shaft in the cylinder,
A rotor that sucks and compresses gas by moving in the cylinder by the rotation of the eccentric shaft, one end of which is swingably connected to the rotor, and the other end of which is swingably connected to the inside of the cylinder; 2. A gas compressor comprising: two or more partition members forming two or more gas compression chambers together with the rotor while following the movement of the rotor.