JPS58150086A - Opposed swash plate system compressor - Google Patents

Abstract

PURPOSE:To improve the efficiency of compression by providing an intake hole in an opposed cylinder wall between the lowermost portion of a slant surface of a piston piece and a portion of same spaced about 90 deg. therefrom to make timing for ensuring intake amount of gas. CONSTITUTION:An intake hole 18 is positioned in the range from a position S opposed to the lowermost slant portion 14a of second slant surface 14 of a piston piece 10 to a position T spaced about 90 deg. therefrom in the reverse rotational direction of a piston carrier 9. Thus, timing to ensure sufficient intake amount of compressed gas into a cylinder chamber 8a is made so that the intake hole 18 is opened in the range centering about the position T to suck efficiently the compressed gas.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a completely new opposed swash plate compressor, either reciprocating or rotary, which eliminates the need for suction and discharge valves.

[Technical background of the invention and its problems]

For example, in the case of a reciprocating electric compressor, cylinder/
111 is provided with a suction valve and a discharge valve, which are opened and closed by the reciprocating motion of the male cylinder O, and are designed to control the suction and discharge of compressed gas into the cylinder chamber.

Since all of the above six valves also serve as valve plates, it is impossible to accurately follow the movement of the piston, resulting in a slight delay.

This delay appears as overcompression and overexpansion of the compressed gas, resulting in a decrease in volumetric efficiency. When used for a long period of time, six valves are at risk of being damaged due to metal fatigue, which is the biggest cause of failure.

Note that although a scroll type compressor or a screw type compressor, which is a type of four-cree type electric compressor, does not require a valve, the internal structure is complicated and the manufacturing cost is K11.

However, for example, Japanese Unexamined Utility Model Publication No. 47-3307, Publication No. 19806 of the Japanese Utility Model, and Japanese Unexamined Utility Model Publication No. 49-973.
Publication No. 13 and the like discloses a structure in which a suction valve is not required in the Regisolo type 4. Jikko 53-34
No. 52 discloses a structure that eliminates the need for a suction valve and a discharge valve. Further, Japanese Utility Model Publication No. 50-41524 discloses a structure that eliminates the need for a discharge valve in the rotary type K.

According to these publications, at least one valve becomes unnecessary, but the basic structure of either the reciprocating type or the rotary type remains unchanged, so the compression conditions are affected by the modification. In particular, grooves and holes used in place of discharge valves have the same effect as g and f clearances, and the compression efficiency decreases.

In addition, as a completely different compressor structure from the conventional compressor structure, for example, as seen in Japanese Patent Application Laid-Open No. 53-143016, a rotating disk and a non-rotating disk pressed by a spring are housed in the casing. There is a structure for sucking and compressing the gas to be compressed between these parts. In this case, it is a new compression method,
The mating surfaces of each disc must be tooth-shaped to ensure complete contact, which is very laborious to process, and requires a large amount of work as there are many busy contact areas, which tend to wear each other out. In addition, a plurality of suction holes and discharge holes for guiding the compressed gas between each disk are provided through each disk and communicated with the recesses of each mating surface, but there are six holes that communicate with each other. There is a difference in the amount of gas to be compressed, and it is 1! due to effective compression! ! All that's left to do is admit it. Furthermore, in order to increase the amount of compression, K must lengthen the stroke of the non-rotating disk, but this is only possible by increasing the depth of the tooth profile.
Workability becomes even worse.

[Purpose of the invention]

The present invention aims to provide an opposed swash plate compressor that eliminates the need for suction and discharge valves and improves compression efficiency with a very simple configuration and smooth operation that enables suction without loss of efficiency. It is something to do.

[Summary of the invention]

The present invention provides a piston body housed in a cylinder chamber, comprising a piston receiver having a sloped end surface and driven to rotate, and a piston element having a sloped end surface and elastically suppressed and reciprocating. The above-mentioned suction hole is bored in the cylinder l wall facing the gap from the lowest part of the slope of the piston element to approximately 90' in the counter-rotational direction of the piston receiver.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is a casing, the inside of which is partitioned into upper and lower parts by a frame 2. A piezoelectric motor section 3 is provided in the lower part of the frame 2, and a compressor part 4 is provided in the upper part. The electric contact portion 3 includes a shaft 5 that is pivotally supported by a bearing portion 2a that is integrally provided on the frame 2, and this shaft! It is composed of a rotor 6 that is fitted into the rotor 6 and a stator 1 that is disposed with a narrow gap between the outer peripheral surface of the rotor 6 and the stator 1. The compressor section 4 includes a cylinder 8 disposed on the upper surface of the frame 2;
The piston body P includes a piston receiver 9 housed in a cylinder chamber 81 inside the cylinder 1 and a piston element 10 . That is, the piston receiver 9 is integrally provided at the upper end of the shaft 5, and the upper end surface, which may be freely rotatable, is formed with a first slope 11 inclined at a predetermined angle. Further, the piston element 10 is a piston receiver 9.
A spring 13 is interposed between the fin and the end surface of the cylinder chamber 8a. Therefore, the piston element 1o is elastically pressed to remain in contact with the piston receiver 9. The lower end surface of the piston element 1o is the first slope 11
A second slope 14 is formed which slopes at the same angle as the second slope 14 . A pair of guide grooves 115.11 are provided at the upper end of the cylinder 8 to guide the keys 7F and IF7 fixed to the shaft 16 of the piston element IO.

That is, the piston element 1o is movable in the vertical direction.

A suction hole 18, which will be described later, is opened in a part of the circumferential wall of the nine cylinders 80. This suction hole 1# communicates with a suction pipe (not shown) through a suction passage 19 provided in the cylinder 8 circumferential wall and the frame 2, and is connected to the suction hole JJt through a suction passage 19 provided in the frame 2. At a position approximately 90 degrees or more in the counter-rotational direction of the shaft 50, there is a discharge outlet. The hole 20 is open and communicates with the inside of the casing 1. The position of the suction hole 18 is set at the second position of the piston element 10 as shown in FIG.
Position 1 where the lowest slope J4m of the slope 14 is located approximately 906 degrees in the counter-rotation direction of the piston receiver 9 from the point S where they face each other.
It is necessary to provide it in the range up to the point. This is to ensure a sufficient amount of suction into the cylinder chamber 8a of the compressed gas and to time the suction.Actually, as shown in FIG. It is sufficient to provide it opposite to the IFT point at 60@pre-research. In this case, the suction hole 18 is kept open in the range 01 to #1 centered on point T, so that the compressed gas can be sucked in efficiently.

When the electric motor section 3 is energized, the piston receives rotation. The piston element 1o, which is in elastic Kfi contact with the piston receiver 9, reciprocates as the piston receiver 9 rotates, with at least a portion remaining in ghostly contact. Every time the piston receiver 9 rotates once, the first slope 11 changes to the slope 1 of tR2.
In other words, the second slope 14 is in the same direction as 4, as shown in Fig.
The first slope 11 is inclined in the opposite direction to 9 and IK.
The internal volume between these becomes maximum. Before the state (8), that is, when the piston receiver has returned by approximately 90'' of negative rotation, the suction hole I# is opened and the compressed gas is sucked in.

When the piston receiver 9 rotates from the above state, the piston element 10 descends, the suction hole 18 is closed by the peripheral wall of the piston receiver #O, and the internal volume between the piston receiver and the piston element 10 decreases. Therefore, the generally compressed gas is compressed. As shown in FIG. The internal volume between these becomes approximately zero. The compressed gas is sufficiently compressed and discharged from the discharge holes 20≠.

When the piston receiver 9 further rotates and the male stone 10 rises, the internal volume between them increases and the remaining compressed gas expands. After rotating approximately 90 degrees from the position of 迤), the pressurized #1lff gas is sucked in again, and the above-mentioned cycle is repeated.

FIG. 5 shows the movement of the piston receiver 9 and the piston element 10 in the cylinder chamber 8a as seen from the above-mentioned discharge hole 20@, in order every 90''. That is, in the state (4), the suction hole 18 continues to move. The cylinder chamber 8aK is opened, and the compressed gas sucked into the cylinder chamber 8aK is compressed. In the state φ), the suction hole 1s is closed by the piston receiver 9, the piston element 10 descends, and the compression of the compressed gas continues. It will be done.

In the opposite direction of the wharf, the piston element 10 is at the lowest position, and a discharge hole (not shown) opens to discharge compressed gas. In the state e), the suction hole 18 is opened, the compressed gas is sucked into the cylinder chamber 81, and the state returns to the closed state. By setting the position of the suction hole 18, the suction timing can be accurately determined and the force can be supervised to introduce a sufficient amount of pressurized Ill gas into the cylinder chamber 8a.

〔Effect of the invention〕

The present invention provides an inexpensive compressor that improves the compression efficiency of compressed gas, has smooth and reliable gas suction, and has a simple structure that eliminates the need for color, suction and discharge valves, and is easy to assemble and maintain. can.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Figure 1 is a longitudinal sectional view of an opposed swash plate compressor, Figure 2 is an explanatory diagram of the position setting of the suction amount,
FIG. 3 is an explanatory diagram as well, FIGS. 4(4) and 4(6) are diagrams for explaining the operation of the compressor section, and FIG. 5 is a schematic diagram for explaining the operation of the compressor section. 81...Cylinder chamber, 1...Suction hole, 20...Discharge hole, Jl...Cylinder end, P...Piston body, 9
... Piston receiver, 11 ... (first) slope, 10
... Piston child, 14... (#2) slope, 11S
...(first) lowest part of the slope.

Claims (1)

[Claims] A cylinder that has a cylinder chamber and is provided with a suction hole and a discharge hole that communicate with the cylinder chamber, and a cylinder that is housed in the cylinder chamber and opens and closes the suction hole and the discharge hole to introduce compressed gas into the cylinder chamber and compress it. The piston body is provided with a piston receiver which has one end surface as a slope and is rotationally driven, and the piston body is elastically pressed so that the slope formed on the one end surface comes into contact with the slope of the piston support. The suction hole is connected to the piston element which reciprocates in accordance with the rotational position of the piston receiver, and the suction hole extends from a portion facing the lowest part of the slope of the piston element to an angle of approximately 90° in the counter-rotational direction of the piston receiver. An opposed swash plate type compressor characterized by being installed at a portion facing the range.