JPH09324601A - Compression mechanism, internal combustion engine and supercharger using the mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compression mechanism which can perform smooth compression with a little oscillation generated at the time of compression, also provide an internal combustion engine and a supercharger using the compression mechanism. SOLUTION: A compression mechanism 1 has a disc 3, a rotational body 5 which has a worm slid on the surface of the disc 3, and a worm wheel 6 which is rotated while being engaged with the worm arranged on the disc 3. Volume V of a compression chamber formed between the worm wheel 6 and the worm and the disc 3 in an air tight state is varied in accordance with the rotation of the rotational body 5. An internal combustion engine 2 adopts a compression chamber as a combustion chamber at the time of operation. A supercharger feeds exhaust gas to the compression chamber. By the pressure of the gas, the rotational body 5 is rotated and compressed air is fed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compression mechanism for compressing and sending gas, liquid, etc., and an internal combustion engine and a supercharger using this compression mechanism.

[0002]

2. Description of the Related Art Conventionally, as an internal combustion engine used in, for example, an automobile, a reciprocating type compression mechanism called a reciprocating engine (hereinafter referred to as a reciprocating engine) is known. The reciprocating engine includes a cylinder, a piston that reciprocates in the cylinder, and a crankshaft with which the piston engages.
There is a 4-stroke cycle engine that has four cycles of "intake", "compression", "explosion" and "exhaust" as one cycle.

In the compression mechanism of this reciprocating engine, the volume of the combustion chamber formed between the cylinder and the piston changes from the maximum value to the minimum value due to the reciprocating motion of the piston, whereby the mixture in the combustion chamber is compressed. It is what is done. After that, by burning and exploding the compressed air-fuel mixture, the piston is pushed down and the crankshaft rotates. As described above, the compression mechanism that compresses and sends out gas or the like by utilizing the reciprocating motion of the cylinder is widely used in each industrial field.

Further, as an internal combustion engine using a rotary compression mechanism, an eyebrow type rotary housing, a triangular rotor which rotates while slidingly contacting an inner wall of the rotary housing, and an inner hole provided in an inner hole of the rotor. A rotary engine having a gear and an eccentric shaft having an external gear that meshes with the gear is known.

In the rotary type compression mechanism of the rotary engine, the volume of the combustion chamber formed between the rotor and the rotary housing changes from the maximum value to the minimum value as the rotor rotates, whereby the combustion chamber is rotated. The air-fuel mixture is compressed. After this, burn the compressed mixture.
Due to the explosion, the rotor further rotates, and accordingly, the external gear of the eccentric shaft that meshes with the internal gear of the rotor rotates, so that the eccentric shaft rotates.

[0006]

In the reciprocating type compression mechanism described above, since the piston, connecting rod, etc. having a large inertial mass reciprocate, the mechanical balance is poor,
There is a problem that large vibration is likely to occur during the compression operation.

On the other hand, in the rotary type compression mechanism of the rotary engine, since the center of rotation of the rotor and the center of rotation of the eccentric shaft are eccentric, although they are smaller than those of the reciprocating type compression mechanism, considerable vibration occurs during compression operation. There is a problem that is caused.

The present invention has been made in order to solve the above-mentioned problems, and has a small vibration generated during a compression operation and a smooth compression operation, and an internal combustion engine and an engine using the compression mechanism. The purpose is to provide a feeder.

[0009]

According to the compression mechanism of claim 1, an annular ring having a ring and a worm that slides on an annular surface extending from the inner hole to the outer end of the ring is formed. A rotary body rotatably provided relative to the worm and a worm wheel provided on the ring so as to rotate while engaging with the worm. The worm wheel, the worm and the ring are hermetically sealed. The volume of the compression chamber formed in this state increases or decreases as the rotary body rotates.

With this configuration, the compression mechanism can perform the compression operation by the rotation of the rotating body, and further, the rotating body slides on the annular surface of the ring, so that the compression mechanism occurs during the compression operation. Vibration is small. Therefore, a smooth compression operation can be performed.

In the above, the worm wheel is provided with a first sealing member for sealing between the worm and the worm of the rotating body and a second sealing member for sealing between the worm wheel and the ring. ,
It is preferable that the worm is provided with a third sealing member that seals between the ring and the worm wheel.

[0012] With this configuration, since the airtightness of the compression chamber is improved, the efficiency of the compression mechanism is improved.

Further, the internal combustion engine includes the compression mechanism, an air-fuel mixture feeding means for feeding the air-fuel mixture into the compression chamber, and an ignition means for igniting the air-fuel mixture in the compression chamber when the volume of the compression chamber is at a minimum value. It is preferable to provide an exhaust means for exhausting the combustion gas after the air-fuel mixture in the compression chamber is burned.

According to this structure, since the compression mechanism that produces a small vibration during the compression operation is used, the internal combustion engine is
Vibration generated during operation is small and smooth operation can be performed. Further, when the volume of the compression chamber is at the minimum value, the air-fuel mixture in the compression chamber is ignited, so the operating efficiency is good.

Further, the supercharger includes the above-mentioned compression mechanism, air delivery means for delivering the air compressed by the compression mechanism, exhaust gas supply means for supplying exhaust gas to the compression chamber on the side where the volume increases, and compressed air. And a shut-off portion for preventing mixing of the exhaust gas.

With this configuration, since the supercharging operation can be performed by using the compression mechanism in which the vibration generated during the compression operation is small, the supercharger has a small vibration generated during the supercharging operation and is smooth. Supercharged operation can be performed.

[0017]

DETAILED DESCRIPTION OF THE INVENTION Referring to the accompanying drawings,
A compression mechanism according to the first embodiment of the present invention and an internal combustion engine using this compression mechanism will be described. FIG. 1 shows (a) a plan view and (b) a schematic cross-sectional view of a compression mechanism 1 and an internal combustion engine 2 using the compression mechanism 1. First, the compression mechanism 1 will be described. As shown in FIGS. 1 to 4, the compression mechanism 1 includes an annular ring 3, a rotating body 5 having a worm 4, and a worm 4 as the rotating body 5 rotates. A worm wheel 6 provided on the circular ring 3 is configured to rotate while engaging.

As shown in FIG. 4, the circular ring 3 has a circular cross section, and its peripheral surface is formed into a smooth circular ring surface (torus) 3a. As will be described later, the inner hole 3b of the circular ring 3
The worm 4 of the rotating body 5 slides on the annular surface 3a extending from the outer end portion 3c to the outer end portion 3c. A worm wheel 6 is rotatably provided on the circular ring surface 3 a with respect to the circular ring 3. The worm wheel 6 has eight teeth 60, and the teeth 60 engage with the worm 4 of the rotating body 5 as described later. Further, as shown in FIG. 6, the circular ring 3 is fixed to a predetermined member (not shown) by a column 30, so that the circular ring 3 can rotate at the same time when the rotating body 5 described later rotates. There is no.

As shown in FIGS. 4 (b) and 5 (a), the worm wheel 6 is axially supported by the shaft portion 3d in the annular groove 3e of the annular ring 3, whereby the worm wheel 6 is It is configured to be rotatable with respect to the circular ring 3. Moreover, when the worm wheel 6 engages with the worm 4, the first sealing member 7 is provided at the end of the tooth 60 so that no gap is created between the end of the tooth 60 and the end of the worm 4. Is provided. Further, a second sealing member 8 is provided between the worm wheel 6 and the annular groove 3e of the circular ring 3. As shown in FIG. 5B, the second sealing member 8 is a ring-shaped member that is in sliding contact with the side surface of the worm wheel 6,
The space between the worm wheel 6 and the annular groove 3e is sealed so that no gap is created.

As shown in FIG. 2, the rotating body 5 is provided with a worm 4 having a peculiar shape, and the rotating body 5 is integrally formed by combining a plurality of constituent members (not shown). . The worm 4 has teeth 60 of the worm wheel 6 when the worm 4 rotates as the rotating body 5 rotates.
However, it has a shape that allows the surface of the worm 4 to slide smoothly. Further, the relationship between the worm 4 and the worm wheel 6 is that when the worm 4 makes one full turn in the counterclockwise direction in FIG.
Rotate one pitch (45 °) clockwise in (b),
That is, when the worm 4 makes eight counterclockwise rotations in FIG. 1A, the worm wheel 6 makes one rotation clockwise in FIG. 1B.

The tip portion 40 of the worm 4 has a rotating body 5
When viewed from above, it has a spiral shape as shown by the dotted line in FIG. 1 (a), and as shown in FIG. 3 which is a view (B)-(B) of FIG. 2 (a). It has a spiral shape. The tip portion 40 of the worm 4 has an annular surface 3a that spreads from the inner hole 3b of the annular ring 3 to the outer end portion 3c thereof as the rotating body 5 rotates.
Slide on top. On the other hand, a tip end portion 40 of the worm 4 is provided with a third sealing member 9 as shown in FIG. 2B, and the third sealing member 9 circles the worm 4 and the circle when sliding. The space between the ring surface 3a and the ring surface 3a is sealed so that no gap is formed.

With such a configuration, in the compression mechanism 1 of the first embodiment, the twisted ring-shaped closed compression chamber 10 is provided between the teeth 60 of the worm wheel 6, the worm 4, and the annular surface 3a. It is formed. For example, FIG.
In the state shown in (b), the compression chamber 10b is located between the tooth 60b and the tooth 60c, and the compression chamber 10b is located between the tooth 60c and the tooth 60d.
The compression chamber 10d is formed between the tooth 60d and the tooth 60e. This compression chamber 10 has a worm 4
It is formed when the (rotating body 5) rotates counterclockwise α ° from the state shown in FIG. 1 (a), and the portion of the worm 4 indicated by the symbol (A) reaches the position of the worm wheel 6. It The position of the worm 4 indicated by the symbol (A) when it reaches the worm wheel 6 is hereinafter referred to as the compression start position (A). Further, in the compression chamber 10, the worm 4 reaches the maximum expansion position (C) shown in FIG. 3 by rotating the worm 4 from the compression start position (A) by 1080 ° + β ° (3 rotations + β / 360 rotations), and further the maximum Inflated position (C)
It is configured so that the seal can be released when it is rotated to a position just past.

As described above, in the compression mechanism 1 of the first embodiment, four compression chambers 10 are formed in the compression mechanism 1 at the compression start position (A). Each of these teeth 60
The volume V of the compression chamber 10 formed therebetween increases or decreases as the rotating body 5 rotates. Hereinafter, the principle and the operation of increasing or decreasing the volume V of the compression chamber 10 will be described with reference to FIGS. 1 to 7. The rotating body 5 is assumed to be rotationally driven by a rotational drive device such as a starting device 14 (FIG. 2) described later.

First, in FIG. 1A, a spiral band shown by a dotted line shows a locus of the tip portion 40 of the worm 4. In the figure, when the rotary body 5 rotates counterclockwise, the worm wheel 6 rotates clockwise as shown in FIG. 1B. When the rotary body 5 rotates counterclockwise by α ° and reaches the compression start position, the teeth 60a
Fits between the two tips 40, 40, and the first sealing member 7 provided at the tips of the teeth 60a seals between the teeth 60a and the worm 4 so that no gap is formed. In addition, the second sealing member 8 includes the worm wheel 6 and the ring 3.
The third sealing member 9 seals between the worm 4 and the annular surface 3a. in this way,
At the compression start position (A), due to the sealing of the respective sealing members 7, 8, 9 between the tooth 60a and the tooth 60b adjacent thereto,
A compression chamber 10x (FIG. 7) having a volume V is formed.

Between the tooth 60a, the tooth 60b adjacent to the tooth 60a, and the two tips 40, 40, the worm wheel 6,
Compression chamber 1 formed by the worm 4 and the annular surface 3a
FIG. 7 shows how the volume V of 0x changes as the rotating body 5 rotates counterclockwise. In the figure,
The loci of the two tip portions 40, 40 are shown in a simplified linear manner. As shown in the figure, when the tooth 60a reaches the compression start position (A), the compression chamber 10x having the volume V0 is formed and the compression is started. Then, from this position, the rotating body 5
Rotates counterclockwise by 360 ° (one rotation), the worm wheel 6 rotates clockwise by one pitch accordingly, and the tooth 60a comes to the position of the adjacent tooth 60b.
The volume V of x is reduced to the volume V1 (V1 <V0).

The volume V of the compression chamber 10x is reduced because the tip 40 of the worm 4 has a spiral shape as shown in FIG.
When 0 rotates, the two tips 40 forming the compression chamber,
This occurs when the distance between 40 and the center of rotation 0 of the rotating body 5 is reduced. From this position, when the rotating body 5 further rotates 360 ° counterclockwise for a total of 720 ° rotation, the compression chamber 1
The volume of 0x decreases from V1 to V2 (V2 <V1). After that, when the rotating body 5 further rotates 360 ° counterclockwise for a total of 1080 °, the volume of the compression chamber 10x increases from the volume V2 to V3 (V2 <V3). When the rotating body 5 reaches the maximum expanded position (C), which is rotated by β ° further counterclockwise by a total of 1080 + β ° from the position rotated by a total of 1080 °, the compression chamber 10 is rotated.
The volume of x increases from the volume V3 to V4 (V4> V3). Furthermore, when the worm 4 further rotates, the gap between the tip portions 40, 40 of the worm 4 and the tooth 60 becomes large, and the sealing of the compression chamber 10x is released.

As described above, the volume of the compression chamber 10x gradually decreases from the compression start position with the rotation of the rotating body 5 and becomes the minimum value Vm.
It decreases to in, and thereafter increases. As shown in FIG. 2, the worm 4 has a shape in which the diameter decreases from the upper end toward the bottom, becomes the smallest in the central part, and then increases toward the lower part. This is because The volume V of the compression chamber 10x is the minimum value Vmi
1 (b), the two teeth 60, 60 of the worm wheel 6 are at the positions of the teeth 60c and 60d, and the compression chamber 10c is formed between them. Is being done. That is, when the two teeth 60 are positioned symmetrically with respect to the horizontal axis, the volume V of the compression chamber 10x becomes the minimum value Vmin, and the gas in the compression chamber 10x is compressed most. This position is a position where the rotary body 5 has rotated twice from the position shown in FIG. 1A, and is hereinafter referred to as the maximum compression position. Since the volume V of the compression chamber 10x is V0 at the start of compression, the compression ratio of this compression mechanism 1 is V0.
It becomes 0 / Vmin. As described above, according to the compression mechanism 1 of the first embodiment, the rotational force is applied to the rotating body 5 and the rotating body 5 rotates, so that the volume V of the compression chamber 10x increases or decreases, and the compression chamber 10x. Gas trapped inside,
It is configured to be compressed and expanded. Further, in the compression mechanism 1, the rotary body 5 is not eccentric with respect to the rotation axis 0 and is configured almost symmetrically.
It rotates on the smooth annular surface 3a of the annular ring 3. This allows
The compression mechanism 1 generates less vibration than the conventional one during the compression operation, and can be operated smoothly.

The internal combustion engine 2 using the compression mechanism 1 having such a structure will be described. In addition to the structure of the compression mechanism 1 described above, the internal combustion engine 2 is shown in FIG. 1 (b), FIG. 4 (a),
As shown in (b), the air-fuel mixture provided penetrating the inside of the annular ring 3 is forcibly sent into the compression chamber 10, and the air-fuel mixture supply passage (mixture air supply means) 11 is provided. An ignition device (ignition means) 12 for burning the air-fuel mixture in the chamber 10 and an exhaust passage (exhaust means) 13 for exhausting combustion gas are provided. Further, in the internal combustion engine 2, the compression chamber 10 of the compression device 1 is the combustion chamber 1 for burning the air-fuel mixture.
It becomes 0. As shown in FIG. 4 (a), the air-fuel mixture supply passage 11 and the exhaust passage 13 are not located on the same cross section of the circular ring 3, but for the sake of explanation, FIG. 1 (b) and FIG. In b), they are shown on the same cross section of the ring 3.

The air-fuel mixture feed passage 11 is provided so as to penetrate the inside of the annular ring 3 and communicate with the inside of the combustion chamber 10.
A valve mechanism (mixture mixture feeding means) 11 is provided at the opening on the ring 3.
a is provided. The valve mechanism 11a is the compression mechanism 1
When the combustion chamber 10 is formed at the compression start position (A) in (1), it is provided at a predetermined position on the annular surface 3a facing the inside of the combustion chamber 10. Further, the air-fuel mixture is pressure-fed from the outside into the air-fuel mixture supply passage 11, and the air-fuel mixture is opened by opening the valve mechanism 11a at a predetermined timing (every one rotation of the rotating body 5). It is sent to the combustion chamber 10. Further, the ignition device 12 is provided on the annular surface 3a, and when the volume V of the combustion chamber 10 is the minimum value Vmin,
That is, when the combustion chamber 10c is formed between the tooth 60c and the tooth 60d in FIG.
It is provided at a predetermined position where the air-fuel mixture inside can be burned. An ignition signal is input to the ignition device 12 from the outside via a signal line 12a. Further, the exhaust passage 13 is provided so as to penetrate through the ring 3 and exhaust the combustion gas of the air-fuel mixture in the combustion chamber 10, and the opening 13a of the exhaust passage 13 on the combustion chamber 10 side is As shown by the chain double-dashed line in FIG. 3, it is provided at a predetermined position where the combustion gas in the combustion chamber 10 can be exhausted immediately before the combustion chamber 10 is unsealed. The compression ratio of this internal combustion engine 2 is V0 / Vmin as described above.

Further, the internal combustion engine 2 is provided with a starting device 14 as shown by a two-dot chain line in FIG. The starter 14 is composed of, for example, a motor, and forcibly rotates the rotating body 5 when the internal combustion engine 2 is started until the internal combustion engine 2 reaches a continuous operation state. Then, when the internal combustion engine 2 is started by the forced rotation of the rotating body 5 and the combustion chamber 10 formed at the compression start position (A) reaches the maximum compression position where the minimum volume Vmin is reached, the combustion chamber 10 The air-fuel mixture therein is ignited by the ignition device 12 and burned. Combustion of this mixture causes combustion chamber 10
The pressure P generated therein acts as a force for rotating the worm 4 of the rotating body 5. The principle that the pressure P generated by the combustion of the air-fuel mixture in the combustion chamber 10 acts as a force for rotating the worm 4 of the rotating body 5 will be described with reference to FIGS. 8 and 9.

FIG. 8 is a partially enlarged and omitted view of FIG. 3 for explanation. In the figure, when the air-fuel mixture in the combustion chamber 10 burns, a pressure P is generated in the combustion chamber 10, and this pressure P is due to the teeth 60, 60 of the two worm wheels 6 forming the combustion chamber 10. It acts evenly on the worm 4 and the annular surface 30a. Here, the case where the pressure P acts on the worm 4 will be described, and the other parts will be omitted. When this pressure P acts on the worm 4,
The pressure P acting near the tip 40 of the worm 4 is as shown in FIG.
As shown in (2), it is divided into two component components P1 and P2.

Looking at these two component force components P1 and P2 at two points E and F near the tip portion 40 of the worm 4, the component force component P2 at point E is the worm 4 (rotating body). 5) Acts toward the rotation center O, and the component force component P2 ′ at point F acts away from the rotation center O of the worm 4. Here, since P2 = P2 'and the acting directions thereof are opposite by 180 °, the component force component P2 at the point E and the component force component P2' at the point F are balanced and do not act on the worm 4.

On the other hand, the component force component P1 at the other point E is
As shown in FIG. 9, when the distance from the rotation center O of the worm 4 is L1, the worm 4 acts so as to rotate counterclockwise in the figure with a rotation moment M1 = P1 · L1. Similarly, when the distance from the rotation center O of the worm 4 is L1 ′, the component force component P1 ′ at the point F is the rotation moment M1 ′ = P1 ′ · L1 ′, and the worm 4
Acts so as to rotate clockwise in the figure. This 2
Comparing the two rotation moments M1 and M1 ′, P1
= P1 'and L1>L1',M1> M1 '. Therefore, the component of the pressure P acts as a rotational moment of (M1-M1 ') to rotate the worm 4 counterclockwise.

As a result, the pressure P generated by the combustion of the air-fuel mixture in the combustion chamber 10 acts as a force (rotational moment) for rotating the worm 4 of the rotating body 5. In particular, the shape of the worm 4 is
Since the tip portion 40 of the worm 4 has a shape that gradually opens in a spiral shape, the rotational moment for rotating the worm 4 of the rotating body 5 also rapidly increases. As described above, the pressure P generated by the combustion of the air-fuel mixture in the combustion chamber 10 causes the rotating body 5 to move to the position shown in FIG.
Alternatively, the force is changed to the counterclockwise rotating force shown in FIG.

The operation of the internal combustion engine 2 having the above-described structure will be described below.
The operation operation in (1) is composed of 5 cycles of (1) feed stroke, (2) compression stroke, (3) combustion stroke, (4) expansion stroke, and (5) exhaust stroke as one cycle. First,
When the rotating body 5 is rotationally driven by the starting device 14 to the compression start position (A), the combustion chamber 10 is formed between the two teeth 60, 60 of the worm wheel 6, the worm 4, and the annular surface 3a. To be done.

Then, in the formed combustion chamber 10,
The air-fuel mixture is forcibly sent through the air-fuel mixture feed passage 11 and the valve mechanism 11a [(1) feed stroke].

As the rotor 5 further rotates, the volume V in the combustion chamber 10 decreases, and the air-fuel mixture in the combustion chamber 10 is compressed [(2) compression stroke].

Then, the rotating body 5 rotates and the combustion chamber 10
When it reaches the maximum compression position where V is the minimum volume Vmin, the air-fuel mixture in the combustion chamber 10 is ignited by the ignition device 12 and burns [(3) Combustion stroke].

The pressure P generated in the combustion chamber 10 by the combustion of the air-fuel mixture acts as a force (rotational moment) for rotating the worm 4 of the rotating body 5, whereby a rotating force is applied to the rotating body 5. To be As described above, the rotating force further increases as the rotating body 5 rotates toward the maximum expansion position, so that the rotating body 5 is further accelerated. At the same time, with this rotation, the volume V in the combustion chamber 10 gradually increases [(4) expansion stroke].

When the rotating body 5 reaches the maximum expansion position, the combustion gas in the combustion chamber 10 is exhausted through the exhaust passage 13 [(5) Exhaust stroke].

As described above, in the internal combustion engine 2 of the first embodiment, in the combustion chamber 10 formed by the teeth 60 of the worm wheel 6 of one set, (1) the feed stroke, (2)
An operation operation is performed in which the compression stroke, (3) combustion stroke, (4) expansion stroke, and (5) exhaust stroke constitute one cycle. At the same time, when the rotating body 5 makes one rotation, the teeth 60 rotate by one pitch, and another combustion chamber 10 is formed by the teeth 60, 60 of the next set of adjacent worm wheels 6, and this combustion chamber 10 Also in, the same driving operation is performed. Therefore, since the teeth 60 of the worm wheel 6 also rotate with the rotation of the rotating body 5, the combustion chambers 10 are formed one after another, and the one cycle operation is performed. As a result, the above-described rotational force is sequentially applied to the rotating body 5, and the internal combustion engine 2
Indicates a continuous operation state. In this internal combustion engine 2,
The rotating body 5 is not eccentric with respect to the rotation axis 0, and is configured almost symmetrically. Moreover, the ring surface 3a of the ring 3 is formed.
Since it rotates above, the vibration generated during the driving operation is smaller than before, and the operation can be smoothly performed.

Next, a supercharging device 100 shown in FIG. 10 will be described as a device using the compression mechanism according to the second embodiment. In FIG. 10, the same components as those in the first embodiment are designated by the same reference numerals. FIG. 10 is a schematic cross-sectional view of a supercharging device 100 using the compression mechanism 1. The supercharging mechanism 100 penetrates the inside of the annular ring 3 and sends out compressed air to the internal combustion engine E side ( Air feeding means) 31
Then, in the compression chamber 10c on the side where the volume V increases, the internal combustion engine E
An exhaust gas passage (exhaust gas supply means) 32 to which exhaust gas is supplied from the side, and a shutoff portion 33 formed integrally with the inner hole portion of the annular ring 3 for preventing mixing of compressed air and exhaust gas. There is. In addition, the rotating body 5 has a hole 33 a in the blocking portion 33.
A small diameter portion 5a provided rotatably therein is provided therein.
Furthermore, the casing 34 formed integrally with the ring 3 is
It is provided so as to enclose the rotating body 5, and the casing 34 is provided with an air supply port 35 and an exhaust gas discharge passage 36.

With this configuration, in the supercharging mechanism 100, exhaust gas is supplied from the internal combustion engine E side to the compression chamber 10c via the exhaust gas passage 32. At this time, the pressure of the exhaust gas acts as a rotational force on the worm 4 according to the principle shown in FIGS. 8 and 9 described above, so that the rotating body 5 rotates in the direction of the arrow in the drawing. At this time, the air entered from the air supply port 35 is compressed in the compression chamber 10 formed between the teeth 60 of the worm wheel 6. After that, when the rotating body 5 further rotates in the direction of the arrow in the drawing, the air passage 31 and the compression chamber 10 communicate with each other, and the compressed air is sent to the internal combustion engine E side. At the same time, the exhaust gas supplied to the compression chamber 10c is discharged to the exhaust gas discharge passage 36 side while acting to rotate the rotating body 5.

As described above, the supercharger 100 converts the pressure of the exhaust gas of the internal combustion engine E into the rotational force of the rotating body 5, and the rotational force can send the compressed air to the internal combustion engine E side. In the supercharger 100, the rotating body 5 is not eccentric with respect to the rotation axis 0, is configured almost symmetrically, and further rotates on the annular surface 3a of the annular ring 3, and therefore, during driving operation. The generated vibration is small and it can be operated smoothly.

Although the number of teeth 60 of the worm wheel 6 is eight in the above embodiment, the number of teeth of the worm wheel 6 may be any number, and the shape of the worm 4 can be changed accordingly. Good. The shape of the tooth 60 is
Any shape may be used as long as the compression chamber 10 can be formed between the tooth 60 and the worm 4, and the rotating body 5 can smoothly rotate. This allows the compression mechanism to set various compression ratios.

In the above embodiment, the ring 3 is fixed so as not to rotate and the rotating body 5 is rotated. However, the rotating body 5 is fixed and the ring 3 side is rotated. You may let me.

In the above embodiment, the air-fuel mixture supply passage 11 and the exhaust passage 13 are provided in the ring 3.
The air-fuel mixture supply passage may be provided on the rotary body 5 or may be supplied from the outside into the worm with a pipe immediately before the compression chamber is formed. Similarly, an exhaust passage may be provided on the rotating body 5 or may be discharged as it is after the combustion chamber is unsealed. Further, the air-fuel mixture can be sent into the combustion chamber 10 without using the air-fuel mixture inlet passage and the exhaust passage,
It is sufficient that the combustion gas can be exhausted.

In the above embodiment, the compression mechanism 1
Although the internal combustion engine and the supercharger using the are shown, but not limited to this,
The compression mechanism 1 of the present invention may be used in a supercharger, a pump or the like.

As described above, according to the compression mechanism of the present invention, the compression mechanism can perform the compression operation by the rotation of the rotating body, and further, this rotating body moves on the annular surface of the annular ring. Since it slides, the vibration generated during the compression operation is small. Therefore, a smooth compression operation can be performed. Further, in an internal combustion engine using such a compression mechanism, vibration generated during operation is small, and smooth operation can be performed.
Furthermore, in a supercharger using such a compression mechanism, vibration generated during supercharging operation is small, and smooth supercharging operation can be performed.

[Brief description of drawings]

FIG. 1A is a plan view of a compression mechanism according to a first embodiment of the present invention and an internal combustion engine using the compression mechanism;
(B) It is a schematic sectional drawing.

FIG. 2A is a front view of a rotary body of a compression mechanism, and FIG.

FIG. 3 is a view taken in the direction of arrows BB in FIG. 2;

4A is a plan view of a ring of a compression mechanism, and FIG. 4B is a schematic sectional view.

5A is a schematic cross-sectional view of an annular ring and a worm wheel of the compression mechanism, and FIG. 5B is an external view of the second sealing member 8. FIG.

FIG. 6 is an external view of a ring of a compression mechanism.

FIG. 7 is an operation explanatory diagram of an internal combustion engine using a compression mechanism.

FIG. 8 is a schematic diagram illustrating the principle of generation of rotational force in an internal combustion engine that uses a compression mechanism.

9 is a schematic diagram supplementing the description of FIG.

FIG. 10 is a schematic sectional view of a supercharger using a compression mechanism according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compression mechanism 2 Internal combustion engine 3 Annular ring 3a Annular surface 3b Inner hole 3c Outer end part 4 Worm 5 Rotating body 6 Worm wheel 7 First sealing member 8 Second sealing member 9 Third sealing member 10 Compression chamber 11 Mixture feeding means (mixture passage) 11a Mixture feeding means (valve mechanism) 12 Ignition means (ignition device) 13 Exhaust means (exhaust passage) 31 Air delivery means (air passage) 32 Exhaust gas supply means (Exhaust gas passage) 33 Breaker 100 Supercharger

Claims (4)

[Claims] 1. A rotating body provided with a circular ring and a worm that slides on a circular ring surface extending from an inner hole to an outer end of the circular ring so as to be rotatable relative to the circular ring. And a worm wheel provided on the ring so as to rotate while engaging with the worm, and the volume of the compression chamber formed in a sealed state between the worm wheel, the worm and the ring. However, the compression mechanism increases or decreases with the rotation of the rotating body. 2. The worm wheel is provided with a first sealing member that seals with the worm of the rotating body and a second sealing member that seals with the annular ring. And
The compression mechanism according to claim 1, wherein the worm is provided with a third sealing member that seals between the annular ring and the worm wheel. 3. A compression mechanism according to claim 1, a mixture feeding means for feeding a mixture into the compression chamber, and a mixture gas inside the compression chamber when the volume of the compression chamber is at a minimum value. An internal combustion engine comprising: an ignition means for igniting and an exhaust means for exhausting combustion gas after the air-fuel mixture in the compression chamber is combusted. 4. A compression mechanism according to claim 1, an air delivery means for delivering air compressed by the compression mechanism, and an exhaust gas supply means for supplying exhaust gas into the compression chamber on the side where the volume increases. A supercharger comprising: a shutoff unit for preventing the air and the exhaust gas from being mixed with each other.