JP2020128742A5

JP2020128742A5 -

Info

Publication number: JP2020128742A5
Application number: JP2019022461A
Authority: JP
Filing date: 2019-02-12
Publication date: 2021-07-26
Anticipated expiration: 2039-02-12

Description

上記目的を達成する圧縮機は、回転軸と、前記回転軸の回転に伴って回転するものであって、前記回転軸の軸方向に対して交差している回転体面を有する回転体と、前記回転軸の回転に伴って回転しないものであって、前記回転体面と前記軸方向に対向する固定体面を有する固定体と、前記回転体に形成されたベーン溝に挿入され、前記回転体の回転に伴って前記軸方向に移動しながら回転するベーンと、前記回転体面及び前記固定体面を用いて区画され、前記ベーンが前記軸方向に移動しながら回転することによって流体の吸入及び圧縮が行われる圧縮室と、を備え、前記固定体面は、前記回転体面と当接する固定体当接面と、前記固定体当接面に対して前記回転軸の周方向の両側に設けられ、前記固定体当接面から前記周方向に離れると前記回転体面から離れるように前記軸方向に湾曲した一対の湾曲面と、を含み、前記圧縮室は、前記回転体面と前記固定体当接面との当接箇所に対して前記回転体の回転方向側に設けられ、流体の吸入が行われる吸入空間と、前記当接箇所に対して前記回転方向側とは反対側に設けられ、流体の圧縮が行われる圧縮空間と、を含み、前記固定体当接面には、当該固定体当接面から凹んだシール凹部が形成されており、前記シール凹部内には、前記回転体面と当接することによって前記回転体面と前記固定体当接面との間をシールする固定体シール部材が設けられており、前記シール凹部は、前記回転軸の径方向外側から前記回転軸の径方向内側に向けて延びており、前記シール凹部の少なくとも一部は、前記回転軸の径方向に対して傾斜していることを特徴とする。 A compressor that achieves the above object includes a rotating shaft, a rotating body that rotates with the rotation of the rotating shaft, and a rotating body having a rotating body surface that intersects the axial direction of the rotating shaft. A fixed body that does not rotate with the rotation of the rotating shaft and has a fixed body surface that faces the rotating body surface in the axial direction, and is inserted into a vane groove formed in the rotating body to rotate the rotating body. A vane that rotates while moving in the axial direction is partitioned by using the rotating body surface and the fixed body surface, and the vane rotates while moving in the axial direction to suck and compress the fluid. A compression chamber is provided, and the fixed body surface is provided on both sides of the fixed body contact surface that comes into contact with the rotating body surface and the fixed body contact surface in the circumferential direction of the rotating shaft. The compression chamber includes a pair of curved surfaces curved in the axial direction so as to be separated from the rotating body surface when separated from the contact surface in the circumferential direction, and the compression chamber is in contact with the rotating body surface and the fixed body contact surface. A suction space provided on the rotation direction side of the rotating body with respect to the portion where the fluid is sucked and a side opposite to the rotation direction side with respect to the contact portion are provided to compress the fluid. A seal recess recessed from the fixed body contact surface is formed on the fixed body contact surface including a compressed space, and the rotation is caused by contacting the rotating body surface in the seal recess. A fixed body sealing member for sealing between the body surface and the fixed body contact surface is provided, and the sealing recess extends from the radial outside of the rotating shaft toward the radial inside of the rotating shaft. , At least a part of the seal recess is inclined with respect to the radial direction of the rotation shaft .

この点、本構成によれば、固定体シール部材によって回転体面と固定体面との間がシールされている。これにより、吸入空間と圧縮空間との間をシールする当接箇所のシール性を向上させることができ、それを通じて圧縮空間内の圧縮流体が吸入空間に漏れることを抑制できる。
また、シール凹部の少なくとも一部が径方向に対して傾斜しているため、固定体シール部材とベーンとが同時に当接する面積を小さくできる。これにより、固定体シール部材との当接に起因してベーンの回転に支障が生じることを抑制できる。 In this respect, according to this configuration, the rotating body surface and the fixed body surface are sealed by the fixed body sealing member. As a result, the sealing property of the contact portion that seals between the suction space and the compression space can be improved, and the compressed fluid in the compression space can be suppressed from leaking to the suction space through the sealing property.
Further, since at least a part of the seal recess is inclined in the radial direction, the area where the fixed body seal member and the vane come into contact with each other at the same time can be reduced. As a result, it is possible to prevent the vane from being hindered from rotating due to contact with the fixed body sealing member.

また、３つのパーツ室のうち第１フロント圧縮室Ａ４ａよりも回転方向Ｍ側とは反対側に配置されているパーツ室を第２フロント圧縮室Ａ４ｂとする。第２フロント圧縮室Ａ４ｂの少なくとも一部は、フロント当接箇所Ｐｆに対して回転方向Ｍ側とは反対側に配置されている。 Further, of the three parts chambers, the parts chamber arranged on the side opposite to the rotation direction M side from the first front compression chamber A4a is referred to as the second front compression chamber A4b. At least a part of the second front compression chamber A4b is arranged on the side opposite to the rotation direction M side with respect to the front contact portion Pf.

図７に示すように、フロント圧縮室Ａ４と同様に、リア圧縮室Ａ５は、３つのベーン１３１によって、第１リア圧縮室Ａ５ａと、第１リア圧縮室Ａ５ａよりも回転方向Ｍ側とは反対側に配置されている第２リア圧縮室Ａ５ｂと、周方向における第１リア圧縮室Ａ５ａと第２リア圧縮室Ａ５ｂとの間に配置されている第３リア圧縮室Ａ５ｃと、に仕切られている。第１リア圧縮室Ａ５ａ、第２リア圧縮室Ａ５ｂ、第３リア圧縮室Ａ５ｃは、第１フロント圧縮室Ａ４ａ、第２フロント圧縮室Ａ４ｂ、第３フロント圧縮室Ａ４ｃと同様であるため、詳細な説明を省略する。 As shown in FIG. 7, similarly to the front compression chamber A4, the rear compression chamber A5 has the first rear compression chamber A5a and the first rear compression chamber A5a opposite to the rotation direction M side by the three vanes 131. a second rear compression chamber A5b disposed on a side, is divided into a third rear compression chamber A5c disposed between the first rear compression chamber A5a and second rear compression chamber A5b in the circumferential direction There is. The first rear compression chamber A5a, the second rear compression chamber A5b, and the third rear compression chamber A5c are the same as the first front compression chamber A4a, the second front compression chamber A4b, and the third front compression chamber A4c. The explanation is omitted.

Claims

Rotation axis and
A rotating body that rotates with the rotation of the rotating shaft and has a rotating body surface that intersects the axial direction of the rotating shaft.
A fixed body that does not rotate with the rotation of the rotating shaft and has a fixed body surface that faces the rotating body surface and the axial direction.
A vane that is inserted into a vane groove formed in the rotating body and rotates while moving in the axial direction with the rotation of the rotating body.
A compression chamber partitioned by the rotating body surface and the fixed body surface, in which the fluid is sucked and compressed by rotating the vane while moving in the axial direction.
With
The fixed body surface is
A fixed body contact surface that comes into contact with the rotating body surface,
A pair of curves that are provided on both sides of the rotating shaft in the circumferential direction with respect to the fixed body contact surface and are curved in the axial direction so as to be separated from the rotating body surface when the fixed body contact surface is separated from the fixed body contact surface in the circumferential direction. Face and
Including
The compression chamber
A suction space provided on the rotation direction side of the rotating body with respect to the contact point between the rotating body surface and the fixed body contact surface and where fluid is sucked.
A compression space provided on the side opposite to the rotation direction side with respect to the contact point and where the fluid is compressed,
Including
A seal recess recessed from the fixed body contact surface is formed on the fixed body contact surface.
A fixed body sealing member is provided in the seal recess to seal between the rotating body surface and the fixed body contact surface by contacting the rotating body surface .
The seal recess extends from the radial outer side of the rotating shaft toward the radial inner side of the rotating shaft.
A compressor characterized in that at least a part of the seal recess is inclined with respect to the radial direction of the rotating shaft.

The seal recess is
With the bottom of the recess
The side surface of the first recess rising from the bottom surface of the recess and
A second recessed side surface that stands up from the bottom surface of the recessed portion and is arranged on the rotation direction side of the first recessed side surface.
Have,
The fixed body sealing member is
The seal surface that comes into contact with the rotating body surface and
The back surface of the seal, which is arranged on the side opposite to the front surface of the seal and faces the bottom surface of the recess,
Have,
The compressor according to claim 1, wherein the fixed body sealing member is pressed toward the rotating body surface by a back pressure space formed between the back surface of the seal and the bottom surface of the recess.

The compressor according to claim 2, wherein the fixed body sealing member is arranged in the sealing recess with a gap between at least one of the side surfaces of both recesses.

At the end of the back surface of the seal on the suction space side, a protruding portion protruding toward the bottom surface of the recess is provided.
The compressor according to claim 2 or 3, wherein the back pressure space is arranged on the compression space side of the protrusion.

Of claims 1 to 4, the seal recess is inclined with respect to the suction space so as to be arranged on the suction space side from the radial outside of the rotation shaft toward the radial inside of the rotation shaft. The compressor according to any one item.

The vane
The vane body inserted in the vane groove and
A vane seal member that is attached to the axial end surface of the vane body in a state of being movable in the axial direction with respect to the vane body and abuts on the fixed body surface.
With
The compressor according to any one of claims 1 to 5 , wherein the vane seal member is made of resin and the fixed body seal member is made of metal.

A cylinder portion having a cylinder inner peripheral surface used to partition the compression chamber in cooperation with the rotating body surface and the fixed body surface, and accommodating the rotating body and the fixed body.
A discharge passage provided in the cylinder portion and communicating with the compression space to discharge the compressed fluid compressed in the compression space.
The compressor according to any one of claims 1 to 6.