JP6336530B2 - Scroll fluid machine and scroll member used therefor - Google Patents

Description

  The present invention relates to a scroll fluid machine and a scroll member used therefor.

  In general, a scroll fluid machine is known in which a fixed scroll member provided with a spiral wall on an end plate and a orbiting scroll member are engaged with each other, and a revolving orbiting motion is performed to compress or expand a fluid.

  As such a scroll fluid machine, a so-called stepped scroll compressor as shown in Patent Document 1 is known. This stepped scroll compressor is provided with stepped portions at positions along the spiral direction of the tooth tip surface and the tooth bottom surface of the spiral wall body of the fixed scroll and the orbiting scroll, and the outer periphery of the wall body with each step portion as a boundary. The height on the side is higher than the height on the inner peripheral side. The stepped scroll compressor is compressed not only in the circumferential direction of the wall but also in the height direction (three-dimensional compression), so compared to a general scroll compressor (two-dimensional compression) that does not have a stepped portion. The displacement can be increased and the compressor capacity can be increased.

JP2015-55173A

  However, the stepped scroll compressor has a problem that fluid leakage at the stepped portion is large. In addition, there is a problem that the stress is concentrated due to the stress concentrated at the base of the stepped portion.

  The present invention has been made in view of such circumstances, and is used for a scroll fluid machine capable of realizing three-dimensional compression or three-dimensional expansion without using a stepped portion such as a stepped scroll fluid machine. An object is to provide a scroll member.

In order to solve the above problems, the scroll fluid machine of the present invention and the scroll member used therein employ the following means.
That is, the scroll fluid machine according to the present invention includes a first scroll member in which a spiral first wall body is provided on a first end plate, and a second end plate disposed so as to face the first end plate. A scroll fluid machine comprising a second scroll member provided with a spiral second wall body, the second wall body meshing with the first wall body and performing a revolving orbiting motion relatively. There is an inclined portion in which the distance between the opposing surfaces of the first end plate and the second end plate facing each other continuously decreases from the outer peripheral side to the inner peripheral side of the first wall body and the second wall body. It is provided.

Since the inclined portion in which the distance between the opposing surfaces of the first end plate and the second end plate continuously decreases from the outer peripheral side to the inner peripheral side of the wall body is provided, the fluid sucked from the outer peripheral side is As it goes to the inner peripheral side, it is compressed not only by the reduction of the compression chamber according to the spiral shape of the wall body, but also by the reduction of the distance between the opposing surfaces between the end plates. As a result, three-dimensional compression is possible, and downsizing can be realized.
Furthermore, the inclined portion is continuously reduced, and fluid leakage can be reduced as compared with a conventional scroll fluid machine with a step provided on the wall body and the tooth bottom.
The continuous inclined part is not limited to the smoothly connected inclined part, but a small step is connected in a staircase shape, and the inclined part as a whole is continuously inclined. included.

  Furthermore, according to the scroll fluid machine of the present invention, at least one of the first wall body and the second wall body is formed from the outer peripheral side toward the inner peripheral side so as to form the inclined portion. A wall slope portion that continuously decreases in height, and at least one of the first end plate and the second end plate has a tooth bottom surface that faces a tooth tip of the wall slope portion. It has the end-plate inclination part which inclines according to the inclination of a wall body inclination part, It is characterized by the above-mentioned.

Wall body inclined portion in which the height of the wall body decreases from the outer peripheral side toward the inner peripheral side, and an end plate in which the tooth bottom surface facing the tooth tip of this wall body inclined portion is inclined according to the inclination of the wall inclined portion By providing the inclined portion, it is possible to form an inclined portion in which the distance between the opposing surfaces between the end plates decreases from the outer peripheral side toward the inner peripheral side.
The wall body inclined portion and the end plate inclined portion may be provided on both sides of the first scroll and the second scroll, or may be provided on either one of them. When a wall body inclined portion is provided on one wall body and an end plate inclined portion is provided on the other end plate, the other wall body and one end plate may be flat, or a conventional stepped shape and A combined shape may be used.

  Furthermore, according to the scroll fluid machine of the present invention, the tip seals of the first wall body and the second wall body corresponding to the inclined portion are provided with tip seals that contact the opposing tooth bottom and seal the fluid. It is characterized by being.

  In the inclined portion, when both scroll members relatively revolve, the positions of the tooth tip and the tooth bottom are shifted by the turning diameter (turning radius × 2). The gap (tip clearance) between the tooth tip and the tooth bottom changes due to the positional deviation between the tooth tip and the tooth bottom. In order to suppress fluid leakage due to the influence of the change in the tip clearance, a tip seal is provided at the tooth tip of each wall body corresponding to the inclined portion.

  Furthermore, according to the scroll fluid machine of the present invention, the tooth tip and / or the tooth bottom of the wall body constituting the inclined portion is coated.

  By coating the tooth tips and / or the tooth bottoms of the wall body constituting the inclined portion, it is possible to compensate for the processing variation of the inclined portion, which is difficult to obtain processing accuracy, with the coating film thickness. Thereby, fluid leakage can be suppressed.

Furthermore, according to the scroll fluid machine of the present invention, the wall flattened wherein the beauty innermost portion Oyo least one of the outermost peripheral portion of the first wall and the second wall, which does not change the height At least one of the first end plate and the second end plate is provided with an end plate flat portion corresponding to the wall body flat portion, and the length of the wall body inclined portion in the spiral direction is provided. Is longer than the length of the wall body flat part of the outermost peripheral part in the spiral direction and longer than the length of the wall inner flat part of the wall body flat part of the spiral direction, The length in the spiral direction is longer than the length in the spiral direction of the end plate flat portion of the outermost peripheral portion and longer than the length of the end plate flat portion of the innermost peripheral portion in the spiral direction. And

  If the tooth tips of the wall body are inclined, it is difficult to set measurement points and to increase measurement accuracy. Therefore, a flat portion is provided on the outermost peripheral portion and / or the innermost peripheral portion of the wall body and the end plate, and the shape measurement is performed with high accuracy. This facilitates scroll-shaped dimension management and chip clearance management.

Furthermore, according to the scroll fluid machine of the present invention, the wall body flat part and the end plate flat part are provided over a region of 180 ° or more around the center of the scroll member.

By providing the wall body flat part and the end plate flat part over a region of 180 ° or more , measurement can be performed at the flat parts on both sides of the center of the scroll member. Thereby, the shape dimension of a scroll member can be performed suitably.
Further, if the range of the flat portion greatly exceeds 180 °, the region of the inclined portion is reduced and the inclination of the inclined portion is increased. When the inclination becomes large, the amount of change in the tip clearance due to the turning diameter during the revolving turning motion becomes large, and there is a possibility that the fluid leakage becomes large. Therefore, it is preferable that the wall body flat portion and the end plate flat portion are in a region of 180 °. However, 180 ° is not a strict one, and an angle slightly exceeding 180 ° is allowed within a range where fluid leakage does not increase.

  Furthermore, according to the scroll fluid machine of the present invention, the inclination of the inclined portion is constant with respect to the circumferential direction in which the spiral wall body extends.

  The inclination of the inclined portion is made constant with respect to the circumferential direction in which the spiral wall extends. Thereby, the tip clearance resulting from the turning diameter during the revolving turning motion can be made equal at each position of the inclined portion, and fluid leakage can be suppressed.

  Furthermore, according to the scroll fluid machine of the present invention, the inclination of the inclined portion is set larger on the outer peripheral side than on the inner peripheral side with respect to the circumferential direction in which the spiral wall extends. And

  Since the inner circumferential side has a larger pressure difference than the outer circumferential side, fluid leakage is larger than that on the outer circumferential side. Since the pressure difference is smaller on the outer peripheral side than on the inner peripheral side, the influence of fluid leakage is low. Therefore, the inclination of the inclined portion is set larger on the outer peripheral side than the inner peripheral side with respect to the circumferential direction in which the spiral wall extends, and the inner peripheral side is kept to the minimum necessary for fluid leakage on the outer peripheral side. The fluid leakage was suppressed. Thereby, the volume ratio can be increased and the displacement amount can be increased.

The scroll member according to the present invention is a scroll member used in a scroll fluid machine including an end plate and a spiral wall provided on the end plate, and the wall is formed from the outer peripheral side. The wall body has an inclined portion in which the height of the wall body continuously decreases toward the inner peripheral side, and the end plate has an inner periphery from the outer peripheral side in accordance with a decrease in the height of the wall inclined portion. have a end plate inclined portion height of the end plate toward the side increases continuously, the outermost peripheral portion and innermost peripheral portion of the wall body, wall flat portion provided that the height does not change The end plate is provided with an end plate flat portion corresponding to the wall flat portion, and extends from the wall flat portion of the outermost peripheral portion to the wall flat portion of the innermost peripheral portion. The wall body inclined portion in which the height of the wall body continuously decreases from the outer peripheral side toward the inner peripheral side, and the end plate flat of the outermost peripheral portion is provided. The end plate inclined portion in which the tooth bottom surface facing the tooth tip of the wall inclined portion inclines in accordance with the inclination of the wall inclined portion from the portion to the end plate flat portion of the innermost peripheral portion. Provided, and the length of the wall body inclined part in the spiral direction is longer than the length of the wall body flat part of the outermost peripheral part in the spiral direction, and the spiral of the wall body flat part of the innermost peripheral part is provided. Longer than the length in the direction, the length in the spiral direction of the end plate inclined portion is longer than the length in the spiral direction of the flat end portion of the outermost peripheral portion, and the end plate in the innermost peripheral portion It is characterized by being longer than the length of the flat portion in the spiral direction .

  By using a scroll member having a wall body inclined portion and an end plate inclined portion, it is possible to constitute a scroll fluid machine in which the distance between the opposing surfaces between the end plates continuously decreases from the outer peripheral side toward the inner peripheral side. it can.

  Since the inclined portion in which the distance between the facing surfaces between the end plates continuously decreases from the outer peripheral side to the inner peripheral side of the wall body, three-dimensional compression or three-dimensional expansion is possible. Furthermore, since the inclined portion is continuously reduced and the stepped scroll fluid machine is not provided with a stepped portion, fluid leakage can be reduced and the strength of the wall body can be reduced. Absent.

The fixed scroll and the turning scroll of the scroll compressor concerning one Embodiment of this invention are shown, (a) is a longitudinal cross-sectional view, (b) is the top view seen from the wall body side of the fixed scroll. It is the perspective view which showed the turning scroll of FIG. It is the top view which showed the end plate flat part provided in the fixed scroll. It is the top view which showed the wall body flat part provided in the fixed scroll. It is a schematic diagram which shows the wall body extended and displayed in the spiral direction. It is the elements on larger scale which expanded and showed the field of the code Z of Drawing 1 (b). 6 shows the tip seal gap in the portion shown in FIG. 6, (a) is a side view showing a state where the tip seal gap is relatively small, and (b) shows a state where the tip seal gap is relatively large. It is a side view. It is the schematic diagram which showed the modification of FIG. The modification of one Embodiment is shown, (a) is a longitudinal cross-sectional view which shows the combination with the scroll which does not have a step part, (b) is a longitudinal cross-sectional view which showed the combination with a stepped scroll .

Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 shows a fixed scroll (first scroll member) 3 and a turning scroll (second scroll member) 5 of a scroll compressor (scroll fluid machine) 1. The scroll compressor 1 is used as a compressor that compresses a gas refrigerant (fluid) that performs a refrigeration cycle such as an air conditioner.

  The fixed scroll 3 and the orbiting scroll 5 are made of a metal compression mechanism made of aluminum alloy or iron, and are housed in a housing (not shown). The fixed scroll 3 and the orbiting scroll 5 suck the fluid guided into the housing from the outer peripheral side, and discharge the compressed fluid from the central discharge port 3c of the fixed scroll 3 to the outside.

  The fixed scroll 3 is fixed to the housing and, as shown in FIG. 1A, stands on a substantially disc-shaped end plate (first end plate) 3a and one side surface of the end plate 3a. And a spiral wall body (first wall body) 3b. The orbiting scroll 5 includes a substantially disc-shaped end plate (second end plate) 5a and a spiral wall body (second wall body) 5b erected on one side surface of the end plate 5a. . The spiral shape of each wall 3b, 5b is defined using, for example, an involute curve or an Archimedean curve.

  The fixed scroll 3 and the orbiting scroll 5 are meshed with their centers separated by an orbiting radius ρ, with the phases of the wall bodies 3b and 5b shifted by 180 °, and between the tooth tips and the tooth bottoms of the wall bodies 3b and 5b of both scrolls. It is assembled so as to have a slight clearance in the height direction (chip clearance). Thus, a plurality of pairs of compression chambers formed between the scrolls 3 and 5 and surrounded by the end plates 3a and 5a and the walls 3b and 5b are formed symmetrically with respect to the scroll center. The orbiting scroll 5 revolves around the fixed scroll 3 by a rotation prevention mechanism such as an Oldham ring (not shown).

  As shown in FIG. 1 (a), the distance L between the facing surfaces 3a and 5a facing each other is continuously decreased from the outer peripheral side to the inner peripheral side of the spiral wall bodies 3b and 5b. Is provided.

  As shown in FIG. 2, the wall body 5b of the orbiting scroll 5 is provided with a wall body inclined portion 5b1 whose height continuously decreases from the outer peripheral side toward the inner peripheral side. An end plate inclined portion 3a1 (see FIG. 1 (a)) that is inclined according to the inclination of the wall body inclined portion 5b1 is provided on the tooth bottom surface of the fixed scroll 3 where the tooth tips of the wall body inclined portion 5b1 face each other. Yes. These wall body inclination part 5b1 and end plate inclination part 3a1 comprise the continuous inclination part. Similarly, the wall body 3b of the fixed scroll 3 is also provided with a wall body inclined portion 3b1 whose height is continuously inclined from the outer peripheral side toward the inner peripheral side, and faces the tooth tip of the wall body inclined portion 3b1. An end plate inclined portion 5 a 1 is provided on the end plate 5 a of the orbiting scroll 5.

  Note that the meaning of “continuous in the inclined portion” in the present embodiment is not limited to the smoothly connected inclination, and small steps that are inevitably generated at the time of processing are connected in a staircase shape. If the part as a whole is included, it is continuously inclined. However, large steps such as so-called stepped scrolls are not included.

  The wall body inclined portions 3b1 and 5b1 and / or the end plate inclined portions 3a1 and 5a1 are coated. Examples of the coating include manganese phosphate treatment and nickel phosphorus plating.

As shown in FIG. 2, wall body flat portions 5b2 and 5b3 having a constant height are provided on the innermost circumferential side and the outermost circumferential side of the wall body 5b of the orbiting scroll 5, respectively. . These wall flat portions 5b2 and 5b3 are provided over a region of 180 ° around the center O2 (see FIG. 1A) of the orbiting scroll 5. Wall body inclined connection portions 5b4 and 5b5 serving as bent portions are respectively provided at positions where the wall body flat portions 5b2 and 5b3 and the wall body inclined portion 5b1 are connected.
Similarly, the bottom of the end plate 5a of the orbiting scroll 5 is provided with flat end plates 5a2 and 5a3 having a constant height. These end plate flat portions 5 a 2 and 5 a 3 are also provided over a 180 ° region around the center of the orbiting scroll 5. At the positions where the end plate flat portions 5a2 and 5a3 and the end plate inclined portion 5a1 are connected, end plate inclined connecting portions 5a4 and 5a5 serving as bent portions are provided, respectively.

  As shown by hatching in FIGS. 3 and 4, the fixed scroll 3 also has the end plate flat portions 3a2 and 3a3, the wall body flat portions 3b2 and 3b3, and the end plate inclined connection portions 3a4 and 3a5 in the same manner as the orbiting scroll 5. And wall body inclination connection part 3b4, 3b5 is provided.

FIG. 5 shows wall bodies 3b and 5b displayed in a spiral direction. As shown in the figure, the innermost wall flat portions 3b2 and 5b2 are provided over a distance D2, and the outermost wall flat portions 3b3 and 5b3 are provided over a distance D3. The distance D2 and the distance D3 are lengths corresponding to the regions 180 degrees around the centers O1 and O2 of the scrolls 3 and 5, respectively. Between the wall flats 3b3,5b3 of innermost wall flats 3b2,5b2 and the outermost side of the wall member inclined portion 3b1,5b1 are provided over a distance D 1. If the height difference between the innermost wall flat portions 3b2 and 5b2 and the outermost wall flat portions 3b3 and 5b3 is h, the inclination φ of the wall inclined portions 3b1 and 5b1 is given by the following equation.
φ = tan ^-1 (h / D1) (1)
Thus, the inclination φ in the inclined portion is constant with respect to the circumferential direction in which the spiral wall bodies 3b and 5b extend.

  FIG. 6 shows an enlarged view of the region indicated by the symbol Z in FIG. As shown in FIG. 6, a tip seal 7 is provided on the tooth tip of the wall 3 b of the fixed scroll 3. The tip seal 7 is made of resin and seals the fluid by contacting the tooth bottom of the end plate 5a of the orbiting scroll 5 facing the tip seal 7. The tip seal 7 is accommodated in a tip seal groove 3d formed in the tooth tip of the wall 3b over the circumferential direction. The compressed fluid enters the tip seal groove 3d, and the tip seal 7 is pressed from the back and pushed out toward the bottom of the tooth to be brought into contact with the opposing tooth bottom. A tip seal is similarly provided on the tooth tip of the wall 5b of the orbiting scroll 5.

  When the scrolls 3 and 5 relatively revolve, the positions of the tooth tip and the tooth bottom are relatively shifted by the turning diameter (turning radius ρ × 2). Due to the positional deviation between the tooth tip and the tooth bottom, the tip clearance between the tooth tip and the tooth bottom changes in the inclined portion. For example, FIG. 7A shows that the tip clearance T is small, and FIG. 7B shows that the tip clearance T is large. Even if the tip clearance T changes due to the swiveling motion, the tip seal 7 is pressed against the tooth bottom side of the end plate 5a by the compressed fluid from the back surface, so that it can be followed and sealed.

The scroll compressor 1 described above operates as follows.
The orbiting scroll 5 performs a revolving orbiting motion around the fixed scroll 3 by a driving source such as an electric motor (not shown). Thereby, the fluid is sucked from the outer peripheral side of the scrolls 3 and 5, and the fluid is taken into the compression chambers surrounded by the walls 3b and 5b and the end plates 3a and 5a. The fluid in the compression chamber is sequentially compressed as it moves from the outer peripheral side to the inner peripheral side, and finally the compressed fluid is discharged from the discharge port 3 c formed in the fixed scroll 3. When the fluid is compressed, the inclined portions formed by the end plate inclined portions 3a1 and 5a1 and the wall body inclined portions 3b1 and 5b1 are also compressed in the height direction of the wall bodies 3b and 5b, and three-dimensional compression is performed. Is called.

As mentioned above, according to the scroll compressor 1 of this embodiment, there exist the following effects.
Since the inclined portion in which the distance L between the opposing surfaces between the end plates 3a and 5a continuously decreases from the outer peripheral side to the inner peripheral side of the wall bodies 3b and 5b is provided, three-dimensional compression is possible, and the small size Can be realized.
Furthermore, the inclined portion is continuously reduced, and fluid leakage can be reduced as compared with a conventional scroll fluid machine with a step provided on the wall body and the tooth bottom.

  Since the tip seals 7 are provided at the tooth tips of the wall bodies 3b and 5b, even if the tip clearance T (see FIG. 7) between the tooth tips and the tooth bottom in the inclined portion changes according to the turning motion. The chip seal 7 can be made to follow, and fluid leakage can be suppressed.

  The wall body inclined portions 3b1 and 5b1 and / or the end plate inclined portions 3a1 and 5a1 constituting the inclined portion are coated. As a result, it is possible to compensate for the machining variation of the inclined portion where it is difficult to obtain machining accuracy with the film thickness of the coating, and to further suppress fluid leakage.

  The wall bodies 3b, 5b and the end plates 3a, 5a are provided with wall body flat portions 3b2, 3b3, 5b2, 5b3 and end plate flat portions 3a2, 3a3, 5a2, 5a3 on the outermost and innermost peripheral portions. Thereby, when the tooth tip of the wall body is inclined, it is difficult to set measurement points and it is difficult to increase measurement accuracy, and shape measurement can be performed with high accuracy. In addition, it becomes easy to manage the dimensions of the scroll shape and the chip clearance.

By providing the wall flat portions 3b2, 3b3, 5b2, 5b3 and the end plate flat portions 3a2, 3a3, 5a2, 5a3 over a region of 180 °, the flat portions on both sides sandwiching the centers 01, 02 of the scrolls 3, 5 Measurements can be made. Thereby, the shape dimension of a scroll member can be performed suitably.
Further, if the range of the flat portion greatly exceeds 180 °, the region of the inclined portion is reduced and the inclination φ of the inclined portion is increased. When the inclination φ increases, the amount of change in the tip clearance T due to the turning diameter during the revolving turning motion increases, and there is a risk that fluid leakage will increase. Accordingly, the wall body flat portions 3b2, 3b3, 5b2, 5b3 and the end plate flat portions 3a2, 3a3, 5a2, 5a3 are defined as 180 ° regions. However, this 180 ° is not strict, and an angle slightly exceeding 180 ° (for example, about 30 °) is allowed within a range where fluid leakage does not increase.

  The inclination φ of the inclined portion is made constant with respect to the circumferential direction in which the spiral wall bodies 3b and 5b extend. Thereby, the tip clearance T resulting from the turning diameter during the revolution turning motion can be made equal at each position of the inclined portion, and fluid leakage can be suppressed.

The present embodiment can be modified as follows.
As shown in FIG. 8, the inclination φ of the inclined portion is set so that the inclination φ2 on the outer peripheral side is larger than the inclination φ1 on the inner peripheral side with respect to the circumferential direction in which the spiral wall bodies 3b and 5b extend. You may do it. As a result, it is possible to suppress the fluid leakage on the inner peripheral side where the fluid pressure difference is larger than that on the outer peripheral side while suppressing the fluid leakage on the outer peripheral side where the fluid pressure difference is smaller than that on the inner peripheral side. it can. Thereby, the volume ratio can be increased and the displacement amount can be increased.
Further, instead of changing the slope φ stepwise as shown in FIG. 8, the slope φ may be continuously increased from the inner circumference side toward the outer circumference side.

In the present embodiment, the end plate inclined portions 3a1 and 5a1 and the wall inclined portions 3b1 and 5b1 are provided on both scrolls 3 and 5, but may be provided on either one of them.
Specifically, as shown in FIG. 9A, when one wall body (for example, the orbiting scroll 5) is provided with a wall inclined portion 5b1, and the other end plate 3a is provided with an end plate inclined portion 3a1. The other wall body and the one end plate 5a may be flat.
Further, as shown in FIG. 9B, the shape combined with the conventional stepped shape, that is, the end plate inclined portion 3a1 is provided on the end plate 3a of the fixed scroll 3, while the end plate 5a of the orbiting scroll 5 is provided on the end plate 5a. You may combine with the shape in which the step part was provided.

  In the present embodiment, the wall flat portions 3b2, 3b3, 5b2, 5b3 and the end plate flat portions 3a2, 3a3, 5a2, 5a3 are provided, but the inner peripheral side and / or the outer peripheral side flat portions are omitted. You may make it provide an inclination part extended in the whole wall bodies 3b and 5b.

  Moreover, although this embodiment demonstrated as a scroll compressor, this invention is applicable also to the scroll expander used as an expander.

1 Scroll compressor (scroll fluid machine)
3 Fixed scroll (first scroll member)
3a End plate (first end plate)
3a1 End plate inclined part 3a2 End plate flat part (inner peripheral side)
3a3 Flat end plate (outside)
3a4 End plate inclined connection (inner circumference side)
3a5 End plate inclined connection (outer side)
3b Wall (first wall)
3b1 Wall body inclined part 3b2 Wall body flat part (inner circumference side)
3b3 Wall flat part (outside)
3b4 Wall inclined connection (inner circumference side)
3b5 Inclined wall connection (outside)
3c Discharge port 3d Tip seal groove 5 Orbiting scroll (second scroll member)
5a End plate (second end plate)
5a1 End plate inclined part 5a2 End plate flat part (inner peripheral side)
5a3 Flat end plate (outside)
5b Wall body (second wall body)
5b1 Wall body inclined part 5b2 Wall body flat part (inner circumference side)
5b3 Wall flat part (outside)
5b4 Wall body inclined connection (inner circumference side)
5b5 Wall body inclined connection (outside)
7 Tip seal L Distance between opposing surfaces T Tip clearance φ Inclination

Claims (7)

A first scroll member provided with a spiral first wall on the first end plate;
A spiral second wall body is provided on a second end plate disposed so as to face the first end plate, and the second wall body meshes with the first wall body to relatively rotate and revolve. A second scroll member to perform;
A scroll fluid machine comprising:
There is an inclined portion in which the distance between the opposing surfaces of the first end plate and the second end plate facing each other continuously decreases from the outer peripheral side to the inner peripheral side of the first wall body and the second wall body. Provided ,
The outermost peripheral part and the innermost peripheral part of at least one of the first wall body and the second wall body are provided with a wall body flat part whose height does not change,
At least one of the first end plate and the second end plate is provided with an end plate flat portion corresponding to the wall body flat portion,
The height of the wall body from the outer peripheral side toward the inner peripheral side so as to form the inclined portion between the wall body flat part of the outermost peripheral part and the wall flat part of the innermost peripheral part. Is provided with a wall slope portion that continuously decreases,
The tooth bottom surface that faces the tooth tip of the wall inclined portion extends from the end plate flat portion of the outermost peripheral portion to the end plate flat portion of the innermost peripheral portion according to the inclination of the wall inclined portion. End plate inclined part is provided,
The length of the wall body inclined portion in the spiral direction is longer than the length of the wall body flat portion in the outermost peripheral portion in the spiral direction, and the length in the spiral direction of the wall flat portion in the innermost peripheral portion. Longer than
The length of the end plate inclined portion in the spiral direction is longer than the length of the end plate flat portion of the outermost peripheral portion in the spiral direction, and the length of the end plate flat portion of the innermost peripheral portion in the spiral direction. A scroll fluid machine characterized by being longer than the above . Wherein the tooth tip of the first wall and the second wall corresponding to the inclined portion, claim, characterized in that the tip seal for sealing the fluid in contact with the opposing tooth bottom is provided 1 scroll fluid machine according to. The scroll fluid machine according to claim 1 or 2 , wherein a coating is applied to a tooth tip and / or a tooth bottom of the wall body constituting the inclined portion. The wall flat portion and the end plate plateau scroll fluid machine according to any of claims 1 3, characterized in that provided over 180 ° or more areas around the center of the scroll member. The inclination of the inclined portion, the scroll fluid machine according to any one of claims 1 to 4, characterized in that the spiral of the wall is constant with respect to extending circumferentially. The inclination of the inclined portion, according to any of the circumferential direction of the spiral of the wall extends, the outer peripheral side than the inner circumferential side is set larger from claim 1, wherein the fourth Scroll fluid machine. A scroll member used in a scroll fluid machine including an end plate and a spiral wall provided on the end plate,
The wall body has a wall body inclined portion in which the height of the wall body continuously decreases from the outer peripheral side toward the inner peripheral side,
Said end plate in response to a decrease in the height of the wall inclined portion, it has a end plate inclined portion height of the end plate toward the inner peripheral side from the outer peripheral side increases continuously,
The outermost peripheral portion and the innermost peripheral portion of the wall body are provided with a wall body flat portion whose height does not change,
The end plate is provided with an end plate flat portion corresponding to the wall body flat portion,
The wall in which the height of the wall body continuously decreases from the outer peripheral side toward the inner peripheral side between the wall body flat part of the outermost peripheral part and the wall flat part of the innermost peripheral part. A body slant is provided,
The tooth bottom surface that faces the tooth tip of the wall inclined portion extends from the end plate flat portion of the outermost peripheral portion to the end plate flat portion of the innermost peripheral portion according to the inclination of the wall inclined portion. The end plate inclined portion that is inclined
The length of the wall body inclined portion in the spiral direction is longer than the length of the wall body flat portion in the outermost peripheral portion in the spiral direction, and the length in the spiral direction of the wall flat portion in the innermost peripheral portion. Longer than
The length of the end plate inclined portion in the spiral direction is longer than the length of the end plate flat portion of the outermost peripheral portion in the spiral direction, and the length of the end plate flat portion of the innermost peripheral portion in the spiral direction. The scroll member characterized by being longer than this .

Images