阅读说明：本技术 涡旋式流体机械 (Scroll fluid machine ) 是由 小林义雄 坂本晋 渡边翔 于 2017-05-15 设计创作，主要内容包括：本发明提供降低底板的移动引起的涡旋状的卷体等的损伤,并能够实现高寿命化的涡旋式流体机械。本发明的涡旋式流体机械包括：在端板的齿底面设置有涡旋状的卷体部的固定涡旋件；和与所述固定涡旋件相对地设置的旋转涡旋件,其在端板的齿底面上设置有涡旋状的卷体部,该卷体部与所述固定涡旋件的卷体部之间形成多个压缩室,在所述旋转涡旋件和所述固定涡旋件的卷体部中的至少一个卷体部上形成有沿着所述卷体部的齿顶延伸的凹槽,在所述凹槽内安装有与相对的涡旋件的齿底面滑动接触的密封部件,在与所述密封部件相对的齿底面配设有耐磨损的板状部件,所述板状部件与配设有所述板状部件的所述涡旋状的卷体部在涡旋的卷绕方向上具有规定的间隙,所述涡旋件的涡旋状的卷体部的内线侧或外线侧与所述板状部件的侧面接触而停止转动,使得所述板状部件与所述涡旋状的卷体部在涡旋的卷绕方向上不接触。(The invention provides a scroll fluid machine which can reduce damage of a scroll wrap and the like caused by movement of a base plate and can realize long service life. The scroll fluid machine of the present invention includes: a fixed scroll having a spiral wrap portion on a tooth bottom surface of an end plate; and an orbiting scroll provided to face the fixed scroll, the orbiting scroll having a spiral wrap portion provided on a tooth bottom surface of an end plate, a plurality of compression chambers are formed between the lap and the lap of the fixed scroll, a groove extending along a tooth crest of the lap is formed on at least one lap of the orbiting scroll and the fixed scroll, a seal member which is in sliding contact with a bottom land of the scroll member facing the recess is mounted in the recess, and a wear-resistant plate-like member is disposed on the bottom land facing the seal member, the plate-like member and the spiral wrap portion on which the plate-like member is disposed have a predetermined gap in a winding direction of a spiral, the inner line side or the outer line side of the spiral wrap of the scroll contacts with the side surface of the plate-like member and stops rotating, so that the plate-like member does not contact the spiral wrap portion in the winding direction of the spiral.)

1. A scroll fluid machine, comprising:

a fixed scroll having a spiral wrap portion on a tooth bottom surface of an end plate; and

an orbiting scroll disposed to face the fixed scroll, the orbiting scroll having a spiral wrap on a bottom land of an end plate, the wrap and the wrap of the fixed scroll forming a plurality of compression chambers therebetween,

a groove extending along a tooth crest of the lap is formed in at least one lap of the orbiting scroll and the fixed scroll, a seal member in sliding contact with a tooth bottom surface of the opposite scroll is mounted in the groove, a wear-resistant plate-like member is disposed on the tooth bottom surface opposite to the seal member,

the plate-like member and the spiral wrap portion on which the plate-like member is disposed have a predetermined gap in a winding direction of a spiral,

the inner line side or the outer line side of the spiral wrap of the scroll is in contact with the side surface of the plate-like member and stops rotating, so that the plate-like member and the spiral wrap do not contact each other in the winding direction of the scroll.

2. The scroll fluid machine of claim 1, wherein:

the plate-like member has a substantially constant gap in a radial direction from the spiral wrap of the scroll.

3. The scroll fluid machine of claim 2, wherein:

even when the plate-like member moves in the rotational direction in the radial gap between the plate-like member and the winding body and the radial gap disappears, the gap between the plate-like member and the winding start portion and the winding end portion of the winding body in the winding direction of the scroll can be secured.

4. The scroll fluid machine of claim 1, wherein:

the plate-like member and a spiral wrap portion of the orbiting scroll on which the plate-like member is disposed have a predetermined gap in a winding direction of a spiral,

when the scroll fluid machine is normally operated and rotated in the normal direction, the inner line side of the spiral wrap of the orbiting scroll is brought into contact with the side surface of the plate-like member and stops rotating, so that the plate-like member and the spiral wrap do not come into contact with each other in the winding direction of the scroll.

5. The scroll fluid machine of claim 4, wherein:

when the scroll-type fluid machine is reversed, the outer line side of the spiral wrap of the orbiting scroll comes into contact with the side surface of the plate-like member and stops rotating, so that the plate-like member and the spiral wrap do not come into contact with each other in the winding direction of the spiral.

6. The scroll fluid machine of claim 1, wherein:

the plate-like member and the spiral wrap of the fixed scroll on which the plate-like member is disposed have a predetermined gap in a winding direction of a spiral,

the inner line side or the outer line side of the spiral wrap of the fixed scroll is in contact with the side surface of the plate-like member and stops rotating, so that the plate-like member and the spiral wrap do not contact with each other in the winding direction of the spiral.

7. A scroll fluid machine, comprising:

a fixed scroll having a spiral wrap portion on a tooth bottom surface of an end plate; and

an orbiting scroll disposed to face the fixed scroll, the orbiting scroll having a spiral wrap on a bottom land of an end plate, the wrap and the wrap of the fixed scroll forming a plurality of compression chambers therebetween,

a groove extending along a tooth crest of the lap is formed in at least one lap of the orbiting scroll and the fixed scroll, a seal member in sliding contact with a tooth bottom surface of the opposite scroll is mounted in the groove, a wear-resistant plate-like member is disposed on the tooth bottom surface opposite to the seal member,

the plate-like member is fixed to the fixed scroll or the orbiting scroll by a screw.

8. The scroll fluid machine of claim 7, wherein:

the plate-like member is fixed in the suction chamber by screws.

9. The scroll fluid machine of claim 8, wherein:

the plate-like member is fixed to a portion of the winding body where the winding body does not pass by using a screw.

10. The scroll fluid machine of claim 7, wherein:

the plate-like member on the fixed scroll side is fixed to the fixed scroll by a screw near a winding end of an inner line of the lap of the fixed scroll.

11. The scroll fluid machine of claim 7, wherein:

the plate-like member on the orbiting scroll side is fixed to the orbiting scroll by a screw near a winding end of an inner line of the lap of the fixed scroll.

12. The scroll fluid machine of claim 7, wherein:

the plate-like member on the orbiting scroll side is fixed to the orbiting scroll by a screw in a discharge chamber.

13. The scroll fluid machine according to any one of claims 1 to 12, wherein:

a size adjustment member having the same thickness as the plate-like member is disposed on a mating surface between the housing and the fixed scroll together with the plate-like member.

Technical Field

The present invention relates to a scroll-type fluid machine suitable for use in, for example, an air compressor and a vacuum pump.

Background

Patent document 1 describes "a scroll compressor including: a fixed scroll member for fixing the scroll wrap is provided upright on one surface of the fixed end plate; an orbiting scroll member in which an orbiting scroll wrap is erected on one surface of an orbiting end plate, and which is combined to form a compression chamber so as to be rotationally driven while being prevented from rotating on its axis with respect to the fixed scroll member; and a sheet seal member fitted into a sheet seal groove provided in a tip end surface of each of the fixed scroll wrap and the orbiting scroll wrap, wherein a bottom plate in sliding contact with the sheet seal member is provided on a tooth bottom surface of the scroll wrap of either or both of the fixed scroll wrap and the orbiting scroll wrap in the scroll compressor, and a support member having a lower melting point than the sheet seal member is provided on a back surface side of the bottom plate. "(claim 6).

Patent document 2 discloses "a scroll fluid machine in which a fixed scroll and a movable scroll, each having a wrap formed of a spiral curve formed integrally with a first end plate, are caused to mesh with each other so that the wrap is inside and the movable scroll is caused to orbit with respect to the fixed scroll, wherein a through hole having a spiral curve formed in the same shape as the wrap of the two scrolls or one of the scrolls is provided, a second end plate formed of a metallic rigid body having a higher surface accuracy than the first end plate is disposed on the first end plate, and the chamfer of the corner of the second end plate surface on the side in contact with the first end plate is larger than the chamfer of the corner of the opposing surface of the opposing wrap. "(scope of claims).

Disclosure of Invention

Technical problem to be solved by the invention

Patent documents 1 and 2 describe scroll compressors in which a bottom plate to which a sheet-like seal member is brought into sliding contact is provided on a tooth bottom surface of a spiral wrap of either or both of a fixed scroll and an orbiting scroll. However, in patent document 1 or patent document 2, it is not considered that the spiral wrap and the sheet seal member are damaged by the movement of the base plate.

Accordingly, an object of the present invention is to provide a scroll-type fluid machine capable of reducing damage to a spiral wrap or the like caused by movement of a base plate and achieving a longer service life.

Means for solving the problems

An example of a scroll fluid machine according to the present invention for solving the above-described problems is a scroll fluid machine including: a fixed scroll having a spiral wrap portion on a tooth bottom surface of an end plate; and an orbiting scroll provided to face the fixed scroll, the orbiting scroll having a spiral wrap portion provided on a tooth bottom surface of an end plate, a plurality of compression chambers are formed between the lap and the lap of the fixed scroll, a groove extending along a tooth crest of the lap is formed on at least one lap of the orbiting scroll and the fixed scroll, a seal member which is in sliding contact with a bottom land of the scroll member facing the recess is mounted in the recess, and a wear-resistant plate-like member is disposed on the bottom land facing the seal member, the plate-like member and the spiral wrap portion on which the plate-like member is disposed have a predetermined gap in a winding direction of a spiral, the inner line side or the outer line side of the spiral wrap of the scroll contacts with the side surface of the plate-like member and stops rotating, so that the plate-like member does not contact the spiral wrap portion in the winding direction of the spiral.

Another example of a scroll fluid machine according to the present invention is a scroll fluid machine including: a fixed scroll having a spiral wrap portion on a tooth bottom surface of an end plate; and an orbiting scroll disposed to face the fixed scroll, wherein a spiral wrap is provided on a land of an end plate, a plurality of compression chambers are formed between the wrap and the wrap of the fixed scroll, a groove extending along a tooth crest of the wrap is formed in at least one of the orbiting scroll and the wrap of the fixed scroll, a seal member slidably contacting the land of the facing scroll is mounted in the groove, and a wear-resistant plate-like member is disposed on the land facing the seal member, and the plate-like member is fixed to the fixed scroll or the orbiting scroll by a screw.

Effects of the invention

According to the present invention, damage to a spiral wrap or the like caused by movement of a base plate can be reduced in a scroll fluid machine, and a longer life can be achieved.

Drawings

Fig. 1 is a longitudinal sectional view showing a scroll air compressor according to embodiment 1 of the present invention.

Fig. 2 is a developed perspective view showing a scroll type air compressor according to embodiment 1 of the present invention.

Fig. 3 is a partial enlarged view of the vicinity of the leaf seal of fig. 1.

Fig. 4 is a view showing the sheet-like sealing member of fig. 3.

Fig. 5 is a partial enlarged view in the Y-Y direction of fig. 1.

Fig. 6 is a cross-sectional view in the Y-Y direction of fig. 1.

Fig. 7 is a diagram showing the relationship between the base plate and the wrap when the orbiting scroll of embodiment 1 rotates forward.

Fig. 8 is a diagram showing the relationship between the base plate and the wrap when the orbiting scroll of embodiment 1 is reversed.

Fig. 9 is a diagram showing the fixing position of the base plate in embodiment 2 of the present invention.

Fig. 10 is a diagram showing another fixing position of the base plate in embodiment 2 of the present invention.

Fig. 11 is a diagram showing a positional relationship between the bottom plate and the sheet-like sealing member.

Fig. 12 is a diagram showing a positional relationship between the bottom plate and the sheet-like sealing member in example 3.

Fig. 13 is a diagram showing another positional relationship between the bottom plate and the sheet-like sealing member for comparison.

Fig. 14 is a developed perspective view showing a scroll type air compressor according to embodiment 4 of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals are assigned to the components common to the respective drawings as much as possible, and redundant description thereof will be omitted.