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CN107542663B - Vortex plate and vortex compressor with same - Google Patents

Vortex plate and vortex compressor with same Download PDF

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Publication number
CN107542663B
CN107542663B CN201610468205.1A CN201610468205A CN107542663B CN 107542663 B CN107542663 B CN 107542663B CN 201610468205 A CN201610468205 A CN 201610468205A CN 107542663 B CN107542663 B CN 107542663B
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tooth
section
vortex plate
scroll
compression section
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CN107542663A (en
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魏亮
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Abstract

The invention provides a vortex plate, which comprises a fixed vortex plate and an movable vortex plate, wherein the fixed vortex plate and the movable vortex plate are designed in a three-stage mode according to the difference of pressure differences born by gaps between tooth tops and tooth bottoms of the movable vortex plate in an air suction section, a compression section and an air discharge section when a vortex compressor works, namely the gaps between the tooth tops of the fixed vortex plate and the movable vortex plate and the gaps between the tooth bottoms of the fixed vortex plate and the tooth tops of the movable vortex plate are different according to the different sizes of the air suction section, the compression section and the air discharge section, the air suction section gap is larger than the compression section gap, and the compression section gap is larger than the air discharge section gap. By the arrangement, the friction surface between each tooth top and each tooth bottom of the movable vortex plate can be reduced while radial sealing of the movable vortex plate is ensured, so that friction power consumption is reduced. The scheme of the invention also comprises a scroll compressor with the scroll plate.

Description

Vortex plate and vortex compressor with same
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to a scroll plate and a scroll compressor with the same.
Background
At present, a radial sealing mode of a vortex plate in a vortex compressor for an air conditioner comprises a mode of arranging a groove on the tooth top of an movable vortex plate and additionally arranging a sealing part, and a mode of clearance fit between the tooth top and the tooth bottom of the movable vortex plate and adopting oil film sealing. The clearance fit between the tooth top and the tooth bottom of the movable vortex disk is adopted, and in the mode of oil film sealing, the size of the clearance between the tooth top and the tooth bottom of the movable vortex disk is the same, so that the machining precision of the tooth top and the tooth bottom of the movable vortex disk is required to be high, and in addition, when the compressor is in the running process, the friction area between the tooth top and the tooth bottom of the movable vortex disk is large, so that friction loss is easy to increase.
Disclosure of Invention
The invention provides a vortex plate, which comprises a fixed vortex plate and an movable vortex plate, wherein the fixed vortex plate and the movable vortex plate are designed in a three-stage mode according to the difference of pressure differences born by gaps between tooth tops and tooth bottoms of the movable vortex plate in an air suction section, a compression section and an air discharge section when a vortex compressor works, namely the gaps between the tooth tops of the fixed vortex plate and the movable vortex plate and the gaps between the tooth bottoms of the fixed vortex plate and the tooth tops of the movable vortex plate are different according to the different sizes of the air suction section, the compression section and the air discharge section, the air suction section gap is larger than the compression section gap, and the compression section gap is larger than the air discharge section gap. The scheme of the invention also comprises a scroll compressor with the scroll plate.
Preferably, the tooth bottoms of the fixed scroll (1) and the movable scroll (9) are designed in three sections from the air suction position to the air discharge position, namely an air suction section, a compression section and an air discharge section.
Preferably, both the fixed scroll (1) and the movable scroll (9) are designed in segments.
Preferably, the fixed scroll (1) and the movable scroll (9) are designed in a step-difference manner by the tooth bottoms.
Preferably, the step design acts between two adjacent segments, i.e. the tooth bottom height or the tooth top height between two adjacent segments is different.
Preferably, the tooth bottom height or the tooth top height in each of the suction section (3), the compression section (5) and the discharge section (7) is the same.
Preferably, when the adjacent two sections are designed in a step difference mode, smooth transition is adopted for transition between the corresponding tooth bottom heights or tooth top heights.
Preferably, when only the air suction section (3) and the compression section (5) are designed in a step difference manner, the tooth bottom heights of the compression section (5) and the air discharge section (7) are the same and smaller than the tooth bottom heights of the air suction section (3), or the tooth top heights of the compression section (5) and the air discharge section (7) are the same and larger than the tooth top heights of the air suction section (3), namely, the sealing oil film thicknesses between the tooth tops and the tooth bottoms of the compression section (5) and the air discharge section (7) are the same and smaller than the sealing oil film thicknesses between the tooth tops and the tooth bottoms of the air suction section (3).
Preferably, when only the compression section (5) and the exhaust section (7) are designed in a step difference manner, the heights of the tooth bottoms of the suction section (3) and the compression section (5) are the same and larger than those of the exhaust section (7), or the heights of the tooth tops of the suction section (3) and the compression section (5) are the same and smaller than those of the exhaust section (7), namely, the thicknesses of the sealing oil films between the tooth tops and the tooth bottoms corresponding to the suction section (3) and the compression section (5) are the same and larger than those between the tooth tops and the tooth bottoms corresponding to the exhaust section (7).
Preferably, when the step design is performed between the suction section (3) and the compression section (5), the tooth bottom height of the suction section (3) is greater than the tooth bottom height of the compression section (5), and the tooth bottom height of the compression section (5) is greater than the tooth bottom height of the exhaust section (7), or the tooth top height of the suction section (3) is less than the tooth top height of the compression section (5), and the tooth top height of the compression section (5) is less than the tooth top height of the exhaust section (7), namely, the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the suction section (3) is greater than the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the compression section (5), and the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the compression section (5) is greater than the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the exhaust section (7).
Preferably, when the step design is performed by adopting the scroll wrap bottom, the step design is also performed between the suction section (3) of the movable scroll (9) and the base of the movable scroll (9).
Preferably, clearance fit is adopted between the tooth top of the fixed scroll (1) and the tooth bottom of the movable scroll (9), and between the tooth bottom of the fixed scroll (1) and the tooth top of the movable scroll (9), and radial sealing is performed by an oil film.
Preferably, the scroll compressor employs a scroll plate having a step design.
The vortex plate and the vortex compressor with the vortex plate have the following beneficial effects:
1. The friction surface between each tooth top and each tooth bottom of the movable vortex plate can be reduced while the radial sealing of the movable vortex plate is ensured, so that the friction power consumption is reduced;
2. The machining precision requirement on the vortex plate bottom is reduced, and the machining cost is saved.
Drawings
FIG. 1 is a schematic diagram of a design structure of a tooth bottom step of a fixed scroll;
FIG. 2 is a schematic view of the design of the difference in the bottom steps of the wrap of the non-orbiting scroll shown in FIG. 1 drawn along the midpoint thereof;
FIG. 3 is a schematic diagram of a design structure of a step of a movable scroll wrap;
FIG. 4 is an expanded schematic view of the orbiting scroll wrap bottom level difference design along the midpoint of FIG. 2.
The reference numerals in the drawings are as follows:
1. a fixed vortex plate, 2, an air suction port; 3. an air suction section; 4. a transition section; 5. a compression section; 6. a transition section; 7. an exhaust section; 8. an exhaust port; 9. an orbiting scroll; 10. and a transition section.
Detailed Description
As shown in fig. 1 to 4, the invention provides a scroll, which mainly comprises a fixed scroll (1) provided with an air suction port (2) and an air discharge port (8) and an movable scroll (9) matched with the fixed scroll (1), wherein at least one of the fixed scroll (1) and the movable scroll (9) has a step design at the bottom of a tooth of the scroll, and at least two sections of the air suction section (3), the compression section (5) and the exhaust section (7) corresponding to the fixed scroll (1) or the movable scroll (9) have a step design. By designing the step difference of the tooth bottom or the tooth top of the vortex disk, the gap between the tooth top and the tooth bottom of the vortex disk corresponding to the two relatively lower pressure sections of the suction section (3) and the compression section (5) can be increased; therefore, the friction surface between each tooth top and each tooth bottom of the movable vortex plate is reduced while the radial sealing of the movable vortex plate is ensured, and the friction power consumption is reduced.
The step design refers to that the tooth bottom heights or tooth top heights between two adjacent sections in the three sections of the suction section (3), the compression section (5) and the exhaust section (7) corresponding to the vortex plate are different, the corresponding tooth bottom heights or tooth top heights in each section are the same, and when the two adjacent sections are subjected to step design, the transition between the corresponding tooth bottom heights or tooth top heights adopts smooth transition.
The step difference design is carried out on the tooth bottoms of at least one vortex plate in the fixed vortex plate (1) and the movable vortex plate (9), and the step difference design is carried out on at least two sections of the tooth bottoms or tooth tops of the suction section (3), the compression section (5) and the exhaust section (7) corresponding to the fixed vortex plate (1) or the movable vortex plate (9); when only the suction section (3) and the compression section (5) in the vortex plate are subjected to the step difference design, the tooth bottom heights of the compression section (5) and the exhaust section (7) are the same and smaller than the tooth bottom heights of the suction section (3), or the tooth top heights of the compression section (5) and the exhaust section (7) are the same and larger than the tooth top heights of the suction section (3), namely the seal oil film thicknesses between the tooth tops and the tooth bottoms corresponding to the compression section (5) and the exhaust section (7) are the same and smaller than the seal oil film thicknesses between the tooth tops and the tooth bottoms corresponding to the suction section (3); when only the compression section (5) and the exhaust section (7) in the vortex plate are subjected to the step difference design, the tooth bottom heights of the suction section (3) and the compression section (5) are the same and larger than the tooth bottom height of the exhaust section (7), or the tooth top heights of the suction section (3) and the compression section (5) are the same and smaller than the tooth bottom height of the exhaust section (7), namely the sealing oil film thicknesses between the tooth tops and the tooth bottoms corresponding to the suction section (3) and the compression section (5) are the same and larger than the sealing oil film thicknesses between the tooth tops and the tooth bottoms corresponding to the exhaust section (7); when the step design is carried out between the suction section (3) and the compression section (5) in the vortex plate, the compression section (5) and the exhaust section (7) are designed, the tooth bottom height of the suction section (3) is larger than the tooth bottom height of the compression section (5), the tooth bottom height of the compression section (5) is larger than the tooth bottom height of the exhaust section (7), or the tooth top height of the suction section (3) is smaller than the tooth top height of the compression section (5), and the tooth top height of the compression section (5) is smaller than the tooth top height of the exhaust section (7), namely the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the suction section (3) is larger than the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the compression section (5), and the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the compression section (5) is larger than the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the exhaust section (7).
When the step design is carried out by adopting the vortex plate tooth bottom, the step design can be carried out or not between the suction section (3) of the movable vortex plate (9) and the base of the movable vortex plate (9).
The tooth tops of the fixed scroll (1) and the tooth bottoms of the movable scroll (9) are in clearance fit, and the tooth bottoms of the fixed scroll (1) and the tooth tops of the movable scroll (9) are in radial sealing through an oil film.
The scroll compressor comprising the scroll plate can reduce friction surfaces between tooth tops and tooth bottoms of the movable scroll plate while ensuring radial sealing of the movable scroll plate, so that friction power consumption is reduced, and meanwhile, the machining precision requirement on the scroll plate bottom is also reduced, so that the machining cost is reduced.
In order to make the above-described technical solution and advantages more clear, the present invention will be further described in detail below with reference to the accompanying drawings by using a three-stage design method of the scroll wrap bottom. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The method is characterized in that the differential processing mode is adopted in the bottom of the movable vortex plate teeth as shown in fig. 1 to 4; wherein, as shown in fig. 1 and 2, the three-section step structure is processed at the tooth bottom of the fixed scroll (1), and as can be seen from fig. 1, the exhaust section (7) of the scroll compressor is arranged between the exhaust port (8) and the transition section (6); the exhaust section (7) and the compression section (5) are designed in a section difference mode, and smooth transition is achieved through the transition section (6); a compression section (5) of the scroll compressor is arranged between the transition section (6) and the transition section (4); the compression section (5) and the air suction section (3) are designed in a section difference mode, and smooth transition is achieved through the transition section (4); an air suction section of the scroll compressor is arranged between the transition section (4) and the air suction port (2) (comprising the air suction port); the smooth transition refers to that the transition between the sections cannot occur edges and corners; as shown in fig. 2, the tooth bottom height change schematic diagram after the involute in the middle of the tooth bottom is unfolded after the tooth bottom of the fixed scroll (1) is processed into a three-section step structure; as can be seen from fig. 2, after the step design is performed from the air suction port (2) to the air discharge port (8), the height of the tooth bottom is gradually reduced from the air suction section (3) to the air discharge section (7), namely, the thickness of the sealing oil film is gradually reduced after the tooth bottom is matched with the tooth top of the movable vortex plate (9).
Fig. 3 and 4 show an orbiting scroll (9) matched with the fixed scroll (1), wherein the design method of the step difference among the suction section (3), the compression section (5) and the discharge section (7) is the same as that of the fixed scroll (1); in order to prevent or reduce impurities existing at the bottom of the movable scroll (9) from entering a refrigerant flow passage of the scroll during operation, transitional abrasion between the movable scroll and the movable scroll is caused, and a step difference design is also carried out between an air suction section (3) of the movable scroll (9) and a base of the movable scroll (9) and transition is carried out through a transition section (10). Of course, a step design between the suction section (3) of the orbiting scroll (9) and the base of the orbiting scroll (9) may not be performed, while ensuring that the system is sufficiently clean.
As can be seen from fig. 2 and fig. 4, the tooth bottom height difference between two adjacent sections among the three sections of the air suction section (3), the compression section (5) and the air discharge section (7) is the design level difference.
Preferably, the tooth bottoms of the fixed scroll (1) and the movable scroll (9) are designed in three sections from the air suction position to the air discharge position, namely an air suction section, a compression section and an air discharge section.
Preferably, both the fixed scroll (1) and the movable scroll (9) are designed in segments.
Preferably, the fixed scroll (1) and the movable scroll (9) are designed in a step-difference manner by the tooth bottoms.
Preferably, the step design acts between two adjacent segments, i.e. the tooth bottom height or the tooth top height between two adjacent segments is different.
Preferably, the tooth bottom height or the tooth top height in each of the suction section (3), the compression section (5) and the discharge section (7) is the same.
Preferably, when the adjacent two sections are designed in a step difference mode, smooth transition is adopted for transition between the corresponding tooth bottom heights or tooth top heights.
Preferably, when only the air suction section (3) and the compression section (5) are designed in a step difference manner, the tooth bottom heights of the compression section (5) and the air discharge section (7) are the same and smaller than the tooth bottom heights of the air suction section (3), or the tooth top heights of the compression section (5) and the air discharge section (7) are the same and larger than the tooth top heights of the air suction section (3), namely, the sealing oil film thicknesses between the tooth tops and the tooth bottoms of the compression section (5) and the air discharge section (7) are the same and smaller than the sealing oil film thicknesses between the tooth tops and the tooth bottoms of the air suction section (3).
Preferably, when only the compression section (5) and the exhaust section (7) are designed in a step difference manner, the heights of the tooth bottoms of the suction section (3) and the compression section (5) are the same and larger than those of the exhaust section (7), or the heights of the tooth tops of the suction section (3) and the compression section (5) are the same and smaller than those of the exhaust section (7), namely, the thicknesses of the sealing oil films between the tooth tops and the tooth bottoms corresponding to the suction section (3) and the compression section (5) are the same and larger than those between the tooth tops and the tooth bottoms corresponding to the exhaust section (7).
Preferably, when the step design is performed between the suction section (3) and the compression section (5), the tooth bottom height of the suction section (3) is greater than the tooth bottom height of the compression section (5), and the tooth bottom height of the compression section (5) is greater than the tooth bottom height of the exhaust section (7), or the tooth top height of the suction section (3) is less than the tooth top height of the compression section (5), and the tooth top height of the compression section (5) is less than the tooth top height of the exhaust section (7), namely, the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the suction section (3) is greater than the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the compression section (5), and the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the compression section (5) is greater than the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the exhaust section (7).
Preferably, when the step design is performed by adopting the scroll wrap bottom, the step design is also performed between the suction section (3) of the movable scroll (9) and the base of the movable scroll (9).
Preferably, clearance fit is adopted between the tooth top of the fixed scroll (1) and the tooth bottom of the movable scroll (9), and between the tooth bottom of the fixed scroll (1) and the tooth top of the movable scroll (9), and radial sealing is performed by an oil film.
Preferably, the scroll compressor employs a scroll plate having a step design.
It should be noted that unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the invention, but any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, such as applying the design concept to a drive-by-wire device, should be included in the protection scope of the present invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (5)

1. The invention provides a vortex plate, which comprises a fixed vortex plate (1) provided with an air suction port (2) and an air exhaust port (8) and a movable vortex plate (9) matched with the fixed vortex plate (1), and is characterized in that: the step difference design is carried out on the tooth bottoms of at least one vortex plate in the fixed vortex plate (1) and the movable vortex plate (9), and the step difference design is carried out on at least two sections of the tooth bottoms or tooth tops of the suction section (3), the compression section (5) and the exhaust section (7) corresponding to the fixed vortex plate (1) or the movable vortex plate (9); the vortex teeth of the fixed vortex plate (1) and the movable vortex plate (9) are continuous vortex teeth from the air inlet (2) to the air outlet (8); the step design means that the tooth bottom heights or tooth top heights between two adjacent sections in the three sections of the suction section (3), the compression section (5) and the exhaust section (7) corresponding to the vortex plate are different, and the corresponding tooth bottom heights or tooth top heights in each section are the same; when the step design is carried out by adopting the vortex plate tooth bottom, the step design is carried out between the suction section (3) of the movable vortex plate (9) and the base of the movable vortex plate (9).
2. The scroll according to claim 1, wherein: when the adjacent two sections are designed in a step difference mode, smooth transition is adopted for transition between the corresponding tooth bottom heights or tooth top heights.
3. The scroll according to claim 1, wherein: when only the air suction section (3) and the compression section (5) are designed in a step difference mode, the tooth bottom heights of the compression section (5) and the air discharge section (7) are the same and smaller than the tooth bottom heights of the air suction section (3), or the tooth top heights of the compression section (5) and the air discharge section (7) are the same and larger than the tooth top heights of the air suction section (3), namely the sealing oil film thicknesses between the tooth tops and the tooth bottoms corresponding to the compression section (5) and the air discharge section (7) are the same and smaller than the sealing oil film thicknesses between the tooth tops and the tooth bottoms corresponding to the air suction section (3);
When only the compression section (5) and the exhaust section (7) are designed in a step difference mode, the tooth bottom heights of the air suction section (3) and the compression section (5) are the same and larger than the tooth bottom height of the exhaust section (7), or the tooth top heights of the air suction section (3) and the compression section (5) are the same and smaller than the tooth bottom height of the exhaust section (7), namely the sealing oil film thickness between the tooth tops and the tooth bottoms corresponding to the air suction section (3) and the compression section (5) is the same and larger than the sealing oil film thickness between the tooth tops and the tooth bottoms corresponding to the exhaust section (7);
When the section difference design is carried out between the air suction section (3) and the compression section (5), the tooth bottom height of the air suction section (3) is larger than the tooth bottom height of the compression section (5), the tooth bottom height of the compression section (5) is larger than the tooth bottom height of the air discharge section (7), or the tooth top height of the air suction section (3) is smaller than the tooth top height of the compression section (5), and the tooth top height of the compression section (5) is smaller than the tooth top height of the air discharge section (7), namely the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the air suction section (3) is larger than the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the compression section (5), and the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the compression section (5) is larger than the sealing oil film thickness between the tooth top and the tooth bottom corresponding to the air discharge section (7).
4. A scroll as claimed in any one of claims 1 to 3, wherein: the tooth tops of the fixed scroll (1) and the tooth bottoms of the movable scroll (9) are in clearance fit, and the tooth bottoms of the fixed scroll (1) and the tooth tops of the movable scroll (9) are in radial sealing through an oil film.
5. A scroll compressor comprising a scroll plate, characterized in that: the scroll is the scroll of any one of claims 1-4.
CN201610468205.1A 2016-06-24 2016-06-24 Vortex plate and vortex compressor with same Active CN107542663B (en)

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CN107542663B true CN107542663B (en) 2024-05-24

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1447029A (en) * 1998-11-20 2003-10-08 三菱电机株式会社 Swirl compressor
CN102678564A (en) * 2011-03-09 2012-09-19 上海日立电器有限公司 Axial double-floating structure of scroll compressor
CN204386887U (en) * 2015-01-07 2015-06-10 江西科技学院 A kind of scroll
CN104791250A (en) * 2015-04-02 2015-07-22 合肥通用机械研究院 Scroll refrigerating compressor with scroll plates adopting micro-groove end surface sealing structures
CN204493187U (en) * 2015-02-14 2015-07-22 苏州艾可普斯机电科技有限公司 The scroll of scroll fluid machine
JP2016023580A (en) * 2014-07-18 2016-02-08 三菱重工業株式会社 Scroll compressor
CN105431634A (en) * 2013-09-19 2016-03-23 三菱电机株式会社 Scroll compressor
CN205677838U (en) * 2016-06-24 2016-11-09 魏亮 A kind of scroll plate and there is the screw compressor of this scroll plate

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1447029A (en) * 1998-11-20 2003-10-08 三菱电机株式会社 Swirl compressor
CN102678564A (en) * 2011-03-09 2012-09-19 上海日立电器有限公司 Axial double-floating structure of scroll compressor
CN105431634A (en) * 2013-09-19 2016-03-23 三菱电机株式会社 Scroll compressor
JP2016023580A (en) * 2014-07-18 2016-02-08 三菱重工業株式会社 Scroll compressor
CN204386887U (en) * 2015-01-07 2015-06-10 江西科技学院 A kind of scroll
CN204493187U (en) * 2015-02-14 2015-07-22 苏州艾可普斯机电科技有限公司 The scroll of scroll fluid machine
CN104791250A (en) * 2015-04-02 2015-07-22 合肥通用机械研究院 Scroll refrigerating compressor with scroll plates adopting micro-groove end surface sealing structures
CN205677838U (en) * 2016-06-24 2016-11-09 魏亮 A kind of scroll plate and there is the screw compressor of this scroll plate

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