CN114017319A - Gradual change profile of tooth scroll compressor - Google Patents

Gradual change profile of tooth scroll compressor Download PDF

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Publication number
CN114017319A
CN114017319A CN202111288892.6A CN202111288892A CN114017319A CN 114017319 A CN114017319 A CN 114017319A CN 202111288892 A CN202111288892 A CN 202111288892A CN 114017319 A CN114017319 A CN 114017319A
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CN
China
Prior art keywords
tooth
scroll
vortex
arc section
tooth head
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CN202111288892.6A
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Chinese (zh)
Inventor
宋盼盼
吴鼎
魏名山
王翰
鲁振博
安钟衍
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Beijing Institute of Technology BIT
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Beijing Institute of Technology BIT
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Priority to CN202111288892.6A priority Critical patent/CN114017319A/en
Publication of CN114017319A publication Critical patent/CN114017319A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/10—Stators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

The present disclosure relates to the field of compressor technology, and in particular, to a gradually-varied-tooth scroll compressor. The scroll compressor comprises an orbiting scroll and a static scroll, wherein the orbiting scroll comprises an orbiting scroll body and an orbiting scroll tooth arranged on the orbiting scroll body, and the static scroll comprises a static scroll body and a static scroll tooth arranged on the static scroll body; move the vortex tooth and quiet vortex tooth and all include tooth head, intermediate part and the tooth afterbody that sets gradually along the vortex direction, the top face of tooth head and the top face of tooth afterbody all form the landing face, and the tooth height of intermediate part is along the direction crescent from tooth head to tooth afterbody. The utility model provides a scroll compressor realizes that the side tooth height of breathing in is great, and the side tooth height of exhausting is less to aggravate the reduction of working chamber volume, accelerated working medium compression process, improved the compression ratio, make working medium compress with bigger compression ratio, thereby not increasing the number of turns of moving, quiet whirlpool tooth, under the condition of the size of not increasing moving, quiet whirlpool tooth and quality, satisfy the demand of high compression ratio.

Description

Gradual change profile of tooth scroll compressor
Technical Field
The present disclosure relates to the field of compressor technology, and in particular, to a gradually-varied-tooth scroll compressor.
Background
The scroll compressor has the advantages of simple structure, stable operation, low noise, high mechanical efficiency, high volumetric efficiency and the like, and is widely applied to various fields of industry, life and the like. The movable vortex disk and the static vortex disk of the vortex compressor are assembled according to the determined revolution radius which is opposite and offset 180 degrees apart, the movable vortex disk is driven by a crankshaft with the eccentric radius as the revolution radius to realize the revolution translation of the movable vortex disk, the movable vortex disk is engaged with the static vortex disk in the motion process to form a plurality of pairs of crescent closed working cavities with continuously changed volumes, and the working medium is subjected to three processes of air suction, compression and exhaust in the crescent working cavities.
The most common molded lines of the dynamic vortex tooth and the static vortex tooth are fixed diameter base circle involute matched with a tooth head correction molded line. However, in the application occasion of high compression ratio, when the traditional fixed base circle involute fit tooth head is adopted to correct the profile, the wall thickness of the movable vortex tooth and the fixed vortex tooth is certain but the number of turns is larger, so that the size and the mass of the movable vortex disk and the fixed vortex disk are larger, and the light weight of the product is not facilitated.
Disclosure of Invention
To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a progressive tooth type scroll compressor.
The invention provides a gradually-changed tooth type scroll compressor, which comprises an orbiting scroll and a fixed scroll, wherein the orbiting scroll comprises an orbiting scroll body and an orbiting scroll tooth arranged on the orbiting scroll body, and the fixed scroll comprises a fixed scroll body and a fixed scroll tooth arranged on the fixed scroll body;
move the vortex tooth with quiet vortex tooth all includes tooth head, intermediate part and the tooth afterbody that sets gradually along the vortex direction, the top face of tooth head with the top face of tooth afterbody all forms into the landing face, the tooth height of intermediate part is followed the tooth head extremely the direction crescent of tooth afterbody.
Optionally, the surface of the orbiting scroll body facing the orbiting scroll tooth is formed with a land region for contacting with a top face of the tooth head of the fixed scroll tooth;
the surface of the fixed scroll body facing the fixed scroll teeth is formed with a land area for contacting a top face of the tooth head of the orbiting scroll teeth.
Optionally, a first sealing groove is formed in the tooth crest of the movable scroll tooth, a first sealing strip is arranged in the first sealing groove, and the first sealing strip is used for being in contact sealing with the surface, facing the stationary scroll tooth, of the stationary scroll body;
the tooth top surface of the static vortex tooth is provided with a second sealing groove, a second sealing strip is arranged in the second sealing groove, and the second sealing strip is used for sealing with the surface contact of the movable vortex tooth towards the movable vortex disc body.
Optionally, the groove bottom surface of the first sealing groove is parallel to the tooth crest plane of the movable vortex tooth at the position of the first sealing groove, and the groove bottom surface of the second sealing groove is parallel to the tooth crest plane of the stationary vortex tooth at the position of the second sealing groove.
Optionally, the movable scroll tooth includes an inner side profile and an outer side profile, the inner side profile of the movable scroll tooth includes a first tooth head correction arc segment and a first reducing base circle involute segment, and the outer side profile of the movable scroll tooth includes a second tooth head correction arc segment and a second reducing base circle involute segment;
the static vortex teeth comprise inner side molded lines and outer side molded lines, the inner side molded lines of the static vortex teeth comprise third tooth head correction arc sections and third reducing base circle gradually-opening line sections, and the outer side molded lines of the static vortex disks comprise fourth tooth head correction arc sections and fourth reducing base circle gradually-opening line sections;
the movable vortex tooth comprises a movable vortex tooth disengagement point, the first tooth head correction arc section is positioned on one side, away from the second tooth head correction arc section, of the movable vortex tooth disengagement point, and the second tooth head correction arc section is positioned on one side, away from the first tooth head correction arc section, of the movable vortex tooth disengagement point;
the static vortex tooth comprises a static vortex tooth disengaging point, a third tooth head correction circular arc section is located at the static vortex tooth disengaging point and is far away from one side of a fourth tooth head correction circular arc section, and the fourth tooth head correction circular arc section is located at the static vortex tooth disengaging point and is far away from one side of the third tooth head correction circular arc section.
Optionally, the tooth head portion of the movable vortex tooth includes the whole first tooth head correction arc segment, the whole second tooth head correction arc segment, a part of the first reducing base circle gradually-opening line segment, and a part of the second reducing base circle gradually-opening line segment;
the tooth head part of the fixed vortex tooth comprises a whole third tooth head correction circular arc section, a whole fourth tooth head correction circular arc section, a part of third reducing base circle gradually-opening line section and a part of fourth reducing base circle gradually-opening line section.
Optionally, an intersection line of a top platform surface of the tooth head portion of the movable vortex tooth and a tooth crest surface of the middle portion of the movable vortex tooth intersecting with the top platform surface is tangent to the first tooth head correction arc segment, and a tangent point is located at an intersection point of the first tooth head correction arc segment and the first reducing base circle involute segment;
the top platform face of the tooth head of the static vortex tooth and the tooth crest face of the middle part of the static vortex tooth intersected with the top platform face are tangent to the third tooth head correction arc section, and the tangent point is located at the intersection point of the third tooth head correction arc section and the third reducing base circle involute section.
Optionally, the first tooth head correction arc segment is tangent to the first reducing base circle gradually-opening segment at a connection position, and the second tooth head correction arc segment is tangent to the second reducing base circle gradually-opening segment at a connection position;
the third tooth head correction arc section is tangent to the third reducing base circle gradually-opening line section at a connecting position, and the fourth tooth head correction arc section is tangent to the fourth reducing base circle gradually-opening line section at a connecting position;
the first tooth head correction circular arc section and the second tooth head correction circular arc section are intersected at the movable vortex tooth disengagement point, and the third tooth head correction circular arc section and the fourth tooth head correction circular arc section are intersected at the static vortex tooth disengagement point.
Optionally, the radius of the first tooth head correction circular arc segment is R1, the radius of the fourth tooth head correction circular arc segment is R4, and R1-R4 are R0;
the radius of the second tooth head correction circular arc section is R2, the radius of the third tooth head correction circular arc section is R3, and R3-R2 are R0;
wherein, R0 is the revolving translation radius of the movable scroll.
Optionally, the central angle of the first tooth head correction arc segment is equal to the central angle of the fourth tooth head correction arc segment in size;
and the central angle of the second tooth head correction circular arc section is equal to the central angle of the third tooth head correction circular arc section in size.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the top surface of the tooth head part of the movable vortex tooth and the top surface of the tooth tail part of the static vortex tooth are both formed into platform surfaces, the tooth height of the middle part is gradually increased along the direction from the tooth head part to the tooth tail part, namely, the tooth heights of the movable vortex tooth and the static vortex tooth, which are close to the local position of the center of an exhaust hole and the local position of the peripheral side of an air suction part, are unchanged, the tooth heights of the middle part of the movable vortex tooth and the static vortex tooth are continuously changed, and the tooth height of the middle part is gradually increased along the direction from the tooth head part to the tooth tail part, so that the tooth height of the air suction side is larger, the tooth height of the air discharge side is smaller, the volume of a working cavity is reduced, the compression process of a working medium is accelerated, the compression ratio is improved, the working medium is compressed by a larger compression ratio, the compression ratio is increased under the condition that the number of turns of the movable vortex tooth and the static vortex tooth is unchanged, the number of turns is not increased, and the number of turns of the movable vortex tooth and the static vortex tooth is not increased, Under the condition of the size and the quality of the static vortex teeth, the requirement of high compression ratio is met, and therefore the problems that the dynamic vortex disc and the static vortex disc of the high compression ratio vortex compressor are low in structural compactness and light weight due to the fact that the number of the dynamic vortex ring and the static vortex ring is too large are effectively solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic cross-sectional view of an orbiting scroll and a fixed scroll of a progressive tooth scroll compressor according to an embodiment of the present disclosure;
fig. 2 is a schematic cross-sectional view of an orbiting scroll of a progressive tooth scroll compressor according to an embodiment of the present disclosure;
fig. 3 is a tooth profile line schematic view of an orbiting scroll and a fixed scroll of a progressive tooth scroll compressor according to an embodiment of the present disclosure;
fig. 4 is a schematic partial sectional view of a first seal groove on an orbiting scroll of a step-tooth scroll compressor according to an embodiment of the present disclosure.
Wherein, 1, the movable scroll pan; 101. a movable vortex tooth; 1011. the first tooth head corrects the arc section; 1012. a first reducing base circle gradually-opening line segment; 1013. the second gear corrects the arc section; 1014. a second reducing base circle gradually-opening line segment; 102. a first seal groove;
2. a static scroll pan; 201. a static vortex tooth; 2011. correcting the arc section by the third tooth head; 2012. a third reducing base circle gradually-opening line segment; 2013. correcting the arc section by the fourth tooth head; 2014. a fourth reducing base circle gradually-opening line segment; 202. a second seal groove; 3. and (4) exhausting holes.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Referring to fig. 1, some embodiments of the present disclosure provide a progressive tooth type scroll compressor including an orbiting scroll 1 and a fixed scroll 2, in which the orbiting scroll 1 includes an orbiting scroll body and an orbiting scroll 101 disposed on the orbiting scroll body, and the fixed scroll 2 includes a fixed scroll body and a fixed scroll 201 disposed on the fixed scroll body.
Wherein, move vortex tooth 101 and quiet vortex tooth 201 and all include tooth head, intermediate part and the tooth afterbody that sets gradually along the vortex direction, and the top face of tooth head and the top face of tooth afterbody all form the landing surface, and the tooth height of intermediate part is followed from tooth head to the direction of tooth afterbody and is crescent. That is, the tooth height of the movable vortex tooth and the static vortex tooth near the exhaust hole center and the suction periphery side is not changed, the tooth height of the middle part of the movable vortex tooth and the static vortex tooth is continuously changed, the tooth height of the middle part is gradually increased along the direction from the tooth head to the tooth tail, or the middle part is gradually increased along with the increase of the corresponding spread angle of each position, thereby realizing the larger tooth height of the suction side and the smaller tooth height of the exhaust side, further intensifying the reduction of the volume of the working chamber, accelerating the working medium compression process, improving the compression ratio, leading the working medium to be compressed with a larger compression ratio, further increasing the compression ratio under the condition that the number of turns of the movable vortex tooth and the static vortex tooth is not changed, namely meeting the requirement of high compression ratio under the condition that the number of turns of the movable vortex tooth and the static vortex tooth is not increased, and the size and the quality of the movable vortex tooth and the static vortex tooth are not increased, thereby effectively solving the problems of the movable vortex compressor with high compression ratio, The number of the static vortex ring gears is too large, so that the dynamic and static vortex disks have low structural compactness and light weight.
It should be understood that the top surface of the tooth head part and the top surface of the tooth tail part of the movable vortex tooth both refer to the top surface of the movable vortex tooth, namely the end surface of one end of the movable vortex tooth far away from the movable vortex disc body; correspondingly, the top face of the tooth head part and the top face of the tooth tail part of the static vortex tooth both refer to the top face of the static vortex tooth, namely the end face of one end of the static vortex tooth far away from the static vortex disc body.
Further, as shown in fig. 1, the surface of the orbiting scroll body facing the orbiting scroll tooth 101 is formed with a land area for contacting with the top face of the tooth head of the fixed scroll tooth 201; the surface of the fixed scroll body facing the fixed wrap 201 is formed with a land area for contact with the top face of the wrap head of the orbiting wrap 101. The arrangement is that the surface of the movable scroll disk body facing the movable scroll disk can be perfectly attached to the tooth crest of the fixed scroll teeth in the plane area with the equal tooth height close to the exhaust port side, and the surface of the fixed scroll disk body facing the fixed scroll disk can be perfectly attached to the tooth crest of the movable scroll teeth in the plane area with the equal tooth height close to the exhaust port side, so that the working medium in the exhaust chamber is prevented from leaking into the compression chamber.
In specific implementation, partial tooth tops of the movable vortex teeth and the static vortex teeth can be cut off by a circular truncated cone-shaped trimming cutter with a certain gradient, so that the tooth height of the movable vortex teeth and the tooth height of the static vortex teeth can be changed; in order to ensure that the top of the vortex tooth cut off by the side surface of the circular truncated cone can be perfectly meshed with the bottom surface of the other vortex disc, the bottom surface of the vortex disc needs to be cut off by a corresponding circular truncated cone-shaped trimming cutter with the same gradient, and meanwhile, in the working process of the compressor, the bottom surface of the vortex disc and the equal-tooth-height plane area of the other vortex disc tooth top side close to the exhaust port are perfectly attached to prevent working media in the exhaust port from leaking into a compression cavity, and an outer circular ring with movable vortex disc eccentricity is added on the basis of the treatment of the vortex tooth on the equal-tooth-height plane area of the vortex disc bottom surface close to the exhaust port 3. Through reasonable processing treatment of the top and the bottom of the vortex disc, compared with a vortex compressor with equal tooth height, the continuous change of the tooth height of the middle part of the vortex disc is realized, the working medium compression process is accelerated, and the compression ratio is improved.
In some embodiments, referring to fig. 1 and 2, a first sealing groove 102 is formed on a tooth crest surface of the movable scroll tooth 101, and a first sealing strip is arranged in the first sealing groove 102 and used for being in contact sealing with a surface of the fixed scroll body facing the fixed scroll tooth 201; the tooth crest of the static vortex tooth 201 is provided with a second sealing groove 202, a second sealing strip is arranged in the second sealing groove 202, and the second sealing strip is used for being in contact sealing with the surface of the movable vortex disc body facing the movable vortex tooth 101, so that the leakage of working medium in the axial gap between the movable vortex tooth 101 and the static vortex disc 2 in the revolution and translation process is reduced.
Further, referring to fig. 1, the groove bottom surface of the first sealing groove 102 is parallel to the tooth top surface of the movable vortex tooth 101 at the position of the first sealing groove 102, and the groove bottom surface of the second sealing groove 202 is parallel to the tooth top surface of the fixed vortex tooth 201 at the position of the second sealing groove 202.
In some embodiments, referring to fig. 3, the orbiting scroll 101 includes an inside profile and an outside profile, the inside profile of the orbiting scroll 101 includes a first crown correction arc section 1011 and a first base involute section 1012, and the outside profile of the orbiting scroll 101 includes a second crown correction arc section 1013 and a second base involute section 1014; the fixed scroll 201 comprises an inner side molded line and an outer side molded line, the inner side molded line of the fixed scroll 201 comprises a third tooth head correction arc section 2011 and a third reducing base circle involute section 2012, and the outer side molded line of the fixed scroll 2 comprises a fourth tooth head correction arc section 2013 and a fourth reducing base circle involute section 2014.
Continuing to refer to fig. 3, the movable scroll 101 includes a movable scroll tooth-disengaging point, the first tooth-head correction arc section 1011 is located on a side of the movable scroll tooth-disengaging point away from the second tooth-head correction arc section 1013, and the second tooth-head correction arc section 1013 is located on a side of the movable scroll tooth-disengaging point away from the first tooth-head correction arc section 1011; the fixed vortex tooth 201 comprises a fixed vortex tooth disengaging point, the third tooth head correcting arc section 2011 is positioned on one side, away from the fourth tooth head correcting arc section 2013, of the fixed vortex tooth disengaging point, and the fourth tooth head correcting arc section 2013 is positioned on one side, away from the third tooth head correcting arc section 2011, of the fixed vortex tooth 201 disengaging point.
Specifically, a section of circular arc curve (namely a first tooth head modified circular arc section and a fourth tooth head modified circular arc section) is added in front of a disengagement point of an inner side molded line of the movable scroll 1 and an outer side molded line of the fixed scroll 2, the inner side molded line of the movable scroll 1 and the outer side molded line of the fixed scroll 2 are adjusted through the circular arc curve, and the structures of the inner side molded line of the movable scroll 1 and the outer side molded line of the fixed scroll 2 are changed, so that the inner cavity can realize quick exhaust after the inner side molded line of the movable scroll 1 and the outer side molded line of the fixed scroll 2 reach the disengagement point; an arc curve (namely a second tooth head modified arc section and a third tooth head modified arc section) is added before the disengagement point of the outer side molded line of the movable scroll 1 and the inner side molded line of the static scroll 2, the outer side molded line of the movable scroll 1 and the inner side molded line of the static scroll 2 are adjusted through the arc curve, and the outer side molded line of the movable scroll 1 and the inner side molded line structure of the static scroll 2 are changed, so that the outer cavity can realize quick exhaust after the outer side molded line of the movable scroll 1 and the inner side molded line of the static scroll 2 reach the disengagement point, therefore, the over-compression loss in the exhaust process can be reduced, the power loss is reduced, and the compressor efficiency is improved.
In specific implementation, the first tooth head correction arc section 1011 is a first tooth head correction large arc section, and the second tooth head correction arc section 1013 is a second tooth head correction small arc section, that is, the radius of the arc where the first tooth head correction arc section 1011 is located is larger than the radius of the arc where the second tooth head correction arc section 1013 is located; the third tooth tip correction circular arc section 2011 is a third tooth tip correction large circular arc section, and the fourth tooth tip correction circular arc section 2013 is a fourth tooth tip correction small circular arc section, i.e., the radius of the circular arc where the third tooth tip correction circular arc section 2011 is located is larger than the radius of the circular arc where the fourth tooth tip correction circular arc section 2013 is located.
Further, the tooth head of the movable vortex tooth 101 comprises the whole first tooth head correction arc section 1011, the whole second tooth head correction arc section 1013, and part of the first reducing base circle involute section 1012 and part of the second reducing base circle involute section 1014; the tooth head of the fixed vortex tooth 201 comprises a whole third tooth head correction circular arc section 2011, a whole fourth tooth head correction circular arc section 2013, a partial third reducing base circle gradually-opening line section 2012 and a partial fourth reducing base circle gradually-opening line section 2014.
Specifically, the inner and outer molded lines of the vortex teeth on the movable vortex disc and the fixed vortex disc are determined by the following equations:
1) outer profile of the fixed wrap 201:
Figure BDA0003334210860000081
aou＝aou(φ)＝a0+δ0φ
Figure BDA0003334210860000082
2) inner profile of the fixed wrap 201:
Figure BDA0003334210860000091
ain＝ain(φ)＝a0+δ0φ
Figure BDA0003334210860000092
3) radius of rotation of orbiting scroll 1:
Figure BDA0003334210860000093
4) outer profile of the orbiting scroll 101:
Figure BDA0003334210860000094
5) inner profile of orbiting scroll 101:
Figure BDA0003334210860000095
in the above formulas: a is0Initial base radius, RoRadius of rotation, delta, of orbiting scroll 10Variable base circle radius coefficient, phi, outside profile line spread angle of static vortex tooth 201, theta, crank angle, phie-end of profile angle.
By changing the structures of the inner side molded line of the movable scroll 1 and the outer side molded line of the fixed scroll 2, the inner cavity can realize quick exhaust after the inner side molded line of the movable scroll 1 and the outer side molded line of the fixed scroll 2 reach the disengagement point; by changing the structures of the outer side molded line of the movable scroll 1 and the inner side molded line of the fixed scroll 2, the outer cavity can realize quick exhaust after the outer side molded line of the movable scroll 1 and the inner side molded line of the fixed scroll 2 reach the disengagement point.
Furthermore, the intersection line of the top platform surface of the tooth head part of the movable vortex tooth 101 and the tooth crest surface of the middle part of the movable vortex tooth 101 intersected with the top platform surface is tangent to the first tooth head correction arc section 1011, and the tangent point is positioned at the intersection point of the first tooth head correction arc section 1011 and the first reducing base circle involute section 1012; the intersecting line of the top platform surface of the tooth head of the fixed vortex tooth 201 and the tooth crest surface of the middle part of the fixed vortex tooth 201 intersecting with the top platform surface is tangent to a third tooth head correction arc section 2011, and the tangent point is located at the intersection point of the third tooth head correction arc section 2011 and a third reducing base circle involute section 2012. So set up and make the tooth head structure of moving whirlpool dish 1 and quiet whirlpool dish 2 change, tooth head structure head moves backward, and inboard molded lines shifts to exhaust hole center, and tooth head structure maximum thickness thickens, and tooth head structural strength increases to can guarantee the operational reliability of compressor.
Further, referring to fig. 3, the first tooth tip correction arc section 1011 and the first diameter-changing base circle diverging line section 1012 are tangent at the connecting position, and the second tooth tip correction arc section 1013 and the second diameter-changing base circle diverging line section 1014 are tangent at the connecting position; the third tooth head correcting arc section 2011 is tangent to the third reducing base circle gradually-opening line section 2012 at the connecting position, and the fourth tooth head correcting arc section 2013 is tangent to the fourth reducing base circle gradually-opening line section 2014 at the connecting position; the first tooth head correction circular arc section 1011 and the second tooth head correction circular arc section 1013 intersect at a moving vortex tooth disengagement point, and the third tooth head correction circular arc section 2011 and the fourth tooth head correction circular arc section 2013 intersect at a static vortex tooth 201 disengagement point. So set up and to improve and move 1 and quiet whirlpool dish 2 linear structure before the disengagement point of whirlpool dish for scroll compressor reaches can reach big opening exhaust position fast after the disengagement point and carries out quick exhaust, consequently can reduce the excessive compression loss among the exhaust process, reduces power loss, improves compressor efficiency.
Further, the radius of the first tooth head correction circular arc section 1011 is R1, the radius of the fourth tooth head correction circular arc section 2013 is R4, and R1-R4 are R0; the radius of the second tooth head correction circular arc section is R2, the radius of the third tooth head correction circular arc section 2011 is R3, and R3-R2 are R0; wherein, R0 is the revolving translation radius of the movable scroll.
Further, the central angle of the first tooth head correction arc section 1011 and the central angle of the fourth tooth head correction arc section 2013 are equal in size; the central angle of the second tooth tip correction circular arc section 1013 is equal to the central angle of the third tooth tip correction circular arc section 2011.
Specifically, the present disclosure combines a variable diameter base circle involute profile as the base profile of the wrap tooth in addition to the traditional fixed diameter base circle involute selection, which allows for further reduction of the wrap diameter without significant changes in compression ratio, as shown in the following table.
TABLE 1
Figure BDA0003334210860000111
Based on the reducing base circle profile design containing the parameters in the table 1, the specific implementation of the gradual change tooth height scheme is further combined, the internal volume ratio of the scroll compressor is remarkably increased, in the implementation case, the tooth height of the tooth height part of the central cavity equal tooth height part is continuously reduced to 40mm from 50mm at the outermost side, and the internal volume ratio of 2.56/0.8 to 3.2 can be preliminarily obtained, so that the internal volume ratio is remarkably improved on the basis of 2.58 of the internal volume ratio under the traditional sizing base circle equal tooth height design, the size of a scroll disk is reduced simultaneously, and the lightweight degree of the scroll compressor is further improved.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The gradual change tooth type scroll compressor is characterized by comprising an orbiting scroll and a fixed scroll, wherein the orbiting scroll comprises an orbiting scroll body and an orbiting scroll tooth arranged on the orbiting scroll body, and the fixed scroll comprises a fixed scroll body and a fixed scroll tooth arranged on the fixed scroll body;
move the vortex tooth with quiet vortex tooth all includes tooth head, intermediate part and the tooth afterbody that sets gradually along the vortex direction, the top face of tooth head with the top face of tooth afterbody all forms into the landing face, the tooth height of intermediate part is followed the tooth head extremely the direction crescent of tooth afterbody.
2. The progressive tooth scroll compressor of claim 1, wherein a surface of the orbiting scroll body facing the orbiting scroll wrap is formed with a land region for contacting a top face of the wrap head of the fixed scroll wrap;
the surface of the fixed scroll body facing the fixed scroll teeth is formed with a land area for contacting a top face of the tooth head of the orbiting scroll teeth.
3. The progressive tooth type scroll compressor according to claim 1, wherein a first sealing groove is formed in a tip surface of the orbiting scroll, a first sealing strip is disposed in the first sealing groove, and the first sealing strip is used for sealing in contact with a surface of the fixed scroll body facing the fixed scroll;
the tooth top surface of the static vortex tooth is provided with a second sealing groove, a second sealing strip is arranged in the second sealing groove, and the second sealing strip is used for sealing with the surface contact of the movable vortex tooth towards the movable vortex disc body.
4. The progressive tooth scroll compressor of claim 3, wherein a groove bottom surface of the first seal groove is parallel to a tooth top surface plane of the orbiting scroll at a position of the first seal groove, and a groove bottom surface of the second seal groove is parallel to a tooth top surface of the stationary scroll at a position of the second seal groove.
5. The progressive tooth scroll compressor of any one of claims 1 to 4, wherein the orbiting scroll tooth includes an inner profile and an outer profile, the inner profile of the orbiting scroll tooth includes a first tooth correction arc segment and a first reducing base circle diverging segment, and the outer profile of the orbiting scroll tooth includes a second tooth correction arc segment and a second reducing base circle diverging segment;
the static vortex teeth comprise inner side molded lines and outer side molded lines, the inner side molded lines of the static vortex teeth comprise third tooth head correction arc sections and third reducing base circle gradually-opening line sections, and the outer side molded lines of the static vortex disks comprise fourth tooth head correction arc sections and fourth reducing base circle gradually-opening line sections;
the movable vortex tooth comprises a movable vortex tooth disengagement point, the first tooth head correction arc section is positioned on one side, away from the second tooth head correction arc section, of the movable vortex tooth disengagement point, and the second tooth head correction arc section is positioned on one side, away from the first tooth head correction arc section, of the movable vortex tooth disengagement point;
the static vortex tooth comprises a static vortex tooth disengaging point, a third tooth head correction circular arc section is located at the static vortex tooth disengaging point and is far away from one side of a fourth tooth head correction circular arc section, and the fourth tooth head correction circular arc section is located at the static vortex tooth disengaging point and is far away from one side of the third tooth head correction circular arc section.
6. The progressive tooth scroll compressor of claim 5, wherein the tooth tip portion of the orbiting scroll includes the entire first tooth tip modified circular arc segment, the entire second tooth tip modified circular arc segment, and a portion of the first reducing base circle diverging line segment and a portion of the second reducing base circle diverging line segment;
the tooth head part of the fixed vortex tooth comprises a whole third tooth head correction circular arc section, a whole fourth tooth head correction circular arc section, a part of third reducing base circle gradually-opening line section and a part of fourth reducing base circle gradually-opening line section.
7. The progressive tooth scroll compressor according to claim 6, wherein an intersection line of a top land surface of the tooth head portion of the orbiting scroll and a tooth crest surface of the intermediate portion of the orbiting scroll intersecting therewith is tangent to the first tooth head correction circular arc segment at an intersection point of the first tooth head correction circular arc segment and the first reducing base circle diverging line segment;
the top platform face of the tooth head of the static vortex tooth and the tooth crest face of the middle part of the static vortex tooth intersected with the top platform face are tangent to the third tooth head correction arc section, and the tangent point is located at the intersection point of the third tooth head correction arc section and the third reducing base circle involute section.
8. The progressive tooth scroll compressor of claim 5, wherein the first tooth tip correction arc segment and the first base diameter taper segment are tangent at a junction location, and the second tooth tip correction arc segment and the second base diameter taper segment are tangent at a junction location;
the third tooth head correction arc section is tangent to the third reducing base circle gradually-opening line section at a connecting position, and the fourth tooth head correction arc section is tangent to the fourth reducing base circle gradually-opening line section at a connecting position;
the first tooth head correction circular arc section and the second tooth head correction circular arc section are intersected at the movable vortex tooth disengagement point, and the third tooth head correction circular arc section and the fourth tooth head correction circular arc section are intersected at the static vortex tooth disengagement point.
9. The progressive tooth scroll compressor of claim 5, wherein the first tooth tip correction arc segment has a radius of R1, the fourth tooth tip correction arc segment has a radius of R4, R1-R4-R0;
the radius of the second tooth head correction circular arc section is R2, the radius of the third tooth head correction circular arc section is R3, and R3-R2 are R0;
wherein, R0 is the revolving translation radius of the movable scroll.
10. The progressive tooth scroll compressor of claim 5, wherein the central angle of the first tooth tip correction arc segment and the central angle of the fourth tooth tip correction arc segment are equal in magnitude;
and the central angle of the second tooth head correction circular arc section is equal to the central angle of the third tooth head correction circular arc section in size.
CN202111288892.6A 2021-11-02 2021-11-02 Gradual change profile of tooth scroll compressor Pending CN114017319A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06137286A (en) * 1992-09-11 1994-05-17 Hitachi Ltd Scroll fluid machine
JP2016160912A (en) * 2015-03-05 2016-09-05 三菱重工オートモーティブサーマルシステムズ株式会社 Scroll fluid machine
CN110219701A (en) * 2019-07-24 2019-09-10 中国石油大学(华东) A kind of scroll expander of variable cross-section scroll wrap
CN110418890A (en) * 2017-08-18 2019-11-05 三菱重工制冷空调系统株式会社 Closedtop and the scroll fluid machine for using the closedtop
CN112460015A (en) * 2020-12-03 2021-03-09 珠海格力节能环保制冷技术研究中心有限公司 Scroll compressor having a plurality of scroll members

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06137286A (en) * 1992-09-11 1994-05-17 Hitachi Ltd Scroll fluid machine
JP2016160912A (en) * 2015-03-05 2016-09-05 三菱重工オートモーティブサーマルシステムズ株式会社 Scroll fluid machine
CN110418890A (en) * 2017-08-18 2019-11-05 三菱重工制冷空调系统株式会社 Closedtop and the scroll fluid machine for using the closedtop
CN110219701A (en) * 2019-07-24 2019-09-10 中国石油大学(华东) A kind of scroll expander of variable cross-section scroll wrap
CN112460015A (en) * 2020-12-03 2021-03-09 珠海格力节能环保制冷技术研究中心有限公司 Scroll compressor having a plurality of scroll members

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Application publication date: 20220208