CN113279960B - Pump body structure, scroll compressor and air conditioner - Google Patents

Pump body structure, scroll compressor and air conditioner Download PDF

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Publication number
CN113279960B
CN113279960B CN202110759008.6A CN202110759008A CN113279960B CN 113279960 B CN113279960 B CN 113279960B CN 202110759008 A CN202110759008 A CN 202110759008A CN 113279960 B CN113279960 B CN 113279960B
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China
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section
tooth
root
magnetic
scroll
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CN113279960A (en
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焦卫国
王珂
丁谦
刘普
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Rotary Pumps (AREA)

Abstract

The utility model provides a pump body structure, scroll compressor and air conditioner, pump body structure includes: a first section of tooth top magnetic part is arranged at the position, far away from the center of the fixed scroll, on the top of the fixed scroll, a first section of tooth root magnetic part is arranged at the position, far away from the center of the movable scroll, on the plane of the movable scroll root, and the first section of tooth top magnetic part is opposite to the first section of tooth root magnetic part; and/or a second section of tooth root magnetic part is arranged at the center, far away from the fixed scroll, on the plane of the fixed scroll tooth root, a second section of tooth top magnetic part is arranged at the center, far away from the movable scroll, on the top of the movable scroll tooth, and the second section of tooth root magnetic part and the second section of tooth top magnetic part are different in magnetism. According to the invention, the sealing performance between the radial outer edge of the static scroll and the radial outer edge of the movable scroll can be effectively improved, the leakage of the tooth top of the scroll compressor is reduced, and the working efficiency of the compressor is improved.

Description

Pump body structure, scroll compressor and air conditioner
Technical Field
The disclosure relates to the technical field of air conditioners, in particular to a pump body structure, a scroll compressor and an air conditioner.
Background
The core parts of a scroll compressor are an orbiting scroll and a fixed scroll. A plurality of crescent-shaped compression cavities are formed by the mutual meshing of the movable and fixed scroll plates. When the compressor runs, the movable scroll plate revolves and translates relative to the fixed scroll plate, and the volume of the crescent-shaped compression cavity realizes periodic change.
Tooth tip leakage is inevitable when the movable and fixed scroll plates are mutually matched. In order to reduce tooth tip leakage and improve volumetric efficiency, the scroll compressors on the market today mainly have the following two ways to realize tooth tip sealing. The first way is to add a flexible sealing strip to the tooth top of the scroll to achieve sealing. The sealing mode has the defects that the performance of the flexible sealing strip is greatly influenced by temperature, and the sealing effect is poor at the place with higher temperature of the scroll plate. The second way is to seal by means of an oil film. The sealing mode is to form an oil film at the tooth top clearance for sealing by arranging a reasonable tooth top clearance. However, the temperature and the pressure of the movable and static discs are continuously increased from the outer ring to the center, so that the deformation of the scroll disc is larger as the movable and static discs are closer to the center, the tooth top clearance is changed due to the deformation of the scroll teeth, the tooth top clearance of the central exhaust cavity of the scroll disc is smaller, and the most common defect is that the tooth top at the center of the scroll teeth is abraded.
Because the scroll compressor among the prior art has the position sealing effect of the addendum of quiet whirlpool dish or the addendum of moving whirlpool dish not good, leads to technical problem such as refrigerant leakage blow-by, consequently this disclosure research designs a pump body structure, scroll compressor and air conditioner.
BRIEF SUMMARY OF THE PRESENT DISCLOSURE
Therefore, the technical problem to be solved by the present disclosure is to overcome the defect that the scroll compressor in the prior art has poor position sealing effect of the tooth top of the static scroll or the tooth top of the movable scroll, resulting in leakage and blow-by of refrigerant, thereby providing a pump body structure, a scroll compressor and an air conditioner.
In order to solve the above problem, the present disclosure provides a pump body structure, which includes:
the movable vortex disc comprises a movable vortex tooth crest and a movable vortex tooth root plane, a first groove is formed in the position, far away from the center of the movable vortex disc, on the fixed vortex tooth crest and close to the radial outer edge of the fixed vortex disc, and is internally provided with a first section of tooth-top magnetic element;
and/or a third groove is formed in the position, on the fixed scroll tooth root plane, far away from the center of the fixed scroll and close to the radial outer edge of the fixed scroll, a second section of tooth root magnetic part is arranged in the third groove, a fourth groove is formed in the position, on the movable scroll tooth top, far away from the center of the movable scroll and close to the radial outer edge of the movable scroll, a second section of tooth top magnetic part is arranged in the fourth groove, the second section of tooth root magnetic part is opposite to the second section of tooth top magnetic part, and the second section of tooth root magnetic part and the second section of tooth top magnetic part are different in magnetism.
In some embodiments, a fifth groove is formed in a position on the top of the fixed scroll tooth, which is close to the center of the fixed scroll and is far from the outer edge of the fixed scroll in the radial direction, a third-section tooth top magnetic part is arranged in the fifth groove, a sixth groove is formed in a position on the movable scroll tooth root plane, which is close to the center of the movable scroll and is far from the outer edge of the movable scroll in the radial direction, a third-section tooth root magnetic part is arranged in the sixth groove, the third-section tooth top magnetic part is opposite to the third-section tooth root magnetic part, and the third-section tooth top magnetic part and the third-section tooth root magnetic part have the same magnetism;
and/or a seventh groove is formed in the position, on the fixed scroll tooth root plane, far away from the center of the fixed scroll and close to the radial outer edge of the fixed scroll, a fourth-section tooth root magnetic part is arranged in the seventh groove, an eighth groove is formed in the position, on the movable scroll tooth top, far away from the center of the movable scroll and close to the radial outer edge of the movable scroll, a fourth-section tooth top magnetic part is arranged in the eighth groove, the fourth-section tooth root magnetic part is opposite to the fourth-section tooth top magnetic part, and the magnetism of the fourth-section tooth root magnetic part is the same as that of the fourth-section tooth top magnetic part.
In some embodiments, the first segment addendum magnetic element is proximate to a radially outer edge of the fixed scroll relative to the third segment addendum magnetic element, the third segment addendum magnetic element is proximate to a center of the fixed scroll relative to the first segment addendum magnetic element;
the second segment root magnetic piece being proximate a radially outer edge of the fixed scroll relative to the fourth segment root magnetic piece, the fourth segment root magnetic piece being proximate a center of the fixed scroll relative to the second segment root magnetic piece;
the second-stage tooth top magnetic element is close to the radial outer edge of the movable scroll relative to the fourth-stage tooth top magnetic element, and the fourth-stage tooth top magnetic element is close to the center of the movable scroll relative to the second-stage tooth top magnetic element;
the first stage root magnetic member is proximate a radially outer edge of the orbiting scroll relative to the third stage root magnetic member, which is proximate a center of the orbiting scroll relative to the first stage root magnetic member.
In some embodiments, a position on the top of the fixed wrap between the first and third sections of the tip magnetic element is formed as a first transition section, the first transition section is not provided with a groove or a magnetic body, a position on the fixed wrap plane between the second and fourth sections of the root magnetic element is formed as a second transition section, and the second transition section is not provided with a groove or a magnetic body.
In some embodiments, a third transition section is formed at a position on the top of the orbiting scroll tooth between the second-stage tip magnetic part and the fourth-stage tip magnetic part, the third transition section is not provided with a groove or a magnetic body, a fourth transition section is formed at a position on the root plane of the orbiting scroll tooth between the first-stage tooth root magnetic part and the third-stage tooth root magnetic part, and the fourth transition section is not provided with a groove or a magnetic body.
In some embodiments, a first tip clearance is formed between the fixed wrap tip and the orbiting wrap root plane, and a lubricating oil is introduced into the first tip clearance to form an oil film;
and a second tooth top clearance is formed between the movable vortex tooth top and the fixed vortex tooth root plane, and lubricating oil is introduced into the second tooth top clearance to form an oil film.
In some embodiments, the first tip clearance has a depth that is constant or gradually increases along an extension direction of the fixed wrap tip from a radially outer side to a radially inner side;
the second crest gap has a depth that is constant or gradually increases along an extending direction of the orbiting scroll crest from a radially outer side to a radially inner side.
In some embodiments, when including the first stage addendum magnetic element, the first stage dedendum magnetic element, the second stage dedendum magnetic element, the third stage addendum magnetic element, the third stage dedendum magnetic element, the fourth stage dedendum magnetic element, and the fourth stage addendum magnetic element:
the number of the first-section tooth top magnetic parts is at least 1, the number of the first-section tooth root magnetic parts is at least 1, the number of the second-section tooth root magnetic parts is at least 1, the number of the third-section tooth top magnetic parts is at least 1, the number of the third-section tooth root magnetic parts is at least 1, the number of the fourth-section tooth root magnetic parts is at least 1, and the number of the fourth-section tooth top magnetic parts is at least 1;
the cross section of at least one of the first section tooth top magnetic part, the first section tooth root magnetic part, the second section tooth root magnetic part, the third section tooth top magnetic part, the third section tooth root magnetic part and the fourth section tooth root magnetic part is rectangular or arc.
The present disclosure also provides a scroll compressor including the pump body structure of any one of the preceding claims.
The present disclosure also provides an air conditioner including the scroll compressor of any one of the preceding claims.
The utility model provides a pair of pump body structure, scroll compressor and air conditioner have following beneficial effect:
1. the first groove is arranged on the top of a fixed vortex tooth close to the radial outer edge of a fixed vortex disc, a first section of tooth top magnetic part is arranged in the first groove, the first groove can be matched with a first section of tooth root magnetic part on a movable vortex tooth root plane close to the radial outer edge of a movable vortex disc, the first section of tooth top magnetic part and the first section of tooth root magnetic part are magnetically different, magnetic attraction can be generated, and/or a third groove is arranged on the fixed vortex tooth root plane close to the radial outer edge of the movable vortex disc, a second section of tooth root magnetic part is arranged in the third groove, the second section of tooth top magnetic part can be matched with a second section of tooth top magnetic part on the top of the movable vortex tooth near the radial outer edge of the movable vortex disc, the second section of tooth top magnetic part and the third section of tooth root magnetic part are magnetically different, the tooth top of the fixed vortex disc far away from the center of the vortex disc and the corresponding tooth root area of the movable vortex disc attract each other according to the principle that homopolarity and heteropolarity of the magnetic parts repel each other, the tooth top of the fixed vortex disc far away from the center of the movable vortex disc and the tooth root area attract each other, the radial outer edge of the static vortex plate is firmly attached to the radial outer edge of the movable vortex plate, the sealing performance at the radial outer edge is improved, the leakage of the tooth top of the scroll compressor is effectively reduced, and the working efficiency of the compressor is improved;
2. the third-section tooth top magnetic part is arranged on the top of a fixed vortex tooth near the center of the fixed vortex disc, can be matched with the third-section tooth root magnetic part on a movable vortex tooth root plane near the center of the movable vortex disc, and can generate magnetic repulsion force when the third-section tooth top magnetic part and the third-section tooth root magnetic part are the same in magnetism, and/or the seventh groove is arranged on the fixed vortex tooth root plane near the center of the fixed vortex disc, the fourth-section tooth root magnetic part is arranged in the seventh groove and can be matched with the fourth-section tooth top magnetic part on the movable vortex tooth top near the center of the movable vortex disc, and the third-section tooth top magnetic part and the fourth-section tooth top magnetic part can generate magnetic repulsion force when the fourth-section tooth top magnetic part and the fourth-section tooth top magnetic part are the same in magnetism, according to the principle that homopolar repulsion and heteropolar attraction of the magnetic parts, the tooth root of the fixed vortex disc near the center is mutually repelled with the corresponding tooth root area of the fixed vortex disc, the center of the static vortex disk and the center of the dynamic vortex disk are enabled to act so as not to be close to each other and generate friction between the tooth top and the tooth root, so that the abrasion between the tooth top and the tooth root is prevented or reduced, the power consumption of the compressor is reduced, the operation efficiency of the compressor is improved, and the service life of the compressor is prolonged.
Drawings
Fig. 1 is an assembly structure view of a scroll compressor pump body structure (after a movable scroll and a fixed scroll are assembled) according to the present disclosure;
FIG. 2 is an internal structural view of a fixed scroll in the scroll compressor of the present disclosure;
FIG. 3 is an internal structural view of a orbiting scroll in the scroll compressor of the present disclosure;
FIG. 4 is a bottom view of the fixed scroll in the scroll compressor of the present disclosure;
fig. 5 is a plan view structural view of a movable scroll in the scroll compressor of the present disclosure.
The reference numerals are represented as:
1. a fixed scroll; 11. a fixed scroll crest; 12. a fixed wrap root plane; 2. a movable scroll; 21. a movable vortex tooth top; 22. a root plane of the orbiting scroll wrap; F. a first segment of tooth top magnetic element; D. a first stage root magnetic member; H. a second section root magnetic member; B. a second section of tooth top magnetic element; E. a third-section tooth top magnetic part; C. a third stage root magnetic member; G. a fourth stage dedendum magnetic member; A. a fourth segment of tooth top magnetic element; 31. a first groove; 32. a second groove; 33. a third groove; 34. a fourth groove; 35. a fifth groove; 36. a sixth groove; 37. a seventh groove; 38. an eighth groove; 41. a first transition section; 42. a second transition section; 43. a third transition section; 44. a fourth transition section.
Detailed Description
As shown in fig. 1-5, the present disclosure provides a pump body structure comprising:
a fixed scroll 1 and a movable scroll 2, the fixed scroll 1 comprises a fixed scroll crest 11 and a fixed scroll crest plane 12, the movable scroll 2 comprises a movable scroll crest 21 and a movable scroll crest plane 22, and a first groove 31 is provided on the fixed wrap tip 11 at a position away from the center of the fixed wrap 1 and close to the radially outer edge of the fixed wrap 1, a first-section tooth top magnetic piece F is arranged in the first groove 31, a second groove 32 is arranged on the movable vortex tooth root plane 22 far away from the center of the movable vortex plate 2 and close to the radial outer edge of the movable vortex plate 2, a first stage dedendum magnetic member D is disposed in the second groove 32, the first stage addendum magnetic member F is opposite to the first stage dedendum magnetic member D, and the magnetism of the first section addendum magnetic part F is different from that of the first section dedendum magnetic part D;
and/or a third groove 33 is formed in the position, on the fixed scroll tooth root plane 12, far away from the center of the fixed scroll 1 and close to the radial outer edge of the fixed scroll 1, a second section of tooth root magnetic part H is arranged in the third groove 33, a fourth groove 34 is formed in the position, on the movable scroll tooth top 21, far away from the center of the movable scroll 2 and close to the radial outer edge of the movable scroll 2, a second section of tooth top magnetic part B is arranged in the fourth groove 34, the second section of tooth root magnetic part H is opposite to the second section of tooth top magnetic part B, and the second section of tooth root magnetic part H is different from the second section of tooth top magnetic part B in magnetism.
The first groove is arranged on the top of a fixed vortex tooth close to the radial outer edge of a fixed vortex disc, a first section of tooth top magnetic part is arranged in the first groove, the first groove can be matched with a first section of tooth root magnetic part on a movable vortex tooth root plane close to the radial outer edge of a movable vortex disc, the first section of tooth top magnetic part and the first section of tooth root magnetic part are magnetically different, magnetic attraction can be generated, and/or a third groove is arranged on the fixed vortex tooth root plane close to the radial outer edge of the movable vortex disc, a second section of tooth root magnetic part is arranged in the third groove, the second section of tooth top magnetic part can be matched with a second section of tooth top magnetic part on the top of the movable vortex tooth near the radial outer edge of the movable vortex disc, the second section of tooth top magnetic part and the third section of tooth root magnetic part are magnetically different, the tooth top of the fixed vortex disc far away from the center of the vortex disc and the corresponding tooth root area of the movable vortex disc attract each other according to the principle that homopolarity and heteropolarity of the magnetic parts repel each other, the tooth top of the fixed vortex disc far away from the center of the movable vortex disc and the tooth root area attract each other, the radial outer edge of the static vortex plate is firmly attached to the radial outer edge of the dynamic vortex plate, the sealing performance of the radial outer edge is improved, leakage of the tooth top of the scroll compressor is effectively reduced, and the working efficiency of the compressor is improved.
The present disclosure provides a novel tip seal for a scroll compressor. Through setting up corresponding magnetic part at vortex dish crest and tooth root, utilize the magnetic part homopolar to repel each other, the principle that the heteropolar is inhaled can reduce the leakage of scroll compressor top to can effectively prevent the wearing and tearing of vortex dish center top tooth root, improve the work efficiency of compressor, reduce the consumption of compressor, improve the life of compressor.
The magnetic part of the tooth root groove of the scroll. The first section of tooth top magnetic part of the movable scroll close to the center of the scroll is opposite to the first section of tooth root magnetic part of the fixed scroll close to the center of the scroll, and the magnetic poles of the tooth top magnetic parts are the same. The second section of tooth top magnetic part of the movable scroll, which is far away from the center of the scroll plate, is opposite to the second section of tooth root magnetic part of the fixed scroll, which is far away from the center of the scroll plate, and the magnetic poles of the second section of tooth top magnetic part and the second section of tooth root magnetic part are different. According to the principle that like poles and unlike poles of magnetic parts attract each other, the tooth tops of movable scroll discs close to the centers of the scroll discs and the corresponding tooth root areas of the fixed scroll discs repel each other, and the tooth tops of the movable scroll discs far away from the centers of the scroll discs and the corresponding tooth root areas of the fixed scroll discs attract each other.
The tooth top of the static vortex disk is provided with two sections of magnetic parts embedded into the tooth top groove of the vortex disk, and the tooth root of the movable vortex disk is provided with two sections of magnetic parts embedded into the tooth root groove of the vortex disk. The first-section tooth top magnetic part of the fixed scroll close to the center of the scroll is opposite to the first-section tooth root magnetic part of the movable scroll close to the center of the scroll, and the magnetic poles of the first-section tooth top magnetic part and the first-section tooth root magnetic part are the same. The second section of the tooth top magnetic part of the static vortex far away from the center of the vortex disc is opposite to the second section of the tooth root magnetic part of the movable vortex disc far away from the center of the vortex disc, and the magnetic poles of the second section of the tooth top magnetic part are different. According to the principle that like poles and unlike poles of magnetic parts attract each other, the tooth top of the static vortex disk close to the center of the vortex disk and the corresponding movable disk tooth root area repel each other, and the tooth top of the static vortex disk far away from the center of the vortex disk and the corresponding movable disk tooth root area attract each other.
The closer the pressure and temperature to the movable and fixed vortex disks is to the center of the vortex disk, the larger the deformation of the vortex disk is, so that the tooth root and the tooth top at the center of the vortex disk are most easily worn, and the tooth root and tooth top matching part at the periphery of the movable and fixed disks is easy to leak. Through above-mentioned magnetic part, move quiet scroll center region repulsion, sound dish periphery inter attraction can reduce the leakage of scroll compressor addendum like this, effectively prevents the wearing and tearing of scroll center addendum tooth root, improves the work efficiency of compressor, reduces the consumption of compressor, improves the life of compressor.
In some embodiments, a fifth groove 35 is formed in the fixed scroll crest 11 at a position close to the center of the fixed scroll 1 and far from the outer edge of the fixed scroll 1 in the radial direction, a third-stage tooth-top magnetic element E is formed in the fifth groove 35, a sixth groove 36 is formed in the movable scroll tooth root plane 22 at a position close to the center of the movable scroll 2 and far from the outer edge of the movable scroll 2 in the radial direction, a third-stage tooth-top magnetic element C is formed in the sixth groove 36, the third-stage tooth-top magnetic element E is opposite to the third-stage tooth-bottom magnetic element C, and the third-stage tooth-top magnetic element E and the third-stage tooth-bottom magnetic element C have the same magnetism;
and/or a seventh groove 37 is formed in the position, on the fixed scroll root plane 12, far away from the center of the fixed scroll 1 and close to the radial outer edge of the fixed scroll 1, a fourth-segment tooth-root magnetic part G is arranged in the seventh groove 37, an eighth groove 38 is formed in the position, on the movable scroll crest 21, far away from the center of the movable scroll 2 and close to the radial outer edge of the movable scroll 2, a fourth-segment tooth-top magnetic part a is arranged in the eighth groove 38, the fourth-segment tooth-root magnetic part G is opposite to the fourth-segment tooth-top magnetic part a, and the fourth-segment tooth-root magnetic part G and the fourth-segment tooth-top magnetic part a have the same magnetism.
The third-section tooth top magnetic part is arranged on the top of a fixed vortex tooth near the center of the fixed vortex disc, can be matched with the third-section tooth root magnetic part on a movable vortex tooth root plane near the center of the movable vortex disc, and can generate magnetic repulsion force when the third-section tooth top magnetic part and the third-section tooth root magnetic part are the same in magnetism, and/or the seventh groove is arranged on the fixed vortex tooth root plane near the center of the fixed vortex disc, the fourth-section tooth root magnetic part is arranged in the seventh groove and can be matched with the fourth-section tooth top magnetic part on the movable vortex tooth top near the center of the movable vortex disc, and the third-section tooth top magnetic part and the fourth-section tooth top magnetic part can generate magnetic repulsion force when the fourth-section tooth top magnetic part and the fourth-section tooth top magnetic part are the same in magnetism, according to the principle that homopolar repulsion and heteropolar attraction of the magnetic parts, the tooth root of the fixed vortex disc near the center is mutually repelled with the corresponding tooth root area of the fixed vortex disc, the center of the static vortex disk and the center of the dynamic vortex disk are enabled to act so as not to be close to each other and generate friction between the tooth top and the tooth root, so that the abrasion between the tooth top and the tooth root is prevented or reduced, the power consumption of the compressor is reduced, the operation efficiency of the compressor is improved, and the service life of the compressor is prolonged.
A scroll compressor is a high-speed scroll fluid machine. The scroll compressor needs to work normally, the movable scroll and the fixed scroll are meshed with each other to form a crescent compression cavity, and the volume of the crescent compression cavity is changed periodically along with the operation of the compressor. Leakage from scroll compressors is a research focus and has been a significant cause of the recent development of scroll compressors.
When the movable and fixed scroll disks are matched with each other, air is sucked from the outer edge of the scroll disk to form an air suction cavity, and an engagement point formed by the movable and fixed disks along with the rotation of the main shaft continuously moves from outside to inside along the scroll wrap, so that the volume of a formed crescent compression cavity is gradually reduced. The pressure and temperature of the compression chamber formed in the center of the scroll is greater than the pressure and temperature of the compression chamber formed in the edge of the scroll. The central portion of the scroll is largely deformed, which is also a cause of frequent wear of the central portion of the scroll. Two mainstream sealing modes are available in the market at present, and the first mode is to add a flexible sealing strip to the tooth crest of the scroll plate to realize sealing. The sealing mode has the defects that the performance of the flexible sealing strip is greatly influenced by temperature, and the sealing effect is poor at the place with higher temperature of the scroll plate. The second way is to seal by means of an oil film. The sealing mode is to form an oil film at the tooth top clearance for sealing by arranging a reasonable tooth top clearance. Because the deformation of the central tooth of the scroll is large and the deformation of the edge is small, the phenomenon of abrasion of the tooth tops of the tooth roots of the scroll in the exhaust cavity can be caused by arranging the same tooth top clearance. In view of the above, the present disclosure provides a novel tip seal for a scroll compressor. The movable and fixed vortex discs are firstly provided with reasonable tooth top clearances, lubricating oil can generate oil films in the clearances, and then corresponding magnetic parts are embedded in tooth top and tooth root of the movable and fixed vortex discs.
Fig. 1 is an assembly view of a movable scroll and a fixed scroll, fig. 2 is a fixed scroll, and fig. 3 is a movable scroll. Reasonable tooth top clearance is set according to actual conditions when the scroll plates are matched with each other. Figure 4 is a bottom view of the fixed scroll with the wrap facing us. The tooth top and the tooth root plane of static vortex dish are gone up flutedly, imbed the magnetism spare big such as with the recess in the recess that corresponds, and magnetism spare and vortex dish cooperation firmly can not separate, and wherein third section tooth top magnetism spare E (be the first magnetism spare of static vortex dish tooth top), first section tooth top magnetism spare F (be static vortex dish tooth top second magnetism spare), fourth section tooth root magnetism spare G (be the first magnetism spare of static vortex dish tooth root), second section tooth root magnetism spare H (be the second magnetism spare of static vortex dish tooth root). Fig. 5 is a top view of the orbiting scroll with the wrap facing us. Move the addendum and the tooth root plane of vortex dish and go up flutedly, imbed the magnetic part big such as with the recess in the recess that corresponds, and the magnetic part firmly can not separate with the vortex dish cooperation, wherein fourth section addendum magnetic part A (move the first magnetic part of vortex dish addendum promptly), second section addendum magnetic part B (move the vortex dish addendum second magnetic part promptly), third section tooth root magnetic part C (move the first magnetic part of vortex dish tooth root promptly), first section tooth root magnetic part D (move the vortex dish tooth root second magnetic part promptly). When the movable and fixed scroll plates are meshed with each other, the third-section tooth top magnetic element E of the fixed scroll plate corresponds to the third-section tooth root magnetic element C of the movable scroll plate, and the opposite magnetic poles of the third-section tooth top magnetic element E and the third-section tooth root magnetic element C of the movable scroll plate are the same, so that mutual repulsive force is generated. The first-section tooth top magnetic part F of the fixed scroll corresponds to the first-section tooth root magnetic part D of the movable scroll, and opposite magnetic poles of the first-section tooth top magnetic part F and the first-section tooth root magnetic part D are different, so that mutual attraction force is generated. The fourth-segment tooth root magnetic part G of the fixed scroll corresponds to the fourth-segment tooth top magnetic part A of the movable scroll, and opposite magnetic poles of the fourth-segment tooth root magnetic part G and the fourth-segment tooth top magnetic part A of the movable scroll are the same, so that mutual repulsive force is generated. The second-section tooth root magnetic part H of the fixed scroll corresponds to the second-section tooth tip magnetic part B of the movable scroll, and opposite magnetic poles of the two parts are different, so that mutual attraction force is generated.
The compressor is provided with an anti-rotation mechanism in the whole machine, and the movable scroll plate can not rotate around the axis of the movable scroll plate. In a scroll compressor, an orbiting scroll translates with a small radius of gyration (generally within 5 mm) around the center of a base circle of a fixed scroll. Therefore, the four pairs of magnetic members corresponding to each other described in the above paragraph do not shift in relative position during operation of the compressor. According to the corresponding relation of the four pairs of magnetic parts, when the movable scroll and the fixed scroll are matched with each other, two pairs of magnetic parts (E pair C, G pair A) at the center of the scrolls generate mutually repulsive force, and the mutually repulsive force can offset the large deformation at the center of the scrolls to prevent the abrasion at the center of the scrolls. Two pairs of magnetic parts (F to D and H to B) at the edge of the scroll generate mutual attraction force, and the mutual attraction force can enable the edge of the scroll to be better sealed and prevent tooth top leakage.
In some embodiments, the first section addendum magnetic element F is located near a radially outer edge of the fixed scroll 1 with respect to the third section addendum magnetic element E, which is located near a center of the fixed scroll 1 with respect to the first section addendum magnetic element F;
the second segment root magnetic piece H is located near a radially outer edge of the fixed scroll 1 relative to the fourth segment root magnetic piece G, which is located near a center of the fixed scroll 1 relative to the second segment root magnetic piece H;
the second-stage tooth top magnetic element B is located closer to the radially outer edge of the orbiting scroll 2 than the fourth-stage tooth top magnetic element a is located closer to the center of the orbiting scroll 2 than the second-stage tooth top magnetic element B is;
the first stage root magnetic member D is close to the radial outer edge of the orbiting scroll 2 with respect to the third stage root magnetic member C, which is close to the center of the orbiting scroll 2 with respect to the first stage root magnetic member D.
The magnetic disc is a preferred structure form of four magnetic parts, namely, a first section of tooth top magnetic part for playing a magnetic attraction force is positioned at the radial outer edge, and the first section of tooth root magnetic part on the moving disc with the magnetic property opposite to that of the first section of tooth top magnetic part is magnetically attracted so as to generate a suction force on the radial outer edge of the moving and static scroll discs and enhance the sealing property of the radial outer edge; a third-stage tooth top magnetic part for generating magnetic repulsion is positioned at the central position, and a third tooth root magnetic part on the movable disc with the same magnetism generates repulsion so as to reduce the abrasion between the tooth top and the tooth root at the central position; the second section of tooth root magnetic part for playing a magnetic attraction force is positioned at the radial outer edge and can be magnetically attracted with the second section of tooth top magnetic part on the movable disc with opposite magnetism so as to generate a suction force to the radial outer edge of the movable and static scroll discs and enhance the sealing property of the radial outer edge; the fourth stage tooth root magnetic member for exerting magnetic repulsive force is located at the central position to generate repulsive force with the fourth tooth top magnetic member on the movable disk having the same magnetism to reduce the wear between the tooth top and the tooth root at the central position.
In some embodiments, a first transition section 41 is formed at a position between the first section tip magnetic part F and the third section tip magnetic part E on the fixed wrap tip 11, neither a groove nor a magnetic body is formed on the first transition section 41, a second transition section 42 is formed at a position between the second section tooth root magnetic part H and the fourth section tooth root magnetic part G on the fixed wrap root plane 12, neither a groove nor a magnetic body is formed on the second transition section 42.
This is a further preferred form of the pump body structure of the present disclosure, wherein the first transition section between the first section and the third section of the tooth top magnetic member is provided with no magnetic member, and there is a section without a magnetic member on the tooth top of the fixed scroll, which is located between the center of the scroll and the edge of the scroll and belongs to the middle position of the scroll. Since the deformation at this location is between the center of the scroll and the edge of the scroll, neither mutually repelling poles are required to reduce wear nor mutually attracting poles are required to enhance sealing, so no magnetic pieces are required to make the magnetic transition.
The second transition section is arranged between the second section and the fourth section of the tooth root magnetic part, a section without the magnetic part is arranged on the tooth root of the fixed scroll, and the position is between the center of the scroll and the edge of the scroll and belongs to the middle position of the scroll. Since the deformation at this location is between the center of the scroll and the edge of the scroll, neither mutually repelling poles are required to reduce wear nor mutually attracting poles are required to enhance sealing, so no magnetic pieces are required to make the magnetic transition.
In some embodiments, a third transition section 43 is formed at a location on the orbiting scroll tip 21 between the second section tip magnetic piece B and the fourth section tip magnetic piece a, neither a groove nor a magnetic body is formed on the third transition section 43, a fourth transition section 44 is formed at a location on the orbiting scroll root plane 22 between the first section tooth root magnetic piece D and the third section tooth root magnetic piece C, neither a groove nor a magnetic body is formed on the fourth transition section 44.
This is a further preferred form of the pump body structure of the present disclosure, and a third transition section between the second section and the fourth section of the tooth top magnetic member is provided, and the transition section is not provided with a magnetic member, and there is a section without a magnetic member on the tooth top of the orbiting scroll, which is located between the center of the orbiting scroll and the edge of the orbiting scroll and belongs to the middle position of the orbiting scroll. Since the deformation at this location is between the center of the scroll and the edge of the scroll, neither mutually repelling poles are required to reduce wear nor mutually attracting poles are required to enhance sealing, so no magnetic pieces are required to make the magnetic transition.
The second transition section is arranged between the first section and the third section of the tooth root magnetic part, a section of the tooth root of the movable scroll is provided with a place without the magnetic part, and the place is between the center of the scroll and the edge of the scroll and belongs to the middle position of the scroll. Since the deformation at this location is between the center of the scroll and the edge of the scroll, neither mutually repelling poles are required to reduce wear nor mutually attracting poles are required to enhance sealing, so no magnetic pieces are required to make the magnetic transition.
In some embodiments, a first tip clearance is formed between the fixed wrap tip 11 and the orbiting wrap root plane 22, and a lubricating oil is introduced into the first tip clearance to form an oil film;
a second crest clearance is formed between the orbiting wrap crest 21 and the fixed wrap root plane 12, and lubricating oil is introduced into the second crest clearance to form an oil film.
The first tooth crest gap is arranged between the fixed scroll crest and the movable scroll crest plane, and oil is introduced into the first tooth crest gap to form an oil film, so that the lubricating effect on the gap can be improved, the sealing performance between the fixed scroll crest and the movable scroll crest plane can be improved, the abrasion between the fixed scroll crest and the movable scroll crest can be effectively reduced, and the power consumption can be reduced; the second tooth top gap is arranged between the movable vortex tooth top and the fixed vortex tooth root plane, and oil is introduced into the second tooth top gap to form an oil film, so that the lubricating effect on the gap can be improved, the sealing performance between the movable vortex tooth top and the fixed vortex tooth root plane is improved, the abrasion between the movable vortex tooth top and the fixed vortex tooth root is effectively reduced, and the power consumption is reduced. And reasonable tooth top and root clearances are arranged at the tooth top and the tooth root corresponding to the movable and fixed scroll discs. The lubricating oil can generate an oil film in these clearances.
In some embodiments, the depth of the first tip clearance is constant or gradually increases along the extending direction of the fixed wrap tip 11 from the radially outer side to the radially inner side;
the second tip clearance has a depth that is constant or gradually increases along the direction in which the orbiting scroll tip 21 extends from the radially outer side to the radially inner side.
The first tooth top clearance is gradually increased from the radial outer side to the radial inner side, and the probability of deformation of the fixed vortex tooth and the movable vortex tooth is higher due to the fact that the position of the center is in a high-temperature and high-pressure working condition, so that the depth of the first tooth top clearance closer to the center is set to be larger, the situation that collision or abrasion occurs between the tooth top and the tooth root close to the center is more favorably prevented or reduced, and power consumption caused by abrasion is reduced; through the direction of second addendum clearance from radial outside to radial inboard crescent, because be located the operating mode that the central point is in high temperature high pressure, the probability that static vortex tooth and movable vortex tooth take place to warp is bigger, consequently sets up the depth that is close to the second addendum clearance of center more to be bigger, is favorable to preventing more or reducing the circumstances emergence of bumping or wearing and tearing between addendum and the dedendum that is close to the central point, reduces the wearing and tearing and the power consumption that brings.
In some embodiments, when including the first stage addendum magnetic element F, the first stage dedendum magnetic element D, the second stage dedendum magnetic element H, the third stage addendum magnetic element E, the third stage dedendum magnetic element C, the fourth stage dedendum magnetic element G, and the fourth stage addendum magnetic element a:
the number of the first-section tooth root magnetic parts F is at least 1, the number of the first-section tooth root magnetic parts D is at least 1, the number of the second-section tooth root magnetic parts H is at least 1, the number of the second-section tooth root magnetic parts B is at least 1, the number of the third-section tooth root magnetic parts E is at least 1, the number of the third-section tooth root magnetic parts C is at least 1, the number of the fourth-section tooth root magnetic parts G is at least 1, and the number of the fourth-section tooth root magnetic parts A is at least 1;
the cross section of at least one of the first section of tooth top magnetic part F, the first section of tooth root magnetic part D, the second section of tooth root magnetic part H, the third section of tooth top magnetic part E, the third section of tooth root magnetic part C and the fourth section of tooth root magnetic part G and the fourth section of tooth top magnetic part A is rectangular or arc.
The present disclosure provides two magnetic members on the tip of the orbiting scroll wrap and two magnetic members on the tooth root for a total of four magnetic members. Two magnetic members are provided on the tip of the fixed scroll, and two magnetic members are provided on the root of the fixed scroll, for a total of four magnetic members. The movable and fixed scroll disks are mutually matched to form four pairs of magnetic parts. In practical cases, different numbers of magnetic members, such as 3 pairs, 5 pairs, 6 pairs, can be set according to practical situations.
The shape of the magnetic member in the present disclosure is designed along the shape of the tip or root of the scroll, and various shapes such as a rectangle may be provided in practice.
The present disclosure also provides a scroll compressor including the pump body structure of any one of the preceding claims.
The present disclosure provides a novel tip seal for a scroll compressor. Through setting up corresponding magnetic part at vortex dish crest and tooth root, utilize the magnetic part homopolar to repel each other, the principle that the heteropolar is inhaled can reduce the leakage of scroll compressor top to can effectively prevent the wearing and tearing of vortex dish center top tooth root, improve the work efficiency of compressor, reduce the consumption of compressor, improve the life of compressor.
The present disclosure also provides an air conditioner including the scroll compressor of any one of the preceding claims.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present disclosure, and these modifications and variations should also be regarded as the protection scope of the present disclosure.

Claims (10)

1. A pump body structure, its characterized in that: the method comprises the following steps:
the vortex disc comprises a fixed vortex disc (1) and a movable vortex disc (2), wherein the fixed vortex disc (1) comprises a fixed vortex tooth top (11) and a fixed vortex tooth root plane (12), the movable vortex disc (2) comprises a movable vortex tooth top (21) and a movable vortex tooth root plane (22), a first section of tooth top magnetic element (F) is arranged in the first groove (31), the position, far away from the center of the fixed vortex disc (1), on the fixed vortex tooth top (11) and close to the radial outer edge of the fixed vortex disc (1), a second groove (32) is arranged in the first groove (31), the position, far away from the center of the movable vortex disc (2) and close to the radial outer edge of the movable vortex disc (2), on the movable vortex tooth root plane (22), of the first section of tooth top magnetic element (D) is arranged in the second groove (32), and the first section of tooth top magnetic element (F) is opposite to the first section of tooth bottom magnetic element (D), and the first section addendum magnetic part (F) is magnetically different from the first section dedendum magnetic part (D);
and/or, the center of keeping away from static vortex dish (1) on static vortex tooth root plane (12) and being close to the position of the radial outer fringe of static vortex dish (1) is provided with third recess (33), be provided with second section tooth root magnetism spare (H) in third recess (33), the center of keeping away from on the movable vortex tooth top (21) and being close to the position of the radial outer fringe of movable vortex dish (2) is provided with fourth recess (34), be provided with second section tooth top magnetism spare (B) in fourth recess (34), second section tooth root magnetism spare (H) with second section tooth top magnetism spare (B) are relative, and second section tooth root magnetism spare (H) with the magnetism of second section tooth top magnetism spare (B) is different.
2. The pump body structure according to claim 1, wherein:
a fifth groove (35) is formed in a position, close to the center of the fixed scroll (1), on the fixed scroll crest (11) and far away from the radial outer edge of the fixed scroll (1), a third-section tooth crest magnetic element (E) is arranged in the fifth groove (35), a sixth groove (36) is formed in a position, close to the center of the movable scroll (2) and far away from the radial outer edge of the movable scroll (2), on the movable scroll root plane (22), a third-section tooth root magnetic element (C) is arranged in the sixth groove (36), the third-section tooth crest magnetic element (E) is opposite to the third-section tooth root magnetic element (C), and the third-section tooth root magnetic element (E) and the third-section tooth root magnetic element (C) are identical in magnetism;
and/or, the center of keeping away from static vortex dish (1) on the static vortex tooth root plane (12) and being close to the position of the radial outer fringe of static vortex dish (1) is provided with seventh recess (37), be provided with fourth section tooth root magnetism spare (G) in seventh recess (37), the center of keeping away from on the movable vortex tooth top (21) and being close to the position of the radial outer fringe of movable vortex dish (2) is provided with eighth recess (38), be provided with fourth section tooth top magnetism spare (A) in eighth recess (38), fourth section tooth root magnetism spare (G) with fourth section tooth top magnetism spare (A) are relative, and fourth tooth root section tooth root magnetism spare (G) with the magnetism of fourth section tooth top magnetism spare (A) is the same.
3. The pump body structure according to claim 2, wherein:
when the first-stage tooth top magnetic part (F) and the third-stage tooth top magnetic part (E) are included: the first section addendum magnetic element (F) is close to a radially outer edge of the fixed scroll (1) with respect to the third section addendum magnetic element (E), and the third section addendum magnetic element (E) is close to a center of the fixed scroll (1) with respect to the first section addendum magnetic element (F);
when second stage root magnetic member (H) and fourth stage root magnetic member (G) are included: said second stage root magnetic piece (H) being close to the radially outer edge of the fixed scroll (1) with respect to said fourth stage root magnetic piece (G) being close to the centre of the fixed scroll (1) with respect to said second stage root magnetic piece (H);
when the second-stage tooth top magnetic part (B) and the fourth-stage tooth top magnetic part (A) are included: the second-stage tooth top magnetic element (B) is located close to the radially outer edge of the movable scroll (2) with respect to the fourth-stage tooth top magnetic element (A), which is located close to the center of the movable scroll (2) with respect to the second-stage tooth top magnetic element (B);
when first stage root magnetic means (D) and third stage root magnetic means (C) are included: said first stage root magnetic means (D) being close to the radial outer edge of said orbiting scroll (2) with respect to said third stage root magnetic means (C) being close to the centre of said orbiting scroll (2) with respect to said first stage root magnetic means (D).
4. The pump body structure according to claim 3, wherein:
the position, located between the first section of tooth top magnetic part (F) and the third section of tooth top magnetic part (E), on the fixed vortex tooth top (11) is formed into a first transition section (41), no groove or magnetic body is arranged on the first transition section (41), a second transition section (42) is formed on the position, located between the second section of tooth root magnetic part (H) and the fourth section of tooth root magnetic part (G), on the fixed vortex tooth root plane (12), and no groove or magnetic body is arranged on the second transition section (42).
5. The pump body structure according to claim 3 or 4, wherein:
the position, located between the second-section tooth top magnetic part (B) and the fourth-section tooth top magnetic part (A), on the movable vortex tooth top (21) is formed into a third transition section (43), no groove or magnetic body is arranged on the third transition section (43), a fourth transition section (44) is formed on the movable vortex tooth root plane (22) at the position, located between the first-section tooth root magnetic part (D) and the third-section tooth root magnetic part (C), and no groove or magnetic body is arranged on the fourth transition section (44).
6. The pump body structure according to any one of claims 1 to 5, wherein:
a first tooth top clearance is formed between the fixed scroll tooth top (11) and the movable scroll tooth root plane (22), and lubricating oil is introduced into the first tooth top clearance to form an oil film;
and a second tooth top clearance is formed between the movable vortex tooth top (21) and the fixed vortex tooth root plane (12), and lubricating oil is introduced into the second tooth top clearance to form an oil film.
7. The pump body structure according to claim 6, wherein:
the depth of the first tip clearance is constant or gradually increased along the extending direction of the fixed spiral wrap tip (11) from the radial outer side to the radial inner side;
the second tip clearance has a depth that is constant or gradually increases along a direction in which the orbiting scroll tip (21) extends from a radially outer side to a radially inner side.
8. The pump body structure according to any one of claims 2 to 5, wherein:
when including first section tooth top magnetism spare (F), first section tooth root magnetism spare (D), second section tooth root magnetism spare (H), third section tooth top magnetism spare (E), third section tooth root magnetism spare (C), fourth section tooth root magnetism spare (G) and fourth section tooth top magnetism spare (A):
the number of the first-section tooth top magnetic parts (F) is at least 1, the number of the first-section tooth root magnetic parts (D) is at least 1, the number of the second-section tooth root magnetic parts (H) is at least 1, the number of the second-section tooth top magnetic parts (B) is at least 1, the number of the third-section tooth top magnetic parts (E) is at least 1, the number of the third-section tooth root magnetic parts (C) is at least 1, the number of the fourth-section tooth root magnetic parts (G) is at least 1, and the number of the fourth-section tooth top magnetic parts (A) is at least 1;
the tooth-base magnetic part comprises a first-section tooth-top magnetic part (F), a first-section tooth-root magnetic part (D), a second-section tooth-root magnetic part (H), a third-section tooth-top magnetic part (E), a third-section tooth-root magnetic part (C) and a fourth-section tooth-root magnetic part (G), wherein the cross section of at least one of the first-section tooth-top magnetic part (F), the first-section tooth-root magnetic part (D), the second-section tooth-root magnetic part (H), the third-section tooth-top magnetic part (E), the third-section tooth-root magnetic part (C) and the fourth-section tooth-root magnetic part (G) is rectangular or arc.
9. A scroll compressor characterized by: comprising a pump body structure according to any one of claims 1-8.
10. An air conditioner, characterized in that: including the scroll compressor of claim 9.
CN202110759008.6A 2021-07-05 2021-07-05 Pump body structure, scroll compressor and air conditioner Active CN113279960B (en)

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CN202110759008.6A CN113279960B (en) 2021-07-05 2021-07-05 Pump body structure, scroll compressor and air conditioner

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CN202110759008.6A CN113279960B (en) 2021-07-05 2021-07-05 Pump body structure, scroll compressor and air conditioner

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CN113279960B true CN113279960B (en) 2022-03-08

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU545656B2 (en) * 1980-09-30 1985-07-25 Sanden Corporation Scroll pump seal
US5145345A (en) * 1989-12-18 1992-09-08 Carrier Corporation Magnetically actuated seal for scroll compressor
JP2983325B2 (en) * 1991-04-26 1999-11-29 株式会社日本自動車部品総合研究所 Scroll compressor
CN108278204B (en) * 2018-02-07 2023-12-19 宁波汇峰聚威科技股份有限公司 Sealing device of vortex compressor
CN207999358U (en) * 2018-03-21 2018-10-23 宁波汇峰聚威科技股份有限公司 A kind of screw compressor that leakproofness is strong

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