CN104179683A - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
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- CN104179683A CN104179683A CN201410225015.8A CN201410225015A CN104179683A CN 104179683 A CN104179683 A CN 104179683A CN 201410225015 A CN201410225015 A CN 201410225015A CN 104179683 A CN104179683 A CN 104179683A
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- China
- Prior art keywords
- scroll
- convolution
- running shaft
- fixed scroll
- convolution scroll
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Classifications
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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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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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
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0269—Details concerning the involute wraps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
- F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
- F01C17/066—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with an intermediate piece sliding along perpendicular axes, e.g. Oldham coupling
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
Disclosed is a scroll compressor. An interference prevention portion is formed on a side wall surface of at least one of a fixed wrap and an orbiting wrap. Under the state that the centers of the fixed wrap and the orbiting wrap are consistent, the interference prevention portion is sunken outwards the orbiting radius of the orbiting wrap by taking the fixed wrap or the orbiting wrap as the reference. Under such configuration, the end of the fixed wrap does not interfere with the orbiting wrap at an arc compression surface of the orbiting wrap, but is inserted into the interference prevention portion. Accordingly, occurrence of a gap between the fixed wrap and the orbiting wrap can be prevented, and thus compression efficiency can be enhanced.
Description
Technical field
The present invention relates to scroll compressor, relate in particular to the running shaft scroll compressor overlapping with the scroll wraps of convolution scroll.
Background technique
The compressor that general scroll compressor is following mode,, under the state of the fixed scroll portion of fixed scroll and the convolution scroll wraps phase interlock of convolution scroll, convolution scroll is carried out circumnutation with respect to fixed scroll, make pressing chamber continuous moving between fixed scroll portion and convolution scroll wraps, this pressing chamber is formed by suction chamber, middle pressure chamber, discharge chamber, sucks thus and compression refrigerant.
In such scroll compressor, suck continuously, compress and discharge, therefore tool has the following advantages, that is, from the vibration that produces course of action and the angle of noise, more excellent than the compressor of other form.
At this, can decide according to the shape of fixed scroll portion and convolution scroll wraps the action characteristic of scroll compressor.Described fixed scroll portion and convolution scroll wraps can have arbitrary shape, but generally have the shape of the involute of easy processing.Described involute is equivalent to as lower curve,, is wound on while having the line that the basic circumference of any radius encloses the drawn track in end of line untiing that is.In the case of utilizing such involute, the constant thickness of scroll wraps and volume change is also constant, therefore should increase the number of turn of scroll wraps in order to obtain high compression ratio, but in this case, the size with compressor also becomes large shortcoming.
On the other hand, in described convolution scroll, generally on a side of hardboard that is circular plate shape, be formed with convolution scroll wraps, on the back side that is not formed with described convolution scroll wraps, be formed with axle bush portion, and described convolution scroll is connected the running shaft of its convolution with driving this convolution scroll.Due to can be with such shape, almost on whole of hardboard, form convolution scroll wraps, the diameter that therefore can be used in the hardboard portion that obtains identical compression ratio diminishes, but, on the other hand, when compression refrigerant the repulsion institute application of force point of action and for offsetting the point of action spaced distance in vertical direction of the counter-force institute application of force of repulsion, there are the following problems, that is, the action of the scroll that makes to circle round in course of action is unstable, thereby makes vibration or noise become large.
As the method that solves such problem, disclose running shaft 1 as shown in Figure 1 and be formed on the scroll compressor on the face identical with the scroll wraps 2a that circles round with the position of convolution scroll 2 combinations.The point of action of the repulsion of the refrigerant of such scroll compressor and the point of action of its counter-force act in same position, therefore can solve the problem that convolution scroll 2 tilts.
On the other hand, between described convolution scroll 2 and fixed scroll 3, be provided with the partition ring 4 for scroll 2 rotations that prevent from circling round.And described convolution scroll 2 and partition ring 4 come, in conjunction with carrying out relative movement, to lead back to vortex capstan 2 and carry out circumnutation by keyway 2b and key 4a.The tolerance clearance δ 1 that the keyway 2b of described convolution scroll 2 and the key 4a of partition ring 4 show greatly 10～30 μ m left and right carries out combination, so that convolution scroll 2 is slided with respect to partition ring 4.
But, in scroll compressor in the past as described above, as shown in Figure 2, due to the tolerance clearance δ 1 being formed between the convolution keyway 2b of scroll 2 and the key 4a of partition ring 4, in the time that carrying out circumnutation, convolution scroll 2 produces spin moment, due to this spin moment, privileged site between the convolution convolution scroll wraps 2a of scroll 2 and the 3a of fixed scroll portion of fixed scroll 2, when being formed on the middle mind-set circular arc compressing surface of the running shaft connecting part of convolution scroll 2 and drawing tangent line, centered by the point of contact of the circular arc compressing surface that meets with this tangent line, on the circular arc compressing surface of both sides, produce skew (offset) interval.Because convolution scroll 2 is offset in β between this deviate region, as shown in Figure 3, between convolution scroll wraps 2a and the 3a of fixed scroll portion, produce scroll wraps and interfere A, because this scroll wraps is interfered A, between the convolution scroll wraps 2a at other position and the 3a of fixed scroll portion, produce and reveal gap B, therefore have the problem that causes compression loss.
Summary of the invention
The object of the present invention is to provide a kind of scroll compressor, interfere by avoiding producing scroll wraps between convolution scroll and fixed scroll, reveal gap thereby can prevent from advance producing between scroll wraps.
In order to reach object of the present invention, comprise: seal container, fixed scroll, its secure bond is on described seal container, and there is fixed scroll portion, convolution scroll, it has the convolution scroll wraps that is meshed to form pressing chamber with described fixed scroll portion, be formed with running shaft connecting part at central position (center portion), be formed with the circular arc compressing surface that forms described pressing chamber at the periphery of described running shaft connecting part, this convolution scroll is carried out circumnutation with respect to described fixed scroll, running shaft, it has the eccentric part that the described fixed scroll of perforation combines with described convolution scroll, described eccentric part and described convolution scroll wraps are overlapping on the radial direction of compressor, in described fixed scroll portion or convolution scroll wraps, be formed with the portion that dodges that interferes, interfere to avoid producing scroll wraps between described fixed scroll portion and described convolution scroll wraps.
At this, the distance that the described interference portion of dodging separates is larger than the radius of gyration between described fixed scroll portion and convolution scroll wraps.
At this, described interference is dodged portion and can be formed on described circular arc compressing surface.
And initial point and terminal that portion is dodged in described interference can all belong to described circular arc compressing surface.
And, can also comprise partition ring, this partition ring combines with described convolution scroll, for preventing this convolution scroll rotation; Between described convolution scroll and partition ring, be formed with tolerance clearance, the maximum depth that portion is dodged in described interference is less than or equal to described tolerance clearance.
And, can in described convolution scroll, be formed with multiple keyways along radial direction, to close with the bond of described partition ring; To establish beeline between described keyway and the center of running shaft connecting part be L1, to establish beeline between center line and the center of running shaft connecting part between described convolution scroll wraps be L2, establish tolerance clearance between described partition ring and keyway is δ 1, establish described interference dodges the degree of depth of portion (side-play amount) for δ 2, the angle of rotation (radian) during for α of establishing described running shaft, calculate by δ 2=(δ 1 × (L2/L1)) ± 5 μ m.
And described running shaft can connect on the running shaft connecting part that described fixed scroll is combined in described convolution scroll.
In order to reach object of the present invention, following scroll compressor can be provided, , comprise: fixed scroll, it is formed with fixed scroll portion, convolution scroll, it has to be meshed with described fixed scroll portion and forms the convolution scroll wraps of the first and second pressing chamber at outer side surface and inner side surface, be formed with running shaft connecting part at central position, be formed with the circular arc compressing surface that forms described the first pressing chamber at the periphery of described running shaft connecting part, this convolution scroll is carried out circumnutation with respect to described fixed scroll, running shaft, it has eccentric part, described eccentric part and described convolution scroll wraps are overlapping on the radial direction of compressor, this running shaft is combined on the running shaft connecting part of described convolution scroll, in described circular arc compressing surface, first surface separates the distance of radius of gyration size, and this first surface is the primary importance that starts from this circular arc compressing surface till the curved surface of the second place arbitrarily, the second curved surface separates with the distance that is greater than radius of gyration, dodges portion thereby form described interference, and this second curved surface is from the described second place till carry out the curved surface of the 3rd position of circular arc compression, the 3rd curved surface separates the distance of radius of gyration size, and the 3rd curved surface is from described the 3rd position till the curved surface of the 4th position that circular arc compression finishes.
At this, the curvature of described the second curved surface can be greater than the curvature of described first surface or the curvature of described the 3rd curved surface.
And, can also comprise partition ring, this partition ring combines with described convolution scroll, for preventing this convolution scroll rotation; Between described convolution scroll and partition ring, be formed with tolerance clearance, the maximum depth of described the second curved surface can be less than or equal to described tolerance clearance.
And, can in described convolution scroll, be formed with multiple keyways along radial direction, to close with the bond of described partition ring; To establish beeline between described keyway and the center of running shaft connecting part be L1, to establish beeline between center line and the center of running shaft connecting part between described convolution scroll wraps be L2, establish tolerance clearance between described partition ring and keyway is δ 1, the degree of depth (side-play amount) of establishing described the second curved surface is δ 2, the angle of rotation (radian) during for α of establishing described running shaft, calculate by δ 2=(δ 1 × (L2/L1)) ± 5 μ m.
And described running shaft connects on the running shaft connecting part that described fixed scroll is combined in described convolution scroll.
In order to reach object of the present invention, following scroll compressor can be provided,, comprise: fixed scroll, it has fixed scroll portion, convolution scroll, it has to be meshed with described fixed scroll portion and forms the convolution scroll wraps of the first and second pressing chamber at outer side surface and inner side surface, this convolution scroll is carried out circumnutation with respect to described fixed scroll, running shaft, it has eccentric part, and described eccentric part and described convolution scroll wraps are overlapping on side, driver element, it drives described running shaft; Be formed with the running shaft connecting part of being combined with described eccentric part inner at the central part of described convolution scroll; On the inner peripheral surface of the inner end of described fixed scroll portion, be formed with lug boss, on the outer circumferential face of described running shaft connecting part, be formed with the recess that contacts to form pressing chamber with described lug boss; In described fixed scroll portion or convolution scroll wraps, be formed with the portion that dodges that interferes, the distance that this interference portion of dodging separates is larger than the radius of gyration between described fixed scroll portion and convolution scroll wraps.
At this, described interference is dodged portion and can be formed on described circular arc compressing surface.
And initial point and terminal that portion is dodged in described interference can all belong to described circular arc compressing surface.
And, can also comprise partition ring, this partition ring combines with described convolution scroll, for preventing this convolution scroll rotation; Between described convolution scroll and partition ring, be formed with tolerance clearance, the maximum depth that portion is dodged in described interference is less than or equal to described tolerance clearance.
And, can in described convolution scroll, be formed with multiple keyways along radial direction, to close with the bond of described partition ring; To establish beeline between described keyway and the center of running shaft connecting part be L1, to establish beeline between center line and the center of running shaft connecting part between described convolution scroll wraps be L2, establish tolerance clearance between described partition ring and keyway is δ 1, establish described interference dodges the degree of depth of portion (side-play amount) for δ 2, the angle of rotation (radian) during for α of establishing described running shaft, calculate by δ 2=(δ 1 × (L2/L1)) ± 5 μ m.
And, in described recess, can be along with the direction towards contrary with the movement direction of pressing chamber, in regulation is interval, the thickness of described running shaft connecting part increases; In described lug boss, with managing to make do towards the direction contrary with the movement direction of pressing chamber, the less thick of described fixed scroll portion in regulation is interval.
Scroll compressor of the present invention, on the side wall surface of at least one in fixed scroll portion and convolution scroll wraps, form the portion that dodges that interferes, this interference is dodged portion by making under the fixed scroll portion state consistent with the center of convolution scroll wraps, cave in and obtain outside the radius of gyration of convolution scroll wraps taking fixed scroll portion or convolution scroll wraps as benchmark, thereby the end that makes fixed scroll portion does not produce scroll wraps on the circular arc compressing surface in convolution scroll wraps interferes and inserts interference and dodge portion, thereby can prevent from producing gap between fixed scroll portion and convolution scroll wraps, improve thus compression efficiency.
Brief description of the drawings
Fig. 1 is the longitudinal sectional view that scroll compressor is in the past shown.
Fig. 2 is the convolution scroll of scroll compressor and the plan view of the bonding state that partition ring combines that Fig. 1 is shown.
Fig. 3 is the fixed scroll of scroll compressor and the plan view of the relation between scroll of circling round that Fig. 2 is shown.
Fig. 4 is the longitudinal sectional view that scroll compressor of the present invention is shown.
Fig. 5 is the stereogram that the press part of the scroll compressor of Fig. 4 is decomposed to illustrate.
Fig. 6 is the convolution scroll of scroll compressor and the plan view of the bonding state that partition ring combines that Fig. 5 is shown.
Fig. 7 is the plan view that the press part of the scroll compressor of Fig. 4 is shown.
Fig. 8 is the stereogram that the convolution scroll of the scroll compressor of Fig. 4 is shown.
Fig. 9 is the enlarged view of dodging portion for the interference of explanatory drawing 8.
Figure 10 is the fixed scroll of scroll compressor and the plan view of the relation between scroll of circling round that Fig. 4 is shown.
Figure 11 illustrates that the interference of the scroll compressor of Fig. 4 dodges other embodiment's of portion plan view.
Embodiment
Below, based on an embodiment shown in the drawings, be elaborated for scroll compressor of the present invention.
With reference to Fig. 4 to Fig. 9, scroll compressor of the present invention is provided with drive motor 20 in the inside of seal container 10, be fixedly installed the fixed scroll 30 being integrally formed with main frame at the upside of described drive motor 20, can be provided with convolution scroll 40 at the upside of described fixed scroll 30, this convolution scroll 40 and fixed scroll 30 phase interlocks, combine with the running shaft 23 of drive motor 20, carry out circumnutation on one side, on one side refrigerant is compressed.
Described seal container 10 comprises: casing 11 cylindraceous; Cover respectively the top of described casing 11 and bottom and upper body 12 and the lower case 13 of solder bond.On the side of described casing 11, suction pipe 14 can be provided with, discharge tube 15 can be provided with on the top of described upper body 12.Described lower case 13 is also brought into play the function for storing the oily oil-in chamber of supplying with so that compressor can move swimmingly.
Described drive motor 20 can comprise: stator 21, and it is fixed on the internal surface of casing 10; Rotor 22, it is positioned at the inside of described stator 21, by and stator 21 between interaction be rotated.Can be combined with the running shaft 23 with rotation together with this rotor 22 at described rotor 22 center.
Central part at described running shaft 23 has been formed through oily stream F along the length direction of running shaft 23, can be provided with oil pump 24 in the lower end of described running shaft 23, and this oil pump 24 is for being supplied to top by the oil being stored in lower case 13.The 23c of pin portion can be to be formed on the upper end of described running shaft 23 with respect to the mode of described running shaft Zhou center bias.
Described fixed scroll 30 can be pressed into and be fixed on casing 11 and upper body 12 in the mode of hot charging by its outer circumferential face, or combines by welding and casing 11 and upper body 12.
And, can be formed with axle bush portion 32 in the central authorities of the hardboard portion 31 of described fixed scroll 30, in described axle bush portion 32, can be formed with axis hole 33 so that running shaft 23 connects.On hardboard portion 31 upper surfaces of described fixed scroll 30, can be formed with fixed scroll portion 34, this fixed scroll portion 34 is meshed with aftermentioned convolution scroll wraps 42, on the outer side surface of this convolution scroll wraps 42, form the first pressing chamber S1, and on inner side surface, form the second pressing chamber S2.
Described convolution scroll 40 can be supported on the upper surface of fixed scroll 30.Described convolution scroll 40 is formed with the hardboard portion 41 of circular, is formed with convolution scroll wraps 42 on the upper surface of described hardboard portion 41, and this convolution scroll wraps 42 is meshed with fixed scroll portion 34, two couples of pressing chamber S1, S2 of formation continuous moving.Described pressing chamber S1, S2 can be made up of suction chamber, middle pressure chamber, discharge chamber respectively.And, on the central part of described hardboard portion 41, can be formed with the running shaft connecting part 43 of circular, the 23c of pin portion of running shaft 23 with the mode Intercalation that can rotate on this running shaft connecting part 43.
Can Intercalation on described running shaft connecting part 43 there is the 23c of pin portion of running shaft 23.The hardboard portion 31 that the described pin 23c of portion can connect described fixed scroll 30 is combined on the running shaft connecting part 43 of described convolution scroll 40.
Described convolution scroll wraps 42, fixed scroll portion 34 and the 23c of pin portion can be overlapping on the radial direction of compressor.At this, in the time of compressor compresses, the repulsion of refrigerant puts in fixed scroll portion 34 and convolution scroll wraps 42, puts between running shaft connecting part 43 and the 23c of pin portion as the compressive force of the counter-force of this repulsion.As mentioned above, connect the hardboard portion 41 of convolution scroll 40 overlapping on radial direction with scroll wraps in the situation that at the 23c of pin portion of running shaft 23, the repulsion of refrigerant and compressive force taking convolution scroll hardboard portion 41 as benchmark puts on same side, therefore can cancel each other out.
And, can be combined with the partition ring 50 for scroll 40 rotations that prevent from circling round at the upside of described convolution scroll 40.Described partition ring 50 can comprise: be clipped in the ring portion 51 of circular on hardboard portion 41 back sides of convolution scroll 40; To a side of described ring portion 51 outstanding a pair of first key 52 and a pair of the second key 53.
The thickness of hardboard portion 41 outer circumferential sides of the comparable convolution scroll 40 of described first key 52 is more outstanding, and is inserted in the inside that is formed on the first keyway 31a on fixed scroll 30.
Described the second key 53 can be to be clipped in respectively the combinations of states in the second keyway 41a, and this second keyway 41a is formed on the peripheral part of hardboard portion 41 of convolution scroll 40.
With regard to described the first keyway 31a, first key 52 or the second keyway 41a, the second key 53, be preferably formed for, sliding contact is carried out in the bi-side of the bi-side of each key 52,53 and each keyway 31a, 41a, if but each key 52,53 and each keyway 31a, too close contact of 41a in this case, make the surface friction drag between described key and keyway increase, thereby can not make described convolution scroll 40 carry out circumnutation smoothly.Therefore, as shown in Figure 6, between the bi-side of each keyway 31a, 41a and the bi-side of each key correspondingly 52,53, form and described key is slided swimmingly in keyway and the scroll 40 that can make to circle round is carried out the tolerance clearance δ 1 of the degree of circumnutation.
On the other hand, described fixed scroll portion 34 and convolution scroll wraps 42 can be formed as involute, but also can according to circumstances be formed as not being other curve of involute.With reference to Fig. 7, to establish 43 center, running shaft connecting part be O, establish two point of contact while being respectively P1, P2, known, the defined angle α of two straight lines by the center O that connects two point of contact P1, P2 and running shaft connecting part is less than 360 °, and the distance l between the normal vector of each point of contact is greater than 0 value.Thus, compare with the situation of convolution scroll wraps 42 with there is the fixed scroll portion 34 forming with involute by the first pressing chamber S1 before discharging, there is less volume (volume), therefore make compression ratio increase.And described convolution scroll wraps 42 and fixed scroll portion 34 are the shape that multiple circular arcs that diameter is differed from one another with initial point are connected, the curve of gabarit is the substantially elliptical shape with major axis and minor axis.
And, can near the inner end of described fixed scroll portion 34, be formed with the lug boss 35 side-prominent to described running shaft connecting part 43, also on described lug boss 35, be formed with the contacting part 35a outstanding from this lug boss 35.Thus, the thickness of the inner end of described fixed scroll portion can be greater than the thickness of other parts.
On the other hand, the thickness that starts fixed scroll portion 34 from point of contact P1 little by little diminishes, and this point of contact P1 is at the point of contact that is positioned at inner side of discharging in two point of contact that form the first pressing chamber S1 the zero hour in described contacting part 35a.Specifically, the second 35c of minimizing portion that forms the first minimizing portion 35b adjacent with described point of contact P1 and be connected with described the first minimizing portion, the thickness slip in described the first minimizing portion is greater than the thickness slip in the second minimizing portion.And in the regulation interval after described the second minimizing portion, the thickness of fixed scroll portion increases.
On described running shaft connecting part 43, can be formed with for the recess 45 of lug boss 35 phase interlocks.A sidewall of described recess 45 contacts to form a side joint contact P1 of the first pressing chamber S1 with the contacting part 35a of lug boss 35.
And a sidewall of described recess 45 can comprise: the first 45a of increase portion, its thickness increases sharply relatively; The second 45b of increase portion, it is connected with the first increase portion, and thickness increases with relatively little ratio.Corresponding with the first 35b of minimizing portion and second 35c of minimizing portion of described fixed scroll portion 34.Above-mentioned the first 45a of increase portion, the first 35b of minimizing portion, the second 45b of increase portion and the second 35c of minimizing portion obtain envelope to the bending of running shaft joint part.Thus, the inner side point of contact P1 that forms described the first pressing chamber S1 is positioned at the first increase portion and the second increase portion, and the length that is about to discharge the first pressing chamber is before shortened, and result can make compression ratio become large.
Another sidewall of described recess 45 can be formed as having the circular arc compressing surface 46 of circular shape in convolution scroll 40, and this circular shape is this convolution scroll 40 to be carried out to circumnutation and shape that the line that contacts with the end of fixed scroll portion 34 is formed by connecting.Decide the arc diameter of described circular arc compressing surface 46 by the scroll wraps thickness of fixed scroll portion end and the radius of gyration of convolution scroll wraps, if while increasing the scroll wraps thickness of described fixed scroll portion end, it is large that the diameter of circular arc also becomes.Thus, tool has the following advantages, that is, make circular arc convolution scroll wraps thickness around also increase to guarantee durability, makes the elongated compression ratio that makes the second pressing chamber of compressed path also increase so much.
In the scroll compressor of the present embodiment as above, in the time applying power supply to described drive motor 20 running shaft 23 rotated, carry out circumnutation with the convolution scroll 40 of these running shaft 23 eccentric combinations according to certain track, the pressing chamber P being formed between described convolution scroll 40 and fixed scroll 30 reduces volume to the center continuous moving of circumnutation, thereby repeatedly carries out sucking continuously a series of processes that compression refrigerant is discharged on one side on one side.
At this, described convolution scroll 40 is suppressed spinning motion by partition ring 50 on one side and carries out circumnutation on one side, but for described convolution scroll 40 and partition ring 50 are slided over each other, between convolution keyway 31a, the 41a of scroll 40 and the key of partition ring 50 52,53, need the roughly tolerance clearance δ 1 of 10～30 μ m left and right.But due to this tolerance clearance δ 1, convolution scroll 40 produces spin moment, in actual motion, as shown in Figure 3, may between fixed scroll portion 34 and convolution scroll wraps 42, produce scroll wraps and interfere A.
Consider above-mentioned situation, in the present embodiment, can be as shown in Figures 6 to 9, on the circular arc compressing surface 46 on the recess 45 that is formed on described convolution scroll 40, can form to interfere and dodge the 46a of portion, this interference is dodged the 46a of portion and have prescribed depth on the thickness direction of convolution scroll wraps 42.
Can with position making to have under the consistent state in fixed scroll portion 34 and convolution scroll wraps 42 center the so much interval r of radius of gyration differently, be formed with described interference and dodge the position of the 46a of portion and have described radius of gyration and interfere the degree of depth of the portion that dodges to be added and the interval r+ δ 2 that obtains.
For example, as shown in Figure 9, make to form that to interfere the initial point of second curved surface P12～P13 of dodging the 46a of portion to be positioned at first surface P11～P12 upper, first surface P11～P12 arrives the curved surface between second place P12 arbitrarily at the primary importance P11 that starts to carry out circular arc compression of the angle of rotation of described running shaft 23; Make to form and interfere the terminal of second curved surface of dodging the 46a of portion to be positioned on the 3rd curved surface, the 3rd curved surface is the curved surface between the 4th position P14 compressing to end at the 3rd position P13, and this three position P13 is the arbitrary position that is further rotated regulation angle of rotation from described second place P12.
And the degree of depth that the 46a of portion is dodged in described interference can be less than or equal to tolerance clearance δ 1.Be greater than tolerance clearance δ 1 if the degree of depth of the 46a of portion is dodged in described interference, may between fixed scroll portion 34 and convolution scroll wraps 42, produce gap compression performance is significantly reduced.
With reference to Fig. 6, in the angle of rotation (radian) of establishing running shaft 23 for α, to establish tolerance clearance be δ 1, establish beeline between the second keyway and the center of running shaft connecting part is L1, establish the center line between convolution scroll wraps and the beeline between the center of running shaft connecting part is L2, while establishing the degree of depth (side-play amount) of interfering the portion that dodges for δ 2, asks this δ 2 by following formula.
α × L1=δ 1 ... formula 1
α × L2=δ 2 ... formula 2
By in formula 1 substitution formula 2, δ 2=δ 1 × (L2/L1).
For example, be that beeline L1 between 30 μ m, the second keyway 41a and 43 center, running shaft connecting part is that center line between 53mm, convolution scroll wraps and the beeline L2 between the center of running shaft connecting part are 23mm at tolerance clearance δ 1, the degree of depth (side-play amount) δ 2 that interferes the portion that dodges is δ 2=30 × 23/53=13.0 μ m.The degree of depth of therefore, preferably interfering the portion that dodges is for by the value that δ 2=(δ 1 × (L2/L1)) ± 5 μ m calculate.
Thus, as shown in figure 10, the end of described fixed scroll portion 34 does not produce scroll wraps and interferes and insert to interfere and dodge the 46a of portion on the circular arc compressing surface 46 of convolution scroll wraps 42, thereby can prevent from producing gap between fixed scroll portion 34 and convolution scroll wraps 42, thereby improve compression efficiency.
On the other hand, in the above-described embodiments, described interference is dodged the 46a of portion and is formed on the circular arc compressing surface 46 of convolution scroll 42, but in the present embodiment, also can be as shown in figure 11, be formed near the top of fixed scroll portion 34 of the fixed scroll corresponding with the circular arc compressing surface 46 of described convolution scroll 40 30.
In this case, the 32a of portion is dodged in described interference also can be in the interval scope of carrying out circular arc compression as benchmark taking convolution scroll 40, on the outer circumferential face of the fixed scroll portion 34 of joining with this circular arc compressing surface 46, on the thickness direction of this fixed scroll portion 34, there is the degree of depth of regulation.
At this, preferably, as above-described embodiment, the degree of depth that makes described interference dodge the 32a of portion is less than or equal to, and is formed on the tolerance clearance δ 1 between the convolution keyway 41a of scroll 40 and the key 53 of partition ring 50.Its action effect and above-described embodiment are similar, and therefore description thereof is omitted.
Claims (9)
1. a scroll compressor, is characterized in that,
Comprise:
Seal container,
Fixed scroll, its secure bond, on described seal container, and has fixed scroll portion,
Convolution scroll, it has the convolution scroll wraps that is meshed to form pressing chamber with described fixed scroll portion, be formed with running shaft connecting part at central position, be formed with the circular arc compressing surface that forms described pressing chamber at the periphery of described running shaft connecting part, this convolution scroll is carried out circumnutation with respect to described fixed scroll
Running shaft, it has the eccentric part combining with described convolution scroll, and described eccentric part and described convolution scroll wraps are overlapping on the radial direction of compressor;
In described fixed scroll portion or convolution scroll wraps, be formed with the portion that dodges that interferes, the distance that this interference portion of dodging separates is larger than the radius of gyration between described fixed scroll portion and convolution scroll wraps.
2. scroll compressor according to claim 1, is characterized in that, the described interference portion of dodging is formed on described circular arc compressing surface.
3. scroll compressor according to claim 2, is characterized in that, initial point and terminal that portion is dodged in described interference all belong to described circular arc compressing surface.
4. scroll compressor according to claim 1, is characterized in that,
Also comprise partition ring, this partition ring combines with described convolution scroll, for preventing this convolution scroll rotation,
Between described convolution scroll and partition ring, be formed with tolerance clearance, the maximum depth that portion is dodged in described interference is less than or equal to described tolerance clearance.
5. scroll compressor according to claim 4, is characterized in that,
In described convolution scroll, be formed with multiple keyways along radial direction, to close with the bond of described partition ring,
To establish beeline between described keyway and the center of running shaft connecting part be L1, to establish beeline between center line and the center of running shaft connecting part between described convolution scroll wraps be L2, establish tolerance clearance between described partition ring and keyway is δ 1, the angle of rotation of establishing described interference to dodge the degree of depth of portion be δ 2, establishing described running shaft is while being α, calculate by δ 2=(δ 1 × (L2/L1)) ± 5 μ m.
6. scroll compressor according to claim 1, is characterized in that,
Described circular arc compressing surface separates radius of gyration size from the side wall surface of described fixed scroll portion,
In described circular arc compressing surface, first surface separates the distance of radius of gyration size, and this first surface is the primary importance that starts from this circular arc compressing surface till the curved surface of the second place arbitrarily; The second curved surface be greater than radius of gyration distance separate, dodge portion thereby form described interference, this second curved surface is from the described second place till carry out the curved surface of the 3rd position of circular arc compression; The 3rd curved surface separates the distance of radius of gyration size, and the 3rd curved surface is from described the 3rd position till the curved surface of the 4th position that circular arc compression finishes.
7. scroll compressor according to claim 6, is characterized in that,
The curvature of described the second curved surface is greater than the curvature of described first surface or the curvature of described the 3rd curved surface.
8. according to the scroll compressor described in any one in claim 1 to 7, it is characterized in that,
On the inner peripheral surface of the inner end of above-mentioned fixed scroll portion, be formed with lug boss, on the outer circumferential face of described running shaft connecting part, be formed with the recess that contacts to form pressing chamber with described lug boss,
In described recess, along with the direction towards contrary with the movement direction of pressing chamber, in regulation is interval, the thickness of described running shaft connecting part increases,
In described lug boss, along with the direction towards contrary with the movement direction of pressing chamber, the less thick of described fixed scroll portion in regulation is interval.
9. scroll compressor according to claim 8, is characterized in that, described running shaft connects on the running shaft connecting part that described fixed scroll is combined in described convolution scroll.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130059180A KR101978961B1 (en) | 2013-05-24 | 2013-05-24 | Scroll compressor |
| KR10-2013-0059180 | 2013-05-24 |
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| Publication Number | Publication Date |
|---|---|
| CN104179683A true CN104179683A (en) | 2014-12-03 |
| CN104179683B CN104179683B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410225015.8A Active CN104179683B (en) | 2013-05-24 | 2014-05-26 | Scroll compressor |
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| Country | Link |
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| EP (1) | EP2806166B1 (en) |
| KR (1) | KR101978961B1 (en) |
| CN (1) | CN104179683B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735790A (en) * | 2018-07-18 | 2020-01-31 | 翰昂汽车零部件有限公司 | Scroll compressor having a discharge port |
| CN113513472A (en) * | 2020-04-10 | 2021-10-19 | 艾默生环境优化技术(苏州)有限公司 | Non-orbiting scroll of scroll compressor, intermediate member for manufacturing non-orbiting scroll, and method |
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| EP0907024A1 (en) * | 1997-09-16 | 1999-04-07 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Scroll type compressor |
| CN1847657A (en) * | 2005-10-21 | 2006-10-18 | 兰州理工大学 | Non-lubricated vortex compressor for fuel cell |
| JP2008031848A (en) * | 2006-07-26 | 2008-02-14 | Matsushita Electric Ind Co Ltd | Scroll compressor |
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| CN103047136A (en) * | 2011-10-11 | 2013-04-17 | Lg电子株式会社 | Scroll compressor with bypass hole |
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| JP3495216B2 (en) * | 1997-01-28 | 2004-02-09 | 株式会社日立製作所 | Scroll compressor |
| US6527526B2 (en) | 2000-12-07 | 2003-03-04 | Lg Electronics, Inc. | Scroll compressor having wraps of varying thickness |
| US7128540B2 (en) * | 2001-09-27 | 2006-10-31 | Sanyo Electric Co., Ltd. | Refrigeration system having a rotary compressor |
| KR101587172B1 (en) * | 2009-12-08 | 2016-01-21 | 엘지전자 주식회사 | Scroll compressor |
| JP2012097677A (en) | 2010-11-03 | 2012-05-24 | Denso Corp | Variable displacement scroll compressor |
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- 2013-05-24 KR KR1020130059180A patent/KR101978961B1/en active IP Right Grant
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- 2014-05-23 EP EP14169609.6A patent/EP2806166B1/en active Active
- 2014-05-26 CN CN201410225015.8A patent/CN104179683B/en active Active
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|---|---|---|---|---|
| EP0907024A1 (en) * | 1997-09-16 | 1999-04-07 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Scroll type compressor |
| CN1847657A (en) * | 2005-10-21 | 2006-10-18 | 兰州理工大学 | Non-lubricated vortex compressor for fuel cell |
| JP2008031848A (en) * | 2006-07-26 | 2008-02-14 | Matsushita Electric Ind Co Ltd | Scroll compressor |
| CN101828038A (en) * | 2007-10-19 | 2010-09-08 | Lg电子株式会社 | Scroll compressor |
| CN103047136A (en) * | 2011-10-11 | 2013-04-17 | Lg电子株式会社 | Scroll compressor with bypass hole |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110735790A (en) * | 2018-07-18 | 2020-01-31 | 翰昂汽车零部件有限公司 | Scroll compressor having a discharge port |
| CN110735790B (en) * | 2018-07-18 | 2022-03-04 | 翰昂汽车零部件有限公司 | Scroll compressor having a discharge port |
| CN113513472A (en) * | 2020-04-10 | 2021-10-19 | 艾默生环境优化技术(苏州)有限公司 | Non-orbiting scroll of scroll compressor, intermediate member for manufacturing non-orbiting scroll, and method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2806166A3 (en) | 2015-05-06 |
| KR20140137919A (en) | 2014-12-03 |
| EP2806166B1 (en) | 2016-04-20 |
| EP2806166A2 (en) | 2014-11-26 |
| CN104179683B (en) | 2016-12-07 |
| KR101978961B1 (en) | 2019-09-03 |
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