CN1673542A - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
- Publication number
- CN1673542A CN1673542A CNA2005100559670A CN200510055967A CN1673542A CN 1673542 A CN1673542 A CN 1673542A CN A2005100559670 A CNA2005100559670 A CN A2005100559670A CN 200510055967 A CN200510055967 A CN 200510055967A CN 1673542 A CN1673542 A CN 1673542A
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- Prior art keywords
- helical coil
- peripheral surface
- inner peripheral
- scroll
- end plate
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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
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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
Abstract
The purpose of this invention is to increase the strength of a lap tip part of a scroll compressor and to reduce power loss caused by excessive compression. A fixed scroll 10 and a movable scroll 20 with spiral laps 13, 23 erected on the inner surfaces of end plates 11, 21 respectively are joined to form compression chambers P1, P2 variable in volume between both laps. A scroll start point A of each outer peripheral surface 13a separates from an inner peripheral surface when going over a scroll start point C which is near a seal off position of each inner peripheral surface 13b, and both compression chambers communicate with a center chamber P3. Each lap is formed large in the thickness of a center side tip part, and the inner surface abutting on the center chamber of at least one end plate is formed with counter boring parts 15, 25 communicating the center chamber with at least one of both compression chambers P1, P2 when the scroll start point on the outer peripheral surface goes over a part near the scroll start point on the inner peripheral surface.
Description
Technical field
The present invention relates to a kind of scroll compressor, particularly can reduce the scroll compressor of the power loss that overcompression causes.
Background technique
The scroll compressor of the power loss that causes as such minimizing overcompression has the spy and opens disclosed technology in the 2000-120565 communique (patent documentation 1).It is a kind of scroll compressor of following formation: fixed scroll and the interlock of rotation scroll, described fixed scroll, has the upright Vorticose helical coil that constitutes by involute curve of establishing on the end plate in the hole that spues in central authorities, described rotation scroll, establishing the Vorticose helical coil that constitutes by involute curve facing to standing on the end plate of this fixed scroll, formation is by a plurality of a pair of pressing chambers that constitute, the beginning volume part of each scroll helical coil constitutes: roll up the external arc that point is connected with the beginning of outside involute curve sleekly by the helical coil front end, the interior circular arc that is connected with the beginning volume point of inboard involute curve forms discontinuously, the central point of external arc is arranged on the tangent line of basic circle of the beginning volume point by outside involute curve, and the contact of external arc and interior circular arc is arranged on the straight line of central point of the central point that is connected external arc and interior circular arc.According to such formation, can enlarge the gas passageway after spuing, reduce the increase of the compressor input that the resistance that spues causes, obtain improving the effect of compressor efficiency.
Patent documentation 1: the spy opens 2000-120565 communique (paragraph [0006], paragraph [0015], Fig. 2～Fig. 4)
In the scroll of the prior art in the past shown in Figure 7 of patent documentation 1, the inboard involute curve of helical coil, interior circular arc is not set, extend to the external arc of front end and connect, each butt position of the outside involute of one side's helical coil and the opposing party's inboard involute, follow the rotation of movable scroll, the forward end side shifting, the volume of each pressing chamber reduces.Before the value of the delivery pressure that when the compression ratio of each pressing chamber becomes specified running, obtains stipulating, the butt position of the outside involute of one side's helical coil arrives beginning volume point, the butt position of the inboard involute of the opposing party's helical coil arrives the sealed-off position simultaneously, the beginning volume point of the outside involute of one side's helical coil is crossed the sealed-off position and is compared its side shifting near the center, this beginning volume point then leaves inboard involute so, set the size relationship of each several part, so that two pressing chambers and the central part that is formed at two helical coil and the central compartment that is provided with the hole that spues are communicated with.Rotate the angle of swing of scroll relatively, the rate of departure of this volume point that begins is little, and each pressing chamber after therefore just having begun to spue and the connection area of the gas passageway between the central compartment are not enough, thereby the interior gas in overpressure of pressing chamber contracts the generation power loss.If after the beginning of the outside involute of a side helical coil, the volume point was crossed the sealed-off position, the rotation scroll was further rotated suitable angle, the part in the hole that then spues is to a side pressing chamber opening, and this pressing chamber is communicated with the hole that directly spues.This pressing chamber that only is communicated with a side carries out, and shown in the dotted line d of Figure 10, and it is slow that opening begins angle, and it is also little to be communicated with the ratio that area increases.
To this, in patent documentation 1, setting is rolled up the interior circular arc that point is connected discontinuously with the beginning of the inboard involute of helical coil, because circular arc is positioned at from the outside of beginning volume point facing to the prolongation of the inboard involute of basic circle in this, thereby in the rotation of rotation scroll, the beginning volume point of outside involute curve is crossed under the state as near the volume point of the beginning the sealed-off position of inboard involute, gap between the beginning volume point of outside involute curve and the interior circular arc of inboard involute, compare change greatly with the former prior art that interior circular arc is not set, can obtain above-mentioned effect thus.Yet, in the technology of above-mentioned patent documentation 1, for the gas passageway area of fully guaranteeing to spue after beginning, fully prevent overcompression, need make the thickness of central side front end of helical coil a lot of from the less thick of the helical coil of the relative front of beginning of inboard involute volume point beginning, thereby when considering durability, the strength deficiency of this central side front end, following worry increases: produce because the damage that power caused that causes as the slip of the scroll of opposite side, pressurized gas etc.
Summary of the invention
The object of the invention is, make the thickness increase compared with the past of at least a portion of the front end of helical coil, the intensity of the front end of helical coil is increased, and as the inner face of the end plate central authorities of scroll and establish spot-facing portion, prevent the damage of front end of the helical coil of scroll thus, and reduce the pressure loss that overcompression causes.
For this reason, scroll compressor of the present invention, be constructed as follows: make at the upright fixed scroll of Vorticose fixed side helical coil of establishing of the inner face of fixed side end plate, found the movable scroll joint of establishing Vorticose movable side helical coil with inner face in movable side end panel, so that a side's of two helical coil outer circumferential face and the opposing party's inner peripheral surface join, between this two helical coil, form the rotation of following movable scroll relative fixed scroll, volume reduces gradually, and at least one pair of the pressing chamber that moves to central side simultaneously, rotation continues, when beginning of the vortex of each outer circumferential face volume point is crossed near the sealed-off position of each inner peripheral surface, this beginning volume point leaves inner peripheral surface, two pressing chambers are communicated with the central compartment of the central part that is formed at two helical coil, the hole that spues is communicated with the central compartment therewith, it is characterized in that, each inner peripheral surface of each helical coil, make the beginning volume at least a portion of going back the front end of close central side that likens to the inner peripheral surface of sealed-off position, in the scope that the beginning volume point with the outer circumferential face of butt helical coil does not thereon disturb, become the concave arc surface of the inboard that enters the original vortex filament of inner peripheral surface, make as the thickness of at least a portion of the front end of the central side of each helical coil and become big as near the thickness of this helical coil of the front the sealed-off position relatively, on the inner face that joins with the central compartment of at least one side's of these external two helical coil end plate, spot-facing portion is set, described spot-facing portion continues in rotation, when beginning of each outer circumferential face volume point is crossed near the beginning volume point of each inner peripheral surface, the central compartment is communicated with at least one side in two pressing chambers.
According to above-mentioned scroll compressor, the preferred spot-facing portion that on a side end plate, forms at least, for the spin axis direction from movable scroll is seen as circle, from forming to the sealed-off locality off-centre of founding the inner peripheral surface of being located at the helical coil on this end plate near the hole that spues.
According to above-mentioned scroll compressor, the preferred spot-facing portion that on a side end plate, forms at least, for the spin axis direction from movable scroll is seen as ellipse, from extending and form to the upright sealed-off locality of being located at the inner peripheral surface of the helical coil on this end plate near the hole that spues.
According to above-mentioned scroll compressor, the preferred spot-facing portion that on a side end plate, forms at least, for the spin axis direction from movable scroll be seen as fan-shaped, from extending and form to the upright sealed-off locality of being located at the inner peripheral surface of the helical coil on this end plate near the hole that spues.
According to the present invention, because each inner peripheral surface of each helical coil, make the beginning volume at least a portion of going back the front end of close central side that likens to the inner peripheral surface of sealed-off position, in the scope that the beginning volume point with the outer circumferential face of butt helical coil does not thereon disturb, become the concave arc surface of the inboard that enters the original vortex filament of inner peripheral surface, make as the thickness of at least a portion of the front end of the central side of each helical coil and become big as near the thickness of this helical coil of the front the sealed-off position relatively, even thereby consideration durability, do not have the situation of the front end strength deficiency of helical coil yet, can not produce since with slip as the scroll of opposite side, the damage that power caused of generations such as pressurized gas.If do so in addition, cross at the beginning volume point of the outer circumferential face of a side helical coil under the opposing party's the state of sealed-off position of inner peripheral surface of helical coil, compare with the technology of patent documentation 1, the beginning volume point of outer circumferential face and the gap between the concave-arc part reduce, but in technological scheme 1 except that above-mentioned, also form spot-facing portion, described spot-facing portion continues in rotation, when beginning of the vortex of each outer circumferential face volume point is crossed near the sealed-off position of each inner peripheral surface, the central compartment is communicated with at least one side in two pressing chambers, thereby cross at the beginning volume point of the outer circumferential face of a side helical coil under near the beginning volume point of inner peripheral surface the state, at least one square tube of this pressing chamber is crossed this spot-facing portion and is communicated with the central compartment, described central compartment is communicated with the hole that spues, and the connection area between pressing chamber and the central compartment is fully increased.The front end that does not have helical coil thus produces the damage that strength deficiency causes, and can reduce the power loss of the scroll compressor that overcompression causes.
According to the spot-facing portion that on a side end plate, forms at least, be seen as circle from the spin axis direction of movable scroll, from near the present invention who forms to the sealed-off locality off-centre of founding the inner peripheral surface of being located at the helical coil on this end plate the hole that spues, because the easy processing of spot-facing portion, thereby can reduce manufacture cost.
According to the spot-facing portion that on a side end plate, forms at least, be seen as ellipse from the spin axis direction of movable scroll, from extending and the present invention of formation to the upright sealed-off locality of being located at the inner peripheral surface of the helical coil on this end plate near the hole that spues, because the circular relatively spot-facing portion area of oval-shaped spot-facing portion is little, thereby the influence near the parts of the inner face central authorities of the end plate that is installed in scroll is tailed off.
According to the spot-facing portion that on a side end plate, forms at least, for the spin axis direction from movable scroll is seen as fan-shaped, from extending and the present invention of formation to the upright sealed-off locality of being located at the inner peripheral surface of the helical coil on this end plate near the hole that spues, be positioned at the beginning volume point of each outer circumferential face of the helical coil of the opposing party's scroll under near the state the beginning volume point of each inner peripheral surface of helical coil of side's scroll, because as the peripheral part of the great circle arcuation of the sealed-off side that is formed at the fan-shaped spot-facing portion on a side the scroll, roughly along the outer circumferential face of the front end of the helical coil of the opposing party's scroll.If thereby movably scroll is crossed this position and is rotated, and then increases hastily by two pressing chambers of spot-facing portion and the connection area between the central compartment.Therefore, also can reduce the power loss of the scroll compressor that overcompression causes even under the thickness that makes its front end for the intensity of the front end that improves helical coil becomes big situation.
Description of drawings
Fig. 1 is the main pseudosection of central part of first mode of execution of scroll compressor of the present invention.
Fig. 2 is that the 2-2 of Fig. 1 is to sectional view
Fig. 3 is the identical main pseudosection of Fig. 1 with the state of movable scroll rotation.
Fig. 4 is the plan view of shape of the central part of expression scroll.
Fig. 5 is the transverse sectional view of the variation of expression first mode of execution.
Fig. 6 be variation shown in Figure 5 central part with and the main pseudosection of periphery.
Fig. 7 is the main pseudosection of central part of second mode of execution of scroll compressor of the present invention.
Fig. 8 is the central part and the peripheral main pseudosection thereof of the deformation force of second mode of execution.
Fig. 9 is the main pseudosection of central part of the 3rd mode of execution of scroll compressor of the present invention.
Figure 10 is the figure that represents the variation characteristic of the pressing chamber of angle of rotation of relatively movable scroll and the connection area between the central compartment.
Embodiment
At first first mode of execution of scroll compressor of the present invention is described according to Fig. 1～Fig. 4, main as Fig. 1 and shown in Figure 2, the scroll compressor of this mode of execution, by fixed side end plate 11 and the upright fixed scroll 10 of Vorticose fixed side helical coil 13 of establishing of face within it, with movable side end panel 21 and within it face set up the movable scroll 20 of Vorticose movable side helical coil 23 to constitute, movable scroll 20, the peripheral part of the inner face of its movable side end panel 21 is connected to upright upper-end surface (reference is variation as shown in Figure 5) of establishing the side perisporium 12 on the peripheral part that is fixed on fixed side end plate 11 slidably, and being assembled into can the 10 no rotations ground rotation of relative fixed scroll.These two scroll, 10,20 following joints: the inner peripheral surface 23b of the outer circumferential face 13a of fixed side helical coil 13 and movable side helical coil 23 is at the mutual butt in a plurality of positions, between them, form a plurality of first pressing chamber P1, and the outer circumferential face 23a of movable side helical coil 23 and the inner peripheral surface 13b of fixed side helical coil 13 are at the mutual butt in a plurality of positions, and forming a plurality of second compressions between them is P2.This two pressing chamber P1, P2 follow the rotation of the relative fixed scroll 10 of movable scroll 20, and volume reduces gradually and moves to central side, and the gas that portion is within it enclosed compresses.
Form the P3 of central compartment at the central part that is becoming two helical coil 13,23 between the two end plates 11,21, the inner face of each end plate 11,12 that joins at the P3 of central compartment therewith forms circular spot-facing portion 15,25.The hole 16 that spues of the circle that is communicated with the P3 of central compartment by this spot-facing portion 15 connects on the spin axis direction of movable scroll 20 and is formed on this fixed scroll 10, at the outlet side in hole 16 that spues, be provided for allowing the outflow of gas, the leaf valve 17 that stops gas to flow into.
Then the shape of each helical coil 13,23 is described according to Fig. 4.Below, though the shape of explanation fixed side helical coil 13, under the situation of symmetric shape scroll, the shape of two helical coil 13,23 is identical.The outer circumferential face 13a of fixed side helical coil 13 and inner peripheral surface 13b are made of the part of the involute curve of total basic circle G.The involute curve of the outer circumferential face 13a of fixed side helical coil 13 is from a beginning volume point A, and double dot dash line H1 represents to arrive the prolongation of the basic circle G of abridged involute curve.The whose forwardmost end portions of fixed side helical coil 13 is to be convex arc surface (convex globoidal) 13c of radius centered R2 with the some O2 on the tangent line of the basic circle G by beginning volume point A.The inner peripheral surface 13b of fixed side helical coil 13 is made of involute curve portion and concaved circular cambered surface 13d, involute curve portion is from beginning volume point C, double dot dash line H2 represents to arrive the prolongation of the basic circle G of abridged involute curve, also becomes the part of central side than the beginning volume point C of inner peripheral surface 13b.Be to be concaved circular cambered surface (concave arc surface) 13d of radius centered R1 with an O1, its front end is by being connected with convex arc surface 13c with line part 13e that concaved circular cambered surface 13d and convex arc surface 13c join.The concaved circular cambered surface 13d of this mode of execution is from the outside of beginning volume point C for the extending portion H2 of the involute curve of inner peripheral surface 13d, a D therewith extending portion H2 intersect and enter its inboard shape.Concaved circular cambered surface 13d enters the thickness of front end of fixed side helical coil 13 of the inboard of extending portion H2, and is shown in symbol I, also bigger than the thickness of the fixed side helical coil 13 of the beginning volume point forward side of C (central side and opposition side).The beginning volume point C of inner peripheral surface 13b, the 23b of each helical coil 13,23 in this first mode of execution sets near the above-mentioned sealed-off position.
The spot-facing portion 15 of fixed side end plate 11, be arranged on the inner face that joins with the P3 of central compartment, be seen as circle from the spin axis direction of movable scroll 20, the encirclement hole 16 and eccentric and form towards the sealed-off locality of the inner peripheral surface 13b of the fixed side helical coil 13 of fixed side end plate 11 that spues, the degree of depth is certain.Be formed at the spot-facing portion 25 on the movable side end panel 21, except hole 16 this point that do not spue, identical with spot-facing portion 15 with the position relation of movable side helical coil 23.This spot-facing portion 15,25, as shown in Figure 1, in helical coil 13, each outer circumferential face 13a of 23, the beginning volume point A of 23a is positioned at helical coil 23, each inner peripheral surface 23b of 13, under near the state of the beginning volume point C of 13b, not with each pressing chamber P1, P2 is communicated with, but as Fig. 2 and shown in Figure 3, if helical coil 13, each outer circumferential face 13a of 23, the beginning volume point A of 23a crosses helical coil 23, each inner peripheral surface 23b of 13, near beginning of 13b volume point C and enter each 23d of inner arc portion, in the scope of 13d, then with each pressing chamber P1, P2 is communicated with, by this spot-facing portion 15,25 make each pressing chamber P1, P2 is communicated with the P3 of central compartment.From the first and second pressing chamber P1, P2 is to the connection in the hole 16 that spues, have through helical coil 13,23 outer circumferential face 13a, beginning volume point A and the inner peripheral surface 23b of 23a, the 23d of inner arc portion of 13b, gap d between the 13d is finished, with by above-mentioned spot-facing portion 15,25 finish, based on the latter from two pressing chamber P1, P2 is to the connection in the hole 16 that spues, shown in the characteristic of the solid line a of Figure 10, compare with the characteristic of dotted line d in the technology of above-mentioned patent documentation 1, to begin than angle of rotation early, its increase ratio that is communicated with area is also big, and because the first pressing chamber P1 and the second pressing chamber P2, two sides and 15,25 are communicated with, thereby compare two pressing chamber P1 with the technology of patent documentation 1, P2 and the connection area that spues between the hole 16 are quite big.
In this first mode of execution as constituted above, follow the rotation of movable scroll 20 relative fixed scroll 10, volume reduces gradually, to enclosing the pressing chamber P1 that its gas inside is compressed, P2, in helical coil 13, each outer circumferential face 13a of 23, the beginning volume point A of 23a arrives helical coil 23, each inner peripheral surface 23b of 13, the beginning volume point C of 13b, before becoming predetermined delivery pressure, as shown in Figure 1, though be not communicated with the P3 of central compartment, but near beginning volume point A arrives beginning volume point C, become after the predetermined delivery pressure, as Fig. 2 and shown in Figure 3, outer circumferential face 13a at first, the beginning volume point A of 23a is from inner peripheral surface 23b, the 23d of inner arc portion of 13b, 13d leaves, with each pressing chamber P1, P2 is communicated with, follow spot-facing portion 15,25 with pressing chamber P1, P2 is communicated with, pressing chamber P1, connection area between P2 and the P3 of central compartment increases.
According to the first such mode of execution, the thickness of the front end of each helical coil 13,23, because roll up the thickness of each helical coil 13,23 of the forward side of some C compares greatly than the beginning, even thereby when considering durability, do not have the situation of the front end strength deficiency of helical coil 13,23 yet, can not produce since with the damage that power caused as generations such as the slip of the scroll 10,20 of opposite side, pressurized gass.In addition in view of the above, cross at the beginning volume point A of the outer circumferential face 13a (23a) of a side helical coil 13 (23) under the opposing party's the state of sealed-off position of inner peripheral surface 13a (23a) of helical coil 23 (13), compare with the technology of patent documentation 1, the gap d between the beginning volume point A of outer circumferential face 23b (13b) and the 23d of inner arc portion (13d) of inner peripheral surface 23b (13b) reduces.Yet in this first mode of execution, as mentioned above, spot-facing portion 15,25 is communicated with pressing chamber P1, P2, and the connection area between pressing chamber P1, P2 and the P3 of central compartment increases.Therefore the front end in the helical coil 13,23 of each scroll 10,20 can not produce the damage that strength deficiency causes, and the power loss of the scroll compressor that overcompression causes is reduced.
In as Fig. 5 and variation shown in Figure 6, for the wearing and tearing between the end face of the helical coil 23 (13) of the inner face of the end plate 11 (21) of the side's that prevents mutual butt scroll 10 (20) and the opposing party's scroll 21 (20), on the part of inner face except helical coil 13,23 of each end plate 11,21, be glued with the Vorticose wearing and tearing that constitute by thin plate (for example thickness is the iron plate of 0.3mm) and prevent plate 18,28.
In this variation, prevent in each wearing and tearing between the inner face of plate 18,28 and each end plate 11,21, as shown in Figure 5, produce the suitable height difference of thickness of slab e that prevents plate 18,28 with wearing and tearing.Main pseudosection as shown in Figure 6 in addition, these wearing and tearing prevent that plate 18,28 from need not join with spot-facing portion 15, the front end 18a of this central side, what can not form in order to prevent clot is sharp-pointed, and it is sizable circular-arc to need to form radius.Therefore, arrive at the beginning volume point A of the outer circumferential face 23a of movable side helical coil 23 under the shown position of beginning volume point C of outer circumferential face 13a of fixed side helical coil 13, near the root of the circular-arc front end 18a that prevents plate 18 from wearing and tearing in scope shown near the symbol 1 the beginning volume point C, between the end face of the movable side helical coil 23 of the inner face of the fixed side end plate 11 of fixed scroll 10 and movable scroll 20, produce the suitable gap e of thickness of slab that prevents plate 18 with wearing and tearing, by this gap e, the P3 of central compartment is communicated with the second pressing chamber P2.This gap e, owing to arrive the beginning volume point C of the outer circumferential face 13a of fixed side helical coil 13 at the beginning volume point A of the outer circumferential face 23a of movable side helical coil 23, the second pressing chamber P2 arrives before the predetermined delivery pressure, the second pressing chamber P2 is communicated with the P3 of central compartment, thereby reaches gas in the P3 of central compartment of predetermined delivery pressure to the second pressing chamber P2 internal leakage.Similarly, the gas in the P3 of central compartment is also to the first pressing chamber P1 internal leakage.Because the gas of this leakage recompresses by pressing chamber P1, P2, thereby the problem that exists the efficient of scroll compressor to reduce.
This problem reduces by second mode of execution as shown in Figure 7.In this second mode of execution, be arranged on the 15A of spot-facing portion of the inner face that the P3 of central compartment with fixed side end plate 11 joins, be seen as ellipse from the spin axis direction of movable scroll 20, its both sides join with the periphery in the hole 16 that spues, sealed-off locality to the inner peripheral surface 13b of the fixed side helical coil 13 of fixed side end plate 11 extends abreast, the front end circular arc be positioned at the sealed-off position slightly in the inner part.Form the 25A of spot-facing portion of movable side end panel 21, except hole 16 this point that do not spue, the position relation of movable relatively side helical coil 23 is identical with the 15A of spot-facing portion.Except the structure of second mode of execution of the 15A of spot-facing portion, 25A identical with first mode of execution.The 15A of spot-facing portion, 25A, as shown in Figure 7, in helical coil 13, each outer circumferential face 13a of 23, the beginning volume point A of 23a is positioned at helical coil 23, each inner peripheral surface 23b of 13, under near the beginning volume point C of 13b the state, though not with each compression P1, P2 is communicated with, but it is identical with first mode of execution, if helical coil 13, each outer circumferential face 13a of 23, the beginning volume point A of 23a crosses helical coil 23, each inner peripheral surface 23b of 13, near beginning of 13b volume point C and enter each 23d of inner arc portion, in the scope of 13d, then with each pressing chamber P1, P2 is communicated with, by the 15A of this spot-facing portion, 25A makes each pressing chamber P1, P2 is communicated with the P3 of central compartment.The 15A of spot-facing portion, 25A by the second such mode of execution form from two pressing chamber P1, P2 connection area to the hole 16 that spues, shown in the single-point line b of Figure 10, compare with the situation of first mode of execution shown in the solid line a and to diminish, become big but compare than the situation of the technology of the patent documentation shown in the dotted line d 1.
Fig. 8, to this second mode of execution, expression is provided with the main pseudosection that wearing and tearing prevent the variation of plate 18A (omit the diagram wearing and tearing and prevent plate 28A).In this variation, also identical with first mode of execution, produce the suitable gap e of thickness of slab that prevents plate 18 with wearing and tearing between the end face of the movable side helical coil 23 of the inner face of the fixed side end plate 11 of fixed scroll 10 and movable scroll 20, the second pressing chamber P2 and the P3 of central compartment are communicated with by this gap e.It is narrow that yet the 15A of spot-facing portion of second mode of execution and the spot-facing portion 15 of first mode of execution compare width, thereby wearing and tearing prevent that the front end 18Aa of plate 18A from comparing with the situation of first mode of execution, more near the beginning volume point C of the inner peripheral surface 13b of fixed side helical coil 13.Therefore arrive under the shown position of beginning volume point C of outer circumferential face 13a of fixed side helical coil 13 at the beginning volume point A of the outer circumferential face 23a of movable side helical coil 23, near the root of the circular-arc front end 18a that prevents plate 18 from wearing and tearing in scope shown near the symbol 2 the beginning volume point C, compare narrowly with the scope shown in the symbol 1 in first mode of execution, thereby the amount of the gas that leaks to the first and second pressing chamber P1, P2 from the P3 of central compartment is compared with the situation of first mode of execution and is tailed off.Thereby, just reduced owing to such gas leakage the problem that the efficient of scroll compressor reduces according to second mode of execution.
Then, as shown in Figure 9 the 3rd mode of execution is described.In this 3rd mode of execution, be arranged on the 15B of spot-facing portion on the inner face that the P3 of central compartment with fixed side end plate 11 joins, spin axis direction from movable scroll 20, for near fan-shaped as the hinge portion hole 16 of will spuing, form to the upright sealed-off locality that is located at the inner peripheral surface 13b of the fixed side helical coil 13 on the fixed side end plate 11 and extend.Be formed at the 25B of spot-facing portion on the movable side end panel 21, except hole 16 this point that do not spue, identical with the 15B of spot-facing portion with the position relation of movable side helical coil 23.Except the structure of the 3rd mode of execution of the 15B of spot-facing portion, 25B, identical with first and second mode of execution.The 15B of spot-facing portion, 25B, as shown in Figure 9, be positioned at the beginning of each outer circumferential face 13a, 23a of helical coil 13,23 volume point A under near the state the beginning volume point C of each inner peripheral surface 23b, 13b of helical coil 23,13, though be not communicated with each pressing chamber P1, P2, but as the peripheral part of the great circle arcuation of the sealed-off side of the fan-shaped 15B of spot-facing portion (25B) on the scroll 10 (20) that is formed at a side, roughly along the outer circumferential face 23a (13a) of the front end of the helical coil 23 (13) of the opposing party's scroll 20 (10).If thereby movably scroll 20 is crossed this position and is rotated, because the length of the opening between two pressing chamber P1, P2 and the P3 of central compartment increases rapidly, thereby by two pressing chamber P1, the P2 of the 15B of spot-facing portion, 25B and the connection area between the P3 of central compartment, shown in the double dot dash line c of Figure 10, increase hastily.
As mentioned above, from the first and second pressing chamber P1, P2 is to the connection in the hole 16 that spues, have through helical coil 13,23 outer circumferential face 13a, beginning volume point A and the inner peripheral surface 23b of 23a, the 23d of inner arc portion of 13b, gap d between the 13d is finished, with by the above-mentioned 15B of spot-facing portion, 25B finishes, in the respective embodiments described above, helical coil 13,23 inner peripheral surface 13b, the concaved circular cambered surface 13d of 23b, 23d, one-tenth is from the outside of beginning volume point C for the extending portion H2 of the involute curve of inner peripheral surface 13b, a D therewith extending portion H2 intersect and enter its inboard shape, for two pressing chamber P1 behind the process sealed-off position, the increase of the connection area between P2 and the P3 of central compartment, follow this concaved circular cambered surface 13d, 23d is from inner peripheral surface 13b, 23b is for the outside of the extending portion H2 of involute curve, outer circumferential face 13a, beginning volume point A and the inner peripheral surface 23b of 23a, the 23d of inner arc portion of 13b, certain contribution has been made in the increase of the gap d between the 13d.Yet according to this 3rd mode of execution, because by the 15B of spot-facing portion, the two pressing chamber P1 of 25B, connection area between P2 and the P3 of central compartment increases rapidly, even thereby make to liken to and be each helical coil 13, each inner peripheral surface 13b of 23, the beginning volume point C of the involute curve of 23b is near the front end of central side, with butt helical coil 13 thereon, 23 outer circumferential face 13a, in the scope that the beginning volume point A of 23a does not disturb, become the concave arc surface 13d of the inboard of the prolongation that enters involute curve, 23d, also can fully guarantee two pressing chamber P1, connection area between P2 and the P3 of central compartment fully reduces the power loss that overcompression causes.Guarantee intensity fully greatly if like this, then can also make the front end of each helical coil 13,23.
In each above-mentioned mode of execution, make a pair of helical coil 13,23 and a pair of 15,25 (15A, the 25A of spot-facing portion; 15B, 25B) be same shape, be configured to point symmetry.Yet the present invention necessarily need do like this, and the position of the beginning volume point A of outer circumferential face 13a, the 23a of a pair of helical coil that can stagger 13,23 or the beginning volume point C of inner peripheral surface 13b, 23b are a little to a pair of spot-facing portion 15,25 (15A, 25A; 15B, 25B) shape do with change, and the configuration of cheek is departed from a little from point-symmetric position.If the suction like this, by stagger each pressing chamber P1, P2, by gap d or each spot-facing portion 15,25 (15A, 25A between the 23d of inner arc portion, the 13d of the beginning volume point A of outer circumferential face 13a, the 23a of helical coil 13,23 and inner peripheral surface 23b, 13b; 15B, 25B) each pressing chamber P1, P2 of constituting and the connection opportunity between the hole 16 of spuing, the pressure spike portion position of can stagger each pressing chamber P1, P2 can and then be improved overcompression and is reduced effect.
In each above-mentioned mode of execution, illustration with each 15,25 (15A, 25A of spot-facing portion; 15B, 25B) be arranged at the embodiment on fixed side end plate 11 and the movable side end panel 21 respectively, however under the few situation of the power loss that becomes problem, also spot-facing portion can be arranged in the two end plates 11,21 either party and implement.
Claims (4)
1. scroll compressor, make at the upright fixed scroll of Vorticose fixed side helical coil of establishing of the inner face of fixed side end plate, found the movable scroll joint of establishing Vorticose movable side helical coil with inner face in movable side end panel, so that a side's of described two helical coil outer circumferential face and the opposing party's inner peripheral surface join, between this two helical coil, form the rotation of following the described relatively fixed scroll of described movable scroll, volume is less gradually, and at least one pair of the pressing chamber that moves to central side simultaneously, described rotation continues, when beginning of the vortex of described each outer circumferential face volume point is crossed near the sealed-off position of described each inner peripheral surface, this beginning volume point leaves described inner peripheral surface, described two pressing chambers are communicated with the central compartment of the central part that is formed at described two helical coil, the hole that spues is communicated with the central compartment therewith, it is characterized in that, each inner peripheral surface of described each helical coil, make the beginning volume at least a portion of going back the front end of close central side that likens to the described inner peripheral surface of described sealed-off position, in the scope that the described beginning volume point with the outer circumferential face of butt described helical coil does not thereon disturb, become the concave arc surface of the inboard that enters the original vortex filament of described inner peripheral surface, make as the thickness of at least a portion of the front end of the central side of described each helical coil and become big as near the thickness of this helical coil of the front face side the described sealed-off position relatively, on the inner face that joins with described central compartment of at least one side's of these external described two helical coil described end plate, spot-facing portion is set, described spot-facing portion continues in rotation, when described beginning volume point of described each outer circumferential face is crossed near the beginning volume point of described each inner peripheral surface, described central compartment is communicated with at least one side in described two pressing chambers.
2. scroll compressor as claimed in claim 1, it is characterized in that, at least the described spot-facing portion that on described end plate of the side, forms, for the spin axis direction from described movable scroll is seen as circle, from forming to the sealed-off locality off-centre of founding the inner peripheral surface of being located at the helical coil on this end plate near the described hole that spues.
3. scroll compressor as claimed in claim 1, at least the described spot-facing portion that on described end plate of the side, forms, for the spin axis direction from described movable scroll is seen as ellipse, from extending and form to the upright sealed-off locality of being located at the inner peripheral surface of the helical coil on this end plate near the described hole that spues.
4. scroll compressor as claimed in claim 1, at least the described spot-facing portion that on described end plate of the side, forms, for the spin axis direction from described movable scroll is seen as to be the fan-shaped of hinge portion near the described discharge opening, from extending and form to the upright sealed-off locality of being located at the inner peripheral surface of the helical coil on this end plate near the described hole that spues.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004083311 | 2004-03-22 | ||
| JP2004083311A JP2005273453A (en) | 2004-03-22 | 2004-03-22 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1673542A true CN1673542A (en) | 2005-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100559670A Pending CN1673542A (en) | 2004-03-22 | 2005-03-22 | Scroll compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2005273453A (en) |
| KR (1) | KR100589554B1 (en) |
| CN (1) | CN1673542A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886628A (en) * | 2009-05-12 | 2010-11-17 | 松下电器产业株式会社 | Scroll compressor |
| CN103502646A (en) * | 2011-04-28 | 2014-01-08 | 三洋电机株式会社 | Scroll compressor |
| WO2014198215A1 (en) * | 2013-06-14 | 2014-12-18 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor, fixed scroll member and orbiting scroll member |
| CN105473863A (en) * | 2013-08-19 | 2016-04-06 | 大金工业株式会社 | Scroll compressor |
| CN109563831A (en) * | 2016-07-29 | 2019-04-02 | 大金工业株式会社 | Scroll compressor |
| CN113153738A (en) * | 2016-07-21 | 2021-07-23 | 特灵国际有限公司 | Sector step for scroll compressor |
| CN113396284A (en) * | 2019-05-29 | 2021-09-14 | 翰昂汽车零部件有限公司 | Scroll compressor and method for compressing gaseous fluid using scroll compressor |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011038480A (en) * | 2009-08-12 | 2011-02-24 | Sanden Corp | Scroll fluid machine |
| JP2014196692A (en) * | 2013-03-29 | 2014-10-16 | アネスト岩田株式会社 | Fixed scroll body and scroll fluid machine using the same |
| US11480178B2 (en) | 2016-04-27 | 2022-10-25 | Mark W. Wood | Multistage compressor system with intercooler |
| US10030658B2 (en) | 2016-04-27 | 2018-07-24 | Mark W. Wood | Concentric vane compressor |
| US11686309B2 (en) | 2016-11-07 | 2023-06-27 | Mark W. Wood | Scroll compressor with circular surface terminations |
| US11339786B2 (en) | 2016-11-07 | 2022-05-24 | Mark W. Wood | Scroll compressor with circular surface terminations |
| KR102385789B1 (en) * | 2017-09-01 | 2022-04-13 | 삼성전자주식회사 | Scroll compressor |
| CN107559191B (en) * | 2017-09-12 | 2023-11-24 | 上海光裕汽车空调压缩机有限公司 | Scroll compressor and modification method of scroll wrap profile thereof |
-
2004
- 2004-03-22 JP JP2004083311A patent/JP2005273453A/en active Pending
-
2005
- 2005-03-21 KR KR1020050022993A patent/KR100589554B1/en active IP Right Grant
- 2005-03-22 CN CNA2005100559670A patent/CN1673542A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886628A (en) * | 2009-05-12 | 2010-11-17 | 松下电器产业株式会社 | Scroll compressor |
| CN101886628B (en) * | 2009-05-12 | 2013-12-18 | 松下电器产业株式会社 | Scroll compressor |
| CN103502646A (en) * | 2011-04-28 | 2014-01-08 | 三洋电机株式会社 | Scroll compressor |
| WO2014198215A1 (en) * | 2013-06-14 | 2014-12-18 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor, fixed scroll member and orbiting scroll member |
| CN105473863A (en) * | 2013-08-19 | 2016-04-06 | 大金工业株式会社 | Scroll compressor |
| CN113153738A (en) * | 2016-07-21 | 2021-07-23 | 特灵国际有限公司 | Sector step for scroll compressor |
| CN109563831A (en) * | 2016-07-29 | 2019-04-02 | 大金工业株式会社 | Scroll compressor |
| CN113396284A (en) * | 2019-05-29 | 2021-09-14 | 翰昂汽车零部件有限公司 | Scroll compressor and method for compressing gaseous fluid using scroll compressor |
| US11905951B2 (en) | 2019-05-29 | 2024-02-20 | Hanon Systems | Scroll compressor and process for compressing a gaseous fluid with the scroll compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005273453A (en) | 2005-10-06 |
| KR20060045341A (en) | 2006-05-17 |
| KR100589554B1 (en) | 2006-06-14 |
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