CN101324232A - Scroll fluid machine - Google Patents
Scroll fluid machine Download PDFInfo
- Publication number
- CN101324232A CN101324232A CNA2008100986890A CN200810098689A CN101324232A CN 101324232 A CN101324232 A CN 101324232A CN A2008100986890 A CNA2008100986890 A CN A2008100986890A CN 200810098689 A CN200810098689 A CN 200810098689A CN 101324232 A CN101324232 A CN 101324232A
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- scroll
- mentioned
- pressure
- sealed member
- cycle
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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
- 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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- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
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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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/007—Sealings for working fluid between radially and axially moving parts
Abstract
A scroll fluid machine is configured by engaging a fixed scroll and an orbiting scroll having spiral bodies formed on base plates. A seal member is provided between a rear surface of the orbiting scroll and a frame member arranged opposite thereto to divide a rear side chamber into an inner space and an outer space. The inner space inside the seal member is subjected to a pressure substantially corresponding to a discharge pressure, and the outer space is subjected to a pressure lower than that of an inner back pressure chamber to press the orbiting scroll against the fixed scroll. The scroll members are formed such that the width of a groove and the thickness of a tooth of the spiral body formed inside the seal member are larger than those of the spiral body formed outside the seal member.
Description
Technical field
The present invention relates to be used for compressor, vacuum pump, decompressor etc. displacement fluid mechanism a kind of, be scroll fluid machine, particularly scroll compressor.
Background technique
Scroll fluid machine before, the type that has Japanese kokai publication hei 08-121366 communique, TOHKEMY 2004-293531 communique to put down in writing.
The scroll fluid machine of Japanese kokai publication hei 08-121366 communique record, between scrollwork opposition side (chamber, the back side side) sealing surface of cycle scroll element and the frame relative with above-mentioned sealing surface, be provided with the seal ring in the annular slot that remains on above-mentioned, be divided into inner space and outer space by the sealing ring.Inner space is in central part, has and head pressure pressure about equally, and, offering the fuel feeding road on the lubricant oil guiding top that will remain in the seal container inner bottom part.Outer space is in peripheral part, maintains the intermediate pressure of suction pressure and head pressure.
Divide by this, the pressure corresponding with the two pressure of inner space and outer space is acted on the cycle scroll element, the cycle scroll element is pressed on the fixed scroll member, the two sealing.
And, upper-end surface at seal ring, by pressure reduction, make required minimal lubricant oil leak into outer space from inner space, simultaneously, make remaining most of lubricant oil in the inner space not return the seal container inner bottom part with mixing,, can obtain high bearing reliability, good compression efficient, low last oil mass according to this formation with pressurized gas in the seal container.
Patent documentation 1: Japanese kokai publication hei 08-121366 communique
Patent documentation 2: TOHKEMY 2004-293531 communique
The problem that invention will solve
The scroll fluid machine of the prior art of above-mentioned Japanese kokai publication hei 08-121366 communique, the record of TOHKEMY 2004-293531 communique, owing to make head pressure affact the inner space of chamber, the back side side of cycle scroll element, make the intermediate pressure of suction pressure and head pressure affact outer space, so, cycle scroll element central part side is excessive to the pushing force of fixed scroll member, and the slip surface of two scroll may produce burn-back or block.
Summary of the invention
The scroll fluid machine of the generation of the purpose of this invention is to provide burn-back on the slip surface that can appropriately prevent two scroll, blocking by the pushing force that makes a scroll element push another scroll element.
Solve the technological scheme of problem
To achieve these goals, scroll fluid machine of the present invention, make 2 scroll element engagements with the scroll body that is formed on the platen, by its relative turning motion, the formed confined space of two scroll elements is enlarged or dwindle, carry out the expansion or the compression of fluid, it is characterized in that, between the back side of an above-mentioned scroll element and static part, sealed member is set, the back side of an above-mentioned scroll element is divided into inner space and outer space, make the pressure that roughly is equivalent to head pressure affact the inner space of above-mentioned sealed member, make the pressure lower affact the outer space of above-mentioned sealed member than inboard back pressure chamber, be urged to another scroll element, and the shape of the scroll body of above-mentioned scroll element is, the part of scroll body or integral body, towards the outside, the groove width of the scroll body of scroll element diminishes, and the transverse tooth thickness of scroll body also diminishes from the central part of scroll body.
Here, the part of the scroll body of above-mentioned scroll element or integral body, preferably the involute of the circle (basic circle) that is changed with involuted angle by radius forms.
In addition, above-mentioned scroll element, the groove width of scroll body and the transverse tooth thickness that preferably are formed on above-mentioned sealed member inboard are bigger than the groove width and the transverse tooth thickness of the scroll body that is formed on the above-mentioned sealed member outside.
In addition, above-mentioned scroll element preferably has such radius,, forms the Base radius of the scroll body be positioned at above-mentioned sealed member inboard that is, and the Base radius of scroll body that is positioned at the above-mentioned sealed member outside than formation is big.Here, the radius of establishing basic circle is that a, involuted angle are the Base radius of the coiling initial part of λ, scroll body when being as, the scroll body of above-mentioned scroll element, the most handy by
a＝as+f(λ) (f′(λ)＜0)
The involute of the circle of expression forms.
In addition, as other features of the present invention, scroll fluid machine has the fixed scroll that is formed on the scroll body on the platen and the engagement of cycle scroll constitutes by making, it is characterized in that, the back side of above-mentioned cycle scroll and and its frame parts that disposing in opposite directions between, sealed member is set, be divided into inner space and outer space, make the pressure that roughly is equivalent to head pressure affact the inner space of above-mentioned sealed member, make the pressure lower affact the outer space of above-mentioned sealed member than inboard back pressure chamber, above-mentioned cycle scroll is pressed against on the fixed scroll, and above-mentioned cycle and fixed scroll form like this: the groove width of scroll body and the transverse tooth thickness that are formed on above-mentioned sealed member inboard are bigger than the groove width and the transverse tooth thickness of the scroll body that is formed on the above-mentioned sealed member outside.
The invention effect
According to the present invention, because the scroll body shape of scroll element is, in the part of scroll body or on the whole, towards the outside, the groove width of the scroll body of scroll element diminishes, and the transverse tooth thickness of scroll body also diminishes from the central part of scroll body.So, can obtain making with a scroll element be pressed on another scroll element pushing force suitably, can prevent the scroll fluid machine that produces burn-back, block on the slip surface of scroll element.
Description of drawings
Fig. 1 is the embodiment's of an expression scroll fluid machine of the present invention profile diagram.
Fig. 2 is the explanatory drawing of the pressure of illustration on the cycle scroll.
Fig. 3 (a) and (b) are planimetric map and profile diagrams of cycle scroll shown in Figure 1.
Embodiment
Below, with reference to the description of drawings embodiments of the invention.Among each figure, annotate and represent identical or suitable part with the part of same reference numerals.
[embodiment 1]
With reference to Fig. 1, Fig. 2 and Fig. 3 embodiments of the invention are described.Fig. 1 is the profile diagram of scroll compressor.Fig. 2 is the figure of the pressure of illustration on the cycle scroll.Fig. 3 is the planimetric map (a) and the profile diagram (b) of cycle scroll shown in Figure 1.
Scroll compressor 1 is being taken in compression mechanical part 2, is being driven the drive portion 3 and the running shaft 300 of this compression mechanical part in seal container 700.Fig. 1 is the longitudinal type scroll compressor, is setting drive portion 3 by running shaft 300 below compression mechanical part 2, is setting oil sump 730 below this drive portion 3, and compression mechanical part 2 is being connected by running shaft 300 with drive portion 3.
Compression mechanical part 2 is made of as fundamental fixed scroll 100, cycle scroll 200 and frame 400.Frame 400 is fixed on the seal container 700, and is setting the rolling bearing 401 of supporting rotating shaft.Fixed scroll 100 is made of platen 101, vortex scroll substance 102, suction port 103 and the exhaust port 104 as the basic comprising part, is fixed on the frame 400 with bolt 405.Vortex scroll substance 102 is vertically upright to be located on the face of platen 101.Cycle scroll 200 by as platen 201, vortex scroll substance 202, the cycle vortex bearing portion 203 of basic comprising part, be formed on the cycle vortex bearing portion 203 that setting sliding bearing 210 and the platen 201 and pressing chamber constituted with the back pressure hole that the back pressure chamber at the platen back side is communicated with.The vertically upright fixed scroll side that is located at platen 201 of vortex scroll substance 202.Cycle vortex bearing portion 203 vertically is formed on the scroll body opposition side central part of platen 201 highlightedly.Cycle scroll 200 is to being that the mo(u)lding processing of material is made with cast iron, aluminium etc.
Fixed scroll 100 and 200 engagements of cycle scroll have formed pressing chamber 130.This pressing chamber 130, by the turning motion of cycle scroll 200, its volume reduces, and carries out compressed action.This compressed action is such: along with the turning motion of cycle scroll 200, working fluid is inhaled into pressing chamber 130 from suction pipe 711 and suction port 103, the working fluid that is inhaled into is through after the compression stroke, be discharged in the seal container 700 from the exhaust port 104 of fixed scroll 100, be discharged to outside the seal container 700 through discharge tube 701 again.Like this, the space in the seal container 700 remains head pressure.As working fluid, use the high-pressure refrigerant of the R410A that is beneficial to earth environmental protection etc. usually by compression mechanical part compression.
The drive portion 3 that 200 cycles of cycle scroll are driven, by as the motor 600 with stator 601 and rotor 602, running shaft 300, the oil feed pump 900 of fundamental, constitute the anti-locking mechanism of cycle scroll rotation Oldham coupling 500, frame 400, rolling bearing 401,803, cycle vortex bearing portion 203, be provided in sliding bearing 210 in this cycle vortex bearing portion etc. and constitute.
Running shaft 300 is made of main shaft part 302, crank pin 301 and supplementary bearing support 303.Main shaft part 302 and supplementary bearing support 303 are formed on the same axle center, constitute main shaft portion.And then oil feed pump 900 is pressed into the underpart of running shaft 300.Rolling bearing 401,803 is rotatably mounted with the main shaft part 302 of running shaft or supplementary bearing support 303 respectively.Cycle vortex bearing portion 203, sliding bearing 210 is being gone in side pressure within it, can move and is rotatably engaging with the crank pin 301 of running shaft at axle direction.
Rolling bearing 401 (main bearing) is configured in the upside of motor 600, and rolling bearing 803 (supplementary bearing) is configured in the downside of motor 600.In the present embodiment, owing to supporting running shaft 300 with rolling bearing 401,803 in the both sides of motor 600, so, can suppress power loss, and can prevent that running shaft from tilting.
On the undercarriage 801 that is fixed on the seal container 700, fixing housing 802 by bolt 805, rolling bearing 803 inserts this housing 802 from the top, and the side is installed with case cover 804 from it again.
Oldham coupling 500 is provided in the back side of the platen 201 of cycle scroll 200.Be formed on 1 group in 2 groups the key part of orthogonal on the Oldham coupling, slide in the keyway on being formed on frame 400, remaining 1 group, in the keyway that is formed on cycle vortex scroll substance 202 back side, slide.Like this, the cycle scroll, in the face vertical with the axial direction of upright set direction as vortex scroll substance, with respect to fixed scroll 100 not rotations make turning motion.
Compression mechanical part 2 moves in this wise: by the rotation of the running shaft 300 that is being connected with motor 600, during crank pin 301 eccentric rotations, the cycle scroll is carried out turning motion by Oldham coupling (locking mechanism is prevented in rotation) with respect to fixed scroll, by suction pipe 711 and suction port 103, gas is drawn in the pressing chamber 130 that is formed by vortex scroll substance 102 and 202.By the turning motion of cycle scroll, Yi Bian moving towards central part, pressing chamber reduces volume on one side, with gas compression, pressurized gas is discharged to the discharge chamber from exhaust port 104.Be discharged to the gas of discharging the chamber, around compression mechanical part 2, the inflow motor chamber is discharged into outside the compressor from discharge tube 701 then.
On the platen 201 of cycle scroll 200, be provided with the back pressure hole (figure does not show) that pressing chamber 130 is communicated with the back pressure chamber 411 at the cycle scroll back side, the pressure of the seal ring outer space of back pressure chamber 411, remain the pressure (intermediate pressure) of the centre of suction pressure and head pressure.Being formed on the above-mentioned back pressure chamber 411 of cycle scroll back side, is the space that is formed by cycle scroll 200, frame 400 and fixed scroll 100.Frame 400 double as form the parts of back pressure chamber 411, with the seal ring 410 in the groove that is located at frame 400, back pressure chamber 411 roughly are divided into the inner space and the middle outer space of pressing of discharging pressure.
As shown in Figure 2, cycle scroll 200 by seal ring 410, under the force action of the pressure of the outer space (outside back pressure chamber) 413 of inner space (inboard back pressure chamber) 412 of roughly discharge pressing and intermediate pressure, is urged on fixed scroll 100.Another face, above-mentioned cycle scroll 200, the pressure by the pressing chamber 130 that forms with fixed scroll 100 is subjected to the power of being stripped from from fixed scroll 100.Therefore, for the cycle scroll being pressed against the fixed scroll side with suitable power, according to
Pushing force 〉=peeling force
Mode, set the pressure (intermediate pressure) of the outer space 413 of above-mentioned seal ring.
As mentioned above, in the present embodiment, make the pressure that roughly is equivalent to head pressure, affact the inner space of dividing by seal ring 410, make the pressure lower (intermediate pressure) affact the outer space of above-mentioned sealed member than inboard back pressure chamber, the cycle scroll is pressed against on the fixed scroll, but, owing to make head pressure affact above-mentioned inner space 412, so, the power of the central part of pushing cycle scroll, more much bigger than the power of the peripheral part side that pushes the cycle scroll.Therefore, the face of scroll body 102 ends and slip surface cycle scroll 200 of scroll body 202 ends and slip surface fixed scroll 100 and the fixed scroll of cycle scroll is pressed excessive, the problem that exists this slip surface to be easy to generate burn-back, to block.
For this reason, in the present embodiment in order to address this problem, as shown in Figure 3, the shape of the scroll body 202 of cycle scroll 200 is become, part or all of scroll body makes the groove width of scroll body diminish from the scroll body central part towards the outside, the transverse tooth thickness of scroll body is also diminished.About the scroll body 102 of fixed scroll 100, also the scroll body 202 with the cycle scroll similarly forms.
More preferably, feasible groove width and the transverse tooth thickness that is formed on the scroll body of seal ring 410 inboards is bigger than the groove width and the transverse tooth thickness of the scroll body that is formed on the above-mentioned seal ring outside.This scroll body shape can be made like this: with the involute of radius with the circle (basic circle) of involuted angle variation, form part or all of scroll body.Specifically, constitute by following radius: make the Base radius that forms the scroll body that is positioned at above-mentioned seal ring 410 inboards, the Base radius of scroll body that is positioned at seal ring 410 outsides than formation is big.
Here, the radius of establishing basic circle is that a, involuted angle are Base radius in the coiling initial part of λ, scroll body when being as, the scroll body of above-mentioned scroll element, can use by
a＝as+f(λ) (f′(λ)＜0)
The involute of the circle of expression forms.
According to present embodiment,, can strengthen the area ratio of the relative seal ring of the compression volume of the more high pressure outside compression volume of seal ring inboard by adopting above-mentioned structure, so, the power of depressing that can more add the macrocycle scroll element, the result can prevent that the pushing force of cycle scroll element is excessive.Especially, because the back pressure chamber (inner space) in the seal ring inboard acts on roughly head pressure, so, though the pushing force of cycle vortex center portion strengthens, but in the present embodiment, because in the pressing chamber that forms with two scroll elements, the pressing chamber area of the high pressure of central part side increases more, so, the peeling force of central part side also increases, the slip surface face of the scroll body end of two scroll elements can be pressed suitably to be kept, have the burn-back that can prevent slip surface conscientiously, the effect of blocking generation.
In addition, the scroll body shape of scroll element before, on whole scroll body, towards the outside, groove width and transverse tooth thickness are uniformly from the scroll body central part, and at this moment the external diameter of scroll body increases, thereby, platen 201 also increases, and the area of intermediate pressure effect increases, and the power that whole cycle scroll is pressed against on the fixed scroll also increases.When whole pushing force increased, the slip resistance of cycle scroll platen and fixed scroll end plate face also increased, and generation is blocked, the danger of burn-back also more increases.In order to establish low intermediate pressure, though considered to make above-mentioned back pressure hole to be communicated with the side than low pressure of pressing chamber, but, when back pressure hole is communicated with the low voltage side of pressing chamber, because the pressure oscillation of this pressing chamber is little, so even the peeling force that produces because of the pressure of pressing chamber integral body has big change, the back pressure chamber pressure of intermediate pressure is also still very little.Therefore, can not make the change of the size adaptation peeling force of pushing force fully, the result can not enlarge operating range.
In the present embodiment, in part or all scope of scroll body, from the center of scroll body towards the outside, the groove width of the scroll body of two scroll elements changes, and the transverse tooth thickness of scroll body forms with diminishing, so, also can reduce the external diameter of scroll body, can realize the miniaturization of scroll element.In addition, owing to also can reduce the area at the cycle scroll back side that intermediate pressure acts on, so, can also set the pressure of the back pressure chamber that intermediate pressure acted on greatlyyer.Therefore, according to present embodiment, back pressure hole is communicated with a side of the higher pressure of pressing chamber, can make the change of the size adaptation peeling force of pushing force fully, so, can easily enlarge operating range, the slip resistance of cycle vortex platen and fixed scroll end plate face also reduces, can obtain more to reduce block, the effect of the danger of burn-back.Like this, according to present embodiment, the high zone of the pressure of back pressure chamber also increases than before vortex scroll substance, so, in bigger operating range, can keep the axle direction equilibrium of forces of cycle scroll.
Like this, according to present embodiment, can obtain having high reliability, high efficiency and can realize the scroll fluid machine of scroll element pathization.
In addition, in the present embodiment, the internal diameter of seal ring 410 is littler than the external diameter of rolling bearing 401.Therefore, rolling bearing 401 is inserted into frame 400 from motor side, this rolling bearing 401 is fixed with frame cover 403.On frame cover 403, thrust-bearing is set, is fixed on the frame 400, like this,, can effectively the clearance seal between frame cover and the frame be lived, can suppress oil leakage from fuel supply path by bolt with bolt 406.
Below, fuel supply path is described.During running shaft 300 rotation, the oil that will be in the oil sump 730 under the head pressure by oil feed pump 900 boosts and supplies to oily path 311 in the running shaft.Be sent to the part of the oil of oily path 311, flow to supplementary bearing 803 by cross-drilled hole 312 after, turn back to oil sump 730.Arrived the oil on crank pin 301 tops by oily path 311, sliding bearing (cycle bearing) 210 is lubricated, flow to rolling bearing 401 again.Oil with rolling bearing 401 after lubricated almost all returns oil sump 730 by oil exit pipe 408.Because the inner space at seal ring 410 is supplied with the oil that is in the oil sump 730 under the head pressure, so this inner space quilt roughly oil of head pressure is full of.
End face in cycle vortex bearing portion 203 has formed fuel feeding pocket (groove) 205.By the turning motion of cycle scroll 200, above-mentioned fuel feeding pocket 205 strides across seal ring 410 in its outside and back and forth inboard, the part of the oil between sliding bearing 210 and the rolling bearing 401, is transported to the back pressure chamber 411 of seal ring outer space.The oil that is transported is lubricated with Oldham coupling 500, and, the end plate face 105 of fixed scroll is lubricated with the slip surface of the platen 201 of cycle scroll 200.Then, oil flows into pressing chamber 130 by the micro-gap of back pressure hole or end plate slip surface.Flowed into the oil of pressing chamber 130, the refrigerant gas after being compressed is discharged from exhaust port 104, returns oil sump 730 in seal container 700 with after refrigerant gas separates.The above-mentioned back pressure chamber 411 of seal ring outer space by back pressure hole, becomes the roughly the same pressure of the pressing chamber that is communicated with back pressure hole, is the pressure of the centre of head pressure and suction pressure.
As mentioned above, the back pressure chamber of cycle scroll, the outer space that is under the intermediate pressure that is in the inner space under the head pressure and the seal ring outside by the seal ring inboard constitutes, the pushing force that the total of the head pressure of inner space and the intermediate pressure of outer space obtains acts on the cycle scroll.The peeling force that pressure produced of the pressing chamber that is formed by two scroll elements also acts on the cycle scroll, so, as its result, under the effect of the power of cycle scroll after deducting above-mentioned peeling force, be pushed to the fixed scroll side from above-mentioned pushing force.Owing to be that roughly head pressure acts on inner space, so the pushing force of the central part of cycle scroll increases, but in the present embodiment because in the formed pressing chamber of two scroll elements, the pressing chamber area of the high pressure of central part side is bigger, so the peeling force of central part side also increases.Its result can press the face of the slip surface of the scroll body end of two scroll elements to remain suitably.
Below, illustrate from the oil of exhaust port 104 discharges and flowing of refrigerant gas.Oil and refrigerant gas from exhaust port is discharged by the path (figure does not show) that is located at fixed scroll 100 and frame 400 peripheries, flow into the D font compartment 423 of foot 422 belows that are located at frame.D font compartment 423 has window portion that is located at Zhou Fangxiang in the seal container and micro-gap portion 424 such two streams that are located at D font compartment lower end, the oil and the refrigerant gas of D font compartment 423 have been flowed into, almost all flow out from the window portion that is located at Zhou Fangxiang in the seal container, along the interior week of seal container, flow in the space between frame 400 and stator 601.Flow out to a part of oil and the refrigerant gas of the clearance portion 424 that is located at D font compartment 423 lower ends, the stator periphery path (figure does not show) by being located at stator 601 peripheral parts is used for cooling off stator 601.
Along oil and the refrigerant gas of seal container 700 interior Zhou Liudong, under centrifugal action, heavy oil forms attached to flowing on week in the seal container, separates with refrigerant gas.Oil after the separation returns oil sump 730 by stator periphery path.Refrigerant gas is discharged into the seal container outside by discharge tube 701.
Claims (6)
1. scroll fluid machine, the turning motion relatively by making two scroll elements engagements with scroll body of being formed on the platen makes the confined space expansion that is formed by two scroll elements or dwindles expansion or the compression of carrying out fluid; It is characterized in that,
Between the back side of an above-mentioned scroll element and static part, sealed member is set and the back side of an above-mentioned scroll element is divided into inner space and outer space, make the pressure that roughly is equivalent to head pressure affact the inner space of above-mentioned sealed member, make the pressure lower affact the outer space of above-mentioned sealed member, push to above-mentioned another scroll element than inboard back pressure chamber; And,
The scroll body shape of above-mentioned scroll element so forms, that is, in the part of scroll body or on the whole, from the central part of scroll body toward the outer side, the groove width of the scroll body of scroll element diminishes, and the transverse tooth thickness of scroll body also diminishes.
2. scroll fluid machine as claimed in claim 1 is characterized in that, the part of the scroll body of above-mentioned scroll element or integral body are the circles that changed according to involuted angle by radius, be that the involute of basic circle forms.
3. scroll fluid machine as claimed in claim 1 is characterized in that above-mentioned scroll element so forms, and, is formed on the groove width and the transverse tooth thickness of the scroll body of above-mentioned sealed member inboard that is, and is bigger than the groove width and the transverse tooth thickness of the scroll body that is formed on the above-mentioned sealed member outside.
4. scroll fluid machine as claimed in claim 2, it is characterized in that, above-mentioned scroll element has such radius, that is, the Base radius that forms the scroll body that is positioned at above-mentioned sealed member inboard is bigger than the Base radius that forms the scroll body that is positioned at the above-mentioned sealed member outside.
5. scroll fluid machine as claimed in claim 4 is characterized in that, when the radius of establishing basic circle is that a, involuted angle are Base radius in the coiling initial part of λ, scroll body when being as, the scroll body of above-mentioned scroll element be with by
a＝as+f(λ) (f′(λ)＜0)
The involute of the circle of expression forms.
6. scroll fluid machine has the fixed scroll and the engagement of cycle scroll that are formed on the scroll body on the platen and constitutes by making; It is characterized in that,
The back side of above-mentioned cycle scroll and and its frame parts that disposing in opposite directions between sealed member is set, be divided into inner space and outer space, make the pressure that roughly is equivalent to head pressure affact the inner space of above-mentioned sealed member, make the pressure lower affact the outer space of above-mentioned sealed member, above-mentioned cycle scroll is pushed towards fixed scroll than inboard back pressure chamber; And,
Above-mentioned cycle and fixed scroll so form, that is, the groove width of scroll body and the transverse tooth thickness that are formed on above-mentioned sealed member inboard are bigger than the groove width and the transverse tooth thickness of the scroll body that is formed on the above-mentioned sealed member outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007153467A JP2008303844A (en) | 2007-06-11 | 2007-06-11 | Scroll fluid machine |
| JP2007153467 | 2007-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101324232A true CN101324232A (en) | 2008-12-17 |
Family
ID=40096058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100986890A Pending CN101324232A (en) | 2007-06-11 | 2008-06-06 | Scroll fluid machine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20080304994A1 (en) |
| JP (1) | JP2008303844A (en) |
| CN (1) | CN101324232A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104114864A (en) * | 2012-03-16 | 2014-10-22 | 松下电器产业株式会社 | Hermetically sealed compressor, and freezing device provided therewith |
| CN111379704A (en) * | 2018-12-26 | 2020-07-07 | 株式会社丰田自动织机 | Electric compressor |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4696153B2 (en) * | 2008-12-15 | 2011-06-08 | 日立アプライアンス株式会社 | Rotary compressor |
| CN102305208A (en) * | 2011-08-30 | 2012-01-04 | 刘明辉 | Oil pump for reciprocating variable speed sealing compressor |
| US20130251551A1 (en) * | 2012-03-23 | 2013-09-26 | Bitzer Kuehlmaschinenbau Gmbh | Compressor shell with multiple diameters |
| JP6692195B2 (en) * | 2016-03-24 | 2020-05-13 | サンデン・オートモーティブコンポーネント株式会社 | Scroll compressor |
| JP1574166S (en) | 2016-08-31 | 2020-04-06 | ||
| JP1574165S (en) * | 2016-08-31 | 2020-04-06 | ||
| JP6812174B2 (en) * | 2016-09-05 | 2021-01-13 | 日立ジョンソンコントロールズ空調株式会社 | Refrigerant compressor |
| JP7226193B2 (en) * | 2019-08-30 | 2023-02-21 | 株式会社豊田自動織機 | electric compressor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2910457B2 (en) * | 1992-09-11 | 1999-06-23 | 株式会社日立製作所 | Scroll fluid machine |
| JP3599005B2 (en) * | 2001-07-30 | 2004-12-08 | 株式会社日立製作所 | Scroll fluid machine |
| JP3909415B2 (en) * | 2003-03-28 | 2007-04-25 | 株式会社日立製作所 | Scroll compressor |
-
2007
- 2007-06-11 JP JP2007153467A patent/JP2008303844A/en active Pending
-
2008
- 2008-06-06 CN CNA2008100986890A patent/CN101324232A/en active Pending
- 2008-06-11 US US12/136,804 patent/US20080304994A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104114864A (en) * | 2012-03-16 | 2014-10-22 | 松下电器产业株式会社 | Hermetically sealed compressor, and freezing device provided therewith |
| CN111379704A (en) * | 2018-12-26 | 2020-07-07 | 株式会社丰田自动织机 | Electric compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008303844A (en) | 2008-12-18 |
| US20080304994A1 (en) | 2008-12-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20081217 |