CN102734156B - There is the scroll compressor that spring contacts with auxiliary maintenance scroll wrap - Google Patents

There is the scroll compressor that spring contacts with auxiliary maintenance scroll wrap Download PDF

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Publication number
CN102734156B
CN102734156B CN201210067228.3A CN201210067228A CN102734156B CN 102734156 B CN102734156 B CN 102734156B CN 201210067228 A CN201210067228 A CN 201210067228A CN 102734156 B CN102734156 B CN 102734156B
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CN
China
Prior art keywords
scroll
slide block
cam pin
counterweight
wrap
Prior art date
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Active
Application number
CN201210067228.3A
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Chinese (zh)
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CN102734156A (en
Inventor
G·W·哈恩
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Danfoss Scroll Technologies LLC
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Danfoss Scroll Technologies LLC
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Publication of CN102734156A publication Critical patent/CN102734156A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0057—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/807—Balance weight, counterweight
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

Electrical motor driven axle rotates relative to another scroll to make a scroll.This axle has the cam pin extended up in slide block.Cam pin is also provided with the drive surfaces of general planar, and is provided with gap between the hole and the periphery of cam pin of slide block, thus slide block can be moved relative to cam pin.Slide block extends up in axle sleeve, and described axle sleeve is extended from the pedestal of a scroll member wrap.Spring is positioned to a scroll wrap towards another scroll member wrap bias voltage.Spring is positioned between cam pin and the hole of slide block.

Description

There is the scroll compressor that spring contacts with auxiliary maintenance scroll wrap
Technical field
The application relates to a kind of scroll compressor, and wherein, spring is arranged on to be biased between cam pin and the slide block be associated and by scroll wrap and contacts.
Background technique
Scroll compressor is known, and is widely used in refrigerant compression application.In the scroll compressor of standard, the roughly spiral helicine scroll wrap that the first scroll has pedestal and extends from its pedestal.First scroll and the second scroll are worked in coordination, and described second scroll also has the spiral helicine scroll wrap extended from its pedestal.Second scroll is rotated relative to the first scroll, along with this motion that rotates occurs, the refrigeration agent of catching is compressed towards discharge port.
When scroll compressor is actuated to rotate, by rotating, motion provides centrifugal force.The known counterweight that provides is to offset this centrifugal force.Typically, counterweight has been arranged on the live axle for the vortex body rotated.But recently, counterweight has been incorporated in the driving attachment portion between live axle and the vortex body rotated.
In the driving attachment portion of a known type, cam pin is extended from the live axle driven by motor.This pin extends in the hole of slide block.Slide block is typically provided with the hole of circular and the face of general planar, the face of this general planar and cam pin, the face of general planar of matching contacts.But, by the periphery making the hole of slide block be greater than cam pin, between allowable offset pin and slide block, there is motion.When attempting compressed liquid, this motion makes two scroll wrap move into disengaging to contact with each other, and by control from fluid intake this movable machinery of maximum, force protect vortex body.
When the vortex body rotated is driven, centrifugal force has made the side that slide block is keeping the scroll wrap of scroll compressor to contact move upward usually.If the motion of these teeth disengages, then can there is leakage, compression efficiency will be compromised.
Use counterweight in driving joint office (especially around slide block), play a part to offset this centrifugal force.
Proposed to make the drive surfaces between cam pin and slide block be in not with the angle of the center parallel of counterweight.By this way, the driving force trending towards keeping scroll wrap contact is produced.When comparatively low speed, this driving force still can keep tooth contact, but along with speed increases, this driving force may be not enough.
Summary of the invention
Scroll compressor has the first scroll and the second scroll, the roughly spiral helicine scroll wrap that described first scroll has pedestal and extends from described pedestal, the roughly spiral helicine scroll wrap that described second scroll has pedestal and extends from its pedestal.Described scroll wrap cooperatively interacts to limit compression chamber.Electric motor drives described second scroll is rotated relative to described first scroll to axle.Described axle has the cam pin extended up in slide block, and described slide block is provided with hole, and the hole of described slide block has general planar drive surfaces and is positioned at the curved surface removing the position of (removedfrom) from described general planar drive surfaces.Described cam pin is also provided with the drive surfaces of general planar, and is provided with gap between the described hole and the periphery of described cam pin of described slide block, thus described slide block can move relative to described cam pin.Described slide block extends up in axle sleeve, and described axle sleeve is extended from the described pedestal of described second scroll, and described slide block causes described second scroll relative to the motion of described first scroll relative to the motion of described cam pin.Spring is positioned to the tooth bias voltage of described second scroll wrap towards described first scroll.Described spring is positioned between described cam pin and the described hole of described slide block.
Accompanying drawing explanation
Can understand these and other feature of the present invention best from following explanation and accompanying drawing, be below that it briefly describes.
Fig. 1 shows scroll compressor.
Fig. 2 shows in scroll compressor the details driving attachment portion.
Fig. 3 shows another embodiment.
Fig. 4 shows and another embodiment.
Fig. 5 shows the view of Fig. 4 embodiment.
Embodiment
The compressor 20 with drive motor 122 is shown, this drive motor axle 24 in Fig. 1.Axle 24 is provided with cam pin 26.Slide block 28 has the hole around cam pin 26.As is known, slide block and pin is each all has roughly circular cylinder shaped portion in both large circumference range.But, the limited circumference range on cam pin and slide block is formed the drive surface of relatively flat.The drive surfaces contact of these two relatively flats, to make to rotate, scroll 21 rotates relative to the non-scroll 22 that rotates.In addition, as is known, the non-coupling that rotates (such as Oldham coupling) can be positioned to cause the motion that rotates.Although used term " plat surface " to describe plane on cam pin and slide block, in fact, one in cam pin and slide block or both can be slight bending or tubular, term " smooth " should be interpreted as the above-mentioned this meaning.
Counterweight 30 is around slide block 28.As shown, the tubular ring 36 in counterweight 30 is around slide block 28, and extension part 34 upwards extends and makes it circumferentially around the axle sleeve 32 receiving slide block 28 and cam pin 26.As shown, hydraulic oil bearing 400 is positioned in the middle of the inner circumferential of axle sleeve 32 and the periphery of slide block 28.
As known in scroll compressor, make to treat that the refrigeration agent by compressing enters compressor 20 by pumping tube 160, and flow into the swabbing pressure chamber 101 around motor 122.Refrigeration agent upwards passes into the compression chamber 105 be formed between scroll, and is compressed and be transported in head pressure chamber 102.Refrigeration agent from head pressure chamber 102 by pipe 103 outwardly.
As shown in Figure 2, counterweight 30 is around slide block 28.The endoporus 60 of slide block 28 is provided with flat driving surfaces 62.The periphery of cam pin 26 is illustrated and in sightly can has the drive surface 99 of cooperation.As shown, the periphery of cam pin 26 also has cylindrical portion 98 with the smooth isolated position of drive surfaces 99.Similarly, the cylindrical portion 61 of the part in the hole 60 forming slide block 28 is provided with.
The inner circumferential in the hole of the tubular ring 36 of counterweight can be provided with par, as can be arranged in slide block periphery.This is by the guarantee suitable location of counterweight on slide block.
Seeing as known from Fig. 2, the hole in slide block is greater than the periphery of cam pin, thus allows certain to move.This motion allows these scroll wrap to move under certain conditions to disengage.
As shown, the center line of counterweight and centrifugal force rough alignment.Carry out the power at the driving angle that Free Surface 62 and 99 provides along line Fda.Power and the centrifugal force of counterweight C act on the contrary, and thus restriction keeps the power of scroll contact.Angle A increases confining force to help to keep scroll contact.In fact, this angle A is non-zero, and between 6 ° to 40 °, especially between 5 ° to 20 °, can be more in particular between 6 ° to 20 °.In one embodiment, this angle is between 7.5 ° to 17.5 °.
By this relation had between smooth drive surfaces 62 and counterweight central axis, achieve the better control of scroll compressor operation.This angle provides extra seal force and better controls to keep tooth contact between compression period.The centrifugal force produced by motor element has the part keeping tooth contact, and the use of counterweight will limit this centrifugal force to a certain extent.So, this angle provides additional power.On the one hand, if angle is too little, enough power may be there is no, but excessive power is also undesirable.So, the scope mentioned provides valuable benefit.
In this application, spring 208 has been added in the hole of slide block 28, and has the end of the recess of the end being arranged in plat surface 62 and be arranged in the relative end of recess 212.If expect, the end of spring by snap engagement in the breach in the hole 60 of slide block 28.These springs multiple can be provided with in the plane of this figure.As shown in Figure 2, leaf spring is used for approximately towards Shangdi bias voltage slide block 28 and counterweight 30.This will be further used for the tooth contact keeping compressor.
The use of spring provides the confining force that can stand even high speed operation, to keep scroll wrap reliably to contact, and keeps the valid function of scroll compressor.
In addition, as known illustratively, between the surface 221 of a part for spring 208 and formation slide block 28 mesopore, there is gap 220.This space being used for receiving spring is not the continuous part of cylindrical portion 61.
Fig. 3 shows another embodiment's slide block 300.As shown here, the angle that flat driving surfaces 302 will not be in as shown in Fig. 2 embodiment, but almost parallel with the center line of counterweight as shown in Figure 2.In embodiment 300, recess 304 and 306 receives a pair leaf spring 308 and 310.Although use counterweight in fig. 2, and can use counterweight in figure 3, it is also possible that counterweight is positioned at other position different from this embodiment.
Fig. 4 shows another embodiment's slide block 230.Similarly, smooth drive surfaces 231 can be almost parallel with the center line of the counterweight shown in Fig. 2.The counterweight that this embodiment can and be positioned at around slide block uses together or does not use together with counterweight.Recess 232 and 234 is shown as and receives multiple spring 236,238,240 and 242.
Fig. 5 shows the slide block 230 be arranged on around cam pin 229.As shown in the drawing, spring 236,238,240 and 242 can in sight by slide block 230 roughly towards right avertence pressure, the scroll axle sleeve 32 that thus also makes to rotate roughly moves right.As mentioned above, this will keep scroll wrap to contact.Although this figure is only illustrated also can have same position to Fig. 2 and Fig. 3 embodiment to Fig. 4 embodiment.
Although disclose embodiments of the invention, those skilled in the art will recognize that some modification will fall into scope of the present invention.Thus, following claim should be studied to determine true scope of the present invention and content.

Claims (2)

1. a scroll compressor, comprising:
First scroll, spiral helicine first scroll wrap that described first scroll has the first pedestal and extends from described first pedestal;
Second scroll, spiral helicine second scroll wrap that described second scroll has the second pedestal and extends from described second pedestal, described spiral helicine first scroll wrap of described first scroll and described spiral helicine second scroll wrap of the second scroll cooperatively interact to limit compression chamber;
Electric motor, described electric motor drives described second scroll is rotated relative to described first scroll to axle, and described axle has the cam pin extended up in slide block, described slide block is provided with slider bore, described slider bore has a smooth drive surfaces and is positioned at the curved surface of the position removed from described smooth drive surfaces, described cam pin is also provided with smooth drive surfaces, and between described slider bore and the periphery of described cam pin, be provided with gap, thus described slide block can move relative to described cam pin;
Described slide block extends up in axle sleeve, and described axle sleeve is extended from described second pedestal, and described slide block causes described second scroll relative to the motion of described first scroll relative to the motion of described cam pin;
Spring, described spring is by described spiral helicine second scroll wrap towards described spiral helicine first scroll wrap bias voltage, and described spring is positioned between the described slider bore of described slide block and described cam pin;
Counterweight, described counterweight is around described slide block and the tubular ring had around described axle, the extension part of counterweight upwards extends to be positioned at the radial outside of described axle sleeve, and the center line of wherein said counterweight is not parallel to described smooth drive surfaces, and described counterweight is made to carry out away from described spiral helicine first scroll wrap ground bias voltage to described spiral helicine second scroll wrap; And
Wherein, limit an angle between described center line and described smooth drive surfaces, described angle is between 5 ° to 20 °.
2. scroll compressor as claimed in claim 1, wherein said angle is between 7.5 ° to 17.5 °.
CN201210067228.3A 2011-04-06 2012-03-14 There is the scroll compressor that spring contacts with auxiliary maintenance scroll wrap Active CN102734156B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/080,703 US20120258003A1 (en) 2011-04-06 2011-04-06 Scroll compressor with spring to assist in holding scroll wraps in contact
US13/080,703 2011-04-06

Publications (2)

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CN102734156A CN102734156A (en) 2012-10-17
CN102734156B true CN102734156B (en) 2016-03-23

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US9188124B2 (en) 2012-04-30 2015-11-17 Emerson Climate Technologies, Inc. Scroll compressor with unloader assembly
US9115718B2 (en) 2013-01-22 2015-08-25 Emerson Climate Technologies, Inc. Compressor bearing and unloader assembly
CN104131974A (en) * 2013-10-25 2014-11-05 柳州易舟汽车空调有限公司 Scroll compressor
US10208750B2 (en) 2014-06-11 2019-02-19 Mitsubishi Electric Corporation Posture control of a balance weight in a scroll compressor
US10480508B2 (en) * 2015-02-12 2019-11-19 Mitsubishi Electric Corporation Scroll compressor
US10215175B2 (en) 2015-08-04 2019-02-26 Emerson Climate Technologies, Inc. Compressor high-side axial seal and seal assembly retainer
US11015598B2 (en) 2018-04-11 2021-05-25 Emerson Climate Technologies, Inc. Compressor having bushing
US11002276B2 (en) 2018-05-11 2021-05-11 Emerson Climate Technologies, Inc. Compressor having bushing
EP3904688A1 (en) * 2020-04-30 2021-11-03 Emerson Climate Technologies GmbH Improved coupling between crankshaft and orbiting scroll plate

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US20120258003A1 (en) 2012-10-11
DE102012003002A1 (en) 2012-10-11
CN102734156A (en) 2012-10-17

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