KR20080093517A - Scroll compressor with stop structure to prevent slider block movement - Google Patents

Scroll compressor with stop structure to prevent slider block movement Download PDF

Info

Publication number
KR20080093517A
KR20080093517A KR1020070037304A KR20070037304A KR20080093517A KR 20080093517 A KR20080093517 A KR 20080093517A KR 1020070037304 A KR1020070037304 A KR 1020070037304A KR 20070037304 A KR20070037304 A KR 20070037304A KR 20080093517 A KR20080093517 A KR 20080093517A
Authority
KR
South Korea
Prior art keywords
slider block
eccentric pin
scroll
stop
base
Prior art date
Application number
KR1020070037304A
Other languages
Korean (ko)
Inventor
질리 썬
Original Assignee
스크롤 테크놀로지스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 스크롤 테크놀로지스 filed Critical 스크롤 테크놀로지스
Priority to KR1020070037304A priority Critical patent/KR20080093517A/en
Publication of KR20080093517A publication Critical patent/KR20080093517A/en

Links

Images

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
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0269—Details concerning the involute wraps
    • 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
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F04C2240/40—Electric motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Abstract

A scroll compressor with a stop structure to prevent a slider block from moving is provided to prevent a slider block from being contact with a rear surface of an orbit scroll or from deviating from an eccentric pin. A driveshaft(34) includes an eccentric pin(136) received in a slider block(138). The slider block is provided at the uppermost surface thereof with a notch(142). The eccentric pin includes a stop(140) on the uppermost surface. Additional movement of the stop is prevented when the slider block moves toward a surface(60). The size of the eccentric pin is smaller than the size of a bore formed in the slider block. The slider block easily separates from the eccentric pin. A first flat surface(54) is pressed with respect to a second flat surface(52) when a scroll compressor is operated.

Description

SCROLL COMPRESSOR WITH STOP STRUCTURE TO PREVENT SLIDER BLOCK MOVEMENT}

1A illustrates a conventional scroll compressor.

1B illustrates another feature of a conventional scroll compressor.

1C illustrates another feature of a conventional scroll compressor.

2A illustrates the scroll compressor of the present invention.

2B is a top view of a portion of the invention.

<Description of the symbols for the main parts of the drawings>

20: scroll compressor 22: non-orbital scroll

23: spiral wrap 24: orbital scroll

26: Boss 27: Base

32: motor 34: shaft

36: slider block

The present invention relates to a scroll compressor having a slider block driven by an eccentric pin from a drive shaft, wherein the eccentric pin is for preventing the slider block from moving upwards in contact with the rear surface of the orbital scroll or beyond the eccentric pin. Stop structures are provided.

Scroll compressors have been widely used in the field of refrigerant compression. In a scroll compressor, the first scroll member has a spiral wrap and a base extending from the base. The second scroll member has a spiral wrap and a base extending from the base. The helical wraps are fitted to form a compression chamber. One of the two scroll members causes orbital motion relative to the other scroll member, which reduces the size of the compression chamber and compresses the contained fluid.

In certain types of scroll compressors, the drive mechanism for orbiting the scroll member includes a drive shaft in rotational motion and has an eccentric pin extending upwards to the slider block. The slider block is received in a boss extending towards the bottom of the orbital scroll. The eccentric pin drives the orbital scroll through the slider block. According to a problem with this type of scroll compressor, the slider block is often in contact with the rear face of the base of the orbital scroll and moved upwards. This results in undesirable wear.

This still causes wear in the prior art, despite modifying the slider block to place a bump or other structure on the top surface to minimize the contact surface area including the orbital scroll base.

In a disclosed embodiment of the invention, the stop structure is provided on an eccentric pin. This stop structure prevents the slider block from contacting the orbital scroll and moving upward. In one embodiment, the stop structure is formed with a somewhat enlarged upper portion of the eccentric pin that fits into the notch in the slider block. In most of these two cases, the slider block will start to move upward in the vertical direction even though it is not mostly in contact, so that the stop contacts the stop, which prevents further movement. In one embodiment, the outer dimension of the eccentric pin at the stop is smaller than the inner dimension of the bore passing through the slider block as a whole. This helps the slider block to be assembled with slider pins.

These and other features of the present invention will be apparent from the drawings and the following description.

Scroll compressor 20 is shown in FIG. 1A and is known in the art. Non-orbiting scroll 22 has a spiral wrap 23 extending from the base. The orbiting scroll 24 has a boss 26 that extends from the base portion 27 to the wrap 25 in the opposite direction.

The coolant is compressed in a compression chamber formed between the lap 23 and the lap 25 and transferred to the discharge port 30. The coolant enters the compressor housing through a section port 30.

The motor 32 drives the shaft 34 to rotate. The shaft 34 includes an eccentric pin 36 received in a slider block 38. The slider block is disposed between the eccentric pin 36 and the boss and in the boss 26. When the shaft 34 is rotated, the eccentric pin moves the slider block, so that the orbiting scroll 24 is orbited. The anti-rotation coupling 37 causes the orbital scroll to orbit instead of rotating.

In the problem according to the prior art, the scroll compressor is shown in Figs. 1B and 1C. In general, the slider block 38 has an opening for receiving an eccentric pin 36 which is larger than the pin 36. The flat surface 54 on the eccentric pin 36 engages the flat surface 52 in the bore in the slider block 38. When the motor is driven in the forward direction of rotation, the flat surface 54 is in contact with the flat surface 52 due to the load in the scroll compressor. When this load is removed, the two surfaces are released from each other.

1C is a view perpendicular to FIG. 1B. As shown, the “flat” surface 54 is not substantially flat but has a somewhat cylindrical shape. In the prior art, the problem often arises that the slider block 38 is connected to the rear surface 60 of the base 27 and moved upward in the vertical direction.

The present invention is shown in Figures 2A and 2B. 2A and 2B, the driveshaft 34 is provided with an eccentric pin 136 that is received in the slider block 138. As shown in FIG. The slider block 138 is provided with a notch 142 on the vertical top surface. The eccentric pin 36 is provided with a stop 140 on the vertical top surface. When the slider block 138 begins to move upwards towards the surface 60, the stop 140 will be prevented from further movement. The outer dimension of the eccentric pin at stop 140 is shown by B. This dimension is smaller than the dimension of the bore in slider block 138, shown as A. FIG. Thus, the slider block can easily fall onto the eccentric pin. However, when the scroll compressor is operated, the flat surface 54 will be pressed against the flat surface 52 and the stop will move over the notch 142. As shown in FIG. 2B, the notch 142 extends longer than the stop 140 extends. This eliminates any alignment problem with flat surfaces joining.

Accordingly, the present invention provides an easy and effective way to prevent the slider block from contacting the rear of the base of the orbital scroll. Although preferred embodiments of the invention have been disclosed, those skilled in the art will recognize certain variations that are within the scope of the invention. For this reason, the following claims should be studied to determine the true scope and content of this invention.

Claims (10)

In the scroll compressor, the scroll compressor A first scroll member having a base and having a spiral wrap extending from the base, A second scroll member having a base and having a spiral wrap extending from the base, the spiral wrap of the first and second scroll members being fitted to form a compression chamber, A drive shaft and a motor for driving the drive shaft, the drive shaft having an eccentric pin extending from one end of the drive shaft, The second scroll member is orbited by the eccentric pin, the second scroll member having a boss extending in a direction facing away from the base with respect to the helical wrap, the boss having a slider block and an eccentric pin Has an opening to receive, the slider block is located midway between the boss and the eccentric pin, the boss having an upper surface forming a rear surface of the base of a second scroll member, and A stop structure on the eccentric pin for preventing movement of the slider block towards the rear surface and for selectively contacting the stop surface on the slider block. The scroll compressor of claim 1, wherein the eccentric pin has a drive flat surface that is selectively moved to engage a mating flat surface in the bore of the slider block. 3. The scroll compressor of claim 2, wherein the flat surface on the eccentric pin has a somewhat barrel shape. 2. The stop according to claim 1, wherein said stop comprises a single stop extending beyond the nominal surface of said eccentric pin, said stop surface in said slider block of said slider block selectively contacting said stop. And a notch in the distal surface. The scroll as claimed in claim 1, wherein the outermost dimension on the eccentric pin including the stop structure is smaller than the inner dimension of the bore in the slider block such that the slider block can be moved beyond the eccentric pin. compressor. The stop structure on the slider block according to claim 1, wherein the eccentric pin and the slider block have matching driving surfaces that contact when the second scroll member makes an orbital movement in the forward direction, and the stop structure on the slider block measured along the driving surface. The length of the scroll compressor, characterized in that greater than the length of the stop structure on the eccentric pin measured along the drive surface. In the scroll compressor, the scroll compressor A first scroll member having a base and having a spiral wrap extending from the base, A second scroll member having a base and having a helical wrap extending from the base, wherein the helical wrap of the first and second scroll members is fitted to form a compression chamber, A drive shaft and a motor for driving the drive shaft, the drive shaft having an eccentric pin extending from one end of the drive shaft, The second scroll member is orbited by the eccentric pin, the second scroll member having a boss extending in a direction facing away from the base with respect to the helical wrap, the boss having a slider block and an eccentric pin Has an opening to receive, the slider block is located midway between the boss and the eccentric pin, the boss having an upper surface forming a rear surface of the base of the second scroll member, the eccentric pin being the slider block. Has a drive flat surface that is selectively moved to fit with a matching flat surface within the bore of A stop structure on the eccentric pin for preventing movement of the slider block towards the rear surface and for selectively contacting the stop surface on the slider block, the stop extending beyond the nominal surface of the eccentric pin Scroll compressor comprising a single stop. 8. The scroll compressor of claim 7, wherein the flat surface on the eccentric pin has a somewhat cylindrical shape. 8. The scroll of claim 7, wherein the outermost dimension on the eccentric pin including the stop structure is smaller than the inner dimension of the bore in the slider block such that the slider block can be moved beyond the eccentric pin. compressor. 8. The stop structure on the slider block as recited in claim 7, wherein the eccentric pin and the slider block have matching drive surfaces that contact when the second scroll member makes an orbital movement in the forward direction, and the stop structure on the slider block measured along the drive surface. The length of the scroll compressor, characterized in that greater than the length of the stop structure on the eccentric pin measured along the drive surface.
KR1020070037304A 2007-04-17 2007-04-17 Scroll compressor with stop structure to prevent slider block movement KR20080093517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070037304A KR20080093517A (en) 2007-04-17 2007-04-17 Scroll compressor with stop structure to prevent slider block movement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070037304A KR20080093517A (en) 2007-04-17 2007-04-17 Scroll compressor with stop structure to prevent slider block movement

Publications (1)

Publication Number Publication Date
KR20080093517A true KR20080093517A (en) 2008-10-22

Family

ID=40154006

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070037304A KR20080093517A (en) 2007-04-17 2007-04-17 Scroll compressor with stop structure to prevent slider block movement

Country Status (1)

Country Link
KR (1) KR20080093517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022240060A1 (en) * 2021-05-12 2022-11-17 한온시스템 주식회사 Scroll compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022240060A1 (en) * 2021-05-12 2022-11-17 한온시스템 주식회사 Scroll compressor

Similar Documents

Publication Publication Date Title
US9850904B2 (en) Scroll compressor
US5378129A (en) Elastic unloader for scroll machines
KR0139064B1 (en) Scroll compressor
US8348647B2 (en) Scroll type compressor including a suction pipe having iron portion and copper portion
US7150609B2 (en) Eccentric coupling device in radial compliance scroll compressor
US20120258003A1 (en) Scroll compressor with spring to assist in holding scroll wraps in contact
JP2012057515A (en) Scroll compressor
US7273362B2 (en) Scroll compressor with an eccentric pin having a higher contact point
US6585502B2 (en) Scroll compressor with slider block having circular portions in an inner bore
US6461131B2 (en) Radial compliance scroll compressor
US20090317276A1 (en) Scroll compressor having rotation prevention mechanism
KR960014083B1 (en) Scroll compressor
US6676391B2 (en) Variable quantity control apparatus for variable radius type scroll compressor
US7476092B1 (en) Scroll compressor with tapered slider block
US7284972B2 (en) Scroll compressor with stop structure to prevent slider block movement
KR20080093517A (en) Scroll compressor with stop structure to prevent slider block movement
KR100455421B1 (en) Devise preventing reverse for scroll compressor
US6663363B2 (en) Driving pin structure for scroll compressor
EP1983196A1 (en) Scroll compressor with stop structure to prevent slider block movement
JP2008267282A (en) Scroll compressor having stop structure for preventing movement of slider block
JP4051121B2 (en) Hermetic compressor
US6672851B2 (en) Scroll-type compressors
WO2005068841A1 (en) Scroll fluid machine
US20120244026A1 (en) Counterweight incorporated into slider block for scroll compressor
US7247009B2 (en) Scroll compressor with slider block having upper surface over enlarged area

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination