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Title:
PUMP
Document Type and Number:
WIPO Patent Application WO/1999/034115
Kind Code:
A1
Abstract:
A pump including a main body (100) having a compression chamber (140) compressing a fluid or gas applied through an intake (111), and then forcing it out through an outlet (121); a plate (210) formed within the main body (100); conical parts (240) each installed to linearly contact the plate (210) and them; and a cutoff (260) transversely installed on the plate (210) for blocking the slant portions. The fluid or gas in the compression chamber (140) is compressed by volumetric variation of right and left hermetic spaces formed between the linear contact, produced by relative motions of the plate (210) and the conical parts, and the cutoff (260).

Inventors:
Mang, Ki Ho (302 Park-Heights 241-21, Kochok 2-dong Kuro-ku Seoul 152-082, KR)
Application Number:
PCT/KR1998/000454
Publication Date:
July 08, 1999
Filing Date:
December 22, 1998
Export Citation:
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Assignee:
Mang, Ki Ho (302 Park-Heights 241-21, Kochok 2-dong Kuro-ku Seoul 152-082, KR)
International Classes:
F04B1/20; F04B19/02; F04B27/08; F04C9/00; (IPC1-7): F04B19/02; F04C9/00
Foreign References:
US4540343A1985-09-10
DE3206286A11983-09-08
DE29607300U11996-09-05
Attorney, Agent or Firm:
Suh, Man Kyu (3rd floor Jung-An Building 827-64, Yoksam-dong Kangnam-ku Seoul 135-080, KR)
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Claims:
WHAT IS CLAIMED IS :
1. A pump comprising: a main body having a compression chamber compressing a fluid or gas applied through an intake, and then forcing it out through an outlet; a plate formed within the main body; conical parts each installed to linearly contact the plate and each having a slant portion between the plate and them; and a cutoff transversely installed on the plate for blocking the slant portions; wherein the fluid or gas in the compression chamber is compressed by volumetric variation of right and left hermetic spaces formed between the linear contact, produced by relative motions of the plate and the conical parts, and the cutoff.
2. A pump according to claim 1, wherein the plate is installed in the middle of the compression chamber to divide the compression chamber into upper and lower portions, and the conical parts are each installed to be symmetrical with one another in the upper and lower portions of the compression chamber tilting to one side, and oscillate in the compression chamber, thus performing the relative motions, said pump further comprising a supply path allowing the upper portion of the compression chamber to communicate with the lower portion of said chamber with the right and left hermetic spaces diagonally communicating with each other.
3. A pump according to claim 2, wherein the main body includes upper and lower bodies each having a semi spherical interior, and forming the compression chamber of spherical shape by their connection, and the conical parts have a center ball installed in the center of the compression chamber's interior and rotating about the rotating shaft, and each conical part has a rotating part provided to the rotating shaft tilting to one side, and having an inner section closely contacting the center ball and an outer section closely contacting the compression chamber's inner spherical surface; a rocking part surrounding the rotating part's conical section; and lubricating means changing the rotating part's rotating motion into the rocking part's oscillation.
4. A pump according to claim 3, wherein the cutoff slides up and down by the oscillation of the rocking parts each installed in the upper and lower portions of the compression chamber for blocking the upper and lower portions of the compression chamber without interrupting the motions of the rocking parts.
5. A pump according to claim 3, wherein the supply path is provided to the upper and lower bodies of the main body.
6. A pump according to claim 3, wherein the lubricating means are bearings installed between the rotating part and the conical sections of the rocking parts.
7. A pump according to claim 1, wherein the plate is installed in the compression chamber tilting to one side to divide the compression chamber into upper and lower portions, and the conical parts are each fixedly installed in the upper and lower portions of the compression chamber, and performing the relative motions by the plate's oscillation, said pump further comprising a supply path allowing the upper portion of the compression chamber to communicate with the lower portion of said chamber with the right and left hermetic spaces diagonally communicating with each other.
8. A pump according to claim 7, wherein the plate includes: a coupling race; a rotating disk inserted into the coupling race and rotating about the rotating shaft tilting to one side; and lubricating means changing the rotating disk's rotating motion into the plate's oscillation.
9. A pump according to claim 8, wherein the lubricating means includes bearings installed between the rotating disk's operating parts within the coupling race, and a cover sealing the coupling race for preventing an oil supplied to the coupling race from flowing into the compression chamber.
10. A pump according to claim 7, wherein the plate has a sealing member at its outer circumference contacting the main body for sealing the compression chamber divided into the upper and lower portions.
11. A pump according to claim 7, wherein the supply path is formed passing through the plate diagonally centering on the cutoff.
12. A pump according to claim 7, wherein the cutoff is fixedly mounted on the plate.
13. A pump according to claim 7, wherein the main body includes: a middle body having the compression chamber; an upper body having an intake through which a fluid or gas is introduced into the compression chamber, an upper conical part with a slanting portion joined to the middle body's upper section, and an upper cutoff guide hole formed on the slanting portion of the upper conical part to receive the cutoff's upper section by the plate's oscillation; and a lower body having an outlet through which the fluid or gas in the compression chamber is forced out, a lower conical part with a slanting portion joined to the middle body's lower section, and a lower cutoff guide hole formed on the slanting portion of the lower conical part to receive the cutoff's lower section by the plate's oscillation.
Description:
PUMP BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a pump compressing fluid, gas, air, etc. More particularly, it relates to a pump which compresses a fluid or gas supplied to a compression chamber through an intake and forces it out through an outlet by oscillating rocking parts joined to a rotating shaft of a motor.

Description of the Prior Art Pumps are devices that transfer fluids or gases by suction or pressure, and there are atmospheric pumps, water supply pumps, compression pumps, etc. according to use. These pumps compress gases or fluids by the rotating motion of blades or rotors, or the reciprocating motion of pistons and transfer them. That is, in the pumps that use the rotating force of their blades to compress and transfer gases or fluids heavy loads are applied to their blades not to tightly compress them, thus exhibiting poor compression efficiency.

In addition, the pumps using the rotors to compress fluids or gases are usually employed to compress and transfer a refrigerant of an air conditioner, and exert small pumping force. They induce compressive force by the organic action of various components to decrease the compression efficiency so they cannot transfer materials of high viscosity such as paints.

The pumps compressing air by the reciprocating

motion of their pistons are used for air compressors, etc., and need accessory components for reciprocating the pistons, thus increasing the production costs.

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a pump that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.

An object of the present invention is to provide a pump which can perfectly compress and smoothly transfer materials of high viscosity like paints as well as gases or fluids by the high compression efficiency, and assures trouble-free performance with simple structure, simultaneously with lowering the production costs of compressed gases and compressed fluids by using efficient compression means.

Another object of the present invention is to provide a pump which forces fluids or gases into a compression chamber formed within its main body, and firstly and secondarily compresses the introduced fluids or gases in the compression chamber by rocking parts joined to a rotating shaft rotating by a motor.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the

appended drawings.

To achieve these and other advantages and in accordance with the purpose of the present invention, there is disclosed a pump including a main body having a compression chamber compressing a fluid or gas applied through an intake, and then forcing it out through an outlet; a plate formed within the main body; conical parts each installed to linearly contact the plate and each having a slant portion between the plate and them; and a cutoff transversely installed on the plate for blocking the slant portions. The fluid or gas in the compression chamber is compressed by volumetric variation of right and left hermetic spaces formed between the linear contact, produced by relative motions of the plate and the conical parts, and the cutoff. The plate is installed in the middle of the compression chamber to divide the compression chamber into upper and lower portions, and the conical parts are each installed to be symmetrical with one another in the upper and lower portions of the compression chamber tilting to one side, and oscillate in the compression chamber, thus performing the relative motions. The pump further includes a supply path allowing the upper portion of the compression chamber to communicate with the lower portion of the chamber with the right and left hermetic spaces diagonally communicating with each other.

The main body includes upper and lower bodies each having a semi-spherical interior, and forming the compression chamber of spherical shape by their

connection, and the conical parts have a center ball installed in the center of the compression chamber's interior and rotating about the rotating shaft, and each conical part has a rotating part provided to the rotating shaft tilting to one side, and having an inner section closely contacting the center ball and an outer section closely contacting the compression chamber's inner spherical surface; a rocking part surrounding the rotating part's conical section; and bearings changing the rotating part's rotating motion into the rocking part's oscillation.

According to another aspect of the present invention, the plate includes a coupling race; a rotating disk inserted into the coupling race and rotating about the rotating shaft tilting to one side; and bearings changing the rotating disk's rotating motion into the plate's oscillation.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE ATTACHED DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the drawings:

In the drawings: FIG. 1 is a perspective view for describing the mechanism of a pump in accordance with the present invention; FIGS. 2a and 2b depict the compression process in accordance with the present invention; FIG. 3 is an exploded perspective view of the pump in accordance with a first preferred embodiment of the present invention; FIG. 4 is a front sectional view of the pump in accordance with the first preferred embodiment of the present invention; FIG. 5 is a plane sectional view of the pump in accordance with the first preferred embodiment of the present invention; FIG. 6 is a perspective view of the pump's cutoff in accordance with the first preferred embodiment of the present invention; FIG. 7 is a partially sectional view of the operating state of the pump in accordance with the first preferred embodiment of the present invention; FIG. 8 depicts the pump's conical parts in accordance with the first preferred embodiment of the present invention; FIG. 9 depicts the pump's rocking part in accordance with the first preferred embodiment of the present invention; FIG. 10 depicts the operating state of the pump's conical part and rocking part in accordance with the first preferred embodiment of the present invention;

FIG. 11 is an exploded perspective view of a pump in accordance with a second preferred embodiment of the present invention; FIG. 12 is an exploded perspective view of the pump in accordance with the second preferred embodiment of the present invention; FIGS. 13a and 13b depict the operating state of the pump in accordance with the second preferred embodiment of the present invention; FIG. 14 is a plane sectional view showing the efflux route of a fluid flowing into the pump in accordance with the second preferred embodiment of the present invention; and FIG. 15 is a sectional view of a supply path formed in the pump's plate in accordance with the second preferred embodiment of the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENT Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

The inventive pump includes a main body having a compression chamber compressing fluids or gases introduced through an intake and forcing them out through an outlet, a plate formed within the main body, conical parts each installed linearly contacting the plate to form a slant portion between the plate and them, and a cutoff installed transversely on the plate to block the slant portions.

In the above pump the fluids or gases within the

compression chamber are compressed by volumetric variation of right and left hermetic spaces created between the linear contact made by the relative motions of the plate and the conical parts and the cutoff.

Referring to FIGS. 1,2a, and 2b, the compression of the fluids or gases is now described.

As a conical part 30 rotates about a rotating shaft 31, a rocking part 20 joined to conical part 30 shakes.

The pump's compression chamber is divided by a cutoff 40, and has two hermetic spaces 42 and 44 formed as rocking part 20 comes in linear contact with a plate 10. Intake space 44 and compression space 42 are formed by linear contact 22.

Therefore, as rocking part 20 oscillates, as shown in FIGS. 2a and 2b, a fluid in the compression chamber is compressed by varying the volume of the respective hermetic spaces 42 and 44 created between linear contact 22 and cutoff 40 by moving linear contact 22 according to the relative motions of rocking part 20 and plate 10.

That is, according to the relative motions of rocking part 20 and plate 10, linear contact 22 is moved continuously to vary the volume of each of intake space 44 and compression space 42, and the fluid is sucked and compressed by volumetric variation.

FIG. 2a depicts that the linear contact between rocking part 20 and plate 10 passes an intake 51, and FIG. 2b shows that the linear contact between rocking part 20 and plate 10 is moved to an outlet 52.

As linear contact 22 is moved, suction occurs continuously in intake space 44 and compression is

produced in compression space 42. The compressed fluid or gas is forced out through outlet 52.

A first preferred embodiment of the pump of the present invention compressing the fluid or gas is now described referring to FIGS. 3 to 10.

In the first preferred embodiment of the present invention the plate is fixed, and the compression is produced by rocking the conical parts that are installed to rotate linearly contacting the plate.

Main body 100 includes an upper body 110, a lower body 120 each having a semi-spherical interior, and a spherical compression chamber 140 formed by joint of upper body 110 and lower body 120. Upper body 110 has an intake 111 through which a fluid or gas is introduced, and lower body 120 has an outlet 121 through which the compressed fluid or gas is forced out.

Compression chamber 140 formed in main body 100 has a disk-shaped plate 210 to divide compression chamber 140 into upper and lower portions in the middle. A center ball 220 is installed at the center in compression chamber 140. A rotating shaft 230 is connected with center ball 220 passing through it, and rotating shaft 230 rotates by a motor 221 to turn center ball 220.

Compression chamber 140 divided into upper and lower parts by plate 210 has conical parts 240 each provided to rotating shaft 230 slanting to one side and symmetrical with each other. These conical parts 240 come to precipitate by the rotating motion of rotating shaft 230.

Each of conical parts 240 includes an outer section 241, an inner section 242, and a conical section 243, as shown

in FIG. 8. Outer section 241 closely contacts an inner spherical portion of compression chamber 140, and inner section 242 comes in close contact with an outer spherical portion of center ball 220. Rocking part 250 is joined to this conical section 243. Lubricating devices are mounted between conical part 240's conical section 243 and rocking part 250 to assist conversion of conical parts 240'rotations into rocking part 250's oscillating motion. Preferably, bearings 270 are used as the lubricating devices. In addition, each rocking part 250 has a conical inside 251 and a conical outside 252, as shown in FIG. 9. Conical inside 251 is joined to closely contact conical part 240's conical section 243, and conical outside 252 is joined to closely contact plate 210's plane.

As shown in FIG. 4, plate 210's plane is slant to the center to closely contact conical outside 252.

Compression 140 has a cutoff 260 to divide the space of compression chamber 140. Cutoff 260 is joined to plate 210 to slide up and down, as shown in FIG. 6, and slides up and down by rocking part 250's oscillation. For joint of cutoff 260 plate'210 has a guide groove 262.

Compression chamber 140 is divided by cutoff 260, and has two hermetic spaces by making rocking part 250's conical outside 252 and plate 210's one side linearly contact.

Compression chamber 140 with two hermetic spaces by cutoff 260 is divided into upper and lower portions by plate 210, and has a supply path 211 to allow the upper portion to communicate with the lower portion. Supply path 211 allows the upper portion of compression chamber

140 to communicate with the lower portion of chamber 140 with the hermetic spaces diagonally communicating with each other. Thus, as rocking part 250 oscillates, two hermetic spaces are changed in volume, and the fluid supplied to compression chamber 140 is collected on one side by this volumetric variation and compressed by cutoff 260. The rotating motions of conical parts 240 are converted to the oscillation of rocking part 250, and compression chamber 140 is changed in volume, thus compressing the fluid.

The compressed fluid is supplied to the lower portion of compression chamber 140 from its upper portion through supply path 211 provided to upper and lower bodies 110 and 120. That is, compression chamber 140 is divided into upper and lower portions by plate 210, and compression is produced within the respective upper and lower portions of compression chamber 140. The fluid compressed in the upper portion of compression chamber 140 is supplied to the lower portion through supply path 211 to be compressed within the lower portion of compression chamber 140 once again, thus obtaining a high compression efficiency.

The following description relates to the operation of the inventive pump in accordance with the first preferred embodiment of the present invention.

As rotating shaft 230 turns, a gas or fluid flows into compression chamber 140 through intake 111 of upper body 110 of main body 100. As center ball 220, joined to rotating shaft 230 by the rotating motion of rotating shaft 230, turns, conical parts 240 each provided to

rotating shaft 230 slanting to one side come to rotate about shaft 230.

Since bearings 270 are provided between conical parts 240 and rocking parts 250, rocking parts 250, joined to conical section 243 of conical part 240, oscillate.

The oscillation of rocking parts 250 collects the fluid or gas on one side within compression chamber 140, and the fluid is blocked by cutoff 260 to be compressed.

Compression chamber 140 is divided into upper and lower portions by plate 210, and cutoff 260 is slidably joined to plate 210, as shown in FIG. 6, thus blocking the respective upper and lower portions of compression chamber 140.

Accordingly, the upper portion of compression chamber 140 compresses the fluid or gas, and the lower portion secondarily compresses the compressed fluid that is introduced thereunto through supply path 211.

Cutoff 260 is installed to block compression chamber 140 sliding to its upper and lower portions by the oscillation of rocking parts 250, and since rocking parts 250 are each disposed to be symmetrical with one another in the upper and lower portions of chamber 140, chamber 140's upper portion absorbs and compresses the fluid or gas, and the compressed fluid or gas is introduced to chamber 140's lower portion through supply path 211 and compressed once again therein to be forced out to outlet 121. The supplied fluid or gas is compressed through two steps of compression, thus obtaining a high compression force.

FIGS. 11 to 15 show a pump according to a second preferred embodiment of the present invention.

In the second preferred embodiment of the present invention, conical parts are mounted on upper and lower portions, respectively, and the plate, disposed tilting to one side to linearly contact a slant portion of the respective conical parts, oscillates thus producing a compression.

A body 600 includes a middle body 630 with a compression chamber 640 containing a fluid or gas, and upper and lower bodies 610 and 620 each joined to upper and lower parts of middle body 630. Upper body 610 has an intake 611 through which the fluid or gas is introduced into compression chamber 640, an upper conical part 612 with a slant portion closing the upper section of compression chamber 640 and joined to the upper section of middle body 630, and an upper cutoff guide hole 613 formed on upper conical part 612's slant portion to receive the upper portion of cutoff 760 by oscillation of a plate 750.

Lower body 620 has an outlet 621 through which a fluid or gas compressed in compression chamber 640 of middle body 630 is forced out, a lower conical part 622 with a slant portion closing the lower section of compression chamber 640 and joined to the bottom of middle body 630, and a lower cutoff guide hole 623 formed on lower conical part 622's slant portion to receive the lower portion of cutoff 760 by oscillation of plate 750.

Disk-shaped plate 750 dividing compression chamber 640 into upper and lower portions is slant to one side

within compression chamber 640, and rocks linearly contacting slant portions of upper and lower conical parts 612 and 622.

Cutoff 760 is fixedly mounted on plate 750 for dividing compression 640's interior, and a supply path 711 is formed diagonally passing through plate 750 centering around cutoff 760, as shown in FIG. 15. Thus, upper and lower portions of compression chamber 640 communicate with each other by supply path 711. Plate 750 has a coupling race a, and a rotating disk 751 joined to coupling race a is received in coupling race a. A lower thrust bearing 753 is disposed between the bottom of rotating disk 751 and coupling race a. A cover 752 is fixed to plate 750 via bolts 755 to seal coupling race a, thus preventing leakage of an oil supplied to coupling race a through an oil path 730'. An upper thrust bearing 754 is interposed between the bottom of cover 752 and upper surface of rotating disk 751. A sealing member 650 is joined to plate 750's outer circumference in order to maximally enhance the compression efficiency as plate 750 contacts a spherical part of compression chamber 640 of middle body 630.

As described above, plate 750 is of disk shape and installed tilting to one side. Rotating disk 751 received in plate 750's coupling race 750a is of round shape, and joined to rotating shaft 730 so as to slant to one side.

Accordingly, plate 750 rocks linearly contacting slant portions of upper and lower conical parts 612 and 622 by the rotation of rotating disk 751. Since rotating disk 751 seated on coupling race 750a of plate 750 is

joined to rotating shaft 730 rotating by motor 721, plate 750 oscillates by the rotation of rotating disk 751. As plate 750 rocks, the fluid or gas supplied to compression chamber 640 is compressed by cutoff 760 fixed to plate 750. Cutoff 760 that serves to compress the fluid or gas is moved into upper and lower cutoff guide holes 613 and 623 of upper and lower conical parts 612 and 622 by the oscillation of plate 750.

The following description concerns the operation of the pump in accordance with the second preferred embodiment of the present invention.

As rotating shaft 730 turns, the fluid or gas flows into compression chamber 640 of middle body 630 through intake 611 of upper body 610 forming main body 600.

According to the rotating motion of rotating shaft 730, rotating disk 751, joined to rotating shaft slanting to one side, comes to rotate.

Thus, plate 750 having rotating disk 751 seated in coupling race 750a and supported by upper and lower thrust bearings 754 and 753 comes to rock linearly contacting upper and lower conical parts 612 and 622 formed on upper and lower bodies 610 and 620. That is, cover 752 joined to the upper section of plate 750 linearly contacts the slant portion of upper conical part 612 of upper body 610, and plate 750 rocks with its lower section linearly contacting lower conical part 622 of lower body 620. The gas or fluid supplied to compression chamber 640 of middle body 630 is once compressed according to the volumetric variation due to the linear contact between cover 752 joined to plate 750 and upper

conical part 612's slant portion, and flows into the lower portion of compression chamber 640 through supply path 711 of plate 750. The fluid or gas in compression chamber 640's lower portion is secondarily compressed according to the volumetric variation due to the linear contact between lower conical part 622's slant portion and plate 750, and then forced out through outlet 621.

Cutoff 760 joined to plate 750 collects the compressed fluid or gas on one side by the volumetric variation caused by rocking plate 750.

The upper section of cutoff 760 fits in upper cutoff guide hole 613 provided to upper body 610, and the lower section of cutoff 760 is inserted into lower cutoff guide hole 623 of lower body 620 so that the respective upper and lower portions of chamber 640 are sealed by cutoff 760 all the time. Thus, the gas or fluid compressed in compression chamber 640 is compressed by cutoff 760 again to flow into compression chamber 640's lower portion through supply path 711 of plate 750, as shown in FIG. 14. In addition, the fluid or gas in compression chamber 640's lower portion is secondarily compressed by the volumetric variation created as plate 750's bottom linearly contacts the slant portion of lower conical part 622.

Accordingly, the compression is produced in compression chamber 640's upper and lower portions, and the fluid or gas is compressed by high pressure tombe forced out through outlet 621, as shown in FIG. 14.

When the linear contact between plate 750's upper section and upper conical part 612's slant portion comes

to cutoff 760, cutoff 760's upper section is inserted into upper cutoff guide hole 613, as shown in FIG. 13a, and the linear contact is continuously moved not being influenced by cutoff 760. When the linear contact between plate 750's lower section and lower conical part 622's slant portion is moved to cutoff 760, cutoff 760's lower section is inserted into lower cutoff guide hole 623, as shown in FIG. 13b. Sealing member 650, joined to plate 750's outer circumference, rocks closely contacting the spherical portion of middle body 630 as plate 750 oscillates, thus preventing the fluid or gas compressed in compression chamber 640's upper portion from being mixed with that in compression chamber 640's lower portion.

Since disk-shaped plate 750 that is installed slanting to one side, it oscillates linearly contacting the slant portion of the respective upper and lower conical parts 612 and 622, thus maximizing the compression efficiency.

Accordingly, in the first and second preferred embodiments, the fluid or gas is compressed by the linear contact of the conical parts and plate, and such a compression is carried out twice, thus obtaining the high compression efficiency. This fluid or gas is transferred by high compression force, and this invention is usable for a vacuum pump. Thus, the present invention assures high compression and smooth transfer of fluids or gases, and even materials of high viscosity such as paints. In addition, the present invention provides the high compression efficiency by the oscillation of the rocking

part and trouble-free performance with simple structure.

It will be apparent to those skilled in the art that various modifications and variations can be made in the pump of the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.