KR100427398B1 - A scroll pump with a high pressure chamber and a low pressure chamber - Google Patents

Abstract

The present invention relates to a scroll fluid machine equipped with a high and low pressure part, and more particularly, to a scroll fluid machine equipped with a high and low pressure part to enable the high pressure part and the low pressure part to be interlocked by rotating a single drive shaft. It is mounted on one side of the high pressure part having a plurality of scroll chambers to be separated from each other so as to pump the fluid at a high pressure and the other side of the drive shaft mounted on the other side of the pump pumps the fluid at low pressure so that the injection amount and pressure can be properly adjusted It characterized in that it consists of a connection line for connecting the low pressure unit and the high, low pressure unit having a scroll chamber of each other.

Description

A scroll pump with a high pressure chamber and a low pressure chamber

The present invention relates to a scroll fluid machine equipped with a high and low pressure part, and more particularly, to a scroll fluid machine equipped with a high and low pressure part to enable the high pressure part and the low pressure part to be interlocked by rotating a single drive shaft.

In general, the scroll fluid machine adopts a well-known basic principle of scroll, and is produced as a product such as a compressor, an expander, a vacuum pump, or a conveyer as it is applied to pumping as well as compression and expansion of a fluid. Accordingly, the prior art of the scroll fluid machine is as follows.

Conventional scroll fluid machine, using a compression method by the synchronous rotational movement of the fixed scroll member and the swinging scroll member, the fixed scroll member is fixed to the main body, the pivoting scroll member is connected to a separate drive unit, The pivoting scroll member is rotated by applying power to make a linear contact with the fixed scroll member to compress or expand the fluid.

However, the conventional scroll fluid machine configured as described above has a problem that it is possible to use for low pressure but difficult to obtain high output.

Thus, in order to solve the above problems, a situation in which a scroll fluid machine capable of obtaining a high output is recently developed.

Figure 7 shows the "multi-scrolling fluid machine" of the Republic of Korea Patent Application No. 2000-31805 filed by the present applicant, first, the configuration is as follows.

A fluid collecting portion 101 having a discharge port 101a formed at the center thereof and three or more scroll chambers 102 having an inlet hole 101b formed at the periphery thereof are formed at equal intervals, and a vertical space portion 103 is formed in the middle thereof. A housing 100 formed; Three or more swinging scroll portions 201 mounted on the space portion 103 and assembled with the scroll chambers 102 are provided, and the driving cam shaft 202 and the three or more interlocking cam shafts 23 at the periphery thereof are provided at the center thereof. ) Is mounted horizontally, the central peripheral portion is characterized by consisting of a rocking member 200 formed with one or more fluid passage hole (204).

Therefore, when operating the scroll fluid machine configured as described above, first, when rotating the drive cam shaft 202 penetrated in the center of the housing 100, the eccentric cam mounted in the middle of the drive cam shaft 202 By being rotated at the same time, the swinging scroll unit 201, on which the eccentric cam is mounted, starts the swinging swing. At the same time, the interlocking camshaft 203 mounted at equal intervals is also interlocked and rotated through the entire swinging swing of the swinging scroll unit 201 to limit the swinging swing range of the swinging member 201.

That is, when the swinging member 201 swings as described above, the swinging scroll portion 201 mounted at equal intervals on the swinging member 200 is pivoted in the scroll chamber 102 formed in the housing 100. By doing so, the close contact portion and the space portion where the rocking scroll of the rocking scroll unit 201 and the fixed scroll of the scroll chamber 102 are mutually changed are alternately changed. Therefore, the fluid flowing into the inflow hole 101a is collected through the space portion repeated in the intervals and collected into the collecting portion 101 formed in the center of the housing, and then the air conditioning line through the discharge port 101b formed in the collecting portion 101. To be supplied.

However, the fluid machine configured as described above can obtain a high output, but the vibration is generated by the cam operation of the drive cam shaft and the interlocking cam shaft, which has a problem of generating a lot of noise during operation.

On the other hand, the above-described low pressure fluid machine has the advantage that it is possible to stabilize the discharge of the fluid, the above-described high pressure fluid machine has the advantage of obtaining a high suction force, the low pressure fluid machine and high pressure fluid The fluid machines in which the machines operate in conjunction as one device are unknown.

Accordingly, the present invention has been invented to solve the above problems, by allowing the high pressure portion and the low pressure pump to be interlocked through the rotation of a single drive shaft, to increase the suction efficiency, as well as to obtain a stable discharge of fluid. It is an object to provide a scroll fluid machine equipped with a high and a low pressure part.

In the operation of the high pressure part, as the rotating member centering on the drive shaft and the operating housing centering on the casing are simultaneously rotated, fluid may be moved in each scroll chamber formed between the rotating member and the operating housing. By making it possible, there is also a purpose to enable the precise operation by preventing the generation of vibration during operation of the high pressure portion.

In addition, even when the low pressure part is operated, the fluid moves in a single scroll chamber formed between the rotating member and the working housing by simultaneously rotating the rotating member centering on the drive shaft and the working housing centering on the casing. By making it possible, it is also intended to enable precise operation by preventing the occurrence of vibration during operation of the low pressure portion.

The present invention for achieving the above object is mounted on one side of the drive shaft and the high pressure portion having a plurality of scroll chambers are separated from each other so as to pump the fluid at high pressure and the other side of the drive shaft is mounted on the other side of the drive shaft fluid It is characterized in that it consists of a low pressure part having a single scroll chamber and a connection line connecting the high and low pressure parts to each other so that the pumping amount and pressure can be properly adjusted by pumping.

1 is a front sectional view showing a scroll fluid machine of the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along the line B-B in FIG.

4 is an enlarged view of part C of the present invention;

5 is an enlarged view of a portion D of the present invention.

Figure 6 is a schematic diagram showing the mounting position of the drive shaft and the cam shaft and the operation housing according to the present invention.

7 shows a conventional scroll fluid machine,

7A is a shear cross-sectional view,

FIG. 7B is a cross-sectional view taken along the line E-E in FIG. 7A.

Explanation of symbols for main parts of the drawings

1: drive shaft

11: fluid suction hole

2: high pressure part

21: rotating member

211: fixed scroll, c: camshaft

22: working housing

221: rocking scroll

23 casing

3: low pressure part

31: rotating member

311: fixed scroll, c: camshaft

32: working housing

321: rocking scroll

33: casing

4: connection line

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a scroll pump of the present invention, Figure 2 is a cross-sectional view taken along the line A-A of Figure 1, Figure 3 is a cross-sectional view taken along the line B-B of Figure 1, first described the configuration as follows.

The present invention is mounted on one side of the drive shaft (1) and mounted on the other side of the drive shaft (1) and the high pressure portion (2) having a plurality of scroll chambers are separated from each other so as to pump the fluid at a high pressure to the fluid at a low pressure It consists of a low pressure part (3) having a single scroll chamber and a connection line (4) connecting the high and low pressure parts (2, 3) to each other so as to adjust the ejection amount and pressure by pumping.

In particular, the fluid suction hole 11 is formed in the drive shaft 1 so as to suck the fluid for the first time and supply it to the high pressure unit 2.

The high pressure part 2 is rotated in coordination with the drive shaft 1, the rotation member 21 and the cam shaft (c) having three or more fixed scroll 211 and a plurality of cam shaft (c) around the center It is connected with the operating housing 22 for eccentrically rotating the outer side of the rotating member 21 to operate a plurality of rocking scrolls 221 assembled to the fixed scroll (211), and both sides of the operating housing (22) It consists of a casing 23 for supporting the eccentrically.

The low pressure portion (3), the rotating member 31 having a single fixed scroll (311) and a plurality of cam shafts (c) mounted around the center and rotates in coordination with the drive shaft (1), An operating housing 32 connected to the cam shafts c to eccentrically rotate the circumference of the rotating member 31 to operate the swinging scroll 321 assembled with the single fixed scroll 311, and the operating housing 32. It consists of the casing 33 which supports both sides of the eccentrically.

The connection line 4 connects the discharge hole 231 formed in the casing 23 of the high pressure part 2 and the inlet hole 331 formed in the casing 33 of the low pressure part 3, thereby providing a high pressure part 2. The high pressure fluid discharged from) is supplied to the low pressure section 3.

In more detail, a plurality of fixed scrolls 211 formed on the high pressure part 2 are formed on both sides of the rotating member 21 in double, and the fixed scrolls are also doubled on both inner sides of the working housing 22. A plurality of rocking scrolls 221 are assembled to 211 is formed. A single fixed scroll 311 formed in the low pressure portion 3 is formed on both sides of the rotating member 31 in double, and is assembled with the single fixed scroll 311 on both inner sides of the working housing 32. A single rocking scroll 321 is formed in duplicate.

In addition, the rotating member 21 of the high pressure part 2 is formed with a branch hole 211a for supplying fluid sucked in communication with the fluid suction hole 11 mounted to the drive shaft 1 to the plurality of fixed scrolls 211. The fluid discharge holes 221a are formed at the outer sides of the swing scrolls 221 of the operation housing 22.

In addition, the inlet hole 331 formed in the casing 33 of the low pressure portion 3 is formed in the central portion to supply fluid to the central portion of the single fixed scroll 311, the central portion of the rotating member 31 The fluid passage hole 31a is formed to send the introduced fluid to the opposite side, and at least one fluid discharge hole 32a is formed at the periphery of the side wall of the operation housing 32.

Circular holes 23a and 33a are formed at both ends of the casings 23 and 33 constituting the high and low pressure parts 2 and 3 and have the same center as the center of the drive shaft 1. Between the 23a and 33a and the drive shaft 1, bearings b for fixing the casings 23 and 33 to the drive shaft 1 are mounted.

4 is an enlarged view of part C of the present invention, wherein a plurality of cam mounting holes 212 are formed around the rotating member 21 constituting the high pressure part 2 to form an eccentric shaft formed in the middle of the cam shaft c. c1) is inserted to rotate, and a shaft mounting hole 222 is formed around the side wall of the operation housing 22 so that the rotation shafts c2 formed on both sides of the cam shaft c can be rotated.

5 is an enlarged view of a portion D of the present invention, in which a plurality of cam mounting holes 312 are formed around the rotating member 31 constituting the low pressure portion 3, and an eccentric shaft formed in the middle of the cam shaft c. (c1) is inserted to rotate, and the shaft mounting hole 322 is also formed around the side wall of the operating housing 32 is inserted so that the rotating shaft (c2) formed on both sides of the cam shaft (c) can be rotated. .

Figure 6 is a schematic diagram showing the mounting position of the drive shaft, the cam shaft and the operating housing according to the present invention, both sides of the operating housing (22, 32) constituting the high, low pressure portion (2, 3) of the drive shaft (1) Circular brackets 223 and 323 which are eccentric at the center are mounted, and a bearing (b; FIG. 1) supporting the outer diameter surfaces of the circular brackets 223 and 323 is mounted inside the casing 33. The distance L1 between the centers of the circular brackets 223 and 323 formed on both sides of the operating housings 22 and 32 and the center of the drive shaft 1 is the center of the eccentric shaft c1 constituting the cam shaft c. And the distance L2 between the center of the rotation shaft c2.

Hereinafter will be described the operating relationship of the present invention configured as described above.

As shown in Figures 1 to 3 and 6, first, the operation relationship of the high-pressure unit (2) is as follows.

First, the drive shaft 1 penetrating the center of the high-pressure unit 2 is rotated to rotate the rotating member 21 and the cam shaft c mounted thereon, and mounted outside the rotating member 21. By rotating the working housing 22 is eccentrically about the casing 23, a plurality of swing scrolls formed in the working housing 22 around the plurality of fixed scroll 211 formed on the rotating member 21 221 is shaken. Accordingly, fluid flows from the fluid suction hole 11 of the drive shaft 1 toward the center of the scrolls, and then the fluid is compressed and expanded to be ejected to the outside of the working housing 22 and then the casing 23. Will be discharged to the outside.

In more detail, at the start of rotation of the drive shaft 1, the position of the cam shaft c mounted around the rotating member 21 is also changed by rotating the rotating member 21, and at the same time, the cam shaft ( The contact portion of the rocking scroll 221 formed on the working housing 22 connected through c) and the fixed scroll 211 formed around the rotating member 21 is continuously changed. That is, as described above, the contact portions of the rocking scroll 221 and the fixed scroll 211 are continuously different from each other, but the contact position is always located on the vertical center line, thereby enabling stable operation of the pump.

Therefore, as described above, the working housing 22 repeats the eccentricity according to the rotation of the rotating member 21, so that the fixed scroll 211 and the oscillating scroll 221 mutually operate to compress and expand the fluid. will be. In addition, as the fluid flows through the fluid suction hole 11 formed in the driving shaft 1 and branches to the respective scrolls, the suction force can be maximized to obtain a high output, and the swinging operation of the respective scrolls is performed. In addition, by operating the operating housing 23 and the rotating member at the same time it is possible to minimize the vibration generated during operation.

On the contrary, as shown in FIGS. 1 to 3 and 6, the operation relationship of the low pressure part 3 will be described.

First, the rotary member 31 is rotated through the drive shaft 1 penetrating the center of the low pressure part 3 to rotate the cam shaft c mounted thereon, thereby being mounted on the outside of the rotary member 31. The working housing 32 is rotated eccentrically about the casing 33. That is, the plurality of rocking scrolls 321 formed on the inner side of the working housing 32 are pivoted about a single fixed scroll 311 formed on the rotating member 31, and are supplied through the connection line 4. The fluid is sucked into the center of the scroll and then compressed and expanded to pass through the outside of the working housing 32 to be discharged to the outside of the casing 33.

In more detail, at the start of rotation of the drive shaft 1, the rotation member 31 is rotated so that the position of the cam shaft c mounted around it is also changed, thereby being connected through the cam shaft c. The contact portion of the rocking scroll 321 formed in the working housing 32 and the fixed scroll 311 formed around the rotating member 31 is continuously changed. That is, as described above, the contact portions of the rocking scroll 321 and the fixed scroll 311 are continuously different from each other, but the contact position is always located on the vertical center line to perform a stable operation of the pump.

Therefore, as described above, the operation housing 32 repeats the eccentricity in accordance with the rotation of the rotating member 31, so that the single fixed scroll 311 and the swinging scroll 321 interact with each other to compress the fluid. To expand. In addition, the oscillating operation of the scroll unit and the operating housing 32 and the rotating member 31 are simultaneously rotated to minimize vibrations generated during the operation, as well as to compress and expand the fluid in the scroll unit to discharge the fluid. By properly adjusting the flow rate and pressure, it is possible to secure the stability of the discharge fluid.

The present invention as described above, by providing a scroll fluid machine that can increase the suction efficiency and obtain a stable discharge of the fluid, it is possible to provide a scroll fluid machine that can vary the suction pressure and discharge pressure of the fluid There is.

And by preventing the generation of vibration during the operation of the high-pressure portion, there is an effect that can enable a stable operation.

In addition, by preventing the occurrence of vibration even during the operation of the low pressure portion, there is an effect that can enable a stable operation.

Claims (8)

A drive shaft 1 having a fluid suction hole 11 formed therein; Fluid is introduced through the fluid suction hole (11), and rotates in coordination with the drive shaft (1) and the rotation member 21 is provided with three or more fixed scroll (211) and a plurality of cam shaft (c) around the center and The working housing 22 is provided with a plurality of swinging scrolls 221 connected to the cam shafts c and eccentrically rotated outside the rotating member 21 and assembled to the fixed scrolls 211. A high pressure part 2 made of a casing 23 for supporting both sides of the housing 22 eccentrically; The rotating member 31 is interlocked with the drive shaft (1) and provided with a single fixed scroll (311) and a plurality of cam shafts (c) on the periphery, and connected to the cam shafts (311) of the rotating member (31) It consists of an operating housing 32 having an oscillating scroll 321 eccentrically rotated and assembled with the single fixed scroll 311, and a casing 33 for supporting both sides of the operating housing 32 eccentrically. Low pressure section 3; And Characterized in that it consists of a connection line (4) connecting the discharge hole (231) formed in the casing (23) of the high pressure portion (2) and the inlet hole (331) formed in the casing (33) of the low pressure portion (3) Scroll fluid machine with low pressure. The eccentric shaft (c1) according to claim 1, wherein a plurality of cam mounting holes (212, 312) are formed around the rotating member (21) constituting the high and low pressure portions (2, 3). ) Is rotatably inserted, and the shaft mounting hole 322 is formed around the side wall of the operation housing 32 so that the rotation shafts c2 formed on both sides of the cam shaft c are rotatably inserted. Scroll fluid machine with low pressure. According to claim 1, On both sides of the operating housing (22, 32) constituting the high, low pressure portion (2, 3) is mounted circular brackets (223, 323) eccentric from the center of the drive shaft (1), The inside of the casing (33) is a scroll fluid machine equipped with a high, low pressure portion, characterized in that the bearing (b) for supporting the outer surface of the circular bracket (223,323) is mounted. 4. The cam shaft according to any one of claims 1 to 3, wherein the distance L1 between the center of the circular brackets 223 and 323 formed on both sides of the working housings 22 and 32 and the center of the drive shaft 1 is determined by the cam shaft. and (c) the same distance (L2) between the center of the eccentric shaft (c1) and the center of the rotating shaft (c2). The fixed scroll (211) of claim 1, wherein a plurality of fixed scrolls (211) formed on the high pressure portion (2) are formed on both sides of the rotating member (21), and the fixed scroll (211) on both sides of the inner side of the working housing (22). A plurality of oscillating scrolls 221 are assembled to a plurality), and a single fixed scroll 311 formed in the low pressure portion 3 is formed on both sides of the rotating member 31 and the operation housing 32. A scroll fluid machine equipped with a high and low pressure part, characterized in that a single rocking scroll 321 is formed to be dually assembled with the single fixed scroll 311 on both sides of the inside. The fixed member 211 of claim 1 or 5, wherein the rotating member 21 of the high pressure part 2 communicates with the fluid suction hole 11 mounted on the drive shaft 1 and sucks the fluid. And a branching hole (211a) for supplying to the outside, and a fluid discharge hole (221a) is formed outside the swinging scrolls (221) of the working housing (22). According to claim 1 or 5, The inlet hole 331 formed in the casing 33 of the low pressure portion 3 is formed in the central portion to supply the fluid to the central portion of the single fixed scroll (311), A fluid passage hole 31a is additionally formed in the center portion of the rotating member 31 so as to send the introduced fluid to the opposite side, and at least one fluid discharge hole 32a is formed at the periphery of the side wall of the operation housing 32. A scroll fluid machine equipped with high and low pressure parts. 2. The circular holes 23a and 33a are formed at both ends of the casings 23 and 33 constituting the high and low pressure parts 2 and 3, respectively. And between the circular holes 23a and 33a and the drive shaft 1, bearings b for fixing the casings 23 and 33 to the drive shaft 1 are mounted. machine.