KR100480956B1 - a scroll fluid pump - Google Patents

Abstract

The present invention relates to a scroll fluid pump.

In particular, an Oldham case in which the eccentric camshaft is provided with a bearing, a ring-shaped Oldham coupling installed up and down, left and right inwardly of the Oldham case, and an orbital rotation constrained by the Oldham coupling The scroll, the swinging scroll is made up of a configuration comprising a fixed scroll configured to enclose the fluid and compressive compression, and a flange plate laminated to the fixed scroll.

Accordingly, the high-viscosity fluid is hermetically compressed to be transported to provide a high-capacity scroll fluid pump having a medium capacity at medium pressure and low noise and vibration.

Description

Scroll fluid pump

 The present invention, the swing scroll is connected to the end of the rotating eccentric camshaft, the old scroll is installed via the Oldham coupling is installed so that the swing scroll is rotated in accordance with the up and down, left and right flow, and the swing scroll from the inside Consisting of a fixed scroll and a flange plate laminated to the fixed scroll, the fluid is compressed and transported by hermetically compressing and conveying high-viscosity fluids by turning the fluid to hermetic compression. Provide scroll fluid pump.

In general, a pump is a machine that delivers and transports a liquid or gas fluid through a pipe to a high place through a pressure action, or pumps a fluid in a low pressure container into a high pressure container through a pipe. A reciprocating pump that transports liquid by a reciprocating motion such as a bucket, a rotary pump that carries liquid by a rotational motion, a centrifugal pump that pumps water using a centrifugal force by rotating the water on a highway, and a propeller type impeller rotates There are various types of pumps, such as an axial flow pump sent in a direction, and a friction pump that pumps by a rotating body with a groove grooved in a radial direction on the outer circumference of the disc.

Among them, a commonly used pump is a centrifugal pump.

A centrifugal pump is a pump with a spiral passage on the outside of a rotating impeller, where water entering the center passes through a rotating impeller, increases in pressure, flows outwards, and passes through a spiral passage to the pump outlet. To reach. There are two types of centrifugal pumps: a turbine pump where water from the impeller passes between the guide vanes and into the casing, and a volute pump without guide vanes. Multistage expression leading to the entrance of the second stage is used.

However, the centrifugal pump should be designed in a multistage structure in the case of a general centrifugal pump to increase the water pressure to 10 kg / cm 2 or more, and a pump having a pressure of about 40 kg / cm 2 usually has a complex multistage structure of 10 or more steps. In addition, when using a piston pump can raise the pressure up to 100 ~ 1000kg / ㎠ but should be formed in a complex structure required for the reciprocating motion of the piston.

Therefore, in order to have a pressure of 50kg / ㎠ as a centrifugal pump, it has to have a complicated structure of 8 to 12 stages and has a problem of rotating at a high speed. The piston pump can also increase the flow rate, but the sealing and movement due to the reciprocating motion of the piston There is a problem that the structure is very complicated due to the change of direction.

An object of the present invention for improving the above problems is configured to have a range of use of medium capacity at medium pressure to widen the selection range of the consumer, to enable the transfer of a fluid having a high viscosity impossible with a centrifugal pump at high pressure, It is to provide a scroll fluid pump to prevent the inflow of air into the fixed scroll to increase the efficiency.

In order to achieve the above object, the present invention provides a pair of first guides connected to each other with a motor installed to impart rotational force to the eccentric camshaft and a bearing coupled to the camshaft inward and symmetrical with respect to the rotational center. An oldham case in which a groove is formed and a second guide piece which is formed in one surface and protrudes in a direction perpendicular to the first guide piece are formed on one surface of the first guide piece which is inserted into the first guide groove to protrude upward and downward. A ring-shaped Oldham coupling, a second guide groove which is formed so that the second guide piece is introduced into the left and right flows is formed on one surface, and a scroll scroll having a scroll portion protruding spirally to the other surface is formed; At the end of the scroll groove is formed a scroll groove of the crescent-shaped space corresponding to the scroll portion to rotate in And a fixed scroll having an inlet and outlet formed therein and a sealing means for blocking the inflow of air to the outer circumference of the scroll groove, and a flange plate laminated to correspond to the inlet and the outlet of the fixed scroll. Consists of the configuration.

In addition, the sealing means according to the present invention, the first sealing passage and the second sealing passage is formed with a sealing member therebetween to prevent the inflow of air to the outer periphery of the scroll groove, the first and second sealing passage Is characterized in that a plurality of return holes are formed in the flow path through which the fluid is moved.

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

The present invention, as shown in Figure 1 or 2, the rotating scroll 40 is rotated by the camshaft 11 largely connected to the motor 10, and the rotating scroll 40 is to be converted to the idle motion Old scroll coupling 30, which serves as a guide, and the fixed scroll 50 to form two scrolls overlapping the spiral grooves to the same depth so as to compress the fluid while the orbiting scroll 40 is rotated from the inside; It consists of a large flange plate 60 laminated on the fixed scroll (50).

The camshaft 11 has a multi-stage step and is interposed with a bearing 21 to support the camshaft 11, and is connected to a motor 10 that generates power of a rotational motion at one end to impart rotational force. On the other end, the end thereof is configured to be eccentric so as to be introduced into and contact with the cam shaft connector 43 of the turning scroll 40.

In addition, the camshaft 11 is provided with a balancing weight (Balancing Weight) (80) for the balance according to the swinging movement, the sealing member is mounted so that the high pressure of the scroll portion 41 is kept airtight in the swinging portion do.

As shown in FIG. 3A or 3B, the pivoting scroll 40 which is in contact with the eccentric end of the camshaft 11 and is subjected to rotational force may rotate while the eccentric end of the camshaft 11 is in contact. The camshaft connector 43 is formed to protrude while being recessed inwardly, and a pair of second guide grooves 42 are formed to be symmetrically formed around the camshaft connector 43 at the outer circumference thereof. Scroll portion 41 is rotated from the center to the outer periphery in a spiral shape is formed to protrude a certain height.

As shown in Figures 4a to 4d, Figure 4a shows an incompressible fluid flows into the fixed scroll 50, the rotating scroll 40 is located at 0 ° state, Figure 4b is the rotating scroll (40) ) Is moved to 90 ° according to the guide of the Oldham coupling 30, Figure 4c and Figure 4d shows the orbiting scroll 40 is moved to 180 °, 270 ° respectively. Accordingly, the incompressible fluid introduced from the turning scroll 40 at 0 ° is discharged through the discharge port 53 while moving to 270 °.

Here, the scroll unit 41 is preferably configured to have a shape that is rotated 360 degrees rotated relative to the rotation center, and when the shape is complicated by a plurality of rotations, the scroll unit 41 is Care should be taken as it can cause cracks and breakages due to excessive force on the aircraft during turning.

As shown in FIG. 5, the Oldham case 20 is connected with a bearing 21 coupled to the cam shaft 11 inwardly, and has a first guide groove symmetric with respect to the center of rotation. 22) is formed to correspond to the first guide piece 31 of the Oldham coupling (30).

As shown in FIG. 6, the Oldham coupling 30 has a ring shape installed between the pivoting scroll 40 and the Oldham case 20 via a sealing member 70, and the motor ( 10 is rotated by the rotation of the cam shaft 11 connected to the rotating scroll 40 is introduced into the second guide groove 42 of the turning scroll 40 so as to be converted to the orbital movement to the left and right directions A pair of second guide pieces 32 which can be repeatedly moved to each other are formed to correspond to the second guide grooves 42.

In addition, the other side of the second guide piece 32 is installed, the first guide groove 22 is rotated by 90 degrees with respect to the axis rotated in the second guide groove 42, the first guide groove 22 is the Oldham case ( 20 is protruded to correspond to the first guide groove (22).

That is, the Oldham coupling 30 positioned between the Oldham case 20 and the swing scroll 40 has the first and second guide pieces 31 and 32 having the first and second guide grooves 22. By moving along the 42), the rotational movement of the turning scroll 40 is changed into a linear movement.

On the other hand, as shown in Figure 7a or 7b, the fixed scroll 50, the scroll portion of the spiral scroll groove having a predetermined space that can be rotated idle by the scroll portion 41 of the turning scroll 40 inwardly 51 is formed.

Here, the scroll groove 51 formed on the inside of the fixed scroll 50, it is preferable to form a crescent-shaped space inside the scroll by positioning the direction of the scroll having a nested involute curve reversely Do.

In addition, the scroll groove 51, the suction port 52 and the discharge port 53 which can be discharged after the incompressible fluid flows between the scroll portion 41 and the scroll groove 51 of the scroll groove 51 It is formed at the outer end and the center end of the scroll groove 51, respectively. In addition, the outer peripheral edge of the scroll groove 51 is formed with a sealing means 54 is configured to block the inflow of air to obtain a high compression ratio.

The sealing means 54, the fluid is compressed into the gap by the rotational movement of the rotating scroll 40 and the fixed scroll 50, or the outside air is introduced to prevent the fluid leakage or pressure drop A first sealing passage 54a and a second sealing passage 54b are formed on the outer circumference of the scroll groove 51 to prevent the inflow of air, and between the first and second sealing passages 54a and 54b. And a sealing member 70 for sealing the space at the outermost part is installed.

Here, the first and second sealed passages 54a and 54b are formed with flow paths 54c having steps so that the fluid pushed out can be stored, and the flow paths 54c are formed in the flow paths 54c. A plurality of return holes (54d) for the fluid flowing through the back to the suction port 52 is formed.

Subsequently, the sealing member 70 provided between the first and second sealing passages 54a and 54b and outwardly has four round protrusions, and a quad ring 70 'having a magnetic sealing force is used. . Particularly, in the case of exercise, it is used when the O-ring is not suitable to be used. Compared with the O-ring, the friction coefficient is low, and the crimping rate is low, so the wear is low. Therefore, since the service life is improved and manufactured by the injection method, the portion generated in the product does not come into close contact with the contact surface in the groove, thereby having an excellent sealing force. Here, the quad ring 70 'is preferably configured to have a quadrangular shape so that the load distribution of pressure is evenly formed to serve as a sealing role.

In addition, the quad ring 70 'has a higher sealing force than the O-ring, has no kink in rotational and reciprocating motion, has a low coefficient of friction due to a low crimping rate, a low wear rate, and a long service life. In addition, it has a good sealing force according to the thickness, the efficiency is excellent, and has the advantage of having excellent sealing force in different media such as liquid and gas.

On the other hand, the flange plate 60 which is laminated to the outside of the fixed scroll (50), the suction port 52 and the discharge port formed in the fixed scroll (50) to supply and discharge fluid to the fixed scroll (50) The inlet 52 'and the outlet 53' are formed to correspond to 53. As shown in FIG.

Referring to the operation of the present invention made of such a configuration as follows.

First, when the cam shaft 11 is rotated by the motor 10, the balancing weight 80 is maintained by the balance movement, and then restrained by a constant flow by the Oldham coupling 30 The swinging scroll 40 is pivoted along the scroll groove 51 of the fixed scroll 50 between the Oldham case 20 and the fixed scroll 50.

At this time, the incompressible fluid is introduced into the fixed scroll 50 through the suction port 52 formed at the outer end of the scroll groove 51, and moved to the inner center by the pivoting movement of the scroll portion 41 to scroll. It discharges through the discharge port 53 formed in the center of the groove 51.

That is, the incompressible fluid introduced into the scroll from the suction port 52 positioned outside the fixed scroll 50 is closed along with the turning scroll 40 to close the outer space and sealed, and at the same time, the fixed scroll 50 is closed. It moves toward the center and is eventually discharged to the discharge port 53 located in the center.

At this time, it is preferable that the orbiting scroll 40 slides in the radial direction by the centrifugal force to maintain contact between the fixed scroll 50 and the lap. If the sealing force between the laps is too large, the friction loss is increased, and if it is too small, the orbiting scroll ( It is necessary to keep the sealing force between the laps appropriately because it takes longer to return to the original state after the retreat.

The incompressible fluid discharged through such a process, unlike air or gas, continuously shrinks the crescent-shaped space between the scrolls, which makes it impossible to reduce the space so that the outlet 53 is opened immediately after the inlet 52 is blocked. The compression process reduces the space by the orbital movement of the interlocking scroll of the same shape.

In this process, the incompressible fluid leaked to the outside of the scroll unit 41, the incompressible fluid is leaked to the outside by the sealing means 54 formed on the outside of the fixed scroll 50 or the outside air is sucked into the inside The sealing means 54 is a return hole 54d primarily formed inside the flow passage 54c by the first sealing passage 54a where the flow passage 54c is formed. The fluid passing through the first sealing passage 54a and passing through the outer sealing member 70 through the return hole 54d of the second sealing passage 54b. The fluid is moved to the suction port 52, and the fluid exiting the second sealing passage 54b is leaked to the outside through a multi-step sealing process that is completely sealed by the sealing member 70 installed at the outermost portion, Prevent air from being sucked inwards.

The present invention is composed of such a configuration, the efficiency can be increased, there is no need for a separate valve can be discharged continuously has the advantage of reducing noise and vibration.

EXAMPLE

On the other hand, the results of the discharge flow rate according to the test pressure is shown in Table 1.

TABLE 1

Pressure (kg / ㎠) Discharge Flow Rate (l / min) Commissioning 1 30 80 Commissioning 2 40 55 Commissioning 3 50 30

As shown in Table 1, it can be seen that it has a range of use of medium capacity at medium pressure, thereby widening the choice range of the consumer.

Thus, the present invention, unlike a special pump, such as a centrifugal pump using a winshim force by a general impeller rotational movement or a piston pump for continuously pushing a predetermined space by the reciprocating motion of the piston, two scrolls having the same shape are overlapped One of the rotating scrolls is a structure that pushes a certain space continuously while turning, and the fixed spiral scrolls and the rotating scrolls are assembled while the rotating scrolls are assembled. According to the movement, the space area is reduced while maintaining the minimum clearance with the fixed scroll, and the fluid can be continuously discharged.

In addition, the present invention can be used in liquids such as viscous fats and oils, heavy oils, foodstuffs, and coating materials, which have a volumetric form.

While the invention has been shown and described with respect to particular embodiments, it will be appreciated that the invention can be variously modified and varied without departing from the spirit or scope of the invention as provided by the following claims. It will be clear to those skilled in the art that it is very easy to know.

As described above, according to the present invention, the efficiency is increased by blocking the inflow of air into the fixed scroll, and the use range of the medium capacity is increased at medium pressure, thereby widening the selection range of the consumer, and enabling continuous discharge without a valve. Noise and vibration are less effective.

In addition, high-viscosity fluids can be transported at high pressure, so they can be used for various purposes, which can create a lot of demand for industrial use. The effect is visible.

1 is a cross-sectional view showing a scroll fluid pump according to the present invention.

Figure 2 is a perspective view showing a scroll fluid pump according to the present invention.

3A and 3B are a plan view and a cross-sectional view showing a turning scroll of a scroll fluid pump according to the present invention.

Figure 4a, b, c, d is a scroll operation state diagram of the scroll fluid pump according to the present invention.

Figure 5 is a perspective view of the oldham case of the scroll fluid pump according to the present invention.

Figure 6 is a perspective view of the oldham coupling of the scroll fluid pump according to the present invention.

Figure 7a, b is a plan view and a partial cross-sectional view showing a fixed scroll of the scroll fluid pump according to the present invention.

<Code Description of Main Parts of Drawing>

10 ... motor 11 ... camshaft

20 ... Oldham Case 21 ... Bearings

30 ... Oldham coupling 40 ... Slewing scroll

50 ... fixed scroll 60 ... flange plate

70 ... sealing member

Claims (2)

In a scroll structure in which the turning scroll and the fixed scroll are engaged with each other to form a lap that rotates continuously. Camshaft connector 43 is connected to the center by the contact so as to receive a rotational force from the cam shaft 11, the one end is eccentric, the second guide groove 42 so as to be symmetrical about the camshaft connector 43 ) Is formed, the rotating scroll 40 is formed with a scroll portion 41 protruding in a shape that rotates radially from the center to the other surface, The second guide piece 32 protrudes from one surface corresponding to the second guide groove 42 so as to be introduced into the second guide groove 42 and to flow up and down, and the second guide piece 32 to the other surface. And the ring-shaped Oldham coupling 30 in which the first guide piece 31 protrudes at a position rotated by 90 °, The first guide groove 22 is recessed in one surface corresponding to the first guide piece 31 so that the first guide piece 31 flows in from side to side, and the cam shaft 11 is rotated toward the center. Hollow Oldham case 20 is provided with a bearing 21 for supporting the, A scroll groove 51 in which a rotation space is formed inward so that the scroll portion 41 converted to the orbital movement by the Oldham coupling 30 is formed to correspond to the scroll portion 41, and the scroll groove The inlet 52 is formed at the outer end of the 51, the outlet 53 is formed in the center of the scroll groove 51, the outer periphery is fixed with a sealing means 54 to block the inflow of air Scroll 50, It consists of a configuration including a flange plate 60 that is laminated and coupled to correspond to the inlet port 52 and the outlet port 53 of the fixed scroll 50, the inlet port 52 and the outlet port 53 is not closed at the same time Scroll hydraulic pump characterized by. According to claim 1, The sealing means 54, the first sealing passage (54a) and the second sealing passage (54b) is a sealing member 70 to prevent the inflow of air to the outer periphery of the scroll groove (51) And a plurality of return holes (54d) are formed in the flow path (54c) through which the fluid is moved in the first and second sealing passages (54a, 54b).