KR20020078790A - Apparatus for reducing friction of compressor - Google Patents

Abstract

PURPOSE: A device for reducing friction of compressor is provided to improve efficiency and reliability of the compressor by reducing frictional loss and abrasion between a vane and a partition. CONSTITUTION: A device includes a cylinder(2) having inlets(2a,2b) and outlets(3a,3b) and forming an inner space; a partition(5) joined to a rotor to rotate in the inner space of the cylinder and varying volume of the inner space; vanes(10A,10B) joined to the cylinder to linearly move so as to divide the inner space into an intake area and a compression area together with the partition; and rolling members(20A,20B) inserted into the vanes, respectively and rotating to contact with the partition.

Description

Friction Reduction Device of Compressor {APPARATUS FOR REDUCING FRICTION OF COMPRESSOR}

The present invention relates to a friction reducing device of the compressor, and more particularly to a friction reducing device of the compressor that can reduce the friction between the vanes and the partition plate in contact with the vane compressor.

In general, a compressor converts mechanical energy into a compressive energy of a compressive fluid, and is generally classified into a reciprocating compressor, a scroll compressor, a centrifugal compressor (also called a turbo compressor), and a vane compressor (also called a rotary compressor). have.

Among them, the vane compressor installs a movable vane in contact with the rotating body so that the inner space of the cylinder is divided into a suction area and a compression area, and the suction area and the compression area are driven continuously according to the phase difference of the rotating body when the rotating body is driven. By swapping with each other, the fluid is sucked and compressed to be discharged.

1 is a longitudinal sectional view showing an example of a conventional vane compressor.

As shown in the drawing, a conventional vane compressor is connected to a motor mechanism comprising a stator (Ms) and a rotor (Mr) and a rotor (Mr) so as to generate power in the upper portion of the sealed container (1). It consists of a compression mechanism part for suction compression and discharge.

The compression mechanism is provided with a cylinder (2) fixed to the lower half of the sealed container (1), a first bearing plate (3A) for fixing to the upper and lower surfaces of the cylinder (2) together to form an inner space of the cylinder (2), and 2 a rotating shaft 4 that couples to the bearing plate 3B and the rotor Mr of the power mechanism portion, and penetrates to each bearing plate 3A, 3B to transmit the power of the power mechanism portion to the compression mechanism portion; On both sides of the partitioning plate 5 and the partitioning plate 5 which couple | bonds with or integrally shape | molds and partitions the internal space of the cylinder 2 into the 1st space S1 and the 2nd space S2, And a first vane 6A and a second vane 6B which respectively contact the lower and upper ends to partition the respective spaces S1 and S2 into a suction zone and a compression zone during rotation of the rotary shaft 4. .

The partition plate 5 is formed in a disk shape in planar projection so that the outer circumferential surface is in sliding contact with the inner circumferential surface of the cylinder 2, and both sides are formed in a sinusoidal cam face having the same thickness from the inner circumferential surface to the outer circumferential surface when the side surface is deployed.

As shown in FIG. 2, the first vane 6A and the second vane 6B are formed in a rectangular parallelepiped and penetrate the respective bearing plates 3A and 3B to the upper and lower cam surfaces of the partition plate 5 as described above. Each of the vanes 6A, 6B contacts or is inserted into the inner circumferential surface of the cylinder 2 while the inner surface of the vanes 6A, 6B is in contact with each other and axially reciprocates when the rotating shaft 4 is rotated. It is coupled to make sliding contact with the outer circumferential surface.

In the figure, 2a and 2b are the inlets of each space, 3a and 3b are the discharge ports, 7A and 7B are the discharge mufflers, 7a and 7b are the discharge holes, 8A and 8B are the discharge valves, DP is the discharge pipe, and SP is the suction pipe. to be.

The conventional vane compressor as described above operates as follows.

That is, when the rotor (Mr) is rotated by applying power to the electric mechanism, the rotary shaft 4 coupled to the rotor (Mr) rotates in one direction together with the partition plate (5), The vanes 6A and 6B in contact with the upper and lower sides respectively reciprocate in the opposite directions up and down along the height of the partition plate 5, and thus the volumes of the first space S1 and the second space S2 vary. Together with each of the inlets 2a and 2b of the first space S1 and the second space S2, new fluid is simultaneously sucked in and gradually compressed before the top dead center or the bottom dead center of the partition plate 5 at the start of discharge. At the moment of arrival, the compressed fluid discharged simultaneously through the discharge ports 3a and 3b of the respective spaces S1 and S2.

However, in the conventional vane-type compressor as described above, the vanes 6A and 6B and the partition plate 5 are formed as the vanes 6A and 6B moving in a straight line contact both sides of the partition plate 5 which rotates. There was a fear that the friction between the contact surface between the deterioration of the efficiency of the compressor or the reliability of the compressor as the compressed gas leaks due to the wear of the friction surface during long-term use.

The present invention has been made in view of the problems of the conventional vane compressor as described above, to provide a friction reducing device of the compressor that can improve the efficiency and reliability of the compressor by reducing the friction loss and wear between the vane and partition plate. There is a purpose.

1 is a longitudinal sectional view showing an example of a conventional vane compressor.

Figure 2 is a perspective view showing an example of the vanes in the conventional vane compressor.

Figure 3 is a longitudinal sectional view showing a compression mechanism of the vane compressor of the present invention.

4 and 5 are a perspective view and an exploded perspective view showing an example of the vane in the vane compressor of the present invention.

6 and 7 are a perspective view and an exploded perspective view showing a modification of the vane in the vane compressor of the present invention.

** Description of symbols for the main parts of the drawing **

5: partition plate 10A, 10B: first and second vanes

10a, 10b: rolling member receiving groove 20A, 20B: rolling member

100A, 100B: first and second vanes 110a, 110b: support protrusion

120a, 120b: Rolling member accommodating groove 130a, 130b: Pin mounting hole

200a, 200B: Rolling member 210a, 210b: Pin through hole

300A, 300B: Pin member

In order to achieve the object of the present invention, a cylinder having an inlet and a discharge port to form an inner space, a rotating plate coupled to the rotor to rotate in the inner space of the cylinder to vary the volume of the inner space, and the rotating plate and Friction reduction device of the compressor, characterized in that it comprises a vane coupled to the cylinder to flow in a straight line to partition the inner space into a suction zone and a compression zone, and rolling members inserted into each vane to rotate in contact with the rotating plate To provide.

EMBODIMENT OF THE INVENTION Hereinafter, the friction reduction apparatus of the compressor which concerns on this invention is demonstrated in detail based on one Example shown in an accompanying drawing.

Figure 3 is a longitudinal sectional view showing a compression mechanism of the vane compressor of the present invention, Figures 4 and 5 are a perspective view and an exploded perspective view showing an example of the vane in the vane compressor of the present invention.

As shown in the drawing, the vane-type compressor including the friction reducing device according to the present invention includes a sealed container 1 and a rotating shaft 4 coupled to a rotor Mr of a power mechanism provided in the sealed container 1. ) And a partition plate 5 which is coupled to the rotating shaft 4 to partition the internal space of the cylinder 2 of the compression mechanism part into the first space S1 and the second space S2, and the partition plate 5. The first vane 10A and the second vane 10B inserted into the cylinder 2 so as to be in direct contact with each other, and the rolling members 20A and 20B rotatably inserted into the contact ends of the vanes 10A and 10B. It consists of.

The cylinder 2 is formed in an annular shape and is equipped with first and second bearing plates 3A, 3B, which form an inner space together with the cylinder 2 on both upper and lower sides, of which the first space S1. ) And inlet ports 2a and 2b to communicate with the second space S2, respectively, while each of the bearing plates 3A and 3B has discharge ports 3a and 3b provided with discharge valves 8A and 8B, respectively. It is formed to communicate with the spaces S1 and S2.

The partition plate 5 is formed in a disk shape when projecting a plane such that the outer circumferential surface is in sliding contact with the inner circumferential surface of the cylinder 2, and both upper and lower sides are formed by a sinusoidal cam surface having the same thickness from the inner circumferential surface to the outer circumferential surface when the side surface is deployed.

The first vane 10A and the second vane 10B penetrate the respective bearing plates 3A and 3B as shown in Figs. 4 and 5, respectively, to the upper and lower cam surfaces of the partition plate 5 as described above. It is formed into a rectangular parallelepiped to contact, and among the contact end which contacts the cam surface of the partition plate 5, the rolling member accommodation grooves 10a and 10b are formed in circular arc shape, and the rolling members 20A and 20B of circular cross section are inserted. do.

Here, the rolling member receiving grooves (10a, 10b) is formed so that the center is located inside the contact ends of the vanes (20A, 20B) so that the rolling members (20A, 20B) on both ends of the gap (L) ) Is preferably formed smaller than the diameter D of the rolling members 20A and 20B.

In the drawings, the same reference numerals are given to the same parts as in the prior art.

In the drawings, reference numerals 7A and 7B denote discharge mufflers, 7a and 7b denote discharge holes, and SP denotes a suction pipe.

Effects of the friction reducing device of the compressor according to the present invention as described above are as follows.

That is, when power is applied to the electric drive unit, the vanes 10A and 10B are in contact with the upper and lower sides of the partition plate 5 while the partition plate 5 rotates together with the rotor Mr and the rotation shaft 4. Is reciprocated in the opposite direction up and down along the height of the partition plate 5, wherein the rolling members (20A, 20B) at the contact end of each vane (10A, 10B) in contact with the upper and lower sides of the partition plate (5) By rotating the rolling members 20A and 20B along the cam surface of the partition plate 5 when the partition plate 5 is rotated, the friction between the partition plate 5 and the vanes 10A and 10B can be greatly reduced.

In more detail, the partition plate 5 rotates about the rotary shaft 4 while the vanes 10A and 10B are mounted on the cam surface of the partition plate 5 to perform linear movement in the axial direction of the rotary shaft 4. Therefore, the direction of movement of the partition plate 5 and the vanes 10A and 10B forms an angle of 90 °, which may cause severe friction at the contact surface. However, as described above, the rolling member is disposed at the contact end of the vanes 10A and 10B. By adding 20A and 20B so as to correspond to the rotational direction of the partition plate 5, the friction between the partition plate 5 and the vanes 10A and 10B can be prevented in advance.

In addition, when the rolling members 20A and 20B are mounted, the rolling members 20A and 20B are pushed from the side to the rolling member accommodation grooves 10a and 10b provided in the vanes 10A and 10B. The number of parts required for mounting 20B) is small and the assembling work is easy, so that the productivity can be prevented from falling.

In addition, the rolling member mounting grooves 10a and 10b form the center inside the contact ends of the vanes 10A and 10B to prevent the rolling members 20A and 20B from being removed during operation, thereby preventing the partition plate 5 and the vanes ( The compressor can operate stably while reducing the friction of 10A and 10B).

The case where there exists a modification regarding the friction reduction apparatus of the compressor by this invention is as follows.

In the above-described example, the rolling member receiving groove is formed in an arc shape larger than a semicircle at the contact end of each vane to insert and mount the rolling member. However, the present modified example has vanes 100A and 100B as shown in FIGS. 6 and 7. The support protrusions 110a and 110b are formed on both sides of the side and the pin members 300A and 300B penetrate the pin through holes 210a and 210b of the rolling members 200A and 200B to the support protrusions 110a and 110b. The pin mounting holes 130a and 130b may be formed to mount the rolling members 200A and 200B to the support protrusions 110a and 110b as the pin members 300A and 300B.

In this case, it is preferable to form the rolling member accommodation grooves 120a and 120b in an arc shape smaller than a semicircle at the contact ends except the support protrusions 110a and 110b.

In addition, although not shown in the drawings, a fixing protrusion may be formed at both ends of the rolling member without a separate pin member to be fitted into the pin mounting hole of the support protrusion.

These modifications are similar to the above-described example, so the detailed description thereof will be omitted.

The friction reducing device of the compressor according to the present invention is equipped with a rolling member in rotational contact with the partition plate at the contact end of the vane, thereby reducing friction loss and wear by reducing friction between the partition plate and the vane when the compressor is operated. In addition, the compressor can operate stably even after long-term use.

Claims (5)

A cylinder having an inlet and an outlet to form an inner space, A rotating plate coupled to the rotor to rotate in the inner space of the cylinder and varying a volume of the inner space; Vanes coupled to the cylinder so as to flow in a straight line so as to partition the inner space together with the rotating plate into a suction zone and a compression zone; And a rolling member inserted into each vane to be in contact with the rotating plate to rotate. The friction reducing apparatus of claim 1, wherein a rolling member accommodation groove is formed at a contact end of the vane opposite to the rotating plate to insert and support the rolling member. 3. The apparatus of claim 2, wherein the rolling member receiving groove is formed in an arcuate cross section so that the center is located inside the contact end of the vane. The compressor according to claim 1, wherein rolling member support protrusions are formed at both sides of the contact end facing the rotating plate, and pin members penetrating the rolling member are fixed to the vane to fix the rolling member to the vanes. Friction reduction device. The friction reducing apparatus of claim 4, wherein a rolling member accommodation groove having an arcuate cross section is formed at a contact end of the vane.