KR20010105814A - Compressor - Google Patents

Abstract

The invention relates to a wiper system with at least one wiper bearing (10). A wiper shaft (18) is mounted and axially fixed in the housing (12, 126) of said bearing and supports a wiper arm (60) on the end (20) protruding from the car body (24). According to the invention, the wiper shaft (18) can be displaced on the car body (24) when an external axial force (40) exceeding a preset dimension is exerted on the end (20).

Description

Compressor {COMPRESSOR}

TECHNICAL FIELD The present invention relates to a compressor, and more particularly, to a compressor that not only has excellent compression performance but also improves stability of operation and reduces driving load.

Generally, a compressor is a machine that compresses a fluid. The configuration of such a compressor includes a sealed container having a predetermined internal space, an electric mechanism part mounted in the sealed container and generating a driving force, and a compressor mechanism part compressing gas by receiving a driving force of the electric mechanism part.

The compressors are generally classified into various types such as a rotary compressor, a rotary compressor, a scroll compressor, and the like according to a shape of a compression mechanism for compressing gas.

One type of the compressor has been filed by the applicant of the present application (Korean Patent No. 99-42381) with a compressor having a compression method different from that of conventional compressors. 1, 2, and 3 illustrate a compressor pre- filed by the applicant of the present application. As shown in the drawing, the pre-applied compressor generates a driving force in the hermetic container 3 in which the suction pipe 1 and the discharge pipe 2 are coupled. And a compressor mechanism for compressing the refrigerant gas by receiving the driving force of the power mechanism.

The electric motor part consists of a stator 4 coupled to the hermetic container 3 and a rotor 5 inserted into the stator 4.

The compressor 20 has an inner space and a rotating shaft 20 penetrating the center of the cylinder assembly 10 having the suction passage 11 and the discharge passage 12 communicating with the internal space V, respectively. The rotating shaft 20 is inserted and coupled to the electric motor unit M for generating a driving force. In addition, the partition plate 30 for dividing the internal space V of the cylinder assembly 10 into the first and second spaces 13 and 14 is integral to the rotation shaft 20 so as to be located in the internal space V of the cylinder assembly. The first and second spaces 13 and 14 are respectively formed in the suction area 13a and 14a as the partition plate 30 is rotated so as to be in elastic contact with both sides of the partition plate 30 at all times. ) And two vanes 40 and 41 that move while switching to the compression zones 13b and 14b are inserted into and coupled to the cylinder assembly 10, respectively. The partition plate 30 is formed in an annular shape when viewed in plan view, and has a convex curved portion r1 having a convex surface and a concave curved portion r2 having a concave surface and a convex curved portion r1 when viewed in a plan view. ) And a concave curved surface portion r3 connecting the concave curved surface portion r2, and the convex curved portion r1 and the concave curved surface portion r2 are formed to have a phase of 180 degrees with each other. The partition plate 30 is rotatable in the interior space V in a state in which a tip of each inflection point of the convex curved portion r1 and the concave curved portion r2 is in contact with the inner wall of the interior space V, respectively. To be located. The two vanes 40 and 41 are movably coupled to the cylinder assembly 10 such that they are 180 degrees out of phase with each other, ie on the same line.

And opening and closing means 50 for discharging the compressed gas in the compression zone (13b, 14b) of the first and second spaces (13) and (14) while opening and closing the discharge passage 12 of the cylinder assembly 10, respectively Coupled to the cylinder assembly 10.

The operation of such a compressor first receives the driving force of the electric mechanism (M) and when the rotary shaft 20 is rotated by the rotation of the rotary shaft 20 partition plate 30 of the rotary shaft 20 of the cylinder assembly 10 It rotates in the internal space (V). As the partition plate 30 rotates in the internal space V of the cylinder assembly 10, the first space 13 and the second space 14 are suction areas 13a, 14a, and compression area 13b. The refrigerant gas is sucked and compressed in the respective suction flow paths 11 of the first space 13 and the second space 14 while being switched to 14b, and discharged through the respective discharge flow paths 12.

When the process is described in more detail, as shown in FIG. 4, first, when the tip of the convex curved portion r1 of the partition plate is located at the position a1 of the vane 40 located on the first space side, The tip of the concave curved portion r2 of the partition plate is positioned at the position a1 ′ of the vane 41 located in the second space 14, wherein the first space 13 and the second space 14 are compressed. Discharge of the completed gas is completed and gas will be inhaled. Subsequently, the tip of the convex curved portion r1 of the partition plate is positioned at the position a2 past the suction flow path 11 of the first space 13 by the rotation of the rotary shaft 20, and at the same time, the tip of the concave curved portion r2. When the suction flow path 11 of the second space 14 is positioned at a position a2 ', the first and second spaces 13 and 14 are in a state where gas intake is completed. Subsequently, the tip of the convex curved portion r1 of the partition plate is positioned at the position a1 of the vane 40 positioned in the first space 13 through the discharge passage 12 by the rotation of the rotation shaft 20. When the tip of the concave curved portion r2 is positioned at the position a1 ′ of the vane 41 positioned in the second space 14 through the discharge passage 12, the first space 13 and the second space ( When each of the inhaled gas is compressed in the set pressure state 14, the opening and closing means 50 is opened and the compressed gas is discharged through the respective discharge passage 12 at the same time. At the same time, gas is sucked into the first space 13 and the second space 14. At this time, the vane 40 is linearly reciprocated in the axial direction by the curved portion of the partition plate 30 in accordance with the rotation of the partition plate 30 in an elastically supported state.

As described above, the compressor has a rotational balance consisting of a rotor 5 constituting the electric mechanism part and a rotation shaft 20 coupled to the rotor 5 to achieve rotational balance, and thus there is almost no vibration during rotation. There is a number of excellent advantages that can be stable and the internal volume (V) of the gas compression is small, high compression efficiency and small appearance. However, such a compressor has a disadvantage in that excessive pressure is applied to the partition plate 30 and the discharge pressure pulsation is large since the stroke is performed at the same time as the gas is sucked, compressed and discharged in the first space and the second space. have.

An object of the present invention devised in view of the above point is to provide a compressor that can increase the compression performance as well as increase the stability of the operation.

Another object of the present invention is to provide a compressor that can reduce the load of the electric drive unit that generates the driving force.

1,2 is a front sectional view and a plan view showing a conventionally filed compressor;

3 is a perspective view partially showing a compression mechanism of the compressor;

4 is a plan view illustrating a compression process of the compressor;

5, 6 is a front sectional view and a plan view showing a compressor of the present invention,

7 is a perspective view partially showing a compression mechanism of the compressor of the present invention;

8 is a plan view illustrating a compression process of the compressor;

9, 10, 11 and 12 are front views showing partial operation of the operation process for the compressor of the present invention, respectively.

(Explanation of symbols for the main parts of the drawing)

60; Airtight containers 61; suction

62; Discharge tube 71; Rotor

80; Cylinder assembly 81; First space

82; Second spaces 81a and 82a; Suction area

81b, 82b; Compression zone 92; Opening

93; First discharge hole 94; Second discharge hole

95; Suction hole 120; Axis of rotation

121; Oil channel 122; Oil feeder

130; Partition plate 140; First vane

141; Second vane 160; Switchgear

V; Cylinder Assembly Inner Space

An airtight container provided with a suction pipe and a discharge pipe through which a fluid is sucked and discharged in order to achieve the object of the present invention as described above; An electric mechanism part mounted in the sealed container to generate a driving force; A cylinder assembly forming an inner space and having a suction flow path and a discharge flow path respectively communicating with the internal space; A rotating shaft coupled to the rotor of the electric mechanism part and penetrating the center of the cylinder assembly; A partition plate coupled to the rotation shaft inside the cylinder assembly to partition an inner space of the cylinder assembly into first and second spaces; A first vane inserted through the cylinder assembly so as to be located in the first space and elastically supported so as to be in contact with the partition plate at all times, thereby converting the first space into a compression zone and a suction zone by rotation of the partition plate; It is positioned in the same axial line as the first vane and inserted into the cylinder assembly so as to be located in the second space and elastically supported so as to be in constant contact with the partition plate while sucking the second space by the rotation of the partition plate. And a second vane for switching to the area and opening and closing means for opening and closing the discharge passage of the cylinder assembly, respectively.

Hereinafter, the compressor of the present invention will be described according to the embodiment shown in the accompanying drawings.

5, 6, and 7 illustrate an embodiment of the compressor of the present invention. Referring to this, first, the sealed container 60 is formed to have a predetermined internal volume, and fluid is introduced into one side thereof. The suction tube 61 is coupled and the discharge tube 62 for discharging the fluid to the other side is coupled.

The electric machine part is composed of a stator 70 fixedly coupled to the hermetic container 60 and a rotor 71 rotatably coupled to the inside of the stator 70.

The cylinder assembly 80 is formed in a predetermined shape, the inner space (V) is formed therein and is provided with a suction passage and a discharge passage so as to communicate with the inner space (V).

The cylinder assembly 80 includes a cylinder 90 having a through hole 91 having a predetermined internal diameter therein, and a first bearing 100 coupled to one side of the cylinder 90, and the cylinder 90. It is configured to include a second bearing 110 is covered on the other side.

The inner space V is sealed by the through hole 91 of the cylinder 90 and the first and second bearings 100 and 110 covered by the cylinder 90. In addition, shaft insertion holes 101 and 111 through which the center shafts of the first and second bearings 100 and 110 are inserted are formed, respectively, and have a predetermined width and length on one side of the first bearing 100. A vane slot 102 is formed and a vane slot 112 is formed on one side of the second bearing 110 to be positioned at the same position as the vane slot 102 of the first bearing 100. That is, the vane slots 102 of the first bearing 100 and the vane slots 112 of the second bearing 110 are formed to be in the same axial line. The discharge passage has a first discharge hole 92 having a predetermined shape formed on an outer wall of the cylinder 90 constituting the cylinder assembly 80 and communicating with the internal space V on the bottom of the opening groove 92. A hole 93 is formed and a second discharge hole 94 is formed in the bottom surface of the opening groove 92 in communication with the internal space V so as to be located on the side of the first discharge hole 93. Preferably, the first and second discharge holes 93 and 94 are formed to be positioned on the same line in the axial direction. The suction flow passage includes a suction hole 95 formed through the side wall of the cylinder 90 so as to be located at the side of the first and second discharge holes 93 and 94.

The cylinder assembly 80 is preferably fixedly coupled to the hermetic container 60.

In another modification of the cylinder assembly 80, the cylinder 90 and the first bearing 100 are integrally formed, and the second bearing 110 is covered by the cylinder 90. In addition, in another modification of the cylinder assembly 80, the cylinder 90 and the second bearing 110 are integrally formed, and the first bearing 100 is covered with the cylinder 90. That is, the cylinder assembly 80 may be implemented in various forms.

The rotating shaft 120 is formed to have a predetermined length, and the rotating shaft 120 is press-fitted into the rotor 71 and inserted through the cylinder assembly 80. That is, the rotation shaft 120 is inserted into the shaft insertion holes 101 and 111 of the first and second bearings so as to penetrate the internal space V of the cylinder assembly 80 and the first and second bearings 100. Supported by 110. The oil passage 121 is formed inside the rotary shaft 120, and the oil feeder 122 sucks oil by the rotation of the rotary shaft 120 inside the oil passage 121.

The partition plate 130 is formed to have a sinusoidal curved surface having a predetermined thickness and an area corresponding to the internal space V of the cylinder assembly 80. That is, a convex curved portion r1 having a convex surface and a concave curved surface portion r2 having a concave surface, a convex curved portion r1 and a concave curved surface portion formed in a circular shape in a planar view and a convex surface in a side view ( The convex curved portion r1 and the concave curved portion r2 are formed to have a phase of 180 ° with each other. The partition plate 130 is located in the interior space V of the cylinder assembly 80 and partitions the interior space V into the first and second spaces 81 and 82, as well as the interior space V. It is formed integrally with the rotating shaft 120 inserted through or fixedly coupled to the rotating shaft 120. In the partition plate 130 positioned in the interior space V of the cylinder assembly 80, the tip of the convex curved portion r1 is linearly contacted with one side wall of the interior space V, and The tip is inserted to be in line contact with the other side wall of the interior space (V). When the rotary shaft 120 is radially cut at any position, the outer circumferential surface of the cut rotary shaft 120 and the surface of the partition plate 130 are always vertical.

The first vane 140 and the second vane 141 are formed in a rectangular plate shape to have a predetermined thickness and a predetermined area, and the first vane 140 is formed in the vane slot 102 of the first bearing 100. The second vane 141 is inserted through and inserted into the vane slot 112 of the second bearing 110. At this time, the first and second vanes 140 and 141 are positioned on the same axial line and are located between the suction hole 95 and the first and second discharge holes 93 and 94. The second vanes 140 and 141 may be positioned to overlap some regions of the first discharge hole 93 and the second discharge hole 94 formed on the sidewall of the cylinder 90. In addition, the first discharge hole 93 is not only positioned to communicate with the first space 81 of the internal space V partitioned by the partition plate 130, but the second discharge hole 94 is a partition plate. It is positioned to communicate with the second space 82 of the internal space V partitioned by the 130. The edge surfaces of the first and second vanes 140 and 141 inserted into the vane slots 102 and 112 of the first and second bearings are respectively defined by the inner circumferential wall of the cylinder through hole 91 and the partition plate 130. Surface and the outer circumferential surface of the rotation shaft 120 to compress the first space 81 and the second space 82 with the suction zones 81a and 82a, respectively, during the rotation of the partition plates 130 and 70. The areas 81b and 82b are switched. The vanes 140 and 141 are elastically supported by the elastic support means 150, and the elastic support means 150 is coupled to the cylinder assembly 80.

The opening and closing means 160 is composed of a discharge valve 161 for opening and closing the discharge passage and a valve retainer 162 for limiting the movement of the discharge valve 161, the discharge valve 161 and the valve retainer 162 is It is provided so as to open and close the first discharge hole 93 and the second discharge hole 94, respectively.

The oil supplied to the portion of the sealing container 41 is the sliding contact portion of the compression mechanism and the electric mechanism is filled with the oil is pumped by the oil feeder 122 in accordance with the rotation of the rotary shaft (120).

Hereinafter, the operational effects of the compressor of the present invention will be described.

First, when power is applied to the electric mechanism part and the rotor 71 rotates, the rotary shaft 120 press-fitted to the rotor 71 rotates. The partition plate 130 of the rotation shaft 120 rotates by the rotation of the rotation shaft 120, and the partition plate 130 rotates in the internal space V of the cylinder assembly 80. ) And the second space 82 are switched to the suction zones 81a, 82a and the compression zones 81b, 82b, respectively, and the refrigerant in the respective suction flow paths of the first space 81 and the second space 82. The gas is sucked and compressed and discharged through each discharge passage.

Referring to the process in which the refrigerant gas is sucked, compressed and discharged as the partition plate 130 rotates in more detail, as shown in FIGS. 8 and 9, first, the convex curved portion r1 of the partition plate 130 is described. When the tip is positioned at the vane position a3, the discharge of the compressed gas is completed in the first space 81 and the suction and compression of the gas are simultaneously performed in the second space 82. At this time, the first vane 140 reaches the highest position on the upper side (in the drawing), and the second vane 141 also reaches the highest position on the upper side (in the drawing). Subsequently, as shown in FIGS. 8 and 10, the tip of the convex curved portion r1 of the partition plate 130 is rotated by the rotation shaft 120, with the first and second vanes 140 and 141 as a starting point. When it reaches the position a4 of 45 °, the suction of the refrigerant gas is started in the first space 81 and the compression of the sucked gas proceeds. In the second space 82, the discharge of the compressed gas is completed. Inhalation of the gas is completed. At this time, the first and second vanes 140 and 141 are both lowered and positioned at an intermediate position of the internal space V. Subsequently, as shown in FIGS. 8 and 11, the front end of the convex curved portion r1 of the partition plate 130 is rotated by the rotation shaft 120, with the first and second vanes 140 and 141 as a starting point. When it reaches the position a5 of 180 °, the suction of the gas and the compression of the sucked gas proceed simultaneously in the first space 81, and the discharge of the compressed gas is completed in the second space 82. Inhalation of the gas is completed. At this time, the first and second vanes 140 and 141 are positioned at the lowest position on the lower side (in the drawing). Subsequently, as shown in FIGS. 8 and 12, the front end of the convex curved portion r1 of the partition plate 130 is rotated by the rotation shaft 120, with the first and second vanes 140 and 141 as a starting point. When it reaches the position a6 of 135 °, the discharge of the compressed refrigerant gas is completed and the suction of the gas is completed at the first space 81, and the suction of the gas is started in the second space 82. At the same time, the compression of the sucked gas proceeds. At this time, the first and second vanes 140 and 141 are both lowered and positioned at an intermediate position of the internal space V.

As the above process is repeated, the refrigerant gas is sucked into the first space 81 and the second space 82, compressed and discharged, and the processes that proceed in the first space 81 and the second space 82 do not occur at the same time. Instead, they happen at a 180 ° interval to each other. That is, the gas discharged from the first space 81 and the second space 82 occurs at a phase of 180 °. The discharged gas is discharged out of the sealed container through a discharge tube.

On the other hand, the oil filled in the bottom surface of the sealed container (3) by the oil feeder 122 coupled to the inside of the rotary shaft 120 in accordance with the rotation of the rotary shaft 120 is sucked through the oil flow path is supplied to the component is sliding. .

In the compressor of the present invention, as the rotating shaft 120 rotates once, the refrigerant gas in the high temperature and high pressure state compressed in the partitioned first space 81 and the second space 82 of the internal space V may have different phase differences. Since it is discharged while keeping, discharge gas is distributedly discharged, the pressure pulsation by discharge gas becomes small.

In addition, since the process of inhaling, compressing, and discharging the refrigerant gas in the first space 81 and the second space 82 proceeds with different phases, the load torque acting on the power transmission unit has a simultaneous phase. It will be halved than it is.

Compressor of the present invention is a rotating body composed of a rotor 71 constituting the electric mechanism portion and a rotating shaft 120 is coupled to the rotor 71 to rotate to achieve a rotational balance without rotation imbalance during rotation Stable operation is achieved. In addition, since the volume occupied by the component located in the inner space V of the cylinder assembly 80 is lower than that of the conventional rotary compressor, the compression performance is excellent.

In another embodiment of the present invention, the position of the first vane 140 and the second vane 141 coupled to the cylinder assembly 80 is 45 ° or 135 ° in the rotation direction of the rotation shaft 120. It can be configured to have a phase of.

As described above, in the compressor according to the present invention, as the rotating shaft rotates, the refrigerant gas of the high temperature and high pressure state compressed in each of the divided first space and the second space of the internal space are dispersed and discharged while having different phase differences, and are discharged to the discharge gas. As the pressure pulsation is reduced and the rotational balance of the rotating body is achieved, the noise is less generated by the pressure pulsation and the operation is made stable, thereby increasing the reliability.

In addition, the load torque of the drive mechanism generating the driving force is reduced, thereby increasing the efficiency of the motor forming the drive mechanism.

Claims (5)

An airtight container including a suction pipe and a discharge pipe through which the fluid is sucked and discharged; An electric mechanism part mounted in the sealed container to generate a driving force; A cylinder assembly forming an inner space and having a suction flow path and a discharge flow path respectively communicating with the internal space; A rotating shaft coupled to the rotor of the electric mechanism part and penetrating the center of the cylinder assembly; A partition plate coupled to the rotation shaft inside the cylinder assembly to partition an inner space of the cylinder assembly into first and second spaces; A first vane inserted through the cylinder assembly so as to be located in the first space and elastically supported so as to be in contact with the partition plate at all times, thereby converting the first space into a compression zone and a suction zone by rotation of the partition plate; It is positioned in the same axial line as the first vane and inserted into the cylinder assembly so as to be located in the second space and elastically supported so as to be in constant contact with the partition plate while sucking the second space by the rotation of the partition plate. And a second vane for switching to an area and opening and closing means for opening and closing the discharge passage of the cylinder assembly, respectively. According to claim 1, wherein the discharge flow path is formed in the sidewall of the cylinder assembly has a predetermined shape of the opening groove is formed in the bottom surface of the opening groove is formed in the first discharge hole communicating with the first space and on the side of the first discharge hole And a second discharge hole communicating with the second space on the bottom of the opening groove so as to be positioned. 3. The compressor as claimed in claim 2, wherein a part of the first discharge hole and the second discharge hole is formed to overlap the vane. The compressor of claim 1, wherein the suction flow passage is formed with one suction hole in the side wall of the cylinder assembly to alternately suck the gas into the first space and the second space as the partition plate rotates. According to claim 1, wherein the oil is filled in the bottom surface of the sealed container and the oil flow path is formed in the inside of the rotating shaft and the oil feeder is installed inside the oil passage to suck the oil by the rotation of the rotating shaft Compressor characterized.