JPWO2017002212A1 - Scroll compressor - Google Patents

Abstract

A fluid is disposed in front of the fluid inlet of the sealed container, has a movable part that is fixed at the top and rotates around the fixed part, and fluid in the sealed container according to the collision pressure of the fluid that has flowed into the sealed container A plate member that changes the flow direction of the movable member, and the plate member is inclined with respect to the flow of the fluid that has flowed into the sealed container so that the side far from the fluid inlet of the movable part is upward when there is no load. Install.

Description

  The present invention relates to a scroll compressor mounted on a cooling device such as an air conditioner or a refrigerator.

  In the sealed container, a compression mechanism portion that compresses the refrigerant, a drive portion that is disposed below and drives the compression mechanism portion, and lubricating oil (hereinafter simply referred to as “oil”) that lubricates the compression mechanism portion are stored. Such a high pressure shell type vertical scroll compressor is generally known.

  In such a configuration, the compression mechanism section includes a fixed scroll having a fixed spiral tooth formed on one surface of the fixed base plate, and a swing spiral tooth formed on one surface of the swing base plate. A compression chamber is formed opposite to the teeth, a swing scroll having a boss portion formed on the other surface of the swing base plate, an Oldham mechanism for preventing the swing scroll from rotating, and these are housed. And a frame. Also, an oil supply hole through which oil passes with the refrigerant discharged into the sealed container is formed in the shaft center part, and is slidably fitted to the rocking bearing of the boss part of the rocking scroll at one end of the main shaft part. A crankshaft provided with an eccentric shaft portion is provided.

  The drive unit includes an electric motor stator fixed to the hermetic container, and an electric motor rotor that is rotatably disposed inside the electric motor stator.

  The main shaft portion of the crankshaft is fixed to the motor rotor of the drive portion. When the main shaft portion of the crankshaft rotates together with the electric motor rotor, the eccentric shaft portion of the crankshaft rotates integrally with the main shaft portion, thereby giving the swinging motion to the swing scroll. Therefore, a balancer for canceling the centrifugal force generated by the swinging motion of the swing scroll is attached to the main shaft portion of the crankshaft, and a balancer cover that partially covers the balancer is provided at the lower part of the frame.

  In such a case, the refrigerant to be compressed flows in from the suction pipe on the side surface of the sealed container, turns around the balancer cover between the frame and the electric motor, and is compressed from the suction port provided in the frame to the compression chamber. It is taken in and compressed and discharged from the discharge tube to the outside of the sealed container.

  When the operating frequency of the scroll compressor is increased and the amount of refrigerant flowing from the suction pipe is increased, the flow velocity of the refrigerant swirling in the space around the balancer cover between the frame and the motor increases, and the mist-like state present in the sealed container The amount of oil that is wound up by the refrigerant increases, the amount of oil taken into the compression chamber increases, and as a result, the oil rise increases.

  Therefore, an introduction having an outflow hole through which the refrigerant flowing in from the suction pipe flows out, an outflow hole through which the refrigerant flowing in from the suction pipe flows out downward, and an outflow hole through which the refrigerant flowing in from the suction pipe flows out to the side A scroll compressor is proposed that regulates the flow rate of refrigerant around the balancer cover by controlling the flow rate of refrigerant around the balancer cover by introducing a suction chamber into the introduction chamber and diverting it up and down. (For example, refer to Patent Document 1).

  By the way, if the scroll compressor exceeds a high rotation range, for example, 5000 rpm, the amount of heat generated by the motor coil increases, and therefore, the motor coil needs to be effectively cooled. If the suction refrigerant is dispersed up and down at a constant ratio in the outflow hole as in Patent Document 1, the cooling effect of the motor coil positioned below the suction pipe cannot be sufficiently obtained. If such an operating state is continued, the motor coil temperature rises excessively, and in some cases, it may become 120 degrees or more.

  Further, when the rotational speed exceeds a certain rotational speed, for example, in a high rotational speed range exceeding 5000 rpm depending on the operating conditions, the refrigerant circulation amount sucked into the shell increases, and the refrigerant gas directed to the oil sump provided at the bottom of the shell also increases. The flow rate also increases. For this reason, the oil is frequently wound up by the flow of the refrigerant gas, and the oil that has been wound up is discharged to the outside of the compressor together with the refrigerant gas, and the oil in the compressor may be depleted.

  Therefore, the refrigerant flowing in from the suction pipe is made to collide with a plate attached to the spring through a hinge so as to be able to swing horizontally, so that the flow direction of the refrigerant is changed according to the rotational speed of the compressor. Things have been proposed. In this case, the operation of the plate opens in the horizontal direction because the higher the operating frequency of the compressor, the higher the collision pressure of the suction refrigerant against the plate. That is, when the rotation speed of the compressor increases, the refrigerant inflow amount to the space around the balancer cover is increased, and the refrigerant flow rate in the lower direction where the oil sump is located is reduced. In this way, the amount of oil wound in the oil sump is reduced by reducing the refrigerant flow rate in the lower direction during operation when the rotational speed of the compressor is high (see, for example, Patent Document 2).

Japanese Patent No. 2615971 (FIG. 1) JP 2012-17682 (FIGS. 2 and 3)

  In this way, in the scroll compressor, the refrigerant flows from the suction pipe of the hermetic container, and a part of the scroll rotates in the space around the balancer cover between the frame and the motor, and enters the compression chamber from the suction port at the bottom of the frame. It is taken in, compressed, and discharged from the discharge pipe. Part of the refrigerant that has flowed into the sealed container from the suction pipe flows into the motor at the lower part of the sealed container due to a collision with the lower part of the frame or the balancer cover, cools the motor, and is taken into the compression chamber from the suction port at the lower part of the frame. Compressed and discharged from the discharge pipe.

  In the scroll compressor of Patent Document 1 in which the suction refrigerant is simply divided up and down, the cooling effect of the motor coil located below the suction pipe cannot be sufficiently obtained during operation in the high rotation range, and the motor There is a problem that the coil temperature rises excessively.

  Further, in the compressor of Patent Document 2 in which the amount of refrigerant flowing into the space around the balancer cover is increased as the rotational speed of the compressor is increased, and the refrigerant flow rate in the lower direction with the oil sump is reduced, During the operation in the region, the amount of refrigerant flowing from the suction pipe increases, and the flow velocity of the refrigerant swirling in the space around the balancer cover between the frame and the electric motor increases. Then, the amount of oil that is attached to the balancer cover, the electric motor, the lower part of the frame, the inner surface of the sealed container, and the oil present in the space around the balancer cover that has become mist-like due to the rotation of the main shaft increases. As a result, the amount of oil taken into the compression chamber increases, and the amount of oil discharged from the discharge pipe to the outside of the compressor increases. As a result, the oil in the oil reservoir in the lower part of the sealed container is depleted, the oil cannot be supplied to the sliding part, and the sliding part may be seized and abnormally worn. In addition, there is a problem that the operating range of the compressor is limited because the amount of heat generated by the motor increases during operation in the high frequency range.

  The present invention has been made to solve the above-described problems, and it is a first object of the present invention to obtain a highly reliable scroll compressor that can reduce oil rising from the space around the balancer cover during operation in a high frequency range. This is the purpose of 1.

  In addition, a second object of the present invention is to make it possible to suppress the amount of heat generated by an electric motor during operation in a high frequency range.

  A scroll compressor according to the present invention includes a hermetic container, a suction pipe that allows fluid to flow into the hermetic container, an orbiting scroll having an orbiting spiral tooth, and a fixed that forms a compression chamber together with the orbiting scroll tooth of the orbiting scroll. It has a fixed scroll with spiral teeth, and is arranged below the compression mechanism part that compresses the fluid that flows into the sealed container through the suction pipe, and drives the compression mechanism part below the compression mechanism part inside the sealed container There is a movable part that is placed opposite to the drive part and the fluid inlet of the sealed container, and the upper part is fixed and rotates around the fixed part, and the inside of the sealed container depends on the collision pressure of the fluid that has flowed into the sealed container And a plate member for changing the flow direction of the fluid.

  In the scroll compressor according to the present invention, in a high-frequency operation region where the amount of fluid inflow from the suction pipe increases, as the suction fluid flow speed increases, the scroll compressor is disposed on the movable portion of the plate member disposed to face the fluid inlet. The applied load increases. Along with this, the movable portion is deformed, the collision incident angle of the suction fluid to the movable portion is increased, and the amount of suction fluid to be diverted downward is increased. As a result, the fluid flow rate in the horizontal direction toward the space between the frame and the drive unit is reduced, the increase in oil rising due to the winding of the fluid is suppressed, and the sliding part due to oil depletion in the oil reservoir at the bottom of the sealed container is suppressed. Seizure and abnormal wear can be prevented. Further, in the high frequency operation region, the amount of fluid that is diverted downward where the drive unit is disposed increases, so the amount of heat generated by the drive unit is suppressed, and the compressor can be operated under a wider range of operating pressure conditions. .

It is a longitudinal cross-sectional view which shows the whole structure of the scroll compressor which concerns on Embodiment 1 of this invention. It is a longitudinal cross-sectional view which shows the principal part of the scroll compressor which concerns on Embodiment 1 of this invention. It is a perspective view which expands and shows the leaf | plate spring of the plate member of the scroll compressor which concerns on Embodiment 1 of this invention. It is a perspective view which expands and shows the leaf | plate spring of the plate member of the scroll compressor which concerns on Embodiment 1 of this invention. It is a perspective view which shows the modification of the leaf | plate spring of the plate member of the scroll compressor which concerns on Embodiment 1 of this invention. It is a perspective view which expands and shows the leaf | plate spring retainer of the plate member of the scroll compressor which concerns on Embodiment 1 of this invention. It is a perspective view which shows the modification of the leaf | plate spring retainer of the plate member of the scroll compressor which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state which assembled | attached the leaf | plate spring and leaf | plate spring retainer of the plate member of the scroll compressor which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows operation | movement and an effect | action of a board member at the time of the driving | operation of the low rotation area of the scroll compressor which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows operation | movement and an effect | action of a board member at the time of the driving | operation of the low rotation area of the scroll compressor which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows operation | movement and an effect | action of a board member at the time of the driving | operation of the high frequency region of the scroll compressor which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows operation | movement and an effect | action of a board member at the time of the driving | operation of the high frequency region of the scroll compressor which concerns on Embodiment 1 of this invention. It is a perspective view which shows the board member which has the pore of the scroll compressor which concerns on Embodiment 2 of this invention. It is a perspective view which shows the leaf | plate spring retainer which has the rib of the plate member of the scroll compressor which concerns on Embodiment 3 of this invention. It is a perspective view which shows the leaf | plate spring retainer which has the inclination rib of the plate member of the scroll compressor which concerns on Embodiment 4 of this invention.

Embodiment 1 FIG.
FIG. 1 is a longitudinal sectional view showing an overall configuration of a scroll compressor according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view showing the main part of the scroll compressor according to Embodiment 1 of the present invention.
1 and 2, the scroll compressor 100 includes a sealed container 1, a compression mechanism unit disposed on the top of the sealed container 1, a drive unit disposed at the center of the sealed container 1, and the sealed container 1. And an oil sump 11 formed at the bottom. The scroll compressor 100 includes a suction pipe 13 serving as a fluid inlet for introducing a refrigerant that is a fluid into the sealed container 1, and a discharge pipe 30 for discharging the refrigerant compressed in the compression chamber to the outside. ,have.

  The compression mechanism section includes a fixed scroll 2 fixed to the hermetic container 1, an orbiting scroll 3, an Oldham ring 19 that prevents the orbiting scroll 3 from rotating, and a frame 7 that houses them. Yes. That is, the orbiting scroll 3 performs an oscillating motion without rotating with respect to the fixed scroll 2 by an Oldham ring 19 for preventing the rotating motion. The drive unit includes an electric motor stator 6 fixed to the hermetic container 1, and an electric motor rotor 4 that is rotatably disposed inside the electric motor stator 6. The oil reservoir 11 is provided with a pump 12 that supplies oil (lubricating oil) 10 to a sliding portion or the like through an oil supply hole 5 b in the main shaft portion 5 of the crankshaft 50. An electric motor rotor 4 of a driving unit is attached to the main shaft portion 5 of the crankshaft 50, and the crankshaft 50 is rotationally driven by the electric motor.

  More specifically, the fixed scroll 2 includes a fixed base plate 2a and fixed spiral teeth 2b formed on one surface of the fixed base plate 2a. On the other hand, the oscillating scroll 3 includes an oscillating base plate 3a, an oscillating spiral tooth 3b formed on one surface of the oscillating base plate 3a, and a hollow cylinder formed on the other surface of the oscillating base plate 3a. The boss 20 has a shape, is eccentrically combined with the fixed scroll 2, and is thrust-supported from below by the frame 7. Therefore, the surface of the swing base plate 3 a of the swing scroll 3 opposite to the swing spiral teeth 3 b acts as the thrust bearing surface 15. The swinging spiral tooth 3b forms a compression chamber together with the fixed spiral tooth 2b.

  The crankshaft 50 has an eccentric shaft portion 5 a that is slidably fitted to the swing bearing 20 a of the boss portion 20 of the swing scroll 3 at one end of the main shaft portion 5. When the main shaft portion 5 of the crankshaft 50 rotates together with the motor rotor 4, the eccentric shaft portion 5 a of the crankshaft 50 rotates integrally with the main shaft portion 5, thereby swinging the swing scroll 3. give. Therefore, a balancer 8 that cancels the centrifugal force generated by the swinging motion of the swing scroll is attached to the main shaft portion 5 of the crankshaft 50, and a balancer cover 9 that partially covers the balancer 8 is a lower part of the frame 7. Is provided. A space 21 around the balancer cover 9 between the frame 7 and the electric motor communicates with a suction port 22 formed in the frame 7.

  The fixed scroll 2 is fixed to the upper surface of the frame 7 with bolts, and a discharge port 16 is formed at the center of the fixed base plate 2a of the fixed scroll 2 to discharge the compressed and high-temperature and high-pressure refrigerant. Yes. The compressed high-temperature and high-pressure refrigerant is discharged into the high-pressure chamber 17 above the fixed scroll 2, passes through the discharge pipe 30, and is discharged out of the sealed container 1. The reverse flow of the refrigerant to the discharge port 16 is prevented by the discharge valve 18.

  A plate member 14 that is inclined with respect to the flow of the refrigerant flowing from the suction pipe 13 is attached to the lower part of the frame 7 in front of the suction pipe 13. The plate member 14 includes a plate spring 14a and a plate spring presser 14b that regulates the maximum deformation amount of the plate spring 14a.

3 and 4 are both perspective views showing enlarged leaf springs of the plate members of the scroll compressor according to Embodiment 1 of the present invention. FIG. 5 is a perspective view showing a modification of the leaf spring of the plate member of the scroll compressor according to Embodiment 1 of the present invention.
3 and 4, the leaf spring 14a has a fixed portion 141a and a movable portion 142a. A plurality of holes 143a are formed in the fixing portion 141a. On the other hand, a plurality of screw holes (not shown) corresponding to the plurality of holes 143a of the fixing portion 141a are formed in the lower portion of the frame 7, and are inserted into the screw holes of the frame 7 through the holes 143a of the fixing portion 141a. The fixing portion 141a is fixed to the frame 7 by a screw. In addition, the fixing | fixed part 141a and the flame | frame 7 may be fixed with welding or an adhesive instead of a screw. In this case, as shown in FIG. 5, the hole 143a is unnecessary.

  The movable part 142a is formed integrally with the fixed part 141a. That is, the fixed part 141a and the movable part 142a are integrally connected by the bent part 144a. For example, a bent portion 144a is formed by bending one rectangular SUS material, and a fixed portion 141a and a movable portion 142a are formed on both sides of the bent portion 144a. The angle θ formed by the fixed portion 141a and the movable portion 142a is an acute angle when there is no load.

  As shown in FIGS. 1 and 2, the movable portion 142 a is disposed at a position where the refrigerant flowing from the suction pipe 13 into the compressor hits. When the refrigerant hits the movable part 142a, the movable part 142a swings so as to rotate in the flow direction of the sucked refrigerant around the bent part 144a. In a state where the leaf spring 14a is fixed to the frame 7, the axial direction (arrow X in FIG. 3) of the bent portion 144a is arranged in the horizontal direction, and the movable portion 142a is the bent portion 144a extending in the horizontal direction. A circular motion (oscillating motion) can be performed with the center axis of rotation. That is, the movable portion 142a is disposed opposite to the front surface of the suction pipe 13 in the sealed container 1, and the upper portion is fixed and rotates around the fixed portion.

  Note that when the movable portion 142a swings due to the collision pressure of the refrigerant, stress is applied to the bent portion 144a, so the bent portion 144a is preferably formed with a curved surface.

  As described above, the leaf spring 14a is formed by bending a single plate member such as a SUS material so that a location where the refrigerant sucked from the suction pipe 13 collides (movable portion 142a) can be replaced with a hinge or the like. It can be swung with a simple configuration without using complicated components. Here, a SUS material is used as the leaf spring 14a, and the angle θ is set to an acute angle (inclination angle with the far side as viewed from the suction pipe 13 in the movable portion 142a) when no load is applied. In addition, a screw hole is provided in the lower part of the frame 7, and a round hole (hole 143a) is formed in the fixing portion 141a in order to fix the leaf spring 14a.

FIG. 6 is an enlarged perspective view showing the leaf spring presser of the plate member of the scroll compressor according to Embodiment 1 of the present invention. FIG. 7 is a perspective view showing a modification of the leaf spring presser of the plate member of the scroll compressor according to Embodiment 1 of the present invention.
In FIG. 6, the leaf spring retainer 14b that regulates the maximum amount of deformation of the leaf spring 14a includes a fixed portion 151a and a spring support portion 152a. A plurality of holes 153a corresponding to the plurality of holes 143a of the leaf spring 14a, that is, the plurality of screw holes (not shown) of the frame 7, are formed in the fixing portion 151a. Therefore, the fixing portion 151a is fastened to the frame 7 together with the fixing portion 141a of the leaf spring 14a by a screw inserted into the screw hole of the frame 7 through the hole 153a of the fixing portion 151a. Note that the fixing portion 151a and the frame 7 may be fixed by welding or an adhesive instead of screws. In this case, as shown in FIG. 7, the hole 153a is not necessary.

  The spring support portion 152a is formed integrally with the fixed portion 151a. That is, the fixed portion 151a and the spring support portion 152a are integrally connected by the bent portion 154a. For example, a bent portion 154a is formed by bending a single rectangular SUS material thicker than the leaf spring 14a, and a fixed portion 151a and a spring support portion 152a are formed on both sides of the bent portion 154a. Is formed. An angle θ2 formed by the fixed portion 151a and the spring support portion 152a is an obtuse angle (an inclination angle at which the side far from the suction pipe 13 in the spring support portion 152a is down).

  As shown in FIGS. 1 and 2, the movable portion 142a is arranged on the back side of the leaf spring where the refrigerant flowing into the compressor from the suction pipe 13 hits the leaf spring 14a.

FIG. 8 is a perspective view showing a state in which the leaf spring and leaf spring presser of the plate member of the scroll compressor according to Embodiment 1 of the present invention are assembled.
As shown in FIG. 8, the leaf spring 14a is fastened together with the leaf spring retainer 14b to the screw hole at the lower portion of the frame 7 by a screw (not shown) so that the securing portion 141a is overlapped with the securing portion 151a of the leaf spring retainer 14b. The Accordingly, as shown in FIGS. 1 and 2, the leaf spring 14a is installed at an inclination angle (the angle θ is an acute angle when no load is applied) on the side far from the suction pipe 13 in the movable portion 142a. The

  Next, the operation of the scroll compressor according to the first embodiment will be described with reference to FIGS. In the scroll compressor configured as described above, when the motor is energized, torque is generated in the motor rotor 4 and the main shaft portion 5 of the crankshaft 50 rotates. As a result, the orbiting scroll 3 supported by the eccentric shaft portion 5a of the crankshaft 50 and prevented from rotating by the Oldham ring 19 starts to swing. And the compression chamber comprised by the rocking scroll 3 and the fixed scroll 2 becomes small gradually, moving a compression chamber volume from an outer peripheral side to a center part, and compresses a refrigerant | coolant. A part of the refrigerant flowing from the suction pipe 13 swirls around the space 21 around the balancer cover 9 between the frame 7 and the electric motor, and is taken into the compression chamber from the suction port 22 formed in the frame 7. Further, a part of the refrigerant collides with the lower part of the frame 7 or the balancer cover 9 and flows downward, cools the electric motor, merges with the refrigerant swirling around the balancer cover 9, and is compressed from the suction port 22 of the frame 7. The gas is taken into the chamber, compressed, and discharged from the discharge port 16 at the center of the fixed base plate 2 a of the fixed scroll 2 to the outside of the sealed container 1 through the discharge pipe 30. At this time, the refrigerant swirling around the balancer cover 9 rolls up the mist-like oil in the sealed container 1 and is discharged out of the sealed container 1 together with the mist-like oil.

  The oil flows from the oil reservoir 11 at the bottom of the sealed container 1 through the oil supply hole 5b in the main shaft 5 via the pump 12, and is supplied to each bearing, the space on the sliding part side, etc., and formed in the frame 7. The oil drain hole (not shown) is returned to the oil reservoir 11.

Next, the operation of the plate member 14 will be described with reference to FIGS.
9 and 10 are explanatory views showing the operation and action of the plate member during operation in the low rotation range of the scroll compressor according to Embodiment 1 of the present invention. 11 and 12 are explanatory diagrams showing the operation and action of the plate member during the operation in the high frequency range of the scroll compressor according to Embodiment 1 of the present invention.

  When the compressor is operated at a low frequency (low rotation range), the amount of refrigerant flowing from the suction pipe 13 decreases, and the load acting on the leaf spring 14a decreases. As a result, the leaf spring 14a is deformed within a range of an inclination angle in which the angle θ is an acute angle (an inclination angle where the side far from the suction pipe 13 in the movable portion 142a of the leaf spring 14a is the upper side) (FIG. 9). The refrigerant amount B that is diverted downward is smaller than the refrigerant amount A that is diverted upward (FIG. 10).

  On the other hand, when the compressor is operated at a high frequency (high rotation range), the amount of refrigerant flowing from the suction pipe 13 increases, and the load acting on the leaf spring 14a increases. As a result, the leaf spring 14a is greatly deformed, and the angle θ becomes an obtuse angle (an inclination angle where the side far from the suction pipe 13 in the movable portion 142a of the leaf spring 14a is downward) (FIG. 11), and the refrigerant is branched downward. The amount B is larger than the refrigerant amount A that is diverted upward (FIG. 12). That is, by providing the leaf spring 14a, it is possible to adjust the refrigerant amount B to be diverted downward according to the operating frequency of the compressor. In addition, the material, thickness, length, and width of the leaf spring 14a are determined and adjusted based on the refrigerant inflow amount due to the operation frequency so that the required deformation amount is obtained. Moreover, by providing the leaf spring presser 14b on the back side of the leaf spring 14a, it is possible to restrict the leaf spring 14a from being deformed more than necessary. Thereby, it can suppress that stress is excessively applied to the bending part 144a, and it can prevent that the leaf | plate spring 14a bends and the movable part 142a isolate | separates from the fixing | fixed part 141a.

  As described above, the refrigerant flowing from the suction pipe 13 collides with the plate spring 14a of the inclined plate member 14 and is divided into an upper part and a lower part. The ratio of the refrigerant split flow is determined by the inclination angle of the plate spring 14 a of the plate member 14 with respect to the flow of the refrigerant flowing in from the suction pipe 13. That is, in the plate member 14, when the inclination angle of the leaf spring 14a is an obtuse angle (inclination angle where the side far from the suction pipe 13 in the movable portion 142a of the leaf spring 14a is downward), the amount of refrigerant diverted downward is growing. When the amount of refrigerant that is diverted downward increases, the flow velocity of the refrigerant swirling in the space 21 around the balancer cover 9 between the frame 7 and the electric motor decreases, and the amount of oil that is wound up by the refrigerant decreases. Therefore, the amount of oil discharged out of the sealed container 1 can be reduced. In addition, since the amount of refrigerant that is diverted downward increases, the cooling amount of the motor also increases.

Embodiment 2. FIG.
FIG. 13 is a perspective view showing a plate member having pores of a scroll compressor according to Embodiment 2 of the present invention. In FIG. is there. In the description, reference is made to FIG. 1 and FIG.
Here, the refrigerant flowing in from the suction pipe 13 contains some oil. The scroll compressor according to the second embodiment is provided with means for separating oil contained in the inflowing refrigerant.

  That is, in the scroll compressor according to the second embodiment, as shown in FIG. 13, the plate spring 14a and the plate spring retainer 14b of the plate member 14 are each provided with a plurality of pores 14c.

  In the scroll compressor according to the second embodiment, the refrigerant flowing from the suction pipe 13 passes through the pores 14c. When passing through the pores 14c, the flow velocity of the refrigerant containing oil increases, and the oil in the refrigerant collides with and adheres to the leaf spring retainer 14b, so that the refrigerant and the oil can be separated.

  In addition, it may replace with the fine hole 14c and may provide uneven | corrugated shape in the surface of the leaf | plate spring 14a or the leaf | plate spring retainer 14b. Also in this case, the collision area of the oil in the refrigerant increases and the amount of oil adhering to the leaf spring 14a or the leaf spring retainer 14b increases, so that the refrigerant and the oil can be separated.

Embodiment 3 FIG.
14 is a perspective view showing a leaf spring presser having ribs of a plate member of a scroll compressor according to Embodiment 3 of the present invention. In the figure, the same reference numerals are given to the same functional parts as those of Embodiment 1 described above. It is attached. In the description, reference is also made to FIG. 1 and FIG. 2 described above.
In the scroll compressor according to the third embodiment, ribs 155a and 155b are provided on both sides of a plate spring retainer 150A of the plate member 14.

  In the scroll compressor of the third embodiment, the refrigerant that has collided with the inclined plate member 14 is diverted upward and downward, but part of the refrigerant flows in the left-right direction. By providing the ribs 155a and 155b on both sides of the leaf spring retainer 150A, a part of the refrigerant flowing in the left-right direction can flow downward.

Embodiment 4 FIG.
14 is a perspective view showing a leaf spring presser having an inclined rib of a plate member of a scroll compressor according to Embodiment 4 of the present invention. In the figure, the same reference numerals are given to the same functional parts as those of Embodiment 3 described above. Is attached. In the description, reference is also made to FIG. 1 and FIG. 2 described above.
The scroll compressor according to the fourth embodiment is provided with inclined ribs 155c and 155d having a diverging shape toward the lower side on both sides of the leaf spring retainer 150B of the plate member 14.

  In the scroll compressor according to the fourth embodiment, the refrigerant that has collided with the inclined plate member 14 is diverted upward and downward, but part of the refrigerant flows in the left-right direction. By providing the inclined ribs 155c and 155d that are divergent toward the lower side on both sides of the leaf spring retainer 150B, the amount of refrigerant flowing downward can be further increased.

  DESCRIPTION OF SYMBOLS 1 Airtight container, 2 Fixed scroll, 2a Fixed base plate, 2b Fixed spiral tooth, 3 Oscillating scroll, 3a Oscillating base plate, 3b Oscillating spiral tooth, 4 Electric motor rotor, 5 Main shaft part, 5a Eccentric shaft part, 5b Oil supply hole, 6 Motor stator, 7 Frame, 8 Balancer, 9 Balancer cover, 10 Lubricating oil, 11 Oil reservoir, 12 Pump, 13 Suction pipe (fluid inlet), 14 Plate member, 14a Plate spring, 14b Plate spring Presser foot, 14c Fine pore, 15 Thrust bearing surface, 16 Discharge port, 17 High pressure chamber, 18 Discharge valve, 19 Oldham ring, 20 Boss part, 20a Swing bearing, 21 Space around balancer cover between frame and motor, 22 suction port, 30 discharge pipe, 50 crankshaft, 100 scroll compressor, 141a fixed part, 142a movable part, 143a hole, 144 a bent portion, 150A leaf spring retainer, 150B leaf spring retainer, 151a fixing portion, 152a spring support portion, 153a hole, 154a bent portion, 155a, 155b rib, 155c, 155d inclined rib, A refrigerant divided upward Amount, B Amount of refrigerant diverted downward, X Axial direction of the bent part.

A scroll compressor according to the present invention includes a hermetic container, a suction pipe that allows fluid to flow into the hermetic container, an orbiting scroll having an orbiting spiral tooth, and a fixed that forms a compression chamber together with the orbiting scroll tooth of the orbiting scroll. has a fixed scroll having a spiral tooth, the driving unit for driving a compression mechanism portion for compressing a fluid flowing into the closed container through the suction pipe, the compression mechanism portion are arranged in the compression mechanism portion of the interior of the sealed container A fixed portion that is disposed opposite the fluid inlet of the sealed container and is fixed inside the sealed container , a leaf spring that is a movable portion that rotates around the fixed portion, and a maximum deformation amount of the leaf spring is suppressed. and a plate spring retainer, in which and a plate member for changing the flow direction of the fluid in the sealed container in accordance with the impact pressure of fluid flowing into the closed container.

Claims (7)

A sealed container;
A suction pipe for allowing fluid to flow into the sealed container;
A swing scroll having a swinging spiral tooth, and a fixed scroll having a fixed spiral tooth that forms a compression chamber together with the swinging spiral tooth of the swing scroll, and flows into the sealed container through the suction pipe A compression mechanism for compressing the fluid,
A drive unit that is disposed below the compression mechanism unit inside the sealed container and drives the compression mechanism unit;
The movable container is disposed opposite to the fluid inlet of the sealed container, has a movable portion that is fixed at the upper part and rotates around the fixed part, and in the sealed container according to the collision pressure of the fluid that has flowed into the sealed container. A scroll compressor comprising: a plate member that changes a flow direction of the fluid.   The scroll compressor according to claim 1, wherein the plate member has the fixed portion and the movable portion connected at an acute angle.   The scroll compressor according to claim 2, wherein the movable part is a leaf spring, and the leaf spring is integrally formed with a fixed portion that is fixed inside the sealed container.   The scroll compressor according to claim 3, wherein the plate member includes the plate spring and a plate spring presser that suppresses a maximum deformation amount of the plate spring.   The scroll compressor according to claim 4, wherein at least one of the leaf spring and the leaf spring presser has a pore.   5. The scroll compressor according to claim 4, wherein at least one of the leaf spring and the surface of the leaf spring presser has an uneven shape.   The scroll compressor according to claim 4 which has a rib on both sides of said leaf spring retainer.

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