JP3562007B2 - Horizontal scroll compressor - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a scroll compressor used for an air conditioner or the like.
[0002]
[Prior art]
FIG. 4 shows an overall configuration diagram of a conventional horizontal scroll compressor. Reference numeral 101 denotes a driving motor, which applies rotational power to a crankshaft 102. At one end of the crankshaft 102, a turning drive engaging portion 103 provided eccentrically with respect to the center of the crankshaft 102 is provided, and inside the turning drive engaging portion 103, a turning drive shaft 105 of a turning spiral blade component 104 is provided. Turn. The revolving spiral blade component 104 is prevented from revolving by the revolving constraining component 106, and revolves with the rotation of the crankshaft 102.
[0003]
When the swirling swirl vane component 104 swirls, the compression chamber 107 between the fixed swirl vane and the swirl swirl vane moves from the outer periphery of the blade to the center, reducing its volume, the pressure in the compression chamber 107 rises, and discharge from the center. Is done. In this case, as the swirling spiral blade component 104 turns, the compression chamber 107 gradually moves to the center, and performs a compression action while reducing the volume.
[0004]
Lubricating oil for lubricating each part is supplied from a lubricating oil reservoir 109 to a crankshaft through-hole 110 penetrating through the crankshaft 102 by a trochoid pump 108 driven by rotation of the crankshaft 102 or an oil supply pipe instead. The sliding part is lubricated, and partly passes through a throttle device 111 provided below the swirling spiral blade part 104 to lubricate the thrust surfaces of the rotation restraining part 106, the swirling spiral blade part 104 and the fixed spiral blade part 112. ing.
[0005]
[Problems to be solved by the invention]
However, in the case of the horizontal scroll compressor, the lubricating oil that has passed through the throttle device provided in the orbiting spiral blade component 104 collects downward due to the influence of gravity, and the lubricating oil is deposited on the sliding portion of the upper rotation restricting component 106. There was a problem that it was difficult to turn around. For this reason, the loss due to friction increases in the sliding portion of the upper rotation restricting component 106, which causes a reduction in the efficiency of the compressor.
[0006]
The present invention solves the above-mentioned conventional problems, and solves the problem of the horizontal scroll compressor, which solves the problem of lubricating oil shortage to the upper sliding portion of the rotation constraining component 106, and provides a high-efficiency scroll compressor. The purpose is to provide.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a scroll compressor according to the present invention has a configuration in which an oil supply passage having a throttle device provided in an orbiting spiral blade component is provided so as to open near an upper sliding portion of the rotation restricting component.
[0008]
Further, an oil supply passage having a throttle device provided in the swirling spiral blade component is provided so as to be opened in front of the upper sliding portion of the rotation restricting component with respect to the turning direction of the swirling spiral blade component.
[0009]
[Action]
With the horizontal scroll compressor according to the present invention having the above-described configuration, the lubricating oil that has passed through the expansion device provided on the orbiting swirl vane component can easily flow to the sliding portion of the upper rotation restricting component, and can rotate. Since more lubricating oil is supplied to the sliding part on the side where the reaction force acts during the compressing action of the restraining part, loss due to friction at the sliding part can be reduced. In addition, the lubricating oil that has lubricated the sliding portion of the upper rotation-restricting component collects downward due to gravity, and the lubrication of the sliding portion of the lower rotation-restricting component is also performed smoothly.
[0011]
【Example】
First, an embodiment according to claim 1 of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a longitudinal sectional view of one embodiment of a scroll compressor of the present invention, and FIGS . 2 and 3 are enlarged views of a main part. A compression mechanism 2 and a stator 4 of a motor 3 for driving the compression mechanism 2 are fixed inside the closed container 1, and a crankshaft 6 for driving the compression mechanism 2 is connected to the stator 5 of the motor 3, and the compression mechanism of the closed container 1 is The area around 2 is a lubricating oil reservoir 7. The compression mechanism 2 includes a fixed spiral blade component 10 having a fixed spiral blade 9 integrally formed on a fixed head plate 8 and a swirling spiral blade 12 meshing with the fixed spiral blade 9 to form a plurality of compression chambers 11. Swirl vane part 14 formed on the above, a rotation restricting part 15 for preventing rotation of the swirl spiral blade part 14 and performing only rotation, and a swivel drive shaft provided on the opposite side of the swirl blade 12 of the swivel end plate 13. 16, an eccentric bearing 18 provided inside the main shaft 17 of the crankshaft 6, into which the turning drive shaft 16 is fitted, a bearing part 19 having a main bearing 18 for supporting the main shaft 17 of the crankshaft 6, A flat plate component 33 having an axial movement restricting flat plate 32 for restricting the axial movement of the swirling spiral blade component 14 is disposed at a small gap from the revolving end plate 13 on the rear surface of the revolving end plate 13. On the flat plate component 33, a sliding partition ring 34 for dividing the gas pressure applied to the back surface of the swivel plate 13 into a discharge pressure applied to the central portion and a pressure lower than the discharge pressure applied to the outer periphery of the swivel plate 13 is provided. The refrigerant gas sucked from the suction pipe 20 of the compressor enters the compression mechanism 2 from the suction port 21 of the compression mechanism 2, is compressed in the compression chamber 14, and is provided from the discharge port 22 to the discharge chamber 23 and the outer periphery of the fixed end plate 8. The discharge refrigerant gas is discharged to a discharge chamber 26 between the electric motor 3 and the compression mechanism 2 through a discharge passage 24 and a discharge passage 25 provided in the bearing component 19, and the discharged refrigerant gas passes through a discharge pipe 28 through a passage 27 around the electric motor. Guided out of. On the other hand, the lubricating oil is forcibly supplied by the trochoid pump 29 to lubricate each part through the crankshaft through-hole 30, and a part of the diaphragm opens near the upper sliding portion of the rotation restricting component 15 provided on the swirling spiral blade component 14. The upper sliding portion of the rotation restricting component 15 passes through the device 35, and the lubricating oil collected downward by gravity lubricates the lower sliding portion of the rotation restricting component 15.
[0013]
In FIG. 3, a diaphragm device 35 provided on the swirling spiral blade component 14 is provided so as to open ahead of the upper sliding portion of the rotation restricting component 15 in the turning direction of the swirling spiral blade component 14, and the compression of the rotation restricting component 15 is performed. The lubricating oil is supplied more to the sliding portion on the side where the reaction force during the operation is working .
[0014]
【The invention's effect】
An advantage of the present invention is that an oil supply passage having a throttle device provided in a swirling spiral blade component is provided so as to be opened near an upper sliding portion of a rotation constraining component , and further an oil supply passage having a throttle device provided in the swirling spiral blade component. Is provided in front of the upper sliding portion of the rotation constraining component with respect to the turning direction of the swirling vane component, so that the slide on the side on which the reaction force acts during the compression action of the rotation constraining component is provided. Since more lubricating oil is supplied to the moving parts, the lubricating oil that has passed through the throttle device provided on the swirling swirl vane parts is easy to flow to the sliding part of the upper rotation restraining part, which is a problem with the horizontal scroll compressor. It is an object of the present invention to solve the problem of lubrication of the upper sliding portion of the rotation constraining component, and to provide a high efficiency scroll compressor.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of one embodiment of a scroll compressor according to the present invention. FIG. 2 is an enlarged view of the main part of FIG. 3; FIG. Explanation of code]
DESCRIPTION OF SYMBOLS 1 Closed container 2 Compression mechanism 3 Electric motor 6 Crankshaft 7 Lubricating oil reservoir 8 Fixed head plate 9 Fixed spiral blade 10 Fixed spiral blade part 11 Compression chamber 12 Rotating spiral blade 13 Rotating head plate 14 Rotating spiral blade component 15 Rotation restraining component 16 Rotating drive Shaft 29 Trochoid pump 30 Crank shaft through hole 34 Sliding partition ring 35 Throttling device

Claims (1)

An electric motor, a lubricating oil reservoir, and a compression mechanism driven by the electric motor are provided inside the closed container, and the compression mechanism is provided with a fixed spiral blade part having a fixed spiral blade formed on a fixed head plate, and A swirling spiral blade part formed on a swiveling end plate and having a swirling spiral blade that meshes with the swirling blade to form a plurality of compression chambers; A crankshaft for driving the spiral blade component, and a bearing member for rotatably supporting the crankshaft in the lateral direction, a through hole is provided in the crankshaft, and the gas discharged from the compression mechanism is supplied to the crankshaft and the crankshaft. Discharge into the space including the electric motor, and engage the eccentric drive engagement portion provided on the crankshaft on the back of the end plate of the swivel head opposite to the swirl swirl to drive the swirl swirl blade part. A pivoting drive engaging portion, and a sliding partition ring partitioning the outside of the pivoting drive engaging portion on the back surface of the pivoting end plate and a center portion are provided, and an inner chamber formed inside the communicating portion and the compression chamber are communicated with each other. An oil supply passage having a throttle device to be provided is provided in the swirling spiral blade part, and a pump or an oil supply pipe is provided at an end of the crankshaft opposite to the swivel drive engaging portion, and one end of the pump or the oil supply pipe is provided with the crankshaft. In a scroll compressor which communicates with a through hole and has the other end opened to the lubricating oil reservoir, an oil supply passage having the throttle device provided in the orbiting spiral blade part is provided near an upper sliding portion of the rotation restricting part. An oil supply passage having an opening and provided with the throttle device provided in the swirling spiral blade component is provided in front of an upper sliding portion of the rotation restricting component with respect to a turning direction of the swirling spiral blade component. Toss Horizontal scroll compressor.

Images