JP2013002417A - Compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an increase in an oil delivery quantity of a compressor used for an outdoor unit of an air conditioner.SOLUTION: This compressor includes an electric motor portion constituted of a rotor 2 and a stator 3 in a sealed vessel 1, a compression mechanism connected to the electric motor portion, and oil 4 in a bottom part of the sealed vessel 1, and includes an oil cover 7 for making the oil blowing up from an oil passage outlet on the shaft upper end flow in the radial direction in the end plate center of the rotor 2, and thereby the increase in the oil delivery quantity directly delivered out of a delivery pipe can be prevented since the oil sucked up by a shaft 5 is made to flow in the radial direction on the rotor upper end.

Description

  The present invention relates to a compressor used in an outdoor unit or the like of an air conditioner.

  In general, a compressor used for an air conditioner, a refrigerator, or the like includes an electric motor unit including a rotor and a stator in a sealed container, a compression mechanism unit connected to the motor unit, and oil at the bottom of the sealed container. Yes. In the conventional compressor, an oil passage 6 is provided at the center of the shaft 5 as shown in FIG. 3, and when the shaft 5 rotates, the oil 4 at the bottom of the sealed container 1 is sucked and a hole provided in the shaft. Oil 4 is supplied from 8 to the compression mechanism, and excess oil 4 that has not been used for refueling is discharged from the oil passage outlet at the upper end of the shaft 5 (see, for example, Patent Document 1).

JP-A-9-119388

  However, in the above-described conventional configuration, particularly when the oil flow rate is increased in operation at a high rotational speed, the oil spouts from the upper end of the shaft and is discharged from the discharge pipe provided at the upper portion of the shaft to the outside of the compressor. Oil discharge increased. As a result, the cooling efficiency of the air conditioner, refrigerator, etc. is reduced, and there is a risk that the oil in the bottom of the sealed container is insufficient and the operation of the compression mechanism cannot be performed smoothly.

  The present invention solves the above-described conventional problems, and an object thereof is to prevent an increase in oil discharge of a compressor.

  In order to solve the above-described conventional problems, a compressor according to the present invention is a compressor including an electric motor unit including a rotor and a stator in a sealed container, and a compression mechanism unit coupled to the electric motor unit. An oil cover is provided at the center of the end plate of the rotor. Thereby, since the oil which spouts from the upper end of the shaft is caused to flow in the radial direction, the oil is not directly discharged from the discharge pipe, so that an increase in oil discharge can be prevented.

  As described above, according to the present invention, since the oil spouted from the upper end of the shaft is not discharged directly from the discharge pipe by flowing in the radial direction, an increase in the amount of oil discharged from the compressor can be prevented.

The longitudinal cross-sectional view of the compressor in Embodiment 1 of this invention External view of the rotor in Embodiment 1 of this invention Vertical section of a conventional compressor

1st invention is a compressor provided with the electric motor part which consists of a rotor and a stator in an airtight container, and the compression mechanism part connected with the said electric motor part, Comprising: Oil is centered on the end plate of the said rotor. By providing the cover, an increase in the amount of oil discharged from the compressor can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a cross-sectional view of a compressor according to Embodiment 1 of the present invention. FIG. 2 is an external view of the rotor according to the first embodiment of the present invention.

  In FIG. 1, the hermetic container 1 is provided with an electric motor part composed of a rotor 2 and a stator 3, a compression mechanism part below the motor part, and an oil 4 at the bottom of the hermetic container 1. The rotor 2 is fixed to the shaft 5. An oil passage 6 is provided at the center of the shaft 5. An oil cover 7 is provided at the center of the end plate of the rotor 2 to flow the oil 4 sprayed from the oil passage outlet at the upper end of the shaft 5 in the radial direction.

  About the compressor comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the rotor 2 rotates during the operation of the compressor, the shaft 5 rotates to suck up the oil 4 at the bottom of the hermetic container 1 and supply the oil 4 to the compression mechanism through a hole 8 provided in the shaft 5. The sucked-up oil 4 reaches the upper end of the shaft 5 and is guided to an oil cover 7 provided at the center of the end plate of the rotor 2 so as to flow in the radial direction.

  Since the sucked-up oil 4 is flown in the radial direction at the upper end of the rotor 2 and is not directly discharged from the discharge pipe, an increase in oil discharge can be prevented.

  As described above, the compressor according to the present invention can prevent an increase in the amount of oil discharged from the compressor by flowing the oil jetted from the upper end of the shaft in the radial direction, so that highly efficient and reliable compression is achieved. Machine can be provided.

DESCRIPTION OF SYMBOLS 1 Airtight container 2 Rotor 3 Stator 4 Oil 5 Shaft 6 Oil passage 7 Oil cover 8 Hole

Claims (1)

A compressor provided with an electric motor part composed of a rotor and a stator in a sealed container, and a compression mechanism part connected to the electric motor part, wherein an oil cover is provided at the center of the end plate of the rotor. Features compressor.