JP2553507B2 - Scroll type compressor - Google Patents

Description

TECHNICAL FIELD The present invention relates to a scroll compressor used in a refrigeration cycle or the like.

2. Description of the Related Art In recent years, scroll type compressors have been attracting attention as compressors for air conditioning because of their high efficiency and quietness.

An example of the above-described conventional scroll compressor will be described below with reference to the drawings.

FIG. 2 shows a cross section of a conventional scroll compressor. In FIG. 2, 1 is a closed casing, 2 is a motor part, and a block 3 and a fixed scroll are provided above the motor part.
A machine unit body 7 composed of 4, a revolving scroll 5, and a rotation preventing mechanism 6 is fixed. The motor unit 2 is composed of a roller 8 and a stator 9, and a fin 10 is formed on the upper end of the rotor 8. The fixed scroll 4 includes an end plate 4a and an end plate.
It is composed of a wrap 4b having a uniform thickness and height, which is formed by an involute or a curve similar to the involute that stands upright on 4a. The orbiting scroll 5 is upright on the end plate 5a and the end plate 5a, and the wrap 4b of the fixed scroll 4 is provided.
It is composed of a wrap 5b having the same curve as, and is restrained by the rotation preventing mechanism 6. Reference numeral 11 is a discharge hole, and 12 is a suction hole. Reference numeral 13 denotes a protrusion provided on the opposite side of the wrap 5b of the orbiting scroll 5. Reference numeral 14 denotes a shaft supported by the block 3, and a projection 13 of the orbiting scroll 5 is provided on a boss portion 14a provided at an end portion on the machine body 7 side and eccentric from the shaft center.
The orbiting scroll 5 is connected to the motor unit 2 by housing the. In addition, wrap 4b and wrap 5b
15 is formed. Further, 16 is a discharge pipe, and 17 is a suction pipe.

The operation of the scroll compressor configured as described above will be described below.

As the shaft 14 rotates, the refrigerant (the refrigerant flow is indicated by an arrow) is discharged from the discharge hole 11 into the closed casing 1, but is then discharged from the discharge pipe 16 to a cooling system (not shown). .

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described configuration, the refrigerant is separated to some extent from the oil contained in the refrigerant immediately after being discharged from the discharge hole, and the oil is gravitated to the lower side of the machine unit main body. Although it flows, the discharge pipe is located below the machine body, so once separated oil is discharged to the system from the discharge pipe together with the refrigerant.
It had a problem that oil was generated.

In view of the above problems, the present invention provides a scroll type compressor that prevents oil from rising and has high reliability.

Means for Solving the Problems In order to solve the above-mentioned problems, the scroll compressor according to the present invention has a discharge pipe above the machine body after flowing the discharged refrigerant into the fins of the rotor to separate the oil. It is configured such that it is discharged to the system more.

Action The present invention has the above-described configuration, whereby the oil contained in the discharged refrigerant is separated and oil rising can be prevented.

Embodiment Hereinafter, a scroll compressor according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a cross section of a scroll type compressor in an embodiment of the present invention. In FIG. 1, reference numeral 18 denotes a refrigerant passage pipe, and the refrigerant (the flow of the refrigerant is shown by an arrow in the drawing) discharged from the discharge hole 11 passes through the refrigerant passage pipe 18 and the rotor 8
The oil is discharged toward the fins 10 and the oil is separated. Since the separated oil flows downward in the closed casing 1 due to gravity, the oil flowing out of the discharge pipe 16 provided above the machine body 7 into the system can be suppressed to a minimum and oil rising can be prevented. You can

As described above, the present invention discharges the discharged refrigerant toward the fins of the rotor through the refrigerant passage tube to separate the oil, and is configured to discharge the refrigerant to the system from above the machine unit main body. It is possible to prevent oil from rising and improve reliability.

[Brief description of drawings]

FIG. 1 is a sectional view of a scroll compressor according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional scroll compressor. 1 ... Hermetically sealed casing, 2 ... Motor part, 7 ... Machine part body, 8 ... Rotor, 10 ... Fin, 11 ... Discharge hole, 16
…… Discharge pipe, 18 …… Refrigerant passage pipe.

Claims (1)

(57) [Claims] 1. A hermetically sealed casing, a mirror plate, two intermeshing scrolls each having a wrap standing upright on the mirror plate, a block fixing one of the two scrolls, and a scroll for preventing the other scroll from rotating. A coolant passage pipe configured to have a machine portion main body including an automatic prevention mechanism for performing a swirling motion, a motor portion including a rotor and a stator, and configured to flow a discharge refrigerant to a fin above the rotor, and the machine portion main body. Scroll type compressor with a discharge pipe located above.