JPS58128493A - Discharge apparatus of rotary compressor - Google Patents

Abstract

PURPOSE:To reduce the height of a rotary compressor and the discharge amount of oil by connecting a sleeve pipe at the facing position aside from a cylindrical case and the coil end of the winding of a motor-driven rotary compressor body, so that said sleeve pipe may not protrude into the cylindrical case. CONSTITUTION:The discharged coolant mixed with the oil 17 compressed and discharged from a rotary compression element 4 passage through the air gap 11 of motor-driven element 3, and above motor-driven element 3, it collides with an upper coil end 19 through the revolution of a rotor 10, while causing the gas to be separated from liquid, and the gas coolant circulates in an outer cooling circuit from the opening of a discahrge pipe 18. As the opening of the discharge pipe 18 is protruded, the oil 17 separated at the upper coil end 19 etc. adheres onto an inner wall, and outflow from the discharge pipe 18 is prevented, and the necessary amount of oil can be reduced. As the discharge pipe 18 is protruded into a cylindrical case 2 through a sleeve pipe 20 installed aside after a motor-driven rotary compressor body 5 is press-fitted into the cylindrical case 2, the press-fitting work for the motor-driven rotary compressor body 5 is not disturbed at all, and the total height can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a discharge device for a rotary compressor, and an object of the present invention is to lower the height of the rock in terms of rotational pressure and reduce the amount of oil discharged.

As shown in FIGS. 1 and 2, a conventional rotary compressor
Since the discharge pipe is provided in the center of the upper cover plate that closes the opening of the cylindrical case and projects into the cylindrical case,
During operation, oil adhering to the inner walls of the lid body, etc., flows into the opening of the discharge pipe, which can reduce the amount of oil discharged, but the discharge pipe does not allow the overall height to be lowered. If the discharge pipe is installed from the lateral direction of the cylindrical case, the discharge pipe must protrude into the cylindrical case, even if the electric rotary compressor body is to be press-fitted. Inside! ! The problem is that the oil adhering to the pipe flows together with the discharged gas refrigerant to the opening of the discharge pipe, increasing the amount of oil discharged.

The present invention has been made in view of the above points, and will be explained below based on the embodiment shown in IMK. The electric rotary compressor body (@) in which the sK rotary compression element (4) is arranged is press-fitted and held, and both openings of the cylindrical case (!) are closed with a lid plate T.
It is a rotary compressor formed by closing 8+(7).

The electric element (3) is constructed by a stator (9) which houses a winding (8) and is press-fitted into the inner wall of a cylindrical case, and a rotor which is located inside the stator and rotates. ("1) is an air gap formed by the inner periphery of the X7-ri (91O) and the outer periphery of the 0. It is composed of mounting parts H041 provided on both sides of the cylinder and press-fitted into the inner wall of the cylindrical case (2).1J5
1Fi space 1 between cylindrical case (2) and cylinder
Attached to the cylindrical case protruding from 1 is a nine-terminal pharynx. (lη is the cylindrical case (2) and the lower plate (
7) and the bottom formed by KjelP is the oil collected.

081 is a cylindrical case (K) from the lateral direction facing the upper coil end 4 of the winding (8) of the electric element (3).
A discharge pipe which is connected to the cylindrical case (2) so as not to protrude into the case, is pushed through the sleeve pipe, and is made to protrude into the cylindrical case (2) and is hermetically welded to the sleeve pipe. After press fitting the electric rotary compressor body (6) into the sleeve pipe.

In the rotary pressure MII discharge device configured in this way, nine oil aη is compressed by the rotary compression element (4) and discharged.
The discharged refrigerant mixed with
Gas refrigerant circulates through the opening of the q-thickness of the discharge pipe and through an external cooling circuit (not shown). The nine oils aη separated at the upper coil end 01 etc. are inside the cylindrical case (2) etc.! ! However, since the opening of the discharge pipe protrudes from the inner wall of the cylindrical case, the oil Oη attached to the inner wall does not flow out from the discharge pipe due to the discharge gas refrigerant flow, reducing the amount of oil discharged. Yes, the discharge pipe (18J is a cylindrical case (
2) After press-fitting the electric rotary compressor body (fl) into the interior, in order to push through the sleeve tube provided laterally and protrude into the cylindrical case (2), the electric rotary compressor body (6) is press-fitted. This does not pose any problem and the overall height can be reduced.

As described above, the present invention provides a rotary compressor in which an electric rotary compressor body is press-fitted and held in a cylindrical case. In order to prevent the internal pressure from protruding, the sleeve pipe is connected, and after the 1 power distribution rotational pressure N machine body is press-fitted, the sleeve pipe is inserted, the discharge pipe is protruded into the cylindrical case, and the discharge pipe is hermetically welded to the 3 1 pipe. By inserting the sleeve pipe from the lateral direction inside the cylindrical case and sliding the discharge pipe into the case, there is no problem in press-fitting the electric rotary compressor body, and the overall height can be lowered. Since it protrudes from the inner wall of the case, the oil adhering to the inner wall does not flow out from the discharge pipe together with the refrigerant flow, and the oil discharge 111
It has practical young fruit that can be reduced by -1.

[Brief explanation of the drawing]

9IS1 to 2 show a conventional example, $1 is a sectional view of a discharge pipe vertically provided to the upper body, IN2 is a cross-sectional view, and FIGS. 3 to 5 are an implementation of the present invention, w! Figure I3^ is a vertical sectional view of the rotary compressor, Figure vI4 is a horizontal ith side view of the rotary compressor, and Figures 1 to 5 are enlarged sectional views of the main parts.

Claims (1)

[Claims] 1. In a rotary compressor in which an electric rotary compressor body is press-fitted and held within a cylindrical case, the coil end of the winding of the electric rotary compressor body does not protrude into the cylindrical case at a position facing the coil end in the lateral direction of the cylindrical case. Sleeve tube, so on! A discharge device for a rotary compressor, characterized in that after the electric rotary compressor body is press-fitted, a sleeve pipe is inserted, the discharge pipe is projected into a cylindrical case, and the discharge pipe is hermetically welded to the sleeve pipe.