JPH0410565U

JPH0410565U -

Info

Publication number: JPH0410565U
Application number: JP5105390U
Authority: JP
Priority date: 1990-05-15
Filing date: 1990-05-15
Publication date: 1992-01-29
Anticipated expiration: 2005-05-15
Also published as: JPH083175Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による冷媒圧縮機
のモータ冷却方法を示す断面図、第２図は従来の
冷媒圧縮機のモータ冷却方法を示す断面図である
。１６は固定子鉄心を貫通する通路、１４は冷媒
量を調節する手段、１は圧縮機、２はモータ、３
は第１の膨張弁、４は第１の膨張弁の感温筒、５
は液管、６は溝部、７は固定子、９は回転子、１
１は戻り通路、１２は冷媒液、１４は第２の膨張
弁、１５は第２の膨張弁の感温筒、１６は冷媒液
通路である。なお、図中、同一符号は同一または
相当部分を示す。 FIG. 1 is a sectional view showing a method for cooling a motor of a refrigerant compressor according to an embodiment of the invention, and FIG. 2 is a sectional view showing a conventional method of cooling a motor of a refrigerant compressor. 16 is a passage passing through the stator core, 14 is means for adjusting the amount of refrigerant, 1 is a compressor, 2 is a motor, 3
is the first expansion valve, 4 is the temperature sensing cylinder of the first expansion valve, 5 is the temperature sensing cylinder of the first expansion valve.
is a liquid pipe, 6 is a groove, 7 is a stator, 9 is a rotor, 1
1 is a return passage, 12 is a refrigerant liquid, 14 is a second expansion valve, 15 is a temperature sensing cylinder of the second expansion valve, and 16 is a refrigerant liquid passage. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

a first expansion valve that adjusts the flow rate of refrigerant liquid from the external liquid pipe of the motor attached to the refrigerant compressor to the groove of the motor frame; A temperature sensing portion of the first expansion valve provided, a stator and a rotor built into the frame of the motor, and a return passage for returning refrigerant from the inside of the motor to the compressor side. In a cooling device for an electric motor, the temperature-sensitive tube of the first expansion valve is attached to the front surface of the frame of the motor, and the refrigerant penetrates from the outer periphery of the stator other than the groove portion to the inner periphery and reaches the outer periphery of the rotor. providing a liquid passage and a second expansion valve connected to the refrigerant liquid passage from outside the motor;
A cooling device for an electric motor, characterized in that a temperature sensing part of the second expansion valve is attached to the motor frame at the entrance of the return passage.