JPH048880A - Closed type electric compressor - Google Patents

Abstract

PURPOSE:To cool an operation capacitor with the air for heat release therefrom, and prevent the abnormal temperature rise of the operation capacitor by integrally jointing a base for housing the operation capacitor to the cover thereof, and drilling a plurality of vent holes through the cover. CONSTITUTION:A compressing element 12 and a drive motor 13 therefor are housed in a closed vessel 11. Also, a glass terminal 7 is fitted to the closed vessel 11, and this terminal 7 is connected to the motor 13. Furthermore, the glass terminal 7 is provided with an operation capacitor 3 concealed with a cover 2. In this case, vent holes 1 are drilled through the top of the cover 2. According to the aforesaid construction, when the temperature of the operation capacitor 3 rises during the operation of a closed type electric compressor, the air inside and outside the cover 2 flows through the vent holes 1, and the operation capacitor 3 can be air cooled due to natural convection. As a result, the abnormal temperature rise of the operation capacitor 3 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hermetic electric compressor used in refrigeration equipment such as refrigerators and air conditioners.

BACKGROUND OF THE INVENTION In recent years, in order to improve the efficiency of hermetic electric compressors, there has been a trend toward resistive start capacitor operation.

An example of a conventional hermetic electric compressor will be described below with reference to the drawings. FIG. 3 shows a general hermetic electric compressor, in which 11 is a hermetic container, 12 is a compressor element, and 13 is a motor for driving the compressor element 12, all of which are housed in the hermetic container 11. 7 is a glass terminal, airtight container 11
The motor 13 is connected to the motor 13. Figures 4 and 5 show the relationship between the installation of electrical parts in a conventional hermetic electric compressor, as found in Japanese Patent Application Laid-Open No. 1-211673, etc., where 4 is a base and 6 is an integrally installed part in the base 4. The starting relay 6 is also an overload protection device integrated into the base 4. A cover 14 is formed so as to be able to be integrally connected to the base 4. Reference numeral 3 denotes a driving unit, which is housed integrally at the back of the cover 14.

Reference numeral 10 is a mounting screw, and 8 is a bracket that is fixed to the closed container 11, and has a screw hole 9 corresponding to the mounting screw 1o.

In the above configuration, when the hermetic electric compressor is energized, the hermetic electric compressor can be started and operated.

Problems to be Solved by the Invention However, in the conventional configuration described above, when the hermetic electric compressor is operated, the operating capacitor 3 is sealed with the cover 14 and does not radiate heat, so the temperature of the operating capacitor 3 rises abnormally. I had the problem of putting it away.

In view of the above problems, the present invention provides a hermetic electric compressor that can prevent an abnormal temperature rise in an operating capacitor.

Means for Solving the Problems The present invention solves the above-mentioned conventional problems, and includes a cover having at least one ventilation hole for cooling the operating condenser.

Function: With this configuration, the air inside and outside the cover can enter and exit through the ventilation holes, and the operating condenser is cooled and radiates heat by natural convection of air, so that abnormal temperature rises in the operating condenser can be prevented.

EXAMPLE Hereinafter, a hermetic electric compressor according to an example of the present invention will be described with reference to the drawings. Note that parts that are the same as those in the conventional example will be described using the same reference numerals, and parts that are the same in structure and operation will be omitted. In FIGS. 1 and 2, 2 is a cover, which has a ventilation hole 1 bored in its upper surface.

In the above configuration, when the temperature of the operating capacitor 3 rises during operation of the hermetic electric compressor, air inside and outside the cover 2 enters and exits through the ventilation hole 1, and the operating capacitor 3 absorbs natural convection of air. The air is cooled and heat is dissipated.

Therefore, abnormal temperature rise of the operating capacitor can be prevented.

In this embodiment, the ventilation holes are formed on the top surface of the cover, but they may be formed on the side surface of the cover. Further, in this embodiment, the holes are formed only on the upper surface of the cover, but the holes may be formed on at least two or more surfaces of the cover, such as the upper surface and the lower surface of the cover.

Effects of the Invention As described above, the present invention has a base incorporating a starting relay and an overload protection device, and a cover corresponding to the base housing an operating capacitor, and the base and the cover are integrally coupled. , and the closed type electric compression compressor is pushed into the glass terminal and has a ventilation hole drilled in at least one place in the cover, so that the operating capacitor is cooled with air and radiates heat, thereby preventing the operating capacitor from rising abnormally. We can provide the machine.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the mounting relationship of a hermetic electric compressor in an embodiment of the present invention, Fig. 2 is a sectional view of the cover of Fig. 1, and Fig. 3 is a general hermetic electric compressor. A cross-sectional view of
FIG. 4 is an exploded perspective view showing the mounting relationship of a conventional hermetic electric compressor, and FIG. 6 is a sectional view of the cover shown in FIG. 4. 1... Ventilation hole, 2... Cover, 3...
... Operating capacitor, 4...Base, 5.
...Overload protection device, 6... Name of starting relay agent Patent attorney Shigetaka Awano and 1 unit Box diagram No--A Otori 3L 2-m-Cut 3-11 Operation] Sensor 4---Base 5-1-Over-collapsed load 4-view 1 Edge position 6--★Part time I-role diagram diagram

Claims (1)

[Claims] A compressor element and a motor are housed in an airtight container, and the airtight container is equipped with a glass terminal to which the motor is connected, and corresponds to a base incorporating a starting relay and an overload protection device, and the base housing an operating capacitor. A hermetic electric compressor, the base and the cover being integrally combined, the cover being press-fixed to the glass terminal, and the cover having at least one ventilation hole.