JPH01211673A - Closed type motor-driven compressor - Google Patents

Abstract

PURPOSE:To reduce both the number of parts and the assembly cost expended by simple procedures by mounting both a base having a starting relay and an overload protector and a cover receiving a base containing an operation capacitor. CONSTITUTION:A closed container 21 contains both a compression element and a motor. The closed container 21 has a glass terminal 24 to which a motor is connected. The container 21 also has both a base 1 which includes a starting relay 2 and an overload protector 3 and a cover 4 receiving the base 1 which contains an operation capacitor 5. After the base 1 is wired to the operation capacitor 5, the base 1 is integrally joined with the cover 4, plugged in the glass terminal 24 and finally, tightened to a bracket 7 with a mounting screw 6. As a result, parts, such as wiring members, a capacitor cap, etc. may become unnecessary and the assembly be executed by simply procedures at low cost.

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. Figure 4 shows a cross section of a typical 2-Heno hermetic electric compressor, where 21 is a hermetic container, 22 is a compression element 23, a motor that drives the compression element 22, and both are housed in the hermetic container 21. . A glass terminal 24 is attached to the closed container 21 and connected to the motor 23.

FIG. 5 shows the installation relationship of electrical parts, 25 is a base in which a starting relay (not shown) and an overload protection device (not shown) are integrated, 26 is a cover that covers the base 25, 27 is a clamp for fixing the cover 26.

30 is an operating capacitor, 31 is a screw for fixing the operating capacitor 3o, and 32 is a capacitor camp that covers the terminal portion of the operating capacitor 30.

In the above configuration, the installation procedure will be described next. First, after wiring the base 25 and the operating capacitor 30, the base 25 is pushed into the glass terminal 24, the cover 26 is inserted, and the cover 26 is fixed with the clamp 27. Subsequently, the operating capacitor 3o is fixed to a system base (not shown) with screws 31, and the capacitor cap 32 is placed over the operating capacitor 30 to complete the operation.

Problems to be Solved by the Invention However, with the above configuration, as mentioned above, the main work is divided into two times, which is complicated, and the base 25
However, the capacitor cap 32, screws 31, and the like require a relatively long wiring member to connect the drive capacitor 30 and the capacitor cap 32, and the capacitor cap 32, screws 31, etc. also cause an increase in cost.

In view of the above problems, the present invention provides an inexpensive hermetic electric compressor that can be assembled with simple work.

Means for Solving the Problems In order to solve the above problems, the hermetic electric compressor of the present invention has a base incorporating a starting relay and an overload protection device, and a base housing an operating capacitor. a cover, and the base and the cover are integrally combined,
It has a configuration in which it is pressed and fixed into the glass terminal.

Function The present invention incorporates the base 12 operating capacitor in the above-described structure, so there is no need for long wiring members, and since the operating capacitor is housed integrally in the cover, there is no need for a capacitor cap. Also, there is no need to install it to the system base, and no screws are required.

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 to 3, reference numeral 1 denotes a base, which also includes a case portion 10 and a lid portion 1b. 2 is a PTC type starting relay integrated into the case portion 1a of the base 1; 3;
is a general disk-type overload protection device which is also integrated into the base 1. A cover 4 is formed so as to be integrally connected to the base 1. Reference numeral 5 denotes an operating capacitor, which is housed integrally at the back of the cover 4. 6 is a mounting screw, 7 is fixed to the closed container 21 with a placket, and has 5 screw holes 8 corresponding to the mounting screws 6.

In the above configuration, the installation procedure will be described next. First, after wiring the base 1 and the operating capacitor 5, the base 1 and the cover 4 are combined together, and the glass terminal 2
4, and screw it onto the bracket using the mounting screws to complete.

Therefore, it can be installed with extremely simple work, does not require long wiring members or capacitor caps, and is characterized by low cost. Further, the operation capacitor 5 is connected to the base 1 via the cover 4, and the starting relay 2 is connected to the base 1 via the cover 4.
, it also has the advantage of being less susceptible to direct thermal effects from the overload protection device 3.

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 by having a configuration in which the glass terminal is pressed and fixed, parts such as wiring members and capacitor caps are not required, and the hermetic electric compressor can be assembled with simple work and is low in cost. can be provided.

[Brief explanation of the drawing]

FIG. 1 is a 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 base of FIG. 1, and FIG. 3 is a sectional view of the cover of FIG. 1. FIG. 4 is a sectional view of a general hermetic electric compressor, and FIG. 5 is a perspective view showing the mounting relationship of the conventional hermetic electric compressor. 1...Base, 2...Starting relay, 3...Overload protection device, 4...Cover, 5...Operation capacitor, 24...Glass terminal.

Claims (1)

[Claims] In addition to housing the compression element and motor in a sealed container,
The airtight container includes a glass terminal to which the motor is connected, a base incorporating a starting relay and an overload protection device, and a cover corresponding to the base housing an operating capacitor, the base and the cover being connected to each other. A hermetic electric compressor that is integrally connected and pushed into the glass terminal.