JPH01211671A - Closed type motor-driven compressor - Google Patents

Abstract

PURPOSE:To reduce both the number of parts and the assembly cost expended by a simple work by mounting both a base having a starting relay and an overload protector and a cover having bellows at the part corresponding to an operation capacitor. CONSTITUTION:A closed type 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 which contains an operation capacitor 5 and has bellows 4a at the part corresponding to the 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, the parts, such as wiring members, a capacitor cap, etc. may become unnecessary and the assembly be executed simply with 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.

Hereinafter, an example of a conventional closed electric pressure two-hage compressor will be described with reference to the drawings. Figure 4 shows a cross section of a typical hermetic electric compressor, where 21 is a hermetic container, 22
is a compression element, 23 is a motor that drives the compression element 22,
Both are stored in a sealed container 21. 24 is a glass terminal, which is attached to the closed container 21 and connected to the motor 23.
is connected to. FIG. 5 shows the installation relationship of electrical parts, including a base in which a 25-piece starting relay (not shown) and an overload protection device (not shown) are integrated, a cover 26 covering the base 25; 27 is a clamp for fixing the cover. 30 is an operating capacitor, 31 is a screw that fixes the operating capacitor 30, and 32 is an operating capacitor 3.
This is a capacitor cap that covers the terminal section of 0.

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 inserted into the glass terminal 1V24, the cover 26 is inserted, and the cover 26 is fixed with the clamp 27. Next, the operating capacitor 30 is fixed to the system base (3 bases shown/not shown) with screws 31, and the capacitor cap 32 is placed over the operating capacitor 30 to complete the process.

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
This necessitates a relatively long wiring system for wiring the operation capacitor 30 and the capacitor cap 32, screws 31, etc., which increases the cost.

In view of the above problems, the present invention can be assembled with simple work,
The present invention also provides a hermetic electric compressor that is low in cost.

Means for Solving the Problems In order to solve the above-mentioned problems, the hermetic electric compressor of the present invention includes a base incorporating a starting relay and an overload protection device, and a base that houses a driving capacitor. The base has a cover provided with pleats at corresponding portions, and the base and the cover are integrally coupled and inserted and fixed to the glass terminal.

Effects of the present invention With the above-described configuration, since the base and the operating capacitor are incorporated, there is no need for long wiring members, and since the operating capacitor is housed in the cover, there is no need for a capacitor cap. No more installation work and no screws required. By adding pleats to the cover, the operating temperature of the capacitor can be maintained at the same temperature as before.

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 have the same groove structure and operation will be omitted.

In FIGS. 1 to 3, reference numeral 1 denotes a base, which includes a case portion 1a and a lid portion 1b. 2 is a PTC type starting relay that is integrated into the case portion 1a of the base 1; 3;
1 is a general disk-type overload protection device which is also integrated into the base 1. Reference numeral 4 denotes a cover which can 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. Reference numeral 4a denotes folds, which are formed on the outer circumferential surface of the back of the cover 4 in the vertical direction. Reference numeral 6 denotes a mounting screw, which is fixed to the airtight container 21 with a bladder 7), and a screw hole 8 corresponding to the mounting screw 6 is provided.

In the above configuration, the installation procedure will be described next. After wiring the base 1 and the operating capacitor 5 in advance, the base 1 and the cover 4 are joined together, and the glass terminal/l is connected.
/24 and screw it onto the bracket with the mounting screw 6 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. Furthermore, since the operating capacitor 5 is connected to the base 1 via the cover 4, the starting relay 2
．． Less susceptible to direct heat effects from the overload protection device 3,
Due to the heat dissipation effect of the pleats 4a, the operating temperature of the capacitor can be maintained at the same temperature as before.

Effects of the Invention As described above, the present invention includes a base incorporating a starting relay and an overload protection device, and a cover that houses an operating capacitor and is provided with folds at a portion corresponding to the operating capacitor. By combining the above-mentioned cover into one body and inserting and fixing it into the above-mentioned glass terminal, parts such as wiring members and capacitor caps are not required.
Therefore, it is possible to provide a hermetic electric compressor that can maintain the operating temperature of the condenser at the same level as before, is easy to assemble, and is inexpensive.

[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 line taken along line A-A' in 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 a conventional hermetic electric compressor. 1...Base, 2...Start relay, 3...Overload protection device, 4-Cover, 4a...-Fold, 5...
・Operation capacitor, 24...Glass terminal.

Claims (1)

[Claims] In addition to housing the compression element and motor in a sealed container,
The hermetically sealed 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 that houses an operating capacitor and has folds in a portion corresponding to the operating capacitor. , a hermetic electric compressor in which the base and the cover are combined and inserted and fixed into the glass terminal.