JPH03111678A - Closed type motor-driven compressor - Google Patents

Abstract

PURPOSE:To improve the workability and reduce the cost of electric parts for a closed type motor-driven compressor by providing a base integrated with a bag-like terminal containing chamber and an operating capacitor contained in the opposite side of a glass terminal in the terminal containing chamber. CONSTITUTION:A bag-like cover 20 has an opening end. A base 21 is enagaged with the opening end of the cover 20 to be fitted with a glass terminal 11. The bag-like terminal containing chamber 21b and a capacitor base part 21c where a capacitor is installed are provided integrally. An operating capacitor 22 is contained on the terminal containing chamber 21b on the opposite side of the glass terminal. Only one main work is required, and need of a capacitor case or a long wiring material is eliminated. The workability can thus be improved, and the economy is improved extremely.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to electrical components used in hermetic electric compressors used in refrigerators, air conditioners, and the like.

BACKGROUND OF THE INVENTION In recent years, household refrigerators and air conditioners often use rotary compressors equipped with highly efficient and inexpensive permanent capacitor type drive motors.

Hereinafter, a conventional rotary compressor will be described with particular attention to its electrical components with reference to the drawings.

FIG. 2 is an electrical circuit diagram using a conventional permanent capacitor type drive motor.

1 is a power supply, 2 is a motor, 3 is a main winding that constitutes the motor 2, 4 is also an auxiliary winding, 6 is an overload protection device provided between the motor 2 and the power supply 1, 6 is an auxiliary winding 4 and This is an operating capacitor installed between the power supply.

FIG. 3 shows the installation state of electrical components of a conventional rotary compressor, where 10 is a sealed container of the rotary compressor, and 11 is a glass terminal provided at one end of the sealed container 1o. 12 is a bag-shaped terminal case that is attached to the glass terminal iL/11.
It has a built-in terminal (not shown) corresponding to the 13 is a disk type overload protection device, and 14 is an operating capacitor. 16 is a terminal case 12. Overload protection device 13. A wiring material for wiring the operating capacitor 14 and the power supply 1, 16 a capacitor cage for housing the operating capacitor 14, 17 a cover for housing the terminal case 12 and the overload protection device 13, and 18 a wiring material for connecting the cover 17 to the airtight container 10. It is a clamp that stops the movement.

In the above configuration, the installation procedure will be described next. First, the terminal case 12, the overload protection device 13, and the operating capacitor 14 are wired in advance using the wiring material 15. Next, the operating capacitor 14t is housed in the capacitor case 716, and the capacitor case 16 is fixed to a system base (not shown). After mounting the rotary compressor on the system base, the terminal case 12 is engaged with the glass terminal/L/11, the overload protection device 13 is installed inside the cover 17, and while the cover 17 is pressurized into the closed container 1o, This is completed by locking the closed container 10 with the clamp 18.

Problems to be Solved by the Invention However, with the above configuration, the above-mentioned regular and main operations are divided into two, and the work after the rotary compressor is mounted on the system base is usually carried out during the assembly line. The sex is extremely bad. Further, since the capacitor case 14 and long wiring materials are required to connect the capacitor case 14 and the terminal case, this increases the cost.

In order to solve these problems, the operation capacitor 14
However, in the case of a rotary compressor, the airtight container 10 has a surface temperature of 10
The temperature often exceeds 0° C., and the operation capacitor 14 is required to have extremely high heat resistance, making it very expensive.

In view of the above problems, the present invention provides a hermetic electric compressor that is easy to work with and is inexpensive.

Means for Solving the Problems In order to solve the above problems, the hermetic electric compressor of the present invention includes a box-shaped cover having an open end, a box-shaped cover that fits into the open end, and a glass terminal. The base has an integrated bag-shaped terminal storage chamber that engages with the terminal storage chamber, and an operating capacitor stored in the terminal storage chamber on the side opposite to the glass terminal.

According to the present invention, with the above-described configuration, the bag-shaped terminal storage chamber has an air insulation layer therein, so that a heat insulation effect is exhibited, and a normal operation capacitor can be integrated as an electrical component.

EXAMPLE Hereinafter, 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 FIG. 1, 2o is a bag-shaped cover with an open end, and has a plurality of locking holes 20a. 21 is a base that fits into the open end of the cover 20, has a locking claw 2111 corresponding to the locking hole 20a on the outer periphery, and has a glass terminal /l/1
It concatenates to 1. A bag-shaped terminal storage chamber 21b and, adjacent thereto, a capacitor base portion 21c to which a capacitor is attached.
and are integrated. Reference numeral 22 denotes an operating capacitor, which has leg portions 22a that are attached to the capacitor base portion 21. 2
3 is a screw for fixing the operating capacitor 22 to the capacitor base, and 24 is the operating capacitor 22 and the terminal storage chamber 21b.
It is a wiring material for wiring. In this embodiment, the overload protection device is built into the closed container 1Q.

In the above configuration, the installation procedure will be described next. First, in advance, wire the operating capacitor 22 and the terminal storage chamber 21b using the wiring material 24, and pass the leg portion 22 & through the screw 23.
The operating capacitor 22 is fixed to the capacitor base portion 21c. Next, the base 21 and the cover 20 are integrated by engaging the locking claw 21a with the locking hole 20a. And finally, this integrated thing is a glass terminal/L/
11 to complete the installation. Here, usually
This last step is carried out during the assembly line, but is extremely easy as it is simply a matter of pushing it in.

As mentioned above, the main work only needs to be done once.
In addition, a capacitor case and long wiring materials are not required, making it extremely economical. Furthermore, the last step mentioned above is simply pushing the integrated electrical components into the glass terminal/l/11, and since it is usually carried out during the assembly line, the effect of improving workability is very high. In addition, due to the above-described configuration, the terminal storage chamber 21b is located between the airtight container 1o and the operating capacitor 22, but since this terminal storage chamber 21b has an air insulation layer inside and exhibits a heat insulation effect, the operating capacitor 22 may be a commonly used inexpensive one.

Effects of the Invention As described above, the present invention includes a base that integrates a box-shaped cover having an open end and a bag-shaped terminal storage chamber that fits into the open end and engages with the glass terminal. By providing an operating capacitor stored in the terminal storage chamber on the side opposite to the glass terminal, an electrical component for a hermetic electric compressor with good workability and low cost is possible.

[Brief explanation of drawings]

10...Airtight container, 11...Glass terminal, 2o...Cover, 21...
Base, 21b...Terminal storage chamber, 22...
...Operation capacitor. Diagram?

Claims (1)

[Claims] A base that integrates a box-shaped cover that is attached to a glass terminal provided in a closed container and has an open end, and a bag-shaped terminal storage chamber that fits into the open end and engages with the glass terminal; A hermetic electric compressor comprising an operating capacitor housed on the side opposite to the glass terminal of the terminal housing chamber.