KR20040040712A - Hermetic rotary compressor - Google Patents

Abstract

PURPOSE: A hermetic rotary compressor is provided to reduce the number of parts, and prevent end plates from being transformed in assembling or transporting the end plates, thereby improving the performance and the reliability. CONSTITUTION: A top end plate(132) is combined with an upper part of a rotator core(131) for supporting the rotator core, and has a balance weight(134) integratedly formed with a top side. A bottom end plate(133) is combined with a lower part of the rotator core for supporting the rotator core, and has another balance weight(135) integratedly formed with a bottom surface.

Description

Hermetic rotary compressors {HERMETIC ROTARY COMPRESSOR}

The present invention relates to a hermetic rotary compressor, and more particularly, to a hermetic rotary compressor which improves assembly by reducing the number of parts and minimizes deformation of the end plate.

In general, a closed rotary compressor applied to an air conditioner is eccentrically coupled to a crankshaft integrated with a power mechanism unit, and a rolling piston is eccentrically coupled, and the rolling piston sucks and discharges a refrigerant gas while rotating in a circular cylinder.

1 and 2 show the structure of a conventional hermetic rotary compressor, FIG. 1 is a side view of the rotary compressor, and FIG. 2 is a perspective view of the rotor of FIG.

As shown in FIG. 1, the conventional hermetic rotary compressor includes a stator 2 and a rotor which are electric motor parts inside a casing 1 in which a predetermined amount of oil is filled and a suction pipe SP and a discharge pipe DP are provided. The electron 30 is provided, and the crankshaft 4 is press-fitted in the center of the rotor 30 among these, and the compression mechanism part is provided in the lower part of the crankshaft 4.

The compressor section is fixed to the inner circumferential surface of the casing (1) and the circular cylinder (5) in communication with the suction pipe (SP), the upper bearing is in close contact with both sides of the cylinder (5) and the crankshaft (4) through ( 6A) and the lower bearing 6B, the rolling piston 7 which is eccentrically rotated in the cylinder 5 while being rotated and rotated by the crankshaft 4, and the rolling piston is pressed against the outer circumferential surface of the rolling piston 7 It comprises a vane (not shown) for dividing the cylinder (5) into a suction space and a compression space while performing a linear movement during the turning movement of (7).

The oil passage 4a is formed to penetrate in the axial direction long inside the crank shaft 4, and an oil feeder (not shown) for sucking up the oil filled in the casing 1 at the lower end of the oil passage 4a. It is installed.

2 is a perspective view of the rotor.

The rotor 30 has a core 31, an upper end plate 32 supporting the core 31, a lower end plate 33, the upper end plate 32, and the lower end plate ( And a balance weight (34, 35) coupled to the 33.

The balance weights 34 and 35 are riveted to the end plates 32 and 33.

In addition, the oil separation disk 36 is coupled to the upper side of the balance weight 34 coupled to the upper side of the upper end plate 32.

The end plate 33 is made of a metal such as aluminum.

The operation of the conventional hermetic rotary compressor configured as described above is as follows.

When power is applied to the stator 2, the rotor 30 rotates inside the stator 2 according to the application of the power, and the rolling crank 7 rotates with the crankshaft 4. In this cylinder 5, the eccentric rotation is performed, and along with the eccentric rotation of the rolling piston 7, the refrigerant gas is sucked into the suction space of the cylinder 5, and is continuously compressed to a predetermined pressure, and the cylinder 5 At the moment when the pressure of the compression space of the pressure crosses the critical pressure and becomes higher than the pressure in the casing 1, the discharge valve 9 mounted on the upper bearing 6A is opened, and the compressed gas flows from the compression space into the casing 1. The discharge gas is moved upwardly through a gap between the casing 1 and the stator 2 or a gap between the stator 2 and the rotor 30 and passes through the discharge pipe DP to provide a refrigeration cycle system. Is discharged.

At this time, the oil filled in the casing (1) is sucked up to the upper end by the oil feeder (not shown) and the oil flow path (4a) of the crankshaft (4) and scattered while lubricating the sliding parts at the same time the electric mechanism part Was cooled and again flowed to the bottom of the casing (1).

However, in the conventional hermetic rotary compressor, the end plates 32 and 33 are separated from the balance weights 34 and 35 and the oil separation disk 36 so that deformation may easily occur during movement or assembly. This deformation of the end plates 32 and 33 has a problem that the deformation, performance and reliability of the entire rotor are poor.

The present invention has been made to solve the above problems, an object of the present invention is to provide a hermetic rotary compressor to prevent deformation of the end plate to improve the performance, reliability of the rotor.

1 and 2 show the structure of a conventional hermetic rotary compressor,

1 is a side view of a rotary compressor

Figure 2 is a perspective view of the rotor of Figure 1

Figure 3 shows the structure of an embodiment of the present invention, an exploded perspective view of the rotor

** Description of the symbols for the main parts of the drawings **

130: rotor 131: core

132: top end plate 133: bottom end plate

134, 135: balance weight 136: oil-separated disc

In order to achieve the object described above, the present invention is coupled to an upper portion of the rotor core to support the core, and an upper end plate having a balance weight integrally formed on an upper surface thereof, and coupled to a lower portion of the core to form the core. The present invention provides a hermetically sealed rotary compressor comprising a lower end plate having a lower end and a balance weight integrally formed thereon.

On the other hand, the present invention is coupled to the upper portion of the rotor core to support the core, the upper end plate formed integrally with the balance weight and the oil separation disk on the upper surface, and coupled to the lower portion of the core to support the core, A balance weight may be formed integrally with the bottom end plate.

The upper end plate and the lower end plate may be made of brass.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, in describing the present invention, a detailed description of known functions or configurations will be omitted in order not to disturb the gist of the present invention.

In addition, the same reference numerals are given to the same and the same components as those described above, and detailed description thereof will be omitted.

Since the features of one embodiment of the present invention is in the structure of the rotor, it will be described below.

Figure 3 shows the structure of one embodiment of the present invention, an exploded perspective view of the rotor.

The rotor 130 has a rotor core 131 formed by stacking iron cores, an upper end plate 132 coupled to an upper portion of the core 131 to support the rotor core 131, and the core ( A lower end plate 133 coupled to a lower portion of the 133 to support the rotor stack core, a balance weight 134 and 135 coupled to the upper end plate 132 and the lower end plate 133; It is configured to include an oil separation disk 136 is installed on the upper surface of the balance weight 134.

The upper end plate 132 is formed integrally with the balance weight 134 and the oil separation disk 136 located on the upper surface.

The lower end plate 133 is integrally formed with the balance weight 135 on the lower surface.

The end plates 132 and 133, the balance weights 134 and 135, and the oil separation disk are preferably made of brass. This is because brass is resistant to heat deformation when shrinking for assembling with the crankshaft 4.

As described above, in the present invention, the end plates 132 and 133 are integrally formed with the balance weights 134 and 135 and the oil separation disk 136, thereby reducing the number of parts and improving the assemblability. It is structurally strong to prevent deformation of the end plate during assembly or transportation, thereby improving the performance and reliability of the compressor.

In the above, the preferred embodiment of the present invention has been described by way of example, but the scope of the present invention is not limited to such specific embodiments, and may be appropriately changed within the scope described in the utility model registration claims.

The present invention provides a hermetic rotary compressor having improved performance and reliability by reducing the number of parts, improving assembly performance, and preventing deformation of the end plate during assembly or transportation.

Claims (3)

An upper end plate coupled to an upper portion of the rotor core to support the core and having a balance weight integrally formed on the upper surface; A lower end plate coupled to a lower portion of the core to support the core and having a balance weight integrally formed on the lower surface; Hermetic rotary compressor, characterized in that configured to include. An upper end plate coupled to an upper portion of the rotor core to support the core and having a balance weight and an oil separation disk integrally formed thereon; A lower end plate coupled to a lower portion of the core to support the core and having a balance weight integrally formed on the lower surface; Hermetic rotary compressor, characterized in that configured to include. The method according to claim 1 or 2, The upper end plate and the lower end plate is a sealed rotary compressor, characterized in that formed of brass.