JPS636471Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to improvements in hermetic rotary compressors.

(b) Prior art A conventional example will be explained based on FIGS. 1 and 2. Reference numeral 1 is a cylindrical sealed case having a top plate 2 at the top and a bottom plate 3 at the bottom. The electric motor section 4 and the rotary compressor section 5 are press-fitted with the axis parallel to the center axis of the case, and the side wall 6 of the sealed case 1 has a refrigerant suction pipe 7, a discharge pipe 8, and a power supply for the electric motor section 4. Terminal 9 is fixed. The rotary compressor section 5 has a substantially circular planar shape, and has recesses 10 at appropriate locations for storing electrical components.
A cylinder block 11 with The rotational force of 4 is transmitted to cylinder 1.
a roller 18 that rotates inside the cylinder 2; and a vane that is fitted into the cylinder 12 so as to be in contact with the roller 18 side by a spring 19 in order to be in pressure contact with the circumferential surface of the roller and to divide the inside of the cylinder 12 into a suction side and a discharge side. It consists of 20. The upper frame 13 on which the discharge muffler 21 is attached is connected to the rotor 22 and winding 2 of the electric motor section 4.
3 and the cylinder block 11. A terminal 9 for supplying power to the motor section 4, which is installed through the side wall 6 of the sealed case 1, connects the winding 23 of this motor section and the cylinder block 1.
1 recess 10 for storing electrical components and sealed case 1
It is arranged in a space surrounded by the bottom plate 3 of.

In this structure, the discharge muffler 2 of the rotary compressor section 5
The upper frame 13 on which the rotary compressor 1 is attached is placed in a space surrounded by the rotor 22, winding 23, and cylinder block 11 of the electric motor section 4, so the electric motor section 4 and the rotary compressor section 5 are simply connected vertically. The overall height of the compressor can be lowered compared to the case where the electric motor section 4
Since a sufficient insulation distance must be maintained between the winding 23 of the compressor and the cylinder block 11, there is a problem in that the overall height of the compressor cannot be made sufficiently low.

(c) Purpose In view of the above points, the purpose of this invention is to lower the overall height of the compressor by arranging a cylinder block with a circular planar shape in the space between the rotor and the winding of the motor section. shall be.

(D) Structure The basic structure of the present invention is that an electric motor section and a rotary compressor section driven by the electric motor section are housed in a cylindrical sealed case, and the cylinder block of the rotary compressor section has a planar shape. The frame has a circular shape and is arranged in the space formed by the rotor and windings of the electric motor part, and the frame that holds the cylinder block has a recess formed in the side wall for storing electrical components, and a sealed case. A terminal for supplying power to the electric motor unit, which is installed through the side wall of the electric motor unit, is arranged in a space formed by a recessed part of the motor winding, a cylinder block, and a recess for storing electrical components. It is something.

With this configuration, the cylinder block, which has a circular planar shape, is placed in the space formed by the rotor and windings of the motor section, and the power supply terminal, which is installed through the side wall of the sealed case, is Since it is placed in the space formed by the recess formed in the side wall of the frame for storing electrical components and the recessed part of the motor winding, a sufficient insulation distance can be maintained between the motor winding and other parts. The gap between the rotor of the electric motor section and the upper frame of the rotary compressor section is minimized, and the overall height of the compressor can be reduced.

(E) Embodiment The present invention will be explained based on the embodiment shown in FIGS. 3 to 5. Reference numeral 30 indicates a bottom plate 33 having a top plate 31 on the upper part and auxiliary ribs 32, 32, . . . on the lower part.
It is a cylindrical sealed case with a cylindrical sealed case, and an electric motor part 34 and a rotary compressor part 35 are press-fitted inside this sealed case with the axis parallel to the central axis of the case,
Further, a terminal 39 for supplying power to the refrigerant suction pipe 37, the discharge pipe 38, and the electric motor section 34 is fixed to the side wall 36 of the sealed case 30. The rotary compressor section 35 includes a cylinder block 40 having a circular planar shape.
Then, the recess 4 for storing electrical components is press-fitted into the inside of the airtight case 30 that holds the upper frame 42 and the cylinder block 40, which are attached to the end face of the cylinder 41 formed in the cylinder block.
3 and a rotating shaft 47 that is pivotally supported by bearings 45 and 46 of these frames.
The rotational force of the electric motor section 34 is transmitted through the roller 48, which rotates inside the cylinder 41, and the roller 48 is in pressure contact with the circumferential surface of this roller to divide the inside of the cylinder 41 into a suction side and a discharge side. Tute roller 4
The vane 50 is fitted so as to come into contact with the 8 side. The cylinder block 40 of the rotary compressor section 35 is arranged in a space surrounded by the rotor 51 and windings 52 of the motor section 34 and the lower frame 44. A power supply terminal 39 installed through the side wall 36 of the sealed case 30 is formed by a main winding 53 and an auxiliary winding 54, which are divided into left and right parts when the coil end of the winding 52 of the motor section 34 is shaped. It is arranged in a space surrounded by the recessed part 55, the cylinder block 40, and the recess 43 of the lower frame 44 for storing electrical components.

Therefore, the cylinder block 4 has a circular planar shape.
0 is arranged in the space formed by the rotor 51 and the winding 52 of the electric motor section 34, and is located in the closed case 30.
The power supply terminal 39 that is attached to the side wall 36 of the main winding 5 of the winding 52 of the motor section 34
3 and the auxiliary winding 54.
, cylinder block 40, and lower frame 4
4, the winding 52 of the electric motor section 34
A sufficient insulation distance between the rotor 51 and other parts can be secured, and the gap between the rotor 51 of the motor section and the upper frame 42 of the rotary compressor section 35 can be minimized, and the overall height of the compressor can be reduced. Further, since the substantially circular lower frame 44 is press-fitted into the sealed case 30, the rigidity of this sealed case is strengthened.

(F) Effect As described above, the present invention provides a hermetic rotary compressor in which an electric motor section and a rotary compressor section driven by the electric motor section are housed in a cylindrical closed case.
The cylinder block of the rotary compressor section is arranged in a space formed by the rotor and windings of the electric motor section,
The frame that holds the cylinder block is tightly fixed to the sealed case by press-fitting, etc., and a recess for storing electrical components is formed in the side wall. Since the power supply terminal is placed in the space formed by the recessed part of the motor's winding, the cylinder block, and the recess for storing electrical components, the space formed by the motor's rotor and winding is The cylinder block is arranged in a rational manner, and the power supply terminal is rationally arranged in the space formed by the concave part of the winding and the recess in the frame, and the insulation distance between the winding and other parts is maintained sufficiently. The overall height can be lowered. Further, the frame is tightly fixed to the closed case by press fitting or the like, and the rigidity of the closed case is strengthened, so that noise can be greatly reduced.

[Brief explanation of the drawing]

1 and 2 show a conventional example, FIG. 1 is a longitudinal cross-sectional view of a rotary compressor, FIG. 2 is a cross-sectional view of a rotary compressor, and FIGS. 3 to 5 show the present invention. FIG. 3 is a longitudinal sectional view of the rotary compressor, FIG. 4 is a cross-sectional view of the rotary compressor, and FIG. 5 is a front view of main parts schematically showing the positional relationship between the electric motor section and the terminal. 30... Sealed case, 34... Electric motor section, 35
... Rotary compressor section, 39 ... Power supply terminal, 40 ... Cylinder block, 42, 44 ...
Frame, 43... Recess for storing electrical components, 51
...rotor, 52 ... winding, 55 ... recessed part.

Claims (1)

[Scope of utility model registration request] In a hermetic rotary compressor that houses an electric motor section and a rotary compressor section driven by the electric motor section in a cylindrical sealed case, the cylinder block of the rotary compressor section is connected to the rotor and windings of the electric motor section. The frame that holds the cylinder block is fixed tightly to the sealed case by press-fitting, etc., and a recess for storing electrical components is formed in the side wall, and the frame that holds the cylinder block is placed in the space formed by the A terminal for supplying power to the electric motor, which is installed through the motor, is arranged in a space formed by a recess in the motor winding, the cylinder block, and a recess in the frame for storing electrical components. Closed rotary compressor.