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Compressor for refrigerator

A refrigerator compressor, compression pump technology, applied in the direction of compressors, irreversible cycle compressors, refrigerators, etc., can solve problems such as interference of household appliances, low work efficiency, large power grid loss, etc., and achieve the effect of improving the cooling speed.

Inactive Publication Date: 2004-09-22
科西亚数码电气(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional refrigerator refrigeration starts with a fixed-speed compressor at full pressure, and the starting current is very large, which is 4 to 6 times the rated operating current. Large, low work efficiency, waste of electricity
In order to improve the comprehensive performance of the refrigerator, only the speed control of the compressor motor is carried out, and the energy-saving mode is operated. Therefore, at present, AC inverter compressors have been used in refrigerators. The working efficiency of this refrigerator compressor has been improved, but there is a power factor. Low disadvantage, because its power factor can only reach 0.6.~0.7, the power grid loss is large, and because the speed and pole number of the AC motor are mutually restricted, its maximum speed is lower than 3000 rpm, so it affects the refrigerator. Improved cooling speed and precision

Method used

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  • Compressor for refrigerator
  • Compressor for refrigerator
  • Compressor for refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 ( figure 1 ):

[0029] The permanent magnet brushless DC motor used in this example includes a crankshaft 8, rotor cores 5 and 3 fixed on the crankshaft, tile-shaped magnetic steel 4 installed outside the rotor core, stator core 2, embedded in the stator core The stator winding 1 in the slot, the tile-shaped magnetic steel is covered with a stainless steel collar 9 that fixes it with the rotor core, and the tile-shaped magnetic steel adopts anisotropic ferrite whose magnetization direction is radially oriented Permanent magnets or NdFeB permanent magnets, the stator windings are three-phase windings, the stator three-phase windings are connected to a DC frequency conversion circuit, the rotor cores 3 and 5 are laminated silicon steel sheets, and semicircular The eccentric balance weights 6 and 10 are provided with a non-magnetic magnetic isolation plate 7 which can prevent the axial magnetic short circuit of the magnet steel 4 between the balance weight and t...

Embodiment 2

[0032] The rotor magnets of each pole in this example are composed of a radial magnet 4 and two tangential magnets 18 located at the two axial ends of the radial magnet 4 respectively. The radial magnets form the main poles, and the tangential magnets form the auxiliary poles.

[0033] As mentioned above, the present invention is provided with balance weights 6, 10 at both axial ends of the rotor iron core, which can solve the steering transition problem of the reciprocating motion of the piston by using the rotational inertia, although a magnetic isolation plate 7 is arranged between it and the magnetic steel, However, due to the small gap between the balance weight and the end face of the magnet, it is inevitable to short-circuit the magnetic circuit of some magnets, which increases the flux leakage of the motor, reduces the flux density of the air gap, and affects the output and quick response of the motor. And the structure of the above-mentioned rotor magnetic steel of th...

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PUM

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Abstract

The high-efficiency energy-saving refrigerator compressor, including piston-type compressioin pump and motor which are sealed in same shell, is characterized by that the described motor is of permanent magnet brush-less D.C. motor, the exterior of magnetic steel of motor rotor is equipped with a stainless steel socket ring fixing the magnetic steel and rotor core into one body, and two ends of rotor core are equipped with fixed counter balance respectively, and the insulating material of motor is the material with fluorine-resisting property, and the three-phase stator winding on the stator core is connected with D.C. converter circuit. Said invented compressor advantages of quick refrigeration speed, low noise, high efficiency, saving energy, and can raise the power factor of whole system and raise notwork quality.

Description

technical field [0001] The invention belongs to a refrigerator compressor. Background technique [0002] The traditional refrigerator refrigeration starts with a fixed-speed compressor at full pressure, and the starting current is very large, which is 4 to 6 times the rated operating current. Large, low work efficiency, waste of electricity. In order to improve the comprehensive performance of the refrigerator, only the speed control of the compressor motor is carried out, and the energy-saving mode is operated. Therefore, at present, AC inverter compressors have been used in refrigerators. The working efficiency of this refrigerator compressor has been improved, but there is a power factor. Low disadvantage, because its power factor can only reach 0.6.~0.7, the power grid loss is large, and because the speed and pole number of the AC motor are mutually restricted, its maximum speed is lower than 3000 rpm, so it affects the refrigerator. Improved cooling speed and precisio...

Claims

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Application Information

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IPC IPC(8): F04B35/04F25B1/02H02K1/22
Inventor 林德芳
Owner 科西亚数码电气(深圳)有限公司
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