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Compressors and motor-compressor units for use in cooling systems

A cooling system and compressor technology, applied in the field of compressors, can solve problems that hinder the competitiveness of cooling systems, high fixed cost investment, etc.

Active Publication Date: 2017-09-22
EMPRESA BRASILEIRA DE COMPRESSORES SA (EMBRACO)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the use of these motors creates the need for specific production lines for their construction, resulting in high fixed cost investments in equipment and training, which in turn often hinders competitiveness among cooling systems using these motors due to the need to recover these costs

Method used

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  • Compressors and motor-compressor units for use in cooling systems
  • Compressors and motor-compressor units for use in cooling systems
  • Compressors and motor-compressor units for use in cooling systems

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] Coil connection

[0022] as available from figure 1 with Image 6 As seen in , the prior art uses the construction of the coils in a specific way, using a first coil 1 , a second coil 2 and a third coil 3 , with a Y-connection for regular operation of the motor 13 of the compressor. Thus, the first phase 4a, the second phase 4b and the third phase 4c are connected at points of the system. Therefore, when more current and torque is required (typically for starter motors), preferably the controller 11 immediately modifies the organization of the connections to transform the system into a delta connection, as in figure 2 shown in the example. Again, the phases are connected at the points of the triangle.

[0023] image 3 with Image 6 A preferred connection of the invention is shown, namely a T-connection with 3 coils. This type of connection uses a main coil 5 which is divided into a first part 5a and a second part 5b. This main coil 5 is energized by an inverte...

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PUM

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Abstract

The present invention relates to a compressor and a motor-compressor unit for use in a cooling system, in particular a compressor for use in a cooling system is described, said compressor comprising at least: an electric controller; said electric controller controls and is capable of controlling an inverter of the motor; and a variable speed brushless motor comprising a T-connected coil which, in addition to a secondary coil (6), also having a primary coil (5) having a first part (5a) connected to a second part (5b), a secondary coil connected to the junction of the first part (5a) and the second part (5b), The motor also includes distributed windings having at least one pair of connected poles capable of providing energy to the rotor.

Description

technical field [0001] Here the invention relates to a compressor comprising a variable speed motor. The motor also includes a coil having distributed windings and T-coil connections. Background technique [0002] Cooling systems for residential or commercial buildings typically use compressors with electric motors for temperature control. In many of these systems, the demands on the compressor (and thus the motor) vary greatly. Accordingly, several methods for controlling and configuring motors and compressors have been developed. [0003] In view of this, the motors of compressors commonly used, single-phase or two-phase, are of two different constructions. In both motors, rotational motion is produced by magnetic forces in the stator and rotor. The rotor requires torque to start its rotation, which is generated by the magnetic force developed between the poles of the rotor and stator. Attractive or repulsive forces developed between the stator and rotor "pull" or "pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B35/04H02K29/00H02K3/04
Inventor M·W·佩赖拉T·吉塞尔
Owner EMPRESA BRASILEIRA DE COMPRESSORES SA (EMBRACO)