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Refrigerator

A technology for refrigerators and induction motors, which is applied in household refrigerators, refrigerators/freezers, household refrigeration devices, etc., can solve problems such as failure to popularize and change electronic control devices.

Inactive Publication Date: 2009-09-23
KK TOSHIBA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in order to control with the inverter as described above, it is necessary to change the electronic control device significantly, and it has not been widely used in foreign countries.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0033] according to figure 1 and figure 2 A refrigerator according to a first embodiment of the present invention will be described.

[0034] Refrigerator 10 of the present embodiment has two-phase induction motor 14 for driving compressor 12 , and its rotation is controlled by control device 15 . The induction motor 14 has a main winding and an auxiliary winding, and also has an auxiliary winding terminal A, a main winding terminal B, and a common terminal C.

[0035] (1) Structure of the control device 15

[0036] according to figure 1 The configuration of the control device 15 for driving the induction motor 14 will be described.

[0037] The control device 15 has a control unit 16 and an inverter unit 18 .

[0038] The control unit 16 is driven by a commercial power supply 20 , and is connected with an in-box sensor 22 , a fan 24 , and a door switch 26 . The AC voltage output from the control unit 16 is input to the inverter unit 18 . The inverter unit 18 is cons...

no. 2 Embodiment approach

[0050] Next, according to image 3 as well as Figure 4 The refrigerator 10 of 2nd Embodiment is demonstrated. This embodiment differs from the first embodiment in that the motor control circuit 28A does not store a control pattern, but applies a control signal 34 from the control unit 16 instead, and controls the induction motor 14 by the control signal 34 .

[0051] Even in this embodiment, by connecting the inverter unit 18 only between the conventional control unit 16 and the induction motor 14, even the conventional induction motor 14 can perform energy-saving operation.

[0052] Hereinafter, each control method of the control device 15A of the second embodiment will be sequentially described.

[0053] (1) The first control method

[0054] In the first control method, the temperature inside the cabinet is detected by the inside sensor 22 , and when the inside of the cabinet becomes cold, the inverter unit 18 is commanded to reduce the rotational speed based on the cont...

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PUM

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Abstract

The invention provides a refrigerator which can be controlled simply by an inverter. In an inverter part (18) driving a compressor (12) of the refrigerator, the inverter part (18) is controlled through a predetermined starting mode.

Description

technical field [0001] The present invention relates to a refrigerator equipped with a compressor driven by an induction motor. Background technique [0002] Conventionally, an induction motor is used to drive a compressor of a refrigerator. according to Figure 5 A conventional circuit configuration for controlling this induction motor will be described. [0003] Such as Figure 5 As shown, the induction motor 100 is driven by the control device 102 . The control device 102 is powered by a commercial power supply 104 . In addition, an interior sensor 106 for measuring the interior temperature of the refrigerator, a fan 108 for blowing cool air into the interior of the refrigerator, and a door switch 110 for detecting opening and closing of the door are connected to the control device 102 . [0004] In addition, the induction motor 100 is a two-phase motor composed of a main winding and an auxiliary winding, and an overload relay 112 is connected between the common termin...

Claims

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Application Information

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IPC IPC(8): F25D11/00F25D29/00
CPCY02B40/32Y02B40/00
Inventor 丸谷裕树
Owner KK TOSHIBA