Drum washing machine

A drum-type washing machine and drum technology, which can be applied to other washing machines, washing machines with containers, washing devices, etc., can solve problems such as failures, temperature rise of electronic components, etc.
CN1928196AInactive Publication Date: 2007-03-14PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PANASONIC CORP
Publication Date
2007-03-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a drum type washing machine suppressing electric current flowing through a motor when the number of poles of the motor is switched in spin-drying. When the number of poles of the motor is switched to change its rotational frequency, application of the electric current is started from a minimum conduction angle for driving the motor to suppress the electric current flowing through the motor as well as a rise in temperature of the motor, a power switching means, or the like.
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Description

technical field

[0001] The invention provides a drum type washing machine, which performs washing, rinsing, and dehydration procedures by rotating and driving a drum that receives laundry. Background technique

[0002] Currently, such a washing machine is configured such that a drum that receives laundry and is rotatable about a horizontal rotation axis is driven by two types of motors having different numbers of poles, and the rotational speed is controlled by switching between the two types of motors. The first motor is a high-torque motor with a large number of motor poles (for example: 16 poles), which rotates at a low speed (for example, 120r / min) in washing programs and rinsing programs, and can rotate laundry with a heavy weight in water. The second motor The number of poles of the motor is small (for example, 2 poles), and it can rotate at a high speed (for example: 800r / min) during the dehydration process. These two motors are switched to perform from washing to ri...

Claims

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