Drum washing machine

A drum-type washing machine and washing machine technology, applied to other washing machines, washing machines with containers, washing machine control devices, etc., can solve the problems of easy damage and shrinkage of clothes, and achieve the advantages of prolonging washing time, shortening washing time, and reducing shrinkage Effect

Active Publication Date: 2007-03-14
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, in the case of less laundry, it is not necessary to carry out long

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0041] Fig. 1 is a longitudinal sectional view of a drum-type washing machine in the first embodiment of the present invention, Fig. 2 is a control circuit diagram of the drum-type washing machine (a part of which is drawn as a block diagram), and Fig. 3 is an input setting of the drum-type washing machine The enlarged front view of the device and the display device, Fig. 4 is a schematic operation flowchart of the drum-type washing machine, and Fig. 5 is a high-temperature washing process diagram of the drum-type washing machine.

[0042] As shown in FIG. 1 , the rotary drum 24 is in the shape of a bottomed cylinder with many water holes 25 formed on its entire peripheral wall, and the rotary drum 24 is rotatably installed in a tub 26 . The rotation center of the rotary drum 24 is provided with a substantially oblique rotation shaft (rotation center shaft) 27 , and the axis direction of the rotary drum 24 is inclined downward from the front side to the rear side. Motor 28 is ...

Embodiment approach 2

[0068] Fig. 6 is a schematic operation flowchart of the front-loading washing machine in the second embodiment of the present invention.

[0069] In this embodiment, in the first agitation process when performing the high-temperature washing process, the control device 44 sets a low agitation time with a relatively low agitation time (for example, stirring for 7 seconds and stopping for 23 seconds), and a lower than this low agitation. Stirring and high stirring with a relatively high stirring time (for example, stirring for 20 seconds and stopping for 4 seconds) are combined to form a stirring cycle, and such a cycle is repeated continuously. In this way, the problems of insufficient washing agitation and low water temperature detection accuracy caused by the low actual agitation ratio of the rotating drum in the first half of the first agitation stroke can be solved. Since other configurations are the same as those in Embodiment 1, only the same symbols are assigned here, an...

Embodiment approach 3

[0079] Fig. 7 is a schematic operation flowchart of the front-loading washing machine according to the third embodiment of the present invention.

[0080] In the present embodiment, the control device 44 performs control as follows: when the first predetermined time is detected in the first agitation process of the high-temperature washing process, and when the second predetermined time is detected in the second agitation process Next, control to enter the next stroke. This embodiment relates to control when a certain failure occurs in a heating device or a temperature detection device. Since the other configurations are the same as those in Embodiments 1 and 2, only the same symbols are assigned here, and repeated description thereof will be omitted.

[0081] The operation in the above constitution will be described below. In FIG. 7 , since steps 300 to 308 are the same as steps 100 to 108 in Embodiment 1, descriptions thereof are also omitted here.

[0082] In step 309 , ...

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PUM

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Abstract

The invention provides a drum type washing machine capable of reducing the defective driving caused by the rise of the temperature of a motor in a high-temperature washing process, improving and adjusting the washing performance and disinfectant performance according to the quantity of the laundry and temperature of fed water, and reducing the damage and shrinkage of fabrics. The washing machine has the high-temperature washing process for heating washing water at least at a first prescribed temperature T1 by controlling a heater (41) for washing. The high-temperature washing process is divided into a first agitation process in the first half and a second agitation process in the latter half. The first agitation process is a process to be continued till the fed washing water is heated to a second prescribed temperature T2 set lower than the first prescribed temperature T1, and the second agitation process is a process to be continued till the washing water is heated from the second prescribed temperature T2 to the higher first prescribed temperature T1. The ratio of period of time for driving a motor (28) in the first agitation process is set lower than the ratio in the second agitation process.

Description

technical field [0001] The invention relates to a drum-type washing machine in which washing, rinsing, dehydration and other operations are performed in a rotating drum whose rotation central axis is in a horizontal direction or a substantially inclined direction. Background technique [0002] In the existing drum-type washing machine, in order to improve the cleaning effect of the clothes or to kill the bacteria attached to the clothes, there is generally a function of heating the washing water to a high temperature (for an example, refer to Japanese Patent Laid-Open Publication No. Hei 10-263285). [0003] A conventional drum type washing machine described in the above reference is shown in FIG. 9 . The composition thereof is described below. [0004] As shown in FIG. 9 , many water holes 2 are provided on the entire outer peripheral wall of the rotary drum 1 , and the rotary drum 1 is set in the outer tub 3 in a rotatable manner. One end of the rotating shaft 4 is subs...

Claims

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Application Information

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IPC IPC(8): D06F23/00D06F37/00D06F33/00
Inventor 皆吉裕子松冈真二
Owner PANASONIC CORP
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