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Washing machine, conductivity sensor in washing machine, and controlling method of the same

A conductivity sensor, washing machine technology, applied in the control device of washing machine, other washing machines, circuits, etc., can solve the problems of reducing washing efficiency, adjusting washing machine, not raising, etc., to improve washing efficiency, prevent misoperation, and improve reliability. Effect

Inactive Publication Date: 2005-10-19
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the prior art does not propose a method for adjusting the amount of detergent and water in the washing machine according to the hardness of the washing water
Although water hardness varies from region to region, each region uses the same method of adding detergent and water, which is one of the factors that reduce washing efficiency

Method used

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  • Washing machine, conductivity sensor in washing machine, and controlling method of the same
  • Washing machine, conductivity sensor in washing machine, and controlling method of the same
  • Washing machine, conductivity sensor in washing machine, and controlling method of the same

Examples

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Effect test

no. 1 example

[0049] refer to Figure 1 to Figure 3 The first embodiment of the present invention will be described in detail.

[0050] figure 1 is a sectional view of the washing machine according to the first embodiment of the present invention.

[0051] refer to figure 1, the washing machine according to the present invention comprises: a casing 1 forming an outer shell; an outer tub 2 firmly suspended in the casing 1 by a plurality of suspending members 10 for containing washing water; The lower part of 10 is a shock absorber 14 to reduce the vibration of the outer cylinder 2; one is rotatably installed inside the outer cylinder 2 for receiving the laundry to be washed and the inner cylinder 3 provided by the water supply valve for washing water; one is rotatably installed The lower part of the inner cylinder 3 is an agitator 7 for agitating the flow of washing water; a drive motor 4 driven by an external power supply; a drive shaft 5 arranged in the middle of the drive motor 4; a dr...

no. 2 example

[0069] Refer below Figure 4 to Figure 6 The second embodiment of the present invention will be described in detail.

[0070] Figure 4 is a cross-sectional view of a conductivity sensor and its mounting structure according to a second embodiment of the present invention.

[0071] refer to Figure 4 , the conductivity sensor according to the second embodiment of the present invention includes a pair of electrodes 91, an upper protection member 21, a lower protection member 31, a sealing member 41, an upper fixing portion 211 and a lower fixing portion 311, these members The same as in the first embodiment described above. The difference is that the conductivity sensor further includes a connector 52 protruding downward from the lower protective member 31, and a receiver 62 formed in the connector 52 and fixed to the lower portion of each electrode to apply current, wherein each electrode The lower part forms a round rod shape.

[0072] Figure 5 is a perspective view of ...

no. 3 example

[0076] Refer below Figure 7 and Figure 8 A third embodiment of the present invention will be described in detail. The third embodiment provides a structure that can prevent the misoperation of the electrode 91, which may be caused by foreign substances entering the gas chamber. The air chamber is in the shape of a hollow rod extending up and down. Foreign matter, such as lint or dirt contained in the wash water, may additionally be introduced and accumulate in the interior of the air chamber. If a foreign substance intervenes between the electrodes, the conductivity is irregularly changed, so that the amount of current cannot be accurately detected. For example, if foreign substances get between the electrodes, they act as a conductor or insulator, making it impossible to accurately measure conductivity. Therefore, in this embodiment, means for preventing the introduction of foreign substances is further provided between the electrodes.

[0077] Figure 7 is a cross-se...

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PUM

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Abstract

There are provided a conductivity sensor of a washing water, an installation construction of the conductivity sensor, and a method for controlling the washing machine, which are capable of controlling the washing machine by calculating a hardness of a washing water from a measured conductivity of the washing water.

Description

technical field [0001] The present invention relates to a washing machine capable of measuring the hardness of washing water, its conductivity sensor and its control method, and in particular to a washing machine with a conductivity sensor which can apply different control methods according to the hardness of washing water to improve washing efficiency , its conductivity sensor and its control method. Background technique [0002] Generally, various sensors are installed in the washing machine to detect washing conditions necessary for several washing operations. The washing machine is properly driven according to the detected washing conditions to obtain the maximum washing effect. As for the sensors of the conventional washing machine, a sensor for detecting the amount of washing water entering a washing tub and a sensor for detecting the temperature of water for drying laundry have been proposed and used. [0003] At this time, one of factors determining the characteris...

Claims

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Application Information

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IPC IPC(8): D06F33/32D06F34/22D06F34/24D06F39/04G01N27/10H01R13/52
CPCD06F39/045G01N27/10H01R13/521D06F2202/02D06F2202/04D06F33/02D06F39/004D06F34/22D06F34/24D06F2103/20D06F2105/52D06F33/32
Inventor 朴容奭宋永汉
Owner LG ELECTRONICS INC
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