Novel water level sensor and washing machine

A water level sensor and a new type of technology, applied in the field of washing machines, can solve problems such as poor terminal contact, washing machine dehydration with water, affecting output frequency, etc. Effect

Active Publication Date: 2018-10-12
FOSHAN SHUNDE HAIER ELECTRIC APPLIANCES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the water level sensor is used in a humid environment, it will cause condensation on the coil and the shell, and water droplets will form on the surface, which will cause the water level sensor to form a capacitive effect, and the two terminals of the water level sensor will have a short circuit fault, which will affect the output frequency.
In addition, the terminals of the connectors are affected by the humid environment to produce a patina phenomenon, and the terminals of the water level sensor are not in good contact, so that the washing machine appears to be washed in an empty bucket or dehydrated with water.

Method used

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  • Novel water level sensor and washing machine
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  • Novel water level sensor and washing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like Figure 1 to Figure 4 As shown, a new type of water level sensor 100 is introduced in this embodiment, which includes a housing 1, an air cover 2, an adjusting screw receiving plate 3, and a rubber diaphragm 4 is installed in the chamber surrounded by the housing 1 and the air cover 2, and the rubber diaphragm 4 Divide the chamber into upper and lower chambers, the lower chamber is the air intake cavity, which communicates with the air intake nozzle 11 provided on the gas cover 2; the upper chamber is equipped with a coil unit, and the coil unit It includes a coil shaft 5 , an inductance coil 7 and at least two terminals 6 .

[0037]In this embodiment, the bottom of the gas cover 2 and the housing 1 is fixedly connected by a riveting ring 10, and a rubber diaphragm 4 is installed in the chamber surrounded by the gas cover 2 and the housing 1, and one side of the rubber diaphragm 4 is connected to the intake air. The other side of the diaphragm is connected to the ...

Embodiment 2

[0040] like Figure 1 to Figure 4 As shown, a new type of water level sensor 100 is introduced in this embodiment, which includes a housing 1, an air cover 2, and an adjusting screw receiving plate 3. A coil unit is installed in the chamber surrounded by the housing 1 and the air cover 2, and the coil unit includes The coil shaft 5, the inductance coil 7 and at least two terminals 6; the housing 1 is provided with an insertion interface 101, and the terminals 6 protrude from the insertion interface 101 of the housing 1, and are all fixed on the same side of the housing 1, and the housing 1 A baffle 102 located in the middle of adjacent terminals 6 is provided on the outer wall to separate adjacent terminals 6 , so as to ensure mutual insulation between adjacent terminals 6 and avoid short circuit of terminals 6 caused by dew condensation on housing 1 .

[0041] In this embodiment, the sockets 101 are arranged adjacent to each other in parallel and at the same height. The termi...

Embodiment 3

[0043] like Figure 1 to Figure 4 As shown, in this embodiment, the outer wall of the housing 1 is provided with a protective cover 302 located above the terminal 6, and the protective cover 302 is placed horizontally, parallel to the terminal, and extends outward. Condensation formed on the casing 1 due to high humidity will gather on the protective cover 302 , and under the action of gravity, the condensation will flow to the base 105 of the casing 1 . By setting the protective cover 302, the condensation generated by the housing 1 above the terminal 6 will not gather on the terminal 6, avoiding the copper green phenomenon of the terminal 6 affected by the humid environment, thereby avoiding the occurrence of poor contact of the terminal 6 , further avoiding the washing machine with an empty bucket or dehydration with water.

[0044] In this embodiment, the top of the housing 1 is provided with an opening, and the adjusting screw receiving plate 3 is inserted into the inter...

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PUM

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Abstract

The invention discloses a novel water level sensor which comprises a shell, an air cover and an adjusting screw bearing plate, a coil unit is arranged inside a cavity formed by the shell and the air cover, the coil unit comprises at least two terminals, the terminals stretch out from a socket of the shell, the terminals are all fixed to the same side of the shell, and a baffle located between theadjacent terminals is arranged on the outer wall of the shell so that the adjacent terminals can be separated. The invention further discloses a washing machine which is provided with any water levelsensor, the water level sensor is communicated with an air chamber of the washing machine, and the baffle located between the adjacent terminals is arranged on the shell, so that mutual insulation between the adjacent terminals is ensured, and short-circuits of the terminals caused by dew formation of the shell are avoided.

Description

technical field [0001] The invention belongs to the technical field of washing machines, and in particular relates to a novel water level sensor and a washing machine using the novel water level sensor. Background technique [0002] The water level sensor in the prior art is a type of sensor used to detect water level information and convert the water level into an electrical signal. It includes a gas cover, a housing, a diaphragm, an iron core, a main spring and a coil unit. The lower part of the housing is equipped with a fluid pressure sensor. receiving room. The water pressure is transmitted to the sensor air chamber through the air pipe, and the diaphragm overcomes the rebound force of the main spring to move the knife core to the coil direction under the action of the air pressure. When the core moves inside the coil, the inductance of the coil corresponds to the displacement of the core The water level sensor transmits this linear change to the computer board of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F39/08D06F33/42
CPCD06F39/083D06F39/087D06F2103/18D06F33/42
Inventor 陈瑜薛凯高秋英
Owner FOSHAN SHUNDE HAIER ELECTRIC APPLIANCES CO LTD
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