Water level sensor

A technology of water level sensor and inductance coil, which is applied in the direction of liquid level indicator for physical variable measurement, can solve the problem of inability to adjust the initial resonant frequency, achieve the effect of improving production efficiency and economic benefits, and reducing scrap rate

Inactive Publication Date: 2012-04-25
张家港华峰电接插元件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the prior art, the accuracy of the water level sensor is affected by the processing accuracy of the capacitance, inductance coil and magnetic core, etc. When there is a deviation b

Method used

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Examples

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Example Embodiment

[0019] Example 1

[0020] Such as figure 2 As shown, the water level sensor of this embodiment includes a base 4, an outer ring wrapped around the base 4 for protection, a protective cover provided at the bottom of the base 4 and having an air inlet 20, 2 provided at the base 4. The sealing disc 3 inside and hermetically connected with the inner wall of the base 4, the magnetic core 5 arranged above the sealing disc 3 and the lower part is against the sealing disc 3, the hollow bracket arranged on the upper part of the base 4, the capacitor 6, the inductor The coil 7 and the spring 8 located in the cavity of the hollow stent and whose lower end abuts against the magnetic core 5. According to this embodiment, the hollow stent includes a hollow first stent 10 and a first stent 10 arranged on the outer periphery of the first stent 10 and connected to the base. The second bracket 11 fixedly connected to the seat 4, the inductance coil 7 and the capacitor 6 are fixed on the first br...

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PUM

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Abstract

The invention relates to a water level sensor, which comprises a base, a protecting cover arranged at the bottom of the base, a seal disc in seal connection with the inner wall of the base, a magnetic core of which the lower part abuts against the seal disc, a hollow support arranged at the upper part of the base, a capacitor, an inductance coil and a spring arranged in the cavity of the hollow support, wherein the hollow support comprises a hollow first support and a second support which is arranged at the periphery of the first support and fixedly connected with the base; the first support and the second support are connected through a thread; the axial line extension direction of the thread is consistent with the vertical direction; and the inductance coil and the capacitor are both fixed on the first support. The vertical distance between the inductance coil and the magnetic core can be changed by spiral advancing and regressing of the first support and the second support in the invention, thus reducing the resonance frequency of the overall LC (inductance-capacitance) circuit of the sensor and ensuring the initial resonance frequency to be adjustable, further reducing the product rejection rate, reducing production cost and improving production efficiency and economic benefit.

Description

technical field [0001] The invention relates to a water level sensor. Background technique [0002] The working principle of the water level sensor is: the water level sensor transmits the sensed water level signal to the controller, and the computer in the controller compares the measured water level signal with the set signal to obtain the deviation, and then according to the nature of the deviation, send water to the electric motor The valve sends "open" and "close" commands to ensure that the set water level is reached in the container. [0003] like figure 1 Shown is a water level sensor for a washing machine, which consists of an outer ring 1', a cover 2' with an air inlet nozzle 20', a sealing disc 3', a base 4', a magnetic core 5', a capacitor 6', an inductance Coil 7', spring 8', screw 9' and support 10' and other parts. When the sensor works, the air intake nozzle 20' on the protective cover 2' is connected to the air chamber of the bucket of the washing machine...

Claims

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Application Information

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IPC IPC(8): G01F23/22
Inventor 赵晖龚三军
Owner 张家港华峰电接插元件有限公司
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