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Water level detecting device

A technology of water level detection and box, which is applied in the direction of measuring device, measuring capacity, liquid/fluid solid measurement, etc. It can solve the problems of water level detection accuracy drop, pedestal 31 sloshing, inductance coefficient not being a fixed value, etc.

Inactive Publication Date: 2013-06-19
NAKAGAWA ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, since the bobbin 32 provided with the coil 8 and the upper case 30 are formed separately, the pedestal 31 on which the bobbin 32 is formed is mounted on the upper case 30 after the copper wire is wound on the bobbin 32. Therefore, there are the following problems: the pedestal 31 will shake, the stability of the relative position of the coil 8 and the iron core 11 has a limit, the inductance coefficient when the iron core 11 moves is not a fixed value, and the accuracy of water level detection decreases.

Method used

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no. 1 Embodiment approach

[0027] First, use Figure 1 ~ Figure 3 The configuration of the water level detection device in the first embodiment will be described.

[0028] figure 2 is a cross-sectional view showing the structure of the water level detection device in the first embodiment, image 3 It is an exploded perspective view showing the structure of the water level detection device in the first embodiment.

[0029] Such as figure 2 , image 3 As shown, a diaphragm plate 6 is provided in a lower case 9 having an inlet 10, and the diaphragm plate 6 is connected to an iron core 11 made of iron oxide or the like through a connecting plate 7. The central portion of the diaphragm plate 6 is recessed from the peripheral portion under normal pressure, and a predetermined space is formed between the lower case 9 and the diaphragm plate 6 . This space is connected to the inlet 10 . The upper box body 30 is installed on the lower box body 9, and the upper box body 30 and the lower box body 9 wrap th...

no. 2 Embodiment approach

[0036] Next, use Figure 4A , Figure 4B The configuration of the water level detection device in the second embodiment will be described.

[0037] Figure 4A , Figure 4B It is a figure which shows the structure of the water level detection apparatus in 2nd Embodiment, Figure 4A It is an exploded perspective view showing the main part, Figure 4B is a cross-sectional view.

[0038] The water level detection device of the second embodiment is characterized in that holes are provided in the upper case of the water level detection device of the first embodiment.

[0039] Such as Figure 4A , Figure 4B As shown, a hole 15 is formed in a region of the upper case 1 opposite to the position where the capacitor 12 is mounted on the terminal block 3 . The size of the hole 15 is such that the capacitor 12 can pass through. By providing such a hole 15, when the height of the coil installation part 2, which is the distance between the terminal block 3 and the upper case 1, is ...

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Abstract

The invention relates to a water level detecting device. A coil arrangement part (2) of an upper case body (1) used for forming coils (8), a terminal bench (3) used for arrangement of an external terminal (4), and the upper case body (1) are integratedly formed. The water level detection can be realized in a mini-sized, light-weight, and stable manner, and the detection precision of the oscillation frequency change can be guaranteed.

Description

technical field [0001] The invention relates to a water level detection device. The water level detection device moves the iron core in the coil through the pressure of the diaphragm plate, and reads the change of the LC oscillation frequency to detect the water level. Background technique [0002] As a device for detecting the liquid water level, a water level detecting device that detects that a predetermined water level has been reached by a pressure sensor having a diaphragm plate is used. For example, when it is detected that the water injected into the water tank in the device reaches a certain water level, a water level detection device is installed at any position of the water tank, and the water level detection device detects that the water level has reached the specified water level. [0003] use Figure 5 , Image 6 The configuration of a conventional water level detection device will be described. [0004] Figure 5 is a cross-sectional view showing the structu...

Claims

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Application Information

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IPC IPC(8): G01F23/16
CPCG01F15/063G01F23/18
Inventor 加藤梅志
Owner NAKAGAWA ELECTRIC IND CO LTD
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