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Electronic pressure switch

A pressure switch, electronic technology, applied in electronic switches, electric switches, electric fluid pressure control and other directions, can solve problems such as malfunction, shortened service life, damage to water pump seals, etc., to prevent malfunction, easy operation, Reliable performance

Inactive Publication Date: 2006-08-30
叶灵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The water pump shuts off the faucet during normal work and the water pump stops running: if the water pressure drops slightly during this process, the switch will malfunction, causing the switch to close continuously or disconnect the power supply of the water pump, causing the water pump to start frequently
Obviously, the service life of the water pump will be shortened after working for such a long time, and the motor will be burned immediately in severe cases.
[0006] 2. If there is no water in the water pipe, the switch will close the power supply of the water pump to make the water pump run, causing the water pump to run idly, and working for a long time will damage the seal in the water pump
[0007] 3. When the water pump is stuck: turn on the faucet, close the switch to make the pump run, which will cause the water pump not to rotate when it is powered on
[0008] For example, the "electronic pressure switch" provided by Chinese patent 200420011527.6 is an electromagnetic switch composed of a pressure bag associated with a water inlet or an air inlet, a magnetic sheet that can move with the pressure bag and a movable platen, and a reed switch corresponding to the magnetic sheet It is realized together with the switch control circuit composed of electronic components. Although it effectively overcomes the shortcomings of the existing pressure switch when the pressure difference range is small when it is turned on and off, it is easy to cause misoperation and loss of control, but there are also problems of no water in the water pipe or the stuck water pump. In some cases, problems such as burning the motor after working for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 and figure 2 As shown, the electronic pressure switch is composed of a housing 1, a control circuit 7, a movable platen 3, a sealing ring 2, a spring 4, and the like.

[0033] The inside of the housing 1 is a cavity, and two pressure plates are respectively provided on both sides of the housing 1 , and the sealing ring 2 is fixedly connected in the housing 1 through the two pressure plates. In order to simplify parts and facilitate assembly, the housing 1 in this embodiment is divided into an upper housing and a lower housing, and the sealing ring 2 is tightly pressed on the joint between the upper housing and the lower housing.

[0034] The sealing ring 2 separates the cavity of the housing 1 into two cavities, the movable chamber 11 and the water inlet chamber 12 , and the movable chamber 11 and the water inlet chamber 12 are not connected.

[0035] The movable platen 3 is arranged in the movable cavity 11 , and the bottom of the movable platen 3 i...

Embodiment 2

[0044] Such as Figure 6 and Figure 7 and Figure 8 As shown, the structure and principle of this embodiment are basically the same as that of Embodiment 1, the difference is that the pressure baffle 32 is two pieces, and they are respectively vertically fixed on the movable pressure plate 3 on both sides of the guide post 31, and the two pressure baffles The lengths of the pressure baffles 32 are different. The above-mentioned start sensor 5 and stop sensor 6 are respectively arranged at the two pressure baffles 32 .

[0045] When the water pipe was dry or the water pump was stuck, after the water pump worked for a period of time, the water pressure still dropped, and the pressure baffle plate 32 dropped to the position that did not block the two sensors. Obviously, at this time, the water pump will automatically stop after working for a certain period of time. This plays a role in protecting the water pump motor.

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Abstract

The invention provides an electronic pressure switch, comprising casing and control circuit, where a seal ring is arranged in the casing and divides the casing into active cavity and water inlet cavity, not interconnected, the side of the seal ring is fixed with active pressure plate arranged in the active cavity, a spring is arranged in the active cavity, two ends of the spring act on the active pressure plate and the casing, respectively, and the control circuit is composed of power supply, starting sensor, stop sensor, CPU and manual switch, the signals received by the starting sensor and stop sensor are inputted into the CPU, which determines if to supply power to water pump after processing them, the active pressure plate is fixed with a pressure baffle which is arranged in the active cavity and at the starting sensor and stop sensor to change the signals received by the two sensors. And it is convenient to operate and has reliable performance.

Description

technical field [0001] The invention belongs to the technical field of electromechanical integration, and relates to a pressure switch, in particular to an electronic pressure switch. Background technique [0002] In domestic water supply, if water is supplied by a water pump and no water tower or water storage container is installed in the user's home, every time water is needed, the power of the water pump must be connected to make the water pump work. [0003] Before the water pump starts to work: first turn on the faucet, and then turn on the power to make the water pump start to work; when not in use: first cut off the power supply of the water pump, let the water pump stop working, and then turn off the water tap. It can be seen that the above operation process is cumbersome. [0004] As a solution to the above-mentioned problems, although the pressure switch overcomes the above-mentioned shortcomings, it also has the following problems: [0005] 1. The water pump tur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H35/24H01H35/34H03K17/94G05D16/20
Inventor 叶灵
Owner 叶灵
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