CN201007664Y - Hall flow sensor - Google Patents

Hall flow sensor Download PDF

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Publication number
CN201007664Y
CN201007664Y CNU2006201359417U CN200620135941U CN201007664Y CN 201007664 Y CN201007664 Y CN 201007664Y CN U2006201359417 U CNU2006201359417 U CN U2006201359417U CN 200620135941 U CN200620135941 U CN 200620135941U CN 201007664 Y CN201007664 Y CN 201007664Y
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CN
China
Prior art keywords
flow
permanent magnet
hall switch
hall
fluid
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2006201359417U
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Chinese (zh)
Inventor
牛雨飞
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牛雨飞
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Application filed by 牛雨飞 filed Critical 牛雨飞
Priority to CNU2006201359417U priority Critical patent/CN201007664Y/en
Application granted granted Critical
Publication of CN201007664Y publication Critical patent/CN201007664Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a Hall flow sensor. A connection shaft is connected with the wheel boss which is connected with a blade wheel in a casing, an axle bearing is arranged between the connection shaft and the wheel boss which is provided with a permanent magnet. A Hall switch is arranged at the same radial position on the same side of the permanent magnet on the casing. The permanent magnet rotates synchronously with the blade wheel, and the Hall switch inducts and generates differential impulse electric signals and outputs the signals to a flow measuring instrument by changing the magnetic flux of the Hall switch with the change of the distance between the permanent magnet and the Hall switch. The utility model has the advantages that the design is reasonable, the structure is simple, the sensibility is good, the measure is accurate, and the cost is low, which can be utilized as the sensor of the flow instrument for measuring fluid of pipes, the sensor of signal indicator of fluid flow, further a switch of fluid driving pumps of pipes. The utility model can be popularized and applied in the flow instruments of fuel charger, flow instruments of oil pipelines and pipes of corroding fluid, a solar water heater, a household tap-water pump and the like.

Description

The Hall flow sensor
Technical field
The utility model belongs to measures the continuous fluid of instrument or the flow or the mass rate technical field of flowing solid material passed through, and is specifically related to use electric or magnetic effect.
Background technology
Flow sensor is a kind of parts that are used for measuring on the fluid flow instrument, flow sensor will be flowed through, and the volume of liquid changes into electric signal output on it, having many uses of flow sensor, on flow detection equipment such as gasoline fuel charger, fuel truck, oil tank fuel charger, oil pipeline, be extensive use of, be requisite parts on the various fluid flow checkout equipments, the structure and the machining precision of the sensitivity of fluid flow checkout equipment, accuracy, measuring accuracy scope and flow sensor have direct relation.
The kind of existing flow sensor is a lot, and mechanical flow sensor, galvanomagnetic effect flow sensor, optic flow sensor are arranged.The patent No. is that 87213580U, denomination of invention are the Chinese patent of " Hall bumpy flow amount detector ", the turbo flow meter impeller is installed in housing, housing one end is equipped with the Hall switch element, the top of Hall switch element is equipped with the magnet steel of adjustable distance, magnet steel one end connects with adjuster bar, the end of adjuster bar is equipped with setting nut, is used to regulate the length of adjuster bar, and adjuster bar is used for regulating the distance of magnet steel and Hall switch element.The flow sensor of this structure, complex structure, the distance of magnet steel and Hall switch element is owing to be subjected to the variation of natural conditions and environment temperature, and the machining precision of adjuster bar and mismatch error all can directly have influence on sensitivity, accuracy, the measuring accuracy scope of flow sensor.
By the patent No. of U.S. Bear Medical Systems, INC. application be 98813682.1, denomination of invention is the Chinese patent of " variable orifice flow detecting device ", it is long-pending to have adopted deflectable " flapper " to change the runner effective cross section, to improve sensitivity and the resolving power of fluid under low flow rate, reduce the measurement resistance under the high flow rate.This detecting device is not directly " flapper " amount of deflection of fluid-responsive flow rate to be converted to flow signal, but the hydrodynamic pressure of " flapper " upstream and downstream is drawn with connecting pipe, convert the pressure reduction simulating signal relevant to pressure detector again with flow, simulating signal is input microprocessor after the A/D conversion, output stream value after programming is calculated." flapper " of detecting device is vertically mounted in the runner, and during greater than predetermined value, " flapper " needs protection, otherwise fragile in flow rate.This flow detector, conversion links is many, complex structure, production cost height.
Optical fiber type turbine flow transducer, its shortcoming be complex structure, cost an arm and a leg, be difficult to be promoted, and optical element is easy to contaminatedly in application, causes and misreads and lost efficacy.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the shortcoming of above-mentioned flow sensor, and a kind of reasonable in design, simple in structure, highly sensitive, measuring accuracy is high, cost of products is low Hall flow sensor is provided.
Solving the problems of the technologies described above the technical scheme that is adopted is: connect the wheel hub that links with impeller with coupling spindle in housing, between coupling spindle and the wheel hub bearing is set, wheel hub is provided with a permanent magnet, and the same side of permanent magnet, same radical length position are provided with Hall switch on the housing.
The axial distance of Hall switch of the present utility model and permanent magnet is 0.5~10mm.
The preferred axial distance of Hall switch of the present utility model and permanent magnet is 1~8mm.
The best axial distance of Hall switch of the present utility model and permanent magnet is 5mm.
The utility model adopts Hall switch is set on housing, with wheel hub that impeller connects on permanent magnet is set, permanent magnet and impeller rotate synchronously, change along with the distance of permanent magnet and Hall switch, magnetic flux by Hall switch changes, and the Hall switch induction produces the difference pulse electric signal and outputs to flowmeter.The flow sensor of this structure has very high sensitivity and measuring accuracy.The utlity model has advantages such as reasonable in design, simple in structure, highly sensitive, that measuring accuracy is high, cost of products is low, can be used as the sensor of measuring channel liquid flowmeter, also can be used as the sensor of liquid flow signals indicator, can also can on fuel charger flowmeter, oil pipeline and corrosive liquid pipeline flowmeter, solar water heater and household tap water pump etc., promote the use of as the gauge tap of pipeline liquid driving pump.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the vertical view of Fig. 1.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but the utility model is not limited to these embodiment.
Embodiment 1
In Fig. 1,2, the flow sensor of present embodiment is made of impeller 1, Hall switch 2, permanent magnet 3, wheel hub 4, housing 5, coupling spindle 6, bearing 7 connections.
With coupling spindle 6 wheel hub 4 is installed on the housing 5 in housing 5, between coupling spindle 6 and the wheel hub 4 bearing 7 is installed, wheel hub 4 can center on coupling spindle 6 high speed rotating, the circumferencial direction outer of wheel hub 4 is set with impeller 1, impeller 1 is used for when fluid flows, promote impeller 1 and rotate, impeller 1 drives wheel hub 4 and rotates.Upper surface at wheel hub 4 is installed with a permanent magnet 3, and when wheel hub 4 rotated, permanent magnet 3 rotated in housing 5 in company with wheel hub 4.Upper surface and permanent magnet 3 same radical length positions at housing 5 are equipped with Hall switch 2, Hall switch 2 links by lead and flowmeter, Hall switch 2 is 5mm with the axial distance of permanent magnet 3, Hall switch 2 should determine that Hall switch 2 is used to produce the difference pulse electric signal according to the flow size of fluid and the volume size of housing 5 with the size of the axial distance of permanent magnet 3.When fluid from the housing 5 inlet on the tangential direction when the outlet on the tangential direction is flowed in housing 5, promoting impeller 1 rotates, the permanent magnet 3 that combines as a whole wheel hub 4 with impeller 1 and be installed on the wheel hub 4 rotates synchronously with impeller 1, along with the change of permanent magnet 3 with the distance of Hall switch 2, magnetic flux by Hall switch 2 changes, and outputs to flowmeter thereby make Hall switch 2 inductions produce the difference pulse electric signal.The flow sensor of this structure has very high sensitivity and measuring accuracy.This flow sensor can be used as the sensor of measuring channel liquid flowmeter, also can be used as the sensor of liquid flow signals indicator, can also obtain the gauge tap of starting switch signal by comparator circuit, can on fuel charger flowmeter, oil pipeline and corrosive liquid pipeline flowmeter, solar water heater and household tap water pump etc., promote the use of as the pipeline liquid driving pump.Because detecting element Hall switch 2 is isolated with liquid phase, particularly suitable is as the flow sensor of high corrosive liquid flow detector.
Embodiment 2
In the present embodiment, Hall switch 2 is 0.5mm with the axial distance of permanent magnet 3.The connecting relation of other parts and parts is identical with embodiment 1.
Embodiment 3
In the present embodiment, Hall switch 2 is 10mm with the axial distance of permanent magnet 3.The connecting relation of other parts and parts is identical with embodiment 1.
According to above-mentioned principle, can also design the Hall flow sensor of another concrete structure, but all within protection domain of the present utility model.

Claims (4)

1. Hall flow sensor, it is characterized in that: in housing (5), connect the wheel hub (4) that links with impeller (1) with coupling spindle (6), between coupling spindle (6) and the wheel hub (4) bearing (7) is set, wheel hub (4) is provided with a permanent magnet (3), and the same side, same radical length position that housing (5) is gone up permanent magnet (3) are provided with Hall switch (2).
2. according to the described Hall flow sensor of claim 1, it is characterized in that: said Hall switch (2) is 0.5~10mm with the axial distance of permanent magnet (3).
3. according to the described Hall flow sensor of claim 2, it is characterized in that: said Hall switch (2) is 1~8mm with the axial distance of permanent magnet (3).
4. according to the described Hall flow sensor of claim 2, it is characterized in that: said Hall switch (2) is 5mm with the axial distance of permanent magnet (3).
CNU2006201359417U 2006-10-12 2006-10-12 Hall flow sensor Expired - Fee Related CN201007664Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2006201359417U CN201007664Y (en) 2006-10-12 2006-10-12 Hall flow sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2006201359417U CN201007664Y (en) 2006-10-12 2006-10-12 Hall flow sensor

Publications (1)

Publication Number Publication Date
CN201007664Y true CN201007664Y (en) 2008-01-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2006201359417U Expired - Fee Related CN201007664Y (en) 2006-10-12 2006-10-12 Hall flow sensor

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CN (1) CN201007664Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102080533A (en) * 2010-12-22 2011-06-01 杭州瑞利声电技术公司 Novel flow sensor module
CN102589624A (en) * 2012-03-06 2012-07-18 无锡水表有限责任公司 Water meter capable of rapidly measuring flow and measuring method thereof
CN103161737A (en) * 2012-06-15 2013-06-19 余昌海 Flow detection controller and automatic control water pump with flow detection controller
CN104154960A (en) * 2014-08-01 2014-11-19 衢州市鼎盛化工科技有限公司 Hall-effect large-diameter pipeline flowmeter
CN107806914A (en) * 2017-09-30 2018-03-16 上海邦芯物联网科技有限公司 A kind of magnetic induction intellectual water meter
CN107906773A (en) * 2017-10-25 2018-04-13 汪涛 The automatic loading water control system of solar water heater

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102080533A (en) * 2010-12-22 2011-06-01 杭州瑞利声电技术公司 Novel flow sensor module
CN102589624A (en) * 2012-03-06 2012-07-18 无锡水表有限责任公司 Water meter capable of rapidly measuring flow and measuring method thereof
CN103161737A (en) * 2012-06-15 2013-06-19 余昌海 Flow detection controller and automatic control water pump with flow detection controller
CN103161737B (en) * 2012-06-15 2016-08-03 余昌海 A kind of flow detection controller and use the automatic controlled water pump of this controller
CN104154960A (en) * 2014-08-01 2014-11-19 衢州市鼎盛化工科技有限公司 Hall-effect large-diameter pipeline flowmeter
CN107806914A (en) * 2017-09-30 2018-03-16 上海邦芯物联网科技有限公司 A kind of magnetic induction intellectual water meter
CN107906773A (en) * 2017-10-25 2018-04-13 汪涛 The automatic loading water control system of solar water heater

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080116

Termination date: 20091112