CN203286771U - Magnetic induction water flow switch - Google Patents
Magnetic induction water flow switch Download PDFInfo
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- CN203286771U CN203286771U CN2013202761559U CN201320276155U CN203286771U CN 203286771 U CN203286771 U CN 203286771U CN 2013202761559 U CN2013202761559 U CN 2013202761559U CN 201320276155 U CN201320276155 U CN 201320276155U CN 203286771 U CN203286771 U CN 203286771U
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- water flow
- magnetic
- cavity
- magnetic induction
- flow switch
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Abstract
The utility model provides a magnetic induction water flow switch which comprises a water flow magnetic variation device and a magnetic induction device. The water flow magnetic variation device is arranged in a water through cavity. The magnetic induction device is arranged in another device cavity. The water through cavity and the device cavity are placed on an upper layer and a lower layer. The water flow magnetic variation device comprises a rotor which generates magnetic flux variation along with water flow and a rotating shaft. The rotating shaft is arranged in the middle of the water through cavity. The rotor is arranged on the rotating shaft and can rotate along with water flow. The magnetic induction device comprises a Hall element which is arranged in the device cavity and is arranged under the rotor. The Hall element can sense magnetic flux variation generated by the rotor along with water flow and then generate corresponding electric signals which are transmitted to an external processor for processing. The magnetic induction water flow switch is high in safety performance, high in sensitivity and simple in structure.
Description
Technical field
The utility model relates to a kind of water flow switch, particularly a kind of magnetic induction water flow switch for instant-heating electric water heater.
Background technology
The water flow switch of electric heater in the market has multiple, commonly used a kind ofly cut off the water supply or water flowing can realize outage or switch on for hydraulic pressure switch.Described hydraulic pressure switch is provided with the stainless steel substrates of tool male and fomale(M﹠F), and described stainless steel substrates is realized the water flowing energising, cut the supply of water and electricity under the pressure of water.It is consistent that the elastic force of this kind hydraulic pressure switch structural requirement stainless steel substrates is wanted, and during making, percent defective is high, complex structure, and also stainless steel substrates is thinner, easily leaks after welding, and cost is high.Simultaneously, this kind structure only is used for the electric heater (internal pressure is OMPa) of open type, is not useable for closed electrical water heater (internal pressure is 0.6MPa) and uses, be connected into the closed electrical water heater use in case refute, dry combustion method, easily occur in continuous heating, and the water heater life-span is short.
Other three kinds of water flow switches adopt exposed inductance type, high frequency oscillation formula and the reed switch relay in water of bar magnet to realize, this kind structure is carried out control relay by the signal code that magnetic induction produces by electronic circuit by coiling, to realize water flowing energising, the operation principle of cutting the supply of water and electricity and heating.The wire diameter of the enamel-covered wire of described coil is thinner, and generally at 0.03mm-0.08mm, and technique for coiling is complicated, and pigtail splice is easily broken, and coil is easy burn-out when long-term energising, and maintenance rate is higher.The water out adapter of the water flow switch of reed switch relay, the normal screw thread that adopts adds the glue connection, easily leak, the adhesive of tongue tube requires the magnetic of magnet larger, and magnet holds tongue tube and can not fall down sometimes after cutting off the water supply, and causes dry combustion method, magnet is exposed easily to get rusty to take off and splits in water, the right-angle side at two ends is easy to hang to be caused to cut off the water supply and not to cut off the power supply on the inwall of water service pipe, tongue tube connects high voltage source on relay when water nozzle leaks, can related generation leaky.This shows, be necessary to provide a kind of being easier to produce, the electric water device flow switch that security performance is high.
The utility model content
In existing deficiency aspect control, the purpose of this utility model is to provide a kind of security performance high, highly sensitive, and magnetic induction water flow switch simple in structure for above-mentioned existing water flow switch.
The technical scheme that adopts is:
A kind of magnetic induction water flow switch, comprise current magnetic variation device and magnetic strength device, and described current magnetic variation device is arranged in a water flowing cavity, and described magnetic strength device is arranged in another device cavity, and described water flowing cavity and described device cavity are in two-layer position, up and down; Described current magnetic variation device comprises rotor and the rotating shaft that produces magnetic flux change with current, and described rotating shaft is arranged in the middle of described water flowing cavity, and described rotor is arranged in described rotating shaft, and can rotate with current; Described magnetic strength device comprises Hall element, described Hall element be arranged in described device cavity and be positioned at described rotor under, produce corresponding electric signal transmission after the magnetic flux change that this Hall element energy perception rotor produces with current and process to ppu.
Preferably, described rotor comprises the disk that is provided with centre bore and is arranged on the blade that this disk week makes progress, and in this disk week, upwards also is provided with the groove of four symmetries, on this groove, magnet is installed, and this magnet is pressed the N/S alternating polarity and arranged.
Further, described blade can be odd number, also can be even number, is 11 or 13 during odd number, is 12 during even number.
Preferably, described Hall element is close to the end near described water flowing cavity, and the distance of itself and rotor is in 5mm.
Preferably, described water flowing cavity adopts the both-end channelling water, is provided with a water inlet and a delivery port.
Further, the housing of this magnetic induction water flow switch is comprised of the upper cartridge body that removably connects, middle box body and lower cover, by described upper cartridge body and described middle box body, is connected to form described water flowing cavity, by described middle box body and described lower cover, is connected to form described device cavity.
Further, described water inlet is arranged on described upper cartridge body and with described water flowing cavity and is communicated with, and described delivery port is arranged on described middle box body and with described water flowing cavity and is communicated with.
The utility model by Hall element is arranged in the device cavity and be positioned at rotor under, thereby greatly reduced the coverage of Hall element and checker magnetic flux, validity and the precision of Hall element response have been improved, make Hall element change the caused magnetic induction intensity of the pulse signal of flow, the precision of variable quantity and the sensitivity of variation increase thus; By two water flowing cavity and device cavitys that are not communicated with and locate upper-lower position are set, can not produce the electric leakage of leaking, security performance is high, and overall structure is simple.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation that the utility model decomposes;
Fig. 2 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment that obtains, and all belong to the scope of the utility model protection.
Referring to Fig. 1 and Fig. 2, a kind of magnetic induction water flow switch, comprise current magnetic variation device 1 and magnetic strength device 2, and described current magnetic variation device is arranged on 3 li of water flowing cavitys, described magnetic strength device is arranged on 4 li of another device cavitys, and described water flowing cavity 3 and described device cavity 4 are in two-layer position, up and down; Described current magnetic variation device 1 comprises rotor 11 and the rotating shaft 12 that produces magnetic flux change with current, and described rotating shaft 12 is arranged in the middle of described water flowing cavity 3, and described rotor 11 is arranged in described rotating shaft 12, and can rotate with current; Described magnetic strength device 2 comprises Hall element 21, described Hall element 21 be arranged on 4 li of described device cavitys and be positioned at described rotor 11 under, produce corresponding electric signal transmission after the magnetic flux change that this Hall element 21 can perception rotors 11 produces with current and process to ppu.
By Hall element is arranged in the device cavity and be positioned at rotor under, thereby greatly reduced the coverage of Hall element and checker magnetic flux, validity and the precision of Hall element response have been improved, make Hall element change the caused magnetic induction intensity of the pulse signal of flow, the precision of variable quantity and the sensitivity of variation increase thus; By two water flowing cavity and device cavitys that are not communicated with and locate upper-lower position are set, can not produce the electric leakage of leaking, security performance is high, and overall structure is simple.
Described rotor 11 comprises the disk 111 that is provided with centre bore and is arranged on the blade 112 that makes progress in this disk week, in these 111 weeks of disk, upwards also is provided with the groove 113 of four symmetries, and magnet 114 is installed on this groove, and this magnet 114 is pressed the N/S alternating polarity and arranged.Can produce well-regulated magnetic flux change when rotor rotates like this.
Described blade 112 can be odd number, also can be even number, is 11 or 13 during odd number, is 12 during even number, and the present embodiment is 12 of even number.No matter but be odd number or even number,, as long as can be evenly distributed, make rotor rotate balanced getting final product.
Described Hall element 21 is close to the end near described water flowing cavity 3, and the distance of itself and rotor 11 is in 5mm.Can further increase the sensitivity of Hall element induction.The data wire 22 that this Hall element 21 connects can further connect microprocessor.
Described water flowing cavity 3 adopts the both-end channelling water, is provided with a water inlet 31 and a delivery port 32, and this structure applications is convenient.
The housing of this magnetic induction water flow switch is comprised of the upper cartridge body 5 that removably connects, middle box body 6 and lower cover 7, by described upper cartridge body 5, with described middle box body 6, is connected to form described water flowing cavity 3, by described middle box body 6 and described lower cover 7, is connected to form described device cavity 4.Upper cartridge body 5, middle box body 6 and lower cover 7 removably connect and are specially: at upper cartridge body 5, middle box body 6 and lower cover 7, corresponding combined hole 8 is set respectively, then can further by screw 9, be fixed.
Described water inlet 31 is arranged on described upper cartridge body 5 and with described water flowing cavity 3 and is communicated with, and described delivery port 32 is arranged on described middle box body 6 and with described water flowing cavity 3 and is communicated with, and increases the symmetry of the structure of upper cartridge body 5 and middle box body 6, also is convenient to install.
Described upper cartridge body 5, middle box body 6 and lower cover 7 form by plastic production, compare the use metal, and its structure is more lightly durable.
During use, when having current to flow through the water flowing cavity, because can driving water flowing cavity internal rotor, the active force of current rotates, thereby 4 regular rotations of small magnet that N/S alternating polarity symmetrical on rotor is arranged, the variation of this well-regulated magnetic flux makes the Hall element that is contained under the water flowing cavity produce well-regulated opening and cut-off signal, be the high-low level conversion, Hall element is also controlled the open and close of electric heater with these electric signal transmissions to the microprocessor Check processing again.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. magnetic induction water flow switch, it is characterized in that: comprise current magnetic variation device and magnetic strength device, described current magnetic variation device is arranged in a water flowing cavity, and described magnetic strength device is arranged in another device cavity, and described water flowing cavity and described device cavity are in two-layer position, up and down; Described current magnetic variation device comprises rotor and the rotating shaft that produces magnetic flux change with current, and described rotating shaft is arranged in the middle of described water flowing cavity, and described rotor is arranged in described rotating shaft, and can rotate with current; Described magnetic strength device comprises Hall element, described Hall element be arranged in described device cavity and be positioned at described rotor under, produce corresponding electric signal transmission after the magnetic flux change that this Hall element energy perception rotor produces with current and process to ppu.
2. magnetic induction water flow switch as claimed in claim 1, it is characterized in that: described rotor comprises the disk that is provided with centre bore and is arranged on the blade that this disk week makes progress, upwards also be provided with the groove of four symmetries in this disk week, on this groove, magnet be installed, this magnet is pressed the N/S alternating polarity and is arranged.
3. magnetic induction water flow switch as claimed in claim 2, it is characterized in that: described blade is odd number or even number, is 11 or 13 during odd number, is 12 during even number.
4. magnetic induction water flow switch as claimed in claim 1 is characterized in that: described Hall element is close to the end near described water flowing cavity, and the distance of itself and rotor is in 5mm.
5. magnetic induction water flow switch as claimed in claim 1 is characterized in that: described water flowing cavity adopts the both-end channelling water, is provided with a water inlet and a delivery port.
6. magnetic induction water flow switch as claimed in claim 5, it is characterized in that: the housing of this magnetic induction water flow switch is comprised of the upper cartridge body that removably connects, middle box body and lower cover, be connected to form described water flowing cavity by described upper cartridge body and described middle box body, by described middle box body and described lower cover, be connected to form described device cavity.
7. magnetic induction water flow switch as claimed in claim 6, it is characterized in that: described water inlet is arranged on described upper cartridge body and with described water flowing cavity and is communicated with, and described delivery port is arranged on described middle box body and with described water flowing cavity and is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202761559U CN203286771U (en) | 2013-05-20 | 2013-05-20 | Magnetic induction water flow switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202761559U CN203286771U (en) | 2013-05-20 | 2013-05-20 | Magnetic induction water flow switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203286771U true CN203286771U (en) | 2013-11-13 |
Family
ID=49543132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202761559U Expired - Fee Related CN203286771U (en) | 2013-05-20 | 2013-05-20 | Magnetic induction water flow switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203286771U (en) |
-
2013
- 2013-05-20 CN CN2013202761559U patent/CN203286771U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20170520 |