CN200955865Y - Water flow switch for electric water heater - Google Patents
Water flow switch for electric water heater Download PDFInfo
- Publication number
- CN200955865Y CN200955865Y CN 200620014959 CN200620014959U CN200955865Y CN 200955865 Y CN200955865 Y CN 200955865Y CN 200620014959 CN200620014959 CN 200620014959 CN 200620014959 U CN200620014959 U CN 200620014959U CN 200955865 Y CN200955865 Y CN 200955865Y
- Authority
- CN
- China
- Prior art keywords
- bar magnet
- flow switch
- water
- electric heater
- water flow
- Prior art date
- 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
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Abstract
The utility model provides a water flow switch on electric water heater, consisting of a water cavity and a sealing gasket. The water cavity consists of a water inlet and a water outlet with the sealing gasket communicating with the water outlet. Inside the cavity is arranged with a magnetic bar device with a magnetic bar. The magnetic bar device consists also a shell used to package the magnetic bar. A magnetic sensor is arranged on the external side of the water cavity to form a magnetic field, and the magnetic sensor is provided with an electronic circuit, which sends signals to control the heating of the hot pipes as the magnetic bar device reaches the magnetic field. Production of the utility water flow switch on electric water heater is relatively easy and the service is very safe.
Description
[technical field]
The utility model relates to a kind of water flow switch, relates in particular to a kind of electric heater water flow switch.
[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 switches 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, percent defective height during making, and complex structure, and also stainless steel substrates is thinner, easily leaks after the welding, the cost height.Simultaneously, this kind structure only is used for the electric heater (internal pressure is 0MPa) 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, continue heating, dry combustion method easily takes place, the water heater life-span is short.
Inductance type, high frequency oscillation formula and reed switch relay that other three kinds of water flow switches adopt bar magnet to expose in water are realized, this kind structure is come control relay by the signal code that magnetic induction produced by electronic circuit by coiling, to realize water flowing energising, the operation principle of cutting the supply of water and electricity and heating.The line footpath of the enamel-covered wire of described coil is thinner, generally at 0.03mm～0.08mm, and the technique for coiling complexity, 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 bigger, and magnet holds tongue tube and can not fall down sometimes after cutting off the water supply, and causes dry combustion method, magnet exposes easily to get rusty to take off in water and splits, the right-angle side at two ends is easy to hang to be caused to cut off the water supply on the inwall of water service pipe and not to cut off the power supply, and tongue tube connects high voltage source on the relay when water nozzle leaks, can related generation leaky.
This shows, be necessary to provide a kind of being easier to produce the electric heater water flow switch that security performance is high.
[utility model content]
The technical problem of the required solution of the utility model is to provide a kind of electric heater water flow switch, and it is easier to produce the security performance height.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of electric heater water flow switch is provided, comprises water flowing cavity and sealing gasket, described water flowing cavity comprises delivery port and water inlet, and described sealing gasket is connected with delivery port; Be provided with the bar magnet device in the chamber of described water flowing cavity, described bar magnet device comprises bar magnet; Wherein, described bar magnet device also comprises the used shell of encapsulation bar magnet, described water flowing chamber outer wall is provided with the magneto-dependent sensor that can form magnetic field at the water flowing cavity, and described magneto-dependent sensor is set up and send the electronic circuit that signal is controlled the heating of water heater heat-generating pipe when the bar magnet device is arrived field regions.
The bar magnet and the shell of described electric heater water flow switch are packaged into one.
The electronic circuit of the magneto-dependent sensor of described electric heater water flow switch is the dc low-voltage electronic circuit.
The outer wall of the bar magnet crust of the device of described electric heater water flow switch is provided with many projecting tendons.
The surface of each projecting tendon of described electric heater water flow switch is the arc surface.
The two ends of each projecting tendon of described electric heater water flow switch have fillet.
The outer wall of the bar magnet crust of the device of described electric heater water flow switch is provided with many projecting tendons.
The delivery port place of the water flowing cavity of described electric heater water flow switch is provided with and works the bar magnet block card frame that stops positioning action in the time of can floating to the top on the bar magnet device.
The delivery port of described electric heater water flow switch and sealing gasket and water flowing cavity is by screw crimping sealing.
Compared with prior art, the utility model electric heater water flow switch is provided with the bar magnet device in the water flowing cavity, water flowing chamber outer wall upper end is provided with magneto-dependent sensor, when water flowing, move on the described bar magnet device, and form magnetic field in the cavity upper end, the bar magnet in the described bar magnet device is encapsulated in the housing, this kind structure is easier to produce the security performance height.
Moreover described bar magnet device outer wall is provided with many projecting tendons, can guarantee that the bar magnet device is vertical, and the projecting tendon external diameter is greater than the housing external diameter, and making has the space between bar magnet device and the water flowing cavity, can guarantee discharge; The surface of projecting tendon is the arc surface, and the inwall contact area of itself and water flowing cavity is less, and it is less to rub; And the fillet at projecting tendon two ends can guarantee that more the bar magnet device moves up and down freely, can not hang over to cause to cut off the water supply on the water flowing cavity inner wall not cut off the power supply.
Described sealing gasket and delivery port are convenient to the dismounting maintenance by screw crimping sealing, and water-tight; The described port of export is provided with bar magnet block card frame, and cylindrical two ends through hole can guarantee the flow of water flowing in the middle of it, and cylinder plays the location when the bar magnet device fluctuates, vertical effect can not make the bar magnet device block.
[description of drawings]
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the schematic perspective view of the utility model electric heater water flow switch.
Fig. 2 is that Fig. 1 shows schematic diagram along cuing open of A-A place.
Fig. 3 is the schematic perspective view of the utility model electric heater water flow switch bar magnet shell.
[specific embodiment]
See also Fig. 1, the utility model electric heater water flow switch 100 comprises a water flowing cavity 1, a sealing gasket 2 and a ring flange 3.Described water flowing cavity 1 is connected with sealing gasket 2 by ring flange 3.
Please together consult Fig. 2, described water flowing cavity 1 comprises a delivery port 11 and a water inlet 10, and described sealing gasket 2 and ring flange 3 are located at delivery port 11.Described sealing gasket 2 seals by the screw crimping with delivery port 11, is convenient to the dismounting maintenance, is different from existing water flow switch and adopts glue bonding, not quick detachable, easily leaks when the temperature difference is big.Described water inlet 10 lateral walls are provided with external screw thread and are connected with running water pipe.
Described bar magnet device 12 comprises a bar magnet 120 and a shell 122, and described bar magnet 120 is sleeved on enclosure.The outer wall of described water flowing cavity 1 is equipped with magneto-dependent sensor 15 (as Fig. 1), and described magneto-dependent sensor 15 attaches dc low-voltage electronic circuit (not shown), the heat-generating pipe of described dc low-voltage electronic circuit control water heater (not shown).
Please together consult Fig. 3, described bar magnet 120 is encapsulated into one with shell 122, and the outer wall of described shell 122 is provided with many projecting tendons 123, described projecting tendon 123 can guarantee the perpendicularity of bar magnet device 12, and the external diameter of projecting tendon 123 can make flowing water flow through from space between projecting tendon 123 and water flowing cavity 1 inwall greater than the external diameter of shell 122, satisfy the water flowing flow, the surface of projecting tendon 123 is the arc surface, and the contact area of itself and water flowing cavity 1 inwall is less, and rubbing surface is less.The two ends of described projecting tendon 123 are provided with fillet 1230, guarantee that bar magnet device 12 moves up and down freely.With existing bar magnet expose in water, easily get rusty take off split different, and the right angle at existing bar magnet two ends easy to hang on the inwall of water flowing cavity 1, cause to cut off the water supply do not cut off the power supply.
The internal diameter of described water flowing cavity 1 can be selected according to flow, and length 30～200mm, material must be nonmagnetic stainless steel or plasthetics.The diameter of described bar magnet 120 can be according to the internal diameter of cavity.Select 4～ 25mm, length 5～30mm, the shell of bar magnet is plastic parts or stainless steel material, is non-magnetic material, and described shell 122 is packaged in bar magnet in the housing, and it is aging to protect bar magnet 120 can not get rusty in water for a long time.
The operation principle of described electric heater water flow switch 100 is: open water valve and flow by running water, bar magnet device 12 in the water flowing cavity 1 is rushed at the upper end, arrive the lower end of bar magnet block card frame 14, promptly arrive the field region of magneto-dependent sensor 15, by the magnetic element work of bar magnet device 12 bar magnets 120, the heat-generating pipe heating of the dc low-voltage electronic circuit control water heater that described magneto-dependent sensor 15 attaches; When closing the water valve of running water, running water stops to flow, be sunken to water inlet 10 places of water flowing cavity 1 lower end under the weight of bar magnet device 12 dependence in the described water flowing cavity 1 self, field region away from magneto-dependent sensor 15, the heat-generating pipe of the dc low-voltage electronic circuit control water heater that magneto-dependent sensor 15 attaches stops heating, thereby realize the water flowing energising, cut the supply of water and electricity, be i.e. the water power interlock.
The utility model electric heater water flow switch 100 is provided with bar magnet device 12 in water flowing cavity 1, magneto-dependent sensor 15 on the water flowing cavity 1 forms a magnetic field in water flowing cavity 1 cavity upper end, described bar magnet device 12 forms magnetic fields when the water flowing flow arrives block card frame 14 during at 0.8 liter/minute, bar magnet 120 in the described bar magnet device 12 is encapsulated in the shell 122, this kind structure is easier to produce the security performance height; Described bar magnet device 12 outer walls are provided with many projecting tendons 123, can guarantee that bar magnet device 12 is vertical, projecting tendon 123 external diameters are greater than shell 122 external diameters, making has the space between bar magnet device 12 and the water flowing cavity 1, can guarantee discharge, the arc surface of projecting tendon 123 is less with the inwall contact area of water flowing cavity 1, and it is less to rub, and the radian at projecting tendon 123 two ends can guarantee that bar magnet device 12 moves up and down freely, can not hang over to cause to cut off the water supply on water flowing cavity 1 inwall not cut off the power supply; Described sealing gasket 2 seals by the screw crimping with delivery port 11, is convenient to the dismounting maintenance, and water-tight; The described port of export is provided with bar magnet block card frame 14, bar magnet device 12 is fluctuated can not block.
Claims (9)
1. an electric heater water flow switch comprises water flowing cavity and sealing gasket, and described water flowing cavity comprises delivery port and water inlet, and described sealing gasket is connected with delivery port; Be provided with the bar magnet device in the chamber of described water flowing cavity, described bar magnet device comprises bar magnet; It is characterized in that: described bar magnet device also comprises the used shell of encapsulation bar magnet, described water flowing chamber outer wall is provided with the magneto-dependent sensor that can form magnetic field at the water flowing cavity, and described magneto-dependent sensor is set up and send the electronic circuit that signal is controlled the heating of water heater heat-generating pipe when the bar magnet device is arrived field regions.
2. electric heater water flow switch as claimed in claim 1 is characterized in that: described bar magnet and shell are packaged into one.
3. electric heater water flow switch as claimed in claim 1 is characterized in that: the electronic circuit of described magneto-dependent sensor is the dc low-voltage electronic circuit.
4. electric heater water flow switch as claimed in claim 1 is characterized in that: the outer wall of described bar magnet crust of the device is provided with many projecting tendons.
5. electric heater water flow switch as claimed in claim 4 is characterized in that: the surface of each projecting tendon is the arc surface.
6. electric heater water flow switch as claimed in claim 4 is characterized in that: the two ends of each projecting tendon have fillet.
7. electric heater water flow switch as claimed in claim 1 is characterized in that: the outer wall of described bar magnet crust of the device is provided with many projecting tendons.
8. electric heater water flow switch as claimed in claim 1 is characterized in that: the delivery port place of described water flowing cavity is provided with and works the bar magnet block card frame that stops positioning action in the time of can floating to the top on the bar magnet device.
9. as each described electric heater water flow switch in the claim 1 to 7, it is characterized in that: the delivery port of described sealing gasket and water flowing cavity is by screw crimping sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620014959 CN200955865Y (en) | 2006-09-26 | 2006-09-26 | Water flow switch for electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620014959 CN200955865Y (en) | 2006-09-26 | 2006-09-26 | Water flow switch for electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200955865Y true CN200955865Y (en) | 2007-10-03 |
Family
ID=38774450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620014959 Expired - Fee Related CN200955865Y (en) | 2006-09-26 | 2006-09-26 | Water flow switch for electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200955865Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988747A (en) * | 2010-12-08 | 2011-03-23 | 吴兢 | Improved structure of water inlet joint of water heater |
-
2006
- 2006-09-26 CN CN 200620014959 patent/CN200955865Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988747A (en) * | 2010-12-08 | 2011-03-23 | 吴兢 | Improved structure of water inlet joint of water heater |
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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 |
Granted publication date: 20071003 Termination date: 20140926 |
|
| EXPY | Termination of patent right or utility model |