CN2796041Y - Energy saving type DC electromagnet - Google Patents
Energy saving type DC electromagnet Download PDFInfo
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- CN2796041Y CN2796041Y CN 200520096622 CN200520096622U CN2796041Y CN 2796041 Y CN2796041 Y CN 2796041Y CN 200520096622 CN200520096622 CN 200520096622 CN 200520096622 U CN200520096622 U CN 200520096622U CN 2796041 Y CN2796041 Y CN 2796041Y
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- electromagnet
- magnetizing coil
- utility
- iron core
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Abstract
The utility model relates to an energy saving type dc electromagnet which comprises an iron core, an armature mechanism and a field coil (L), wherein the field coil (L) is wound around the iron core. The electromagnet is characterized in that the field coil (L) is connected with a dc power supply (DCV) after being connected with a positive temperature coefficient thermistor (RT). The utility model can save a large amount of electric energy in use.
Description
Technical field
The utility model relates to a kind of DC electromagnet.
Background technology
Electromagnet is to utilize electromagnetic force to realize electric energy is converted to a kind of electromagnetic device of mechanical energy, is widely used in the electric automatization field, not only can be used as independent component and uses, still the main element of many Electromagnetic Control elements.DC electromagnet is formed (see " Electromagnetic Control element ", Ge Weiliang, Wang's Bohai Sea are write publishing house of Beijing Institute of Technology, 1994) by magnetizing coil, iron core, armature mechanism.Positive temperature coefficient thermistor (PTCR), it is a kind of rising along with the device body temperature, its resistance value becomes big semiconductor element automatically, be widely used in household electrical appliance and automation electronic technology field, there is different technical parameters to require (to see " thermistor practical technique (a PTC piece of writing) " according to different purposes to PTCR, clock rosy clouds chief editor, publishing house of Chengdu Univ. of Science ﹠ Technology, 1994).
Discover that DC electromagnet needs bigger electric current could start adhesive in the initial moment of energising, once adhesive only needs less electric current can keep attracting state later on.The use of DC electromagnet at present all is to adopt the working method that magnetizing coil is directly applied rated voltage, because the magnetizing coil D.C. resistance is certain.Applied voltage is certain, pass to rated current when then working in the coil all the time, thereby power is constant, and in fact a large amount of electric energy are to be wasted.
Summary of the invention
The purpose of this utility model just provides a kind of improved DC electromagnet, in use can save electric energy.
To achieve these goals, the technical solution of the utility model is: energy-saving DC electromagnet, it comprises iron core, armature mechanism, magnetizing coil L, and magnetizing coil L is characterized in that on iron core: magnetizing coil L is connected with DC power supply DCV with semistor RT series connection back.
The utility model is work like this: magnetizing coil L and semistor Rt series connection, after adding rated direct voltage DVC, because in the initial moment that applies voltage, the resistance value of semistor Rt is less under the normal temperature, loop current is bigger, and electromagnetic actuation starts.Through behind the certain hour because the electric current that semistor Rt passes through makes semistor Rt self-heating, it is big that its resistance value becomes, thereby loop current is reduced to a certain degree automatically and tends towards stability.Required electric current is big constantly because DC electromagnet has startup, start adhesive and keep the characteristic that electric current can be less later on, so the utility model can be realized purpose of energy saving.
Description of drawings
Fig. 1 is a structural representation of the present utility model, (not drawing iron core, armature mechanism among the figure, because of being known technology).
Among the figure: L is the magnetizing coil of DC electromagnet, and Rt is semistor (PTCR), and DVC is an external dc power supply.
Embodiment
As shown in Figure 1, energy-saving DC electromagnet, it comprises iron core, armature mechanism, magnetizing coil L, semistor RT, and magnetizing coil L is on iron core, and magnetizing coil L directly is connected with DC power supply DCV with semistor RT series connection back.
The iron core of DC electromagnet, armature mechanism are known technologies.The production method of semistor (PTCR) Rt is a known technology.The semistor Rt of magnetizing coil L that transforms and selection suitable parameters (or other becomes resistance components and parts automatically) series connection adds rated direct voltage DVC.
The utility model application example 1:
A MFZ1-7YC type DC electromagnetic valve (Earthquake of Anyang station in Henan machine tool ﹠ electrical appliances factory product), this DC electromagnetic valve is made up of DC electromagnet and valve.Its magnetizing coil resistance R=15 Ω, rated current voltage V=24 volt, the energising rear electromagnetic valve starts adhesive, and actual measurement operating current I=1.6A calculates long-term work, power consumption W=IV=1.6*24=38 (watt)
The utility model adopts identical electromagnetically operated valve, valve body is constant only makes appropriate reconstruction with magnetizing coil L, and select for use thermistor (PTCR) Rt of a suitable parameters to connect according to Fig. 1, add rated voltage V=24 volt equally, the initial moment electromagnetically operated valve of switching on starts adhesive, actual measurement operating current I=1.5A, interior electric current decline in 2 seconds subsequently also tends towards stability about I=0.2A, and electromagnetically operated valve still keeps attracting state.
Calculate electromagnetically operated valve start power consumption constantly be W=IV=1.5*24=36 (watt)
Calculating long-term work power consumption W=IV=0.2*24=4.8 (watt)
The long-term power consumption of the utility model in this example＜5 watts, relatively 38 watts of the energy consumptions of existing product are obvious energy-conservation.
The utility model application example 2:
A ZX-1 type gas heater gas electromagnetic valve (Shuande, Guangdong star prestige electronics corporation product), this gas electromagnetic valve is made up of valve and DC electromagnet.Its magnetizing coil is divided into two groups, and one group is called actuating coil, and one group is called hold-in winding, 3 volts of rated direct voltages (powered battery).Actuating coil and hold-in winding are switched on simultaneously during startup work, and at this moment, electric current is bigger, electromagnetic actuation is opened burnt gas valve, actuating coil outage after about 1.8 seconds, and hold-in winding continues energising, the less valve open state of keeping of electric current this moment, the effect of hold-in winding is exactly energy-conservation.The shortcoming of this kind electromagnetically operated valve is to adopt two groups of magnetizing coils, and power on/off control realizes that by electronic circuit cost is higher.
The utility model adopts identical gas electromagnetic valve, valve body is constant, only with the magnetizing coil transformation of the way,, and select thermistor (PTCR) RT of a suitable parameters for use only with one group of magnetizing coil L, connect according to Fig. 1, add rated direct voltage v=3 volt equally, switch on the initial moment, electromagnetically operated valve starts adhesive, open valve, actual measurement operating current I=0.5A.After 2 seconds, about actual measurement operating current I=0.1A, electromagnetically operated valve still stays open state.
The utility model is suitable with the existing product energy consumption in this example, but because only with one group of magnetizing coil, and can also simplify at the control circuit that is used for gas heater, so the cost reduction.
Claims (1)
1. energy-saving DC electromagnet, it comprises iron core, armature mechanism, magnetizing coil (L), magnetizing coil (L) is characterized in that on iron core: magnetizing coil (L) is connected with DC power supply (DCV) with semistor (RT) series connection back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520096622 CN2796041Y (en) | 2005-06-02 | 2005-06-02 | Energy saving type DC electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520096622 CN2796041Y (en) | 2005-06-02 | 2005-06-02 | Energy saving type DC electromagnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2796041Y true CN2796041Y (en) | 2006-07-12 |
Family
ID=36813792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520096622 Expired - Fee Related CN2796041Y (en) | 2005-06-02 | 2005-06-02 | Energy saving type DC electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2796041Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993790A (en) * | 2017-12-28 | 2018-05-04 | 吉林同鑫管业有限公司 | A kind of steel pipe processes continuous demagnetization device |
-
2005
- 2005-06-02 CN CN 200520096622 patent/CN2796041Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993790A (en) * | 2017-12-28 | 2018-05-04 | 吉林同鑫管业有限公司 | A kind of steel pipe processes continuous demagnetization device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |