CN103811146A - Direct current electromagnet - Google Patents
Direct current electromagnet Download PDFInfo
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- CN103811146A CN103811146A CN201410045948.9A CN201410045948A CN103811146A CN 103811146 A CN103811146 A CN 103811146A CN 201410045948 A CN201410045948 A CN 201410045948A CN 103811146 A CN103811146 A CN 103811146A
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- coil
- electromagnet
- iron core
- direct current
- relay switch
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Abstract
The invention provides a direct current electromagnet which comprises a coil, an iron core arranged in the coil in a sleeved mode, a reset spring arranged at one end of the iron core in a sleeved mode and a limiting backseat. The coil, the iron core, the reset spring and the limiting backseat are arranged coaxially. The direct current electromagnet is characterized in that the direct current electromagnet further comprises a closed shell and a relay switch, the coil comprises a first coil body and a second coil body, normal close contacts of the relay switch are connected to the two ends of the second coil body, and the first coil body and the second coil body are connected through a heat protector. According to the direct current electromagnet, the two coil bodies are adopted so that the direct current electromagnet can work continuously for a long time and large operation tensile force can be provided; the two coil bodies are connected through the heat protector so that the direct current electromagnet can work safely in the high-temperature operation environment for a long time; the closed shell is adopted so that the strength and the waterproof performance of the direct current electromagnet can be guaranteed and the direct current electromagnet can work in the humid environment for a long time.
Description
Technical field
The present invention relates to a kind of DC electromagnet, relate in particular to a kind of DC electromagnet of continuous firing.
Background technology
Refrigerator car is the closed transport van for transporting freezing or fresh-keeping goods, that the refrigerating plant of refrigerating units and the refrigeration special transport automobile in the heat insulation railway carriage or compartment of polyurethane are housed, be usually used in transporting frozen food (van cooler), dairy produce (milk products transport vehicle), vegetable and fruit (fresh goods transport vehicle), vaccine medicine (vaccine transport vehicle) etc.
Refrigerator car is made up of parts such as moisture recorders in running gear, heat-insulation and heat-preservation envelope, refrigerating units and the compartment of special-purpose automobile chassis, heat-insulation and heat-preservation envelope is for the heat-insulation and heat-preservation of refrigerator car, formed color steel, the formations such as stainless steel by polyurethane material, fiberglass; Refrigerating units, for the refrigeration of refrigerator car, is divided into free-standing unit and dependent formula unit, and difference is that independent unit carrys out work by diesel power generation, but not independent unit is to drive refrigerating units work by the engine operation of car load.
Refrigerator car generally adopts external refrigerating units, thereby refrigerating units is operated in the environment of humidity, high temperature, vibrations.For free-standing unit, startup control and the Throttle Opening Control of diesel engine adopt DC electromagnet conventionally.And existing DC electromagnet, and be not suitable for humidity, the high temperature of refrigerator car, the environment of vibrations.
The existing DC electromagnet operating time is generally instantaneous, and refrigerating units need to be worked several hours conventionally, thereby the throttle of diesel engine needs within several hours, stay open state, and this just requires the DC electromagnet can long time continuous working; Existing DC electromagnet working pulling force is little, be generally no more than 6kg, and refrigerator car in the process of moving, due to itself vibrations and jolting of causing of Uneven road, very easily causes the relay of DC electromagnet to throw off, so that burns coil; Existing DC electromagnet water resistance is poor in addition, and no matter frame-type or closed, does not almost have waterproof ability, is not suitable for moist operational environment yet.
Therefore, those skilled in the art is devoted to develop a kind of long time continuous working, working pulling force greatly and the DC electromagnet of waterproof.
Summary of the invention
When DC electromagnet starts, need larger electric current, but large electric current can produce a large amount of heat, can not long time continuous working, thereby adopt one group of coil cannot meet long time continuous working requirement.
Adopt two groups of coils, first group of coil adopts thick enamelled wire, produces larger electric current, and as initial pull coil, second group of coil adopts thin enamelled wire, because resistance is large, electric current is less, and can long time continuous working.
The electromagnetic force of DC electromagnet and the number of turn of coil are directly proportional in addition, increase the number of turn of second group of coil, can increase the working pulling force of running hours.
Therefore, the two pulling force not only producing while simultaneously work is large, and continuous firing heating is low, thereby can meet the control requirement of the diesel engine of refrigerating machine of refrigerated truck group.
The invention provides a kind of DC electromagnet; DC electromagnet comprises coil, is set in the iron core in coil, the return spring that is set in iron core one end and spacing back seat; coil, iron core, return spring and spacing back seat coaxially arrange; it is characterized in that; DC electromagnet also comprises closure and relay switch; coil comprises the first coil and the second coil, and the normally-closed contact of relay switch is connected to the two ends of the second coil, and the first coil is connected by thermal protector with the second coil.
DC electromagnet provided by the invention, adopts two groups of coils, and large working pulling force is provided; Between two groups of coils, connect by thermal protector, make DC electromagnet can be in high-temperature work environment long-time, trouble free service; Adopt closure, to guarantee intensity and the water proofing property of DC electromagnet, make DC electromagnet long-term work in a humid environment.
Further, in the time that DC electromagnet powers up, the first coil is in running order; Move when the magnetic field that the first coil produces drives iron core, while pressing relay switch, normally-closed contact is in off-state, and the first coil and the second coil are simultaneously in running order.
DC electromagnet provided by the invention, is converted to the state of one group of coil working by relay switch the state of two groups of coil workings.
Further, the wire diameter of the first coil is greater than the wire diameter of the second coil, and the wire diameter of the first coil is larger, and resistance is less, can produce larger electric current, thereby larger initial pulling force is provided.
Further, the number of turn of the first coil is less than the number of turn of the second coil, and the electromagnetic force of DC electromagnet is directly proportional to the number of turn of coil, increases the number of turn of second group of coil, can increase the working pulling force of running hours.
Further, when DC electromagnet power-off, return spring playbacks iron core, unclamps relay switch, closed normally-closed contact, and the state of recovery DC electromagnet, if while again powering up, only has one group of coil working.
Further, a through hole is set on spacing back seat.
Further, the diameter of the through hole of spacing back seat is greater than the diameter of one end of the sheathed return spring of iron core, is less than the external diameter of return spring.
Further, coil also comprises coil rack, and coil rack is the hollow cylindrical that two ends have bead, and bead adopts steel to do, and hollow cylindrical is brass tube.
Further, closure comprises case, rubber ring, sealing ring and bonnet, and case and bonnet are tightly connected, and to guarantee intensity and the water proofing property of DC electromagnet, makes DC electromagnet long-term work in a humid environment.
Further, sealing ring adopts sulfuration silica gel to make.The sealing ring that sulfuration silica gel is made has good high and low temperature resistance, can within the scope of-60～250 ℃, use for a long time, and also has good electrical insulation properties, ability ozone, weather-resistant, hydrophobic, protection against the tide, and have good physiology inertia, thereby assurance DC electromagnet is worked for a long time in the environment of humidity, high temperature.
Compared with prior art, DC electromagnet provided by the invention, has following beneficial effect:
(1) adopt two groups of coils, can long time continuous working, large working pulling force is provided simultaneously;
Between (2) two groups of coils, connect by thermal protector, make DC electromagnet can be in high-temperature work environment long-time, trouble free service;
(3) adopt closure, adopt sulfuration silica gel to make sealing ring, guarantee intensity and the water proofing property of DC electromagnet, DC electromagnet can be worked for a long time in the environment of humidity, high temperature.
Accompanying drawing explanation
Fig. 1 is the exploded view of the DC electromagnet in one embodiment of the present of invention;
Fig. 2 is the perspective view of the DC electromagnet shown in Fig. 1;
Fig. 3 is the winding wiring figure of the DC electromagnet shown in Fig. 1.
Embodiment
As Fig. 1, shown in Fig. 2, DC electromagnet in one embodiment of the present of invention, comprise coil 3, be set in the iron core 4 in coil, be set in return spring 5 and the spacing back seat 6 of iron core one end, coil 3, iron core 4, return spring 5 and spacing back seat 6 coaxially arrange, it is characterized in that, DC electromagnet also comprises closure and relay switch 7, as shown in Figure 3, coil 3 comprises the first coil 31 and the second coil 32, the normally-closed contact 71 of relay switch 7 is connected to the two ends of the second coil 32, the first coil 31 is connected by thermal protector 33 with the second coil 32.
DC electromagnet in the present embodiment, adopts two groups of coils, and large working pulling force is provided; Between two groups of coils, connect by thermal protector 33, make DC electromagnet can be in high-temperature work environment long-time, trouble free service; Adopt closure, to guarantee intensity and the water proofing property of DC electromagnet, make DC electromagnet long-term work in a humid environment.
In the time that DC electromagnet powers up, the first coil 31 is in running order; Move axially when the magnetic field that the first coil 31 produces drives iron core 4, while pressing relay switch 7, normally-closed contact 71 is in off-state, and the first coil 31 and the second coil 32 are simultaneously in running order.
DC electromagnet in the present embodiment, the state of one group of coil 31 being worked by relay switch 7 is converted to the state of two groups of coil workings.
The wire diameter of the first coil 31 is greater than the wire diameter of the second coil 32.DC electromagnet in the present embodiment, the wire diameter of the first coil 31 is 1.25mm, the wire diameter of the second coil 32 is 0.41mm.
The number of turn of the first coil 31 is less than the number of turn of the second coil 32.DC electromagnet in the present embodiment, the number of turn of the first coil 31 is 360 circles, the number of turn of the second coil 32 is 1000 circles.
When DC electromagnet power-off, return spring 5 playbacks iron core 4, unclamps relay switch 7, closed normally-closed contact 71, and the state of recovery DC electromagnet, in the time again powering up, only has one group of coil working.
Spacing back seat 6 limits the moving range of iron core 4.
Coil 3 also comprises coil rack, and coil rack is the hollow cylindrical that two ends have bead, and bead adopts steel to do, and hollow cylindrical is brass tube.
Closure comprises case 2, rubber ring 1, sealing ring 8 and bonnet 9, and case 2 is tightly connected with bonnet 9, to guarantee intensity and the water proofing property of DC electromagnet, makes DC electromagnet long-term work in a humid environment.
DC electromagnet in the present embodiment, case 2, iron core 4, spacing back seat 6 and bonnet 9, all adopt steel to do, and guarantees the intensity of DC electromagnet.
Sealing ring 8 adopts sulfuration silica gel to make, the sealing ring that sulfuration silica gel is made has good high and low temperature resistance, can within the scope of-60～250 ℃, use for a long time, and also has good electrical insulation properties, ability ozone, weather-resistant, hydrophobic, protection against the tide, and have good inertia, thus assurance DC electromagnet is worked for a long time in the environment of humidity, high temperature.
Lead-out wire adopts resistant to elevated temperatures Teflon silver jacketed wire, and external diameter is 2mm, and internal diameter is 1.22mm, and model is 19X0.26, and resistance to more than 200 ℃ high temperature guarantees that DC electromagnet can work for a long time in the environment of high temperature.
DC electromagnet parameter in the present embodiment is as follows:
1, overall dimension: Φ 71*208.5mm
2, operating voltage: 12V
3, stroke: >=20mm
4, pulling force: >=30kg
5, heatproof: 100 ℃
6, the operating time: >=4 hours
The course of work of the DC electromagnet in the present embodiment is as follows:
When energising, the first coil 31 is worked, the magnetic field being produced by the first coil 31, drive iron core 4 to move backward, move rear shake-up relay switch 7 after iron core 4, normally-closed contact 71 disconnects, the first coil 31 and the second coil 32 are worked simultaneously, produce large working pulling force, reach work object.After power-off, by return spring 5, iron core 4 is playbacked, normally-closed contact 71 closures, restPose.
DC electromagnet provided by the invention, adopts two groups of coils, can long time continuous working, large working pulling force is provided simultaneously; Between two groups of coils, connect by thermal protector, make DC electromagnet can be in high-temperature work environment long-time, trouble free service; Adopt closure, adopt sulfuration silica gel to make sealing ring, guarantee intensity and the water proofing property of DC electromagnet, DC electromagnet can be worked for a long time in the environment of humidity, high temperature.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just can design according to the present invention make many modifications and variations without creative work.Therefore, all technical staff in the art, all should be in by the determined protection range of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (10)
1. a DC electromagnet; described DC electromagnet comprises coil, is set in the iron core in described coil, the return spring that is set in described iron core one end and spacing back seat; described coil, described iron core, described return spring and described spacing back seat coaxially arrange; it is characterized in that; described DC electromagnet also comprises closure and relay switch; described coil comprises the first coil and the second coil; the normally-closed contact of described relay switch is connected to the two ends of described the second coil, and described the first coil is connected by thermal protector with described the second coil.
2. DC electromagnet as claimed in claim 1, is characterized in that, in the time that described DC electromagnet powers up, described the first coil is in running order; The magnetic field producing when described the first coil drives described iron core to move axially, and while pressing described relay switch, described normally-closed contact is in off-state, and described the first coil and described the second coil are simultaneously in running order.
3. DC electromagnet as claimed in claim 1, is characterized in that, the wire diameter of described the first coil is greater than the wire diameter of described the second coil.
4. DC electromagnet as claimed in claim 1, is characterized in that, the number of turn of described the first coil is less than the number of turn of described the second coil.
5. DC electromagnet as claimed in claim 1, is characterized in that, when described DC electromagnet power-off, described return spring playbacks described iron core, unclamps described relay switch, closed described normally-closed contact.
6. DC electromagnet as claimed in claim 1, is characterized in that, a through hole is set on described spacing back seat.
7. DC electromagnet as claimed in claim 6, is characterized in that, the diameter of the through hole of described spacing back seat is greater than the diameter of one end of the sheathed described return spring of described iron core, is less than the external diameter of described return spring.
8. DC electromagnet as claimed in claim 1, is characterized in that, described coil also comprises coil rack, and described coil rack is the hollow cylindrical that two ends have bead, and described bead is that steel is made, and described hollow cylindrical is brass tube.
9. DC electromagnet as claimed in claim 1, is characterized in that, described closure comprises case, rubber ring, sealing ring and bonnet, and described case and described bonnet are tightly connected.
10. DC electromagnet as claimed in claim 9, is characterized in that, described sealing ring adopts sulfuration silica gel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410045948.9A CN103811146A (en) | 2014-02-08 | 2014-02-08 | Direct current electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410045948.9A CN103811146A (en) | 2014-02-08 | 2014-02-08 | Direct current electromagnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103811146A true CN103811146A (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410045948.9A Pending CN103811146A (en) | 2014-02-08 | 2014-02-08 | Direct current electromagnet |
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| Country | Link |
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| CN (1) | CN103811146A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669111A (en) * | 2015-02-16 | 2015-06-03 | 湖州美泰电气科技有限公司 | Electromagnetic sucker device with constant temperature control function |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112405A (en) * | 1976-08-16 | 1978-09-05 | Mark Joseph | Coil with protection against overheating |
| CN2077154U (en) * | 1990-10-31 | 1991-05-15 | 张家政 | Axial sliding energy-saving electromagnet |
| CN2111420U (en) * | 1992-01-29 | 1992-07-29 | 许渭清 | Straightway steam electromagnetic valve with filter |
| CN2382125Y (en) * | 1999-08-24 | 2000-06-07 | 邵国哲 | Energy saving contactor |
| CN201038080Y (en) * | 2007-03-08 | 2008-03-19 | 贵州航天电器股份有限公司 | Double coil magnetic path device with assistant contact |
| CN101261909A (en) * | 2008-04-24 | 2008-09-10 | 丹东星光电器有限公司 | Dual-control energy-saving relay |
| CN201247743Y (en) * | 2008-07-25 | 2009-05-27 | 陈军锋 | Electromagnetic switch |
-
2014
- 2014-02-08 CN CN201410045948.9A patent/CN103811146A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112405A (en) * | 1976-08-16 | 1978-09-05 | Mark Joseph | Coil with protection against overheating |
| CN2077154U (en) * | 1990-10-31 | 1991-05-15 | 张家政 | Axial sliding energy-saving electromagnet |
| CN2111420U (en) * | 1992-01-29 | 1992-07-29 | 许渭清 | Straightway steam electromagnetic valve with filter |
| CN2382125Y (en) * | 1999-08-24 | 2000-06-07 | 邵国哲 | Energy saving contactor |
| CN201038080Y (en) * | 2007-03-08 | 2008-03-19 | 贵州航天电器股份有限公司 | Double coil magnetic path device with assistant contact |
| CN101261909A (en) * | 2008-04-24 | 2008-09-10 | 丹东星光电器有限公司 | Dual-control energy-saving relay |
| CN201247743Y (en) * | 2008-07-25 | 2009-05-27 | 陈军锋 | Electromagnetic switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669111A (en) * | 2015-02-16 | 2015-06-03 | 湖州美泰电气科技有限公司 | Electromagnetic sucker device with constant temperature control function |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |