Direct current electromagnet

A DC electromagnet and iron core technology, applied in the field of DC electromagnets, can solve the problems of inability to meet the requirements of long-term continuous work and can not work continuously for a long time, achieve large working tension, ensure strength and waterproofness, and increase working tension. Effect

Inactive Publication Date: 2014-05-21
SHANGHAI KUKAI REFRIGERATION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The DC electromagnet needs a large current when it is started, but the large current will generate a lot of heat and cannot work continuously for a long time, so the use of a set of coils cannot meet the long-term continuous work requirements

Method used

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Examples

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Embodiment Construction

[0030] Such as figure 1 , figure 2 As shown, the DC electromagnet in one embodiment of the present invention includes a coil 3, an iron core 4 sleeved in the coil, a return spring 5 sleeved at one end of the iron core and a position-limiting rear seat 6, the coil 3, the iron core Core 4, return spring 5 and limit rear seat 6 are coaxially arranged, and it is characterized in that, DC electromagnet also includes closed shell and relay switch 7, as image 3 As shown, the coil 3 includes a first coil 31 and a second coil 32, the normally closed contact 71 of the relay switch 7 is connected to both ends of the second coil 32, and the first coil 31 and the second coil 32 are connected through a thermal protector 33 .

[0031] The DC electromagnet in this embodiment adopts two groups of coils to provide a large working tension; the two groups of coils are connected through a thermal protector 33, so that the DC electromagnet can work safely for a long time in a high-temperature w...

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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 [0001] The invention relates to a direct current electromagnet, in particular to a continuously working direct current electromagnet. Background technique [0002] A refrigerated truck is a closed van transport vehicle used to transport frozen or fresh goods. It is a special refrigerated transport vehicle equipped with a refrigeration unit and a polyurethane insulated compartment. It is often used to transport frozen food (refrigerated vehicles), dairy products (milk transport vehicle), vegetables and fruits (fresh goods transport vehicle), vaccines and medicines (vaccine transport vehicle), etc. [0003] The refrigerated truck is composed of the walking part of the special vehicle chassis, the heat insulation compartment, the refrigeration unit, and the temperature recorder in the compartment. The heat insulation compartment is used for the heat insulation and heat preservation of the refrigerated vehicle. Composed of steel plates, stainless steel, etc.; th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F7/06H01F7/20H01F5/00
Inventor 徐靖刘晓维
Owner SHANGHAI KUKAI REFRIGERATION EQUIP
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