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목차
- 바이메탈(Bimetal)이란?
- 바이메탈의 원리
- 자동온도조절의 필요성
- 바이메탈
- 금속의 팽창
- 관련 문제
- Bimetal 이란 ?
- 바이메탈의 사용처
- 바이메탈의 원리
- 자동온도조절의 필요성
- 바이메탈
- 금속의 팽창
- 관련 문제
- Bimetal 이란 ?
- 바이메탈의 사용처
본문내용
gulators for twilight switches etc.
Time limiting and control
as in toasters, cigar lighters, fluorescent lamp starters and staircase lighting switches.
Safety function
as overload protection of electric motors, transformers and wiring, overheating protection in the windings of electric machines and transformers, in gas safety pilot elements, as thermal cut-outs against non-permittable heating in devices and in fire alarms.
Temperature compensation in measuring devices and control units, as for compensation of fluctuating room temperature.
The thermostatic bimetal can be heated in different ways:
Heat transmission by conduction, where the bimetal is in direct contact with the source of heat or the medium to be controlled.
Heat transmission by radiation or convection.
Heat developed by passage of electric current, where the bimetal itself serves as resistance and thus as the source of heat.
Indirect electric heating by means of a heating element made of BIMETAL wire, ribbon or strip.
The function of bimetal can be utilized to produce a force, a movement or a combination of both. By using stacks of bimetal strips a relatively great force is obtained by a large movement. Parts of heating elements or shunts can be inserted between the bimetal layers. Disadvantages are friction between adjacent layers and risk of corrosion.
When mercury relays, micros witches or spring contact systems are used as switching units for an electric circuit, these are usually operated by means of a thermostatic bimetal. By energy accumulation in spring or magnetic systems, rapid switching action can be obtained, thereby ensuring make and break contact without flutter or disturbance. A thermostatic bimetal which acts as a direct switching device has a slow action unless it is specially shaped.
Time limiting and control
as in toasters, cigar lighters, fluorescent lamp starters and staircase lighting switches.
Safety function
as overload protection of electric motors, transformers and wiring, overheating protection in the windings of electric machines and transformers, in gas safety pilot elements, as thermal cut-outs against non-permittable heating in devices and in fire alarms.
Temperature compensation in measuring devices and control units, as for compensation of fluctuating room temperature.
The thermostatic bimetal can be heated in different ways:
Heat transmission by conduction, where the bimetal is in direct contact with the source of heat or the medium to be controlled.
Heat transmission by radiation or convection.
Heat developed by passage of electric current, where the bimetal itself serves as resistance and thus as the source of heat.
Indirect electric heating by means of a heating element made of BIMETAL wire, ribbon or strip.
The function of bimetal can be utilized to produce a force, a movement or a combination of both. By using stacks of bimetal strips a relatively great force is obtained by a large movement. Parts of heating elements or shunts can be inserted between the bimetal layers. Disadvantages are friction between adjacent layers and risk of corrosion.
When mercury relays, micros witches or spring contact systems are used as switching units for an electric circuit, these are usually operated by means of a thermostatic bimetal. By energy accumulation in spring or magnetic systems, rapid switching action can be obtained, thereby ensuring make and break contact without flutter or disturbance. A thermostatic bimetal which acts as a direct switching device has a slow action unless it is specially shaped.
- 가격2,000원
- 페이지수8페이지
- 등록일2012.03.13
- 저작시기2008.01
- 파일형식한글(hwp)
- 자료번호#777998
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