Hand-held power tool and method for operating a heating device of a hand-held power tool
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01K-015/00
F02C-006/00
H02K-007/18
H02P-009/00
출원번호
UP-0836162
(2007-08-09)
등록번호
US-7816796
(2010-11-08)
우선권정보
DE-10 2006 037 572(2006-08-11)
발명자
/ 주소
Leufen, Heinrich
Walter, Rolf
Berkenkamp, Fried
출원인 / 주소
Andreas Stihl AG & Co. KG
대리인 / 주소
Huckett, Gudrun E.
인용정보
피인용 횟수 :
1인용 특허 :
7
초록▼
A hand-held power tool has a drive motor driving a tool and a generator. One or more heating devices having one or more heating elements are provided. The generator supplies the one or more heating devices with energy. A control device controls a power supplied to the one or more heating elements as
A hand-held power tool has a drive motor driving a tool and a generator. One or more heating devices having one or more heating elements are provided. The generator supplies the one or more heating devices with energy. A control device controls a power supplied to the one or more heating elements as a function of at least one operating parameter of the drive motor.
대표청구항▼
What is claimed is: 1. A hand-held power tool comprising: a drive motor, a tool driven by said drive motor; a generator driven by said drive motor, wherein a power provided by said generator increases as an engine speed of said drive motor increases; one or more heating devices comprising one or mo
What is claimed is: 1. A hand-held power tool comprising: a drive motor, a tool driven by said drive motor; a generator driven by said drive motor, wherein a power provided by said generator increases as an engine speed of said drive motor increases; one or more heating devices comprising one or more heating elements, wherein said generator supplies said one or more heating devices with energy; a control device controlling a power supplied to at least one of said one or more heating elements as a function of said engine speed of said drive motor; wherein the power supplied to said at least one heating element is reduced as a function of said engine speed relative to the power provided by said generator. 2. The power tool according to claim 1, wherein said one or more heating devices have a temperature sensor for a temperature-dependent control of said power. 3. The power tool according to claim 2, wherein said temperature sensor is an NTC resistor. 4. The power tool according to claim 2, wherein said temperature sensor is arranged at a spacing from said one or more heating elements. 5. The power tool according to claim 1, wherein said drive motor is an internal combustion engine comprising a carburetor and wherein one of said one or more heating devices is a carburetor heater. 6. The power tool according to claim 5, wherein said one or more heating devices have a temperature sensor for a temperature-dependent control of said power and wherein said temperature sensor is connected to said carburetor by a contact surface providing a thermally conducting connection. 7. The power tool according to claim 1, comprising at least one handle for guiding the power tool, wherein one of said one or more heating devices is a handle heater. 8. The power tool according to claim 1, wherein said power increases with increasing engine speed of said drive motor. 9. The power tool according to claim 1, wherein the power supplied to said at least one heating element is reduced above a limit value of said engine speed. 10. A hand-held power tool comprising: a drive motor; a tool driven by said drive motor; a generator driven by said drive motor; one or more heating devices comprising one or more heating elements, wherein said generator supplies said one or more heating devices with energy; a control device controlling a power supplied to at least one of said one or more heating elements as a function of at least one operating parameter of said drive motor; wherein said drive motor is an internal combustion engine comprising a carburetor and wherein one of said one or more heating devices is a carburetor heater; wherein said one or more heating devices have a temperature sensor for a temperature-dependent control of said power and wherein said temperature sensor is connected to said carburetor by a contact surface providing a thermally conducting connection; wherein said temperature sensor has a cover that thermally shields said temperature sensor except said contact surface. 11. The power tool according to claim 10, wherein said cover is a plastic cap. 12. The power tool according to claim 10, comprising a support wherein said control device and said temperature sensor are arranged on said support and wherein said cover is connected to said support by a snap-on connection. 13. A method for operating a heating device of a hand-held power tool comprising a drive motor, a tool driven by the drive motor, a generator driven by the drive motor, one or more heating devices each comprising one or more heating elements, wherein the generator supplies energy to the one or more heating devices; said method comprising the step of: controlling a power supplied by a generator to at least one of the heating elements as a function of an engine speed of the drive motor and reducing the power supplied to the at least one heating element as a function of the engine speed relative to the power provided by the generator. 14. The method according to claim 13, wherein, in the step of controlling, the power is reduced above a limit value. 15. The method according to claim 13, wherein the engine speed is derived from a voltage signal of the generator. 16. The method according to claim 13, wherein the at least one operating parameter is a temperature measured by a temperature sensor. 17. A method for operating a heating device of a hand-held power tool comprising a drive motor, a tool driven by the drive motor, a generator driven by the drive motor, one or more heating devices each comprising one or more heating elements, wherein the generator supplies energy to the one or more heating devices; said method comprising the step of: controlling a power supplied by a generator to at least one of the heating elements as a function of at least one operating parameter of the drive motor, wherein, in the step of controlling, every other half wave of a voltage signal generated by the generator is blocked from being supplied to the at least one heating element when a limit value of the at least one operating parameter is surpassed. 18. The method according to claim 17, wherein, in the step of controlling, phase control is used on the voltage signal generated by the generator.
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이 특허에 인용된 특허 (7)
De Cosimo Michael J. (c/o George Spector ; 3615 Woolworth Bldg ; 233 Broadway New York NY 10007), Complete system for a home air heating and cooling, hot and cold water, and electric power.
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