IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0437288
(2012-04-02)
|
등록번호 |
US-8689780
(2014-04-08)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
8 |
초록
▼
A low pressure forced air heater is provided having a variable speed motor driving a fan and a compressor. An amount of the pneumatic output from the compressor is communicated through an air bleed valve and the remainder is communicated through an air output orifice. The air output orifice is in co
A low pressure forced air heater is provided having a variable speed motor driving a fan and a compressor. An amount of the pneumatic output from the compressor is communicated through an air bleed valve and the remainder is communicated through an air output orifice. The air output orifice is in communication with a fuel nozzle and causes fuel to be drawn from a tank, atomized and combusted in a combustion chamber.
대표청구항
▼
1. A low pressure forced air heater, comprising: a variable output fan;a variable output air compressor;a variable speed motor driving said fan and said air compressor;a fuel nozzle having a fuel orifice, an air orifice, and an output orifice;an air output orifice and an air bleed valve each in comm
1. A low pressure forced air heater, comprising: a variable output fan;a variable output air compressor;a variable speed motor driving said fan and said air compressor;a fuel nozzle having a fuel orifice, an air orifice, and an output orifice;an air output orifice and an air bleed valve each in communication with a pneumatic output of said air compressor;wherein said air bleed valve is capable of venting a first portion of said pneumatic output and allowing a second portion of said pneumatic output to pass through said air output orifice;said air orifice of said fuel nozzle being in communication with said second portion of said pneumatic output of said air output orifice and wherein said fuel orifice being in communication with a fuel tank;a combustion chamber, said combustion chamber operably positioned to receive output from said output orifice of said fuel nozzle and output communicated from said fan;an igniter, operably positioned proximal to said fuel nozzle; andsaid variable speed motor having a first speed and a second speed, wherein said first speed is greater than said second speed, when at said first speed said air orifice of said fuel nozzle operates at a first pressure and when at said second speed said air orifice of said fuel nozzle operates at a second pressure, wherein said first pressure and said second pressure are relative to said second portion of said pneumatic output unvented by said air bleed valve. 2. The low pressure forced air heater of claim 1, wherein said air bleed valve includes an orifice at least partially housing an adjustable stem. 3. The low pressure forced air heater of claim 2, wherein said stem has at least one orifice therethrough, said at least one orifice being in communication with an external environment and with said orifice housing. 4. The low pressure forced air heater of claim 3, wherein said stem is threadably housed in said orifice and wherein threaded adjustment of said stem causes said first portion of said pneumatic output capable of passing through said at least one orifice of said stem to vary. 5. The low pressure forced air heater of claim 1, wherein said air bleed valve is adjusted so as to allow said second portion of said pneumatic output to pass through said air output orifice when said variable speed motor is operated at a designated speed. 6. The low pressure forced air heater of claim 1, wherein said air output orifice is integrally formed with said air bleed valve. 7. The low pressure forced air heater of claim 1, wherein said air output orifice is integrally formed with said air compressor. 8. The low pressure forced air heater of claim 7, wherein said air bleed valve is integrally formed with said air compressor. 9. The low pressure forced air heater of claim 1, wherein said first pressure is different from said second pressure. 10. A low pressure forced air heater, comprising: a variable speed motor, said variable speed motor driving a fan and an air compressor, said air compressor having an output;a pressure cavity in communication with said output of said air compressor;an air output orifice and an air bleed valve in communication with said pressure cavity to allow a portion of said output to pass through said air output orifice;a fuel nozzle having a fuel orifice, an air orifice, and an output orifice, wherein said air orifice of said fuel nozzle being in communication with said portion of said output passing through said air output orifice and wherein said fuel orifice being in communication with a fuel tank;a combustion chamber, said combustion chamber operably positioned to receive output from said output orifice of said fuel nozzle and output communicated from said fan;an igniter, operably positioned proximal to said fuel nozzle;a control, said control being in electrical communication with a sensor element and said variable speed motor; andwherein said control operable to modify the speed of said variable speed motor based at least partially on input received from said sensor element. 11. The low pressure forced air heater of claim 10, wherein said air bleed valve includes an orifice at least partially housing an adjustable stem. 12. The low pressure forced air heater of claim 11, wherein said stem has at least one orifice therethrough, said at least one orifice being in communication with an external environment and with said orifice housing. 13. The low pressure forced air heater of claim 12, wherein said stem is threadably housed in said orifice and wherein threaded adjustment of said stem causes the amount of air capable of passing through said at least one orifice of said stem to vary. 14. The low pressure forced air heater of claim 10, wherein said air bleed valve is a ball valve. 15. The low pressure forced air heater of claim 10, wherein said air bleed valve is adjusted so as to allow said portion of said output to pass through said air output orifice when said variable speed motor is operated at a designated speed. 16. The low pressure forced air heater of claim 10, wherein said pressure cavity is integrally formed with said air compressor. 17. The low pressure forced air heater of claim 10, wherein said pressure cavity is an air line. 18. The low pressure forced air heater of claim 10, wherein said variable speed motor is two variable speed motors acting in substantial unison. 19. A low pressure forced air heater, comprising: a variable speed motor driving a fan and a compressor;said compressor having a pneumatic output through an air output orifice and an air bleed valve, wherein said air bleed valve varies said pneumatic output through said air output orifice;said pneumatic output through said air output orifice being in communication with a fuel nozzle;said fuel nozzle also being in communication with a fuel tank;wherein said variable speed motor varies the rotational fan speed of said fan between at least a first speed and a second speed and said pneumatic output to said fuel nozzle through said air output orifice between a first pressure and a second pressure, respectively, correspondingly in tandem relative to said pneumatic output through said air bleed valve to vary the heat output of said low pressure forced air heater. 20. The low pressure forced air heater of claim 19, wherein said low pressure forced air heater has a combustion chamber positioned to receive output from said fuel nozzle and said fan, said variable speed motor maintaining a substantially constant air to fuel ratio within said combustion chamber during operation of said low pressure forced air heater and throughout a range of speeds of said variable speed motor. 21. The low pressure forced air heater of claim 20, wherein the status and speed of said variable speed motor are determined by output of a control in electrical communication with said variable speed motor. 22. The low pressure forced air heater of claim 21, wherein the status of said output of said control is affected by input received from a sensor element in communication with said control. 23. The low pressure forced air heater of claim 19, wherein said compressor is a vane air compressor.
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