Heat exchange configuration for use in a mobile system cleaning apparatus
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47L-011/34
출원번호
US-0783691
(2010-05-20)
등록번호
US-8458852
(2013-06-11)
발명자
/ 주소
Williams, Ron
출원인 / 주소
Kärcher North America, Inc.
대리인 / 주소
Sheridan Ross P.C.
인용정보
피인용 횟수 :
0인용 특허 :
39
초록▼
The present invention relates to a system of creating and applying a heated cleaning fluid to a surface. The system includes a housing with a first, a second and a third exhaust gas opening. A first, second, and third heat exchanger are enclosed within the housing. The first and second exchangers ar
The present invention relates to a system of creating and applying a heated cleaning fluid to a surface. The system includes a housing with a first, a second and a third exhaust gas opening. A first, second, and third heat exchanger are enclosed within the housing. The first and second exchangers are serially arranged, while the third is at an angle relative to the first and second and directly adjacent to the first opening. Super heated exhaust gas flows through first opening and third exchanger. Heated gas flows through the second opening and passes below the third exchanger. Super heated exhaust gas exiting the third exchanger mixes with the heated gas in a mixing chamber of the housing, which is then supplied to the first and second exchangers. Fluid passes through the three exchangers and exits the third exchanger heated. That heated fluid passes to a cleaning wand for application.
대표청구항▼
1. A heat exchanger arrangement for use on a mobile cleaning device, comprising: a housing including a first and second exhaust gas opening, and an exhaust gas exit;a first and second heat exchanger arranged in serial relationship and enclosed within the housing;a third heat exchanger enclosed withi
1. A heat exchanger arrangement for use on a mobile cleaning device, comprising: a housing including a first and second exhaust gas opening, and an exhaust gas exit;a first and second heat exchanger arranged in serial relationship and enclosed within the housing;a third heat exchanger enclosed within the housing and positioned at an angle relative to the first and second heat exchangers and adjacent the first exhaust gas opening;a first source of super heated exhaust gas;a second source of heated gas;wherein the super heated exhaust gas is supplied to the first exhaust gas opening and flows substantially through the third heat exchanger; and wherein the heated gas is supplied to the second exhaust gas opening and mixes within a mixing area of the housing with exhaust gas exiting the third heat exchanger, the mixed gases entering the second and first heat exchangers and exiting the exhaust gas exit. 2. The heat exchanger arrangement of claim 1, wherein said super heated exhaust gas supplied to the first exhaust gas opening is at a higher temperature than the heated gas supplied to the second exhaust gas opening. 3. The heat exchanger arrangement of claim 1, wherein the temperature of the super heated exhaust gas flowing substantially through the third heat exchanger decreases as it exits the third heat exchanger. 4. The heat exchanger arrangement of claim 1, wherein the super heated exhaust gas is supplied by a heat generating unit. 5. The heat exchanger arrangement of claim 4, wherein the heat generating unit is an internal combustion engine. 6. The heat exchanger arrangement of claim 1, wherein the heated gas supplied to the second opening is supplied by a vacuum unit in operation. 7. A system of applying a heated cleaning fluid to a surface, comprising: a housing including a first, second and third opening;a first and second heat exchanger arranged in serial relationship and enclosed within the housing;a third heat exchanger enclosed within the housing and positioned at an angle relative to the first and second heat exchangers and adjacent the first opening;a first source of super heated exhaust gas;a second source of heated gas;the super heated exhaust gas is supplied to the first opening and allowing that gas to flow substantially through the third heat exchanger;the heated gas is supplied to the second opening and having that gas pass below the third heat exchanger, mixing in a mixing area of the housing with exhaust gas exiting the third heat exchanger before supplying that mixed gas to the second and first heat exchangers;a fluid to be heated is passed through the first, second and third heat exchangers before exiting the third heat exchanger in a heated condition; andthe heated fluid is passed to a wand assembly. 8. The system of claim 7, wherein the super heated exhaust gas is at a higher temperature than said heated gas supplied to the second opening. 9. The system of claim 7, wherein the temperature of the super heated exhaust gas flowing substantially through the third heat exchanger remains substantially the same as it exits said third heat exchanger. 10. The system of claim 7, wherein the super heated exhaust gas is supplied by a heat generating unit. 11. The system of claim 10, wherein the heat generating unit is an internal combustion engine. 12. The system of claim 7, wherein the fluid first flows from a water inlet into a fluid box for preheating with the fluid that has been passed through the first heat exchanger and diverted to the fluid box. 13. The system of claim 7, further comprising a pump that facilitates the flow of the fluid. 14. The system of claim 7, further a comprising a vacuum unit which recovers and directs fluid that has passed through the cleaning wand to a waste fluid recovery tank; and supplies heated gas that results from the fluid recovery to the second exhaust opening. 15. The system of claim 7, further comprising a chemical injection mechanism to inject a volume of chemical solution into the fluid. 16. The system of claim 7, wherein the wand assembly further comprises: a check valve to regulate the flow of fluid when activated; anda solution outlet for fluid to flow through and onto a surface; anda cleaning solution screen to measure at least one of the temperature and composition of said fluid flowing through said solution outlet. 17. The system of claim 7, further comprising a temperature control valve to determine whether the fluid is heated to a temperature exceeding a predetermined temperature. 18. The system of claim 17, further comprising a temperature relief valve that opens and diverts said fluid into a waste recovery tank when the fluid exceeds a predetermined temperature. 19. The system of claim 17, wherein a temperature balance orifice is placed substantially near the wand assembly to maintain at least a minimum amount of fluid circulation in the system. 20. The system of claim 7, wherein the temperature of the fluid passing to the wand assembly fluctuates approximately 15° to 20° Fahrenheit over an approximately 20 second period. 21. The system of claim 7, wherein the temperature of the fluid passing to the wand assembly fluctuates approximately 5° to 10° Fahrenheit over an approximately 10 second period. 22. The system of claim 7, further comprising a pressure gauge to monitor the pressure of the fluid; a pressure regulator to adjust the pressure of the fluid; anda pulse hose connected to the pressure regulator.
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