[특허]Dispensing system and chemical flow heating means for use therein

Intellipack, Inc.

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Dispensing system and chemical flow heating means for use therein

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B67D-005/60
미국특허분류(USC)	222/145.5; 222/054; 222/146.2; 222/190
출원번호	US-0835588 (2004-04-30)
등록번호	US-7490737 (2009-02-17)
발명자 / 주소	Cocciadiferro,Edward Bertram,George Hayduk,Matthew
출원인 / 주소	Intellipack, Inc.
대리인 / 주소	Smith, Gambrell & Russell, LLP
인용정보	피인용 횟수 : 7 인용 특허 : 41

초록
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A foam chemical dispenser apparatus having a chemical supply device and a dispenser device with housing and foam chemical output. A chemical passageway is provided from the source to the output. In a preferred embodiment, the passageway is at least partially defined by a hose and a chemical conduit formed in the dispenser housing. A heating system is included having a first heater element extending within the hose from a first end positioned closer to the chemical supply device to a second feedthrough supported end positioned closer to the dispenser device, and a second heating element is provided in the dispenser device. A temperature sensor system is included with a first temperature sensor positioned for sensing temperature of chemical in the hose and a second temperature sensor positioned for sensing chemical temperature in the dispenser device. A preferred embodiment has a control assembly communicating with the temperature sensor system and the heating system to maintain chemical traveling in the hose to the chemical outlet of the dispenser device at a chemical temperature above a predetermined minimum temperature (e.g., above 110 degrees F. despite the dispenser apparatus being in a cold environment). An embodiment of the invention also includes a slide facilitator at a free end of a coil heater element received within the hose.

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What is claimed is: 1. A foam dispensing apparatus, comprising: a foam precursor fluid chemical pump; a dispenser having a fluid chemical outlet; a hose through which the fluid chemical flows in flowing between said pump and chemical outlet, a heating system having an elongated heating device received within said hose and a feed through unit to which a first end of said heating device extends and into which electrical terminals in electrical communication with said heating device extend into, and said heating device having an opposite, second end positioned closer to said chemical pump than said first end, and a supplemental heater positioned downstream of said first end and a control unit which monitors relative temperature of said supplemental heater and said elongated heating device and makes adjustment in at least one of said supplemental heater and said elongated heating device. 2. The apparatus of claim 1 wherein said heating system includes a temperature sensor that is received within said hose. 3. The apparatus of claim 2 wherein said temperature sensor has a main body extending in an upstream to downstream direction relative to fluid chemical flow in said hose and a temperature probe that is at an upstream end of said temperature sensor, and said temperature sensor has chemical leads which extend only in an upstream to downstream direction in going from a first connection end at said main body to a second connection end at said feedthrough unit. 4. The apparatus of claim 2 wherein said heating device includes a coiled resistance wire which extends sufficiently upstream from said feedthrough unit to achieve a desired heat temperature in the chemical passing along said heating device and said temperature sensor is received within a coiled portion of said heating device. 5. The apparatus of claim 2 wherein said temperature sensor comprises a thermistor. 6. The apparatus of claim 2 wherein said heating system further comprises a closed loop control and power source combination for monitoring and maintaining a desired chemical temperature in said hose based on readings by said temperature sensor. 7. The apparatus of claim 2 wherein the ratio of length of said hose to said temperature sensor from an upstream end of each to said feedthrough unit is 10 to 1 or more. 8. The apparatus of claim 7 wherein the ratio is 20:2 feet. 9. The apparatus of claim 1 wherein said heating device includes a manifold block which is connected with said feedthrough unit and which includes a chemical outlet flow port for feeding heated chemical to said dispenser. 10. The apparatus of claim 1 wherein said heating device includes a resistance element received within said hose and the first end of said heating device is encompassed in a chemical contact insulation member at said feedthrough unit, and said feedthrough unit receiving electrical terminals and said heating system further comprising a second, non-chemical contact insulating member that receives said electrical terminals, and said heating system further comprising power source and return leads which extend into said second insulating member and into electrical communication with said terminals received within said second insulating member. 11. The apparatus of claim 10 wherein said insulating members are pottings which fully encompass the terminals and said terminals extend to opposite sides of said feedthrough unit. 12. The apparatus of claim 10 wherein said resistance element includes a coil section that extends into contact with one of said terminals. 13. The apparatus of claim 12 wherein said resistance element includes a return electrical line that extends into electrical communication with one of said terminals supported by said feedthrough unit. 14. The apparatus of claim 10 further comprising a temperature sensor received in chemical contact within said hose and having electrical lines that extend into said first insulating member and said heating device comprising third and fourth terminal leads to which respective electrical lines of said temperature sensor extend. 15. The apparatus of claim 1 wherein said heating device comprises an elongated coil resistance element that has a return leg electrical line and said heating system further comprises a temperature sensor received within said elongated coil and said return leg having a first section which extends from within to an exterior of said elongated coil, an intermediate section that extends along an exterior portion of said elongated coil and past an interior positioned sensor probe of said temperature sensor, and then has a return section which extends from an exterior of the elongated coil back into said elongated coil. 16. The apparatus of claim 15 wherein said heating system includes insulating wrap limited to areas of where said return line exits and reenters the confines of said elongated coil. 17. The apparatus of claim 1 wherein said chemical hose and elongated heating device are flexible and arranged in a loop arrangement that expands and contracts in use but retains a loop arrangement at all times during use. 18. The apparatus of claim 1 wherein said heating device includes a manifold block which is connected with said feedthrough unit and which includes a chemical outlet flow port for feeding heated chemical to said dispenser, wherein said manifold block includes mounting means for mounting said manifold block to a dispenser housing of said dispenser. 19. The apparatus of claim 1 wherein said heating device includes an elongated resistance heating coil and the free end of said heating coil supports an insert member having a bulbous configuration for facilitating feeding of said coil within said hose. 20. The apparatus of claim 18 wherein said bulbous insert has an insertion end that extends into a reception area within a coiled section of said heating coil and said bulbous insert having a slide facilitator section having a diameter greater than that of the coiled section of the heating coil. 21. The apparatus of claim 19 wherein said bulbous insert has a mushroom shape with a smoothly curving front exterior surface. 22. The apparatus of claim 1 wherein said heating system includes a resistance element that extends from said feedthrough unit towards the pump end of the hose but is of a length which makes the heating elements free end sufficiently removed from a hose pump connection end of said hose as to be free of any insulation. 23. The apparatus of claim 1 wherein said feedthrough unit is formed of an interior insulating material and a section formed of a different material in a supporting relationship about said insulating layer. 24. The apparatus of claim 1 wherein said hose is rated to handle chemical flow pressures which include pressures of 200 to 600 psi. 25. The apparatus of claim 1 wherein said heating system includes a temperature sensor that is received within said hose and said heating device comprises a resistance coil with a return leg that is the only electrical lead component of the heating system external to said coil within said hose. 26. A foam chemical dispenser apparatus, comprising: a chemical supply device; a dispenser device, having a dispenser housing and an outlet from which foam chemical is output; a chemical passageway through which chemical passes in going from said supply device to said foam chemical output, said chemical passageway being defined by a hose and chemical conduiting formed in said dispenser housing; a heating system comprising a first heater element that extends within said hose from a first end positioned closer to said chemical supply device to a second end supported closer to said dispenser device, and a second heating element that is provided in said dispenser device; a temperature sensor system including a first temperature sensor positioned for sensing temperature of chemical traveling in said hose and a second temperature sensor positioned for sensing the temperature of chemical traveling in said dispenser device; a control assembly in communication with said temperature sensor system and said heating system to maintain chemical traveling from a point on the heater element in said hose to the chemical outlet of said dispenser device at a chemical temperature above a predetermined minimum temperature during said traveling of the chemical. 27. The apparatus of claim 26 wherein said control assembly includes means for striving to maintain the temperature of chemical in said dispenser at the same level as that in said hose. 28. The apparatus of claim 27 wherein said control system includes means for adjusting a chemical heat temperature in said hose and means for adjusting said second heating element to be in better temperature level accordance with the adjusted temperature chemical in said hose. 29. The apparatus of claim 26 wherein said dispenser comprises a chemical intake manifold having a chemical conduit through which the chemical passes in going from said hose to the dispenser housing, and said heating system comprising a third heater element and said temperature sensing system comprises a third temperature sensor positioned for sensing the temperature of chemical traveling in said intake manifold, and said control assembly being in communication with said third temperature sensor and said third heater element. 30. The apparatus of claim 29 wherein said third heater unit is adjusted by said control assembly to conform in temperature with an adjusted hose temperature setting. 31. The apparatus of claim 29 further comprising a chemical filter and wherein said intake manifold further includes a filter reception recess which receives said filter. 32. The apparatus of claim 29 further comprising a pressure transducer and wherein said intake manifold further includes a pressure transducer recess which receives said pressure transducer. 33. The apparatus of claim 26 wherein said first heater element and temperature sensor is in direct contact with the chemical and said second and third heater elements and temperature sensors are not in direct contact with the chemical. 34. The apparatus of claim 26 wherein said dispenser housing includes an elongated hole running adjacent an elongated section of said chemical passageway defined by said dispenser housing and said second heater element is an elongated cartridge heater insertable within said elongated hole to heat chemical traveling in said elongated section of said chemical passageway. 35. The apparatus of claim 34 wherein said cartridge heater is of a negative temperature coefficient heater type. 36. The apparatus of claim 26 wherein said dispenser housing includes a main manifold which is an extruded element with two elongated through holes, with a first receiving said second heater and the second defining a section of said chemical passageway. 37. The apparatus of claim 26 further comprising a solvent supply line solvent passageway in said dispenser housing heated by said second heater element. 38. The apparatus of claim 26 wherein said heater is of a negative temperature coefficient heater type a power level of said second heater includes 300 watts. 39. The apparatus of claim 26 wherein said heating system, temperature sensor system and control assembly cooperate to retain a chemical temperature within said hose and said dispenser housing from 125 to 140 degrees F. 40. A heated hose assembly for use in a chemical supply, comprising: an elongated flexible hose having an outer conduit and an interior chemical flow passageway; an elongated heater element dimensioned for insertion into said outer conduit; a bulbous insertion facilitator provided at a free end region of said heating element, and, wherein said heater element comprises a resistance coil and said insertion facilitator has a bulbous configuration with an insertion section secured to a free end of the coil and an enlarged head that extends from said insertion section, and said enlarged head having an outer periphery greater than that of the coil to facilitate a feeding in of said coil and secured insertion facilitator within the outer conduit and with said outer periphery being less than that of an interior surface of said outer conduit to provide for chemical flow therepast. 41. A foam dispenser system comprising first and second chemical passageway hoses; a pump assembly for delivering foam precursor chemicals "A" and "B", respectively, to said passageway hoses; a chemical mixing module with mixed chemical output; a dispenser housing supporting said mixing module, said dispenser housing having a main manifold which includes a pair of elongated chemical passageways for said chemicals "A" and "B"; a heater device which is received in a heater device recess provided in said main manifold adjacent said pair of elongated chemical passageways to heat chemical passing in said pair of passageways; a temperature sensor system with temperature sensor for monitoring chemical heat levels in said dispenser housing; and a control system for adjusting chemical temperatures traveling in said pair of elongated chemical passageways. 42. The system of claim 41 further comprising a solvent supply source and wherein said main manifold includes a solvent flow passageway which extends along with said pair of chemical passageways and said heater element is an elongated heater cartridge extending adjacent said solvent passageway and a pair of chemical flow passageways so as to heat solvent and chemical passing therein. 43. The system of claim 41 further comprising an intake manifold for receiving chemical from said hoses and feeding chemical through a pair of intake manifold chemical passageways to said main manifold, and an intake manifold heater element which is received by said intake manifold to heat chemical passing through the pair of intake manifold passageways. 44. The system of claim 43 further comprising an intake manifold chemical temperature sensor and said control system having means for monitoring and adjusting said intake manifolds heater elements and the chemical in said pair of intake manifold passageways.

이 특허에 인용된 특허 (41)

이 특허를 인용한 특허 피인용횟수: 7

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Dispensing system and chemical flow heating means for use therein

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Dispensing system and chemical flow heating means for use therein

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