US3898428A - Electric in line water heating apparatus - Google Patents

Electric in line water heating apparatus Download PDF

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Publication number
US3898428A
US3898428A US44913774A US3898428A US 3898428 A US3898428 A US 3898428A US 44913774 A US44913774 A US 44913774A US 3898428 A US3898428 A US 3898428A
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United States
Prior art keywords
water
apparatus
tubing
heater
corrugations
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Expired - Lifetime
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Inventor
William G Dye
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PTC AEROSPACE Inc A DE CORP
PTC AEROSPACE Inc BANTAM CT 06750 A CORP
Universal Oil Products Co
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Universal Oil Products Co
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Priority to US44913774 priority Critical patent/US3898428A/en
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Assigned to PTC AEROSPACE INC., BANTAM, CT. 06750 A CORP. reassignment PTC AEROSPACE INC., BANTAM, CT. 06750 A CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UOP INC., A DE CORP
Assigned to PTC AEROSPACE INC., A DE CORP reassignment PTC AEROSPACE INC., A DE CORP ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UOP INC.
Assigned to CHASE MANHATTAN BANK, N.A., THE reassignment CHASE MANHATTAN BANK, N.A., THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BE AVIONICS, INC., A CORP. OF DE
Anticipated expiration legal-status Critical
Assigned to BE AEROSPACE, INC. reassignment BE AEROSPACE, INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CHASE MANHATTAN BANK, N.A., THE
Assigned to CHASE MANHATTAN BANK, THE, A NATIONAL BANKING ASSOCIATION reassignment CHASE MANHATTAN BANK, THE, A NATIONAL BANKING ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BE AEROSPACE, INC. A CORP. DE
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00Apparatus for making beverages
    • A47J31/44Parts or details or accessories of beverage-making apparatus
    • A47J31/54Water boiling vessels in beverage making machines
    • A47J31/542Continuous-flow heaters
    • A47J31/545Control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H1/00Water heaters having heat generating means, e.g. boiler, flow- heater, water-storage heater
    • F24H1/10Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B3/00Ohmic-resistance heating
    • H05B3/40Heating elements having the shape of rods or tubes
    • H05B3/42Heating elements having the shape of rods or tubes non-flexible

Abstract

In line water heating apparatus comprising a cylindrical heating element positioned within a length of vertical helically corrugated tubing is compact in size, low in cost and very efficient in transferring heat to the water. The outer surface of the cylindrical heating element is uniformly spaced from the innermost portions of the corrugations along its entire length by a slight distance therefrom which is less than the depth of the corrugations. The internal helical tube corrugations cause a portion of the water entering at the bottom to tend to travel in a spiral, thus lengthening its contact path with the heater element before it is drawn off at the top of the apparatus. However, their main purpose is to induce turbulent flow conditions in the water and thus enhance the rate of heat transfer. Since the corrugated tube is spaced from the heater core, the water can also circulate and maintain its temperature when the valve is closed. A dual mode temperature control permits the small supply of water which is always present in the device to be maintained at a temperature somewhat less than the desired temperature so that water leaving the apparatus can very quickly be brought to its maximum and so that randomly drawn off single cups of water will be at a sufficiently hot temperature.

Description

United States Patent Dye ELECTRIC IN LINE WATER HEATING APPARATUS Inventor: William G. Dye, Jacksonville, Fla.

Universal Oil Products Company, Des Plaines, 111.

Mar. 7, 1974 Assignee:

Filed:

Appl. N0.:

References Cited UNITED STATES PATENTS FOREIGN PATENTS OR APPLICATIONS Levey l-lymes Spensley et al.

Ewing 219/306 Chandler 219/306 X 219/298 219/306 99/281 X Kautz 219/302 X United Kingdom 219/306 Austria 219/305 Aug. 5, 1975 [57] ABSTRACT In line water heating apparatus comprising a cylindrical heating element positioned within a length of vertical helically corrugated tubing is compact in size, low in cost and very efficient in transferring heat to the water. The outer surface of the cylindrical heating element is uniformly spaced from the innermost portions of the corrugations along its entire length by a slight distance therefrom which is less than the depth of the corrugations. The internal helical tube corrugations cause a portion of the water entering at the bottom to tend to travel in a spiral, thus lengthening its contact path with the heater element before it is drawn off at the top of the apparatus. However, their main purpose is to induce turbulent flow conditions in the water and thus enhance the rate of heat transfer. Since the cor rugated tube is spaced from the heater core, the water can also circulate and maintain its temperature when the valve is closed. A dual mode temperature control permits the small supply of water which is always present in the device to be maintained at a temperature somewhat less than the desired temperature so that water leaving the apparatus can very quickly be brought to its maximum and so that randomly drawn off single cups of water will be at a sufficiently hot temperature.

3 Claims, 3 Drawing Figures worm 30 uurn PATENTEB AUG 5l975 CONTROL UN/ 7' HEATER IPESS/JRE REL E VALUE cowmmr Flaw mm? INLET VALVE 1 ELECTRICVIN'L'INE WATER HEATING APPARATUS BACKGROUND OF THEJINVEVNTION i DESCRIPTION OF THE PREFERRED EMBODIMENT The in line heater apparatus shown generally at This invention relates to inline water heaters and 5 includes an upper end member 12 and a lower end particularly to heaters whichare adapted to heat small quantities of water in an instantaneous manner, such as for use in coffee brewing apparatus in aircraft- Various heaters for heatingfl'uids are known in the prior art, as exemplified by US. Pat. Nos. 2,245,085; 2,307,924; 2,577,269; 2,792,487; 2,802,089;- and 3,584,194. Each of these heaters can be characterized as having spirally shaped heater elements or spirally shaped internal walls which cause the fluid to flow in an extended path. Although British Pat/No. 398,589 shows an engine heater having a corrugated outer tube, most of the engine coolant would not flow through the tube since the tube is merely connectedto a coolant carrying tube by a tee fitting with any flow in the heater tube being caused by gravity due to variations in density. Any heating that takes place in such a heater would bevery slow and inefficient.

SUMMARY It is among the objects of the present invention to provide a compact, in-line water heater that is simple to construct and maintain and which is capable of continuously, and almost instantly delivering hot water at a temperature vlery closeto boiling.

The heater apparatus comprises a short length of braid reinforced, helically corrugated tubing having a water inlet and flow control valve at its lower end and a-water outlet at its upper end. A tubular sealed heating element is mounted in the lower end and extends upwardly for almost the entire length of the tube. The smooth outer surface of the heating element is spaced from the tubing corrugations by a distance slightly less than the depth of the corrugations. The spacing causes turbulence to be induced in the water when it is flowing so as to increase heat transfer. The spacing'also permits the water remaining within the apparatus when water is not being drawn off to circulate and thus be main tained at a relatively uniform'idle temperature. A temperature control positioned in the water within the tubing at a point above the heating element operates to maintain the water between an idle temperature of about 180F and a use temperature of about 195F.

To prevent the water pressure within the corrugated metal tubing from expanding the tubing, a flexible metal braid is placed around the tubing and is firmly affixed to metal ferrules attached to the ends of the corrugated tubing. A temperature control at the exit end of the heater senses the outlet water temperature and controls the operation of the heating element. An overheat thermostat mounted within the heater core serves to shut off the heating elements in case of an excess heat malfunction while a pressure release valve mounted near the outlet of the apparatus provides additional safety protection in the event the water pressure becomes excessive.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 3 is an enlarged view of a portion of FIG. 2.

member 14, each of which members havea bracket member 16 attached to it for mounting the apparatus 10 in a vertical position. A thin, corrugated metal tube 20 is affixed at its ends, preferably by welding, to the upperand lower endmembers 12, 14. Abraided wire metal sleeve 22 contacts the outermost surface portions of the corrugated tube 20 and is also welded to the endmembers 12,14. The braided sleeve not only prevents elongation of the corrugated tube 20 under pressure but also increases the maximum pressure which may be present inside the apparatus 10. The various aforementioned metal elements are preferably formed of stainless steel. Although the apparatus 10 could be used any place there is a need for a continuous flow of hot water, it is particularly useful in a coffee brewing apparatus for an aircraft. Since the invention relates to the internal design of the apparatus 10 rather than to the switches and other electrical circuit elements which control the flow of water through it, these circuit elements will be only generally described. Although 'not shown the entire unit 10 is preferably wrapped in a blanket of fiber glass insulation having an outer foil faced surface.

; In operation, water enters the inlet valve member 26 whichis threaded intothe end member 14. The entering water is heated by contact with the surface of sealed heating unit 30 which is mounted into the end member 14 by pipe threads 32. Heat is generated inside the heating unit 30 by three heater wires 34 connected in a three-phase delta arrangement. The heater unit 30 is protected against being damaged by overheating, such as might occur if the unit were operated without water being present, by means of an overheat thermostat (now shown). Wires 36 connected to the overheat thermostat lead out of the heater unit 30 to a control box 35. As the water which enters the unit 10 moves upwardly through the unit a portion of it tends to travel in a spiral through the corrugations 37 while the remainder of it moves in a generally axial direction through the space 38 between the heater unit 30 and the inside walls of the corrugations 20. The innermost portions of the corrugations 20 comprise ridges 20' which induce turbulence in the water flowing through the space 38, the space 38 having a width w less than the depth d of the corrugations, so as to enhance the rate of heat transfer. A water outlet fitting 40 is threaded into the upper end member 12. Water leaving the outlet fitting 40 preferably passes through an electrically actuated solenoid type valve (not shown) which controls the flow out of the unit. A pressure release valve 42 is mounted in the upper end member 12 as a safety feature in the event that excess pressure develops within the unit. A temperature control assembly 44 also is threaded into the end member 12. The temperature control unit 44 includes a temperature sensing probe 46 which senses the temperature of the water above the top of the heater unit 30. The probe 46 is preferably of stainless steel which surrounds a column of mercury. As the mercury rises with an increase in temperature it first closes the contacts of an idle mode switch which deactivates a heater control relay (not shown). If the apparatus is in a full heating mode, the

control box 35 where they are connected to the aforementioned relay (not shown) which is'in circuit with the heater wires 34. The circuit is arranged'so that during standby or idle operation, the water within the heater is controlled by control 44 and heater unit 30 so as to be maintained at an idle temperature of approximately 180. As soon as water flow is commenced, such as by actuation of the brew" button on a coffee brewer (not shown) to which the unit may be attached, the temperature control 44 actuates the heater unit 30 to cause the water to be additionally heated so that water leaving the outlet 40 will reach and will maintain a temperature of about 195F, a temperature at which it is held until delivery of hot water is no longer desired. By maintaining the unit at an idle temperature it is possible to add sufficient heat even to the first cup of water drawn offso that the unit may be used to provide either a single cup of water such as for making tea or may be operated continuously such as to fill a coffee pot. The water inlet valve 26 is preferably of the type which compensates for changes in inlet pressure to assure a constant flow of water matched to the capability of the heating elements. The constant water flow rate is also important when the unit is controlled by a time delay relay which permits water to flow for a fixed period of time to brew a pot of coffee when a brew cycle is started.

In a test unit incorporating the invention and utilizing a 3,000 watt heater (Watlow type T8Ax6A), a Micropump incorporated flow control valve type 89ZSS, and a Philadelphia Scientific Glass Corporation Model 5-09319 temperature control, a flow of about oz. per minute was achieved at a temperature of 195F. The efficiency of the design was compared to a unit which was identical except that the corrugations 20 touched the outer surface of the heater unit 30 so as to force all of the water to follow a spiral path. The design was also compared to a unit wherein the corrugated tube 20 was replaced by a smooth wall tube having the same internal diameter. in each instance, the inlet water temperature, the inlet pressure, the length of the brew cycle and the quantity of water in the pot were held constant. The design of the present invention wherein a space 38 is provided between the heater 30 and corrugated tube 20 provided a 3 to 5F higher pot temperature in every testrun.

I claim as my invention: I I

1. In line heater apparatus for providing an instantaneous supply of hot water comprises a length of helically corrugated tubing positioned in surrounding, spaced relation to an axially positioned cylindrical heater element mounted on one of first and second end members positioned at each end of said tubing and integrally attached thereto, means on said first endmember for attaching the apparatus to a water supply line, means on said second end member for attaching the apparatus to a valve controlled dispensing line, temperature control means mounted in said second end member for controlling the operation of said heater element, said cylindrical element extending for substantially the entire length of said corrugated tubing and the outer surface of the cylindrical heater element being uniformly spaced from the innermost portions of the corrugations along its entire length by a slight distance therefrom which is less than the depth of the corrugations, the spacing being sufficient that water flowing from one end of said tubing to the other will flow in a generally helical path through the corrugations and in a generally axial direction in said space and in turbulent contact with said cylindrical heating element.

2. The heater apparatus of claim 1 wherein a braided metal sleeve surrounds said corrugated tubing and is welded to said first and second end members, said braided sleeve serving to prevent elongation of the tubing due to increases in the pressure of the fluid within the system. V i

3. The heater apparatus of claim 1 wherein the tubing, end members and braided sleeve are each .formed of stainless steel.

Claims (3)

1. In line heater apparatus for providing an instantaneous supply of hot water comprises a length of helically corrugated tubing positioned in surrounding, spaced relation to an axially positioned cylindrical heater element mounted on one of first and second end members positioned at each end of sAid tubing and integrally attached thereto, means on said first end member for attaching the apparatus to a water supply line, means on said second end member for attaching the apparatus to a valve controlled dispensing line, temperature control means mounted in said second end member for controlling the operation of said heater element, said cylindrical element extending for substantially the entire length of said corrugated tubing and the outer surface of the cylindrical heater element being uniformly spaced from the innermost portions of the corrugations along its entire length by a slight distance therefrom which is less than the depth of the corrugations, the spacing being sufficient that water flowing from one end of said tubing to the other will flow in a generally helical path through the corrugations and in a generally axial direction in said space and in turbulent contact with said cylindrical heating element.
2. The heater apparatus of claim 1 wherein a braided metal sleeve surrounds said corrugated tubing and is welded to said first and second end members, said braided sleeve serving to prevent elongation of the tubing due to increases in the pressure of the fluid within the system.
3. The heater apparatus of claim 1 wherein the tubing, end members and braided sleeve are each formed of stainless steel.
US44913774 1974-03-07 1974-03-07 Electric in line water heating apparatus Expired - Lifetime US3898428A (en)

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Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4185187A (en) * 1977-08-17 1980-01-22 Rogers David H Electric water heating apparatus
US4199675A (en) * 1977-06-23 1980-04-22 Nordson Corporation Electric fluid heater
US4261333A (en) * 1979-12-03 1981-04-14 Stephen Guarnaschelli Solar heat exchanger
EP0062691A1 (en) * 1981-04-15 1982-10-20 Elpag Ag Chur Heat exchanger
US4364754A (en) * 1981-04-13 1982-12-21 Century 21 Pollution Control, Inc. Apparatus for separating foreign matter from a gas with a heat exchanger
WO1983004465A1 (en) * 1982-06-07 1983-12-22 Graco Inc. Electric fluid flow heater having precise temperature control
US4468406A (en) * 1981-05-20 1984-08-28 Staar S.A. Method for automatically brewing coffee and machine therefor
US4661323A (en) * 1985-04-08 1987-04-28 Olesen Ole L Radiating sleeve for catalytic reaction apparatus
FR2600855A1 (en) * 1986-06-26 1987-12-31 Electricite De France Electric heating device comprising a metal sheath
DE3807144A1 (en) * 1987-03-12 1988-09-22 Vaillant Joh Gmbh & Co Electrically operated instantaneous water heater
US5020127A (en) * 1987-10-23 1991-05-28 Energy Saving Products Of Tennesse, Inc. Tankless electric water heater
US5129034A (en) * 1989-12-08 1992-07-07 Leonard Sydenstricker On-demand hot water system
WO1998016783A1 (en) * 1996-10-11 1998-04-23 Lufran Incorporated Purged grounded immersion heater
US5875283A (en) * 1996-10-11 1999-02-23 Lufran Incorporated Purged grounded immersion heater
WO2001054551A1 (en) * 2000-01-24 2001-08-02 Societe Des Produits Nestle S.A. A liquid heating module, a system comprising said module and a process for heating liquid
US6424801B1 (en) * 2001-05-02 2002-07-23 Dynamo Aviation, Inc. Upright cylindrical water heater with top and bottom can covers
GB2395899A (en) * 2002-12-02 2004-06-09 Michael Weir Instant boiling water tap
US20040221585A1 (en) * 2003-02-12 2004-11-11 Abras Alexei D. Heat exchanger for high purity and corrosive fluids
EP1669688A1 (en) * 2003-08-05 2006-06-14 Matsushita Electric Industrial Co., Ltd. Fluid heating device and cleaning device using the same
US20070108304A1 (en) * 2005-11-02 2007-05-17 Eiji Seki Hot water supply device
US20070274697A1 (en) * 2004-02-05 2007-11-29 Gusmer Machinery Group Hybrid Heater
US20080066623A1 (en) * 2004-07-07 2008-03-20 Koninklijke Philips Electronics N. V. Coffee Maker Comprising Means For Creating Turbulence In A Coffee Flow
US20080317450A1 (en) * 2007-06-21 2008-12-25 Nitta Moore Company Piping structure of heating/heat-retaining tube
US20090034949A1 (en) * 2007-07-30 2009-02-05 Nitta Moore Company Device having heating/heat-retaining tube
US20090159248A1 (en) * 2007-12-21 2009-06-25 Mimitz Sr Timothy E Heat exchanger, heat exchanger tube and methods of making and using same
US7616873B1 (en) 1990-05-10 2009-11-10 Seitz David E Thermo-plastic heat exchanger
WO2010055472A2 (en) * 2008-11-14 2010-05-20 Koninklijke Philips Electronics N.V. Insert for a flow through heater
US20100199853A1 (en) * 2007-09-07 2010-08-12 Compagnie Mediterraneenne Des Cafes Boiler for a machine for making hot beverages
EP2218374A2 (en) 2007-10-04 2010-08-18 Nestec S.A. Integrated heater for a beverage preparation device
US20100303983A1 (en) * 2009-05-29 2010-12-02 Steve Martin Rodriguez Beverage brewing system and method
DE102009024059A1 (en) * 2009-06-05 2010-12-09 Eichenauer Heizelemente Gmbh & Co. Kg Flow heater, has embossments that are formed together with surface of casing tube of inner tubular heating element, where embossments are formed as semi-circular embossments along cross section planes of tubular heating element
US20110017449A1 (en) * 2009-07-27 2011-01-27 Berruti Alex J System and method for enhanced oil recovery with a once-through steam generator
US20110036544A1 (en) * 2003-12-10 2011-02-17 Panasonic Corporation Heat exchanger
US20130118359A1 (en) * 2010-07-16 2013-05-16 Nestec S.A. Advanced heating device
US20140093225A1 (en) * 2011-02-21 2014-04-03 Strix Limited Electrical water heating appliances
US20140355966A1 (en) * 2011-09-06 2014-12-04 Valeo Systemes Thermiques Electrical Heating Device For A Motor Vehicle And Vehicle And Associated Air-Conditioning And/Or Heating Unit
WO2016004298A1 (en) * 2014-07-03 2016-01-07 B/E Aerospace, Inc. Multi-phase circuit flow-through heater for aerospace beverage maker
WO2016162895A1 (en) * 2015-04-10 2016-10-13 Iacobucci Hf Aerospace S.P.A. Heating device
US9975402B2 (en) 2011-09-06 2018-05-22 Valeo Systemes Thermiques Electrical heating device for a motor vehicle and vehicle and associated air-conditioning and/or heating unit
CN108332415A (en) * 2017-01-07 2018-07-27 B/E航空公司 The polyphase circuit flow-through heater of device is manufactured for aerospace drink

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2228004A (en) * 1939-09-27 1941-01-07 S Q Ewing Domestic electric water heater
US2686863A (en) * 1951-08-07 1954-08-17 Edward F Chandler Fluid heating and circulating device
US2833909A (en) * 1956-05-29 1958-05-06 Gustave S Levey Hose-type paint heater
US3286078A (en) * 1964-04-06 1966-11-15 Hynes Electric Heating Company Flexible internal heater
US3523178A (en) * 1968-05-10 1970-08-04 Hill Shaw Co Method and apparatus for heating liquids
US3584194A (en) * 1969-05-23 1971-06-08 Aro Corp Fluid heating techniques

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2228004A (en) * 1939-09-27 1941-01-07 S Q Ewing Domestic electric water heater
US2686863A (en) * 1951-08-07 1954-08-17 Edward F Chandler Fluid heating and circulating device
US2833909A (en) * 1956-05-29 1958-05-06 Gustave S Levey Hose-type paint heater
US3286078A (en) * 1964-04-06 1966-11-15 Hynes Electric Heating Company Flexible internal heater
US3523178A (en) * 1968-05-10 1970-08-04 Hill Shaw Co Method and apparatus for heating liquids
US3584194A (en) * 1969-05-23 1971-06-08 Aro Corp Fluid heating techniques

Cited By (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199675A (en) * 1977-06-23 1980-04-22 Nordson Corporation Electric fluid heater
US4185187A (en) * 1977-08-17 1980-01-22 Rogers David H Electric water heating apparatus
US4261333A (en) * 1979-12-03 1981-04-14 Stephen Guarnaschelli Solar heat exchanger
US4364754A (en) * 1981-04-13 1982-12-21 Century 21 Pollution Control, Inc. Apparatus for separating foreign matter from a gas with a heat exchanger
EP0062691A1 (en) * 1981-04-15 1982-10-20 Elpag Ag Chur Heat exchanger
US4468406A (en) * 1981-05-20 1984-08-28 Staar S.A. Method for automatically brewing coffee and machine therefor
WO1983004465A1 (en) * 1982-06-07 1983-12-22 Graco Inc. Electric fluid flow heater having precise temperature control
US4501952A (en) * 1982-06-07 1985-02-26 Graco Inc. Electric fluid heater temperature control system providing precise control under varying conditions
US4661323A (en) * 1985-04-08 1987-04-28 Olesen Ole L Radiating sleeve for catalytic reaction apparatus
FR2600855A1 (en) * 1986-06-26 1987-12-31 Electricite De France Electric heating device comprising a metal sheath
EP0251891A1 (en) * 1986-06-26 1988-01-07 ELECTRICITE DE FRANCE Service National Electrical heating device with a metal surround
DE3807144A1 (en) * 1987-03-12 1988-09-22 Vaillant Joh Gmbh & Co Electrically operated instantaneous water heater
US5020127A (en) * 1987-10-23 1991-05-28 Energy Saving Products Of Tennesse, Inc. Tankless electric water heater
US5129034A (en) * 1989-12-08 1992-07-07 Leonard Sydenstricker On-demand hot water system
US7616873B1 (en) 1990-05-10 2009-11-10 Seitz David E Thermo-plastic heat exchanger
US5875283A (en) * 1996-10-11 1999-02-23 Lufran Incorporated Purged grounded immersion heater
WO1998016783A1 (en) * 1996-10-11 1998-04-23 Lufran Incorporated Purged grounded immersion heater
CZ300739B6 (en) * 2000-01-24 2009-07-29 Societe Des Produits Nestle S. A. Module for heating a liquid, process for heating a liquid in a system comprising such module, machine for the preparation of coffee and vending machine comprising the module
US6459854B1 (en) 2000-01-24 2002-10-01 Nestec S.A. Process and module for heating liquid
WO2001054551A1 (en) * 2000-01-24 2001-08-02 Societe Des Produits Nestle S.A. A liquid heating module, a system comprising said module and a process for heating liquid
US6424801B1 (en) * 2001-05-02 2002-07-23 Dynamo Aviation, Inc. Upright cylindrical water heater with top and bottom can covers
GB2395899B (en) * 2002-12-02 2005-02-09 Michael Weir Instant boiling water tap
GB2395899A (en) * 2002-12-02 2004-06-09 Michael Weir Instant boiling water tap
US20040221585A1 (en) * 2003-02-12 2004-11-11 Abras Alexei D. Heat exchanger for high purity and corrosive fluids
US7526922B2 (en) * 2003-02-12 2009-05-05 Applied Integrated Systems, Inc. Heat exchanger for high purity and corrosive fluids
EP1669688A4 (en) * 2003-08-05 2014-04-30 Panasonic Corp Fluid heating device and cleaning device using the same
EP1669688A1 (en) * 2003-08-05 2006-06-14 Matsushita Electric Industrial Co., Ltd. Fluid heating device and cleaning device using the same
US8180207B2 (en) * 2003-12-10 2012-05-15 Panasonic Corporation Heat exchanger
US20110036544A1 (en) * 2003-12-10 2011-02-17 Panasonic Corporation Heat exchanger
US8249437B2 (en) 2004-02-05 2012-08-21 Graco Minnesota, Inc. Hybrid heater
US20110038620A1 (en) * 2004-02-05 2011-02-17 Graco Minnesota, Inc. Hybrid heater
US7822326B2 (en) * 2004-02-05 2010-10-26 Graco Minnesota, Inc. Hybrid heater
US20070274697A1 (en) * 2004-02-05 2007-11-29 Gusmer Machinery Group Hybrid Heater
US20080066623A1 (en) * 2004-07-07 2008-03-20 Koninklijke Philips Electronics N. V. Coffee Maker Comprising Means For Creating Turbulence In A Coffee Flow
US20070108304A1 (en) * 2005-11-02 2007-05-17 Eiji Seki Hot water supply device
US20080317450A1 (en) * 2007-06-21 2008-12-25 Nitta Moore Company Piping structure of heating/heat-retaining tube
US20090034949A1 (en) * 2007-07-30 2009-02-05 Nitta Moore Company Device having heating/heat-retaining tube
US8238733B2 (en) 2007-07-30 2012-08-07 Nitta Corporation Device having heating/heat-retaining tube
US8607694B2 (en) * 2007-09-07 2013-12-17 Compagnie Mediterraneenne Des Cafes (Sa) Boiler for a machine for making hot beverages
US20100199853A1 (en) * 2007-09-07 2010-08-12 Compagnie Mediterraneenne Des Cafes Boiler for a machine for making hot beverages
EP2218374A2 (en) 2007-10-04 2010-08-18 Nestec S.A. Integrated heater for a beverage preparation device
EP2218374B1 (en) 2007-10-04 2017-12-27 Nestec S.A. Integrated heater for a beverage preparation device
US20090159248A1 (en) * 2007-12-21 2009-06-25 Mimitz Sr Timothy E Heat exchanger, heat exchanger tube and methods of making and using same
WO2010055472A3 (en) * 2008-11-14 2013-01-10 Koninklijke Philips Electronics N.V. Insert for a flow through heater
CN102317703A (en) * 2008-11-14 2012-01-11 皇家飞利浦电子股份有限公司 Insert for a flow through heater
WO2010055472A2 (en) * 2008-11-14 2010-05-20 Koninklijke Philips Electronics N.V. Insert for a flow through heater
US9241594B2 (en) 2009-05-29 2016-01-26 Enflite, Inc. Beverage brewing system and method
US20100303983A1 (en) * 2009-05-29 2010-12-02 Steve Martin Rodriguez Beverage brewing system and method
DE102009024059A1 (en) * 2009-06-05 2010-12-09 Eichenauer Heizelemente Gmbh & Co. Kg Flow heater, has embossments that are formed together with surface of casing tube of inner tubular heating element, where embossments are formed as semi-circular embossments along cross section planes of tubular heating element
US8631871B2 (en) 2009-07-27 2014-01-21 Innovative Steam Technologies Inc. System and method for enhanced oil recovery with a once-through steam generator
US20110017449A1 (en) * 2009-07-27 2011-01-27 Berruti Alex J System and method for enhanced oil recovery with a once-through steam generator
US20130118359A1 (en) * 2010-07-16 2013-05-16 Nestec S.A. Advanced heating device
US10368689B2 (en) * 2010-07-16 2019-08-06 Societe Des Produits Nestle S.A. Advanced heating device
US20140093225A1 (en) * 2011-02-21 2014-04-03 Strix Limited Electrical water heating appliances
US20140355966A1 (en) * 2011-09-06 2014-12-04 Valeo Systemes Thermiques Electrical Heating Device For A Motor Vehicle And Vehicle And Associated Air-Conditioning And/Or Heating Unit
US9975402B2 (en) 2011-09-06 2018-05-22 Valeo Systemes Thermiques Electrical heating device for a motor vehicle and vehicle and associated air-conditioning and/or heating unit
US10524611B2 (en) 2014-07-03 2020-01-07 B/E Aerospace, Inc. Multi-phase circuit flow-through heater for aerospace beverage maker
CN106659327A (en) * 2014-07-03 2017-05-10 Be航天公司 Multi-phase circuit flow-through heater for aerospace beverage maker
WO2016004298A1 (en) * 2014-07-03 2016-01-07 B/E Aerospace, Inc. Multi-phase circuit flow-through heater for aerospace beverage maker
WO2016162895A1 (en) * 2015-04-10 2016-10-13 Iacobucci Hf Aerospace S.P.A. Heating device
EP3366173A3 (en) * 2017-01-07 2018-11-14 B/E Aerospace, Inc. Multi-phase circuit flow-through heater for aerospace beverage maker
CN108332415A (en) * 2017-01-07 2018-07-27 B/E航空公司 The polyphase circuit flow-through heater of device is manufactured for aerospace drink

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