US20180116259A1 - Fluid heating appliance - Google Patents
Fluid heating appliance Download PDFInfo
- Publication number
- US20180116259A1 US20180116259A1 US15/845,626 US201715845626A US2018116259A1 US 20180116259 A1 US20180116259 A1 US 20180116259A1 US 201715845626 A US201715845626 A US 201715845626A US 2018116259 A1 US2018116259 A1 US 2018116259A1
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- US
- United States
- Prior art keywords
- heating
- coffeemaker
- reservoir
- holding tank
- conduit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 161
- 239000012530 fluid Substances 0.000 title claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000010409 thin film Substances 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims 4
- 238000009835 boiling Methods 0.000 claims 2
- 238000005086 pumping Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010009 beating Methods 0.000 description 3
- 235000013361 beverage Nutrition 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/10—General methods of cooking foods, e.g. by roasting or frying
- A23L5/13—General methods of cooking foods, e.g. by roasting or frying using water or steam
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/10—General methods of cooking foods, e.g. by roasting or frying
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/54—Water boiling vessels in beverage making machines
- A47J31/542—Continuous-flow heaters
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/0611—Roasters; Grills; Sandwich grills the food being cooked between two heating plates, e.g. waffle-irons
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/067—Horizontally disposed broiling griddles
- A47J37/0676—Horizontally disposed broiling griddles electrically heated
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F75/00—Hand irons
- D06F75/08—Hand irons internally heated by electricity
- D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
- D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
- D06F75/18—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron the water being fed slowly, e.g. drop by drop, from the reservoir to a steam generator
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F75/00—Hand irons
- D06F75/38—Sole plates
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0255—Irons
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0258—For cooking
- H05B1/0269—For heating of fluids
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
- H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/46—Heating elements having the shape of rods or tubes non-flexible heating conductor mounted on insulating base
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/681—Plates having mobile parts coming into contact with the bottom of the kettles, pans, or the like
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F79/00—Accessories for hand irons
- D06F79/02—Stands or supports neither attached to, nor forming part of, the iron or ironing board
- D06F79/023—Stands or supports neither attached to, nor forming part of, the iron or ironing board with means for supplying current to the iron
- D06F79/026—Stands or supports neither attached to, nor forming part of, the iron or ironing board with means for supplying current to the iron for cordless irons
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/013—Heaters using resistive films or coatings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/021—Heaters specially adapted for heating liquids
Definitions
- the present invention relates generally to fluid heating appliances and, more particularly, to an appliance for brewing a beverage (e.g., a coffeemaker).
- a beverage e.g., a coffeemaker
- Many conventional coffeemakers have a water reservoir, a showerhead, and a flow control system.
- the flow control system includes an arrangement of tubes and a pump for generating a flow of water from the reservoir to the showerhead through the tubes.
- At least some conventional coffeemakers also include a calrod-type heating device that heats the water as the water flows from the reservoir to the showerhead.
- it can be difficult to regulate water temperature with calrod-type heat-up devices not to mention the less than desirable heat-up time and bulkiness of calrod-type heating devices.
- a coffeemaker generally comprises a reservoir and a flow control system for regulating a flow of water from the reservoir.
- the flow control system includes a thin-film heating element that defines at least a portion of a heating conduit in which water is heated.
- a coffeemaker generally comprises a reservoir, a showerhead, and a flow control system for regulating a flow of water from the reservoir to the showerhead.
- the flow control system includes a thin-film heating element that defines a heating conduit in which water is heated.
- the flow control system further includes a check valve disposed between the reservoir and the heating element, and a flow control valve disposed between the heating element and the showerhead.
- a terminal unit for a heating device having a pair of tubular, thin-film heating elements generally comprises a pair of ring-shaped terminals each sized to wrap around one of the heating elements.
- the terminal unit also includes a bus bar extending between the ring-shaped terminals to electrically connect the ring-shaped terminals to one another.
- FIG. 1 is a perspective view of one embodiment of a fluid heating appliance
- FIG. 2 is a side view of the fluid heating appliance of FIG. 1 ;
- FIG. 3 is the side view of FIG. 2 with a side panel of the appliance housing removed;
- FIG. 4 is a cross-sectional view of the fluid heating appliance of FIG. 2 taken along plane 4 - 4 of FIG. 2 ;
- FIG. 5 is a perspective view of a heating device of the fluid heating appliance of FIG. 4 ;
- FIG. 6 is a perspective view of a terminal unit of the heating device of FIG. 5 ;
- FIG. 7 is a cross-sectional view of a beating element of the heating device of FIG. 5 ;
- FIG. 8 is an enlarged portion of the cross-sectional view of FIG. 7 taken within area 8 ;
- FIG. 9 is a schematic illustration of an embodiment of a flow control system for use in the fluid beating appliance of FIG. 3 ;
- FIG. 10 is a perspective view of an embodiment of a heating device and associated showerhead for use in the fluid heating appliance of FIG. 3 ;
- FIG. 11 is a cross-sectional view of the heating device and showerhead of FIG. 10 .
- a fluid heating appliance is illustrated in the form of a coffeemaker (indicated generally by the reference numeral 100 ). It is contemplated that, in other embodiments, the fluid heating appliance may be any suitable typo of appliance that heats fluid (i.e., gas or liquid) for any suitable purpose without departing from the scope of this invention (e.g., the fluid heating appliance may be a hot water dispenser in some embodiments).
- the fluid heating appliance may be any suitable typo of appliance that heats fluid (i.e., gas or liquid) for any suitable purpose without departing from the scope of this invention (e.g., the fluid heating appliance may be a hot water dispenser in some embodiments).
- the illustrated coffeemaker 100 includes a housing 102 , a filter basket 104 detachably mounted on (e.g., suspended from) the housing 102 , and a hot plate 106 situated beneath the filter basket 104 .
- the coffeemaker 100 is configured to receive a carafe (e.g., a coffee pot 108 ) on the hot plate 106 beneath the filter basket 104 for containing a brewed beverage (e.g., coffee) discharged from the filter basket 104 during a brewing operation.
- a carafe e.g., a coffee pot 108
- At least one window is provided on the housing 102 , namely a pair of opposing first windows 110 and a pair of opposing second windows 112 in the illustrated embodiment.
- the coffeemaker 100 may be configured in any suitable manner that facilitates enabling the coffeemaker 100 to heat liquid as described herein (e.g., the coffeemaker 100 may not have the detachable filter basket 104 , the hot plate 106 , and/or the windows 110 , 112 in some contemplated embodiments).
- the illustrated coffeemaker 100 further includes a reservoir 114 , a showerhead 116 , and a flow control system (indicated generally by reference numeral 118 ) for regulating a flow of liquid from the reservoir 114 to the showerhead 116 .
- the reservoir 114 is configured to contain a liquid suitable for brewing a beverage (e.g., water), and the amount of liquid contained within the reservoir 114 is observable through the first windows 110 .
- the showerhead 116 is situated, at least in part, above the filter basket 104 for discharging liquid onto a brewable product (e.g., coffee grounds) placed on a filter inside the filter basket 104 .
- a brewable product e.g., coffee grounds
- the flow control system 118 includes a pump 120 , a holding tank 122 , and a heating device (indicated generally by reference numeral 124 ) connected in flow communication with one another by a suitable network of conduits.
- the network includes: an upstream conduit 126 which connects the reservoir 114 to the pump 120 ; a column conduit 128 which connects the pump 120 to the holding tank 122 ; a downstream conduit 130 which connects the holding tank 122 to the heating device 124 ; and a ventilation conduit 132 which connects the holding tank 122 to the exterior of the housing 102 for ventilating the network to the ambient.
- the flow control system 118 may have any suitable components arranged in any suitable manner that facilitates supplying liquid from the reservoir 114 to the heating device 124 (e.g., the flow control system 118 may not include the pump 120 and/or the holding tank 122 in some contemplated embodiments, or the flow control system 118 may have a different network of conduits in other embodiments).
- the heating device 124 includes at least one thin-film heating element, namely a first heating element 136 and a second heating element 138 in the illustrated embodiment.
- the heating device 124 may be configured with any suitable number of thin-film heating elements (e.g., the heating device 124 may have only one heating element in some embodiments, or the heating device 124 may have more than two heating elements in other embodiments).
- each of the heating elements 136 , 138 is tubular and has a first end 140 , a second end 142 , and a multi-layer body 144 extending from the first end 140 to the second end 142 .
- the body 144 has a radially inner layer in the form of a substrate 146 , and a radially outer layer in the form of an electrically conductive material 148 deposited on the substrate 146 .
- each heating element 136 , 138 of the heating device 124 is said to be a “thin-film” heating element in the sense that the substrate 146 and the electrically conductive material 148 have a collective thickness that is only marginally greater than the thickness of the substrate 146 itself (i.e., the material 148 forms a thin film on the substrate 146 ).
- the first heating element 136 and the second heating element 138 are substantially identical (i.e., are made in the same manner using the same materials so as to have the same overall construction within accepted manufacturing tolerances).
- the substrate 146 of the heating elements 136 , 138 may be a glass substrate (e.g., a borosilicate substrate, a quartz substrate, etc.), and the electrically conductive material 148 of the heating elements 136 , 138 may be a metal oxide material (e.g., a tin oxide material).
- the first heating element 136 is shown in FIGS. 7 and 8 , it is understood that the second heating element 138 is configured to be substantialiy identical.
- the heating elements 136 , 138 may not be substantially identical (e.g., the first heating element 136 may have its substrate 146 made of a first composition, and its electrically conductive material 148 made of a second composition; whereas the second heating element 138 may have its substrate 146 made of a third composition that is different than the first composition, and its electrically conductive material 148 made from a fourth composition that is different than the second composition).
- each heating element 136 , 138 of the heating device 124 may have its substrate 146 and its electrically conductive material 148 made from any suitable composition(s) that facilitate enabling the heating element(s) 136 , 138 to function as described herein.
- the substrate 146 forms at least a segment of an interior surface 150 of the body 144 , and the interior surface 150 defines a heating conduit 152 which extends through the body 144 from the first end 140 to the second end 142 .
- an additional layer of the body 144 e.g., a coating
- the electrically conductive material 148 forms at least a segment of an exterior surface 154 of the body 144 .
- the electrically conductive material 148 completely covers the radially outer side of the substrate 146 , in the sense that the material 148 wraps completely around the substrate 146 from near the first end 140 to near the second end 142 .
- the material 148 may not completely cover the radially outer side of the substrate 146 but, rather, may instead be deposited on the substrate 146 in any suitable pattern (e.g., the material 148 may be deposited in a pattern of circumferentially spaced-apart lines, or a grid-like formation, that extends from near the first end 140 to near the second end 142 ).
- the body 144 e.g., the substrate 146 and the electrically conductive material 148
- the illustrated coffeemaker 100 has a light source (e.g., at least one light emitting diode (LED) 156 ) for emitting light (e.g., a colored light such as red light, green light, blue light, etc.) through the heating conduit 152 to illuminate the liquid disposed within the heating conduit 152 .
- a light source e.g., at least one light emitting diode (LED) 156
- LED light emitting diode
- the LSDs 156 facilitate illuminating bubbles in the liquid when the heating elements 136 , 138 heat the liquid and as the bubbles rise through the heating conduit 152 ).
- the illustrated LEDs 156 are disposed near the first ends 140 of the heating elements 136 , 138 as set forth in more detail below, the LEDs 156 may be disposed at any suitable location(s) in other embodiments.
- the body 144 e.g., the substrate 146 and/or the electrically conductive material 148
- the body 144 may be opaque (and the LEDs 156 therefore absent from the coffeemaker construction) without departing from the scope of this invention.
- the heating elements 136 , 138 are oriented substantially parallel to one another and are held in spaced-apart relation via a grommet (or spacer) 158 , and the grommet 158 engages a bracket 161 of the housing 102 to facilitate stabilizing the heating elements 136 , 138 within the housing 102 .
- each of the heating elements 136 , 138 is attached at its first end 140 to a one-way (or check) valve 162 via a first coupling 164 such that the heating conduit 152 is in flow communication with the downstream conduit 130 across the one-way valve 162 .
- Each of the heating elements 136 , 138 is also attached at its second end 142 to the showerhead 116 via a second coupling 166 such that the heating conduit 152 is in flow communication with the showerhead 116 .
- the couplings 164 , 166 are fabricated from a material that facilitates electrically and thermally isolating the heating elements 136 , 138 from the one-way valve 162 and the showerhead 116 , respectively (e.g., the couplings 164 , 166 may be fabricated from a plastic or rubber material).
- the one-way valve 162 is substantially transparent in the illustrated embodiment, and the LEDs 156 are mounted beneath the one-way valve 162 on a ledge 160 of the housing 102 to emit light through the one-way valve 162 into the heating conduit 152 .
- the illustrated heating device 124 further includes a first terminal 168 and a second terminal 170 attached to each of the heating elements 136 , 138 .
- the first terminal 168 is ring-shaped and wraps around the body 144 near the first end 140 in electrical contact with the material 148 .
- the second terminal 170 is ring-shaped and wraps around the body 144 near the second end 142 in electrical contact with the material 148 .
- the terminals 168 , 170 may have any suitable shape and may be electrically connected to the material 148 of the body 144 in any suitable manner that facilitates enabling the heating elements 136 , 138 to function as described herein.
- the first terminals 168 are electrically connected to one another via a first bus bar 172 to form a first terminal unit (indicated generally by reference numeral 174 ), thereby enabling electrical current to flow from one of the first terminals 168 to the other of the first terminals 168 across the first bus bar 172 .
- the second terminals 170 are electrically connected to one another via a second bus bar 176 to form a second terminal unit (indicated generally by reference numeral 178 ), thereby enabling electrical current to flow from one of the second terminals 170 to the other of the second terminals 170 across the second bus bar 176 . Because the first terminal unit 174 and the second terminal unit 178 are substantially identical in the illustrated embodiment, only the first terminal unit 174 is represented in FIG. 6 .
- the first terminals 168 may not be electrically connected to one another via the first bus bar 172
- the second terminals 170 may not be electrically connected to one another via the second bus bar 176
- the terminal units 174 , 178 may be configured to suit any number of heating elements (e.g., the first terminal unit 174 may have four first terminals 168 electrically connected together by the first bus bar 172 if the heating device 124 has four heating elements).
- the material 148 may not extend from near the first end 140 to near the second end 142 , but may instead be limited to a central region of the body 144 such that the terminals 168 , 170 are electrically connected to the body 144 at the central region of the body 144 rather than near the ends 140 , 142 or the body 144 .
- each of the terminals 168 , 170 and each of the bus bars 172 , 176 have a wire port 180 that facilitates electrically connecting wires to the terminal units 174 , 178 .
- the material 148 of each beating element 136 , 138 is electrically connectable to a suitable power supply (e.g., a battery stowed within the housing 102 or a remote power supply) via the wires.
- each heating element 136 , 138 When electrical current is thereby supplied to each heating element 136 , 138 , the electrical current flows from the first terminal 168 to the second terminal 170 across the electrically conductive material 148 . Because the material 148 naturally resists the flow of current therethrough, the material 148 heats up as a result. Such heating of the material 148 causes the substrate 146 to be heated by virtue of the substrate 146 being in conductive heat transfer with the material 148 . This facilitates heating any fluid (e.g., water) disposed within the heating conduits 152 .
- any fluid e.g., water
- the electrical current supplied to the electrically conductive material 148 is regulated by a control unit 182 (shown in FIG. 3 ) disposed within the housing 102 . More specifically, the control unit 182 modulates the flow of electrical current from the power supply through the electrically conductive material 148 during operation of the coffeemaker 100 to control the temperature of the substrate 146 and, hence, the temperature of the liquid flowing through the heating conduits 152 .
- control unit 182 may be operatively connected to a suitable temperature sensor (e.g., a bimetallic temperature switch 184 , shown in FIGS. 3 and 4 ) for regulating a temperature of the heating elements 136 , 138 (such as, for example, to facilitate preventing the heating elements 136 , 138 from overheating if little or no water is inside heating conduits 152 ).
- a suitable temperature sensor e.g., a bimetallic temperature switch 184 , shown in FIGS. 3 and 4
- the control unit 182 suitably includes a microcontroller and a memory for storing instructions to be executed by the microcontroller when modulating electrical current to the heating element(s) 136 , 138 in response to a selection by the user.
- the user presses a button on an interface of the coffeemaker 100 (or a remote interface, such as a wireless device).
- the control unit 182 responds by supplying electrical current to the heating elements 136 , 138 , and the electrical current flows across the material 148 of each heating element 136 , 138 via it associated terminals 168 , 170 . This raises the temperature of the substrate 136 and, hence, the temperature inside the heating conduit 152 .
- the control unit 182 Before, during, or after supplying current to the heating elements 136 , 138 , the control unit 182 also operates the pump 120 to supply water from the reservoir 114 to the heating elements 136 , 138 via the conduits 126 , 128 , 130 , and the water enters the heating conduits 152 via the one-way valve 162 . As the temperature of the water within the heating conduits 152 is raised and the pressure inside the heating conduits 152 increases, the water evacuates the heating conduits 152 into the filter basket 104 via the showerhead 116 . Once the heating conduits 152 have been at least partially evacuated, additional water is permitted to flow into the heating conduits 152 via the one-way valve 162 .
- the holding tank 122 gravitationally pressurizing the water flowing from the reservoir 114 to the heating device 124 to facilitate ensuring that water is supplied to the heating elements 136 , 138 despite whether the level of water within the reservoir 114 is low.
- a flow control valve 186 may be disposed between the heating element(s) 136 , 138 and the showerhead 116 , as shown schematically in FIG. 9 .
- the flow control valve 186 may be configured to prevent the heated water from prematurely evacuating the heating conduit(s) 152 until a predetermined water temperature is reached.
- the control unit 182 may be configured to operate the flow control valve 186 to inhibit the heated water from prematurely evacuating the heating conduit(s) 152 until a predetermines water temperature is reached.
- the water may be heated to a desired temperature, which is selectable from a plurality of predetermined temperatures.
- the fluid heating appliance 100 may instead have a heating device (indicated generally by reference numeral 188 ) and associated showerhead 190 .
- the heating device 188 includes a frame 192 (e.g., a silicone frame) and a pair of thin-film heating elements 194 mounted in spaced relation on the frame 192 such that the frame 192 substantially seals around the bottom and sides of each heating element 194 .
- the heating elements 194 are in the form of substantially rectangular panes (e.g., are substantially planar objects), such that a heating conduit 196 having an open-top, generally cuboidal volumetric shape is defined between the heating elements 134 .
- a one-way valve 198 is connected to the frame 192 in flow communication with the bottom of the heating conduit 196 , and the shower head 190 is connected to the frame 192 in flow communication with the open top of the heating conduit 196 .
- the one-way valve 198 is also configured for connection to the downstream conduit 130 to place the downstream conduit 130 in flow communication with the heating conduit 196 across the one-way valve 198 .
- the heating device 188 may have only one heating element 194 , with an additional sidewall of the frame 192 in place of the other heating element 194 , for example.
- Each of the heating elements 194 is constructed much like the heating elements 136 , 138 above, in the sense that each heating element 194 has a substrate, an electrically conductive material deposited on the substrate, and a pair of bus bars 199 suitably attached to, or deposited on, the substrate.
- the control unit 182 When electrical current is supplied to the bus bars 199 by the control unit 182 , the current flows across the electrically conductive material and heats the substrate to, in turn, heat the conduit 196 . Water in the conduit 196 is heated as a result, and the heated water evacuates the conduit 196 toward the open top of the conduit 196 and spills over into the shower head 190 for delivery to the filter basket 104 .
- the heating device 188 may be viewable through the window(s) 112 of the housing 102 , and may be illuminated by the light source (e.g., the LEDs 156 ), in a manner similar to that of heating device 124 set forth above.
- the control unit 182 operates the one-way valve 198 and the heating element(s) 194 in a manner similar to that set forth above for one-way valve 162 and heating elements 136 , 138 (e.g., to induce water flew into conduit 196 , regulate the temperature within conduit 196 , etc.).
- the coffeemaker 100 having the heating device 124 and/or 188 heats water more rapidly and to a more precise temperature than at least some conventional calrod-type heating devices, thereby improving the overall operating efficiency of the coffeemaker 100 .
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Abstract
Description
- This application claims the benefit of U.S. Provisional Application No. 61/980,468 filed an Apr. 16, 2014, which is incorporated by reference herein in its entirety.
- The present invention relates generally to fluid heating appliances and, more particularly, to an appliance for brewing a beverage (e.g., a coffeemaker).
- Many conventional coffeemakers have a water reservoir, a showerhead, and a flow control system. The flow control system includes an arrangement of tubes and a pump for generating a flow of water from the reservoir to the showerhead through the tubes. At least some conventional coffeemakers also include a calrod-type heating device that heats the water as the water flows from the reservoir to the showerhead. However, it can be difficult to regulate water temperature with calrod-type heat-up devices, not to mention the less than desirable heat-up time and bulkiness of calrod-type heating devices.
- It would be useful, therefore, to provide a coffeemaker with a smaller heating device that enables water to be heated quicker and to a more precise temperature.
- In one embodiment, a coffeemaker generally comprises a reservoir and a flow control system for regulating a flow of water from the reservoir. The flow control system includes a thin-film heating element that defines at least a portion of a heating conduit in which water is heated.
- In another embodiment, a coffeemaker generally comprises a reservoir, a showerhead, and a flow control system for regulating a flow of water from the reservoir to the showerhead. The flow control system includes a thin-film heating element that defines a heating conduit in which water is heated. The flow control system further includes a check valve disposed between the reservoir and the heating element, and a flow control valve disposed between the heating element and the showerhead.
- In yet another embodiment, a terminal unit for a heating device having a pair of tubular, thin-film heating elements generally comprises a pair of ring-shaped terminals each sized to wrap around one of the heating elements. The terminal unit also includes a bus bar extending between the ring-shaped terminals to electrically connect the ring-shaped terminals to one another.
-
FIG. 1 is a perspective view of one embodiment of a fluid heating appliance; -
FIG. 2 is a side view of the fluid heating appliance ofFIG. 1 ; -
FIG. 3 is the side view ofFIG. 2 with a side panel of the appliance housing removed; -
FIG. 4 is a cross-sectional view of the fluid heating appliance ofFIG. 2 taken along plane 4-4 ofFIG. 2 ; -
FIG. 5 is a perspective view of a heating device of the fluid heating appliance ofFIG. 4 ; -
FIG. 6 is a perspective view of a terminal unit of the heating device ofFIG. 5 ; -
FIG. 7 is a cross-sectional view of a beating element of the heating device ofFIG. 5 ; -
FIG. 8 is an enlarged portion of the cross-sectional view ofFIG. 7 taken withinarea 8; -
FIG. 9 is a schematic illustration of an embodiment of a flow control system for use in the fluid beating appliance ofFIG. 3 ; -
FIG. 10 is a perspective view of an embodiment of a heating device and associated showerhead for use in the fluid heating appliance ofFIG. 3 ; and -
FIG. 11 is a cross-sectional view of the heating device and showerhead ofFIG. 10 . - Corresponding reference characters indicate corresponding parts throughout the several views of the drawings.
- Referring to the drawings, and in particular to
FIGS. 1 and 2 , a fluid heating appliance is illustrated in the form of a coffeemaker (indicated generally by the reference numeral 100). It is contemplated that, in other embodiments, the fluid heating appliance may be any suitable typo of appliance that heats fluid (i.e., gas or liquid) for any suitable purpose without departing from the scope of this invention (e.g., the fluid heating appliance may be a hot water dispenser in some embodiments). - The illustrated
coffeemaker 100 includes ahousing 102, afilter basket 104 detachably mounted on (e.g., suspended from) thehousing 102, and ahot plate 106 situated beneath thefilter basket 104. In this manner, thecoffeemaker 100 is configured to receive a carafe (e.g., a coffee pot 108) on thehot plate 106 beneath thefilter basket 104 for containing a brewed beverage (e.g., coffee) discharged from thefilter basket 104 during a brewing operation. - To enable viewing of internal componentry of the
coffeemaker 100 during its operation, at least one window is provided on thehousing 102, namely a pair of opposingfirst windows 110 and a pair of opposingsecond windows 112 in the illustrated embodiment. In other embodiments, however, thecoffeemaker 100 may be configured in any suitable manner that facilitates enabling thecoffeemaker 100 to heat liquid as described herein (e.g., thecoffeemaker 100 may not have thedetachable filter basket 104, thehot plate 106, and/or thewindows - With reference now to
FIG. 3 , the illustratedcoffeemaker 100 further includes areservoir 114, ashowerhead 116, and a flow control system (indicated generally by reference numeral 118) for regulating a flow of liquid from thereservoir 114 to theshowerhead 116. Thereservoir 114 is configured to contain a liquid suitable for brewing a beverage (e.g., water), and the amount of liquid contained within thereservoir 114 is observable through thefirst windows 110. Theshowerhead 116 is situated, at least in part, above thefilter basket 104 for discharging liquid onto a brewable product (e.g., coffee grounds) placed on a filter inside thefilter basket 104. - The
flow control system 118 includes apump 120, aholding tank 122, and a heating device (indicated generally by reference numeral 124) connected in flow communication with one another by a suitable network of conduits. In the illustrated embodiment, the network includes: anupstream conduit 126 which connects thereservoir 114 to thepump 120; acolumn conduit 128 which connects thepump 120 to theholding tank 122; adownstream conduit 130 which connects theholding tank 122 to theheating device 124; and aventilation conduit 132 which connects theholding tank 122 to the exterior of thehousing 102 for ventilating the network to the ambient. Alternatively, theflow control system 118 may have any suitable components arranged in any suitable manner that facilitates supplying liquid from thereservoir 114 to the heating device 124 (e.g., theflow control system 118 may not include thepump 120 and/or theholding tank 122 in some contemplated embodiments, or theflow control system 118 may have a different network of conduits in other embodiments). - As shown in
FIGS. 4 and 5 , theheating device 124 includes at least one thin-film heating element, namely afirst heating element 136 and asecond heating element 138 in the illustrated embodiment. Without departing from the scope of this invention, theheating device 124 may be configured with any suitable number of thin-film heating elements (e.g., theheating device 124 may have only one heating element in some embodiments, or theheating device 124 may have more than two heating elements in other embodiments). - Referring now to
FIGS. 7 and 8 , each of theheating elements first end 140, asecond end 142, and amulti-layer body 144 extending from thefirst end 140 to thesecond end 142. Thebody 144 has a radially inner layer in the form of asubstrate 146, and a radially outer layer in the form of an electricallyconductive material 148 deposited on thesubstrate 146. As used herein, eachheating element heating device 124 is said to be a “thin-film” heating element in the sense that thesubstrate 146 and the electricallyconductive material 148 have a collective thickness that is only marginally greater than the thickness of thesubstrate 146 itself (i.e., thematerial 148 forms a thin film on the substrate 146). - In the illustrated embodiment, the
first heating element 136 and thesecond heating element 138 are substantially identical (i.e., are made in the same manner using the same materials so as to have the same overall construction within accepted manufacturing tolerances). For instance, thesubstrate 146 of theheating elements conductive material 148 of theheating elements first heating element 136 is shown inFIGS. 7 and 8 , it is understood that thesecond heating element 138 is configured to be substantialiy identical. - In other embodiments, the
heating elements first heating element 136 may have itssubstrate 146 made of a first composition, and its electricallyconductive material 148 made of a second composition; whereas thesecond heating element 138 may have itssubstrate 146 made of a third composition that is different than the first composition, and its electricallyconductive material 148 made from a fourth composition that is different than the second composition). Alternatively, eachheating element heating device 124 may have itssubstrate 146 and its electricallyconductive material 148 made from any suitable composition(s) that facilitate enabling the heating element(s) 136, 138 to function as described herein. - In the illustrated embodiment, the
substrate 146 forms at least a segment of aninterior surface 150 of thebody 144, and theinterior surface 150 defines aheating conduit 152 which extends through thebody 144 from thefirst end 140 to thesecond end 142. In an alternative embodiment, an additional layer of the body 144 (e.g., a coating) may be disposed on a radially inner side of thesubstrate 146 such that the additional layer forms some or all of theinterior surface 150. - The electrically
conductive material 148, on the other hand, forms at least a segment of anexterior surface 154 of thebody 144. For example, in the illustrated embodiment, the electricallyconductive material 148 completely covers the radially outer side of thesubstrate 146, in the sense that thematerial 148 wraps completely around thesubstrate 146 from near thefirst end 140 to near thesecond end 142. In another contemplated embodiment, thematerial 148 may not completely cover the radially outer side of thesubstrate 146 but, rather, may instead be deposited on thesubstrate 146 in any suitable pattern (e.g., thematerial 148 may be deposited in a pattern of circumferentially spaced-apart lines, or a grid-like formation, that extends from near thefirst end 140 to near the second end 142). - Referring back to
FIGS. 4 and 5 , the body 144 (e.g., thesubstrate 146 and the electrically conductive material 148) are substantially transparent in the illustrated embodiment, thereby enabling liquid within theheating conduit 152 to be viewed from outside of thehousing 102 through thesecond windows 112. In this manner, the illustratedcoffeemaker 100 has a light source (e.g., at least one light emitting diode (LED) 156) for emitting light (e.g., a colored light such as red light, green light, blue light, etc.) through theheating conduit 152 to illuminate the liquid disposed within theheating conduit 152. This enhances the overall aesthetic appeal of thecoffeemaker 100 during operation (e.g., theLSDs 156 facilitate illuminating bubbles in the liquid when theheating elements LEDs 156 are disposed near thefirst ends 140 of theheating elements LEDs 156 may be disposed at any suitable location(s) in other embodiments. Alternatively, the body 144 (e.g., thesubstrate 146 and/or the electrically conductive material 148) may be opaque (and theLEDs 156 therefore absent from the coffeemaker construction) without departing from the scope of this invention. - In the illustrated embodiment, the
heating elements grommet 158 engages abracket 161 of thehousing 102 to facilitate stabilizing theheating elements housing 102. Moreover, each of theheating elements first end 140 to a one-way (or check)valve 162 via afirst coupling 164 such that theheating conduit 152 is in flow communication with thedownstream conduit 130 across the one-way valve 162. Each of theheating elements second end 142 to theshowerhead 116 via asecond coupling 166 such that theheating conduit 152 is in flow communication with theshowerhead 116. - In the illustrated embodiment, the
couplings heating elements way valve 162 and theshowerhead 116, respectively (e.g., thecouplings way valve 162 is substantially transparent in the illustrated embodiment, and theLEDs 156 are mounted beneath the one-way valve 162 on aledge 160 of thehousing 102 to emit light through the one-way valve 162 into theheating conduit 152. - The illustrated
heating device 124 further includes afirst terminal 168 and asecond terminal 170 attached to each of theheating elements first terminal 168 is ring-shaped and wraps around thebody 144 near thefirst end 140 in electrical contact with thematerial 148. Similarly, thesecond terminal 170 is ring-shaped and wraps around thebody 144 near thesecond end 142 in electrical contact with thematerial 148. In alternative embodiments, theterminals material 148 of thebody 144 in any suitable manner that facilitates enabling theheating elements - Referring now to
FIGS. 5 and 6 , thefirst terminals 168 are electrically connected to one another via afirst bus bar 172 to form a first terminal unit (indicated generally by reference numeral 174), thereby enabling electrical current to flow from one of thefirst terminals 168 to the other of thefirst terminals 168 across thefirst bus bar 172. Similarly, thesecond terminals 170 are electrically connected to one another via asecond bus bar 176 to form a second terminal unit (indicated generally by reference numeral 178), thereby enabling electrical current to flow from one of thesecond terminals 170 to the other of thesecond terminals 170 across thesecond bus bar 176. Because the firstterminal unit 174 and the secondterminal unit 178 are substantially identical in the illustrated embodiment, only the firstterminal unit 174 is represented inFIG. 6 . - In some contemplated embodiments the
first terminals 168 may not be electrically connected to one another via thefirst bus bar 172, and thesecond terminals 170 may not be electrically connected to one another via thesecond bus bar 176. Moreover, in other contemplated embodiments, theterminal units terminal unit 174 may have fourfirst terminals 168 electrically connected together by thefirst bus bar 172 if theheating device 124 has four heating elements). Alternatively, thematerial 148 may not extend from near thefirst end 140 to near thesecond end 142, but may instead be limited to a central region of thebody 144 such that theterminals body 144 at the central region of thebody 144 rather than near theends body 144. - In the illustrated embodiment, each of the
terminals wire port 180 that facilitates electrically connecting wires to theterminal units terminals material 148, thematerial 148 of each beatingelement housing 102 or a remote power supply) via the wires. - When electrical current is thereby supplied to each
heating element first terminal 168 to thesecond terminal 170 across the electricallyconductive material 148. Because thematerial 148 naturally resists the flow of current therethrough, the material 148 heats up as a result. Such heating of the material 148 causes thesubstrate 146 to be heated by virtue of thesubstrate 146 being in conductive heat transfer with thematerial 148. This facilitates heating any fluid (e.g., water) disposed within theheating conduits 152. - In the illustrated embodiment, the electrical current supplied to the electrically
conductive material 148 is regulated by a control unit 182 (shown inFIG. 3 ) disposed within thehousing 102. More specifically, thecontrol unit 182 modulates the flow of electrical current from the power supply through the electricallyconductive material 148 during operation of thecoffeemaker 100 to control the temperature of thesubstrate 146 and, hence, the temperature of the liquid flowing through theheating conduits 152. - Optionally, the
control unit 182 may be operatively connected to a suitable temperature sensor (e.g., abimetallic temperature switch 184, shown inFIGS. 3 and 4 ) for regulating a temperature of theheating elements 136, 138 (such as, for example, to facilitate preventing theheating elements control unit 182 suitably includes a microcontroller and a memory for storing instructions to be executed by the microcontroller when modulating electrical current to the heating element(s) 136, 138 in response to a selection by the user. - In one example of operating the
coffeemaker 100 to brew coffee, the user presses a button on an interface of the coffeemaker 100 (or a remote interface, such as a wireless device). Thecontrol unit 182 responds by supplying electrical current to theheating elements material 148 of eachheating element terminals substrate 136 and, hence, the temperature inside theheating conduit 152. - Before, during, or after supplying current to the
heating elements control unit 182 also operates thepump 120 to supply water from thereservoir 114 to theheating elements conduits heating conduits 152 via the one-way valve 162. As the temperature of the water within theheating conduits 152 is raised and the pressure inside theheating conduits 152 increases, the water evacuates theheating conduits 152 into thefilter basket 104 via theshowerhead 116. Once theheating conduits 152 have been at least partially evacuated, additional water is permitted to flow into theheating conduits 152 via the one-way valve 162. - As shown in
FIG. 3 , because the illustratedholding tank 122 is elevated in relation to the max-fill marker 134 of the reservoir 114 (and in relation to the one-way valve 162), theholding tank 122 gravitationally pressurizing the water flowing from thereservoir 114 to theheating device 124 to facilitate ensuring that water is supplied to theheating elements reservoir 114 is low. - Optionally, in some contemplated embodiments (e.g., embodiments that do not include the pump 120), a
flow control valve 186 may be disposed between the heating element(s) 136, 138 and theshowerhead 116, as shown schematically inFIG. 9 . In this manner, theflow control valve 186 may be configured to prevent the heated water from prematurely evacuating the heating conduit(s) 152 until a predetermined water temperature is reached. For example, thecontrol unit 182 may be configured to operate theflow control valve 186 to inhibit the heated water from prematurely evacuating the heating conduit(s) 152 until a predetermines water temperature is reached. Thus, in some embodiments, the water may be heated to a desired temperature, which is selectable from a plurality of predetermined temperatures. - Referring now to
FIGS. 10 and 11 , rather than havingheating device 124 andshowerhead 116, thefluid heating appliance 100 may instead have a heating device (indicated generally by reference numeral 188) and associatedshowerhead 190. In the illustrated embodiment, theheating device 188 includes a frame 192 (e.g., a silicone frame) and a pair of thin-film heating elements 194 mounted in spaced relation on theframe 192 such that theframe 192 substantially seals around the bottom and sides of eachheating element 194. - The
heating elements 194 are in the form of substantially rectangular panes (e.g., are substantially planar objects), such that aheating conduit 196 having an open-top, generally cuboidal volumetric shape is defined between theheating elements 134. A one-way valve 198 is connected to theframe 192 in flow communication with the bottom of theheating conduit 196, and theshower head 190 is connected to theframe 192 in flow communication with the open top of theheating conduit 196. The one-way valve 198 is also configured for connection to thedownstream conduit 130 to place thedownstream conduit 130 in flow communication with theheating conduit 196 across the one-way valve 198. Optionally, in an alternative embodiment, theheating device 188 may have only oneheating element 194, with an additional sidewall of theframe 192 in place of theother heating element 194, for example. - Each of the
heating elements 194 is constructed much like theheating elements heating element 194 has a substrate, an electrically conductive material deposited on the substrate, and a pair ofbus bars 199 suitably attached to, or deposited on, the substrate. When electrical current is supplied to the bus bars 199 by thecontrol unit 182, the current flows across the electrically conductive material and heats the substrate to, in turn, heat theconduit 196. Water in theconduit 196 is heated as a result, and the heated water evacuates theconduit 196 toward the open top of theconduit 196 and spills over into theshower head 190 for delivery to thefilter basket 104. - Moreover, the
heating device 188 may be viewable through the window(s) 112 of thehousing 102, and may be illuminated by the light source (e.g., the LEDs 156), in a manner similar to that ofheating device 124 set forth above. Suitably, thecontrol unit 182 operates the one-way valve 198 and the heating element(s) 194 in a manner similar to that set forth above for one-way valve 162 andheating elements 136, 138 (e.g., to induce water flew intoconduit 196, regulate the temperature withinconduit 196, etc.). - In accordance with the embodiments set forth herein, the
coffeemaker 100 having theheating device 124 and/or 188 heats water more rapidly and to a more precise temperature than at least some conventional calrod-type heating devices, thereby improving the overall operating efficiency of thecoffeemaker 100. - When introducing elements of the present invention or the preferred embodiment(s) thereof, the articles “a”, “an”, “the”, and “said” are intended to mean that there are one or more of the elements. The terms “comprising”, “including”, and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements.
- As various changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
Claims (19)
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- 2015-04-15 WO PCT/US2015/025881 patent/WO2015160890A1/en active Application Filing
- 2015-04-15 EP EP15780609.2A patent/EP3132654A4/en not_active Withdrawn
- 2015-04-16 US US14/688,932 patent/US20150297024A1/en not_active Abandoned
- 2015-04-16 WO PCT/US2015/026262 patent/WO2015161135A1/en active Application Filing
- 2015-04-16 US US14/688,636 patent/US9854824B2/en not_active Expired - Fee Related
- 2015-04-16 EP EP15780339.6A patent/EP3131446A4/en not_active Withdrawn
- 2015-04-16 WO PCT/US2015/026256 patent/WO2015161132A1/en active Application Filing
- 2015-04-16 WO PCT/US2015/026236 patent/WO2015161115A2/en active Application Filing
- 2015-04-16 EP EP15780528.4A patent/EP3132203A1/en not_active Withdrawn
- 2015-04-16 EP EP15779734.1A patent/EP3132083A4/en not_active Withdrawn
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2017
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Also Published As
Publication number | Publication date |
---|---|
EP3132654A1 (en) | 2017-02-22 |
EP3132654A4 (en) | 2018-01-31 |
EP3131446A1 (en) | 2017-02-22 |
EP3131446A4 (en) | 2018-01-10 |
EP3132083A2 (en) | 2017-02-22 |
US20150297029A1 (en) | 2015-10-22 |
EP3132203A1 (en) | 2017-02-22 |
EP3132083A4 (en) | 2018-06-20 |
US20150305093A1 (en) | 2015-10-22 |
WO2015160890A1 (en) | 2015-10-22 |
WO2015161115A2 (en) | 2015-10-22 |
US20150299936A1 (en) | 2015-10-22 |
US20150297024A1 (en) | 2015-10-22 |
WO2015161115A3 (en) | 2015-12-10 |
WO2015161132A1 (en) | 2015-10-22 |
US9854824B2 (en) | 2018-01-02 |
WO2015161135A1 (en) | 2015-10-22 |
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