WO2014195842A2 - Dispositif et procédé permettant la préparation d'un liquide chaud ou d'une vapeur chaude - Google Patents

Dispositif et procédé permettant la préparation d'un liquide chaud ou d'une vapeur chaude Download PDF

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Publication number
WO2014195842A2
WO2014195842A2 PCT/IB2014/061876 IB2014061876W WO2014195842A2 WO 2014195842 A2 WO2014195842 A2 WO 2014195842A2 IB 2014061876 W IB2014061876 W IB 2014061876W WO 2014195842 A2 WO2014195842 A2 WO 2014195842A2
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WO
WIPO (PCT)
Prior art keywords
machine
heating device
liquid
steam
control unit
Prior art date
Application number
PCT/IB2014/061876
Other languages
English (en)
Other versions
WO2014195842A3 (fr
Inventor
Herve Gaulard
Thierry Gourand
Kwok Yui Lawrence NG
Original Assignee
Heatex Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heatex Ltd. filed Critical Heatex Ltd.
Publication of WO2014195842A2 publication Critical patent/WO2014195842A2/fr
Publication of WO2014195842A3 publication Critical patent/WO2014195842A3/fr

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Classifications

    • 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
    • A47J27/00—Cooking-vessels
    • A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
    • 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
    • A47J31/545—Control or safety devices
    • 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
    • A47J31/56—Water boiling vessels in beverage making machines having water-level controls; having temperature controls
    • 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
    • A47J36/00—Parts, details or accessories of cooking-vessels

Definitions

  • the present invention relates to an apparatus and a method for heating a flowing liquid.
  • coffee machines filter coffee machines, espresso machines with or without pods, kettles, hot water dispensers and multi drink machines generally do not allow an instantaneous use. In fact, a warm-up time is required such that a certain amount of liquid should be heated before a drink can be provided.
  • heating means are currently used to heat water for domestic appliances, cited below are few examples of the existing apparatuses.
  • Publication number FR2766693 discloses a tubular heating element which is brazed into a main tube in order to heat circulating water.
  • This type of element is used in filter coffee machines, for example, however it does not yield efficient results, most of the energy produced by the tubular heating element is dissipated in the air. Furthermore, the flow of this type of construction is low and does not allow instantaneous distribution of an adequate volume of hot water for comfortable use. Another disadvantage of this construction is that it does not provide sufficient pressure to espresso coffee machines-pressure type.
  • Publication number FR27 4321 discloses a tubular heating element brazed under a heating plate. This kind of element is used in kettles, however it does not yield efficient results, most of the energy produced by the tubular heating element is dissipated in the air. Furthermore, the heating time depends on the device's container and on the quantity of water to be heated. This apparatus is not suitable for the preparation of instant beverages or beverage preparation under pressure. In such a device one may heat more water than actually required therefore a waste of water and energy.
  • Publication number FR2713432 discloses a tubular heating element immersed within the liquid to be heated. This kind of element is used for example in kettles or heaters in the espresso machine and offers a better solution since energy being dissipated by the resistance is disposed within the liquid to be heated.
  • the heating time depends on the quantity of water inside the device's container. This apparatus is not suitable for preparing instant beverage, it requires an important warm-up time before the liquid reaches to the required temperature. Furthermore in such a device one may heat more water than actually required therefore a waste of water and energy.
  • Publication number FR2841116 discloses a tubular heating element shaped into a block of aluminum, generally having high thermal inertia. This kind of element is commonly used in espresso coffee makers. In this kind of construction, a warm-up phase is necessary in order to store thermal energy in the aluminum block, which is then returned to the liquid through a channel usually arranged in a spiral inside the aluminum block. This device requires a significant long time to warm before the block has stored enough thermal energy to be effective. This device has the disadvantage of consuming more energy than necessary.
  • Publication number PR277S411 and PR2878023 disclose a screen-printed heating element with a low thermal inertia. This construction has the advantage of solving many of the disadvantages mentioned in the preceding devices, since it only heats the water needed and very fast. However it has the disadvantage of using expensive and not widely available technology which makes a device ill-suited to the production of household appliances in public. Moreover, this device is not suitable for pressure machine type espresso.
  • Prior art demonstrate different types of domestic appliances using steam, like: steam iron, steam generator, steam cleaner, coffee machine, steam cooker. These machines generally do not allow immediate use. In fact, warm-up time is necessary so that a certain amount of liquid should be heated until the steam can be produced.
  • Publication number FR2818734A1 discloses a tubular heating element shaped into a block of aluminum, generally having high thermal inertia. This element type is commonly used in steam generator for irons. In this type of construction, a warm-up phase is necessary to store thermal energy in the block which is then returned to the liquid in the steam chamber. This device requires a significant long time to warm before the block has stored enough thermal energy to be effective. This device has the disadvantage of consuming more energy than necessary.
  • Publication number EP1815773A1 discloses a tubular heating element brazed under a plate heater. This kind of element is usually used in steam cooker however it does not have very efficient performances. Most of the energy produced by the tubular heating element is dissipated in the air. Furthermore, the heating time depends on the quantity of water inside the devices container of the device. This kind of device is not suitable to obtain instant steam.
  • Publication number EP0597748A1 discloses an instantaneous steam generator. The device comprises a tubular heating element centered into an external tube. However, the heating element is not in contact with water, since there is a metallic part around the heating element. Furthermore the hollow space between the metallic part and the external tube is filled with metallic balls. Therefore, in order to obtain steam it is necessary to heat the metallic part and the metallic balls, which procedure requires a long time and energy.
  • the purpose of the present invention is to provide a machine for instant distribution of hot liquid or steam, useful for the preparation of hot beverages by heating the amount of liquid just needed to prepare said beverage and optimizing the employed energy.
  • the machine is also useful for providing continuous steam flow for a steam cleaner or a steam cooker.
  • Another advantage of the present invention is the use of common materials and common manufacturing processes.
  • said at least one control unit [120] is adapted to control the flow rate of said liquid into said at least one heating device [110], in a predetermined manner correlated with said measured temperature and thereby providing said liquid output at a predetermined temperature.
  • said microprocessor is configured to collect data from said at least one temperature sensor [510], process said data, and simultaneously control the temperature of said at least one heating device [110] and the flow rate of said at least one pump into said at least one heating device [110], thereby providing said liquid output at a predetermined temperature.
  • control unit [120] is integrated into devices selected from the group consisting of: coffee maker, espresso machine, teapot, hot beverage machine, steam generation, steam generation iron, steam station, steam cleaner, cloths pressure, window cleaner or water purifiers.
  • control unit [120] As defined above, wherein said control unit [120] further comprises an electrical connection to at least one outlet regulator [190];
  • an electrical heating element [310] centered inside an outer main tube [210], with a flow space [320] between said element [310] and the interior of said main tube [210];
  • heating device [110] is adapted to heat said liquid flowing through said guided flow space in a predetermined manner correlated with said liquid's flow rate and with the effective flow path of said guided flow space.
  • heating device [110] is integrated into devices selected from the group consisting of: coffee maker, espresso machine, teapot, hot beverage machine, steam generation, steam generation iron, steam station, steam cleaner, cloths pressure, window cleaner or water purifiers.
  • control unit [120] operatively connected to said at least one heating device [110] and to its said at least one temperature sensor [510];
  • At least one regulation unit [180] operatively connected to said control unit [120] and to at least one liquid source, and
  • control unit is adapted to control the flow rate of said liquid into said heating device [110], in a predetermined manner correlated with said measured temperature, thereby providing said liquid output at a predetermined temperature
  • the present invention discloses an improved hot beverage machine that offers higher quality service, compared to the devices that are currently on the market, by avoiding the preheating stage required as in prior art, and thereby reducing the energy consumption and avoiding unnecessary waste of liquid.
  • the present invention also decreases the energy consumption, by avoiding the procedure, as in the prior art machines, which keep a certain quantity of liquid warm for the following service.
  • the present invention by its construction is also suitable for the production and distribution of hot beverages such as espresso, requiring high pressure of IS bars and higher.
  • the present invention is also suitable for steam generation, used in some coffee machines through specific nozzle, to warm other liquids such as milk or cream for example.
  • this invention provide the following majors advantages compared with prior art:
  • Figure 1 presents a view of the complete machine [100] assembly
  • Figure 2 presents a view of the heating device [110] assembly
  • Figure 3 presents a cross sectional view of the heating device [110] assembly
  • FIG. 4 presents a detailed sectional view A-A of the heating device [110] assembly
  • FIG. 5 presents a detailed sectional view of the heating device [110] outlet
  • FIG. 6 presents a detail section of an alternate solution for the heating device [110] outlet
  • Figure 7 presents a complete assembly and a partial sectional view of an alternative bi-tube [710] and [720] construction for the hearting device.
  • Figures 8 presents a perspective view an alternative construction for the heating element with a helical-like shape
  • Figure 9 presents a face view of an alternative construction for the heating device [110] with a helical-like shape
  • Figure 10 presents a perspective view of an alternative construction for the heating device [1101 with a U-like shape
  • Figure 11 presents a face view of an alternative construction for the heating device [110] with a U-like shape
  • Figure 12 presents a perspective view of an alternative construction for the heating device [110] with a C-like shape
  • Figure 13 presents a face view of an alternative construction for the heating device [110] with a C-like shape
  • Figure 14 A presents an ON/OFF liquid flow for a single temperature set point, as in prior art;
  • Figure 14 B present continuous liquid flow rates for several temperature set points;
  • the present invention is a new machine for an instant preparation of hot liquid or steam.
  • the invention is specially suited for the purpose of preparing hot beverages such as but not limited to: coffee, tea, hot milk, hot chocolate, espresso, cappuccino and more.
  • the new machine [100] comprises: a. at least one heating device [110];
  • At least one control unit [120] is adapted to control the flow rate of said liquid into said at least one heating device [110], in a predetermined manner correlated with said measured temperature and thereby providing said liquid output at a predetermined temperature.
  • present invention discloses a new control unit [120] useful for controlling a machine for instant preparation of hot liquid or steam, comprising: a. an electrical connection to at least one heating device [110];
  • said microprocessor is configured to collect data from said at least one temperature sensor [510], process said data, and simultaneously control the temperature of said at least one heating device [110] and the flow rate of said at least one pump into said at least one heating device [110], thereby providing said liquid output at a predetermined temperature.
  • present invention discloses a new heating device [110] useful for instantly heating liquid or steam, comprising: a. an electrical heating element [310] centered inside an outer main tube [210], with a flow space [320] between said element [310] and the interior of said main tube [210];
  • heating device [110] is adapted to heat said liquid flowing through said guided flow space in a predetermined manner correlated with said liquid's flow rate and with the effective flow path of said guided flow space.
  • Present invention also provides a method for an instant preparation of hot liquid or steam, comprising the steps of: a. obtaining a machine [100] comprising:
  • At least one temperature sensor [510] operatively connected to said at least one heating device [110];
  • control unit [120] operatively connected to said at least one heating device [110] and to its said at least one temperature sensor [ 10];
  • control unit [120] is adapted to control the flow rate of said liquid into said heating device [110], in a predetermined manner correlated with said measured temperature, thereby providing said liquid output at a predetermined temperature.
  • outlet refers hereinafter to the liquid's outlet form the heating device [110], indicated as [220] as in Figures 2 and 3.
  • flow space refers hereinafter to the volume between the external-diameter of the heating element [310] and the internal-diameter of the main tube [210], where the heated liquid flows, indicated as [320], in Figure 3, 4 and 5.
  • guided flow space refers hereinafter to the guided volume along the wire [620] placed between the external-diameter of the heating element [310] and the internal-diameter of the main tube [210], where the heated liquid flows, indicated as [630], in Figures 6 and 7.
  • FIG. 1 is a schematic diagram showing the embodiment of the heating machine of present invention, illustrated and generally indicated as [100]. Further in Figure 1 is illustrated the coffee machine [100] comprising: a heating device [110], a ' control unit [120] and regulation unit [180], a liquid source such as portable container [140], a pump [130], fluid flow connections [160], an optional percolating device [150] and a liquid receptacle such as a cup [170].
  • the container [140] is suitable for containing liquid and is connected to the pump [130] allowing the liquid in the container [140] to be pumped through the heating device [110]. Conventionally the container [140] is portable and can be removed for easy filling.
  • FIGS 2, 3 and 4 are schematic diagrams showing the embodiment of the heating device [110] demonstrating: the main tube [210] which is preferably made of, but not limited to, copper (which has a high thermal conductivity), insulated copper or any other metal or alloy with a low thermal conductivity such as stainless steel. Also demonstrated are the inlet [230] and the outlet [220] for the flowing liquid and the distance "d" between them. Also demonstrated are two sealing plugs [540] and two electrical contacts [550], located at the ends of the heating device.
  • the main tube [210] which is preferably made of, but not limited to, copper (which has a high thermal conductivity), insulated copper or any other metal or alloy with a low thermal conductivity such as stainless steel.
  • the inlet [230] and the outlet [220] for the flowing liquid and the distance "d" between them.
  • two sealing plugs [540] and two electrical contacts [550] located at the ends of the heating device.
  • the sealing plugs [540] and the electrical contacts [550] are located at both ends of the main tube [210] and the inlet [230] and the outlet [220] are preferably located perpendicular to the tube [210], as shown in Figures 1-2 and 4-13.
  • the inlet [230] and the outlet [220] are located at both ends of the main tube [210] and the sealing plugs [540] and the electrical contacts [550] are located perpendicular to the tube [210], not shown.
  • FIGS 5 and 6 are schematic diagrams showing the embodiment of the heating element [310], located inside the center of the heating device [110], comprising: an outer tube [330] which is preferably made of, but not limited to, stainless steel, a filament [350] which is centered inside the outer tube, a filling medium such as but not limited to magnesia for filling the volume [340] inside the outer tube [330], two sealing plugs [S40] made of, but not limited to, ceramic or silicone and two electrical contacts [550].
  • an outer tube [330] which is preferably made of, but not limited to, stainless steel
  • a filament [350] which is centered inside the outer tube
  • a filling medium such as but not limited to magnesia for filling the volume [340] inside the outer tube [330]
  • two sealing plugs [S40] made of, but not limited to, ceramic or silicone and two electrical contacts [550].
  • the filament [350] is connected at each end to an electrical contact [550].
  • the two electrical contacts [550] are supplied with alternating current, which further runs through the filament [350] and heats it.
  • the filament [350] is positioned in the center of the tube [330], it is electrically isolated and maintained in the center of the tube [330], by a filling medium such as a magnesium based medium which fills the volume [340] inside the tube [330].
  • the filling medium also serves as a heat conductor between the filament [350] and outer tube [330].
  • the two sealing caps [540] are used to constrain the filling medium inside the tube [330] and to center the two electrical contacts [550] and the filament [350] inside the tube [330].
  • the heating element [310] is positioned in the center of the main outer tube [210] of the heating device [110], so that the two contacts [550] protrude from the main outer tube [210], where the tubular heating element [310] is maintained at the center of the main outer tube [210] by a narrower diameter [520] and a welding [530] at both ends of the main tube as shown in Figure 5.
  • the sealing between the main outer tube [210] and tubular heating element [310] can be obtained by the aforementioned narrower diameter [520] at each end of the main outer tube [210] so mat the internal diameter thereof and the external diameter of the tubular heating element [310] are in contact.
  • This sealing can be completed by the aforementioned welding [530] between the two tubes [210] and [330] to ensure the sealing even under pressure; also shown in Figure 5.
  • the heating element [310] is positioned in the center of the main outer tube [210] of the heating device [110], so that both contacts [550] protrude the main outer tube [210], where the tubular heating element [310] is maintained at the center of the main outer tube [210] by plugs [610] as shown in Figure 6.
  • the aforementioned plugs [610] also serve as sealing plugs where both ends of the main tube closed and sealed together.
  • the aforementioned sealing plugs [610] are preferably made of silicone, but not limited to; also shown in Figure 6.
  • a wire [620J is helically wrapped around the tube [330] of the heating element [310].
  • This wire [620] is primarily made of, but not limited to, stainless steel.
  • This wire has several functions: i.
  • the wire creates a guided flow space [630] as shown in Figure 6, between the internal diameter of heating device main tube [210] and the external diameter of tube [330] of the heating element [310] and by that extending the path in which the liquid flows around the heating element [310].
  • the aforementioned guided flow helps to ensure a gradual, homogeneous and optimal heating of the liquid as it travels around the heating element [310].
  • the wire allows the tubular heating element [310] to be centered in the main outer tube [210] of the heating device [110]. iv.
  • the wire further allows the bending the heating device [110], while avoiding the deformation of the tubular heating element [310] and the heating device [110], and while keeping the centered geometry between these two; demonstrated in figures 8-13.
  • the aforementioned bent or bendable heating device enables a compact and a suitable integration into a variety of devices; also demonstrated in figures 8- 13.
  • the outlet [220] of the machine [100] is connected a liquid outlet regulator [190] for filling a receptacle such as but not limited to a cup [170], a bowl or a pot
  • the outlet regulator [190] is connected to an infusion set [150] of known construction for preparing a drink such as coffee or tea.
  • the outlet regulator [190] is connected to a nozzle [1SS] for steaming a liquid such as milk.
  • a nozzle [1SS] for steaming a liquid such as milk.
  • a temperature sensor [S10] is positioned through the outer tube [210], as showed in enlargement in Figure 5, measuring the temperature of the liquid flowing inside the heating device [110].
  • the readings of the temperature sensor [510] allow the control unit [120] to simultaneously control, in a predetermined manner, the power of the pump [130] and the power of the tubular heating element [310].
  • the temperature sensor [510] is positioned in contact with the external surface of the outer tube [210], allowing the same control method as mentioned above.
  • a control unit [120] is connected to a temperature sensor [510].
  • the control unit includes means for collecting information and data concerning temperature and or flow in order to simultaneously control, in a predetermined manner, the functioning of the pump [130] to a variation of flow rates and the temperature of tubular heating element [310] by adjusting its electrical current.
  • the control unit [120] includes a user interface allowing the user to act on the functioning of the machine [100].
  • the machine [100] when the machine [100] is in between uses, it consumes no power for the purpose of maintaining the temperature of the liquid, as in prior art.
  • the new and non obvious features of the machine [100] allow it an energy efficiency which gives it a definite advantage compared to existing devices.
  • the tubular heating element [310] only, the pump [130] only, or the pump [130] and tubular heating element [310], are activated simultaneously to allow the production and distribution of a hot liquid.
  • the liquid is introduced into the heating device [110] by the inlet [230] of the heating device [110].
  • the liquid is pumped into the heating device [110] via a pump [130].
  • the liquid arriving in the main outer tube [210] of the heating device [110] comes in contact with die tubular heating element [310] and is heated by being in contact with it in the flow space [320] formed by the main external tube [210] and the main outer tube [330] of the tubular heating element [310].
  • the liquid reaches the outlet [220] of the heating device [110] at the desired temperature having gradually been heated along the tubular heating element [310] having traveled the entire flow space [320] between inlet [230] and outlet [220] of the whole heating device [110].
  • a wire [620] is wrapped helically around the tubular heating element [310].
  • the liquid is introduced into the heating device [110] by the inlet [230] of the heating device [110].
  • the liquid is pumped into the heating device [110] via a pump [130].
  • the liquid arriving in the main outer tube [210] of the heating device [110] is guided by the helically wrapped wire [620].
  • the liquid flows through the spiral guided flow space [630] formed by the wire [620] between the outer tube main [210] and the main outer tube [330] of the tubular heating element [310], the liquid gets heated by the contact with it in space [630].
  • the liquid reaches the heater outlet [220] of the heating device [110] to the desired temperature having been gradually heated along the tubular heating element [310] having traveled the entire space helical [630] between inlet [230] and outlet [220] of the whole heating device [110].
  • the heating device [110] as described is characterized by:
  • the heating device [110] is characterized by:
  • the space [320] characterized by the difference in diameter between the outer diameter of the tube [330] of the tubular heating element [310] and the inner diameter of main outer tube [210].
  • the wire's diameter [620] is related to the difference in radius between the outside radius of tube [330] of the tubular heating element [310] and the inner radius of outer tube main [210].
  • thermocontrol by positioning one or more temperature sensors [510] on the heating device [110]. From the data provided by temperature sensors [510], an electronic control module [120] will control the electrical power of the tubular heating element [310] and of the pump [130] in such a way that the temperature liquid outlet corresponds to the choice of the manufacturer or user.
  • the temperature sensor [510] can be of type NTC [temperature sensor electronics] and positioned on the heating device [110] near the outlet [220].
  • the NTC [510] reads the temperature of the liquid in the heating device [110] and transmits it to the electronic control card [120].
  • the tubular heating element [310] is switched ON and the pump [130] is controlled cyclically so that the flow is very low. This has the effect of allowing the liquid to heat while beginning to distribute the liquid although its temperature is below the set point.
  • the pump [130] is switched ON continuously to deliver the expected flow.
  • the control is then making by controlling the pump [130] and / or tubular heating element [310] to maintain a constant temperature in the liquid supplied.
  • the control program can be provided with an analysis of the temperature gradient in order to regulate the flow rate more precisely for correcting the temperature at the outlet.
  • this NTC [510] can also be used to detect the lack of fluid in the heating device [110] and turn off the power and turn of the tubular heating element [310] to avoid overheating.
  • the container [140] may include a liquid level detection thereby avoiding an operation without liquid.
  • the pump [130] has a variable flow rate; this flow rate is managed in a conventional manner by varying an electrical power of the pump [130] in tension, intensity or frequency, depending on the type of selected pump.
  • a NTC [510] (an electronic temperature sensor) is positioned on the heating device [110] near the device's outlet [220]. The NTC [510] reads the temperature of the liquid in the heating device [110] and transmits it to the electronic control card [120]. The electronic card [120] then manages the power of the pump [130] to regulate the flow of it to ensure that the liquid temperature read by the temperature sensor [510] is always between two values defined by the construction.
  • the set points were set at 90 °C for the low value and 93 °C for the high value.
  • the temperature read by the NTC [510] is typically a lower temperature than the low value set by construction.
  • the tubular heating element [310] is powered and the pump [130] is not powered, the temperature of the liquid heats therefore very quickly inside of the whole heating device [110].
  • the pump [130] is supplied in order to obtain maximum set by the manufacturer. The flow rate and power have been calculated by the manufacturer in order to obtain the desired temperature; a steady state is expected in theoretical terms.
  • Fig 14B In another advantageous configuration type, several temperature set points are used in conjunction with several flow values, as demonstrated in Fig 14B.
  • This configuration allows better anticipation of changes in fluid temperature so as to ensure a reduced tolerance interval between the low temperature and the high temperature of the liquid.
  • This configuration also has the advantage of being able to change tile flow rate smoothly, avoiding rapid changes in flow rate, as demonstrated in Pig 14A.
  • the heater is made by two main tubes [710] and [720] linked by a lateral pipe [730].
  • Each main tube [710] and [720] comprise a tubular heating element [310],
  • the heating bodies of the heating devices [710] and [720] consist of two main outer tubes [740] and [750] preferably made of copper or stainless steel.
  • the main outer tube [740] has an inlet [760] and an outlet [770] to a pipe [730] connected preferably perpendicular to the main outer tube [740] and sealed.
  • the second main outer tube [750] is positioned near the first main outer tube [740], its first end [780] is connected to the pipe [730] and where the other end [790] is the outlet.
  • Each main outer tube [740] or [750] comprise a tubular heating element [310] positioned in the center of the main outer tube [740] or [750] of each heating device [710] or [720], so that the two contacts [550] of the tubular heating element [310] protrude the main outer tube [710] or [720].
  • the tubular heating element [310] is maintained at the center of the main outer tube [740] or [750] by the narrow shape [520] or by plugs [610] depending the type of construction.
  • a wire [620] wrapped helically can be inserted around the tube [330] of the tubular heating element [310].
  • This wire [620] is made primarily in stainless steel. It realizes three functions:
  • the tubular heating element [310] is always centered in the heater [110].
  • the heating device [110] may be bent or curved, while avoiding the deformation of the tubular heating element [310] and the deformation of the heating device [110] to keep the geometry that allows these elements to stay concentric, while maintaining a section constant for the space [320] of the liquid.
  • the ability to bend the heating device [110] enables the device to be compact and suitable for integration into various devices.
  • the heating device [110] may be bent in order to obtain, a shape of a horseshoe. It can also be curved in order to obtain a helical shape.
  • a space may be arranged so as to guide the liquid in the heating device [110], This space [320] for circulating the liquid to be heated is located between the main outer tube [210] and the tube [330] of the tubular heating element [310].
  • the helical shape of the wire [620] prints the liquid to be heated in a helical path also spacing [630], helping to ensure a gradual and homogeneous heating of the same liquid as it travels inside the heating device [110].
  • the first advantage is two separate heating devices assembly which enables two different power controls.
  • the electronic board can manage the two heating elements [310] to have the required power at each instant.
  • each element [310] is 1500W, so that when the two elements [310] are switched ON, the total power is 3000W.
  • the two elements [310] are switches ON until the required temperature is reached. After that, if the chosen flow and the difference between the container [140] temperature and the outside temperature permit, the electronic switch ON the two elements [310] to have the total power.
  • the second advantage is that, this construction reduces the length of the element [310] enabling convenience and flexibility of design of the intended products into which the heater shall be integrated.
  • the liquid passes from the first [710] to the second heating device [720] by way of a lateral pipe [730].
  • this heating device [110] can be use to produce steam.
  • This particular construction is described in Figure 1. The construction is the same as above mentioned, but with the addition of a solenoid valve for the outlet regulator [190] at the outlet [220] of the heating device [110] or [720] to prevent water exhaust during the heating process. Also to obtain steam, the set points were set at 100 °C for the low value and 130 °C for the high value.
  • the pump [130] pumps the water inside the tube [210] or [710]-[720] under a defined pressure.
  • the outlet solenoid valve [190] is closed.
  • the heater [310] heats the liquid temperature to the defined set temperature. Between 100°C and 130°C in this example.
  • the solenoid valve [190] opens and the steam is released from the heating system by the outlet [220] or [790].
  • the pump [130] continues to pump the water inside the tube at a very low flow rate. This flow rate is calculated to have a continuous steam exhaust. If for any reason the output temperature decreases under the lower set temperature, then, the solenoid valve [190] will be close to avoid obtaining hot water instead of steam.
  • This construction can also provide hot water.
  • the functions are the same but the solenoid valve [190] stays open during function.
  • the steam construction could be use for example and with no limitation to produce continuous and very fast steam for Irons, clothes pressers, window cleaners, steam stations, or coffee machines including pipes for heating or steaming milk.
  • the set of technologies and materials used ensures a cost of economic production.
  • This product is highly energy efficient due to its low thermal inertia and due to its operating mode, it heats only when needed. It is also economic in liquid since only the necessary amount of liquid is heated for the user.
  • This heater produces very fast hot water or steam and can ensure a continuous flow according with the previous specifications.
  • the heating device [110] is suitable for the production of liquid with continuous flow under pressure of about up to 20 bars.
  • This device can also produce continuous steam with the same construction further comprising a solenoid valve [190]

Abstract

La présente invention se rapporte à une machine (100) permettant une préparation instantanée d'un liquide chaude ou d'une vapeur chaude, ladite machine comprenant : a. au moins un dispositif de chauffage (110) ; b. au moins un capteur de température (51), raccordé de manière fonctionnelle au dit ou auxdits dispositifs de chauffage (110) ; c. au moins une unité de commande (120), raccordée de manière fonctionnelle au dit ou auxdits dispositifs de chauffage (110) et au dit ou auxdits capteurs de température (510) ; d. au moins une unité de régulation (180) raccordée de manière fonctionnelle à ladite ou auxdites unités de commande (120) et à au moins une source de liquide et e. au moins une pompe (130) raccordée de manière fonctionnelle à ladite ou auxdites unités de commande (120) et à une ou plusieurs unités de régulation (180), ladite ou lesdites unités de commande (120) étant conçues pour réguler le début dudit liquide dans ledit ou lesdits dispositifs de chauffage (110) selon une manière prédéterminée corrélée avec ladite température mesurée et, de ce fait, délivrant ledit liquide à une température prédéterminée.
PCT/IB2014/061876 2013-06-02 2014-06-01 Dispositif et procédé permettant la préparation d'un liquide chaud ou d'une vapeur chaude WO2014195842A2 (fr)

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ITUB20160837A1 (it) * 2016-02-19 2016-05-19 Sandenvendo Europe S P A Sistema e metodo per preparare bevande.
WO2016102218A1 (fr) * 2014-12-24 2016-06-30 Nestec S.A. Dispositif de transfert de chaleur jetable et système comprenant un tel dispositif
EP3114972A1 (fr) 2015-07-09 2017-01-11 Qbo Coffee GmbH Machine de préparation de boissons
EP3150091A1 (fr) * 2015-09-23 2017-04-05 The Richards Corporation Machine à café chauffe-eau
IT201600077849A1 (it) * 2016-07-25 2018-01-25 Gruppo Cimbali Spa Dispositivo per il riscaldamento di fluidi in continuo.
WO2018036653A1 (fr) * 2016-08-24 2018-03-01 Innosteam Swiss Sa Dispositif et procédé pour produire de l'eau chaude instantanée
GB2567213A (en) * 2017-10-06 2019-04-10 Strix Ltd Liquid heating appliances and flow heaters
WO2019069097A3 (fr) * 2017-10-06 2019-05-16 Strix Limited Appareils de chauffage de liquide et chauffe-eau à circulation
WO2019102512A1 (fr) * 2017-11-23 2019-05-31 De' Longhi Appliances S.R.L. Con Unico Socio Machine et procédé de préparation de boissons
CN111885950A (zh) * 2018-03-22 2020-11-03 卡菲塔利系统股份有限公司 包括图像采集装置的用于制作饮料的设备
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JP5883882B2 (ja) * 2010-11-26 2016-03-15 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 飲料の供給温度を正確に設定するように適合された飲料を製造するための装置

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WO2016102218A1 (fr) * 2014-12-24 2016-06-30 Nestec S.A. Dispositif de transfert de chaleur jetable et système comprenant un tel dispositif
US11026541B2 (en) 2014-12-24 2021-06-08 Societe Des Produits Nestle S.A. Disposable heat transfer device and system integrating such a device
RU2700762C2 (ru) * 2015-07-09 2019-09-19 Кбо Кофи ГмбХ Машина по приготовлению напитков
EP3114972A1 (fr) 2015-07-09 2017-01-11 Qbo Coffee GmbH Machine de préparation de boissons
WO2017005831A1 (fr) * 2015-07-09 2017-01-12 Qbo Coffee Gmbh Machine de préparation de boissons
US10786111B2 (en) 2015-07-09 2020-09-29 Qbo Coffee Gmbh Drinks preparation machine
EP3150091A1 (fr) * 2015-09-23 2017-04-05 The Richards Corporation Machine à café chauffe-eau
WO2017141281A1 (fr) 2016-02-19 2017-08-24 Sandenvendo Europe S.P.A. Système et procédé de préparation de boissons
ITUB20160837A1 (it) * 2016-02-19 2016-05-19 Sandenvendo Europe S P A Sistema e metodo per preparare bevande.
US10702094B2 (en) 2016-07-25 2020-07-07 Gruppo Cimbali S.P.A. Device for continuous heating of fluids
IT201600077849A1 (it) * 2016-07-25 2018-01-25 Gruppo Cimbali Spa Dispositivo per il riscaldamento di fluidi in continuo.
EP3275349A1 (fr) * 2016-07-25 2018-01-31 Gruppo Cimbali S.p.A. Dispositif de chauffage continu de fluides
WO2018036653A1 (fr) * 2016-08-24 2018-03-01 Innosteam Swiss Sa Dispositif et procédé pour produire de l'eau chaude instantanée
GB2567213B (en) * 2017-10-06 2020-09-16 Strix Ltd Liquid heating appliances and flow heaters
WO2019069097A3 (fr) * 2017-10-06 2019-05-16 Strix Limited Appareils de chauffage de liquide et chauffe-eau à circulation
GB2567213A (en) * 2017-10-06 2019-04-10 Strix Ltd Liquid heating appliances and flow heaters
WO2019102512A1 (fr) * 2017-11-23 2019-05-31 De' Longhi Appliances S.R.L. Con Unico Socio Machine et procédé de préparation de boissons
CN111669998B (zh) * 2017-11-23 2021-09-03 德隆奇电器单一股东有限责任公司 制备饮料的机器和方法
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CN111885950B (zh) * 2018-03-22 2022-08-19 卡菲塔利系统股份有限公司 包括图像采集装置的用于制作饮料的设备
US11944232B2 (en) 2018-07-13 2024-04-02 Caffitaly System S.P.A. Apparatus for making a beverage, comprising an image acquisition device

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