CN108458474A - A kind of liquid heating - Google Patents

A kind of liquid heating Download PDF

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Publication number
CN108458474A
CN108458474A CN201810113460.3A CN201810113460A CN108458474A CN 108458474 A CN108458474 A CN 108458474A CN 201810113460 A CN201810113460 A CN 201810113460A CN 108458474 A CN108458474 A CN 108458474A
Authority
CN
China
Prior art keywords
heating
outer tube
liquid
inner tube
tube
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.)
Pending
Application number
CN201810113460.3A
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Chinese (zh)
Inventor
杜少玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Haide Jinggong Electronic Technology Co Ltd
Original Assignee
Foshan Haide Jinggong Electronic Technology Co 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 Foshan Haide Jinggong Electronic Technology Co Ltd filed Critical Foshan Haide Jinggong Electronic Technology Co Ltd
Priority to CN201810113460.3A priority Critical patent/CN108458474A/en
Priority to PCT/CN2018/097171 priority patent/WO2019148785A1/en
Publication of CN108458474A publication Critical patent/CN108458474A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/121—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/128—Preventing overheating
    • F24H15/132—Preventing the operation of water heaters with low water levels, e.g. dry-firing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/288—Accumulation of deposits, e.g. lime or scale
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/335—Control of pumps, e.g. on-off control
    • F24H15/34—Control of the speed of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/16—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
    • F24H1/162—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled using electrical energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/281—Input from user
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/395—Information to users, e.g. alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • 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
    • 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
    • H05B2203/022—Heaters specially adapted for heating gaseous material

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Resistance Heating (AREA)

Abstract

The invention discloses a kind of liquid heating, which includes inner tube, outer tube and end cover, and the periphery wall of inner tube is configured with helical form flow-guiding structure；Outer tube is set in the outside of helical form flow-guiding structure；It is suitable for installation heating component on the periphery wall of outer tube；It is separated by scheduled radial clearance between the internal perisporium and helical form flow-guiding structure of outer tube；Runner is formed between inner tube and outer tube, at least one end open of runner is covered by end cover；It is provided with inlet and liquid outlet in the cavity wall of runner；End cover includes：Annular end wall, is configured at the first flange of annular end wall inner periphery, and is configured at the second flange of annular end wall outer periphery.The present invention is designed by using the combination for being fixed on the stainless steel wire of inner tube periphery wall, the outer tube with heating component and end cover, improve the edible safety of heating liquid, sealing structure is readily produced, and reduces cost, and enhances the high voltage performance of heating device.

Description

A kind of liquid heating
Technical field
The present invention relates to the technical field of liquid heater more particularly to a kind of liquid heatings.
Background technology
The device of liquid laser heating is generally used for needing continuously going out in the heating electrical appliance of hot water, such as coffee machine, Heating device in beverage heater, heating steam engine.Currently, the common device to liquid laser heating includes matching on the market The inner and outer tubes used are closed, outer tube therein is stainless pipe thick film heating element, and inner tube outer surface is arranged with threaded The package glue of protrusion, makes to constitute runner between package glue and outer pipe internal surface, the material for wrapping up glue is generally silica gel or rubber.
But the existing device to liquid laser heating has the following defects：
(1) silica gel is in the environment of hot water, can be saturated into causing to be bubbled inside it, block runner；Rubber material holds Be also easy to produce peculiar smell, food-grade rubber production technology is complicated, of high cost, and when rubber meets water in high temperature hyperbaric environment, understand because Peculiar smell, aging are generated for temperature is excessively high so that rubber softening stickness even falls off, and blocks runner, water yield is caused to become smaller very To not being discharged；
(2) moreover, it is achieved that there are mainly two types of sealing means between inner and outer tubes, one is be arranged between inner and outer pipes Sealing ring, this sealing means are easy leak occur because of sealing ring aging；Another way processes both ends of the inner tube turns up Side, inner tube are tightly connected by flanging and outer tube, and this sealed connection mode is suitable in bearing anticyclonic environment, however Inner tube flanging process is complex and of high cost, and technical difficulty is higher；
(3) in addition, most users generally use tap water or mineral water to be heated by liquid heating, originally Contain calcium ions and magnesium ions in water or mineral water, when water is heated to 70 DEG C or more, the calcium and magnesium substance in water can crystallize generation incrustation scale, Under the conditions of high-temperature boiling, and under the collective effect of the stickums such as water-borne glue body, bacterium and organic matter and carbonate, can shape At the hard scale being adhered to each other with container (or pipe surface), the thermal coefficient of incrustation scale is smaller, when incrustation scale is assembled to a certain extent If not clearing up still, the heat-transfer effect of heating circuit can be reduced, or even heater element is burnt out because of hot-spot.It is this closed In heating device, when use is difficult the assembly degree for finding incrustation scale, and assembling for incrustation scale can make the service life of heater element and safety At serious influence.
Invention content
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of liquid heatings, by adopting With the combination design for the helical form flow-guiding structure, the outer tube with heating component and end cover for being fixed on inner tube periphery wall, can drop The manufacture of low Hermetical connecting structure reduces manufacturing cost, and enhances the high temperature high voltage resistant performance of heating device.
The purpose of the present invention adopts the following technical scheme that realization：
A kind of liquid heating, including：The periphery wall of inner tube, said inner tube is configured with helical form flow-guiding structure；Outer tube, The outer tube is set in the outside of the helical form flow-guiding structure；It is suitable for installation heating component on the periphery wall of the outer tube；Institute It states and is separated by scheduled radial clearance between the internal perisporium of outer tube and the helical form flow-guiding structure；Said inner tube and the outer tube it Between form runner, at least one end open of the runner is covered by end cover；It is provided with inlet in the cavity wall of the runner And liquid outlet；The end cover includes：Annular end wall；It is configured at the first flange of the annular end wall inner periphery；And configuration The second flange in the annular end wall outer periphery；The annular end wall lid is located on the end of said inner tube and the outer tube, And first flange and the internal perisporium of said inner tube weld together, the periphery wall of second flange and the outer tube welds Together.
Further, the ranging from 0.05mm-0.5mm of the scheduled radial clearance.
Further, the helical form flow-guiding structure is formed by the spiral metal wire being set in said inner tube.
Further, the spiral metal wire is stainless steel wire, the periphery wall welding of the stainless steel wire and said inner tube Together；And/or the axial cross section shape of the spiral metal wire is that triangle is either trapezoidal or rectangle, and/or Flush is distinguished at person, the both ends of said inner tube and the both ends of the outer tube.
Further, said inner tube and the outer tube are stainless steel tube, and the end cover is stainless steel end cap.
Further, the heating component includes：The heating component includes：It is configured on the periphery wall of the outer tube Insulating medium layer, and the heating circuit that is configured on the insulating medium layer, the heating circuit include being fixed on the insulation The both ends of multiple heating resistors on dielectric layer and electrode, the heating resistor are electrically connected with the electrode respectively.
Further, the extending direction of each heating resistor is consistent with the length direction of the outer tube；The inlet It is connected with water pump；The heating circuit further includes the first warming sensor, and be electrically connected with the first warming sensor First controller；The first warming sensor is configured at the position of the close liquid outlet of the outer tube, and described first The temperature information that controller is used to be sent out according to the first warming sensor, controls speed and/or the institute of the water pump feed liquor State the heating power of heating resistor.
Further, multiple heating resistors are distributed around the periphery wall of the outer tube；The liquid heating further includes Second warming sensor and the second controller being electrically connected with the second warming sensor；The second warming sensor It is arranged on the outer tube and is arranged close to the heating resistor, the outer tube temperature for detecting its present position；Described second Controller is preset first when the outer tube temperature and is heated for receiving the outer tube temperature that the second warming sensor is sent out When being higher than the first preset temperature threshold in the period, controls the heating circuit open circuit and/or send out empty burning prompting message.
Further, the second warming sensor also proximates the liquid outlet setting, and is passed close to second warming The power that the power density of the heating resistor of sensor is more than the circumferential heating resistor far from the second warming sensor is close Degree；The second controller is additionally operable to when the outer tube temperature received is pre- higher than second in the second default heating time section If when temperature threshold, controlling the heating circuit open circuit and/or sending out the prompting message of incrustation scale limit protection.
Further, the inlet and the liquid outlet are arranged in said inner tube, said inner tube correspond to it is described into The position of liquid mouth is configured with liquid inlet conduit, and the position that said inner tube corresponds to the liquid outlet is configured with eluate conduit, at least described Liquid inlet conduit relative to said inner tube centerline dip arrange.
Compared with prior art, the beneficial effects of the present invention are：Inner tube and outer tube are formed into runner by end cover End is connected and sealed, and is fastened on especially by end cover behind the end of inner and outer pipes again through the first flange and thereon Two flange are welded with inner and outer pipes, and the mode of the independent processing of Hermetical connecting structure is avoided convenient for manufacture outside inner tube The complicated technology of flange, it is easy to accomplish batch production reduces manufacturing cost, and sealing effect is preferable, improves heating device The long-term stability for bearing high temperature and high pressure environment.
Description of the drawings
Fig. 1 is a kind of configuration schematic diagram of liquid heating provided in an embodiment of the present invention；
Fig. 2 is the dimensional structure diagram of Fig. 1；
Fig. 3 is the overlooking structure diagram of Fig. 2；
Fig. 4 be Fig. 3 in A-A to sectional view.
In figure：1, inner tube；11, helical form flow-guiding structure；12, inlet；121, liquid inlet conduit；13, liquid outlet；131, go out Fluid catheter；14, runner；20, heating component；21, outer tube；211, insulating medium layer；22, heating circuit；221, heating resistor； 222, electrode；223, the first warming sensor；224, the second warming sensor；3, end cover；31, the first flange；32, second Flange.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific implementation mode, the present invention is described further, it should be noted that in not phase Under the premise of conflict, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination Example.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction " "upper", "lower", " preceding ", The orientation or positional relationship of the instructions such as " rear ", "left", "right", "horizontal", "vertical", "top", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated dress It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limitation of the present invention. In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance.
In description of the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, can be fixedly connected, may be a detachable connection, or be integrally connected；It can be with It is mechanical connection, can also be electrical connection；Can be directly connected to, it can also indirectly connected through an intermediary or two Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be Concrete meaning in invention.
It please refers to shown in Fig. 1-4, shows a kind of structure of liquid heating provided in an embodiment of the present invention, the liquid Heating device includes inner tube 1, outer tube 21 and the heating component 20 on the periphery wall of outer tube 21, the periphery wall of the inner tube 1 Configured with helical form flow-guiding structure 11, outer tube 21 is set in the outside of helical form flow-guiding structure 11, the helical form flow-guiding structure 11 With the periphery wall of inner tube 1 and the internal perisporium of outer tube 21 surround jointly for heated liquid by spiral runner 14.Outer tube It is separated by scheduled radial clearance between 21 internal perisporium and helical form flow-guiding structure 11, the setting of the radial clearance is convenient for configure There is the inner tube 1 of helical form flow-guiding structure 11 to be inserted in outer tube 21, be additionally favorable for flowing of the liquid in runner 14, convenient for flowing Liquid is fully heated.It should be noted that it is appreciated that inner tube 1 it is substantially placed in the middle be located at outer tube 21 inside, between the radial direction Gap is equivalent to the half of 21 inner circumferential diameter of outer tube and the difference of the outer diameter D of helical form flow-guiding structure 11.In this way, configured with Runner 14 is formed between the inner tube 1 and outer tube 21 of helical form flow-guiding structure 11, at least one end open of the runner 14 is by sealed end The capping of lid 3 (both ends open of runner 14 is covered by end cover 3 in the present embodiment).Also, it is arranged in the cavity wall of the runner There are inlet 12 and liquid outlet 13.The end cover 3 includes annular end wall, is configured at the first flange of the inner periphery of annular end wall 31, and it is configured at the second flange 32 of the outer periphery of annular end wall, annular end wall lid is located at the end of inner tube 1 and outer tube 21 On, first flange 31 and the internal perisporium of inner tube 1 weld together, and the periphery wall of the second flange 32 and outer tube 21 is welded on one Rise, that is, end cover 3 by after being fastened on the end of inner tube 1 and outer tube 21 by the first flange 31, the second flange 32 with Inner tube 1 and outer tube 21 weld together, and are tightly connected to realize.This side by the independent processing of Hermetical connecting structure Formula is easy to produce in batches, can reduce manufacturing cost, and sealing effect is good, improve heating device and bear for a long time convenient for manufacture The stability of high temperature and high pressure environment.
In this way, hot liquid to be added enters from inlet 12 by the periphery wall of helical form flow-guiding structure 11 and inner tube 1 and outer After in the runner 14 that the internal perisporium of pipe 21 is formed, while hot liquid to be added is flowed along runner 14, it is mounted on the outer of outer tube 21 Heating component 20 on peripheral wall can heat the liquid of flowing, the heat which generates by after outer tube 21 with Liquid in runner 14 carries out heat exchange, and to realize the laser heating to liquid, and end cover 3 passes through the side of welding Formula encloses the runner 14 formed by inner tube 1 and outer tube 21 so that the liquid heating can bear the environment of high temperature and pressure.Most Afterwards, the liquid after heated is flowed out from liquid outlet 13.Preferably, water pump can be configured at inlet 12, with to spiral stream Fluid under pressure is constantly conveyed in road 14.
As preferred embodiment, scheduled radial clearance between the internal perisporium and helical form flow-guiding structure 11 of outer tube 21 Range be set as 0.05mm-0.5mm, convenient for the inner tube 1 for being configured with helical form flow-guiding structure 11 is easily inserted in outer tube 21 While interior, it is thus also avoided that lead to length side of the liquid directly by the radial clearance along inner tube 1 because radial clearance is excessive It, cannot be abundant to liquid without carrying out water conservancy diversion by the helical form flow-guiding structure 11 on 1 periphery wall of inner tube to liquid outlet 13 is flow to Heating；Or because radial clearance is too small, liquid stagnation in helical form flow-guiding structure 11 is caused, and receive heating component 20 continuous heating causes hot-spot, as a result can cause the liquid to stagnate at this that vaporization occurs and generate steam discharge, into And cause going out liquid discontinuously and being mingled with a large amount of bubbles discharges for liquid outlet 13.Embodiment provided by the invention passes through many experiments It proving, when being arranged the radial clearance in the range of 0.05mm-0.5mm, can realize the abundant heating of liquid, heating effect Fruit is good, moreover it is possible to ensure that the flowing of liquid is smooth while avoiding liquid from crossing heating, avoid generating big bubble.
Preferably, which is formed by the spiral metal wire being set in inner tube 1, and spiral metal wire is straight It connects and exposed is contacted with liquid, it will be understood that the spiral metal wire, which should select, to be not easy to get rusty and harmless metal material.It avoids The phenomenon that package glue of such as silica gel material is bubbled because of heated aging, blocks runner, improves the service life of heating device, And also improve edible safety.
As preferred embodiment, spiral metal wire is configured to stainless steel wire, and stainless steel wire and the periphery wall of inner tube 1 weld It is connected together, avoids shaking generation noise in runner.And/or the axial cross section shape of spiral metal wire is triangle Either triangle or trapezoidal bottom edge are welded on the periphery wall of inner tube 1 by trapezoidal either rectangle, the runner knot formed in this way Structure is simple, easy to produce, and guide performance is more stable.Also, inner tube 1 is concordant with the both ends of outer tube 21 difference, convenient for sealing Periphery wall of the first flange 31 and the second flange 32 of end cap 3 respectively with the internal perisporium of inner tube 1 and outer tube 21 is welded
Preferably, it is the safety for further increasing edible, inner tube 1 is disposed as stainless steel tube, sealed end with outer tube 21 Lid 3 is set as stainless steel end cap.
In addition, as shown in Fig. 2, heating component 20 include be configured at insulating medium layer 211 on the periphery wall of outer tube 21 and The heating circuit 22 being configured on insulating medium layer 211, print burns insulating medium layer 211, the fever on the periphery wall of outer tube 21 The heat that circuit 22 generates is used to carry out heat exchange to the liquid flowed in spiral flow channel 14.Preferably, the wall thickness of outer tube 21 The wall thickness range of ranging from 0.5mm-1mm, inner tube 1 are 0.3mm-1mm.
Preferably, which includes multiple heating resistors 221 and the electrode being fixed on insulating medium layer 211 222, the both ends of heating resistor 221 are electrically connected with electrode 222 respectively, in this way, power supply is accessed at electrode 222, for the fever Resistance 221 generates heat.
Preferably, the extending direction of each heating resistor 221 is consistent with the length direction of outer tube 21, and inlet 12 is connected with water Pump (not shown).The liquid heating further includes the first warming sensor 223, and with the first warming sensor 223 The first controller (such as being controlled using pcb board in the present embodiment) of electrical connection, which is configured at outer tube Close liquid outlet 13 position at.As can be seen from Figure, liquid outlet 13 is opened in inner tube 1 in the present embodiment, this first Warming sensor 223 is that can be arranged at the radial position nearest from liquid outlet 13 of outer tube 21 close proximity to liquid outlet 13. First warming sensor 223 is by detection close to the barrel temperature of the outer tube 21 of liquid outlet 13, you can approximation detection liquid outlet 13 Fluid temperature, the temperature information which sends out according to the first warming sensor 223, control water pump feed liquor speed and/or The heating power of heating resistor 221.Preferably, which is positioned close to the same of the position of liquid outlet 13 When and be axially away from heating resistor 221 as possible, in order to accurately detect the temperature of 13 liquid of liquid outlet.In this way, this One warming sensor 223 is used to detect the temperature of liquid and feeds back to pcb board, which goes out liquid temperature data according to actual measurement Liquid required temperature is set out with user to be compared, to automatically adjust the heating power of heating resistor 221, or by controlling water Pump is realized and is accurately controlled to going out liquid temperature to adjust the flow velocity into liquid in air stream enter runner 14.
For ease of being uniformly heated up to the liquid in screw-shaped flow paths 14, multiple heating resistors 221 are around outer tube 21 Periphery wall distribution setting, preferably can approaches uniformity distribution setting so that the liquid in 221 face runner 14 of heating resistor, To transmit heat in time to the liquid of flowing.In addition, the liquid heating further includes the second warming sensor 224, Yi Jiyu (second controller for example equally uses above-mentioned in the present embodiment the second controller of second warming sensor 224 electrical connection Pcb board controls), which is arranged on outer tube 21 and is arranged close to heating resistor, for detecting the second temperature The outer tube temperature of 224 position of propagated sensation sensor, second controller (pcb board) be used to receive the second warming sensor sends out outside Tube temperature degree, and when the outer tube temperature is higher than the first preset temperature threshold in the first default heating time section, control heating electric Road 22 is breaking and/or sends out empty burning prompting message.This is because when not having liquid in runner 14, heating resistor 221 produces Raw heat cannot pass to liquid radiating by outer tube wall, lead to outer tube wall (the i.e. first default heating time in a short time In section) it is rapidly heated and (is higher than the first preset temperature threshold), the outer tube that pcb board can be sent according to the second warming sensor 224 Temperature information controls heating circuit open circuit, and/or sends out empty burning prompting message and avoid heating to realize that dry combustion method is protected Component 20 is not burned out.Preferably, the length direction of the first warming sensor 223 and the second warming sensor 224 along outer tube 21 It is arranged, convenient for burning print and laser trimming process.
As preferred embodiment, due to temperature highest at liquid outlet 13, the speed that incrustation scale is assembled faster, can be by the Two warming sensors 224 are arranged relative to inlet 12 closer to liquid outlet 13, it is preferable that the first warming sensor 223 is opposite It is arranged closer to liquid outlet 13 in the second warming sensor 224.To realize the targeting aggregation of incrustation scale, can make close to the second warming The power density of the heating resistor 221 of sensor 224 is more than the power of the circumferential heating resistor far from the second warming sensor 224 Density, under non-dry-fire condition, second controller (pcb board) is additionally operable to receive the outer tube temperature that the second warming sensor 224 is sent out Degree, and when the outer tube temperature received is higher than the second preset temperature threshold in the second default heating time section, control fever Circuit breaker, and/or send out the prompting message of incrustation scale limit protection.
Specific incrustation scale testing principle is as described below：By making the heating resistor 221 near the second warming sensor 224 Operating temperature (with power density in relation to) be higher than other regions heating resistor 221 so that incrustation scale first this second The periphery of warming sensor 224 starts to assemble, and the passenger collecting volume of incrustation scale can be more than the incrustation scale passenger collecting volume in other regions, work as incrustation scale After assembly reaches a certain level, since the thermal resistance of incrustation scale is big, i.e., thermal coefficient is small, is persistently given in runner 14 in heating resistor 221 When liquid transmits heat, can heat caused by the heating resistor 221 of Ji Jieshuigouchu be led to not due to the presence of incrustation scale Liquid can be passed to by the way that stainless steel outer tube 21 is longitudinal, and then the temperature of the barrel of outer tube 21 at this is caused to increase, then, the Two warming sensors 224 detect outer tube temperature at this time and feed back to pcb board, send out and user is reminded to need to clear up the letter of incrustation scale Breath, and control heating circuit open circuit to stop heating, effectively prevent because incrustation scale assembly cause heating resistor 221 hot-spot due to Lead to the risk burnt, and incrustation scale concentrates near liquid outlet 13, incrustation scale is cleared up convenient for user.As shown in Fig. 2, to realize hair The increase of thermal resistance power density can pass through the line thickness of reduction 224 periphery heating resistor of the second warming sensor.In this way, The second warming sensor 224 has the function of integrated detection, it can be achieved that the function that anti-dry protection and incrustation scale detection are reminded, excellent The function of the liquid heating is changed.
Specifically, the method for incrustation scale detectable limit protection is as follows：
S1, after liquid heating begins to warm up liquid (under non-dry-fire condition), the second warming sensor starts to detect Outer tube temperature, by the outer tube temperature and second controller (such as being controlled using above-mentioned pcb board in the present embodiment) preset second Preset temperature threshold is compared, and is generated when outer tube temperature degree reaches the second preset temperature threshold and is executed order.
S2 is disconnected according to the execution order coordination electrode, and is sent out the information reminding of incrustation scale limit protection, reminds user Clear up the incrustation scale that liquid outlet is nearby assembled.
Such as liquid outlet 13 goes out liquid temperature at 60~98 DEG C, temperature that the second warming sensor 224 detects is 55 ~91 DEG C, with the increase of heating time, 224 periphery of the second warming sensor starts to collect scaling, with the increase of incrustation scale, when When incrustation scale is assembled to a certain extent, heating resistor temperature increases, the heat lateral transport generated to the second warming sensor 224, it detects outer tube temperature at this time and feeds back to pcb board, be compared with the preset such as 100 DEG C of rotection thresholds of pcb board, when When the outer tube temperature is more than 100 DEG C, pcb board control deenergization simultaneously prompts incrustation scale limit protection, and user is reminded to need ejected wash water Dirt.
Preferably, as shown in figure 4, inlet 12 and liquid outlet 13 are arranged in inner tube 1, inner tube 1 corresponds to inlet 12 Position be configured with liquid inlet conduit 121, the position that inner tube 1 corresponds to liquid outlet 13 is configured with eluate conduit 131, at least liquid inlet conduit 121 relative to inner tube 1 centerline dip arrange so that liquid convenient for flow into.In addition, for ease of installing liquid inlet conduit 121 And eluate conduit 131, the liquid inlet conduit 121 and eluate conduit 131 are installed in the cavity that inner tube 1 is centrally formed.
Liquid heating provided in an embodiment of the present invention, sealed connection form structure is simple, and manufacturing cost is low, high temperature Performance stabilization service life is long under hyperbaric environment, and stainless steel spiral shape runner edible safety coefficient is high, stable in outlet water temperature, and Incrustation scale detection is increased, the service life of heating element is improved, there is application and popularization value higher.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto, The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention Claimed range.

Claims (10)

1. a kind of liquid heating, which is characterized in that including：
The periphery wall of inner tube, said inner tube is configured with helical form flow-guiding structure；
Outer tube, the outer tube are set in the outside of the helical form flow-guiding structure；It is suitable for installation on the periphery wall of the outer tube to add Hot component；It is separated by scheduled radial clearance between the internal perisporium of the outer tube and the helical form flow-guiding structure；
Runner is formed between said inner tube and the outer tube, at least one end open of the runner is covered by end cover；It is described It is provided with inlet and liquid outlet in the cavity wall of runner；
The end cover includes：Annular end wall；It is configured at the first flange of the annular end wall inner periphery；It is described with being configured at Second flange of annular end wall outer periphery；The annular end wall is covered on the end of said inner tube and the outer tube, and described First flange and the internal perisporium of said inner tube weld together, and the periphery wall of second flange and the outer tube is welded on one It rises.
2. liquid heating as described in claim 1, which is characterized in that the scheduled radial clearance is ranging from 0.05mm-0.5mm。
3. liquid heating as claimed in claim 2, which is characterized in that the helical form flow-guiding structure is described by being set in Spiral metal wire in inner tube is formed.
4. liquid heating as claimed in claim 3, which is characterized in that the spiral metal wire is stainless steel wire, described Stainless steel wire and the periphery wall of said inner tube weld together；And/or the axial cross section shape of the spiral metal wire is Triangle is either trapezoidal or rectangle, and/or, flush is distinguished at the both ends of said inner tube and the both ends of the outer tube.
5. liquid heating according to any one of claims 1 to 4, which is characterized in that said inner tube and the outer tube It is stainless steel tube, the end cover is stainless steel end cap.
6. the liquid heating as described in right wants 5, which is characterized in that the heating component includes：It is configured at the outer tube Periphery wall on insulating medium layer, and the heating circuit that is configured on the insulating medium layer, the heating circuit include solid Due to the multiple heating resistors and electrode on the insulating medium layer, the both ends of the heating resistor are electrical with the electrode respectively Connection.
7. liquid heating as claimed in claim 6, which is characterized in that the extending direction of each heating resistor with it is described The length direction of outer tube is consistent；The inlet is connected with water pump；The liquid heating further includes the first warming sensor, with And the first controller being electrically connected with the first warming sensor；The first warming sensor is configured at leaning on for the outer tube At the position of the nearly liquid outlet, the temperature information that first controller is used to be sent out according to the first warming sensor, Control the speed of the water pump feed liquor and/or the heating power of the heating resistor.
8. liquid heating as claimed in claim 6, which is characterized in that multiple heating resistors are around the outer of the outer tube Peripheral wall is distributed；The liquid heating further includes the second warming sensor and is electrically connected with the second warming sensor Second controller；The second warming sensor is arranged on the outer tube and is arranged close to the heating resistor, for detecting The outer tube temperature of its present position；The second controller is used to receive the outer tube temperature that the second warming sensor is sent out, And when the outer tube temperature is higher than the first preset temperature threshold in the first default heating time section, control the heating circuit It open circuit and/or sends out and empty burns prompting message.
9. liquid heating as claimed in claim 8, which is characterized in that the second warming sensor also proximate it is described go out Liquid mouth is arranged, and is more than circumferential separate described second close to the power density of the heating resistor of the second warming sensor The power density of the heating resistor of warming sensor；The second controller is additionally operable to when the outer tube temperature that receive is the When being higher than the second preset temperature threshold in two default heating time sections, controls the heating circuit open circuit and/or send out water The prompting message of dirty limit protection.
10. liquid heating as claimed in claim 1 or 2, which is characterized in that the inlet and the liquid outlet are all provided with It sets in said inner tube, the position that said inner tube corresponds to the inlet is configured with liquid inlet conduit, goes out described in said inner tube correspondence The position of liquid mouth be configured with eluate conduit, at least described liquid inlet conduit relative to said inner tube centerline dip arrange.
CN201810113460.3A 2018-02-05 2018-02-05 A kind of liquid heating Pending CN108458474A (en)

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PCT/CN2018/097171 WO2019148785A1 (en) 2018-02-05 2018-07-26 Liquid heating device

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CN110645700A (en) * 2019-10-23 2020-01-03 中国科学院宁波材料技术与工程研究所 Electric heating device for pipeline
WO2021129785A1 (en) * 2019-12-26 2021-07-01 佛山市海德精工电子科技有限公司 Inner tube for liquid heating device, and liquid heating device and producing method therefor
WO2024108352A1 (en) * 2022-11-21 2024-05-30 深圳市虎一科技有限公司 Thick film heater, heater, and heating device

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