CN108518665A - Steam generator and steam oven - Google Patents
Steam generator and steam oven Download PDFInfo
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- CN108518665A CN108518665A CN201810597197.XA CN201810597197A CN108518665A CN 108518665 A CN108518665 A CN 108518665A CN 201810597197 A CN201810597197 A CN 201810597197A CN 108518665 A CN108518665 A CN 108518665A
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- Prior art keywords
- steam
- microchannel
- temperature
- steam generator
- exhaust outlet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
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- 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
- A47J27/00—Cooking-vessels
- A47J27/14—Cooking-vessels for use in hotels, restaurants, or canteens
- A47J27/16—Cooking-vessels for use in hotels, restaurants, or canteens heated by steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/12—Forms of water tubes, e.g. of varying cross-section
- F22B37/125—Bifurcates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Commercial Cooking Devices (AREA)
Abstract
The present invention provides a kind of steam generator and steam ovens, it is related to the technical field of kitchen appliance, the steam generator includes the steam generating unit for being provided with the shell of water inlet and exhaust outlet and being set in shell, steam generating unit includes the vaporizer for being provided with multiple microchannels and the calandria for being heated for vaporizer, and calandria is thermally contacted with vaporizer；After liquid enters shell by water inlet, shunted by each microchannel, and can under the action of calandria in each microchannel Quick-gasifying；Exhaust outlet is used to the steam generated in steam generating unit being discharged.The steam oven includes water tank, above-mentioned steam generator and the water pump for being delivered to the water in water tank in steam generator, and the control system of water pump and steam oven connects, and the exhaust outlet of steam generator is connected to the cooking cavity of steam oven.The steam generator and steam oven alleviate steam generator in existing steam oven lead to the problem of steam speed it is slow.
Description
Technical field
The present invention relates to kitchen appliance technical fields, more particularly, to a kind of steam generator and steam oven.
Background technology
Steam oven be in the prior art apply a kind of more universal kitchen appliance, for people culinary art bring it is prodigious
It is convenient, the culinary art experience of people is improved well.
In existing steam oven, steam generator is mostly duct type steam generator or unlimited water pond formula steam generation
Device, although and both steam generators using commonplace, there are still disadvantages, have much room for improvement.Such as：Duct type steam
Generator and unlimited water pond formula steam generator have a problem that, that is, the speed for generating steam is slow, causes to cook
The period prepared food is long.
Therefore, it is highly desirable to design a kind of new steam generator to improve above-mentioned technical problem.
Invention content
First of the present invention is designed to provide a kind of steam generator, to alleviate steam oven existing in the prior art
Middle steam generator generates the slow technical problem of speed of steam.
Steam generator provided by the invention includes being provided with the shell of water inlet and exhaust outlet and being set to the shell
In steam generating unit, the steam generating unit include be provided with multiple microchannels vaporizer and for be the gasification
The calandria of room heating, the calandria are thermally contacted with the vaporizer；After liquid enters the shell by the water inlet, quilt
Each microchannel shunting, and can under the action of the calandria in each microchannel Quick-gasifying；
The exhaust outlet is used to the steam generated in the steam generating unit being discharged.
Further, the cross-sectional shape of the microchannel is rectangular.
Further, the width of the microchannel is 1mm to 5mm, is highly 0.5mm to 4mm.
Further, the cross-sectional shape of the microchannel is circle.
Further, a diameter of 0.5mm to 5mm of the microchannel.
Further, each microchannel is parallel and arranged side by side, and each microchannel in the same plane is one
Group, the vaporizer include the multigroup microchannel being stacked.
Further, further include incrustation scale collecting chamber, each one end of the microchannel far from the water inlet with the water
Dirty collecting chamber connection；The exhaust outlet is set on the side wall of the incrustation scale collecting chamber, the gas warp of each microchannel discharge
It is discharged by the exhaust outlet after crossing the incrustation scale collecting chamber.
Further, header is additionally provided in the shell, each microchannel is equal close to one end of the water inlet
It is connected to the header, the liquid entered by the water inlet enters the corresponding microchannel by the header.
Further, the steam generating unit include the first temperature sensor and second temperature sensor, described first
Temperature sensor is set on the microchannel, and the rear portion of steam is generated on the micro-tunnel length extending direction, is used
In the wall surface temperature for detecting the microchannel；The second temperature sensor is set to the exhaust outlet, for detecting the row
The temperature of the steam of gas port discharge；
First temperature sensor and the second temperature sensor can be connect with the control system of steam oven.
Steam generator provided by the invention having the beneficial effect that compared with prior art：
Steam generator provided by the invention includes being provided with the shell of water inlet and exhaust outlet and being set in shell
Steam generating unit, steam generating unit include the vaporizer for being provided with multiple microchannels and the heating for being heated for vaporizer
Body, calandria are thermally contacted with vaporizer；It after liquid enters shell by water inlet, is shunted by each microchannel, and can be in calandria
Under the action of in each microchannel Quick-gasifying；Exhaust outlet is used to the steam generated in steam generating unit being discharged.The present invention
On the one hand the steam generator of offer uses dividing technology, flow is divided into several tiny flows by multiple microchannels, due to
The internal diameter of each microchannel is smaller so that water can moisten whole inner walls of microchannel, so that the heat exchange of steam generating unit
Area bigger；On the other hand, calandria is in direct contact with microchannel so that the heat exchange efficiency higher of steam generating unit.So
When flow enter each microchannel after, water contact with the wall surface of microchannel after can Quick-gasifying so that steam generator production
The time of raw steam compared with the prior art in steam generator can greatly reduce.
Further, since the equivalent diameter of microchannel is smaller, and side water, side steam, water resistance to compression pression is larger in addition, institute
Quickly assembled to steam side with the steam of generation and steam is pushed to advance, so as to by the incrustation scale being mixed in steam also fast speed belt
Go out microchannel so that the possibility of inside microchannels fouling substantially reduces.
Second object of the present invention is to provide a kind of steam oven, be steamed with alleviating in steam oven existing in the prior art
Vapour generator generates the slow technical problem of speed of steam.
Steam oven provided by the invention includes water tank, the steam generator described in the above and for by the water tank
In water be delivered to the water pump in the steam generator, the water pump is connect with the control system of the steam oven, the steaming
The exhaust outlet of vapour generator is connected to the cooking cavity of steam oven.
Steam oven provided by the invention having the beneficial effect that compared with prior art：
Steam oven provided by the invention includes above-mentioned steam generator, and can reach above-mentioned steam generator can reach
Advantageous effect, details are not described herein again.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the first structural schematic diagram for the steam generator that the embodiment of the present invention one provides；
Fig. 2 is second of structural schematic diagram of the steam generator that the embodiment of the present invention one provides；
Fig. 3 is the third structural schematic diagram for the steam generator that the embodiment of the present invention one provides；
Fig. 4 is the first structural schematic diagram of steam generating unit in the steam generator that the embodiment of the present invention one provides；
Fig. 5 is second of structural schematic diagram of steam generating unit in the steam generator that the embodiment of the present invention one provides；
Fig. 6 is the structural schematic diagram of steam oven provided by Embodiment 2 of the present invention；
Fig. 7 is the connection relation of water tank, water pump and steam generator in steam oven provided by Embodiment 2 of the present invention
Schematic diagram.
Icon：1- shells；2- steam generating units；3- incrustation scale collecting chambers；4- headers；11- water inlets；12-
Exhaust outlet；The microchannels 21-；22- calandrias；The first temperature sensors of 23-；24- second temperature sensors；100- steam
Generator；200- water pumps；300- water tanks.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present 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, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment one
As shown in Figure 1-Figure 3, steam generator 100 provided in this embodiment includes being provided with water inlet 11 and exhaust outlet
12 shell 1 and the steam generating unit 2 being set in shell 1, steam generating unit 2 include being provided with multiple microchannels 21
Vaporizer and calandria 22 for being heated for vaporizer, calandria 22 are thermally contacted with vaporizer；Liquid is entered by water inlet 11
After shell 1, shunted by each microchannel 21, and can under the action of calandria 22 in each microchannel 21 Quick-gasifying.Exhaust
Steam of the mouth 12 for that will be generated in steam generating unit 2 is discharged.
100 one side of steam generator provided in this embodiment uses dividing technology, by multiple microchannels 21 by flow
It is divided into several tiny flows, since the internal diameter of each microchannel 21 is smaller so that water can moisten whole inner walls of microchannel 21, from
And make the heat exchange area bigger of steam generating unit 2, according to heat transfer theory Q=KF Δs T, it is known that the vaporizer energy of micropassage type
Enough greatly improve heat exchange efficiency；On the other hand, calandria 22 is in direct contact with microchannel 21 so that steam generating unit 2 changes
Thermal efficiency higher.So when flow enter each microchannel 21 after, after contact with the wall surface of microchannel 21 can Quick-gasifying, thus
Enable steam generator 100 generate steam time compared with the prior art in steam generator 100 greatly reduce.It is micro-
The design in channel 21 also improves the voltage endurance capability of steam generator 100, using 21 heat transfer technology of microchannel, improves heat-transfer surface
Product and heat exchange efficiency, fast implement vaporization, while the diameter of microchannel 21 is smaller, and opposite heat exchange area is larger, realizes quick vapour
Change, avoids incrustation scale deposition wall surface.
Further, since the internal diameter of microchannel 21 is smaller, and side water, side steam, water resistance to compression pression is larger in addition, so
The energy of the steam expansion acting of generation is converted to kinetic energy, quickly assembles to steam side and steam is pushed to advance, improve steam
Flow velocity further enhances the heat exchange of steam and wall surface, has also taken away scale particles so that the possibility of 21 internal incrustation of microchannel
Property substantially reduces.
Specifically, shell 1 can be sealed in calandria 22 and vaporizer wherein, the material of shell 1 can be metal
Material, such as stainless steel, iron, aluminium etc.；Can also be non-metallic insulation material, such as ceramics, diatomite, silica and its mixing
Object；It can also be organic insulation material, such as glass fibre, heat-insulated felt, super cotton etc..The material of microchannel 21 can be stainless
Steel, aluminium, copper or ceramics etc., vaporizer can be integrated die-casting moldings with calandria 22.
Vaporizer is molded with 22 integrated die-casting of calandria so that the effective thermal efficiency of heating tube is higher.21 wall surface of microchannel
Temperature is higher, after the water in microchannel 21 is contacted with wall surface, can gasify rapidly, without will produce boiling, while microchannel 21
Diameter is smaller, and the heat exchange efficiency of water and 21 wall surface of microchannel is higher, and the saturated vapor quickly generated is quickly heated to dry saturation
The quality of steam or superheated steam, steam is higher.
Specifically, steam generator 100 provided in this embodiment can generate 100 DEG C of dry saturated steam in 5 seconds
Or the superheated steam of higher temperature.
Calandria 22 can be heating film (such as：Nano metal heating film) or heating tube etc., when calandria 22 is to add
When hotting mask, heating film can be set to the upper and lower surface of vaporizer, and heating film is in direct contact vaporizer and reduces space
Interior air thermal resistance, improves heat transfer efficiency, greatly reduces the outlet time.And the line relative to traditional heating tube connects
It touches, the face contact of the present embodiment, heat exchange area is significantly promoted, and improves the heat exchange efficiency of calandria 22.When calandria 22 is
When heating tube, heating tube can be disposed on the side or both sides of vaporizer.Calandria 22 is in direct contact with vaporizer, and heat passes
Conduction heat transfer, heats the region that is not contacted with calandria 22 in room Heat Conduction Material may be used and be filled, and is led by Heat Conduction Material
Heat.Filled by heating tube and vaporizer die cast or by the high material of other heat transfer efficiencies heating tube and vaporizer it
Between gap, the rate of heat addition can be greatly improved, and then can achieve the effect that quick outlet.
It need not generally be filled, adopt between microchannel 21 and calandria 22 when using heating film as calandria 22
When using heating tube as calandria 22, filling can be done according to the thickness of heating tube or does not do the design filled, the material of filling
Depending on the difference of application scenarios, different disposal is done.
Calandria 22 uses heating film or heating tube, and setting can avoid calandria 22 and water straight in the manner described above
Heating is connect, incrustation scale can be prevented to the influence of calandria 22, is conducive to the service life for improving calandria 22.
Steam generating unit 2 includes the vaporizer for being provided with multiple microchannels 21 and the calandria for being heated for vaporizer
22, calandria 22 is in direct contact with vaporizer, specifically, as shown in Figure 4 and Figure 5, vaporizer can be that cross-sectional shape is long
The width L1 of circular flat tube, flat tube can be 10mm to 180mm, and the length L2 of flat tube can be 50mm to 200mm, flat tube
Height d may be greater than the height H equal to microchannel 21, and the concrete numerical value of flat tube height can regard processing technology and design requirement
Depending on, can be equal with the height of microchannel 21 or slightly above microchannel 21 height.
Vaporizer includes multiple microchannels 21 so that the voltage endurance capability of vaporizer has a distinct increment, steam generating unit 2
Performance and safety are promoted by a relatively large margin, and reduction even is eliminated the possibility for booster occur.
The diameter of microchannel 21 is smaller, and the flowing velocity for flowing through liquid therein is bigger, can improve turbulent flow, reduces laminar flow
Boundary layer thickness and thermal-boundary-leyer thickness improve convection transfer rate to reduce thermal resistance, promote changing for steam generator 100
The thermal efficiency；Simultaneously using the structure design of multichannel, the pressure loss is advantageously reduced, when the caliber of microchannel 21 is smaller, stream
The pressure loss generated through microchannel 21 is bigger, using multichannel cocurrent, greatly reduces the pressure loss, wherein micro- in vaporizer
The quantity in channel 21 can be 2 to 20.
Alternatively, the riffled tube of pipe with small pipe diameter or the same microchannel 21 of change are different in can also using
The mode of the diameter of position generates the effect of turbulent flow, improving heat exchanging efficiency；It can also use in microchannel 21 and increase turbulent spring
The enhanced heat exchanges technology such as mode improve convective heat-transfer coefficient, reduce thermal-boundary-leyer thickness, to reduce thermal resistance, improve convection current and change
Hot coefficient promotes the heat exchange efficiency of steam generator 100.
Vaporizer can also be that, only there are one microchannel 21, which forms steam generating unit 2 with calandria 22.
In the present embodiment, the cross-sectional shape of microchannel 21 can be rectangular.
When the cross-sectional shape of microchannel 21 is rectangular, the space in vaporizer, maximum limit can be utilized to greatest extent
The heat exchange area of the increase microchannel 21 of degree, is conducive to the heat exchange efficiency for improving vaporizer, to accelerate the gasification rate of water.
Further, the cross-sectional shape of microchannel 21 can be square.
When the equivalent diameter of microchannel 21 is less than 3mm, gas liquid two-phase flow and phase-change heat transfer rule will differ from it is conventional compared with
Large scale, with the reduction of sectional dimension, the relative importance of gravity, surface tension and interfacial shear force changes, and causes
Condensation and boiling heat transfer mechanism are different from common pipe in pipe, and gas-liquid two-phase flow pattern and its transformation rule also would indicate that significantly
Scale effect.Channel is smaller, and this effect is more apparent, such as：When the internal diameter of microchannel 21 it is small to 0.5 to 1mm when, heat convection
Coefficient can increase 50% to 100%, can greatly shorten vaporization time, while the channel diameter of microchannel 21 is smaller, but its water conservancy
Equivalent diameter is larger so that liquid is more contacted with high-temperature wall surface, improving heat exchanging efficiency, so that the heat exchange effect of microchannel 21
Rate is significantly larger than the heat exchange efficiency of the pipe pipeline of existing steam generator 100.
Further, in the present embodiment, the width of microchannel 21 can be 1mm to 5mm, be highly 0.5mm to 4mm.
Alternatively, in the present embodiment, the cross-sectional shape of microchannel 21 can be circle.
Further, in the present embodiment, the diameter of microchannel 21 can be 0.5mm to 5mm.
The width of flat tube can be 16mm to 180mm.
The height of flat tube can be greater than or equal to the diameter of microchannel 21, and concrete numerical value regards processing technology and design requirement
Depending on, it can make and 21 equidimension of microchannel or slightly above microchannel 21.
In the present embodiment, each microchannel 21 can be parallel and arranged side by side, and each microchannel 21 in the same plane is
One group, vaporizer includes the multigroup microchannel 21 being stacked.
Specifically, vaporizer may include two groups of microchannels 21 being stacked, can also include three groups be stacked
21, the four groups of microchannels 21 in microchannel or five groups of microchannels 21, etc..
When microchannel 21 is more than two groups, the microchannel 21 that is not contacted with calandria 22 with same calandria 22 by contacting
The heat of microchannel 21 is transmitted to heat.
In the present embodiment, steam generator 100 can also include incrustation scale collecting chamber 3, and each microchannel 21 is far from water inlet 11
One end be connected to incrustation scale collecting chamber 3；Exhaust outlet 12 is set on the side wall of incrustation scale collecting chamber 3, what each microchannel 21 was discharged
Gas is discharged after incrustation scale collecting chamber 3 by exhaust outlet 12.
The sectional dimension of microchannel 21 is smaller, the expansion work generated during water so that and the flow velocity of steam is very fast,
After the steam outflow microchannel 21 of high flow rate enters incrustation scale collecting chamber 3, since the space in incrustation scale collecting chamber 3 is larger, steam
Flow velocity can accordingly reduce so that the larger scale particles sedimentation being mixed in steam, and smaller particle with
Incrustation scale collection can be adhered on the wall surface of incrustation scale collecting chamber 3 or rebounded and then be deposited to after the collision with wall of incrustation scale collecting chamber 3
The bottom of room 3.The design of incrustation scale collecting chamber 3 improves the clean degree of steam, reduces the incrustation scale in steam oven so that steam
Stove is easier to clean, while can also realize centralized collection and the centralized processing of incrustation scale.
Specifically, exhaust outlet 12 can be set in the respective side walls of incrustation scale collecting chamber 3, for example, it is opposite with water inlet 11
On side wall, or on the side wall adjacent with aforementioned lateral wall.
The centralized processing of incrustation scale can be the self-cleaning program by steam oven, be washed away after being dissolved incrustation scale using cold water,
Realize the separation of vapour dirt.
In the present embodiment, header 4 is also provided in shell 1, each microchannel 21 is equal close to one end of water inlet 11
It is connected to header 4, enters corresponding microchannel 21 by header 4 by the liquid that water inlet 11 enters.
The header 4 that setting is connect with water inlet 11 in shell 1, by header 4 by water current stabilization, then uniformly conveying
Into each microchannel 21 so that the shunting effect of flow is more preferable.
In the present embodiment, steam generating unit 2 may include first sensor and second sensor, first sensor setting
In on microchannel 21, and generate on 21 length extending direction of microchannel the rear portion of steam, the wall for detecting microchannel 21
Face temperature；Second sensor is set to exhaust outlet 12, the temperature of the steam for detecting the discharge of exhaust outlet 12；First temperature sensing
Device 23 and second temperature sensor 24 can be connect with the control system of steam oven.
The first temperature sensor 23, and the first temperature sensing is arranged in the rear portion that steam is generated on 21 extending direction of microchannel
Device 23 can be connect with the control system of steam oven, and the first temperature sensor 23 can monitor the temperature of vaporizer in real time, and and
When feed back to the control system of steam oven so that control system can take appropriate measures to the temperature of vaporizer in real time.Together
Second sensor is arranged in reason at exhaust outlet 12, and second temperature sensor 24 can be connect with the control system of steam oven, the
Two temperature sensors 24 can monitor the temperature of steam at exhaust outlet 12 in real time, and timely feedback to the control system of steam oven,
Control system is taken appropriate measures in real time according to the temperature change of steam at exhaust outlet 12.
The steam generator 100 can be applied to the kitchen appliances such as steam oven, oven, disinfection cabinet, dish-washing machine, micro-wave oven, carry
For the saturated vapor or superheated steam of various temperature.
Embodiment two
As shown in Figure 6 and Figure 7, steam oven provided in this embodiment include water tank 300, embodiment one provide steam generation
Device 100 and water pump 200 for being delivered to the water in water tank 300 in steam generator 100, water pump 200 and steam oven
Control system connects, and the exhaust outlet 12 of steam generator is connected to the cooking cavity of steam oven.
Steam oven provided in this embodiment includes above-mentioned steam generator 100, can reach 100 institute of above-mentioned steam generator
The advantageous effect that can reach.
Specifically, water pump 200 can be exchange water pump 200, exchange water pump 200 is gentle by pipe-line system and water tank 300
Change room connection.
Water out of water tank 300 is extracted into vaporizer by exchanging water pump 200, gasify indoor calandria 22 and microchannel 21
Using integrated die-casting, heat exchange is abundant, and the thermal efficiency is higher, and water is not in direct contact with calandria 22, no dry combustion method risk.Same time control
System processed can carry out intelligent adjusting according to the culinary art curve (change curve that the steam during steaming foods needs) of food materials
The temperature and flow of steam realize the steam of uninterrupted continuous conveying high-quality, realize the perfect culinary art of food materials.
Steam oven provided in this embodiment can temperature without interruption and flow be capable of the steam of linear regulation, vapor (steam) temperature tune
Adjusting range is in 100 DEG C of 260 DEG C of ∽, and flow adjustment range is in 3 ∽ 100ml/min.
Steam oven provided in this embodiment realizes vapor (steam) temperature and steam stream by the way that above-mentioned steam generator 100 is arranged
The linear convergent rate of amount can realize that the continuity of set temperature is adjusted, by 21 structure design of microchannel, realize Quick-gasifying,
Shorten heating time, heating of the saturated vapor of big load for food in liner can be provided with the short time.Simultaneously by gas
Change the control of room wall surface temperature, realize the adjusting of steam flow and temperature, is passed by the way that second temperature is arranged in the exit of steam
Sensor 24 realizes the feedback of vapor (steam) temperature, reversed to correct vapor (steam) temperature and steam flow, and realization is precisely controlled vapor (steam) temperature and steaming
Steam flow amount, reaches linear regulation.Accomplish that big load (high frequency) operation, larger ability supply under heavy load as convertible frequency air-conditioner
It answers the steam of the high mass dryness fraction of high temperature to realize fast reading preheating, shortens cooking time, significantly promote cooking efficiency, it is small under Smaller load
Load (low frequency) is run, and is constantly adjusted vapor (steam) temperature and steam flow in cooking process, is realized continual supply steam, is pasted
Nearly food materials cook curve, and perfection retains food materials nutrition, improves food materials mouthfeel, while realizing cooking food rapidly and efficiently, reaches
Energy-efficient effect.
The setting of the constant design and continuous temperature of 21 wall surface temperature of microchannel is ensureing steam quality and quality simultaneously,
The setting of continuous temperature reaches large-scale step-less adjustment, realizes the demand according to complete machine temperature, supplies the steam of required temperature.
The first temperature sensor 23 is arranged in the rear portion that steam is generated on the length extending direction of microchannel 21, when temperature exists
When in setting range, 22 implementation cycle property break-make of calandria maintains the constant of the temperature of vaporizer wall surface, when temperature is more than setting
When section, the constant of wall surface temperature is ensured by the heating and disconnection of certain time.
Such as：Set temperature T1, wall surface actual temperature t1, in the sections t1≤T1-A, then calandria 22 need first persistently plus
Then heat is finely tuning wall surface temperature, to realize wall surface temperature to ensure that wall surface rises to set temperature by intermittent break-make
It spends constant；
Such as set temperature T1, in T1-A≤t1≤sections T1+B, calandria 22 uses intermittent break-make, maintains wall surface
Temperature it is constant；
Such as set temperature T1, in t1 >=T1+B, then calandria 22 need to be first continuously turned off, and ensure that wall surface temperature drops to setting
Then temperature finely tunes wall surface temperature, to realize that wall surface temperature is constant by intermittent break-make again；
Specifically, by taking wall surface temperature T1 is set in 150 DEG C as an example, if wall surface actual temperature t1 is at 50 DEG C at this time, at temperature
In the sections t1≤T1-A, then the length of calandria 22 is logical is rapidly heated, i.e., calandria 22 works long hours, as wall surface actual temperature t1
At 100 DEG C, when close to T1-A, calandria 22 needs intermittent mode to heat at this time, such as the 2min that is powered, and disconnects 30 seconds.When avoiding long
Between heating, lead to the quick raising of temperature, lead to the unstable of vapor (steam) temperature；If wall surface actual temperature t1 is at 130 DEG C, temperature
Range is in T1-A≤t1≤sections T1+B, then for calandria 22 then by periodic the intermittent heating, such as 30 seconds logical
Electricity, the mode disconnected maintains the stabilization of wall surface temperature within 20 seconds；If wall surface actual temperature t1 is at 180 DEG C, temperature range is in t1
The sections >=T1+B, then 22 long-time heating of calandria, is powered 30 seconds, avoids if powered off 2min in conjunction with mode separated in short-term
It is prolonged to shut down, cause the fluctuation range of wall surface temperature big and vapor (steam) temperature it is unstable.
The accurate temperature control technique of variable-flow adjusts the flow of water pump 200, in wall surface temperature by detecting the outlet temperature of steam
Spend it is constant in the state of, heat exchange efficiency stablize state, according to first law of thermodynamics law of conservation of energy, water flow will determine
The temperature of steam, therefore realize the linear regulation of vapor (steam) temperature and steam flow.
Such as set temperature T2, in T1-C≤t2≤sections T2+D, water pump 200 supplies water using constant flow；
Such as set temperature T2, in the sections t2≤T2-C, temperature is relatively low at this time, shows that water flow is on the high side, need to accordingly reduce water
Flow.Vapor (steam) temperature Real-time Feedback makes control system real-time control water pump 200, to regulating water flow, ensures vapor (steam) temperature
It is constant；
Such as set temperature T2, in t2 >=T2+D, temperature is higher at this time, shows that water flow is less than normal, need to accordingly increase flow, control
System processed adjusts water pump 200 according to the Real-time Feedback of vapor (steam) temperature, increases water supply, ensures the constant of vapor (steam) temperature.
The optimized cooking curve of different food materials is different, also different for the demand of vapor (steam) temperature/quantity of steam, cooks simultaneously
Each stage it is also different for the needs of temperature and quantity of steam, realize that the linear regulation of temperature and flow can meet and cooked
Each stage demand of journey, can meet the needs of different food materials, as accomplishing frequency conversion product.Linear regulation will not simultaneously
There is the significantly abrupt change of temperature and quantity of steam, change curve is smoothly soft so that the food materials mouthfeel and appearance of culinary art are more preferable, complete
The influence of beautiful reservation food materials.
Steam oven in the present embodiment realizes the linear regulation supply of vapor (steam) temperature and flow, can also use simple side
Formula realizes, i.e. multiple spot vapor (steam) temperature and flow-rate adjustment, such as provides the supply of three sections of steam, 120 DEG C/50ml/min, 130 DEG C/
20ml/min, 135 DEG C/10ml/min, the supply of three sections of steam in culinary art curve as looked at 3 points, customization supply, also than existing
Steam oven has larger improvement.
It is arranged by rational wall surface temperature, the preparation of multiple phase temperature steam, the constant knot of wall surface temperature may be implemented
The constant and higher coefficient of heat transfer of interflow amount, realizes the fast vaporizing of steam, while improving the mass dryness fraction and quality of steam.
Steam oven heat exchange efficiency provided in this embodiment is high, and gasification rate is fast, improves steam quality, can reduce steam
Condensed water in stove, while linear regulation vapor (steam) temperature and flow can realize the low quantity of steam under low-power, not only improve section
Can and water consumption be reduced, and advantageously reduces damage of the steam for furniture.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of steam generator, which is characterized in that including being provided with the shell (1) of water inlet (11) and exhaust outlet (12) and setting
The steam generating unit (2) being placed in the shell (1), the steam generating unit (2) include being provided with multiple microchannels
(21) vaporizer and the calandria (22) for being heated for the vaporizer, the calandria (22) connect with the vaporizer heat
It touches；After liquid enters the shell (1) by the water inlet (11), shunted by each microchannel (21), and can be described
Under the action of calandria (22) in each microchannel (21) Quick-gasifying；
The steam that the exhaust outlet (12) is used to generate in the steam generating unit (2) is discharged.
2. steam generator according to claim 1, which is characterized in that the cross-sectional shape of the microchannel (21) is side
Shape.
3. steam generator according to claim 2, which is characterized in that the width of the microchannel (21) be 1mm extremely
5mm is highly 0.5mm to 4mm.
4. steam generator according to claim 1, which is characterized in that the cross-sectional shape of the microchannel (21) is circle
Shape.
5. steam generator according to claim 4, which is characterized in that a diameter of 0.5mm of the microchannel (21) is extremely
5mm。
6. according to claim 1-5 any one of them steam generators, which is characterized in that each microchannel (21) is parallel
And be arranged side by side, each microchannel (21) in the same plane is one group, the vaporizer include be stacked it is more
The group microchannel (21).
7. according to claim 1-5 any one of them steam generators, which is characterized in that further include incrustation scale collecting chamber (3),
The one end of each microchannel (21) far from the water inlet (11) is connected to the incrustation scale collecting chamber (3)；The exhaust outlet
(12) it is set on the side wall of the incrustation scale collecting chamber (3), the gas of each microchannel (21) discharge is received by the incrustation scale
It is discharged by the exhaust outlet (12) after collecting room (3).
8. according to claim 1-5 any one of them steam generators, which is characterized in that be additionally provided in the shell (1)
Header (4), each microchannel (21) is connected to the header (4) close to one end of the water inlet (11), by institute
The liquid for stating water inlet (11) entrance enters the corresponding microchannel (21) by the header (4).
9. according to claim 1-5 any one of them steam generators, which is characterized in that steam generating unit (2) packet
The first temperature sensor (23) and second temperature sensor (24) are included, first temperature sensor (23) is set to described micro- logical
On road (21), and it is located at the rear portion that steam is generated on the microchannel (21) length extending direction, for detecting the microchannel
(21) wall surface temperature；The second temperature sensor (24) is set to the exhaust outlet (12), for detecting the exhaust outlet
(12) temperature for the steam being discharged；
First temperature sensor (23) and the second temperature sensor (24) can connect with the control system of steam oven
It connects.
10. a kind of steam oven, which is characterized in that including water tank (300), claim 1-9 any one of them steam generators
(100) described and for the water in the water tank (300) to be delivered to the water pump (200) in the steam generator (100)
Water pump (200) is connect with the control system of the steam oven, the culinary art of exhaust outlet (12) and steam oven of the steam generator
Chamber is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810597197.XA CN108518665A (en) | 2018-06-11 | 2018-06-11 | Steam generator and steam oven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810597197.XA CN108518665A (en) | 2018-06-11 | 2018-06-11 | Steam generator and steam oven |
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| Publication Number | Publication Date |
|---|---|
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Family
ID=63428259
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| CN201810597197.XA Pending CN108518665A (en) | 2018-06-11 | 2018-06-11 | Steam generator and steam oven |
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| CN109171486A (en) * | 2018-10-17 | 2019-01-11 | 广东美的厨房电器制造有限公司 | The control method and Steam roaster of Steam roaster |
| CN110584465A (en) * | 2019-10-28 | 2019-12-20 | 杭州老板电器股份有限公司 | Steam cooking apparatus |
| CN110731702A (en) * | 2019-10-15 | 2020-01-31 | 华帝股份有限公司 | Control system and method of steam generators and cooking equipment |
| CN111297175A (en) * | 2020-03-03 | 2020-06-19 | 广东美的厨房电器制造有限公司 | Steam cooking equipment, control method and control device for steam cooking equipment and storage medium |
| CN112148047A (en) * | 2020-09-28 | 2020-12-29 | 杭州老板电器股份有限公司 | Water vapor amount control method and kitchen appliance |
| CN112137439A (en) * | 2020-10-23 | 2020-12-29 | 上海纯米电子科技有限公司 | Steam generating device and steam oven |
| CN114158951A (en) * | 2020-09-10 | 2022-03-11 | 广东美的白色家电技术创新中心有限公司 | Steam device |
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