CN207262399U - A kind of steam generator of Novel structure - Google Patents
A kind of steam generator of Novel structure Download PDFInfo
- Publication number
- CN207262399U CN207262399U CN201720934558.6U CN201720934558U CN207262399U CN 207262399 U CN207262399 U CN 207262399U CN 201720934558 U CN201720934558 U CN 201720934558U CN 207262399 U CN207262399 U CN 207262399U
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- Prior art keywords
- electrically heated
- radial direction
- heated rod
- steam generator
- electric heating
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Abstract
The utility model provides a kind of steam generator of new-type heating structure, the steam generator includes babinet, electric heating tube, the electric heating tube and is arranged in babinet, the centrally disposed center electrically heated rod axially of the electric heating tube and along center electrically heated rod to the more radial direction electrically heated rods radially extended, more are set from the outwardly extending triangle heat sink of radial direction electrically heated rod on the radial direction electrically heated rod.The utility model devises the electric heating tube of interior heat radiating fin structure, by the triangle heat sink of Novel structure electric heating tube, adds the disturbance of heating surface (area) (HS and fluid, improves heating effect.
Description
Technical field
It the utility model is related to boiler technology field, more particularly to a kind of steam generator of Novel structure.
Background technology
Steam generator is the mechanical equipment for water being heated as using the thermal energy of fuel or other energy steam.Steam is sent out
Raw device application field is extensive, is widely used in clothing factory, drycleaner's, restaurant, steamed bun shop, dining room, dining room, factories and miness, Bean Products Factory etc.
Place.
Current steam generator uses combustion gas or fuel Heating more, and the efficiency of heating surface is low, and the electricity used at present
Hot steam generator, is to be arranged on using electrothermal tube to the bottom of storage tank mostly, directly heats and produce to the water in water tank
Steam., there is the problem of heating is slow, and the thermal efficiency is low in this electric heating steam generator.
Such as Chinese patent literature CN2071061U discloses a kind of for beauty, the steam generating appliances of health care effect, bag
Include metal electrode board and made of heat resistant plastice housing, go out vapour cover board, interior panelling, flexible handle, metal electrode board is necessary
Power on through power cord, there are internal baffles in housing, it is suitable for reading to have vapour cover board, there is socket groove can be with carrying spigots outside housing bottom
Flexible handle be connected.For another example a kind of improved electric heating steam generator disclosed in Chinese patent literature CN2651594Y, is used
It is placed in generation steam, including body cavity and electric heater, electric heater in body cavity, partition plate is equipped with body cavity will
Cavity is upper and lower to be separated, and upper cavity is vapor cavity, and lower chamber is heating water cavity, and partition plate is equipped with steaming hole；Partition plate has 2-6 layers,
Form transition chamber between partition plate, the steaming hole dislocation arrangement on adjacent partition plate.Electric heater heats the water heated in water cavity, steams
Vapour is entered spare in vapor cavity by partition plate and its transition chamber of formation.Electric-heating steam disclosed in above-mentioned two patent document
Generator, belongs to such product.
Utility model content
The utility model is directed to deficiency of the prior art, there is provided a kind of Novel structure Multifunctional steam generator, at the same time
Hot water and steam are provided, and the steam generator has the function of rapid heating, uniformity of temperature profile, safe and reliable, raising
The efficiency of heating surface.
To achieve the above object, the utility model adopts the following technical solution：
A kind of steam generator of new-type heating structure, the steam generator include babinet, electric heating tube, the electricity and add
Heat pipe is arranged in babinet, the centrally disposed center electrically heated rod axially of the electric heating tube and along center
Electrically heated rod sets more from radial direction electrically heated rod to the more radial direction electrically heated rods radially extended on the radial direction electrically heated rod
Outwardly extending triangle heat sink.
Preferably, radial direction electrically heated rod cross section is rectangle or circle.
Preferably, 0.3-0.5 times of electrically heated rod centered on the heating power of radial direction electrically heated rod in unit length.
Preferably, the radial direction electrically heated rod is shaft, from the center of circle along radially extending to electric heating tube
Inner wall.
Preferably, upper on each radial direction electrically heated rod set multiple triangle heat sinks, multiple triangles dissipate
Backing is similar figures.
Preferably, from the center of electric heating tube to the inside pipe wall of electric heating tube, the length of side or area of triangle heat sink
It is less and less.7. steam generator as claimed in claim 1, it is characterised in that radial direction electrically heated rod both sides distribution triangle
Heat sink, triangle heat sink are symmetrical along the center line of radial direction electrically heated rod.
Preferably, the distance between adjacent triangle heat sink of radial direction electrically heated rod remains unchanged.
Preferably, the triangle heat sink is right angled triangle heat sink, the short side at right angle is formed positioned at radially
On bar, long side stretches out from radial bars；Multiple triangle heat sinks are set on each radial direction electrically heated rod, multiple triangles dissipate
Backing is similar figures；
The opposite acute angle of the short side at the right angle is M, and the length of side of the long side at right angle is L, phase on same radial direction electrically heated rod
The adjacent distance of adjacent triangle heat sink is S, then meets following require：
tan(M)=a*tan(S/L)3-b*(S/L)2+ c* (S/L)-d, wherein tan is trigonometric function, and a, b, c, d are ginsengs
Number；
61.0<a<61.5,
60.0<b<60.5,
21<c<22,
2.2<d<2.3,4<M<35 °,
0.18< S/L <0.38。
Preferably, radial direction electrically heated rod is arranged to 7-9 roots, the angle phase formed between adjacent radial direction electrically heated rod 22
Deng.
The utility model has the following advantages that：
1）The utility model devises the electric heating tube of new-type interior heat radiating fin structure, passes through the three of Novel structure electric heating tube
Angle radiator piece, adds the disturbance of heating surface (area) (HS and fluid, improves heating effect.
2）The utility model devises a kind of steam generator of Novel structure, by such a structure, can pass through one
Device realizes steam and hot water double action, simple in structure, and the efficiency of heating surface is high.
3）The utility model by set the perforate of electric heating tube bottom along the distribution density in short transverse, area with
And the setting of the spacing change of more rows of openings, the efficiency of heating surface is further increased, improves the security performance of steam generator.
4) the utility model devises new-type vertical tubular electric heating tube, and electric heating tube top directly connects steam and goes out
Mouthful, by such a mechanism, it can further improve the efficiency of heating surface.
5）The utility model devises change of the electrical heating efficiency along short transverse, can further improve the peace of device
Full performance and heating properties.
6）The utility model passes through numerical simulation and many experiments, it is determined that the optimal relation of interior heat sink, further
Heating effect is improved, also provides an optimal reference frame for being related to for electric heating tube of such a structure.
Brief description of the drawings：
Fig. 1 is the steam generator preferred structure schematic diagram that the utility model produces hot water and steam.
Fig. 2 is the steam generator preferred structure schematic diagram for only producing steam of the utility model.
Fig. 3 is electric heating tube Structure of cross section schematic diagram.
Fig. 4 is heat sink sizes schematic diagram in electric heating tube.
Fig. 5 is electric heating tube longitudinal direction section schematic diagram.
In figure：1- babinets；2- electric heating tubes；3- cold water inlets；4- hot water outlets；5- steam (vapor) outlets；6- exhaust outlets；
21- outer tubes；22- radial direction electrically heated rods；23- triangle heat sinks；24- centers electrically heated rod；25- perforates
Embodiment
Fig. 1-5 illustrates a kind of steam generator.As shown in Figure 1, the steam generator includes babinet 1, electric heating tube
2nd, cold water inlet 3, hot water outlet 4 and steam (vapor) outlet 5, the cold water inlet 3 are arranged on the lower part of babinet 1, and the hot water goes out 4 mouthfuls
Positioned at the top of 1 body of case.The electric heating tube 2 is arranged in babinet, and the electric heating tube 2 is set for vertical direction（Perpendicular to
Water tank bottom plane is set）, electric heating tube 2 includes outer tube 21 and the electric heater that is arranged in outer tube 21, the electric heating tube 2
Lower part sets intake tunnel, ensures the water of babinet 1 and can be heated into electric heating tube 2, and the top connection of electric heating tube 2 is steamed
Vapor outlet 5.
Preferably, the outer tube of 5 pipeline of steam (vapor) outlet and electric heating tube 2 is to be tightly connected.
Preferably, the outside diameter of 5 pipeline of steam (vapor) outlet is less than the outside diameter of the outer tube of electric heating tube 2.It can so ensure to steam
The vapour velocity of discharge.
Cold water enters babinet by cold water inlet 3.When being worked, electric heating tube 2 is arranged in babinet 1, in babinet 1
Water enters electric heating tube 2 by the perforate 25 on outer tube 21, is then heated in electric heating tube 2, the steaming produced after heating
Vapour is discharged by steam (vapor) outlet 5.Meanwhile electric heating tube is while steam is produced, while the water in heating compartment, produced after heating
Raw hot water can be utilized by hot water outlet.
By above-mentioned structure setting, steam and hot water can be produced at the same time so that steam generator has multiple functions,
Its scope utilized has been expanded, and the steam produced is directly discharged by the steam (vapor) outlet being connected with electric heating tube, because being
Water outside electric heating tube is heated by outer tube 21, thus exterior water will not explosive evaporation, also ensure that the safety of heating
Property.
The utility model is set by electric heating tube 2 for vertical direction, and in the vertical direction can be caused to heat water so that
Water continuous heating in uphill process, the electric heating tube set relative to horizontal direction, further increases the efficiency of heating surface.
As an improvement, hot water outlet 4 can be removed, such as shown in Fig. 2, only using steam generator as one
Produce the simple function evaporator of steam.
Preferably, 1 top of babinet sets exhaust outlet 6.By setting exhaust outlet 6,1 internal pressure of babinet is avoided
It is excessive, it is ensured that safety.
Preferably, the cross section of the babinet is circular.
Preferably, the cross section of the electric heating tube 2 is circular.
Preferably, the electric heating tube 2 is arranged on the centre position of babinet.Set by doing so, ensure hot water heating
Uniformity.
Preferably, the outside diameter of the outer tube 21 of the electric heating tube 2 is 0.3-0.45 times of the internal diameter of babinet 1.Further
Preferably 0.35-0.40 times.
Preferably, intake tunnel is strip slot.
Preferably, intake tunnel is perforate 25.As shown in Figure 5.It should be noted that be only schematic diagram in Fig. 5, though
1 or a rows of openings 25 of setting are only shown in right Fig. 5 between adjacent electrically heated rod 22, is actually not only limited to
In one either a row can be set on the upper-lower position between adjacent electrically heated rod 22 it is multiple or multiple rows of.
Preferably, 25 shape of perforate can be circular or square.
Preferably, the perforate 25 is arranged on less than the 50% of 1 water level of babinet.Set by doing so, can ensure water energy
It is enough to be timely internally heated into electric heating tube 2, while also avoiding perforate 25 from setting excessive causes steam excessive from perforate 25
Go out, avoid pressure in whole babinet excessive, while also avoided the water of eminence from entering in electric heating tube, the steam for causing to produce is taken
The moisture of band is too many.
Preferably, along short transverse（That is direction from the bottom up, appear below along short transverse, if do not had
Specified otherwise, all referring to direction from the bottom up）, the perforate 25 is arranged to multiple rows of.
It is multiple rows of by setting, it is ensured that different height and position water inlets, avoids an independent position from intaking, cause to heat
It is uneven, while the water avoided enter into is evaporated, and causes to dry up in heating tube.
It is preferably, less and less along short transverse, the distribution density of the perforate 25.The density that perforate 25 is distributed is got over
It is next smaller, that is, mean the fewer and fewer of perforate distribution, the area of perforate is also just less and less.
By substantial amounts of numerical simulation and its experimental studies have found that, by setting perforate distribution density less and less, mainly
The reason is that ensureing that most of water is heated in lower part, constantly there is water to enter electric heating tube 2 in water becomes steam uphill process, hold
Continuous heating.If lower part water inlet is few, lower part water fast vaporizing may be caused, causes in electric heating tube 2 that pressure is excessive, is caused
The water in portion is also because pressure considerations cannot be introduced into electric heating tube.Reduce the dry of electric heating tube, while improve the efficiency of heating surface.
Further preferably, along short transverse, the amplitude that the distribution density of the perforate 25 is less and less constantly increases.
By substantial amounts of experiment and numerical simulation, by the change of above-mentioned perforate distribution density, can further improve
The efficiency of heating surface, improves the output efficiency of steam, while can reduce dry in electric heating tube.
It is preferably, less and less along short transverse, the area of single perforate 25.Further preferably, along height side
To the amplitude that the area of single perforate 25 is less and less constantly increases.Specific reason referring to 25 distribution density of perforate change.
It is preferably, less and less along the sum of short transverse, the area per rows of openings 25.Preferably, along
The sum of short transverse, the area per rows of openings 25 less and less amplitude is continuously increased.Specific reason is divided referring to perforate 25
The change of cloth density.
Preferably, along short transverse, it is described per rows of openings 25 between spacing it is increasing.Preferably, along
Short transverse, the amplitude increasing per the spacing between rows of openings 25 are continuously increased.Specific reason is divided referring to perforate 25
The change of cloth density.
Preferably, the centrally disposed center electrically heated rod 24 axially of electric heating tube 2.
Preferably, along short transverse, the heating power of the unit length of electrically heated rod 24 is constantly reduced.By setting
The heating power for putting electrically heated rod 24 is constantly reduced, and ensures that the fluid of lower part quickly heats, then hot fluid passes through naturally right
Top is flowed to, the fluid outside the fluid on top and the electric heating tube 2 of its underpart rapidly enters, and can further improve heating
Efficiency.By substantial amounts of experiment and numerical simulation, by the change of above-mentioned electric heater for heating power, can further improve
10% or so the efficiency of heating surface, saves heating time.
Preferably, along short transverse, the amplitude of the continuous reduction of heating power of the unit length of electrically heated rod 24
Constantly increase.
, can by the change of above-mentioned 24 heating power amplitude of electrically heated rod by substantial amounts of experiment and numerical simulation
5% efficiency of heating surface is further improved, further saves heating time.
Preferably, electrically heated rod 24 divides for multistage, along short transverse, the heating power of the unit length of different sections is not
Together.Wherein constantly reduced along short transverse, the heating power of the unit length of different sections.Further preferably, the width of reduction
Degree constantly increase.
Preferably, every section of length is identical.
Preferably, the heating power of every section of unit length is identical.
Specific reason is as above.
It is segmented by setting, can be with further such that being simple to manufacture conveniently.
The electric heating tube 2 is along center electrically heated rod 24 to the more radial direction electrically heated rods 22 radially extended, the footpath
More are set on to electrically heated rod 22 from the outwardly extending triangle heat sink 23 of radial direction electrically heated rod 22.
The utility model is by setting radial direction electrically heated rod 22 and along 22 outwardly extending triangle of radial direction electrically heated rod
Shape heat sink 23, can further improve the efficiency of heating surface, while increase heating surface (area) (HS, improve heating effect, and because set
Triangle heat sink, passes through the triangular tip of the similar acicular texture of triangle heat sink so that the vapor bubbles of generation exist
It in uphill process, can further increase flow-disturbing, cut bubble so that air pocket turns to the bubble of smaller, further promotes vapour
The fusion of liquid, promotes the heat exchange of vapour-liquid so that fluid is sufficiently mixed, improves heating effect.
Further preferably, radial direction electrically heated rod cross section is rectangle, is preferably square.
Further preferably, radial direction electrically heated rod cross section is circle.
Preferably, 0.3-0.5 times of electrically heated rod centered on the heating power of radial direction electrically heated rod in unit length,
Preferably 0.4 times.
Preferably, the radial direction electrically heated rod 22 is shaft, from the center of circle along radially extending to electrical heating
The inner wall of pipe 21.
Preferably, multiple triangle heat sinks 23, multiple triangles are set on 22 on each radial direction electrically heated rod
Shape heat sink 23 is similar figures.Three interior angles in correspondence with each other of i.e. different triangle heat sinks are identical.
Preferably, from the center of electric heating tube 21 to the inside pipe wall of electric heating tube 21, the length of side of triangle heat sink 23
Or area is less and less.
Preferably, 22 both sides distribution triangle heat sink 23 of radial direction electrically heated rod, triangle heat sink 23 is along radially
The center line of electrically heated rod 22 is symmetrical.
Preferably, the distance between adjacent triangle heat sink 23 of radial direction electrically heated rod 22 remains unchanged.
Preferably, from the center of electric heating tube 21 to radial direction, the heat dissipation of adjacent 22 triangle of radial direction electrically heated rod
Spacing between piece 23 constantly increases.
Constantly increased by the spacing between adjacent 22 triangle heat sink 23 of radial direction electrically heated rod, can caused outer
Fluid amount of flow big local fluid circulation space in portion's is big, can further reduce flow resistance, heating effect is kept not substantially
Become.
Preferably, the triangle heat sink 23 is right angled triangle heat sink, the short side for forming right angle is located at footpath
To on electrically heated rod, long side stretches out from radial direction electrically heated rod.
Preferably, the radial direction electrically heated rod 22 is round bar, its a diameter of 0.6-1.2mm, is preferably 0.8mm.
Preferably, triangle heat sink stretches out from the central plane of round bar.The triangle heat sink is tablet
Structure.The slab construction is perpendicular to center electrically heated rod 24, and slab construction extended surface passes through the center line of round bar.
Learnt by numerical analysis and experiment, adjacent triangle heat sink spacing cannot be too big, then can greatly very much
Cause heat sink heat transfer area too small, augmentation of heat transfer effect is bad, but spacing can not be too small, and spacing is too small, causes in pipe
Fluid circulation space is too small, causes the resistance that steam flows in pipe 2 too big, similarly, the apex angle of triangle heat sink cannot be too
Greatly, flow resistance can be also influenced very much greatly, and greatly flow-disturbing effect can be caused bad very much, but can not be too small, too
Heating surface (area) (HS is too small if small, can also influence heating effect.Therefore the utility model is from two side of heating effect and flow resistance
Face accounts for, therefore the utility model preferentially meeting normal flow resistance by largely testing（Always pressure-bearing is
Below 8Mpa）In the case of so that being optimal of heating effect, has arranged the optimal relation of parameters.
The opposite acute angle of the short side at the right angle is M, and the length of side of the long side at right angle is L, on same radial direction electrically heated rod 22
The adjacent distance of adjacent triangle heat sink is S, then meets following require：
tan(M)=a*tan(S/L)3-b*(S/L)2+ c* (S/L)-d, wherein tan is trigonometric function, and a, b, c, d are ginsengs
Number；
61.0<a<61.5, preferably a=61.295,
60.0<b<60.5, preferably b=60.267,
21<c<22, preferably c=21.412,
2.2<d<2.3, preferably d=2.2734
4<M<35 °, preferably 8<M<25°
0.18< S/L <0.38,0.25R<L<0.32 R。
R is the distance at the midpoint on the side at the place for being located at axial cooling fin 22 from 2 center of circle of electric heating tube to right angled triangle.
Wherein adjacent distance S be the place for being located at axial cooling fin 22 with adjacent triangle heat sink side between
Away from；I.e. triangle heat sink is located at the side rear end at the place of axial cooling fin 22 and rear triangular is located at axial cooling fin 22
The distance between the side front end at place.Referring specifically to the mark of Fig. 4.
Preferably, radial direction electrically heated rod 22 is arranged to 7-9 roots, the angle formed between adjacent radial direction electrically heated rod 22
It is equal.More preferably 8.
The length of side L of the long side at right angle chooses being averaged for the length of side of the long side at two right angles of adjacent triangle heat sink
Value.
Further preferably, the internal diameter of electric heating tube is 25-40mm.
Preferably, electric heating tube is straight tube.
Preferably, the heating power of steam generator is 2000-4000W, it is preferably 2500-3500W.
Preferably, electrically heated rod 24,22 is resistance heater, grown by setting the diameter of resistance to change unit
The change of the heating power of degree.
It is preferably, increasing along the distance between short transverse, neighbouring radial direction electrically heated rod 22.Into one
Step is preferred, and along short transverse, the increasing amplitude of the distance between adjacent radial direction electrically heated rod 22 constantly increases.
Preferably, along short transverse, the heating power of the unit length of different radial direction electrically heated rods 22 is increasingly
It is small.Further preferably, the less and less amplitude of different 22 unit length heating powers of radial direction electrically heated rod constantly increases.
By set the heating power of electrically heated rod 22 constantly to reduce in the height direction or the distance between it is more next
It is bigger, ensure that the fluid of lower part quickly heats, then hot fluid has arrived top, the fluid on top and its underpart by free convection
Electric heating tube 2 outside fluid rapidly enter, the efficiency of heating surface can be further improved.By substantial amounts of experiment and Numerical-Mode
Intend, by the change of above-mentioned electric heater for heating power, the 8-10% efficiencies of heating surface can be further improved, when saving heating
Between.
Although the utility model is disclosed as above with preferred embodiment, the utility model is not limited to this.Any
Field technology personnel, without departing from the spirit and scope of the utility model, can make various changes or modifications, therefore this practicality
New protection domain should be subject to claim limited range.
Claims (10)
1. a kind of steam generator of new-type heating structure, the steam generator includes babinet, electric heating tube, the electrical heating
Pipe is arranged in babinet, the centrally disposed center electrically heated rod axially of the electric heating tube and along middle electrocardio
Heating rod to the more radial direction electrically heated rods radially extended, set on the radial direction electrically heated rod more from radial direction electrically heated rod to
The triangle heat sink of outer extension.
2. steam generator as claimed in claim 1, it is characterised in that radial direction electrically heated rod cross section is rectangle or circle.
3. steam generator as claimed in claim 1, it is characterised in that the heating work(of the radial direction electrically heated rod in unit length
0.3-0.5 times of electrically heated rod centered on rate.
4. steam generator as claimed in claim 1, it is characterised in that the radial direction electrically heated rod is shaft, from circle
The heart is along the inner wall for radially extending to electric heating tube.
5. steam generator as claimed in claim 1, it is characterised in that upper on each radial direction electrically heated rod that multiple triangles are set
Shape heat sink, multiple triangle heat sinks are similar figures.
6. steam generator as claimed in claim 1, it is characterised in that in from the center of electric heating tube to the pipe of electric heating tube
Wall, the length of side or area of triangle heat sink are less and less.
7. steam generator as claimed in claim 1, it is characterised in that radial direction electrically heated rod both sides distribution triangle radiates
Piece, triangle heat sink are symmetrical along the center line of radial direction electrically heated rod.
8. steam generator as claimed in claim 7, it is characterised in that the triangle heat sink of adjacent radial direction electrically heated rod
The distance between remain unchanged.
9. steam generator as claimed in claim 1, it is characterised in that the triangle heat sink is that right angled triangle dissipates
Backing, the short side for forming right angle are located in radial bars, and long side stretches out from radial bars；Set on each radial direction electrically heated rod more
A triangle heat sink, multiple triangle heat sinks are similar figures；
The opposite acute angle of the short side at the right angle is M, and the length of side of the long side at right angle is L, adjacent on same radial direction electrically heated rod
The adjacent distance of triangle heat sink is S, then meets following require：
tan(M)=a*tan(S/L)3-b*(S/L)2+ c* (S/L)-d, wherein tan is trigonometric function, and a, b, c, d are parameters；
61.0<a<61.5,
60.0<b<60.5,
21<c<22,
2.2<d<2.3,4<M<35 °,
0.18< S/L <0.38。
10. steam generator as claimed in claim 9, it is characterised in that radial direction electrically heated rod is arranged to 7-9 roots, adjacent
The angle formed between radial direction electrically heated rod is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720934558.6U CN207262399U (en) | 2017-07-31 | 2017-07-31 | A kind of steam generator of Novel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720934558.6U CN207262399U (en) | 2017-07-31 | 2017-07-31 | A kind of steam generator of Novel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207262399U true CN207262399U (en) | 2018-04-20 |
Family
ID=61927505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720934558.6U Expired - Fee Related CN207262399U (en) | 2017-07-31 | 2017-07-31 | A kind of steam generator of Novel structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN207262399U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940428A (en) * | 2017-07-31 | 2018-04-20 | 山东交通学院 | A kind of steam generator of Novel structure |
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2017
- 2017-07-31 CN CN201720934558.6U patent/CN207262399U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940428A (en) * | 2017-07-31 | 2018-04-20 | 山东交通学院 | A kind of steam generator of Novel structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180420 Termination date: 20190731 |