CN206915989U - A kind of reusing of energy source environment-protection boiler - Google Patents

A kind of reusing of energy source environment-protection boiler Download PDF

Info

Publication number
CN206915989U
CN206915989U CN201720683679.8U CN201720683679U CN206915989U CN 206915989 U CN206915989 U CN 206915989U CN 201720683679 U CN201720683679 U CN 201720683679U CN 206915989 U CN206915989 U CN 206915989U
Authority
CN
China
Prior art keywords
glass
glass microballoon
room
insulation layer
heat
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.)
Active
Application number
CN201720683679.8U
Other languages
Chinese (zh)
Inventor
黄尚勇
史常年
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN201720683679.8U priority Critical patent/CN206915989U/en
Application granted granted Critical
Publication of CN206915989U publication Critical patent/CN206915989U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The utility model discloses a kind of reusing of energy source environment-protection boiler, the environment-protection boiler bottom is provided with the plant bottom case of circle, the glass microballoon product burning production room of cylindrical shape is connected with the plant bottom case, lower end side in glass microballoon product burning production room is provided with inlet valve, glass microballoon product burning production chamber interior walls on the top of inlet valve are provided with multiple fuel gas buring mouths, the top of the fuel gas buring mouth is provided with glass microballoon raw material import, this product energy-conserving and environment-protective steam recycles, such as utilize steam to warm oneself, either going to produce other using steam needs steam the product that produces.A kind of novel device, it is that a kind of original two kinds of equipment for only producing product design together, the energy can be made to obtain filling part utilization, two clock equipment are complementary, reduce energy loss, reduce production cost.

Description

A kind of reusing of energy source environment-protection boiler
Technical field
The utility model belongs to boiler field of mechanical technique, and in particular to a kind of reusing of energy source environment-protection boiler and its should With.
Background technology
Boiler is a kind of energy conversion, and the energy inputted to boiler has chemical energy, electric energy in fuel, boiler output Steam, high-temperature water or organic heat carrier with certain heat energy, the original meaning of pot refer to the water container heated on fire, and stove refers to burning The place of fuel, boiler include pot and stove two large divisions, and caused hot water or steam can directly be industrial production and people in boiler Heat energy needed for people's livelihood work offer, mechanical energy can be also converted to by Steam Power Equipment, or again be turned mechanical energy by generator It is changed to electric energy.The boiler for providing hot water is referred to as hot-water boiler, is mainly used in living, also there is a small amount of application in industrial production, produces The boiler of steam is referred to as steam boiler, is often simply called boiler, is used for thermal power station, ship, locomotive and industrial and mining enterprises, in cold Winter, boiler heating are a kind of important means, and existing boiler is typically all burning coal, with the reduction of coal resources, The use cost of boiler gradually rises, and improving the utilization rate of coal fuel turns into the key of existing boiler plant technology, however, existing It is the utilization rate for only increasing coal fuel by abundant burning coal to have boiler, and then is increased economic efficiency, but it is saved It can have little effect, in addition, when boiler is burnt, carbon monoxide caused by coal fuel combustion and sulfur dioxide can be with Cigarette is drained into air from smoke exhaust pipe together, deleterious effect is produced to air, therefore, a kind of it is proposed that energy-conserving and environment-protective pot Stove.
Steaming food or winter heating or industrial often to use arrive high-temperature steam in daily life.Existing steam generation Device, flame caused by the combustion gas lighted enter in steam generator in another road direction, and heat energy is passed to dividing plate, dividing plate again Heat energy passes to the water in steam generator, is gradually repeatedly seethed with excitement after water is heated and produces vapor, then these saturation waters are steamed Conductance is gone out steaming food or other purposes.Following shortcomings be present in existing steam generator:1st, due to the flue gas temperature finally excluded Degree is higher, can take away substantial amounts of heat energy, therefore utilization efficiency of heat energy is low;2nd, because utilization efficiency of heat energy is low, make steam sometimes warm Degree does not reach 100 degree of requirement, therefore the speed for producing steam is slower, not square for many occasions for needing instantaneously producing steam Just.
In the industrial production of glass microballoon, high-temp waste gas caused by the sintering boiler of glass microballoon used, usually directly Scatter and disappear and emit, heat caused by high-temp waste gas can not pass through secondary use again.Produced by during how glass microballoon is produced Heat be able to secondary use, be that current boiler technology field needs to solve the problems, such as, while boiler material used is proposed Higher requirement.
Utility model content
For deficiency of the prior art, the purpose of this utility model be to provide a kind of reusing of energy source environment-protection boiler and It is applied.
To achieve these goals, the utility model adopts the technical scheme that:
A kind of reusing of energy source environment-protection boiler, the environment-protection boiler bottom are provided with the plant bottom case of circle(1), it is described Plant bottom case(1)On be connected with cylindrical shape glass microballoon product burning production room(2), burn and give birth in the glass microballoon product Lechodochium(2)Lower end side be provided with for the inlet valve for combustion air oxygenation and as inspection hole(3), in the glass Microballon product burning production room(2)Outside be provided with water tank(16), in inlet valve(3)Top glass microballoon product burning Produce room(2)Inwall is provided with multiple fuel gas buring mouths(4), the fuel gas buring mouth(4)Top be provided with glass microballoon original Material inlet(5), the glass microballoon product burning production room(2)Upper end be connected with cylindrical shape glass-beam forming room (6), the glass-beam forming room(6)Outside be provided with heat-insulation layer(7), the heat-insulation layer(7)With the glass microballoon into Type room(6)Between be provided with water tank vaporium(8).
The glass-beam forming room(6)Cylinder on be provided with a circle sparge pipe(9), the sparge pipe(9)One end For filler(10), the filler(10)Stretch out heat-insulation layer(7)Outside top.
In heat-insulation layer(7)Top be additionally provided with relief valve connection(11)And steam (vapor) outlet(12), air inducing pipeline(13)'s One end connection glass-beam forming room(6)Cylinder upper end, or air inducing pipeline(13)Forming room is located at after introducing water tank(6) Heat-insulation layer is stretched out on the outside of other positions(7);Air inducing pipeline(13)The other end connection heat-insulation layer(7)Air-introduced machine is connect under outer (14), the glass-beam forming room(6)Lower end be symmetrically arranged with multiple glass microballoon product outlets(15), the glass is micro- Pearl product outlet(15)Stretch out heat-insulation layer(7)Outside.
The glass microballoon burning production room(2)Material be ferrous metal composite, the ferrous metal composite table Face is coated with ceramic antioxidant coating, wherein, the material component and weight of the ceramic antioxidant coating are titanium dioxide Silicon 20-30 parts, boron oxide 1-3 parts, sodium oxide molybdena 0-2 parts, zirconium oxide 3-5 parts, magnesia 0-2 parts, carborundum 5-10 parts, carbon fiber 1-3 parts, glass fibre 2-4 parts, titanium oxide 3-8 parts, boron nitride 5-8 parts, phenolic resin 30-40 parts, the anti-oxidant painting of ceramics The thickness of layer is 1-3 microns.
The glass-beam forming room(6)Material be ferrous metal composite, the surface of the ferrous metal composite Coated with ceramic antioxidant coating, wherein the material component of the ceramic antioxidant coating and weight are silica 10-15 parts, boron oxide 1-3 parts, sodium oxide molybdena 0-2 parts, zirconium oxide 3-5 parts, magnesia 0-2 parts, silicon nitride 5-10 parts, glass fibre 2-4 parts, tungsten carbide 5-8 parts, phenolic resin 20-30 parts, the thickness of the ceramic antioxidant coating is 2-4 microns, the iron gold Category composite is the composite being made up of iron and other metals, and is added in the ferrous metal composite described compound Material gross weight 1-5% carbon fiber.
The heat-insulation layer(7)Material be silicon nitride/silicon carbide composite, the silicon nitride/silicon carbide composite Surface be coated with ceramic antioxidant coating, wherein, the material component and weight proportion of the ceramic antioxidant coating are dioxy SiClx 10-15 parts, boron nitride 1-3 parts, zirconium oxide 3-5 parts, magnesia 0-2 parts, carborundum 5-10 parts, glass fibre 2-4 parts, 3- 8 parts, silicon nitride 5-8 parts, phenolic resin 20-30 parts.
When glass microballoon is manufactured in production, the temperature of combustion chamber seals outer water tank, furnace wall at 600 degree to 1300 degree Steam is made in lost heat energy, then steam is used for industrial production or warming, so reduces energy waste loss, and obtain The energy sufficiently effective utilization.
The technological process of the application is as follows:The raw material of glass microballoon enter glass microballoon by raw material import and produced Product burning production room, combustion gas are supplied to glass microballoon product burning production chamber interior by port, and glass microballoon is micro- in glass Pearl forming room is molded, and forms final product and is discharged through products export, caused waste gas is in the presence of air-introduced machine, through air inducing Pipeline is discharged, due to producing substantial amounts of heat in glass-beam forming room, by the water of filler input, in the work of sparge pipe Under, it is sprayed onto on the outer wall of glass-beam forming room, substantial amounts of vapor is formed in water tank steam chamber, vapor passes through steaming Vapor outlet is discharged, and for daily use, when the pressure in water tank steam chamber is excessive, touches safe threshold switch, safety valve Interface is opened, to discharge excessive gas.
The glass microballoon forms particle after melting in combustion chamber, into forming room after fall into discharging opening, Water in Water Tank burns Open rear steam and enter vaporium, steam can discharge, and steam discord glass microballoon occurs together;There are blower fan, microballon under exhaust outlet By wind gravitation to forming room, microballon falls back to discharging opening after bumping against shaping locular wall.
Water tank and vaporium be it is identical connect together, combustion chamber water tank and forming room's water tank are also identical company.Combustion Burn bucket wall and the forming room's bucket wall bottom end seal welding of room.
The effect of air inlet of combustion chamber is to provide air oxygen required during combustion chambers burn, can be used as again and check equipment Peep hole when internal.Port is along combustion chamber bucket wall multiple air inlet pipe of one week, can so make during burning in bucket to have uniformly Flame.Glass microballoon material inlet is that have multiple imports in one week outside heat-insulation layer bucket, and combustion is entered back into by heat-insulation layer water tank Room is burnt, quantitative and even flows into during production, is drawn onto forming room by the air inducing power of wind channel again through combustion chambers burn heating fusing, then Fall into products export.
Water tank and water tank vaporium are an entirety, and discharging opening is to pass through water tank with a copper pipe, is passed into glass microballoon Forming room.
Beneficial effect
Because steam is repeatedly to expand so that the energy more than 80% can be saved, can be with using water wisely 60%.It is described Boiler uses compound antioxidant coating, improves the service life of boiler, by test, running at full capacity, not blowing out, boiler Service life can reach 5 years.At 1300 DEG C, antioxygen rate improves 60%.
Brief description of the drawings
The structural representation of Fig. 1 reusing of energy source environment-protection boilers;
The structural representation of air-introduced machine and air-vent is connect under Fig. 2 reusing of energy source environment-protection boilers.
Wherein, 1 is plant bottom case;2 be glass microballoon product burning production room;3 areInlet valve;4 be fuel gas buring mouth;5 It is glass microballoon raw material import;6 be glass-beam forming room;7 be heat-insulation layer;8 be water tank vaporium;9 be sparge pipe;10 are Filler;11 be relief valve connection;12 be steam (vapor) outlet;13 be air inducing pipeline;14 be air-introduced machine;15 be that glass microballoon finished product goes out Mouthful;16 be water tank.
Embodiment
Embodiment 1
A kind of reusing of energy source environment-protection boiler, the environment-protection boiler bottom are provided with the plant bottom case of circle(1), it is described Plant bottom case(1)On be connected with cylindrical shape glass microballoon product burning production room(2), burn and give birth in the glass microballoon product Lechodochium(2)Lower end side be provided with for the inlet valve for combustion air oxygenation and as inspection hole(3), in the glass Microballon product burning production room(2)Outside be provided with water tank(16), in inlet valve(3)Top glass microballoon product burning Produce room(2)Inwall is provided with multiple fuel gas buring mouths(4), the fuel gas buring mouth(4)Top be provided with glass microballoon original Material inlet(5), the glass microballoon product burning production room(2)Upper end be connected with cylindrical shape glass-beam forming room (6), the glass-beam forming room(6)Outside be provided with heat-insulation layer(7), the heat-insulation layer(7)With the glass microballoon into Type room(6)Between be provided with water tank vaporium(8).
The glass-beam forming room(6)Cylinder on be provided with a circle sparge pipe(9), the sparge pipe(9)One end For filler(10), the filler(10)Stretch out heat-insulation layer(7)Outside top.
In heat-insulation layer(7)Top be additionally provided with relief valve connection(11)And steam (vapor) outlet(12), air inducing pipeline(13)'s One end connection glass-beam forming room(6)Cylinder upper end, or air inducing pipeline(13)Forming room is located at after introducing water tank(6) Heat-insulation layer is stretched out on the outside of other positions(7);Air inducing pipeline(13)The other end connection heat-insulation layer(7)Air-introduced machine is connect under outer (14), the glass-beam forming room(6)Lower end be symmetrically arranged with multiple glass microballoon product outlets(15), the glass is micro- Pearl product outlet(15)Stretch out heat-insulation layer(7)Outside.
The glass microballoon burning production room(2)Material be ferrous metal composite, the ferrous metal composite table Face is coated with ceramic antioxidant coating, wherein, the material component and weight of the ceramic antioxidant coating are titanium dioxide 20 parts of silicon, 1 part of boron oxide, 3 parts of zirconium oxide, 1 part of magnesia, 5 parts of carborundum, 1 part of carbon fiber, 2 parts of glass fibre, titanium oxide 3 Part, 5 parts of boron nitride, 30 parts of phenolic resin, the thickness of the ceramic antioxidant coating is 1 micron.
The glass-beam forming room(6)Material be ferrous metal composite, the surface of the ferrous metal composite Coated with ceramic antioxidant coating, wherein the material component of the ceramic antioxidant coating and weight are silica 10 Part, 1 part of boron oxide, 1 part of sodium oxide molybdena, 3 parts of zirconium oxide, 1 part of magnesia, 5 parts of silicon nitride, 2 parts of glass fibre, 5 parts of tungsten carbide, phenol 20 parts of urea formaldehyde, the thickness of the ceramic antioxidant coating is 2 microns, and the ferrous metal composite is by iron and other metals The composite of composition, and the carbon fiber of the composite gross weight 1% is added in the ferrous metal composite.
The heat-insulation layer(7)Material be silicon nitride/silicon carbide composite, the silicon nitride/silicon carbide composite Surface be coated with ceramic antioxidant coating, wherein, the material component and weight proportion of the ceramic antioxidant coating are dioxy 10 parts of SiClx, 1 part of boron nitride, 3 parts of zirconium oxide, 1 part of magnesia, 5 parts of carborundum, 2 parts of glass fibre, 3 parts, 5 parts of silicon nitride, phenol 20 parts of urea formaldehyde.
Embodiment 2
A kind of reusing of energy source environment-protection boiler, the environment-protection boiler bottom are provided with the plant bottom case of circle(1), it is described Plant bottom case(1)On be connected with cylindrical shape glass microballoon product burning production room(2), burn and give birth in the glass microballoon product Lechodochium(2)Lower end side be provided with for the inlet valve for combustion air oxygenation and as inspection hole(3), in the glass Microballon product burning production room(2)Outside be provided with water tank(16), in inlet valve(3)Top glass microballoon product burning Produce room(2)Inwall is provided with multiple fuel gas buring mouths(4), the fuel gas buring mouth(4)Top be provided with glass microballoon original Material inlet(5), the glass microballoon product burning production room(2)Upper end be connected with cylindrical shape glass-beam forming room (6), the glass-beam forming room(6)Outside be provided with heat-insulation layer(7), the heat-insulation layer(7)With the glass microballoon into Type room(6)Between be provided with water tank vaporium(8).
The glass-beam forming room(6)Cylinder on be provided with a circle sparge pipe(9), the sparge pipe(9)One end For filler(10), the filler(10)Stretch out heat-insulation layer(7)Outside top.
In heat-insulation layer(7)Top be additionally provided with relief valve connection(11)And steam (vapor) outlet(12), air inducing pipeline(13)'s One end connection glass-beam forming room(6)Cylinder upper end, or air inducing pipeline(13)Forming room is located at after introducing water tank(6) Heat-insulation layer is stretched out on the outside of other positions(7);Air inducing pipeline(13)The other end connection heat-insulation layer(7)Air-introduced machine is connect under outer (14), the glass-beam forming room(6)Lower end be symmetrically arranged with multiple glass microballoon product outlets(15), the glass is micro- Pearl product outlet(15)Stretch out heat-insulation layer(7)Outside.
The glass microballoon burning production room(2)Material be ferrous metal composite, the ferrous metal composite table Face is coated with ceramic antioxidant coating, wherein, the material component and weight of the ceramic antioxidant coating are titanium dioxide 30 parts of silicon, 3 parts of boron oxide, 2 parts of sodium oxide molybdena, 5 parts of zirconium oxide, 2 parts of magnesia, 10 parts of carborundum, 3 parts of carbon fiber, glass fibre 4 Part, 8 parts of titanium oxide, 8 parts of boron nitride, 40 parts of phenolic resin, the thickness of the ceramic antioxidant coating is 3 microns.
The glass-beam forming room(6)Material be ferrous metal composite, the surface of the ferrous metal composite Coated with ceramic antioxidant coating, wherein the material component of the ceramic antioxidant coating and weight are silica 15 Part, 3 parts of boron oxide, 2 parts of sodium oxide molybdena, 5 parts of zirconium oxide, 2 parts of magnesia, 10 parts of silicon nitride, 4 parts of glass fibre, 8 parts of tungsten carbide, 30 parts of phenolic resin, the thickness of the ceramic antioxidant coating is 4 microns, and the ferrous metal composite is by iron and other gold Belong to the composite of composition, and the carbon fiber of the composite gross weight 1-5% is added in the ferrous metal composite.
The heat-insulation layer(7)Material be silicon nitride/silicon carbide composite, the silicon nitride/silicon carbide composite Surface be coated with ceramic antioxidant coating, wherein, the material component and weight proportion of the ceramic antioxidant coating are dioxy 15 parts of SiClx, 3 parts of boron nitride, 5 parts of zirconium oxide, 2 parts of magnesia, 10 parts of carborundum, 4 parts of glass fibre, 8 parts, 8 parts of silicon nitride, 30 parts of phenolic resin.
Finally it should be noted that:Obviously, above-described embodiment is only intended to clearly illustrate the application example, and simultaneously The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description Go out other various forms of changes or variation.If the variation of staving material is there is no need and unable to give all embodiments It is exhaustive.And among the obvious changes or variations thus amplified out is still in the protection domain of the application type.

Claims (3)

  1. A kind of 1. reusing of energy source environment-protection boiler, it is characterised in that:The environment-protection boiler bottom is provided with the equipment bottom of circle Seat(1), the plant bottom case(1)On be connected with cylindrical shape glass microballoon product burning production room(2), in the glass microballoon Product burning production room(2)Lower end side be provided with for the inlet valve for combustion air oxygenation and as inspection hole(3), Burnt in the glass microballoon product and produce room(2)Outside be provided with water tank(16), in inlet valve(3)Top glass it is micro- Pearl product burning production room(2)Inwall is provided with multiple fuel gas buring mouths(4), the fuel gas buring mouth(4)Top be provided with Glass microballoon raw material import(5), the glass microballoon product burning production room(2)Upper end be connected with cylindrical shape glass it is micro- Pearl forming room(6), the glass-beam forming room(6)Outside be provided with heat-insulation layer(7), the heat-insulation layer(7)With the glass Glass microballon forming room(6)Between be provided with water tank vaporium(8).
  2. 2. reusing of energy source environment-protection boiler according to claim 1, it is characterised in that:The glass-beam forming room(6) Cylinder on be provided with a circle sparge pipe(9), the sparge pipe(9)One end be filler(10), the filler(10)Stretch Go out heat-insulation layer(7)Outside top.
  3. 3. reusing of energy source environment-protection boiler according to claim 2, it is characterised in that:In heat-insulation layer(7)Top also set It is equipped with relief valve connection(11)And steam (vapor) outlet(12), air inducing pipeline(13)One end connection glass-beam forming room(6)Cylinder Body upper end, or air inducing pipeline(13)Forming room is located at after introducing water tank(6)Heat-insulation layer is stretched out on the outside of other positions(7);Draw Wind pipeline(13)The other end connection heat-insulation layer(7)Air-introduced machine is connect under outer(14), the glass-beam forming room(6)Lower end It is symmetrically arranged with multiple glass microballoon product outlets(15), the glass microballoon product outlet(15)Stretch out heat-insulation layer(7)Outside.
CN201720683679.8U 2017-06-13 2017-06-13 A kind of reusing of energy source environment-protection boiler Active CN206915989U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720683679.8U CN206915989U (en) 2017-06-13 2017-06-13 A kind of reusing of energy source environment-protection boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720683679.8U CN206915989U (en) 2017-06-13 2017-06-13 A kind of reusing of energy source environment-protection boiler

Publications (1)

Publication Number Publication Date
CN206915989U true CN206915989U (en) 2018-01-23

Family

ID=61315423

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720683679.8U Active CN206915989U (en) 2017-06-13 2017-06-13 A kind of reusing of energy source environment-protection boiler

Country Status (1)

Country Link
CN (1) CN206915989U (en)

Similar Documents

Publication Publication Date Title
CN206915989U (en) A kind of reusing of energy source environment-protection boiler
CN205155914U (en) Clean pollution -free boiler
CN207537334U (en) A kind of reusing of energy source environment-protection boiler
CN208205408U (en) A kind of classification preheating energy-saving environment-friendly type hot-water boiler
CN206919382U (en) A kind of energy-saving gas water heater
CN107056026A (en) A kind of reusing of energy source environment-protection boiler and its application
CN205782931U (en) Spiral-flow type combustion furnace
CN207162930U (en) A kind of New-type boiler
CN207180003U (en) A kind of anti-scald and the boiler of environmental protection
CN207907484U (en) A kind of boiler plant of multiloop heat exchange
CN206113007U (en) High -efficient low heating stove of arranging
CN207214435U (en) A kind of homogeneous heating and the coal-burning boiler of environmental protection
CN208998120U (en) A kind of high efficiency heating stove of double-furnace-body double water tank, double chimney water packets
CN205783749U (en) A kind of three backhaul water heaters in terms of hot-water boiler
CN204358947U (en) A kind of Verticle hot-water heating stove
CN205859973U (en) A kind of integral biomass steam generator
CN205191904U (en) Novel heating stove
CN208312708U (en) A kind of inner-tube structure of energy-saving hot water stove
CN207335159U (en) A kind of Novel back-burning environment-protection boiler
CN209445585U (en) A kind of energy-saving type boiler
CN108167888B (en) A kind of Multilayer Network barrel type energy-saving stove
CN205640856U (en) Energy -conserving coal -fired steam boiler that production white carbon was used
CN207569907U (en) Hydrolysate depickling heating facility is given using boiler smoke
CN208998324U (en) A kind of thermal circulation boiler
CN102042674A (en) Energy-saving water boiler

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Huang Shangyong

Inventor before: Huang Shangyong

Inventor before: Shi Changnian

CB03 Change of inventor or designer information