CN208671326U - Combustion heat-exchange device, burnt gas wall hanging furnace and gas heater - Google Patents
Combustion heat-exchange device, burnt gas wall hanging furnace and gas heater Download PDFInfo
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- CN208671326U CN208671326U CN201821298559.7U CN201821298559U CN208671326U CN 208671326 U CN208671326 U CN 208671326U CN 201821298559 U CN201821298559 U CN 201821298559U CN 208671326 U CN208671326 U CN 208671326U
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 106
- 239000002737 fuel gas Substances 0.000 claims abstract description 56
- 239000007789 gas Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 94
- 239000000779 smoke Substances 0.000 claims description 54
- 230000005855 radiation Effects 0.000 abstract description 10
- 230000002708 enhancing effect Effects 0.000 abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 50
- 239000003546 flue gas Substances 0.000 description 50
- 239000000243 solution Substances 0.000 description 39
- 239000000567 combustion gas Substances 0.000 description 35
- 230000000694 effects Effects 0.000 description 17
- 238000010438 heat treatment Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 230000004907 flux Effects 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 230000008676 import Effects 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003085 diluting agent Substances 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 206010020843 Hyperthermia Diseases 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000007865 diluting Methods 0.000 description 3
- 230000036031 hyperthermia Effects 0.000 description 3
- 208000018875 hypoxemia Diseases 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000005457 Black-body radiation Effects 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model provides a kind of combustion heat-exchange device, burnt gas wall hanging furnace and gas heater, wherein combustion heat-exchange device includes: burning cavity, air intlet and fuel gas inlet is offered in burning cavity, fuel gas inlet is for connecting fuel gas source；Air preheater, air preheater, which has, to be connected to the entrance of outside air and is connected to the outlet of air intlet, for being preheated to the air entered from entrance, and after air preheat to preset temperature, the air after preheating is discharged into burning cavity by outlet.By the technical solution of the utility model, combustion reaction can be promoted constantly to carry out, and burnt sufficiently, the fluff pulps such as NOx and CO are extremely low, and noise is extremely low, and ignition temperature improves, radiation heat transfer enhancing.
Description
Technical field
The utility model relates to combustion heat-exchange fields, in particular to a kind of combustion heat-exchange device, a kind of fuel wall hanging
Furnace and a kind of gas heater.
Background technique
The working principle of gas heater is: generating high-temperature flue gas by burner combustion, then will be hot by heat exchanger
It can conduct from high-temperature flue gas into water, finally generate hot water.Therefore, the heat exchanger effectiveness of gas heater is its important technology
One of index.
Currently, existing gas heater primary combustion mode is normal atmospheric burning, fractional combustion or full premix combustion.
However, above-mentioned combustion system that there are fuel gas burings is insufficient, heat-energy losses are big, the thermal efficiency is low and burning waste gas in pollutant
(such as NOx and CO) discharges the problem of higher and poor combustion stability.
Utility model content
At least one in order to solve the above-mentioned technical problem, one of the utility model is designed to provide a kind of combustion heat-exchange
Device.
Another of the utility model is designed to provide a kind of burnt gas wall hanging furnace with above-mentioned combustion heat-exchange device.
The further object of the utility model is to provide a kind of gas heater with above-mentioned combustion heat-exchange device.
To achieve the above object, the embodiment of the utility model first aspect provides a kind of combustion heat-exchange device, comprising:
Burning cavity offers air intlet and fuel gas inlet in burning cavity, and fuel gas inlet is for connecting fuel gas source；Air preheat
Device, air preheater, which has, to be connected to the entrance of outside air and is connected to the outlet of air intlet, for entering to from entrance
Air preheated, and after air preheat to preset temperature, the air after preheating is discharged into burning cavity by outlet.
Combustion heat-exchange device provided by the utility model, including burning cavity and air preheater.Specifically, burning cavity
On offer air intlet and the fuel gas inlet for being connected to fuel gas source, fuel gas source is for providing combustion gas into combustion gas cavity.Air
Preheater, which has, to be connected to the entrance of outside air and is connected to the outlet of air intlet, can by the way that air preheater is arranged
The air entered in air preheater from entrance is preheated, and can will be preheated to after air preheat to preset temperature
The air of preset temperature is discharged into burning cavity by outlet.It through the above scheme, can be from air intlet into burning cavity
High temperature air is inputted, to be conducive to that combustion reaction is promoted constantly to carry out, so that the combustion heat-exchange device has combustion in burning
Burn cavity in it is bright, without localized hyperthermia's flame, reaction rate is low, local heat release is few, heat flux distribution uniformly, combustion peak temperature it is low
And the advantage that burning is abundant, the fluff pulps such as NOx and CO are extremely low, noise is extremely low, and bulk temperature mentions in burning cavity
Height, radiation heat transfer enhancing.
Wherein, optionally, preset temperature is greater than or equal to 700 DEG C, and is less than or equal to 1600 DEG C, such as preset temperature can
To be 700 DEG C, 900 DEG C, 1200 DEG C, 1400 DEG C or 1600 DEG C.After the air of preheating temperature enters burning cavity, have to combustion gas
Preferable pre- heat effect.
In addition, the combustion heat-exchange device in above-described embodiment provided by the utility model can also have following supplementary technology
Feature:
In above-mentioned technical proposal, it is preferable that offer the first smoke outlet, combustion heat-exchange device in burning cavity further include:
Petticoat pipe, be located on the first smoke outlet, and the second smoke outlet is offered on petticoat pipe；First heat exchanging water pipe is set in petticoat pipe, and is located at
Between first smoke outlet and the second smoke outlet.
In the present solution, combustion heat-exchange device further includes petticoat pipe and the first heat exchanging water pipe, by offering in burning cavity
One smoke outlet offers the second smoke outlet on petticoat pipe, and the first heat exchanging water pipe is set in petticoat pipe, and is located at the first smoke outlet and second
Between smoke outlet, the high-temperature flue gas being discharged from burning cavity can be utilized, by convection type by the heat transfer of flue gas extremely
First heat exchanging water pipe heats the water flow in the first heat exchanging water pipe to realize.Through the above scheme, so that burning cavity
In high-temperature flue gas can be recycled, saved the energy, and improve heat transfer effect.
In any of the above-described technical solution, it is preferable that further include: the second heat exchanging water pipe is set to the inner surface of burning cavity
On；Wherein, combustion heat-exchange device has cold water inlet and hot water outlet, the second heat exchanging water pipe and the first heat exchanging water pipe series connection
Between cold water inlet and hot water outlet.
It, can be with radiation mode in the present solution, by inner surface that the second heat exchanging water pipe is set to burning cavity
For the heat transfer generated when by fuel gas buring to the second heat exchanging water pipe is transferred to, heat exchange efficiency is high.By the second heat exchanging water pipe and
First heat exchanging water pipe is connected between cold water inlet and hot water outlet, so that from the water flow that cold water inlet enters, it can
After the first heat exchanging water pipe and the second heat exchanging water pipe heating, is flowed out from hot water outlet, realize secondary heat exchange, the burning
Heat-exchanger rig has the advantages that heating speed is fast and heating efficiency is high, rapidly can provide hot water for user.
In any of the above-described technical solution, it is preferable that the first smoke outlet is located at the top of burning cavity, air intlet and combustion gas
Import is respectively positioned on the bottom of burning cavity.
In the present solution, being located at the top of burning cavity by the first smoke outlet, air intlet and fuel gas inlet are respectively positioned on
The bottom of burning cavity can mix rapidly after so that combustion gas and high temperature air is entered burning cavity, have flame it is short and
The effect of concentration.On the other hand, the flue gas in burning cavity after full combustion is enable to be expelled to combustion chamber from the first smoke outlet
In vitro, be conducive to reduce the intracorporal pressure of combustion chamber, and flue gas can be preferably dilute to the air progress far from air inlet side
It releases, keeps fuel gas buring abundant, heat transfer effect is more stable.
In any of the above-described technical solution, it is preferable that the bore of the first smoke outlet is less than the bore of air intlet.
In the present solution, enabling flue gas burning by the bore of the first smoke outlet less than the bore of air intlet
It is circulated in cavity, is conducive to the air in further dilute combustion cavity, fires combustion gas under hypoxemia diluting condition
It burns, advantageously reduces the content of the pollutants such as NOx and CO in flue gas.
In any of the above-described technical solution, it is preferable that further include: multiple heat exchange fins, all heat exchange fins are sleeved on first
On heat exchanging water pipe, and it is spaced between every two adjacent heat exchange fin.
In the present solution, by being set with multiple heat exchange fins on the first heat exchanging water pipe, and every two adjacent change is set
It is spaced between hot fin, heat convection effect is further improved, the heat in flue gas is enable preferably to be transferred to
In water flow in one heat exchanging water pipe, quickly, efficiently to be heated to the water flow in the first heat exchanging water pipe.
In any of the above-described technical solution, it is preferable that the bore of fuel gas inlet is less than the bore of air intlet；And/or combustion gas
The quantity of import be it is multiple, multiple fuel gas inlets are arranged successively setting along the circumferential direction of air intlet, and every two adjacent
It is spaced between fuel gas inlet.
In the present solution, further improving air to combustion by the bore of air intlet greater than the bore of fuel gas inlet
The Involving velocity of gas enables the combustion gas at each fuel gas inlet quickly and uniformly to mix with air.Pass through fuel gas inlet
Quantity be it is multiple, multiple fuel gas inlets are arranged successively setting along the circumferential direction of air intlet, and every two adjacent combustion gas into
Involving velocity spaced between mouthful, when can enter burning cavity using air, make combustion gas at each fuel gas inlet with
Air quickly and uniformly mixes, and is conducive to improve reaction rate, and keep heat flux distribution uniform.
In any of the above-described technical solution, it is preferable that it include: blower, blower includes the air duct connecting with air preheater, and
Wind wheel in air duct, blower be used to make to be preheated in air preheater the air of preset temperature with pre-set velocity from air into
Mouth enters in burning cavity.
In the present solution, combustion heat-exchange device further includes blower, blower includes the air duct connecting with air preheater, and is set
The air of preset temperature can be made to be preheated in air preheater by the way that blower is arranged in the wind wheel in air duct with pre-set velocity
Enter in burning cavity from air intlet, so as to realize the flue gas in further volume suction burning cavity by air jet,
Flue gas is set acutely to recycle inside burning cavity, further to utilize the air in the flue gas dilution burning cavity of circulation.
Specifically, combustion gas and air can mix rapidly after entering burning cavity, converge into the reactant of one high concentration
Stream, the flame observed after ignition is short and concentrates.Further, suction burning cavity can be rolled up in the air jet of pre-set velocity
In flue gas, enable flue gas in combustion chamber body-internal-circulation, so as to realize diluent air, be lower than the oxygen concentration in air
5%~10%.Wherein, combustion gas can be carried out using about 700 degrees Celsius or more of air with the high-temperature flue gas circulated
Preheating, is promoted to ignition point or more for fuel gas temperature, promotes combustion reaction constantly to carry out to realize.This combustion peak temperature
Low, the promotion of ensemble average temperature, uniformity of temperature profile, burning cavity heat exchange enhancing, NOx and CO discharge are extremely low.
It is worth noting that from the flue gas that the first smoke outlet is discharged NOx and the pollutant loads such as CO it is extremely low, by this
Combustion heat-exchange device can reduce NOx emission 70 or more percent, improve the thermal efficiency 30 or more percent.
In any of the above-described technical solution, it is preferable that preset temperature is greater than or equal to 700 DEG C, and is less than or equal to 1600 DEG C；
And/or pre-set velocity is greater than or equal to 60m/s, and is less than or equal to 100m/s.
In the present solution, be greater than or equal to 700 DEG C by preset temperature, and it is less than or equal to 1600 DEG C, such as default temperature
Degree is 700 DEG C, 900 DEG C, 1200 DEG C, 1400 DEG C or 1600 DEG C, is conducive to promote the combustion reaction in burning cavity constantly to carry out.
It is greater than or equal to 60m/s by pre-set velocity, and is less than or equal to 90m/s, such as pre-set velocity is 60m/s, 75m/s, 80m/
S, 85m/s or 90m/s when so that air injecting burning cavity from air intlet, can be realized the flue gas in volume suction burning cavity,
To enable flue gas tempestuously to circulate in burning cavity, reach diluent air jet stream and the further effect of preheated fuel gas
Fruit.
In any of the above-described technical solution, it is preferable that the quantity of burning cavity be it is multiple, multiple burning cavities are divided at least two
A heat source group, each heat source group include at least one burning cavity；The quantity of air preheater is identical as the quantity of heat source group, often
The outlet of a air preheater is connected to the air intlet of all burning cavities in a heat source group.
In the present solution, by the quantity of burning cavity be it is multiple, multiple burning cavities are divided at least two heat source groups, often
A heat source group includes that the quantity of at least one burning cavity and air preheater is identical as the quantity of heat source group, each air
Preheater exports while being connected to the air intlet in a heat source group in all burning cavities, constitutes the heat exchange of multiple parallel connections
Mould group (each changing thermal module includes an air preheater being correspondingly connected with and a heat source group), so as to negative according to difference
Lotus demand, exchange thermal module are combined formula selection, are conducive to energy saving, the practical of combustion heat-exchange device greatly improved
Property.
Wherein, optionally, the quantity of the burning cavity in each heat source group can be the same or different, for example, can be with
It is each heat source group include two burning cavities, being also possible to a heat source group includes two burning cavities, another heat source
Group includes three burning cavities.
It is appreciated that burning cavity it is more to change thermal module exchange capability of heat strong, when in use, can be according to different heat exchange
Demand selection is exchanged heat by any thermal module of changing.It is of course also possible to work at the same time by all thermal modules of changing, reach most fast
Heat transfer rate.
In any of the above-described technical solution, it is preferable that the quantity of blower and the quantity of air preheater are identical, each blower with
Each air preheater connects one to one.
In the present solution, the quantity by blower is identical as the quantity of air preheater, each blower and each air are pre-
Hot device connects one to one, and when so that a certain heat source group working, need to only open the blower of the corresponding heat source group, can be to the heat source
The air of pre-set velocity is provided in all burning cavities in group, the sky of pre-set velocity will not be conveyed into idle heat source group
Gas is conducive to energy saving.
In any of the above-described technical solution, it is preferable that further include: flue cavity is equipped at least one heat in flue cavity
Source group offers third smoke outlet on flue cavity.
In the present solution, installing at least one heat source group in flue cavity, and in flue chamber by setting flue cavity
Third smoke outlet is set on body, enables the high-temperature flue gas in burning cavity to flow through flue cavity, then from flue cavity
Third smoke outlet is expelled to external environment.By the high-temperature flue gas in flue cavity, burning cavity can further be heated, and
With preferable insulation effect, makes the temperature in burning cavity be not easy to dissipate, improve heat utilization efficiency.
Optionally, the first smoke outlet is set to the bottom of burning cavity and/or third smoke outlet is set to flue cavity
Top.
In any of the above-described technical solution, it is preferable that further include: insulating layer, set on the outer surface of burning cavity；And/or point
Firearm is set in burning cavity, for lighting the combustion gas in burning cavity according to the control instruction received.
In the present solution, improving the intracorporal whole temperature of combustion chamber by the way that insulating layer is arranged in the outer surface of burning cavity
Degree, is conducive to enhanced rad heat transfer effect, and then can be realized the water flow rapidly heated in the second heat exchanging water pipe.By firing
It burns and igniter is set on cavity, the combustion gas in burning cavity can be lighted according to the control instruction received.
Wherein, optionally, control instruction is sent to igniter by mobile terminal.Mobile terminal includes mobile phone, remote control
Device, computer, smartwatch etc..
Optionally, realize that sending above-mentioned control to igniter refers to the control button that igniter links by triggering
It enables.
Optionally, it is sticked on radiant panel in the side of inner surface of first heat exchanging water pipe far from burning cavity, radiant panel
Surface is in black.
Optionally, combustion gas includes but is not limited to one in natural gas, manufactured gas, manufactured fuel gas, liquefied petroleum gas, biogas and coal gas
Kind or several combinations.
The embodiment of the utility model second aspect provides in a kind of burnt gas wall hanging furnace, including any of the above-described technical solution
Combustion heat-exchange device.
Burnt gas wall hanging furnace provided by the utility model, because of the combustion heat-exchange device being provided in any of the above-described technical solution,
To have all of the above beneficial effect, details are not described herein.
The embodiment of the utility model third aspect provides in a kind of gas heater, including any of the above-described technical solution
Combustion heat-exchange device.
Gas heater provided by the utility model, because of the combustion heat-exchange device being provided in any of the above-described technical solution,
To have all of the above beneficial effect, details are not described herein.
The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this
The practice of type is recognized.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of the combustion heat-exchange device of one embodiment according to the present utility model；
Fig. 2 shows the structural schematic diagrams of the combustion heat-exchange device of another embodiment according to the present utility model；
Fig. 3 shows the structural schematic diagram of the combustion heat-exchange device of further embodiment according to the present utility model；
Fig. 4 shows the schematic view of the front view of the combustion heat-exchange device of another embodiment according to the present utility model；
Fig. 5 shows the overlooking structure diagram of the combustion heat-exchange device of another embodiment according to the present utility model；
Fig. 6 shows the present invention looks up structural representation of the combustion heat-exchange device of another embodiment according to the present utility model；
Fig. 7 shows the left view structural representation of the combustion heat-exchange device of another embodiment according to the present utility model.
Wherein, corresponding relationship of the Fig. 1 into Fig. 7 between appended drawing reference and component names are as follows:
102 burning cavities, 104 air intlets, 106 fuel gas inlets, 108 air preheaters, 110 blowers, 112 first heat exchange
Water pipe, 114 second heat exchanging water pipes, 116 petticoat pipes, 118 second smoke outlets, 120 heat exchange fins, 122 flue gas entrainment block domains, 124 combustions
Burn region, 126 isocons, 128 heat source groups.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited to the limitation of following public specific embodiment.
The combustion heat-exchange device provided referring to Fig. 1 to Fig. 7 description according to some embodiments of the utility model.
As shown in Figure 1 to Figure 3, combustion heat-exchange device provided by the embodiment of the utility model includes burning cavity 102 and sky
Air preheater 108.
Specifically, air intlet 104 and the fuel gas inlet 106 for being connected to fuel gas source, combustion gas are offered in burning cavity 102
Source is for providing combustion gas into combustion gas cavity.Air preheater 108 has the entrance for being connected to outside air and is connected to air
The outlet of import 104 can carry out the air entered in air preheater 108 from entrance by the way that air preheater 108 is arranged
Preheating, and the air for being preheated to preset temperature can be discharged into burning cavity by outlet after air preheat to preset temperature
In 102.
Through the above scheme, high temperature air can be inputted into burning cavity 102 from air intlet 104, to be conducive to
Promote combustion reaction constantly to carry out so that the combustion heat-exchange device burning when have burning cavity 102 in it is bright, without local height
The advantage that warm fire flame, reaction rate are low, local heat release is few, heat flux distribution is uniform, combustion peak temperature is low and burning is abundant,
The fluff pulps such as NOx and CO are extremely low, noise is extremely low, and bulk temperature improves in burning cavity 102, radiation heat transfer enhancing.
Wherein, optionally, preset temperature is greater than or equal to 700 DEG C, and is less than or equal to 1600 DEG C, such as preset temperature can
To be 700 DEG C, 900 DEG C, 1200 DEG C, 1400 DEG C or 1600 DEG C.After the air of preheating temperature enters burning cavity 102, to combustion gas
With preferable pre- heat effect.
In one embodiment of the utility model, as depicted in figs. 1 and 2, the first smoke evacuation is offered in burning cavity 102
Mouthful, combustion heat-exchange device further include: petticoat pipe 116 be located on the first smoke outlet, and the second smoke outlet is offered on petticoat pipe 116
118；First heat exchanging water pipe 112 is set in petticoat pipe 116, and between the first smoke outlet and the second smoke outlet 118.
In the present solution, combustion heat-exchange device further includes petticoat pipe 116 and the first heat exchanging water pipe 112, by burning cavity 102
The first smoke outlet is offered, the second smoke outlet 118 is offered on petticoat pipe 116, the first heat exchanging water pipe 112 is set in petticoat pipe 116, and
Between the first smoke outlet and the second smoke outlet 118, the high-temperature flue gas being discharged from burning cavity 102 can be utilized, is passed through
Convection type flows into the heat transfer of flue gas to the first heat exchanging water pipe 112 to realize to the water in the first heat exchanging water pipe 112
Row heating.Through the above scheme, enable the high-temperature flue gas in burning cavity 102 to be recycled, save the energy, and mention
High heat transfer effect.
In some embodiments of the utility model, as depicted in figs. 1 and 2, combustion heat-exchange device further include: the second heat exchange
Water pipe 114 is set on the inner surface of burning cavity 102；Wherein, combustion heat-exchange device has cold water inlet and hot water effluent
Mouthful, the second heat exchanging water pipe 114 and the first heat exchanging water pipe 112 are connected between cold water inlet and hot water outlet.
It, can be with spoke in the present solution, by the way that the second heat exchanging water pipe 114 to be set on the inner surface of burning cavity 102
For the heat transfer generated when penetrating mode for fuel gas buring to the second heat exchanging water pipe 114 is transferred to, heat exchange efficiency is high.It is changed by second
Hot-water line 114 and the first heat exchanging water pipe 112 are connected between cold water inlet and hot water outlet so that from cold water inlet into
The water flow entered can be flowed out after the first heat exchanging water pipe 112 and the second heat exchanging water pipe 114 heating from hot water outlet, real
Secondary heat exchange is showed, which has the advantages that heating speed is fast and heating efficiency is high, can rapidly use
Family provides hot water.
In some embodiments of the utility model, as depicted in figs. 1 and 2, the first smoke outlet is located at burning cavity 102
Top, air intlet 104 and fuel gas inlet 106 are respectively positioned on the bottom of burning cavity 102.
In the present solution, being located at the top of burning cavity 102, air intlet 104 and fuel gas inlet by the first smoke outlet
106 are respectively positioned on the bottom of burning cavity 102, can mix rapidly after so that combustion gas and high temperature air is entered burning cavity 102
It closes, has the effect of that flame is short and concentrates.On the other hand, enable flue gas in burning cavity 102 after full combustion from first
Smoke outlet is expelled to outside burning cavity 102, is conducive to reduce the pressure in burning cavity 102, and flue gas can be preferably to remote
Air from 104 side of air intlet is diluted, and keeps fuel gas buring abundant, heat transfer effect is more stable.
In some embodiments of the utility model, the bore of the first smoke outlet is less than the bore of air intlet 104.
In the present solution, enabling flue gas firing by the bore of the first smoke outlet less than the bore of air intlet 104
It burns in cavity 102 and circulates, be conducive to the air in further dilute combustion cavity 102, make combustion gas in hypoxemia diluting condition
Under burn, advantageously reduce the content of the pollutants such as NOx and CO in flue gas.
In some embodiments of the utility model, as shown in Fig. 2, combustion heat-exchange device further include: multiple heat exchange fins
120, all heat exchange fins 120 are sleeved on the first heat exchanging water pipe 112, and between every two adjacent heat exchange fin 120 there are
Interval.
In the present solution, by being set with multiple heat exchange fins 120 on the first heat exchanging water pipe 112, and every two phase is set
It is spaced between adjacent heat exchange fin 120, heat convection effect is further improved, keeps the heat in flue gas better
It is transferred in the water flow in the first heat exchanging water pipe 112, quickly, efficiently to be carried out to the water flow in the first heat exchanging water pipe 112
Heating.
In some embodiments of the utility model, as shown in figure 3, the bore of fuel gas inlet 106 is less than air intlet 104
Bore；And/or the quantity of fuel gas inlet 106 be it is multiple, multiple fuel gas inlets 106 along air intlet 104 circumferential direction according to
It is secondary to be arranged and spaced between every two adjacent fuel gas inlet 106.
In the present solution, further improving sky by the bore of air intlet 104 greater than the bore of fuel gas inlet 106
Gas enables the combustion gas at each fuel gas inlet 106 quickly and uniformly to mix with air the Involving velocity of combustion gas.Pass through combustion
The quantity of gas import 106 be it is multiple, multiple fuel gas inlets 106 are arranged successively setting along the circumferential direction of air intlet 104, and often
It is spaced between two adjacent fuel gas inlets 106, Involving velocity when burning cavity 102 can be entered using air, is made
Combustion gas at each fuel gas inlet 106 is quickly and uniformly mixed with air, is conducive to improve reaction rate, and make heat flux distribution
Uniformly.
In some embodiments of the utility model, as depicted in figs. 1 and 2, combustion heat-exchange device includes: blower 110, wind
Machine 110 includes the air duct connecting with air preheater 108, and the wind wheel in air duct, and blower 110 is for making air preheater
The air of preset temperature is preheated in 108 to enter in burning cavity 102 with pre-set velocity from air intlet 104.
In the present solution, combustion heat-exchange device further includes blower 110, blower 110 includes connecting with air preheater 108
Air duct, and the wind wheel in air duct can make to be preheated to preset temperature in air preheater 108 by the way that blower 110 is arranged
Air is entered in burning cavity 102 with pre-set velocity from air intlet 104, so as to realize further volume by air jet
The flue gas in burning cavity 102 is inhaled, flue gas is enable acutely to recycle in 102 inside of burning cavity, further to utilize circulation
Air in flue gas dilution burning cavity 102.
It is worth noting that from the flue gas that the first smoke outlet is discharged NOx and the pollutant loads such as CO it is extremely low, by this
Combustion heat-exchange device can reduce NOx emission 70 or more percent, improve the thermal efficiency 30 or more percent.
In some embodiments of the utility model, preset temperature is greater than or equal to 700 DEG C, and is less than or equal to 1600
℃；And/or pre-set velocity is greater than or equal to 60m/s, and is less than or equal to 100m/s.
In the present solution, be greater than or equal to 700 DEG C by preset temperature, and it is less than or equal to 1600 DEG C, such as default temperature
Degree is 700 DEG C, 900 DEG C, 1200 DEG C, 1400 DEG C or 1600 DEG C, be conducive to promote combustion reaction in burning cavity 102 constantly into
Row.By pre-set velocity be greater than or equal to 60m/s, and be less than or equal to 90m/s, such as pre-set velocity be 60m/s, 75m/s,
80m/s, 85m/s or 90m/s when so that air injecting burning cavity 102 from air intlet 104, can be realized volume and inhale combustion chamber
Flue gas in body 102 reaches diluent air jet stream simultaneously so that flue gas be enable tempestuously to circulate in burning cavity 102
The effect of further preheated fuel gas.
In some embodiments of the utility model, as shown in Figures 4 to 7, the quantity of burning cavity 102 be it is multiple, it is more
A burning cavity 102 is divided at least two heat source groups 128, and each heat source group 128 includes at least one burning cavity 102；Air
The quantity of preheater 108 is identical as the quantity of heat source group 128, and the outlet of each air preheater 108 is connected to a heat source group
The air intlet 104 of all burning cavities 102 in 128.
In the present solution, by the quantity of burning cavity 102 be it is multiple, multiple burning cavities 102 are divided at least two heat
Source group 128, each heat source group 128 include the quantity and heat source group of at least one burning cavity 102 and air preheater 108
128 quantity is identical, and the outlet of each air preheater 108 is connected to all burning cavities 102 in a heat source group 128 simultaneously
On air intlet 104, constituting the thermal modules of changing of multiple parallel connections, (each changing thermal module includes an air preheat being correspondingly connected with
Device 108 and a heat source group 128), so as to exchange thermal module and be combined formula selection, favorably according to different load demand
In energy saving, the practicability of combustion heat-exchange device greatly improved.
Wherein, optionally, the quantity of the burning cavity 102 in each heat source group 128 can be the same or different, example
Such as, can be each heat source group 128 includes two burning cavities 102, and being also possible to a heat source group 128 includes two burnings
Cavity 102, another heat source group 128 include three burning cavities 102.
It is appreciated that burning cavity 102 it is more to change thermal module exchange capability of heat strong, when in use, can be according to different
The selection of heat exchange demand is exchanged heat by any thermal module of changing.It is of course also possible to be worked at the same time by all thermal modules of changing, reach
Most fast heat transfer rate.
In the above-described embodiments, all burning cavities in the outlet and a heat source group 128 of an air preheater 108
It is connected between air intlet 104 on 102 by isocon 126, isocon 126 has one and is connected to air preheater 108
It the air inlet of outlet and multiple is connected respectively to the gas outlet of air intlet 104.
In some embodiments of the utility model, as shown in Figures 4 to 7, the quantity and air preheater of blower 110
108 quantity is identical, and each blower 110 connects one to one with each air preheater 108.
In the present solution, identical with the quantity of air preheater 108 by the quantity of blower 110, each blower 110 with often
A air preheater 108 connects one to one, and when so that a certain heat source group 128 working, need to only open the corresponding heat source group 128
Blower 110 can provide the air of pre-set velocity into all burning cavities 102 in the heat source group 128, will not be to not working
Heat source group 128 in convey pre-set velocity air, be conducive to energy saving.
In some embodiments of the utility model, combustion heat-exchange device further include: flue cavity is installed in flue cavity
There is at least one heat source group 128, offers third smoke outlet on flue cavity.
In the present solution, installing at least one heat source group 128 in flue cavity, and in cigarette by setting flue cavity
Third smoke outlet is set on road cavity, enables the high-temperature flue gas in burning cavity 102 to flow through flue cavity, then from flue
The third smoke outlet of cavity is expelled to external environment.It, can be to burning cavity 102 into one by the high-temperature flue gas in flue cavity
Step heating, and there is preferable insulation effect, make the temperature in burning cavity 102 be not easy to dissipate, improves heat utilization efficiency.
Optionally, the first smoke outlet is set to the bottom of burning cavity 102 and/or third smoke outlet is set to flue chamber
The top of body.
In one embodiment of the utility model, high-temperature flue gas in burning cavity 102, followed by the first smoke outlet
With third smoke outlet.
In one embodiment of the utility model, high-temperature flue gas in burning cavity 102, followed by the first smoke evacuation
Mouth, the second smoke outlet 118 and third smoke outlet.
In some embodiments of the utility model, third heat-exchanging water is provided between flue cavity and burning cavity 102
Pipe, third heat exchanging water pipe and the first heat exchanging water pipe 112 and the second heat exchanging water pipe 114 are connected on cold water inlet and hot water effluent
Between mouthful.
In some embodiments of the utility model, as shown in Figures 4 to 7, the size Control of each burning cavity 102 exists
Length, width are highly 10cm or so, and monomer thermic load controls within 1KW, realizes miniaturization, densification, be integrated into
The combustion heat-exchange device of high heat transfer effect.
In some embodiments of the utility model, combustion heat-exchange device further include: insulating layer is set to burning cavity 102
Outer surface；And/or igniter, it is set in burning cavity 102, for lighting burning cavity according to the control instruction received
Combustion gas in 102.
In the present solution, being improved in burning cavity 102 by the way that insulating layer is arranged in the outer surface of burning cavity 102
Bulk temperature is conducive to enhanced rad heat transfer effect, and then can be realized the water rapidly heated in the second heat exchanging water pipe 114
Stream.By the way that igniter is arranged in burning cavity 102, can be lighted in burning cavity 102 according to the control instruction received
Combustion gas.
Wherein, optionally, control instruction is sent to igniter by mobile terminal.Mobile terminal includes mobile phone, remote control
Device, computer, smartwatch etc..
Optionally, realize that sending above-mentioned control to igniter refers to the control button that igniter links by triggering
It enables.
Optionally, it is sticked on radiant panel in the side of the first inner surface of the heat exchanging water pipe 112 far from burning cavity 102,
Radiate plate surface darkly color.
Optionally, combustion gas includes but is not limited to one in natural gas, manufactured gas, manufactured fuel gas, liquefied petroleum gas, biogas and coal gas
Kind or several combinations.
In a specific embodiment of the utility model, combustion heat-exchange device includes burning cavity 102, air preheater
108, blower 110 and the second heat exchanging water pipe 114.
Specifically, air intlet 104 and the fuel gas inlet 106 for being connected to fuel gas source are offered in burning cavity 102, are fired
Gas source is for providing combustion gas into combustion gas cavity.Air preheater 108 is connected with air intlet 104, and blower 110 is set to air
On preheater 108, be preheated in air preheater 108 700 degrees Celsius or more of air by blower 110 with pre-set velocity from sky
Gas import 104 is directed into burning cavity 102, realizes that volume inhales the flue gas in burning cavity 102, so that flue gas be enable to burn
It is recycled inside cavity 102, to utilize the air in the flue gas dilution burning cavity 102 of circulation.Wherein, combustion gas and air and cigarette
After gas three mixes in burning cavity 102, can burn and transfer heat to coiling with radiation mode is arranged in combustion chamber
The second upper heat exchanging water pipe 114 of body 102.Through the above scheme, it can be realized mild (Moderate&Intense Low
Oxygen Dilution) burning, i.e., a kind of mild combustion mode under hypoxemia diluting condition, and combustion reaction can be promoted not
It is disconnected to carry out.The combustion heat-exchange device have in burning cavity 102 it is bright, without localized hyperthermia's flame, reaction rate is low, local heat release
Less, uniformly and the low feature of combustion peak temperature, when burning the fluff pulps such as NOx and CO are extremely low, noise for heat flux distribution
It is extremely low, and 102 bulk temperature of burning cavity improves, radiation heat transfer enhancing.
Wherein, it should be noted that when pre-set velocity is greater than or equal to the flue gas in air realization volume suction burning cavity 102
Effluxvelocity.
Specifically, combustion gas and air can mix rapidly after entering burning cavity 102, converge into the reaction of one high concentration
Logistics, the flame observed after ignition is short and concentrates.Further, suction combustion chamber can be rolled up in the air jet of pre-set velocity
Flue gas in body 102 enables flue gas to recycle in burning cavity 102, so as to realize diluent air, makes the oxygen in air
Concentration is lower than 5%~10%.Wherein, 700 degrees Celsius or more of air and the high-temperature flue gas circulated can carry out combustion gas
Preheating, is promoted to ignition point or more for fuel gas temperature, so as to promote combustion reaction constantly to carry out.This combustion peak temperature
Low, the promotion of ensemble average temperature, uniformity of temperature profile, the heat exchange enhancing of burning cavity 102, NOx and CO discharge are extremely low.
In another specific embodiment of the utility model, as shown in Figure 1 to Figure 3, air by blower 110 be pressurized into
Enter air preheater 108, more than air preheat to 1000K (i.e. 726.85 degrees Celsius), and air pressure is increased to
400Pa bypasses air through air nozzle, sprays into flue gas entrainment block domain 122 with the speed of 80m/s.Combustion gas is filled by fuel gas supply
It sets (i.e. fuel gas source) and is sent into gas nozzle (i.e. fuel gas inlet 106), the combustion gas momentum at gas nozzle is smaller, passes through Air Entrainment
It gets into the air.And the flue gas inhaled with volume is mixed.Enter the combustion zone mild 124 after mixing.Combustion gas and air give up
Gas gaseous mixture burns in the combustion zone mild 124, issues infra-red radiation.Radiations heat energy passes through black body radiation heat exchanger (i.e.
Second heat exchanging water pipe 114) it is transferred to water flow.By burning and the flue gas after radiation heat transfer, by convection recuperator, (i.e. first is changed
Hot-water line 112) and water flow progress secondary heat exchange, finally flow into atmosphere.
Optionally, radiant panel, radiation are equipped in the side of the first inner surface of the heat exchanging water pipe 112 far from burning cavity 102
Plate surface is in black.
The burnt gas wall hanging furnace (not shown) that the embodiments of the present invention provide, including the burning in any of the above-described embodiment
Heat-exchanger rig.
Burnt gas wall hanging furnace (not shown) provided by the utility model, because of the combustion heat-exchange being provided in any of the above-described embodiment
Device, to have all of the above beneficial effect, details are not described herein.
The gas heater (not shown) that the embodiments of the present invention provide, including the burning in any of the above-described embodiment
Heat-exchanger rig.
Gas heater (not shown) provided by the utility model, because of the combustion heat-exchange being provided in any of the above-described embodiment
Device, to have all of the above beneficial effect, details are not described herein.
In conclusion combustion heat-exchange device, burnt gas wall hanging furnace and gas heater provided by the utility model, have burning
It is bright in cavity, without localized hyperthermia's flame, reaction rate is low, local heat release is few, heat flux distribution uniformly and combustion peak temperature
Low feature, the fluff pulps such as NOx and CO are extremely low when burning, noise is extremely low, and bulk temperature improves in burning cavity, spoke
Penetrate heat exchange enhancing.
In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as
Indication or suggestion relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace
Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection
It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right
For those skilled in the art, can understand as the case may be above-mentioned term in the present invention specifically contain
Justice.
In the description of the utility model, it is to be understood that term " on ", "lower", "left", "right", "front", "rear" etc. refer to
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and
Simplify description, rather than the device or unit of indication or suggestion meaning there must be specific direction, with specific orientation construction
And operation, it is thus impossible to be construed as a limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model
In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment
Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (15)
1. a kind of combustion heat-exchange device characterized by comprising
Burning cavity offers air intlet and fuel gas inlet in the burning cavity, and the fuel gas inlet is connected to fuel gas source；
Air preheater, the air preheater have the entrance for being connected to outside air and are connected to going out for the air intlet
Mouthful, for being preheated to the air entered from the entrance, and after the air preheat to preset temperature, after preheating
Air is discharged into the burning cavity by the outlet.
2. combustion heat-exchange device according to claim 1, which is characterized in that offer the first smoke evacuation in the burning cavity
Mouthful, the combustion heat-exchange device further include:
Petticoat pipe be located on first smoke outlet, the second smoke outlet offered on the petticoat pipe；
First heat exchanging water pipe is set in the petticoat pipe, and between first smoke outlet and second smoke outlet.
3. combustion heat-exchange device according to claim 2, which is characterized in that further include:
Second heat exchanging water pipe is set on the inner surface of the burning cavity；
Wherein, the combustion heat-exchange device has cold water inlet and hot water outlet, second heat exchanging water pipe and described the
One heat exchanging water pipe is connected between the cold water inlet and the hot water outlet.
4. combustion heat-exchange device according to claim 2, which is characterized in that
First smoke outlet is located at the top of the burning cavity, and the air intlet and the fuel gas inlet are respectively positioned on described
The bottom of burning cavity.
5. combustion heat-exchange device according to claim 2, which is characterized in that
The bore of first smoke outlet is less than the bore of the air intlet.
6. combustion heat-exchange device according to claim 2, which is characterized in that further include:
Multiple heat exchange fins, all heat exchange fins are sleeved on first heat exchanging water pipe, and every two adjacent institute
It states spaced between heat exchange fin.
7. combustion heat-exchange device according to any one of claim 1 to 6, which is characterized in that
The bore of the fuel gas inlet is less than the bore of the air intlet；And/or
The quantity of the fuel gas inlet be it is multiple, multiple fuel gas inlets are arranged successively along the circumferential direction of the air intlet
Setting, and it is spaced between the every two adjacent fuel gas inlet.
8. combustion heat-exchange device according to any one of claim 1 to 6, which is characterized in that further include:
Blower, the blower include the air duct connecting with the air preheater, and the wind wheel in the air duct, the wind
Machine is entered with pre-set velocity from the air intlet for making to be preheated to the air of the preset temperature in the air preheater
In the burning cavity.
9. combustion heat-exchange device according to claim 8, which is characterized in that
The preset temperature is greater than or equal to 700 DEG C, and is less than or equal to 1600 DEG C；And/or
The pre-set velocity is greater than or equal to 60m/s, and is less than or equal to 100m/s.
10. combustion heat-exchange device according to claim 8, which is characterized in that
The quantity of the burning cavity be it is multiple, multiple burning cavities are divided at least two heat source groups, each heat source
Group includes at least one described burning cavity；
The quantity of the air preheater is identical as the quantity of the heat source group, and the outlet of each air preheater connects
It is connected to the air intlet of all burning cavities in the heat source group.
11. combustion heat-exchange device according to claim 10, which is characterized in that
The quantity of the blower is identical as the quantity of the air preheater, each blower and each air preheater
It connects one to one.
12. combustion heat-exchange device described in 0 or 11 according to claim 1, which is characterized in that further include:
Flue cavity is equipped at least one described heat source group in the flue cavity, offers third on the flue cavity
Smoke outlet.
13. combustion heat-exchange device according to any one of claim 1 to 6, which is characterized in that further include:
Insulating layer, set on the outer surface of the burning cavity；And/or
Igniter is set in the burning cavity, for lighting the combustion in the burning cavity according to the control instruction received
Gas.
14. a kind of burnt gas wall hanging furnace characterized by comprising
Combustion heat-exchange device as described in any one of claims 1 to 13.
15. a kind of gas heater characterized by comprising
Combustion heat-exchange device as described in any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821298559.7U CN208671326U (en) | 2018-08-13 | 2018-08-13 | Combustion heat-exchange device, burnt gas wall hanging furnace and gas heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821298559.7U CN208671326U (en) | 2018-08-13 | 2018-08-13 | Combustion heat-exchange device, burnt gas wall hanging furnace and gas heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208671326U true CN208671326U (en) | 2019-03-29 |
Family
ID=65836116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821298559.7U Withdrawn - After Issue CN208671326U (en) | 2018-08-13 | 2018-08-13 | Combustion heat-exchange device, burnt gas wall hanging furnace and gas heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208671326U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954799A (en) * | 2018-08-13 | 2018-12-07 | 芜湖美的厨卫电器制造有限公司 | Combustion heat-exchange device, burnt gas wall hanging furnace and gas heater |
| CN112682785A (en) * | 2019-10-17 | 2021-04-20 | 芜湖美的厨卫电器制造有限公司 | Combustor and gas heater |
-
2018
- 2018-08-13 CN CN201821298559.7U patent/CN208671326U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954799A (en) * | 2018-08-13 | 2018-12-07 | 芜湖美的厨卫电器制造有限公司 | Combustion heat-exchange device, burnt gas wall hanging furnace and gas heater |
| CN108954799B (en) * | 2018-08-13 | 2024-02-23 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange device, gas wall-mounted furnace and gas water heater |
| CN112682785A (en) * | 2019-10-17 | 2021-04-20 | 芜湖美的厨卫电器制造有限公司 | Combustor and gas heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangdong Midea kitchen and toilet electrical appliance manufacturing Co.,Ltd. Assignor: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. Contract record no.: X2020980004872 Denomination of utility model: Combustion heat exchanger, gas wall mounted furnace and gas water heater Granted publication date: 20190329 License type: Common License Record date: 20200812 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230601 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190329 Effective date of abandoning: 20240223 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190329 Effective date of abandoning: 20240223 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |