CN207569872U - Gas mixing unit and gas heater - Google Patents
Gas mixing unit and gas heater Download PDFInfo
- Publication number
- CN207569872U CN207569872U CN201721624323.3U CN201721624323U CN207569872U CN 207569872 U CN207569872 U CN 207569872U CN 201721624323 U CN201721624323 U CN 201721624323U CN 207569872 U CN207569872 U CN 207569872U
- Authority
- CN
- China
- Prior art keywords
- gas
- channel
- venturi tube
- combustion gas
- mixing unit
- 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.)
- Withdrawn - After Issue
Links
- 239000007789 gas Substances 0.000 claims abstract description 117
- 239000000567 combustion gas Substances 0.000 claims abstract description 83
- 239000007921 spray Substances 0.000 claims abstract description 34
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 35
- 230000003197 catalytic effect Effects 0.000 claims description 28
- 230000008602 contraction Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 27
- 238000002485 combustion reaction Methods 0.000 abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000007084 catalytic combustion reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241000264877 Hippospongia communis Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002937 thermal insulation foam Substances 0.000 description 1
Abstract
The utility model discloses a kind of gas mixing unit and gas heaters, gas mixing unit includes ontology, Venturi tube and combustion gas inlet pipe, the ontology offers the channel through the ontology, the combustion gas inlet pipe is connected to the side of the ontology, the Venturi tube is located in channel and the inner wall of the connection channel, Venturi tube is located between air inlet and the gas outlet of the channel, the combustion gas distribution cavity for connecting the combustion gas inlet pipe is collectively formed with the inner wall of the channel for the Venturi tube, the combustion gas distribution cavity includes annular spray orifice, the opening of the annular spray orifice is towards the gas outlet and positioned at the exit of the Venturi tube.Air-swirl can roll up the combustion gas inhaled and sprayed by annular spray orifice, so that combustion gas is sufficiently mixed with air in channel, the mixed gas of combustion gas well-mixed in this way and air can realize abundant burning in gas heater, so as to improve efficiency of combustion, and the generation of the harmful substances such as nitrogen oxides (NOx) and carbon monoxide can be reduced.
Description
Technical field
The utility model is related to technical field of water heaters more particularly to a kind of gas mixing units and gas heater.
Background technology
Gas heater in the relevant technologies is by way of combustion gas in the combustion chamber in gas heater to cold water
It is heated, however, as combustion gas before entering into the combustion chamber with air undercompounding, leads to combustion gas so in the combustion chamber
It is not easy fully to burn, reduces efficiency of combustion, and easily generate the harmful substances such as nitrogen oxides (NOx) and carbon monoxide.
Utility model content
The utility model provides a kind of gas mixing unit and gas heater.
The gas mixing unit of the utility model embodiment includes ontology, Venturi tube and combustion gas inlet pipe, the ontology
The channel through the ontology is offered, the combustion gas inlet pipe is connected to the side of the ontology, and the Venturi tube is located at institute
It states in channel and the inner wall of the connection channel, the Venturi tube is located between air inlet and the gas outlet of the channel, institute
It states Venturi tube and the combustion gas distribution cavity for connecting the combustion gas inlet pipe, the combustion gas distribution cavity is collectively formed with the inner wall of the channel
Including annular spray orifice, the opening of the annular spray orifice is towards the gas outlet and positioned at the exit of the Venturi tube.
When above-mentioned gas mixing unit is applied to gas heater, air can enter Venturi tube by the air inlet of channel,
And form air-swirl in the exit of Venturi tube.Air-swirl can roll up the combustion gas inhaled and sprayed by annular spray orifice, so that
Combustion gas is sufficiently mixed with air in channel, and the mixed gas of combustion gas well-mixed in this way and air is in gas heater
Interior to realize abundant burning, so as to improve efficiency of combustion, and it is harmful to reduce nitrogen oxides (NOx) and carbon monoxide etc.
The generation of substance.
In some embodiments, one end of the Venturi tube is formed along the direction of the air inlet to the gas outlet
There is contraction structure.
In some embodiments, the value range of the angle of throat of the contraction structure is 10-40 degree.
In some embodiments, the channel includes being located at institute in the inlet channel of cylindrical shape, the inlet channel
The lower section of Venturi tube and the connection Venturi tube are stated, the cross-sectional area of the inlet channel is more than the horizontal stroke of the Venturi tube
Sectional area.
In some embodiments, the ontology includes pedestal and end cap, and the end cap is arranged on the pedestal, described
Channel runs through the pedestal and the end cap, and the Venturi tube connection is located at the inner wall of the channel in the pedestal, institute
The side that combustion gas inlet pipe is connected to the pedestal is stated, the end cap includes the mixing tube for being convexly equipped in the pedestal, and the channel passes through
The mixing tube is worn, institute is collectively formed in the port of export of the Venturi tube and the inner wall of the channel in the mixing tube
Annular spray orifice is stated, the channel in the mixing tube is as air and the hybrid channel of combustion gas.
In some embodiments, the upper surface of the pedestal is formed with mounting groove, and the end cap includes the connection of annular
Plate, the mixing tube are upwardly extended from the inside of the connecting plate, and the connecting plate is installed in the mounting groove, the connection
Plate is concordant with the upper surface of the pedestal.
In some embodiments, the gas mixing unit include be installed on the base side first flange disk and
Second flange disk, the first flange disk and the second flange disk interval, the combustion gas inlet pipe are located at the first flange disk
Between the second flange disk.
In some embodiments, the first flange disk, the pedestal, the combustion gas inlet pipe, the Venturi tube and
The second flange disk is structure as a whole.
In some embodiments, the value range of the gap width of the annular spray orifice is 0.5-3mm.
In some embodiments, the value range of the diameter of the outlet of the Venturi tube is 20-60mm；The text mound
In pipe entrance diameter value range be 40-80mm.
The gas heater of the utility model embodiment includes preheated burning device, catalytic burner, heat exchanger and above-mentioned
Gas mixing unit described in any embodiment, the gas mixing unit connect the preheated burning device and the catalysis combustion
Burner and the mixed gas for providing air and combustion gas to the preheated burning device and the catalytic burner, the preheating combustion
For heating the catalytic burner, the catalytic burner is used to heat the heat exchanger burner.
In above-mentioned gas heater, air can be entered Venturi tube by the air inlet of channel, and in the outlet of Venturi tube
Place forms air-swirl.Air-swirl can roll up the combustion gas inhaled and sprayed by annular spray orifice, so that combustion gas and air are in channel
It is sufficiently mixed, the mixed gas of combustion gas well-mixed in this way and air can realize abundant combustion in gas heater
It burns, so as to improve efficiency of combustion, and the generation of the harmful substances such as nitrogen oxides (NOx) and carbon monoxide can be reduced.
In some embodiments, the gas heater includes rectifier, and the rectifier connects the combustion gas mixing
Device and the catalytic burner, after the rectifier is used for the mixed gas rectification for providing the gas mixing unit
It exports to the catalytic burner.
The additional aspect and advantage of the utility model embodiment will be set forth in part in the description, partly will be from following
Description in become apparent or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment
Become apparent and be readily appreciated that, wherein：
Fig. 1 is the stereoscopic schematic diagram of the gas mixing unit of the utility model embodiment.
Fig. 2 is the diagrammatic cross-section of the gas mixing unit of the utility model embodiment.
Fig. 3 is another diagrammatic cross-section of the gas mixing unit of the utility model embodiment.
Fig. 4 is the another diagrammatic cross-section of the gas mixing unit of the utility model embodiment.
Fig. 5 is the part-structure schematic diagram of the gas heater of the utility model embodiment.
Fig. 6 is the module diagram of the gas heater of the utility model embodiment.
Fig. 7 is another module diagram of the gas heater of the utility model embodiment.
Main element symbol description：
Gas heater 100；
Gas mixing unit 10, ontology 11, channel 111, inner wall 112, air inlet 113, gas outlet 114, inlet channel
115th, Venturi tube 12, outlet 121, contraction structure 122, connecting pipe 123, entrance 124, combustion gas inlet pipe 13, combustion gas distribution cavity
14th, annular spray orifice 141, pedestal 15, upper surface 151, mounting groove 152, lower face 153, end cap 16, mixing tube 161, connecting plate
162nd, first flange disk 17, second flange disk 18；
Preheated burning device 20, igniter 21, catalytic burner 30, rectifier 31, heat exchanger 40, gas valve body 50, air inlet
Pipe 51, control device 60, wind turbine 70.
Specific embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and it is not intended that the utility model
Limitation.
In the description of the present invention, it is to be appreciated that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ",
The orientation or position relationship of the instructions such as " clockwise ", " counterclockwise " be based on orientation shown in the drawings or position relationship, be only for
Convenient for description the utility model and simplify description rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " first ",
" second " is only used for description purpose, and it is not intended that indicating or implying relative importance or imply the technology indicated by indicating
The quantity of feature." first " is defined as a result, the feature of " second " can be expressed or implicitly include one or more
The feature." multiple " are meant that two or more in the description of the present invention, unless otherwise clearly specific
It limits.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanically connected or be electrically connected or can mutually communicate；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the interaction relationship of connection inside two elements or two elements.For this field
For those of ordinary skill, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the description of the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it
" on " or it " under " can be in direct contact including the first and second features, it is not directly to connect that can also include the first and second features
It touches but passes through the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " on
Face " is including fisrt feature right over second feature and oblique upper or to be merely representative of fisrt feature level height special higher than second
Sign.Fisrt feature second feature " under ", " lower section " and " below " including fisrt feature immediately below second feature and obliquely downward
Side is merely representative of fisrt feature level height less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the utility model.For
The disclosure of simplified the utility model, is hereinafter described the component of specific examples and setting.Certainly, they are only and show
Example, and purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals
And/or reference letter, this repetition be for purposes of simplicity and clarity, itself do not indicate discussed various embodiments and/
Or the relationship between setting.In addition, various specific techniques and the example of material that the utility model provides, but this field
Those of ordinary skill can be appreciated that the application of other techniques and/or the use of other materials.
- Fig. 4 is please referred to Fig.1, the gas mixing unit 10 of the utility model embodiment includes ontology 11, Venturi tube
12 and combustion gas inlet pipe 13.
Ontology 11 offers the channel 111 through ontology 11.Combustion gas inlet pipe 13 is connected to the side of ontology 11.Venturi tube
12 in channel 111 and the inner wall 112 of interface channel 111, Venturi tube 12 are located at the air inlet 113 and outlet of channel 111
Between mouth 114.The combustion gas distribution cavity 14 for connecting combustion gas inlet pipe 13 is collectively formed with the inner wall 112 of channel 111 for Venturi tube 12.
Combustion gas distribution cavity 14 includes annular spray orifice 141.The opening of annular spray orifice 141 is towards gas outlet 114 and positioned at Venturi tube 12
It exports at 121.
When above-mentioned gas mixing unit 10 is applied to gas heater 100, air can enter text by the air inlet of channel 111
Venturi 12, and air-swirl is formed at the outlet of Venturi tube 12 121.Air-swirl can roll up suction and be sprayed by annular spray orifice 141
The combustion gas gone out, so that combustion gas is sufficiently mixed with air in channel 111, combustion gas well-mixed in this way and air
Mixed gas can realize abundant burning in gas heater 100, so as to improve efficiency of combustion, and can reduce nitrogen oxidation
The generation of the harmful substances such as object (NOx) and carbon monoxide.
It should be noted that after air enters Venturi tube 12 by the air inlet of channel 111, in the effect of Venturi tube 12
Under, the air sprayed by the outlet 121 of Venturi tube 12 can form air-swirl in the outlet of Venturi tube 12 121.
In addition, above-mentioned combustion gas is such as can be coal gas, natural gas or liquefied petroleum gas.
In the present embodiment, Venturi tube 12 and channel 111 are coaxial.Combustion gas distribution cavity 14 is substantially in a ring.Combustion gas by
It after combustion gas inlet pipe 13 enters combustion gas distribution cavity 14, can be uniformly distributed in combustion gas distribution cavity 14, so as to equably be sprayed by annular
Hole 141 sprays.
In some embodiments, the direction of one end of Venturi tube 12 along air inlet 113 to gas outlet 114 is formed with receipts
Shrinking structure 122.
In this way, contraction structure 122 is formed such that the outer wall in contraction structure 122 into the combustion gas in combustion gas distribution cavity 14
Guide functions under can fully and be evenly directed to annular spray orifice 141.In addition, the formation of contraction structure 122 can speed up
Air velocity in Venturi tube 12, and air can be made to form stronger air-swirl at the outlet of Venturi tube 12 121.
In some embodiments, the value range of the angle of throat a of contraction structure 122 is 10-40 degree.
In this way, the shrinkage degree of contraction structure 122 is moderate, it can either ensure that air is had in Venturi tube 12 in this way
Effect accelerates, and stronger air-swirl can be then formed at the outlet of Venturi tube 12 121, can also be avoided because of contraction structure
122 contraction is excessive and causes the gas quantity sprayed by annular spray orifice 141 excessive, can ensure that air-swirl volume is inhaled by annular
During the combustion gas that spray orifice 141 sprays, the ratio of air and combustion gas can make in the range of the clean-burning rational proportion of combustion gas.
It should be noted that angle of throat a can be configured as the case may be.For example, in some instances, angle of throat a
It is 10 degree, 12 degree, 15 degree, 20 degree, 25 degree, 28 degree, 30 degree, 35 degree or 40 degree.It should be noted that the value of angle of throat a is simultaneously
It is not limited to above-mentioned cited value.
In the present embodiment, direction decrement of the contraction structure 122 along air inlet 113 to gas outlet 114 changes and extends
To the port of export of Venturi tube 12.Contraction structure 122 is substantially in cone shape, the inner left wall and pinned sheepshank of contraction structure 122
Angle between the right side inner wall of structure 122 is angle of throat a.The inner left wall of contraction structure 122 and the right side of contraction structure 122
Inner wall is opposite.
In some embodiments, channel 111 includes the inlet channel 115 in cylindrical shape.Inlet channel 115 is located at text
The lower section of venturi 12 and connection Venturi tube 12.The cross-sectional area of inlet channel 115 is more than the cross-sectional area of Venturi tube 12.
In this way, the size of inlet channel 115 is larger, air can be ensured well into channel 111 in this way.In addition, by
The air that inlet channel 115 enters Venturi tube 12 can adequately be accelerated.
In the present embodiment, Venturi tube 12 includes the company of connection inlet channel 115 and the pipeline in contraction structure 122
Thread a pipe 123.Direction decrement variation of the connecting pipe 123 along air inlet 113 to gas outlet 114.The inner wall of connecting pipe 123
It is arc-shaped horn-like.In this way, connecting pipe 123 can effectively reduce the resistance that air is flowed in Venturi tube 12, energy loss
It is small.
In some embodiments, ontology 11 includes pedestal 15 and end cap 16.End cap 16 is arranged on pedestal 15.Channel
111 run through pedestal 15 and end cap 16.The connection of Venturi tube 12 is located at the inner wall of the channel 111 in pedestal 15.Combustion gas inlet pipe 13 connects
It is connected on the side of pedestal 15.End cap 16 includes the mixing tube 161 for being convexly equipped in pedestal 15.Channel 111 runs through mixing tube 161.Literary mound
In the inner wall of the port of export and the channel 111 in the mixing tube 161 of pipe 12 annular spray orifice 141 is collectively formed.Positioned at mixing tube
Channel 111 in 161 is as air and the hybrid channel of combustion gas.
In this way, air-swirl can roll up rapidly the combustion gas inhaled and sprayed by annular spray orifice 141, so that combustion gas is being mixed with air
It closes and is further sufficiently mixed in pipe 161, can further improve the uniformity coefficient that combustion gas is mixed with air in this way.In addition, this
The structure of body 11 is relatively simple.
In the present embodiment, the arrival end connection of Venturi tube 12 is located at the inner wall of the channel 111 in pedestal 15.Literary mound
In the port of export of pipe 12 stretch into mixing tube 161 and annular spray orifice 141 be collectively formed with the inner wall of the channel 111 in mixing tube 161.
Mixing tube 161 is in cylindrical shape substantially.
In some embodiments, the upper surface 151 of pedestal 15 is formed with mounting groove 152.End cap 16 includes the company of annular
Fishplate bar 162.Mixing tube 161 is upwardly extended from the inside of connecting plate 162.Connecting plate 162 is installed in mounting groove 152.Connecting plate
162 is concordant with the upper surface 151 of pedestal 15.
In this way, end cap 16 is set to structural stability on pedestal 15 more preferably.In addition, due to connecting plate 162 and pedestal 15
Upper surface 151 it is concordant, can ensure that there is preferable sealing effect between connecting plate 162 and mounting groove 152 in this way.
In the present embodiment, mounting groove 152 is in a ring.The shape of connecting plate 162 and the shape phase of mounting groove 152
Match.
In some embodiments, gas mixing unit 10 includes the first flange disk 17 and for being installed on 15 side of pedestal
Two ring flanges 18.First flange disk 17 and second flange disk 18 are spaced.Combustion gas inlet pipe 13 is located at 17 and second method of first flange disk
Between blue disk 18.
In this way, gas mixing unit 10 can realize the fixation of position by first flange disk 17 and second flange disk 18.
In the utility model embodiment, first flange disk 17 is substantially in a ring.First flange disk 17 is located at pedestal 15
Upper end and substantially concordant with the upper surface of pedestal 15 151.First flange disk 17 surrounds connecting plate 162.18 base of second flange disk
This rectangular body shape.Second flange disk 18 is located at the lower end of pedestal 15 and substantially concordant with the lower face of pedestal 15 153.Second
Ring flange 16 surrounds the air inlet 113 of channel 111.
In some embodiments, first flange disk 17, pedestal 15, combustion gas inlet pipe 13, Venturi tube 12 and second flange
Disk 18 is structure as a whole.
In this way, 10 integrally-built stability of gas mixing unit is more preferably, and air and combustion gas can be ensured in combustion gas
It will not leak to outside gas mixing unit 10, i.e., integrally have in gas mixing unit 10 during flowing in mixing arrangement 10
Preferable sealing effect.In addition, integral structure is convenient for manufacture, and cost is relatively low.
In some embodiments, the value range of the gap width d of annular spray orifice 141 is 0.5-3mm.It is in this way, annular
The value of the gap width d of spray orifice 141 is moderate, can either ensure that combustion gas in combustion gas distribution cavity 14 can fully and equably in this way
It is sprayed by annular spray orifice 141, when can also ensure that air-swirl volume inhales the combustion gas sprayed by annular spray orifice 141, air and combustion gas
Ratio can make in the range of the clean-burning rational proportion of combustion gas.
It should be noted that the gap width d of annular spray orifice 141 can be selected as the case may be.For example, at some
In example, the gap width d of annular spray orifice 141 is 0.5mm, 0.6mm, 0.8mm, 1mm, 1.5mm, 1.8mm, 2mm, 2.2mm,
2.5mm or 3mm.It should be noted that the value of the gap width d of annular spray orifice 141 is not limited to above-mentioned cited value.
In the utility model embodiment, the gap width d everywhere of annular spray orifice 141 is equal.
In some embodiments, the value range of the diameter b1 of the outlet 121 of Venturi tube 12 is 20-60mm.Literary mound
In pipe 12 entrance 124 diameter d2 value range be 40-80mm.
In this way, the diameter d2 of the entrance 124 of the diameter b1 and Venturi tube 12 of the outlet 121 of Venturi tube 12 is moderate,
It can not only ensure that combustion gas distribution cavity 14 had sufficient allocation space, but also can ensure to be sprayed by the outlet 121 of Venturi tube 12 in this way
The air gone out can form stronger air-swirl.
It should be noted that the diameter d2 of the entrance 124 of the diameter b1 and Venturi tube 12 of the outlet 121 of Venturi tube 12
It can be configured as the case may be.For example, in some instances, the diameter b1 of the outlet 121 of Venturi tube 12 is 20mm,
22mm, 25mm, 28mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm or 60mm.The diameter of the entrance 124 of Venturi tube 12
D2 is 40mm, 42mm, 45mm, 50mm, 55mm, 58mm, 60mm, 65mm, 70mm, 75mm or 80mm.
Fig. 5-Fig. 7 is please referred to, the gas heater 100 of the utility model embodiment includes preheated burning device 20, catalysis
Gas mixing unit 10 described in burner 30, heat exchanger 40 and any of the above-described embodiment.Gas mixing unit 10 connects pre-
Heat combustor 20 and catalytic burner 30 and for providing the mixed of air and combustion gas to preheated burning device 20 and catalytic burner 30
Close gas.Preheated burning device 20 is used for heatable catalytic burner 30.Catalytic burner 30 is used for heating heat exchanger 40.
In above-mentioned gas heater 100, air can enter Venturi tube 12, and in venturi by the air inlet of channel 111
Air-swirl is formed at the outlet 121 of pipe 12.Air-swirl can roll up the combustion gas inhaled and sprayed by annular spray orifice 141, so that combustion
Gas is sufficiently mixed with air in channel 111, and the mixed gas of combustion gas well-mixed in this way and air is in gas and hot water
Abundant burning can be realized in device 100, so as to improve efficiency of combustion, and nitrogen oxides (NOx) and carbon monoxide can be reduced
Etc. harmful substances generation.
It should be noted that heat exchanger 40 can be according to circumstances configured.For example, in some instances, heat exchanger 40 wraps
Include finned heat exchanger and hot cubic structure heat exchanger.Wherein, without coil pipe around the cavity of hot cube formula structure heat exchanger, and
Heat insulation foam and/or coating heat insulating coating can be pasted in portion in the cavity.In this way, heat exchanger 40 can be realized by fin structure it is main
Heat exchange, and pass through heat cube formula structure and realize thermal insulation.In other examples, heat exchanger 40 includes finned heat exchanger and jacket type
Heat exchanger.Wherein, it is full of water in the chuck of jacketed type exchanger.
In the utility model embodiment, gas heater 100 includes igniter 21.Catalytic burner 30 includes methane
Catalyst for catalytic combustion (not shown).The combustion gas come out by gas mixing unit 10 and the mixed gas of air enter preheating combustion
After burner 20, igniter 21 is lighted a fire to entering the above-mentioned mixed gas in preheated burning device 20 so that mixed gas is fired
It burns, so as to which preheated burning device 20 be made to preheat catalytic burner 30.It, can when the temperature of catalytic burner 30 reaches 600 degree or more
The amount of the mixed gas of combustion gas and air is increased, to reach certain de- firewire speed, so as to be realized on catalytic burner 30
Flameless catalytic combustion.
Preferably, preheated burning device 20 includes ceramic honey comb preheated burning device.Catalytic burner 30 is catalyzed including reverse buckling type
Burner.
In some embodiments, gas heater 100 includes rectifier 31.Rectifier 31 connects gas mixing unit
10 and catalytic burner 30.Output to catalysis is fired after rectifier 31 is used for the mixed gas rectification for providing gas mixing unit 10
Burner 30.
In this way, the flow for the mixed gas that can be adjusted by rectifier 31 in catalytic burner 30, so as to ensure to fire
Gas can carry out sufficiently catalytic burning in catalytic burner 30.
In some embodiments, gas heater 100 includes gas valve body 50, air inlet pipe 51 and control device 60.Combustion
Air valve body 50 is set to air inlet pipe 51.The outlet combustion gas inlet pipe 13 of air inlet pipe 51.Control device 60 and 50 electricity of gas valve body
Property connection.Control device 60 is used to control the aperture of gas valve body 50 to control the gas flow of air inlet pipe 51.
In this way, the aperture of gas valve body 50 can be controlled to reach the combustion gas that intelligence adjusts air inlet pipe 51 by control device 60
The purpose of flow, so as to advanced optimize the ratio of combustion gas and air mixing in gas mixing unit 10.
In the utility model embodiment, gas heater 100 includes wind turbine 70.Wind turbine 70 connects gas mixing unit
10.Wind turbine 70 is configured for providing air to the air inlet 113 of channel 111.Needing to carry to gas mixing unit 10
During for air, control device 60 for wind turbine 70 to be controlled to start and is started to work to form air stream, so as to channel 111 into
Gas port 113 provides air.In addition, control device 60 is used to control the mixed gas that rectifier 31 provides gas mixing unit 10
Output is to catalytic burner 30 after rectification, and is used to that igniter 21 to be controlled to carry out the mixed gas entered in preheated burning device 20
Igniting is so that mixed gas is burnt.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. mean with reference to the embodiment or the specific features of example description,
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned
The schematic representation of term may not refer to the same embodiment or example.Moreover, the specific features of description, structure, material
Or feature can in an appropriate manner combine in any one or more embodiments or example.
While there has been shown and described that the embodiment of the utility model, it will be understood by those skilled in the art that：
In the case of the principle and objective for not departing from the utility model can these embodiments be carried out with a variety of variations, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (12)
1. a kind of gas mixing unit, which is characterized in that including ontology, Venturi tube and combustion gas inlet pipe, the ontology offers
Through the channel of the ontology, the combustion gas inlet pipe is connected to the side of the ontology, and the Venturi tube is located at the channel
Interior and the connection channel inner wall, the Venturi tube are located between air inlet and the gas outlet of the channel, the text mound
In pipe the combustion gas distribution cavity that connects the combustion gas inlet pipe is collectively formed with the inner wall of the channel, the combustion gas distribution cavity includes ring
Shape spray orifice, the opening of the annular spray orifice is towards the gas outlet and positioned at the exit of the Venturi tube.
2. gas mixing unit as described in claim 1, which is characterized in that one end of the Venturi tube is along the air inlet
Contraction structure is formed with to the direction of the gas outlet.
3. gas mixing unit as claimed in claim 2, which is characterized in that the value range of the angle of throat of the contraction structure
For 10-40 degree.
4. gas mixing unit as described in claim 1, which is characterized in that the channel includes leading in the air inlet of cylindrical shape
Road, the inlet channel are located at the lower section of the Venturi tube and the connection Venturi tube, the cross section of the inlet channel
Product is more than the cross-sectional area of the Venturi tube.
5. gas mixing unit as described in claim 1, which is characterized in that the ontology includes pedestal and end cap, the end
Lid is arranged on the pedestal, and the channel runs through the pedestal and the end cap, and the Venturi tube connection is located at the bottom
The inner wall of the channel in seat, the combustion gas inlet pipe are connected to the side of the pedestal, and the end cap includes being convexly equipped in described
The mixing tube of pedestal, the channel run through the mixing tube, and the port of export of the Venturi tube is with being located in the mixing tube
The annular spray orifice is collectively formed in the inner wall of the channel, and the channel in the mixing tube is as air and combustion gas
Hybrid channel.
6. gas mixing unit as claimed in claim 5, which is characterized in that the upper surface of the pedestal is formed with mounting groove,
The end cap includes the connecting plate of annular, and the mixing tube is upwardly extended from the inside of the connecting plate, the connecting plate installation
In in the mounting groove, the connecting plate is concordant with the upper surface of the pedestal.
7. gas mixing unit as claimed in claim 5, which is characterized in that the gas mixing unit includes being installed on described
The first flange disk of base side and second flange disk, the first flange disk and the second flange disk interval, the combustion gas
Inlet pipe is between the first flange disk and the second flange disk.
8. gas mixing unit as claimed in claim 7, which is characterized in that the first flange disk, the pedestal, the combustion
Gas inlet pipe, the Venturi tube and the second flange disk are structure as a whole.
9. gas mixing unit as described in claim 1, which is characterized in that the value model of the gap width of the annular spray orifice
It encloses for 0.5-3mm.
10. gas mixing unit as described in claim 1, which is characterized in that the diameter of the outlet of the Venturi tube takes
It is worth ranging from 20-60mm；The value range of the diameter of the entrance of the Venturi tube is 40-80mm.
11. a kind of gas heater, which is characterized in that including preheated burning device, catalytic burner, heat exchanger and claim 1-
10 any one of them gas mixing units, the gas mixing unit connect the preheated burning device and the catalytic burner
And the mixed gas for providing air and combustion gas to the preheated burning device and the catalytic burner, the preheated burning device
For heating the catalytic burner, the catalytic burner is used to heat the heat exchanger.
12. gas heater as claimed in claim 11, which is characterized in that the gas heater includes rectifier, described
Rectifier connects the gas mixing unit and the catalytic burner, and the rectifier is used to carry the gas mixing unit
It is exported after the mixed gas rectification supplied to the catalytic burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624323.3U CN207569872U (en) | 2017-11-28 | 2017-11-28 | Gas mixing unit and gas heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624323.3U CN207569872U (en) | 2017-11-28 | 2017-11-28 | Gas mixing unit and gas heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207569872U true CN207569872U (en) | 2018-07-03 |
Family
ID=62688713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721624323.3U Withdrawn - After Issue CN207569872U (en) | 2017-11-28 | 2017-11-28 | Gas mixing unit and gas heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207569872U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838786A (en) * | 2017-11-28 | 2019-06-04 | 芜湖美的厨卫电器制造有限公司 | Gas mixing unit and gas heater |
| CN111274708A (en) * | 2020-02-14 | 2020-06-12 | 哈尔滨工程大学 | Method for predicting penetration distance of multiple-injection spraying of marine diesel engine |
| CN118149343A (en) * | 2024-02-27 | 2024-06-07 | 深圳三环电子有限公司 | Combustor and application |
-
2017
- 2017-11-28 CN CN201721624323.3U patent/CN207569872U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838786A (en) * | 2017-11-28 | 2019-06-04 | 芜湖美的厨卫电器制造有限公司 | Gas mixing unit and gas heater |
| CN109838786B (en) * | 2017-11-28 | 2024-03-29 | 芜湖美的厨卫电器制造有限公司 | Gas mixing device and gas water heater |
| CN111274708A (en) * | 2020-02-14 | 2020-06-12 | 哈尔滨工程大学 | Method for predicting penetration distance of multiple-injection spraying of marine diesel engine |
| CN111274708B (en) * | 2020-02-14 | 2022-04-29 | 哈尔滨工程大学 | Method for predicting penetration distance of multiple-injection spraying of marine diesel engine |
| CN118149343A (en) * | 2024-02-27 | 2024-06-07 | 深圳三环电子有限公司 | Combustor and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2009008758A1 (en) | Air heater | |
| CN104272024A (en) | Burner | |
| CA2729614A1 (en) | High efficiency gas-fired water heater | |
| CN101639218A (en) | Flameless combustion heat accumulating type flat flame combustion nozzle | |
| CN207569872U (en) | Gas mixing unit and gas heater | |
| CN109838786A (en) | Gas mixing unit and gas heater | |
| CN103307600B (en) | Heat accumulative gas burner | |
| CN104456947A (en) | Heat accumulating type pure air heating system | |
| CN202141052U (en) | Burner with radiant pipe | |
| WO2021063049A1 (en) | Gas water heater | |
| CN102252323A (en) | Self-preheating oxygen-enriched combustor for combustion furnace with oxygen-enriched nozzle | |
| CN204663631U (en) | The shaping assembly structure of Diesel engine DPF low-temp recovery igniter loudspeaker conduit | |
| CN203703970U (en) | Infrared heating device | |
| CN209042362U (en) | Burner and gas cooker | |
| CN102434896B (en) | A kind of can the gas-cooker of improving energy efficiency | |
| CN206955666U (en) | New type auto temperature control combustion gas oxidation pot system | |
| CN100470162C (en) | Gas-fired water heating boiler | |
| CN209131152U (en) | Burner assembly and water heater | |
| CN102261649A (en) | Temperature-gathering type combustion furnace self-preheating oxygen enriched burner with oxygen enriched nozzle | |
| CN201885214U (en) | Temperature-concentrating combustion furnace self-preheated oxygen-enriched combustion system with oxygen-enriching nozzles | |
| JP3672356B2 (en) | Gas injector nozzle | |
| CN205979897U (en) | From vaporization alcohol group fuel -fired furnace | |
| CN206755164U (en) | Burner assembly and there is its gas heater | |
| CN201000095Y (en) | Steam hot-water heater | |
| CN205332206U (en) | Intellectuality mixes type in advance and adds heat energy -saving nozzle in advance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220919 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. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180703 Effective date of abandoning: 20240329 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180703 Effective date of abandoning: 20240329 |