CN206514304U - Adjustable two-stage full-premixing gas stove ejector - Google Patents
Adjustable two-stage full-premixing gas stove ejector Download PDFInfo
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- CN206514304U CN206514304U CN201621325505.6U CN201621325505U CN206514304U CN 206514304 U CN206514304 U CN 206514304U CN 201621325505 U CN201621325505 U CN 201621325505U CN 206514304 U CN206514304 U CN 206514304U
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- 239000000567 combustion gas Substances 0.000 claims description 67
- 238000002485 combustion reaction Methods 0.000 claims description 36
- 238000002347 injection Methods 0.000 claims description 29
- 239000007924 injection Substances 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 28
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- 235000013305 food Nutrition 0.000 description 1
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Abstract
The adjustable two-stage full-premixing gas stove ejector is characterized by comprising an adjusting taper rod (1), a fixed support (2), a blower (3), a first-stage air nozzle (4), a gas suction chamber (5), a first-stage mixing pipe (6), a mixer nozzle (7), a second-stage air suction chamber (8), a second-stage mixing pipe (9), a diffuser pipe (10), a first-stage air regulating valve (11), a gas regulating valve (12) and a second-stage air regulating valve (13). A small amount of low-pressure head air is provided by a fan, fuel gas is injected, residual air is injected, full premixing of fuel gas and air with an air coefficient of 1-1.1 is achieved, and full premixing variable load operation of the gas stove under a constant air-fuel ratio is achieved by adjusting the taper rod (1). Compared with the prior art, the utility model, have compact structure, simple manufacture, it is with low costs, convenient to use, easily adjust, draw and penetrate the ability reinforce, the characteristics of full premix stable performance.
Description
Technical field：
The utility model is related to a kind of civilian or commercial adjustable twin-stage fully pre-mixing gas combustion stove injector, belongs to injector
Technical applications.
Background technology：
At present, domestic gas kitchen range combustion system mainly uses partially premixed (air suspended type) combustion system, injection air
Coefficient is 0.6 or so.Compared to atmospheric burning type, full premix combustion technology is to be before combustion with air coefficient by combustion gas
1.0~1.1 air is sufficiently mixed, and the supplement of auxiliary air is not needed in combustion process, makes combustion flame short, and temperature is high, combustion
Burn abundant, the thermal efficiency and calorific intensity are high, and the noxious gas emission such as NOx and CO in flue gas is low.
In addition to the commercial Chinese food range and large stove that hotel, restaurant, dining room are used use atmospheric burning type stove except part,
It is more to be burnt using forced-air blast diffusion type.Compared to the burning of forced-air blast diffusion type, full premix combustion technology avoids fire
The situation in the flame high speed impact the bottom of a pan, reduces the loss of heat moment；It it also avoid gas concentration height and mix uneven with combustion air
Situation；Full premix combustion, which can select low discharge blower fan, reduces the pollution of noise.
With expanding economy, energy problem day is becoming tight, and country saves for efficient, cleaning, the appealing of emission reduction and people
The enhancing of energy environmental consciousness, and a variety of drawbacks that existing product is present, full premix combustion technology start progressively to apply to combustion gas
The key area of kitchen range, the Main way for development of upgrading as gas kitchen ranges, and gas-cooker realizes that the key of full premix combustion is set
Standby is full premix injector；The utility model proposes a kind of adjustable twin-stage fully pre-mixing gas combustion stove injector.
The content of the invention
The purpose of this utility model is to improve prior art not enough, and there is provided a kind of adjustable formula twin-stage fully pre-mixing gas combustion
Stove injector, using the small air quantity blower fan injection gas of low-head and air, realizes full premix injection, is realized by cone governor and become negative
The full premix injection of lotus burning operation and mixing, improve the injection performance and stable regulation performance of gas-cooker injector.
What the purpose of this utility model was realized in：
A kind of adjustable twin-stage fully pre-mixing gas combustion stove injector, including cone governor bar, hold-down support, pressure fan, one-level are empty
Gas jets, combustion gas suction chamber, one-level mixing tube, mixer nozzle, secondary air suction chamber, two grades of mixing tubes, diffuser pipe, one-levels
Air control valve, gas control valve and secondary air regulating valve；The cone governor bar is inserted from the centre bore of hold-down support left side
Enter, as the central shaft of whole injector, main air nozzle left side is close to the inner face of hold-down support, and its rear portion overcoat has
Cylinder type combustion gas suction chamber, and connect successively with one-level mixing tube and mixture gas nozzle, it is cased with two outside mixer nozzle rear portion
Level air suction chamber, thereafter immediately two grades of mixing tubes and diffuser pipe；Cone governor bar is connected with hold-down support by centre bore with screw thread
Connect, cone governor bar right end is inserted into mixture gas nozzle；Pressure fan is empty loaded on the one-level that twin-stage premixes injector entrance point entirely
Before gas regulating valve, threadably it is connected with main air regulating valve, cone governor bar is adjusted from double-stage injection device axis top
Nut is saved to screw in inside injector.Gas control valve is loaded on the fuel gas inlet of combustion gas suction chamber.Secondary air regulating valve is loaded on two
Level air suction chamber inlet.
The cone governor bar is a straight-bar being placed on injector central axis, and cone governor bar main body section is circle
Shape, wherein, left side termination is regulation nut, has a diameter larger than mobile jib diameter, for rotating cone governor bar, changes cone governor bar and exists
Front and back position on axis；There is one section of external screw thread the coupling part of cone governor bar and hold-down support, and in correspondence main air
At the necking section of nozzle and the position of mixture gas nozzle necking section, the cross section transitions of cone governor bar are the necking conical surface, are empty respectively
Throughput cone governor and gas flow cone governor.
The hold-down support is cuboid bearing, and bottom end face is lain on table top, and upper end from left to right has successively
Can be inserted into cone governor bar centre bore, main air nozzle, combustion gas suction chamber and secondary air suction chamber first in embedded groove passageway；
Embedded groove passageway in the second of inlet pipeline, embedded groove passageway is sucked with main air nozzle, combustion gas respectively in embedded groove passageway and the 4th in the 3rd
The air inlet side connection of room and secondary air suction chamber.Main air nozzle, combustion gas suction chamber and the secondary air of horizontal positioned are inhaled
The lower half entered the room is respectively embedded in the interior embedded groove passageway of hold-down support upper surface.
The pressure fan is pressure common head axial fan, and entrance is accessed in air, and outlet is empty with one-level by pipeline
Gas regulating valve is connected, and main air regulating valve is connected further through pipeline with the inlet tube of main air nozzle, and pressure fan will burn
Required a small amount of partial air, is sent in main air nozzle with the pressure head higher than gaseous-pressure 1500Pa or so, is used as injection
The driving fluid of combustion gas.
The main air nozzle is constituted by two sections, and leading portion is uiform section pipe, and back segment is necking pipe, air inlet side end face
It is the plane with center hole, cone governor bar is inserted into main air nozzle by circular hole, the company of circular hole and cone governor bar
The place of connecing is sealed with sealing ring；The inducer side of main air nozzle 4 is provided with side opening, and is connected with air inlet pipe, the air inlet pipe other end
It is connected successively with main air regulating valve and pressure fan, shape after the main air of pressure fan feeding is accelerated by main air nozzle
Into the fluid with certain flow rate.
The combustion gas suction chamber is the pipe that external diameter is more than main air nozzle, and air inlet face is the plane with center hole,
Combustion gas suction chamber is enclosed on by center hole on the outside of the postmedian of main air nozzle, and the suction casing of combustion gas suction chamber is justified for necking
Pipe, the port of export is connected with one-level mixing tube, and the STH of inducer one of combustion gas suction chamber passes through pipeline and gas control valve and combustion
Gas air supply pipe is connected.
The one-level mixing tube is straight pipe, and entrance point and the port of export suck chamber outlet end with combustion gas respectively and mix gas blowout
The entrance point connection of mouth；The mixture gas nozzle is that for necking pipe, pipe import is close to one-level mixing tube, and outlet section is inserted in two grades of skies
During aspiration is entered the room；The combustion gas suction chamber, three parts of one-level mixing tube and mixture gas nozzle are arranged in order and are formed integrally.
The profile of the secondary air suction chamber is identical with combustion gas suction chamber, and external diameter is more than the pipe external diameter of one-level mixing tube,
The side end face of secondary air suction chamber is the plane with open circles, and secondary air suction chamber is enclosed on one-level mixing tube by open circles
Postmedian on the outside of, the suction casing of secondary air suction chamber is necking pipe, and necking pipe outlet is connected with two grades of mixing tubes, two grades of skies
The air inlet section that aspiration is entered the room is provided with side opening, is connected by pipeline with secondary air regulating valve and environment.
Two grades of mixing tubes are straight pipe, inlet and outlet respectively with the outlet of secondary air suction chamber and diffuser pipe
Import is connected；The diffuser pipe is flared tube, is connected to the outlet of two grades of mixing tubes, outlet and the gas-cooker gaseous mixture of diffuser pipe
Inlet tube is connected.Full premixed gas pressure rise after diffuser pipe of two grades of mixing tube outlets.
The secondary air suction chamber, three parts of two grades of mixing tubes and diffuser pipe are arranged in order and are formed integrally.
The utility model compared with prior art, with following notable feature and good effect：
1. the utility model uses small air quantity, the pressure fan of small pressure head, makes up low-pressure fuel gas injection ability of air deficiency
Problem, realizes the full premix injection of low-pressure fuel gas；2. the design of cone governor makes the injector have the function of adjusting burner load,
For different combustion gas and operating condition, pass through the movable synchronous change main air nozzle of cone governor and mixture gas nozzle
Discharge area, so as to reach combustion gas under stable air coefficient and air mass flow with the synchronous adjustment of combustion power, very big journey
Degree improves applicability, stable regulation performance and easily operated performance that injector changes to burning load.3. structural optimization
Design, by substantial amounts of theoretical calculation and optimization design, obtains that the optimal injection for overcoming the requirement of gas-cooker flow resistance can be met
The full premixed gas of device physical dimension, minimum blower fan consumption power, and 1.0~1.15 air coefficients.
Brief description of the drawings
Fig. 1 is adjustable twin-stage fully pre-mixing gas combustion stove injector overall structure diagram of the present utility model.
Fig. 2 is the structural representation of cone governor bar of the present utility model.
Fig. 3 is support bracket fastened structural representation of the present utility model.
Fig. 4 is Fig. 3 side view.
Fig. 5 is the structural representation of main air nozzle of the present utility model.
Fig. 6 is Fig. 5 side view.
Fig. 7 is the structural representation of combustion gas suction chamber of the present utility model.
Fig. 8 is Fig. 7 side view.
Fig. 9 is the structural representation of one-level mixing tube of the present utility model.
Figure 10 is Fig. 9 side view.
Figure 11 is the structural representation of mixture gas nozzle of the present utility model.
Figure 12 is Figure 11 side view.
Figure 13 is the structural representation of secondary air suction chamber of the present utility model.
Figure 14 is Figure 13 side view.
Figure 15 is the structural representation of two grades of mixing tubes of the present utility model.
Figure 16 is Figure 15 side view.
Figure 17 is the structural representation of diffuser pipe of the present utility model.
Figure 18 is Figure 17 side view.
Each part numbers are as follows in figure：1 be cone governor bar, 2 be hold-down support, 3 be pressure fan, 4 be main air spray
Mouth, 5 be combustion gas suction chamber, 6 be one-level mixing tube, 7 be mixer nozzle, 8 be secondary air suction chamber, 9 be two grades mixing
Pipe, 10 be diffuser pipe, 11 be main air regulating valve, 12 be gas control valve, 13 be secondary air regulating valve, 14 be regulation
Nut, 15 be external screw thread, 16 be both air flow modulation cone, 17 be gas flow cone governor, 21 be hole centered on left side, 22,
23 it is embedded groove passageway in first, 24 be embedded groove passageway in the second inlet tube, 25 be embedded groove passageway in triple feed inlet pipe, 26 is the 4th inlet tube
Interior embedded groove passageway, 41 be air inlet side end face, 42 be air inlet pipe, 51 be circular hole centered on air inlet face, 52,53 be necking pipe, 81 be
Open circles, 82 are necking pipe.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Such as Fig. 1 is to Figure 10, a kind of adjustable twin-stage fully pre-mixing gas combustion stove injector, including cone governor bar 1, hold-down support
2nd, pressure fan 3, main air nozzle 4, combustion gas suction chamber 5, one-level mixing tube 6, mixer nozzle 7, secondary air suction chamber 8,
Two grades of mixing tubes 9, diffuser pipe 10, main air regulating valve 11, gas control valve 12 and secondary air regulating valve 13；The regulation
Cone bar 1 is inserted from the centre bore 22 of the left side 21 of hold-down support 2, and as the central shaft of whole injector, main air nozzle 4 is left
End face is close to the inner face of hold-down support 2, and its rear portion overcoat has a cylinder type combustion gas suction chamber 5, and with one-level mixing tube 6 and mixing
Gas jets 7 connect successively, are cased with secondary air suction chamber 8 outside the rear portion of mixer nozzle 7, thereafter immediately two grades of Hes of mixing tube 9
Diffuser pipe 10；Cone governor bar 1 and hold-down support 2 are by centre bore 22 to be threadedly coupled, and the right end of cone governor bar 1 is inserted into mixing
In gas jets 7；Pressure fan 3 is premixed before the main air regulating valve 11 of injector entrance point entirely loaded on twin-stage, threadably
It is connected with main air regulating valve 11, cone governor bar 1 is screwed in injector from double-stage injection device axis top regulation nut 14
Portion.Gas control valve 12 is loaded on the fuel gas inlet of combustion gas suction chamber 5.Secondary air regulating valve 13 is loaded on secondary air suction chamber 8
Entrance.
The cone governor bar 1 is a straight-bar being placed on injector central axis, and the main body section of cone governor bar 1 is
Circle, wherein, left side termination is regulation nut 14, has a diameter larger than mobile jib diameter, for rotating cone governor bar 1, changes regulation
Bore front and back position of the bar 1 on axis；There is one section of external screw thread 15 coupling part of cone governor bar 1 and hold-down support 2, and
At the necking section of correspondence main air nozzle 4 and the position of the necking of mixture gas nozzle 7 section, the cross section transitions of cone governor bar 1 are contracting
Prostomum face, is both air flow modulation cone 16 and gas flow cone governor 17 respectively.
The hold-down support 2 is cuboid bearing, and bottom end face is lain on table top, and upper end from left to right has successively
Can be inserted into cone governor bar 1 centre bore 22, main air nozzle 4, combustion gas suction chamber 5 and secondary air suction chamber 8 first in
Embedded groove passageway 23；Embedded groove passageway 26 is empty with one-level respectively in embedded groove passageway 25 and the 4th in embedded groove passageway the 24, the 3rd in the second of inlet pipeline
The air inlet side connection of gas jets 4, combustion gas suction chamber 5 and secondary air suction chamber 8.The main air nozzle 4 of horizontal positioned, combustion
Aspiration enter the room 5 and the lower half of secondary air suction chamber 8 be respectively embedded in the interior embedded groove passageway of the upper surface of hold-down support 2.
The pressure fan 3 is pressure common head axial fan, and entrance is accessed in air, and outlet is empty with one-level by pipeline
Gas regulating valve 11 is connected, and main air regulating valve 11 is connected further through pipeline with the inlet tube 41 of main air nozzle 4, pressure fan
3, by a small amount of partial air needed for burning, are sent in main air nozzle 4 with the pressure head higher than gaseous-pressure 1500Pa or so,
It is used as the driving fluid of injection gas.
The main air nozzle 4 is constituted by two sections, and leading portion is uiform section pipe, and back segment is necking pipe, air inlet side
Face 21 is the plane with center hole, and cone governor bar 1 is inserted into main air nozzle 4 by circular hole, circular hole and cone governor
The junction of bar 1 is sealed with sealing ring；The inducer side of main air nozzle 4 is provided with side opening, and is connected with air inlet pipe 42, air inlet
The other end of pipe 42 is connected with main air regulating valve 11 and pressure fan 3 successively, and the main air that pressure fan 3 is sent into is empty by one-level
Gas jets 4 form the fluid with certain flow rate after accelerating.
The combustion gas suction chamber 5 is the pipe that external diameter is more than main air nozzle 4, and air inlet face 51 is with center hole 52
Plane, combustion gas suction chamber 5 is enclosed on by center hole 52 on the outside of the postmedian of main air nozzle 4, the suction of combustion gas suction chamber 5
Enter section for necking pipe 53, the port of export is connected with one-level mixing tube 6, and the STH of inducer one of combustion gas suction chamber 5 passes through pipeline
It is connected with gas control valve 12 and gas supply pipe.
The one-level mixing tube 6 is straight pipe, entrance point and the port of export respectively with the port of export of combustion gas suction chamber 5 and gaseous mixture
The entrance point connection of nozzle 7；The mixture gas nozzle 7 is that for necking pipe, pipe import is close to one-level mixing tube 6, and outlet section is inserted in
In secondary air suction chamber 8；The combustion gas suction chamber 5,7 three parts of one-level mixing tube 6 and mixture gas nozzle are arranged in order system
Integrally.
The profile and combustion gas suction chamber 5 of the secondary air suction chamber 8 are identical, and external diameter is more than outside the pipe of one-level mixing tube 6
Footpath, the side end face of secondary air suction chamber 8 is the plane with open circles 81, and secondary air suction chamber 8 is enclosed on by open circles 81
On the outside of the postmedian of one-level mixing tube 6, the suction casing of secondary air suction chamber 8 is necking pipe 82, and necking pipe 82 is exported and two grades
Mixing tube 9 is connected, and the air inlet section of secondary air suction chamber 8 is provided with side opening, passes through pipeline and secondary air regulating valve 13 and environment
Connection.
Two grades of mixing tubes 9 are straight pipe, inlet and outlet outlet respectively with secondary air suction chamber 8 and diffuser pipe
10 import connection；The diffuser pipe 10 is flared tube, is connected to the outlet of two grades of mixing tubes 9, the outlet and combustion of diffuser pipe 10
Gas kitchen gaseous mixture inlet tube is connected.Full premixed gas pressure rise after diffuser pipe 10 that two grades of mixing tubes 9 are exported.
The secondary air suction chamber 8,10 3 parts of two grades of mixing tubes 9 and diffuser pipe are arranged in order and are formed integrally.
A kind of adjustable twin-stage fully pre-mixing gas combustion stove injector, its feature is including cone governor bar 1, hold-down support 2, air-supply
Machine 3, main air nozzle 4, combustion gas suction chamber 5, one-level mixing tube 6, mixer nozzle 7, secondary air suction chamber 8, two grades mix
Close pipe 9, diffuser pipe 10, main air regulating valve 11, gas control valve 12 and secondary air regulating valve 13.The cone governor bar 1
Inserted from the centre bore 22 of the left side 21 of hold-down support 2, be used as the central shaft of whole injector, the left end of main air nozzle 4
Face is close to the inner face of hold-down support 2, and its rear portion overcoat has a cylinder type combustion gas suction chamber 5, and with one-level mixing tube 6 and gaseous mixture
Nozzle 7 connects successively, and secondary air suction chamber 8 is cased with outside the rear portion of mixer nozzle 7, thereafter immediately two grades of mixing tubes 9 and expansion
Pressure pipe 10；Cone governor bar 1 and hold-down support 2 are by centre bore 22 to be threadedly coupled, and cone governor bar 1 is from left to right worn successively afterwards
Cross in main air nozzle 4, combustion gas suction chamber 5, one-level mixing tube 6, mixture gas nozzle 7 and secondary air suction chamber 8.
Partial air is sent into double-stage injection device main air nozzle 4 by the level pressure of pressure fan 3 needed for burning, through main air
Combustion gas under certain meter pressure less than blower pressure of the injection gas entrance of combustion gas suction chamber 5 after nozzle 4 accelerates, combustion gas and
The air of nozzle feeding is sufficiently mixed in one-level mixing tube 6, and mixed gas enters mixture gas nozzle 7, blended gas jets 7
Air needed for residue after acceleration under the local atmospheric pressure of the injection air intake of secondary air suction chamber 8 is all burnt, two
After level mixing tube 9 is sufficiently mixed, make the reduction of gaseous mixture speed into diffuser pipe 10, pressure rise reaches the mixing of enough pressure
Gas is admitted to follow-up pipeline, delivers to kitchen range burning.
This double-stage injection device can be illustrated using multiple material manufacture, first sprayed main air by taking cast iron materials as an example
The insertion combustion gas of mouth 4 suction chamber 5, and weld together.There is one section of necking between combustion gas suction chamber 5 and one-level mixing tube 6, then by one
Level mixing tube 6 is welded in necking outlet, finally mixed gas for welding nozzle 7 behind.By the mixture gas nozzle 7 of previously assembled body
Secondary air suction chamber 8 is inserted, is connected with welding manner, there is one section of contracting between secondary air suction chamber 8 and two grades of mixing tubes 9
Mouthful, two grades of mixing tubes 9 are welded on necking outlet.Diffuser pipe 10 is connected with welding manner after two grades of mixing tubes 9.By assembly
Entirety is put into hold-down support 2, and centre bore 22 of the cone governor 1 on hold-down support 2 is screwed in, and adjustment fixes assembly after finishing
On hold-down support 2.It is required that cone governor bar 1, combustion gas suction chamber 5, main air nozzle 4, one-level mixing tube 6, secondary air are inhaled
8, mixture gas nozzle 7, two grades of mixing tubes 9, diffuser pipes 10 enter the room on same axis.If the utility model uses plastic material
Manufacture, above welding manner connection can be changed to bonding mode connection.
Pressure fan 3 provides 5%~15% needed for fully pre-mixing gas combustion stove rated load is burnt to main air nozzle 4
Main air, air pressure head is used as the working fluid of injection gas higher than gaseous-pressure 1000Pa or so.
A small amount of air that main air nozzle 4 realizes the feeding of pressure fan 3 is depressured the function of acceleration wherein, when outlet is empty
When atmospheric pressure drops to gaseous-pressure, speed can increase to 37m/s or so, so that the ejector action to combustion gas needed for burning is completed,
Ensure that enough combustion gas are inhaled into from the import of combustion gas suction chamber 5.
The import of combustion gas suction chamber 5 connects gas pipeline, and the gas utensil of suction is for certain gauge pressure, gauge pressure size and gas families
It is relevant, by the pressure requirements in gas-cooker operating specification in the range of 2000Pa~2800Pa.The suction casing of combustion gas suction chamber 5
Length and there is certain influence on the performance of main air injection gas with the outlet of main air nozzle 4 relative position, it is necessary to rationally
Design.
One-level mixing tube 6 completes the full and uniform mixing of main air and combustion gas, the import section of one-level mixing tube 6 with
There is certain influence the distance between outlet of main air nozzle 4 to main air to the injection performance of combustion gas, need to rationally set
Meter；Additional mixing pipe diameter and length have a direct impact to mixed gas outlet pressure and flow velocity, so as to influence later stage secondary air
Injection performance, need the optimization design of structure.
Mixture gas nozzle 7 can realize the function that gaseous mixture decompression accelerates, and the outlet pressure design load of mixture gas nozzle 7 is environment
Pressure, all surplus airs in addition to main air needed for being burnt for injection fully pre-mixing gas combustion stove rated load, injection volume
The 85%~95% of generally whole air capacities.
Secondary air suction chamber 8 is suction and the injection for the secondary air realized under the effect of mixture gas nozzle 7.
Two grades of mixing tubes 9 complete whole air and the full premix of combustion gas is sufficiently mixed, the length and diameter of two grades of mixing tubes
Directly affect the pressure and flow velocity of mixed gas outlet.
Diffuser pipe 10 is flared tube, realizes the reduction of speed function of increasing pressure that two grades of mixing tubes 9 export full premixed gas, makes mixing
Gas afterwards obtains certain pressure head to overcome the flow resistance of gas-cooker system behind injector；Mixed gas outlet gauge pressure typically exists
In the range of several Pa to more than ten Pa.
Cone governor bar 1 is injector variable load operation adjusting means, by rotating regulation nut 14, promotes cone governor bar 1
Along the movable of central shaft, change the necking cone 16,17 of cone governor bar 1 and exported and mixture gas nozzle 7 in main air nozzle 4
The gas actual internal area of exit circular passage, so that the mass flow of synchronous change gas, it is ensured that gas-cooker varying duty is transported
The full premix injector outlet air system stable full premix injection 1.05 or so during row.
Main air regulating valve 11 is to adjust pressure fan 3 by valve opening to blast one-level to main air nozzle 4
Air capacity and inlet pressure, to meet full premix injection requirement during different load operation.
Gas control valve 12 is used for the gas flow and pressure of the import of regulating gas suction chamber 5, meets different load operation
When requirement of the gas-cooker to gas demand.
Secondary air regulating valve 13 is used to adjust secondary air soakage, meets full premix air during different load operation
Traffic demand.
Operation principle：
Pressure fan 3 provides the level pressure air that a small amount of gauge pressure is higher than combustion gas, is made by the decompression speedup of main air nozzle 4
With, whole combustion gas needed for injection burning, and be sufficiently mixed in one-level mixing tube 6, its pressure slightly has rising, subsequently into mixed
Close to continue to be depressured in gas jets 7 and accelerate, exit flow is by the remaining whole air of the injection of secondary air suction chamber 8, by two grades
The well-mixed gaseous mixture of mixing tube 9 enters back into diffuser pipe 10 supercharging of slowing down, and there is provided overcome rear wall firing stove system flow to hinder
Pressure head needed for power.
During gas-cooker variable load operation, by rotating regulation nut 14, change position of the cone governor bar 1 on axis,
Main air nozzle 4 and the exit flow flow cross-section areas of mixture gas nozzle 7 are adjusted in synchronism, is not changing the sky of full premixed gas
In the case of gas system, the year-on-year change for determine combustion gas under air-fuel ratio and air mass flow with combustion power, completion varying duty are realized
Regulatory function.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New spirit and scope are defined, under the premise of the utility model design concept is not departed from, ordinary skill skill in this area
The all variations and modifications that art personnel make to the technical solution of the utility model, all should fall into protection model of the present utility model
Enclose, the claimed technology contents of the utility model have all been recorded in detail in the claims.
Claims (10)
1. a kind of adjustable twin-stage fully pre-mixing gas combustion stove injector, it is characterised in that including cone governor bar (1), hold-down support (2),
Pressure fan (3), main air nozzle (4), combustion gas suction chamber (5), one-level mixing tube (6), mixer nozzle (7), secondary air
Suction chamber (8), two grades of mixing tubes (9), diffuser pipe (10), main air regulating valve (11), gas control valve (12) and two grades of skies
Gas regulating valve (13)；The cone governor bar (1) is inserted from the centre bore (22) of hold-down support (2) left side (21), as whole
The central shaft of injector, main air nozzle (4) left side is close to the inner face of hold-down support (2), and its rear portion overcoat has cylinder
Type combustion gas suction chamber (5), and connect successively with one-level mixing tube (6) and mixture gas nozzle (7), outside mixer nozzle (7) rear portion
Surface cover has secondary air suction chamber (8), thereafter immediately two grades of mixing tubes (9) and diffuser pipe (10)；Cone governor bar (1) and fixed branch
Seat (2) is by centre bore (22) to be threadedly coupled, and cone governor bar (1) right end is inserted into mixture gas nozzle (7)；Pressure fan
(3) premix before the main air regulating valve (11) of injector entrance point, threadably adjusted with main air entirely loaded on twin-stage
Valve (11) connection is saved, cone governor bar (1) is screwed in inside injector from double-stage injection device axis top regulation nut (14)；Combustion gas
Regulating valve (12) is loaded on the fuel gas inlet of combustion gas suction chamber (5)；Secondary air regulating valve (13) is loaded on secondary air suction chamber (8)
Entrance.
2. adjustable twin-stage fully pre-mixing gas combustion stove injector according to claim 1, it is characterised in that the cone governor bar
(1) it is a straight-bar being placed on injector central axis, cone governor bar (1) main body section is circle, wherein, left side termination
For regulation nut (14), mobile jib diameter is had a diameter larger than, for rotating cone governor bar (1), changes cone governor bar (1) in axis
On front and back position；There is one section of external screw thread (15) coupling part of cone governor bar (1) and hold-down support (2), and in correspondence one-level
At the necking section of air nozzle (4) and the position of mixture gas nozzle (7) necking section, the cross section transitions of cone governor bar (1) are necking
The conical surface, is both air flow modulation cone (16) and gas flow cone governor (17) respectively.
3. adjustable twin-stage fully pre-mixing gas combustion stove injector according to claim 1, it is characterised in that the hold-down support
(2) it is cuboid bearing, bottom end face is lain on table top, and upper end from left to right has pluggable cone governor bar (1) successively
Centre bore (22), main air nozzle (4), combustion gas suction chamber (5) and secondary air suction chamber (8) first in embedded groove passageway
(23)；Embedded groove passageway (24) in the second of inlet pipeline, in the 3rd in embedded groove passageway (25) and the 4th embedded groove passageway (26) respectively with one-level
The air inlet side connection of air nozzle (4), combustion gas suction chamber (5) and secondary air suction chamber (8).
4. adjustable twin-stage fully pre-mixing gas combustion stove injector according to claim 1, it is characterised in that the pressure fan (3)
For pressure common head axial fan, entrance is accessed in air, and outlet is connected by pipeline with main air regulating valve (11), and one
Level air control valve (11) is connected further through pipeline with the inlet tube (41) of main air nozzle (4), and pressure fan (3) will burn institute
The a small amount of partial air needed, is sent in main air nozzle (4) with the pressure head higher than gaseous-pressure 1500Pa or so, is used as injection
The driving fluid of combustion gas.
5. adjustable twin-stage fully pre-mixing gas combustion stove injector according to claim 1, it is characterised in that the main air
Nozzle (4) is constituted by two sections, and leading portion is uiform section pipe, and back segment is necking pipe, and air inlet side end face (21) are to carry center circle
The plane in hole, cone governor bar (1) is inserted into main air nozzle (4) by circular hole, the junction of circular hole and cone governor bar (1)
Sealed with sealing ring；The inducer side of main air nozzle 4 is provided with side opening, and is connected with air inlet pipe (42), and air inlet pipe (42) is another
One end is connected with main air regulating valve (11) and pressure fan (3) successively, and the main air of pressure fan (3) feeding is empty by one-level
Gas jets (4) form the fluid with certain flow rate after accelerating.
6. adjustable twin-stage fully pre-mixing gas combustion stove injector according to claim 1, it is characterised in that the combustion gas suction
Room (5) is the pipe that external diameter is more than main air nozzle (4), and air inlet face (51) is the plane with center hole (52), and combustion gas is inhaled
Enter the room (5) be enclosed on by center hole (52) on the outside of the postmedian of main air nozzle (4), the suction casing of combustion gas suction chamber (5)
For necking pipe (53), the port of export is connected with one-level mixing tube (6), and the STH of inducer one of combustion gas suction chamber (5) passes through pipe
Road is connected with gas control valve (12) and gas supply pipe.
7. adjustable twin-stage fully pre-mixing gas combustion stove injector according to claim 1, it is characterised in that the one-level mixing
It is straight pipe to manage (6), entrance point and the port of export respectively with combustion gas suction chamber (5) port of export and the entrance point of mixture gas nozzle (7)
Connection；The mixture gas nozzle (7) is that for necking pipe, pipe import is close to one-level mixing tube (6), and outlet section is inserted in secondary air suction
Enter the room in (8)；The combustion gas suction chamber (5), (7) three parts of one-level mixing tube (6) and mixture gas nozzle are arranged in order and are made
One.
8. adjustable twin-stage fully pre-mixing gas combustion stove injector according to claim 1, it is characterised in that the secondary air
The profile and combustion gas suction chamber (5) of suction chamber (8) are identical, and external diameter is more than the pipe external diameter of one-level mixing tube (6), secondary air suction
The side end face of room (8) is the plane with open circles (81), and secondary air suction chamber (8) is enclosed on one-level by open circles (81) and mixed
On the outside of the postmedian for managing (6), the suction casing of secondary air suction chamber (8) is necking pipe (82), and necking pipe (82) is exported and two grades
Mixing tube (9) is connected, and the air inlet section of secondary air suction chamber (8) is provided with side opening, passes through pipeline and secondary air regulating valve (13)
With environment connection.
9. adjustable twin-stage fully pre-mixing gas combustion stove injector according to claim 1, it is characterised in that two grades of mixing
It is straight pipe to manage (9), and inlet and outlet is connected with the outlet of secondary air suction chamber (8) and the import of diffuser pipe (10) respectively；
The diffuser pipe (10) is flared tube, is connected to the outlet of two grades of mixing tubes (9), the outlet of diffuser pipe (10) is mixed with gas-cooker
Gas inlet tube is connected；Full premixed gas pressure rise after diffuser pipe (10) of two grades of mixing tube (9) outlets.
10. adjustable twin-stage fully pre-mixing gas combustion stove injector according to claim 1, it is characterised in that the secondary air
Suction chamber (8), (10) three parts of two grades of mixing tubes (9) and diffuser pipe are arranged in order and are formed integrally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325505.6U CN206514304U (en) | 2016-12-06 | 2016-12-06 | Adjustable two-stage full-premixing gas stove ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325505.6U CN206514304U (en) | 2016-12-06 | 2016-12-06 | Adjustable two-stage full-premixing gas stove ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206514304U true CN206514304U (en) | 2017-09-22 |
Family
ID=59861860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621325505.6U Expired - Fee Related CN206514304U (en) | 2016-12-06 | 2016-12-06 | Adjustable two-stage full-premixing gas stove ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206514304U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361700A (en) * | 2018-05-04 | 2018-08-03 | 中国石油集团川庆钻探工程技术有限公司钻采工程技术研究院 | Venturi burner with decrease of noise functions |
| CN109882453A (en) * | 2019-03-01 | 2019-06-14 | 一汽解放汽车有限公司 | The injector of variable cross section |
| CN110360564A (en) * | 2018-04-09 | 2019-10-22 | 苏州威博特能源环保科技有限公司 | A kind of jet pipe |
| CN111854172A (en) * | 2019-04-30 | 2020-10-30 | 华帝股份有限公司 | Gas water heater and load control method thereof |
| CN113731664A (en) * | 2021-08-18 | 2021-12-03 | 江苏大学 | Gas-assisted two-component two-stage mixing atomizing nozzle |
-
2016
- 2016-12-06 CN CN201621325505.6U patent/CN206514304U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360564A (en) * | 2018-04-09 | 2019-10-22 | 苏州威博特能源环保科技有限公司 | A kind of jet pipe |
| CN108361700A (en) * | 2018-05-04 | 2018-08-03 | 中国石油集团川庆钻探工程技术有限公司钻采工程技术研究院 | Venturi burner with decrease of noise functions |
| CN109882453A (en) * | 2019-03-01 | 2019-06-14 | 一汽解放汽车有限公司 | The injector of variable cross section |
| CN111854172A (en) * | 2019-04-30 | 2020-10-30 | 华帝股份有限公司 | Gas water heater and load control method thereof |
| CN113731664A (en) * | 2021-08-18 | 2021-12-03 | 江苏大学 | Gas-assisted two-component two-stage mixing atomizing nozzle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20170922 Termination date: 20211206 |