CN116336469B - Flow path system, combustion heat exchange assembly and gas water heater - Google Patents
Flow path system, combustion heat exchange assembly and gas water heater Download PDFInfo
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- CN116336469B CN116336469B CN202310586517.2A CN202310586517A CN116336469B CN 116336469 B CN116336469 B CN 116336469B CN 202310586517 A CN202310586517 A CN 202310586517A CN 116336469 B CN116336469 B CN 116336469B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 71
- 239000002737 fuel gas Substances 0.000 claims description 29
- 238000005452 bending Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 230000000670 limiting effect Effects 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 19
- 238000004891 communication Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 description 18
- 239000012535 impurity Substances 0.000 description 10
- 230000002829 reductive effect Effects 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/68—Treating the combustion air or gas, e.g. by filtering, or moistening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/70—Baffles or like flow-disturbing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
Abstract
The invention relates to the technical field of household appliances, in particular to a flow path system, a combustion heat exchange assembly and a gas water heater, wherein the flow path system comprises a primary air port, a secondary air port, an air inlet and a fan; the primary air port is communicated with the air inlet through a first communication channel; the secondary air port sequentially passes through the second flow channel and the air inlet to simultaneously align and communicate with the exhaust channel and the top wall plate; the secondary wind shield is covered on the secondary air port in a blocking way, and is provided with a first part in alignment communication with the top wall plate, and the first part is provided with a first air inlet hole for air to flow in; the spoiler comprises a first area aligned with the exhaust channel and a second area aligned with the top wall plate, wherein the second area is provided with a plurality of second flow disturbing holes. According to the preferred flow path system, the overall combustion heat exchange effect is improved by optimizing the air inlet structure of the secondary air port and balancing the air inlet uniformity of the fan assembly.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a flow path system, a combustion heat exchange assembly and a gas water heater.
Background
The gas water heater is the most convenient and economic device for quickly heating water at present, has high energy conversion efficiency, and saves more energy compared with an electric water heater.
The combustion heat exchange assembly shown in fig. 2 below is a main component of the gas water heater, and generally consists of a combustion heat exchange system and a gas supply assembly, wherein the combustion heat exchange system comprises a fan assembly, a heat exchange assembly and a burner assembly. For the updraft type combustion heat exchange system, the fan assembly is arranged above the burner assembly, and the burner assembly is connected with the fan assembly through the heat exchange assembly. When the burner assembly works, the burner assembly receives the fuel gas sprayed from the nozzle of the fuel gas supply assembly (comprising a transportation pipeline, a fuel gas distributor and the like) and burns, the high-temperature flue gas after burning flows out of the burner assembly under the attraction effect of the fan assembly, flows through the heat exchange assembly and realizes heat exchange with water to be heated, and then flows to the fan assembly and is discharged. The fan assembly not only guides the high-temperature flue gas after combustion, but also drives external air to enter the burner assembly from the fuel gas feeding port and the air ports at other positions to provide sufficient oxygen for combustion of fuel gas.
However, in actual use, the above-described system has a problem of poor combustion heat exchange effect.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a flow path system which is mainly used for guiding gas to flow in a combustion heat exchange assembly with a combustor and a fan assembly, and the overall combustion heat exchange effect is improved by optimizing the air inlet structure of a secondary air port and balancing the air inlet uniformity of the fan assembly.
Based on the above, a second object of the present invention is to provide a combustion heat exchange assembly having the above flow path system.
In view of the above, it is a third object of the present invention to provide a gas water heater having the above flow path system or the above combustion heat exchange assembly.
The technical solution of the invention is as follows:
a flow path system for directing gas flow in a combustion heat exchange assembly having a burner, a fan assembly, the flow path system comprising:
a primary air port into which combustion gas flows and which is provided in the burner;
a secondary air port into which combustion air flows, the secondary air port being provided in the burner;
an air inlet which is simultaneously communicated with an exhaust passage and a top wall plate arranged at one side of the exhaust passage;
The fan is communicated with the exhaust channel and conducts drainage exhaust on the exhaust channel;
the primary air port communicates with the air intake via a first flow path through the combustion zone and the heat exchange zone;
the secondary air port is communicated with the exhaust passage and the top wall plate in a contraposition mode through a second flow passage passing through the combustion area and the heat exchange area and the air inlet in sequence;
the secondary wind shield is covered on the secondary air port in a blocking mode, a first part in alignment communication with the top wall plate exists in the secondary wind shield, and a first air inlet hole for air to flow in is formed in the first area;
a spoiler disposed in the air intake and having a first region aligned with the exhaust passage and a second region aligned with the top wall plate;
the second region is provided with a plurality of second turbulence holes.
The above-mentioned scheme is directed against the burning heat transfer subassembly that the below figure 2 shows, and because burning heat transfer subassembly space restriction leads to needs sunken setting in order to vacate the installation space to the fan on the petticoat pipe casing, and then is formed with the top wall board that is located exhaust passage one side with crossing the exhaust direction.
Poor combustion heat transfer effect caused by the above arrangement occurs in two aspects:
the secondary air port is simultaneously communicated with the exhaust channel and the top wall plate in an alignment way. The part which leads to the communication between the secondary air port and the exhaust channel can smoothly introduce sufficient air from outside for combustion, and the part which leads to the communication between the secondary air port and the top wall plate in a counterpoint way is blocked by the top wall plate, so that the part can not smoothly introduce sufficient air from outside for combustion, and the air for combustion is unevenly distributed in the combustor to cause uneven combustion of fuel gas in the combustor, so that uniform heat exchange can not be realized; in particular, when the air introduction amount is small, partial region gas combustion is insufficient to generate toxic gas such as carbon monoxide.
Under the driving action of the fan, the gas can smoothly flow into and be discharged from the part of the gas inlet opposite to the gas discharge channel; the portion of the air inlet opposite to the top wall plate, the air flow introduced by the air inlet is blocked by the top wall plate, and the flow of the air is slowed down by blocking; the problem of uneven drainage of the fan assembly is caused, so that air flow cannot uniformly flow in the combustion heat exchange assembly, and uniform heat exchange cannot be realized.
Based on the two factors, the scheme of the invention comprises the following steps:
on one hand, a secondary wind shield for blocking air from flowing from the secondary air port is arranged, a first air inlet hole for air to flow in is formed in the secondary wind shield, the first air inlet hole is communicated with the top wall plate in an alignment mode, and the first air inlet hole and the exhaust channel are arranged in a dislocation mode; thus, the air is driven to flow into the burner from the part of the secondary air port, which is in para-position communication with the top wall plate, and then the fan is used for guiding part of the air sucked from the first air inlet to the part of the secondary air port, which is in para-position communication with the exhaust channel, through the suction of the exhaust channel, so that the air flow of the part of the secondary air port, which is in para-position communication with the top wall plate, can be increased to a certain extent, the air flow of the part of the secondary air port, which is in para-position communication with the exhaust channel, is reduced, the air flow distribution in the burner is more uniform, and the uniformity of gas combustion in the burner is improved.
On the other hand, aiming at the airflow flowing environment in the fan, a spoiler is additionally arranged in the air inlet, the spoiler is provided with a first area and a second area which obstruct airflow, and a second disturbing hole is arranged in the second area, so that when the air inlet airflow of the opposite part of the air inlet and the top wall plate is not influenced as much as possible, the flow speed of the air inlet airflow of the opposite part of the air inlet and the air outlet channel is reduced, and the uniformity of the integral air inlet of the fan assembly is realized. Meanwhile, the structure of the plurality of turbulent holes is adopted, the airflow flowing through the turbulent plates can be filtered, part of impurities in the airflow are screened and filtered, the part of filtered impurities are prevented from being carried out in the fan along with the airflow from the exhaust channel, and further the influence on the operation and the service life of the fan is avoided.
Further preferably, the first area is provided with a plurality of first disturbing holes, and the aperture of the second disturbing holes is larger than that of the first disturbing holes.
And then realize through optimizing the air inlet structure of secondary air mouth and balance fan subassembly homogeneity of admitting air to promote holistic burning heat transfer's homogeneity, promote holistic burning heat transfer effect.
Further preferably, the secondary wind deflector cover is arranged on the air inlet side of the secondary air port.
Further preferably, the secondary wind shield is mounted to a burner housing of the burner.
Further preferably, the secondary wind shield is fixedly connected to the burner housing through a plurality of connecting pieces.
Further preferably, the secondary wind shield has a plurality of mounting holes through which the connecting pieces are inserted.
Further preferably, a limiting part is arranged at one end of the secondary wind deflector.
Further preferably, the limit part is abutted against the side wall of the burner housing.
Further preferably, the flow path system further comprises a filter screen member, wherein the filter screen member has a portion covering the first air inlet hole, and the portion is provided with a plurality of filter holes for screening and filtering the air flow entering the first air inlet hole.
Further preferably, the first part is provided with a plurality of first air inlet holes for air to flow in and for screening and filtering the flowing air.
Further preferably, the secondary air deflector further comprises a second portion spaced from or adjacent to the first portion, the second portion being in opposed relation to the secondary air port;
the second part is provided with a plurality of second air inlet holes for air to flow in and screening and filtering the flowing air, and the aperture of the second air inlet holes is smaller than that of the first air inlet holes.
Further preferably, the spoiler comprises a first end and a second end;
the spoiler is connected to the smoke hood shell through a first connecting part arranged at the first end and/or a second connecting part arranged at the second end.
Further preferably, a space exists between the first end and the inner wall of the air inlet, and/or a space exists between the second end and the inner wall of the air inlet.
Further preferably, the spoiler further comprises a third end and a fourth end;
a space exists between the third end and the inner wall of the air inlet, and/or a space exists between the fourth end and the inner wall of the air inlet.
Further preferably, the third end is formed with a first flanging part in a bending manner and/or the fourth end is formed with a second flanging part in a bending manner.
Further preferably, the first flange portion and/or the second flange portion is oriented in a gas outflow direction.
Further preferably, the outer surface of the bending part of the first flanging part and/or the outer surface of the bending part of the second flanging part is arc-shaped.
Further preferably, a plurality of the spoilers are provided, and the plurality of spoilers are provided in the gas inlet at intervals in the gas inflow direction.
Preferably, the primary air port is provided in the burner so as to be aligned with a nozzle for injecting fuel gas at a distance from the nozzle.
Further preferably, the flow path system further includes:
and a primary air deflector having a wind deflector portion located on one side of a space between the primary air port and the nozzle and at least partially shielding the space from the one side.
Further preferably, one end of the wind shielding part is connected with the burner, and a channel for air circulation is arranged between the other end of the wind shielding part and the fuel gas supply assembly.
Further preferably, an end portion of the wind shielding portion has a portion aligned with the nozzle at an interval in the covering direction.
Further preferably, a portion of the wind shielding portion that contacts the burner is adjacent to the primary air port.
Further preferably, the primary air deflector is connected to a burner housing of the burner.
A combustion heat exchange assembly comprising a flow path system as described in any one of the preceding aspects.
A gas water heater comprising a flow system as described in any one of the above aspects, or comprising a combustion heat exchange assembly as described above.
The technical scheme has the main beneficial effects that:
through setting up the secondary deep bead that separation air was circulated from secondary air mouth to be equipped with the first inlet port that supplies the air inflow at the secondary deep bead, order about the whole part that is located the intercommunication from secondary air mouth and roof board to flow into the combustor and then disperse, increase the air flow of the part that secondary air mouth and roof board are located the intercommunication to a certain extent, reduce the air flow of the part that secondary air mouth and exhaust passage are located the intercommunication, make the air flow distribution more even in the combustor, with the homogeneity that improves the combustor and have the gas burning. Thereby optimizing the combustion effect of the burner in the flow path system. The spoiler is additionally arranged in the air inlet, a first area and a second area for obstructing the air flow are formed in the spoiler, a second disturbing hole is formed in the second area, and then when the air inlet and the air inlet flow of the opposite part of the top wall plate are not influenced as much as possible, the flow speed of the air inlet and the air inlet flow of the opposite part of the air outlet channel is reduced, the uniformity of the whole air inlet of the fan assembly is balanced, the uniformity of the air flowing in the flow path system can be improved, and the whole heat exchange effect is optimized.
Further or more detailed benefits will be described in connection with specific embodiments.
Drawings
The invention is further described with reference to the accompanying drawings:
fig. 1 is a schematic view of a flow path system.
FIG. 2 is a schematic diagram of a prior art combustion heat exchange assembly.
Fig. 3 is a schematic view of the intake of the primary air port and the secondary air port in the conventional burner.
Fig. 4 is a schematic view of the installation of the primary and secondary windshields.
FIG. 5 is a schematic view of the intake of secondary air ports after installation of a secondary air deflector.
Fig. 6 is a schematic view of the installation of a structural secondary wind deflector.
Fig. 7 is a second schematic view of the installation of a structural secondary wind deflector.
Fig. 8 is an enlarged schematic view of a structure of the portion X in fig. 4.
Fig. 9 is an enlarged schematic view of another structure of the X portion of fig. 4.
Fig. 10 is a schematic diagram of a screen assembly.
FIG. 11 is a schematic view of the installation of a secondary wind deflector of another construction.
Fig. 12 is a schematic view illustrating installation of a secondary wind deflector of a third structure.
FIG. 13 is a schematic view of a spoiler installation.
FIG. 14 is a schematic bottom view of a spoiler installation.
FIG. 15 is a second view of spoiler installation.
Fig. 16 is a schematic view of a spoiler structure.
FIG. 17 is a schematic diagram of a gas water heater.
The figure shows: a bottom case a, a burner b, a burner case b1, a primary air port b11, a secondary air port b12, a wind deflector mounting portion b121, a discharge port b13, a primary wind deflector b2, a wind deflector b21, a drainage hole b211, a mounting portion b22, a fire row b3, a feed passage b31, a secondary wind deflector b4, a first air intake b41, a mounting hole b42, a limiting portion b43, a second air intake b44, a connector b5, a screen member b6, a filter hole b601, a screen member retention hole b602, a fan assembly c, a hood case c1, an exhaust passage c11, a top wall plate c12, an air inlet c13, a fan c2, a discharge cone c21, a spoiler c3, a first drain hole c31, a second drain hole c32, a first end c33, a first connector c331, a second end c34, a second connector c341, a third end c35, a first flange c351, a fourth flange c36, a second flange c, a heat exchange assembly d, a heat exchange flow passage d1, a heat exchange flow passage e1, a nozzle e1;
flame 1, primary air intake flow arrow 1, secondary air intake flow arrow 3, primary air intake flow arrow second 4, primary air intake flow arrow third 5.
Detailed Description
The invention is illustrated by the following examples in which:
embodiment one:
A flow path system directs gas flow in a combustion heat exchange assembly having a burner b, a fan assembly c.
The combustion heat exchange assembly, shown in fig. 2, is an important component part of the gas water heater, and mainly comprises a combustion heat exchange system and a gas supply assembly e, wherein the combustion heat exchange system and the gas supply assembly e are installed on a bottom shell a of the gas water heater.
For a combustion heat exchange system, as shown in fig. 2, it mainly includes a burner b, a fan assembly c and a heat exchange assembly d.
Specifically, as shown in fig. 2 and fig. 3, the fan assembly c is disposed above the burner b, and the fan assembly c is communicated with the burner b through the heat exchange assembly d, so that the fan assembly c can form negative pressure and pump up high-temperature gas formed after combustion of fuel gas in the burner b through a channel inside the heat exchange assembly d.
As shown in fig. 3, the burner b in the present embodiment includes a burner housing b1, a primary air port b11 for inputting fuel is provided on the right side of the burner housing b1, a discharge port b13 for discharging high temperature gas after combustion and communicating with the heat exchange assembly d is provided on the upper end, and a secondary air port b12 for entering air is provided on the lower end; a plurality of fire rows b3 are arranged in the burner shell b1 at intervals, each fire row b3 is provided with a feeding channel b31, one end of each feeding channel b31 is communicated with the primary air port b11, and the other end of each feeding channel b31 is communicated with the row through port b13 in an alignment manner; the secondary air port b12 communicates up and down with the discharge port b13 through the gap space between the fire rows b3, so that air can enter from the secondary air port b12 and be discharged into the discharge port b 13.
As for the gas supply assembly e, as shown in fig. 2 and 3, it mainly includes a pipe for transporting gas and a nozzle e1 connected to an end of the pipe for injecting gas.
Of course, in some gas water heaters, the gas supply assembly e may further include a gas proportional valve connected in the pipe to adjust the size of the gas, and a gas distributor to distribute the gas.
Specifically, as shown in fig. 3, the nozzle e1 and the primary air port b11 are arranged in a staggered manner, so that the nozzle e1 sprays fuel gas into the primary air port b11 and simultaneously can take up air into the burner b, thereby realizing premixing of the fuel gas and the air before combustion and improving the combustion effect.
As shown in fig. 2, the fan assembly c in the present embodiment includes a hood housing c1, and a fan c2.
The space limitation based on the combustion heat exchange assembly results in the need for a recessed arrangement on the hood housing c1 to free up installation space for the fan c2, resulting in the hood housing c1 comprising an exhaust channel c11 for exhaust air, and a top wall plate c12 located on one side of the exhaust channel c11 intersecting the exhaust air direction.
It should be noted that, as shown in fig. 2, the top wall plate c12 in this embodiment may be a part of the hood casing c 1; alternatively, the top wall panel c12 may be part of any other structure where it is desired to form other arrangements, but positioned to provide a non-uniform flow of air in a manner similar to the flow obstruction shown in fig. 2. When it is desired to fit the fan c2 entirely within the hood housing c1, for example, a portion of the housing structure of the fan c2 forms a top wall panel c12 such as that shown in fig. 2.
For example, as shown in fig. 2, the air inlet c13 of the fan assembly c is in aligned communication with the exhaust port b13 of the burner b through the heat exchange flow path d1; when the interior of the combustion heat exchange assembly is exhausted upward, the top wall plate c12 is arranged to extend transversely and is positioned to the right of the exhaust passage c11, and the fan c2 for providing suction to the exhaust passage c11 is disposed above the top wall plate c 12. Of course, depending on the actual requirements, other required components may be installed at the position of the fan c2 shown in fig. 2, and the fan c2 may be placed elsewhere.
The fan c2 in this embodiment preferably includes: a rotary motor, and an impeller coupled to the rotary motor. The impeller is arranged in a shell with one end communicated with the exhaust channel c11 and the other end communicated with the exhaust cylinder c21, and the impeller is driven to rotate in the shell with constant volume by the rotating motor so as to introduce air flow from the exhaust channel c11 into the exhaust cylinder c21 for discharge.
In the combustion heat exchange assembly, the primary air port b11 and the secondary air port b12 are used as air inlets and are main components of a flow path system; wherein:
the primary air port b11 communicates with the exhaust passage c11 for exhaust gas in the hood case c1 through a first flow passage passing through a combustion zone (for example, a zone where the exhaust port b13 of the burner case b1 is located for igniting and burning fuel gas) and a heat exchanging zone (for example, a zone where the heat exchanging flow passage d1 is located for exchanging heat with an external medium in the heat exchanging assembly d), and in this embodiment, the first flow passage includes a feed passage b31 of the fire exhaust b3, the exhaust port b13, and the heat exchanging flow passage d1 in this order; the suction action of the fan c2 is transmitted to the primary air outlet b11 through the exhaust passage c11, the air inlet c13, the heat exchange flow path d1, the exhaust port b13, and the feed passage b31 in this order, so that the injected fuel gas and the air sucked by the fuel gas are introduced into the primary air outlet b11.
The secondary air port b12 communicates with the exhaust passage c11 and the top wall plate c12 simultaneously through a second flow passage passing through the combustion zone (for example, a zone where the discharge port b13 of the burner housing b1 is located for igniting and burning the fuel gas) and the heat exchanging zone (for example, a zone where the heat exchanging flow passage d1 is located for exchanging heat with an external medium in the heat exchanging assembly d), and in this embodiment, the second flow passage includes a gap between the fire rows b3, the discharge port b13, and the heat exchanging flow passage d1 in this order.
As shown in fig. 2, the secondary air port b12 is in alignment communication with the exhaust passage c11 and the top wall plate c12 located above through the second flow passage and the air inlet c 13; wherein in aligned communication with the top wall plate c12 means that a side of the top wall plate c12, such as the lower end of the top wall plate c12 in fig. 2, is in direct flow communication with the secondary air port b 12.
During operation, part of air is sucked by the fuel gas and enters the feeding channel b31 of the fire row b3 from the primary air port b11, flows through the feeding channel b31 and is discharged into the cavity where the row through port b13 is positioned for ignition combustion; the other part of air is discharged from the secondary air port b12 to the cavity where the discharge port b13 is located through the gap between the fire rows b3 for combustion of fuel gas. High-temperature gas is formed after combustion, is pumped to the heat exchange assembly d from the exhaust port b13 under the negative pressure effect formed by the fan assembly c, flows to the fan assembly c after passing through the heat exchange flow passage d1 of the heat exchange assembly d, and is exhausted from the exhaust funnel c 21. As shown in fig. 2, the heat exchange flow channel d1 is a gas flow channel which is arranged in the heat exchange component d and is communicated with the air blower component c from top to bottom and is used for discharging high-temperature gas formed by burning the burner b, and a side wall of the heat exchange flow channel d1 or a pipeline used for circulating cold water is arranged in the heat exchange flow channel d1, so that the high-temperature air flowing through the heat exchange flow channel d1 can exchange heat for the cold water to drive the cold water to rise in temperature.
Practical experiments and use find that the use of the above-mentioned flow path system to guide the flow of fuel gas and combustion air results in a problem of poor combustion heat exchange effect, which has two main aspects:
the secondary air port b12 is communicated with the exhaust channel c11, so that sufficient air can be smoothly introduced from outside for combustion, and the introduced air flow of the secondary air port b12 is blocked by the top wall plate c12 at the position communicated with the top wall plate c12, so that sufficient air cannot be smoothly introduced from outside for combustion at the position, and the air for combustion is unevenly distributed in the combustor b, so that the problem of uneven combustion of fuel gas in the combustor b is solved.
Under the suction effect of the fan c2, the gas guided from the air inlet c13 enters, part of the gas flows to the part of the air inlet c13 opposite to the exhaust channel c11, directly flows into the exhaust channel c11, and finally flows out of the exhaust barrel c21 of the fan c 2; part of the flow flows to the portion of the air inlet c13 opposite to the top wall plate c12, is blocked by the top wall plate c12, and then flows into the exhaust passage c11, and finally flows out of the exhaust funnel c21 of the fan c 2. The portion of the gas inlet c13 opposite to the gas outlet channel c11 is caused to smoothly flow in and out; the portion of the inlet c13 opposite the top wall plate c12, the flow of the introduced gas is blocked by the top wall plate c12, and the flow of the gas is slowed down by blocking; and then cause fan subassembly c itself to have the uneven problem of drainage, and then make flow path system have the uneven problem of gas.
The two problems comprehensively influence the combustion heat exchange effect.
Based on this, in this embodiment, as shown in fig. 1, a secondary wind deflector b4 and a spoiler assembly are added.
For secondary wind deflector b4:
as shown in fig. 4, 6 and 7, the secondary air deflector b4 is covered on the secondary air port b12 to block air flow, and the secondary air deflector b4 has a first portion in alignment with the top wall plate c12, and the first portion is provided with a first air inlet b41 into which air flows.
Wherein, the first air inlet b41 may be a large hole as shown in fig. 6, and the area of the large hole is set to be suitable for the area of the top wall plate c 12; or as shown in fig. 11, the first air inlet holes b41 are small holes, and by arranging a plurality of first air inlet holes b41 in the first part, air can flow in, air flow entering from the air inlet holes can be filtered and screened, and impurities with large particles are filtered, so that the influence of the impurities on combustion is avoided, and the stability of integral combustion is improved.
In this way, the outside air is forced to flow into the burner b as indicated by the arrow in fig. 5. Specifically, the air is driven to flow into the burner b from the part of the secondary air port b12 in alignment with the top wall plate c12, and then the fan c2 draws part of the air drawn from the first air inlet b41 through the exhaust channel c11 to flow to the part of the secondary air port b12 in communication with the exhaust channel c11, so that the air flow of the part of the secondary air port b12 in alignment with the top wall plate c12 can be increased to a certain extent, the air flow of the part of the secondary air port b12 in communication with the exhaust channel c11 can be reduced, the air flow distribution in the burner b can be more uniform, and the uniformity of gas combustion of the burner b can be improved.
The secondary air deflector b4 may be disposed inside the burner housing b1 to cover the secondary air port b12 from the air outlet side of the secondary air port b12, but has a problem of difficulty in installation.
In order to facilitate the capping operation and to better block air from entering the secondary air port b12, the secondary air deflector b4 in this embodiment is capped on the air inlet side of the secondary air port b12, for example, as shown in fig. 4, 6 and 7, and the secondary air deflector b4 is capped on the secondary air port b12 from the lower end.
Of course, the secondary wind deflector b4 may be mounted to the burner housing b1 or may be mounted to an external support structure, such as the bottom case a described above, only by performing a cover mounting function.
In this embodiment, as shown in fig. 4 and 7, the secondary wind deflector b4 is mounted on the burner housing b1 of the burner b, so that not only is the installation convenient, but also the secondary wind deflector b4 can be better attached to the burner housing b1 to better cover the secondary air port b12.
The secondary wind shield b4 is preferably detachably mounted on the burner housing b1 by means of a structure such as a screw, a pin, a buckle, etc., so that the secondary wind shield b4 can be conveniently maintained and replaced.
Considering the convenience requirement of disassembly and the stability requirement of installation; as shown in fig. 6 and 7, in the present embodiment, the secondary wind deflector b4 is fixedly connected to the burner housing b1 by a plurality of connectors b5, preferably connecting screws, and a plurality of mounting holes b42 are provided in the secondary wind deflector b4 for inserting the connectors b 5.
Two side walls of the secondary air port b12 are respectively provided with a wind shield installation part b121 for installing the secondary wind shield b4, the wind shield installation part b121 is provided with a hole site for the connection of the connecting piece b5 in a threaded mode, and the wind shield installation part b121 is provided with a part for adapting to the secondary wind shield b 4. So that the secondary wind deflector b4 can be more firmly coupled to the burner b.
Further, considering that the mounting hole b42 on the secondary wind deflector b4 is easy to deviate from the hole site on the burner housing b1 for the connection part b5 to be screwed, the problem that the mounting cannot be carried out is solved, and part of the mounting hole b42 is formed into a waist-shaped hole, so that the precision requirement of punching operation on the mounting hole b42 on the secondary wind deflector b4 during production can be reduced, and the secondary wind deflector b4 is convenient to mount.
As shown in fig. 4 and 6, a limiting portion b43 is provided at one end of the secondary wind deflector b4, and the limiting portion b43 abuts against the side wall of the burner housing b1, so that the secondary wind deflector b4 can be positioned in advance during installation.
As a further development, it is preferable to be able to filter the air entering the burner b, in particular the secondary air port b12 as the main air inlet, considering that the burner b burns if external impurities enter, which not only cause an obstacle to the combustion, but also easily form some toxic gases.
When the first air intake hole b41 is a large hole as shown in fig. 6, it is considered that impurities enter the burner b with the air flow from the air intake hole b41 to cause unstable influence on combustion, particularly for the air intake hole b41 as the main inlet of air.
As shown in fig. 10, a screen member b6 is provided, which has a portion covering the first air intake hole b41, and which is provided with a plurality of screen holes b601 for screening and filtering the air flow entering the first air intake hole b 41. The air flow entering from the first air inlet hole b41 is filtered and screened, some large-particle impurities are filtered, the blocking influence of the impurities on combustion is avoided, and the stability of integral combustion is improved.
At this time, the screen member b6 and the wind deflector b4 may be integrally formed, and the wind deflector b4, that is, the screen member b6 may be mounted without requiring a secondary mounting operation. When the screen member b6 and the wind deflector b4 may be formed in one body, the screen member b6 serves as a part of the wind deflector b4.
The filter screen member b6 and the wind deflector b4 may be connected separately, and in order to facilitate the replacement and cleaning of the filter screen member b6 which is easy to be polluted and blocked, it is preferable that the filter screen member b6 is detachably mounted on the wind deflector b4 by using a screw.
Additional to be described is: with the first air intake holes b41 provided in the first portion, as shown in fig. 11, the air intake amount of the whole is attenuated to some extent.
Therefore, in this embodiment, an additional intake passage may be provided in the secondary air deflector b 4.
As shown in fig. 4, the secondary air deflector b4 further includes a second portion spaced from or disposed adjacent to the first portion, the second portion being in opposed relation to the secondary air port b 12; and the second part is provided with a plurality of second air inlet holes b44 for air to flow in and sieving and filtering the flowing air, and the aperture of the second air inlet holes b44 is smaller than that of the first air inlet holes b 41.
By such arrangement, on the one hand, the air inlet passage on the secondary air deflector b4 can be increased, and on the other hand, since the aperture of the second air inlet hole b44 is smaller than that of the first air inlet hole b41, the second part of the air deflector b4 is prevented from flowing into the burner b more than the first part, so that most of the air can still flow into the burner b from the part of the secondary air port b12 which is in alignment with the top wall plate c12, and then the fan c2 draws in through the air outlet passage c11 to guide part of the air drawn in from the first air inlet hole b41 to the part of the secondary air port b12 which is in communication with the air outlet passage c11, thereby achieving the purpose of more uniform air flow distribution in the burner b.
For spoiler assemblies:
The spoiler c3 may be configured as a straight plate, a curved plate, a plate structure of other shapes, etc. according to actual needs.
Specifically, as shown in fig. 1, 13 and 14, the spoiler c3 is disposed in the air intake opening c13, and has a first region aligned with the exhaust passage c11 and a second region aligned with the top wall plate c 12. Wherein the second zone is provided with a number of second baffle holes c32 enabling the flow of air from the air inlet c13 to the top wall plate c 12.
By additionally arranging the spoiler c3 in the air inlet c13, the spoiler c3 has a first area and a second area for obstructing the air flow, and the second area is provided with the second disturbing hole c32, so that when the air inlet flow of the part, opposite to the top wall plate c12, of the air inlet c13 is not influenced as much as possible, the flow speed of the air inlet flow of the part, opposite to the exhaust channel c11, of the air inlet c13 is reduced, and the uniformity of the whole air inlet of the fan assembly is balanced.
When the spoiler c3 is large in size, the intake air flow of the portion of the intake port c13 opposite to the exhaust passage c11 does not flow well.
As shown in fig. 1, a plurality of first flow disturbing holes c31 are provided in the first region to enable the air flow from the air inlet c13 to the air discharge passage c 11; and the aperture of the second disturbance hole c32 is larger than that of the first disturbance hole c 31.
In this way, for the airflow flowing environment in the fan c2, the spoiler c3 with different aperture disturbing holes is additionally arranged in the air inlet c13, and the aperture of the first disturbing hole c31 aligned with the exhaust channel c11 is smaller than that of the second disturbing hole c32 aligned with the top wall plate, so that different slowing actions on airflow flowing through different apertures are realized: the flow weakening degree of the inlet air flow on the part of the inlet c13 opposite to the exhaust passage c11 is larger than that of the inlet air flow on the part of the inlet c13 opposite to the top wall plate, so that the uniformity of the whole inlet air of the fan c2 assembly c is balanced.
Meanwhile, a plurality of turbulent hole structures are adopted, the air flow flowing through the turbulent plate c3 can be filtered, part of impurities in the air flow are screened and filtered, the part of filtered impurities are prevented from being carried out in the fan c2 along with the air flow from the exhaust channel c11, and further the influence on the operation and the service life of the fan c2 is avoided.
At this time, the fan assembly c is applied to other systems or assemblies, for example, the fan assembly c is used in a combustion heat exchange assembly of a gas water heater, so that high-temperature gas formed after the combustion of the burner b in the combustion heat exchange assembly can be uniformly drained, the high-temperature gas formed after the combustion of the burner b can more uniformly flow through the heat exchange assembly d, and the overall heat exchange effect is optimized.
Further, as shown in fig. 14 and 16, the spoiler c3 includes a first end c33 and a second end c34 located in the left-right direction of the spoiler c 3; and the spoiler c3 is connected to the hood housing c1 through a first connecting portion c331 provided at the first end c33 and/or a second connecting portion c341 provided at the second end c 34.
In this embodiment, the first connecting portion c331 is a bent structure disposed at the first end c33, the second connecting portion c341 is a bent structure disposed at the second end c34, and the first connecting portion c331 is preferably detachably fixed to the left side of the hood casing c1 by a screw, and the second connecting portion c341 is detachably fixed to the right side of the hood casing c1 by a screw.
Meanwhile, in order to avoid that the first end c33 and the second end c34 are connected with the inner wall of the smoke cover shell c1, air flows into a connected gap to generate vortex, and the air flows are disturbed. In this embodiment, it is preferable that there is a space between the first end c33 and the inner wall of the air inlet c13, and/or a space between the second end c34 and the inner wall of the air inlet c 13.
As shown in fig. 14 and 16, the spoiler c3 further includes a third end c35 and a fourth end c36 in other directions.
Similarly, to avoid the production of vortex flow, it is preferable that there is a space between the third end c35 and the inner wall of the intake port c13, and/or a space between the fourth end c36 and the inner wall of the intake port c 13.
Further, as shown in fig. 16, the third end c35 is formed with a first burring part c351 and/or the fourth end c36 is formed with a second burring part c361; so as to enhance the strength of the spoiler c3 and reduce the possibility of shaking the spoiler c3 caused by the impact of air flow.
As shown in fig. 16, the first flange portion c351 and/or the second flange portion c361 are oriented in the gas outflow direction, so that the possibility of vortex generation caused by the impact of the gas flow into the gap of the flange is reduced.
As shown in fig. 16, the outer surface of the bent portion of the first burring part c351 and/or the outer surface of the bent portion of the second burring part c361 are arc-shaped; the airflow flowing to the outer surface of the flanging part can be smoothly guided, and vortex caused by the impact of the airflow on the outer surface of the edge angle structure of the flanging part is avoided.
Of course, on the basis of the above, in order to enable formation of the multilayer filtering turbulent flow, a plurality of turbulent flow plates c3 may be provided, and the plurality of turbulent flow plates c3 may be provided in the gas inlet c13 at intervals in the gas inflow direction.
When through setting up secondary deep bead b4, make the air can more evenly distribute in flow system, can make the burning more even, and then produce more even high temperature flue gas, simultaneously under the setting of vortex subassembly, make fan assembly c's even appeal be difficult for producing the influence of broken homogeneity to above-mentioned even high temperature flue gas that flows, make high temperature flue gas can evenly flow and realize balanced burning heat transfer effect in flow system.
In addition to the above-mentioned two problems, as shown in fig. 2 and 3, because the nozzle e1 is aligned with the primary air port b11 at a distance, the nozzle e1 injects fuel gas into the primary air port b11 and simultaneously can mix the fuel gas with air before entering the burner b to achieve combustion, so as to improve the combustion effect, there is a problem that the combustion effect is affected and then the heat exchange effect is affected, namely:
the negative pressure formed by the fan assembly c can suck fuel through the feeding channel b31 and the primary air port b11, so that the feeding of fuel gas is optimized; at the same time, the air is sucked through the primary air port b11 to form an intake air flow, and these air flow portions easily flow between the primary air port b11 and the nozzle e1 in a direction perpendicular to the gas injection direction. For example, in the updraft type combustion heat exchange system shown in fig. 2, the nozzle e1 sprays fuel gas to the left to the primary air port b11, and under the upward suction action of the fan assembly c, upward flowing air flows as shown by the primary air inlet flow arrow one 2 in fig. 3 are mainly formed, and the upward flowing air flows easily form shearing force on the fuel gas sprayed by the nozzle e1, so that the impact on the fuel gas spraying is caused, and the fuel gas feeding is unstable, so that the problem of unstable fuel gas combustion is caused.
Therefore, in this embodiment, as shown in fig. 4, 6 and 7, a primary wind deflector b2 is additionally added.
For primary wind deflector b2:
as shown in fig. 4, the primary air deflector b2 has a wind deflector b21 located on one side of the space between the primary air port b11 and the nozzle e1, and at least partially shields the space from this side. In the updraft type combustion heat exchange system shown in fig. 2, the primary air shield b2 is provided with a wind shielding portion b21 which is located below the interval between the primary air port b11 and the nozzle e1 and at least partially shields the interval from below.
In this way, air can be prevented from flowing between the primary air port b11 and the nozzle e1 along the direction perpendicular to the gas injection direction, so that the shearing force of the air on the injection of the gas from the nozzle e1 is effectively weakened, the impact on the gas injection is slowed down, the gas can be more stably input into the burner b from the primary air port b11, and the combustion stability of the gas in the burner b is improved.
The primary air deflector b2 may be mounted on the burner housing b1, the gas supply assembly e, or the bottom case a.
In this embodiment, the primary wind deflector b2 is preferably attached to the burner housing b1, and the primary wind deflector b2 can be preferably connected to the burner housing b 1.
Because the suction effect of the blower assembly c is stronger closer to the primary air port b11, the more easily an air flow having a shearing force on the gas jet is formed.
As shown in fig. 4 and 8, the left end of the wind shielding part b21 is preferably connected with the burner b to better block the strong airflow near the burner housing b 1; and a channel for air flow is reserved between the right end of the wind shielding part b21 and the gas supply assembly e, so that air flow can flow into the primary air port b11 in the direction of a primary air inlet flow arrow two 4 in fig. 4 to be premixed with gas, and shearing force influence on the gas sprayed by the nozzle e1 is not easy to be formed.
At this time, the end of the wind shielding portion b21 is preferably located at a position spaced apart from the nozzle e1 in the covering direction.
For example, as shown in fig. 8, it is preferable that the right end of the wind shielding portion b21 has a portion vertically aligned with the nozzle e1, that is, the wind shielding portion b21 can completely shield the space between the primary air port b11 and the nozzle e1 from below, so as to form a larger blocking area, and prevent the air flow from flowing vertically upward between the primary air port b11 and the nozzle e 1.
Meanwhile, it is preferable that the portion where the wind shielding portion b21 contacts the burner b is close to the primary air port b11.
For example, as shown in fig. 4, the portion where the left end of the wind shielding portion b21 meets the burner b is close to the lower end portion of the primary air port b11, so that the air flow does not easily flow vertically upward between the primary air port b11 and the nozzle e1 when bypassing the wind shielding portion b21, but easily flows laterally into the primary air port b11 by the suction of the fan assembly c.
As shown in fig. 6 and fig. 7, a mounting part b22 is arranged at one end of the wind shielding part b21 close to the burner housing b1, the mounting part b22 is adapted to the outer side surface of the burner housing b1, and the wind shielding part b21 is fixedly connected with the burner housing b1 through the mounting part b22, so that the wind shielding part b21 can keep a stable state to realize blocking of air flow.
Further, it is preferable that the wind shielding portion b21 is integrally formed with the mounting portion b22, and for example, as shown in fig. 6 and 7, the mounting portion b22 is formed by bending a left end of the wind shielding portion b21 and is bonded to a left side surface of the burner housing b 1.
Meanwhile, the mounting part b22 is detachably connected to the burner housing b1 by adopting screws, pins and the like, so that the primary wind shield b2 can be conveniently detached and replaced.
As a further development, when it is necessary to increase the air intake amount of the primary air port b11, as shown in fig. 9, a guide hole b211 extending obliquely may be additionally provided in the wind shielding portion b21, which guides the air flow below the wind shielding portion b21 to approach the lateral flow into the primary air port b11 along the guide hole b 211.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the scope of the invention. In addition, references to the terms "vertical", "horizontal", "front", "rear", etc., in the embodiments of the present invention indicate that the apparatus or element in question has been put into practice, based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product is conventionally put in use, merely for convenience of description and to simplify the description, but do not indicate or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. It should be further noted that, unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," and the like in the description are to be construed broadly as, for example, "connected," either permanently connected, detachably connected, or integrally connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. The invention will be described in detail below with reference to the drawings in connection with embodiments.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (26)
1. A flow path system for directing gas flow in a combustion heat exchange assembly having a burner (b), a fan assembly (c), the flow path system comprising:
a primary air port (b 11) into which combustion gas flows and which is provided in the burner (b);
a secondary air port (b 12) into which combustion air flows and which is provided in the burner (b);
an air inlet (c 13) which is simultaneously connected with an exhaust passage (c 11) and a top wall plate (c 12) arranged at one side of the exhaust passage (c 11);
a fan (c 2) which is communicated with the exhaust passage (c 11) and guides and exhausts the exhaust passage (c 11);
the primary air port (b 11) communicates with the air inlet (c 13) through a first flow passage for receiving the gas from the primary air port (b 11) and flowing through the combustion zone and the heat exchange zone;
The secondary air port (b 12) sequentially passes through a second flow passage for receiving air from the secondary air port (b 12) and flowing through a combustion zone and a heat exchange zone, and the air inlet (c 13) to simultaneously align the exhaust passage (c 11) and the top wall plate (c 12);
a secondary wind deflector (b 4) which is covered on the secondary air port (b 12) in a way of blocking air circulation, wherein the secondary wind deflector (b 4) is provided with a first part which is communicated with the top wall plate (c 12) in a contraposition way and is provided with a first air inlet hole (b 41) for air to flow in;
a spoiler (c 3) provided in the intake port (c 13) and having a first region aligned with the exhaust duct (c 11) and a second region aligned with the top wall plate (c 12);
the second region is provided with a number of second disturbance apertures (c 32).
2. The flow path system according to claim 1, wherein: the first area is provided with a plurality of first disturbing holes (c 31), and the aperture of the second disturbing holes (c 32) is larger than that of the first disturbing holes (c 31).
3. The flow path system according to claim 1, wherein: the secondary wind shield (b 4) is covered on the air inlet side of the secondary air port (b 12).
4. The flow path system according to claim 1, wherein: the secondary wind deflector (b 4) is mounted to a burner housing (b 1) of the burner (b).
5. The flow path system according to claim 4, wherein: the secondary wind shield (b 4) is fixedly connected with the burner shell (b 1) through a plurality of connecting pieces (b 5).
6. The flow path system according to claim 5, wherein: the secondary wind shield (b 4) is provided with a plurality of mounting holes (b 42) for the connecting pieces (b 5) to penetrate through.
7. The flow path system according to claim 4, wherein: one end of the secondary wind deflector (b 4) is provided with a limiting part (b 43).
8. The flow path system according to claim 7, wherein: the limit part (b 43) is abutted against the side wall of the burner housing (b 1).
9. The flow path system according to claim 1, wherein: the flow path system further comprises a sieve element (b 6) which has a portion covering the first air inlet hole (b 41) and is provided with a plurality of sieve holes (b 601) for sieving and filtering the air flow entering the first air inlet hole (b 41).
10. The flow path system according to claim 1, wherein: the first part is provided with a plurality of first air inlet holes (b 41) for air to flow in and sieving and filtering the flowing air.
11. The flow path system according to claim 10, wherein: the secondary air deflector (b 4) further comprises a second portion spaced from or adjacent to the first portion, the second portion being opposite the secondary air port (b 12);
and the second part is provided with a plurality of second air inlet holes (b 44) for air to flow in and sieving and filtering the flowing air, and the aperture of the second air inlet holes (b 44) is smaller than that of the first air inlet holes (b 41).
12. The flow path system according to claim 1, wherein: the spoiler (c 3) comprises a first end (c 33) and a second end (c 34);
the spoiler (c 3) is connected to the hood housing (c 1) via a first connection (c 331) provided at the first end (c 33) and/or a second connection (c 341) provided at the second end (c 34).
13. The flow path system according to claim 12, wherein: a space exists between the first end (c 33) and the inner wall of the air inlet (c 13), and/or a space exists between the second end (c 34) and the inner wall of the air inlet (c 13).
14. The flow path system according to claim 1, wherein: the spoiler (c 3) further comprises a third end (c 35) and a fourth end (c 36);
a space exists between the third end (c 35) and the inner wall of the air inlet (c 13), and/or a space exists between the fourth end (c 36) and the inner wall of the air inlet (c 13).
15. The flow path system according to claim 14, wherein: the third end (c 35) is formed with a first flanging part (c 351) in a bending manner and/or the fourth end (c 36) is formed with a second flanging part (c 361) in a bending manner.
16. The flow path system according to claim 15, wherein: the first flange portion (c 351) and/or the second flange portion (c 361) are oriented in the gas outflow direction.
17. The flow path system according to claim 15, wherein: the outer surface of the bending part of the first flanging part (c 351) and/or the outer surface of the bending part of the second flanging part (c 361) are arc-shaped.
18. The flow path system according to claim 1, wherein: the number of the spoilers (c 3) is plural, and the plurality of spoilers (c 3) are disposed in the gas inlet (c 13) at intervals in the gas inflow direction.
19. The flow path system according to any one of claims 1 to 18, wherein: the primary air port (b 11) is arranged in the burner (b) at a distance from the nozzle (e 1) for injecting the fuel gas.
20. The flow path system of claim 19, wherein: the flow path system further includes:
a primary air deflector (b 2) having a wind deflector (b 21) located on one side of the interval between the primary air port (b 11) and the nozzle (e 1) and at least partially shielding the interval from the side.
21. The flow path system according to claim 20, wherein: one end of the wind shielding part (b 21) is connected with the burner (b), and a channel for air circulation is arranged between the other end of the wind shielding part and the fuel gas supply assembly (e).
22. The flow path system of claim 21, wherein: the end of the wind shielding part (b 21) is provided with a part which is aligned with the nozzle (e 1) at intervals in the covering direction.
23. The flow path system of claim 21, wherein: a portion of the wind shielding portion (b 21) contacting the burner (b) is close to the primary air port (b 11).
24. The flow path system according to claim 20, wherein: the primary wind deflector (b 2) is connected to a burner housing (b 1) of the burner (b).
25. A combustion heat exchange assembly, characterized by: a flow system comprising any one of claims 1 to 24.
26. A gas water heater, characterized in that: comprising a flow system according to any one of claims 1 to 24 or comprising a combustion heat exchange assembly according to claim 25.
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| CN202310586517.2A CN116336469B (en) | 2023-05-24 | 2023-05-24 | Flow path system, combustion heat exchange assembly and gas water heater |
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| CN116336469A (en) | 2023-06-27 |
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