CN116447746A - Runner system, burning heat transfer subassembly and gas heater - Google Patents

Abstract

The invention relates to the technical field of household appliances, in particular to a runner system, a combustion heat exchange assembly and a gas water heater, wherein the runner system comprises a primary air port and a secondary air port; the primary air port is communicated with the air inlet through a first communication channel; the secondary air port is simultaneously communicated with the exhaust channel and the top wall plate in a counterpoint way; the secondary wind shield cover is arranged at the secondary air port, and is provided with an air inlet hole for air to flow in, and the air inlet hole is communicated with the top wall plate in an alignment way; the exhaust passage is adapted to a spoiler disposed in the flow passage from the intake port to the exhaust passage, and a space exists between the first end of the spoiler and the top wall plate for the air flow from the intake port to the top wall plate to flow into the exhaust passage without passing the spoiler. According to the preferred runner 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

Runner system, burning heat transfer subassembly and gas heater

Technical Field

The invention relates to the technical field of household appliances, in particular to a runner 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, saves more energy compared with an electric water heater, and meets the requirement of double carbon.

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 runner system which is mainly used for guiding gas to flow in a combustion heat exchange assembly with a burner 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 channel system.

Based on the above, a third object of the present invention is to provide a gas water heater having the above flow channel system or the above combustion heat exchange assembly.

The technical solution of the invention is as follows:

a flow path system for directing a flow of gas 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, wherein the exhaust passage is communicated with a fan for exhaust;

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 way, is provided with an air inlet hole for air to flow in, and is in counterpoint communication with the top wall plate;

the spoiler assembly comprises a spoiler which is arranged in the circulation channel from the air inlet to the air outlet in a mode of adapting the air outlet channel, and a space exists between the first end of the spoiler and the top wall plate, and at least part of air flow from the air inlet to the top wall plate flows into the air outlet channel by avoiding the spoiler.

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 part of the air inlet opposite to the top wall plate is blocked by the top wall plate, so that the speed of air inflow is greatly slowed down; 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, an air inlet hole for air to flow in is arranged on the secondary wind shield, the air inlet hole is communicated with the top wall plate in an alignment way, and the air inlet hole and the air exhaust channel are arranged in a dislocation way; 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 air inlet hole to the part of the secondary air port, which is in para-position communication with the air outlet passage, through the suction of the air outlet passage, 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 air outlet passage, 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, a spoiler is additionally arranged, the spoiler is adapted to the exhaust channel and is arranged in the circulation channel from the air inlet to the exhaust channel, and a space for the air flow flowing from the air inlet to the top wall plate to flow into the exhaust channel while avoiding the spoiler is arranged between the first end of the spoiler and the top wall plate, so that when the air inlet flow 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 flow of the opposite part of the air inlet and the exhaust channel is reduced, and the uniformity of the integral air inlet of the fan assembly is realized; and then the fan subassembly can inhale the gas in the burning heat transfer subassembly more evenly and draw in, promotes the homogeneity that this gas flows in the burning heat transfer subassembly, optimizes whole heat transfer effect.

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 spoiler is provided with a plurality of flow disturbing holes for gas to flow from the gas inlet to the gas exhaust channel.

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 spoiler assembly includes two spoilers spaced apart from each other in a direction of inflow of the gas.

Further preferably, the number of the turbulence holes on one of the turbulence plates closer to the exhaust passage is greater than the number of the turbulence holes on the other of the turbulence plates.

Further preferably, the two spoilers are connected together by a connecting portion.

Further preferably, the spoiler has a drainage groove with an opening facing the air intake direction and forming a recess toward the air exhaust passage.

Further preferably, the drainage groove is formed by bending the spoiler.

Further preferably, the aperture of the drainage groove gradually decreases in a direction from the air inlet to the air outlet channel.

Further preferably, the spoiler is disposed in the air intake port so as to fit into the air discharge passage, and the first end is disposed below the portion of the top wall plate adjacent to the air discharge passage at intervals.

Further preferably, the second end of the spoiler is connected to the side wall of the air inlet.

Further preferably, the first end is formed with a first flanging part in a bending manner and/or the second end is formed with a second flanging part in a bending manner.

Further preferably, the flanging directions of the first flanging part and/or the second flanging part are the directions of gas outflow.

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 are arc-shaped.

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 channel system further comprises:

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 runner system as described in any one of the above aspects.

A gas water heater comprising a runner system as described in any of the above schemes, 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 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 exist gas combustion. Thereby optimizing the combustion effect of the burner in the combustion heat exchange assembly. Meanwhile, the spoiler is arranged in the circulation channel from the air inlet to the exhaust channel in a matched mode, and a gap exists between the first end of the spoiler and the top wall plate, so that the uniformity of the whole air inlet of the fan assembly can be balanced. Particularly, when the fan assembly is arranged in the combustion heat exchange assembly and is used for burning gas formed after the burner in the combustion heat exchange assembly, the uniformity of the gas flowing in the combustion heat exchange assembly can be improved, and the overall 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 channel 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 diagram of a secondary wind deflector installation.

Fig. 7 is a second schematic view of secondary wind deflector installation.

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 view of spoiler installation.

FIG. 11 is a schematic view of a fan assembly with a spoiler mounted thereto.

FIG. 12 is a schematic diagram of a second fan assembly with a spoiler mounted thereto.

Fig. 13 is a schematic view of a spoiler.

FIG. 14 is a schematic view of a multi-layer spoiler installation.

FIG. 15 is a schematic view of a spoiler assembly.

Fig. 16 is a schematic view of a spoiler installation with drainage grooves.

Fig. 17 is a second schematic view of spoiler installation with drainage grooves.

Fig. 18 is a schematic view of a spoiler with drainage grooves.

FIG. 19 is a schematic view of a gas water heater.

The figure shows: a bottom case a, a burner b, a burner housing 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, an intake hole b41, a mounting hole b42, a stopper portion b43, a connector b5, a fan assembly c, a hood housing c1, an exhaust passage c11, a top wall plate c12, an intake port c13, a fan c2, a chimney c21, a spoiler c3, a spoiler hole c31, a first end c32, a first burring portion c321, a second end c33, a second burring portion c331, a third end c34, a third end connecting portion c341, a fourth end c35, a fourth end connecting portion c351, a drainage groove c36, a connecting portion c4, a heat exchange assembly d, a heat exchange flow path d1, a gas supply assembly e, 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 runner 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 tests and use find that the use of the runner system to guide the flow of fuel gas and combustion air results in the problem of poor combustion heat exchange effect, which mainly has two 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 to the top wall plate c12, into which the incoming gas flow is blocked by the top wall plate c12, is greatly slowed down; and then cause fan subassembly c itself to have the uneven problem of drainage, and then make runner 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 is provided with an air inlet hole b41 for air to flow in, and the air inlet hole b41 is aligned with the top wall plate c 12.

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 air inlet b41 to the part of the secondary air port b12 in communication with the air outlet c11 through the air outlet 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 air outlet 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.

In this embodiment, a filter screen member covering the air inlet b41 may be further disposed on the secondary wind deflector b4, the filter screen member is mounted on an outer side surface of the secondary wind deflector b4 by a screw, and mesh holes for screening and filtering the air flow entering the air inlet b41 are disposed on the filter screen member, so as to prevent impurities in the air from entering the burner b.

For spoiler assemblies:

as shown in fig. 10 or 14, one spoiler c3 may be included, or two spoilers c3 may be disposed at intervals up and down in the gas inflow direction, for example, in fig. 1, or a plurality of spoilers c3 may be disposed at intervals up and down in the gas inflow direction, for example, in fig. 1.

Compared with one spoiler c3, the plurality of spoilers c3 can strengthen the flow-limiting and speed-reducing effects; of course, the two spoilers c3 do not refer to two identical plates in size and structure, but rather, the two plates are provided with the flow-disturbing holes c31, so that flow-limiting speed reduction can be realized, and the specific sizes and structures of the two spoilers c3 can be inconsistent.

The following description will be made with reference to a preferred installation position, specific structure and function of the panel by taking one spoiler c3 as an example, and the rest of the spoilers c3 may be provided with reference to the following description, specifically:

as shown in fig. 10 and 11, the spoiler c3 is provided in the flow passage from the air inlet c13 to the air outlet c11 so as to fit the air outlet c11, and a space exists between the first end c32 of the spoiler c3 and the top wall plate c12 for the air flow flowing from the air inlet c13 to the top wall plate c12 to flow into the air outlet c11 while bypassing the spoiler c3. The spoiler c3 is provided with a plurality of spoiler holes c31 through which air flows from the air inlet c13 to the air outlet channel c 11.

Thus, under the obstructing action of the spoiler c3, the intake air flow flowing to the portion of the intake port c13 opposite to the exhaust passage c11 needs to pass through the spoiler c3 and enter the exhaust passage c11, so as to reduce the flow velocity of the intake air flow at the portion of the intake port c13 opposite to the exhaust passage c 11; the air flow flowing to the portion of the air inlet c13 opposite to the top wall plate c12 can flow into the exhaust channel c11 directly through the interval between the first end c32 and the top wall plate c12 after being blocked by the top wall plate c12, and the excessive speed reduction effect caused by the spoiler c3 is avoided, so that the uniformity of the whole air inlet of the fan assembly can be balanced.

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.

The spoiler c3 may be installed in the exhaust passage c11, or may be installed in the intake port c13 so as to fit the exhaust passage c 11.

As shown in fig. 10, under the suction of the fan c2, the air flow flows upward into the exhaust passage c11, and the spoiler c3 is disposed in the air inlet c13 and aligned vertically with the air flow inlet at the lower end of the exhaust passage c11 to better cover the air flow inlet at the lower end of the exhaust passage c11 and to reduce the speed of the air flow flowing upward directly through the portion of the air inlet c13 opposite to the exhaust passage c11 and into the exhaust passage c 11. And the first end c32 is spaced below the portion of the top wall plate c12 near the exhaust passage c 11.

Meanwhile, in order to raise the deceleration area, it is preferable that the second end c33 of the spoiler c3 is connected to the sidewall of the air intake port c 13.

Further, as shown in fig. 13, the first end c32 is formed with a first flanging portion c321 and/or the second end c33 is formed with a second flanging portion c331, so as to enhance the strength of the spoiler c3 and reduce the possibility of the spoiler c3 shaking itself due to the impact of the air flow.

As shown in fig. 13, the flanges of the first flange portion c321 and/or the second flange portion c331 face in the direction in which the gas flows out, so that the possibility of vortex generation caused by the impact of the gas flow into the gap of the flanges is reduced.

As shown in fig. 13, the outer surface of the bent portion of the first flanging portion c321 and/or the outer surface of the bent portion of the second flanging portion c331 are arc-shaped, so that airflow flowing through the outer surface of the flanging portion 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 portion is avoided.

Of course, the spoiler c3 may be non-detachably fixed to the hood case c1 by welding, or may be detachably fixed to the hood case c1 by screws.

In this embodiment, as shown in fig. 12 and 13, the spoiler c3 further includes a third end c34 and a fourth end c35 that are aligned at intervals; the third end c34 is provided with a third end connecting part c341 which is connected to one side wall of the smoke hood shell c1, the fourth end c35 is provided with a fourth end connecting part c351 which is connected to the other side wall of the smoke hood shell c1, so that the spoiler c3 is installed in an balanced and stable mode, and further the deceleration effect on air flow can be achieved stably.

Specifically, when the screw is fixed, the threaded end of the screw passes through the hood housing c1 and is screwed to the third end connecting part c341 or the fourth end connecting part c351; or the threaded end of the screw is screwed to the hood case c1 through the third end connection portion c341 or the fourth end connection portion c 351.

Further, the third end connecting portion c341 and the fourth end connecting portion c351 are all attached to the side wall of the hood casing c1, so that the attaching and connecting area between the spoiler c3 and the hood casing c1 is increased, and the connecting stability is further improved.

On the basis of the above, for the case where the spoiler assembly includes two spoilers c3 arranged at intervals in the gas inflow direction, for example, up and down in fig. 1, as shown in fig. 14:

the two spoilers c3 can be separated and arranged, and can be connected into a whole through the connecting part c4, so that the position stability between the two spoilers c3 and the stability of the whole structure are improved.

Meanwhile, the number of the spoiler holes c31 on one spoiler c3 closer to the exhaust passage c11 may be set to be more than the number of the spoiler holes c31 on the other spoiler c 3; for example, in fig. 14, the number of spoiler holes c31 in the upper spoiler c3 is greater than the number of spoiler holes c31 in the lower spoiler c 3.

When the smoke flows through the lower layer plate, the holes of the lower layer plate are less, the smoke flow is small, and the flow speed is high; when the flue gas flows through the upper layer plate, the holes are more, and the flow speed of the flue gas is low; the reasonable flow-limiting and speed-reducing of the flue gas is realized by adopting a double-layer turbulence uneven perforating mode.

Further, as shown in fig. 16, 17 and 18:

the spoiler c3 has a diversion trench c36 having an opening facing the intake direction and forming a recess toward the exhaust passage c11, and is capable of blocking the airflow decelerated by the spoiler c3 from flowing in a scattered manner and guiding the airflow decelerated by the spoiler c3 into the exhaust passage.

Further, as shown in fig. 1, the drainage groove c36 is formed by bending a spoiler c 3; and for better drainage effect, the caliber of the drainage groove c36 gradually decreases in the direction from the air inlet c13 to the air outlet channel c11, for example, in the direction from bottom to top in fig. 16.

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 runner 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 (27)

1. A runner system for directing a flow of gas in a combustion heat exchange assembly having a burner (b), a fan assembly (c), the runner 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 aligned with the air discharge passage (c 11) and a top wall plate (c 12) disposed on one side of the air discharge 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 port (c 13) through a first flow passage passing through the combustion zone and the heat exchange zone;

the secondary air port (b 12) is communicated with the exhaust channel (c 11) and the top wall plate (c 12) in a counterpoint mode through a second flow channel passing through the combustion zone and the heat exchange zone and the air inlet (c 13) in sequence;

A secondary wind deflector (b 4) which is covered on the secondary air port (b 12) in a manner of blocking air circulation, wherein the secondary wind deflector (b 4) is provided with an air inlet hole (b 41) for air to flow in, and the air inlet hole (b 41) is communicated with the top wall plate (c 12) in an alignment way;

a spoiler assembly comprising a spoiler (c 3) arranged in the flow channel of the air inlet (c 13) to the air outlet channel (c 11) so as to adapt the air outlet channel (c 11), and a space being present between a first end (c 32) of the spoiler (c 3) and the top wall plate (c 12) for at least part of the air flow flowing from the air inlet (c 13) to the top wall plate (c 12) to flow into the air outlet channel (c 11) without passing the spoiler (c 3).

2. The runner system according to claim 1, wherein: the spoiler (c 3) is provided with a plurality of spoiler holes (c 31) for gas to flow from the gas inlet (c 13) to the exhaust passage (c 11).

3. The runner 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 runner 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 channel system as set forth in 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 runner 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 channel system as set forth in claim 4, wherein: one end of the secondary wind deflector (b 4) is provided with a limiting part (b 43).

8. The runner 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 runner system according to claim 1, wherein: the spoiler assembly comprises two spoilers (c 3) which are arranged at intervals in the gas inflow direction.

10. The runner system according to claim 9, wherein: the number of the spoiler holes (c 31) on one of the spoilers (c 3) closer to the exhaust passage (c 11) is greater than the number of the spoiler holes (c 31) on the other of the spoilers (c 3).

11. The runner system according to claim 9, wherein: the two spoilers (c 3) are connected into a whole through a connecting part (c 4).

12. The runner system according to claim 1, wherein: the spoiler (c 3) has a drainage groove (c 36) which opens in the intake direction and forms a recess toward the exhaust passage (c 11).

13. The flow channel system of claim 12, wherein: the drainage groove (c 36) is formed by bending the spoiler (c 3).

14. The flow channel system of claim 12, wherein: in the direction from the air inlet (c 13) to the air outlet channel (c 11), the aperture of the drainage groove (c 36) is gradually reduced.

15. The runner system according to claim 1, wherein: the spoiler (c 3) is disposed in the air intake (c 13) so as to fit the exhaust passage (c 11), and the first end (c 32) is disposed at a spacing below a portion of the top wall plate (c 12) near the exhaust passage (c 11).

16. The flow channel system of claim 15, wherein: the second end (c 33) of the spoiler (c 3) is connected to the side wall of the air inlet (c 13).

17. The flow channel system of claim 16, wherein: the first end (c 32) is formed with a first flanging part (c 321) in a bending manner and/or the second end (c 33) is formed with a second flanging part (c 331) in a bending manner.

18. The flow channel system of claim 17, wherein: the flanging directions of the first flanging part (c 321) and/or the second flanging part (c 331) are all directions in which gas flows out.

19. The flow channel system of claim 17, wherein: the outer surface of the bending part of the first flanging part (c 321) and/or the outer surface of the bending part of the second flanging part (c 331) are arc-shaped.

20. The runner system according to any one of claims 1 to 19 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.

21. The flow channel system of claim 20, wherein: the flow channel system further comprises:

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.

22. The flow channel system of claim 21, 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).

23. The flow channel system of claim 22, 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.

24. The flow channel system of claim 22, wherein: a portion of the wind shielding portion (b 21) contacting the burner (b) is close to the primary air port (b 11).

25. The flow channel system of claim 21, wherein: the primary wind deflector (b 2) is connected to a burner housing (b 1) of the burner (b).

26. A combustion heat exchange assembly, characterized by: comprising a runner system according to any of claims 1 to 25.

27. A gas water heater, characterized in that: comprising a runner system as claimed in any one of claims 1 to 25 or comprising a combustion heat exchange assembly as claimed in claim 26.