CN218883961U - Air supply mixing device and water heater - Google Patents

Abstract

The utility model provides an air feed mixing arrangement and water heater relates to air feed and mixes technical field. The utility model discloses a mixing arrangement includes the fan, the air-out end of fan is connected with joins subassembly and the two communicates each other, it is provided with the intake pipe that is used for inputing the gas to join the subassembly, the air outlet department of joining the subassembly is provided with mixed subassembly. Based on the technical scheme of the utility model, the fuel gas and the air are arranged at the rear end of the fan for premixing, the fuel gas can not pass through the fan in the whole process, the requirements on the sealing property and the electrical property of the fan are low, and the device is suitable for popularization; and the whole structure is simple and reliable, and the gas and the air can be mixed better in proportion.

Description

Air supply mixing device and water heater

Technical Field

The utility model relates to an air feed mixes technical field, relates to an air feed mixing arrangement and water heater very much.

Background

The full premix combustion technology is widely applied to gas heating furnaces and gas water heater products, and can be divided into fan front-end premixing and fan rear-end premixing according to a gas premixing mode. The fan front end premixing mode has high requirements for sealing performance, so that the manufacturing cost of the fan is high, the fan front end premixing mode has high requirements for electrical safety, ignition is easy to occur when the safety is insufficient, and fire disasters are caused.

SUMMERY OF THE UTILITY MODEL

To the problem among the above-mentioned prior art, this application has provided an air feed mixing arrangement and water heater, realizes that gas and air are located the fan rear end and mixes in advance, simple structure, and is with low costs, is fit for promoting, can mix gas and air in proportion more optimally.

The utility model discloses an air feed mixing arrangement, including the fan, the air-out end of fan is connected with joins subassembly and the two and communicates each other, it is provided with the intake pipe that is used for the input gas to join the subassembly, it is located along air current moving direction still to be provided with in the subassembly to join the mixed subassembly of intake pipe position rear end.

The gas all sets up the rear end at the fan with the subassembly that converges of air, compares the fan front end and preblends, and the gas can not pass through the fan, and the equipment structure that the moving path of gas passed through is less, and the journey is shorter. Compared with the premixing of the front end of the fan, the premixing of the rear end of the fan has lower requirements on the sealing performance and the electrical safety of the fan, the manufacturing cost is low, and the fan is more suitable for popularization. Join the subassembly through the setting and can realize proportional input gas and air, mix gas and air through mixing assembly, mixing assembly sets up inside joining the subassembly, compares and sets up mixing assembly outside joining the subassembly, further reduces mixing assembly and the leakproofness requirement that joins the subassembly.

In one embodiment, the converging component has a throat portion with a reduced inner diameter at a location between the air inlet and the air outlet thereof, and the air inlet pipe is disposed in the throat portion and communicates with a throat in the throat portion.

Through this embodiment, the air inlet end that joins the subassembly communicates mutually with the air-out end of fan, and the air admission becomes to joining the inside back of subassembly, and the pressure of throat department diminishes, produces from the intake pipe to the air current phenomenon that joins the subassembly, and in the gas flowed smoothly got into joining the subassembly under this effort, the air was joined together and is moved to the air-out end that joins the subassembly together at throat position air and gas, played the effect of primary mixing.

In one embodiment, the mixing assembly comprises a splitter plate, the splitter plate is covered on the air outlet of the converging assembly, and a plurality of splitter holes are formed in the splitter plate. Through this embodiment, the flow distribution plate lid is established at the air outlet department that converges the subassembly, and the flow distribution plate can play supplementary effect of mixing. Under the shunting action of the splitter plate, the mixed gas of the fuel gas and the air uniformly enters the combustor.

In one embodiment, the mixing assembly further comprises a spoiler, one end of which is connected to one side surface of the flow dividing plate adjacent to the inside of the confluence assembly, and the other end of which extends toward the inside of the confluence assembly.

Through this embodiment, realize playing the effect of stirring to the mist of gas and air through the spoiler, improve the mixing efficiency of gas and air.

In one embodiment, the spoiler is in the form of a helix twisted rotationally about its own axis. Through this embodiment, the appearance of spoiler is the spiral, plays the effect to the rotatory stirring of gas and air, improves the mixing efficiency of gas and air.

In one embodiment, the width of the spoiler gradually decreases in a direction away from the flow dividing plate. Through this embodiment, the mist is rotary motion under the effect of spoiler, guarantees going on smoothly to the rotatory stirring of gas and air mist.

In one embodiment, the plurality of diverter holes are evenly distributed on the diverter plate, and/or the plurality of spoilers are evenly distributed on the diverter plate. Through this embodiment, a plurality of flow distribution holes and a plurality of spoiler all evenly distributed guarantee the homogeneity of mist when the flow distribution plate, make the mist circulation smooth and easy.

In one embodiment, the connection position of the spoiler on the flow distribution plate is taken as a center, and the plurality of flow distribution holes on the flow distribution plate are uniformly distributed on the periphery of the center. Through this embodiment, make the reposition of redundant personnel hole encircle around the spoiler periphery, when the spoiler played vortex, water conservancy diversion effect, the reposition of redundant personnel hole can be derived the mixed air that is close to the border position by spoiler direction circulation channel, realizes the smooth circulation of air.

In one embodiment, the inlet end of the fan is detachably provided with an air filter screen. Through this embodiment, inside the air passed air filter and entered into the fan from the fan air intake, played the purification effect to the air.

In one embodiment, the inlet end of the fan is provided with a filter screen positioning buckle, and the air filter screen is connected with the fan through the filter screen positioning buckle. Through this embodiment, filter screen location is detained and is adopted the slotted, and the convenience is swiftly changed, is overhauld airstrainer.

A water heater comprises a burner and an air supply mixing device, wherein an air outlet end of the air supply mixing device is communicated with the burner. Through this embodiment, air feed mixing arrangement mixes air and gas with certain proportion, guarantees to burn fully in the combustor, improves energy utilization.

The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.

The utility model provides a pair of air feed mixing arrangement and water heater compares with prior art, possesses following beneficial effect at least:

the fuel gas and the air are arranged at the rear end of the fan for premixing, the fuel gas does not pass through the fan in the whole process, the requirements on the sealing property and the electrical property of the fan are low, the fan is suitable for popularization, and the mixing effect of two-stage mixing is better; and the whole structure is simple and reliable, and the gas and the air can be mixed better in proportion.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 shows an exploded schematic view of the air supply mixing device of the present invention;

FIG. 2 is a schematic view showing a cross-sectional structure of the confluence module and a flow direction of gas and air;

fig. 3 shows a schematic perspective view of a mixing device according to the present invention;

fig. 4 shows a schematic connection diagram of the air supply mixing device and the burner of the present invention;

in the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Reference numerals are as follows:

10-a fan, 11-an air filter screen, 12-a filter screen positioning buckle, 20-a converging component, 30-an air inlet pipe, 40-a mixing component, 41-a splitter plate, 411-a splitter hole, 42-a spoiler and 50-a combustor.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The utility model discloses an air feed mixing arrangement, including fan 10, the air-out end of fan 10 is connected with joins subassembly 20 and the two communicates each other, joins subassembly 20 and is provided with the intake pipe 30 that is used for the input gas, joins still to be provided with in the subassembly 20 along the air current flow direction be located the (air outlet) mixed subassembly 40 of intake pipe 30 rear end.

The gas and air converging assembly 20 and the mixing assembly 40 are both arranged at the rear end of the fan 10, compared with the premixing at the front end of the fan 10, the gas cannot pass through the fan 10, and the moving path of the gas passes through fewer equipment structures and is shorter in distance. Compared with premixing at the front end of the fan 10, premixing at the rear end of the fan 10 has lower requirements on the sealing performance and the electrical safety of the fan 10, and the fan is low in manufacturing cost and more suitable for popularization. Join subassembly 20 through the setting and can realize proportional input gas and the air that gets into through the fan, the gas can join subassembly 20 inside at first with the air and premix, then can carry out further mixture to gas and air through setting up in the mixed subassembly 40 that joins the subassembly 20 air outlet, and the mixed effect of two-stage mixing is better. The placement of the mixing assembly 40 inside the converging assembly 20 further reduces the sealing requirements of the mixing assembly 40 and the converging assembly 20 as compared to placing the mixing assembly 40 outside the converging assembly 20.

In this embodiment, the mixing component 20 is disposed at the air outlet of the converging component 40, and may be disposed at other positions inside the converging component 40 according to actual situations.

In one embodiment, the converging component 20 has a throat portion with a reduced inner diameter at a location between the inlet and outlet ports thereof, and the inlet tube 30 is disposed in the throat portion and communicates with the throat within the throat portion.

Specifically, join subassembly 20's air inlet end and fan 10's air-out end and communicate, join subassembly 20's theory of use and venturi are similar, and the air enters into and joins subassembly 20 inside back, and the pressure of throat department diminishes, produces the air current phenomenon from intake pipe 30 to joining subassembly 20, and the gas flows smoothly under this effort and gets into joining subassembly 20 in, and the air joins and moves to joining subassembly 20's air-out end together with the gas in throat position, plays the effect of preliminary mixing.

In one embodiment, the mixing assembly 40 includes a flow distribution plate 41, the flow distribution plate 41 is disposed at the air outlet of the converging assembly 20, and the flow distribution plate 41 is provided with a plurality of flow distribution holes 411. The air outlet of the converging assembly 20 is covered by the splitter plate 41, and the porous structure on the splitter plate 41 can uniformly split the air flow, so that the further mixing effect is achieved. The mixed gas of the gas and the air is uniformly introduced into the burner 50 by the flow dividing action of the flow dividing plate 41.

In one embodiment, the mixing assembly 40 further includes a spoiler 42, one end of the spoiler 42 is connected to one side surface of the diverging plate 41 near the inside of the junction assembly 20, and the other end of the spoiler 42 extends toward the inside of the junction assembly 20.

The disturbance of the mixed gas of the fuel gas and the air is realized through the spoiler 42, the stirring effect is achieved, and the mixing efficiency of the fuel gas and the air is improved.

Specifically, the spoiler 42 is connected to the dividing plate 41 by welding or gluing, and when the number of the spoiler 42 is only one, the spoiler 42 is located at the center of the dividing plate 41; the number of the spoilers 42 can be multiple, and the air supply mixing devices of the spoilers 42 are uniformly distributed on the splitter plate 41.

In one embodiment, the spoiler 42 is in the form of a helix that is rotationally twisted about its own axis. The shape of the spoiler 42 is spiral, so that the effect of rotating and stirring the gas and the air is achieved, and the mixing efficiency of the gas and the air is improved. As shown in fig. 2, the mixed gas moves along the spiral surface of the spoiler 42, so as to reduce the loss of kinetic energy of the mixed gas and ensure that the mixed gas can smoothly enter the burner 50 through the splitter.

In one embodiment, the width of the spoiler 42 gradually decreases in a direction away from the flow dividing plate 41. The mixed gas rotates under the action of the spoiler 42, so that the smooth rotation and stirring of the mixed gas of the fuel gas and the air are ensured. As shown in fig. 3, the spiral-structured spoiler 42 is conical on the splitter plate 41, and the top end of the cone faces the flowing direction of the mixed gas, so that the force applied to the mixed gas is better. In addition, the conical structure can flow and disperse the mixed gas to the outside, and the mixed gas is prevented from being excessively concentrated at the position corresponding to the center of the air outlet.

In one embodiment, the plurality of the flow dividing holes 411 are uniformly distributed on the flow dividing plate 41, and/or the plurality of the spoilers 42 are uniformly distributed on the flow dividing plate 41. The plurality of flow distribution holes 411 and/or the plurality of spoilers 42 are uniformly distributed, so that the uniformity of the mixed gas passing through the flow distribution plate 41 is ensured, and the mixed gas can smoothly circulate.

In one embodiment, an air filter 11 is removably disposed at the inlet end of the fan 10. Air passes through the air filter screen 11 and enters the fan 10 from the air inlet of the fan 10, and the air is purified. Meanwhile, the foreign matters with larger particles can be filtered, and the foreign matters are prevented from entering the fan 10 to influence the normal work of the fan 10.

In one embodiment, the inlet end of the fan 10 is provided with a filter positioning buckle 12, and the air filter 11 is connected with the fan 10 through the filter positioning buckle 12. Filter screen location is detained 12 for the slotted filter screen location, and the quantity of filter screen location knot 12 is at least three to be located the periphery of fan 10 air inlet end, all filter screen location are detained 12 and are reserved a passageway for air cleaner's 11 installation and dismantlement, insert air cleaner 11 back promptly, and air cleaner 11 covers the air inlet end at fan 10 filter screen, and air cleaner's 11 edge is detained 12 fixedly by the filter screen location. When the air filter screen 11 needs to be replaced and then overhauled, the air filter screen 11 is directly pulled out through a channel reserved in the filter screen positioning buckle 12. The filter screen positioning buckle 12 is of a sliding groove type, so that the air filter screen 11 is convenient to replace and overhaul quickly.

The utility model discloses a water heater, including combustor 50 and air feed mixing arrangement, air feed mixing arrangement's air-out end and combustor 50 intercommunication. The air supply mixing device mixes air and fuel gas in a certain proportion, ensures the full combustion in the combustor 50 and improves the energy utilization rate.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims (11)

1. The utility model provides an air feed mixing arrangement, a serial communication port, includes the fan, the air-out end of fan is connected with joins the subassembly and the two communicates each other, it is provided with the intake pipe that is used for inputing the gas to join the subassembly, it is located along air current moving direction still to be provided with in the subassembly the mixed subassembly of intake pipe position rear end.

2. The air supply mixing device of claim 1, wherein the converging component has a throat portion with a reduced inner diameter at a position between the air inlet and the air outlet thereof, and the air inlet pipe is disposed in the throat portion and communicated with a throat in the throat portion.

3. The air-supply mixing device of claim 2, wherein the mixing assembly comprises a splitter plate, the splitter plate is covered at the air outlet of the converging assembly, and the splitter plate is provided with a plurality of splitter holes.

4. The air supply mixing device of claim 3, wherein the mixing assembly further comprises a spoiler, one end of the spoiler being connected to a side surface of the diverging plate adjacent to the inside of the merging assembly, and the other end of the spoiler extending toward the inside of the merging assembly.

5. The air supply mixing device of claim 4, wherein the spoiler is in a spiral shape twisted in rotation about its own axis.

6. The air supply mixing device of claim 4, wherein the width of the spoiler gradually decreases in a direction away from the flow distribution plate.

7. The air supply mixing device of claim 4, wherein a plurality of the splitter holes are uniformly distributed on the splitter plate, and/or a plurality of the spoilers are uniformly distributed on the splitter plate.

8. The air supply mixing device according to any one of claims 4 to 7, wherein the plurality of flow distribution holes on the flow distribution plate are uniformly distributed on the periphery of the center, which is centered on the connection position of the spoiler on the flow distribution plate.

9. The air supply mixing device of claim 1, wherein an air filter screen is detachably arranged at the air inlet end of the fan.

10. The air supply mixing device of claim 9, wherein a filter screen positioning buckle is arranged at the air inlet end of the fan, and the air filter screen is connected with the fan through the filter screen positioning buckle.

11. A water heater, characterized in that, including combustor and the air supply mixing arrangement of any one of claims 1-10, the air-out end of air supply mixing arrangement communicates with combustor.

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