CN210425013U - Premixing air inlet structure and gas water heater with same - Google Patents
Premixing air inlet structure and gas water heater with same Download PDFInfo
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- CN210425013U CN210425013U CN201920465247.9U CN201920465247U CN210425013U CN 210425013 U CN210425013 U CN 210425013U CN 201920465247 U CN201920465247 U CN 201920465247U CN 210425013 U CN210425013 U CN 210425013U
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Abstract
The utility model discloses a mix air inlet structure in advance and gas heater who has it, mix air inlet structure in advance includes: the cover plate is internally provided with an air flow channel, the cover plate is provided with an air inlet and a mixed gas outlet, and the air inlet and the mixed gas outlet are respectively communicated with the air flow channel; the gas joint, the gas joint is installed on the apron, and the gas joint has gas import and gas export, and the gas export stretches into in the air runner, and the gas export is a plurality of and at least partly gas export the orientation difference. According to the utility model discloses mix air inlet structure in advance has simple structure, small and mix advantages such as effectual.
Description
Technical Field
The utility model belongs to the technical field of the water heater technique and specifically relates to a premix air inlet structure and gas heater who has it is related to.
Background
The related art provides a premixing fan for a gas water heater, and the premixing fan mixes air and gas by feeding the air and the gas into a fan volute from respective independent flow channels, but has the defects of complex structure, low mixing efficiency of the gas and the air and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a premix air inlet structure, premix air inlet simple structure, mix effectually.
The utility model also provides a gas heater of above-mentioned premixing air inlet structure.
According to the utility model discloses in advance mix air inlet structure of first aspect embodiment, include: the cover plate is internally provided with an air flow channel, the cover plate is provided with an air inlet and a mixed gas outlet, and the air inlet and the mixed gas outlet are respectively communicated with the air flow channel; the gas joint is installed on the cover plate and provided with a gas inlet and a gas outlet, the gas outlet extends into the air flow channel, and the gas outlets are multiple and at least one part of the gas outlets are different in orientation.
According to the utility model discloses mix air inlet structure in advance has simple structure, small and mix advantages such as effectual.
In addition, according to the utility model discloses above-mentioned embodiment's premix air inlet structure can also have following additional technical characterstic:
according to the utility model discloses a some embodiments, be formed with the gas runner in the gas joint, the gas runner intercommunication the gas import with the gas export, the gas runner is reducing runner and is close to the runner cross section of gas export is less than and is close to the runner cross section of gas import.
Optionally, the gas flow path comprises: the gas burner comprises an inlet section, an outlet section and a transition section, wherein the transition section is connected between the inlet section and the outlet section, the inlet section is connected with a gas inlet, the outlet section is connected with a gas outlet, and the cross section of a flow passage of the inlet section is larger than that of the outlet section.
Further, the transition section is a circular truncated cone-shaped circumferential surface with a gradually changed cross section of the flow passage.
Furthermore, the inlet section and the transition section are positioned outside the air flow channel, the outlet section penetrates through the wall of the cover plate and extends into the air flow channel, a flange is arranged on the peripheral surface of the transition section, and the flange is attached and fixed on the outer wall surface of the cover plate.
According to some embodiments of the invention, the gas outlet penetrates the peripheral wall of the outlet section to form a circumferential gas outlet, the circumferential gas outlet being a plurality of and arranged along a circumferential spacing of the outlet section.
Optionally, the gas outlet further comprises: the tip gas export, the tip gas export sets up the free end of export section, the tip gas export is followed the axial of export section is opened.
Further, the inner peripheral surface of the outlet section is provided with an annular protrusion, the annular protrusion is located between the circumferential gas outlet and the free end face of the outlet section, and the end gas outlet is defined by the annular protrusion.
Preferably, the annular projection has a smooth and arcuate gas flow surface.
Optionally, the circumferential gas outlet has a rounded configuration capable of reducing gas flow resistance.
According to some embodiments of the invention, the cover plate comprises: the air flow passage is defined between the air passage plate and the cover plate body.
Optionally, the air duct plate has a sector-shaped cross section, and the air inlet is formed on an outer arc side of the air duct plate away from a center of the circle.
Further, the gas outlet is located in the circle center area corresponding to the air duct plate.
Optionally, the duct board comprises: the upper plate part is connected with the cover plate body through the peripheral wall plate, and the connecting part of the peripheral wall plate and the upper plate part is in smooth transition.
According to some embodiments of the utility model, the gas connect with the air runner is arranged perpendicularly, the air intlet perpendicular to the gas connects, the orientation of gas mixture export with the length direction that the gas connects is the same.
According to some embodiments of the invention, the air flow channel is configured as a tapered air flow channel.
According to some embodiments of the invention, the air inlet is provided with a filter screen.
According to the utility model discloses gas heater of second aspect embodiment, include according to the utility model discloses the air inlet structure in advance of first aspect embodiment.
According to the utility model discloses gas water heater is through utilizing according to the utility model discloses the premixing air inlet structure of first aspect embodiment has advantages such as the gas combustion is abundant, energy-concerving and environment-protective.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of a premixing air inlet structure according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a portion of a premix air intake structure according to an embodiment of the present invention;
fig. 3 is a sectional view of the premixed air intake structure along the axial direction of the gas joint according to the embodiment of the present invention;
FIG. 4 is an enlarged partial schematic view at A of FIG. 3;
fig. 5 is a schematic structural view of an upper plate portion of a premixed air intake structure according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a gas joint of a premixing air inlet structure according to the embodiment of the present invention.
Reference numerals:
a premix air intake structure 100;
a cover plate 10; the air flow passage 10 a; an air inlet 10 b; a mixed gas outlet 10 c; a cover plate body 11; an air duct plate 12; an upper plate portion 121; mounting holes 121 a; a mounting plane 121 b; a peripheral wall plate 122; a filter screen 13; a positioning groove 14;
a gas joint 20; a gas inlet 21; a gas outlet 22; a circumferential gas outlet 221; the rounded structure 221 a; an end gas outlet 222; the fuel gas flow passage 23; an inlet section 231; a transition section 232; an outlet section 233; a flange 24; an annular projection 25; the gas flow surface 25 a;
a seal 30.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and 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 thus, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring now to fig. 1-6, a premix air intake structure 100 according to an embodiment of the first aspect of the present invention will be described. The utility model discloses mix air inlet structure 100 in advance can be used for gas heater.
As shown in fig. 1 to 3, a premixing air inlet structure 100 according to an embodiment of the present invention includes a cover plate 10 and a gas joint 20.
The cover plate 10 is internally provided with an air flow channel 10a, the cover plate 10 is provided with an air inlet 10b and a mixed gas outlet 10c, the air inlet 10b and the mixed gas outlet 10c are respectively communicated with the air flow channel 10a, the gas joint 20 is installed on the cover plate 10, the gas joint 20 is provided with a gas inlet 21 and a gas outlet 22, the gas outlet 22 extends into the air flow channel 10a, and the gas outlets 22 are multiple and at least part of the gas outlets 22 are in different orientations.
Specifically, the gas joint 20 is used for supplying gas to the air flow passage 10a in the cover plate 10, the gas joint 20 is mounted on the cover plate 10, at least a portion of the gas joint 20 is located in the air flow passage 10a, a gas inlet 21 is formed in a portion of the gas joint 20 located outside the air flow passage 10a, the gas inlet 21 is used for connecting a gas delivery pipe (not shown in the drawings), a gas outlet 22 is formed in a portion of the gas joint 20 located in the air flow passage 10a, for example, in the embodiment shown in fig. 3, a portion of the gas joint 20 located on the lower side protrudes into the air flow passage 10a, a plurality of gas outlets 22 are defined by the lower end of the gas joint 20, a portion of the gas joint 20 located on the upper side is located outside the air flow passage 10a, and the gas inlet 21 is defined by the.
It is understood that the orientation of the gas outlets 22 refers to the opening direction of the gas outlets 22, i.e. the opening direction of at least two gas outlets 22 of the plurality of gas outlets 22 is different. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The operation of the premixing inlet structure 100 according to the embodiment of the present invention is described below. The gas conveying pipe conveys gas into the gas joint 20 through a gas inlet 21, and the gas enters the air flow channel 10a along different directions through the shunting of a plurality of gas outlets 22; the external air enters the air flow passage 10a through the air inlet 10b, and is mixed with the gas in the air flow passage 10a, and the mixed gas is discharged through the mixed gas outlet 10 c.
It should be noted that, the utility model discloses premixed air inlet structure 100 is used for premixing air and gas, and gas mixture export 10c is suitable for being connected with the fan (not shown in the figure), and the gas mixture through premixing gets into the fan spiral case by gas mixture export 10c and carries out stirring once more and mix, then is spout by the fan air outlet.
According to the utility model discloses a mix air inlet structure 100 in advance, through setting up gas joint 20 and apron 10, can realize the mixture of gas and air in the air runner 10a in the apron 10, the structure is comparatively simple, and overall structure's volume is less to can reduce and mix the shared installation space of air inlet structure 100 in advance. Furthermore, through set up a plurality of gas outlets 22 on gas joint 20, and at least some gas outlets 22 orientation is different, when the gas got into air runner 10a from gas joint 20, can realize the reposition of redundant personnel of the equidirectional reposition of redundant personnel of gas to promote the mixing efficiency of gas and air, and mix effectually. Therefore, according to the utility model discloses premixed air inlet structure 100 has simple structure, small and mix advantages such as effectual.
In some embodiments of the present invention, as shown in fig. 1 to 3, the cover plate 10 includes a cover plate body 11 and an air duct plate 12, the air duct plate 12 is disposed on the cover plate body 11, and an air flow passage 10a is defined between the air duct plate 12 and the cover plate body 11.
Specifically, the cover plate body 11 may be connected to an upper surface of the air duct plate 12 to define an air flow passage 10a between the cover plate body 11 and the air duct plate 12, the air duct plate 12 is provided with a mounting hole 121a communicated with the air flow passage 10a, and the gas joint 20 is inserted into the mounting hole 121a so that the gas outlet 22 of the gas joint 20 extends into the air flow passage 10 a. Therefore, the cover plate 10 can be constructed into a flat structure by arranging the cover plate body 11 and the air duct plate 12, so that the size of the cover plate 10 in the height direction is reduced, the overall thickness of the premixing air inlet structure 100 is reduced, and the size of the whole machine is further reduced.
Preferably, the cover plate body 11 and the air duct plate 12 are integrally formed, so that the assembling process of the cover plate body 11 and the air duct plate 12 is omitted, the overall structural strength of the cover plate body 11 and the air duct plate 12 is good, and the air tightness of the air flow channel 10a is ensured.
Optionally, the air duct plate 12 includes an upper plate portion 121 and a peripheral wall plate 122, the peripheral wall plate 122 connects the upper plate portion 121 and the cover plate body 11, and a junction of the peripheral wall plate 122 and the upper plate portion 121 is in smooth transition.
Specifically, the peripheral wall plates 122 are two and located on two opposite sides of the upper plate portion 121, wherein the upper edge of each peripheral wall plate 122 is connected to the side edge of the upper plate portion 121 on the opposite side of the peripheral wall plate 122, the lower edge of each peripheral wall plate 122 is connected to the upper surface of the cover plate body 11, and the lower surface of the upper plate portion 121, the side surfaces of the two peripheral wall plates 122 and the upper surface of the cover plate body 11 define the air flow channel 10a together. It can be understood that the term "smooth transition" refers to a structure in which the connection between the peripheral wall plate 122 and the upper plate portion 121 forms a rounded corner, that is, the peripheral wall plate 122 and the upper plate portion 121 transition through a smooth curved surface, so that the spatial shape of the air flow channel 10a has no corner and is more smooth, the resistance generated by the corner to the air flow can be reduced, the flow velocity of the air in the air flow channel 10a is ensured, and meanwhile, the friction between the air and the inner wall of the air flow channel 10a can be reduced, thereby achieving the effect of reducing noise.
As shown in fig. 3 and 5, the upper surface of the upper plate portion 121 has a mounting plane 121b, the mounting hole 121a is disposed in the middle of the mounting plane 121b, the mounting hole 121a penetrates through the upper plate portion 121 in the thickness direction of the upper plate portion 121, the gas joint 20 is provided with a flange, the flange is supported on the mounting plane 121b when the gas joint 20 is inserted into the mounting hole 121a, and the flange and the mounting plane 121b are connected by a fastener so that they form a flange fit. Therefore, the gas joint 20 and the upper plate part 121 can be connected conveniently and effectively.
Further, a seal 30 is provided between the mounting plane 121b and the flange. Specifically, the mounting plane 121b is provided with a positioning groove 14 recessed downward, the positioning groove 14 extends along the circumferential direction of the mounting plane 121b and is disposed around the mounting hole 121a, the sealing element 30 is embedded in the positioning groove 14, and the sealing element 30 may be a rubber ring. Thereby, the sealing effect between the mounting plane 121b and the flange can be improved.
Alternatively, the duct board 12 has a fan-shaped cross section, and the air inlet 10b is formed on the outer arc side of the duct board 12 away from the center of the circle. The term "fan-shaped cross section" means that the cross section of the air duct plate 12 in the horizontal direction is fan-shaped, and the fan-shaped cross section may be a fan-shaped cross section in a strict sense or may be a fan-shaped cross section. The air inlet 10b is located on one side of the air duct plate 12 far away from the circle center, so that on one hand, the cross-sectional area of the air inlet 10b is large, sufficient air intake can be guaranteed, on the other hand, air flows towards the direction of the circle center of the sector shape along the horizontal direction after entering the air flow channel 10a from the air inlet 10b, the flow area of the air is gradually reduced, the flow speed of the air is gradually increased, and the mixing efficiency of the air and gas can be further improved.
Further, the gas outlet 22 is located in the corresponding circle center region of the air duct plate 12. That is to say, the mounting hole 121a is close to the circle center of the sector, and the flow rate is the largest when the air flows to the circle center of the sector, so that the gas can be stirred after entering the air flow channel 10a, thereby further improving the mixing efficiency of the gas and the air.
In some embodiments of the present invention, as shown in fig. 3, the gas joint 20 is disposed perpendicular to the air flow passage 10a, the air inlet 10b is perpendicular to the gas joint 20, and the mixed gas outlet 10c is oriented in the same direction as the length direction of the gas joint 20.
Specifically, the length direction of the gas joint 20 is parallel to the vertical direction (up-down direction in the drawing), and the air flow passage 10a is arranged along the horizontal direction, i.e., the flow direction of the air in the air flow passage 10a is parallel to the horizontal direction, so that the flow direction of the air and the gas has an angle, thereby improving the mixing efficiency of the air and the gas. The mixed gas outlet 10c is arranged on the cover plate body 11 and penetrates through the cover plate body 11 in the thickness direction of the cover plate body 11, the position of the mixed gas outlet 10c corresponds to the position of the mounting hole 121a, and the mixed gas flows out from the mixed gas outlet 10c in a downward vertical direction, so that the mixed gas can flow out conveniently.
In some embodiments of the present invention, the air flow passage 10a is configured as a tapered air flow passage 10 a. In other words, the cross-sectional area of the air flow passage 10a is gradually reduced in the direction in which the air flows, whereby the flow velocity of the air is gradually increased while the air flows in the air flow passage 10a, thereby improving the mixing effect of the air and the gas.
In some embodiments of the present invention, as shown in fig. 5, a filter screen 13 is disposed at the air inlet 10 b. On the one hand, the impurity debris doped in the air can be filtered, and on the other hand, insects such as cockroaches and the like can be prevented from entering the air flow channel 10a, so that smoke faults are avoided. Preferably, the screen 13 may be made of a metal material to improve the structural strength of the screen 13.
In some embodiments of the present invention, as shown in fig. 3 and fig. 6, a gas flow passage 23 is formed in the gas joint 20, the gas flow passage 23 communicates with the gas inlet 21 and the gas outlet 22, and the gas flow passage 23 is a variable diameter flow passage and the cross section of the flow passage near the gas outlet 22 is smaller than the cross section of the flow passage near the gas inlet 21.
Specifically, the gas flow passage 23 is defined by the inside of the gas joint 20, the gas flow passage 23 penetrates through both ends of the gas joint 20 on the axis of the gas joint 20, the central axis of the gas flow passage 23 is coaxially arranged with the central axis of the gas joint 20, and the gas inlet 21 and the gas outlet 22 are respectively provided at both ends of the gas flow passage 23. It should be noted that, by the term "variable diameter flow passage", it is meant that the cross-sectional area of the gas flow passage 23 is not the same everywhere, that is, the cross-sectional area of the gas flow passage 23 varies in the axial direction of the gas flow passage 23, and the cross-sectional area of the gas flow passage 23 at the gas inlet 21 is larger than the cross-sectional area of the gas flow passage 23 at the gas outlet 22, so that the flow velocity of the gas at the gas outlet 22 is larger than the flow velocity at the gas inlet 21, thereby increasing the flow velocity of the gas entering the air flow passage 10a, and facilitating the mixing effect of the gas and the air.
Optionally, the gas flow passage 23 comprises an inlet section 231, an outlet section 233 and a transition section 232, the transition section 232 is connected between the inlet section 231 and the outlet section 233, the inlet section 231 is connected with the gas inlet 21, the outlet section 233 is connected with the gas outlet 22, and the flow passage cross section of the inlet section 231 is larger than that of the outlet section 233. Therefore, in the process that the fuel gas passes through the fuel gas flow channel 23, the speed of the fuel gas flowing out from the fuel gas outlet 22 is higher than the speed of the fuel gas entering from the fuel gas inlet 21, so that the flow speed of the fuel gas entering the air flow channel 10a is improved, and the mixing efficiency of the fuel gas and the air is further improved.
Further, the transition section 232 is a truncated cone-shaped circumferential surface with a gradually changing cross section of the flow channel. It will be understood that "flow passage cross section" herein refers to a cross section of the flow passage of the transition section 232 taken by a plane passing through the central axis thereof. For example, the transition section 232 is a tapered flow passage, that is, the cross-sectional area of the transition section 232 is gradually changed, wherein the cross-sectional area of the upper end of the transition section 232 (i.e., the end connected with the inlet section 231) is larger than that of the lower end of the transition section 232 (i.e., the end connected with the outlet section 233), and the cross-sectional area of the upper end of the transition section 232 is equal to that of the inlet section 231, and the cross-sectional area of the lower end of the transition section 232 is equal to that of the outlet section 233, so that the cross-sectional shape of the transition section 232 in the axial direction thereof is formed in a circular truncated cone.
Preferably, the junction of the flow cross-section of the transition section 232 and the flow cross-section of the inducer 231 and/or the junction of the flow cross-section of the transition section 232 and the flow cross-section of the inducer 231 is a rounded transition. In other words, the junction between the flow passage cross section of the transition section 232 and the flow passage cross section of the entrance section 231 is in a smooth transition, or both the junction between the flow passage cross section of the transition section 232 and the flow passage cross section of the entrance section 231 and the junction between the flow passage cross section of the transition section 232 and the flow passage cross section of the entrance section 231 are in a smooth transition. This reduces resistance of the inner wall of the gas flow passage 23 to the gas, and the gas flows more smoothly in the gas flow passage 23.
Further, as shown in fig. 3 and 6, the inlet section 231 and the transition section 232 are located outside the air flow passage 10a, the outlet section 233 penetrates through the wall of the cover plate 10 and extends into the air flow passage 10a, the outer peripheral surface of the transition section 232 is provided with a flange 24, and the flange 24 is attached and fixed on the outer wall surface of the cover plate 10. It is understood that the flange plate described above is formed on the flange 24, the outlet section 233 extends into the air flow passage 10a through the mounting hole 121a, the flange plate is supported on the mounting plane 121b of the top plate portion, and the flange plate and the mounting plane 121b are connected by fastening members. Preferably, the flange 24 and the gas joint 20 are integrally formed, so that the assembly process of the flange 24 and the gas joint 20 is omitted, and the manufacturing is convenient.
In some embodiments of the present invention, as shown in fig. 3 and 6, the gas outlets 22 penetrate the peripheral wall of the outlet section 233 to form the circumferential gas outlets 221, and the circumferential gas outlets 221 are plural and arranged at intervals along the circumferential direction of the outlet section 233. Specifically, the opening direction of each circumferential gas outlet 221 is located in the radial direction of the outlet section 233, and the plurality of circumferential gas outlets 221 are distributed at equal intervals in the circumferential direction of the outlet section 233, so that the gas flows out uniformly along the radial direction of the outlet section 233 by being split by the plurality of circumferential gas outlets 221, and the gas and the air are mixed more uniformly, and the mixing efficiency is higher.
Optionally, with continued reference to the embodiment shown in fig. 3 and 6, the gas outlet 22 further comprises an end gas outlet 222, the end gas outlet 222 being provided at a free end of the outlet section 233, the end gas outlet 222 being open in the axial direction of the outlet section 233. It is understood that the free end of the outlet section 233 is the lower end of the outlet section 233, and the opening direction of the end gas outlet 222 is downward in the axial direction of the outlet section 233. Therefore, part of the fuel gas can enter the air flow channel 10a from the end fuel gas outlet 222 along the axial direction of the outlet section 233, so that the fuel gas shunting effect of the fuel gas outlet 22 is further improved, and the mixing efficiency of the fuel gas and the air is higher.
Alternatively, as shown in fig. 4, the circumferential gas outlet 221 has a rounded structure 221a capable of reducing gas flow resistance. Specifically, the rounding structure 221a is formed at the connection between the inner peripheral wall of the circumferential gas outlet 221 and the inner peripheral wall of the outlet section 233, and the rounding structure 221a is formed by rounding at the connection, so that the edge of the circumferential gas outlet 221 forms a smooth transition, which can prevent the gas from generating noise at the edge of the circumferential gas outlet 221, thereby achieving the noise reduction effect.
Alternatively, with continued reference to the embodiment shown in fig. 4, the inner circumferential surface of the outlet section 233 is provided with an annular projection 25, the annular projection 25 being located between the circumferential gas outlet 221 and the free end face of the outlet section 233, the end gas outlet 222 being defined by the annular projection 25. In this way, the cross-sectional area of the end gas outlet 222 is smaller than that of the outlet section 233, the flow velocity of the gas flowing out from the end gas outlet 222 is larger, so that the mixing efficiency of the gas and the air is further improved, and the gas flowing out from the end gas outlet 222 in the vertical downward direction at a high speed is favorable for discharging the mixed gas from the mixed gas outlet 10 c.
Further, the annular projection 25 has a smooth and curved gas flow surface 25 a. Therefore, the resistance of the gas when passing through the gas flow surface 25a is small, the friction between the gas and the gas flow surface 25a can be reduced, the gas flows more smoothly, and the wind noise can be reduced.
A specific embodiment according to the present invention is described in detail below with reference to fig. 1 to 6.
As shown in fig. 1-6, the premix air intake structure 100 includes a cover plate 10 and a gas joint 20.
A tapered air flow channel 10a is formed in the cover plate 10, an air inlet 10b and a mixed gas outlet 10c are formed in the cover plate 10, the air inlet 10b and the mixed gas outlet 10c are respectively communicated with the air flow channel 10a, a gas joint 20 is mounted on the cover plate 10, the gas joint 20 is provided with a gas inlet 21 and a gas outlet 22, a gas flow channel 23 communicated with the gas inlet 21 and the gas outlet 22 is defined in the gas joint 20, the gas inlet 21 is located outside the air flow channel 10a, the gas outlet 22 extends into the air flow channel 10a, and the gas outlets 22 are multiple and at least part of the gas outlets 22 are different in orientation.
The gas joint 20 is disposed perpendicular to the air flow passage 10a, the air inlet 10b is perpendicular to the gas joint 20, and the mixed gas outlet 10c is oriented in the same direction as the length direction of the gas joint 20. Wherein, a filter screen 13 is arranged at the air inlet 10 b.
The gas flow channel 23 comprises an inlet section 231, an outlet section 233 and a transition section 232, wherein the transition section 232 is connected between the inlet section 231 and the outlet section 233, the inlet section 231 is connected with the gas inlet 21, the outlet section 233 is connected with the gas outlet 22, the cross-sectional area of the inlet section 231 is larger than that of the outlet section 233, and the transition section 232 is a circular truncated cone-shaped circumferential surface with gradually changed flow channel cross-section. The inlet section 231 and the transition section 232 are located outside the air flow passage 10a, the outlet section 233 penetrates through the wall of the cover plate 10 and extends into the air flow passage 10a, the outer circumferential surface of the transition section 232 is provided with a flange 24, the outer wall surface of the cover plate 10 is provided with a mounting plane, and the flange 24 is attached and fixed on the mounting plane.
The gas outlet 22 includes a circumferential gas outlet 221 and an end gas outlet 222, the circumferential gas outlet 221 penetrates through a circumferential wall of the outlet section 233 and has a rounded structure 221a capable of reducing gas flow resistance, the circumferential gas outlet 221 is plural and arranged at intervals in a circumferential direction of the outlet section 233, the end gas outlet 222 is provided at a free end of the outlet section 233, and the end gas outlet 222 is provided to be open in an axial direction of the outlet section 233. The inner peripheral surface of the outlet section 233 is provided with an annular projection 25, the annular projection 25 is located between the circumferential gas outlet 221 and the free end surface of the outlet section 233, the end gas outlet 222 is defined by the annular projection 25, and the annular projection 25 has a smooth and arc-shaped gas flow surface 25 a.
The cover plate 10 includes a cover plate body 11 and an air duct plate 12, the air duct plate 12 is disposed on the cover plate body 11 to define an air flow passage 10a therebetween, the air duct plate 12 includes an upper plate portion 121 and a peripheral wall plate 122, the peripheral wall plate 122 connects the upper plate portion 121 and the cover plate body 11, and a connection portion of the peripheral wall plate 122 and the upper plate portion 121 is smoothly transited. The air duct plate 12 has a fan-shaped cross section, and the air inlets 10b are formed on the outer arc side of the air duct plate 12 away from the center of the circle. Wherein, the gas outlet 22 is positioned in the circle center area corresponding to the air duct plate 12.
According to the utility model discloses gas heater of second aspect embodiment, include according to the utility model discloses the premix air inlet structure 100 of first aspect embodiment.
According to the utility model discloses gas water heater, through utilizing according to the utility model discloses the premixing air inlet structure 100 of first aspect embodiment has advantages such as the gas combustion is abundant, energy-concerving and environment-protective.
Other constructions and operations of the premixed intake structure 100 and the gas water heater having the same according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (18)
1. The utility model provides a premix air inlet structure which characterized in that includes:
the cover plate is internally provided with an air flow channel, the cover plate is provided with an air inlet and a mixed gas outlet, and the air inlet and the mixed gas outlet are respectively communicated with the air flow channel;
the gas joint is installed on the cover plate and provided with a gas inlet and a gas outlet, the gas outlet extends into the air flow channel, and the gas outlets are multiple and at least one part of the gas outlets are different in orientation.
2. The premix air intake structure of claim 1, wherein a fuel gas flow channel is formed in the fuel gas joint, the fuel gas flow channel communicates with the fuel gas inlet and the fuel gas outlet, the fuel gas flow channel is a variable diameter flow channel, and a cross section of the flow channel near the fuel gas outlet is smaller than a cross section of the flow channel near the fuel gas inlet.
3. The premix air intake structure of claim 2, wherein the fuel gas flow channel comprises: the gas burner comprises an inlet section, an outlet section and a transition section, wherein the transition section is connected between the inlet section and the outlet section, the inlet section is connected with a gas inlet, the outlet section is connected with a gas outlet, and the cross section of a flow passage of the inlet section is larger than that of the outlet section.
4. The premix air intake structure of claim 3, wherein the transition section is a truncated cone-shaped circumferential surface with a gradually changing cross section of the flow channel.
5. The premix air intake structure of claim 3, wherein the inlet section and the transition section are located outside the air flow passage, the outlet section extends into the air flow passage through a wall of the cover plate, and a flange is provided on an outer circumferential surface of the transition section and is attached and fixed to an outer wall surface of the cover plate.
6. The premix air intake structure of claim 3, wherein the gas outlets extend through a peripheral wall of the outlet section to form a circumferential gas outlet, the circumferential gas outlet being plural and arranged at intervals along a circumference of the outlet section.
7. The premix air intake structure of claim 6, wherein the gas outlet further comprises: the tip gas export, the tip gas export sets up the free end of export section, the tip gas export is followed the axial of export section is opened.
8. The premix air intake structure of claim 7, wherein an inner peripheral surface of the outlet section is provided with an annular protrusion located between the circumferential gas outlet and a free end surface of the outlet section, the end gas outlet being defined by the annular protrusion.
9. The premix air intake structure of claim 8 wherein the annular protrusion has a smooth and arcuate gas flow surface.
10. The structure of claim 6, wherein the circumferential gas outlets have a rounded configuration that reduces gas flow resistance.
11. The premix air intake structure of claim 1, wherein the cover plate comprises: the air flow passage is defined between the air passage plate and the cover plate body.
12. The premix air intake structure of claim 11 wherein the air duct plate has a fan-shaped cross-section, and the air inlet is formed on an outer arc side of the air duct plate away from a center of the circle.
13. The structure of claim 12, wherein the gas outlets are located in a circle center area corresponding to the air duct plate.
14. The premix air intake structure of claim 11, wherein the air duct plate comprises: the upper plate part is connected with the cover plate body through the peripheral wall plate, and the connecting part of the peripheral wall plate and the upper plate part is in smooth transition.
15. The structure of claim 1, wherein the gas joint is arranged perpendicular to the air flow channel, the air inlet is perpendicular to the gas joint, and the direction of the mixed gas outlet is the same as the length direction of the gas joint.
16. The premix air intake structure of claim 1 wherein the air flow channel is configured as a tapered air flow channel.
17. The structure of claim 1, wherein a screen is disposed at the air inlet.
18. A gas water heater comprising a premix air intake structure as claimed in any of claims 1 to 17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920465247.9U CN210425013U (en) | 2019-04-04 | 2019-04-04 | Premixing air inlet structure and gas water heater with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920465247.9U CN210425013U (en) | 2019-04-04 | 2019-04-04 | Premixing air inlet structure and gas water heater with same |
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| Publication Number | Publication Date |
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| CN210425013U true CN210425013U (en) | 2020-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116590811A (en) * | 2023-07-19 | 2023-08-15 | 新创碳谷集团有限公司 | New air mixing adjusting system and method for carbon fiber pre-oxidation furnace |
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2019
- 2019-04-04 CN CN201920465247.9U patent/CN210425013U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116590811A (en) * | 2023-07-19 | 2023-08-15 | 新创碳谷集团有限公司 | New air mixing adjusting system and method for carbon fiber pre-oxidation furnace |
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Effective date of registration: 20221228 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |