CN217209865U - Spiral vortex air supply and exhaust smoke pipe assembly and gas water heater - Google Patents

Abstract

The utility model discloses a spiral vortex gives exhaust tobacco pipe subassembly and gas heater, wherein the spiral vortex includes for exhaust tobacco pipe subassembly: the exhaust device comprises an air inlet outer pipe, an exhaust inner pipe and at least two air inlet turbulent rings, wherein the exhaust inner pipe is arranged in the air inlet outer pipe, an air inlet channel is formed between the air inlet outer pipe and the exhaust inner pipe, and an exhaust channel is arranged in the exhaust inner pipe; the vortex ring cover that admits air is located the exhaust inner tube, the lateral wall that the vortex was encircled admits air with the inside wall cooperation of the outer tube that admits air, admit air the vortex ring with form the vortex chamber that can supply the air current to pass through between the exhaust inner tube, the width an in vortex chamber is less than inlet channel's width b.

Description

Spiral vortex air supply and exhaust smoke pipe assembly and gas water heater

Technical Field

The utility model relates to a gas hot water system technical field, in particular to spiral vortex gives exhaust tobacco pipe subassembly and gas heater.

Background

Some current gas hot water equipment adopt the design of the balanced type tobacco pipe of interior outer tube combination, form inlet air channel between outer tube and the inner tube, and the inner tube is used for discharging fume, because the inboard and the high temperature flue gas contact of inner tube, the outside contacts with the air inlet air, so high temperature flue gas and air inlet air can carry out the heat transfer through the inner tube, improve the temperature of air inlet air to improve the burning operating mode. Because the exhaust flue gas and the sucked air flow are fast, the exhaust flue gas and the sucked air flow are not subjected to sufficient heat exchange, and the preheating effect of the air is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a spiral vortex gives exhaust tobacco pipe subassembly can improve the heat transfer quality of flue gas and air.

The utility model discloses still provide a gas heater who has above-mentioned spiral vortex to give exhaust tobacco pipe subassembly.

According to the utility model discloses a flue pipe subassembly is given to spiral vortex of first aspect embodiment, include: the exhaust device comprises an air inlet outer pipe, an exhaust inner pipe and at least two air inlet turbulent rings, wherein the exhaust inner pipe is arranged in the air inlet outer pipe, an air inlet channel is formed between the air inlet outer pipe and the exhaust inner pipe, and an exhaust channel is arranged in the exhaust inner pipe; the vortex ring cover that admits air is located the exhaust inner tube, the lateral wall of the vortex ring that admits air with the inside wall cooperation of the outer tube that admits air, admit air the vortex ring with form the vortex chamber that can supply the air current to pass through between the exhaust inner tube, the width an in vortex chamber is less than inlet channel's width b.

According to the utility model discloses spiral vortex gives exhaust smoke pipe subassembly has following beneficial effect at least: because the inlet channel is provided with a plurality of air inlet flow disturbing rings, and the width of the flow disturbing cavity is smaller than that of the inlet channel, the air inlet flow disturbing rings can disturb inlet air flow in the radial direction, the air flow is forced to turn in the radial direction, the axial flow rate of the air flow is slowed down to a certain extent, and the residence time of the air in the inlet channel is prolonged, so that the high-temperature flue gas of the exhaust inner pipe can transfer more heat to the flowing-in air in unit time, the flue gas and the air can fully exchange heat, the heat exchange quality is improved, and the air flow is turned in the disturbed process, so that the air flow is compressed in the direction close to the exhaust inner pipe when passing through the air inlet flow disturbing rings, the air flow contacting with the outer wall of the exhaust inner pipe is increased, and the heat exchange effect is improved.

According to some embodiments of the present invention, the air intake spoiler ring comprises a flow gathering section, a flow disturbing section and a flow expanding section which are connected in sequence, wherein a flow gathering cavity is formed between the flow gathering section and the exhaust inner tube, a flow disturbing cavity is formed between the flow disturbing section and the exhaust inner tube, a flow expanding cavity is formed between the flow expanding section and the exhaust inner tube, and the flow gathering cavity, the flow disturbing cavity and the flow expanding cavity are connected in sequence; along the airflow advancing direction of the air inlet channel, the width of the flow converging cavity is gradually narrowed, and the width of the flow diverging cavity is gradually enlarged; the inner wall of the flow disturbing cavity is respectively and smoothly connected with the inner wall of the flow gathering cavity and the inner wall of the flow expanding cavity.

According to some embodiments of the invention, the outer wall of the spoiler section has an annular groove.

According to some embodiments of the invention, at least two the inlet turbulent ring follows the length direction evenly distributed of exhaust inner tube.

According to some embodiments of the utility model, the both ends of intake turbulent ring all have the connection turn-ups, connect turn-ups outer wall with inlet channel's lateral wall cooperation.

According to some embodiments of the present invention, the exhaust passage is provided with a spiral spoiler extending spirally along a length direction of the exhaust inner pipe; and a plurality of vent holes for smoke to pass through are formed in the spiral spoiler.

According to some embodiments of the invention, a plurality of the vent holes are evenly distributed along the surface of the spiral spoiler.

According to some embodiments of the invention, the ratio of the outer diameter of the spiral spoiler to the inner diameter of the exhaust passage is 0.75 to 0.8.

According to some embodiments of the invention, the ratio of the length of the inner exhaust pipe to the pitch of the spiral spoiler is 4 to 8.

According to some embodiments of the invention, the helix angle of the helical spoilers is 45 to 60 degrees.

According to some embodiments of the present invention, the spiral spoiler includes a plurality of spiral sections and a plurality of axially extending sections, the spiral sections and the axially extending sections are alternately and smoothly connected, and the axially extending sections are along the axial extension of the inner exhaust pipe.

According to some embodiments of the present invention, the spiral spoiler includes a plurality of spiral sections and a plurality of axially extending sections, the spiral sections and the axially extending sections are alternately and smoothly connected, and the axially extending sections are along the axial extension of the inner exhaust pipe.

According to some embodiments of the invention, the inner side of the axially extending section coincides with the central axis B of the inner exhaust pipe

According to the utility model discloses a gas heater of second aspect embodiment, include the utility model discloses the spiral of above-mentioned first aspect embodiment is around flowing for exhaust stack subassembly.

According to the utility model discloses gas heater has following beneficial effect at least: because inlet channel is provided with a plurality of vortex rings that admit air to the width in vortex chamber is less than inlet channel's width, consequently the air can be by radial disturbance when flowing into the vortex chamber through the vortex ring that admits air, has effectively slowed down the circulation speed of inflow air, thereby increases the residence time of air at inlet channel, makes the high temperature flue gas of exhaust inner tube can give the air that flows in at the more heat of unit interval transmission, thereby makes flue gas and air abundant heat transfer, has improved heat transfer quality.

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 view of a spiral turbulent flow smoke supply and exhaust pipe assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of region A shown in FIG. 1;

fig. 3 is a schematic structural view of an air inlet turbulent flow ring according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a spiral spoiler according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a spiral spoiler according to another embodiment of the present invention.

Reference numerals:

100. an air intake outer tube; 110. an air intake passage; 200. an exhaust inner pipe; 210. an exhaust passage; 300. an air inlet turbulent flow ring; 310. a flow gathering section; 311. a flow collection chamber; 320. a turbulent flow section; 321. a flow-disturbing cavity; 330. a flow expansion section; 331. a flow expansion cavity; 340. an annular groove; 350. connecting the flanging; 400. spiral spoilers; 401. a helical section; 402. an axially extending section; 410. a vent hole; 420. bending the mounting part; 421. and (3) a mounting surface.

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 should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1 and 2, the spiral disturbed flow smoke supply and exhaust pipe assembly according to the embodiment of the first aspect of the present invention includes: the exhaust gas recirculation device comprises an air inlet outer pipe 100, an exhaust inner pipe 200 and at least two air inlet turbulent flow rings 300, wherein the exhaust inner pipe 200 is arranged in the air inlet outer pipe 100, an air inlet passage 110 is formed between the air inlet outer pipe 100 and the exhaust inner pipe 200, and an exhaust passage 210 is arranged in the exhaust inner pipe 200; the exhaust inner tube 200 is located to the cover of the vortex ring 300 that admits air, and the outer wall of the vortex ring 300 that admits air and the inside wall cooperation of the outer tube 100 that admits air form the vortex chamber 321 that can supply the air current to pass through between the vortex ring 300 that admits air and the exhaust inner tube 200, and the width an of vortex chamber 321 is less than the width b of inlet channel 110 to guarantee to admit air diversion vortex.

Specifically, the air inlet turbulence ring 300 is in contact with the inner side wall of the air inlet outer tube 100, and the air inlet turbulence ring 300 and the air inlet outer tube 100 can be fixedly connected without a through hole by implementing a TOX riveting process on the outer side of the air inlet outer tube 100. Of course, the inlet spoiler ring 300 may be secured within the inlet passage 110 by conventional welding or snapping.

In the above embodiment, the air inlet passage 110 is provided with the plurality of air inlet turbulent flow rings 300, and the width of the turbulent flow cavity 321 is smaller than the width of the air inlet passage 110, so the air inlet turbulent flow rings 300 can radially disturb the inlet airflow to force the airflow to turn in the radial direction, and the axial flow rate of the airflow is slowed down to a certain extent, so that the residence time of the air in the air inlet passage 110 is increased, and the high-temperature flue gas in the exhaust inner pipe 200 can transfer more heat to the flowing-in air in unit time, so that the flue gas and the air can fully exchange heat, the heat exchange quality is improved, and the airflow is turned in a disturbed process, so that the airflow is compressed in a direction close to the exhaust inner pipe 200 when passing through the air inlet turbulent flow rings 300, the airflow contacting with the outer wall of the exhaust inner pipe 200 is increased, and the heat exchange effect is improved.

In some embodiments of the present invention, as shown in fig. 2 and 3, the air intake turbulent flow ring 300 includes a flow collecting section 310, a flow disturbing section 320, and a flow expanding section 330, which are connected in sequence, wherein a flow collecting cavity 311 is formed between the flow collecting section 310 and the exhaust inner tube 200, a flow disturbing cavity 321 is formed between the flow disturbing section 320 and the exhaust inner tube 200, a flow expanding cavity 331 is formed between the flow expanding section 330 and the exhaust inner tube 200, and the flow collecting cavity 311, the flow disturbing cavity 321, and the flow expanding cavity 331 are connected in sequence; along the airflow advancing direction of the air inlet channel 110, the width of the flow collecting cavity 311 is gradually narrowed, and the width of the flow expanding cavity 331 is gradually enlarged; the inner wall of the flow disturbing cavity 321 is smoothly connected with the inner wall of the flow collecting cavity 311 and the inner wall of the flow expanding cavity 331 respectively. The side wall of the flow gathering cavity 311 is gradually narrowed along the flowing direction of the air flow, and the air flow can gather into the turbulent flow cavity 321 when passing through the flow gathering cavity 311, so that the air flow is disturbed in the radial direction, the air flow is forced to be compressed in the direction close to the exhaust inner pipe 200, and the heat exchange effect is improved; along the circulation direction of air current, expand class chamber 331 and be the form that enlarges gradually, the air current that flows out from vortex chamber 321 spreads along the chamber wall of expanding class chamber 331, has further slowed down the axial velocity of flow, improves the heat transfer effect.

The utility model discloses an in some embodiments, the outer wall of vortex section 320 has ring channel 340, through setting up ring channel 340 for vortex section 320's transversal V font of personally submitting can alleviate the whole weight of the vortex ring 300 that admits air on the one hand, and on the other hand can reduce the area of contact of the vortex ring 300 lateral wall that admits air and inlet channel 110 lateral wall, prevents that the frictional force between vortex ring 300 and the inlet channel 110 lateral wall is too big and increase the assembly degree of difficulty.

The utility model discloses an in some embodiments, the vortex ring 300 that admits air is equipped with five, and certain interval evenly distributed is followed along the length direction of exhaust inner tube 200 to five vortex rings 300 that admit air, further improves the vortex effect to the air current that admits air, improves the heat transfer quality of air and flue gas. Of course, the specific number of the intake spoiler rings 300 may also be two, three, four or more than five, and may be set according to actual requirements, which is not limited herein.

The utility model discloses an in some embodiments, the both ends of admitting air turbulence ring 300 all have and connect turn-ups 350, connect the outer wall of turn-ups 350 and inlet channel 110's lateral wall cooperation, connect turn-ups 350 through the setting, and the area of contact of the both ends of moderate increase admitting air turbulence ring 300 and inlet channel 110 lateral wall improves the installation steadiness of admitting air turbulence ring 300.

In some embodiments of the utility model, as shown in fig. 4, exhaust passage 210 is equipped with spiral spoiler 400, spiral spoiler 400 extends along the length direction spiral of exhaust inner tube 200, through setting up spiral spoiler 400, make the flue gas that is close to exhaust passage 210 center can follow the surface spiral of spiral spoiler 400 and advance, with first spiral passage's flue gas cooperation, realize that exhaust passage 210 and first spiral passage's common spiral of flue gas advances, the circulation stroke and the dwell time of flue gas at exhaust inner tube 200 have been improved, consequently, the heat exchange efficiency and the heat transfer quality of flue gas and air have been improved.

Further, in some embodiments, the spiral spoiler 400 is provided with a plurality of vent holes 410 for passing the smoke, and the vent holes 410 on the spiral spoiler 400 can allow the airflow to pass, so as to avoid the spiral spoiler 400 from causing too much obstruction to the smoke, and ensure that the smoke achieves a reasonable balance in the smoothness of circulation and the residence time.

Further, in some embodiments, the plurality of vent holes 410 are uniformly distributed along the surface of the spiral spoiler 400, so that the flue gas flow can uniformly flow in the exhaust channel 210, and the smoothness of the flue gas flow is ensured.

Further, in some of the above embodiments, the ratio of the outer diameter of the spiral spoiler 400 to the inner diameter of the exhaust channel 210 is 0.75 to 0.8, so that a certain gap exists between the outer side of the spiral spoiler 400 and the side wall of the exhaust channel 210, the cross-sectional area for smoke to flow through is increased, and smooth emission of smoke is facilitated.

Further, in some embodiments, the ratio of the length of the inner exhaust pipe 200 to the pitch P of the spiral spoiler 400 is 4 to 8, wherein, as shown in fig. 1, the pitch of the spiral spoiler 400 refers to the axial distance P between two adjacent screw structures at the same position, and thus, the proper number of screw structures are provided in the exhaust channel 210, so that the flue gas has a better balance between the unobstructed exhaust and heat exchange time.

Further, in some of the above embodiments, the helical angle of the spiral spoiler 400 is 45 degrees to 60 degrees, which is also favorable for better balance between the smoke discharging and the heat exchanging time.

In some embodiments of the present invention, the two ends of the spiral spoiler 400 are provided with the bending installation portions 420, the bending installation portions 420 are smoothly connected with the end portions of the spiral spoiler 400, the bending installation portions 420 have the installation surfaces 421, and the installation surfaces 421 are connected with the side walls of the exhaust passages 210. Specifically, the mounting surface 421 may be fixedly connected to the sidewall of the exhaust duct 210 by riveting, welding, or the like, and since the two ends of the spiral spoiler 400 are provided with the bent mounting portions 420, the spiral spoiler 400 may be stably fixed in the exhaust duct 210. Preferably, after the mounting surface 421 is attached to the side wall of the exhaust passage 210, the outer wall of the exhaust inner pipe 200 may be subjected to TOX riveting to achieve non-perforation fixation, and the processing is more convenient than welding.

In some embodiments of the present invention, the spiral spoiler 400 includes a plurality of spiral sections 401 and a plurality of axial extension sections 402, the spiral sections 401 and the axial extension sections 402 are alternately connected smoothly, the axial extension sections 402 extend along the axial direction of the exhaust inner tube 200, wherein the spiral sections 401 can guide the air flow, promote the air flow to rotate around the axis of the exhaust inner tube 200, slow down the axial velocity of the air flow, the axial extension sections 402 are used for connecting two adjacent spiral sections 401, and properly guide the air flow, so that the air flow can smoothly and continuously transit to the next spiral section 401.

Further, in some embodiments described above, as shown in fig. 5, the inner side of the axial extension section 402 coincides with the central axis B of the exhaust inner tube 200, and thus the arrangement can ensure that the flue gas flows along the wall surface of the spiral spoiler 400 toward the wall surface of the exhaust channel 210, thereby improving the heat exchange efficiency, and compared with the existing flue gas turbulence structure, the cross-sectional area of the flue gas flow is larger, the resistance to the flue gas flow is small, and the flue gas flow is favorable for the smooth emission of the flue gas.

According to the utility model discloses a gas heater of second aspect embodiment, include the utility model discloses the spiral vortex of above-mentioned first aspect embodiment gives exhaust fume pipe subassembly.

As shown in the figure, the exhaust inner pipe 200 is communicated with the smoke collecting hood of the gas water heater for discharging waste high-temperature smoke, and the intake outer pipe 100 is communicated with the inner cavity of the housing of the gas water heater, so that the fan in the housing can directly suck intake air into the combustion chamber, and the normal operation of the gas water heater is ensured.

In addition, the gas water heater of the above embodiment may be a common gas water heater, such as a water heater without a heating function, a water heater, a wall-hanging stove with a heating function, a heating stove, and so on.

In the above embodiment, the air inlet passage 110 is provided with the plurality of air inlet turbulence rings 300, and the width of the turbulence cavity 321 is smaller than that of the air inlet passage 110, so that air can be radially disturbed when flowing into the turbulence cavity 321 passing through the air inlet turbulence rings 300, the circulation speed of the inflowing air is effectively slowed down, the residence time of the air in the air inlet passage 110 is prolonged, the high-temperature flue gas of the exhaust inner pipe 200 can transfer more heat to the inflowing air in unit time, the flue gas and the air exchange heat sufficiently, and the heat exchange quality is improved.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The present embodiment has been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the present invention.

Claims (14)

1. The utility model provides a spiral vortex gives exhaust fume pipe subassembly which characterized in that includes:

an intake outer pipe (100);

the exhaust inner pipe (200) is arranged in the air inlet outer pipe (100), an air inlet channel (110) is formed between the air inlet outer pipe (100) and the exhaust inner pipe (200), and an exhaust channel (210) is arranged in the exhaust inner pipe (200);

at least two air inlet flow disturbing rings (300), the air inlet flow disturbing ring (300) is sleeved on the exhaust inner pipe (200), the outer side wall of the air inlet flow disturbing ring (300) is matched with the inner side wall of the air inlet outer pipe (100), a flow disturbing cavity (321) allowing air flow to pass through is formed between the air inlet flow disturbing ring (300) and the exhaust inner pipe (200), and the width a of the flow disturbing cavity (321) is smaller than the width b of the air inlet channel (110).

2. The spiral turbulator fume exhaust pipe assembly of claim 1,

the air inlet turbulent flow ring (300) comprises a flow gathering section (310), a turbulent flow section (320) and a flow expanding section (330) which are sequentially connected, a flow gathering cavity (311) is formed between the flow gathering section (310) and the exhaust inner pipe (200), a flow disturbing cavity (321) is formed between the turbulent flow section (320) and the exhaust inner pipe (200), a flow expanding cavity (331) is formed between the flow expanding section (330) and the exhaust inner pipe (200), and the flow gathering cavity (311), the flow disturbing cavity (321) and the flow expanding cavity (331) are sequentially communicated; along the airflow traveling direction of the air inlet channel (110), the width of the flow gathering cavity (311) is gradually narrowed, and the width of the flow expansion cavity (331) is gradually enlarged; the inner wall of the flow disturbing cavity (321) is smoothly connected with the inner wall of the flow converging cavity (311) and the inner wall of the flow expanding cavity (331) respectively.

3. The spiral turbulator fume exhaust pipe assembly of claim 2,

the outer wall of the spoiler section (320) is provided with an annular groove (340).

4. The spiral turbulator fume exhaust pipe assembly of claim 1,

at least two air inlet turbulence rings (300) are uniformly distributed along the length direction of the exhaust inner pipe (200).

5. The spiral turbulator fume exhaust pipe assembly of claim 1,

the two ends of the air inlet turbulent flow ring (300) are provided with connecting flanges (350), and the outer walls of the connecting flanges (350) are matched with the side walls of the air inlet channel (110).

6. The spiral turbulator fume exhaust pipe assembly of claim 1,

the exhaust channel (210) is provided with a spiral spoiler (400), and the spiral spoiler (400) extends spirally along the length direction of the exhaust inner pipe (200);

the spiral spoiler (400) is provided with a plurality of vent holes (410) for smoke to pass through.

7. The spiral turbulator fume passing tube assembly of claim 6,

the plurality of vent holes (410) are uniformly distributed along the surface of the spiral spoiler (400).

8. The spiral turbulator fume exhaust pipe assembly of claim 6,

the ratio of the outer diameter of the spiral spoiler (400) to the inner diameter of the exhaust passage (210) is 0.75 to 0.8.

9. The spiral turbulator fume exhaust pipe assembly of claim 6,

the ratio of the length of the exhaust inner pipe (200) to the pitch of the spiral spoiler (400) is 4-8.

10. The spiral turbulator fume exhaust pipe assembly of claim 6,

the spiral angle of the spiral spoiler (400) is 45 to 60 degrees.

11. The spiral turbulator fume exhaust pipe assembly of claim 6,

the both ends of spiral spoiler (400) are equipped with installation department (420) of bending, bend installation department (420) with the tip smooth connection of spiral spoiler (400), installation department (420) of bending has installation face (421), installation face (421) with the cooperation is connected to the lateral wall of exhaust passage (210).

12. The spiral turbulator fume exhaust pipe assembly of claim 6,

the spiral spoiler (400) comprises a plurality of spiral sections (401) and a plurality of axial extension sections (402), the spiral sections (401) and the axial extension sections (402) are alternately and smoothly connected, and the axial extension sections (402) extend along the axial direction of the exhaust inner pipe (200).

13. The spiral turbulator fume duct assembly of claim 12,

the inner side of the axial extension (402) coincides with the central axis B of the exhaust inner pipe (200).

14. A gas water heater, comprising:

the spiral turbulator fume duct assembly of any one of claims 1 to 13.

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