CN211952975U - Smoke exhaust pipeline and heating and ventilation equipment - Google Patents

Abstract

The utility model provides a smoke exhaust pipe and warm equipment of leading to. The exhaust duct includes: an outer conduit; the inner pipeline is arranged in the outer pipeline, a smoke exhaust hole is formed in the end part of the inner pipeline, and the end part of the inner pipeline extends out of the outer pipeline along the length direction of the inner pipeline; one end of the ventilation pipe is communicated with the inner pipeline, an air outlet is formed in the other end of the ventilation pipe, and the other end of the ventilation pipe extends to the end portion. The utility model provides a smoke exhaust pipe has increased the ventilation pipe, can draw forth the outside to the tip of interior pipeline with the high temperature flue gas in the interior pipeline to melt the ice tumour when the condition of ice tumour is come to the end of interior pipeline, and effectively suppress the condensation of vapor at the tip, thereby reduce the hidden danger of ice tumour, improve the stability in use and the use reliability of warm equipment that leads to. In addition, potential safety hazards to passers-by and the like can be reduced by eliminating the ice tumors.

Description

Smoke exhaust pipeline and heating and ventilation equipment

Technical Field

The utility model relates to a warm technical equipment field that leads to particularly, relates to a discharge flue and a warm equipment of leading to including above-mentioned discharge flue.

Background

At present, some warm equipment of leading to, for example, exhaust pipe is all installed to atmospheric type hanging stove, and in the northern part area that the temperature is lower, the phenomenon of the knot that freezes appears easily in the tobacco pipe head of exhaust pipe, can influence the use of atmospheric type hanging stove to if the knot accumulation is too long, still can bring the potential safety hazard for passerby etc. that passes by.

SUMMERY OF THE UTILITY MODEL

In order to improve at least one of the above technical problems, an object of the present invention is to provide a smoke exhaust duct.

Another object of the utility model is to provide a warm equipment of leading to including above-mentioned exhaust pipe.

To achieve the above object, an exhaust duct includes: an outer conduit; the inner pipeline is arranged in the outer pipeline, a smoke exhaust hole is formed in the end part of the inner pipeline, and the end part extends out of the outer pipeline along the length direction of the inner pipeline; one end of the ventilation pipe is communicated with the inner pipeline, an air outlet is formed in the other end of the ventilation pipe, and the other end of the ventilation pipe extends to the end portion.

The smoke exhaust pipeline provided by the technical scheme comprises an outer pipeline, an inner pipeline and a ventilation pipe. The outer pipeline and the inner pipeline form a double-layer pipeline structure, the ventilation pipe is connected with the inner pipeline through the ventilation pipe, high-temperature smoke in the inner pipeline can be led out to the outer side of the end part of the inner pipeline, and therefore ice accretions are melted when the ice accretions are formed on the end part of the inner pipeline, and the smoke can be normally discharged from a smoke exhaust hole in the end part. Wherein the temperature of the high-temperature flue gas is about 130 ℃.

In addition, in the use process of the heating and ventilation equipment, the end part of the inner pipeline is purged by high-temperature smoke exhausted by the ventilation pipe, so that the condensation of water vapor at the end part can be effectively prevented, the hidden danger of freezing tumors is reduced, and the use stability and the use reliability of the heating and ventilation equipment are improved. In addition, potential safety hazards to passers-by and the like can be reduced by eliminating the ice tumors.

Additionally, the utility model provides an among the above-mentioned technical scheme exhaust pipe can also have following additional technical characterstic:

in the above technical scheme, the end portion includes a smoke exhaust area and a smoke exhaust blind area, the smoke exhaust hole is arranged in the smoke exhaust area, and the projection of the air outlet on the inner pipeline is located on the smoke exhaust blind area.

The interior pipeline that this scheme provided is equipped with the row's cigarette district and discharges fume the blind area, arranges the cigarette district and discharges fume the blind area and set up the tip of interior pipeline along the extending direction of interior pipeline, arrange the cigarette district promptly and discharge fume the blind area and locate on the part that the interior pipeline extends outer pipeline. Wherein, the projection of air outlet on the inner tube way is located the exhaust fume blind area, means that the ventilation pipe extends through the exhaust fume district for the air outlet of ventilation pipe extends to the exhaust fume blind area. Therefore, a part of high-temperature smoke is discharged through the smoke discharge holes, circulating high-temperature smoke exists in the smoke discharge area with the smoke discharge holes, and the smoke discharge area can be swept through the high-temperature smoke so as to prevent water vapor from freezing in the smoke discharge area. Relatively, the blind area of discharging fume is not equipped with the exhaust hole, through setting up the air outlet of ventilation pipe in the blind area of discharging fume department for high temperature flue gas can sweep the blind area of discharging fume, and icing in the blind area of discharging fume is in order to restrain the vapor. Like this, to the inside region of high temperature flue gas through the interior pipeline less or that do not pass through, lead to the outside of this regional interior pipeline with high temperature flue gas for the position of freezing tumour on the tip of interior pipeline more easily can be through the sweeping of high temperature flue gas, has further reduced the hidden danger of freezing tumour on the tip, thereby further improves the stability in use and the use reliability of heating and ventilation equipment.

In any of the above technical solutions, the ventilation pipe includes an air inlet pipe section, a middle pipe section and an air outlet pipe section; wherein the gas inlet pipe section is arranged in the inner pipeline; the middle pipe section is connected with the air inlet pipe section in a turning manner; the air outlet pipe section is connected with the middle pipe section in a turning mode, and the pipe orifice of the air outlet pipe section forms the air outlet.

The ventilation pipe provided by the scheme comprises an air inlet pipe section, a middle pipe section and an air outlet pipe section. The ventilation pipe leads out smoke from the inner pipeline in a bending mode and conveys the smoke to the end part of the inner pipeline, and the smoke exhaust device is simple in structure and convenient to produce and assemble. And the air outlet is formed by the pipe orifice of the air outlet pipe section, and extra holes do not need to be formed in the ventilation pipe.

In the above technical solution, the air inlet pipe section is arranged in parallel with the inner pipe; and/or the outer wall surface of the air inlet pipe section is connected with the inner wall surface of the inner pipeline.

Through setting up intake pipe section and interior pipeline parallel, make the volume high temperature flue gas more easily get into in the ventilation pipe in the interior pipeline. And the outer wall surface of the air inlet pipe section is connected with the inner wall surface of the inner pipeline, so that the firmness of the connection between the ventilation pipe and the inner pipeline can be improved, for example, the air inlet pipe section is fixedly connected with the inner pipeline in a welding mode.

In the above technical scheme, a through hole is formed in the side wall of the inner pipeline, the middle pipe section penetrates through the through hole, and the projection of the through hole on the outer pipeline is located on the outer pipeline.

The through hole is formed in the inner pipeline and used for arranging the ventilation pipe to lead out high-temperature smoke in the inner pipeline. The projection of the through hole on the outer pipeline is positioned on the outer pipeline, which means that the through hole is positioned on the inner pipeline in the outer pipeline and is not arranged at the end part of the inner pipeline. Therefore, the through holes are formed in the inner pipeline, so that high-temperature flue gas in the inner pipeline is conveyed to the outside of the inner pipeline from the inside of the inner pipeline, and the end part of the inner pipeline is swept by the high-temperature flue gas from the outside. In addition, the part of the inner pipeline extending out of the outer pipeline is the end part of the inner pipeline, the through hole is arranged at the non-end part position of the inner pipeline, the middle pipeline section of the ventilation pipe is arranged in the outer pipeline, the middle pipeline section can be prevented from shielding a fresh air inlet of the outer pipeline, the fresh air inlet is an annular space between the outer wall of the inner pipeline and the inner wall of the outer pipeline, the possibility of interference between the through hole and a smoke exhaust hole after the end part is arranged can also be avoided, the arrangement space of the smoke exhaust hole occupied by the through hole is avoided, the number of the smoke exhaust holes is reduced, the position of the through hole is reasonably arranged, and the smoke exhaust effect.

In the above technical solution, the outlet pipe section is arranged in parallel with the inner pipe; and/or the outer wall surface of the air outlet pipe section is connected with the outer wall surface of the inner pipeline.

Through giving vent to anger pipeline section and interior pipeline parallel arrangement, make high temperature flue gas can smoothly discharge from the air outlet, reduce the possibility that other pipelines sheltered from the air outlet. And the outer wall surface of the air outlet pipe section is connected with the outer wall surface of the inner pipeline, so that the connection firmness of the ventilation pipe and the inner pipeline can be improved, for example, the air outlet pipe section is fixedly connected with the inner pipeline in a welding mode.

In any of the above technical solutions, the ventilation pipe and the smoke exhaust hole are arranged at an interval.

Through setting up ventilation pipe and smoke vent interval, can avoid the ventilation pipe to shelter from the smoke vent, help making high temperature flue gas discharge as early as possible, the guarantee warms up the availability factor who leads to the equipment.

In any one of the above technical solutions, the smoke exhaust duct further includes: the elbow comprises an inner pipe and an outer pipe, the inner pipe is connected with the inner pipeline, and the outer pipe is connected with the outer pipeline; the vent pipe is arranged at one end far away from the elbow.

The smoke exhaust pipeline provided by the scheme further comprises an elbow, and the elbow is connected with the inner pipeline and the outer pipeline, so that the conveying direction of high-temperature smoke is conveniently changed. The high-temperature flue gas discharge port is usually located at the top of the house, and the high-temperature flue gas is conveyed towards the top of the house and then is discharged outside the house through the elbow by turning. Wherein, the elbow can be a corrugated elbow. Further, the angle is 90 degrees, and of course, the bending angle of the corrugated pipe may be designed differently according to actual situations, for example, 85 degrees, 60 degrees, and the like. When the angle is set to be 85 degrees or the like and is closer to 90 degrees, the end part of the smoke exhaust pipeline can be pressed downwards, the smoke exhaust pipeline is prevented from being entered by water vapor, and the position of the smoke exhaust pipeline condensed by the water vapor is reduced.

In any one of the above technical solutions, the ventilation pipe is disposed on one side of the direction in which the elbow turns with respect to the inner pipe.

The direction one side that the elbow turned is located for the interior pipeline to the ventilation pipe that this scheme provided, can understand, and the density of high temperature flue gas is less than the density of air, can the upflow, through setting up the ventilation pipe in the downside that leans on the interior pipeline to with the below of the tip of pipeline including the air outlet setting, help high temperature flue gas to sweeping of tip, in order to suppress vapor more effectively and freeze at the tip, thereby eliminate the frozen tumor hidden danger.

The utility model discloses technical scheme of second aspect provides a warm equipment of ventilating, include: a body; and the smoke exhaust pipeline in any one of the technical schemes of the first aspect is connected with the body.

The utility model discloses the heating and ventilation equipment that technical scheme of second aspect provided, because of including any one in the first aspect technical scheme exhaust flue, therefore have all beneficial effects that any above-mentioned technical scheme had, no longer describe here.

The heating and ventilation equipment can be a gas heating water heater, a wall-mounted furnace, a gas water heater and the like.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, 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 view of a smoke exhaust duct according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a smoke exhaust duct according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a smoke exhaust duct according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the heating and ventilating device according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:

100 smoke exhaust pipes; 10 outer pipelines; 20 inner pipes; 21 end portion; 211 a smoke exhaust area; 212, smoke exhaust dead zone; 22 smoke exhaust holes; 30 ventilating pipes; 31 air outlet; 301 an air intake duct section; 302 an intermediate pipe section; 303 an air outlet pipe section; 40 elbows; 200 heating and ventilation equipment; 210 body.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Smoke exhaust duct 100 and warm-up apparatus 200 in some embodiments of the invention are described below with reference to fig. 1-4.

Some embodiments of the present application provide an exhaust duct 100, as shown in fig. 1 and 2, comprising an outer duct 10, an inner duct 20 and a ventilation duct 30.

As shown in fig. 1, the inner pipe 20 is disposed inside the outer pipe 10, a smoke discharge hole 22 is disposed at an end portion 21 of the inner pipe 20, and the end portion 21 extends out of the outer pipe 10 along a length direction of the inner pipe 20. The outer pipeline 10 and the inner pipeline 20 form a double-layer pipeline structure, the ventilation pipe 30 is arranged to connect the ventilation pipe 30 with the inner pipeline 20, high-temperature smoke in the inner pipeline 20 can be led out to the outer side of the end portion 21 of the inner pipeline 20, and therefore the ice accretion is melted when the ice accretion is formed on the end portion 21 of the inner pipeline 20, and the smoke can be normally discharged from the smoke discharge hole 22 of the end portion 21.

One end of the ventilation pipe 30 is communicated with the inner pipe 20, the other end of the ventilation pipe 30 is provided with an air outlet 31, and the other end of the ventilation pipe 30 extends to the end part 21. In the using process of the heating and ventilation equipment 200, the end 21 of the inner pipeline 20 is purged by the high-temperature smoke exhausted by the ventilation pipe 30, so that the condensation of water vapor at the end 21 can be effectively prevented, the hidden danger of icing is reduced, and the faults that the heating and ventilation equipment 200 is not ignited, flameout occurs in the operation and the like due to the fact that air is sucked and exhausted by the heating and ventilation equipment 200 are reduced. Further, the smoke exhaust hole 22 of the smoke exhaust duct 100 provided by the embodiment is not easy to be blocked due to freezing, so that the smoke exhaust effect is not easily affected, and the smoke exhaust duct is convenient to use in the cold regions such as northeast and northwest regions of China.

In some embodiments, as shown in fig. 2, the end portion 21 includes a smoke exhaust area 211 and a smoke exhaust blind area 212, the smoke exhaust hole 22 is disposed in the smoke exhaust area 211, and the projection of the air outlet 31 on the inner duct 20 is located on the smoke exhaust blind area 212. Wherein the projected direction is a direction directed from the exhaust pipe 30 toward the inner pipe 20.

The air outlet 31 of the ventilation pipe 30 provided by the embodiment is arranged at the smoke exhausting blind area 212. It can be understood that a part of the high temperature flue gas is discharged through the smoke discharge holes 22, and the smoke discharge area 211 provided with the smoke discharge holes 22 has the circulating high temperature flue gas, so that the smoke discharge area 211 can be swept through the high temperature flue gas to prevent the water vapor from freezing in the smoke discharge area 211. Correspondingly, the smoke exhaust blind area 212 is not provided with the smoke exhaust hole 22, and the air outlet 31 of the ventilation pipe 30 is arranged at the smoke exhaust blind area 212, so that the high-temperature smoke can purge the smoke exhaust blind area 212, and the freezing of water vapor in the smoke exhaust blind area 212 is restrained. In this way, for the internal area of the inner pipe 20 where the high-temperature flue gas passes through less or not, the high-temperature flue gas is led to the outside of the inner pipe 20 in the area, so that the part on the end portion 21 of the inner pipe 20, which is more prone to forming ice nodules, can be swept by the high-temperature flue gas, the hidden danger of forming ice nodules on the end portion 21 is further reduced, and the use stability and the use reliability of the heating and ventilation device 200 are further improved.

It can be understood that the air outlet 31 of the ventilation pipe 30 can also be used as a discharge port of high-temperature flue gas, and on the basis of the function of discharging the high-temperature flue gas with the smoke discharge holes 22 on the end portion 21, the ventilation pipe also has the function of purging the smoke discharge blind area 212 through the high-temperature flue gas, so that the hidden danger of the frozen nodules at the smoke discharge blind area 212 is reduced. Meanwhile, the size of the ventilation pipe 30 and the position of the air outlet 31 are reasonably arranged, so that the pipeline of the ventilation pipe 30 is simplified, and high-temperature smoke is discharged as soon as possible. Meanwhile, the arrangement position of the air outlet 31 of the ventilation pipe 30 does not influence the normal use of the inner pipeline 20, and the ventilation pipe does not extend beyond the inner pipeline, so that the increase of the overall length of the whole smoke exhaust pipeline can be avoided, and the transportation cost is increased and the attractiveness of the smoke exhaust pipeline after installation is influenced.

In some embodiments, as shown in FIG. 1, ventilation tube 30 includes an inlet tube segment 301, an intermediate tube segment 302, and an outlet tube segment 303; wherein the gas inlet pipe section 301 is arranged in the inner pipeline 20; the middle pipe section 302 is connected with the air inlet pipe section 301 in a turning way; the air outlet pipe section 303 is connected with the middle pipe section 302 in a turning way, and the pipe orifice of the air outlet pipe section 303 forms an air outlet 31.

Ventilation tube 30 provided in this embodiment includes an inlet tube segment 301, an intermediate tube segment 302, and an outlet tube segment 303. The ventilation pipe 30 leads out the smoke from the inner pipeline 20 in a bending mode and conveys the smoke to the position of the end part 21 of the inner pipeline 20, and the ventilation pipe is simple in structure and convenient to produce and assemble. And no additional hole is formed in the ventilation pipe 30 by forming the air outlet 31 by the pipe orifice of the air outlet pipe section 303.

In some embodiments, as shown in FIG. 1, intake pipe section 301 is disposed parallel to inner conduit 20. By arranging the air inlet pipe section 301 in parallel with the inner pipeline 20, the high-temperature flue gas in the inner pipeline 20 can enter the ventilation pipe 30 more easily.

In some embodiments, as shown in FIG. 1, the outer wall surface of intake pipe section 301 is connected to the inner wall surface of inner conduit 20. By connecting the outer wall surface of the intake pipe section 301 with the inner wall surface of the inner pipe 20, the firmness of the connection between the vent pipe 30 and the inner pipe 20 can be improved, for example, the intake pipe section 301 and the inner pipe 20 are fixedly connected by welding.

In some embodiments, as shown in fig. 1, the inner pipe 20 has a through hole on a sidewall thereof, and the middle pipe section 302 is disposed in the through hole, and a projection of the through hole on the outer pipe 10 is located on the outer pipe 10.

The inner pipe 20 is a circular pipe, and the projection direction of the through hole is the radial direction of the inner pipe 20, that is, the projection of the through hole on the outer pipe 10 along the radial direction of the inner pipe 20 is located on the outer pipe 10.

The high temperature flue gas in the inner pipe 20 is transported from the inside of the inner pipe 20 to the outside of the inner pipe 20 by providing through holes in the inner pipe 20. The part of the inner pipeline 20 extending out of the outer pipeline 10 is the end part 21 of the inner pipeline 20, and the through hole is arranged at the position of the non-end part 21 of the inner pipeline 20, so that on one hand, the middle pipe section 302 is prevented from shielding a fresh air inlet of the outer pipeline 10, and on the other hand, the possibility of interference between the through hole and the smoke discharge hole 22 is reduced.

In some embodiments, as shown in FIG. 1, outlet tube segment 303 is disposed parallel to inner conduit 20. Through setting up outlet pipe section 303 and interior pipeline 20 parallel, make high temperature flue gas can smoothly discharge from air outlet 31, reduce the possibility that other pipelines shelter from air outlet 31.

In some embodiments, as shown in FIG. 1, the outer wall surface of outlet pipe segment 303 is connected to the outer wall surface of inner pipe 20. The firmness of the connection between the ventilation pipe 30 and the inner pipe 20 can be improved by connecting the outer wall surface of the gas outlet pipe section 303 with the outer wall surface of the inner pipe 20, for example, the gas outlet pipe section 303 and the inner pipe 20 are fixedly connected by welding.

In some embodiments, as shown in FIG. 1, the ventilation tube 30 is spaced from the smoke evacuation holes 22.

Through setting up ventilation pipe 30 and smoke vent 22 interval, can avoid ventilation pipe 30 to shelter from smoke vent 22, help making the high temperature flue gas discharge as early as possible, the guarantee warms up the availability factor of leading to equipment 200.

In some embodiments, as shown in FIG. 3, the smoke evacuation duct 100 further comprises an elbow 40, the elbow 40 comprising an inner duct connected to the inner duct 20 and an outer duct connected to the outer duct 10; the vent tube 30 is located at an end remote from the elbow 40.

The smoke exhaust duct 100 provided by this embodiment further includes an elbow 40, and the elbow 40 is connected to the inner duct 20 and the outer duct 10, so as to conveniently change the conveying direction of the high-temperature smoke. The exhaust port of the high temperature flue gas is usually located at the top of the house, and the high temperature flue gas is discharged to the outside of the house after being conveyed toward the top of the house by being turned by the elbow 40. As shown in fig. 3, the elbow 40 turns and extends downward away from the end of the inner conduit 20, and the vent tube 30 is disposed below the inner conduit 20.

Further, as shown in fig. 3, the ventilation pipe 30 is provided on the side of the direction in which the elbow 40 turns with respect to the inner pipe 20.

The ventilation pipe 30 provided in this embodiment is disposed on one side of the elbow 40 in the turning direction with respect to the inner pipe 20, and it can be understood that the high-temperature flue gas, which has a density lower than that of the air, will flow upward, and the ventilation pipe 30 is disposed on the lower side of the inner pipe 20, and the air outlet 31 is disposed below the end portion 21 of the inner pipe 20, so as to facilitate the high-temperature flue gas to purge the end portion 21, so as to more effectively prevent the water vapor from freezing at the end portion 21, thereby eliminating the potential risk of freezing.

Some embodiments of the present application provide an heating and ventilation device 200, comprising a body 210 and the smoke exhaust duct 100 of any of the above embodiments.

As shown in FIG. 4, smoke exhaust duct 100 is connected to body 210. The heating and ventilation device 200 may be a gas heating water heater, a wall-hanging stove, a gas water heater, etc.

The smoke exhaust pipeline and the heating and ventilation equipment provided by the application are specifically described below by taking an atmospheric wall-mounted furnace as an example.

At present, in the area with low temperature in the northern part, the smoke exhaust pipeline 100 used by the atmospheric wall-hanging furnace can generate the phenomenon that the end part 21 of the smoke exhaust pipeline 100 slowly forms ice nodules, if the ice nodules are accumulated too long, potential safety hazards can be brought to passers-by and the like, and once the ice nodules are smashed, the consequences are unreasonable. The existing atmospheric wall-hanging furnace mostly adopts a mode of opening holes on the circumference of the smoke exhaust pipeline 100 for smoke exhaust and air suction, and the temperature of high-temperature smoke is about 130 ℃, so the main reason of the icing on the position of the end part 21 is considered to be that the end part 21 comprises a smoke exhaust blind area 212, and the high-temperature smoke does not pass through or passes through a small amount of the smoke exhaust blind area 212, so that water vapor is condensed and slowly accumulated to form the icing.

To this end, in one embodiment of the present application, a flue duct 100 for an atmospheric wall-hanging stove is provided. The mode of directly flushing high-temperature smoke in the smoke exhaust blind area 212 of the smoke exhaust pipeline 100 of the existing wall-mounted furnace is adopted, so that the high-temperature smoke is continuously blown and swept below the smoke exhaust blind area 212 of the smoke exhaust pipeline 100, the water vapor is prevented from freezing at the position, and the hidden danger of freezing tumors is eliminated.

Specifically, the smoke exhaust duct 100 comprises an elbow 40 and a straight pipe section (a double-layer duct structure formed by the outer duct 10 and the inner duct 20), a ventilation pipe 30 is additionally arranged at a smoke exhaust hole 22, a hole is formed in a proper position of the smoke exhaust duct 100, the ventilation pipe 30 is inserted into the smoke exhaust hole, one end of the ventilation pipe 30 is connected to the inner duct 20 of the smoke exhaust duct 100, the other end of the ventilation pipe 30 extends to the end portion 21 of the smoke exhaust duct 100, and the outer side of the inner duct 20 is opposite to the position below a smoke exhaust blind area 212 of the smoke exhaust duct. The ventilation pipe 30 and the inner pipe 20 of the smoke exhaust pipe 100 are fixed by welding or the like in a manner of being firmly fixed.

Thus, the atmospheric wall-hanging furnace and smoke exhaust duct 100 provided by the embodiment has at least the following beneficial effects: through carrying out the mode that direct high temperature flue gas erodees to the blind area 212 of discharging fume of current hanging fire exhaust pipe 100, make the blind area 212 below of discharging fume pipe 100 continuously have the high temperature flue gas to sweep, the suppression vapor freezes here to eliminate and freeze tumour hidden danger, make discharge fume pipe 100 can smoothly discharge fume, and then reduce the air admission that influences atmosphere formula hanging stove, discharge fume, cause atmosphere formula hanging stove not to ignite, the possibility of flame-out scheduling problem in the operation. In addition, the smoke exhaust duct 100 in this embodiment directly guides the discharged high-temperature smoke to the position of the frozen nodules, and the used modification materials are few, so the smoke exhaust duct 100 also has the characteristics of simple structure and easy production.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", 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 of the present invention and simplification of description, but do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An exhaust duct, comprising:

an outer conduit;

the inner pipeline is arranged in the outer pipeline, a smoke exhaust hole is formed in the end part of the inner pipeline, and the end part extends out of the outer pipeline along the length direction of the inner pipeline;

one end of the ventilation pipe is communicated with the inner pipeline, an air outlet is formed in the other end of the ventilation pipe, and the other end of the ventilation pipe extends to the end portion.

2. Smoke exhaust duct according to claim 1,

the end part comprises a smoke exhaust area and a smoke exhaust blind area, the smoke exhaust hole is formed in the smoke exhaust area, and the projection of the air outlet on the inner pipeline is located on the smoke exhaust blind area.

3. Smoke exhaust duct according to claim 1,

the ventilation pipe comprises an air inlet pipe section, a middle pipe section and an air outlet pipe section;

wherein the gas inlet pipe section is arranged in the inner pipeline;

the middle pipe section is connected with the air inlet pipe section in a turning manner;

the air outlet pipe section is connected with the middle pipe section in a turning mode, and the pipe orifice of the air outlet pipe section forms the air outlet.

4. Smoke exhaust duct according to claim 3,

the air inlet pipe section is arranged in parallel with the inner pipeline; and/or

The outer wall surface of the air inlet pipe section is connected with the inner wall surface of the inner pipeline.

5. Smoke exhaust duct according to claim 3,

the side wall of the inner pipeline is provided with a through hole, the middle pipe section penetrates through the through hole, and the projection of the through hole on the outer pipeline is positioned on the outer pipeline.

6. Smoke exhaust duct according to claim 3,

the air outlet pipe section is arranged in parallel with the inner pipeline; and/or

The outer wall surface of the air outlet pipe section is connected with the outer wall surface of the inner pipeline.

7. Smoke exhaust duct according to any of claims 1 to 6,

the ventilation pipe and the smoke exhaust hole are arranged at intervals.

8. A smoke exhaust duct according to any of the claims 1 to 6, further comprising:

the elbow comprises an inner pipe and an outer pipe, the inner pipe is connected with the inner pipeline, and the outer pipe is connected with the outer pipeline;

the vent pipe is arranged at one end far away from the elbow.

9. Smoke exhaust duct according to claim 8,

the ventilation pipe is arranged on one side of the turning direction of the elbow relative to the inner pipeline.

10. An apparatus for heating and ventilation, comprising:

a body; and

an exhaust duct according to any one of claims 1 to 9, connected to the body.

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