CN218379463U - Blocking cover, smoke exhaust pipe, smoke exhaust system and gas water heater - Google Patents

Abstract

The utility model relates to a water heater technical field, concretely relates to blanking cover, tub, system of discharging fume and gas heater, the blanking cover is suitable for and links to each other with the body of tub of discharging fume, the body has the end opening, the blanking cover includes the lid, connects cup and connection on the edge of lid are in the flange on the cup, the lid with the cup all is suitable for the embedding in the body, the outer wall of cup be suitable for with form the circulation passageway that is suitable for the flue gas circulation between the inner wall of body, the flange be suitable for with the tip of body offsets, be equipped with the intercommunication on the cup the circulation passageway with the inboard circulation mouth of cup. The plug cover can play the roles of rain prevention, wind prevention and freeze prevention after being assembled on the pipe body.

Description

Blocking cover, smoke exhaust pipe, smoke exhaust system and gas water heater

Technical Field

The utility model relates to a water heater technical field, concretely relates to blanking cover, tub, the system of discharging fume and gas heater.

Background

The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water. Its advantages are instant use, no need of waiting and less possessed ground area. In the aspect of safety, the gas water heater realizes the separation of heat production and heat supply, bathes in a bathroom and is installed in a kitchen, and the danger of leakage generated in the bathing process is avoided.

As shown in fig. 1 to 5, the gas water heater generally discharges flue gas generated by combustion out of the room through a smoke discharge pipe 100, and in view of wind resistance, the smoke discharge pipe 100 generally includes a pipe body 101 and a plurality of radially-opened smoke discharge holes 102 uniformly distributed, and the smoke discharge holes 102 function to discharge harmful flue gas generated by combustion out of the room. In the smoke exhaust pipe 100, the connecting band 103 is left between the smoke exhaust holes 102 along the circumferential direction, and if the smoke exhaust pipe is horizontally installed during installation and the connecting band 103 is just positioned at the bottommost part, as shown in fig. 4, rainwater which is poured into the smoke exhaust holes 102 from the top along the directions a and B can enter the gas water heater along the direction C on the connecting band 103 at the bottom. The rainwater containing sulfur dioxide and other acidic substances can corrode a smoke tube or the whole machine, so that the service life of the whole machine is reduced; meanwhile, when the smoke exhaust pipe is manufactured, the pipe body 101 and the blocking cover 104 need to be welded together, the manufacturing process is complex, and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that the pipe of discharging fume among the prior art leads to shortening the life of water heater easily because of the rainwater backward flow to provide blanking cover, the pipe of discharging fume, system and the gas heater of discharging fume that are difficult for causing the rainwater backward flow.

In order to solve the technical problem, the utility model provides a pair of blanking cover is suitable for and links to each other with the body of discharging fume the pipe, the body has the end opening, the blanking cover includes the lid, connects cup and connection on the edge of lid are in flange on the cup, the lid with the cup all is suitable for the embedding in the body, the outer wall of cup be suitable for with form the circulation passageway that is suitable for the flue gas circulation between the inner wall of body, the flange be suitable for with the tip of body offsets, be equipped with the intercommunication on the cup the circulation passageway with the inboard circulation mouth of cup.

Optionally, the outer wall of the cup body is provided with a groove, the groove extends along a direction parallel to the axial direction of the cup body, and the groove wall of the groove is suitable for enclosing the flow channel with the inner wall of the pipe body.

Optionally, the grooves are uniformly distributed along the circumferential direction of the cup body.

Optionally, the cup is adapted for an interference fit connection with the tube.

Optionally, the communication port is provided at an end of the groove adjacent to the flange.

Optionally, a wind blocking portion is formed on one side of the groove close to the flange, the wind blocking portion protrudes out of the inner wall of the flange, and the wind blocking portion is suitable for changing the flow direction of the flue gas flowing through the flow port.

Optionally, the flange is located at an end of the cup body remote from the lid.

Optionally, the closure is made of plastic or aluminium alloy.

The utility model also provides a pipe of discharging fume, including the body and blanking cover.

The utility model also provides a system of discharging fume, include the pipe of discharging fume.

The utility model also provides a gas heater, include the pipe of discharging fume.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a blanking cover, during the practical application, with the lid and the cup embedding body of blanking cover, make the flange offset with the tip of body, the flue gas that produces during the burning flows through from the circulation passageway that forms between the outer wall of cup and the inner wall of body after reacing the lid, later from the inboard of the circulation mouth flow direction cup on the cup, and the final discharge accomplishes the effect of discharging fume. When raining, if the end opening position of the smoke exhaust pipe is exposed outdoors or the position where rain can be drenched, because the outer wall of the smoke exhaust pipe is of a closed structure, no matter which direction the rain water is, for example, the rain water cannot enter the smoke exhaust pipe in the axial direction and the inclined direction perpendicular to the pipe body, the possibility that the rain water enters the main body of the gas water heater is radically avoided, further, the electrical safety accidents caused by the fact that the rain water enters a machine and the accidents that the rain water corrodes the machine are avoided, the safety of the water heater is ensured, and the service life of the water heater is prolonged. When wind blows or typhoon blows to the smoke exhaust pipe in the axial direction perpendicular to the pipe body, the outer wall of the pipe body of the smoke exhaust pipe is of a closed structure, and therefore the wind cannot enter the main body of the gas water heater; when wind blows towards the smoke exhaust pipe in the axial direction parallel to the pipe body, the wind is blocked and cannot enter the main body of the gas water heater due to the arrangement of the cover body and the flange; when wind blows towards the smoke exhaust pipe in the direction inclined to the axial direction of the smoke exhaust pipe, the wind obviously cannot enter the main body of the gas water heater, and therefore the typhoon prevention effect is achieved. In winter, when cold air blows towards the smoke exhaust pipe in the axial direction perpendicular to the pipe body, the cold air cannot enter the main body of the gas water heater because the outer wall of the pipe body of the smoke exhaust pipe is of a closed structure; when cold air blows to the smoke exhaust pipe in the axial direction parallel to the pipe body, the cold air is blocked and cannot enter the main body of the gas water heater due to the arrangement of the cover body and the flange; when cold air blows towards the smoke exhaust pipe in the direction axially inclined with the smoke exhaust pipe, the cold air obviously cannot enter the main body of the gas water heater, so that the anti-freezing effect is achieved. Therefore, the plugging cover can play the roles of rain prevention, wind prevention and freezing prevention after being assembled on the pipe body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art gas water heater;

FIG. 2 is a schematic view of a prior art smoke exhaust duct;

FIG. 3 is a partial cross-sectional view of a prior art smoke exhaust;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a schematic view of a prior art closure;

fig. 6 is a schematic view of a plug provided in embodiment 1 of the present invention at an angle;

fig. 7 is a schematic structural view of the plug provided in embodiment 1 of the present invention at another angle;

FIG. 8 is a cross-sectional view of the closure shown in FIG. 6;

FIG. 9 is an enlarged view at M of FIG. 8;

fig. 10 is a schematic structural view of a smoke exhaust pipe provided in embodiment 2 of the present invention;

FIG. 11 is an enlarged view at P of FIG. 10;

fig. 12 is a schematic view of the smoke exhaust pipe provided in embodiment 2 of the present invention after being connected to the main body of the gas water heater;

FIG. 13 is a schematic view of the flow of flue gas;

FIG. 14 is an enlarged view at R of FIG. 13;

FIG. 15 is a schematic view of the air blowing toward the smoke exhaust duct;

FIG. 16 is an enlarged view at Q of FIG. 15;

FIG. 17 is a schematic view of rain water being poured into the smoke exhaust pipe.

Description of the reference numerals:

2. blocking the cover; 201. a cover body; 202. a cup body; 2021. a flow port; 2022. a groove; 2023. a wind shield portion; 203. a flange; 3. a tube body; 301. the end part is open; 302. a first stage; 303. a second section; 304. a crumple section; 4. a main body.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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 according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides a closure 2, the closure 2 being adapted to be connected to a tubular body 3 of a smoke evacuation pipe, the tubular body 3 having an end opening 301.

In one embodiment, as shown in fig. 6 to 9, the closure 2 comprises a cover 201, a cup 202 connected to the edge of the cover 201, and a flange 203 connected to the cup 202, wherein the cover 201 and the cup 202 are both adapted to be embedded in the tube 3, the outer wall of the cup 202 is adapted to form a flow channel adapted to allow the flow of smoke with the inner wall of the tube 3, the flange 203 is adapted to abut against the end of the tube 3, and the cup 202 is provided with a flow port 2021 communicating the flow channel with the inner side of the cup 202.

In this embodiment, in actual use, the lid body 201 and the cup body 202 of the cap 2 are fitted into the pipe body 3 so that the flange 203 abuts against the end of the pipe body 3, and when smoke generated during combustion reaches the lid body 201, the smoke flows through a flow passage formed between the outer wall of the cup body 202 and the inner wall of the pipe body 3 as shown in the J direction in fig. 13 and 14, then flows from the flow port 2021 in the cup body 202 to the inside of the cup body 202, and is finally discharged, thereby completing the smoke evacuation action. When raining, if the end opening 301 of the smoke exhaust pipe is exposed outdoors or rain can be drenched, since the outer wall of the pipe body 3 of the smoke exhaust pipe is of a closed structure, no matter what direction the rainwater is, as shown in fig. 17, the rainwater cannot enter the smoke exhaust pipe in the axial direction (direction D) perpendicular to the pipe body 3 and the inclined direction F, so that the possibility that the rainwater enters the main body 4 of the gas water heater is fundamentally avoided, further, the electrical safety accidents caused by the fact that the rainwater enters a machine and the accidents that the rainwater corrodes the machine are avoided, the safety of the water heater is ensured, and the service life of the water heater is prolonged. When blowing or scraping table wind, as shown in fig. 15, when the wind blows to the smoke exhaust pipe in the axial direction (direction a) perpendicular to the pipe body 3, the wind cannot enter the main body 4 of the gas water heater because the outer wall of the pipe body 3 of the smoke exhaust pipe is of a closed structure; as shown in fig. 16, when wind blows toward the smoke discharge pipe in a direction (E direction) parallel to the axial direction of the pipe body 3, the wind is blocked and cannot enter the main body 4 of the gas water heater due to the arrangement of the cover body 201 and the flange 203; with further reference to FIG. 15, when wind is directed toward the discharge pipe in a direction (direction B) that is axially inclined to the discharge pipe, it is also apparent that wind cannot enter the body 4 of the gas water heater, thereby acting as a typhoon prevention. In winter, as shown in fig. 15, when cold air blows towards the smoke exhaust pipe in a direction (a direction) perpendicular to the axial direction of the pipe body 3, the cold air cannot enter the main body 4 of the gas water heater because the outer wall of the pipe body 3 of the smoke exhaust pipe is of a closed structure; when cold air blows to the smoke exhaust pipe in the axial direction (direction E) parallel to the pipe body 3, the cold air is blocked and cannot enter the main body 4 of the gas water heater due to the arrangement of the cover body 201 and the flange 203; with further reference to fig. 15, when cold air is blown toward the smoke exhaust pipe in a direction (direction B) axially inclined to the smoke exhaust pipe, it is obvious that cold air cannot enter the main body 4 of the gas water heater, thereby performing an anti-freezing function. Therefore, the plug 2 can play the roles of rain prevention, wind prevention and freeze prevention after being assembled on the pipe body 3.

The main body 4 of the gas water heater is preferably, but not limited to, composed of a valve body assembly, a main burner, a small fire burner, a heat exchanger, a safety device, etc., which are well known to those skilled in the art and will not be described in detail herein.

Specifically, flange 203 projects from cup 202, so as to form a stepped surface with cup 202, which is abutted against the end of tubular body 3.

On the basis of the above embodiments, in a preferred embodiment, the outer wall of the cup 202 is provided with a groove 2022, the groove 2022 extends in a direction parallel to the axial direction of the cup 202, and the groove wall of the groove 2022 is adapted to enclose a flow channel with the inner wall of the tube 3. In this embodiment, by forming the groove 2022 on the outer wall of the cup body 202, the rest of the cup body 202 can contact with the inner wall of the pipe body 3, so that on one hand, smoke can be smoothly discharged, and on the other hand, rain-proof, wind-proof and anti-freezing effects are ensured. In an alternative embodiment, the flange 203 can be fixedly connected to the end of the tube 3, the outer diameter of the cup 202 is smaller than the inner diameter of the tube 3, a communication channel is formed between the cup 202 and the tube 3, the groove 2022 can be provided on the outer wall of the cup 202, or the groove 2022 can be omitted, and the smoke can pass through the gap between the cup 202 and the inner wall of the tube 3.

On the basis of the above embodiments, in a preferred embodiment, the grooves 2022 are uniformly distributed in a plurality along the circumferential direction of the cup body 202. In this embodiment, since the grooves 2022 are uniformly provided in plural in the circumferential direction of the cup body 202, the uniform discharge of the flue gas can be ensured. Of course, in other alternative embodiments, the grooves 2022 may be unevenly distributed.

Specifically, the number of the grooves 2022 is three or more, and as shown in fig. 6, the number of the grooves 2022 is 20, but of course, the number of the grooves 2022 is not particularly limited in this embodiment, and may be any number of three or more.

In a preferred embodiment, the cup 202 is adapted to be connected to the tubular body 3 by interference fit. In this embodiment, because cup 202 is suitable for being connected with 3 interference fit of body, when being connected this blanking cover 2 with body 3, only need can fix its position in the cup 202 embedding body 3 of this blanking cover 2, compare with blanking cover 2 and 3 welded modes of body among the prior art, simplified assembly process.

In addition to the above embodiments, the flow port 2021 is provided at one end of the groove 2022 near the flange 203. In this embodiment, since the circulation port 2021 is disposed at one end of the groove 2022 close to the flange 203, it is ensured that the flue gas flows out from the circulation port 2021 after passing through a path along the circulation channel, so as to prolong the path of the flue gas, and further optimize the functions of rain-proof, wind-proof and freeze-proof. Of course, in other alternative embodiments, the flow port 2021 may be disposed in the middle of the groove 2022.

On the basis of the above embodiments, in a preferred embodiment, a wind shielding portion 2023 is formed on one side of the groove 2022 close to the flange 203, the wind shielding portion 2023 protrudes from the inner wall of the flange 203, and the wind shielding portion 2023 is adapted to change the flow direction of the smoke flowing through the flow opening 2021. In this embodiment, the wind blocking portion 2023 is disposed so that the flow direction of the flue gas flowing through the flow port 2021 is changed after being blocked by the wind blocking portion 2023 in the axial direction, and the flue gas directly flows out after changing from the axial flow direction to the radial flow direction, and simultaneously can block the axially-upward intake air, as shown in fig. 16, when the smoke exhaust pipe is blown by wind in the axial direction (E direction) parallel to the pipe body 3, the wind is blocked by the wind blocking portion 2023 and cannot enter the main body 4 of the gas water heater, so that the safe discharge of the flue gas can be ensured, and the wind outside the smoke exhaust pipe can be prevented from blowing into the gas water heater.

Specifically, the bottom of the groove 2022 protrudes from the inner wall of the flange 203, and one side of the flow opening 2021 does not extend directly to the flange 203, so that the groove wall at one end of the groove 2022 forms the wind blocking portion 2023.

In addition to the above embodiments, in a preferred embodiment, flange 203 is located at an end of cup 202 away from lid 201. In this embodiment, the only flange 203 of the cap 2 located outside the tubular body 3 is the flange, and the length of the cap 2 is not too long.

On the basis of the above embodiments, in a preferred embodiment, the closure 2 is made of plastic or aluminum alloy. In the embodiment, because the temperature of the smoke outlet of the smoke exhaust pipe is about 120-180 ℃ when smoke exists, the plastic or aluminum alloy can completely meet the temperature-resistant requirement of the smoke exhaust pipe and can meet the requirements of corrosion resistance and water resistance of the smoke exhaust pipe. Meanwhile, the blanking cover 2 is made of plastic or aluminum alloy, so that the groove 2022 and the flange 203 can be conveniently molded.

Example 2

The present embodiment provides a smoke exhaust pipe, as shown in fig. 10 to 17, comprising a pipe body 3 and a blocking cover 2 provided in the above embodiments. Wherein, lid 201 and cup 202 all imbed in body 3, form the circulation passageway that is suitable for the flue gas circulation between the outer wall of cup 202 and the inner wall of body 3, flange 203 offsets with the tip of body 3, is equipped with the circulation mouth 2021 of intercommunication circulation passageway and the inboard of cup 202 on the cup 202.

When the smoke generated during combustion reaches the lid 201, the smoke flows through the flow path formed between the outer wall of the cup 202 and the inner wall of the pipe 3 as shown in the direction J in fig. 13 and 14, then flows from the flow port 2021 of the cup 202 to the inside of the cup 202, and is finally discharged, thereby completing the smoke evacuation function. When raining, if the end opening 301 of the smoke exhaust pipe is exposed outdoors or can be drenched by rain, because the outer wall of the pipe body 3 of the smoke exhaust pipe is of a closed structure, no matter what direction the rain water is, as shown in fig. 17, the rain water cannot enter the smoke exhaust pipe in the axial direction (direction D) perpendicular to the pipe body 3 and the inclined direction F, the possibility that the rain water enters the main body 4 of the gas water heater is fundamentally avoided, further, the electrical safety accidents caused by the fact that the rain water enters a machine and the accidents caused by the rain water corroding the machine are avoided, the safety of the water heater is ensured, and the service life of the water heater is prolonged. When air is blown or typhoon is blown, as shown in fig. 15, when the air is blown to the smoke exhaust pipe in the direction perpendicular to the axial direction (direction a) of the pipe body 3, the air cannot enter the main body 4 of the gas water heater because the outer wall of the pipe body 3 of the smoke exhaust pipe is of a closed structure; as shown in fig. 16, when wind blows toward the smoke discharge pipe in a direction (E direction) parallel to the axial direction of the pipe body 3, the wind is blocked and cannot enter the main body 4 of the gas water heater due to the arrangement of the cover body 201 and the flange 203; as shown in fig. 15, when wind blows toward the smoke exhaust pipe in a direction (direction B) inclined from the axial direction of the smoke exhaust pipe, it is obvious that the wind cannot enter the main body 4 of the gas water heater, thereby playing a role of typhoon prevention. In winter, when cold air blows towards the smoke exhaust pipe in the axial direction (direction A) perpendicular to the pipe body 3, the cold air cannot enter the main body 4 of the gas water heater because the outer wall of the pipe body 3 of the smoke exhaust pipe is of a closed structure; as shown in fig. 16, when cold air is blown to the smoke discharge pipe in a direction parallel to the axial direction (E direction) of the pipe body 3, the cold air is blocked and cannot enter the main body 4 of the gas water heater due to the arrangement of the cover body 201 and the flange 203; as shown in fig. 15, when cold air is blown to the smoke exhaust pipe in a direction (direction B) inclined to the axial direction of the smoke exhaust pipe, it is obvious that cold air cannot enter the main body 4 of the gas water heater, thereby performing an anti-freezing function. Therefore, the smoke exhaust pipe can play the roles of rain prevention, wind prevention and freezing prevention.

On the basis of the above embodiments, in a preferred embodiment, as shown in fig. 10, the pipe body 3 comprises a first section 302 and a second section 303, the first section 302 is suitable for being connected with the main body 4 of the gas water heater and is arranged along the vertical direction, and the extending direction of the second section 303 forms an included angle with the extending direction of the first section 302. The extending direction of the first section 302 and the extending direction of the second section 303 form an included angle, which is preferably, but not limited to, an acute angle, so as to facilitate the installation and smoke evacuation of the pipe 3.

In addition to the above embodiments, in a preferred embodiment, and with further reference to fig. 10, the tubular body 3 further comprises a foldable bellows section 304 connected between the first section 302 and the second section 303. The angle between the first section 302 and the second section 303 can be conveniently and quickly adjusted by bending the corrugated section 304, so that the gas water heater can be conveniently installed.

Example 3

The embodiment provides a smoke exhaust system, which comprises the smoke exhaust pipe and the smoke exhaust fan provided in the embodiment 2.

The smoke exhaust system can play the roles of rain prevention, wind prevention and freezing prevention.

Example 4

The present embodiment provides a gas water heater, as shown in fig. 12, including the smoke exhaust pipe and the main body 4 provided in the above embodiment 2.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (11)

1. The utility model provides a blanking cover, characterized in that, be suitable for with the body (3) of tub of discharging fume and link to each other, body (3) have end opening (301), blanking cover (2) including lid (201), connect cup (202) on the edge of lid (201) and connect flange (203) on cup (202), lid (201) with cup (202) all are suitable for the embedding in body (3), the outer wall of cup (202) be suitable for with form the circulation passageway that is suitable for the flue gas circulation between the inner wall of body (3), flange (203) be suitable for with the tip of body (3) offsets, be equipped with on cup (202) the intercommunication the circulation passageway with circulation mouth (2021) of the inboard of cup (202).

2. The closure according to claim 1, wherein the outer wall of the cup body (202) is provided with a groove (2022), the groove (2022) extending in a direction parallel to the axial direction of the cup body (202), the groove wall of the groove (2022) being adapted to enclose the flow channel with the inner wall of the tubular body (3).

3. The closure according to claim 2, wherein the grooves (2022) are uniformly distributed in plurality along the circumference of the cup body (202).

4. Closure according to claim 2, wherein said cup (202) is adapted to be connected with said tubular body (3) by interference fit.

5. The closure according to claim 2, wherein the through-flow opening (2021) is provided at an end of the groove (2022) near the flange (203).

6. The closure according to claim 5, wherein the groove (2022) is formed with a wind shield (2023) on a side close to the flange (203), the wind shield (2023) protruding from an inner wall of the flange (203), the wind shield (2023) being adapted to change a flow direction of the flue gas flowing through the through-flow opening (2021).

7. Closure according to claim 1, characterized in that the flange (203) is located at the end of the cup body (202) remote from the cover body (201).

8. The closure according to any of claims 1 to 7, characterized in that the closure (2) is made of plastic or aluminium alloy.

9. An exhaust pipe, characterized by comprising a pipe body (3) and a closure (2) according to any of claims 1-7.

10. A smoke evacuation system comprising the smoke evacuation tube of claim 9.

11. A gas water heater comprising the smoke exhaust pipe of claim 9.

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