CN210425568U - Gas mixing device for gas water heater and gas water heater - Google Patents
Gas mixing device for gas water heater and gas water heater Download PDFInfo
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- CN210425568U CN210425568U CN201920623334.2U CN201920623334U CN210425568U CN 210425568 U CN210425568 U CN 210425568U CN 201920623334 U CN201920623334 U CN 201920623334U CN 210425568 U CN210425568 U CN 210425568U
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- gas
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- water heater
- flue gas
- mixing
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Abstract
The utility model discloses a gas mixing arrangement and gas heater for gas heater, gas mixing arrangement includes: the air outlet cavity is formed in the air mechanism; the mixing chamber, the mixing chamber with the wind chamber communicates with each other, be equipped with flue gas entry and mixed flow structure in the mixing chamber under the fan drive, flue gas and air get into in the mixing chamber and pass through mixed flow structure misce bene. According to the utility model discloses a gas mixing arrangement for gas heater introduces the mixing chamber with flue gas and air in to through mixed flow structure misce bene, thereby realize that the combustor carries the mist of even flue gas and air, guarantee that the oxygen in the combustor distributes evenly, make the flue gas can be burnt fully, reduce harmful gas's production.
Description
Technical Field
The utility model relates to a water heater technical field, more specifically relates to a gas mixing arrangement and gas heater for gas heater.
Background
Harmful gases such as CO, NOx and the like can be discharged to the outside in the combustion process of the gas water heater, so that the environment is polluted, and the danger is easily brought to the personal safety.
Patent No. 201710314570.1 discloses a high efficiency flue gas recirculation system for secondary combustion by introducing flue gas into an air intake line into a burner. The inventor finds in research that if the flue gas is directly fed into the combustor for combustion (i.e. the air and the flue gas are not sufficiently mixed), some areas of the combustor can be rich in oxygen, and other areas can be poor in oxygen or even oxygen, so that the combustor can not only combust unstably, but also easily generate more harmful gases.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of above-mentioned technical problem to a certain extent at least.
Therefore, the utility model provides a gas mixing arrangement for gas heater, this gas mixing arrangement can carry out the intensive mixing to flue gas and air, carries even mist to the combustor.
The utility model also provides a gas heater with above-mentioned gas mixing arrangement, this gas heater can carry out the postcombustion by the flue gas effectively, discharges less harmful gas side by side.
According to the utility model discloses a gas mixing arrangement for gas heater, include: the air outlet cavity is formed in the air mechanism; the mixing chamber, the mixing chamber with the wind chamber communicates with each other, be equipped with flue gas entry and mixed flow structure in the mixing chamber under the fan drive, flue gas and air get into in the mixing chamber and pass through mixed flow structure misce bene.
According to the utility model discloses a gas mixing arrangement for gas heater introduces the mixing chamber with flue gas and air in to through mixed flow structure misce bene, thereby realize that the combustor carries the mist of even flue gas and air, guarantee that the oxygen in the combustor distributes evenly, make the flue gas can be burnt fully, reduce harmful gas's production.
According to some embodiments of the utility model, the mixing chamber is the equal open body structure in axial both ends, body structure's one end is air inlet, and the other end is the mist export, body structure still has the flue gas entry that runs through its wall thickness.
In an alternative embodiment, the radial dimension d1 of the flue gas inlet is smaller than the radial dimension d2 of the air inlet.
In an alternative embodiment, the mixing structure is a hollow sleeve that divides the mixing chamber into an inner passage and an outer passage.
In a further optional embodiment, an end plate is arranged on one side of the pipe body structure facing the air cavity, one end of the sleeve is connected to the pipe body structure, and the other end of the sleeve and the end plate are arranged at intervals to form an overflowing channel.
In a further optional embodiment, an end plate is arranged on one side of the pipe body structure facing the wind cavity, one end of the sleeve is connected to the pipe body structure, the other end of the sleeve is connected to the end plate, and the sleeve is provided with a plurality of through holes penetrating through the wall thickness of the sleeve.
In an alternative example, the sleeve is evenly distributed with divergent holes throughout the wall thickness thereof.
In an alternative example, the through hole is one of a circular hole, a square hole, a triangular hole or a star-shaped hole.
According to the utility model discloses a some embodiments, the mixed flow structure is the wind wheel subassembly, the wind wheel subassembly install in the body structure, the wind wheel subassembly include wind axle and a plurality of connect in the epaxial fan blade of wind.
In an alternative embodiment, the volume of the wind chamber is greater than the volume of the mixing chamber.
According to the utility model discloses gas heater, including burning main part, gas mixing device and fume extractor, be equipped with the combustor in the burning main part, gas mixing device is to the mist of combustor transported air and flue gas. The smoke exhaust device is provided with a smoke exhaust pipe, one end of the smoke exhaust pipe is connected with the combustion main body, and the other end of the smoke exhaust pipe is connected with the smoke inlet.
According to the utility model discloses gas heater includes the gas mixing device of above-mentioned embodiment, because according to the utility model discloses gas mixing device can carry misce bene's flue gas and air to the combustor, guarantees that the combustor burning is stable, and the secondary flue gas is burnt fully, reduces harmful gas's emission.
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 cross-sectional view of a gas mixing device according to some embodiments of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a cross-sectional view of a gas mixing device according to further embodiments of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
fig. 5 is a schematic view of another angle of a gas mixing device according to some embodiments of the present invention;
fig. 6 is a schematic structural view of a flow mixing structure according to some embodiments of the present invention.
Reference numerals:
a gas mixing device 100;
a fan 10; a wind chamber 11; an air outlet 12;
a mixing chamber 20;
a flue gas inlet 21;
an air inlet 22;
a mixed gas outlet 23;
a flow mixing structure 24; a through hole 241;
an end plate 25;
an overflow channel 26;
a fan blade assembly 27; a wind shaft 271; fan blades 272;
an inner channel 28;
an outer channel 29.
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 and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
According to the utility model discloses gas heater includes burning main part (not shown), gas mixing device 100 and fume extractor (not shown), is equipped with the combustor in the burning main part, and gas mixing device 100 is to the mixed gas of combustor transported air and flue gas. The smoke exhaust device is provided with a smoke exhaust pipe, one end of the smoke exhaust pipe is connected with the combustion main body, and the other end of the smoke exhaust pipe is connected with the smoke inlet 21. I.e. at least a part of the flue gases is conveyed into the burner through a flue gas duct.
Specifically, referring to fig. 1 to 5, a gas mixing device 100 for a gas water heater according to an embodiment of the present invention is described, the gas mixing device 100 including: a fan 10 and a mixing chamber 20.
Specifically, as shown in fig. 1 to 4, the fan 10 constitutes an air outlet chamber 11. The mixing chamber 20 is communicated with the air cavity 11, a flue gas inlet 21 and a mixed flow structure 24 are arranged in the mixing chamber 20, and under the driving of the fan 10, flue gas and air enter the mixing chamber 20 and are uniformly mixed through the mixed flow structure 24.
In other words, when the gas water heater is in operation, at least a portion of the flue gas discharged from the burner and the outside air enter the mixing chamber 20 under the suction of the fan 10. In order to make the flue gas and the air be fully mixed, a mixed flow structure 24 is arranged in the mixing chamber 20, and the mixed flow structure 24 can promote the molecules in the flue gas and the molecules in the air to move in an accelerated manner and mutually fuse to form a mixed gas flow of the flue gas and the air which are uniformly mixed. The mixed gas flow is then injected into the burner together with the gas.
It should be noted that the positions of the mixing chamber 20 and the fan 10 relative to the airflow flowing direction are not particularly limited, alternatively, the mixing chamber 20 is located upstream in the airflow flowing direction, and the fan 10 is located downstream in the airflow flowing direction, so that both the air and the flue gas enter the mixing chamber 20 and are mixed by the mixing structure 24, and then enter the air cavity 11 of the fan 10 for secondary mixing, and finally are sent into the combustor under the driving of the fan 10. Optionally, the mixing chamber 20 is located at the downstream of the airflow flowing direction, and the blower 10 is located at the upstream of the airflow flowing direction, in this case, the blower 10 may synchronously suck the air and the flue gas into the air cavity 11, then send the air and the flue gas into the mixing chamber 20 for mixing, and finally send the mixed air flow into the combustor.
In short, according to the utility model discloses a gas mixing arrangement 100 for gas heater, with in flue gas and the air introduction mixing chamber 20 to through mixed flow structure 24 misce bene, thereby realize carrying the mist of even flue gas and air to the combustor, guarantee that the oxygen in the combustor distributes evenly, makes combustible component in the flue gas by fully burning, reduces harmful gas's emission.
In some embodiments of the present invention, as shown in fig. 2 and 4, the mixing chamber 20 is a tube structure with both axial ends open, one end of the tube structure is an air inlet 22, the other end is a mixed gas outlet 23, and the tube structure further has a flue gas inlet 21 running through the wall thickness thereof. In other words, the air inlet 22 and the mixed gas outlet 23 are arranged opposite to each other in the axial direction, and the central axis of the flue gas inlet 21 intersects with the central axis of the pipe body structure, so that the flue gas flow and the air flow can flow in a staggered manner, and the flue gas and the air can be better mixed.
In an alternative embodiment, the radial dimension d1 of the flue gas inlet 21 is smaller than the radial dimension d2 of the air inlet 22. For example, d1 is one-half of d 2. Namely, the unit air input of the air is larger than that of the flue gas, so that the flue gas and the air can be ensured to have better mixing proportion, and the full combustion in the combustor is facilitated.
In an alternative embodiment, the mixing structure 24 is a hollow sleeve that divides the mixing chamber 20 into an inner passage 28 and an outer passage 29. Wherein the inner channel 28 communicates with the air inlet 22 and the mixed gas outlet 23, respectively, and the outer channel 29 communicates with the flue gas inlet 21 and the inner channel 28, respectively. In this way, air and flue gas are introduced into the mixing chamber 20 through the inner channel 28 and the outer channel 29, respectively, and are encouraged to merge with each other under the interference of the sleeve.
In a further alternative embodiment, the side of the tubular body structure facing the air chamber 11 is provided with an end plate 25, one end of the sleeve being connected to the tubular body structure and the other end of the sleeve being spaced from the end plate 25 to form a transfer passage 26. As shown in fig. 1 in conjunction with fig. 2, at the upstream end of the mixing chamber 20 in the direction of flow of the air, the inner 28 and outer 29 channels are separated by a sleeve, i.e. the flue gas flow does not intersect the air flow; the advantage of the arrangement in which the flue gas stream enters the inner channel 28 via the flow-through channel 26 at the downstream end of the mixing chamber 20 in the direction of flow of the air streams to meet the air streams is that the downstream end of the mixing chamber 20 in the direction of flow of the air streams is adjacent to the air cavity 11 of the fan 10, and the flue gas streams and the air streams can be brought rapidly into the downstream end and collide with each other vigorously to improve the uniformity of mixing of the flue gas streams with the air streams.
In a further alternative embodiment, as shown in fig. 3 and 4, the side of the tubular body structure facing the wind chamber 11 is provided with an end plate 25, one end of the sleeve being connected to the tubular body structure and the other end of the sleeve being connected to the end plate 25, the sleeve being provided with a plurality of through holes 241 extending through its wall thickness. Thus, under the suction of the fan 10, the flue gas can pass through the plurality of through holes 241 and be uniformly melted into the air flow, and then is uniformly stirred again after entering the air cavity 11, so that the mixing degree of the flue gas and the air is improved, and the stable and uniform mixed gas of the flue gas and the air is conveyed to the combustor.
In an alternative example, the sleeve is evenly distributed with diverging holes through its wall thickness. That is to say, the aperture of through-hole 241 increases gradually, and the gradual change in aperture can make the inside air flow field of flue gas more complicated changeable, is favorable to the mixture of flue gas and air.
In a further alternative example, the through hole 241 is one of a circular hole, a square hole, a triangular hole, or a star-shaped hole. The through holes 241 of different shapes produce a more uniform mixing of the flue gas and the air.
In an alternative embodiment, as shown in fig. 6, the flow mixing structure 24 is a fan blade assembly 27, the fan blade assembly 27 is installed in the pipe structure, and the fan blade assembly 27 includes a wind shaft 271 and a plurality of fan blades 272 connected to the wind shaft 271. Under the drive of the fan 10, the flue gas and the air enter the mixing chamber 20 to drive the fan blades 272 to rotate, so that the flue gas and the air are uniformly stirred by the fan blades 272.
In an alternative embodiment, as shown in fig. 2, 4 and 5, the volume of the wind chamber 11 is greater than the volume of the mixing chamber 20. The change of the volume can promote the molecules in the smoke and the molecules in the air to move more violently, and the mixing uniformity of the smoke and the air is improved.
According to the utility model discloses gas heater includes the gas mixing device 100 of above-mentioned embodiment, because according to the utility model discloses gas mixing device 100 can carry the flue gas and the air of misce bene to the combustor, guarantees that the combustor burning is stable, and the secondary flue gas is burnt fully, reduces harmful gas's emission.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (11)
1. A gas mixing device for a gas water heater, comprising:
the air outlet cavity is formed in the air mechanism;
the mixing chamber, the mixing chamber with the wind chamber communicates with each other, be equipped with flue gas entry and mixed flow structure in the mixing chamber under the fan drive, flue gas and air get into in the mixing chamber and pass through mixed flow structure misce bene.
2. The gas mixing device for a gas water heater according to claim 1, wherein the mixing chamber is a tubular structure open at both axial ends, one end of the tubular structure being an air inlet and the other end being a mixed gas outlet, the tubular structure further having a flue gas inlet through its wall thickness.
3. Gas mixing device for gas water heater according to claim 2, characterized in that the radial dimension d1 of the flue gas inlet is smaller than the radial dimension d2 of the air inlet.
4. The gas mixing device for a gas water heater according to claim 2, wherein said flow mixing structure is a hollow sleeve dividing said mixing chamber into an inner channel and an outer channel.
5. A gas mixing arrangement for a gas fired water heater according to claim 4 wherein the side of the tubular body structure facing the wind chamber is provided with an end plate, one end of the sleeve being connected to the tubular body structure and the other end of the sleeve being spaced from the end plate to form an overflow passage.
6. A gas mixing device for a gas water heater according to claim 4, wherein the side of the tube structure facing the wind chamber is provided with an end plate, one end of the sleeve is connected to the tube structure and the other end of the sleeve is connected to the end plate, the sleeve being provided with a plurality of through holes running through the wall thickness thereof.
7. A gas mixing device for a gas water heater according to claim 6, wherein said sleeve has evenly distributed divergent holes through its wall thickness.
8. The gas mixing device for a gas water heater according to claim 6, wherein the through hole is one of a round hole, a square hole, a triangular hole or a star-shaped hole.
9. The gas mixing device for a gas water heater according to claim 2, wherein said flow mixing structure is a wind wheel assembly, said wind wheel assembly being mounted within said tubular structure, said wind wheel assembly including a wind shaft and a plurality of blades connected to said wind shaft.
10. The gas mixing device for a gas water heater according to claim 1, wherein the volume of said wind chamber is greater than the volume of said mixing chamber.
11. A gas water heater, comprising:
the burner comprises a combustion main body, wherein a burner is arranged in the combustion main body;
a gas mixing device that delivers a mixture of air and flue gas to the burner, the gas mixing device comprising:
the air outlet cavity is formed in the air mechanism;
the mixing chamber is communicated with the air cavity, a flue gas inlet and a mixed flow structure are arranged in the mixing chamber, and under the driving of the fan, flue gas and air enter the mixing chamber and are uniformly mixed through the mixed flow structure;
the smoke exhaust device is provided with a smoke exhaust pipe, one end of the smoke exhaust pipe is connected with the combustion main body, and the other end of the smoke exhaust pipe is connected with the smoke inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623334.2U CN210425568U (en) | 2019-04-30 | 2019-04-30 | Gas mixing device for gas water heater and gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623334.2U CN210425568U (en) | 2019-04-30 | 2019-04-30 | Gas mixing device for gas water heater and gas water heater |
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| CN210425568U true CN210425568U (en) | 2020-04-28 |
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| CN201920623334.2U Active CN210425568U (en) | 2019-04-30 | 2019-04-30 | Gas mixing device for gas water heater and gas water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432291A (en) * | 2021-05-27 | 2021-09-24 | 刘鹏 | Gas water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432291A (en) * | 2021-05-27 | 2021-09-24 | 刘鹏 | Gas water heater |
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Effective date of registration: 20230105 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. Patentee before: MIDEA GROUP Co.,Ltd. |