CN212320079U - Gas heating device - Google Patents

Gas heating device Download PDF

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Publication number
CN212320079U
CN212320079U CN202022218652.6U CN202022218652U CN212320079U CN 212320079 U CN212320079 U CN 212320079U CN 202022218652 U CN202022218652 U CN 202022218652U CN 212320079 U CN212320079 U CN 212320079U
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China
Prior art keywords
gas
baffle plate
shell
housing
heating device
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CN202022218652.6U
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Chinese (zh)
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唐印
龚元德
孔德利
莫玉馨
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Sichuan Golden Elephant Sincerity Chemical Co Ltd
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Sichuan Golden Elephant Sincerity Chemical Co Ltd
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Abstract

The utility model provides a gas heating device, relating to the technical field of chemical equipment, comprising a shell with a containing cavity, a heat exchange tube bundle and a baffle group which are arranged in the containing cavity; the shell comprises an air inlet and a first air outlet which are communicated with the accommodating cavity; baffle group is located between air inlet and the first gas outlet, and baffle group includes the polylith baffling board, and the polylith baffling board is arranged along the extending direction interval of casing, and casing and polylith baffling board form and are used for making the zigzag form runner that the gas that treats to heat passes through, have alleviated the lower technical problem of gas heater's the heat exchange efficiency who exists among the prior art, have reached the technological effect that improves heat exchange efficiency.

Description

Gas heating device
Technical Field
The utility model belongs to the technical field of the chemical industry equipment technique and specifically relates to a gas heating device is related to.
Background
The heater is a device which uses a certain medium as a heat carrier and heats other heated media. Such as a molten salt heater. The molten salt heater is a heating device using molten salt as a heat carrier. The molten salt is an ionic melt formed by melting salts and composed of cations and anions, and has similar physical properties to liquid. The melting point of the salts is very wide, and can be as high as thousands of degrees centigrade (801 ℃ NaCl) or as low as-96 ℃, which is related to the type of salt. The heating temperature of common molten salt is higher, for example, 350-550 ℃, and the heat transfer coefficient of the common molten salt is more than 2 times of that of an organic carrier, so that the common molten salt is widely applied to the fields of chemical industry, energy, environmental protection and the like. However, the conventional molten salt heater has a problem of low heat exchange efficiency when heating gas.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas heating device to alleviate the lower technical problem of gas heater's the heat exchange efficiency who exists among the prior art.
In a first aspect, an embodiment provides a gas heating apparatus, including: the shell with the accommodating cavity, the heat exchange tube bundle and the baffle plate group are arranged in the accommodating cavity.
The shell comprises an air inlet and a first air outlet which are communicated with the containing cavity.
The baffle group is positioned between the air inlet and the first air outlet and comprises a plurality of baffle plates which are arranged at intervals along the extending direction of the shell, and the shell and the baffle plates form a zigzag flow channel for allowing the gas to be heated to pass through.
The first air outlets are arranged along the circumferential direction of the shell at intervals.
The outer side of the shell is fixedly sleeved with a sleeve, a closed air outlet cavity is formed between the sleeve and the outer surface of the shell in a surrounding mode, a second air outlet is formed in the sleeve, and the second air outlet and the first air outlet are communicated with the air outlet cavity.
In an alternative embodiment, the zigzag flow channels include a first flow channel near an inner wall of the housing and a second flow channel located at a central position in a height direction of the housing, and the first flow channel and the second flow channel are arranged at a distance.
In an alternative embodiment, the set of baffles comprises a first baffle and a second baffle, both arranged at an angle to the direction of extension of the housing.
An annular first flow channel is formed between the outer edge of the first baffle plate and the inner wall of the shell, and the second flow channel is arranged on the second baffle plate.
In an alternative embodiment, the first and second baffle plates are provided in at least two pieces, and the first and second baffle plates are alternately arranged.
In an alternative embodiment, one of the second baffle plates is located at a position of the housing near the first air outlet.
In an alternative embodiment, the receiving cavity has a circular cross-sectional shape, the first baffle plate is a circular plate, and the second baffle plate is a circular ring-shaped plate.
The diameter of the first baffle is 0.5-0.9 times of the inner diameter of the shell.
And/or the diameter of the inner circle of the second baffle plate is 0.5-0.9 times of the inner diameter of the shell.
And/or the diameter of the outer circle of the second baffle plate is 0-50 mm smaller than the inner diameter of the shell.
In an optional embodiment, a flow equalizing structure is arranged at the air inlet and is located in the shell.
In an optional embodiment, the flow equalizing structure includes an inlet distribution plate, the inlet distribution plate is fixedly disposed relative to the housing, and the inlet distribution plate is provided with a plurality of first through holes uniformly arranged.
In an alternative embodiment, the sum of the areas of the plurality of first air outlets is no greater than the area of the air inlet.
In an alternative embodiment, the housing is located off-centre from the sleeve in a direction away from the second outlet port.
The utility model provides a gas heating device's beneficial effect:
when using this gas heating device, the heat transfer medium that has let in the uniform temperature range in the heat exchanger tube bank, treat that heated gas can enter into by the air inlet and hold the intracavity, owing to hold the intracavity and be equipped with the polylith baffling board, the polylith baffling board is along the extending direction interval arrangement of casing, and casing and polylith baffling board form and are used for making the zigzag form runner that treated heated gas passes through, therefore, it can flow along zigzag form runner to enter into and hold intracavity treated heated gas, in-process gas that flows can carry out the heat exchange with the heat exchanger tube bank, thereby make and treat that heated gas intensifies gradually, gas after final heating is discharged by first gas outlet.
Therefore, the shell and the baffle plates in the gas heating device can form a zigzag flow channel, and the zigzag flow channel can increase the flowing time of gas in the accommodating cavity compared with a linear flow channel, so that the heat exchange efficiency is improved; on the other hand, the zigzag flow channel can change the flowing direction of the gas, and the gas is impacted by the barrier while the gas changes the direction, so that the flow speed of the gas can be increased, and further the heat exchange efficiency is improved.
In addition, first gas outlet is a plurality of, and enclose into inclosed gas outlet cavity between the sleeve in the outside of casing and the surface of casing, second gas outlet and first gas outlet on the sleeve all communicate with each other with gas outlet cavity, this setting can make and hold the intracavity heated gas and discharge into gas outlet cavity through a plurality of first gas outlets, namely, make the gas that comes from a plurality of directions collect in gas outlet cavity, and discharge through the second gas outlet on the gas outlet cavity, this setting directly sets up a gas outlet on the casing among the prior art, this gas heating device can make the distribution of gas in holding the intracavity even, make and hold the flow field in the intracavity stable, can make full use of heat transfer area.
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 structural diagram of a gas heating apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the shell, the tube box, the heat exchange tube bundle and the set of baffles;
FIG. 3 is a schematic view of the housing and the header of the gas heating apparatus shown in FIG. 1;
fig. 4 is a side view of the relative positions of the housing and the sleeve.
Icon:
100-a housing; 110-an air inlet; 120-a first outlet port;
200-a heat exchange tube bundle;
310-a first baffle plate; 320-a second baffle plate;
400-a pipe box; 500-current sharing structure;
600-a sleeve; 610-second air outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
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 the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, 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 the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The present embodiment provides a gas heating apparatus, as shown in fig. 1 to 3, the gas heating apparatus includes a shell 100 having a receiving cavity, and a heat exchange tube bundle 200 and a baffle group both disposed in the receiving cavity; the housing 100 includes an air inlet 110 and a first air outlet 120 both communicating with the accommodation chamber; the baffle group is located between the gas inlet 110 and the first gas outlet 120, and includes a plurality of baffles, which are arranged at intervals along the extending direction of the casing 100, and the casing 100 and the plurality of baffles form a zigzag flow channel for passing the gas to be heated.
When using this gas heating device, the heat transfer medium that has certain temperature range lets in heat exchange tube bundle 200, treat that heated gas can enter into by air inlet 110 and hold the intracavity, owing to hold the intracavity and be equipped with the polylith baffling board, the polylith baffling board is arranged along the extending direction interval of casing 100, and casing 100 and polylith baffling board form and are used for making the zigzag form runner that treated heated gas passes through, therefore, it can flow along zigzag form runner to enter into and hold intracavity treated heated gas, can carry out the heat exchange with heat exchange tube bundle 200 at the in-process that flows, thereby make treated heated gas heat up gradually, gas after final heating is discharged by first gas outlet 120.
From the foregoing, the housing 100 and the plurality of baffles in the gas heating device can form a zigzag flow channel, and the zigzag flow channel can increase the flowing time of the gas in the accommodating cavity compared with the linear flow channel, thereby improving the heat exchange efficiency; on the other hand, the zigzag flow channel can change the flowing direction of the gas, and the gas is impacted by the barrier while the gas changes the direction, so that the flow speed of the gas can be increased, and further the heat exchange efficiency is improved.
The heat exchange tube bundle 200 includes hundreds of heat exchange tubes, and a certain heat exchange gap is left between the heat exchange tubes.
In this embodiment, a single heat exchange tube can adopt a U-shaped heat exchange tube, and the outer surface of the single U-shaped heat exchange tube is a heat transfer surface.
The above-mentioned "heat exchange medium" in the heat exchange tube bundle 200 can be selected from a molten salt (a mixture of potassium nitrate, sodium nitrate and sodium nitrite), and the molten salt with a certain temperature is introduced into the heat exchange tube bundle 200 according to the temperature to be heated by the gas to be heated, which will be clear to those skilled in the art.
In the production of melamine, the carrier gas for the fluidized bed is a mixed gas of ammonia gas and carbon dioxide, the temperature of the molten salt is 350-550 ℃, the molten salt is introduced into the heat exchange tubes of the heat exchange tube bundle 200, the carrier gas introduced into the shell 100 can come from a compressor, and the temperature of the carrier gas is 200-260 ℃, wherein the carrier gas can be heated to above 300 ℃ after heat exchange.
In this embodiment, the zigzag flow channels include a first flow channel close to the inner wall of the housing 100 and a second flow channel located at the center position in the height direction of the housing 100, and the first flow channel and the second flow channel are arranged at an interval; this arrangement has the advantage of enabling the air flow to flow from the inner wall area of the housing 100 to the middle of the housing 100 and from the middle of the housing 100 to the inner wall area of the housing 100, thereby causing the air flow to follow a zigzag flow path.
It should be noted that the gas heating apparatus in this embodiment is horizontal. Here, the cross-sectional shape of the housing chamber of the housing 100 in the gas heating apparatus shown in fig. 1 is a circle, and the above-mentioned "center position in the height direction of the housing 100" means the center position of the housing 100 in the vertical direction.
Specifically, as shown in fig. 2, the baffle group includes a first baffle plate 310 and a second baffle plate 320 both disposed at an angle to the extending direction of the housing 100; an annular first flow channel is formed between the outer edge of the first baffle plate 310 and the inner wall of the casing 100, and the second flow channel is disposed in the second baffle plate 320.
The second flow channel is a central through hole disposed on the second baffle plate 320.
Illustratively, the first channel and the second channel are both one, and the first channel is disposed proximate to the air inlet 110; in operation, the second baffle 320 is disposed adjacent to the first outlet 120, so that the gas to be heated enters the accommodating cavity through the inlet 110 and is discharged from the first outlet 120 through the first channel and the second channel.
As a variation, the first baffle plate 310 and the second baffle plate 320 are both provided in two, and the first baffle plate 310 and the second baffle plate 320 are alternately arranged, that is, a first baffle plate 310, a second baffle plate 320, a first baffle plate 310, and a second baffle plate 320 are sequentially arranged at intervals.
For example, the first baffle plate 310 and the second baffle plate 320 are four pieces, but may also be three pieces, five pieces, and so on.
In this embodiment, referring to fig. 2 and 3, a second baffle 320 is located at a position of the housing 100 near the first air outlets 120 to ensure that the gas can be concentrated at the second baffle 320 and flow into the plurality of first air outlets 120 better.
Further, as shown in fig. 2, a first baffle 310 is located at a position of the housing 100 near the air inlet 110.
With reference to fig. 2, when the gas heating apparatus works, gas enters the accommodating cavity from the gas inlet 110, passes through the heat exchange gaps between the heat exchange tube bundles 200, changes the flow direction to flow to the first flow channel (around the heat exchange tube bundle 200), meets the shell 100, changes the flow direction again, flows to the second flow channel (at the center of the heat exchange tube bundle 200), changes the flow direction again, flows from the second flow channel to the first flow channel, and flows forward in sequence. As can be seen from the foregoing, the gas flows in the above manner, and the flow direction (from the center of the heat exchange tube bundle 200 to the periphery of the heat exchange tube bundle 200 and then to the center of the heat exchange tube bundle 200) can be changed many times, so as to prolong the flow time of the gas in the accommodating chamber.
On the basis of the above embodiment, one specific implementation manner capable of forming the first flow passage and the second flow passage is as follows: the cross-sectional shape of the receiving cavity is circular, the first baffle 310 is a circular plate, and the second baffle 320 is a circular ring plate.
Among them, the following conditions are satisfied between the first baffle plate 310, the second baffle plate 320 and the casing 100: 1) the diameter (outer edge diameter) of the first baffle 310 is 0.5 to 0.9 times the inner diameter of the housing 100; 2) the diameter of the inner circle of the second baffle 320 is 0.5-0.9 times of the inner diameter of the shell 100; 3) the diameter of the outer circle of the second baffle 320 is 0-50 mm smaller than the inner diameter of the shell 100. Preferably, the three of the first baffle plate 310, the second baffle plate 320 and the housing 100 satisfy the three aforementioned conditions, but it is also possible to satisfy any one or two of the aforementioned conditions.
In one embodiment, the outer diameter of the second baffle 320 is 10mm smaller than the inner diameter of the housing 100, and the inner diameter of the second baffle 320 is 0.75 times the inner diameter of the housing 100. In order to improve the heat exchange efficiency as much as possible, the distance between the first baffle plate 310 and the second baffle plate 320 is 400 mm.
In order to improve the heat exchange efficiency, the distance between the first baffle plate 310 and the second baffle plate 320 may be adjusted, and the diameter of the first baffle plate 310 and the diameter of the inner circle of the second baffle plate 320 may be changed, so as to change the flow velocity of the gas between the heat exchange tube bundles 200, thereby achieving the purpose of improving the heat exchange efficiency.
In this embodiment, as shown in fig. 1, 2 or 3, one end (e.g., the left end) of the housing 100 is open, and the open end is provided with a tube box 400, and the open end is closed by the tube box 400.
Wherein, the shell 100 is detachably connected (e.g., screwed or clamped) with the tube box 400, which not only facilitates the disassembly and assembly of the heat exchange tube bundle 200, but also facilitates the replacement of the heat exchange medium in the heat exchange tube bundle 200 and the formation of circulation, etc.
On the basis of the above embodiments, as shown in fig. 2, the flow equalizing structure 500 is disposed at the air inlet 110, and the flow equalizing structure 500 is located in the casing 100.
In one structural form, please continue to refer to fig. 2, the flow equalizing structure 500 includes an inlet distribution plate, the inlet distribution plate is fixedly disposed relative to the housing 100, and the inlet distribution plate is provided with a plurality of first through holes uniformly disposed; when the gas distributor works, gas enters from the gas inlet 110, is blocked by the inlet distribution plate, changes the original flowing direction of the gas and continues to flow through the first through holes which are uniformly distributed.
Wherein the inlet distribution plate can be snapped into the housing 100.
As a variation, the inlet distribution plate does not need to be provided with the first through holes, wherein an annular gap is provided between the outer edge of the inlet distribution plate and the casing 100, and the gas can continue to flow through the annular gap.
As shown in fig. 3, the first air outlet 120 is plural, and the plural first air outlets 120 are arranged at intervals along the circumferential direction of the casing 100; the sum of the areas of the first air outlets 120 is not greater than the area of the air inlet 110, and this arrangement can avoid the situation that the air cannot be uniformly distributed due to the excessively large opening area of the first air outlets 120.
The plurality of first air outlets 120 are uniformly arranged along the circumferential direction of the casing 100, and the number of the plurality of first air outlets 120 is 4 to 20, for example, 4, 5, 6, 7, 8, and the like, which is not suitable for being too large to increase the resistance of the gas flow.
Further, as shown in fig. 1 or fig. 4, a sleeve 600 is fixedly sleeved outside the casing 100, and a closed air outlet cavity is defined between the sleeve 600 and the outer surface of the casing 100; the sleeve 600 is provided with a second air outlet 610, and the second air outlet 610 and the first air outlet 120 are both communicated with the air outlet cavity. The aforesaid arrangement enables the heated gas in the accommodating chamber to be discharged into the gas outlet chamber through the plurality of first gas outlets 120, that is, the gas coming from a plurality of directions is collected in the gas outlet chamber and discharged through the second gas outlet 610 on the gas outlet chamber. Compared with the prior art in which one gas outlet is directly formed in the housing 100, the gas heating device in the foregoing arrangement can uniformly distribute gas in the accommodating cavity, so that the flow field in the accommodating cavity is stable, and the heat exchange area can be fully utilized (this effect can be directly and meaningfully obtained by those skilled in the art according to the contents described in the specification).
In the gas heating device, after the gas passes through the central through hole of the last second baffle plate 320, the fluid direction is changed, the gas flows to the periphery of the heat exchange tube bundle 200, then flows into the gas outlet cavity from the plurality of first gas outlets 120 uniformly formed on the shell 100, is collected, and flows out from the second gas outlets 610 formed on the sleeve 600, thereby completing the heat exchange process.
Referring to fig. 4, the casing 100 is disposed eccentrically from the sleeve 600 in a direction away from the second air outlet 610.
Wherein, the outer diameter of the sleeve 600 is 50-500 mm larger than the inner diameter of the shell 100; the length of the sleeve 600 (the length direction and the extending direction of the housing 100) is 1 to 3 times the diameter of the second air outlet 610; the eccentric distance between the casing 100 and the sleeve 600 is 10-200 mm.
Referring to fig. 4 again, in this embodiment, the eccentric distance between the casing 100 and the sleeve 600 is 100 mm; specifically, the center of the projection circle of the casing 100 is O1The center of the projection circle of the sleeve 600 is O2Wherein O is1And O2The distance between them is 100 mm.
Because the total gas amount of the first gas outlets 120 (top gas outlets) on the casing 100 closest to the second gas outlets 610 is the largest, the total gas amount of the first gas outlets 120 (bottom gas outlets) on the casing 100 farthest from the second gas outlets 610 is the smallest, after the casing 100 and the sleeve 600 are eccentrically arranged, the gas passages between the sleeve 600 and the bottom gas outlets become narrow, the corresponding total gas amount is the smallest, the gas passages between the sleeve 600 and the top gas outlets become wide, and the corresponding total gas amount is the largest, the gas resistances of the two gas passages are relatively balanced, the uniform distribution of the gas at the plurality of first gas outlets 120 is further ensured, the heat exchange surface can be fully and effectively utilized, and the heat exchange efficiency is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A gas heating apparatus, comprising: a shell (100) having a receiving cavity, and a heat exchange tube bundle (200) and a set of baffles both disposed within the receiving cavity;
the shell (100) comprises an air inlet (110) and a first air outlet (120) which are communicated with the accommodating cavity;
the baffle group is positioned between the gas inlet (110) and the first gas outlet (120), the baffle group comprises a plurality of baffles which are arranged at intervals along the extending direction of the shell (100), and the shell (100) and the plurality of baffles form a zigzag flow channel for the gas to be heated to pass through;
the number of the first air outlets (120) is multiple, and the multiple first air outlets (120) are arranged at intervals along the circumferential direction of the shell (100);
the fixed cover in the outside of casing (100) is equipped with sleeve (600), sleeve (600) with enclose into inclosed gas outlet cavity between the surface of casing (100), be equipped with second gas outlet (610) on sleeve (600), second gas outlet (610) with first gas outlet (120) all with the gas outlet cavity communicates with each other.
2. The gas heating apparatus according to claim 1, wherein the zigzag flow passage includes a first flow passage close to an inner wall of the housing (100) and a second flow passage located at a central position in a height direction of the housing (100), the first flow passage and the second flow passage being arranged at a distance.
3. The gas heating device according to claim 2, wherein the set of baffles comprises a first baffle plate (310) and a second baffle plate (320) both arranged at an angle to the extension of the housing (100);
the first annular flow channel is formed between the outer edge of the first baffle plate (310) and the inner wall of the shell (100), and the second annular flow channel is arranged on the second baffle plate (320).
4. The gas heating apparatus according to claim 3, wherein the first baffle plate (310) and the second baffle plate (320) are provided at least two pieces, and the first baffle plate (310) and the second baffle plate (320) are alternately arranged.
5. The gas heating device according to claim 4, wherein one of the second baffle plates (320) is located at a position of the housing (100) near the first gas outlet (120).
6. The gas heating device according to claim 3, wherein the cross-sectional shape of the receiving chamber is circular, the first baffle plate (310) is a circular plate, and the second baffle plate (320) is a circular ring plate;
the diameter of the first baffle plate (310) is 0.5-0.9 times of the inner diameter of the shell (100);
and/or the diameter of the inner circle of the second baffle plate (320) is 0.5-0.9 times of the inner diameter of the shell (100);
and/or the diameter of the outer circle of the second baffle plate (320) is 0-50 mm smaller than the inner diameter of the shell (100).
7. Gas heating device according to any one of claims 1-6, characterized in that a flow equalizing structure (500) is provided at the gas inlet (110), the flow equalizing structure (500) being located inside the housing (100).
8. The gas heating device according to claim 7, wherein the flow equalizing structure (500) comprises an inlet distribution plate, the inlet distribution plate is fixedly arranged relative to the housing (100), and a plurality of first through holes are uniformly arranged on the inlet distribution plate.
9. The gas heating device according to any one of claims 1 to 6, wherein the sum of the areas of the plurality of first gas outlets (120) is not greater than the area of the gas inlet (110).
10. A gas heating device according to any one of claims 1-6, characterized in that the housing (100) is arranged eccentrically to the sleeve (600) in a direction away from the second gas outlet (610).
CN202022218652.6U 2020-09-30 2020-09-30 Gas heating device Active CN212320079U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022218652.6U CN212320079U (en) 2020-09-30 2020-09-30 Gas heating device

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Application Number Priority Date Filing Date Title
CN202022218652.6U CN212320079U (en) 2020-09-30 2020-09-30 Gas heating device

Publications (1)

Publication Number Publication Date
CN212320079U true CN212320079U (en) 2021-01-08

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Application Number Title Priority Date Filing Date
CN202022218652.6U Active CN212320079U (en) 2020-09-30 2020-09-30 Gas heating device

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