CN213984056U - Condensation heat exchanger and gas condensing furnace - Google Patents
Condensation heat exchanger and gas condensing furnace Download PDFInfo
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- CN213984056U CN213984056U CN202022360234.0U CN202022360234U CN213984056U CN 213984056 U CN213984056 U CN 213984056U CN 202022360234 U CN202022360234 U CN 202022360234U CN 213984056 U CN213984056 U CN 213984056U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The utility model discloses a condensation heat exchanger and gas condensing furnace, the condensation heat exchanger includes: the shell comprises a flue gas condensation cavity arranged in the shell and a waterway channel wrapping the periphery of the flue gas condensation cavity; the combustion chamber extends into the flue gas condensation cavity from one side wall close to the top of the condensation heat exchanger; the heat exchange bulge extends from the inner wall of the flue gas condensation cavity to the center of the cavity; the heat exchange bulges higher than the combustion chamber are of a plurality of sheet structures which are arranged in parallel, and the heat exchange bulges lower than the combustion chamber are of a columnar structure. The utility model provides a condensing heat exchanger has designed the heat transfer of isostructure protruding to the position of combustion chamber, has still strengthened the heat transfer effect when playing the guide flue gas air current, is fit for using widely.
Description
Technical Field
The utility model belongs to the technical field of the gas condensing furnace, specifically speaking relates to a condensation heat exchanger and gas condensing furnace. The whole condensation heat exchanger is molded by adopting an aluminum casting process, the combustion chamber is completely arranged in the heat exchanger, and meanwhile, heat exchange bulges with different structures are designed around the combustion chamber, so that the condensation heat exchanger has a good heat exchange effect and also has a function of guiding flue gas flow.
Background
The gas condensing furnace has higher heat efficiency, energy conservation and environmental protection, and is increasingly favored by consumers. The principle of condensation refers to that the high-temperature flue gas releases heat carried by the high-temperature flue gas in the process of meeting condensation, so that the heat of the water body is fully utilized to increase heating heat. The energy in the waste gas is recovered by the condensation of the flue gas, so that the heat efficiency is over 100 percent, and the energy consumption is saved.
In the prior art, a stainless steel or aluminum heat exchanger is usually used as a gas condensing furnace product, and the used water path material and the high-temperature flue gas material are made of the same material. However, electrolytic corrosion caused by the water channel due to the use of the aluminum piece water channel can accelerate the failure of the material due to the corrosion of the inner layer and the outer layer. The stainless steel heat exchanger has the problems of uneven temperature, pinhole corrosion and the like due to high-temperature flue gas corrosion and internal scaling, and reliability is affected. In the case of the aluminum condensing heat exchanger, the poor arrangement position of the combustion chamber and the heat exchange part can also cause the problem of insufficient heat efficiency.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in overcoming prior art's is not enough, provides a condensation heat exchanger with gas condensing furnace, locates the inside of heat exchanger completely with the combustion chamber, centers on simultaneously the combustion chamber has designed the heat transfer of isostructure protruding, except playing good heat transfer effect, has still played the effect of guide flue gas air current to the heat exchange efficiency of condensing furnace has been increased.
In order to solve the technical problem, the utility model adopts the following basic concept:
the utility model provides a condensation heat exchanger, include:
the shell comprises a flue gas condensation cavity arranged in the shell and a waterway channel wrapping the periphery of the flue gas condensation cavity;
the combustion chamber extends into the flue gas condensation cavity from one side wall close to the top of the condensation heat exchanger;
the heat exchange bulge extends from the inner wall of the flue gas condensation cavity to the center of the cavity;
the heat exchange bulges higher than the combustion chamber are of a plurality of sheet structures which are arranged in parallel, and the heat exchange bulges lower than the combustion chamber are of a columnar structure.
In the above scheme, the top surface in flue gas condensation chamber is often located with the combustion chamber to the condensation heat transfer structure of prior art for the flue gas top-down sends into the condensation chamber and carries out the condensation. However, the flue gas at the top of the flue gas condensation cavity is prone to floating under the action of high temperature, so that the condensation heat exchange effect at the top of the condensation cavity is not as expected. The utility model provides a combustion chamber then stretches into the design from one side that condensation heat exchanger is close to the top, leaves certain space between its and the top in condensation chamber, can be so that the time that the high temperature flue gas that the burning produced stops at the structure top is more of a specified duration to the extension water absorbs the thermal time of high temperature flue gas, has improved heat transfer effect. The combustion chamber is a long barrel-shaped structure wrapped by a filter screen, and the combusted flue gas enters the flue gas condensation cavity through the filter screen.
The utility model discloses a further scheme does: the length direction of the sheet-shaped heat exchange bulge higher than the combustion chamber is perpendicular to the axial direction of the combustion chamber.
Among the above-mentioned scheme, because the high temperature flue gas is the trend of floating, consequently can follow the periphery diffusion of long tubbiness combustion chamber, to diffusing to the flue gas between combustion chamber and the condensation chamber top, because the caloric content is higher, the flue gas velocity of flow is very fast, consequently sets up the heat transfer arch into parallel slice, when carrying out the heat transfer to this part flue gas, plays the effect of guide to further carry downwards the flue gas through preliminary heat transfer and carry out the condensation.
The utility model discloses a further scheme does: the columnar heat exchange bulges lower than the combustion chamber extend oppositely from the inner walls of the two opposite sides of the flue gas condensation cavity.
In the above scheme, the heat transfer protrusion that is less than the combustor extends the setting in opposite directions from the both sides that the condensation chamber is relative, and the heat transfer protrusion of this part is columnar structure, can further increase with the area of contact of flue gas, improves the heat transfer effect. And simultaneously, the columnar heat transfer is protruding can play the enrichment effect to the condensation steam in the flue gas, and when the liquid drop that the steam that the protruding surface of heat transfer enriched formed fell, can be blockked by the columnar heat transfer of bottom, can improve the effect that the comdenstion water produced and prevent to carry too much steam in the low temperature flue gas on the one hand, on the other hand also prevents that the comdenstion water from forming too fast and leading to the excessive of water collector.
In the above scheme, the term "higher than the combustion chamber" means a horizontal plane higher than the radial center of the combustion chamber, and the term "lower than the combustion chamber" means a horizontal plane lower than the radial center of the combustion chamber.
The utility model discloses a further scheme does: the length of the columnar heat exchange bulge is gradually increased from the upper part to the lower part of the flue gas condensation cavity.
The utility model discloses a further scheme does: the distribution density of the columnar heat exchange bulges in the flue gas condensation cavity is gradually increased from top to bottom.
Among the above-mentioned scheme, the high temperature flue gas is after preliminary heat transfer, and the steam that produces is less, and consequently the protruding length of column heat transfer and the distribution density that are located gas condensation chamber upper portion are all less, and carry out the heat transfer along with flue gas top-down, and its temperature descends gradually, produces a large amount of steam simultaneously, consequently increases the protruding length of heat transfer and distribution density, is in order to accomplish the heat transfer as far as possible on the one hand, and on the other hand then carries too much steam in order to prevent to carry in the exhaust flue gas.
The utility model discloses a further scheme does: the upper part of the shell is of a horizontally placed cylindrical structure, and the combustion chamber extends into the smoke condensation cavity from one end of the cylindrical structure along the axis; the lower part of casing certainly cylindric structure bottom throat setting down, the throat part comprises two outer walls of parallel, the space between two outer walls communicates with each other with cylindric inner space, forms flue gas condensation chamber, flue gas condensation chamber bottom is equipped with the opening that supplies low temperature flue gas and comdenstion water to discharge.
In the above scheme, the top of the condensing heat exchanger is of a cylindrical structure with a large volume, the bottom of the condensing heat exchanger is provided with two parallel outer walls, the length of the two parallel outer walls is the same as the axial length of the cylinder, a necking is formed, and the condensing cavity inside the condensing heat exchanger is also provided with the same necking structure. The larger space at the top part also can participate in more heat exchange processes at the top part for the high-temperature flue gas, so that the heat exchange effect is improved.
The utility model discloses a further scheme does: the space between the outer wall of the shell and the outer wall of the flue gas condensation cavity forms a water channel, the water flow direction in the water channel is parallel to the axial direction of the combustion chamber, and the water inlet and the water outlet of the water channel are arranged at two ends of the shell along the water flow direction.
Among the above-mentioned scheme, when setting up the combustion chamber at gas condensation chamber top surface among the prior art, can only provide waterway channel around it. And the utility model discloses owing to arrange the central part on condensation chamber upper portion in with the combustion chamber, make waterway can encircle the whole periphery setting in condensation chamber, further increased the heat transfer area of water among top high temperature flue gas and the waterway, improved heat transfer effect.
The utility model discloses a further scheme does: the water channel is provided with a plurality of heat exchange ribs on the inner wall of one side close to the flue gas condensation cavity, and the length direction of the heat exchange ribs is the same as the water flow direction.
In the above scheme, the outer wall of flue gas condensation chamber is same structure with the inner wall that waterway channel is close to condensation chamber one side, sets up the heat transfer muscle here and can further improve the heat transfer effect.
The utility model discloses a further scheme does: the shell and the smoke condensing cavity, the water channel and the heat exchange bulge in the shell are of an integrated structure formed by adopting an aluminum casting process. The aqueduct connected with the waterway channel is made of oxygen-free copper material.
In the scheme, the heat exchanger and the water guide pipe are made of different materials, and the heat exchanger part is made of aluminum materials which can not only prevent corrosion, but also have higher heat conductivity; the aqueduct uses oxygen-free copper material with higher surface quality and better heat exchange effect. The water guide pipe is connected with the water outlet and the water inlet of the waterway channel. On the basis, the corrosion of high-temperature flue gas to the heat exchanger can be avoided while the heat exchange efficiency is increased. In addition, through the combined use of the two materials, the heat exchanger has smaller volume and lighter weight while achieving the original heat exchanger effect.
The utility model also provides a gas condensing furnace, gas condensing furnace's top is equipped with mixed fan to send into gas and air as above in condensing heat exchanger's the combustor to discharge low temperature flue gas and the comdenstion water after the heat transfer condensation from flue gas condensation chamber to the collection petticoat pipe and the comdenstion water collector of locating gas condensing furnace bottom.
After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has:
1. the utility model provides a combustion chamber is designed to extend from one side of the condensation heat exchanger close to the top, and a certain space is left between the combustion chamber and the top of the condensation cavity, so that high-temperature flue gas generated by combustion can stay at the top of the structure for a longer time, thereby prolonging the time for absorbing the heat of the high-temperature flue gas by a water body and improving the heat exchange effect;
2. the utility model sets the heat exchange bulges higher than the combustion chamber into parallel sheets, which can play the role of guiding the flue gas while exchanging heat for the high-temperature flue gas, so as to further convey the flue gas after preliminary heat exchange downwards for condensation;
3. the heat exchange bulge lower than the combustion chamber is arranged into a column shape, so that condensed water vapor in flue gas can be enriched, and when liquid drops formed by the water vapor enriched on the surface of the heat exchange bulge fall, the liquid drops can be blocked by the column-shaped heat exchange bulge at the bottom, on one hand, the effect of generating condensed water can be improved, excessive water vapor is prevented from being carried in low-temperature flue gas, and on the other hand, excessive overflow of a water receiving tray caused by too fast formation of the condensed water is also prevented;
4. the utility model provides a waterway can encircle the whole periphery setting in condensation chamber, has further increased the heat transfer area of water among top high temperature flue gas and the waterway, has improved the heat transfer effect.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic axial sectional structure diagram of a condensing heat exchanger according to the present invention;
FIG. 2 is a schematic view of the arrangement of the combustion chamber of the condensing heat exchanger of the present invention;
fig. 3 is a schematic diagram of the arrangement mode of the flaky heat exchange protrusion of the condensation heat exchanger.
In the figure: 1-heat exchange protrusion, 11-flaky heat exchange protrusion, 12-columnar heat exchange protrusion, 2-flue gas condensation cavity, 21-opening, 3-waterway channel, 31-heat exchange rib, 32-water inlet, 33-water outlet, 4-combustion chamber, and 5-shell.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "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.
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; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figures 1-3, the utility model provides a condensation heat exchanger is with gas condensing furnace, locates the inside of heat exchanger completely with combustion chamber 4, centers on simultaneously combustion chamber 4 has designed the protruding 1 of heat transfer of isostructure not, except playing good heat transfer effect, has still played the effect of guide flue gas air current to the heat exchange efficiency of condensing furnace has been increased.
The combustion chamber 4 is arranged in the lateral wall of the top of the condensing heat exchanger in a stretching mode, an opening at one end of the combustion chamber is formed in the lateral wall, and the stretching portion is of a long barrel-shaped structure wrapped by a filter screen, so that combusted smoke enters the smoke condensing cavity 2 through the filter screen. In the condensation heat exchange structure in the prior art, the combustion chamber is usually arranged on the top surface of the flue gas condensation cavity, so that the flue gas is sent into the condensation cavity from top to bottom for condensation. However, the flue gas at the top of the flue gas condensation cavity is prone to floating under the action of high temperature, so that the condensation heat exchange effect at the top of the condensation cavity is not as expected. The utility model provides a certain space is all left rather than flue gas condensation chamber 2 on every side to combustion chamber 4, consequently can make because of the higher flue gas of come-up of temperature longer at 2 top dwell times in flue gas condensation chamber to take place more thorough heat transfer.
Example 1
In this embodiment, a condensing heat exchanger is provided, as shown in fig. 1, including:
the shell 5 comprises a flue gas condensation cavity 2 arranged in the shell and a waterway channel 3 wrapping the periphery of the flue gas condensation cavity 2;
the combustion chamber 4 extends into the flue gas condensation cavity 2 from one side wall close to the top of the condensation heat exchanger;
the heat exchange bulge 1 extends from the inner wall of the flue gas condensation cavity 2 to the center of the cavity;
the heat exchange bulges 1 higher than the combustion chamber are of a plurality of sheet structures arranged in parallel, and the heat exchange bulges lower than the combustion chamber are of a columnar structure.
In this embodiment, as shown in fig. 1 and 2, the utility model provides a combustion chamber is that one side that is close to the top from the condensation heat exchanger stretches into the design, and dotted line portion is the profile of combustion chamber 4 in flue gas condensation chamber 2 in fig. 2 promptly, leaves certain space between its and condensation chamber 2's the top, can be so that the time that the high temperature flue gas that the burning produced stops at the structure top is more of a specified duration to the extension water absorbs the thermal time of high temperature flue gas, has improved heat transfer effect. The combustion chamber 4 is a full premix burner, and can be a long barrel-shaped structure wrapped by a filter screen, and the combusted flue gas enters a flue gas condensation cavity through the filter screen.
In the present embodiment, as shown in fig. 1 and 3, the length direction of the heat exchanging fin projections 11 higher than the combustion chamber 4 is perpendicular to the axial direction of the combustion chamber 4.
In this embodiment, because the high temperature flue gas is the trend of floating, consequently can follow the periphery diffusion of long tubbiness combustion chamber, to diffusing to the flue gas between combustion chamber 4 and the 2 tops of condensation chamber, because the caloric content is higher, the flue gas velocity of flow is very fast, consequently sets up the heat transfer arch into parallel slice, when carrying out the heat transfer to this part flue gas, plays the effect of guide to further carry downwards the flue gas through preliminary heat transfer and carry out the condensation. The dotted line of the upper half of the cylindrical structure in fig. 3 is the arrangement of the plurality of parallel plate-shaped heat exchange protrusions 11 in the flue gas condensation chamber 2. The arrows in fig. 1 indicate the flow direction of the high-temperature flue gas after combustion.
In this embodiment, as shown in fig. 1, the columnar heat exchange protrusions 12 lower than the combustion chamber 4 extend from the inner walls of the two opposite sides of the flue gas condensation chamber 2 in opposite directions.
In this embodiment, the heat transfer protrusion 1 that is less than combustor 4 extends the setting in opposite directions from the both sides that condensation chamber 2 is relative, and the heat transfer protrusion of this part is columnar structure, can further increase with the area of contact of flue gas, improves the heat transfer effect. And simultaneously, columnar heat transfer arch 12 can play the enrichment effect to the condensation steam in the flue gas, and when the liquid drop that the steam that gathers on the protruding 12 surface of columnar heat transfer fell down, can be blockked by the protruding 12 of columnar heat transfer of bottom, can improve the effect that the comdenstion water produced and prevent to carry too much steam in the low temperature flue gas on the one hand, on the other hand also prevents that the comdenstion water from forming too fast and leading to the excessive of water collector excessive.
In the present embodiment, the above the combustion chamber 4 refers to a horizontal plane above the radial center of the combustion chamber 4, and the concept below the combustion chamber 4 refers to a horizontal plane below the radial center of the combustion chamber 4.
In this embodiment, as shown in fig. 1, the length of the columnar heat exchange protrusion 12 gradually increases from the upper portion to the lower portion of the flue gas condensation chamber 2.
In this embodiment, as shown in fig. 1, the distribution density of the columnar heat exchange protrusions 12 in the flue gas condensation chamber 2 gradually increases from top to bottom.
In this embodiment, the high temperature flue gas is after preliminary heat transfer, and the steam that produces is less, and consequently the length and the distribution density that are located the protruding 12 of column heat transfer on gas condensation chamber upper portion are all less, and along with flue gas top-down carries out the heat transfer, and its temperature descends gradually, produces a large amount of steam simultaneously, consequently increases the protruding 12 length of column heat transfer and distribution density, is in order to accomplish the heat transfer as far as possible on the one hand, and on the other hand then carries too much steam in order to prevent to carry in the exhaust flue gas.
In this embodiment, as shown in fig. 1 and 2, the upper portion of the housing 5 is a horizontally placed cylindrical structure, and the combustion chamber extends into the flue gas condensation chamber 2 from one end of the cylindrical structure along the axis; the lower part of the shell 5 is arranged from the bottom of the cylindrical structure to the downward necking, the necking part is composed of two parallel outer walls, the space between the two outer walls is communicated with the cylindrical inner space to form the flue gas condensation cavity 2, and the bottom of the flue gas condensation cavity 2 is provided with an opening 21 for discharging low-temperature flue gas and condensed water.
In this embodiment, the top of the condensing heat exchanger is a cylindrical structure with a large volume, and the bottom of the condensing heat exchanger is two parallel outer walls, the length of the two parallel outer walls is the same as the axial length of the cylinder, so that a necking arrangement is formed, and the condensing cavity 2 inside the condensing heat exchanger has the same necking structure. The larger space at the top part also can participate in more heat exchange processes at the top part for the high-temperature flue gas, so that the heat exchange effect is improved.
In this embodiment, as shown in fig. 1 to 3, the space between the outer wall of the casing and the outer wall of the flue gas condensation chamber 2 forms the waterway channel 3, the water flow direction in the waterway channel 3 is parallel to the axial direction of the combustion chamber 4, and the water inlet 32 and the water outlet 33 of the waterway channel 3 are arranged at two ends of the casing along the water flow direction. The waterway channels 3 converge at two ends of the condensing heat exchanger, so that the arrangement positions of the water outlet 32 and the water inlet 33 can be adjusted according to the convergence position, and are only schematic positions in fig. 2 and 3.
In this embodiment, when the combustion chamber 4 is disposed on the top surface of the gas condensation chamber 2 in the prior art, the water passage 3 can be provided only around the combustion chamber. And the utility model discloses owing to arrange combustion chamber 4 in the central part on 2 upper portions in condensation chamber, make waterway 3 can encircle the whole periphery setting in condensation chamber 2, has further increased the heat transfer area of water in top high temperature flue gas and waterway 3, has improved heat transfer effect.
In this embodiment, as shown in fig. 1, the inner wall of the waterway channel 3 near the flue gas condensation chamber 2 is provided with a plurality of heat exchange ribs 31, and the length direction of the heat exchange ribs 31 is the same as the water flow direction.
In this embodiment, the outer wall of flue gas condensation chamber 2 is same structure with the inner wall that waterway channel 3 is close to condensation chamber one side, and this part sets up heat transfer muscle 31 and can further improve the heat transfer effect. In fig. 1, the zigzag structure shown in the upper right waterway channel is a section of the plurality of heat exchange ribs 31 in the axial direction of the flue gas condensation chamber 2, and the heat exchange ribs 31 are also arranged on the inner sides of the other waterway channels 3 in fig. 1, but are not marked in the figure.
In this embodiment, the housing 5 and the flue gas condensation chamber 2, the water channel 3 and the heat exchange protrusion 1 inside the housing are an integrated structure formed by an aluminum casting process. The aqueduct connected with the waterway channel is made of oxygen-free copper material.
In the embodiment, the heat exchanger and the water guide pipe are made of different materials, and the heat exchanger part is made of an aluminum material which can prevent corrosion and has higher heat conductivity; the aqueduct uses oxygen-free copper material with higher surface quality and better heat exchange effect. The water guide pipe is connected with the water outlet and the water inlet of the waterway channel. On the basis, the corrosion of high-temperature flue gas to the heat exchanger can be avoided while the heat exchange efficiency is increased. In addition, through the combined use of the two materials, the heat exchanger has smaller volume and lighter weight while achieving the original heat exchanger effect.
Example 2
In this embodiment, a gas condensing furnace is further provided, and a mixing fan is arranged at the top of the gas condensing furnace to send gas and air into the combustion chamber 4 of the condensing heat exchanger as in embodiment 1, and discharge low-temperature flue gas and condensed water after heat exchange condensation from the flue gas condensing cavity 2 to a smoke collecting hood and a condensed water collector which are arranged at the bottom of the gas condensing furnace.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.
Claims (10)
1. A condensing heat exchanger, comprising:
the shell comprises a flue gas condensation cavity arranged in the shell and a waterway channel wrapping the periphery of the flue gas condensation cavity;
the combustion chamber extends into the flue gas condensation cavity from one side wall close to the top of the condensation heat exchanger;
the heat exchange bulge extends from the inner wall of the flue gas condensation cavity to the center of the cavity;
the heat exchange bulges higher than the combustion chamber are of a plurality of sheet structures which are arranged in parallel, and the heat exchange bulges lower than the combustion chamber are of a columnar structure.
2. A condensing heat exchanger according to claim 1, wherein the length direction of the heat exchanging protrusions is perpendicular to the axial direction of the combustion chamber.
3. A condensing heat exchanger according to claim 1 wherein the columnar heat exchange protrusions below the combustion chamber extend toward each other from the inner walls of the two opposite sides of the flue gas condensing cavity.
4. A condensing heat exchanger according to claim 3 wherein the length of the columnar heat exchange protrusions increases gradually from the upper part to the lower part of the flue gas condensing chamber.
5. A condensing heat exchanger according to claim 3, wherein the distribution density of the columnar heat exchange protrusions in the flue gas condensing cavity is gradually increased from top to bottom.
6. A condensing heat exchanger according to claim 1, wherein the upper part of the shell is a horizontally placed cylindrical structure, and the combustion chamber extends into the flue gas condensing cavity from one end of the cylindrical structure along the axis; the lower part of casing certainly cylindric structure bottom throat setting down, the throat part comprises two outer walls of parallel, the space between two outer walls communicates with each other with cylindric inner space, forms flue gas condensation chamber, flue gas condensation chamber bottom is equipped with the opening that supplies low temperature flue gas and comdenstion water to discharge.
7. A condensing heat exchanger according to claim 6, characterized in that the space between the outer wall of the shell and the outer wall of the flue gas condensing cavity forms the waterway channel, the water flow direction in the waterway channel is parallel to the axial direction of the combustion chamber, and the water inlet and the water outlet of the waterway channel are arranged at two ends of the shell along the water flow direction.
8. A condensing heat exchanger according to claim 7, wherein the waterway channel is provided with a plurality of heat exchange ribs on the inner wall of one side close to the flue gas condensing cavity, and the length direction of the heat exchange ribs is the same as the water flow direction.
9. The condensing heat exchanger of any one of claims 1 to 8, wherein the shell and the flue gas condensing cavity, the water channel and the fins inside the shell are of an integrated structure formed by adopting an aluminum casting process.
10. A gas condensing furnace is characterized in that a mixing fan is arranged at the top of the gas condensing furnace to feed gas and air into a burner of the condensing heat exchanger according to any one of claims 1 to 9, and low-temperature flue gas and condensed water after heat exchange and condensation are discharged from a flue gas condensing cavity to a smoke collecting hood and a condensed water collector which are arranged at the bottom of the gas condensing furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022360234.0U CN213984056U (en) | 2020-10-21 | 2020-10-21 | Condensation heat exchanger and gas condensing furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022360234.0U CN213984056U (en) | 2020-10-21 | 2020-10-21 | Condensation heat exchanger and gas condensing furnace |
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| CN213984056U true CN213984056U (en) | 2021-08-17 |
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| CN202022360234.0U Active CN213984056U (en) | 2020-10-21 | 2020-10-21 | Condensation heat exchanger and gas condensing furnace |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |