CN219283377U - Heat exchanger and water heater comprising same - Google Patents
Heat exchanger and water heater comprising same Download PDFInfo
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- CN219283377U CN219283377U CN202320838997.2U CN202320838997U CN219283377U CN 219283377 U CN219283377 U CN 219283377U CN 202320838997 U CN202320838997 U CN 202320838997U CN 219283377 U CN219283377 U CN 219283377U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The utility model provides a heat exchanger and a water heater comprising the same, and belongs to the technical field of water heaters. The heat exchanger comprises a heat exchange tube and a heat exchange shell, wherein a flue gas channel is formed in the heat exchange shell, the heat exchanger further comprises a heat storage tube and heat exchange fins, the heat storage tube contains heat storage materials, the heat storage tube and at least part of the heat exchange tube are arranged in the flue gas channel, and the heat storage tube is connected with the part of the heat exchange tube, which is arranged in the flue gas channel, through the heat exchange fins. By arranging the heat storage pipe containing the heat storage material in the heat exchanger, the water temperature in the heat exchange pipe can be balanced and adjusted: the heat storage pipe can store heat in the flue gas in the heat storage pipe, when water is stopped and boiled, if the water temperature is lower, the heat storage pipe can transfer the stored heat to water with lower temperature in the heat exchange pipe through the heat exchange fins, so that the problem of water stopping and temperature drop is solved; if the water temperature is higher, the water with higher temperature in the heat exchange tube can transfer heat to the heat storage tube through the heat exchange fins, so that the problem of water cut-off and temperature rise is solved.
Description
Technical Field
The utility model relates to the technical field of water heaters, in particular to a heat exchanger and a water heater comprising the same.
Background
In the use process of the water heater in the current market, when the water heater is stopped and boiled water is supplied, the load can not reach the target value instantly after ignition due to the fact that the machine needs to be re-ignited, and the water temperature can not reach the target value instantly due to the physical characteristics of heat exchange efficiency and the like, so that the water temperature can drop firstly, namely the water stopping temperature drops. On the other hand, because the boiled water is sometimes boiled again in a short time after the water is stopped, the heat stored on the heat exchanger after the fire is stopped is continuously conducted to the water in the heat exchanger because the heat exchanger has certain thermal inertia, so that the water temperature of the part is overhigh, and the water is stopped and the temperature rises.
Disclosure of Invention
The utility model aims to overcome the defects of water cut-off temperature drop and water cut-off temperature rise of a water heater in the prior art, and provides a heat exchanger capable of balancing and adjusting water temperature and the water heater comprising the heat exchanger.
The utility model solves the technical problems by the following technical scheme:
the heat exchanger comprises a heat exchange tube and a heat exchange shell, wherein a flue gas channel is formed in the heat exchange shell, the heat exchanger further comprises a heat storage tube and heat exchange fins, the heat storage tube contains a heat storage material, the heat storage tube and at least part of the heat exchange tube are arranged in the flue gas channel, and the heat storage tube is connected with the part of the heat exchange tube which is arranged in the flue gas channel through the heat exchange fins.
In the scheme, the heat storage pipe containing the heat storage material is arranged in the heat exchanger, so that the water temperature in the heat exchange pipe can be balanced and adjusted: the heat storage pipe can store heat in the flue gas in the heat storage pipe, when water is stopped and boiled, if the water temperature is lower, the heat storage pipe can transfer the stored heat to water with lower temperature in the heat exchange pipe through the heat exchange fins, so that the problem of water stopping and temperature drop is solved; if the water temperature is higher, the water with higher temperature in the heat exchange tube can transfer heat to the heat storage tube through the heat exchange fins, so that the problem of water cut-off and temperature rise is solved.
Preferably, the heat storage pipe is arranged above a part of the heat exchange pipe arranged in the flue gas channel.
In the scheme, because the flue gas flows from the lower part of the flue gas channel to the upper part, the heat storage pipe is arranged above the part of the heat exchange pipe, which is arranged in the flue gas channel, the heat exchange of the heat exchange pipe can be preferentially completed, the heat storage pipe stores the waste heat generated by exchanging heat with the heat exchange pipe in the flue gas, the heat exchange efficiency of the heat exchange pipe is not affected, and the energy consumption efficiency of the whole heat exchanger is improved.
Preferably, the heat exchange tube comprises a water inlet section, a coil section, a heat exchange section and a water outlet section which are connected in sequence; the coil pipe section is arranged around the periphery of the heat exchange shell, and the heat exchange section is arranged in the flue gas channel.
In the scheme, the water inlet section is used for cold water inflow, and the water outlet section is used for hot water outflow; the coil pipe section is arranged around the periphery of the heat exchange shell, so that the flow path of cold water in the heat exchange pipe can be increased, the cold water has more time to exchange heat with the heat exchange shell, and the temperature rises as soon as possible; the heat exchange section is arranged in the flue gas channel and is connected with heat exchange fins, and heat in the flue gas can be directly contacted with the flue gas and transferred into water in the heat exchange section through the heat exchange fins, so that heat exchange of cold water is more fully completed.
Preferably, the flue gas channel comprises a flue gas inlet end and a flue gas outlet end; the coil pipe section surrounds the periphery of the heat exchange shell, the coil pipe section surrounds the flue gas inlet end to the flue gas outlet end, and the heat exchange section and the heat storage pipe are arranged in the flue gas outlet end.
In this scheme, through above-mentioned structural style, the coil pipe section encircles to the flue gas exit end from the flue gas entrance point, makes cold water have more time to carry out heat exchange with the heat exchange shell in advance, improves the temperature that gets into the heat exchange section to this heat exchange efficiency who improves heat exchanger.
Preferably, the heat exchange fin is arranged in the flue gas channel and connected with the heat exchange shell, and the heat exchange section and the heat storage tube are both arranged on the heat exchange fin in a penetrating way; the heat exchange fin is provided with a plurality of through holes for the heat exchange tubes and the heat storage tubes to pass through, the through holes are divided into a first group of through holes and a second group of through holes, the heat storage tubes pass through the first group of through holes, and the heat exchange tubes pass through the second group of through holes.
In the scheme, the heat exchange fins are connected with the heat exchange shell, so that the heat exchange fins are fixed in the flue gas channel; through setting up two sets of through-holes on heat transfer fin, make heat transfer pipe and heat accumulating pipe wear to establish a slice heat transfer fin simultaneously, from this accessible heat transfer fin transmits heat between heat transfer pipe and heat accumulating pipe.
Preferably, the heat storage tube is annular, the heat storage tube comprises a straight tube section and a bending section, the straight tube section is penetrated in the first group of through holes and penetrates out of two sides of the heat exchange shell, and the straight tube sections are connected through the bending section.
In this scheme, annular heat accumulation pipe simple structure, the installation of being convenient for, and be favorable to heat evenly distributed in the heat accumulation pipe, heat output is comparatively even also when the heat dissipation, and radiating efficiency is high.
Preferably, the heat exchange fin comprises a plurality of hollowed-out parts, and the hollowed-out parts are far away from the through holes.
In this scheme, keep away from the position of through-hole in the heat transfer fin and will absorb a part of heat, and because its position of keeping away from the through-hole carries out heat exchange's heat exchange efficiency with heat exchange tube or heat accumulation pipe also poor, digs the sky with it and establishes into fretwork portion, is favorable to flue gas entering fretwork portion, improves heat transfer fin's heat exchange efficiency, and reducible heat transfer fin's materials to reduce cost.
Preferably, a plurality of heat exchange fins are arranged in the flue gas channel, the heat exchange fins are arranged in parallel, and extend from one side inner wall in the heat exchange shell to the other side inner wall in the heat exchange shell along the extending direction of the part of the heat exchange tube, which is arranged in the flue gas channel.
In this scheme, a plurality of heat transfer fins extend to the opposite side inner wall in the heat exchange shell from one side inner wall in the heat exchange shell, increase the quantity of heat transfer fins as far as to further improve heat exchange efficiency.
Preferably, the heat storage material is sodium acetate trihydrate or paraffin wax.
In the scheme, sodium acetate trihydrate or paraffin is a heat storage material with a high latent heat value, and is economical and easy to obtain.
A water heater comprising a heat exchanger as described above.
The utility model has the positive progress effects that:
by arranging the heat storage pipe containing the heat storage material in the heat exchanger, the water temperature in the heat exchange pipe can be balanced and adjusted: the heat storage pipe can store heat in the flue gas in a heat storage material in the heat storage pipe, when water is stopped and boiled, if the water temperature in the heat exchange pipe is low, the heat storage pipe can transfer the stored heat to the water with low temperature in the heat exchange pipe through the heat exchange fins, so that the problem of water stopping temperature drop is solved; if the water temperature is higher, the water with higher temperature in the heat exchange tube can transfer heat to the heat storage tube through the heat exchange fins, so that the problem of water cut-off and temperature rise is solved.
Drawings
Fig. 1 is a schematic perspective view of a heat exchanger according to a preferred embodiment of the present utility model.
Fig. 2 is an exploded view of a heat exchanger according to a preferred embodiment of the present utility model.
Fig. 3 is a schematic perspective view of a heat exchange fin according to a preferred embodiment of the present utility model.
Reference numerals illustrate:
Flue gas inlet end 111
Flue gas outlet end 112
Curved section 320
Through hole 410
First group of through holes 411
Second set of vias 412
Hollowed-out part 420
Detailed Description
The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.
The present embodiment provides a water heater including a heat exchanger.
As shown in fig. 1-2, the heat exchanger comprises a heat exchange tube, a heat exchange shell 100, a heat storage tube 300 and heat exchange fins 400, wherein a flue gas channel 110 is formed in the heat exchange shell 100, the heat storage tube 300 contains a heat storage material, the heat storage tube 300 and at least part of the heat exchange tube are arranged in the flue gas channel 110, and the heat storage tube 300 is connected with the part of the heat exchange tube arranged in the flue gas channel 110 through the heat exchange fins 400.
By providing the heat storage pipe 300 containing the heat storage material in the heat exchanger, the water temperature in the heat exchange pipe can be adjusted in balance: the heat storage tube 300 can store heat in the flue gas in a heat storage material in the heat storage tube 300, when water is stopped and boiled again, if the water temperature is low, the heat storage tube 300 can transfer the stored heat to the water with low temperature in the heat exchange tube through the heat exchange fins 400, so that the problem of water stopping temperature drop is solved; if the water temperature is higher, the water with higher temperature in the heat exchange tube can transfer heat to the heat storage tube 300 through the heat exchange fins 400, so that the problem of water cut-off and temperature rise is solved.
Specifically, the heat exchange tube includes a water inlet section 210, a coil section 220, a heat exchange section 230 and a water outlet section 240, which are sequentially connected, the coil section 220 is disposed around the periphery of the heat exchange housing 100, and the heat exchange section 230 is disposed in the flue gas channel 110. The water inlet section 210 is used for inflow of cold water, the coil pipe section 220 is arranged around the periphery of the heat exchange shell 100, so that a flow path of the cold water in the heat exchange tube can be increased, the cold water has more time to exchange heat with the heat exchange shell 100, and the temperature rises as soon as possible; the heat exchange section 230 is arranged in the flue gas channel 110 and is connected with the heat exchange fins 400, so that the cold water can more fully complete heat exchange by directly contacting with the flue gas and transferring heat in the flue gas to water in the heat exchange section 230 through the heat exchange fins 400; the water outlet section 240 is used for supplying the heated hot water to flow out.
Specifically, the flue gas channel 110 comprises a flue gas inlet end 111 and a flue gas outlet end 112; around the periphery of the heat exchange housing 100, coil sections 220 surround from the flue gas inlet end 111 to the flue gas outlet end 112, and heat exchange sections 230 and heat storage tubes 300 are disposed within the flue gas outlet end 112. From this, high temperature flue gas gets into from flue gas entrance end 111, discharges from flue gas exit end 112 after the heat transfer, and heat transfer casing 100 is heated by high temperature flue gas, makes heat transfer casing 100 and coil pipe section 220 can carry out the heat exchange, and coil pipe section 220 encircles to flue gas exit end 112 from flue gas entrance end 111, makes cold water have more time and bigger heat transfer area carry out the heat exchange with heat transfer casing 100 in advance, improves the temperature that gets into heat transfer section 230 to this improves heat transfer efficiency of heat exchanger.
Specifically, the heat exchange fin 400 is disposed in the flue gas channel 110 and connected to the heat exchange housing 100, and the heat exchange section 230 and the heat storage tube 300 are both disposed through the heat exchange fin 400. As shown in fig. 3, the heat exchange fin 400 is provided with a plurality of through holes 410 through which the heat exchange tubes and the heat storage tubes 300 pass, the plurality of through holes 410 are divided into a first group of through holes 411 and a second group of through holes 412, the heat storage tubes 300 are arranged through the first group of through holes 411, and the heat exchange tubes are arranged through the second group of through holes 412.
The heat exchange fins 400 are connected with the heat exchange shell 100, so that the heat exchange fins 400 can be fixed in the flue gas channel 110; by providing two sets of through holes 410 in the heat exchange fin 400, one heat exchange fin 400 can be inserted into the heat exchange tube and the heat storage tube 300 at the same time, and thus heat can be transferred between the heat exchange tube and the heat storage tube 300 through the heat exchange fin 400.
Specifically, the flue gas channel 110 is provided with a plurality of heat exchange fins 400, the plurality of heat exchange fins 400 are arranged in parallel, and the plurality of heat exchange fins 400 extend from one inner wall in the heat exchange housing 100 to the other inner wall in the heat exchange housing 100 along the extending direction of the heat exchange section 230. The plurality of heat exchange fins 400 are extended from one side inner wall in the heat exchange housing 100 to the other side inner wall in the heat exchange housing 100, and the number of the heat exchange fins 400 is increased as much as possible to improve heat exchange efficiency. In order to further improve the heat exchange efficiency, the heat exchange fins 400 are arranged as densely as possible on the premise of ensuring that the flue gas circulates.
Further, as shown in fig. 3, the heat exchange fin 400 includes a plurality of hollowed-out portions 420, and the hollowed-out portions 420 are far away from the through holes 410. The position far away from the through hole 410 in the heat exchange fin 400 is required to absorb a part of heat, and the heat exchange efficiency of exchanging heat with the heat exchange tube or the heat storage tube 300 is poor because of the position far away from the through hole 410, and the hollowed-out part 420 is hollowed out, so that flue gas can enter the hollowed-out part 420, the heat exchange efficiency of the heat exchange fin 400 is improved, and the material consumption of the heat exchange fin 400 can be reduced, so that the cost is reduced.
In the present embodiment, the heat storage tube 300 is disposed above the portion of the heat exchange tube disposed in the flue gas channel 110 (i.e. the heat exchange section 230), and both the heat storage tube 300 and the heat exchange section 230 are horizontally disposed. Because the flue gas flows from the lower part to the upper part of the flue gas channel 110, the heat storage tube 300 is arranged above the heat exchange section 230, so that the heat exchange section 230 can finish heat exchange preferentially, the heat storage tube 300 stores the waste heat after exchanging heat with the heat exchange section 230 in the flue gas, the heat exchange efficiency of the heat exchange tube is not affected, and the energy consumption efficiency of the whole heat exchanger is improved.
In other alternative embodiments, the heat storage tube 300 may be disposed below the heat exchange section 230 or on the same horizontal plane as the heat exchange section 230, or the heat storage tube 300 and the heat exchange section 230 may be vertically disposed, and the heat storage tube 300 and the heat exchange section 230 may be disposed in the flue gas channel 110 while the heat exchange section 230 is disposed along the extending direction of the flue gas channel 110 according to the actual structure and the installation operation of the heat exchanger.
In this embodiment, the heat storage tube 300 is annular, and includes a straight tube section 310 and a curved section 320, the straight tube section 310 is disposed through the first group of through holes 411, and extends out from two sides of the heat exchange housing 100, and the straight tube sections 310 are connected by the curved section 320. The annular heat storage tube 300 has a simple structure, is convenient to install, is beneficial to the uniform distribution of heat in the heat storage tube 300, and has uniform heat output and high heat dissipation efficiency during heat dissipation.
In other alternative embodiments, the heat storage tube 300 may be provided in a straight line shape, and directly passes out from two sides of the heat exchange housing 100, so as to further reduce the installation difficulty; and a plurality of heat storage pipes 300 may be disposed side by side to improve heat storage capacity.
In this embodiment, the heat storage material is sodium acetate trihydrate or paraffin wax. Sodium acetate trihydrate or paraffin wax is a heat storage material with higher latent heat value, and is economical and easy to obtain. In other alternative embodiments, the heat storage material may also be a composite molten salt including sodium hydroxide or other heat storage material.
In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.
Claims (10)
1. The heat exchanger comprises a heat exchange tube and a heat exchange shell, wherein a flue gas channel is formed in the heat exchange shell, and the heat exchanger is characterized by further comprising a heat storage tube and heat exchange fins, wherein the heat storage tube contains a heat storage material, the heat storage tube and at least part of the heat exchange tube are arranged in the flue gas channel, and the heat storage tube is connected with the part of the heat exchange tube, which is arranged in the flue gas channel, through the heat exchange fins.
2. The heat exchanger of claim 1, wherein the heat storage tube is disposed above a portion of the heat exchange tube disposed in the flue gas channel.
3. The heat exchanger of claim 1, wherein the heat exchange tube comprises a water inlet section, a coil section, a heat exchange section, and a water outlet section connected in sequence;
the coil pipe section is arranged around the periphery of the heat exchange shell, and the heat exchange section is arranged in the flue gas channel.
4. A heat exchanger as claimed in claim 3, wherein the flue gas channel comprises a flue gas inlet end and a flue gas outlet end;
the coil pipe section surrounds the periphery of the heat exchange shell, the coil pipe section surrounds the flue gas inlet end to the flue gas outlet end, and the heat exchange section and the heat storage pipe are arranged in the flue gas outlet end.
5. A heat exchanger as claimed in claim 3, wherein the heat exchange fins are provided in the flue gas passage and connected to the heat exchange housing, the heat exchange sections and the heat storage tubes being provided through the heat exchange fins;
the heat exchange fin is provided with a plurality of through holes for the heat exchange tubes and the heat storage tubes to pass through, the through holes are divided into a first group of through holes and a second group of through holes, the heat storage tubes pass through the first group of through holes, and the heat exchange tubes pass through the second group of through holes.
6. The heat exchanger of claim 5, wherein the heat storage tube is annular, the heat storage tube comprises a straight tube section and a curved section, the straight tube section is arranged through the first group of through holes in a penetrating manner and penetrates out of two sides of the heat exchange shell, and the straight tube sections are connected through the curved section.
7. The heat exchanger of claim 5, wherein the heat exchange fin comprises a plurality of hollowed-out portions, the hollowed-out portions being remote from the through holes.
8. The heat exchanger of claim 5, wherein a plurality of the heat exchanging fins are provided in the flue gas passage, the plurality of the heat exchanging fins are arranged in parallel, and the plurality of the heat exchanging fins extend from one inner wall in the heat exchanging housing to the other inner wall in the heat exchanging housing along the extending direction of the portion of the heat exchanging tube provided in the flue gas passage.
9. The heat exchanger of claim 1, wherein the heat storage material is sodium acetate trihydrate or paraffin wax.
10. A water heater comprising a heat exchanger as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320838997.2U CN219283377U (en) | 2023-04-06 | 2023-04-06 | Heat exchanger and water heater comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320838997.2U CN219283377U (en) | 2023-04-06 | 2023-04-06 | Heat exchanger and water heater comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219283377U true CN219283377U (en) | 2023-06-30 |
Family
ID=86918986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320838997.2U Active CN219283377U (en) | 2023-04-06 | 2023-04-06 | Heat exchanger and water heater comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219283377U (en) |
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2023
- 2023-04-06 CN CN202320838997.2U patent/CN219283377U/en active Active
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