CN211204438U - Heat exchange device and water heater - Google Patents
Heat exchange device and water heater Download PDFInfo
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- CN211204438U CN211204438U CN201922132615.0U CN201922132615U CN211204438U CN 211204438 U CN211204438 U CN 211204438U CN 201922132615 U CN201922132615 U CN 201922132615U CN 211204438 U CN211204438 U CN 211204438U
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- heat exchange
- condensation
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- sensible
- exchange cavity
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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 heat transfer device and water heater, heat transfer device includes: the shell is provided with a sensible heat exchange cavity, a condensation heat exchange cavity and a smoke exhaust port communicated with the condensation heat exchange cavity; the sensible heat exchanger is arranged in the sensible heat exchange cavity; the condensation heat exchanger is arranged in the condensation heat exchange cavity; and the waste heat exchange tube is embedded in the side walls of the sensible heat exchange cavity and the condensation heat exchange cavity. The heat exchange device of the utility model embeds the waste heat exchange tubes on the side walls of the sensible heat exchange cavity and the condensation heat exchange cavity, so that the heat transferred to the side wall of the shell can be absorbed and utilized by the waste heat exchange tubes, and the water flowing through the waste heat exchange tubes is heated; therefore, the utilization rate of the heat of the flue gas is improved, the surface temperature of the shell is reduced, and the heat loss is further reduced.
Description
Technical Field
The utility model relates to a heat exchange technology field, in particular to heat transfer device and water heater.
Background
The heat exchanger is a heat exchange device, which comprises an outer shell, fin heat exchanger and condensation heat exchanger, fin heat exchanger sets up in the cavity of shell, condensation heat exchanger is located fin heat exchanger's top, the burning heats in the shell cavity of fin heat exchanger below usually, through setting up the air exhauster in the top of condenser, upward movement in the shell of the flue gas that the twitch burning produced, flow into fin heat exchanger and condensation heat exchanger and carry out the heat exchange, the water that carries can cool off after condensation heat exchanger's effect and condense and become the water droplet and down drip. In the existing heat exchange equipment, partial heat of the flue gas can be transferred to the shell, so that the temperature of the shell is high, and the utilization rate of the heat is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heat transfer device aims at solving the technical problem who how to improve flue gas heat utilization rate.
In order to achieve the above object, the utility model provides a heat exchange device, include:
the shell is provided with a sensible heat exchange cavity, a condensation heat exchange cavity and a smoke exhaust port communicated with the condensation heat exchange cavity;
the sensible heat exchanger is arranged in the sensible heat exchange cavity;
the condensation heat exchanger is arranged in the condensation heat exchange cavity;
and the waste heat exchange tube is embedded in the side walls of the sensible heat exchange cavity and the condensation heat exchange cavity.
Optionally, the cross section of the waste heat exchange tube is in an oval shape.
Optionally, the smoke exhaust port is arranged at the bottom of the shell, and the sensible heat exchange cavity is arranged above the condensation heat exchange cavity.
Optionally, the casing is further provided with a combustion chamber, and the combustion chamber is arranged above the sensible heat exchange cavity.
Optionally, the sensible heat exchanger comprises a plurality of rows of sensible heat exchange tubes, and the cross section of at least one row of sensible heat exchange tubes is circular.
Optionally, the heat exchange device further comprises a heat insulation layer covering the outer wall of the shell.
Optionally, the thermal insulation layer is made of silicate material.
Optionally, the heat exchange device further includes a flow guide plate disposed in the condensation heat exchange cavity to form a flow passage to extend a flow path of the flue gas in the condensation heat exchange cavity.
Optionally, the housing is made of stainless steel material.
The utility model discloses still provide a water heater, including a heat transfer device, this heat transfer device includes: the shell is provided with a sensible heat exchange cavity, a condensation heat exchange cavity and a smoke exhaust port communicated with the condensation heat exchange cavity; the sensible heat exchanger is arranged in the sensible heat exchange cavity; the condensation heat exchanger is arranged in the condensation heat exchange cavity; and the waste heat exchange tube is embedded in the side walls of the sensible heat exchange cavity and the condensation heat exchange cavity.
The heat exchange device of the utility model embeds the waste heat exchange tubes on the side walls of the sensible heat exchange cavity and the condensation heat exchange cavity, so that the heat transferred to the side wall of the shell can be absorbed and utilized by the waste heat exchange tubes, and the water flowing through the waste heat exchange tubes is heated; therefore, the utilization rate of the heat of the flue gas is improved, the surface temperature of the shell is reduced, and the heat loss is further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of an embodiment of the heat exchange device of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic cross-sectional view of another embodiment of the heat exchange device of the present invention;
fig. 4 is a schematic structural view of an embodiment of the middle deflector of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
11 | Sensible |
12 | Condensation |
| 13 | |
20 | |
30 | |
| 40 | |
41 | Fixed |
411 | |
| 70 | |
50 | |
14 | |
| 60 | Waste heat exchange tube |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a heat exchange device.
In the embodiment of the present invention, as shown in fig. 1 to 4, the heat exchange device includes:
the shell 10 is provided with a sensible heat exchange cavity 11, a condensation heat exchange cavity 12 and a smoke outlet 13 communicated with the condensation heat exchange cavity 12; the sensible heat exchanger 20 is arranged in the sensible heat exchange cavity 11; the condensation heat exchanger 30 is arranged in the condensation heat exchange cavity 12; and the flow guide plate 40 is arranged in the condensation heat exchange cavity 12 to form a flow passage to prolong the flow path of the flue gas in the condensation heat exchange cavity 12.
In this embodiment, the casing 10 is further provided with an air inlet, the air inlet can be used for entering high-temperature flue gas, and can also be used for entering fuel gas, if the air inlet is used for entering high-temperature flue gas, the air inlet is directly communicated with the sensible heat exchange cavity 11. The sensible heat exchanger 20 includes a heat exchange fin and a sensible heat exchange tube, and the heat exchange fin is in contact with the sensible heat exchange tube to increase the heat exchange amount with the flue gas and transmit the heat to the sensible heat exchange tube. The sensible heat exchange pipe is used for supplying cold water to flow so that the cold water absorbs heat of the sensible heat exchange pipe to form hot water. After the sensible heat exchange cavity 11 fully exchanges heat, the high-temperature flue gas can flow to the condensation heat exchange cavity 12, and the condensation heat exchanger 30 can condense the water vapor in the flue gas into liquid water so as to release latent heat of vaporization, so that the heat in the flue gas can be further recycled, and the heat exchange efficiency is improved. The smoke outlet 13 is used for discharging the waste gas after heat exchange of the condensing heat exchanger 30, and the smoke outlet 13 is arranged far away from the sensible heat exchange cavity 11 so as to prolong the heat exchange time of the smoke and the condensing heat exchanger 30. The smoke exhaust 13 may be an opening on the smoke exhaust side of the condensation heat exchange cavity 12, or may be an opening with a sectional area smaller than that of the condensation heat exchange cavity 12, which is not limited herein.
The utility model discloses an in the embodiment, condensation heat exchanger 30 has multirow condensation heat exchange tube, and on heat transfer device's direction of height, the central axis of adjacent condensation heat exchange tube between the row does not coincide mutually, so just forms many tortuous flue gas circulation passageways in condensation heat transfer chamber 12.
Further, in order to guide the flow path of the flue gas, at least the distance between two condensation heat exchange tubes in each row of the plurality of condensation heat exchange tubes is larger than the gap between other condensation heat exchange tubes in the same row, or further, the distance between at least two pairs of condensation heat exchange tubes in each row of the plurality of condensation heat exchange tubes is more than 1.5 times of the distance between other condensation heat exchange tubes in the same row.
The utility model discloses heat transfer device has prolonged the flow path of flue gas in condensation heat exchanger 30 through set up guide plate 40 in condensation heat transfer chamber 12 in order to form the runner to the contact time of flue gas with the condensation heat exchange tube has been prolonged, heat transfer time has been prolonged promptly, makes the heat of flue gas can be by abundant heat transfer, has improved the utilization ratio of flue gas, thereby has improved heat transfer device's heat exchange efficiency.
In an embodiment, as shown in fig. 1, 2 and 4, the condensing heat exchanger 30 includes a plurality of condensing heat exchange tubes, a fixing protrusion 41 is convexly disposed on a plate surface of the flow guide plate 40, and the fixing protrusion 41 is clamped in a gap between two adjacent condensing heat exchange tubes. In this embodiment, the guide plate 40 has a guide surface and an installation surface opposite to each other, the guide surface is used for changing the direction of the flue gas, and the fixing protrusion 41 is convexly arranged on the installation surface. The guide plate 40 extends along the arrangement direction of the heat exchange condensation tubes, a fixed gap is formed between every two adjacent condensation heat exchange tubes, and the fixing protrusion 41 is fixedly matched with the fixed gap so as to fix the guide plate 40 in the condensation heat exchange cavity 12. The fixed gap extends along the length of the condensation heat exchange tube and is arranged at intervals along the arrangement direction of the plurality of condensation heat exchange tubes. The number of the fixing protrusions 41 is plural, and the plurality of fixing protrusions 41 are arranged at intervals along the length direction and the arrangement direction of the condensation heat exchange pipe to increase the fixing position and the fixing area.
Specifically, as shown in fig. 2, a fixing rib 411 is protruded from a peripheral wall of one end of the fixing protrusion 41 away from the flow guide plate 40, and the fixing rib 411 abuts against the condensation heat exchange pipe. In this embodiment, the fixing rib 411 extends along the circumferential direction of the fixing protrusion 41, and after the fixing protrusion 41 is clamped in the fixing gap, one side of the fixing rib 411 facing the air deflector 40 can abut against two adjacent condensation heat exchange tubes to prevent the fixing protrusion 41 from being separated, so that the air deflector 40 is more stably installed in the condensation heat exchange cavity 12.
In practical applications, the fixing rib 411 is formed with a guide slope to guide the fixing protrusion 41 toward a gap between two adjacent condensing heat exchange tubes. In the present embodiment, the guide slope is formed on a side of the fixing rib 411 facing away from the air guide plate 40, and extends in the circumferential direction of the fixing rib 411. When the fixing protrusion 41 is engaged with the fixing gap, the condensing heat exchange tube slides along the guiding inclined plane, so that the fixing rib 411 enters the fixing gap more smoothly, and the installation process of the guide plate 40 is simpler and more convenient. It can be understood that the guide inclined plane can be arranged in an arc surface manner, so that the condensation heat exchange tube is prevented from being scratched by the fixing ribs 411, and the stability of the condensation heat exchange tube is improved. In addition, fixed muscle 411 butt in the position of condensation heat exchange tube is the cambered surface setting, also can avoid fixed muscle 411 to collide with the damage condensation heat exchange tube, further improves heat transfer device's overall stability.
In one embodiment, as shown in fig. 1 and 3, the baffle 40 is disposed adjacent the smoke exhaust 13. In this embodiment, the flue gas is more in the position latent heat content of keeping away from exhaust port 13, should fully contact the heat transfer with condensation heat exchanger 30 this moment, should reduce the factor that hinders the flue gas heat transfer promptly. When the flue gas flows to the position adjacent to the flue gas outlet 13, the latent heat content is low, and the heat exchange time of the condensing heat exchanger 30 is increased to fully utilize the heat. Therefore, by arranging the flow guide plate 40 at a position adjacent to the smoke discharge port 13, the smoke is not directly discharged from the smoke discharge port 13 due to the flow guide effect of the flow guide plate 40, but flows in the condensation heat exchange cavity 12 for a longer time, so that the latent heat energy in the smoke is fully recovered.
Specifically, as shown in fig. 1 and fig. 3, the heat exchange device further includes two flow blocking plates 50 disposed on the smoke exhaust side of the condensation heat exchange cavity 12, and the smoke exhaust port 13 is formed between the two flow blocking plates 50. In this embodiment, the casing 10 forms an opening at the smoke exhaust side of the condensation heat exchange cavity 12, and the baffle 50 is disposed at the opening to block most of the smoke from directly flowing out. The smoke outlet 13 is formed between the two spoilers 50, smoke can stay for a longer time in the condensation heat exchange cavity 12 after flowing through the spoilers 50, and the smoke can flow to the smoke outlet 13 under the action of the difference of the internal pressure and the external pressure of the shell 10, so that the heat exchange time of the smoke and the condensation heat exchanger 30 is further prolonged, and the heat exchange efficiency is improved.
In practical application, as shown in fig. 1 and 3, the smoke outlet 13 is disposed at the bottom of the casing 10, the sensible heat exchange cavity 11 is disposed above the condensation heat exchange cavity 12, and two plate surfaces of the guide plate 40 face the sensible heat exchange cavity 11 and the smoke outlet 13, respectively. In this embodiment, the flue gas and the heat exchange of the condensing heat exchanger 30 can generate water droplets, and the smoke outlet 13 is arranged at the bottom of the casing 10, so that the water droplets can flow out from the smoke outlet 13 after being accumulated, and the condensed water can be conveniently discharged. The guide plate 40 is positioned between two side walls of the condensation heat exchange cavity 12, the guide surface of the guide plate 40 faces the sensible heat exchange cavity 11, and the installation surface faces the smoke exhaust port 13. After flowing through the guide plate 40, the flue gas is divided towards both sides and continues to flow towards the spoiler 50, and then flows towards the smoke outlet 13 after flowing through the spoiler 50, so that the flue gas flows roundly in the condensation heat exchange cavity 12, the heat exchange time with the condensation heat exchanger 30 is greatly prolonged, and the heat exchange efficiency is improved.
In one embodiment, as shown in fig. 1 and 3, the casing 10 is further provided with a combustion chamber 14, and the combustion chamber 14 is arranged above the sensible heat exchange cavity 11. In the present embodiment, the combustion chamber 14 is communicated with the sensible heat exchange cavity 11, so that the high-temperature flue gas generated by combustion exchanges heat with the sensible heat exchanger 20. The air inlet of the housing 10 communicates with the combustion chamber 14 for the intake of gas and air. By integrating the combustion chamber 14, the sensible heat exchanger 20 and the condensing heat exchanger 30 into one casing 10, the structure of the heat exchange device is more compact, the occupied space is small, and the heat loss in the flowing process of the flue gas can be reduced, so that the practicability of the heat exchange device is further improved.
Specifically, as shown in fig. 1 and 3, the heat exchange device further includes a waste heat exchange pipe 60, and the waste heat exchange pipe 60 is embedded in the side walls of the sensible heat exchange cavity 11 and the condensation heat exchange cavity 12. In this embodiment, the waste heat exchanging tube 60 abuts against the inner wall surfaces of the sensible heat exchanging cavity 11 and the condensing heat exchanger 30, the waste heat exchanging tube 60 covers the sidewalls of all the sensible heat exchanging cavities 11 and the condensing heat exchanging cavity 12 from top to bottom, and fins are further disposed between the waste heat exchanging tube 60 and the sensible heat exchanging cavity 11 and the condensing heat exchanging cavity 12 to increase the heat exchanging area and improve the heat exchanging efficiency. Through embedding the waste heat exchange tube 60 on the side walls of the sensible heat exchange cavity 11 and the condensation heat exchange cavity 12, the heat transferred to the side wall of the shell 10 can be fully utilized, the heat utilization rate is improved, and the temperature of the shell 10 is reduced.
In practical application, as shown in fig. 1, the cross-sectional shape of the waste heat exchanging pipe 60 is oval. In this embodiment, the cross section of the waste heat exchanging tube 60 is oval, so that the contact area with the housing 10 can be increased, and the cross section area of the flow channel of the waste heat exchanging tube 60 can be increased on the basis of not increasing the volume of the housing 10 too much, thereby reducing the flow channel resistance and ensuring that the water flow is smoother. In addition, the pipeline can be effectively prevented from being blocked due to the structure, and the stability of the heat exchange device is improved.
In one embodiment, as shown in fig. 3, the sensible heat exchanger 20 includes a plurality of rows of sensible heat exchange tubes, and at least one row of the sensible heat exchange tubes has a circular cross-sectional shape. In this embodiment, a plurality of rows of sensible heat exchange tubes are arranged at intervals along the height direction of the sensible heat exchange cavity 11, and a plurality of sensible heat exchange tubes in each row are arranged at intervals along the width direction of the sensible heat exchange cavity 11. The cross section of at least one row of sensible heat exchange tubes is circular, so that the flow area of the circular tubes can be reduced, the flow is reduced, the water temperature is increased, namely the local water temperature of the sensible heat exchange cavity 11 is increased, the effect of uniform water temperature is achieved, and the vaporization phenomenon of high-temperature flue gas in the sensible heat exchange cavity 11 is improved.
Specifically, as shown in fig. 1 and 3, the heat exchange device further includes a heat insulation layer 70 covering the outer wall of the casing 10. In this embodiment, the heat insulation layer 70 is used to reduce the heat exchange between the housing 10 and the air, and greatly reduce the heat dissipation from the outer surface of the heat exchange device to the outside, thereby reducing the heat loss. In practical application, the heat insulation layer 70 is made of silicate material, so as to simultaneously play a role in noise isolation, and further improve the practicability of the heat exchange device. In addition, the shell 10 is made of stainless steel material, so as to improve the corrosion resistance of the shell 10, reduce the corrosion of the shell 10 by the condensed water generated by the condensing heat exchanger 30, and improve the stability of the shell 10.
The utility model discloses still provide a water heater, this water heater include a heat transfer device, and this heat transfer device's concrete structure refers to above-mentioned embodiment, because this water heater has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary detail here.
The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. A heat exchange device, comprising:
the shell is provided with a sensible heat exchange cavity, a condensation heat exchange cavity and a smoke exhaust port communicated with the condensation heat exchange cavity;
the sensible heat exchanger is arranged in the sensible heat exchange cavity;
the condensation heat exchanger is arranged in the condensation heat exchange cavity;
and the waste heat exchange tube is embedded in the side walls of the sensible heat exchange cavity and the condensation heat exchange cavity.
2. The heat exchange device of claim 1, wherein the waste heat exchange tube is oval in cross-sectional shape.
3. The heat exchange device of claim 1, wherein the smoke exhaust is disposed at the bottom of the shell, and the sensible heat exchange cavity is disposed above the condensation heat exchange cavity.
4. The heat exchange device of claim 3 wherein the housing is further provided with a combustion chamber, the combustion chamber being located above the sensible heat exchange chamber.
5. The heat exchange apparatus of claim 1 wherein the sensible heat exchanger comprises a plurality of rows of sensible heat exchange tubes, at least one row of the sensible heat exchange tubes having a circular cross-sectional shape.
6. The heat exchange device of claim 1 further comprising an insulation layer covering the outer wall of the shell.
7. The heat exchange device of claim 6 wherein the insulation layer is made of a silicate material.
8. The heat exchange device of claim 1, further comprising a flow deflector disposed in the condensing heat exchange chamber to form a flow passage to extend a flow path of the flue gas in the condensing heat exchange chamber.
9. The heat exchange device of claim 1 wherein the housing is made of a stainless steel material.
10. A water heater comprising a heat exchange device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132615.0U CN211204438U (en) | 2019-11-29 | 2019-11-29 | Heat exchange device and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132615.0U CN211204438U (en) | 2019-11-29 | 2019-11-29 | Heat exchange device and water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211204438U true CN211204438U (en) | 2020-08-07 |
Family
ID=71880202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922132615.0U Active CN211204438U (en) | 2019-11-29 | 2019-11-29 | Heat exchange device and water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211204438U (en) |
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2019
- 2019-11-29 CN CN201922132615.0U patent/CN211204438U/en active Active
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