CN217210510U - Heat exchange device and heat exchange fins thereof - Google Patents
Heat exchange device and heat exchange fins thereof Download PDFInfo
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- CN217210510U CN217210510U CN202123055466.6U CN202123055466U CN217210510U CN 217210510 U CN217210510 U CN 217210510U CN 202123055466 U CN202123055466 U CN 202123055466U CN 217210510 U CN217210510 U CN 217210510U
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The application relates to a heat exchange device and heat exchange fins thereof. A heat exchange fin comprising: the substrate is divided into an air inlet end and an air outlet end according to the flowing direction of the air flow at the preassembly position; at least two rows of heat exchange tube mounting hole groups are arranged along the first direction, and each heat exchange tube mounting hole group comprises at least two heat exchange tube mounting holes distributed on the substrate at intervals along the second direction; the at least two groups of first spoiler groups correspond to the at least two heat exchange tube mounting holes in the Nth row of heat exchange tube mounting hole group one by one, and the first spoiler groups are positioned on the upstream side of the (N + 1) th row of heat exchange tube mounting hole group; wherein, each first spoiler group includes two first spoiler pieces that extend around in the heat exchange tube mounting hole that corresponds and along the thickness direction of substrate, and these two first spoiler pieces use the first straight line through the center of the heat exchange tube mounting hole that corresponds to be the benchmark and be the symmetric distribution. The heat exchange fin can effectively improve the heat exchange efficiency.
Description
Technical Field
The application relates to the technical field of heat exchange, in particular to a heat exchange device and heat exchange fins thereof.
Background
Traditional gas heater generally adopts finned heat exchanger to carry out the heat transfer, is equipped with a plurality of heat exchange tube mounting holes that are used for installing the heat exchange tube on finned heat exchanger's the fin, and the flue gas passes through the fin to carry out the heat transfer with the heat exchange tube on the heat exchange tube mounting hole, this finned heat exchanger has the problem that the flue gas is difficult to gather together, leads to the contact time of heat exchange tube on flue gas and the heat exchange tube mounting hole shorter, and heat exchange efficiency is lower.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a heat transfer device and heat transfer fin to the problem that the flue gas is difficult to gather up that exists to traditional fin heat exchanger.
According to an aspect of the present application, there is provided a heat exchange fin including:
the substrate is divided into an air inlet end and an air outlet end according to the flowing direction of air flow at the preassembly position;
at least two rows of heat exchange tube mounting hole groups are arranged along a first direction, and each heat exchange tube mounting hole group comprises at least two heat exchange tube mounting holes distributed on the substrate at intervals along a second direction; two adjacent heat exchange tube mounting holes in two adjacent rows of heat exchange tube mounting hole groups are arranged in a staggered mode in the second direction; and
at least two groups of first spoiler groups, which correspond to at least two heat exchange tube mounting holes in the heat exchange tube mounting hole group in the Nth row one by one, and are positioned at the upstream side of the heat exchange tube mounting hole group in the (N + 1) th row;
each first spoiler group comprises two first spoiler components which surround the corresponding heat exchange tube mounting holes and extend along the thickness direction of the substrate, and the two first spoiler components are symmetrically distributed by taking a first straight line passing through the centers of the corresponding heat exchange tube mounting holes as a reference;
the first line is parallel to the first direction;
the first direction is from the air inlet end to the air outlet end, and the second direction and the first direction are perpendicular to each other and are parallel to the substrate.
In one embodiment, the first spoiler is configured to stamp-form a hollow arc-shaped bulge in a thickness direction of the substrate.
In one embodiment, the radius of the first spoiler is R;
the radius of the heat exchange tube mounting hole is r;
wherein, R is l R, l is 1.2-1.5.
In one embodiment, two second spoilers extending in the thickness direction of the substrate are arranged on the substrate;
the (N + 1) th row of heat exchange tube mounting hole group comprises M heat exchange tube mounting holes, and the (N) th row of heat exchange tube mounting hole group comprises M +1 heat exchange tube mounting holes;
the two second turbulence members are positioned on two sides of the heat exchange tube mounting hole group in the (N + 1) th row;
the second spoiler has a first end point and a second end point opposite the first end point;
a straight line passing through the first end point and the second end point is a first virtual straight line;
a connecting line between the center of the heat exchange tube mounting hole adjacent to the second spoiler in the (N + 1) th row of heat exchange tube mounting hole group and the center of the heat exchange tube mounting hole adjacent to the same second spoiler in the nth row of heat exchange tube mounting hole group is a second virtual straight line;
the first virtual straight line is parallel to the adjacent second virtual straight line or the included angle between the first virtual straight line and the adjacent second virtual straight line is 0-15 degrees.
In one embodiment, the air inlet end of the base plate is provided with a U-shaped notch along the first direction, and the U-shaped notch is positioned between two adjacent heat exchange tube mounting holes in the heat exchange tube mounting hole group close to the air inlet end;
two sides of the inverted V-shaped notch along the second direction are respectively provided with a first turbulence flanging;
the first turbulent flow flanging is provided with a first flanging end and a second flanging end, wherein the second flanging end is positioned on the upstream side of the first flanging end;
the distance between the first flanging ends of the first turbulence flanging on the two sides is b;
the distance between the second flanging ends of the first turbulent flow flanging on the two sides is a;
and a > b.
In one embodiment, the periphery of the heat exchange tube mounting hole is provided with a hole flanging extending along the thickness direction of the substrate, and the hole flanging is provided with a plurality of positioning flanges annularly arranged around the center of the corresponding heat exchange tube mounting hole (120);
extension lines of connecting lines of second flanging ends of the first turbulent flow flanging on the two sides are intersected with the adjacent positioning flanges.
In one embodiment, the gas outlet end of the substrate is provided with a V-shaped notch;
the V-shaped notch is positioned between two adjacent heat exchange tube mounting holes in the heat exchange tube mounting hole group close to the air outlet end;
and second turbulence flanges are respectively arranged on the two sides of the V-shaped notch along the second direction.
In one embodiment, the distance between the upstream ends of the second turbulence flanges at two sides is c;
the included angle between the second turbulent flow flanges on the two sides is e;
wherein c is 0.2-0.4 times of the diameter of the heat exchange tube mounting hole;
e is 80-90 degrees.
In one embodiment, the base plate is provided with a turbulence protrusion group which corresponds to the heat exchange tube mounting holes in the heat exchange tube mounting hole group close to the air inlet end one by one;
each turbulent flow protrusion group comprises at least two turbulent flow protrusions which are symmetrically distributed on two sides of the corresponding heat exchange tube mounting hole along the second direction;
the turbulence protrusion is positioned on the upstream side of a connecting line of the centers of two adjacent heat exchange tube mounting holes in the heat exchange tube mounting hole group.
According to another aspect of the present application, there is provided a heat exchange device comprising:
the heat exchange fin group comprises a plurality of heat exchange fins arranged side by side; and
the heat exchange tube set comprises a plurality of heat exchange tubes, and the heat exchange tubes penetrate through the corresponding heat exchange tube mounting holes of the heat exchange fins so as to be connected to the heat exchange fins.
Above-mentioned heat transfer device and heat exchange fin thereof, when this heat exchange fin uses, the flue gas of high temperature is from bottom to top through the base plate, can pass through the heat exchange tube mounting hole on the heat exchange tube mounting hole in the heat exchange tube mounting hole group of Nth line, under the water conservancy diversion effect of two first vortex spares of two symmetric distributions in this heat exchange tube mounting hole both sides, this part flue gas can be gathered together towards the heat exchange tube mounting hole that corresponds, help increasing with the flue gas volume of the heat exchange tube contact on the heat exchange tube mounting hole in the heat exchange tube mounting hole group of Nth line, improve unit area's heat transfer capacity, furthermore, first vortex spare can also force the flue gas to flow around the heat exchange tube installation in the heat exchange tube mounting hole group of Nth line, increase the heat exchange time of the heat exchange tube on the heat exchange tube mounting hole in flue gas and the heat exchange tube mounting hole group of Nth line, can effectively improve heat exchange efficiency.
Drawings
FIG. 1 shows a schematic structural view of a heat exchanger fin according to an embodiment of the present application;
FIG. 2 illustrates a front view of a heat exchanger fin in an embodiment of the present application;
fig. 3 shows a schematic structural diagram of a heat exchange fin in another embodiment of the present application.
In the figure: 10. heat exchange fins; 110. a substrate; 111. an air inlet end; 112. an air outlet end; 120. a heat exchange tube mounting hole; 121. flanging the hole; 122. a positioning flange; 123. a through hole; 130. a first spoiler; 131. a first air flow passage; 140. a second spoiler; 1401. a first endpoint; 1402. a second endpoint; 141. a second air flow channel; 150. a first burbling flange; 1501. a first flanging end; 1502. a second flanging end; 151. a notch shaped like a Chinese character 'ji'; 152. a third air flow channel; 161. a V-shaped cut; 160. a second burbling flange; 1601. the windward side; 162. a fourth airflow path; 170. a smoke blocking column; 180. a turbulent flow bulge; 190. burbling and hole flanging; 191. and (5) reinforcing hole flanging.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.
Fig. 1 shows a schematic structural diagram of a heat exchange fin 10 in an embodiment of the present application.
Referring to fig. 1 in combination with fig. 2, a heat exchange fin 10 provided in an embodiment of the present application includes a base plate 110, at least two rows of heat exchange tube mounting hole sets arranged along a first direction, and at least two first spoiler sets.
Each heat exchange tube mounting hole group includes at least two heat exchange tube mounting holes 120 spaced apart on the base plate 110 along the second direction. One heat exchange tube may be installed at each heat exchange tube installation hole 120 such that the heat exchange tube is connected to the heat exchange fin 10 while passing through the corresponding heat exchange tube installation hole 120. The substrate 110 is divided into an air inlet end 111 and an air outlet end 112 according to the flowing direction of the air flow at the pre-mounting position, the first direction is a direction from the air inlet end 111 to the air outlet end 112, and the second direction is perpendicular to the first direction and parallel to the substrate 110, specifically, as shown in fig. 1, the first direction is an up-down direction, and the second direction is a left-right direction.
Two adjacent heat exchange tube mounting holes 120 in two adjacent rows of heat exchange tube mounting hole groups are arranged in a staggered manner in the second direction, so that the whole structure of the heat exchange fin 10 is more compact, if a plurality of heat exchange tubes are arranged on the plurality of heat exchange tube mounting holes 120 in a one-to-one correspondence manner, a plurality of heat exchange tubes can be arranged on the heat exchange fin 10, and correspondingly, the arrangement of the plurality of heat exchange tubes is also more compact, and the air flow flowing from bottom to top is favorably enabled to flow along the tube walls of the heat exchange tubes on the heat exchange tube mounting holes 120.
At least two sets of first spoiler group and two at least heat exchange tube mounting holes 120 one-to-one in the N row of heat exchange tube mounting hole group, and first spoiler group is located the upstream side of the (N + 1) th row of heat exchange tube mounting hole group. It can be understood that the Nth row of heat exchange tube mounting hole group is positioned at the upstream side of the Nth row of heat exchange tube mounting hole group, and the airflow flowing from bottom to top can firstly pass through the Nth row of heat exchange tube mounting hole group and then pass through the (N + 1) th row of heat exchange tube mounting hole group.
N is a natural number, and N can be 1, 2, 3 or 4, and the like. Specifically, in the embodiment shown in fig. 1, N is 1, that is, from bottom to top, the heat exchange tube mounting hole group in the 1 st row is located on the upstream side of the heat exchange tube mounting hole group in the 2 nd row.
Each first spoiler group includes two first spoilers 130 surrounding the corresponding heat exchange tube mounting hole 120 and extending in the thickness direction of the base plate 110, and the two first spoilers 130 are symmetrically distributed with reference to a first straight line passing through the center of the corresponding heat exchange tube mounting hole 120, wherein the first straight line is parallel to the first direction. It can be understood that, because the first spoiler 130 surrounds the corresponding heat exchange tube mounting hole 120, a first air flow channel 131 guiding the air flow to flow along the first direction is defined between the first spoiler 130 and the adjacent heat exchange tube mounting hole 120, the first air flow channel 131 has an air inlet and an air outlet located at the downstream side of the air inlet, and the size of the air inlet is larger than that of the air outlet, and the air flow passing through the nth row of heat exchange tube mounting hole group can be gathered towards the first air flow channel 131 in the process of flowing towards the N +1 th row of heat exchange tube mounting hole group, so that the air flow is gathered in the first air flow channel 131 and can exchange heat with the heat exchange tube on the corresponding heat exchange tube mounting hole 120.
When the heat exchange fin 10 is used, a first heat exchange fluid passing through the heat exchange fin 10 exchanges heat with a second heat exchange fluid passing through the heat exchange tube. Specifically, the first heat exchange fluid is high-temperature flue gas, and the second heat exchange fluid is cold water. The high-temperature flue gas passes through the substrate 110 from bottom to top and can pass through the heat exchange tubes in the heat exchange tube mounting holes 120 in the nth heat exchange tube mounting hole group, and under the flow guiding effect of the two first flow disturbing pieces 130 symmetrically distributed on two sides of the heat exchange tube mounting holes 120, the flue gas can be gathered towards the corresponding heat exchange tube mounting holes 120, so that the increase of the flue gas amount in contact with the heat exchange tubes in the heat exchange tube mounting holes 120 in the nth heat exchange tube mounting hole group is facilitated, the heat exchange amount per unit area is improved, in addition, the first flow disturbing pieces 130 can also force the flue gas to flow around the heat exchange tube mounting holes 120 in the nth heat exchange tube mounting hole group, the heat exchange time of the flue gas and the heat exchange tubes in the heat exchange tube mounting holes 120 in the nth heat exchange tube mounting hole group is prolonged, and the heat exchange efficiency can be effectively improved.
In some embodiments of the present application, optionally, the first spoiler 130 is configured to stamp-form a hollow arc-shaped bulge in the thickness direction of the base plate 110. By utilizing the first spoiler 130, the contact area between the first spoiler 130 and the corresponding heat exchange tube mounting hole 120 and the contact area between the heat exchange fins 10 can be increased, the amount of smoke gathered to the corresponding heat exchange tube mounting hole 120 can be further increased, and the improvement of the heat exchange efficiency is facilitated.
In some embodiments of the present application, optionally, the radius of the first spoiler 130 is R, and the radius of the heat exchange pipe mounting hole 120 is R, wherein R ═ R, l ═ 1.2-1.5. The value of the radius of the first spoiler 130 is in a proper range, the effect that the flue gas is drawn close to the corresponding heat exchange tube is better, and the heat exchange effect can be improved.
If the radius of the first spoiler 130 is too small, the amount of the collected smoke between the first spoiler 130 and the corresponding heat exchange tube mounting hole 120 is insufficient, the improvement effect of the heat efficiency is not obvious, and a narrow first air flow channel 131 is formed between the two first spoiler 130 and the corresponding heat exchange tube mounting hole 120, which may cause the problems of combustion noise and unsmooth smoke discharge. If the radius of the first spoiler 130 is too large, the effect of the smoke approaching the heat exchange tube is not good, so that the smoke is discharged without exchanging heat with the heat exchange tube, and the heat exchange effect is reduced. Therefore, the radius of the first spoiler 130 should be selected within a suitable range, and specifically, when the radius of the first spoiler 130 is R1.2 to 1.5R, the setting range is relatively reasonable.
In some embodiments of the present application, optionally, two second spoiler components 140 extending along the thickness direction of the substrate 110 are disposed on the substrate 110, the N +1 th row of heat exchange tube mounting hole groups includes M heat exchange tube mounting holes 120, the N +1 th row of heat exchange tube mounting hole groups includes M +1 heat exchange tube mounting holes 120, the two second spoiler components 140 are disposed at two sides of the N +1 th row of heat exchange tube mounting hole groups, a connection line between a center of a heat exchange tube mounting hole 120 adjacent to a second spoiler component 140 in the N +1 th row of heat exchange tube mounting hole groups and a center of a heat exchange tube mounting hole 120 adjacent to the same second spoiler component 140 in the N +1 th row of heat exchange tube mounting hole groups is a second virtual straight line L 2 . Then, the second virtual straight line L 2 And is arranged at an acute angle with respect to a line connecting centers of the adjacent two heat exchange pipe mounting holes 120.
The second spoiler 140 has a first end 1401 and a second end 1402 opposite to the first end 1401, and a straight line passing through the first end 1401 and the second end 1402 is a first virtual straight line L 1 First virtualThe straight line is parallel to the adjacent second virtual straight line L 2 Or a first virtual straight line L 1 Adjacent second virtual straight line L 2 The included angle between the two is 0 to 15 degrees. As can be seen, the first virtual straight line L 1 Parallel or nearly parallel to the adjacent second virtual straight line L 2 . It can also be understood that a connection line between the first end point and the second end point of the second spoiler 140 is parallel or tends to be parallel to a connection line between centers of two heat exchange tube mounting holes 120 adjacent to the second spoiler 140, so that a second air flow channel 141 gradually converging along the first direction can be defined between the second spoiler 140 and the heat exchange tube mounting holes 120 in the (N + 1) th row of heat exchange tube mounting hole group, and air flow is also favorably gathered in the second air flow channel 141, so that the contact time between the flue gas and the heat exchange tubes on the heat exchange tube mounting holes 120 in the (N + 1) th row of heat exchange tube mounting hole group is improved, and the heat exchange effect of the heat exchange fin 10 can be effectively improved.
Alternatively, M is a natural number, and M may be 1, 2, 3, or 4. Specifically, in the embodiment shown in fig. 1, N is 1 and M is 2, that is, the heat exchange tube mounting hole group in the 1 st row includes 3 heat exchange tube mounting holes 120, and the heat exchange tube mounting hole group in the 2 nd row includes 1 heat exchange tube mounting hole 120.
Optionally, the second spoiler 140 is configured to be punched along the thickness direction of the base plate 110 to form a hollow arc-shaped bulging portion, the structure of the second spoiler 140 is similar to that of the first spoiler 130, and likewise, the contact area between the flue gas between the second spoiler 140 and the heat exchange tube mounting hole 120 in the (N + 1) th row of heat exchange tube mounting hole group and the corresponding heat exchange tube is increased, so that the heat exchange effect of the heat exchange fin 10 can be improved.
In some embodiments of the present application, optionally, the air inlet end 111 of the base plate 110 is provided with a few-shaped notches 151 along a first direction, the few-shaped notches 151 are located between two adjacent heat exchange tube mounting holes 120 in the heat exchange tube mounting hole group near the air inlet end 111, and two sides of the few-shaped notches 151 along a second direction are respectively provided with the first turbulence flanges 150. The first spoiler flanges 150 have first flanged ends 1501 and second flanged ends 1502 located on the upstream side of the first flanged ends 1501, the distance between the first flanged ends 1501 of the first spoiler flanges 150 on both sides is b, the distance between the second flanged ends 1502 of the first spoiler flanges 150 on both sides is a, and a is greater than b.
It will be appreciated that the two first turbulating conduits 150 define therebetween a third flow passage 152 that directs the flow in the first direction and that gradually converges. When high-temperature flue gas passes through the third airflow channel 152, the high-temperature flue gas is gathered and gathered in the middle of the third airflow channel 152, and then exchanges heat with the heat exchange tubes on the heat exchange tube mounting holes 120 in the heat exchange tube mounting hole group close to the air inlet end 111, so that the heat exchange amount of the flue gas and the heat exchange tubes can be effectively increased; on the other hand, after the flue gas passes through the gradually converging third airflow channel 152, the flow velocity is increased to some extent, which is beneficial to improving the convection heat transfer coefficient of the flue gas and enhancing the heat transfer effect.
Alternatively, a is larger than the diameter D of the heat exchange pipe mounting hole 120. b ═ h ═ a, where h ═ 0.6 to 0.8.
If the value of a is too small, the amount of the collected flue gas is insufficient, and the heat exchange effect is reduced. If the value of a is too large, the flue gas can leave the heat exchange tube before exchanging heat with the heat exchange tube. Therefore, the value of a should be selected within a suitable range, and preferably, the value of a is greater than the diameter D of the heat exchange tube mounting hole 120.
Similarly, the value of b should also be set within a reasonable range, if the value of b is too large, the smoke gathering effect is not good, and the flow rate increase is not obvious; if the value of b is too small, the smoke extrusion is serious, the smoke resistance is too large, the smoke discharge is not smooth, and the combustion condition is poor. The value of b should be selected within a suitable range, preferably, b ═ h ×, a, where h is 0.6 to 0.8.
In some embodiments of the present application, optionally, the periphery of the heat exchange tube mounting hole 120 is provided with hole flanges 121 extending along the thickness direction of the substrate 110, and each hole flange 121 extends around the corresponding heat exchange tube mounting hole 120, so that a corresponding heat exchange tube is conveniently mounted on the heat exchange tube mounting hole 120, the heat exchange tube is favorably in close contact with the corresponding hole flange 121, and the heat exchange effect can be enhanced.
The hole flanges 121 are provided with a plurality of positioning flanges 122 annularly arranged around the center of the corresponding heat exchange tube mounting hole 120, and extension lines of connection lines of the second flanging ends 15021502 of the first turbulence flanges 150 on both sides intersect with the adjacent positioning flanges 122. It can be understood that, compared with the air inlet end 111, the second turnup end 15021502 of the first spoiler turnup 150 is closer to the positioning flange 122 adjacent thereto, so that the second turnup end 15021502 of the first spoiler turnup 150 is prevented from being too close to the high temperature region at the air inlet end 111 to affect the service life of the heat exchange fin 10.
Optionally, a through hole 123 is formed in the upstream side of each heat exchange tube mounting hole 120, and the through hole 123 can be used for penetrating a welding rod during manufacturing, and can reduce the material of the heat exchange fin 10, reduce the temperature of the area where the through hole 123 is located, avoid local high temperature in the area where the through hole 123 is located, and facilitate improvement of the material utilization rate and the service life of the heat exchange fin 10.
Optionally, three positioning flanges 122 are disposed on the hole flanging 121 of each heat exchange tube mounting hole 120, the three positioning flanges 122 are uniformly arranged around the center of the corresponding heat exchange tube mounting hole 120 in a circumferential manner, and a straight line passing through the center of the corresponding heat exchange tube mounting hole 120 and parallel to the first direction intersects with one of the positioning flanges 122.
In some embodiments of the present application, optionally, the air outlet end 112 of the base plate 110 is provided with a V-shaped notch 161, the V-shaped notch 161 is located between two adjacent heat exchange tube mounting holes 120 in the heat exchange tube mounting hole group close to the air outlet end 112, and two sides of the V-shaped notch 161 along the second direction are respectively provided with the second turbulence flanges 160.
It can be understood that, because the two second spoiler flanges 160 are respectively disposed on two sides of the V-shaped notch 161 along the second direction, and the V-shaped notch 161 is located between the two adjacent heat exchange tube mounting holes 120, then, a fourth airflow channel 162 for guiding airflow to flow along the first direction is defined between each second spoiler flange 160 and the adjacent heat exchange tube mounting hole 120, and the size of the fourth airflow channel 162 is gradually reduced along the first direction, so that the flow velocity of the flue gas passing through the fourth airflow channel 162 is increased, which is beneficial to maintaining a relatively high convection heat transfer coefficient, and further improves the heat exchange efficiency. In addition, second vortex turn-ups 160 has the windward face 1601 who faces the air current for the flue gas can at least partially surround in the heat exchange tube mounting hole 120 adjacent with this second vortex turn-ups 160, and can carry out the heat transfer with the heat exchange tube on this heat exchange tube mounting hole 120, avoids accomplishing outside the direct discharge heat exchange fin 10 of flue gas of first heat transfer, reaches flue gas reutilization's effect, can improve heat exchange fin 10's heat transfer effect.
In some embodiments of the present application, optionally, the distance between the upstream ends of the second spoiler flanges 160 on both sides is c, and the included angle between the second spoiler flanges (160) on both sides is e. Wherein c is 0.2-0.4 times the diameter of the heat exchange tube mounting hole 120, and e is 80-90 degrees.
Further, if the value of c is too small, the smoke at the heat exchange tube mounting hole 120 adjacent to the second turbulent flow flanging 160 is blocked too much, and the smoke is not smooth, and if the value of c is too large, the smoke at the heat exchange tube mounting hole 120 adjacent to the second turbulent flow flanging 160 is directly discharged out of the heat exchange fin 10, the smoke quantity guided to the periphery of the heat exchange tube mounting hole 120 adjacent to the second turbulent flow flanging 160 is reduced, and the secondary utilization effect of the smoke cannot be achieved. Therefore, the value of c should be selected within a proper range, and optionally, c is 0.2 to 0.4 times the diameter of the heat exchange tube mounting hole 120.
Likewise, the size of e should not be too large or too small. Optionally, e is 80-90 degrees.
Optionally, a smoke blocking column 170 is arranged between the second turbulence flanging 160 and the adjacent heat exchange tube mounting hole 120, the smoke blocking column 170 is located between the fourth airflow channels 162 on the two sides, the high-temperature smoke can flow through the smoke blocking column 170 and be divided into the fourth airflow channels 162 on the two sides, so that the smoke is prevented from being directly discharged, the smoke staying in the fourth airflow channels 162 can be in full contact with the heat exchange tubes on the adjacent heat exchange tube mounting holes 120 to exchange heat, and the heat exchange amount of the smoke at the air outlet end 112 is increased.
Optionally, the diameter of the smoke blocking column 170 is approximately equal to c, the flow dividing effect of the smoke blocking column 170 is good, and the heat exchange efficiency of the heat exchange fin 10 can be improved.
In some embodiments of the present application, optionally, a turbulence protrusion set corresponding to the heat exchange tube mounting holes 120 in the heat exchange tube mounting hole set close to the air inlet end 111 is provided on the substrate 110. Each turbulent flow protrusion set includes at least two turbulent flow protrusions 180 symmetrically distributed on both sides of the corresponding heat exchange tube mounting hole 120 along the second direction. The turbulence protrusion 180 is located at an upstream side of a line connecting centers of two adjacent heat exchange tube mounting holes 120 in the heat exchange tube mounting hole group. At least two protruding 180 of vortex help increasing the heat transfer area and the turbulent flow region between the flue gas of the upstream side of the heat exchange tube mounting hole 120 that corresponds and this heat exchange fin 10, improve heat exchange efficiency.
In other embodiments of the present application, referring to fig. 3, the turbulence protrusions 180 are not disposed on the base plate 110, so that the production process of the heat exchange fin 10 can be simplified under the condition that the heat exchange effect of the heat exchange fin 10 meets the requirement.
Optionally, one side of each heat exchange tube mounting hole 120 in the (N + 1) th row of heat exchange tube mounting hole groups is provided with a turbulence turning hole 190, and the diameter of the turbulence turning hole 190 is smaller than the diameter D of the heat exchange tube mounting hole 120. The turbulent flow can be formed on the flue gas flowing through the heat exchange tube mounting hole 120 in the (N + 1) th row of heat exchange tube mounting hole group, the residence time of the flue gas at the heat exchange tube on the heat exchange tube mounting hole 120 in the (N + 1) th row of heat exchange tube mounting hole group is properly increased, and the heat exchange effect is improved.
Optionally, two reinforcing flanged holes 191 are formed in the substrate 110 and located at two sides of the heat exchange tube mounting hole group adjacent to the air outlet end 112, so that the material of the heat exchange fin 10 can be reduced, the strength of the heat exchange fin 10 can be improved, and cost saving is facilitated.
An embodiment of the application provides a heat exchange device, which comprises a heat exchange fin group and a heat exchange tube group. The heat exchange fin group comprises a plurality of the heat exchange fins 10 arranged side by side. The heat exchange tube group includes a plurality of heat exchange tubes, and the heat exchange tube passes through the corresponding heat exchange tube mounting hole 120 of each heat exchange fin 10 to make the heat exchange tube connect on heat exchange fin 10, the heat exchange tube can connect in proper order on a plurality of heat exchange fins 10.
The heat exchange device can be a heat exchanger, and can also be a gas water heater comprising the heat exchanger.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.
Claims (10)
1. A heat exchange fin, comprising:
a substrate (110) which is divided into an air inlet end (111) and an air outlet end (112) according to the flowing direction of the air flow at the preassembly position;
at least two rows of heat exchange tube mounting hole groups are arranged along a first direction, and each heat exchange tube mounting hole group comprises at least two heat exchange tube mounting holes (120) distributed on the substrate (110) at intervals along a second direction; two adjacent heat exchange tube mounting holes (120) in two adjacent rows of heat exchange tube mounting hole groups are arranged in a staggered manner in the second direction; and
at least two groups of first spoiler groups, which correspond to at least two heat exchange tube mounting holes (120) in the heat exchange tube mounting hole group in the Nth row one by one, and are positioned at the upstream side of the heat exchange tube mounting hole group in the (N + 1) th row;
each first spoiler group comprises two first spoiler pieces (130) which surround the corresponding heat exchange tube mounting hole (120) and extend along the thickness direction of the substrate (110), and the two first spoiler pieces (130) are symmetrically distributed by taking a first straight line passing through the center of the corresponding heat exchange tube mounting hole (120) as a reference;
the first line is parallel to the first direction;
the first direction is a direction from the gas inlet end (111) to the gas outlet end (112), and the second direction and the first direction are perpendicular to each other and are parallel to the substrate (110).
2. The heat exchange fin according to claim 1, wherein the first spoiler (130) is configured by punching a hollow arc-shaped bulge in a thickness direction of the base plate (110).
3. The heat exchange fin according to claim 2, wherein the first spoiler (130) has a radius R;
the radius of the heat exchange tube mounting hole (120) is r;
wherein, R is l R, l is 1.2-1.5.
4. The heat exchange fin according to claim 1, wherein two second turbulators (140) extending in the thickness direction of the base plate (110) are provided on the base plate (110);
the heat exchange tube mounting hole group in the (N + 1) th row comprises M heat exchange tube mounting holes (120), and the heat exchange tube mounting hole group in the (N) th row comprises M +1 heat exchange tube mounting holes (120);
the two second turbulence members (140) are positioned at two sides of the heat exchange tube mounting hole group in the (N + 1) th row;
the second spoiler (140) having a first end (1401) and a second end (1402) opposite the first end (1401);
a straight line passing through the first endpoint (1401) and the second endpoint (1402) is a first virtual straight line;
a connecting line between the center of the heat exchange tube mounting hole (120) adjacent to the second spoiler (140) in the (N + 1) th row of heat exchange tube mounting hole group and the center of the heat exchange tube mounting hole (120) adjacent to the same second spoiler (140) in the nth row of heat exchange tube mounting hole group is a second virtual straight line;
the first virtual straight line is parallel to the adjacent second virtual straight line or the included angle between the first virtual straight line and the adjacent second virtual straight line is 0-15 degrees.
5. The heat exchange fin according to claim 1, wherein the base plate (110) has an inlet end (111) opened with a zigzag-shaped notch (151) along the first direction, the zigzag-shaped notch (151) being located between adjacent two of the heat exchange tube mounting holes (120) in the heat exchange tube mounting hole group near the inlet end (111);
two sides of the inverted V-shaped notch (151) along the second direction are respectively provided with a first turbulence flanging (150);
the first turbulence flanging (150) is provided with a first flanging end (1501) and a second flanging end (1502) located on the upstream side of the first flanging end (1501);
the distance between the first turnup ends (1501) of the first disturbed flow turnup (150) on the two sides is b;
the distance between the second turnup ends (1502) of the first turbulence turnup (150) on the two sides is a;
and a > b.
6. The heat exchange fin according to claim 5, wherein the heat exchange tube mounting hole (120) is provided at a periphery thereof with a hole flange (121) extending in a thickness direction of the base plate (110), the hole flange (121) being provided with a plurality of positioning flanges (122) annularly arranged around a center of the corresponding heat exchange tube mounting hole (120);
extension lines of connecting lines of the second turnup ends (1502) of the first turbulence turnup (150) on two sides intersect with the adjacent positioning flanges (122).
7. The heat exchange fin according to claim 1, wherein the air outlet end (112) of the base plate (110) is provided with a V-shaped notch (161);
the V-shaped notch (161) is positioned between two adjacent heat exchange tube mounting holes (120) in the heat exchange tube mounting hole group close to the air outlet end (112);
and second turbulence flanges (160) are respectively arranged on two sides of the V-shaped notch (161) along the second direction.
8. The heat exchange fin according to claim 7, wherein the distance between the upstream ends of the second turbulence flanges (160) on both sides is c;
the included angle between the second turbulence flanges (160) on the two sides is e;
wherein c is 0.2 to 0.4 times the diameter of the heat exchange tube mounting hole (120);
e is 80-90 degrees.
9. The heat exchange fin as claimed in claim 1, wherein the base plate (110) is provided with a set of turbulator protrusions corresponding one-to-one to the heat exchange tube mounting holes (120) in the set of heat exchange tube mounting holes near the air inlet end (111);
each turbulent flow protrusion group comprises at least two turbulent flow protrusions (180) which are symmetrically distributed on two sides of the corresponding heat exchange tube mounting hole (120) along the second direction;
the turbulence protrusion (180) is positioned on the upstream side of a connecting line of the centers of two adjacent heat exchange tube mounting holes (120) in the heat exchange tube mounting hole group.
10. A heat exchange device, comprising:
a heat exchange fin group comprising a plurality of heat exchange fins (100) according to any one of claims 1 to 9 arranged side by side; and
the heat exchange tube set comprises a plurality of heat exchange tubes, and the heat exchange tubes penetrate through the heat exchange tube mounting holes corresponding to the heat exchange fins so as to be connected to the heat exchange fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123055466.6U CN217210510U (en) | 2021-12-07 | 2021-12-07 | Heat exchange device and heat exchange fins thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123055466.6U CN217210510U (en) | 2021-12-07 | 2021-12-07 | Heat exchange device and heat exchange fins thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217210510U true CN217210510U (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123055466.6U Active CN217210510U (en) | 2021-12-07 | 2021-12-07 | Heat exchange device and heat exchange fins thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217210510U (en) |
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2021
- 2021-12-07 CN CN202123055466.6U patent/CN217210510U/en active Active
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