CN113865383A - Plate-fin air cooler structure and air cooler - Google Patents
Plate-fin air cooler structure and air cooler Download PDFInfo
- Publication number
- CN113865383A CN113865383A CN202010619998.9A CN202010619998A CN113865383A CN 113865383 A CN113865383 A CN 113865383A CN 202010619998 A CN202010619998 A CN 202010619998A CN 113865383 A CN113865383 A CN 113865383A
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- plate
- air cooler
- fins
- bundles
- flow channel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to the technical field of air coolers, in particular to a plate-fin air cooler structure and an air cooler. A plate-fin air cooler structure comprises a plurality of plate bundles, wherein the plate bundles are stacked, adjacent plate bundles are supported by a plurality of first fins, and gas flow channels are formed among the first fins; each plate bundle comprises a shell, a water inlet and a water outlet are respectively arranged on two opposite sides of the shell, a plurality of second fins are arranged in the shell, and a liquid flow channel is formed between the water inlet and the water outlet and among the plurality of second fins; the direction of gas flow in the gas flow channel is opposite to the direction of liquid flow in the liquid flow channel. The invention optimizes the gas-liquid alternation of the prior air cooler into pure countercurrent, thereby improving the heat exchange efficiency of the invention; the collision flow of the existing air cooler is changed into friction flow through structural optimization, so that the flow resistance of the air side is reduced.
Description
Technical Field
The invention relates to the technical field of air coolers, in particular to a plate-fin air cooler structure and an air cooler.
Background
The energy demand of China is rigidly increased, the consumption level is at the forefront of the world and is still rapidly increased, the energy is continuously reduced, and the problem of energy emission is increasingly highlighted.
The radiator is widely applied to the fields of fossil, petroleum, metallurgy, electric power and the like, the performance of the radiator has obvious value for improving the energy efficiency, researchers at home and abroad attach great importance to the heat exchange strengthening technology, the heat exchange efficiency is improved, the flow resistance is reduced, and the environmental adaptability is improved by continuously developing novel radiator structures, optimizing design parameters and selecting special materials, so that the heat exchange capacity is improved, and the competitive level of equipment in the industry is improved.
Air coolers in the prior art include gas-liquid plate-fin air coolers, but they have the following problems:
1. the windward area is large, so that the transverse cross-sectional area of the gas-liquid plate-fin air cooler is too large, the equipment volume is large, and a large space needs to be provided for installation;
2. the existing air cooler realizes the heat exchange effect by mutually staggering the flowing directions of gas and liquid during heat exchange, but the heat exchange mode has lower heat dissipation efficiency.
Disclosure of Invention
The invention aims to: in order to solve the problems in the prior art, the invention provides a plate-fin air cooler structure and an air cooler.
In order to solve the problems in the prior art, the invention adopts the following technical scheme:
a plate-fin air cooler structure comprises a plurality of plate bundles, wherein the plate bundles are stacked, adjacent plate bundles are supported by a plurality of first fins, and gas flow channels are formed among the first fins;
each plate bundle comprises a shell, a water inlet and a water outlet are respectively arranged on two opposite sides of the shell, a plurality of second fins are arranged in the shell, and a liquid flow channel is formed between the water inlet and the water outlet and among the second fins;
the direction of gas flow in the gas flow channel is opposite to the direction of liquid flow in the liquid flow channel.
As an improvement of the technical scheme of the plate-fin air cooler structure, the plate bundles are horizontally arranged and are parallel to each other, and the plate bundles are square plate bundles.
As an improvement of the technical scheme of the plate-fin air cooler structure, the first fins and the second fins are arranged along the length direction of the plate bundle.
As an improvement of the technical scheme of the plate-fin air cooler structure, in the plurality of first fins, the distances between the adjacent first fins are equal; in the plurality of second fins, the adjacent second fins are equally spaced
As an improvement of the technical scheme of the plate-fin air cooler structure, each plate bundle comprises an upper plate, a lower plate and four side plates, the upper plate, the lower plate and the four side plates form a closed shell, and the water inlet and the water outlet are respectively arranged on the two opposite side plates.
As an improvement of the technical scheme of the plate-fin air cooler structure, the plate-fin air cooler structure further comprises a first seal head, a second seal head, a water inlet pipe and a water outlet pipe, wherein the water inlets of the plate bundles are connected with the first seal head, and the first seal head is connected with the water inlet pipe; the water outlets of the plate bundles are connected with the second seal head, and the second seal head is connected with the water outlet pipe.
As an improvement of the technical scheme of the plate-fin air cooler structure, the first seal head is arranged at the front end of the plate bundle, the second seal head is arranged at the rear end of the plate bundle, and a liquid flow channel from front to back is formed between the first seal head and the second seal head; the gas flow channel is a back-to-front gas flow channel.
An air cooler, includes the air cooler main part, still includes foretell plate-fin air cooler structure, plate-fin air cooler structure arranges in the air cooler main part.
The invention has the beneficial effects that:
1. the invention optimizes the gas-liquid alternation of the prior air cooler into pure countercurrent, thereby improving the heat exchange efficiency of the invention; the collision flow of the existing air cooler is changed into friction flow through structure optimization, so that the flow resistance of the air side is reduced, and the problem of low heat dissipation efficiency of a mode of realizing a heat exchange effect by mutually staggering the flowing directions of gas and liquid in the prior art is solved;
2. the area of the air inlet is reduced, and the length of the gas heat exchange path is increased under the action of the gas flow channel, so that the air cooler has the advantage of small cross-sectional area compared with the existing air cooler, and the problems that the equipment in the prior art is large in size and needs to provide a large space for installation are solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the plate bundle of the present invention.
Description of reference numerals: 1-plate bundle; 2-a first fin; 3-a water inlet; 4-a first end enclosure; 5-a second end enclosure; 6-upper plate; 7-side plate; 8-water inlet pipe; 9-water outlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of embodiments of the present invention, and not all embodiments.
As shown in fig. 1 and 2, a plate-fin air cooler structure comprises a plurality of plate bundles 1, wherein the plate bundles 1 are stacked, the plate bundles 1 are parallel to each other, adjacent plate bundles 1 are supported by a plurality of first fins 2, and gas flow channels are formed among the first fins 2; each plate bundle 1 comprises a shell, a water inlet 3 and a water outlet are respectively arranged on two opposite sides of the shell, a plurality of second fins are arranged in the shell, a liquid flow channel is formed between the water inlet 3 and the water outlet and among the plurality of second fins; the gas flow path and the liquid flow path are in opposite directions.
In the invention, a plurality of plate bundles 1 are supported by a plurality of fins, and a gas flow channel is formed among a plurality of first fins 2; liquid flow channels are formed between the plurality of second fins in the plate bundle 1, and the direction in which the gas flows in the gas flow channels is opposite to the direction in which the liquid flows in the liquid flow channels.
In detail, in the air cooler with the gas-liquid plate-fin type in the prior art, the heat exchange effect is generally realized by mutually staggering the flowing directions of gas and liquid during heat exchange, and in the invention, because the flowing direction of the gas in the gas flowing channel is opposite to the flowing direction of the liquid in the liquid flowing channel, pure countercurrent can be realized during heat exchange, and the heat exchange temperature difference is increased, so that the heat transfer quantity is increased, and the problem of lower heat dissipation efficiency in the mode of realizing the heat exchange effect by mutually staggering the flowing directions of the gas and the liquid in the prior art is solved.
In the invention, because a plurality of plate bundles 1 are supported by a plurality of fins, a gas flow channel is formed among a plurality of first fins 2, and the air inlet area of the plate-fin air cooler structure is the total area of a plurality of gas flow channels.
Meanwhile, in the air cooler with the gas-liquid plate-fin type in the prior art, the heat exchange effect of the mutually staggered collision flow of the gas and the liquid is poor during heat exchange, and in the invention, as the flowing direction of the gas in the gas flowing channel is opposite to the flowing direction of the liquid in the liquid flowing channel, the collision flow between the gas and the liquid is converted into the friction flow, so that the flowing resistance of the gas side is reduced, and the heat exchange effect is enhanced.
In detail, the gas flow and the liquid flow are in opposite directions, namely pure countercurrent, and friction and collision refer to the relationship between the fluid and the metal wall surface of the equipment, namely air and water in the application.
The big length of flow of air cooler air inlet area among the prior art is short, and when the fluid mainly collided the air cooler, the time-varying discharge air cooler that becomes through very short friction, and in this application, because the air inlet area is little, gas flow path is long, has realized that the collision flow is little, the long effect of length of fluid and air cooler friction.
The heat transfer temperature difference coefficient of cocurrent can be known by a thermodynamic calculation formula to be only about 0.9, and the heat transfer temperature difference coefficient of pure countercurrent is 1, so that in the application, the heat exchange temperature difference of 10% can be at least improved due to a pure countercurrent structure, and the heat exchange effect is greatly improved. Meanwhile, collision flow is reduced due to the design, resistance is reduced, the gas flow velocity in the air cooler can be increased to be more than 12m/s, and the gas flow velocity of the existing air cooler is not more than 5 m/s.
In detail, the number of the relos can be greatly increased according to the number of the relos, the number of the relos is increased according to a thermodynamic calculation formula, so that the number of the knoop is increased, and the convective heat transfer coefficient is greatly increased due to the fact that the number of the knoop Nu is hL/k, so that the heat exchange effect is improved.
In the formula of the Relo number, v, rho and mu are respectively the flow velocity, density and viscosity coefficient of the fluid, and d is a characteristic length; in the formula of the Knoop number, L represents the geometric characteristic length of the heat transfer surface; h represents the convective heat transfer coefficient of the fluid; k represents the thermal conductivity of the stationary fluid.
Further, a plurality of plate bundles 1 are arranged horizontally, the plurality of plate bundles 1 are parallel to each other, and the plurality of plate bundles 1 are all square plate bundles 1. Because a plurality of plate bundles 1 are parallel to each other and are square plate bundles 1, and the sizes of a plurality of first fins 2 are the same, the use space maximization of a gas flow channel and a liquid flow channel is kept, the modularized production can be facilitated, and the production efficiency is improved.
Further, a plurality of first fins 2 and a plurality of second fins are provided along the length direction of the plate bundle 1 to maximize the length of the gas flow path and the liquid flow path. Preferably, the distance between the adjacent first fins 2 is equal in the plurality of first fins 2, and the distance between the adjacent second fins is equal in the plurality of second fins, so that the support can be better provided for the plate bundle 1 or between the plate bundles 1.
Each plate bundle 1 comprises an upper plate 6, a lower plate and four side plates 7, the upper plate 6, the lower plate and the four side plates 7 form a closed shell, the water inlet 3 and the water outlet are respectively arranged on the two opposite side plates 7, and liquid can be prevented from flowing out through the closed shell as the liquid flow channel is arranged in the plate bundle 1.
The plate-fin air cooler structure further comprises a first seal head 4, a second seal head, a water inlet pipe 8 and a water outlet pipe 9, the water inlet 3 of the plate bundles 1 is connected with the first seal head 4, the first seal head 4 is connected with the water inlet pipe 8, the water outlets of the plate bundles 1 are connected with the second seal head, the second seal head is connected with the water outlet pipe 9, water in the water inlet pipe 8 is respectively introduced into the plate bundles 1 through the first seal head 4, liquid in the plate bundles 1 is collected to the water outlet pipe 9 through the second seal head, and the flowing process of the liquid in the liquid flowing channel is completed.
As an embodiment of the invention, the first seal head 4 is arranged at the front end of the plate bundle 1, the second seal head is arranged at the rear end of the plate bundle 1, a liquid flow channel from front to back is formed between the first seal head 4 and the second seal head, and the gas flow channel is a gas flow channel from back to front.
In detail, the gas enters the gas flow channel from the rear end of the plate-fin air cooler structure, flows along the gas flow channel, and leaves the gas flow channel from the front end of the plate-fin air cooler structure, so that the effect that the gas flows from the rear end to the front end of the plate-fin air cooler structure is achieved. Meanwhile, the first seal head 4 is connected with the water inlet pipe 8, the first seal head 4 is arranged at the front end of the plate bundle 1, the second seal head is connected with the water outlet pipe 9, and the second seal head is arranged at the rear end of the plate bundle 1, so that the inlet of liquid entering the liquid flow channel is arranged at the front end of the plate-fin air cooler structure, the outlet of the liquid leaving the liquid flow channel is arranged at the rear end of the plate-fin air cooler structure, the effect that the liquid flows from the front end to the rear end of the plate-fin air cooler structure is realized, and the effect that the flowing direction of gas in the gas flow channel is opposite to the flowing direction of the liquid in the liquid flow channel is realized.
In the invention, the gas-liquid cross flow of the existing air cooler is changed into pure countercurrent through structural optimization, so that the heat exchange efficiency of the invention is improved; the collision flow of air cooler now has changed into the friction flow through configuration optimization to reduced the air side flow resistance, solved the equipment that exists among the prior art bulky, need provide great space and carry out the problem of installing and the lower problem of mode radiating efficiency who exists through the effect of gaseous and liquid flow direction crisscross realization heat transfer each other.
The invention also provides an air cooler, which comprises an air cooler main body and the plate-fin air cooler structure, wherein the plate-fin air cooler structure is arranged in the air cooler main body.
As an implementation mode of the air cooler, the air cooler is applied to the automobile industry, can be used as an oil cooler and the like to be arranged outside an automobile, the windward direction faces to the head of the air side, and when the automobile runs, the outside air flows through the air cooler to achieve the effect of cooling; the faster the vehicle is moving, the greater the amount of cooling required. Meanwhile, the wind speed is accelerated, and the heat dissipation effect is higher, so that the heat exchange requirement is met.
All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Claims (8)
1. A plate-fin air cooler structure is characterized by comprising a plurality of plate bundles, wherein the plate bundles are stacked, adjacent plate bundles are supported by a plurality of first fins, and gas flow channels are formed among the first fins;
each plate bundle comprises a shell, a water inlet and a water outlet are respectively arranged on two opposite sides of the shell, a plurality of second fins are arranged in the shell, and a liquid flow channel is formed between the water inlet and the water outlet and among the second fins;
the direction of gas flow in the gas flow channel is opposite to the direction of liquid flow in the liquid flow channel.
2. The plate fin air cooler structure of claim 1, wherein the plurality of plate bundles are horizontally disposed and parallel to each other, and wherein the plurality of plate bundles are all square plate bundles.
3. The plate fin air cooler structure of claim 2, wherein the first plurality of fins and the second plurality of fins are disposed along a length of the plate bundle.
4. The plate fin air cooler structure of claim 3, wherein the spacing between adjacent ones of the first fins is equal; in the plurality of second fins, the adjacent second fins are equally spaced
5. The plate fin air cooler structure of claim 4, wherein each of the plate bundles includes an upper plate, a lower plate, and four side plates, the upper plate, the lower plate, and the four side plates forming a sealed enclosure, the water inlet and the water outlet being disposed on the opposing side plates, respectively.
6. The plate-fin air cooler structure of claim 5, further comprising a first head, a second head, a water inlet pipe and a water outlet pipe, wherein the water inlets of the plate bundles are connected with the first head, and the first head is connected with the water inlet pipe; the water outlets of the plate bundles are connected with the second seal head, and the second seal head is connected with the water outlet pipe.
7. The plate fin air cooler structure of claim 6, wherein the first header is disposed at a front end of the plate bundle and the second header is disposed at a rear end of the plate bundle, the first header and the second header forming a front-to-rear liquid flow channel therebetween; the gas flow channel is a back-to-front gas flow channel.
8. An air cooler comprising an air cooler body, further comprising a plate-fin air cooler structure according to any one of claims 1 to 7, said plate-fin air cooler structure being disposed in said air cooler body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619998.9A CN113865383A (en) | 2020-06-30 | 2020-06-30 | Plate-fin air cooler structure and air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619998.9A CN113865383A (en) | 2020-06-30 | 2020-06-30 | Plate-fin air cooler structure and air cooler |
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| Publication Number | Publication Date |
|---|---|
| CN113865383A true CN113865383A (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010619998.9A Pending CN113865383A (en) | 2020-06-30 | 2020-06-30 | Plate-fin air cooler structure and air cooler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592899A (en) * | 2022-02-21 | 2022-06-07 | 江南大学 | Novel mining air cooler |
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