CN211607187U - Isolated air heat exchanger - Google Patents
Isolated air heat exchanger Download PDFInfo
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- CN211607187U CN211607187U CN202020139398.8U CN202020139398U CN211607187U CN 211607187 U CN211607187 U CN 211607187U CN 202020139398 U CN202020139398 U CN 202020139398U CN 211607187 U CN211607187 U CN 211607187U
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Abstract
An isolated air heat exchanger is characterized in that an integrated wave-shaped heat exchange grating is arranged in a heat exchanger shell, a plurality of circulation channels are arranged on the front surface and the back surface of the heat exchange grating at intervals, and an external air inlet, a blowing device and an internal air outlet are arranged on the heat exchanger shell at one end of each circulation channel; an external air outlet, an internal air inlet and a blowing device are arranged on the heat exchanger shell at the other end of the plurality of circulation channels, wherein the external air outlet is positioned in front of the heat exchange grid isolation layer, and the internal air inlet and the blowing device are positioned behind the heat exchange grid isolation layer; this heat exchanger includes inside and outside two independent active air circulation system, can completely cut off outdoor electronic equipment inner space with the outside, keeps equipment internal working environment's temperature stability, drying and cleanliness factor.
Description
Technical Field
The utility model relates to a radiator technical field, concretely relates to isolated air heat exchanger.
Background
With the development of the electronic information industry, especially the technical development of liquid crystal and LED electronic display screens, outdoor advertising machines and display screens are widely applied to public open places. Because of the sun and rain and the temperature and humidity change conditions of the natural environment, strict requirements are provided for the working environment of the outdoor display screen case, the existing outdoor display screen monomer structure mainly adopts fan air duct type heat exchange, and a small part of products adopt an air conditioner temperature control mode. In the actual use process, the fan heat exchange system flows out of the equipment after external air which filters dust and water vapor through the filter circulates along the air channel inside the machine so as to take away heat of internal devices.
However, in the heat exchange system, the inside and the outside of the equipment are not absolutely isolated physically, dust and water vapor in air can not be completely removed by the air filter in the actual use process, and after a certain working time, the air inlet filter can accumulate a large amount of dust to block the filter, so that the ventilation quantity is reduced, and the heat exchange effect is reduced. Water vapor condensation caused by day and night temperature differences can also cause corrosion damage to internal electronic equipment. The air filter still needs to be replaced regularly during normal use.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an isolated air heat exchanger, this heat exchanger includes inside and outside two independent active air circulation system. The heat exchanger can completely isolate the internal space of the outdoor electronic equipment from the outside, keeps the airtightness of the inside of the equipment, and realizes the heat exchange between the inside and the outside of the equipment only through the heat exchange system of the heat exchanger, thereby avoiding the direct air exchange and contact between the inside and the outside of the equipment. Therefore, the temperature of the internal working environment of the equipment can be kept stable, and the equipment can be dried and cleaned.
The technical scheme of the utility model as follows:
an isolated air heat exchanger comprises a heat exchanger shell, wherein a heat exchange grid is arranged in the heat exchanger shell, an isolation layer is arranged in the heat exchange grid, the front surface and the rear surface of the isolation layer are not communicated with each other, so that outdoor air can not enter the inside of equipment, a plurality of circulation channels are respectively arranged on the front surface and the rear surface of the isolation layer, and an external air inlet, a blowing device and an internal air outlet are arranged on the heat exchanger shell at one end of each of the circulation channels; an external air outlet, an internal air inlet and a blowing device are arranged on the heat exchanger shell at the other end of the plurality of circulation channels, wherein the external air outlet is positioned in front of the heat exchange grid isolation layer, and the internal air inlet and the blowing device are positioned behind the heat exchange grid isolation layer; through the above design, the external air inlet, the blowing device and the external air outlet are all located in front of the heat exchange grid, and the internal air inlet, the blowing device and the internal air outlet are all located behind the heat exchange grid. So, this heat exchanger during operation, outside air can be under blast apparatus's effect from outside air intake flow through the heat transfer grid isolation layer preceding, flows out from the outside air outlet, and inside air can flow through the back of heat transfer grid isolation layer from inside air intake under blast apparatus's effect, flows out from the inside air outlet. And the external air and the internal air on the front and the back of the heat exchange grating realize conduction heat exchange in the flowing process.
Further, the heat exchange grid comprises a dense interval structure, preferably, the heat exchange grid comprises an integrated wavy structure, and the front space and the rear space of the heat exchange grid are divided into a plurality of circulation channels distributed at intervals. The hot air of the internal circulation and the cold space of the external circulation are mutually spaced to form multi-channel cold and heat exchange, provide sufficient heat exchange contact area and realize good heat conduction effect. And physical condition support is provided for effective heat exchange of equipment.
Furthermore, the material of the heat exchange grid comprises a metal heat conduction plate, such as an aluminum alloy sheet material and the like, so that the high-efficiency heat exchange performance is ensured. During manufacturing, the aluminum alloy sheet material can be processed and formed by a specific process to form a wavy grid structure, so that the heat exchange area can be increased by times, and the heat exchange efficiency is improved.
According to the isolated air heat exchanger, the two ends of the heat exchange grating are provided with the grating baffles, and the grating baffles can seal the front part or the rear part of the heat exchange grating isolation layer. The hot air inside the guide device or the cold air outside is discharged from the designated outlet.
Preferably, the width of the grid baffle is matched with the thickness of the heat exchange grid, a plurality of stop blocks distributed at intervals are distributed on the grid baffle, and the size and the interval of the stop blocks are matched with the size of each circulation channel on the heat exchange grid.
The isolated air heat exchanger comprises a fan, and the blowing direction of the fan faces to the hot air outlet or the cold air outlet. Preferably, the vortex fan is positioned behind the grille shutter to save heat exchange grille space and prolong the exchange time of hot air and cold air.
According to the isolated air heat exchanger, the height of the external air inlet is not less than that of the external air outlet, so that external circulating air is conveniently discharged to the lower part, dust settlement can be effectively reduced, the heat exchanger has a self-cleaning function, flushing of a circulating air channel can be performed through water flow in rainy days, and the use of consumables such as an air filter is reduced.
The isolated air heat exchanger can be additionally provided with a heater on one side facing the equipment, so that the internal circulation can be independently started to warm the inside of the equipment under the condition of low temperature.
The beneficial effects of the utility model reside in that:
1. the utility model discloses an isolated air heat exchanger mainly adopts the principle of thermal convection and heat exchange to design, divide into inner loop space and extrinsic cycle space with the heat transfer grid through the isolation layer, has realized the space isolation of cold and hot end to can seal the design with equipment, realize that equipment is inside thoroughly dustproof, prevent that steam condenses, through suitable specification lectotype adaptation, can realize the inside and outside 10 difference in temperature within of equipment, thereby ensure the normal operational environment of equipment.
2. The utility model discloses an isolated air heat exchanger, heat transfer grid adopt the aluminum alloy sheet material that the heat conductivity is good, guarantee efficient heat exchange performance, and wavy grid structure can increase heat exchange area at double moreover, improves heat exchange efficiency. The design of the positions of the vortex fan, the air inlet and the air outlet can also effectively solve the waterproof problem inside and outside the heat exchanger. The whole structure design is compact and reasonable, the occupied space is small, and the heat exchange efficiency is high.
3. The utility model discloses an isolated air heat exchanger can replace air conditioner refrigerating system, realizes the low-cost heat transfer, and the extrinsic cycle still has self-cleaning function moreover, and rainy day accessible rivers wash the circulation wind channel, and need not use air cleaner, has avoided filter dirt to seal, stained scheduling problem, can prolong the maintenance cycle, reduces the maintenance cost.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
In the drawings:
FIG. 1 is a diagram of the operation of an insulated air heat exchanger when installed in proximity to an apparatus;
fig. 2 is a perspective view of an insulated air heat exchanger according to the present embodiment 1;
FIG. 3 is a schematic diagram of an external circulation flow of an isolated air heat exchanger;
FIG. 4 is a schematic diagram of a heat exchange grid configuration;
FIG. 5 is an end view of a heat exchange grid;
FIG. 6 is a schematic view of the construction of a grille shutter;
FIG. 7 is a view showing the structural relationship between the grille shutter and the outside air outlet and the internal circulation vortex fan;
the components represented by the reference numerals in the figures are:
1. the heat exchanger comprises a heat exchanger shell, 2, an external air inlet, 3, an external air outlet, 4, an external circulation vortex fan, 5, a heat exchange grid, 6, an internal air inlet, 7, an internal air outlet, 8, an internal circulation vortex fan, 9, an equipment workpiece, 10, an equipment shell, 11, a grid baffle, 12, an external cold air circulation route, 13 and an internal hot air circulation route.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.
Example 1
Referring to fig. 1, fig. 1 is a working state diagram of an isolated air heat exchanger installed near equipment, the heat exchanger includes a heat exchanger shell 1, and two sets of circulation systems of hot air internal circulation and cold air external circulation are arranged in the heat exchanger shell 1 and are used for heat exchange of an internal space and an external space of the equipment. The heat exchanger shell 1 and the equipment workpiece 9 are jointly installed in the equipment shell 10, a hot air inner circulation system is arranged at one end, facing the equipment workpiece 9, of the heat exchanger shell 1, and a cold air outer circulation system is arranged at one end, facing the outside, of the heat exchanger shell.
Referring to fig. 2, a heat exchange grid 5 is arranged in the heat exchanger shell 1, an isolation layer is arranged in the heat exchange grid 5, and the front surface and the rear surface of the isolation layer are not communicated with each other to separate a hot air internal circulation system and a cold air external circulation system, so that outdoor air is prevented from entering the inside of the equipment.
Preferably, the heat exchange grid 5 is of an integral wavy structure, particularly a continuous equidistant bending structure, and can be formed by a specific process, see fig. 4 and 5. The front space and the rear space of the heat exchange grid 5 are divided into a plurality of flow channels which are distributed at intervals by the wavy isolating layers. The hot air of the internal circulation and the cold space of the external circulation are mutually spaced to form multi-channel cold and heat exchange, provide sufficient heat exchange contact area and realize good heat conduction effect. And physical condition support is provided for effective heat exchange of equipment.
As a further preference, the material of the heat exchange grid 5 comprises a metal heat conducting plate, such as an aluminum alloy sheet material, etc., so as to ensure efficient heat exchange performance. During manufacturing, the aluminum alloy sheet material can be processed and formed by a specific process to form a wavy grid structure, so that the heat exchange area can be increased by times, and the heat exchange efficiency is improved.
With continued reference to fig. 1 and 2, the cold air external circulation system in the heat exchanger housing 1 is located in front of the heat exchange grille 5 and faces the outdoor side, and includes an external air inlet 2, an external circulation vortex fan 4 and an external air outlet 3, wherein the external air inlet 2 and the external circulation vortex fan 4 are located at the upper part of the front of the heat exchange grille 5, and the external air can flow through the circulation channel in front of the isolation layer of the heat exchange grille 5 from the external air inlet 2 at the upper part and flow out from the external air outlet 3 at the lower part along the external cold air circulation route 12 by the external circulation vortex fan 4, as shown in fig. 3. The hot air circulation system in the heat exchanger shell 1 is located behind the heat exchange grid 5 and faces one side of the equipment, and comprises an inner air inlet 6, an inner air outlet 7 and an inner circulation vortex fan 8, wherein the inner air inlet 6 and the inner circulation vortex fan 8 are located at the lower part of the rear face of the heat exchange grid 5, and the inner air can flow through a circulation channel behind an isolation layer of the heat exchange grid 5 from the inner air inlet 6 at the lower part and flow out from the inner air outlet 7 at the upper part along an inner hot air circulation route 13 under the action of the inner circulation vortex fan 8. The reverse circulation flow of the hot air inner circulation and the cold air outer circulation enables the external air and the internal air on the front and back sides of the heat exchange grating 5 to realize conduction heat exchange in the flow process, and the design of the auxiliary air duct such as the wave-shaped heat exchange grating 5 can realize ideal heat exchange effect under the condition that the vortex fan accelerates the air flow. Of course, the terms "front" and "rear" are used herein in a relative sense, and do not limit the structure of the apparatus.
With reference to fig. 6 and 7, the two ends of the heat exchange grid 5 are provided with grid baffles 11, the width of each grid baffle 11 is matched with the thickness of the heat exchange grid 5, a plurality of stoppers are distributed on the grid baffles at intervals, the size and the interval of each stopper are matched with the size of each wavy circulation channel on the heat exchange grid 5, the front or the rear of an isolation layer of the heat exchange grid 5 can be sealed, and hot air or outdoor cold air in the equipment is guided to be discharged from a designated outlet. That is, the upper and lower grill baffles 11 can simultaneously close half of the openings of the upper heat exchange grills 5 for the internal circulation of hot air and half of the openings of the lower heat exchange grills 5 for the external circulation of cold air. When the hot air flows upwards to the top of the heat exchange grille 5, the hot air can only flow out from the inner air outlet 7, and when the cold air flows downwards to the bottom of the heat exchange grille 5, the cold air can only flow out from the outer air outlet 3. Meanwhile, the design that the grid baffle 11 shields half of the opening of the heat exchange grid 5 does not influence the blowing operation of the external circulation vortex fan 4 and the internal circulation vortex fan 8 to the inside of the heat exchange grid 5.
In this embodiment, the blowing direction of the vortex fan is toward the hot air or cold air outlet. Preferably, the vortex fan is located behind the grill shutter 11 to save space of the heat exchange grill 5, maximize a passage for exchanging hot and cold air, and prolong an exchanging time of the hot air and the cold air.
In this embodiment, the external air outlet 3 is located above the lower grille shutter 11, and the internal air outlet is located below the upper grille shutter 11, so that the hot air or the cold air can flow out of the heat exchange grille 5.
In this embodiment, heat exchanger shell 1 is vertically placed and is used, makes outside air intake 2 highly be higher than outside air outlet height, and the extrinsic cycle air of being convenient for discharges to the lower part, can effectively reduce the dust and subside, makes this heat exchanger have self-cleaning function, and the rainfall weather more can carry out the washing in circulation wind channel through rivers moreover, has reduced the use of consumptive material such as air cleaner.
In addition, the isolated air heat exchanger can be additionally provided with a heater on one side facing the equipment, so that the internal circulation can be independently started to heat the inside of the equipment under the condition of low temperature.
Specifically, when the isolated air heat exchanger works, a hot air internal circulation system facing one side of the equipment and a cold air external circulation system facing the outside are started simultaneously, heat emitted by the equipment enters a wavy channel behind the heat exchange grating 5 from an internal air inlet 6 below under the action of an internal circulation vortex fan 8 and flows out from an internal air outlet 7 above, and meanwhile, external cold air enters a wavy channel in front of the heat exchange grating 5 from an external air inlet 2 above under the action of an external circulation vortex fan 4 and flows out from an external air outlet 7 below. Air convection of the cold and hot sections respectively and independently work, cold air and hot air respectively flow in the wave-shaped channels in front of and behind the heat exchange grating 5 in a reverse circulation mode, heat exchange is continuously carried out, the temperature difference within 10 degrees inside and outside the equipment can be achieved, and the temperature requirements of the working environment of most of electronic equipment are basically met. Meanwhile, external cold air cannot enter the equipment, so that the temperature stability, the dryness and the cleanliness of the internal working environment of the equipment are maintained.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. An isolated air heat exchanger is characterized by comprising a heat exchanger shell (1), wherein a heat exchange grating (5) is arranged in the heat exchanger shell (1), an isolation layer is arranged in the heat exchange grating (5), the front surface and the rear surface of the isolation layer are not communicated with each other, a plurality of circulation channels are respectively arranged on the front surface and the rear surface of the isolation layer, an external air inlet (2), a blowing device and an internal air outlet (7) are arranged on the heat exchanger shell (1) at one end of each circulation channel, wherein the external air inlet (2) and the blowing device are positioned in front of the isolation layer of the heat exchange grating (5), and the internal air outlet (7) is positioned behind the isolation layer of the heat exchange grating (5); an external air outlet (3), an internal air inlet (6) and a blowing device are arranged on the heat exchanger shell (1) at the other end of the plurality of circulation channels, wherein the external air outlet (3) is positioned in front of the isolation layer of the heat exchange grating (5), and the internal air inlet (6) and the blowing device are positioned behind the isolation layer of the heat exchange grating (5); outside air can flow through heat transfer grid (5) isolation layer from outside air intake (2) under blast apparatus's effect before, flows out from outside air outlet (3), and inside air can flow through the back of heat transfer grid (5) isolation layer from inside air intake (6) under blast apparatus's effect, flows out from inside air outlet (7).
2. An insulated air heat exchanger according to claim 1, characterised in that the heat exchange grid (5) comprises a densely spaced structure.
3. An insulated air heat exchanger according to claim 2, characterised in that the heat exchange grille (5) comprises an integral corrugated structure dividing the space in front of and behind the heat exchange grille (5) into a plurality of flow channels spaced apart.
4. An insulated air heat exchanger according to any of claims 1-3, characterized in that the material of the heat exchange grid (5) comprises a metal heat conducting plate.
5. An insulated air heat exchanger according to claim 4, characterised in that the heat exchange grate (5) is provided with grate baffles (11) at both ends, the grate baffles (11) being capable of closing the front or the rear of the insulation layer of the heat exchange grate (5).
6. An isolated air heat exchanger according to claim 5, characterized in that the width of the grid baffle (11) is matched with the thickness of the heat exchange grid (5), and a plurality of baffles are distributed on the grid baffle (11) at intervals.
7. An insulated air heat exchanger according to claim 5 or 6, wherein the blowing means comprises a vortex fan.
8. An insulated air heat exchanger according to claim 7, characterised in that the vortex fan is located behind the grille shutter (11).
9. An insulated air heat exchanger according to claim 1, characterised in that the height of the outside air inlet opening (2) is not less than the height of the outside air outlet opening (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020139398.8U CN211607187U (en) | 2020-01-21 | 2020-01-21 | Isolated air heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020139398.8U CN211607187U (en) | 2020-01-21 | 2020-01-21 | Isolated air heat exchanger |
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| CN211607187U true CN211607187U (en) | 2020-09-29 |
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| CN202020139398.8U Active CN211607187U (en) | 2020-01-21 | 2020-01-21 | Isolated air heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127746A1 (en) * | 2020-12-14 | 2022-06-23 | 华为技术有限公司 | Cabinet assembly and heat exchanger |
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2020
- 2020-01-21 CN CN202020139398.8U patent/CN211607187U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127746A1 (en) * | 2020-12-14 | 2022-06-23 | 华为技术有限公司 | Cabinet assembly and heat exchanger |
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