CN116067204A - Microchannel heat exchange device with controllable heat exchange efficiency - Google Patents
Microchannel heat exchange device with controllable heat exchange efficiency Download PDFInfo
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- CN116067204A CN116067204A CN202310041199.1A CN202310041199A CN116067204A CN 116067204 A CN116067204 A CN 116067204A CN 202310041199 A CN202310041199 A CN 202310041199A CN 116067204 A CN116067204 A CN 116067204A
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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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1607—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
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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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
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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
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a microchannel heat exchange device with controllable heat exchange efficiency, which comprises a supporting device, an adjusting device and a flow guiding device, wherein the supporting device is connected with the adjusting device, the flow guiding device is connected with the supporting device, the supporting device comprises a shell, two sides of the shell are respectively provided with a flow dividing pipe and a flow collecting pipe, the flow guiding device comprises a plurality of partition boards, a working cavity is arranged on the shell, the plurality of partition boards are sequentially arranged in the working cavity, the working cavity is divided into a plurality of heat exchange grooves by the partition boards, the supporting device is used as a main bearing foundation, a heat exchange space is provided by the working cavity on the shell, the cooling medium is controlled to be input by the adjusting device, so that the controllable heat exchange efficiency is ensured, the flow guiding device respectively conducts layered flow guiding on hot air and the cooling medium, the flow dividing pipes and the flow collecting pipes on two sides of the shell conduct auxiliary flow guiding on the fluid medium, and the working cavity is divided into a plurality of heat exchange grooves by the partition boards, so that multi-stroke heat exchange is facilitated.
Description
Technical Field
The invention relates to the technical field of heat exchange devices, in particular to a microchannel heat exchange device with controllable heat exchange efficiency.
Background
The micro-channel heat exchange device is a novel efficient heat exchanger, and compared with the traditional heat exchanger, the micro-channel heat exchange device has large specific surface area and more compact structure. However, with the continuous complicating of the use environment, the conventional micro-channel heat exchange device is limited in use condition, and cannot meet the high-efficiency operation requirement of the heat exchange device under complex multiple working conditions.
In the hot air flow cooling process, fluctuation easily occurs in the air volume conveying process, so that the input heat can also generate larger fluctuation, the output cold quantity of a conventional heat exchange device is constant, and the input cold quantity cannot be automatically adjusted according to the input heat only by preset output cold quantity of a passive adjusting mechanism, so that the heat exchange efficiency is uncontrollable, and the heat exchange effect is affected.
Heat exchange is the process of transferring heat between two fluids due to a temperature difference, and is generally accomplished by three of heat conduction, heat convection and heat radiation. The heat exchange efficiency is generally referred to as: heat exchange amount/heat exchange area. Compared with the general heat transfer process, the heat exchange stroke in the micro-channel heat exchange device is kept constant, the heat exchange area is kept constant, the heat exchange efficiency is kept constant under the condition that the heat and the output cold quantity are kept constant, namely the heat exchange quantity in unit time is kept stable, but when the hot air flow input fluctuates, the output cold quantity of the general heat exchange device is still kept constant, so that the cold and heat quantity duty ratio changes, and a temperature difference is formed, namely the heat exchange efficiency fluctuates.
In addition, the conventional micro-channel heat exchange device has determined an integral cooling stroke in the production and design processes, and the cooling stroke is a fixed stroke, so that the hot air flow can pass through the fixed cooling stroke no matter what heat quantity is cooled, and the temperature of the hot air flow is reduced by the calibrated temperature, so that the cooling stroke is overlong.
Disclosure of Invention
The invention aims to provide a microchannel heat exchange device with controllable heat exchange efficiency, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a controllable microchannel heat transfer device of heat exchange efficiency, includes strutting arrangement, adjusting device and guiding device, and strutting arrangement and adjusting device are connected, and guiding device and strutting arrangement are connected, and strutting arrangement includes the casing, and the casing both sides are equipped with shunt tubes and collector respectively, and guiding device includes a plurality of baffles, is equipped with the working chamber on the casing, and a plurality of baffles are arranged in the working chamber in proper order, and the baffle separates into a plurality of heat transfer grooves with the working chamber.
Further, the flow guiding device further comprises a plurality of flat pipes and fins, the flat pipes and the fins are respectively arranged in the heat exchange grooves, a plurality of flow passages are arranged on the flat pipes, air inlet passages are arranged on the flow dividing pipes, the tail ends of the air inlet passages face the fins, and the fins are wavy;
the adjusting device comprises a thermal expansion air bag, a heat exchange plate and an opening plate, wherein a temperature sensing groove is formed in one side of the air inlet channel, the thermal expansion air bag is arranged in the temperature sensing groove, one end of the heat exchange plate is inserted into the air inlet channel, and the other end of the heat exchange plate is inserted into the thermal expansion air bag;
one end of the thermal expansion air bag is in transmission connection with the opening plate, the opening plate is in sliding connection with the temperature sensing groove, the temperature sensing groove is positioned between the air inlet channel and the cooling medium inlet, the temperature sensing groove is communicated with the cooling medium inlet, and one end of the opening plate, which is far away from the thermal expansion air bag, is inserted into the cooling medium inlet.
Further, an opening slot is arranged on the opening plate;
when the flow is increased, the opening plate slides to the direction far away from the thermal expansion air bag, and the overlapping area of the opening groove and the cooling medium inlet is increased.
Further, guiding device still includes first base plate, second base plate, magnetic pillar and coil, is equipped with the switching-over groove on the pressure manifold, and the switching-over groove is towards the fin, and first base plate and second base plate fastening connection, first base plate and second base plate one end and switching-over cell wall face rigid coupling, and the coefficient of thermal expansion of first base plate and second base plate is different, and magnetic pillar one end and first base plate butt are equipped with the detection chamber on the pressure manifold, and the detection intracavity is arranged in to the coil, and magnetic pillar keeps away from first base plate one end and inserts the detection intracavity.
Further, the detection cavity is located above the first substrate, and the thermal expansion coefficient of the second substrate is larger than that of the first substrate.
Further, a plurality of drainage ports are formed in the partition plate, the opening and closing assembly further comprises a shutoff plate and an electromagnet, the shutoff plate and the electromagnet are respectively arranged in the drainage ports, through holes are formed in the corresponding positions of the fins in the drainage ports, the shutoff plate is in sliding connection with the through holes of the fins, the weight of the plurality of shutoff plates is gradually reduced along the flow guiding direction of the fins, the shutoff plate is provided with perforations, and the perforations are located on the lower layer of the shutoff plate and electrically connected with the coils and the electromagnet;
when the flow is stopped, the perforation of the stop plate does not pass through the through hole on the fin.
As optimization, the micro-channel heat exchange device also comprises a plurality of bypass pipes, and one side of the leakage flow port, which is far away from the fins, is intermittently conducted with the bypass pipes.
As optimization, the flat tubes in the same heat exchange groove are positioned above the fins.
As an optimization, the adjusting device further comprises a plurality of fins, and the fins are arranged across the flow channel.
As an optimization, the flash is obliquely arranged, and the flash is positioned at a high position along the front end of the medium flowing direction in the flow passage.
Compared with the prior art, the invention has the following beneficial effects: the air inlet channel is provided with the folded angle, the folded angle is provided with the groove, so that hot air moves into the groove under the action of inertia, and flows towards the outlet of the air inlet channel after impacting the wall surface of the groove, the hot air positively flows to block the impact backflow hot air, so that the hot air in the groove is compressed, one end of a heat exchange plate is inserted into the groove of the air inlet channel, the heat expansion air bag is filled with compressed gas, the heat exchange is carried out through the heat exchange plate, the compressed gas in the heat expansion air bag is expanded, and the opening plate is pushed to move, thereby controlling the overflow area of a cooling medium inlet, regulating the cold quantity in real time according to the heat of the air inlet, and ensuring the heat exchange efficiency; when hot air flows into the reversing groove, the first substrate and the second substrate in the reversing groove are heated at the same time, the materials of the first substrate and the second substrate are different, under the same temperature rising condition, the expansion rate is different, as the first substrate and the second substrate are fixedly connected, the plate with smaller expansion rate has smaller elongation degree, the plate with larger expansion rate has larger elongation degree, the plate with larger elongation degree is limited by another plate, thus forming a bending radian, in the bending process, the magnetic column is driven to move along the detection cavity, the coil is driven to make cutting magnetic induction line movement, induced current is generated, the cooling stroke of the hot air flowing into the reversing groove is a precooling stroke, temperature monitoring is carried out after the same precooling stroke, and the subsequent cooling stroke is longer when the temperature is higher; when the hot air flow is reduced to a preset temperature, the electromagnet is electrically connected with the coil, the opposite ends of the electromagnet and the shutoff plate are the same-name magnetic poles, under the action of magnetic field repulsive force, the shutoff plate extends out along the flow outlet and penetrates through the through holes on the fins to locally separate the hot air flow, the cooled hot air flow is directly discharged through the through holes on the fins and enters the flow outlet, the subsequent travel is avoided, the gas circulation efficiency is influenced, the weight of the shutoff plate is reduced, the magnetic force required by the movement of the subsequent shutoff plate is gradually increased, namely, the temperature is higher, the current on the coil is higher, the cut-off position is closer to the rear end of the cooling travel, and the cooling travel length is automatically adjusted according to the residual heat of the hot air flow.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic general construction of the present invention;
FIG. 2 is a schematic view of hot air diversion of the present invention;
FIG. 3 is a schematic flow diagram of a cooling medium according to the present invention;
FIG. 4 is an enlarged view of part A of the view of FIG. 1;
FIG. 5 is an enlarged view of part B of the view of FIG. 1;
FIG. 6 is an enlarged view of part C of the view of FIG. 1;
FIG. 7 is a schematic view of the hot air shutoff guide of the present invention;
in the figure: the device comprises a 1-supporting device, a 11-shell, a 111-working cavity, a 12-shunt pipe, a 121-air inlet channel, a 122-temperature sensing groove, a 123-cooling medium inlet, a 13-collecting pipe, a 131-detecting cavity, a 132-reversing groove, a 2-adjusting device, a 21-thermal expansion air bag, a 22-heat exchange plate, a 23-opening plate, a 24-flash, a 3-flow guiding device, a 31-flat pipe, a 32-fin, a 33-opening and closing component, a 331-first base plate, a 332-second base plate, a 333-shutoff plate, a 334-electromagnet, a 335-magnetic column, a 336-coil, a 34-baffle plate, a 341-leakage port and a 4-bypass pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides the technical scheme that:
as shown in fig. 1 to 7, a microchannel heat exchange device with controllable heat exchange efficiency comprises a supporting device 1, an adjusting device 2 and a flow guiding device 3, wherein the supporting device 1 is connected with the adjusting device 2, the flow guiding device 3 is connected with the supporting device 1, the supporting device 1 comprises a shell 11, two sides of the shell 11 are respectively provided with a shunt pipe 12 and a collector pipe 13, the flow guiding device 3 comprises a plurality of partition boards 34, a working cavity 111 is arranged on the shell 11, the plurality of partition boards 34 are sequentially arranged in the working cavity 111, and the partition boards 34 divide the working cavity 111 into a plurality of heat exchange grooves.
The supporting device 1 is used as a main bearing foundation, a heat exchange space is provided through the working cavity 111 on the shell 11, the cooling medium input is controlled through the adjusting device 2, so that the heat exchange efficiency is controllable, the hot air flow and the cooling medium are respectively conducted with layered flow guiding through the flow guiding device 3, the flow dividing pipes 12 and the flow collecting pipes 13 on two sides of the shell 11 conduct auxiliary flow guiding on the fluid medium, the working cavity 111 is divided into a plurality of heat exchange grooves through the partition plates 34, and the multi-stroke heat exchange is facilitated.
Further, the flow guiding device 3 further comprises a plurality of flat pipes 31 and fins 32, the flat pipes 31 and the fins 32 are respectively arranged in the heat exchange grooves, a plurality of flow passages are arranged on the flat pipes 31, air inlet channels 121 are arranged on the shunt pipes 12, the tail ends of the air inlet channels 121 face the fins 32, and the fins 32 are in wave shape;
the adjusting device 2 comprises a thermal expansion air bag 21, a heat exchange plate 22 and an opening plate 23, wherein a temperature sensing groove 122 is formed in one side of the air inlet channel 121, the thermal expansion air bag 21 is arranged in the temperature sensing groove 122, one end of the heat exchange plate 22 is inserted into the air inlet channel 121, and the other end of the heat exchange plate 22 is inserted into the thermal expansion air bag 21;
one end of the thermal expansion air bag 21 is in transmission connection with the opening plate 23, the opening plate 23 is in sliding connection with the temperature sensing groove 122, the temperature sensing groove 122 is located between the air inlet channel 121 and the cooling medium inlet 123, the temperature sensing groove 122 is communicated with the cooling medium inlet 123, and one end, far away from the thermal expansion air bag 21, of the opening plate 23 is inserted into the cooling medium inlet 123.
The liquid cooling medium is sent into the flow passage on the flat tube 31 through the cooling medium inlet 123, the cooling medium is guided through the flow passage, hot air is sent into the interlayer of the fin 32 and the flat tube 31 through the air inlet 121, the flat tube 31 is made of high-heat-conductivity material, the cooling medium and the hot air exchange are facilitated, the hot air is cooled, the hot air is guided through the wavy fin 32, the unit density is increased in the upward guiding process, the heat exchange efficiency is improved, the air inlet 121 is arranged in a folded angle, a groove is formed in the folded angle, hot air moves into the groove under the inertia effect, the hot air collides with the wall surface of the groove to flow towards the outlet of the air inlet 121, the hot air positively flows to block the back flow hot air, the hot air in the groove is compressed, one end of the heat exchange piece 22 is inserted into the groove of the air inlet 121, the hot air expansion bag 21 is filled with compressed air, the heat exchange is performed through the heat exchange piece 22, the compressed air in the hot air expansion bag 21 is expanded, the opening plate 23 is pushed to move, the overflow area of the cooling medium inlet 123 is controlled, the cold heat exchange volume is adjusted in real time according to the heat, the heat exchange volume duty ratio is adjusted, the heat exchange volume is always kept constant, and the heat exchange efficiency is kept constant.
Further, an opening slot is formed on the opening plate 23;
when the flow increases, the aperture plate 23 slides away from the thermal expansion bladder 21, and the overlapping area of the aperture groove and the cooling medium inlet 123 increases.
The aperture plate 23 is provided with an aperture slot, the flow area is controlled through the aperture slot, thus controlling the inflow of a cooling medium, for example, the hot air and the cooling medium are fully heat exchanged under the calibration working condition, the highest heat exchanging amount is generated in the operation time, the cold quantity provided by the cold end can carry 5000 joules of heat, but when the fluctuation of the hot air is increased due to input, the heat released by the hot air when the hot air is reduced to the calibration temperature is joules in the time period, the cold end can only remove 5000 joules of heat from the hot air, the hot air can not be reduced to the calibration temperature, the cooled hot air is still higher than the calibration temperature after the heat exchanging is finished, the temperature difference is still remained between the calibrated temperature and the calibration temperature, the heat exchanging amounts at two sides are always kept the same in the heat exchanging process, when the hot air inflow is increased, the hot air is driven to extend out through the aperture plate 23 by the hot air expansion bag 21, the flow area of the cold end provided by the cold end is increased, the instantaneous flow is increased, the heat exchanging amount is reduced, the hot air inflow of the hot air is adjusted in real time according to the instantaneous hot air inflow amount, and the heat exchanging efficiency is ensured.
Further, the flow guiding device 3 further comprises a first substrate 331, a second substrate 332, a magnetic column 335 and a coil 336, the collecting pipe 13 is provided with a reversing groove 132, the reversing groove 132 faces the fin 32, the first substrate 331 and the second substrate 332 are fixedly connected, one end of the first substrate 331 and one end of the second substrate 332 are fixedly connected with the wall surface of the reversing groove 132, the thermal expansion coefficients of the first substrate 331 and the second substrate 332 are different, one end of the magnetic column 335 is abutted to the first substrate 331, the collecting pipe 13 is provided with a detection cavity 131, the coil 336 is arranged in the detection cavity 131, and one end of the magnetic column 335 far away from the first substrate 331 is inserted into the detection cavity 131.
The first substrate 331 and the second substrate 332 are fixed by a reversing groove 132 on the collecting pipe 13, hot air flows into the reversing groove 132 along the gaps of the fins 32 and the flat tubes 31 gradually, the hot air enters the downward migration path for cooling through the reversing groove 132, cooling efficiency is ensured, the hot air flows along the flat tubes 31 in the flowing process, and exchanges heat with cooling media in the flat tubes 31, the detection cavity 131 is positioned at one side of the reversing groove 132 and is used for installing the coil 336 and slidably guiding the magnetic column 335, after the hot air enters the reversing groove 132, the first substrate 331 and the second substrate 332 in the reversing groove 132 are heated at the same time, the first substrate 331 and the second substrate 332 are different in material, expansion rates are different under the same temperature rising condition, the boards with smaller expansion rates are smaller in expansion degree, the boards with larger expansion rates are limited by another board, so that a bending radian is formed, the magnetic column is driven to move along the detection cavity 131, the coil 336 is enabled to make a cutting magnetic induction line to move, the hot air flow enters the reversing groove 132, the hot air flow is detected to be higher in temperature, the temperature is required to be precooled after the reversing groove 132 is cooled, and the cooling process is required to be precooled by the same, and the temperature is required to be higher after the reversing and the cooling process is cooled.
Further, the detection chamber 131 is located above the first substrate 331, and the thermal expansion coefficient of the second substrate 332 is greater than that of the first substrate 331.
The first substrate 331 is close to the detection cavity 131, so that the thermal expansion coefficient of the second substrate 332 is larger than that of the first substrate 331, and in the expansion process, the second substrate 332 is deformed towards the first substrate 331, so that the magnetic column 335 is driven to move by the first substrate 331, and temperature monitoring is performed.
Further, a plurality of drainage ports 341 are formed in the partition plate 34, the opening and closing assembly 33 further comprises a shutoff plate 333 and an electromagnet 334, the shutoff plate 333 and the electromagnet 334 are respectively arranged in the drainage ports 341, through holes are formed in the corresponding positions of the fins 32 in the drainage ports 341, the shutoff plate 333 is slidably connected with the through holes of the fins 32, the weight of the plurality of shutoff plates 333 is gradually reduced along the flow guiding direction of the fins 32, perforations are formed in the shutoff plate 333 and are positioned on the lower layer of the shutoff plate 333, and the coil 336 is electrically connected with the electromagnet 334;
the perforation of the cutoff plate 333 does not pass through the through hole of the fin 32 at the time of cutoff.
The subsequent cooling stroke of precooling stroke is adjusted according to the drainage port 341 arranged on the baffle 34, thereby being convenient for automatically adjusting the cooling stroke according to different hot air inflow, ensuring heat exchange efficiency, when the hot air flows are directly discharged from the drainage port 341 after being reduced to a preset temperature, preventing the subsequent stroke from being blocked, affecting the gas conveying efficiency, installing the electromagnet 334 and the interception plate 333 through the drainage port 341, enabling the interception plate 333 to slide along the drainage port 341, electrically connecting the electromagnet 334 with the coil 336, enabling the opposite ends of the interception plate 333 to be identical magnetic poles in the electrifying process of the electromagnet 334, enabling the interception plate 333 to extend along the drainage port 341 under the effect of magnetic field repulsive force, penetrating through the through holes on the fins 32, directly discharging the cooled hot air flows into the drainage port 341, avoiding the influence on the gas circulation efficiency, gradually increasing the required magnetic force for moving the interception plate 333 through the weight decreasing arrangement of the interception plate 333, namely, enabling the current on the coil 336 to be large, enabling the interception plate 333 to be close to the cooling back end, automatically adjusting the length of the interception plate 333 according to the heat flow, and further avoiding the subsequent flow from flowing into the interception plate 333 from the through holes on the interception plate 333.
As an optimization, the micro-channel heat exchange device further comprises a plurality of bypass pipes 4, and one side of the drainage port 341 away from the fins 32 is intermittently conducted with the bypass pipes 4. The bypass pipe 4 is communicated with the leakage hole 341, so that the cooled hot air flow is conveniently and directly led out, flow resistance in the pipe is prevented from being caused, and the heat exchange efficiency is improved.
As an optimization, the flat tubes 31 in the same heat exchange groove are positioned above the fins 32. The flat tube 31 is arranged on the upper part, so that the cooling medium and the hot air flow on the fins 32 at the lower layer are ensured to be fully contacted and heat-exchanged, and the heat exchange quantity is ensured.
As an optimization, the adjusting device 2 further comprises a number of fins 24, the fins 24 being arranged along the flow path. The fins 24 are arranged to flow the cooling medium, so that only the gaseous cooling medium flows out finally, and the waste of cold energy is prevented.
Preferably, the fins 24 are arranged obliquely, and the fins 24 are located at a high position along the front end of the flow passage in the medium flow direction. The fins 24 are arranged obliquely along the flow direction of the cooling medium, so that the residual cooling medium is left between the adjacent fins 24, and the gas-liquid separation is avoided after the cooling medium flows out of the heat exchange device, and then the cooling is performed again.
The working principle of the invention is as follows: the air inlet 121 is provided with a folded corner, a groove is arranged at the folded corner, hot air moves into the groove under the action of inertia, and flows towards the outlet of the air inlet 121 after impacting the wall surface of the groove, the hot air positively flows to block the impact reverse hot air, so that the hot air in the groove is compressed, one end of a heat exchange plate 22 is inserted into the groove of the air inlet 121, the heat expansion air bag 21 is filled with compressed gas, the heat exchange is carried out through the heat exchange plate 22, the compressed gas in the heat expansion air bag 21 is expanded, and the opening plate 23 is pushed to move, so that the overflow area of the cooling medium inlet 123 is controlled, the cold quantity is regulated in real time according to the heat of the air inlet, and the heat exchange quantity is ensured; when the hot air flows into the reversing groove 132, the first substrate 331 and the second substrate 332 in the reversing groove 132 are heated at the same time, the materials of the first substrate 331 and the second substrate 332 are different, and under the same temperature rising condition, the expansion rate is different, as the first substrate 331 and the second substrate 332 are tightly connected, the expansion rate of the plate with smaller expansion rate is smaller, the expansion rate of the plate with larger expansion rate is larger, the plate with larger expansion rate is limited by another plate, so as to form a bending radian, in the bending process, the magnetic column 335 is driven to move along the detection cavity 131, the coil 336 is made to perform cutting magnetic induction line movement, induced current is generated, the cooling stroke of the hot air flowing into the reversing groove 132 is cut off, the temperature monitoring is performed after the same pre-cooling stroke, and the subsequent cooling stroke is longer when the temperature is higher; when the hot air flow is reduced to a preset temperature, the electromagnet 334 is electrically connected with the coil 336, the opposite ends of the electromagnet 334 and the shut-off plate 333 are the same-name magnetic poles in the electrifying process, under the action of the repulsive force of the magnetic field, the shut-off plate 333 extends out along the discharge opening 341 and penetrates through the through holes on the fins 32 to locally isolate the hot air flow, the cooled hot air flow is directly discharged from the discharge opening 341 through the through holes on the fins 32, the subsequent travel is avoided, the gas circulation efficiency is influenced, the weight of the shut-off plate 333 is reduced, the magnetic force required by the subsequent movement of the shut-off plate 333 is gradually increased, namely, the higher the temperature is, the higher the current on the coil 336 is, the close to the rear end of the cooling travel is, and the cooling travel length is automatically adjusted according to the residual heat of the hot air flow.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a controllable microchannel heat transfer device of heat exchange efficiency which characterized in that: the micro-channel heat exchange device comprises a supporting device (1), an adjusting device (2) and a flow guiding device (3), wherein the supporting device (1) is connected with the adjusting device (2), the flow guiding device (3) is connected with the supporting device (1), the supporting device (1) comprises a shell (11), two sides of the shell (11) are respectively provided with a flow dividing pipe (12) and a flow collecting pipe (13), the flow guiding device (3) comprises a plurality of partition boards (34), a working cavity (111) is arranged on the shell (11), a plurality of partition boards (34) are sequentially arranged in the working cavity (111), and the partition boards (34) divide the working cavity (111) into a plurality of heat exchange grooves.
2. A microchannel heat exchange device with controllable heat exchange efficiency according to claim 1, wherein: the flow guiding device (3) further comprises a plurality of flat pipes (31) and fins (32), the flat pipes (31) and the fins (32) are respectively arranged in the heat exchange grooves, a plurality of flow passages are arranged on the flat pipes (31), air inlets (121) are arranged on the flow dividing pipes (12), the tail ends of the air inlets (121) face the fins (32), and the fins (32) are in wave shape;
the adjusting device (2) comprises a thermal expansion air bag (21), a heat exchange plate (22) and an opening plate (23), wherein a temperature sensing groove (122) is formed in one side of the air inlet channel (121), the thermal expansion air bag (21) is arranged in the temperature sensing groove (122), one end of the heat exchange plate (22) is inserted into the air inlet channel (121), and the other end of the heat exchange plate is inserted into the thermal expansion air bag (21);
one end of the thermal expansion air bag (21) is in transmission connection with an opening plate (23), the opening plate (23) is in sliding connection with a temperature sensing groove (122), the temperature sensing groove (122) is located between an air inlet channel (121) and a cooling medium inlet (123), the temperature sensing groove (122) is communicated with the cooling medium inlet (123), and one end of the opening plate (23) far away from the thermal expansion air bag (21) is inserted into the cooling medium inlet (123).
3. A microchannel heat exchange device with controllable heat exchange efficiency according to claim 2, wherein: an opening slot is arranged on the opening plate (23);
when the flow is increased, the opening plate (23) slides in a direction away from the thermal expansion air bag (21), and the overlapping area of the opening groove and the cooling medium inlet (123) is increased.
4. A microchannel heat exchange device with controllable heat exchange efficiency according to claim 3, wherein: the flow guiding device (3) further comprises an opening and closing assembly (33), the opening and closing assembly (33) comprises a first substrate (331), a second substrate (332), a magnetic column (335) and a coil (336), a reversing groove (132) is formed in the collecting pipe (13), the reversing groove (132) faces the fins (32), the first substrate (331) and the second substrate (332) are fixedly connected, one end of the first substrate (331) and one end of the second substrate (332) are fixedly connected with the wall surface of the reversing groove (132), the thermal expansion coefficients of the first substrate (331) and the thermal expansion coefficients of the second substrate (332) are different, one end of the magnetic column (335) is abutted to the first substrate (331), a detection cavity (131) is formed in the collecting pipe (13), the coil (336) is arranged in the detection cavity (131), and one end of the magnetic column (335) is far away from the first substrate (331) and is inserted into the detection cavity (131).
5. The controllable heat exchange efficiency microchannel heat exchange device of claim 4, wherein: the detection cavity (131) is located above the first substrate (331), and the thermal expansion coefficient of the second substrate (332) is larger than that of the first substrate (331).
6. The controllable heat exchange efficiency microchannel heat exchange device of claim 5, wherein: the baffle plate (34) is provided with a plurality of drainage ports (341), the opening and closing assembly (33) further comprises a shutoff plate (333) and an electromagnet (334), the shutoff plate (333) and the electromagnet (334) are respectively arranged in the drainage ports (341), through holes are formed in the corresponding positions of the fins (32) in the drainage ports (341), the shutoff plate (333) are in sliding connection with the through holes of the fins (32), the weight of the shutoff plate (333) is gradually reduced along the flow guiding direction of the fins (32), the shutoff plate (333) is provided with perforations, the perforations are positioned at the lower layer of the shutoff plate (333), and the coil (336) is electrically connected with the electromagnet (334);
when the flow is stopped, the perforation of the stop plate (333) does not pass through the through hole on the fin (32).
7. The controllable heat exchange efficiency microchannel heat exchange device of claim 6, wherein: the micro-channel heat exchange device further comprises a plurality of bypass pipes (4), and one side, far away from the fins (32), of the leakage opening (341) is intermittently conducted with the bypass pipes (4).
8. The controllable heat exchange efficiency microchannel heat exchange device of claim 7, wherein: the flat tubes (31) in the same heat exchange groove are positioned above the fins (32).
9. The controllable heat exchange efficiency microchannel heat exchange device of claim 8, wherein: the regulating device (2) further comprises a plurality of fins (24), and the fins (24) are arranged along the flow passage.
10. A microchannel heat exchange device with controllable heat exchange efficiency according to claim 9, wherein: the fins (24) are obliquely arranged, and the fins (24) are positioned at a high position along the flow direction of the cooling medium in the flow passage, which is close to the side of the output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310041199.1A CN116067204A (en) | 2023-01-13 | 2023-01-13 | Microchannel heat exchange device with controllable heat exchange efficiency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310041199.1A CN116067204A (en) | 2023-01-13 | 2023-01-13 | Microchannel heat exchange device with controllable heat exchange efficiency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117895703A (en) * | 2024-03-15 | 2024-04-16 | 常州天安尼康达电器有限公司 | Alternating current motor with intelligent adjustable heat dissipation function |
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2023
- 2023-01-13 CN CN202310041199.1A patent/CN116067204A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117895703A (en) * | 2024-03-15 | 2024-04-16 | 常州天安尼康达电器有限公司 | Alternating current motor with intelligent adjustable heat dissipation function |
| CN117895703B (en) * | 2024-03-15 | 2024-05-14 | 常州天安尼康达电器有限公司 | Alternating current motor with intelligent adjustable heat dissipation function |
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