Heat exchanger and heat exchange method

Abstract

The invention relates to the technical field of heat exchangers, and discloses a heat exchanger and a heat exchange method.The heat exchanger comprises a box assembly, a heat exchange assembly is arranged in the box assembly, a sweeping assembly is arranged on the heat exchange assembly, and the heat exchange assembly is provided with a cold air inlet, a hot air inlet, a cold air outlet and a hot air outlet; the cold air inlet and the hot air inlet are connected with a cold air inlet pipe and a hot air inlet pipe respectively, the cold air outlet and the hot air outlet are provided with a cold air outlet pipe and a hot air outlet pipe respectively, buffer assemblies are evenly arranged on the side, close to the cold air inlet pipe, of the heat exchange assembly, one end of the cold air inlet pipe is connected with a windward assembly, and an adjusting assembly is arranged on the windward assembly. According to the air conditioner, the adjusting assembly is arranged, the orientation angle of the windward assembly is adjusted according to the wind direction in the current aircraft running process, the windward assembly is located at the optimal angle, and it is guaranteed that the maximum heat exchange efficiency can be achieved after cold air enters the air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to a heat exchanger and a heat exchange method. Background Art

[0002] Aircraft heat exchangers, as a vital passive heat transfer device in aircraft systems, play a key role in regulating the temperature and humidity inside the aircraft. They are devices that realize heat transfer between two or more fluids at different temperatures, so that heat is transferred from a fluid with a higher temperature to a fluid with a lower temperature to meet the temperature requirements of various aircraft systems. Among them, plate-fin heat exchangers are widely used in the aviation field due to their many advantages such as high heat exchange efficiency, compact structure and light weight.

[0003] The Chinese invention patent with application number 202110742410.3 proposes a heat exchanger core, a heat exchanger and a heat exchange method, wherein the heat exchanger includes a refrigerant / air heat exchanger core and an air / air heat exchanger core, and each heat exchange core has at least one refrigerant channel and a first air channel and a second air channel between plates arranged side by side. The refrigerant channel is formed by an extruded profile with a web, a partition, a first flange, a second flange and a boss. The ends of the refrigerant channel are surrounded by outer plates, and the alternating partition portions are shortened to form a first interval, thereby forming a one-way serpentine path for the refrigerant to pass through. The present invention is used for heat exchange of compressed air, and has the characteristics of high heat exchange efficiency and compact structure.

[0004] However, when this prior art is applied to the interior of an aircraft, the following problems exist: during the process from takeoff to landing, the external wind direction changes in real time, causing different angles of entry of cold air into the air-conditioning duct, resulting in a large loss of cold air and reduced heat exchange efficiency; in addition, the dust adsorbed on the heat exchanger and the residual water vapor cannot be removed, causing the heat exchanger to freeze when entering low temperature and high altitude, and the internal sealing strip will also be deformed, resulting in the risk of air leakage, thereby reducing the heat exchange efficiency of the heat exchanger.

[0005] Therefore, it is necessary to solve the above problems by a heat exchanger. Summary of the invention

[0006] The object of the present invention is to provide a heat exchanger and a heat exchange method to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heat exchanger, comprising a box assembly, a heat exchange assembly is arranged inside the box assembly, a cleaning assembly is arranged on the heat exchange assembly, cold and hot air inlets and cold and hot air outlets are arranged on the heat exchange assembly, the cold and hot air inlets are connected to a cold air inlet pipe and a hot air inlet pipe, respectively, the cold and hot air outlets are provided with a cold air outlet pipe and a hot air outlet pipe, respectively, a buffer assembly is evenly arranged on the side of the heat exchange assembly close to the cold air inlet pipe, one end of the cold air inlet pipe is connected to a windward assembly, and an adjustment assembly is arranged on the windward assembly; The cleaning assembly comprises a scraper and a cleaning brush, a connecting plate is provided on one side of the scraper close to the cleaning brush, and the cleaning brush is rotatably connected to the connecting plate through a torsion spring; The adjustment assembly includes a telescopic part and a rotating frame, the telescopic part includes a fixed block, the fixed block is rotatably connected to a connecting block, the end of the connecting block is fixedly connected to a telescopic cylinder, and the end of the telescopic cylinder away from the connecting block is rotatably connected to a positioning block.

[0008] Preferably, the adjustment component is arranged on a support plate, the support plate is arranged on the aircraft cabin shell, and the windward component is arranged through the rotating frame; The positioning block is fixedly arranged on the rotating frame, the top and the bottom of the rotating frame are provided with a rotating motor, and the rotating motor is fixedly arranged on the supporting plate.

[0009] Preferably, the cleaning assembly also includes a transverse plate, fixed plates are arranged at intervals on the transverse plate, scrapers are rotatably arranged between adjacent fixed plates, locking assemblies are arranged on the fixed plates, limiting plates are fixedly arranged at both ends of the transverse plate, rollers are rotatably arranged between the limiting plates, a driving motor is fixedly connected to one side of the roller, a groove is radially provided on the roller, a track is arranged on the heat exchange assembly, and the track fits with the groove.

[0010] Preferably, the buffer assembly includes a permanent magnet, one side of the permanent magnet is fixedly set on the heat exchange assembly, a movable column is fixedly set on the other side of the permanent magnet, an electromagnet is movably set on the movable column, the electromagnet is fixedly set on a right-angle plate, the right-angle plate is fixedly set on the box assembly, a buffer spring is fixedly set between the permanent magnet and the electromagnet, the buffer spring is set on the outside of the movable column, and the movable column passes through the electromagnet and the right-angle plate.

[0011] Preferably, the box assembly includes a heat exchange box, which is symmetrically provided with pillars, and an upper guide rod and a lower guide rod are fixedly provided between the pillars in the vertical direction in sequence, and the heat exchange assembly is movably provided on the upper guide rod and the lower guide rod, and ventilation grilles are provided on both sides of the heat exchange box, and the cold air inlet pipe, hot air inlet pipe, cold air outlet pipe and hot air outlet pipe all extend through one side of the heat exchange box.

[0012] Preferably, the windward component comprises a hose, one end of which is fixedly connected to the cold air intake pipe, and the other end of which is fixedly connected to a straight pipe, and one end of the straight pipe away from the hose is fixedly connected to a collecting tube.

[0013] A heat exchange method for a heat exchanger comprises the following steps: Step 1: From takeoff to landing, the current wind direction is identified by the sensor on the aircraft, and the control adjustment component is used to adjust the direction of the windward component towards the wind direction in real time, so that the cold air can smoothly enter the cold air intake pipe to reduce the loss; Step 2: Cold air enters from the windward component, flows into the heat exchange component through the cold air inlet pipe, and then is discharged to the outside through the cold air outlet pipe; Step 3: The hot air enters the heat exchange component from the hot air inlet pipe, exchanges heat with the cold air, and then is discharged from the hot air outlet pipe into the aircraft cabin for use; Step 4: Scrape off the dust and water vapor on the heat exchange components by controlling the reciprocating movement of the cleaning component to prevent ice formation.

[0014] Technical effects and advantages of the present invention: 1. In the present invention, by setting an adjustment component, the orientation angle of the windward component is adjusted according to the wind direction during the current flight of the aircraft, so that the windward component is at the optimal angle to ensure that the maximum heat exchange efficiency can be achieved after the cold air enters; by setting a cleaning component, the surface of the heat exchange component is scraped to remove dust and water vapor on the surface of the heat exchange component to prevent the water vapor from condensing into ice and affecting the heat exchange effect; by setting a buffer component, the vibration generated by the heat exchange component during the flight of the aircraft is damped.

[0015] 2. In the present invention, according to the wind direction detected in real time, the vertical angle of the windward component is adjusted by setting a telescopic part, and the horizontal angle of the windward component is adjusted by setting a rotating frame, so as to ensure that the windward component is opposite to the wind direction, so that the cold air can enter parallel to the windward component, avoiding the angle deviation of the cold air when entering, resulting in loss, thereby affecting the efficiency of the subsequent heat exchange in the heat exchange component.

[0016] 3. In the present invention, a scraper and a cleaning brush are provided to scrape off dust and water vapor on the surface of the sealing strip, so as to prevent water vapor from condensing into ice in a low-temperature environment, affecting the heat exchange efficiency, and preventing dust particles from corroding the heat exchange component and causing air leakage; at the same time, the leakage points that have already occurred can be detected, thereby increasing the tightness between the heat exchange plates and eliminating or slowing down the leakage phenomenon; by detecting whether the scraper and the cleaning brush rotate during the movement, it is determined whether the sealing strip in the current heat exchange component is deformed, thereby avoiding the situation where leakage occurs due to poor sealing, and at the same time, assisting the staff to perform rapid maintenance.

[0017] 4. In the present invention, the external environment temperature of the current aircraft is determined by real-time detection of the hot air temperature and hot air output after heat exchange. At the same time, it is determined that there are many water droplets hanging on the wall inside the hot air cavity, blocking the gas circulation, resulting in a decrease in hot air output. The buffer component is controlled to knock and vibrate the heat exchange component, so that the moisture in the hot air cavity falls quickly and the hot air cavity is unblocked. At the same time, the direction of the windward component is changed by adjusting the component, thereby reducing the amount of cold air entering, thereby ensuring the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the overall component of the present invention; Figure 3 This is a schematic diagram of the internal structure of the overall component of the present invention from another angle; Figure 4 It is a schematic diagram of the structure of the adjustment components of the present invention; Figure 5 for Figure 4 The enlarged structural diagram of part A in the middle; Figure 6 This is a schematic diagram of the cleaning assembly structure of the present invention; Figure 7 This is a schematic diagram of the explosion structure of the cleaning assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the buffer assembly of the present invention; Fig. 9 It is a schematic diagram of the positional relationship among the box assembly, the heat exchange assembly and the windward assembly of the present invention.

[0019] In the figure: 1. Box assembly; 101. Heat exchange box; 102. Pillar; 103. Lower guide rod; 104. Upper guide rod; 105. Ventilation grille; 2. Heat exchange assembly; 201. Heat exchange plate; 202. Sealing strip; 203. Fixed pressing plate; 204. Movable pressing plate; 205. Fastening screw; 3. Cleaning assembly; 301. Scraper; 302. Cleaning brush; 303. Connecting plate; 304. Horizontal plate; 305. Fixed plate; 306. Limiting plate; 307. Roller; 308. Driving motor; 309. 09. Track; 4. Buffer assembly; 401. Permanent magnet; 402. Moving column; 403. Buffer spring; 404. Right-angle plate; 405. Electromagnet; 5. Cold air inlet pipe; 6. Windward assembly; 601. Hose; 602. Straight pipe; 603. Collecting tube; 7. Adjustment assembly; 701. Fixed block; 702. Connecting block; 703. Telescopic cylinder; 704. Positioning block; 705. Rotating frame; 706. Rotating motor; 8. Cold air outlet pipe; 9. Hot air inlet pipe; 10. Hot air outlet pipe; 11. Support plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] The heat exchange component 2 in the present invention takes a plate heat exchanger as an example. The plate heat exchanger is mainly composed of plates. The plates have a special corrugated shape, so that the fluid can pass between the inner and outer sides, thereby realizing heat exchange. In addition, the heat exchange component 2 of the present invention can also adopt a plate-fin heat exchanger. The plate-fin heat exchanger is usually composed of partitions, fins, seals, guide vanes, etc. The fins not only increase the heat exchange area, but also make the flow of the fluid more mixed, thereby accelerating the heat transfer rate and further improving the heat exchange efficiency. The plate-fin heat exchanger is a heat exchange equipment with the advantages of high efficiency, compactness and strong adaptability. It has been widely used in aerospace, refrigeration and air conditioning, automobile manufacturing and other fields. Especially in heat exchange occasions that require high efficiency, compactness and strong adaptability, the plate-fin heat exchanger plays an irreplaceable role.

[0022] In order to solve the problem that the external wind direction changes in real time during the process of takeoff and landing of the aircraft, the entry angle of the cold air into the air-conditioning duct is different, resulting in a large loss of cold air, resulting in a decrease in heat exchange efficiency, and the dust and residual water vapor adsorbed on the heat exchanger cannot be removed, resulting in icing of the heat exchanger when entering low temperature and high altitude, thereby reducing the heat exchange efficiency of the heat exchanger, embodiment 1 is proposed.

[0023] Embodiment 1: like Figures 1 to 9 As shown, the present invention discloses a heat exchanger, including a box assembly 1, a heat exchange assembly 2 is arranged inside the box assembly 1, a cleaning assembly 3 is arranged on the heat exchange assembly 2, cold and hot air inlets and cold and hot air outlets are respectively arranged on the heat exchange assembly 2, the cold and hot air inlets are respectively connected to a cold air inlet pipe 5 and a hot air inlet pipe 9, the cold and hot air outlets are respectively arranged to a cold air outlet pipe 8 and a hot air outlet pipe 10, a buffer assembly 4 is evenly arranged on the side of the heat exchange assembly 2 close to the cold air inlet pipe 5, one end of the cold air inlet pipe 5 is connected to a windward assembly 6, and an adjustment assembly 7 is arranged on the windward assembly 6; the adjustment assembly 7 is arranged on a support plate 11, and the support plate 11 is arranged on the aircraft cabin shell.

[0024] By setting the adjustment component 7, the orientation angle of the windward component 6 is adjusted according to the wind direction during the current flight of the aircraft, so that the windward component 6 is located at the optimal angle, ensuring that the maximum heat exchange efficiency can be achieved after the cold air enters; by setting the cleaning component 3, the surface of the heat exchange component 2 is scraped to remove dust and water vapor on the surface of the heat exchange component 2 to prevent the water vapor from condensing into ice and affecting the heat exchange effect; by setting the buffer component 4, the vibration generated by the heat exchange component 2 during the flight of the aircraft is damped.

[0025] As the aircraft takes off, lands, turns, and increases or decreases in altitude during flight, the wind direction will change in real time during the above actions, causing the incoming direction of the cold air to form an angle with the cold air duct. Compared with the cold air entering toward the cold air duct, the amount of cold air entering at an angle with the cold air duct will be reduced, and some of the cold air will be lost due to rebound or collision with the duct, thereby greatly reducing the heat exchange efficiency.

[0026] By setting the adjustment component 7 according to the wind direction, the orientation angle of the windward component 6 is adjusted in real time, such as Figure 4-Figure 5 As shown, the adjustment component 7 includes a telescopic part and a rotating frame 705, the fixed block 701 is fixedly set on the straight tube 602 and is symmetrically arranged along the radial direction, and at least two fixed blocks 701 are arranged on the same side, the telescopic part includes a fixed block 701, and the fixed block 701 is rotatably connected with a connecting block 702, the end of the connecting block 702 is fixedly connected with a telescopic cylinder 703, and the end of the telescopic cylinder 703 away from the connecting block 702 is rotatably connected with a positioning block 704; the windward component 6 is set through the rotating frame 705, and the straight tube 602 is located in the rotating frame 705; the positioning block 704 is fixedly set on the rotating frame 705, and the top and bottom of the rotating frame 705 are provided with a rotating motor 706, and the rotating motor 706 is fixedly set on the support plate 11.

[0027] When in use, the current wind direction is detected according to the aircraft's own sensor, and the signal is transmitted to the central control module. The central control module issues instructions to the adjustment component 7, and the windward component 6 needs to be adjusted to the corresponding angle. If vertical adjustment is required, the adjustment steps are: control the output end of the upper telescopic cylinder 703 to extend or shorten the corresponding telescopic amount, and the output end of the lower telescopic cylinder 703 outputs the telescopic amount opposite to the telescopic direction of the upper telescopic cylinder 703, thereby adjusting the vertical angle of the straight tube 602; if horizontal adjustment is required, the adjustment steps are: control the rotating motor 706 to drive the rotating frame 705 to rotate, thereby driving the straight tube 602 located therein to rotate horizontally, and completing the adjustment of the vertical angle of the straight tube 602.

[0028] According to the wind direction detected in real time, the vertical angle of the windward component 6 is adjusted by setting the telescopic part, and the horizontal angle of the windward component 6 is adjusted by setting the rotating frame 705, so as to ensure that the windward component 6 is opposite to the wind direction, so that the cold air can enter parallel to the windward component 6, avoiding the angle deviation of the cold air when entering, resulting in loss, thereby affecting the efficiency of the subsequent heat exchange in the heat exchange component 2.

[0029] During the flight of an airplane, the aircraft generally flies at an altitude in the troposphere, where the water vapor content is very high and contains a large amount of dust particles. The water vapor and dust particles will enter the interior of the heat exchanger through the gaps in the aircraft cabin shell, causing dust or water vapor to adhere to the surface of the heat exchange component 2, which is prone to ice formation in the low temperature environment of the troposphere, affecting the heat exchange efficiency. At the same time, the dust particles are fixed on the heat exchange component 2 by the ice layer, which is prone to corrode the heat exchange component 2, causing air leakage in the heat exchange component 2, etc.

[0030] In order to solve the above technical problems, a cleaning component 3 is provided to regularly scrape the outer surface of the heat exchange component 2 to remove impurities such as water vapor and dust. Figure 6-Figure 7 As shown, the cleaning component 3 includes a scraper 301 and a cleaning brush 302. A connecting plate 303 is provided on one side of the scraper 301 close to the cleaning brush 302, and the cleaning brush 302 is rotatably connected to the connecting plate 303 through a torsion spring; the cleaning component 3 also includes a transverse plate 304, on which fixed plates 305 are arranged at intervals, and a scraper 301 is rotatably arranged between adjacent fixed plates 305, and the scraper 301 is rotatably connected between the fixed plates 305 through a torsion spring, and a locking component is arranged on the fixed plate 305 for limiting the rotation of the scraper 301, and limit plates 306 are fixedly provided at both ends of the transverse plate 304, and a roller 307 is rotatably provided between the limit plates 306, and a driving motor 308 is fixedly connected to one side of the roller 307, and the roller 307 is provided with a groove in the radial direction, and a track 309 is provided on the heat exchange component 2, and the track 309 fits with the groove.

[0031] When in use, first control the locking assembly to open, lock the scraper 301, and limit its rotation. Then control the drive motor 308 to rotate, drive the roller 307 to move along the track 309, thereby driving the transverse plate 304 to move along the track 309, and then drive the scraper 301 to clean the dust and water vapor on the surface of the sealing strip 202. At the same time, the fixed plate 305 cleans the surface of the heat exchange plate 201. After the scraper 301 is cleaned, residual dust may be left, which is then swept away by the cleaning brush 302.

[0032] During the flight of the aircraft, as the flight altitude changes, the external temperature changes greatly, and the sealing strip 202 may deform, for example, it may become dented after hardening at low temperature, and expand after softening at high temperature, resulting in poor sealing of the sealing strip 202 and air leakage in the heat exchanger, which in turn leads to a decrease in heat exchange efficiency.

[0033] In order to solve the above technical problems, before the aircraft takes off and after landing, the locking assembly is controlled to close, the lock of the scraper 301 is released, and the driving motor 308 is controlled to drive the transverse plate 304 to move along the track 309 through the roller 307, thereby driving the scraper 301 to move. During the movement, according to the changes in the compression amount of the torsion spring on the scraper 301 and the torsion spring on the cleaning brush 302, it can be identified whether the current sealing strip 202 is deformed. Specifically: during the process of the scraper 301 completing a movement along the track 309, the compression amount of the torsion spring on the scraper 301 and the cleaning brush 302 does not change, indicating that the current sealing strip 202 has a smooth surface and is not deformed; when the scraper 301 and the cleaning brush 302 are When the compression of the torsion spring decreases, it means that the scraper 301 and the cleaning brush 302 pass through the recessed position on the sealing strip 202, and the scraper 301 and the cleaning brush 302 rotate toward the sealing strip 202, thereby causing the compression of the torsion spring to decrease; when the compression of the torsion spring on the scraper 301 and the cleaning brush 302 increases, it means that the scraper 301 and the cleaning brush 302 pass through the raised position on the sealing strip 202, and the scraper 301 and the cleaning brush 302 rotate away from the sealing strip 202, thereby causing the compression of the torsion spring to increase; when deformation of the sealing strip 202 is detected, a signal is transmitted to the central control module, and the central control module prompts the staff that the heat exchanger needs to be inspected.

[0034] By setting up a scraper 301 and a cleaning brush 302, dust and water vapor on the surface of the sealing strip 202 are scraped off to prevent water vapor from condensing into ice in a low-temperature environment, affecting the heat exchange efficiency, and preventing dust particles from corroding the heat exchange component 2 and causing air leakage in the heat exchange component 2; by detecting whether the scraper 301 and the cleaning brush 302 rotate during the movement, it is determined whether the sealing strip 202 in the current heat exchange component 2 is deformed, thereby avoiding leakage caused by poor sealing, and at the same time, assisting the staff to perform rapid maintenance.

[0035] During the flight of the aircraft, the airflow will cause turbulence, and the heat exchanger will also vibrate due to the turbulence, so the buffer component 4 is provided to reduce shock and buffer. Figure 8 As shown, the buffer component 4 includes a permanent magnet 401, one side of the permanent magnet 401 is fixedly set on the heat exchange component 2, the permanent magnet 401 is fixedly set on the fixed clamping plate 203, the buffer component 4 is set at the four corners of the fixed clamping plate 203, and a moving column 402 is fixedly set on the other side of the permanent magnet 401. An electromagnet 405 is movably set on the moving column 402, and the electromagnet 405 is fixedly set on the right-angle plate 404. The right-angle plate 404 is fixedly set on the box assembly 1, and the right-angle plate 404 is fixedly set on the heat exchange box 101. A buffer spring 403 is fixedly set between the permanent magnet 401 and the electromagnet 405, and the buffer spring 403 is set on the outside of the moving column 402, and the moving column 402 passes through the electromagnet 405 and the right-angle plate 404. When in use, the electromagnet 405 is not energized. When the heat exchange component 2 is vibrated, the heat exchange component 2 pushes the movable column 402 to move back and forth in the electromagnet 405 and the right-angle plate 404 through the permanent magnet 401. With the assistance of the buffer spring 403, the vibration is damped to reduce the vibration of the heat exchange component 2.

[0036] like Fig. 9As shown, the box assembly 1 includes a heat exchange box 101, and the heat exchange box 101 is symmetrically provided with pillars 102. An upper guide rod 104 and a lower guide rod 103 are fixedly provided between the pillars 102 in the vertical direction. The heat exchange component 2 is movably provided on the upper guide rod 104 and the lower guide rod 103. The fixed pressing plate 203 and the movable pressing plate 204 are provided with notches at the top and bottom, and the notches are respectively matched with the upper guide rod 104 and the lower guide rod 103, so that the heat exchange component 2 can reciprocate along the upper guide rod 104 and the lower guide rod 103. Ventilation grilles 105 are provided on both sides of the heat exchange box 101. The cold air inlet pipe 5, the hot air inlet pipe 9, the cold air outlet pipe 8 and the hot air outlet pipe 10 all pass through the heat exchange box 101. One side of the heat box 101 extends out; the windward component 6 is used to receive external cold air. The windward component 6 includes a hose 601. The hose 601 can ensure that when the windward component 6 adjusts its direction, the cold air can also smoothly enter the heat exchange component 2 for heat exchange. One end of the hose 601 is fixedly connected to the cold air inlet pipe 5, and the other end is fixedly connected to a straight pipe 602. The end of the straight pipe 602 away from the hose 601 is fixedly connected to a collecting tube 603. A fan is arranged in the collecting tube 603 for inhaling cold air. The flow direction of the cold air is: from the collecting tube 603 into the straight tube 602, and then passes through the hose 601, the cold air inlet pipe 5, and the cold air cavity, and finally discharged from the cold air outlet pipe 8.

[0037] like Fig. 9 As shown, the heat exchange assembly 2 includes a heat exchange plate 201, a fixed pressing plate 203 and a movable pressing plate 204. A sealing strip 202 is provided on one side of the heat exchange plate 201. The heat exchange plates 201 are arranged between the fixed pressing plate 203 and the movable pressing plate 204 in close contact with each other. A fastening screw 205 is provided on the fixed pressing plate 203 and the movable pressing plate 204. By rotating the fastening screw 205, the movable pressing plate 204 moves toward the fixed pressing plate 203, thereby shortening the distance between the movable pressing plate 204 and the fixed pressing plate 203. , so that the heat exchange plates 201 fit tightly together; the heat exchange plate 201 has a strip side and a back side, the side provided with the sealing strip 202 is the strip side, and the other side is the back side, the sealing strip 202 protrudes from the heat exchange plate 201, and the strip side of any heat exchange plate 201 fits with the back side of the adjacent heat exchange plate 201 to form a cavity, and the cavities are alternately set as cold air cavities and hot air cavities, and the flow direction of the hot air is: entering from the hot air inlet pipe 9, passing through the hot air cavity, and after heat exchange with the cold air cavity, it is discharged from the hot air outlet pipe 10 to be provided to the cabin for use.

[0038] The working principle of the present invention is as follows: first, check whether the sealing strip 202 is deformed. Before the aircraft takes off and after landing, control the locking assembly to close, release the lock on the scraper 301, and control the drive motor 308 to drive the transverse plate 304 to move along the track 309 through the roller 307, thereby driving the scraper 301 to move. During the movement, according to the changes in the compression amount of the torsion spring on the scraper 301 and the torsion spring on the cleaning brush 302, it can be identified whether the current sealing strip 202 is deformed. Specifically, when the scraper 301 completes a movement along the track 309, the compression amount of the torsion spring on the scraper 301 and the cleaning brush 302 does not change, indicating that the current sealing strip 202 has a smooth surface and is not deformed; when the scraper 301 is When the compression amount of the torsion spring on the scraper 301 and the cleaning brush 302 decreases, it means that the scraper 301 and the cleaning brush 302 pass through the recessed position on the sealing strip 202, and the scraper 301 and the cleaning brush 302 rotate toward the sealing strip 202, thereby causing the compression amount of the torsion spring to decrease; when the compression amount of the torsion spring on the scraper 301 and the cleaning brush 302 increases, it means that the scraper 301 and the cleaning brush 302 pass through the raised position on the sealing strip 202, and the scraper 301 and the cleaning brush 302 rotate away from the sealing strip 202, thereby causing the compression amount of the torsion spring to increase; when deformation of the sealing strip 202 is detected, a signal is transmitted to the central control module, and the central control module prompts the staff that the heat exchanger needs to be inspected.

[0039] Secondly, adjust the direction of the windward component 6, detect the current wind direction according to the aircraft's own sensor, and transmit the signal to the central control module. The central control module issues a command to the adjustment component 7, requiring the windward component 6 to be adjusted to the corresponding angle. If vertical adjustment is required, the adjustment steps are as follows: control the output end of the upper telescopic cylinder 703 to extend or shorten the corresponding telescopic amount, and the output end of the lower telescopic cylinder 703 outputs the telescopic amount opposite to the telescopic direction of the upper telescopic cylinder 703, thereby adjusting the vertical angle of the straight tube 602; if horizontal adjustment is required, the adjustment steps are as follows: control the rotating motor 706 to drive the rotating frame 705 to rotate, thereby driving the straight tube 602 located therein to rotate horizontally, completing the adjustment of the vertical angle of the straight tube 602, so that the collecting tube 603 faces the wind direction.

[0040] Then, the heat exchange component 2 performs heat exchange, and the outside cold air enters the straight pipe 602 from the collecting tube 603, passes through the hose 601, the cold air inlet pipe 5, the cold air cavity in turn, and is finally discharged from the cold air outlet pipe 8. The hot air enters from the hot air inlet pipe 9, passes through the hot air cavity, exchanges heat with the cold air cavity, and is discharged from the hot air outlet pipe 10 to be provided to the cabin. During the heat exchange process, the water vapor and dust outside the heat exchange component 2 are intermittently cleaned, specifically: the locking component is controlled to open, the scraper 301 is locked to limit its rotation, and then the driving motor 308 is controlled to rotate, driving the roller 307 to move along the track 309, thereby driving the transverse plate 304 to move along the track 309, and then driving the scraper 301 to clean the dust and water vapor on the surface of the sealing strip 202. At the same time, the fixed plate 305 cleans the surface of the heat exchange plate 201, and the cleaning brush 302 removes the residual dust.

[0041] Based on the technical solution of the above-mentioned embodiment 1, due to the different flight altitudes of the aircraft, the temperature of the external cold air is different. The higher the flight altitude, the lower the temperature of the external cold air. When the aircraft flies to a high altitude, the temperature of the external air is low, the heat exchange effect is increased, and the hot air is cooled quickly. The moisture contained in the hot air may condense into liquid water droplets due to contact with the low temperature, and hang inside the hot air cavity, reducing the space of the hot air cavity, increasing the fluid resistance, resulting in a decrease in the amount of hot air passing through, thereby affecting the heat exchange efficiency. At the same time, the temperature required in the aircraft cabin is stable within a constant range. The low temperature of the cold air will cause the hot air to cool too much, thereby being lower than the temperature required for the cabin, resulting in excessive heat exchange, affecting the use of the aircraft cabin; in addition, although it is possible to judge whether the sealing strip 202 is deformed before the aircraft takes off and after landing to prevent leakage, if there is leakage in the sealing strip 202 during the flight of the aircraft, it cannot be identified and judged; and then embodiment 2 is proposed to solve the above-mentioned technical problems.

[0042] Embodiment 2: like Fig. 9 As shown, flow sensors are respectively provided on the hot air inlet pipe 9 and the hot air outlet pipe 10 for detecting the loss of hot air, and a temperature sensor is provided on the hot air outlet pipe 10 for detecting whether the temperature of the hot air after heat exchange meets the required temperature of the cabin.

[0043] As the aircraft's flight altitude rises or falls, the temperature of the outside cold air changes accordingly. When the temperature sensor detects that the temperature of the hot air after heat exchange is lower than the temperature required by the cabin, and the flow sensor reading on the hot air inlet pipe 9 is greater than the flow sensor reading on the hot air outlet pipe 10, it means that the current cold air temperature is low, resulting in an excessively high degree of heat exchange of the hot air, which results in a low temperature of the hot air after heat exchange that does not meet the temperature required by the cabin. At the same time, the current amount of hot air entering is greater than the amount of hot air output, which indicates that there is a blockage in the flow of gas inside the current hot air cavity. , that is, there are many water droplets hanging on the wall of the hot gas cavity, which makes the passage space of the hot gas cavity smaller, resulting in a decrease in the hot gas output; at this time, the buffer component 4 is controlled to knock and vibrate the heat exchange component 2, so that the water in the hot gas cavity falls quickly and is discharged from the hot gas outlet pipe 10, specifically: control the electromagnet 405 to pass intermittent current, when the electromagnet 405 is energized, it generates magnetic attraction on the permanent magnet 401, thereby driving the heat exchange component 2 as a whole to move toward the direction of the electromagnet 405 through the fixed clamping plate 203, so that the buffer spring 403 is compressed and the electromagnet 405 is powered off, the buffer spring 403 will push the heat exchange component 2 to move away from the electromagnet 405 due to its own elastic force, so that the heat exchange component 2 can move back and forth quickly, so as to throw off the water droplets inside the hot gas cavity, dredge the passage space of the hot gas cavity, and make the hot gas output stably to ensure the heat exchange efficiency; at the same time, the direction of the windward component 6 is adjusted by the adjustment component 7, so as to reduce the amount of cold air entering. Specifically, according to the current direction of the windward component 6, the adjustment component 7 is controlled to drive the windward component 6 to adjust in the direction opposite to the current direction. For example, the current windward component 6 is horizontally offset to the left by 30° and vertically offset upward by 45°. At this time, the output end of the telescopic cylinder 703 of the telescopic part is controlled to extend and retract, so as to drive the straight pipe 602 to rotate downward. At the same time, the rotating motor 706 is controlled to drive the rotating frame 705 to rotate to the right, so as to drive the collecting tube 603 to gradually deviate from the angle towards the wind direction, thereby reducing the amount of cold air entering, thereby reducing the degree of heat exchange, so that the temperature of the hot gas after heat exchange meets the temperature requirement of the cabin.

[0044] By real-time detection of the hot air temperature and hot air output after heat exchange, the current external ambient temperature of the aircraft can be determined. At the same time, it can be determined that there are many water droplets hanging on the wall inside the hot air cavity, blocking the gas circulation, resulting in a decrease in hot air output. The buffer component 4 is controlled to knock and vibrate the heat exchange component 2, so that the moisture in the hot air cavity falls quickly and the hot air cavity is unblocked. At the same time, the direction of the windward component 6 is changed by adjusting the component 7, thereby reducing the amount of cold air entering, thereby ensuring the heat exchange efficiency.

[0045] When the cleaning component 3 is cleaning, the scraper 301 scrapes off the dust and water vapor adhered to the surface of the sealing strip 202, and the cleaning brush 302 cleans the residual dust. In the above process, when the compression of the torsion spring on the cleaning brush 302 increases, it represents the leakage point currently passing through the sealing strip 202. The gas leaked from the leakage point generates a blowing force on the cleaning brush 302, so that the cleaning brush 302 rotates in the direction away from the sealing strip 202, thereby increasing the compression of the torsion spring. At this time, the fastening screw 205 is controlled to rotate so that the movable clamping plate 204 continues to approach the fixed clamping plate 203, increasing the tightness between the heat exchange plates 201, thereby eliminating or slowing down the leakage phenomenon, ensuring the heat exchange efficiency, and reducing the loss. At the same time, the signal is transmitted to the central control module to remind the staff to detect the leakage point after the aircraft lands; if there is no leakage point, the cleaning brush 302 will not rotate, and the compression of the torsion spring remains unchanged when the cleaning is completed.

[0046] Embodiment three: The present invention also provides a heat exchange method of a heat exchanger, comprising the following steps: Step 1: During the process from takeoff to landing, the current wind direction is identified by the sensor on the aircraft, and the control adjustment component 7 adjusts the direction of the windward component 6 towards the wind direction in real time, so that the cold air can smoothly enter the cold air intake pipe 5 to reduce the loss.

[0047] Step 2: Cold air enters from the windward component 6, flows into the heat exchange component 2 through the cold air inlet pipe 5, and is then discharged to the outside through the cold air outlet pipe 8.

[0048] Step 3: The hot air enters the heat exchange assembly 2 from the hot air inlet pipe 9, exchanges heat with the cold air, and is then discharged from the hot air outlet pipe 10 into the aircraft cabin for use.

[0049] Step 4: Control the cleaning component 3 to move back and forth to scrape off the dust and water vapor on the heat exchange component 2 to prevent ice formation.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat exchanger, characterized in that: The invention comprises a box assembly (1), wherein a heat exchange assembly (2) is arranged inside the box assembly (1), a cleaning assembly (3) is arranged on the heat exchange assembly (2), cold and hot air inlets and cold and hot air outlets are arranged on the heat exchange assembly (2), the cold and hot air inlets are connected to a cold air inlet pipe (5) and a hot air inlet pipe (9), respectively, the cold and hot air outlets are provided with a cold air outlet pipe (8) and a hot air outlet pipe (10), respectively, a buffer assembly (4) is evenly arranged on one side of the heat exchange assembly (2) close to the cold air inlet pipe (5), one end of the cold air inlet pipe (5) is connected to a windward assembly (6), and an adjustment assembly (7) is arranged on the windward assembly (6); The cleaning assembly (3) comprises a scraper (301) and a cleaning brush (302); a connecting plate (303) is provided on one side of the scraper (301) close to the cleaning brush (302); and the cleaning brush (302) is rotatably connected to the connecting plate (303) via a torsion spring; The adjustment assembly (7) comprises a telescopic portion and a rotating frame (705); the telescopic portion comprises a fixed block (701); a connecting block (702) is rotatably connected to the fixed block (701); a telescopic cylinder (703) is fixedly connected to the end of the connecting block (702); and a positioning block (704) is rotatably connected to one end of the telescopic cylinder (703) away from the connecting block (702).

2. A heat exchanger according to claim 1, characterized in that: The adjustment component (7) is arranged on a support plate (11), the support plate (11) is arranged on an aircraft cabin shell, and the windward component (6) is arranged to pass through the rotating frame (705); The positioning block (704) is fixedly arranged on the rotating frame (705), the top and bottom of the rotating frame (705) are provided with a rotating motor (706), and the rotating motor (706) is fixedly arranged on the supporting plate (11).

3. A heat exchanger according to claim 1, characterized in that: The cleaning assembly (3) further comprises a transverse plate (304), fixed plates (305) are arranged at intervals on the transverse plate (304), a scraper (301) is rotatably arranged between adjacent fixed plates (305), a locking assembly is arranged on the fixed plate (305), limiting plates (306) are fixedly arranged at both ends of the transverse plate (304), a roller (307) is rotatably arranged between the limiting plates (306), a driving motor (308) is fixedly connected to one side of the roller (307), a groove is radially provided on the roller (307), and a track (309) is arranged on the heat exchange assembly (2), and the track (309) fits with the groove.

4. A heat exchanger according to claim 1, characterized in that: The buffer component (4) comprises a permanent magnet (401), one side of the permanent magnet (401) is fixedly arranged on the heat exchange component (2), the other side of the permanent magnet (401) is fixedly arranged with a movable column (402), the movable column (402) is movably arranged with an electromagnet (405), the electromagnet (405) is fixedly arranged on a right-angle plate (404), the right-angle plate (404) is fixedly arranged on the box component (1), a buffer spring (403) is fixedly arranged between the permanent magnet (401) and the electromagnet (405), the buffer spring (403) is arranged outside the movable column (402), and the movable column (402) passes through the electromagnet (405) and the right-angle plate (404).

5. A heat exchanger according to claim 1, characterized in that: The box assembly (1) comprises a heat exchange box (101), the heat exchange box (101) being symmetrically provided with pillars (102), an upper guide rod (104) and a lower guide rod (103) being fixedly provided between the pillars (102) in the vertical direction in sequence, the heat exchange assembly (2) being movably provided on the upper guide rod (104) and the lower guide rod (103), ventilation grilles (105) being provided on both sides of the heat exchange box (101), and the cold air inlet pipe (5), the hot air inlet pipe (9), the cold air outlet pipe (8) and the hot air outlet pipe (10) all extending through one side of the heat exchange box (101).

6. A heat exchanger according to claim 1, characterized in that: The windward component (6) comprises a hose (601), one end of the hose (601) is fixedly connected to the cold air intake pipe (5), the other end is fixedly connected to a straight pipe (602), and the end of the straight pipe (602) away from the hose (601) is fixedly connected to a collection tube (603).

7. A heat exchange method for a heat exchanger according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: During the process from take-off to landing of the aircraft, the current wind direction is identified by a sensor on the aircraft, and the control adjustment component (7) is used to adjust the direction of the windward component (6) toward the wind direction in real time, so that the cold air can smoothly enter the cold air intake pipe (5) to reduce losses; Step 2: cold air enters from the windward component (6), flows into the heat exchange component (2) through the cold air inlet pipe (5), and is then discharged to the outside through the cold air outlet pipe (8); Step 3: The hot air enters the heat exchange component (2) from the hot air inlet pipe (9), exchanges heat with the cold air, and is then discharged from the hot air outlet pipe (10) into the aircraft cabin for use; Step 4: Control the cleaning component (3) to move back and forth to scrape away dust and water vapor on the heat exchange component (2) to prevent ice from forming.

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