Heat exchanger and heat exchange method

Abstract

The application relates to the technical field of heat exchangers, and discloses a heat exchanger and a heat exchange method, which comprise a box assembly, the inside of the box assembly is provided with a heat exchange assembly, the heat exchange assembly is provided with a cleaning assembly, the heat exchange assembly is respectively provided with cold and hot air inlets and cold and hot air outlets, the cold and hot air inlets are respectively connected with cold and hot air inlets, the cold and hot air outlets are respectively provided with cold and hot air outlets, buffer assemblies are uniformly 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 with a windward assembly, and the windward assembly is provided with an adjusting assembly; in the application, the orientation angle of the windward assembly is adjusted according to the wind direction in the current aircraft driving process through the adjusting assembly, so that the windward assembly is located at the optimal angle, and the maximum heat exchange efficiency can be realized after the cold air enters.

Description

TECHNICAL FIELD

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

[0002] The aircraft heat exchanger, as a kind of passive heat transfer equipment in the aircraft system, plays a key role in regulating the temperature and humidity of the aircraft interior, which is a kind of equipment for realizing heat transfer between two or more than two fluids at different temperatures, so that heat is transferred from the fluid with higher temperature to the fluid with lower temperature to meet the temperature requirements of each system of the aircraft. Among them, the plate-fin heat exchanger is widely used in the aviation field due to its high heat exchange efficiency, compact structure, light weight and many other advantages.

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

[0004] However, when the existing technology is applied to the interior of the aircraft, the following problems exist: During the process of taking off to landing of the aircraft, the wind direction of the outside changes in real time, so that the entering angle of the cold air entering into the cold air duct is not the same, which causes a large loss of the cold air, resulting in a decrease in heat exchange efficiency. In addition, the dust adsorbed on the heat exchanger and the residual water vapor cannot be removed, which causes the heat exchanger to freeze when entering the low-temperature high-altitude, and the sealing strip inside the heat exchanger also deforms, resulting in the problem of air leakage hidden danger, 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

[0006] The purpose of the present application is to provide a heat exchanger and a heat exchange method to solve the problems raised in the background.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a heat exchanger, comprising a box assembly, the inside of the box assembly is provided with a heat exchange assembly, the heat exchange assembly is provided with a cleaning assembly, the heat exchange assembly is respectively provided with cold and hot air inlets and cold and hot air outlets, the cold and hot air inlets are respectively connected with cold and hot air inlets, the cold and hot air outlets are respectively provided with cold and hot air outlets, the heat exchange assembly is uniformly provided with a buffer assembly on the side close to the cold air inlet pipe, one end of the cold air inlet pipe is connected with a windward component, the windward component is provided with an adjusting component;

[0008] The cleaning assembly comprises a scraper and a cleaning brush, the side close to the cleaning brush of the scraper is provided with a connecting plate, and the cleaning brush is rotatably connected to the connecting plate through a torsional spring;

[0009] The adjusting component comprises a telescopic part and a rotating frame, the telescopic part comprises a fixed block, the fixed block is rotatably connected with a connecting block, the end of the connecting block is fixedly connected with a telescopic cylinder, and the end, away from the connecting block, of the telescopic cylinder is rotatably connected with a positioning block.

[0010] Preferably, the adjusting component is arranged on a support plate, the support plate is arranged on the cabin shell of the aircraft, and the windward component passes through the rotating frame;

[0011] The positioning block is fixedly arranged on the rotating frame, and the top and bottom of the rotating frame are provided with rotating motors, and the rotating motors are fixedly arranged on the support plate.

[0012] Preferably, the cleaning assembly further comprises a transverse plate, the transverse plate is provided with fixed plates at intervals, the adjacent fixed plates are rotatably provided with scrapers, the fixed plates are provided with locking components, both ends of the transverse plate are fixedly provided with limiting plates, the limiting plates are rotatably provided with rollers, one side of the roller is fixedly connected with a driving motor, the roller is provided with a groove in the radial direction, the heat exchange assembly is provided with a track, and the track is matched with the groove.

[0013] Preferably, the buffer assembly comprises a permanent magnet, one side of the permanent magnet is fixedly arranged on the heat exchange assembly, the other side of the permanent magnet is fixedly provided with a moving column, the moving column is movably provided with an electromagnet, the electromagnet is fixedly arranged on a right-angle plate, the right-angle plate is fixedly arranged on the box assembly, a buffer spring is fixedly arranged between the permanent magnet and the electromagnet, the buffer spring is arranged outside the moving column, and the moving column penetrates through the electromagnet and the right-angle plate.

[0014] Preferably, the box assembly comprises a heat exchange box, the heat exchange box is symmetrically provided with a support, the upper guide rod and the lower guide rod are sequentially and fixedly arranged between the supports in the vertical direction, the heat exchange assembly is movably arranged on the upper guide rod and the lower guide rod, the heat exchange box is provided with a ventilation grille on both sides, and the cold air inlet pipe, the hot air inlet pipe, the cold air outlet pipe and the hot air outlet pipe all extend out of one side of the heat exchange box.

[0015] Preferably, the windward assembly comprises a hose, one end of the hose is fixedly connected with the cold air inlet pipe, the other end is fixedly connected with a straight pipe, and the end, away from the hose, of the straight pipe is fixedly connected with a collecting cylinder.

[0016] A heat exchange method of a heat exchanger, comprising the following steps:

[0017] Step one, during the process of taking off and landing of the airplane, the current wind direction is identified through the sensor on the airplane, the orientation angle of the windward assembly is adjusted in real time by the adjusting assembly, so that the cold air can smoothly enter the cold air inlet pipe and the loss is reduced;

[0018] Step two, the cold air enters the heat exchange assembly through the cold air inlet pipe after entering the windward assembly and flowing in the heat exchange assembly, and is discharged to the outside through the cold air outlet pipe;

[0019] Step three, the hot air enters the heat exchange assembly through the hot air inlet pipe, exchanges heat with the cold air, and is discharged to the cabin of the airplane for use through the hot air outlet pipe;

[0020] Step four, the dust and water vapor on the heat exchange assembly are scraped off by reciprocating movement of the cleaning assembly, so as to prevent icing.

[0021] The technical effects and advantages of the present application are as follows:

[0022] 1. In the present application, the orientation angle of the windward assembly is adjusted according to the wind direction in the current flight process of the airplane through the adjusting assembly, so that the windward assembly is located at the best angle, and the maximum heat exchange efficiency of the cold air after entering is ensured; the surface of the heat exchange assembly is scraped off by the cleaning assembly, the dust and water vapor on the surface of the heat exchange assembly are removed, and the water vapor is prevented from condensing into ice to affect the heat exchange effect; and the vibration of the heat exchange assembly in the flight process of the airplane is damped by the buffer assembly.

[0023] 2. In the present application, the vertical angle of the windward assembly is adjusted by the telescopic part according to the real-time detected wind direction, the horizontal angle of the windward assembly is adjusted by the rotating frame, the windward assembly is relative to the wind direction, the cold air can enter parallel to the windward assembly, the angle deviation of the cold air when entering is avoided, the loss is reduced, and the heat exchange efficiency of the subsequent cold air entering the heat exchange assembly is affected.

[0024] 3、The present application, by setting the scraper and cleaning brush, the dust and water vapor on the surface of the sealing strip are scraped, avoid low temperature environment, water vapor condensation into ice, affect the heat exchange efficiency, avoid dust particles to cause corrosion of heat exchange components, resulting in leakage; At the same time, it can also detect the leakage point that has been generated, thereby increasing the tightness between the heat exchange plates, eliminating or slowing down the leakage phenomenon; by detecting whether the scraper and cleaning brush rotate during movement, to determine whether the sealing strip in the current heat exchange assembly is deformed, thereby avoiding the situation that leakage occurs due to poor sealing, at the same time, assisting the staff to carry out rapid repair.

[0025] 4、The present application, by real-time detection of the temperature and output of the hot gas after heat exchange, the external environment temperature of the current aircraft is judged, at the same time, it is judged that the water droplets on the wall inside the hot gas cavity are more, block the gas flow, cause the hot gas output to decrease, through the control of the buffer assembly to the heat exchange assembly, the water in the hot gas cavity falls quickly, dredge the hot gas cavity, at the same time, through the adjusting assembly changes the orientation of the windward assembly, thereby reducing the amount of cold air entering, and further ensuring the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the overall structure schematic diagram of the present application;

[0027] Figure 2 It is the internal structure schematic diagram of the overall assembly of the present application;

[0028] Figure 3 It is another angle internal structure schematic diagram of the overall assembly of the present application;

[0029] Figure 4 It is the adjusting assembly structure schematic diagram of the present application;

[0030] Figure 5 It is Figure 4 It is the enlarged structure schematic diagram of A part in the present application;

[0031] Figure 6 It is the cleaning assembly structure schematic diagram of the present application;

[0032] Figure 7 It is the explosion structure schematic diagram of the cleaning assembly of the present application;

[0033] Figure 8 It is the buffer assembly structure schematic diagram of the present application;

[0034] Figure 9 It is the position relationship schematic diagram of the box assembly, heat exchange assembly and windward assembly of the present application.

[0035] In the figure: 1, box assembly; 101, heat exchange box; 102, support column; 103, lower guide rod; 104, upper guide rod; 105, ventilation grille; 2, heat exchange assembly; 201, heat exchange plate; 202, sealing rubber strip; 203, fixed compression plate; 204, movable compression plate; 205, fastening screw; 3, cleaning assembly; 301, scraper; 302, cleaning brush; 303, connecting plate; 304, transverse plate; 305, fixed plate; 306, limiting plate; 307, roller; 308, drive motor; 309, 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, wind-facing assembly; 601, hose; 602, straight pipe; 603, collection cylinder; 7, adjustment assembly; 701, fixed block; 702, engagement 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

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] The heat exchange assembly 2 in the present application takes a plate heat exchanger as an example. The plate heat exchanger is mainly composed of plates. The plate material has 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 assembly 2 of the present application can also use a plate-fin heat exchanger. The plate-fin heat exchanger is usually composed of partitions, fins, seals, and flow guides. The fins not only increase the heat exchange area, but also make the flow of the fluid more mixed, thereby accelerating the heat transfer speed and further improving the heat exchange efficiency. The plate-fin heat exchanger is a heat exchange device with the advantages of high efficiency, compactness, and strong adaptability, and has been widely used in aerospace, refrigeration and air conditioning, automobile manufacturing, and other fields. In particular, in the case of high efficiency, compactness, and strong adaptability, the plate-fin heat exchanger plays an irreplaceable role.

[0038] In order to solve the problem that the entering angle of cold air into the cold air pipe is not the same due to the real-time change of the wind direction outside during the process of take-off and landing of the aircraft, resulting in a large loss of cold air, causing the heat exchange efficiency to decrease, and the dust and residual water vapor adsorbed on the heat exchanger cannot be removed, leading to icing phenomenon of the heat exchanger when entering low-temperature high-altitude, thereby reducing the heat exchange efficiency of the heat exchanger, embodiment one is proposed.

[0039] Example 1:

[0040] like Figures 1 to 9 As shown, the present invention discloses a heat exchanger, including a housing assembly 1, a heat exchange assembly 2 is disposed inside the housing assembly 1, a cleaning assembly 3 is disposed on the heat exchange assembly 2, cold and hot air inlets and cold and hot air outlets are respectively disposed on the heat exchange assembly 2, a cold air inlet pipe 5 and a hot air inlet pipe 9 are respectively connected to the cold and hot air inlets, and a cold air outlet pipe 8 and a hot air outlet pipe 10 are respectively disposed on the cold and hot air outlets, a buffer assembly 4 is evenly disposed on the side of the heat exchange assembly 2 near the cold air inlet pipe 5, a windward assembly 6 is connected to one end of the cold air inlet pipe 5, and an adjustment assembly 7 is disposed on the windward assembly 6; the adjustment assembly 7 is disposed on a support plate 11, and the support plate 11 is disposed on the aircraft cabin shell.

[0041] 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 at the optimal angle to ensure that the cold air can achieve the maximum heat exchange efficiency after entering; by setting the cleaning component 3, the surface of the heat exchange component 2 is scraped to remove dust and water vapor from the surface of the heat exchange component 2, preventing 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.

[0042] During flight, aircraft perform maneuvers such as takeoff, landing, turning, and altitude gain / loss. During these maneuvers, the wind direction changes in real time, causing the direction of incoming cold air to be at an angle to the air conditioning duct. Compared to cold air entering directly into the air conditioning duct, the amount of cold air entering at an angle to the duct is reduced. Some cold air is lost due to rebound or collision with the duct, resulting in a significant reduction in heat exchange efficiency.

[0043] By adjusting component 7 according to the wind direction, the orientation angle of the windward component 6 is adjusted in real time, such as... Figures 4-5 As shown, the adjustment component 7 includes a telescopic part and a rotating frame 705. Fixed blocks 701 are fixedly mounted on the straight pipe 602 and arranged symmetrically along the radial direction, with at least two fixed blocks 701 on the same side. The telescopic part includes fixed blocks 701, and 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 the end of the telescopic cylinder 703 away from the connecting block 702. The windward component 6 passes through the rotating frame 705, and the straight pipe 602 is located within the rotating frame 705. The positioning block 704 is fixedly mounted on the rotating frame 705. A rotating motor 706 is provided at the top and bottom of the rotating frame 705, and the rotating motor 706 is fixedly mounted on the support plate 11.

[0044] In use, according to the sensors of the aircraft itself, the current wind direction is detected, and the signal is transmitted to the central control module, and the central control module issues an instruction to the adjusting assembly 7, and the windward assembly 6 needs to be adjusted to the corresponding angle, if vertical adjustment is needed, the adjusting steps are: controlling the output end of the upper telescopic cylinder 703 to elongate 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, so as to adjust the angle of the straight pipe 602 in the vertical direction; if horizontal adjustment is needed, the adjusting steps are: controlling the rotating motor 706 to drive the rotating frame 705 to rotate, thereby driving the straight pipe 602 located therein to rotate in the horizontal direction, and completing the adjustment of the angle of the straight pipe 602 in the vertical direction.

[0045] According to the real-time detected wind direction, the vertical angle of the windward assembly 6 is adjusted by setting the telescopic part, and the horizontal angle of the windward assembly 6 is adjusted by setting the rotating frame 705, so as to ensure that the windward assembly 6 is opposite to the wind direction, so that the cold air can enter parallel to the windward assembly 6, avoid the angle deviation when the cold air enters, and the loss occurs, thereby affecting the heat exchange efficiency in the subsequent heat exchange assembly 2.

[0046] During the flight of the aircraft, the flight height of the aircraft is generally in the troposphere, and the water vapor content in the troposphere is very high and contains a large amount of dust particles. Water vapor and dust particles can enter the inside of the heat exchanger from the gaps on the cabin shell of the aircraft, so that the surface of the heat exchange assembly 2 is attached with dust or water vapor, and ice is easily formed in the low-temperature environment of the troposphere, which affects the heat exchange efficiency. At the same time, the dust particles are fixed on the heat exchange assembly 2 by the ice layer, which is easy to cause corrosion to the heat exchange assembly 2, resulting in air leakage of the heat exchange assembly 2 and other situations.

[0047] In order to solve the above technical problems, the cleaning assembly 3 is regularly set to scrape the outer surface of the heat exchange assembly 2 to remove water vapor and dust and other impurities, as shown in Figures 6-7 The cleaning assembly 3 includes a scraper 301 and a cleaning brush 302, and the side close to the cleaning brush 302 of the scraper 301 is provided with a connecting plate 303, and the cleaning brush 302 is rotatably connected to the connecting plate 303 through a torsional spring; the cleaning assembly 3 further includes a transverse plate 304, and the transverse plate 304 is provided with fixed plates 305 at intervals, and the adjacent fixed plates 305 are rotatably provided with the scraper 301, and the scraper 301 is rotatably connected between the fixed plates 305 through a torsional spring, and the fixed plates 305 are provided with a locking assembly for limiting the rotation of the scraper 301, and the two ends of the transverse plate 304 are respectively fixedly provided with limit plates 306, and the limit plates 306 are rotatably provided with rollers 307, and one side of the roller 307 is fixedly connected with a driving motor 308, and the roller 307 is provided with a groove in the radial direction, and the heat exchange assembly 2 is provided with a track 309, and the track 309 is matched with the groove.

[0048] In use, first control the locking assembly to open, lock the scraper 301, limit its rotation, then control the driving motor 308 to rotate, drive the roller 307 to move along the track 309, thereby drive 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, and the cleaning brush 302 then sweeps it away.

[0049] During the flight of the aircraft, as the flight height changes, the external temperature changes greatly, and the sealing strip 202 may deform, for example, concave after hardening at low temperature, and swelling after softening at high temperature, thereby causing the sealing strip 202 to seal loosely, the heat exchanger to leak, and the heat exchange efficiency to decrease.

[0050] To solve the above technical problems, before the aircraft takes off and after it lands, the locking assembly is controlled to close, the locking of the scraper 301 is released, 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 change of the compression amount of the torsion spring on the scraper 301 and the torsion spring on the cleaning brush 302, whether the sealing strip 202 deforms can be identified. Specifically, during the movement of the scraper 301 along the track 309, the compression amount of the torsion spring on the scraper 301 and the cleaning brush 302 does not change, which represents that the current sealing strip 202 is flat and does not deform. When the compression amount of the torsion spring on the scraper 301 and the cleaning brush 302 decreases, it represents that the scraper 301 and the cleaning brush 302 pass through the concave position on the sealing strip 202, and the scraper 301 and the cleaning brush 302 rotate towards 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 represents that the scraper 301 and the cleaning brush 302 pass through the convex 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 the 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 to repair the heat exchanger.

[0051] The dust and water vapor on the surface of the sealing rubber strip 202 are scraped by the scraper 301 and the cleaning brush 302, so that the water vapor is prevented from condensing into ice in a low-temperature environment, the heat exchange efficiency is prevented from being affected, the dust particles are prevented from corroding the heat exchange assembly 2, and the heat exchange assembly 2 is prevented from leaking; whether the sealing rubber strip 202 in the heat exchange assembly 2 is deformed is judged by detecting whether the scraper 301 and the cleaning brush 302 rotate during movement, so that the situation that leakage occurs due to the sealing being not tight is avoided, and meanwhile, the staff is assisted to quickly repair.

[0052] During the flight of the airplane, the heat exchanger also vibrates due to the turbulence of the airflow, so the buffer assembly 4 is arranged to reduce the vibration. As shown in Figure 8 The buffer assembly 4 includes a permanent magnet 401, one side of the permanent magnet 401 is fixedly arranged on the heat exchange assembly 2, the permanent magnet 401 is fixedly arranged on the fixed pressing plate 203, the buffer assembly 4 is arranged at the four corner positions of the fixed pressing plate 203, the other side of the permanent magnet 401 is fixedly arranged with a moving column 402, the moving 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 assembly 1, the right-angle plate 404 is fixedly arranged on the heat exchange box 101, the permanent magnet 401 and the electromagnet 405 are fixedly arranged with a buffer spring 403, the buffer spring 403 is arranged outside the moving column 402, and the moving column 402 penetrates through the electromagnet 405 and the right-angle plate 404. In use, the electromagnet 405 is not electrified, when the heat exchange assembly 2 vibrates, the heat exchange assembly 2 pushes the moving column 402 to reciprocate in the electromagnet 405 and the right-angle plate 404 through the permanent magnet 401, and the vibration is reduced by the buffer spring 403, so that the vibration feeling of the heat exchange assembly 2 is reduced.

[0053] As shown in Figure 9As shown, the box assembly 1 includes a heat exchange box 101, the heat exchange box 101 is symmetrically provided with a support column 102, the upper guide rod 104 and the lower guide rod 103 are sequentially fixed and arranged between the support columns 102 in the vertical direction, the heat exchange assembly 2 is movably arranged on the upper guide rod 104 and the lower guide rod 103, the top and the bottom of the fixed compression plate 203 and the movable compression plate 204 are provided with notches, the notches are respectively matched with the upper guide rod 104 and the lower guide rod 103, so that the heat exchange assembly 2 can reciprocate along the upper guide rod 104 and the lower guide rod 103, ventilation grilles 105 are arranged 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 extend out from one side of the heat exchange box 101; the windward assembly 6 is used for receiving external cold air, the windward assembly 6 includes a hose 601, the hose 601 can ensure that when the windward assembly 6 adjusts the direction, the cold air can also smoothly enter the heat exchange assembly 2 for heat exchange, one end of the hose 601 is fixedly connected with the cold air inlet pipe 5, the other end is fixedly connected with a straight pipe 602, one end of the straight pipe 602 away from the hose 601 is fixedly connected with a collecting cylinder 603, a fan is arranged in the collecting cylinder 603 and used for sucking cold air, the flowing direction of the cold air is: from the collecting cylinder 603 into the straight pipe 602, sequentially 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.

[0054] As shown in the figure, Figure 9 The heat exchange assembly 2 includes a heat exchange plate 201, a fixed compression plate 203 and a movable compression plate 204, one side of the heat exchange plate 201 is provided with a sealing rubber strip 202, the heat exchange plates 201 are arranged between the fixed compression plate 203 and the movable compression plate 204, the fixed compression plate 203 and the movable compression plate 204 are provided with fastening screws 205, by rotating the fastening screws 205, the movable compression plate 204 moves towards the fixed compression plate 203, the distance between the movable compression plate 204 and the fixed compression plate 203 is shortened, so that the heat exchange plates 201 are tightly attached to each other; the heat exchange plate 201 has a rubber strip side and a back side, one side provided with the sealing rubber strip 202 is the rubber strip side, and the other side is the back side, the sealing rubber strip 202 protrudes from the heat exchange plate 201, the rubber strip side of any heat exchange plate 201 is attached to the back side of the adjacent heat exchange plate 201 to form a cavity, the cavities are alternately arranged as cold air cavities and hot air cavities, the flowing direction of the hot air is: from the hot air inlet pipe 9, through the hot air cavity, after heat exchange with the cold air cavity, discharged from the hot air outlet pipe 10, and provided for the cabin.

[0055] The working principle of the present application is as follows: firstly, check whether the sealing strip 202 is deformed, before the airplane takes off and after landing, control the locking assembly to close, release the locking of the scraper 301, control the driving motor 308 to drive the transverse plate 304 to move along the track 309 through the roller 307, so as to drive the scraper 301 to move, in the moving process, according to the change of the compression amount of the torsional spring on the scraper 301 and the cleaning brush 302, whether the current sealing strip 202 is deformed can be identified, specifically: in the process of the scraper 301 completing a movement along the track 309, the compression amount of the torsional spring on the scraper 301 and the cleaning brush 302 does not change, which represents that the current sealing strip 202 is flat and there is no deformation; when the compression amount of the torsional spring on the scraper 301 and the cleaning brush 302 decreases, it represents that the scraper 301 and the cleaning brush 302 pass through the recessed position on the sealing strip 202, the scraper 301 and the cleaning brush 302 rotate towards the sealing strip 202, so that the compression amount of the torsional spring decreases; when the compression amount of the torsional spring on the scraper 301 and the cleaning brush 302 increases, it represents that the scraper 301 and the cleaning brush 302 pass through the protruding position on the sealing strip 202, the scraper 301 and the cleaning brush 302 rotate away from the sealing strip 202, so that the compression amount of the torsional spring increases; when the deformation of the sealing strip 202 is detected, the signal is transmitted to the central control module, and the central control module prompts the staff to need to overhaul the heat exchanger.

[0056] Secondly, adjust the direction of the windward assembly 6, detect the current wind direction according to the sensor of the airplane itself, and transmit the signal to the central control module, and the central control module issues an instruction to the adjusting assembly 7, and needs to adjust the windward assembly 6 to the corresponding angle, if vertical adjustment is needed, the adjusting steps are: control the output end of the upper telescopic cylinder 703 to elongate 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, so as to adjust the angle of the straight pipe 602 in the vertical direction; if horizontal adjustment is needed, the adjusting steps are: control the rotating motor 706 to drive the rotating frame 705 to rotate, so as to drive the straight pipe 602 located therein to rotate horizontally, complete the adjustment of the angle of the straight pipe 602 in the vertical direction, so that the collecting cylinder 603 faces the direction of the wind direction.

[0057] Then, heat exchange assembly 2 performs heat exchange. Outside cold air enters from collection cylinder 603 into straight pipe 602, passes through hose 601, cold air inlet pipe 5, and cold air cavity in sequence, and finally exits from cold air outlet pipe 8. Hot air enters from hot air inlet pipe 9, passes through hot air cavity, exchanges heat with cold air cavity, and then exits from hot air outlet pipe 10 to supply the cabin. During the heat exchange process, water vapor and dust on the outside of heat exchange assembly 2 are intermittently removed. Specifically, the locking assembly is opened to lock scraper 301, restricting its rotation. Then, the drive motor 308 is controlled to rotate, driving roller 307 to move along track 309, thereby driving transverse plate 304 to move along track 309, which in turn drives scraper 301 to clean dust and water vapor on the surface of sealing strip 202. At the same time, fixed plate 305 cleans the surface of heat exchange plate 201, and cleaning brush 302 removes residual dust.

[0058] Based on the technical solution of Embodiment 1 above, due to the different flight altitudes of the aircraft, the temperature of the outside cold air varies. The higher the flight altitude, the lower the temperature of the outside cold air. When the aircraft flies at high altitude, the outside air temperature is lower, the heat exchange effect increases, and the hot air cools down rapidly. The moisture contained in the hot air may condense into liquid water droplets upon contact with the low temperature and hang inside the hot air cavity, reducing the space of the hot air cavity, increasing fluid resistance, and reducing the amount of hot air passing through, thereby affecting the heat exchange efficiency. At the same time, the temperature required inside the aircraft cabin is to be stable within a constant range. If the cold air temperature is too low, the hot air will cool down too much, thus falling below the required cabin temperature, resulting in excessive heat exchange and affecting the use of the aircraft cabin. In addition, although it is possible to judge whether the sealing strip 202 has deformed before the aircraft takes off and after landing to prevent air leakage, if the sealing strip 202 has air leakage during the flight, it is impossible to identify and judge. Therefore, Embodiment 2 is proposed to solve the above technical problems.

[0059] Example 2:

[0060] like Figure 9 As shown, flow sensors are installed on the hot air inlet pipe 9 and the hot air outlet pipe 10 to detect the loss of hot air, and a temperature sensor is installed on the hot air outlet pipe 10 to detect whether the temperature of the hot air after heat exchange meets the required temperature of the cabin.

[0061] With the increase or decrease of the flight height of the aircraft, the temperature of the external cold air changes. When the temperature sensor detects that the temperature of the heat-exchanged hot air is lower than the required temperature of the cabin, and the flow sensor on the hot air inlet pipe 9 shows a value greater than the flow sensor on the hot air outlet pipe 10, it means that the current cold air temperature is too low, resulting in too high heat exchange degree, and thus the temperature of the heat-exchanged hot air is too low, which does not meet the required temperature of the cabin. At the same time, the current hot air intake is greater than the output, which indicates that there is a blockage of gas flow in the current hot air cavity, i.e. there are many water droplets hanging on the walls of the hot air cavity, which reduces the through space of the hot air cavity and thus the output of the hot air. At this time, the buffer assembly 4 is controlled to vibrate the heat exchange assembly 2, so that the water in the hot air cavity falls quickly and is discharged from the hot air outlet pipe 10. Specifically, the electromagnetic iron 405 is controlled to pass intermittent current. When the electromagnetic iron 405 is powered on, it generates a magnetic attraction force on the permanent magnet 401, so that the heat exchange assembly 2 moves as a whole towards the direction of the electromagnetic iron 405 through the fixed compression plate 203, and the buffer spring 403 is compressed. When the electromagnetic iron 405 is powered off, the buffer spring 403 will push the heat exchange assembly 2 to move away from the electromagnetic iron 405 due to its own elastic force, so that the heat exchange assembly 2 moves back and forth quickly, thereby shaking off the water droplets in the hot air cavity and unblocking the through space of the hot air cavity, so that the hot air is stably outputted and the heat exchange efficiency is ensured. At the same time, the orientation of the windward assembly 6 is adjusted by the adjusting assembly 7, so as to reduce the amount of cold air entering. Specifically, according to the current orientation of the windward assembly 6, the adjusting assembly 7 is controlled to drive the windward assembly 6 to adjust in the opposite direction, for example, the current windward assembly 6 is horizontally offset by 30° to the left and vertically offset by 45° upward. At this time, the output end of the telescopic cylinder 703 of the telescopic part is controlled to extend and retract, driving the straight pipe 602 to rotate downward, and the rotating motor 706 is controlled to drive the rotating frame 705 to rotate to the right, thereby driving the collecting cylinder 603 to gradually deviate from the angle of the wind direction, so as to reduce the amount of cold air entering, thereby reducing the heat exchange degree and ensuring that the temperature of the heat-exchanged hot air meets the required temperature of the cabin.

[0062] By detecting the temperature of the heat-exchanged hot air and the output of the hot air in real time, the temperature of the external environment where the current aircraft is located is determined, and it is also determined that there are many water droplets hanging on the walls of the hot air cavity, which block the gas flow and reduce the output of the hot air. The buffer assembly 4 is controlled to vibrate the heat exchange assembly 2, so that the water in the hot air cavity falls quickly and unblocks the hot air cavity. At the same time, the orientation of the windward assembly 6 is adjusted by the adjusting assembly 7, so as to reduce the amount of cold air entering, thereby ensuring the heat exchange efficiency.

[0063] When the cleaning assembly 3 is cleaning, the scraper 301 scrapes the dust and water vapor adhered to the surface of the sealing strip 202, and the cleaning brush 302 sweeps the residual dust; in the above process, when the compression amount of the torsion spring on the cleaning brush 302 increases, it represents the current air leakage point passing through the sealing strip 202; the gas leaked from the air leakage point generates a blowing force on the cleaning brush 302, so that the cleaning brush 302 rotates away from the sealing strip 202, so that the compression amount of the torsion spring increases; at this time, the control of the fastening screw 205 is rotated, so that the movable pressing plate 204 continues to approach the fixed pressing plate 203, and the close-fitting degree between the heat exchange plates 201 is increased, so that the air leakage phenomenon is eliminated or slowed down, the heat exchange efficiency is ensured, the loss is reduced, and at the same time, a signal is transmitted to the central control module to remind the staff to detect the air leakage point after the airplane lands; if there is no air leakage point, the cleaning brush 302 will not rotate, and the compression amount of the torsion spring remains unchanged after cleaning once.

[0064] Embodiment three:

[0065] The application further provides a heat exchange method of the heat exchanger, comprising the following steps:

[0066] Step one, during the process from taking off to landing of the airplane, the current wind direction is identified through the sensor on the airplane, the control of the adjusting assembly 7 adjusts the direction of the windward assembly 6 to the direction of the wind direction in real time, so that the cold air enters the cold air inlet pipe 5 smoothly, and the loss is reduced.

[0067] Step two, the cold air enters from the windward assembly 6, flows in the heat exchange assembly 2 through the cold air inlet pipe 5, and is discharged to the outside from the cold air outlet pipe 8.

[0068] Step three, the hot air enters the heat exchange assembly 2 from the hot air inlet pipe 9, exchanges heat with the cold air, and is discharged to the airplane cabin for use from the hot air outlet pipe 10.

[0069] Step four, the dust and water vapor on the heat exchange assembly 2 are scraped by controlling the reciprocating movement of the cleaning assembly 3, so as to prevent icing.

[0070] Finally, it should be noted that: the above only describes the preferred embodiments of the application and is not used to limit the application, although the application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application should be included in the protection scope of the application.

Claims

1. An aircraft heat exchanger, characterized in that: The enclosure includes a housing assembly, inside which is a heat exchange assembly. The heat exchange assembly is equipped with a cleaning assembly. The heat exchange assembly is equipped with cold and hot air inlets and cold and hot air outlets. The cold and hot air inlets are connected to cold air inlet pipes and hot air inlet pipes, respectively. The cold and hot air outlets are equipped with cold air outlet pipes and hot air outlet pipes, respectively. Buffer components are evenly arranged on the side of the heat exchange assembly near the cold air inlet pipe. One end of the cold air inlet pipe is connected to a windward assembly, and the windward assembly is equipped with an adjustment component. The housing assembly includes a heat exchange box, which is symmetrically equipped with support columns. An upper guide rod and a lower guide rod are fixedly installed vertically between the support columns. The heat exchange assembly is movably mounted on the upper guide rod and the lower guide rod. The cleaning assembly includes a scraper and a cleaning brush. A connecting plate is provided on the side of the scraper near the cleaning brush, and the cleaning brush is rotatably connected to the connecting plate via a torsion spring. The cleaning assembly also includes a horizontal plate with fixed plates spaced apart on it. A scraper is rotatably mounted between adjacent fixed plates. A locking assembly is provided on the fixed plates. Limit plates are fixedly mounted at both ends of the horizontal plate, and a roller is rotatably mounted between the limit plates. A drive motor is fixedly connected to one side of the roller. The roller has a groove along its radial direction, and a track is provided on the heat exchange assembly, which fits into the groove. The adjustment assembly includes a telescopic part and a rotating frame. The telescopic part includes a fixed block, a connecting block rotatably connected to the fixed block, a telescopic cylinder fixedly connected to the end of the connecting block, and a positioning block rotatably connected to the end of the telescopic cylinder away from the connecting block. The adjustment assembly is mounted on a support plate, which is mounted on the aircraft cabin shell. The windward assembly passes through the rotating frame. The positioning block is fixedly mounted on the rotating frame. Rotary motors are mounted at the top and bottom of the rotating frame, and the rotary motors are fixedly mounted on the support plate. The buffer assembly includes a permanent magnet. One side of the permanent magnet is fixedly mounted on the heat exchange assembly, and a movable column is fixedly mounted on the other side of the permanent magnet. An electromagnet is movably mounted on the movable column, and the electromagnet is fixedly mounted on a right-angle plate. The right-angle plate is fixedly mounted on the housing assembly. A buffer spring is fixedly mounted between the permanent magnet and the electromagnet. The buffer spring is located outside the movable column, and the movable column passes through the electromagnet and the right-angle plate. When in use, the electromagnet is not energized. The windward assembly includes a flexible hose, one end of which is fixedly connected to a cold air intake pipe, and the other end is fixedly connected to a straight pipe. A collection cylinder is fixedly connected to the end of the straight pipe furthest from the hose. A fan is installed inside the collection cylinder to draw in cold air. The cold air flows from the collection cylinder into the straight pipe, then sequentially through the flexible hose, the cold air intake pipe, and the cold air cavity, finally exiting from the cold air outlet pipe. When the temperature sensor detects that the temperature of the heat-exchanged hot air is lower than the required temperature of the cabin, and the flow sensor reading on the hot air intake pipe is greater than the flow sensor reading on the hot air outlet pipe, and the current hot air intake is greater than the output, an intermittent current is applied to the electromagnet. The energized electromagnet generates a magnetic attraction force on the permanent magnet, which, through a fixed clamping plate, moves the entire heat exchange assembly toward the electromagnet, compressing the buffer spring. When the electromagnet is de-energized, the buffer spring, due to its own elasticity, pushes the heat exchange assembly away from the electromagnet, causing the heat exchange assembly to move rapidly back and forth, shaking off water droplets inside the hot air cavity. Before takeoff and after landing, the control locking assembly closes, releasing the scraper. The control drive motor then moves the transverse plate along the track via rollers, thus moving the scraper. During this movement, the compression of the torsion springs on the scraper and the cleaning brush changes. If the compression of the torsion springs on the scraper and the cleaning brush does not change during one movement of the scraper along the track, it indicates that the sealing strip is not deformed. When the compression of the torsion springs on the scraper and the cleaning brush decreases, it indicates that the scraper and the cleaning brush are passing through the recessed areas of the sealing strip. When the compression of the torsion springs on the scraper and the cleaning brush increases, it indicates that the scraper and the cleaning brush are passing through the protruding areas of the sealing strip. 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 out through one side of the heat exchange box. The aircraft's own sensors detect the current wind direction and transmit the signal to the central control module. The central control module then issues instructions to the adjustment components, requiring the windward components to be adjusted to the corresponding angle, or if vertical adjustments are needed. The adjustment steps are as follows: control the output end of the upper telescopic cylinder to extend or shorten by the corresponding telescopic amount, and the output end of the lower telescopic cylinder to output a telescopic amount opposite to the telescopic direction of the upper telescopic cylinder, thereby adjusting the vertical angle of the straight pipe; if horizontal adjustment is required, the adjustment steps are as follows: control the rotating motor to drive the rotating frame to rotate, thereby driving the straight pipe located inside to rotate horizontally, completing the adjustment of the vertical angle of the straight pipe.

2. The heat exchange method for an aircraft heat exchanger according to claim 1, characterized in that, Includes the following steps: Step 1: During the process from takeoff to landing, the aircraft's sensors identify the current wind direction and control the adjustment components to adjust the orientation of the windward components in real time, so that cold air can smoothly enter the cold air intake pipe and reduce losses. Step 2: Cold air enters from the windward assembly, flows through the cold air inlet pipe into the heat exchange assembly, and then is discharged to the outside through the cold air outlet pipe. Step 3: Hot air enters the heat exchange assembly through the hot air intake pipe, exchanges heat with the cold air, and is then discharged into the aircraft cabin through the hot air exhaust pipe for use. Step 4: By controlling the reciprocating movement of the cleaning component, dust and moisture on the heat exchange component are scraped off to prevent icing.

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