A heat exchange core, a fresh air device and a wind field regulation method

Abstract

The present invention discloses a heat exchange core, a fresh air device and a wind field adjustment method. Among them, the heat exchange core includes: at least one heat exchange unit; the heat exchange unit includes: a heat exchange membrane and an adjustment mechanism; the adjustment mechanism is used to adjust the height of the heat exchange unit in a direction perpendicular to the plane where the heat exchange membrane is located; the heat exchange membranes of the heat exchange units are arranged in parallel in sequence. By adjusting the height of the heat exchange unit through the adjustment mechanism, the gap distance between two adjacent heat exchange membranes is changed, so that under a certain wind speed and time, the air volume passing through the gap changes, achieving the purpose of adjusting the wind field, enabling the wind field to be uniform, ensuring sufficient heat exchange, and avoiding the decline of heat exchange performance.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air equipment, and more particularly, to a heat exchange core, fresh air equipment and a wind field adjustment method. Background Art

[0002] Fresh air equipment is currently widely used in civil comfort applications such as green buildings, transportation hubs, and education and medical care. In particular, for large fresh air fans, due to the compactness of the unit structure and space requirements, the fan and the core cannot be strictly symmetrically arranged, resulting in a very uneven wind field and flow field inside the unit. For example, in the area directly facing the fan, the wind speed is high and the air volume is large, while in other areas, the wind speed is low and the air volume is small. After the wind fields of two-way flow heat exchange units are superimposed, the uneven heat exchange between fresh air and return air becomes more prominent. For example, heat exchange between high fresh air speed and low return air speed leads to low heat exchange performance. Summary of the Invention

[0003] Embodiments of the present invention provide a heat exchange core, fresh air equipment and a wind field adjustment method to at least solve the problems of insufficient heat exchange and low heat exchange efficiency caused by uneven wind fields in the prior art.

[0004] To solve the above technical problems, an embodiment of the present invention provides a heat exchange core, including: at least one heat exchange unit; the heat exchange unit includes: a heat exchange membrane and an adjustment mechanism; the adjustment mechanism is used to adjust the height of the heat exchange unit in a direction perpendicular to the plane where the heat exchange membrane is located; the heat exchange membranes of the respective heat exchange units are arranged in parallel in sequence.

[0005] Optionally, the heat exchange unit further includes: a main body frame; the heat exchange membrane is installed on the main body frame; the adjustment mechanism is installed on the main body frame.

[0006] Optionally, when the heat exchange core includes two or more heat exchange units, the two or more heat exchange units are sequentially connected through their respective main body frames.

[0007] Optionally, the adjustment mechanism is a telescopic mechanism.

[0008] Optionally, the heat exchange unit further includes: a first baffle and a second baffle, which are respectively installed on two specified opposite surfaces of the main body frame.

[0009] Optionally, both the first baffle and the second baffle are flexible folding baffles.

[0010] Optionally, the surfaces where the first baffle and the second baffle of adjacent heat exchange units are located are different surfaces.

[0011] Optionally, the angle between the first baffles of adjacent heat exchange units is 90 degrees, and the angle between the second baffles of adjacent heat exchange units is 90 degrees.

[0012] Optionally, the heat exchange unit further includes: a pressure-sensitive sensing element installed on the heat exchange membrane for monitoring the wind pressure of the heat exchange unit.

[0013] Optionally, the heat exchange core further includes: an end storage device located at the end of the heat exchange core for storing idle heat exchange units.

[0014] An embodiment of the present invention further provides a fresh air device, including: the heat exchange core described in the embodiment of the present invention.

[0015] An embodiment of the present invention further provides a wind field adjustment method, including: obtaining the current wind pressure of each heat exchange unit in the heat exchange core; adjusting the height of the heat exchange unit according to the current wind pressure and the target wind pressure of the heat exchange unit so that the deviation between the wind pressure of the heat exchange unit and the target wind pressure is less than or equal to a preset threshold; wherein, the heat exchange core includes at least one heat exchange unit, and the heat exchange unit includes: a heat exchange membrane and an adjustment mechanism, and the adjustment mechanism is used to adjust the height of the heat exchange unit in a direction perpendicular to the plane where the heat exchange membrane is located; the heat exchange membranes of each heat exchange unit are arranged in parallel in sequence.

[0016] Optionally, adjusting the height of the heat exchange unit according to the current wind pressure and the target wind pressure of the heat exchange unit so that the deviation between the wind pressure of the heat exchange unit and the target wind pressure is less than or equal to a preset threshold includes: determining whether the deviation between the current wind pressure of the heat exchange unit and the target wind pressure is greater than the preset threshold; if the deviation is greater than the preset threshold, adjusting the height of the heat exchange unit according to the magnitudes of the current wind pressure and the target wind pressure of the heat exchange unit so that the deviation is less than or equal to the preset threshold; if the deviation is less than or equal to the preset threshold, keeping the current height of the heat exchange unit unchanged.

[0017] Optionally, adjusting the height of the heat exchange unit according to the magnitudes of the current wind pressure and the target wind pressure of the heat exchange unit includes: if the current wind pressure of the heat exchange unit is greater than the target wind pressure, increasing the height of the heat exchange unit; if the current wind pressure of the heat exchange unit is less than the target wind pressure, decreasing the height of the heat exchange unit.

[0018] Optionally, before adjusting the height of the heat exchange unit according to the current wind pressure and the target wind pressure of the heat exchange unit, it further includes: calculating the average value of the current wind pressures of all heat exchange units as the target wind pressure.

[0019] Optionally, before adjusting the height of the heat exchange unit according to the current wind pressure and the target wind pressure of the heat exchange unit, it further includes: determining whether there is a need for self-cleaning; if so, controlling the adjustment mechanism of the heat exchange unit with the self-cleaning need to expand and contract a preset number of times according to a preset expansion and contraction degree; controlling the fan to turn on for a preset time.

[0020] Optionally, obtaining the current air pressure of each heat exchange unit in the heat exchange core includes: obtaining the current air pressure of the heat exchange unit through a pressure-sensitive sensing element, where the pressure-sensitive sensing element is installed on the heat exchange membrane of the heat exchange unit.

[0021] An embodiment of the present invention further provides a computer device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the steps of the method described in the embodiment of the present invention are implemented.

[0022] An embodiment of the present invention further provides a non-volatile computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in the embodiment of the present invention are implemented.

[0023] Applying the technical solution of the present invention, the height of the heat exchange unit is adjusted through an adjustment mechanism, so that the gap distance between two adjacent heat exchange membranes changes, thereby changing the air volume passing through the gap at a certain wind speed and time, achieving the purpose of adjusting the wind field, enabling the wind field to be uniform, ensuring sufficient heat exchange, and avoiding a decline in heat exchange performance. Description of the Drawings

[0024] Figure 1 is a schematic diagram of a heat exchange core provided in Embodiment 1 of the present invention;

[0025] Figure 2 is a schematic diagram of a heat exchange unit provided in Embodiment 1 of the present invention;

[0026] Figure 3 is a flowchart of a wind field adjustment method provided in Embodiment 3 of the present invention;

[0027] Figure 4 is a specific control flowchart of the wind field adjustment method provided in Embodiment 3 of the present invention. Detailed Embodiments

[0028] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present invention are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0030] It should be noted that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer-executable instructions. And although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here. Embodiment 1

[0031] This embodiment provides a heat exchange core, as Figure 1 shown, the heat exchange core includes: at least one heat exchange unit 10. When the heat exchange core includes more than two heat exchange units 10, the above-mentioned more than two heat exchange units 10 are installed and arranged in sequence.

[0032] As Figure 2 shown, the heat exchange unit 10 includes: a main body frame 11, a heat exchange membrane 12 and an adjustment mechanism 13. The heat exchange membrane 12 is installed on the main body frame 11. The adjustment mechanism 13 is installed on the main body frame 11. The adjustment mechanism 13 is used to adjust the height of the heat exchange unit 10 in the direction perpendicular to the plane where the heat exchange membrane 12 is located. When the heat exchange core includes more than two heat exchange units 10, the heat exchange membranes 12 of the above-mentioned more than two heat exchange units 10 are arranged in parallel in sequence. The height of each heat exchange unit 10 in the heat exchange core can be adjusted, so that the length of the entire heat exchange core can be changed.

[0033] In the heat exchange core of this embodiment, the height of the heat exchange unit 10 is adjusted by the adjustment mechanism 13, so that the gap distance between two adjacent heat exchange membranes 12 is changed, so that under a certain wind speed and time, the air volume passing through the gap changes, achieving the purpose of adjusting the wind field, enabling the wind field to be uniform, ensuring sufficient heat exchange, and avoiding the decline of heat exchange performance.

[0034] The main body frame 11 can be as Figure 1 and Figure 2The rectangular parallelepiped or cube shown, that is, the heat exchange core is a plate heat exchange core. The main frame 11 can also be a cylinder, that is, the heat exchange membrane 12 is circular. Of course, the main frame 11 can also be other achievable shapes.

[0035] The main frame 11 includes at least two symmetrically arranged brackets, each bracket is equipped with an adjustment mechanism 13, and the two adjustment mechanisms 13 are adjusted synchronously to ensure that the height of the entire heat exchange unit 10 changes smoothly without causing the heat exchange membrane 12 to tilt. Figure 2 The main frame 11 includes four brackets, on which four adjustment mechanisms 13 are installed.

[0036] It should be noted that the heat exchange membrane 12 can be Figure 2 As shown, the heat exchange membrane 12 is installed at one end of the main frame 11, that is, installed at one end of the bracket. The heat exchange membrane 12 can also be installed at other positions of the main frame 11, that is, installed at a non-end position of the bracket (such as the middle position). In this case, the adjustment mechanism 13 can be set on both sides of the heat exchange membrane 12, that is, two adjustment mechanisms 13 are set on the same bracket.

[0037] Specifically, when the heat exchange core includes more than two heat exchange units 10, the two or more heat exchange units 10 are sequentially connected through their respective main frames 11. Exemplarily, the main frames 11 of the heat exchange units 10 can be connected by means of buckles or the like.

[0038] The adjustment mechanism 13 may be a telescopic mechanism, such as Figure 2 As shown, the height of the heat exchange unit 10 can be adjusted by extending or contracting the telescopic mechanism. When the telescopic mechanism is extended, the height of the heat exchange unit 10 is increased, and when the telescopic mechanism is contracted, the height of the heat exchange unit 10 is reduced. The adjustment mechanism 13 can also be a self-expanding material structure, and the height of the heat exchange unit 10 can be adjusted by different expansion amounts. Specifically, the adaptive wind field adjustment of the heat exchange core can be achieved through the corresponding relationship between wind pressure and expansion amount.

[0039] like Figure 2 As shown, the heat exchange unit 10 may further include: a first baffle 14 and a second baffle 15, which are respectively mounted on two opposite designated surfaces of the main frame 11. For the cylindrical main frame 11, the first baffle 14 and the second baffle 15 are curved surfaces. During the operation of the heat exchange core, the baffle can block the wind in this direction, so that only the required wind can enter the heat exchange unit 10, so as to ensure the smooth heat exchange of fresh air and return air.

[0040] The first baffle 14 and the second baffle 15 are both flexible folding baffles, so that the baffles can change synchronously with the change of the height of the heat exchange unit 10 .

[0041] The surfaces where the first baffle 14 and the second baffle 15 of adjacent heat exchange units 10 are located are all different surfaces. That is to say, there is a certain angle between the first baffle 14 and the second baffle 15 of adjacent heat exchange units 10, so that the two kinds of air that need to be heated can enter the core through the corresponding channels for smooth heat exchange.

[0042] Preferably, as Figure 1 shown, the angle between the first baffles 14 of adjacent heat exchange units 10 is 90 degrees, and the angle between the second baffles 15 of adjacent heat exchange units 10 is 90 degrees. Each heat exchange unit 10 has a duct through which air can pass, and the other duct is blocked by a baffle and cannot ventilate. The adjacent heat exchange units 10 are installed with a 90-degree stagger angle, so that the air flow directions of the adjacent heat exchange units 10 are perpendicular, which can enable the fresh air and the return air to enter the core for more sufficient heat exchange.

[0043] As Figure 2 shown, the heat exchange unit 10 may further include: a pressure-sensitive sensing element 16, installed on the heat exchange membrane 12, for monitoring the air pressure of the heat exchange unit 10. By monitoring the air pressure, the height of the heat exchange unit 10 can be adjusted according to the air pressure to achieve the purpose of a uniform air field.

[0044] In one embodiment, as Figure 1 shown, the heat exchange core may further include: an end storage device 20, located at the end of the heat exchange core, for storing idle heat exchange units 10. In practical applications, sometimes it is necessary to adjust the height of the heat exchange unit 10 to a relatively high level. At this time, the number of heat exchange units 10 for heat exchange will be relatively small. The heat exchange units 10 at the end of the heat exchange core do not need to perform heat exchange and are in an idle state. The idle heat exchange units 10 can be stored by the end storage device 20. Specifically, the heat exchange units 10 that are not needed at the end of the heat exchange core are adjusted to the minimum height and placed in the end storage device 20 in a contracted manner. When the height of the heat exchange units 10 that are performing heat exchange needs to be reduced, as the height changes, the heat exchange units 10 located in the end storage device 20 will come out of the end storage device 20 in sequence, and then the height of the heat exchange units 10 can be controlled according to actual needs. Embodiment 2

[0045] This embodiment provides a fresh air device, including: the heat exchange core described in the above embodiment.

[0046] The fresh air device of this embodiment adjusts the height of the heat exchange unit 10 through the adjustment mechanism 13, so that the gap distance between two adjacent heat exchange membranes 12 changes, and thus, at a certain wind speed and time, the air volume passing through this gap changes, achieving the purpose of adjusting the air field, enabling the air field to be uniform, ensuring sufficient heat exchange between the fresh air and the return air, and avoiding a decline in heat exchange performance. Embodiment 3

[0047] This embodiment provides a wind field adjustment method, which can be implemented based on the heat exchange core described in the above embodiment.

[0048] Figure 3 It is a flowchart of the wind field adjustment method provided in Embodiment 3 of the present invention. As Figure 3 shown, the method includes the following steps:

[0049] S301, obtain the current wind pressure of each heat exchange unit 10 in the heat exchange core.

[0050] S302, according to the current wind pressure and the target wind pressure of the heat exchange unit 10, adjust the height of the heat exchange unit 10 so that the deviation between the wind pressure of the heat exchange unit 10 and the target wind pressure is less than or equal to a preset threshold.

[0051] Among them, the heat exchange core includes at least one heat exchange unit 10, and the heat exchange unit 10 includes: a heat exchange membrane 12 and an adjustment mechanism 13. The adjustment mechanism 13 is used to adjust the height of the heat exchange unit 10 in the direction perpendicular to the plane where the heat exchange membrane 12 is located; the heat exchange membranes 12 of each heat exchange unit 10 are arranged in parallel in sequence.

[0052] The wind pressure of the heat exchange unit 10 can reflect the air volume passing through the heat exchange unit 10. The target wind pressure represents the target value for achieving a uniform wind field. The deviation between the wind pressure of each heat exchange unit 10 and the target wind pressure is less than or equal to the preset threshold, indicating that the wind pressure of each heat exchange unit 10 is in a relatively balanced state and the wind field is uniform. The preset threshold can be set according to the actual situation. For example, the preset threshold can be set to 0.2 kN / m 2 . Adjusting the height of the heat exchange unit 10 can change the gap between the heat exchange membranes 12. When the air volume is constant, the change in the gap between the heat exchange membranes 12 will cause a change in the wind pressure, thereby changing the wind field.

[0053] The wind field adjustment method of this embodiment adjusts the height of the heat exchange unit 10 according to the current wind pressure and the target wind pressure of the heat exchange unit 10 in the heat exchange core, so that the deviation between the wind pressure of the heat exchange unit 10 and the target wind pressure is less than or equal to the preset threshold, and can adjust the wind field automatically according to the wind pressure, making the wind field uniformity of the two kinds of winds (such as fresh air and return air) that need heat exchange very high, the heat exchange is more sufficient, and the heat exchange efficiency is higher.

[0054] Obtaining the current wind pressure of each heat exchange unit 10 in the heat exchange core includes: obtaining the current wind pressure of the heat exchange unit 10 through a pressure-sensitive sensing element 16, where the pressure-sensitive sensing element 16 is installed on the heat exchange membrane 12 of the heat exchange unit 10. The wind pressure can be simply and accurately obtained through the pressure-sensitive sensing element 16.

[0055] It should be noted that the height of each heat exchange unit 10 can be adjusted simultaneously; or the height of each heat exchange unit 10 can be adjusted one by one in a certain order, that is, after adjusting one heat exchange unit 10, then adjusting the next heat exchange unit 10 until all heat exchange units 10 are adjusted.

[0056] In one embodiment, according to the current wind pressure and the target wind pressure of the heat exchange unit 10, the height of the heat exchange unit 10 is adjusted so that the deviation between the wind pressure of the heat exchange unit 10 and the target wind pressure is less than or equal to a preset threshold, including: judging whether the deviation between the current wind pressure and the target wind pressure of the heat exchange unit 10 is greater than the preset threshold; if the deviation is greater than the preset threshold, then according to the magnitudes of the current wind pressure and the target wind pressure of the heat exchange unit 10, the height of the heat exchange unit 10 is adjusted so that the deviation is less than or equal to the preset threshold; if the deviation is less than or equal to the preset threshold, then the current height of the heat exchange unit 10 remains unchanged.

[0057] Among them, the deviation between the wind pressure of the heat exchange unit 10 and the target wind pressure being greater than the preset threshold means that the wind pressure of the heat exchange unit 10 is quite different from the target wind pressure and the wind field uniformity is poor. The deviation between the wind pressure of the heat exchange unit 10 and the target wind pressure being less than or equal to the preset threshold means that the wind pressure of the heat exchange unit 10 is not much different from the target wind pressure, the wind field uniformity is better, and it meets the requirements.

[0058] Based on the deviation between the current wind pressure and the target wind pressure of the heat exchange unit 10, this embodiment can reliably and accurately adjust the height of the heat exchange unit 10 to provide guarantee for a uniform wind field.

[0059] Furthermore, according to the magnitudes of the current wind pressure and the target wind pressure of the heat exchange unit 10, adjusting the height of the heat exchange unit 10 includes: if the current wind pressure of the heat exchange unit 10 is greater than the target wind pressure, then increasing the height of the heat exchange unit 10; if the current wind pressure of the heat exchange unit 10 is less than the target wind pressure, then decreasing the height of the heat exchange unit 10.

[0060] Among them, regarding increasing the height of the heat exchange unit 10 and decreasing the height of the heat exchange unit 10, the height of the heat exchange unit 10 can be increased or decreased by a certain amplitude. After each increase or decrease, continue to monitor whether the deviation between the current wind pressure and the target wind pressure of the heat exchange unit 10 is less than or equal to the preset threshold. If it still does not meet the requirements, then adjust it again. Repeat this cycle until the difference between the wind pressure of the heat exchange unit 10 and the target wind pressure is less than or equal to the preset threshold. It is also possible to pre - establish the corresponding relationship between the wind pressure and the height adjustment amount through experiments. In practical applications, according to the difference between the wind pressure of the heat exchange unit 10 and the target wind pressure, obtain the height adjustment amount corresponding to this difference and adjust the wind pressure in one step without repeated monitoring and calculation.

[0061] In this embodiment, when the current air pressure of the heat exchange unit 10 is greater than the target air pressure, the height of the heat exchange unit 10 is increased. When the air volume is constant, the larger the gap between the heat exchange membranes 12, the smaller the air pressure, so that the air pressure of the heat exchange unit 10 can be reduced; when the current air pressure of the heat exchange unit 10 is less than the target air pressure, the height of the heat exchange unit 10 is decreased. When the air volume is constant, the smaller the gap between the heat exchange membranes 12, the larger the air pressure, so that the air pressure of the heat exchange unit 10 can be increased; thus, the air pressure of the heat exchange unit 10 is made close to the target air pressure, so as to achieve the purpose of uniform wind field.

[0062] In one embodiment, before adjusting the height of the heat exchange unit 10 according to the current air pressure and the target air pressure of the heat exchange unit 10, it further includes: calculating the average value of the current air pressures of all the heat exchange units 10 as the target air pressure. Taking the average value as the target air pressure can simply obtain a reliable target value to quickly uniform the wind field.

[0063] Considering that over time, dust will accumulate, forming a flocculent blockage on the heat exchange membrane 12 and in the air duct, resulting in a decrease in the heat exchange performance of the heat exchange core. To solve this problem, this embodiment can perform self-cleaning of the core through the adjustment mechanism 13.

[0064] Specifically, before adjusting the height of the heat exchange unit 10 according to the current air pressure and the target air pressure of the heat exchange unit 10, it further includes: judging whether there is a self-cleaning requirement; if so, controlling the adjustment mechanism 13 of the heat exchange unit 10 with the self-cleaning requirement to expand and contract a preset number of times according to a preset expansion and contraction degree; controlling the fan to be turned on for a preset time.

[0065] Among them, the self-cleaning requirement can be judged by time or current. For example, self-cleaning is performed regularly at a certain period. When this period is reached, it is determined that there is a self-cleaning requirement; another example is to monitor the operating current. When the operating current is lower than the current threshold, it is considered that there is a blockage and self-cleaning is required. It is also possible to determine whether there is a self-cleaning requirement according to a user instruction. For example, when a self-cleaning instruction from the user is received, it is determined that self-cleaning is required.

[0066] The heat exchange unit 10 with the self-cleaning requirement can be all the heat exchange units 10 or some of the heat exchange units 10. Since the usage conditions of each heat exchange unit 10 are different, for example, the usage frequency of the heat exchange unit 10 at the end of the core may be lower than that of the heat exchange unit 10 in the middle of the core, so only some of the heat exchange units 10 can be self-cleaned.

[0067] The preset expansion and contraction degree includes an expansion threshold and a contraction threshold. The expansion threshold corresponds to the adjustment mechanism 13 increasing the height of the heat exchange unit 10, and the contraction threshold corresponds to the adjustment mechanism 13 decreasing the height of the heat exchange unit 10. Generally speaking, the value of the expansion threshold is relatively large, even can be the maximum value, and the value of the contraction threshold is relatively small, even can be the minimum value. The preset number of times can be set according to the actual situation. For example, the preset number of times is set to 5 times. The adjustment mechanism 13 expands and contracts according to the preset expansion and contraction degree for the preset number of times, that is, the adjustment mechanism 13 repeatedly performs the actions of expansion - contraction - expansion - contraction. By expanding and contracting significantly for the preset number of times, the flocculent structure formed on the core air duct and the heat exchange membrane 12 can be destroyed, and the dust on the heat exchange membrane 12 and in the air duct can be shaken off. The preset time can be set according to the actual needs. For example, the preset time is set to 3 minutes. After shaking off the dust, the fan is turned on, which can blow away the shaken - off dust, achieving the purpose of cleaning the dust.

[0068] In this embodiment, when there is a need for self - cleaning, the adjustment mechanism 13 is controlled to perform "contraction" and "expansion" for the preset number of times according to the preset expansion and contraction degree to shake off the dust on the heat exchange membrane 12 and in the air duct. Then the fan is turned on for the preset time to further clean the shaken - off dust. Through the cooperation of the adjustment mechanism 13 and the fan, the self - cleaning of the heat exchange core is realized, and the problems of low air volume and low heat exchange efficiency caused by dust accumulation and blockage are solved. At the same time, after the adjustment mechanism 13 finishes its action, then turning on the fan can avoid the problem that when the fan is running, the adjustment mechanism 13 needs to overcome the wind force to perform the action, which is likely to cause damage to the device structure.

[0069] The above - mentioned wind field adjustment method will be described below with a specific embodiment. However, it should be noted that this specific embodiment is only for better explaining the present application and does not constitute an improper limitation to the present application. The same or corresponding term explanations as in the above - mentioned embodiments will not be repeated in this embodiment. This embodiment will be described taking the telescopic mechanism as an example.

[0070] As Figure 4 shown, it is a specific control flow chart of the wind field adjustment method, including the following steps:

[0071] S401, the device is turned on.

[0072] S402, after the fan is turned on, the pressure - sensitive sensing elements 16 of each heat exchange unit 10 start to detect the measured wind pressure value Pi of each heat exchange unit 10.

[0073] S403, calculate the average value P of each measured wind pressure value Pi as the adjustment target.

[0074] S404, determine whether there is a need for self - cleaning. If yes, enter S405; if no, enter S407.

[0075] S405, control the fan to remain in the closed state, and control the telescopic mechanism to perform the extreme "shrink" and "extend" actions n times to shake off the dust on the heat exchange membrane 12 and the dust in the channel.

[0076] S406, turn on the fan for m minutes to clean and blow away the dust, and then proceed to S407.

[0077] S407, calculate the deviation between the measured wind pressure value Pi of the heat exchange unit 10 and P. When the deviation is less than or equal to A, proceed to S408; when the deviation is greater than A, proceed to S409.

[0078] S408, maintain the current height gap of the heat exchange unit 10, that is, the telescopic mechanism does not perform telescopic actions, and adjust the next heat exchange unit 10.

[0079] S409, determine whether Pi > P is satisfied. If so, proceed to S410; if not, proceed to S411.

[0080] S410, the telescopic mechanism executes the extension instruction, and then returns to S407 to continue judging the deviation between Pi and P until the deviation is less than or equal to A. After the adjustment of this heat exchange unit 10 is completed, adjust the next heat exchange unit 10 until the adjustment of all heat exchange units 10 is completed.

[0081] S411, the telescopic mechanism executes the contraction instruction, and then returns to S407 to continue judging the deviation between Pi and P until the deviation is less than or equal to A. After the adjustment of this heat exchange unit 10 is completed, adjust the next heat exchange unit 10 until the adjustment of all heat exchange units 10 is completed.

[0082] In this embodiment, the heat exchange unit 10 with adjustable height is used to form an adaptive core, enabling the heat exchange layer height of the core to be flexibly adjusted according to requirements. Thus, according to the uneven characteristics of the wind field, the gap between the heat exchange membranes 12 can be adjusted to regulate the wind field to make it uniform. The real-time wind pressure of each heat exchange unit 10 in the wind field is detected by the pressure-sensitive sensing element 16, the target wind pressure is calculated, and the height adjustment strategy is executed according to the deviation between the actual wind pressure and the target wind pressure to automatically adjust the wind field. As a result, the uniformity of the fresh air return wind field is very high, the heat exchange is more sufficient, and the heat exchange efficiency is higher, solving the problem of low heat exchange efficiency caused by the uneven wind field of medium and large fresh air units, realizing the adaptive adjustment of the wind field, and ensuring efficient heat exchange. At the same time, the core executes the self-cleaning logic, solving the problem of low air volume and low heat exchange efficiency caused by the dust-like blockage in the core air duct. Embodiment 4

[0083] This embodiment provides a computer device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the steps of the method described in the above embodiment are implemented. Example 5

[0084] This embodiment provides a non - volatile computer - readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in the above - mentioned embodiment are implemented.

[0085] Through the description of the above - mentioned implementation manners, those skilled in the art can clearly understand that each implementation manner can be realized by means of software plus a necessary general - purpose hardware platform, and of course, it can also be realized by hardware. Based on such an understanding, the essence of the above - mentioned technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer - readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0086] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. A heat exchange core, characterized in that, Comprising: At least one heat exchange unit; The heat exchange unit includes: a heat exchange membrane and an adjustment mechanism; The adjustment mechanism is used to adjust the height of the heat exchange unit in a direction perpendicular to the plane where the heat exchange membrane is located; The heat exchange membranes of each heat exchange unit are arranged in parallel in sequence; The heat exchange unit further includes: a pressure-sensitive sensing element, installed on the heat exchange membrane, for monitoring the wind pressure of the heat exchange unit; adjusting the height of the heat exchange unit according to the current wind pressure and the target wind pressure of the heat exchange unit, so that the deviation between the wind pressure of the heat exchange unit and the target wind pressure is less than or equal to a preset threshold; the gaps between adjacent heat exchange membranes form air ducts for air flow, and the air flow directions passing through adjacent air ducts are perpendicular.

2. The heat exchange core according to claim 1, characterized in that The heat exchange unit further includes: a main body frame; the heat exchange membrane is installed on the main body frame; the adjustment mechanism is installed on the main body frame.

3. The heat exchange core according to claim 2, characterized in that, When the heat exchange core includes more than two heat exchange units, the more than two heat exchange units are sequentially connected through their respective main body frames.

4. The heat exchange core according to claim 1, wherein, The adjustment mechanism is a telescopic mechanism.

5. The heat exchange core according to claim 2, wherein, The heat exchange unit further includes: a first baffle and a second baffle, respectively installed on two specified opposite surfaces of the main body frame.

6. The heat exchange core according to claim 5, characterized in that, Both the first baffle and the second baffle are flexible folding baffles.

7. The heat exchange core according to claim 5, characterized in that, The surfaces where the first baffles and the second baffles of adjacent heat exchange units are located are all different surfaces.

8. The heat exchange core according to claim 7, wherein, The angle between adjacent first baffles of adjacent heat exchange units is 90 degrees, and the angle between adjacent second baffles of adjacent heat exchange units is 90 degrees.

9. The heat exchange core according to any one of claims 1 to 8, characterized in that, The heat exchange core further includes: An end storage device, located at the end of the heat exchange core, for storing idle heat exchange units.

10. A fresh air device, characterized in that, Comprising: The heat exchange core according to any one of claims 1 to 9.

11. A wind field regulation method, characterized in that, Comprising: Obtain the current wind pressure of each heat exchange unit in the heat exchange core; According to the current wind pressure and the target wind pressure of the heat exchange unit, adjust the height of the heat exchange unit, so that the deviation between the wind pressure of the heat exchange unit and the target wind pressure is less than or equal to a preset threshold; Wherein, the heat exchange core includes at least one heat exchange unit, the heat exchange unit includes: a heat exchange membrane and an adjustment mechanism, the adjustment mechanism is used to adjust the height of the heat exchange unit in a direction perpendicular to the plane where the heat exchange membrane is located; the heat exchange membranes of each heat exchange unit are arranged in parallel in sequence; the gaps between adjacent heat exchange membranes form air ducts for air flow, and the air flow directions passing through adjacent air ducts are perpendicular.

12. The method according to claim 11, wherein According to the current wind pressure and the target wind pressure of the heat exchange unit, adjusting the height of the heat exchange unit, so that the deviation between the wind pressure of the heat exchange unit and the target wind pressure is less than or equal to a preset threshold, includes: Judge whether the deviation between the current wind pressure of the heat exchange unit and the target wind pressure is greater than the preset threshold; If the deviation is greater than the preset threshold, then adjust the height of the heat exchange unit according to the magnitudes of the current wind pressure and the target wind pressure of the heat exchange unit, so that the deviation is less than or equal to the preset threshold; If the deviation is less than or equal to the preset threshold, then keep the current height of the heat exchange unit unchanged.

13. The method according to claim 12, wherein According to the magnitudes of the current wind pressure and the target wind pressure of the heat exchange unit, adjusting the height of the heat exchange unit includes: If the current wind pressure of the heat exchange unit is greater than the target wind pressure, increase the height of the heat exchange unit; If the current wind pressure of the heat exchange unit is less than the target wind pressure, decrease the height of the heat exchange unit.

14. The method according to claim 11, wherein Before adjusting the height of the heat exchange unit according to the current wind pressure and the target wind pressure of the heat exchange unit, it further includes: Calculate the average value of the current wind pressures of all heat exchange units as the target wind pressure.

15. The method according to any one of claims 11 to 14, characterized in that Before adjusting the height of the heat exchange unit according to the current wind pressure and the target wind pressure of the heat exchange unit, it further includes: Judge whether there is a need for self-cleaning; If so, control the adjustment mechanism of the heat exchange unit with self-cleaning needs to expand and contract a preset number of times according to a preset expansion and contraction degree; Control the fan to turn on for a preset time.

16. The method according to any one of claims 11 to 14, characterized in that, Obtain the current wind pressure of each heat exchange unit in the heat exchange core, including: Obtain the current wind pressure of the heat exchange unit through a piezoresistive sensing element, where the piezoresistive sensing element is installed on the heat exchange membrane of the heat exchange unit.

17. A computer device, comprising: A memory, a processor, and a computer program stored on the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method according to any one of claims 11 to 16 are implemented.

18. A non-volatile computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, the steps of the method according to any one of claims 11 to 16 are implemented.

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