Fresh air device and control method thereof, air conditioner

Abstract

The present invention provides a fresh air device and a control method thereof, and an air conditioner, wherein the fresh air device comprises: a shell, an air duct is formed inside the shell; a partition, the partition is movably arranged in the shell, and the partition constitutes at least part of the side wall of the air duct; an air duct adjustment mechanism, the air duct adjustment mechanism is connected to the partition, and the air duct adjustment mechanism can adjust the position of the partition to adjust the shape of the air duct. The present invention solves the problem in the prior art that the heat exchange efficiency of the fresh air device is affected by the uneven wind field, ensures the uniformity of the internal flow field, and greatly improves the total heat exchange efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of air treatment equipment, and in particular to a fresh air device and a control method thereof, and an air conditioner. Background Art

[0002] Fresh air devices are currently widely used in green buildings, transportation hubs, education, medical and other civil comfort occasions. At present, the air ducts of medium and large fresh air units are mostly separated from each other, which makes it impossible to arrange the fan in the center, thus forming an extremely uneven wind field. The effective utilization rate of core components such as the full heat core, which has high requirements for wind field uniformity, is low, affecting the heat exchange efficiency of the fresh air device. Summary of the invention

[0003] In order to solve the technical problem in the prior art that the uneven wind field affects the heat exchange efficiency of the fresh air device, a fresh air device and a control method thereof and an air conditioner are provided for adjusting the wind field by adjusting the shape of the air duct.

[0004] A fresh air device, comprising:

[0005] A housing, wherein an air duct is formed inside the housing;

[0006] a partition, the partition being movably disposed in the housing and constituting at least a portion of a side wall of the air duct;

[0007] The air duct adjustment mechanism is connected to the partition plate, and the air duct adjustment mechanism can adjust the position of the partition plate to adjust the shape of the air duct.

[0008] The air duct adjustment mechanism adjusts the inclination of the partition.

[0009] The partition includes a first partition and a second partition, the first partition and the second partition respectively constitute part of the side wall of the air duct, the air duct adjustment mechanism is connected between the first partition and the second partition, and the air duct adjustment mechanism can adjust the position of the first partition and the position of the second partition.

[0010] The fresh air device also includes a heat exchange core, which is located in the air duct, and the first partition is located above the heat exchange core, and the second partition is located below the heat exchange core.

[0011] The air duct adjustment mechanism includes a first telescopic mechanism and a second telescopic mechanism, wherein the first telescopic mechanism is located at a first end of the partition, and the second telescopic mechanism is located at a second end of the partition.

[0012] The fresh air device also includes a heat exchange core, which is arranged in the air duct and is deformable.

[0013] The fresh air device also includes a seal, which is arranged on the partition and can be sealed and matched with the heat exchange core.

[0014] The heat exchange core comprises:

[0015] Retractable frame;

[0016] A heat exchange membrane, wherein the heat exchange membrane is arranged on the retractable frame;

[0017] The retractable frame can be retracted and deformed in the direction of the plane where the heat exchange membrane is located, and the heat exchange membrane is deformed simultaneously with the deformation of the retractable frame.

[0018] The retractable frame includes a plurality of frames, each of which constitutes a part of the retractable frame, and the length of the frames is adjustable.

[0019] The heat exchange core also includes a frame adjustment mechanism, which is connected to the frame and is used to adjust the length of the frame.

[0020] The frame adjustment mechanism includes a base and a radial telescopic mechanism, the base is located in the middle of the telescopic frame, the first end of the radial telescopic mechanism is arranged on the base, and the second end of the radial telescopic mechanism is arranged on the frame.

[0021] The frame includes a telescopic sleeve structure; or the frame is made of a flexible material.

[0022] There are multiple retractable frames, all of which are arranged in parallel, the heat exchange membranes correspond to the retractable frames one by one, and a heat exchange air duct is formed between two adjacent heat exchange membranes.

[0023] The retractable frame is provided with an air outlet communicated with the corresponding heat exchange air duct, and the air outlets of two adjacent retractable frames are arranged in staggered directions.

[0024] A method for controlling a fresh air device is applied to the fresh air device as described above, the method comprising:

[0025] Detecting the pressure parameters of the heat exchange core of the fresh air device;

[0026] The shape of the air duct is adjusted according to the pressure parameter and the heat exchange core is controlled to deform.

[0027] The pressure parameter at least includes the pressure value of each heat exchange unit of the heat exchange core; adjusting the shape of the air duct according to the pressure parameter and controlling the heat exchange core to deform, including:

[0028] Get the preset target pressure value;

[0029] adjusting the shape of the air duct according to the preset target pressure value and the pressure values ​​of each heat exchange unit;

[0030] The heat exchange core is controlled to deform according to the preset target pressure value and the pressure values ​​of each heat exchange unit.

[0031] Adjusting the shape of the air duct according to the preset target pressure value and the pressure values ​​of each heat exchange unit includes:

[0032] Detect the pressure value P1 of the first heat exchange unit close to the fan side;

[0033] When the pressure value P1 is greater than the preset target pressure value A, the two telescopic mechanisms of the air duct adjustment mechanism are controlled to perform telescopic adjustment until the pressure value P1 is less than or equal to the preset target pressure value A;

[0034] When the pressure value P1 is less than or equal to the preset target pressure value A, the shape of the air duct is adjusted according to the pressure values ​​of the respective heat exchange units and the preset target pressure value A.

[0035] Adjusting the shape of the air duct according to the pressure values ​​of each heat exchange unit and the preset target pressure value A includes:

[0036] Calculate the difference proportional coefficient B between the pressure value Pi of each heat exchange unit and the preset target pressure value A; wherein B = |Pi-A| / A;

[0037] When the difference proportional coefficient B is greater than the preset coefficient n, the telescopic mechanism of the air duct adjustment mechanism away from the air duct side is controlled to perform telescopic adjustment until the difference proportional coefficient B is less than or equal to the preset coefficient n;

[0038] When the difference proportional coefficient B is less than or equal to the preset coefficient n, it is triggered to control the heat exchange core to deform according to the preset target pressure value and the average pressure value of each heat exchange unit.

[0039] Controlling the heat exchange core to deform according to the preset target pressure value and the pressure values ​​of each heat exchange unit includes:

[0040] Calculating the average pressure value of each heat exchange unit;

[0041] The heat exchange core is controlled to deform according to the pressure values ​​of the respective heat exchange units and the average pressure value.

[0042] Controlling the heat exchange core to deform according to the pressure values ​​of the respective heat exchange units and the average pressure value comprises:

[0043] Calculating the absolute value of the difference between the pressure value Pi of each heat exchange unit and the average pressure value P;

[0044] When the absolute value of the difference is less than or equal to a preset value, the heat exchange unit is not adjusted;

[0045] When the absolute value of the difference is greater than the preset value, the pressure value Pi of each heat exchange unit is compared with the average pressure value P, and the heat exchange core is controlled to deform according to the comparison result.

[0046] Controlling the heat exchange core to deform according to the comparison result includes:

[0047] When the pressure value Pi of the heat exchange unit is greater than the average pressure value P, the heat exchange unit is controlled to contract until the absolute value of the difference between the pressure value Pi of the heat exchange unit and the average pressure value P is less than or equal to the preset value;

[0048] When the pressure value Pi of the heat exchange unit is less than the average pressure value P, the heat exchange unit is controlled to relax until the absolute value of the difference between the pressure value Pi of the heat exchange unit and the average pressure value P is less than or equal to the preset value.

[0049] An air conditioner comprises the above-mentioned fresh air device or applies the above-mentioned fresh air device control method.

[0050] A storage medium containing computer executable instructions, wherein the computer executable instructions are used to execute the above-mentioned fresh air device control method when executed by a computer processor.

[0051] The fresh air device and the fresh air device control method provided by the present invention can flexibly adjust the wind field in the fresh air device according to the flow field distribution by adjusting the position of the partition, thereby ensuring the uniformity of the internal flow field and greatly improving the total heat exchange efficiency. At the same time, the heat exchange core can be deformed to achieve secondary uniform adjustment of the windward surface and the wind field, further improving the heat exchange efficiency and reducing wind resistance, making the wind field extremely uniform, and greatly reducing the core material utilization rate and product energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A schematic diagram of the structure of a fresh air device according to an embodiment of the present invention;

[0053] Figure 2 A schematic diagram of the internal structure of a fresh air device according to an embodiment of the present invention;

[0054] Figure 3 A schematic structural diagram of a heat exchange core according to an embodiment of the present invention;

[0055] Figure 4 It is a schematic structural diagram of a telescopic frame and a radial telescopic mechanism according to an embodiment of the present invention;

[0056] Figure 5 is an optional flow chart of a fresh air device control method provided according to an embodiment of the present invention;

[0057] Figure 6 This is another optional flow chart of the fresh air device control method provided according to an embodiment of the present invention.

[0058] In the figure:

[0059] 1. Shell; 11. Air duct; 2. Partition; 21. First partition; 22. Second partition; 3. Heat exchange core; 41. First telescopic mechanism; 5. Sealing element; 31. Telescopic frame; 32. Heat exchange membrane; 33. Frame; 34. Radial telescopic mechanism; 35. Base; 36. Air outlet. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0061] like Figures 1 to 4 The fresh air device shown comprises: a housing 1, wherein an air duct 11 is formed inside the housing 1; a partition 2, wherein the partition 2 is movably arranged inside the housing 1, and the partition 2 constitutes at least part of the side wall of the air duct 11; and an air duct adjustment mechanism, wherein the air duct adjustment mechanism is connected to the partition 2, and the air duct adjustment mechanism can adjust the position of the partition 2 to adjust the shape of the air duct 11. By adjusting the position of the partition 2, the purpose of flexibly adjusting the wind field in the fresh air device according to the flow field distribution is achieved, which effectively overcomes the problem of the uneven wind field formed due to the inability to arrange the fan in the center in the prior art, ensures the uniformity of the internal flow field, and greatly improves the total heat exchange efficiency. Wherein the partition 2 can be moved to any position to seal with the corresponding structure to form a relatively sealed air duct 11. Preferably, the shape of the air duct 11 is wedge-shaped, and the wedge-shaped cross-sectional area of ​​the air duct 11 close to the fan is larger, while the wedge-shaped cross-sectional area of ​​the air duct 11 away from the fan is smaller.

[0062] A fresh air duct and a return air duct are formed inside the shell, and the intersection of the fresh air duct and the return air duct constitutes an air duct 11.

[0063] A fresh air inlet, a fresh air outlet, a return air inlet and a return air outlet are respectively formed on the shell. The fresh air inlet and the fresh air outlet are connected by a fresh air duct, and the return air inlet and the return air outlet are connected by the return air duct. The gas in the fresh air duct and the gas in the return air duct will exchange heat in the heat exchange core in the air duct 11.

[0064] A fresh air fan is arranged in the fresh air duct, and a return air fan is arranged in the return air duct.

[0065] The air duct adjustment mechanism adjusts the inclination of the partition 2. The inclination of the partition 2 refers to the inclination level of the plane where the partition 2 is located relative to the horizontal plane, and more specifically refers to the angle between the length direction of the partition 2 and the horizontal direction.

[0066] The partition 2 includes a first partition 21 and a second partition 22, the first partition 21 and the second partition 22 respectively constitute part of the side wall of the air duct 11, the air duct adjustment mechanism is connected between the first partition 21 and the second partition 22, and the air duct adjustment mechanism can adjust the position of the first partition 21 and the position of the second partition 22. The positions of the first partition 21 and the second partition 22 are adjusted according to the specific needs of the air duct 11, thereby increasing the adjustment accuracy of the shape of the air duct 11.

[0067] As another embodiment, the second partition plate 22 is relatively fixed, while the first partition plate 21 and the heat exchange core can be displaced relative to the second partition plate 22, thereby ultimately achieving the purpose of adjusting the air duct 11.

[0068] The fresh air device further includes a heat exchange core 3, which is located in the air duct 11, and the first partition 21 is located above the heat exchange core 3, and the second partition 22 is located below the heat exchange core 3. That is, the first partition 21 forms the upper side wall of the air duct 11 in the vertical direction, and the second partition 22 forms the lower side wall of the air duct 11 in the vertical direction. By adjusting the upper side wall and the lower side wall of the air duct 11 together, the cross section of the air duct 11 can be adjusted while ensuring that the spacing between the inner surface of the air duct 11 and the heat exchange core 3 is uniform, thereby further increasing the uniformity of the wind field.

[0069] The air duct adjustment mechanism includes a first telescopic mechanism 41 and a second telescopic mechanism (not shown in the figure), wherein the first telescopic mechanism 41 is located at the first end of the partition 2, and the second telescopic mechanism is located at the second end of the partition 2. That is, the first telescopic mechanism 41 adjusts the height of the first end of the partition 2, and the second telescopic mechanism adjusts the height of the second end of the partition 2. Since the partition 2 is a plate-like structure, when there is a height difference between the first end and the second end, the partition 2 will inevitably tilt, thereby achieving the adjustment of the shape of the air duct 11.

[0070] The fresh air device further includes a seal 5, which is disposed on the partition 2 and can be sealed with the heat exchange core 3. The seal 5 separates a plurality of air ducts 11 in the air duct 11 and communicates with different air ports of the heat exchange core 3, thereby ensuring reliable heat exchange of the heat exchange core 3. Preferably, the seal 5 is an air bag, which can be flexibly adjusted, so that when the distance between the air duct and the heat exchange core 3 is uneven, it can also achieve a good reliable seal between the inner surface of the air duct and the heat exchange core 3.

[0071] The fresh air device also includes a heat exchange core 3, which is arranged in the air duct 11, and the heat exchange core 3 is deformable. The deformation of the heat exchange core 3 is used to achieve secondary uniform adjustment of the windward surface and the wind field, and the wind field in the fresh air device is further adjusted to improve the heat exchange efficiency and reduce the wind resistance, so that the wind field uniformity is extremely high, and the core material utilization rate and product energy consumption are greatly reduced. Preferably, the shape of the heat exchange core 3 is similar to the shape of the air duct 11, that is, the minimum distance from the edge of the heat exchange core 3 to the inner surface of the air duct 11 is basically the same, so as to ensure a uniform wind field. For example, when the shape of the air duct 11 is wedge-shaped, the heat exchange core 3 is also deformed into a wedge shape.

[0072] The heat exchange core 3 comprises: a telescopic frame 31; a heat exchange membrane 32, wherein the heat exchange membrane 32 is arranged on the telescopic frame 31; the telescopic frame 31 can be telescopically deformed in the direction of the plane where the heat exchange membrane 32 is located, and the heat exchange membrane 32 is deformed simultaneously with the deformation of the telescopic frame 31. The shape of the heat exchange core 3 is changed by using the deformation of the telescopic frame 31 (the cross section of the telescopic frame 31 is increased or reduced), and at the same time, in order to ensure that the heat exchange membrane 32 will not be deformed by the deformation of the telescopic frame 311, the heat exchange membrane 32 is configured to be deformed simultaneously with the deformation of the telescopic frame 311, thereby ensuring the reliability of the structure of the heat exchange membrane 32. The deformation of the heat exchange membrane 32 may be that the heat exchange membrane 32 is made of flexible material and deforms itself; the deformation of the heat exchange membrane 32 may also be that part of the heat exchange membrane 32 is accommodated in the retractable frame 311 or part of the heat exchange membrane 32 is accommodated by folding or the like. When the heat exchange membrane 32 needs to be deformed, the accommodated part of the heat exchange membrane 32 can stretch as the retractable frame 31 deforms to achieve the purpose of deformation.

[0073] The retractable frame 31 includes a plurality of frames 33, each of which constitutes a part of the retractable frame 31, and the length of the frames 33 is adjustable. The frames 33 are connected at the ends in the length direction, and when the length of the frames 33 changes, the retractable frame 31 will inevitably deform.

[0074] The heat exchange core 3 further includes a frame adjustment mechanism, each of which is connected to the frame 33, and the frame adjustment mechanism is used to adjust the length of the frame 33. Through the control of the frame adjustment mechanism, the length adjustment of the frame 33 is controllable, and a power source can be provided for the length adjustment of the frame 33. The frame adjustment mechanism can also provide support for the frame 33 to ensure that the position of the frame 33 is reliable.

[0075] The frame adjustment mechanism includes a base 35 and a radial telescopic mechanism 34, wherein the base 35 is located in the middle of the telescopic frame 31, the first end of the radial telescopic mechanism 34 is arranged on the base 35, and the second end of the radial telescopic mechanism 34 is arranged on the frame 33. By changing the length of the radial telescopic mechanism 34, the corresponding position of the frame 33 is driven to move, thereby achieving the purpose of stretching the frame 33. Preferably, the radial telescopic mechanism 34 is hingedly arranged on the base 35, and the radial telescopic mechanism 34 and the frame 33 are also hingedly arranged, so as to ensure that after the length of the frame 33 changes, the radial telescopic mechanism 34 is still reliably connected with the base 35 and the frame 33.

[0076] Optionally, the number of the frame 33 is four, the four frames 33 together enclose the telescopic frame 31, and a connection position is formed between two adjacent frames 33, the number of the radial telescopic mechanisms 34 is four, and the second end of one radial telescopic mechanism 344 is correspondingly arranged at one of the connection positions. That is, the cross-section of the telescopic frame 311 at this time is a rectangle, and the second ends of the radial telescopic mechanisms 34 are connected to the top corners of the rectangle. When the position of the second end of the radial telescopic mechanism 34 changes, the two sides of the rectangle can be driven to telescope at the same time, and the second end of the radial telescopic mechanism 34 is connected to the top corner of the rectangle, which can further ensure the reliability of the connection between the radial telescopic mechanism 34 and the frame 33.

[0077] The radial telescopic mechanism 34 includes a telescopic seat and a telescopic rod. The telescopic rod is movably arranged on the telescopic seat and can adjust the length of the telescopic rod extending into the telescopic seat. The telescopic seat is arranged on a base 35, and the end of the telescopic rod away from the telescopic seat is connected to the frame 33.

[0078] The frame 33 includes a telescopic sleeve structure, that is, the inner sleeve is gradually pulled out from the outer sleeve or gradually retracted into the outer sleeve as needed to achieve length adjustment.

[0079] Alternatively, the frame 33 is made of a flexible material. When the length of the frame 33 is forced to change, the frame 33 can be deformed based on its own flexibility.

[0080] There are multiple retractable frames 31, all of which are arranged in parallel. The heat exchange membranes 32 correspond to the retractable frames 311 one by one, and a heat exchange channel is formed between two adjacent heat exchange membranes 32. The airflow in two adjacent heat exchange channels exchanges heat through the heat exchange membranes 32 between the two heat exchange channels. The two adjacent retractable frames 31 are sealed to ensure reliable sealing of the heat exchange channel.

[0081] When the heat exchange core 3 is deformed, each retractable frame 31 can be deformed individually, so that a more precise adjustment can be made according to the actual wind field in the shell.

[0082] The retractable frame 31 is provided with air vents 36 connected to the corresponding heat exchange channel, and the air vents 36 of two adjacent retractable frames 31 are arranged in staggered directions. That is, the airflows entering different positions (such as one air vent introducing fresh air and the other air vent introducing return air) are used to face different air vents 36, so that the airflows at different positions can be heat exchanged through the corresponding heat exchange membrane 32, and at the same time, the corresponding airflows (such as one airflow is fresh air after heat exchange and the other airflow is return air after heat exchange) are discharged through the air vents 36 facing different air vents, so as to achieve heat exchange between fresh air and return air.

[0083] Among all the frames 33 on the same retractable frame 31 , two of the frames 33 are provided with openings, and one of the openings serves as an air inlet of the heat exchange unit, and the other opening serves as an air outlet of the heat exchange unit.

[0084] The fresh air device further comprises a seal 5, which is arranged on the partition 2 and can be sealed with the deformable heat exchange core 3. Preferably, the seal 5 is an air bag, and when the heat exchange core 3 is deformed, the air bag can still ensure a reliable seal between the inner surface of the air duct and the heat exchange core 3. Furthermore, when the heat exchange core 3 is an irregular shape after deformation, the air bag can also be deformed along with the shape of the heat exchange core 3 to ensure a sealing effect.

[0085] Another aspect of the present invention provides a fresh air device control method, which is applied to the fresh air device as described above. Specifically, Figure 5 An optional flow chart of the method is shown as follows: Figure 5 As shown, the method includes the following steps S502-S504:

[0086] S502: Detecting the pressure parameters of the heat exchange core of the fresh air device;

[0087] S504: adjusting the shape of the air duct according to the pressure parameter and controlling the heat exchange core to deform.

[0088] By adjusting the shape of the air duct through pressure parameters, the purpose of flexibly adjusting the wind field in the fresh air device according to the flow field distribution is achieved, thereby ensuring the uniformity of the internal flow field and greatly improving the total heat exchange efficiency. At the same time, the heat exchange core can be deformed to achieve secondary uniform adjustment of the windward surface and the wind field, further improving the heat exchange efficiency and reducing wind resistance, making the wind field extremely uniform, and greatly reducing the utilization rate of core materials and product energy consumption.

[0089] The pressure parameter at least includes the pressure value of each heat exchange unit of the heat exchange core; adjusting the shape of the air duct and controlling the heat exchange core to deform according to the pressure parameter includes: obtaining a preset target pressure value; adjusting the shape of the air duct according to the preset target pressure value and the pressure value of each heat exchange unit; controlling the heat exchange core to deform according to the preset target pressure value and the pressure value of each heat exchange unit. The pressure value (wind pressure) is used to reflect the uniformity of the wind field, and the pressure value of the heat exchange unit is used as a parameter in the process of adjusting the air duct and the heat exchange core.

[0090] In specific implementation, the shape of the air duct is adjusted according to the preset target pressure value and the pressure values ​​of each heat exchange unit, including: detecting the pressure value P1 of the first heat exchange unit close to the fan side; the closer to the fan, the greater the pressure, so the pressure value P1 of the first heat exchange unit close to the fan side should be the highest pressure among all the heat exchange units.

[0091] When the pressure value P1 is greater than the preset target pressure value A, the two telescopic mechanisms of the air duct adjustment mechanism are controlled to perform telescopic adjustment until the pressure value P1 is less than or equal to the preset target pressure value A; when the pressure value P1 is less than or equal to the preset target pressure value A, the shape of the air duct is adjusted according to the pressure value of each heat exchange unit and the preset target pressure value A.

[0092] The shape of the air duct is adjusted according to the pressure value of each heat exchange unit and the preset target pressure value A, including: calculating the difference proportional coefficient B between the pressure value Pi of each heat exchange unit and the preset target pressure value A; wherein, B = |Pi-A| / A; when the difference proportional coefficient B is greater than the preset coefficient n, the telescopic mechanism in the air duct adjustment mechanism away from the air duct side is controlled to perform telescopic adjustment until the difference proportional coefficient B is less than or equal to the preset coefficient n; when the difference proportional coefficient B is less than or equal to the preset coefficient n, the heat exchange core is controlled to deform according to the preset target pressure value and the average pressure value of each heat exchange unit. In the above adjustment process, the pressure value Pi of each heat exchange unit is made as close to the preset target pressure value A as possible. If the pressure value Pi of each heat exchange unit is close to the preset target pressure value A, the heat exchange core is further adjusted.

[0093] The heat exchange core is controlled to deform according to the preset target pressure value and the pressure value of each heat exchange unit, including: calculating the average pressure value of each heat exchange unit; controlling the heat exchange core to deform according to the pressure value of each heat exchange unit and the average pressure value, including: calculating the absolute value of the difference between the pressure value Pi of each heat exchange unit and the average pressure value P; when the absolute value of the difference is less than or equal to the preset value, the heat exchange unit is not adjusted; when the absolute value of the difference is greater than the preset value, the pressure value Pi of each heat exchange unit is compared with the average pressure value P, and the heat exchange core is controlled to deform according to the comparison result. The average wind pressure value, that is, the average pressure value P, is calculated and used as the adjustment target. The measured value, that is, the deviation between the pressure value Pi of the heat exchange unit and P is compared. When the deviation value is less than or equal to the preset value, the current telescopic state is maintained; when the deviation is greater than the preset value, the heat exchange core is controlled to deform according to the comparison result.

[0094] Specifically, the process of controlling the heat exchange core to deform according to the comparison result includes: when the pressure value Pi of the heat exchange unit is greater than the average pressure value P, the heat exchange unit is controlled to contract until the absolute value of the difference between the pressure value Pi of the heat exchange unit and the average pressure value P is less than or equal to the preset value; when the pressure value Pi of the heat exchange unit is less than the average pressure value P, the heat exchange unit is controlled to expand until the absolute value of the difference between the pressure value Pi of the heat exchange unit and the average pressure value P is less than or equal to the preset value. If Pi>P, the contraction instruction of the heat exchange unit is executed, and the deviation comparison between Pi and P is executed at the same time, until the deviation is less than or equal to the preset value m; if Pi<P, the extension instruction of the heat exchange unit is executed, and the deviation comparison between Pi and P is executed at the same time, until the deviation is less than or equal to the preset value m; after the execution of this heat exchange unit is completed, the next heat exchange unit is executed until all heat exchange units are adjusted.

[0095] The present invention also provides another fresh air device control method, specifically, Figure 6 An optional flow chart of the method is shown as follows: Figure 6 As shown, the method includes the following steps S601-S610:

[0096] S601: Unit start;

[0097] S602: The pressure-sensitive element feeds back the measured pressure value Pi of each heat exchange unit; the pressure value of each heat exchange unit is detected by the pressure-sensitive element;

[0098] S603: Compare the pressure of the first test value on the fan side; the closer to the fan, the greater the pressure, so the pressure value P1 of the first heat exchange unit close to the fan side should be the highest pressure among all heat exchange units; if P1>A, proceed to step S604, otherwise, proceed to step S605;

[0099] S604: Synchronously extend and retract the two retractable mechanisms of the air duct; control the two retractable mechanisms of the air duct adjustment mechanism to perform retractable adjustment until the pressure value P1 is less than or equal to the preset target pressure value A;

[0100] S605: Compare the difference between the heat exchange unit pressure and the target value A, |Pi-A| / A; if |Pi-A| / A>n, proceed to step S606, otherwise, proceed to step S607;

[0101] S606: Extending and retracting the telescopic mechanism away from the air duct side; controlling the telescopic mechanism in the air duct adjustment mechanism away from the air duct side to perform telescopic adjustment until the difference ratio coefficient |Pi-A| / A is less than or equal to a preset coefficient n;

[0102] S607: Calculate the average wind pressure P;

[0103] S608: Compare the pressure Pi and P of each heat exchange unit; if |Pi-P|<m, proceed to step S609, otherwise, proceed to step S610;

[0104] S609: maintain, and perform adjustment of the next heat exchange unit;

[0105] S610: Extend the telescopic device on the telescopic flexible core; if Pi>P, execute the contraction instruction of the heat exchange unit, and at the same time perform the deviation comparison between Pi and P until the deviation is less than or equal to the preset value m; if Pi<P, execute the extension instruction of the heat exchange unit, and at the same time perform the deviation comparison between Pi and P until the deviation is less than or equal to the preset value m; after the execution of this heat exchange unit is completed, continue to execute the next heat exchange unit until all heat exchange units are adjusted.

[0106] By adjusting the position of the partition, the purpose of flexibly adjusting the wind field in the fresh air device according to the flow field distribution is achieved, thereby ensuring the uniformity of the internal flow field and greatly improving the total heat exchange efficiency. At the same time, the heat exchange core can be deformed to achieve secondary uniform adjustment of the windward surface and the wind field, further improving the heat exchange efficiency and reducing wind resistance, making the wind field extremely uniform, and greatly reducing the utilization rate of core materials and product energy consumption.

[0107] The present invention also provides an air conditioner, comprising the above-mentioned fresh air device or applying the above-mentioned fresh air device control method.

[0108] The present invention also provides a storage medium comprising computer executable instructions, wherein the computer executable instructions are used to execute the above-mentioned fresh air device control method when executed by a computer processor.

[0109] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A fresh air device, characterized in that: include: A housing (1), wherein an air duct (11) is formed inside the housing (1); A partition (2), the partition (2) being movably arranged in the shell (1), and the partition (2) constituting at least a portion of a side wall of the air duct (11); an air duct adjustment mechanism, the air duct adjustment mechanism being connected to the partition plate (2), and the air duct adjustment mechanism being capable of adjusting the position of the partition plate (2) to adjust the shape of the air duct (11); The partition (2) comprises a first partition (21) and a second partition (22), the first partition (21) and the second partition (22) respectively constituting a part of the side wall of the air duct (11), the air duct adjustment mechanism being connected between the first partition (21) and the second partition (22), and the air duct adjustment mechanism being capable of adjusting the position of the first partition (21) and the position of the second partition (22); The air duct adjustment mechanism comprises a first telescopic mechanism (41) and a second telescopic mechanism, wherein the first telescopic mechanism (41) is located at a first end of the partition plate (2), and the second telescopic mechanism is located at a second end of the partition plate (2).

2. The fresh air device according to claim 1, characterized in that: The air duct adjustment mechanism adjusts the inclination of the partition plate (2).

3. The fresh air device according to claim 1, characterized in that: The fresh air device further comprises a heat exchange core (3), wherein the heat exchange core (3) is located in the air duct (11), and the first partition plate (21) is located above the heat exchange core (3), and the second partition plate (22) is located below the heat exchange core (3).

4. The fresh air device according to claim 1, characterized in that: The fresh air device further comprises a heat exchange core (3), wherein the heat exchange core (3) is arranged in the air duct (11), and the heat exchange core (3) is deformable.

5. The fresh air device according to claim 3 or 4, characterized in that: The fresh air device further comprises a sealing member (5), wherein the sealing member (5) is arranged on the partition plate (2), and the sealing member (5) can be sealed and matched with the heat exchange core (3).

6. The fresh air device according to claim 3 or 4, characterized in that: The heat exchange core (3) comprises: retractable frame (31); A heat exchange membrane (32), wherein the heat exchange membrane (32) is arranged on the retractable frame (31); The retractable frame (31) is capable of being retracted and deformed in the direction of the plane where the heat exchange film (32) is located, and the heat exchange film (32) is deformed simultaneously with the deformation of the retractable frame (31).

7. The fresh air device according to claim 6, characterized in that: The telescopic frame (31) comprises a plurality of frames (33), each of the frames (33) constituting a portion of the telescopic frame (31), and the length of the frames (33) is adjustable.

8. The fresh air device according to claim 7, characterized in that: The heat exchange core (3) further comprises a frame adjustment mechanism, the frame adjustment mechanism is connected to the frame (33), and the frame adjustment mechanism is used to adjust the length of the frame (33).

9. The fresh air device according to claim 8, characterized in that: The frame adjustment mechanism comprises a base (35) and a radial telescopic mechanism (34); the base (35) is located in the middle of the telescopic frame (31); a first end of the radial telescopic mechanism (34) is arranged on the base (35); and a second end of the radial telescopic mechanism (34) is arranged on the frame (33).

10. The fresh air device according to claim 7, characterized in that: The frame (33) comprises a telescopic sleeve structure; or the frame (33) is made of a flexible material.

11. The fresh air device according to claim 6, characterized in that: The number of the retractable frames (31) is plural, and all the retractable frames (31) are arranged in parallel. The heat exchange membranes (32) correspond to the retractable frames (31) one by one, and a heat exchange channel is formed between two adjacent heat exchange membranes (32).

12. The fresh air device according to claim 11, characterized in that: The retractable frame (31) is provided with an air outlet (36) which is in communication with the corresponding heat exchange channel, and the air outlets (36) of two adjacent retractable frames (31) are arranged in staggered directions.

13. A method for controlling a fresh air device, applied to the fresh air device according to any one of claims 1 to 12, characterized in that: The method comprises: Detecting the pressure parameters of the heat exchange core of the fresh air device; The shape of the air duct is adjusted according to the pressure parameter and the heat exchange core is controlled to deform.

14. The method according to claim 13, characterized in that The pressure parameter at least includes the pressure value of each heat exchange unit of the heat exchange core; adjusting the shape of the air duct according to the pressure parameter and controlling the heat exchange core to deform, including: Get the preset target pressure value; adjusting the shape of the air duct according to the preset target pressure value and the pressure values ​​of each heat exchange unit; The heat exchange core is controlled to deform according to the preset target pressure value and the pressure values ​​of each heat exchange unit.

15. The method according to claim 14, characterized in that Adjusting the shape of the air duct according to the preset target pressure value and the pressure values ​​of each heat exchange unit includes: Detect the pressure value P1 of the first heat exchange unit close to the fan side; When the pressure value P1 is greater than the preset target pressure value A, the two telescopic mechanisms of the air duct adjustment mechanism are controlled to perform telescopic adjustment until the pressure value P1 is less than or equal to the preset target pressure value A; When the pressure value P1 is less than or equal to the preset target pressure value A, the shape of the air duct is adjusted according to the pressure values ​​of the respective heat exchange units and the preset target pressure value A.

16. The method according to claim 15, characterized in that Adjusting the shape of the air duct according to the pressure values ​​of the respective heat exchange units and the preset target pressure value A comprises: Calculate the difference proportional coefficient B between the pressure value Pi of each heat exchange unit and the preset target pressure value A; wherein B=|Pi-A| / A; When the difference proportional coefficient B is greater than the preset coefficient n, the telescopic mechanism of the air duct adjustment mechanism away from the air duct side is controlled to perform telescopic adjustment until the difference proportional coefficient B is less than or equal to the preset coefficient n; When the difference proportional coefficient B is less than or equal to the preset coefficient n, it is triggered to control the heat exchange core to deform according to the preset target pressure value and the average pressure value of each heat exchange unit.

17. The method according to claim 14, characterized in that Controlling the heat exchange core to deform according to the preset target pressure value and the pressure values ​​of each heat exchange unit includes: Calculating the average pressure value of each heat exchange unit; The heat exchange core is controlled to deform according to the pressure values ​​of the respective heat exchange units and the average pressure value.

18. The method according to claim 17, characterized in that Controlling the heat exchange core to deform according to the pressure values ​​of the respective heat exchange units and the average pressure value includes: Calculating the absolute value of the difference between the pressure value Pi of each heat exchange unit and the average pressure value P; When the absolute value of the difference is less than or equal to a preset value, the heat exchange unit is not adjusted; When the absolute value of the difference is greater than the preset value, the pressure value Pi of each heat exchange unit is compared with the average pressure value P, and the heat exchange core is controlled to deform according to the comparison result.

19. The method according to claim 18, characterized in that Controlling the heat exchange core to deform according to the comparison result includes: When the pressure value Pi of the heat exchange unit is greater than the average pressure value P, the heat exchange unit is controlled to contract until the absolute value of the difference between the pressure value Pi of the heat exchange unit and the average pressure value P is less than or equal to the preset value; When the pressure value Pi of the heat exchange unit is less than the average pressure value P, the heat exchange unit is controlled to relax until the absolute value of the difference between the pressure value Pi of the heat exchange unit and the average pressure value P is less than or equal to the preset value.

20. An air conditioner, characterized in that: A fresh air device comprising any one of claims 1 to 12 or a fresh air device control method applying any one of claims 13 to 19.

21. A storage medium containing computer executable instructions, characterized in that: The computer executable instructions are used to execute the fresh air device control method according to any one of claims 13 to 19 when executed by a computer processor.

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