A new fresh air handling unit with temperature and humidity control and a control method thereof

Abstract

The application provides a new air handling unit for temperature and humidity control and a control method, and belongs to the technical field of air treatment equipment. The new air handling unit for temperature and humidity control comprises a casing, a wet film unit and a filtering unit. The wet film unit and the filtering unit are both installed inside the casing. When air flows through the casing, it will pass through the filtering unit and the wet film unit in sequence. The filtering unit comprises a filter frame. The filter frame is installed inside the casing and is provided with ventilation grooves for air passing. The first filter cloth is slowly wound while being filtered through the cooperation of the first winding assembly and the second winding assembly. When the winding is completed, the first winding assembly or the second winding assembly can be disassembled, and a new first winding assembly or a new second winding assembly can be replaced. In addition, the dust on the filter cloth can be avoided from falling and causing secondary pollution by winding the first filter cloth, and the risk of dust being brought into the room is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air treatment equipment, and particularly relates to a fresh air handling unit for temperature and humidity control and a control method. BACKGROUND

[0002] The fresh air handling unit is used for taking fresh air from the outdoor, performing dust removal, dehumidification (or humidification), temperature reduction (or temperature increase) and the like on the fresh air, and then sending the fresh air to the indoor through a fan to replace the original air in the indoor space, so that the air in the indoor space is kept fresh at all times, and the harm to health caused by staying in the air-conditioned room for a long time is avoided.

[0003] A fresh air device and a control method thereof are disclosed in Chinese Patent No. CN113701216B, which include a case, the inside of the case is provided with a total heat exchanger, the left and right sides of the total heat exchanger are provided with primary filter winders, the inside of the old air inlet channel and the fresh air outlet channel is provided with a secondary filter winder, the secondary filter winder and the primary filter winder are detachably installed in the case, the secondary filter winder and the primary filter winder include a filter screen mechanism and a lifting adjusting mechanism for driving the filter screen mechanism to move up and down in the case; the secondary filter winder and the primary filter winder are detachably installed in the case, the secondary filter winder and the primary filter winder include the filter screen mechanism and the lifting adjusting mechanism for driving the filter screen mechanism to move up and down in the case, when the filter screen is removed for maintenance or cleaning, the filter screen can be taken out through the maintenance opening, the replacement and cleaning of the filter screen are facilitated, and the use effect and service life of the fresh air equipment are improved.

[0004] The above-mentioned fresh air equipment needs to replace the filter plate after long-time use, the staff first opens the fresh air equipment, and then takes out the filter plate fixed in the air supply pipeline, but in the process of taking out the filter plate, dust on the filter plate may fall and be taken into the clean room by air, resulting in a situation that the dust concentration in the clean room is too high. SUMMARY

[0005] The application aims to provide a fresh air handling unit for temperature and humidity control and a control method, and aims to solve the problem that dust on the filter plate may fall and be taken into the clean room by air when the filter plate is replaced in the prior art.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a fresh air handling unit for temperature and humidity control, comprising: a case, a wet membrane unit and a filter unit, the wet membrane unit and the filter unit are both installed in the inside of the case, when air flows through the case, will pass through the filter unit and the wet membrane unit in turn, the filter unit comprises:

[0007] a filter frame, the filter frame is installed in the inside of the case, and a ventilation slot for air passing through is arranged on the filter frame;

[0008] The first filter cloth is installed in the filter frame and can completely cover the ventilation groove to filter air;

[0009] The first winding assembly comprises a shaft body installed on one side of the filter frame, a rotating drum is rotatably arranged on the shaft body, the rotating drum and the shaft body are connected through a torsional spring, a first sleeve is arranged on the rotating drum, a second filter cloth is arranged on the first sleeve, the length of the second filter cloth can cover the ventilation groove and is connected with one side of the first filter cloth, and when the first sleeve rotates, the second filter cloth and the first filter cloth can be wound and unwound in sequence.

[0010] The second winding assembly comprises a rotating shaft rotatably arranged in the filter frame and located on the side away from the first winding assembly, a second sleeve is arranged on the rotating shaft, the second sleeve is provided with a third filter cloth, the length of the third filter cloth can cover the ventilation groove and is connected with one side of the first filter cloth, and when the second sleeve rotates, the third filter cloth and the first filter cloth can be wound and unwound in sequence.

[0011] Further technical solutions of the present application are that the two sides of the filter frame are provided with sliding plates, the first winding assembly and the first winding assembly are located between the two sliding plates, the opposite sides of the two sliding plates are provided with extension plates, the first elastic members for driving the two sliding plates to approach each other are arranged between the extension plates on the sliding plates, the extension plates are provided with racks, the filter frame is provided with a gear shift gear meshing with the racks, the gear shift gear is meshed with a driving gear on one side, the driving gear is telescopically provided with a driving block on one side, and the driving gear is provided with a second elastic member for pushing the driving block outward.

[0012] Further technical solutions of the present application are that the two ends of the first filter cloth are provided with first connecting heads, the ends close to the first filter cloth of the second filter cloth and the third filter cloth are provided with second connecting heads, the first connecting heads and the second connecting heads are in the shape of hooks, and the first connecting heads and the second connecting heads can be hooked in corresponding hook grooves.

[0013] Further technical solutions of the present application are that the sides close to the connecting members of the second filter cloth and the third filter cloth are each provided with a limiting strip, the limiting strip and the second filter cloth and the third filter cloth are hingedly connected, the limiting strip can only rotate towards the side close to the connecting member, and two limiting plates are hingedly connected on the two sides of the filter frame and can only rotate away from the first winding assembly and the second winding assembly respectively.

[0014] Further technical solutions of the present application are that the two sides of the filter frame are provided with pressing plates, the pressing plates extend towards the inside of the filter frame and push the filter cloth to approach the ventilation groove, the pressing plates are provided with grooves, the grooves are matched with the second connecting heads, and the second connecting heads can be hooked in the grooves.

[0015] Further, a concave hole is formed on the filter frame, the variable gear and the driving gear are arranged in the concave hole, and the variable gear and the driving gear are flush with the surface of the filter frame.

[0016] Further, the part of the driving block extending out of the driving gear is arranged in a tapered shape.

[0017] Further, the bottom of the shell is provided with a driving member, the output end of the driving member is connected with the rotating shaft, and the rotating shaft is driven to rotate.

[0018] A control method of a temperature and humidity controlled fresh air handling unit, characterized in that the method comprises the following steps:

[0019] S1, the filtering unit is installed in the interior of the shell;

[0020] S2, the first winding assembly, the second winding assembly and the first filter cloth are installed in the interior of the filtering unit, ventilation is performed to the interior of the shell, and the filter cloth filters air;

[0021] S3, the first filter cloth and the third filter cloth are wound by the second winding assembly while filtering, and the first filter cloth and the second filter cloth are pulled out from the first winding assembly, at this time, the torsional spring in the first winding assembly stores elastic potential energy;

[0022] S4, when the second winding assembly completely winds the first filter cloth, the second winding assembly is disassembled, a new second winding assembly is replaced, and the second winding assembly is reversed;

[0023] S5, when the second winding assembly is reversed, the first winding assembly winds the first filter cloth and the second filter cloth under the action of the torsional spring;

[0024] S6, when the first winding assembly completely winds the first filter cloth, the first winding assembly is disassembled, and a new first winding assembly is replaced.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] 1. The first winding assembly and the second winding assembly are used in cooperation, the first filter cloth is slowly wound while filtering, the first winding assembly or the second winding assembly can be disassembled and replaced with a new one when completely wound, the dust on the filter cloth is prevented from falling to cause secondary pollution by winding the first filter cloth, and the risk of dust entering the room is avoided.

[0027] 2. The vibration structure is arranged, the filter cloth is vibrated to shake off part of impurities on the filter cloth, the use time of the filter cloth is prolonged, and the frequency of replacing the filter cloth is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and are meant to explain the application without limiting the application to the embodiments. In the drawings:

[0029] Figure 1 is a structural schematic view of a specific embodiment in the application;

[0030] Figure 2 is a structural schematic view of the internal structure of a specific embodiment in the application;

[0031] Figure 3 is a structural schematic view of the filter frame in a specific embodiment in the application;

[0032] Figure 4 is a structural schematic view of the installation of the filter cloth in a specific embodiment in the application;

[0033] Figure 5 is a structural schematic view of the first winding assembly in a specific embodiment in the application;

[0034] Figure 6 is a structural schematic view of the filter cloth in a specific embodiment in the application;

[0035] Figure 7 is a structural schematic view of the vibration structure in a specific embodiment in the application;

[0036] Figure 8 is a structural enlarged view of B in Figure 4

[0037] Figure 9 is a structural enlarged view of A in Figure 6

[0038] In the drawings: 1, the casing; 11, the air inlet; 12, the air outlet; 2, the wet membrane unit; 3, the filter unit; 31, the filter frame; 311, the ventilation groove; 312, the limiting plate; 313, the pressing plate; 314, the groove; 32, the first filter cloth; 33, the first winding assembly; 331, the shaft body; 332, the rotating drum; 333, the torsional spring; 335, the first sleeve; 337, the second filter cloth; 34, the second winding assembly; 341, the rotating shaft; 342, the driving piece; 343, the second sleeve; 344, the third filter cloth; 4, the connecting piece; 41, the first connecting head; 42, the second connecting head; 5, the limiting strip; 6, the vibration structure; 61, the sliding plate; 62, the extension plate; 63, the first elastic piece; 64, the rack; 65, the variable speed gear; 66, the driving gear; 67, the pushing block; 68, the second elastic piece. DETAILED DESCRIPTION

[0039] ​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0040] Referring to Figures 1-9 The present application provides the following technical solutions: comprising a shell 1, a wet film unit 2 and a filter unit 3.

[0041] When the air flow enters the inside of the shell 1, it will first pass through the filter unit 3 to filter the impurities in the air, and then pass through the wet film unit 2 to perform humidification operation on the air, and then be discharged from the outlet of the shell 1, so as to achieve the purpose of humidifying and purifying the air.

[0042] Referring to Figure 2 The shell 1 is an indoor unit and is placed indoors. One side of the shell 1 is provided with an air inlet 11, and the air inlet 11 is connected with an outdoor unit through a pipeline, so that the outdoor unit can supply air to the inside of the shell 1. An air outlet 12 is arranged on the side of the shell 1 away from the air inlet 11, so that the processed air is discharged from the air outlet 12.

[0043] Referring to Figures 3-5 The filter unit 3 comprises a filter frame 31 installed in the inside of the shell 1 and covering the air inlet 11 of the shell 1. A ventilation groove 311 is arranged on the filter frame 31 and is used for air passing. A first filter cloth 32 is arranged on the filter frame 31 and can cover the ventilation groove 311. The upper and lower sides of the first filter cloth 32 are in contact with the upper and lower inner walls of the filter frame 31. First and second winding assemblies 33 and 34 are arranged on the two sides of the filter frame 31 respectively. The two ends of the first filter cloth 32 are detachably installed on the first and second winding assemblies 33 and 34 respectively, and the first filter cloth 32 can be alternately wound.

[0044] Referring to Figures 4-6The first winding assembly 33 comprises a shaft body 331 arranged vertically to the ground, one end of the shaft body 331 is fixed to the inner wall of the filter frame 31, a rotating drum 332 is rotatably connected to the shaft body 331, the rotating drum 332 has a gap with the shaft body 331, a torsional spring 333 is arranged in the gap, one end of the torsional spring 333 is connected to the shaft body 331, the other end is connected to the rotating drum 332, when the rotating drum 332 rotates relative to the shaft body 331, the torsional spring 333 can store and release energy, a limiting protrusion is arranged on the rotating drum 332 and extends along the length direction of the rotating drum 332, a first sleeve 335 is sleeved on the rotating drum 332, a limiting groove is arranged on the first sleeve 335, the limiting protrusion can slide in the limiting groove along the length direction of the limiting groove, so that the first sleeve 335 can rotate simultaneously when the rotating drum 332 rotates, a second filter cloth 337 is wound on the first sleeve 335, the length of the second filter cloth 337 can cover the ventilation groove 311, one end of the second filter cloth 337 is fixedly connected to the first sleeve 335, the other end is connected to the first filter cloth 32 through the connecting piece 4, so that the first sleeve 335 can wind and unwind the second filter cloth 337 and the first filter cloth 32 in turn when rotating.

[0045] Please refer to Figure 3 and Figure 9 The second winding assembly 34 comprises a rotating shaft 341 arranged vertically in the inside of the filter frame 31 and located away from the first winding assembly 33, the bottom of the rotating shaft 341 penetrates to the bottom of the filter frame 31 and is connected with a driving piece 342, the driving piece 342 is a motor fixedly installed at the bottom of the machine shell 1, the output end of the driving piece 342 is connected with the rotating shaft 341, so that the driving piece 342 can drive the rotating shaft 341 to rotate, a second sleeve 343 is sleeved on the rotating shaft 341, a limiting protrusion is also arranged on the rotating shaft 341 and extends along the length direction of the rotating shaft 341, a limiting groove is arranged on the second sleeve 343, so that the limiting protrusion can slide in the limiting groove and drive the second sleeve 343 to rotate through the limiting protrusion and the limiting groove when the rotating shaft 341 rotates, a third filter cloth 344 is wound on the second sleeve 343, the length of the third filter cloth 344 can cover the ventilation groove 311, one end of the third filter cloth 344 is fixedly connected to the second sleeve 343, the other end is connected to the first filter cloth 32 through the connecting piece 4, so that the second sleeve 343 can wind and unwind the third filter cloth 344 and the first filter cloth 32 in turn when rotating.

[0046] In use, since the first filter cloth 32, the second filter cloth 337 and the third filter cloth 344 can all cover the ventilation groove 311 completely, the air passing through the ventilation groove 311 can be filtered, then the rotation of the rotating shaft 341 driven by the driving member 342 can drive the second sleeve 343 mounted on the rotating shaft 341 to rotate, when the second sleeve 343 rotates, the third filter cloth 344 full of impurities adsorbed thereon can be wound, and the first filter cloth 32 full of impurities adsorbed thereon can also be wound on the second sleeve 343 together, at this time, the first filter cloth 32 and the second filter cloth 337 on the first winding assembly 33 will be passively unwound, so as to drive the first sleeve 335 to rotate, when the first sleeve 335 rotates, the torsional spring 333 can store elastic potential energy, when the first filter cloth 32 is completely wound, the first filter cloth 32 after winding and the second sleeve 343 are taken out from the rotating shaft 341 and replaced, then when the driving member 342 reverses, the third filter cloth 344 and the first filter cloth 32 on the second winding assembly 34 can be unwound, the second filter cloth 337 and the first filter cloth 32 full of impurities adsorbed thereon can be wound on the first sleeve 335 by the first winding assembly 33 under the action of the torsional spring 333, when the first filter cloth 32 is completely wound on the first sleeve 335, the first sleeve 335 can be disassembled and replaced, the first filter cloth 32 full of impurities adsorbed thereon is disassembled and replaced by the first winding assembly 33 and the second winding assembly 34 alternately, and when replacing, the second filter cloth 337 or the third filter cloth 344 can be used for standby filtering, so that the equipment can replace the filter cloth without stopping, and since the first filter cloth 32 can be wound by the first winding assembly 33 and the second winding assembly 34, the impurities on the filter cloth can be clamped in the interlayer, avoiding the risk that the impurities fall into the filter frame 31 and are brought into the room when the first winding assembly 33 and the second winding assembly 34 are disassembled and replaced.

[0047] Please refer to Figure 3 and Figure 4 A limiting strip 5 is arranged on one side of the second filter cloth 337 and the third filter cloth 344 close to the connecting piece 4, the limiting strip 5 and the second filter cloth 337 and the third filter cloth 344 are hingedly connected, and the hinge shaft is arranged on the side close to the connecting piece 4, so that the limiting strip 5 can only rotate towards the side close to the connecting piece 4, two limiting plates 312 are hingedly connected on the two sides of the filter frame 31, one side of the limiting plate 312 is in a right angle shape and abuts against the filter frame 31, and the other side is in a circular arc shape to avoid interference with the filter frame 31, so that the two limiting plates 312 can only rotate away from the first winding assembly 33 and the second winding assembly 34 respectively.

[0048] When the first winding assembly 33 winds the filter cloth, and the first filter cloth 32 is completely received in the first winding assembly 33, the limiting strip 5 on the third filter cloth 344 abuts against the limiting plate 312 close to the first winding assembly 33, and since the rotating directions of the limiting strip 5 and the limiting plate 312 are opposite, the limiting strip 5 and the limiting plate 312 abut against each other, thereby limiting the winding of the third filter cloth 344, and avoiding that the third filter cloth 344 is wound on the second winding assembly 34. When the first winding assembly 33 unwinds the filter cloth, the limiting strip 5 and the limiting plate 312 close to the second winding assembly 34 are in contact, and since the rotating directions of the limiting plate 312 and the limiting strip 5 are the same, the limiting strip 5 is flipped to pass the limiting plate 312 and enter the second winding assembly 34 to be wound, and the limiting strip 5 on the first winding assembly 33 and the limiting plate 312 close to the first winding assembly 33 have the same rotating direction, so that the limiting strip 5 can move out of the first winding assembly 33 and approach the second winding assembly 34, thereby limiting the unwinding of the second filter cloth 337 and the third filter cloth 344.

[0049] Please refer to Figure 9 , the connecting piece 4 comprises the first connecting head 41 arranged at two ends of the first filter cloth 32, and the second connecting head 42 arranged at one end of the first filter cloth 32 close to the second filter cloth 337 and the third filter cloth 344. The first connecting head 41 and the second connecting head 42 are in the shape of hooks, and the first connecting head 41 and the second connecting head 42 can be hooked in the corresponding hook grooves, thereby realizing the connection of the first filter cloth 32, the second filter cloth 337 and the third filter cloth 344.

[0050] Please refer to Figure 3 、 Figure 4 and Figure 8 , the filter frame 31 is provided with the pressing plate 313 arranged at two sides of the filter frame 31, the pressing plate 313 extends towards the inside of the filter frame 31 and pushes the filter cloth to approach the direction of the ventilation groove 311, and the pressing plate 313 and the upper and lower side plates of the filter frame 31 are integrally formed to constitute the ventilation port, the filtered gas can be discharged through the ventilation port, and the recess 314 is arranged on the pressing plate 313 and matched with the connecting piece 4, so that when the first connecting head 41 and the second connecting head 42 are separated from each other, the second connecting head 42 can be hooked in the recess 314, thereby avoiding that the torsional spring 333 is released and the second filter cloth 337 is pulled to be wound.

[0051] Please refer to Figure 3 、 Figure 4 and Figure 7The two sides of the filter frame 31 are provided with vibration structures 6, which are used to vibrate the filter cloth during filtering, so as to shake off the impurities on the filter cloth, prolong the service life of the filter cloth, improve the filtering effect, and the vibration structure 6 includes sliding plates 61 located on the two sides of the filter frame 31, the opposite side of the two sliding plates 61 is provided with an extension plate 62, the extension plate 62 is located on the upper and lower sides of the filter frame 31, a first elastic member 63 is arranged between the extension plates 62 on the two sliding plates 61, the first elastic member 63 is a tension spring, and the two ends of the first elastic member 63 are fixed on the corresponding extension plates 62 respectively, so that the two sliding plates 61 are close to each other, the first winding assembly 33 and the first winding assembly 33 are located between the two sliding plates 61 and abut with each other, a rack 64 is arranged on the extension plate 62, a variable speed gear 65 is arranged on the filter frame 31 and engaged with the rack 64, the variable speed gear 65 is engaged with a driving gear 66 on one side, the variable speed gear 65 and the driving gear 66 are located on the upper and lower inner walls of the filter frame 31, and a recess is formed in the filter frame 31, so that the variable speed gear 65 and the driving gear 66 are arranged in the recess and flush with the surface of the filter frame 31, a pushing block 67 is arranged on the side of the driving gear 66 close to the filter cloth, the pushing block 67 can be telescoped in the driving gear 66, and a second elastic member 68 is arranged in the driving gear 66 to push the pushing block 67 outward, of course, in order to avoid the pushing block 67 from being popped out of the driving gear 66, a limiting structure can be arranged on the pushing block 67 to avoid this situation, which is a common means and will not be described in detail, and the pushing block 67 is conical on the outside of the driving gear 66.

[0052] In use, through the alternate winding of the first winding assembly 33 and the second winding assembly 34, the diameters of the first winding assembly 33 and the second winding assembly 34 also change correspondingly, since the sliding plates 61 abut with the first winding assembly 33 and the second winding assembly 34, when the diameters of the first winding assembly 33 and the second winding assembly 34 change, the sliding plates 61 will move, thereby driving the extension plates 62 and the rack 64 to move, the rack 64 can drive the variable speed gear 65 and the driving gear 66 to rotate, the driving gear 66 can drive the pushing block 67 to rotate, when the pushing block 67 rotates, the bottom of the filter cloth can be pushed, since the filter cloth is in a taut state, when the pushing block 67 pushes the filter cloth to deform, the pushing block 67 will be pushed into the inside of the driving gear 66, so that the filter cloth is reset instantaneously, thereby causing the filter cloth to vibrate, and then some impurities on the filter cloth can be shaken off, thereby prolonging the service life of the filter cloth.

[0053] Since the first winding assembly 33 and the second winding assembly 34 will wind the limiting strip 5 when winding, the outer surface of the first winding assembly 33 and the second winding assembly 34 forms a protrusion, so when the first winding assembly 33 and the second winding assembly 34 rotate, the protrusion quickly pushes the sliding plate 61 to move a distance and then resets, and drives the variable gear 65 to rotate through the rack 64, through the setting of the variable gear 65, the rotation speed and rotation angle of the driving gear 66 can be improved, so that the driving gear 66 can quickly vibrate the filter cloth once, so that the first winding assembly 33 and the second winding assembly 34 can provide vibration to the filter cloth once per revolution, without waiting for the diameter of the first winding assembly 33 and the second winding assembly 34 to change to trigger the vibration of the filter cloth, thereby improving the cleaning efficiency of the filter cloth.

[0054] A new fresh air unit control method for temperature and humidity control, comprising the following steps:

[0055] S1, the filter unit 3 is installed in the inside of the casing 1;

[0056] S2, the first winding assembly 33, the second winding assembly 34 and the first filter cloth 32 are installed in the inside of the filter unit 3, and the inside of the casing 1 is ventilated, so that the filter cloth filters the air;

[0057] S3, filter while winding the first filter cloth 32 and the third filter cloth 344 through the second winding assembly 34, while pulling the first filter cloth 32 and the second filter cloth 337 out of the first winding assembly 33, at this time the torsional spring 333 in the first winding assembly 33 stores elastic potential energy;

[0058] S4, when the second winding assembly 34 completely winds the first filter cloth 32, the second winding assembly 34 is disassembled, a new second winding assembly 34 is replaced, and the second winding assembly 34 is reversed;

[0059] S5, when the second winding assembly 34 is reversed, the first winding assembly 33 winds the first filter cloth 32 and the second filter cloth 337 under the action of the torsional spring 333;

[0060] S6, when the first winding assembly 33 completely winds the first filter cloth 32, the first winding assembly 33 is disassembled, and a new first winding assembly 33 is replaced.

Claims

1. A temperature and humidity controlled fresh air handling unit, comprising: The housing (1), the wet film unit (2) and the filter unit (3) are all installed inside the housing (1), when the airflow passes through the housing (1), it will pass through the filter unit (3) and the wet film unit (2) in turn, characterized in that the filter unit (3) comprises: The filter frame (31) is installed inside the housing (1), and the ventilation groove (311) for air passing through is arranged on the filter frame (31); The first filter cloth (32) is installed in the filter frame (31) and can completely cover the ventilation groove (311) and is used for filtering air; The first winding assembly (33) comprises a shaft body (331) installed on one side of the filter frame (31), a rotating drum (332) rotatably arranged on the shaft body (331), and a torsional spring (333) connected between the rotating drum (332) and the shaft body (331), wherein the first sleeve (335) is arranged on the rotating drum (332), the second filter cloth (337) is arranged on the first sleeve (335), the length of the second filter cloth (337) can cover the ventilation groove (311) and is connected with one side of the first filter cloth (32), and the second filter cloth (337) and the first filter cloth (32) can be wound and unwound in turn when the first sleeve (335) rotates; The second winding assembly (34) comprises a rotating shaft (341) rotatably arranged inside the filter frame (31) and located away from the first winding assembly (33), wherein the second sleeve (343) is arranged on the rotating shaft (341), the third filter cloth (344) is arranged on the second sleeve (343), the length of the third filter cloth (344) can cover the ventilation groove (311) and is connected with one side of the first filter cloth (32), and the third filter cloth (344) and the first filter cloth (32) can be wound and unwound in turn when the second sleeve (343) rotates; The first connecting head (41) is arranged at both ends of the first filter cloth (32), the second connecting head (42) is arranged at one end of the second filter cloth (337) and the third filter cloth (344) close to the first filter cloth (32), the first connecting head (41) and the second connecting head (42) are in the shape of a hook, and the first connecting head (41) and the second connecting head (42) can be hooked in the corresponding hook groove; The vibration structure (6) is arranged on both sides of the filter frame (31), and the vibration structure (6) is used for vibrating the filter cloth during filtering to shake off impurities on the filter cloth.

2. The temperature and humidity controlled fresh air handling unit of claim 1, wherein: Two sides of the filter frame (31) are provided with sliding plates (61), the first winding assembly (33) and the first winding assembly (33) are located between the two sliding plates (61), and the opposite sides of the two sliding plates (61) are provided with extension plates (62); the first elastic member (63) for driving the two sliding plates (61) to move close to each other is arranged between the extension plates (62) on the sliding plate (61); the rack (64) is arranged on the extension plate (62); the variable speed gear (65) meshing with the rack (64) is arranged on the filter frame (31); the driving gear (66) is meshed on one side of the variable speed gear (65); the driving block (67) is telescopically arranged on one side of the driving gear (66); and the second elastic member (68) for pushing the driving block (67) outward is arranged in the driving gear (66).

3. The temperature and humidity controlled fresh air handling unit of claim 1, wherein: The second filter cloth (337) and the third filter cloth (344) are provided with limiting strips (5) on the sides close to the connecting piece (4), the limiting strips (5) are hingedly connected with the second filter cloth (337) and the third filter cloth (344), and the limiting strips (5) can only rotate towards the side close to the connecting piece (4); and the filter frame (31) is hingedly connected with two limiting plates (312), and the two limiting plates (312) can only rotate away from the first winding assembly (33) and the second winding assembly (34) respectively.

4. The temperature and humidity controlled fresh air handling unit of claim 1, wherein: The filter frame (31) is provided with a pressing plate (313) on both sides, the pressing plate (313) extends towards the inside of the filter frame (31) and pushes the filter cloth to move towards the ventilation groove (311), the pressing plate (313) is provided with a groove (314), the groove (314) is matched with the second connecting head (42), so that the second connecting head (42) can be hooked in the inside of the groove (314).

5. The temperature and humidity controlled fresh air handling unit of claim 2, wherein: The filter frame (31) is provided with a recess, the variable speed gear (65) and the driving gear (66) are arranged in the recess, and the variable speed gear (65) and the driving gear (66) are flush with the surface of the filter frame (31).

6. The temperature and humidity controlled fresh air handling unit of claim 2, wherein: The part of the driving block (67) extending out of the driving gear (66) is conical.

7. The temperature and humidity controlled fresh air unit of claim 1, wherein: The bottom of the shell (1) is provided with a driving member (342), and the output end of the driving member (342) is connected with the rotating shaft (341) to drive the rotating shaft (341) to rotate.

8. A control method of a temperature and humidity controlled fresh air handling unit, characterized by: The new air handling unit for temperature and humidity control comprises the following steps: S1, the filter unit (3) is installed in the inside of the shell (1); S2, the first winding assembly (33), the second winding assembly (34) and the first filter cloth (32) are installed in the inside of the filter unit (3), and the inside of the shell (1) is ventilated, so that the filter cloth filters the air; S3, while filtering, the first filter cloth (32) and the third filter cloth (344) are wound by the second winding assembly (34), and the first filter cloth (32) and the second filter cloth (337) are pulled out from the first winding assembly (33), at this time, the torsional spring (333) in the first winding assembly (33) stores elastic potential energy; S4, when the second winding assembly (34) completely winds the first filter cloth (32), the second winding assembly (34) is disassembled, a new second winding assembly (34) is replaced, and the second winding assembly (34) is reversed; S5, when the second winding assembly (34) is reversed, the first winding assembly (33) winds the first filter cloth (32) and the second filter cloth (337) under the action of the torsional spring (333); S6, when the first winding assembly (33) completely winds the first filter cloth (32), the first winding assembly (33) is disassembled, and a new first winding assembly (33) is replaced.

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