Inlet air dehumidification device for fresh air ventilator

Abstract

The invention relates to the technical field of fresh air ventilator dehumidification, in particular to an air inlet dehumidification device for a fresh air ventilator, which comprises a fresh air ventilator and an air guide pipe connected to the fresh air ventilator, the air inlet end of the air guide pipe is provided with an air inlet fan, the air guide pipe is fixedly connected with a grid plate in a penetrating manner, and a heat exchanger is arranged between the grid plate and the air guide pipe. The fresh air machine is started firstly, then the air inlet machine is started to suck air into the air guide pipe, the air in the air guide pipe flows to make contact with the heat exchanger, the heat exchanger conducts dehumidification treatment on the air, and every time the heat exchanger is used for a long time, a driving motor is started to enable an opening and closing plate to seal the front side or the rear side of an I-shaped partition plate; and then the corresponding electric screw rods are started to drive the brush plates to move downwards, the brush plates move downwards to remove dust and impurities on the fins of the heat exchanger, the dust and impurities are prevented from being attached to influence dehumidification, and therefore the dehumidification effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air fan dehumidification, and in particular to an air inlet dehumidification device for a fresh air fan. Background Art

[0002] Air dehumidification systems for fresh air fans are an integral part of modern buildings, especially in areas with high humidity and poor air quality. While traditional fresh air fans effectively introduce fresh air from outside, they often overlook humidity levels, leading to excessively high indoor humidity levels. This not only impacts living comfort but can also cause mold growth, furniture deformation, and other issues.

[0003] A Chinese patent with publication number CN115597137B discloses a fresh air fan air intake device with a dehumidification function, the device comprising: a control module; an air intake unit controlled by the control module, wherein a filter is provided inside the air intake unit for filtering external air for supply to the fresh air fan; a dehumidification unit and a moisture-proof unit controlled by the control module; wherein the dehumidification unit and the moisture-proof unit are respectively arranged inside the outer casing on both sides of the air intake unit; the dehumidification unit is used to dehumidify the air introduced into the outer casing and provide dry air for the air intake unit. Although the above patent can dehumidify the inhaled air, in a high-dust environment, the fins of the heat exchanger are prone to accumulate fine dust impurities. The accumulation of dust impurities will form an insulating layer, which hinders the effective transfer of heat, thereby reducing the working efficiency of the heat exchanger, which not only affects the normal operation of the equipment, but also reduces the dehumidification effect.

[0004] The present invention aims to solve the problems existing in the above patents. To this end, an air inlet dehumidification device for a fresh air fan is proposed, which can remove dust and impurities on the fins of a heat exchanger and improve the dehumidification effect. Summary of the Invention

[0005] In order to overcome the problem that in a high-dust environment, the fins of the heat exchanger are prone to accumulate fine dust impurities, and the accumulation of dust impurities will form a heat-insulating layer, which hinders the effective transfer of heat and thus reduces the working efficiency of the heat exchanger. This not only affects the normal operation of the equipment, but also reduces the dehumidification effect. The present invention provides an air intake dehumidification device for a fresh air fan that can remove dust impurities on the fins of the heat exchanger and improve the dehumidification effect.

[0006] The present invention is achieved through the following technical solutions: An air intake dehumidification device for a fresh air fan comprises a fresh air fan and an air duct connected to the fresh air fan, the air intake fan is installed at the air intake end of the air duct, a grid plate is fixedly connected to the air duct, a heat exchanger is installed between the grid plate and the air duct, and the device further comprises an I-shaped partition plate fixedly connected to the inner side of the air duct for dividing the heat exchanger into two parts, the two sides of the I-shaped partition plate are grid-shaped, and opening and closing plates are rotatably connected between the I-shaped partition plate and the air duct at even intervals for closing the inside of the I-shaped partition plate, and each set of adjacent opening and closing plates is driven by a synchronous belt assembly The air duct is connected with a torsion spring, and the axis of the opening and closing plate is connected to the air duct. A collecting frame is symmetrically fixed to the air duct and is located directly below the grid plate. A brush plate that is sleeved on the fins of the heat exchanger is symmetrically slidably connected between the I-shaped partition plate and the air duct. An electric screw is symmetrically installed between the grid plate and the air duct, and the electric screw is threadedly connected to the brush plate. A driving assembly is provided on the air duct and the opening and closing plate, and the driving assembly is used to drive the opening and closing plate to close, and then the electric screw drives the brush plate to move downward, so that the brush plate removes dust and impurities on the fins of the heat exchanger.

[0007] Further explanation, the drive assembly includes a screw rod that is symmetrically connected to the air duct for rotation, the ends of the screw rod are connected by a synchronous belt assembly, a drive motor is installed on the air duct, the output shaft end of the drive motor is fixedly connected to one of the ends of the screw rod, and a spur gear is fixedly mounted on one of the opening and closing plates in each group. A T-shaped rack that meshes with the spur gear is symmetrically slidably connected to the air duct for driving the spur gear to rotate, and the T-shaped rack is threadedly connected to the screw rod.

[0008] Further explanation, it also includes a secondary dehumidification component, which includes an exhaust pipe connected to the air duct, the air inlet end of the exhaust pipe corresponds to the heat exchanger, the air outlet end of the exhaust pipe is at the air outlet end position of the air duct, and the air inlet frame is connected to the air duct, and the air outlet end of the air inlet frame faces the heat exchanger, which is used to discharge undried air into the heat exchanger for dehumidification again. A closing plate that contacts the air inlet end of the air inlet frame is rotatably connected between the two sides of the air duct, which is used to close the air inlet frame. The shaft of the closing plate is fixedly sleeved with a swing rod II, a humidity sensor is installed on the inside of the air duct, and a blocking component is provided on the air duct to block part of the air in the air duct.

[0009] Further explanation, the blocking assembly includes a circular plate fixed to the inner side of the air duct, the circular plate is located on the left side of the closing plate, and a blocking plate is evenly spaced and rotatably connected between the circular plate and the air duct, which is used to block part of the air in the air duct, and the blocking plate is located on the right side of the air outlet end of the exhaust pipe. The shaft of the blocking plate is fixedly sleeved with a swing rod I located outside the air duct, and a transmission assembly is provided between the swing rod I and the swing rod II for driving the swing rod II to swing. A stepper motor is installed on the air duct, and the output shaft end of the stepper motor is fixedly connected to the shaft of one of the blocking plates, and the stepper motor is electrically connected to the humidity sensor through the control module.

[0010] To further illustrate, the transmission assembly includes a vertical rod rotatably connected between the swing rods, the end of the vertical rod is rotatably connected to a connecting rod, and the end of the connecting rod is rotatably connected to the end of the swing rod II to drive the swing rod II to swing.

[0011] Further explanation, the air intake dehumidification device for the fresh air fan also includes a dust reduction component, which includes a return-shaped nozzle fixedly connected to the inner side of the air duct, which is used to spray water to reduce dust in the air. An air intake head is fixedly connected to the inner side of the air duct, and an air intake pipe is connected between the air intake head and the return-shaped nozzle. A drain pipe is connected to the air duct to discharge residual water in the air duct. A liquid supply component is provided between the air duct and the air intake pipe, which is used to discharge water into the air intake pipe to be atomized.

[0012] Further explanation, the liquid supply assembly includes a liquid collecting frame fixedly connected to the air duct, which is used to collect water discharged from the collection frame. The collection frame is located in the liquid collecting frame, and an electric control valve is installed at the liquid outlet end of the liquid collecting frame. A connecting pipe is connected to the electric control valve, and the tail end of the connecting pipe is connected to the air intake pipe. The diameter of the connecting pipe is smaller than the diameter of the air intake pipe. A liquid level sensor is installed on the liquid collecting frame, and the liquid level sensor and the electric control valve are electrically connected through a control module.

[0013] To further explain, the air inlet dehumidification device for the fresh air blower also includes a filter plate that is slidably connected between the collection frame and the liquid collection frame to filter impurities in the water.

[0014] The beneficial effects of the present invention are: 1. Start the fresh air fan first, then start the air intake fan to draw air into the air duct. The air flow in the air duct comes into contact with the heat exchanger, and the heat exchanger dehumidifies the air. Whenever the heat exchanger has been used for a long time, start the drive motor so that the opening and closing plate will close the front or back side of the I-shaped partition plate, and then start the corresponding electric screw to drive the brush plate to move downward. The brush plate moves downward to remove dust and impurities on the heat exchanger fins to prevent dust and impurities from adhering and affecting dehumidification, thereby improving the dehumidification effect.

[0015] 2. Under the action of the return nozzle, whenever the air is discharged into the air duct, the return nozzle can atomize water and spray it out. The atomized water can reduce dust in the air in the air duct. The air after dust reduction is dehumidified by the heat exchanger, which can prevent a large amount of dust in the air from subsequently adhering to the fins of the heat exchanger, thereby ensuring that the fins of the heat exchanger are free of a large amount of dust.

[0016] 3. Under the action of the filter plate, every time the liquefied water falls, the filter plate can filter out the impurities in the water. The water after filtering out the impurities falls into the collection frame, which can prevent a large amount of impurities in the water from causing the blockage of the return nozzle, thereby ensuring the normal use of the return nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the heat exchanger, grid plate and I-shaped partition plate of the present invention.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the brush plate and the electric screw of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the drive assembly of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the collection frame of the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the secondary dehumidification component of the present invention.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the blocking plate and the closing plate of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the stepping motor of the present invention.

[0025] Figure 9 It is a schematic diagram of the three-dimensional structure of the dust reduction component of the present invention.

[0026] Figure 10 It is a schematic diagram of the three-dimensional structure of the liquid level sensor of the present invention.

[0027] Figure 11 It is a schematic diagram of the three-dimensional structure of the electric control valve of the present invention.

[0028] Figure 12 It is a schematic diagram of the three-dimensional structure of the filter plate of the present invention.

[0029] The above drawings include the following reference numerals: 1. fresh air fan, 2. air guide duct, 3. air inlet fan, 4. heat exchanger, 5. grid plate, 6. I-shaped partition plate, 7. brush plate, 8. electric screw, 10. opening and closing plate, 11. torsion spring, 111. collection frame, 12. screw, 121. T-shaped rack, 122. spur gear, 123. drive motor, 13. air inlet frame, 131. exhaust pipe, 132. blocking Plate, 133, vertical rod, 134, connecting rod, 135, swing rod I, 136, return plate, 1361, stepping motor, 137, swing rod II, 138, closing plate, 139, humidity sensor, 14, return nozzle, 141, air inlet pipe, 142, discharge pipe, 143, air inlet head, 144, liquid collecting frame, 145, connecting pipe, 146, liquid level sensor, 147, electric control valve, 15, filter plate. DETAILED DESCRIPTION

[0030] First of all, it should be noted that in the various described embodiments, identical components are provided with identical reference numerals or identical component names, wherein the disclosure contained throughout the entire description can be transferred to the same components having the same reference numerals or identical component names. Positional designations selected in the description, such as top, bottom, lateral, etc., also refer to the directly described and illustrated figures and are transferred to the new position in the event of a change in position.

[0031] Example: A fresh air blower air dehumidification device, please refer to Figures 1-8As shown, it includes a fresh air fan 1 and an air duct 2 connected to the right side of the fresh air fan 1, an air inlet fan 3 is installed at the air inlet end of the air duct 2, a grid plate 5 is fixedly connected to the upper part of the air duct 2, a heat exchanger 4 is installed between the grid plate 5 and the upper part of the air duct 2, and also includes an I-shaped partition plate 6, a brush plate 7, an electric screw 8, an opening and closing plate 10, a torsion spring 11, a collection frame 111 and a drive assembly, an I-shaped partition plate 6 is fixed to the upper inner side of the air duct 2, the I-shaped partition plate 6 divides the heat exchanger 4 into two parts, the left and right sides of the I-shaped partition plate 6 are grid-shaped, and the left and right sides of the I-shaped partition plate 6 are rotatably connected to the top of the air duct 2 with twelve opening and closing plates 10 at even intervals. When the opening and closing plates 10 swing ninety degrees, the opening and closing plates 10 can realize the closure of the I-shaped partition plate 6, and every six opening and closing plates 10 form a group, and the upper parts of each group of adjacent opening and closing plates 10 are connected. The transmission connection is through a synchronous belt assembly, and a torsion spring 11 is connected between the upper shaft of the opening and closing plate 10 and the outer top of the air duct 2. A collection frame 111 is symmetrically fixed to the front and rear outer side of the upper outer side of the air duct 2. The collection frame 111 is located directly below the grid plate 5. The collection frame 111 can collect the fallen water. A brush plate 7 is symmetrically slidably connected to the inner side of the air duct 2 front and back. The brush plate 7 is sleeved on the fins of the heat exchanger 4. An electric screw 8 is symmetrically installed front and back between the grid plate 5 and the air duct 2. The front and rear electric screws 8 are respectively threadedly connected to the middle parts of the front and rear brush plates 7. A driving assembly is provided on the air duct 2 and the opening and closing plate 10. The driving assembly is used to drive the opening and closing plate 10 to close, and then the electric screw 8 drives the brush plate 7 to move downward, so that the brush plate 7 removes dust and impurities on the fins of the heat exchanger 4.

[0032] See also Figure 3 and Figure 4 As shown, the driving assembly includes a screw rod 12, a T-shaped rack 121, a spur gear 122 and a driving motor 123. The outer top of the air duct 2 is symmetrically connected to the screw rod 12 for rotation. The front ends of the screw rods 12 on the left and right sides are connected by a synchronous belt assembly. The driving motor 123 is installed on the right rear side of the outer top of the air duct 2. The output shaft end of the driving motor 123 is fixedly connected to the rear end of the right screw rod 12. A spur gear 122 is fixedly mounted on the upper part of one of the opening and closing plates 10 in each group. The T-shaped rack 121 is symmetrically connected to the outer top of the air duct 2 for sliding movement. The T-shaped rack 121 is engaged with the spur gear 122. When the T-shaped rack 121 moves, the T-shaped rack 121 can drive the spur gear 122 to rotate. The T-shaped racks 121 on the left and right sides are respectively threadedly connected to the screw rods 12 on the left and right sides.

[0033] See also Figure 6-Figure 8As shown, it also includes a secondary dehumidification component installed on the air duct 2, the secondary dehumidification component includes an air intake frame 13, an exhaust pipe 131, a blocking component, a swing rod II 137, a closing plate 138 and a humidity sensor 139. The exhaust pipe 131 is connected between the top of the air duct 2 and the left side of the front side. The air intake end of the exhaust pipe 131 corresponds to the heat exchanger 4, and the air outlet end of the exhaust pipe 131 is at the air outlet end position of the air duct 2. The air intake frame 13 is connected to the left side of the top of the air duct 2. The air outlet end of the air intake frame 13 faces the heat exchanger 4. The air intake frame 13 can discharge the undried air into the heat exchanger 4 for dehumidification again. A closing plate 138 is rotatably connected between the upper left sides of the front and rear sides of the air duct 2. The closing plate 138 contacts the air inlet end of the air inlet frame 13. The closing plate 138 can close the air inlet frame 13. A swing rod II 137 is fixedly mounted on the front side of the shaft of the closing plate 138. A humidity sensor 139 is installed on the left side of the top of the air duct 2. A blocking component is provided on the left side of the air duct 2. When the blocking component is in operation, the blocking component can block part of the air in the air duct 2. The blocking component includes a blocking plate 132, a transmission component, a swing rod I 135, a return plate 136 and a stepping motor 1361. The inside of the air duct 2 A return plate 136 is fixed on the left side, and the return plate 136 is located on the left side of the closing plate 138. Four blocking plates 132 are evenly spaced and rotatably connected between the return plate 136 and the air duct 2. When the blocking plate 132 swings to a tilted state, the blocking plate 132 can block part of the air in the air duct 2. The blocking plate 132 is located on the right side of the air outlet end of the exhaust pipe 131. A swing rod I 135 is fixedly mounted on the front side of the shaft of the blocking plate 132. The swing rod I 135 is located outside the air duct 2. A transmission component is provided between the swing rod I 135 and the swing rod II 137. When the transmission component is in operation, the transmission component can be driven by the wind. The swing rod II 137 swings, and a stepper motor 1361 is installed on the upper left side of the outer rear side of the air duct 2. The output shaft end of the stepper motor 1361 is fixedly connected to the rear side of the shaft of the uppermost blocking plate 132, and the stepper motor 1361 is electrically connected to the humidity sensor 139 through the control module; the transmission assembly includes a vertical rod 133 and a connecting rod 134, and the vertical rod 133 is rotatably connected between the right sides of the four swing rods, and the top of the vertical rod 133 is rotatably connected to the connecting rod 134, and the top of the connecting rod 134 is rotatably connected to the right end of the swing rod II 137. When the connecting rod 134 moves, the connecting rod 134 can drive the swing rod II 137 to swing.

[0034] Initially, the collection frame 111 is filled with an appropriate amount of water, and the liquid level of the water is higher than the liquid outlet end of the collection frame 111. When the fresh air blower 1 is started, the air intake fan 3 and the heat exchanger 4 are started, and the air intake fan 3 draws air into the air duct 2. The air flow in the air duct 2 contacts the heat exchanger 4, and the heat exchanger 4 dehumidifies the air in the air duct 2. The heat exchanger 4 liquefies the moisture in the air, and the liquefied water falls downward through the grid plate 5, and the water also falls into the collection frame 111 for collection. At the same time, because the water in the collection frame 111 is higher than the liquid outlet end of the collection frame 111, the air in the air duct 2 will not be discharged from the collection frame 111, and the air dehumidified by the heat exchanger 4 continues to flow to supply the fresh air blower 1 for use. When the heat exchanger 4 is used for a long time, dust and impurities in the air will adhere to the fins of the heat exchanger 4 to form an insulation layer. The dust and impurities will affect the dehumidification process of the heat exchanger 4 for the air, so it is necessary to clean the dust and impurities on the heat exchanger 4, start the drive motor 123 to rotate forward to drive the right screw rod 12 to rotate forward, the right screw rod 12 rotates forward through the synchronous belt assembly to drive the left screw rod 12 to rotate forward, the left and right screw rods 12 rotate forward to drive the left and right T-shaped racks 121 to move forward, the T-shaped rack 121 moves forward and meshes with the front spur gear 122, the T-shaped rack 121 drives the front spur gear 122 to rotate, the front spur gear 122 rotates to drive one of the front opening and closing plates 10 to swing toward the direction of the heat exchanger 4, and the swinging opening and closing plate 1 The remaining five opening and closing plates 10 at the front are driven to swing toward the heat exchanger 4 through the synchronous belt assembly. The front torsion spring 11 is compressed. When the six opening and closing plates 10 at the front swing ninety degrees, the drive motor 123 is turned off, the screw rod 12 stops driving the T-shaped rack 121 to move forward, and the front opening and closing plate 10 stops swinging. The front opening and closing plate 10 then closes the front side of the I-shaped partition plate 6. Then the front electric screw 8 is started to rotate forward to drive the front brush plate 7 to move downward. The brush plate 7 moves downward to remove dust and impurities on the fins of the front half of the heat exchanger 4. The removed dust and impurities fall downward and contact the grid plate 5. The dust and impurities pass through the grid plate 5 and fall into the collection frame 111. At the same time, the air in the air duct 2 can continue to pass through the rear half of the heat exchanger 4. Dehumidification is performed, so that dust and impurities can be removed while the air continues to be dehumidified for use by the fresh air fan 1 without affecting it. When the front brush plate 7 moves downward to the maximum stroke, the front electric screw 8 is started to reverse and drive the front brush plate 7 to move upward and reset, and then the driving motor 123 is started to reverse and drive the screw rod 12 to reverse, and the screw rod 12 reverses and drives the T-shaped rack 121 to move backward and reset, and the T-shaped rack 121 moves backward and resets and drives the front spur gear 122 to rotate in the opposite direction, and the front spur gear 122 rotates in the opposite direction to drive the six front opening and closing plates 10 to swing away from the heat exchanger 4 and reset, and the front opening and closing plate 10 stops closing the front side of the I-shaped partition plate 6, and the air flow in the air duct 2 can continue to pass through the front half of the heat exchanger 4 for dehumidification.Similarly, when a large amount of dust and impurities adhere to the fins of the rear half of the heat exchanger 4, the drive motor 123 is started to drive the screw rod 12 to reverse, and the screw rod 12 reverses to drive the T-shaped rack 121 to move backward and engage with the rear spur gear 122, which makes the six rear opening and closing plates 10 swing to close the rear side of the I-shaped partition plate 6. The rear electric screw 8 is started to rotate forward to drive the rear brush plate 7 to move downward. The rear brush plate 7 moves downward to remove the dust and impurities on the fins of the rear half of the heat exchanger 4, and the front half of the heat exchanger 4 continues to dehumidify the air. This is repeated to continuously remove the dust and impurities on the fins of the heat exchanger 4 to prevent the dust and impurities from adhering to and affecting the dehumidification, thereby improving the dehumidification effect. When the fresh air fan 1 is turned off, the air inlet fan 3 is turned off, the air stops being drawn into the air duct 2, and then the heat exchanger 4 is turned off; When the dehumidified air continues to flow to the left for use by the fresh air blower 1, the humidity sensor 139 detects the humidity in the air flowing to the left. Whenever the dryness of the air dehumidified by the heat exchanger 4 is unqualified, the humidity sensor 139 detects the humidity in the air. The humidity sensor 139 controls the stepper motor 1361 to rotate forward through the control module. The stepper motor 1361 rotates forward to drive the top blocking plate 132 to swing upward. The top blocking plate 132 swings upward to drive the top swing rod I 135 to swing downward. The top swing rod I 135 drives the vertical rod 133 to move downward. The vertical rod 133 moves downward to drive the remaining three swing rods. Ⅰ135 swings downward, and the remaining three swing rods Ⅰ135 swing downward, driving the remaining three blocking plates 132 to swing downward. At the same time, the vertical rod 133 moves downward and drives the swing rod Ⅱ137 to swing downward through the connecting rod 134. The swing rod Ⅱ137 swings downward and drives the closing plate 138 to swing down by 65 degrees to form an inclined state. The closing plate 138 swings downward and stops to close the air intake frame 13. When the blocking plate 132 swings upward by 90 degrees, the stepper motor 1361 is turned off. At this time, the six opening and closing plates 10 in front close the front side of the I-shaped partition plate 6. The air that is not completely dehumidified flows to the left and contacts the blocking plate 132. The blocking plate 132 will close the part that is not completely dehumidified. The air is blocked, and then the air is discharged into the air intake frame 13 through the closing plate 138. The air in the air intake frame 13 is discharged into the front side of the I-shaped partition plate 6 and contacts the heat exchanger 4. The heat exchanger 4 dehumidifies the air again, thus ensuring the dryness of the air. The air after the secondary dehumidification is discharged back to the air duct 2 through the exhaust pipe 131. The air duct 2 discharges the air after the secondary dehumidification into the fresh air fan 1 for use. As part of the air is discharged into the front side of the I-shaped partition plate 6 through the air intake frame 13 and is dehumidified for the second time, the humidity sensor 139 continues to monitor the air humidity in the air duct 2. When the air humidity drops to the standard value, it means that the air dehumidification is qualified. The humidity sensor 13 The control module controls stepper motor 1361 to reverse, causing it to swing downward and reset. The topmost blocking plate 132 then drives vertical rod 133 upward via swing rod I 135 to reset. Vertical rod 133 drives the remaining three blocking plates 132 downward via swing rod I 135 to reset. Blocking plates 132 reset and stop, partially blocking air in air duct 2. Vertical rod 133 moves upward and reset, driving swing rod II 137 upward and reset via connecting rod 134. Swing rod II 137 swings upward and resets, driving closing plate 138 upward and reset. Closing plate 138 resets and seals air intake frame 13. This prevents incompletely dehumidified air from being used by fresh air fan 1, thereby improving air dehumidification efficiency.

[0035] See also Figures 9-11As shown, the air intake dehumidification device for the fresh air blower also includes a dust reduction component installed on the air duct 2, and the dust reduction component includes a return-shaped nozzle 14, an air intake pipe 141, a drain pipe 142, an air intake head 143 and a liquid supply component. The middle part of the inner side of the air duct 2 is fixedly connected with the return-shaped nozzle 14. When water is discharged into the return-shaped nozzle 14, the return-shaped nozzle 14 can spray water to reduce dust in the air. The right side of the bottom of the air duct 2 is fixedly connected with an air intake head 143, and the middle part of the left side of the air intake head 143 is connected with the air intake pipe 141. The drain pipe 142 is connected to the right side of the bottom of the air duct 2. The drain pipe 142 can discharge the residual water in the air duct 2. A liquid supply component is provided between the outer side of the air duct 2 and the air intake pipe 141. When the liquid supply component is operated During operation, the liquid supply component can discharge water into the air intake pipe 141 to be atomized; the liquid supply component includes a liquid collecting frame 144, a connecting pipe 145, a liquid level sensor 146 and an electric control valve 147. The liquid collecting frame 144 is fixedly connected to the left side of the outer side of the air guide pipe 2, and the collecting frame 111 is located in the liquid collecting frame 144. The liquid collecting frame 144 can collect the water discharged from the collecting frame 111. The liquid outlet end of the liquid collecting frame 144 is installed with an electric control valve 147, and the left side of the electric control valve 147 is connected to the connecting pipe 145. The tail end of the connecting pipe 145 is connected to the upper part of the air intake pipe 141. The diameter of the connecting pipe 145 is smaller than the diameter of the air intake pipe 141. A liquid level sensor 146 is installed on the right side of the liquid collecting frame 144. The liquid level sensor 146 and the electric control valve 147 are electrically connected through a control module.

[0036] When the heat exchanger 4 liquefies the moisture in the air, the liquefied water passes through the grid plate 5 and falls into the collection frame 111. As the water continues to fall, the water in the collection frame 111 will continue to overflow. The overflowed water falls into the liquid collecting frame 144 and contacts the electric control valve 147 and the liquid level sensor 146. The electric control valve 147 blocks the water in the liquid collecting frame 144, and the liquid level sensor 146 detects the liquid level height in the liquid collecting frame 144. At the same time, part of the air in the air duct 2 will be discharged into the air intake head 143, and the air in the air intake head 143 is discharged into the air intake pipe 141. The air in the air intake pipe 141 is discharged into the return nozzle 14, and the return nozzle 14 sprays air into the air duct 2. When the liquid level sensor 146 detects that the liquid level height in the liquid collecting frame 144 exceeds the set maximum value, the liquid level sensor 146 controls the electric control valve 147 to open through the control module, and the electric control valve 147 opens to stop collecting the liquid. The water in the frame 144 is blocked, and the water in the liquid collecting frame 144 is discharged into the connecting pipe 145. The water in the connecting pipe 145 is discharged into the air inlet pipe 141 and contacts with the flowing air. The air and water are mixed and discharged into the return nozzle 14. The return nozzle 14 atomizes the water and sprays it out. The atomized water contacts with the air in the air duct 2. The atomized water performs dust reduction treatment on the air in the air duct 2. The water that appears after dust reduction falls into the air duct 2 and contacts with the drain pipe 142. The drain pipe 142 discharges the water. The air after dust reduction continues to flow and contacts with the heat exchanger 4 to be dehumidified. As the water is continuously discharged, the liquid level height in the liquid collecting frame 144 continues to decrease. When the liquid level height in the liquid collecting frame 144 drops to the set minimum value, the liquid level sensor 146 controls the electric control valve 147 to be closed through the control module, and the water in the liquid collecting frame 144 stops being discharged into the connecting pipe 145. Only air is sprayed out by the return nozzle 14. In this way, a large amount of dust in the air can be prevented from subsequently adhering to the fins of the heat exchanger 4, thereby ensuring that a large amount of dust is adhered to the fins of the heat exchanger 4.

[0037] See also Figure 12 As shown, the air inlet dehumidification device for the fresh air blower also includes a filter plate 15. The filter plates 15 are slidably connected between the upper parts of the front and rear collection frames 111 and the upper parts of the front and rear liquid collection frames 144, respectively. The filter plates 15 can filter impurities in the water.

[0038] As the liquefied water passes through the mesh plate 5 and falls into the collection frame 111, it first contacts the filter plate 15, which filters impurities from the water. The filtered water then passes through the filter plate 15 and falls into the collection frame 111. If a large amount of impurities remain on the filter plate 15, the filter plate 15 is removed from the collection frame 111 to remove the impurities, and then returned to the collection frame 111. This prevents large amounts of impurities in the water from clogging the circular nozzle 14, thereby ensuring its normal operation.

[0039] Finally, it is necessary to point out that the above content is only used to help understand the technical solution of the present invention and cannot be understood as limiting the scope of protection of the present invention; non-essential improvements and adjustments made by technical personnel in this field based on the above content of the present invention are all within the scope of protection required by the present invention.

Claims

1. An air inlet dehumidification device for a fresh air blower, comprising a fresh air blower (1) and an air duct (2) connected to the fresh air blower (1), an air inlet fan (3) being installed at the air inlet end of the air duct (2), a mesh plate (5) being fixedly connected to the air duct (2), and a heat exchanger (4) being installed between the mesh plate (5) and the air duct (2), wherein: The heat exchanger (4) is further provided with an I-shaped partition plate (6) fixed to the inner side of the air duct (2), which is used to separate the heat exchanger (4) into two parts. The two sides of the I-shaped partition plate (6) are grid-shaped. An opening and closing plate (10) is evenly spaced and rotatably connected between the I-shaped partition plate (6) and the air duct (2), which is used to close the inside of the I-shaped partition plate (6). Each group of adjacent opening and closing plates (10) is connected by a synchronous belt assembly. A torsion spring (11) is connected between the shaft of the opening and closing plate (10) and the air duct (2). A collecting frame located directly below the grid plate (5) is symmetrically fixed to the air duct (2). (111), a brush plate (7) sleeved on the fins of the heat exchanger (4) is symmetrically slidably connected between the I-shaped partition plate (6) and the air duct (2), an electric screw (8) is symmetrically installed between the grid plate (5) and the air duct (2), the electric screw (8) and the brush plate (7) are threadedly connected, and a driving component is provided on the air duct (2) and the opening and closing plate (10), and the driving component is used to drive the opening and closing plate (10) to close, and then the electric screw (8) drives the brush plate (7) to move downward, so that the brush plate (7) removes dust and impurities on the fins of the heat exchanger (4).

2. The air inlet dehumidification device for a fresh air blower according to claim 1, characterized in that: The driving assembly includes a screw rod (12) symmetrically connected to the air duct (2), the ends of the screw rod (12) are connected by a synchronous belt assembly, a driving motor (123) is installed on the air duct (2), the output shaft end of the driving motor (123) is fixedly connected to the end of one of the screw rods (12), and a spur gear (122) is fixedly mounted on one of the opening and closing plates (10) in each group. A T-shaped rack (121) meshing with the spur gear (122) is symmetrically slidably connected to the air duct (2) for driving the spur gear (122) to rotate, and the T-shaped rack (121) is threadedly connected to the screw rod (12).

3. The air inlet dehumidification device for a fresh air blower according to claim 2, characterized in that: The invention also includes a secondary dehumidification component, which includes an exhaust pipe (131) connected to the air duct (2), an air inlet end of the exhaust pipe (131) corresponds to the heat exchanger (4), and an air outlet end of the exhaust pipe (131) is located at the air outlet end position of the air duct (2). The air duct (2) is connected to an air inlet frame (13), and the air outlet end of the air inlet frame (13) faces the heat exchanger (4) and is used to discharge undried air into the heat exchanger (4) for dehumidification again. A closing plate (138) is rotatably connected between the two sides of the air duct (2) and contacts the air inlet end of the air inlet frame (13) and is used to close the air inlet frame (13). The shaft of the closing plate (138) is fixedly sleeved with a swing rod II (137). A humidity sensor (139) is installed on the inside of the air duct (2). A blocking component is provided on the air duct (2) to block part of the air in the air duct (2).

4. The air inlet dehumidification device for a fresh air blower according to claim 3, characterized in that: The blocking component includes a return plate (136) fixed to the inner side of the air duct (2), the return plate (136) is located on the left side of the closing plate (138), and a blocking plate (132) is evenly spaced and rotatably connected between the return plate (136) and the air duct (2) for blocking part of the air in the air duct (2). The blocking plate (132) is located on the right side of the air outlet end of the exhaust pipe (131), and the shaft of the blocking plate (132) is fixedly sleeved with a swing rod I (135) located outside the air duct (2). A transmission component is provided between the swing rod I (135) and the swing rod II (137) for driving the swing rod II (137) to swing. A stepping motor (1361) is installed on the air duct (2), and the output shaft end of the stepping motor (1361) is fixedly connected to the shaft of one of the blocking plates (132). The stepping motor (1361) is electrically connected to the humidity sensor (139) through the control module.

5. The air inlet dehumidification device for a fresh air blower according to claim 4, characterized in that: The transmission assembly includes a vertical rod (133) rotatably connected between the swing rods, the end of the vertical rod (133) is rotatably connected to the connecting rod (134), and the end of the connecting rod (134) is rotatably connected to the end of the swing rod II (137) to drive the swing rod II (137) to swing.

6. The air inlet dehumidification device for a fresh air blower according to claim 5, characterized in that: The air inlet dehumidification device for the fresh air blower further comprises a dust reduction component, which comprises a return-shaped nozzle (14) fixedly connected to the inner side of the air guide pipe (2) for spraying water to perform dust reduction treatment on the air, an air inlet head (143) fixedly connected to the inner side of the air guide pipe (2), an air inlet pipe (141) connected between the air inlet head (143) and the return-shaped nozzle (14), a liquid discharge pipe (142) connected to the air guide pipe (2) for discharging residual water in the air guide pipe (2), and a liquid supply component provided between the air guide pipe (2) and the air inlet pipe (141) for discharging water into the air inlet pipe (141) for being atomized.

7. The air inlet dehumidification device for a fresh air blower according to claim 6, characterized in that: The liquid supply assembly includes a liquid collecting frame (144) fixedly connected to the air guide pipe (2) and used for collecting water discharged from the collecting frame (111). The collecting frame (111) is located in the liquid collecting frame (144). An electric control valve (147) is installed at the liquid outlet end of the liquid collecting frame (144). A connecting pipe (145) is connected to the electric control valve (147). The tail end of the connecting pipe (145) is connected to the air intake pipe (141). The diameter of the connecting pipe (145) is smaller than the diameter of the air intake pipe (141). A liquid level sensor (146) is installed on the liquid collecting frame (144). The liquid level sensor (146) and the electric control valve (147) are electrically connected through a control module.

8. The air inlet dehumidification device for a fresh air blower according to claim 7, characterized in that: The air inlet dehumidification device for the fresh air blower further comprises a filter plate (15) slidably connected between the collection frame (111) and the liquid collection frame (144) for filtering impurities in water.

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