Fresh air fan reverse humidification system and method

Abstract

The application provides a new fan reverse humidification system and method, which solves the problem of poor humidification effect of the humidification system and the like, and comprises a new fan main body, a heat exchange core arranged in the new fan main body, a new air inlet and a new air outlet which are installed on the new fan main body and communicated with the heat exchange core, an exhaust air inlet and an exhaust air outlet which are installed on the new fan main body and communicated with the heat exchange core, a driving mechanism arranged between the exhaust air outlet and the heat exchange core and between the new air outlet and the heat exchange core respectively, and an electric heating humidification mechanism arranged between the exhaust air inlet and the heat exchange core. The application has the advantages of good humidification effect, stable work and the like.

Description

Technical Field

[0001] This invention belongs to the field of humidifier technology, specifically relating to a reverse humidification system and method for a fresh air unit. Background Technology

[0002] A humidifier is a household appliance that increases the humidity in a room. Humidifiers can humidify a specific room or be connected to a boiler or central air conditioning system to humidify an entire building. Humidifiers are mainly divided into two types according to their use: household humidifiers and industrial humidifiers. Existing ultrasonic humidifiers use high-frequency ultrasonic vibrations to atomize water and humidify the air. In wet film humidifiers, water permeates downwards along the wet film material under the influence of gravity, and the water is absorbed by the material, forming a uniform water film. When dry air passes through the wet film material, water molecules fully absorb heat from the air and vaporize, increasing the humidity and creating humid air. Electrode humidifiers heat the water to boiling by inserting electrode rods into the water tank and connecting the power source, using the movement of ions in the water to produce steam. In actual use, these humidifiers all use a unidirectional air intake method to humidify the room. Their humidification efficiency is significantly limited by the motor and produces a lot of condensation. In addition, there is the problem of bacterial growth during use, and they also have high requirements for water quality.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses an intelligent humidifier and its control system [201911093252.2], which includes a humidifier body, a water storage tank inside the humidifier body, a water quality detection probe inside the water storage tank, the water quality detection probe being electrically connected to a water quality detector, the water quality detector being fixedly connected to the inner wall of the humidifier body by bolts, a battery being fixedly connected to the inside of the humidifier body by bolts, the battery being electrically connected to a PLC controller, a display embedded on the outer surface of the humidifier body, the display being electrically connected to a microcontroller, the microcontroller being electrically connected to a water level detection module, the water level detection module being electrically connected to the PLC controller, and a rectangular chamber being fixedly connected to the upper surface of the humidifier body by bolts.

[0004] The above solution addresses the issues of bacterial growth and water quality requirements to some extent, but it still has many shortcomings, such as poor humidification effect during use. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a reasonably designed and effective reverse humidification system for fresh air systems.

[0006] Another objective of this invention is to provide a method for reverse humidification of a fresh air system that effectively reduces condensate water, addressing the aforementioned problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a fresh air unit reverse humidification system, comprising a fresh air unit body, a heat exchange core disposed inside the fresh air unit body, a fresh air inlet and a fresh air outlet connected to the heat exchange core, an exhaust air inlet and an exhaust air outlet connected to the heat exchange core, and drive mechanisms respectively disposed between the exhaust air outlet and the heat exchange core, and between the fresh air outlet and the heat exchange core; an electric heating humidification mechanism is disposed between the exhaust air inlet and the heat exchange core. The electric heating humidification mechanism is installed at the exhaust air inlet, and completes the heat and moisture exchange at the heat exchange core. Because the temperature at the exhaust air inlet is higher than the temperature at the fresh air outlet, water vapor naturally rises and diffuses from the exhaust air inlet towards the fresh air outlet, thereby achieving temperature and humidity conversion and having a high humidification effect.

[0008] In the aforementioned reverse humidification system for a fresh air unit, the fresh air inlet and exhaust outlet are located on one side of the fresh air unit and are respectively connected to ventilation ducts, while the fresh air outlet and exhaust inlet are located on the other side of the fresh air unit and are respectively connected to ventilation ducts. The fresh air unit is connected to the indoor and outdoor areas by ventilation ducts, and the length of the ventilation ducts can be adjusted as needed to meet the installation requirements of the fresh air unit.

[0009] In the aforementioned reverse humidification system for a fresh air unit, the electric heating humidification mechanism includes an electric heating element and a humidification element connected to the electric heating element. The electric heating element is installed at the fresh air inlet, and the humidification element is equipped with a recovery element connected to the heat exchange core. A filtration mechanism is installed at the fresh air outlet. The electric heating humidification mechanism humidifies and warms the air, the recovery element absorbs excess condensate, and the filtration mechanism filters the air, thereby preventing bacterial growth.

[0010] In the aforementioned reverse humidification system for a fresh air unit, the electric heating component includes an electric heating chamber. Inside the chamber, an electric heating channel is connected to the heat exchange core and the exhaust inlet. Electric heating rods are symmetrically arranged relative to the center of the electric heating channel between the electric heating channel and the chamber. A temperature sensor is installed between the electric heating channel and the chamber. A heat conduction mechanism is installed between the electric heating rods and the electric heating channel. The inner side of the electric heating channel is conical, with its inner diameter gradually increasing towards the heat exchange core. The outlet of the electric heating channel is connected to a recovery component. The electric heating component heats the electric heating channel, preventing water vapor condensation, and works with the heat conduction mechanism to ensure effective heat transfer.

[0011] In the aforementioned reverse humidification system for a fresh air unit, the heat conduction mechanism includes a heat-conducting sleeve fitted outside the electric heating channel. The sleeve has heat-conducting grooves symmetrically arranged relative to its center. The heating rod is fitted into the heat-conducting grooves, and frame openings for inserting the heating rod are provided on both sides of the heat-conducting grooves. A sealing step surface is provided on the side of the frame opening away from the heating rod. A sealing cap, threadedly connected to the sealing step surface, seals the frame opening and the end of the heating rod. A wiring hole is provided on the sealing cap. Inside the sealing cap are a first sealing ring opposite the side of the heating rod and a second sealing ring opposite the end of the heating rod. A sealing gasket is filled between the first sealing ring and the sealing step surface. A sealing adhesive layer covers the outside of the second sealing ring, and a heat insulation layer covers the end of the heating rod. The heat conduction mechanism ensures effective heat transfer, while the heating rod and the heat-conducting sleeve have good installation stability.

[0012] In the aforementioned reverse humidification system for a fresh air system, the humidification component includes a humidification box housing positioned between the heating element housing and the heating channel. Each humidification box housing corresponds to a heating element and is inserted and fixed to the outside of a heat-conducting sleeve. A humidification chamber, enclosing the heating elements and arranged independently, is located between the inner side of the humidification box housing and the heat-conducting sleeve. The humidification chamber is connected to the heating channel via a humidification pipe, the end of which is equipped with an atomizing nozzle. The humidification pipe is connected in parallel with a solenoid valve. The humidification chamber is connected to a liquid pump and a filter mechanism via a circulation pipe. A pressure sensor is installed inside the humidification chamber. An insertion strip is provided at the edge of the humidification box housing to be inserted and fixed into the insertion slots on the heat-conducting sleeve and its frame. A sealing edge is also provided at the edge of the humidification box housing to fit snugly against the heat-conducting sleeve and its frame. The sealing edge is pressed and fixed to the heat-conducting sleeve by threaded fittings, with a sealing interlayer between them. The humidification box housing and the humidification chamber are arranged independently. By spraying water onto the surface of the heating elements, heat is fully conducted into the droplets, resulting in high steam generation efficiency.

[0013] In the aforementioned reverse humidification system for a fresh air unit, the filtration mechanism includes a fresh air filter component and a liquid filter component, with the recovery component connected to the liquid filter component. The filtration mechanism filters both air and liquid distribution, preventing external impurities from affecting the ventilation and humidification quality.

[0014] In the aforementioned reverse humidification system for a fresh air system, the fresh air filtration assembly includes a filter cylinder installed at the fresh air outlet. A fan is rotatably mounted inside the filter cylinder. A cylindrical filter frame is installed inside the filter cylinder and covered with a filter screen. The fan is connected to a scraper extending into the filter frame and fitting against the filter screen. The filter frame is fitted with a removable adsorption cover. An adsorption screen is located at the center of the adsorption cover, and adsorption hooks are evenly distributed on the adsorption screen. The liquid filtration assembly includes a filter box connected to a filter pump. The filter box contains several equidistantly arranged filter chambers. The bottom of each filter chamber is connected to the upper end of an adjacent filter chamber via filter channels. One-way valves are installed within each filter channel, which are arranged between adjacent filter chambers. The upper end of each filter chamber is connected in parallel with an air pump. A reinforcing mechanism is installed on the outside of the filter box. This mechanism includes a reinforcing cover plate that closes the upper opening of the filter box. A reinforcing plate, fitted and tightened with threaded fittings, is located between the edge of the reinforcing cover plate and the upper edge of the filter box. Reinforcing ribs are provided at the junctions of the reinforcing plate, the reinforcing cover plate, and the filter box. A grid-like reinforcing strip is distributed on the outer surface of the filter box, and a reinforcing sleeve is fitted over the outside of the filter box. The fresh air filtration assembly automatically scrapes impurities from the filter screen surface to ensure filtration quality. The liquid filtration assembly has a pressurization system, meeting the requirements for high-efficiency liquid filtration in a smaller volume.

[0015] In the aforementioned reverse humidification system for a fresh air unit, the recovery component includes a V-shaped groove located at the lower end of the heat exchange core. The upper end of the V-shaped groove has a recovery guide plate extending towards the exhaust inlet. A recovery pipe is located at the bottom of the V-shaped groove, and the recovery pipe has a recovery hole opposite to the opening at the upper end of the V-shaped groove. The recovery pipe is connected to an air pump at the upper end of the filter chamber, and a one-way valve is installed between the recovery pipe and the air pump. The drive mechanism includes a first drive fan installed at the exhaust outlet and a second drive fan installed at the fresh air outlet. The recovery component removes residual condensate using negative pressure and introduces it into the filter mechanism for secondary reuse, reducing water waste.

[0016] A method for reverse humidification in a fresh air system includes the following steps:

[0017] S1: The second drive fan starts to introduce outside air into the room, and the first drive fan starts to conduct indoor air to the outside;

[0018] S2: The electric heating humidification mechanism starts to mix indoor air with water vapor and then introduces it into the heat exchange core. The heat exchange core performs moisture and heat exchange between indoor and outdoor air.

[0019] S3: After heat and moisture exchange, the air is filtered by the fresh air filter component at the fresh air outlet and then conducted into the room;

[0020] S4: The water condensed by the fresh air filter and humidifier is guided through the recovery component to the liquid filter for filtration before being reintroduced into the electric heating humidifier. After heat and moisture exchange, most of the heat and moisture are introduced into the room through the fresh air outlet. The recovery component prevents condensation from accumulating in the heat exchange core and affecting heat and moisture exchange.

[0021] Compared with existing technologies, the advantages of this invention are as follows: an electric heating humidification mechanism is provided at the exhaust inlet, which realizes the exchange of moisture and heat with the fresh air outlet through the heat exchange core, resulting in a better humidification effect; the heat conduction mechanism ensures that heat is evenly transferred to the electric heating channel, avoiding water vapor condensation at the exhaust inlet and effectively inhibiting bacterial growth; the recovery component absorbs residual condensate and reintroduces it into the electric heating humidification mechanism, resulting in a high water utilization rate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0024] Figure 3 This is a structural schematic diagram from another perspective of the present invention;

[0025] Figure 4 This is a structural cross-sectional view of the fresh air filtration component of the present invention;

[0026] Figure 5 This is a structural cross-sectional view of the liquid filtration assembly of the present invention;

[0027] Figure 6 This is a cross-sectional view of the electrothermal humidification mechanism of the present invention;

[0028] Figure 7 This is a partial cross-sectional view of the electrothermal humidification mechanism of the present invention;

[0029] In the diagram, the components are: 1. Main body of the fresh air unit; 11. Heat exchange core; 12. Fresh air inlet; 13. Fresh air outlet; 14. Exhaust air inlet; 15. Exhaust air outlet; 16. Ventilation duct; 2. Drive mechanism; 21. First drive fan; 22. Second drive fan; 3. Electric heating assembly; 31. Electric heating box; 32. Electric heating channel; 33. Electric heating rod; 4. Humidification assembly; 41. Humidification box; 411. Sealing edge; 412. Sealing interlayer; 42. Humidification chamber; 43. Humidification pipe; 44. Atomizing nozzle; 45. Solenoid valve; 46. Circulation pipe; 47. Liquid pump; 5. Recovery assembly; 5. V-groove; 51. Recovery guide plate; 52. Recovery pipe; 53. Recovery hole; 54. Fresh air filter assembly; 6. Filter. 61. Cylinder body, 62. Linked fan, 63. Filter frame, 64. Filter screen, 65. Scraper, 66. Adsorption cover, 67. Adsorption screen, 68. Adsorption hook, 7. Heat conduction mechanism, 71. Heat conduction sleeve, 72. Heat conduction groove, 73. Frame opening, 74. Sealing step surface, 75. Sealing cover, 76. Wiring hole, 77. First sealing ring, 78. Second sealing ring, 781. Sealing adhesive layer, 782. Heat insulation layer, 79. Sealing gasket, 80. Liquid filtration assembly, 81. Filter pump, 82. Filter box, 83. Filter chamber, 84. Filter channel, 85. Air pump, 91. Reinforcing mechanism, 92. Reinforcing plate, 93. Reinforcing rib, 94. Reinforcing strip, 95. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1-3 As shown, a fresh air unit reverse humidification system includes a fresh air unit body 1, a heat exchange core 11 inside the fresh air unit body 1, a fresh air inlet 12 and a fresh air outlet 13 connected to the heat exchange core 11, an exhaust air inlet 14 and an exhaust air outlet 15 connected to the heat exchange core 11, a drive mechanism 2 is respectively provided between the exhaust air outlet 15 and the heat exchange core 11 and between the fresh air outlet 13 and the heat exchange core 11, and an electric heating humidification mechanism is provided between the exhaust air inlet 14 and the heat exchange core 11. When the system starts, the drive mechanism 2 works synchronously to realize the exchange of indoor and outdoor air. The electric heating humidification mechanism installed at the exhaust inlet 14 humidifies and heats the intake air. When the humid and hot air is introduced into the heat exchange core 11, it exchanges heat and moisture with the air input from the fresh air inlet 12. The heat and humidity are conducted to the fresh air outlet 13 through the heat exchange core 11. Because the electric heating humidification mechanism heats the exhaust inlet 14, the temperature of the exhaust inlet 14 is higher than that of the fresh air outlet 13. Water vapor rises naturally from the exhaust inlet 14 to the fresh air outlet 13.

[0032] Compared to installing a humidifier at the fresh air outlet 13, this application uses a reverse humidification method to humidify and heat the exhaust air inlet 14. It utilizes the heat exchange core 11 itself for heat exchange to further increase the moisture evaporation rate and reduce water vapor condensation inside the fresh air unit 1. During installation, the fresh air unit 1 is placed as follows... Figure 1 Vertical installation ensures optimal humidification. A comparison of specific humidification effects is shown in the table below:

[0033]

[0034] Specifically, the fresh air inlet 12 and the exhaust outlet 15 are located on one side of the fresh air unit body 1 and are respectively connected to the ventilation duct 16, while the fresh air outlet 13 and the exhaust inlet 14 are located on the other side of the fresh air unit body 1 and are respectively connected to the ventilation duct 16. The fresh air unit body 1 is connected to each inlet and outlet through the ventilation duct 16 and is also connected to the central air conditioning system to humidify and heat the indoor environment.

[0035] Depend on Figure 6 As can be seen, the electric heating humidification mechanism includes an electric heating element 3 and a humidification element 4 connected to the electric heating element 3. The electric heating element 3 is installed at the exhaust inlet 14, and the humidification element 4 is equipped with a recovery element 5 connected to the heat exchange core 11. A filter mechanism is installed at the fresh air outlet 13. In addition to working with the humidification element 4 to achieve water vapor evaporation, the electric heating element 3 can also independently heat the interior of the fresh air unit 1 to meet indoor heating needs. When the humidification element 4 is paused, the electric heating element 3 continues to work to dehumidify and dry the interior of the fresh air unit 1.

[0036] Furthermore, the electric heating assembly 3 includes an electric heating box 31, inside which is an electric heating channel 32 connected to the heat exchange core 11 and the exhaust inlet 14. Electric heating rods 33 are symmetrically arranged between the electric heating channel 32 and the electric heating box 31. A temperature sensor is installed between the electric heating channel 32 and the electric heating box 31. A heat conduction mechanism 7 is installed between the electric heating rods 33 and the electric heating channel 32. The inner side of the electric heating channel 32 is conical, and its inner diameter gradually increases towards the heat exchange core 11. The outlet of the electric heating channel 32 is connected to the recovery assembly 5. The temperature sensor works in conjunction with other temperature sensors to regulate the temperature of the electric heating channel 32. The heat conduction mechanism 7 conducts heat into the interior of the electric heating channel 32, maintaining a relatively uniform circumferential temperature. The conical inner side of the electric heating channel 32 guides moisture into the recovery assembly 5 for secondary utilization.

[0037] Furthermore, the heat conduction mechanism 7 includes a heat-conducting sleeve 71 disposed outside the heating channel 32. The heat-conducting sleeve 71 has heat-conducting grooves 72 symmetrically arranged relative to its center. The heating rod 33 is fitted into the heat-conducting grooves 72. Frame openings 73 for inserting the heating rod 33 are provided on both sides of the heat-conducting grooves 72. A sealing step surface 74 is provided on the side of the frame opening 73 away from the heating rod 33. A sealing cover 75 is threadedly connected to the sealing step surface 74 to seal the frame opening 73 and the end of the heating rod 33. A wiring hole 76 is opened on the sealing cover 75. A first sealing ring 77 opposite to the side of the heating rod 33 and a second sealing ring 78 opposite to the end of the heating rod 33 are provided inside the sealing cover 75. A sealing gasket 79 is filled between the first sealing ring 77 and the sealing step surface 74. A sealing adhesive layer 781 is covered on the outside of the second sealing ring 78. A heat insulation layer 782 is covered at the end of the heating rod 33. The sealing structure of the heat conduction mechanism 7 is as follows: Figure 7 As shown.

[0038] The heating element 33 is slidably installed inside the heating element 33 and its two ends are sealed and fixed to the heat-conducting sleeve 71, achieving independent sealing of the heating element 33 with the humidification component 4. Each heating element 33 can be independently adjusted in temperature, and the number and power of the heating elements 33 can be adjusted as needed to achieve precise temperature regulation.

[0039] besides, Figure 6 The humidification component 4 includes a humidification box 41 disposed between the electric heating box 31 and the electric heating channel 32. The humidification box 41 corresponds one-to-one with the electric heating rod 33 and is inserted and fixed to the outside of the heat-conducting sleeve 71. A humidification chamber 42 is disposed between the inner side of the humidification box 41 and the heat-conducting sleeve 71, which encloses the electric heating rod 33 and is arranged independently. The humidification chamber 42 is connected to the electric heating channel 32 through a humidification pipe 43, and an atomizing nozzle 44 is provided at the end of the humidification pipe 43. The humidification pipe 43 is connected to a solenoid valve 45. The humidification chamber 42 is connected to the liquid pump 47 and the filter mechanism via the circulation pipe 46. A pressure sensor is installed inside the humidification chamber 42. The humidification box body 41 has a plug strip 49 at its side opening, which is fixed to the plug groove 48 on the heat-conducting sleeve 71 and its frame opening 73. The humidification box body 41 also has a sealing edge 411 at its side opening, which fits against the heat-conducting sleeve 71 and its frame opening 73. The sealing edge 411 is pressed and fixed to the heat-conducting sleeve 71 by a threaded part, and a sealing interlayer 412 is provided between them. The heating rod 33 is independently encapsulated in the humidification box body 41. The atomizing nozzle 44 sprays water vapor towards the heating channel 32. The solenoid valve 45 controls the opening and closing of the humidification pipe 43, and the pressure sensor feedback adjustment maintains a constant spray pressure.

[0040] Meanwhile, the filtration mechanism includes a fresh air filter assembly 6 and a liquid filter assembly 8, with the recovery assembly 5 connected to the liquid filter assembly 8. The fresh air filter assembly 6 filters the air duct inside the main body 1 of the fresh air unit, while the liquid filter assembly 8 works in conjunction with the recovery assembly 5 to recover condensate and temporarily store the liquid, using the circulating flow of the liquid to achieve rapid cooling of the electric heating humidification mechanism.

[0041] like Figure 4 as well as Figure 5 As can be seen, the fresh air filtration assembly 6 includes a filter cylinder 61 installed at the fresh air outlet 13. A linked fan 62 is rotatably mounted inside the filter cylinder 61. A cylindrical filter frame 63 is installed inside the filter cylinder 61, and a filter screen 64 is covered on the filter frame 63. The linked fan 62 is connected to a scraper 65 extending into the filter frame 63 and fitting against the filter screen 64. A removable adsorption cover 66 is installed on the filter frame 63. An adsorption screen 67 is located at the center of the adsorption cover 66, and adsorption hooks 68 are evenly distributed on the adsorption screen 67. The liquid filtration assembly 8 includes a filter box 82 connected to the filter pump 81. The filter box 82 contains several equidistantly arranged filter chambers 83, which are filled with porous materials such as activated carbon. The filter element and the bottom of the filter chamber 83 are connected to the upper end of the adjacent filter chamber 83 through the filter channel 84. One-way valves are installed in the filter channel 84. The filter channel 84 is arranged between the adjacent filter chambers 83. The upper end of the filter chamber 83 is connected in parallel with the air pump 85. A reinforcing mechanism 9 is provided on the outside of the filter box 82. The reinforcing mechanism 9 includes a reinforcing cover plate 91 that closes the opening at the upper end of the filter box 82. A reinforcing plate 92 is provided between the edge of the reinforcing cover plate 91 and the upper edge of the filter box 82 and is pressed together by a threaded part. Reinforcing ribs 93 are provided at the junction of the reinforcing plate 92, the reinforcing cover plate 91 and the filter box 82. A grid-like reinforcing strip 94 is distributed on the outer surface of the filter box 82. A reinforcing sleeve 95 is fitted on the outside of the filter box 82. The filter screen 64 on the filter frame 63 filters out impurities such as lint. The fan 62 rotates due to the airflow, which drives the scraper 65 to rotate and scrape off the impurities inside the filter screen 64. The scraped impurities are blown towards the adsorption cover 66 under the action of wind pressure and are adsorbed and fixed by the adsorption hook 68, thereby maintaining the filtration effect of the fresh air filter component 6 for a relatively long time.

[0042] The filter chamber 83 filters the liquid introduced into it stage by stage, reducing scale buildup inside the electric heating humidification mechanism and thus extending the service life of the fresh air unit. Since the filter chamber 83 is pressurized by an external air pump 85, the filter box 82 is equipped with a reinforcing mechanism 9 to improve its pressure resistance and structural strength. A sandwich structure exists between the filter box 82 and the reinforcing sleeve 95, with reinforcing strips 94 and reinforcing ribs 93 installed within the sandwich structure to ensure structural stability and sealing performance.

[0043] from Figures 2-3It can be clearly seen that the recovery assembly 5 includes a V-shaped groove 51 arranged at the lower end of the heat exchange core 11. The upper end of the V-shaped groove 51 has a recovery guide plate 52 extending towards the exhaust inlet 14. A recovery pipe 53 is provided at the bottom of the V-shaped groove 51. The recovery pipe 53 has a recovery hole 54 opposite to the opening at the upper end of the V-shaped groove 51. The recovery pipe 53 is connected to the air pump 85 at the upper end of the filter chamber 83. A one-way valve is provided between the recovery pipe 53 and the air pump 85. The drive mechanism 2 includes a first drive fan 21 installed at the exhaust outlet 15 and a second drive fan 22 installed at the fresh air outlet 13. In the recovery assembly 5, the V-shaped groove 51 is arranged around the junction of the heat exchange core 11 and the exhaust inlet 14. Driven by the recovery pipe 53, the bottom recovery pipe 53 introduces condensate or outside air into the filter chamber 83 for pressurization, preventing condensate from accumulating at the heat exchange core 11.

[0044] A method for reverse humidification in a fresh air system includes the following steps:

[0045] S1: The second drive fan 22 starts to introduce outside air into the room, and the first drive fan 21 starts to conduct indoor air to the outside;

[0046] S2: The electric heating humidification mechanism starts to mix indoor air with water vapor and then introduces it into the heat exchange core 11. The heat exchange core 11 performs humidification and heat exchange between indoor and outdoor air.

[0047] S3: After heat and moisture exchange, the air is filtered by the fresh air filter assembly 6 at the fresh air outlet 13 and then conducted into the room;

[0048] S4: The water condensed by the fresh air filter component 6 and the humidification component 4 is introduced into the liquid filter component 8 through the recycling component 5 for filtration and then reintroduced into the electric heating humidification mechanism.

[0049] When the electric heating humidification mechanism in the main body 1 of the fresh air unit stops working, the first drive fan 21 and the second drive fan 22 work normally to guide the exchange of indoor and outdoor air; when the indoor humidity is too low, the first drive fan 21 stops working, and the first drive fan 21 and the first drive fan 22 start normally to quickly transfer steam through the fresh air outlet 13 to the room for humidification; when the indoor temperature is too low, the electric heating component 3 works normally, the humidification component 4 stops working, and provides auxiliary heating for drying the room.

[0050] In summary, the principle of this embodiment is as follows: the electric heating humidification mechanism is installed at the exhaust inlet 14 of the electric heating humidification mechanism. Steam exchanges moisture and heat with the air introduced by the fresh air inlet 12 through the exhaust inlet 14. Since the temperature of the exhaust inlet 14 is higher than that of the fresh air inlet 12, most of the moisture is directly conducted to the room in the form of water vapor for humidification. Compared with installing a humidifier at the fresh air outlet 13, it has a higher humidification efficiency.

[0051] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0052] Although this article extensively uses the following components: fresh air unit body 1, heat exchange core 11, fresh air inlet 12, fresh air outlet 13, exhaust air inlet 14, exhaust air outlet 15, ventilation duct 16, drive mechanism 2, first drive fan 21, second drive fan 22, electric heating assembly 3, electric heating box 31, electric heating channel 32, electric heating rod 33, humidification assembly 4, humidification box 41, sealing edge 411, sealing interlayer 412, humidification chamber 42, humidification pipe 43, atomizing nozzle 44, solenoid valve 45, circulation pipe 46, liquid pump 47, recovery assembly 5, V-groove 51, recovery guide plate 52, recovery pipe 53, recovery hole 54, fresh air filter assembly 6, filter cylinder 61, etc. The terms used include: fan 62, filter frame 63, filter screen 64, scraper 65, adsorption cover 66, adsorption screen 67, adsorption hook 68, heat conduction mechanism 7, heat-conducting sleeve 71, heat-conducting groove 72, frame opening 73, sealing step surface 74, sealing cover 75, wiring hole 76, first sealing ring 77, second sealing ring 78, sealing adhesive layer 781, heat insulation layer 782, sealing gasket 79, liquid filtration assembly 8, filter pump 81, filter box 82, filter chamber 83, filter channel 84, air pump 85, reinforcing mechanism 9, reinforcing cover plate 91, reinforcing plate 92, reinforcing rib 93, reinforcing strip 94, reinforcing sleeve 95, etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A fresh air unit reverse humidification system, comprising a fresh air unit body (1), wherein a heat exchange core (11) is provided inside the fresh air unit body (1), the fresh air unit body (1) is equipped with a fresh air inlet (12) and a fresh air outlet (13) communicating with the heat exchange core (11), and the fresh air unit body (1) is equipped with an exhaust air inlet (14) and an exhaust air outlet (15) communicating with the heat exchange core (11), characterized in that, A drive mechanism (2) is provided between the exhaust outlet (15) and the heat exchange core (11) and between the fresh air outlet (13) and the heat exchange core (11). An electric heating humidification mechanism is provided between the exhaust inlet (14) and the heat exchange core (11). The fresh air inlet (12) and the exhaust outlet (15) are arranged on one side of the fresh air unit (1) and are respectively connected to the ventilation duct (16). The fresh air outlet (13) and the exhaust inlet (14) are arranged on the other side of the fresh air unit (1) and are respectively connected to the ventilation duct (16). The electric heating humidification mechanism includes an electric heating component (3) and a humidification component (4) connected to the electric heating component (3). The electric heating component (3) is installed at the fresh air inlet (12). The humidification component (4) is equipped with a recovery component (5) connected to the heat exchange core (11). A filter mechanism is provided at the fresh air outlet (13).

2. The fresh air unit reverse humidification system according to claim 1, characterized in that, The electric heating assembly (3) includes an electric heating box (31), and an electric heating channel (32) connected to the heat exchange core (11) and the exhaust inlet (14) is provided inside the electric heating box (31). A heating rod (33) is arranged symmetrically with respect to the center of the electric heating channel (32) between the electric heating channel (32) and the electric heating box (31). A temperature sensor is installed between the electric heating channel (32) and the electric heating box (31). A heat conduction mechanism (7) is provided between the heating rod (33) and the electric heating channel (32). The inner side of the electric heating channel (32) is a conical surface and the inner diameter gradually increases towards the heat exchange core (11). The outlet of the electric heating channel (32) is connected to the recovery assembly (5).

3. The fresh air unit reverse humidification system according to claim 2, characterized in that, The heat conduction mechanism (7) includes a heat-conducting sleeve (71) disposed outside the heating channel (32). The heat-conducting sleeve (71) has heat-conducting grooves (72) arranged symmetrically with respect to its center. The heating rod (33) is fitted into the heat-conducting grooves (72). Frame openings (73) for inserting the heating rod (33) are provided on both sides of the heat-conducting grooves (72). A sealing step surface (74) is provided on the side of the frame opening (73) away from the heating rod (33). The sealing step surface (74) is threadedly connected to a device that connects the frame opening (73) and the heating rod. (33) A sealing cap (75) with the end closed, wherein the sealing cap (75) has a wiring hole (76), and the inner side of the sealing cap (75) is provided with a first sealing ring (77) opposite to the side of the heating rod (33) and a second sealing ring (78) opposite to the end of the heating rod (33), wherein a sealing gasket (79) is filled between the first sealing ring (77) and the sealing step surface (74), wherein the outer side of the second sealing ring (78) is covered with a sealing adhesive layer (781), and the end of the heating rod (33) is covered with a heat insulation layer (782).

4. A fresh air unit reverse humidification system according to claim 3, characterized in that, The humidification assembly (4) includes a humidification box (41) disposed between the electric heating box (31) and the electric heating channel (32). The humidification box (41) corresponds one-to-one with the electric heating rod (33) and is inserted and fixed to the outside of the heat-conducting sleeve (71). A humidification chamber (42) is disposed between the inner side of the humidification box (41) and the heat-conducting sleeve (71) to enclose the electric heating rod (33) and is arranged independently. The humidification chamber (42) is connected to the electric heating channel (32) through the humidification pipe (43) and an atomizing nozzle (44) is provided at the end of the humidification pipe (43). The humidification pipe (43) is connected to the solenoid valve (45). The humidification chamber (42) is connected to the liquid pump (47) and the filter mechanism through the circulation pipe (46). A pressure sensor is installed inside the humidification chamber (42). The humidification box body (41) is provided with a plug strip (49) at the side opening, which is fixed to the plug groove (48) on the heat-conducting sleeve (71) and its frame opening (73). The humidification box body (41) is provided with a sealing edge (411) at the side opening, which fits against the heat-conducting sleeve (71) and its frame opening (73). The sealing edge (411) is pressed and fixed to the heat-conducting sleeve (71) through the threaded part, and a sealing interlayer (412) is provided between them.

5. A fresh air unit reverse humidification system according to claim 1, characterized in that, The filtration mechanism includes a fresh air filtration component (6) and a liquid filtration component (8), and the recovery component (5) is connected to the liquid filtration component (8).

6. A fresh air unit reverse humidification system according to claim 5, characterized in that, The fresh air filtration assembly (6) includes a filter cylinder (61) installed at the fresh air outlet (13). A linked fan (62) is rotatably installed inside the filter cylinder (61). A cylindrical filter frame (63) is installed inside the filter cylinder (61), and a filter screen (64) is covered on the filter frame (63). The linked fan (62) is connected to a scraper (65) that extends into the filter frame (63) and fits against the filter screen (64). A detachable adsorption cover (66) is installed on the filter frame (63). An adsorption screen (67) is provided at the center of the adsorption cover (66), and adsorption hooks (68) are evenly distributed on the adsorption screen (67). The liquid filtration assembly (8) includes a filter box (82) connected to a filter pump (81). A plurality of equidistantly arranged filter chambers (83) are provided inside the filter box (82). 3) The bottom is connected to the upper end of the adjacent filter chamber (83) through the filter channel (84). A one-way valve is installed in the filter channel (84). The filter channel (84) is arranged between the adjacent filter chambers (83). The upper end of the filter chamber (83) is connected in parallel with the air pump (85). A reinforcing mechanism (9) is provided on the outside of the filter box (82). The reinforcing mechanism (9) includes a reinforcing cover plate (91) that closes the upper opening of the filter box (82). A reinforcing plate (92) is provided between the edge of the reinforcing cover plate (91) and the upper edge of the filter box (82) and is pressed together by a threaded part. A reinforcing rib (93) is provided at the junction of the reinforcing plate (92), the reinforcing cover plate (91) and the filter box (82). A grid-like reinforcing strip (94) is distributed on the outer surface of the filter box (82). A reinforcing sleeve (95) is fitted on the outside of the filter box (82).

7. A fresh air unit reverse humidification system according to claim 6, characterized in that, The recovery assembly (5) includes a V-shaped groove (51) arranged at the lower end of the heat exchange core (11). The upper end of the V-shaped groove (51) has a recovery guide plate (52) extending toward the exhaust inlet (14). A recovery pipe (53) is provided at the bottom of the V-shaped groove (51). The recovery pipe (53) has a recovery hole (54) opposite to the opening at the upper end of the V-shaped groove (51). The recovery pipe (53) is connected to the air pump (85) at the upper end of the filter chamber (83). A one-way valve is provided between the recovery pipe (53) and the air pump (85). The drive mechanism (2) includes a first drive fan (21) installed at the exhaust outlet (15) and a second drive fan (22) installed at the fresh air outlet (13).

8. A method for reverse humidification of a fresh air unit in a fresh air unit reverse humidification system according to any one of claims 1-7, characterized in that, This method includes the following steps: S1: The second drive fan (22) starts to introduce outside air into the room, and the first drive fan (21) starts to conduct indoor air to the outside; S2: The electric heating humidification mechanism starts to mix indoor air with water vapor and then introduces it into the heat exchange core (11). The heat exchange core (11) performs moisture exchange and heat exchange between indoor and outdoor air. S3: After heat and moisture exchange, the air is filtered by the fresh air filter assembly (6) at the fresh air outlet (13) and then conducted into the room; S4: The water condensed by the fresh air filter component (6) and the humidification component (4) is filtered by the liquid filter component (8) through the recycling component (5) and then reintroduced into the electric heating humidification mechanism.

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