A new fan
By introducing a drainage chamber and a flip-up plate structure into the fresh air unit, the problem of equipment damage caused by rainwater intrusion is solved, achieving an effective waterproof design, extending equipment life and improving air quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG DEPULAITAI ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-10
AI Technical Summary
Existing fresh air systems are prone to failure of air filter modules and heat exchange cores due to rainwater intrusion in extreme weather conditions, affecting equipment performance and hygiene, and may also pollute indoor air.
A novel air ventilator was designed, comprising a housing, a drainage chamber, and a drain outlet. Rainwater enters through the outdoor air inlet and flows into the drainage chamber. Combined with a baffle and a flip-up plate structure, rainwater is automatically discharged. The air is filtered by moisture-absorbing cotton, reducing damage to internal components.
It effectively prevents rainwater from entering the equipment, extends the service life of the fresh air unit, reduces damage to the heat exchange core and filter module, and improves the equipment's waterproof performance and air quality.
Smart Images
Figure CN120890145B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fresh air systems, and more particularly to a fresh air system. Background Technology
[0002] A fresh air system is a key device used to improve indoor air quality. Its core function is to actively introduce filtered outdoor air into the room while forcibly expelling stale indoor air, thus achieving continuous and controllable ventilation, even when doors and windows are closed. A typical fresh air system mainly includes the following core structural components: outdoor air inlet, air filter module, fan, heat exchange core, indoor air supply vent, indoor air inlet, and outdoor exhaust vent.
[0003] Existing air ventilators, especially those with outdoor air inlets, face a significant technical challenge in actual operation: the risk of rainwater intrusion. Since the air inlets are directly exposed to the outdoor environment, during heavy rainfall, downpours, or storms with strong winds at specific wind directions, rainwater can easily seep into or even flood the equipment, aided by wind or its own weight. Although some designs incorporate simple rain-proof louvers at the air inlets, their waterproofing effect is often insufficient under extreme weather conditions or the impact of wind and rain at specific angles. Rainwater can still be driven by strong wind pressure or flow into the equipment along the structural surface.
[0004] This rainwater intrusion can cause a series of serious problems: the wet air filter module and heat exchange core are not only prone to failure, but may also breed mold and produce odors, which in turn pollute the air supplied to the room, affecting the performance, hygiene and service life of the equipment. Summary of the Invention
[0005] In order to extend the service life of the equipment, this application provides a fresh air fan.
[0006] The fresh air unit provided in this application adopts the following technical solution:
[0007] A new type of air ventilator includes a housing. One end of the housing is provided with an outdoor air inlet and an outdoor air outlet, and the other end of the housing is provided with an indoor air inlet and an indoor air outlet. The outdoor air inlet is connected to the indoor air outlet, and the indoor air inlet is connected to the outdoor air outlet. The housing is provided with a drainage chamber located below the outdoor air inlet, and the housing is provided with a drainage outlet connected to the outdoor air inlet and the drainage chamber.
[0008] By adopting the above technical solution, rainwater can easily enter the casing from the outdoor air inlet, and then be discharged into the drainage chamber after flowing through the drain outlet. This minimizes the impact on the internal components of the casing and extends the service life of the fresh air unit.
[0009] Preferably, the housing further includes a first baffle, a second baffle, a heat exchange core, a first partition plate, and a second partition plate. The housing has a receiving cavity. The first and second baffles are both fixedly connected to the inner wall of the receiving cavity. The first and second baffles are parallel to each other and divide the receiving cavity into a first mounting cavity, a second mounting cavity, and a third mounting cavity. The second mounting cavity is located between the first and second baffles. The heat exchange core is detachably connected to the inner wall of the second mounting cavity. The first partition plate is fixedly connected to the inner wall of the first mounting cavity. The first partition plate divides the receiving cavity into a first mounting cavity, a second mounting cavity, and a third mounting cavity. The second mounting cavity is located between the first and second baffles. The heat exchange core is detachably connected to the inner wall of the second mounting cavity. The first partition plate divides the receiving cavity into a first mounting cavity, a second mounting cavity, and a third mounting cavity. The second mounting cavity is located between the first and second baffles. The heat exchange core is detachably connected to the inner wall of the second mounting cavity. The first partition plate divides the receiving cavity into a first mounting cavity, a second mounting cavity, and a third mounting cavity. The first partition plate divides the receiving cavity into ... The first mounting cavity is divided into an outdoor air inlet cavity and an outdoor air outlet cavity. The second partition plate is fixedly connected to the inner wall of the third mounting cavity. The second partition plate divides the third mounting cavity into an indoor air inlet cavity and an indoor air outlet cavity. The outdoor air inlet is connected to the outdoor air inlet cavity, the outdoor air outlet is connected to the outdoor air outlet cavity, the indoor air inlet is connected to the indoor air inlet cavity, the indoor air outlet is connected to the indoor air outlet cavity, the outdoor air inlet cavity is connected to the indoor air outlet cavity through a heat exchange core, the outdoor air outlet cavity is connected to the outdoor air inlet cavity through a heat exchange core, and the drain outlet is connected to the outdoor air inlet cavity.
[0010] By adopting the above technical solution, outside air enters the room through the outdoor air inlet, outdoor air inlet cavity, heat exchange core, indoor air outlet cavity and indoor air outlet in sequence, and indoor air is discharged to the outside through the indoor air inlet, indoor air inlet cavity, heat exchange core, outdoor air outlet cavity and outdoor air outlet in sequence. The structure is compact, facilitates air heat exchange and reduces energy consumption.
[0011] Preferably, the heat exchange core is slidably connected to the inner wall of the second mounting cavity, and the sliding direction of the heat exchange core is parallel to the length direction of the first baffle. The heat exchange core divides the second mounting cavity into a first connecting cavity, a second connecting cavity, a third connecting cavity, and a fourth connecting cavity. The first baffle is provided with a first connecting port and a second connecting port. The first connecting port connects to the outdoor air inlet cavity and the first connecting cavity, and the second connecting port connects to the outdoor air outlet cavity and the second connecting cavity. The second baffle is provided with a third connecting port and a fourth connecting port. The third connecting port connects to the indoor air outlet cavity and the third connecting cavity, and the fourth connecting port connects to the indoor air inlet cavity and the fourth connecting cavity. The first connecting cavity is connected to the fourth connecting cavity through the heat exchange core, and the second connecting cavity is connected to the third connecting cavity through the heat exchange core.
[0012] By adopting the above technical solution, the first connecting cavity and the fourth connecting cavity are connected, and the second connecting cavity and the third connecting cavity are connected. The existence of the connecting cavity facilitates the full utilization of the heat exchange core, improves heat exchange efficiency, and reduces energy loss.
[0013] Preferably, the height of the outdoor air inlet is less than the height of the outdoor air outlet, and the height of the indoor air inlet is less than the height of the indoor air outlet.
[0014] By adopting the above technical solution, heat exchange between the outside air and the indoor air is facilitated. At the same time, the outdoor air inlet is easy to get water in, has a low height, is easy to clean and drain, and extends the service life of the fresh air unit.
[0015] Preferably, the system further includes a first filter plate and a second filter plate, wherein the first filter plate is slidably connected to the inner wall of the first communicating cavity, and the second filter plate is slidably connected to the inner wall of the fourth communicating cavity.
[0016] By adopting the above technical solution, the first filter plate and the second filter plate filter the incoming air, reducing the entry of large particulate impurities into the heat exchange core, extending the service life of the heat exchange core, and extending the service life of the fresh air unit.
[0017] Preferably, it further includes a fixed cylinder and a first flip plate. The fixed cylinder is fixedly connected to the inner wall of the outdoor air inlet cavity. The fixed cylinder is coaxially arranged with the drain outlet. The two ends of the first flip plate are fixedly connected to a first hinge shaft. The first hinge shaft is rotatably connected to the fixed cylinder around its own axis. The rotation axis of the first hinge shaft is horizontal. The first flip plate is used to cover the drain outlet.
[0018] By adopting the above technical solution, when rainwater enters the indoor air intake cavity, the first flip plate flips, opening the drain outlet to facilitate the discharge of rainwater, reducing the probability of rainwater accumulating in the indoor air intake cavity and causing contamination of the heat exchange core, and extending the service life of the fresh air unit.
[0019] Preferably, it further includes a water receiving tube and a first pull rope. The housing is provided with an opening, which is located on the outer periphery of the fixed tube. The water receiving tube is slidably connected to the inner wall of the opening. The height of the water receiving tube is less than the height of the first hinge shaft. One end of the first pull rope is fixedly connected to the water receiving tube, and the other end of the first pull rope is fixedly connected to the outer wall of the first hinge shaft.
[0020] By adopting the above technical solution, the height of the water receiving tube is less than the height of the fixed tube. The water receiving tube receives water first and then slides downward. The first pull rope drives the first hinge shaft to rotate, causing the first flip plate to open, so that the water level is not greater than the height of the fixed tube, which facilitates drainage and extends the service life of the fresh air unit.
[0021] Preferably, the outer wall of the water receiving cylinder is provided with an overflow outlet, which is used to connect to the drainage chamber.
[0022] By adopting the above technical solution, after the water receiving tube slides down a certain distance, the overflow outlet connects with the drainage chamber, which facilitates full drainage, reduces water accumulation in the outdoor air intake chamber, and extends the service life of the fresh air unit.
[0023] Preferably, it further includes absorbent cotton and a frame, wherein the absorbent cotton is fixedly connected to the inner wall of the frame, and a rotating column is fixedly connected to one end of the frame. The rotating column is rotatably connected to the inner wall of the first communicating cavity around its own axis, and the absorbent cotton is used to cover the first filter plate.
[0024] By adopting the above technical solution, the frame rotates to cover the first filter plate, so that the incoming air passes through the moisture-absorbing cotton filter first, reducing the damage of humid air to the first filter plate and heat exchange core, and extending the service life of the fresh air unit.
[0025] Preferably, it further includes a second pull rope and a guide ring. One end of the second pull rope is fixedly connected to the outer wall of the first hinge shaft, and the other end of the second pull rope is fixedly connected to the outer wall of the rotating column. The guide ring is fixedly connected to the bottom wall of the outdoor air inlet cavity, and the second pull rope passes through the guide ring.
[0026] By adopting the above technical solution, the first hinge shaft rotates while the second pull rope drives the rotating column to rotate, so that the moisture-absorbing cotton covers the first filter plate. When water enters the outdoor air inlet cavity, the frame rotates automatically to protect the first filter plate and the heat exchange core.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. Outside rainwater can easily enter the casing through the outdoor air inlet. After flowing through the drain outlet, the rainwater is discharged into the drainage chamber, which is less likely to affect the internal components of the casing and extends the service life of the fresh air unit.
[0029] 2. The height of the water receiving tube is less than the height of the fixed tube. The water receiving tube receives water first and then slides downward. The first pull rope drives the first hinge shaft to rotate, which opens the first flip plate, so that the water level is not greater than the height of the fixed tube, which facilitates drainage and extends the service life of the fresh air unit.
[0030] 3. The frame rotates to cover the first filter plate, so that the incoming air passes through the moisture-absorbing cotton filter first, reducing the damage of humid air to the first filter plate and heat exchange core, and extending the service life of the fresh air unit. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the overall structure of a fresh air system.
[0032] Figure 2 This is a cross-sectional view of a fresh air system.
[0033] Figure 3 This is a schematic diagram of the internal structure of a fresh air system after it has been cut open.
[0034] Figure 4This is a schematic diagram of the internal structure of a fresh air unit after it has been cut open, mainly used to show the first baffle, the first connecting port, the second baffle, and the third connecting port.
[0035] Figure 5 yes Figure 2 Enlarged view of point A in the middle.
[0036] Figure 6 yes Figure 2 Enlarged view of point B in the middle.
[0037] Explanation of reference numerals in the attached drawings: 1. Body; 11. Housing; 111. Receiving cavity; 112. First mounting cavity; 1121. Outdoor air inlet cavity; 1122. Outdoor air outlet cavity; 113. Second mounting cavity; 1131. First connecting cavity; 1132. Second connecting cavity; 1133. Third connecting cavity; 1134. Fourth connecting cavity; 114. Third mounting cavity; 1141. Indoor air inlet cavity; 1142. Indoor air outlet cavity; 115. Mounting port; 1161. Outdoor air inlet; 1162. Outdoor air outlet; 1163. Indoor air inlet; 1164. Indoor air outlet; 1165. Electrically controlled butterfly valve; 1171. Drainage cavity; 1172. Drain outlet; 1173. Drain outlet; 1174. Through-hole; 119. 12. Connection port; 12. First baffle; 121. First connecting port; 122. Second connecting port; 13. Second baffle; 131. Third connecting port; 132. Fourth connecting port; 14. Cover plate; 15. Heat exchange core; 16. First partition plate; 17. Second partition plate; 18. First filter plate; 19. Second filter plate; 110. Fan; 2. Cleaning component; 21. Valve; 22. Fixing cylinder; 23. First flip plate; 231. First hinge shaft; 24. Water receiving cylinder; 241. Baffle ring; 242. Overflow port; 25. First pull rope; 26. Moisture-absorbing cotton; 27. Frame; 271. Rotating column; 28. Second pull rope; 29. Wire ring; 3. Warning component; 31. Connecting column; 32. Impeller; 33. Streamer. Detailed Implementation
[0038] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0039] This application discloses a fresh air system. (Refer to...) Figure 1 and Figure 2 A new type of air purifier includes a main body 1, a cleaning component 2, and a warning component 3.
[0040] Reference Figure 2 and Figure 3 The main body 1 includes a shell 11, a first baffle 12, a second baffle 13, a cover plate 14, a heat exchange core 15, a first partition plate 16, a second partition plate 17, a first filter plate 18, a second filter plate 19, and a fan 110.
[0041] The housing 11 has a receiving cavity 111. The housing 11 is rectangular in shape. The first baffle 12 and the second baffle 13 are both fixedly connected to the inner wall of the receiving cavity 111. The first baffle 12 and the second baffle 13 are parallel to each other and are parallel to the height direction of the housing 11. The first baffle 12 and the second baffle 13 divide the receiving cavity 111 into a first mounting cavity 112, a second mounting cavity 113 and a third mounting cavity 114. The second mounting cavity 113 is located between the first baffle 12 and the second baffle 13.
[0042] Reference Figure 2 and Figure 3 The upper end of the housing 11 is provided with an installation port 115, which is connected to the second installation cavity 113. The cover plate 14 is detachably connected to the outer wall of the housing 11 by screws. The cover plate 14 is used to cover the installation port 115. The heat exchange core 15 has a hexagonal cross section. The heat exchange core 15 is slidably connected to the inner wall of the second installation cavity 113 from the installation port 115. The sliding direction of the heat exchange core 15 is parallel to the length direction of the first baffle 12. The heat exchange core 15 divides the second installation cavity 113 into a first connecting cavity 1131, a second connecting cavity 1132, a third connecting cavity 1133, and a fourth connecting cavity 1134. The first connecting cavity 1131 and the second connecting cavity 1132 are close to the first baffle 12, and the third connecting cavity 1133 and the fourth connecting cavity 1134 are close to the second baffle 13.
[0043] Reference Figure 2 The first partition plate 16 is fixedly connected to the inner wall of the first mounting cavity 112. The first partition plate 16 is horizontally arranged and divides the first mounting cavity 112 into an outdoor air inlet cavity 1121 and an outdoor air outlet cavity 1122. The second partition plate 17 is fixedly connected to the inner wall of the third mounting cavity 114. The second partition plate 17 is horizontally arranged and divides the third mounting cavity 114 into an indoor air inlet cavity 1141 and an indoor air outlet cavity 1142.
[0044] One end of the housing 11 is provided with an outdoor air inlet 1161 and an outdoor air outlet 1162, and the other end of the housing 11 is provided with an indoor air inlet 1163 and an indoor air outlet 1164. The outdoor air inlet 1161 is connected to the outdoor air inlet cavity 1121, the outdoor air outlet 1162 is connected to the outdoor air outlet cavity 1122, the indoor air inlet 1163 is connected to the indoor air inlet cavity 1141, and the indoor air outlet 1164 is connected to the indoor air outlet cavity 1142. The height of the outdoor air inlet 1161 is less than the height of the outdoor air outlet 1162, and the height of the indoor air inlet 1163 is less than the height of the indoor air outlet 1164. Electrically controlled butterfly valves 1165 are fixedly connected to the inner walls of both the outdoor air outlet 1162 and the outdoor air inlet 1161.
[0045] Reference Figure 3 and Figure 4 The first baffle 12 is provided with a first connecting port 121 and a second connecting port 122. The first connecting port 121 is connected to the outdoor air inlet cavity 1121 and the first connecting cavity 1131. The second connecting port 122 is connected to the outdoor air outlet cavity 1122 and the second connecting cavity 1132. The second baffle 13 is provided with a third connecting port 131 and a fourth connecting port 132. The third connecting port 131 is connected to the indoor air outlet cavity 1142 and the third connecting cavity 1133. The fourth connecting port 132 is connected to the indoor air inlet cavity 1141 and the fourth connecting cavity 1134. The first connecting cavity 1131 is connected to the fourth connecting cavity 1134 through a heat exchange core 15. The second connecting cavity 1132 is connected to the third connecting cavity 1133 through a heat exchange core 15.
[0046] Reference Figure 3 The first filter plate 18 is slidably connected to the inner wall of the first connecting cavity 1131 and is attached to the outer wall of the heat exchange core 15. The second filter plate 19 is slidably connected to the inner wall of the fourth connecting cavity 1134 and is attached to the outer wall of the heat exchange core 15. Two fans 110 are provided, and the two fans 110 are respectively fixedly connected to the inner wall of the indoor air outlet cavity 1142 and the inner wall of the outdoor air outlet cavity 1122.
[0047] Reference Figure 2 and Figure 5 The cleaning component 2 includes a valve 21, a fixed cylinder 22, a first flip plate 23, a water receiving cylinder 24, and a first pull rope 25.
[0048] Reference Figure 2 The housing 11 is provided with a drain chamber 1171, which is located below the outdoor air inlet chamber 1121. The housing 11 is provided with a drain outlet 1172, the axis of which is vertical. The drain outlet 1172 connects the outdoor air inlet chamber 1121 and the drain chamber 1171. The lower end of the housing 11 is provided with a drain outlet 1173, which is connected to the drain chamber 1171. A valve 21 is connected to the inner wall of the drain outlet 1173 and is used to control the opening and closing of the drain outlet 1173.
[0049] Reference Figure 2 and Figure 5 The fixed cylinder 22 is fixedly connected to the bottom wall of the outdoor air inlet cavity 1121. The fixed cylinder 22 is coaxially arranged with the drain outlet 1172. The two ends of the first flip plate 23 are fixedly connected to the first hinge shaft 231. The first hinge shaft 231 is rotatably connected to the fixed cylinder 22 around its own axis. The rotation axis of the first hinge shaft 231 is horizontal. The first flip plate 23 is used to cover the drain outlet 1172.
[0050] The housing 11 has a through-hole 1174, which is located on the outer periphery of the fixed cylinder 22. The axis of the through-hole 1174 is parallel to the axis of the drain outlet 1172. The through-hole 1174 connects the outdoor air inlet chamber 1121 and the drain chamber 1171. The water receiving cylinder 24 is slidably connected to the inner wall of the through-hole 1174. A retaining ring 241 is fixedly connected to the outer wall of the water receiving cylinder 24. The retaining ring 241 is close to the top of the water receiving cylinder 24. The diameter of the retaining ring 241 is larger than the diameter of the through-hole 1174. The height of the water receiving cylinder 24 is smaller than the height of the first hinge shaft 231. One end of the first pull rope 25 is fixedly connected to the water receiving cylinder 24, and the other end of the first pull rope 25 is fixedly connected to the outer wall of the first hinge shaft 231. After the water receiving cylinder 24 receives water, its gravity increases. When the water receiving cylinder 24 slides downward, it drives the first flip plate 23 to rotate through the first pull rope 25. The outer wall of the water receiving tube 24 is provided with an overflow port 242. The height of the overflow port 242 is less than the height of the baffle ring 241. When the baffle ring 241 abuts against the bottom wall of the outdoor air inlet chamber 1121, the overflow port 242 connects to the drain chamber 1171.
[0051] Reference Figure 3 and Figure 6 Cleaning component 2 also includes absorbent cotton 26, frame 27, second pull rope 28, and guide ring 29.
[0052] The absorbent cotton 26 is fixedly connected to the inner wall of the frame 27. One end of the frame 27 is fixedly connected to a rotating column 271. The rotating column 271 is rotatably connected to the inner wall of the first communicating cavity 1131 around its own axis. The rotation axis of the rotating column 271 is vertical. The distance from the rotating column 271 to the fixed cylinder 22 is less than the distance from the free end of the frame 27 to the fixed cylinder 22. The absorbent cotton 26 is used to cover the first filter plate 18. One end of the second pull rope 28 is fixedly connected to the outer wall of the first hinge shaft 231. The other end of the second pull rope 28 is fixedly connected to the outer wall of the rotating column 271. The wire ring 29 is fixedly connected to the bottom wall of the outdoor air inlet cavity 1121. The second pull rope 28 passes through the wire ring 29. When the first hinge shaft 231 rotates and the first flip plate 23 opens, the second pull rope 28 pulls the rotating column 271 to rotate, so that the absorbent cotton 26 adheres to the outer wall of the first filter plate 18.
[0053] The cleaning component 2 also includes a disassembly plate. The outer wall of the housing 11 is provided with a disassembly port, which is connected to the outdoor air inlet cavity 1121. The disassembly plate is fixedly connected to the outer wall of the housing 11 by screws. The disassembly plate covers the disassembly port, which makes it easy for the user to clean the outdoor air inlet cavity 1121.
[0054] Reference Figure 2 and Figure 5The warning component 3 includes a connecting column 31, an impeller 32, and a ribbon 33. The outer wall of the housing 11 is provided with a connection port 119, which is located below the outdoor air inlet 1161. The axis of the connection port 119 is parallel to the axis of the outdoor air inlet 1161. The connecting column 31 is coaxially rotatably connected to the inner wall of the connection port 119. The impeller 32 is fixedly connected to one end of the connecting column 31 and is located below the overflow port 242. The ribbon 33 is fixedly connected to the other end of the connecting column 31 and is located on the outer periphery of the housing 11. Water flowing out of the overflow port 242 causes the impeller 32 to rotate, and the rotation of the ribbon 33 reminds the user that water has accumulated inside the fresh air unit 110.
[0055] The implementation principle of a fresh air unit in this application embodiment is as follows: After rainwater enters the outdoor air inlet cavity 1121 from the outdoor air inlet 1161, the water receiving tube 24 receives water and the weight increases. The first pull rope 25 drives the first hinge shaft 231 to rotate, the first flip plate 23 opens, and the second pull rope 28 drives the rotating column 271 to rotate. The moisture-absorbing cotton 26 covers the first filter plate 18. At this time, the overflow port 242 is connected to the drain cavity 1171. The impeller 32 rotates and the ribbon 33 dances, reminding the user that the fresh air unit 110 has water in it.
[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A fresh air ventilator, characterized in that: The device includes a housing (11), one end of which is provided with an outdoor air inlet (1161) and an outdoor air outlet (1162), and the other end of which is provided with an indoor air inlet (1163) and an indoor air outlet (1164). The outdoor air inlet (1161) is connected to the indoor air outlet (1164), and the indoor air inlet (1163) is connected to the outdoor air outlet (1162). The housing (11) is provided with a drainage chamber (1171), which is located below the outdoor air inlet (1161). The housing (11) is provided with a drainage outlet (1172), which is connected to the outdoor air inlet (1161) and the drainage chamber (1171). It also includes a fixed cylinder (22) and a first flip plate (23). The fixed cylinder (22) is fixedly connected to the inner wall of the outdoor air inlet cavity (1121). The fixed cylinder (22) is coaxially arranged with the drain outlet (1172). The two ends of the first flip plate (23) are fixedly connected to a first hinge shaft (231). The first hinge shaft (231) is rotatably connected to the fixed cylinder (22) around its own axis. The rotation axis of the first hinge shaft (231) is horizontal. The first flip plate (23) is used to cover the drain outlet (1172). It also includes a water receiving tube (24) and a first pull rope (25). The housing (11) is provided with a through hole (1174). The through hole (1174) is located on the outer periphery of the fixed tube (22). The water receiving tube (24) is slidably connected to the inner wall of the through hole (1174). The height of the water receiving tube (24) is less than the height of the first hinge shaft (231). One end of the first pull rope (25) is fixedly connected to the water receiving tube (24), and the other end of the first pull rope (25) is fixedly connected to the outer wall of the first hinge shaft (231).
2. A fresh air ventilator according to claim 1, characterized in that: It also includes a first baffle (12), a second baffle (13), a heat exchange core (15), a first partition plate (16), and a second partition plate (17). The housing (11) is provided with a receiving cavity (111). The first baffle (12) and the second baffle (13) are both fixedly connected to the inner wall of the receiving cavity (111). The first baffle (12) and the second baffle (13) are parallel to each other. The first baffle (12) and the second baffle (13) divide the receiving cavity (111) into a first mounting cavity (112), a second mounting cavity (113), and a third mounting cavity (114). The second mounting cavity (113) is located between the first baffle (12) and the second baffle (13). The heat exchange core (15) is detachably connected to the inner wall of the second mounting cavity (113). The first partition plate (16) is fixedly connected to the inner wall of the first mounting cavity (112). The first partition plate (16) divides the first mounting cavity (112) into an outdoor area. The third mounting cavity (114) has an air inlet chamber (1121) and an outdoor air outlet chamber (1122). The second partition plate (17) is fixedly connected to the inner wall of the third mounting cavity (114). The second partition plate (17) divides the third mounting cavity (114) into an indoor air inlet chamber (1141) and an indoor air outlet chamber (1142). The outdoor air inlet (1161) is connected to the outdoor air inlet chamber (1121), and the outdoor air outlet (1162) is connected to the outdoor air outlet chamber (1122). The indoor air inlet (1163) is connected to the indoor air inlet cavity (1141), the indoor air outlet (1164) is connected to the indoor air outlet cavity (1142), the outdoor air inlet cavity (1121) is connected to the indoor air outlet cavity (1142) through the heat exchange core (15), the outdoor air outlet cavity (1122) is connected to the indoor air inlet cavity (1141) through the heat exchange core (15), and the drain outlet (1172) is connected to the outdoor air inlet cavity (1121).
3. A fresh air ventilator according to claim 2, characterized in that: The heat exchange core (15) is slidably connected to the inner wall of the second mounting cavity (113). The sliding direction of the heat exchange core (15) is parallel to the length direction of the first baffle (12). The heat exchange core (15) divides the second mounting cavity (113) into a first connecting cavity (1131), a second connecting cavity (1132), a third connecting cavity (1133), and a fourth connecting cavity (1134).
4. A fresh air ventilator according to claim 3, characterized in that: The height of the outdoor air inlet (1161) is less than the height of the outdoor air outlet (1162), and the height of the indoor air inlet (1163) is less than the height of the indoor air outlet (1164).
5. A fresh air ventilator according to claim 3, characterized in that: It also includes a first filter plate (18) and a second filter plate (19), the first filter plate (18) being slidably connected to the inner wall of the first communicating cavity (1131), and the second filter plate (19) being slidably connected to the inner wall of the fourth communicating cavity (1134).
6. A fresh air ventilator according to claim 3, characterized in that: The outer wall of the water receiving tube (24) is provided with an overflow port (242), which is used to connect to the drain chamber (1171).
7. A fresh air ventilator according to claim 3, characterized in that: It also includes a moisture-absorbing cotton (26) and a frame (27). The moisture-absorbing cotton (26) is fixedly connected to the inner wall of the frame (27). A rotating column (271) is fixedly connected to one end of the frame (27). The rotating column (271) is rotatably connected to the inner wall of the first communicating cavity (1131) around its own axis. The moisture-absorbing cotton (26) is used to cover the first filter plate (18).
8. A fresh air ventilator according to claim 7, characterized in that: It also includes a second pull rope (28) and a guide ring (29). One end of the second pull rope (28) is fixedly connected to the outer wall of the first hinge shaft (231), and the other end of the second pull rope (28) is fixedly connected to the outer wall of the rotating column (271). The guide ring (29) is fixedly connected to the bottom wall of the outdoor air inlet cavity (1121). The second pull rope (28) passes through the guide ring (29).