An indoor fresh air system device for construction engineering

Abstract

This invention discloses an indoor fresh air system device for building engineering, comprising a housing, with an air inlet pipe and an air outlet pipe fixedly installed on both side walls of the housing. A partition is fixedly installed on the inner wall of the housing, and a slot is provided on the side wall of the partition. An odor-removing component is disposed on the inner wall of the slot. The odor-removing component includes a fixing box, the outer surface of which is fixedly connected to the inner wall of the slot. A water pipe is fixedly installed on the lower surface of the fixing box, and the lower surface of the water pipe is fixedly connected to the inner wall of the bottom surface of the housing. A spray head is connected to the upper surface of the water pipe. In this invention, water separated from the air is used to purify and deodorize the air, effectively removing odorous gases from the air and further improving the purification capacity of the fresh air system device in building engineering.

Description

Technical Field

[0001] This invention belongs to the field of fresh air technology, and in particular relates to an indoor fresh air system device for building engineering. Background Technology

[0002] A fresh air system is an independent air handling system consisting of a supply air system and an exhaust air system. With the use of synthetic building materials and the improvement of building airtightness in construction projects, the concentration of pollutants such as toxic gases indoors has increased significantly. The emergence of zinc powder systems has greatly solved this problem. Fresh air systems can exhaust toxic gases from indoors and then draw outdoor air into the room. When passing through the fresh air system, the outdoor air is purified and filtered, thus ensuring the freshness of indoor air.

[0003] Most current fresh air systems use electrostatic adsorption or physical filtration. These two methods mainly treat dust in the air, but cannot purify odor-carrying ions in the air, resulting in unpleasant odors in the air entering the room. Furthermore, if the filter plates in the fresh air system are not cleaned for a long time, their filtration efficiency will be affected. Summary of the Invention

[0004] The purpose of this invention is to provide an indoor fresh air system device for building engineering in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an indoor fresh air system device for building engineering, comprising a housing, wherein an air inlet pipe and an air outlet pipe are fixedly installed on both side walls of the housing, a partition is fixedly installed on the inner wall of the housing, a slot is provided on the side wall of the partition, and an odor-eliminating component is provided on the inner wall of the slot. The odor-eliminating component includes a fixing box, the outer surface of the fixing box is fixedly connected to the inner wall of the slot, a water pipe is fixedly installed on the lower surface of the fixing box, the lower surface of the water pipe is fixedly connected to the inner wall of the bottom surface of the housing, and a spray head is connected to the upper surface of the water pipe.

[0006] In one or more embodiments, a liquid bladder is fixedly installed on the inner wall of the bottom surface of the fixed box, the lower surface of the liquid bladder is connected to one end of the water pipe, a movable groove is provided on the side wall of the fixed box, a fixed rod is fixedly installed on the side wall of the fixed box, and a limit plate is slidably installed on the outer surface of the fixed rod.

[0007] In one or more embodiments, a telescopic spring is fixedly installed on the side wall of the limiting plate, and one end of the telescopic spring is fixedly connected to the side wall of the fixing box. A fixing rod passes through the telescopic spring, a pressure plate is fixedly installed on the outer surface of the limiting plate, a connecting rod is fixedly installed on the side wall of the pressure plate, one end of the connecting rod extends into the fixing box, and a squeezing plate is fixedly installed on one end of the connecting rod. The side wall of the squeezing plate is fixedly connected to the side wall of the liquid bladder, and a dust removal assembly is provided on the side wall of the fixing box.

[0008] In one or more embodiments, an air collecting hood is fixedly installed on the outer surface of the housing, and ventilation pipes are fixedly installed on both side walls of the air collecting hood. One end of the ventilation pipe extends into the interior of the air collecting hood, and the other end extends into the interior of the housing. A movable groove is provided on the side wall of the housing, and a protective cover is slidably installed on the inner wall of the movable groove via a sliding block. An opening is provided on the side wall of the housing.

[0009] In one or more embodiments, the dust removal assembly includes a reciprocating screw and a sliding rod. One end of the reciprocating screw is rotatably connected to the outer surface of the fixed box, and the other end of the reciprocating screw extends into the air collecting hood. A wind-guiding plate is fixedly installed at the other end of the reciprocating screw. One end of the sliding rod is fixedly connected to the outer surface of the fixed box, and the other end of the sliding rod is fixedly connected to the inner wall of the housing.

[0010] In one or more embodiments, a sliding plate is threaded onto the outer surface of the reciprocating screw, the inner wall of the sliding plate is slidably connected to the outer surface of the slide rod, a connecting plate is fixedly installed on the side wall of the sliding plate, a cleaning brush is fixedly installed at one end of the connecting plate, and a fixing plate is fixedly installed on the upper surface of the sliding plate.

[0011] In one or more embodiments, an exhaust pump and an air heat exchanger are fixedly installed on the inner wall of the housing, and mounting grooves are provided on the side walls of both the housing and the partition. A coarse filter plate and a fine filter plate are movably installed on the inner wall of the housing through the mounting grooves, and a water filtration assembly is provided on the other side wall of the partition.

[0012] In one or more embodiments, the water filtration assembly includes a gas collection hood, the two side walls of the gas collection hood being fixedly connected to the inner wall of the housing and the side wall of the partition, respectively, a steam-water separator being fixedly installed at the air inlet of the gas collection hood, and a water storage box being fixedly installed at the water outlet of the steam-water separator.

[0013] In one or more embodiments, a placement box is fixedly installed on the lower surface of the housing, the lower surface of the water storage box is fixedly connected to the inner wall of the bottom surface of the placement box, a hose is fixedly installed on the side wall of the water storage box, one end of the hose extends into the fixed box, one end of the hose communicates with the liquid bladder, and a one-way valve is provided on the inner wall of the hose.

[0014] In one or more embodiments, both the coarse filter plate and the fine filter plate are provided with sliding grooves on their side walls. A compression spring is fixedly installed on the inner wall of the sliding groove. A mounting plate is fixedly installed on one end of the compression spring. One end of the mounting plate is slidably connected to the inner wall of the sliding groove. The other end of the mounting plate is provided with a slot. The other end of the mounting plate extends into the interior of the housing.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. In this invention, by incorporating an odor-removing component, the sliding plate moves, causing the fixed plate to shift. During this movement, the fixed plate compresses the pressure plate. The pressure plate, via a connecting rod and limited by a limiting plate, then compresses the liquid bladder, causing the separated water inside to flow into a water pipe and be sprayed out through a spray nozzle. This absorbs ions that generate odors within the hot air, achieving a purification effect. When the fixed plate moves to the other end of the reciprocating screw, a telescopic spring pushes the pressure plate outward, causing the pressure plate to reset via the connecting rod. Simultaneously, separated water from the water storage box is drawn into the storage box through a flexible hose. This utilizes the separated water in the air to purify and deodorize the air, effectively removing odorous gases and further improving the purification capacity of the fresh air system in building construction.

[0017] 2. In this invention, by incorporating a dust removal component, some air flows through the ventilation duct into the air collection hood as it passes through the housing. Because the airflow velocity within the ventilation duct is too high, the air entering the air collection hood blows the air deflector plate, causing it to rotate a reciprocating screw. The reciprocating screw, through its threads, causes a sliding plate to move back and forth on its surface under the limit of a sliding rod. The sliding plate, via a connecting plate, drives a cleaning brush to clean the dust filtered from the sidewalls of the fine filter plate. Utilizing wind as power reduces energy consumption and significantly extends the service life of the fine filter plate, while also improving its filtration efficiency.

[0018] 3. In this invention, by setting up a water filtration component, indoor air is discharged to the outside by the fresh air system device through the exhaust pump. When passing through the fresh air system device, it will pass through the steam-water separator. At this time, the hot air will separate the moisture in the air in the steam-water separator, and then flow into the water storage box through the water outlet for storage, thus reusing resources, improving the utilization rate of resources, and also achieving the beneficial effect of saving resources. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an indoor fresh air system device for building engineering according to an embodiment of the present invention.

[0020] Figure 2 This is a three-dimensional structural schematic diagram of an indoor fresh air system device for building engineering according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of an indoor fresh air system device for building construction according to an embodiment of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the dust removal component in an indoor fresh air system device for building engineering according to an embodiment of the present invention.

[0023] Figure 5 This is an exploded structural diagram of the odor-removing component in an indoor fresh air system device for building engineering according to an embodiment of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of a water filtration component in an indoor fresh air system device for building engineering according to an embodiment of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of a coarse filter plate in an indoor fresh air system device for building engineering according to an embodiment of the present invention.

[0026] Legend:

[0027] 1. Housing; 2. Inlet duct; 3. Exhaust duct; 4. Air collector hood; 5. Ventilation duct; 6. Protective cover; 7. Placement box; 8. Movable plate; 9. Partition plate; 10. Coarse filter plate; 11. Fine filter plate; 12. Exhaust pump; 13. Air heat exchanger; 14. Dust removal assembly; 141. Reciprocating screw; 142. Slide rod; 143. Sliding plate; 144. Air guide plate; 145. Connecting plate; 146. Cleaning brush; 147. Fixing plate; 5. Odor-neutralizing component; 151. Fixing box; 152. Water pipe; 153. Spray head; 154. Liquid bladder; 155. Fixing rod; 156. Telescopic spring; 157. Pressure plate; 158. Limiting plate; 159. Connecting rod; 1510. Squeezing plate; 16. Water filter component; 161. Gas collection hood; 162. Gas-water separator; 163. Water storage box; 164. Hose; 17. Slide groove; 18. Compression spring; 19. Mounting plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-7 The present invention provides a technical solution: an indoor fresh air system device for building engineering, including a housing 1, an air inlet pipe 2 and an air outlet pipe 3 are fixedly installed on both sides of the housing 1, a partition 9 is fixedly installed on the inner wall of the housing 1, a groove is provided on the side wall of the partition 9, and an odor removal component 15 is provided on the inner wall of the groove.

[0030] The odor-eliminating component 15 includes a fixing box 151, the outer surface of which is fixedly connected to the inner wall of the slot. A water pipe 152 is fixedly installed on the lower surface of the fixing box 151, and the lower surface of the water pipe 152 is fixedly connected to the inner wall of the bottom surface of the housing 1. A spray head 153 is connected to the upper surface of the water pipe 152, and a liquid bladder 154 is fixedly installed on the inner wall of the bottom surface of the fixing box 151. The lower surface of the liquid bladder 154 is connected to one end of the water pipe 152. A movable groove is provided on the side wall of the fixing box 151, and a fixing rod 155 is fixedly installed on the side wall of the fixing box 151. A limit plate 158 is slidably installed on the outer surface of the fixing rod 155, and a telescopic spring 156 is fixedly installed on the side wall of the limit plate 158. One end of the telescopic spring 156 is fixedly connected to the side wall of the fixing box 151, and the fixing rod 155 passes through the telescopic spring 156. A pressure plate 157 is fixedly installed on the outer surface of the limiting plate 158, and a connecting rod 159 is fixedly installed on the side wall of the pressure plate 157. One end of the connecting rod 159 extends into the fixed box 151, and a squeezing plate 1510 is fixedly installed on the other end of the connecting rod 159. The side wall of the squeezing plate 1510 is fixedly connected to the side wall of the liquid bladder 154, and a dust removal assembly 14 is provided on the side wall of the fixed box 151.

[0031] As the sliding plate 143 moves, it causes the fixed plate 147 to shift, and the fixed plate 147 compresses the pressure plate 157 during its movement. At this time, the pressure plate 157, under the limitation of the limiting plate 158 and via the connecting rod 159, drives the squeezing plate 1510 to squeeze the liquid bladder 154. The separated water in the liquid bladder 154 flows into the water pipe 152 and is then sprayed out through the spray nozzle, absorbing odorous ions from the hot air, thereby achieving a purification effect. When the fixed plate 147 moves to the other end of the reciprocating screw 141, the telescopic spring 156 will spring the pressure plate 157 outward, thereby driving the squeezing plate 1510 to reset the liquid bladder 154 via the connecting rod 159. At the same time, the separated water in the water storage box 163 will be drawn into the water storage box 163 through the hose 164.

[0032] A wind collector hood 4 is fixedly installed on the outer surface of the housing 1, and ventilation pipes 5 are fixedly installed on both side walls of the wind collector hood 4. One end of the ventilation pipe 5 extends into the interior of the wind collector hood 4, and the other end extends into the interior of the housing 1. A movable groove is provided on the side wall of the housing 1, and a protective cover 6 is slidably installed on the inner wall of the movable groove via a sliding block. An opening is provided on the side wall of the housing 1. The dust removal assembly 14 includes a reciprocating screw 141 and a sliding rod 142. One end of the reciprocating screw 141 is rotatably connected to the outer surface of the fixed box 151, and the other end of the reciprocating screw 141 extends into the wind collector hood 4. A wind-attracting plate 144 is fixedly installed on the other end of the reciprocating screw 141. One end of the sliding rod 142 is fixedly connected to the outer surface of the fixed box 151. The other end of the sliding rod 142 is fixedly connected to the inner wall of the housing 1, and a sliding plate 143 is threaded onto the outer surface of the reciprocating screw 141. The inner wall of the sliding plate 143 is slidably connected to the outer surface of the sliding rod 142. A connecting plate 145 is fixedly installed on the side wall of the sliding plate 143. A cleaning brush 146 is fixedly installed at one end of the connecting plate 145. A fixing plate 147 is fixedly installed on the upper surface of the sliding plate 143.

[0033] When air passes through the inside of the housing 1, some air will flow into the air collection hood 4 through the ventilation pipe 5. Because the air velocity in the ventilation pipe 5 is too fast at this time, the air will blow the air deflector 144 when it enters the air collection hood 4, causing the air deflector 144 to drive the reciprocating screw 141 to rotate. At this time, the reciprocating screw 141 will cause the sliding plate 143 to move back and forth on its surface under the limit of the slide rod 142 through the thread. The sliding plate 143 will drive the cleaning brush 146 through the connecting plate 145 to clean the dust filtered on the side wall of the fine filter plate 11.

[0034] An exhaust pump 12 and an air heat exchanger 13 are fixedly installed on the inner wall of the housing 1. Mounting grooves are provided on the side walls of both the housing 1 and the partition 9. A coarse filter plate 10 and a fine filter plate 11 are movably installed on the inner wall of the housing 1 via the mounting grooves. A water filtration assembly 16 is provided on the other side wall of the partition 9. The water filtration assembly 16 includes a gas collection hood 161. The two side walls of the gas collection hood 161 are fixedly connected to the inner wall of the housing 1 and the side wall of the partition 9, respectively. A steam-water separator 162 is fixedly installed at the air inlet of the gas collection hood 161, and a water storage box 163 is fixedly installed at the outlet of the steam-water separator 162. A placement box 7 is fixedly installed on the lower surface of the housing 1. The lower surface of the water storage box 163 is fixedly connected to the inner wall of the bottom surface of the placement box 7. A flexible hose 164 is fixedly installed on the side wall of the water storage box 163. One end of the hose 164 extends into the fixed box 151, and the other end of the hose 164 is connected to the liquid bladder 154. A one-way valve is provided on the inner wall of the hose 164.

[0035] The housing 1 is fixed to the wall with bolts, and then pipes are used to fix and connect the air inlet pipe 2 and exhaust pipe 3 on the two side walls of the housing 1, respectively, with one end of the pipes extending outside the wall. When the new air system is working, the exhaust pump 12 draws air from the outside into the room through the air inlet pipe 2. When the air passes through the fresh air system, it first passes through the coarse filter plate 10, which filters out dust particles in the air. Then the air passes through the air heat exchanger 13, which turns the cold air into hot air. The hot air passes through the fine filter plate 11 again for filtration, and then the exhaust pump 12 delivers the filtered hot air into the room. The indoor air is exhausted to the outside by the fresh air system through the exhaust pump 12. When passing through the fresh air system, it passes through the vapor separator 162, where the hot air separates the moisture in the air and then flows through the outlet into the water storage box 163 for storage.

[0036] Both the coarse filter plate 10 and the fine filter plate 11 have sliding grooves 17 on their side walls, and compression springs 18 are fixedly installed on the inner walls of the sliding grooves 17. One end of the compression spring 18 is fixedly installed with a mounting plate 19, one end of the mounting plate 19 is slidably connected to the inner wall of the sliding groove 17, the other end of the mounting plate 19 is provided with a slot, and the other end of the mounting plate 19 extends into the interior of the housing 1.

[0037] When the coarse filter plate 10 and the fine filter plate 11 need to be replaced, push the protective cover 6 to one side of the housing 1 to expose the disassembly port. Then, use a flathead screwdriver inserted into the slot to move the mounting plate 19 to one side of the sliding groove 17. When the mounting plate 19 moves to a certain position, it will disengage from the moving groove on the side wall of the housing 1. Then, remove the coarse filter plate 10 and the fine filter plate 11. During replacement, after aligning the mounting plate 19 with the moving groove, the compression spring 18 will automatically fix the coarse filter plate 10 and the fine filter plate 11.

[0038] Working principle: The housing 1 is fixedly installed on the wall with bolts, and then pipes are used to fix and connect the air inlet pipe 2 and the air outlet pipe 3 on the two side walls of the housing 1 respectively, with one end of the pipes extending outside the wall. When the new house system is working, the exhaust pump 12 draws air from the outside to the inside through the air inlet pipe 2. When the air passes through the fresh air system, it first passes through the coarse filter plate 10, which filters out dust particles in the air. Then the air passes through the air heat exchanger 13, which turns the cold air into hot air. The hot air passes through the fine filter plate 11 again for filtration. Then the exhaust pump 12 delivers the filtered hot air to the room. When the air passes through the inside of the housing 1, some air flows into the air collection hood 4 through the ventilation pipe 5. Because the air velocity in the ventilation pipe 5 is too fast, the air blows the air deflector plate 144 when it enters the air collection hood 4. This causes the air deflector plate 144 to drive the reciprocating screw 141 to rotate. At this time, the reciprocating screw 141 causes the sliding plate 143 to move back and forth on its surface under the limit of the sliding rod 142 through the thread. The sliding plate 143, via the connecting plate 145, drives the cleaning brush 146 to clean the dust filtered from the side wall of the fine filter plate 11. As the sliding plate 143 moves, it also moves the fixed plate 147. During this movement, the fixed plate 147 presses against the pressure plate 157. At this time, the pressure plate 157, via the connecting rod 159 and limited by the limiting plate 158, drives the squeezing plate 1510 to squeeze the liquid bladder 154. The separated water inside the liquid bladder 154 flows into the water pipe 152 and is then sprayed out through the spray nozzle, absorbing ions that produce odors inside the hot air, thus achieving a purification effect.

[0039] When the fixed plate 147 moves to the other end of the reciprocating screw 141, the telescopic spring 156 will push the pressure plate 157 outward, thereby driving the compression plate 1510 to reset the liquid bladder 154 through the connecting rod 159. At the same time, the separated water in the water storage box 163 will be drawn into the water storage box 163 through the hose 164. The indoor air will be exhausted to the outside by the fresh air system device through the exhaust pump 12. When passing through the fresh air system device, it will pass through the steam-water separator 162. At this time, the hot air will separate the moisture in the air in the steam-water separator 162. Then the water flows through the outlet into the water storage box 163 for storage. When the coarse filter plate 10 and the fine filter plate 11 need to be replaced, push the protective cover 6 to one side of the housing 1 to expose the disassembly port. Then, use a flathead screwdriver to insert into the slot and move the mounting plate 19 to one side of the slide groove 17. When the mounting plate 19 moves to a certain position, it will disengage from the moving groove on the side wall of the housing 1. Then, remove the coarse filter plate 10 and the fine filter plate 11. When replacing them, align the mounting plate 19 with the moving groove, and the compression spring 18 will automatically fix the coarse filter plate 10 and the fine filter plate 11.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An indoor fresh air system device for building engineering, comprising a housing (1), wherein an air inlet pipe (2) and an air outlet pipe (3) are fixedly installed on both side walls of the housing (1), and a partition plate (9) is fixedly installed on the inner wall of the housing (1), characterized in that: The partition (9) has a slot on its side wall and an odor-eliminating component (15) on the inner wall of the slot. The odor-eliminating component (15) includes a fixing box (151), the outer surface of the fixing box (151) is fixedly connected to the inner wall of the slot, a water pipe (152) is fixedly installed on the lower surface of the fixing box (151), the lower surface of the water pipe (152) is fixedly connected to the inner wall of the bottom surface of the shell (1), and a spray head (153) is connected to the upper surface of the water pipe (152). A liquid bladder (154) is fixedly installed on the inner wall of the bottom surface of the fixed box (151). The lower surface of the liquid bladder (154) is connected to one end of the water pipe (152). A movable groove is provided on the side wall of the fixed box (151). A fixing rod (155) is fixedly installed on the side wall of the fixed box (151). A limit plate (158) is slidably installed on the outer surface of the fixing rod (155). A telescopic spring (156) is fixedly installed on the side wall of the limiting plate (158). One end of the telescopic spring (156) is fixedly connected to the side wall of the fixed box (151). The fixing rod (155) passes through the telescopic spring (156). A pressure plate (157) is fixedly installed on the outer surface of the limiting plate (158). A connecting rod (159) is fixedly installed on the side wall of the pressure plate (157). One end of the connecting rod (159) extends into the fixed box (151). A squeezing plate (1510) is fixedly installed on one end of the connecting rod (159). The side wall of the squeezing plate (1510) is fixedly connected to the side wall of the liquid bladder (154). A dust removal assembly (14) is provided on the side wall of the fixed box (151). A wind collector hood (4) is fixedly installed on the outer surface of the housing (1). A ventilation pipe (5) is fixedly installed on both sides of the wind collector hood (4). One end of the ventilation pipe (5) extends into the interior of the wind collector hood (4), and the other end of the ventilation pipe (5) extends into the interior of the housing (1). A moving groove is provided on the side wall of the housing (1). A protective cover (6) is slidably installed on the inner wall of the moving groove by a sliding block. An opening is provided on the side wall of the housing (1). The dust removal assembly (14) includes a reciprocating screw (141) and a slide rod (142). One end of the reciprocating screw (141) is rotatably connected to the outer surface of the fixed box (151), and the other end of the reciprocating screw (141) extends into the air collecting hood (4). A wind-attracting plate (144) is fixedly installed on the other end of the reciprocating screw (141). One end of the slide rod (142) is fixedly connected to the outer surface of the fixed box (151), and the other end of the slide rod (142) is fixedly connected to the inner wall of the housing (1).

2. The indoor fresh air system device for building engineering according to claim 1, characterized in that, The outer surface of the reciprocating screw (141) is threaded with a sliding plate (143). The inner wall of the sliding plate (143) is slidably connected to the outer surface of the slide rod (142). A connecting plate (145) is fixedly installed on the side wall of the sliding plate (143). A cleaning brush (146) is fixedly installed at one end of the connecting plate (145). A fixing plate (147) is fixedly installed on the upper surface of the sliding plate (143).

3. The indoor fresh air system device for building engineering according to claim 2, characterized in that, An exhaust pump (12) and an air heat exchanger (13) are fixedly installed on the inner wall of the housing (1). Mounting grooves are provided on the side walls of the housing (1) and the partition (9). A coarse filter plate (10) and a fine filter plate (11) are movably installed on the inner wall of the housing (1) through the mounting grooves. A water filtration assembly (16) is provided on the other side wall of the partition (9).

4. The indoor fresh air system device for building engineering according to claim 3, characterized in that, The water filtration assembly (16) includes a gas collection hood (161), the two side walls of the gas collection hood (161) are fixedly connected to the inner wall of the shell (1) and the side wall of the partition (9), respectively, a steam-water separator (162) is fixedly installed at the air inlet of the gas collection hood (161), and a water storage box (163) is fixedly installed at the water outlet of the steam-water separator (162).

5. The indoor fresh air system device for building engineering according to claim 4, characterized in that, A placement box (7) is fixedly installed on the lower surface of the housing (1). The lower surface of the water storage box (163) is fixedly connected to the inner wall of the bottom surface of the placement box (7). A hose (164) is fixedly installed on the side wall of the water storage box (163). One end of the hose (164) extends into the fixed box (151). One end of the hose (164) is connected to the liquid bladder (154). A one-way valve is provided on the inner wall of the hose (164).

6. The indoor fresh air system device for building engineering according to claim 5, characterized in that, Both the coarse filter plate (10) and the fine filter plate (11) are provided with sliding grooves (17) on their side walls. A compression spring (18) is fixedly installed on the inner wall of the sliding groove (17). An installation plate (19) is fixedly installed on one end of the compression spring (18). One end of the installation plate (19) is slidably connected to the inner wall of the sliding groove (17). The other end of the installation plate (19) is provided with a slot. The other end of the installation plate (19) extends into the interior of the housing (1).

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