A fresh air system for intelligent doors and windows

Abstract

The present invention relates to the field of indoor air conditioning technology, and discloses a fresh air system for intelligent doors and windows, the fresh air system comprising an air supply channel and an exhaust channel arranged inside the door and window frames, a pre-processing unit, an electronic reversing valve, an air exchange unit, a collection unit and a control terminal, wherein the pre-processing unit is arranged at the air inlet side of the exhaust channel; the air exchange unit is used to send indoor air into the air inlet of the exhaust channel and / or send outdoor air into the air inlet of the air supply channel; the collection unit is used to collect indoor and / or outdoor air quality data and upload it to the control terminal, and the control terminal controls the electronic reversing valve to connect the air outlet of the pre-processing unit to the exhaust channel or the air supply channel according to a preset control rule, and controls the start and stop of the air exchange unit and the pre-processing unit to update the indoor air. The fresh air system is designed to be embedded in the door and window frames, which can save indoor effective space and avoid damage to the load-bearing wall.

Description

Technical Field

[0001] The present invention relates to the technical field of indoor air conditioning, and in particular to a fresh air system for intelligent doors and windows, and in particular to a fresh air system for intelligent doors and windows used for indoor air conditioning. Background Art

[0002] Traditional doors and windows have two structures: fixed and movable. Among them, movable doors and windows have good ventilation effects, can maintain a good indoor living environment, and are highly applicable, and are deeply loved by the public; but because windows need to be opened for ventilation, when users forget to close the windows when they go out, it is easy for rain, sand and dust to enter the room, causing economic losses and unnecessary cleaning work in the later stage. What is more serious is the risk of falling objects from high altitudes due to the negligence of users. Fixed doors and windows have good sealing properties, such as floor-to-ceiling windows, which can effectively solve the above defects; but the indoor ventilation effect is poor and it is impossible to create a suitable living environment. Therefore, it is often necessary to add a ventilation system, such as drilling holes in the wall and using a wall-mounted fresh air purifier indoors; this not only damages the load-bearing walls, but also occupies the effectively utilized space indoors, and cannot meet the user's needs. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a fresh air system for intelligent doors and windows to solve the technical problems mentioned in the prior art.

[0004] A fresh air system for intelligent doors and windows, the fresh air system comprising an air supply channel and an air exhaust channel arranged inside the door and window frame, the two ends of the air supply channel and the air exhaust channel respectively extending to connect indoors and outdoors, the fresh air system also comprising:

[0005] A pretreatment unit is arranged at the air inlet side of the exhaust passage, and an electronic reversing valve is arranged at the air outlet end of the pretreatment unit, and the electronic reversing valve is used to switch the air outlet end of the pretreatment unit to the air outlet connected to the exhaust passage or the air supply passage, so as to pass the purified indoor air into the exhaust passage or the air supply passage;

[0006] An air exchange unit is provided at the air inlet of the air supply channel and / or the air inlet of the exhaust channel, and is used to send indoor air into the air inlet of the exhaust channel and / or send outdoor air into the air inlet of the air supply channel. When the air exchange unit simultaneously sends indoor air and outdoor air into the air supply channel, air convection is formed to balance the temperature difference between the outdoor air output from the air supply channel and the indoor air;

[0007] A collection unit, used for collecting indoor and / or outdoor air quality data;

[0008] The control terminal is used to receive the indoor and / or outdoor air quality data collected by the collection unit, and control the electronic reversing valve to connect the air outlet of the pretreatment unit to the exhaust channel or the air supply channel according to a preset control rule, and control the start and stop of the air exchange unit and the pretreatment unit to update the indoor air.

[0009] Optionally, the preset control rule includes:

[0010] ① Ventilation mode: control the electronic reversing valve to connect the air outlet of the pre-treatment unit to the exhaust channel, and control the air exchange units at the air inlets of the air supply channel and the exhaust channel to start simultaneously, so as to supply outdoor air and exhaust indoor air;

[0011] ② Internal circulation ventilation mode: control the electronic reversing valve to connect the air outlet of the pre-treatment unit to the air supply channel, and control the pre-treatment unit and the air exchange unit located at the air inlet of the exhaust channel to start at the same time, so that the indoor air is passed into the air supply channel after purification and flows back to the room;

[0012] ③ Two-way flow circulation ventilation mode: control the electronic reversing valve to connect the air outlet of the pretreatment unit to the air supply channel, and control the pretreatment unit and the air exchange units at the air inlets of the air supply channel and the exhaust channel to start at the same time, so that the indoor air is passed into the air supply channel after purification and mixed with the outdoor air to form air convection and transported to the room, so as to balance the temperature difference between the outdoor air output from the air supply channel and the indoor air.

[0013] Optionally, the control terminal is configured with a processor, and the processor executes the preset control rule according to a preset logic rule, and the preset logic rule is:

[0014] When the processor receives indoor air quality data that is lower than a preset standard value, it selects any one of the ventilation mode, the internal circulation ventilation mode or the two-way flow circulation ventilation mode and updates the indoor air according to a single operation or alternating operation mechanism;

[0015] When the processor receives outdoor air quality data that is lower than a preset standard value, it selects the internal circulation ventilation mode to update the indoor air.

[0016] Optionally, the air quality data includes formaldehyde concentration value, temperature value and / or humidity value of indoor air and carbon dioxide concentration value, temperature value and / or humidity value of outdoor air.

[0017] Optionally, the collection unit is evenly arranged with a plurality of collection nodes in the room according to a preset space matrix, and each of the collection nodes is configured with a formaldehyde detector and / or a first temperature and humidity measuring instrument to collect the formaldehyde concentration value, temperature value and / or humidity value of the indoor air to obtain first collection data and upload it to the control terminal, and the control terminal uses the maximum value or average value of several groups of the first collection data as the indoor air quality data;

[0018] The collection unit is equipped with a carbon dioxide detector and / or a second temperature and humidity measuring instrument outdoors and close to the air inlet side of the air supply channel to collect the carbon dioxide concentration, temperature and / or humidity values ​​of the outdoor air to obtain second collection data and upload it to the control terminal as outdoor air quality data.

[0019] Optionally, the preprocessing unit includes:

[0020] The lampshade is a hollow porous base tube, which is arranged in the exhaust passage, and has wind shields at both ends extending along the medium flow direction of the exhaust passage and detachably mounted thereon, the outer periphery of the wind shield extending to connect with the inner wall of the exhaust passage to form a flow passage between the outer periphery of the lampshade and the inner wall of the exhaust passage, and the wind shield is evenly provided with a plurality of flow holes along the axial direction of the flow passage;

[0021] An ultraviolet light source is arranged in the lampshade, and the ultraviolet light source emits ultraviolet light into the flow passage through the holes on the outer periphery of the lampshade to sterilize the indoor air passing through the flow holes.

[0022] Optionally, the air inlet of the air supply channel and the air outlet of the air exhaust channel are respectively provided with control valves;

[0023] The control valve is a one-way valve or a stop valve.

[0024] Optionally, the door and window frame has a U-shaped cavity inside, and a sound-absorbing plate with a microporous structure is installed in the U-shaped cavity, and the sound-absorbing plate divides the U-shaped cavity into the adjacent air supply channel and the air exhaust channel along a U-shaped track;

[0025] The muffler plate located in the middle of the U-shaped cavity is a baffled structure.

[0026] Optionally, the air exchange unit is a capacitive brushless cross-flow fan, and the capacitive brushless cross-flow fan is detachably mounted on the door and window frame;

[0027] An activated carbon adsorption layer is detachably provided on the air outlet side of the air exchange unit.

[0028] Optionally, the air outlet of the air supply channel is detachably provided with several groups of air volume adjustment controls, and the air volume adjustment controls include:

[0029] A cover plate, one end of which is provided at the air outlet of the air supply channel, and the other end of which is a magnetic conductor;

[0030] A fixing part, which is detachably mounted on a side of the cover plate away from the air outlet of the air supply channel;

[0031] An adjustment component is provided between the cover plate and the fixing portion, and the adjustment component comprises:

[0032] A positioning rod, the two ends of which are respectively connected to the cover plate and the opposite surfaces of the fixing portion, and can be telescopically moved along the axial direction thereof;

[0033] A plurality of groups of springs, with two ends of each group of springs respectively installed between the cover plate and the opposite surfaces of the fixing portion;

[0034] And a first electromagnet and a second electromagnet are arranged in sequence along the medium flow direction of the air supply channel, the first electromagnet and the second electromagnet are respectively installed on one side of the fixing part close to the cover plate, and are connected to the control terminal.

[0035] The beneficial effects that the present invention can produce include:

[0036] The intelligent fresh air system for doors and windows provided by the present invention can not only save the indoor space for effective use, but also avoid damage to the load-bearing wall by designing it embedded in the door and window frames, compared with the previous ventilation method of drilling holes on the wall to install the ventilation system. And by designing the pretreatment unit, electronic reversing valve, air exchange unit, collection unit and control terminal, on the basis of achieving indoor air renewal, the diversity of air renewal is enriched. It has ventilation mode, internal circulation ventilation mode and two-way flow circulation ventilation mode, which can reasonably control the indoor air, avoid excessive indoor heat loss and the introduction of substandard outdoor air; and, when the air exchange unit simultaneously sends indoor air and outdoor air into the air supply channel, air convection is formed to balance the temperature difference between the outdoor air output by the air supply channel and the indoor air, thereby enhancing the comfort of the living environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the fresh air system of the present invention;

[0038] Figure 2 For the present invention Figure 1 Schematic diagram of the internal structure;

[0039] Figure 3 For the present invention Figure 1 Explosion diagram at point A;

[0040] Figure 4 For the present invention Figure 3 A schematic diagram of the structure of the air volume adjustment control unit;

[0041] Figure 5 For the present invention Figure 1 Explosion diagram at point B;

[0042] Figure 6 For the present invention Figure 5 Rear view of the mounting plate;

[0043] Figure 7 For the present invention Figure 2 A schematic diagram of the structure of a pre-processing unit;

[0044] Figure 8 A control logic diagram of the fresh air system of the present invention;

[0045] Fig. 9 For the present invention Figure 8 A schematic diagram of the architecture of the first data collection;

[0046] Fig.10 For the present invention Figure 8 A schematic diagram of the architecture of the second data collection;

[0047] In the figure: 1. door and window frame, 2. air supply channel, 3. exhaust channel, 4. pretreatment unit, 5. electronic reversing valve, 6. air exchange unit, 7. collection unit, 8. control terminal, 9. processor, 10. formaldehyde detector, 11. first temperature and humidity measuring instrument, 12. carbon dioxide detector, 13. second temperature and humidity measuring instrument, 14. lampshade, 15. wind shield, 16. flow channel, 17. flow hole, 18. ultraviolet light source, 19. control valve, 20. silencer, 21. activated carbon adsorption layer, 22. air volume adjustment control, 23. cover plate, 24. fixing part, 25. positioning rod, 26. spring, 27. first electromagnet, 28. second electromagnet, 29. installation port, 30. installation plate, 31. positioning groove, 32. filter. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] See also Figure 1 and Figure 2As shown, the present invention provides a fresh air system for intelligent doors and windows, the fresh air system includes an air supply channel 2 and an exhaust channel 3 arranged inside the door and window frame 1, and the two ends of the air supply channel 2 and the exhaust channel 3 extend to connect indoors and outdoors respectively to achieve indoor air renewal; at the same time, in order to improve the single performance of traditional doors and windows during air conditioning, the inability to accurately control the effective air exchange of indoor and outdoor air, resulting in a large amount of indoor heat loss and outdoor substandard air flowing into the room, the fresh air system also includes a pre-processing unit 4, an air exchange unit 6, a collection unit 7 and a control terminal 8, wherein the pre-processing unit 4 is arranged at the inlet of the exhaust channel 3. On the wind side, the air outlet of the pretreatment unit 4 is provided with an electronic reversing valve 5, which is used to switch the air outlet of the pretreatment unit 4 to the air outlet connected to the exhaust channel 3 or the air supply channel 2, so as to pass the purified indoor air into the exhaust channel 3 for discharge to reduce air pollution, or pass the purified indoor air into the air supply channel 2 for recycling to reduce indoor heat loss; the air exchange unit 6 is arranged at the air inlet of the air supply channel 2 and / or the air inlet of the exhaust channel 3, and is used to send indoor air into the air inlet of the exhaust channel 3 and / or send outdoor air into the air inlet of the air supply channel 2 to control the indoor air. The exhaust and outdoor air supply are effectively controlled to avoid excessive indoor heat loss and the introduction of substandard outdoor air; the air exchange unit 6 simultaneously supplies indoor air and outdoor air into the air supply channel 2 to form air convection to balance the temperature difference between the outdoor air output by the air supply channel 2 and the indoor air, thereby enhancing the comfort of the living environment; the collection unit 7 is used to collect indoor and / or outdoor air quality data, and it can set the corresponding air composition detection equipment according to the user's usage needs. For example, when the user has an allergen to a certain substance (pollen) in the air, a dust sensor or a suspended particulate matter (PM) monitor can be set outdoors , slide-type particle sampler or laser particle counter, etc., and cyclonic pollen concentration detection method can also be used to effectively monitor the pollen content carried in the air; when the pollen content in the outdoor air is monitored to be greater than the preset threshold, the outdoor air is stopped from being sent into the room to further enhance the comfort of the living environment; the control terminal 8 is used to receive the indoor and / or outdoor air quality data collected by the collection unit 7, and control the electronic reversing valve 5 to connect the air outlet of the pretreatment unit 4 to the exhaust channel 3 or the air supply channel 2 according to the preset control rules, and control the start and stop of the air exchange unit 6 and the pretreatment unit 4 to update the indoor air. The fresh air system is embedded in the door and window frame 1. Compared with the previous ventilation method of drilling holes in the wall to install the ventilation system, it can not only save the effective use of indoor space, but also avoid damage to the load-bearing wall.

[0050] In the above, the fresh air system updates the indoor air according to the following preset control rules; the preset control rules are:

[0051] ① Ventilation mode: Control the electronic reversing valve 5 to connect the air outlet of the pre-treatment unit 4 to the exhaust channel 3, and control the air exchange units 6 at the air inlets of the air supply channel 2 and the exhaust channel 3 to start at the same time, so as to send outdoor air in and exhaust indoor air, so as to achieve a single ventilation effect. This mode is suitable for seasons with high temperature and good weather, such as summer, when the temperature difference between indoor and outdoor air is small, and can meet the basic ventilation needs of users;

[0052] ② Internal circulation ventilation mode: control the electronic reversing valve 5 to connect the air outlet of the pretreatment unit 4 to the air supply channel 2, and control the pretreatment unit 4 and the air exchange unit 6 located at the air inlet of the exhaust channel 3 to start at the same time, so that the indoor air is passed into the air supply channel 2 after purification and flows back to the room, so as to realize the recycling of indoor air; for example, in winter, the temperature difference between indoor and outdoor air is large, and this mode can effectively reduce the loss of indoor heat, which not only ensures the balance of indoor temperature, but also improves the freshness of indoor air, greatly enhancing the comfort of indoor environment; and, when there is sandstorm weather causing the outdoor air quality to be seriously substandard, this mode can also be used to update the indoor air;

[0053] ③ Two-way flow circulation ventilation mode: control the electronic reversing valve 5 to connect the air outlet of the pretreatment unit 4 to the air supply channel 2, and control the pretreatment unit 4 and the air exchange unit 6 at the air inlet of the air supply channel 2 and the exhaust channel 3 to start at the same time, so that the indoor air is passed into the air supply channel 2 after purification and mixed with the outdoor air to form air convection and transported to the room, which is used to balance the temperature difference between the outdoor air output by the air supply channel 2 and the indoor air; it should be noted that the two-way flow circulation ventilation mode and the ventilation mode can be used alternately to avoid the deposition of dirty air in the room under a slightly positive pressure state, thereby ensuring the effective renewal of indoor air.

[0054] Furthermore, if Figure 8 As shown, the control terminal 8 is equipped with a processor 9, and the processor 9 executes the preset control rules according to the preset logical rules. The preset logical rules are: when the processor 9 receives indoor air quality data lower than the preset standard value, it selects any one of the ventilation mode, internal circulation ventilation mode or two-way flow circulation ventilation mode and updates the indoor air according to the single operation or alternating operation mechanism; when the processor 9 receives outdoor air quality data lower than the preset standard value, it selects the internal circulation ventilation mode to update the indoor air. In the above, the user can choose to monitor the indoor air quality data and the outdoor air quality data alone or synchronously according to their own usage needs; wherein, during synchronous monitoring, the fresh air system can only select any one of the above three modes to update the indoor air according to the indoor air quality data when it monitors that the outdoor air quality data meets the standard, otherwise it can only select the internal circulation ventilation mode to update the indoor air.

[0055] In this embodiment, the air quality data includes the formaldehyde concentration value, temperature value and / or humidity value of the indoor air and the carbon dioxide concentration value, temperature value and / or humidity value of the outdoor air. It should be noted that in order to effectively monitor the sandstorm weather, a PM2.5 monitor can also be set up outdoors. Specifically, Fig. 9 As shown, the collection unit 7 is evenly arranged with a plurality of collection nodes in the room according to a preset space matrix, and each collection node is configured with a formaldehyde detector 10 and / or a first temperature and humidity measuring instrument 11 to collect the formaldehyde concentration value, temperature value and / or humidity value of the indoor air to obtain the first collection data and upload it to the control terminal 8. The control terminal 8 uses the maximum value or average value of the plurality of groups of first collection data as the indoor air quality data; Fig.10 As shown, the collection unit 7 is equipped with a carbon dioxide detector 12 and / or a second temperature and humidity measuring instrument 13 outdoors and close to the air inlet side of the air supply channel 2 to collect the carbon dioxide concentration value, temperature value and / or humidity value of the outdoor air to obtain the second collection data and upload it to the control terminal 8 as outdoor air quality data.

[0056] In the above, the preset standard values ​​of indoor or outdoor air quality data can be set with reference to the current ambient air index; such as summer air temperature is 22℃-28℃, summer air humidity is 40%-80%, winter air temperature is 18℃-24℃, winter air humidity is 30%-60%; air flow rate is 0.2-0.3m / s, PM2.5 concentration is lower than 75μg / m³, and formaldehyde concentration is lower than 0.08mg / m³.

[0057] In the above, if Figure 7 As shown, the pretreatment unit 4 includes a lampshade 14 and an ultraviolet light source 18. The lampshade 14 is a hollow porous base tube, which is arranged in the exhaust passage 3, and the two ends are respectively extended along the medium flow direction of the exhaust passage 3 and are detachably installed with a windshield 15, the outer periphery of the windshield 15 extends to connect with the inner wall of the exhaust passage 3, so as to form a flow passage 16 between the outer periphery of the lampshade 14 and the inner wall of the exhaust passage 3, and the windshield 15 is evenly provided with a plurality of flow holes 17 along the axial direction of the flow passage 16; the ultraviolet light source 18 is snap-fitted and installed in the lampshade 14, and the ultraviolet light source 18 emits ultraviolet light into the flow passage 16 through the holes on the outer periphery of the lampshade 14 to sterilize the indoor air passing through the flow holes 17, so as to complete the purification of the indoor air. Preferably, the flow passage 16 is an annular structure, so as to increase the effective contact area between the indoor air and the ultraviolet light, and improve the treatment effect.

[0058] Furthermore, if Figure 2As shown, the air inlet of the air supply channel 2 and the air outlet of the exhaust channel 3 are respectively provided with control valves 19, so that the air supply channel 2 and the exhaust channel 3 are closed when the fresh air system is not in use, so as to prevent indoor heat loss and the inflow of outdoor air; the control valve 19 is a one-way valve or a stop valve. In this embodiment, since the air supply channel 2 and the exhaust channel 3 are both provided with an air exchange unit 6, the control valve 19 can be a one-way valve, which can realize the self-sealing function of the channel on the basis of reducing energy consumption.

[0059] Furthermore, if Figure 2 As shown, the door and window frame 1 has a U-shaped cavity inside, and a sound-absorbing plate 20 with a microporous structure is installed in the U-shaped cavity, which can eliminate the noise generated during the air flow and the noise generated during the operation of the equipment; the sound-absorbing plate 20 divides the U-shaped cavity into adjacent air supply channels 2 and exhaust channels 3 along the U-shaped trajectory, so that the air inlet and air outlet of the air supply channel 2 and the air exhaust channel 3 are respectively designed on the opposite sides of the door and window frame 1, which can avoid interference with the air at the air inlet and air outlet during the flow process, so as to ensure better flow of indoor air and improve the ventilation effect; the sound-absorbing plate 20 located in the middle of the U-shaped cavity is a baffle structure, which can slow down the flow rate of air to further reduce the airflow noise, and improve the mixing effect of outdoor air and indoor air in the air supply channel 2, so as to better reduce the temperature difference.

[0060] Furthermore, the air exchange unit 6 is a capacitive brushless cross-flow fan, which can be detachably mounted on the door and window frame 1 for easy replacement; an activated carbon adsorption layer 21 is detachably provided on the air outlet side of the air exchange unit 6, which is convenient for adsorbing harmful gases in the air (such as formaldehyde, toluene, etc.) and then sending them into the room or discharging them outdoors, which can not only purify the indoor air, but also protect the atmospheric environment.

[0061] Furthermore, if Figure 3 and Figure 4As shown, the air outlet of the air supply channel 2 is detachably provided with a plurality of groups of air volume adjustment controls 22, and the air volume adjustment controls 22 include a cover plate 23, a fixing portion 24 and an adjustment component, one end of the cover plate 23 is covered on the air outlet of the air supply channel 2, and the other end is a magnetic conductor; the fixing portion 24 is detachably installed on the side of the cover plate 23 away from the air outlet of the air supply channel 2; the adjustment component is arranged between the cover plate 23 and the fixing portion 24, and the adjustment component includes a positioning rod 25, a plurality of groups of springs 26 and a first electromagnetic The two ends of the positioning rod 25 are respectively connected to the opposite surfaces of the cover plate 23 and the fixing part 24, and can be telescopically moved along its axial direction; specifically, the positioning rod 25 is a telescopic rod, one end of which is ball-hingedly connected to the cover plate 23, and the other end is fixedly connected to the fixing part 24; the two ends of each group of springs 26 are respectively fixedly installed between the opposite surfaces of the cover plate 23 and the fixing part 24; the first electromagnet 27 and the second electromagnet 28 are respectively fixedly installed on one side of the fixing part 24 close to the cover plate 23, and are connected to the control terminal 8.

[0062] In the above, the air volume adjustment control 22 has three adjustment gears, which are low wind gear, medium wind gear and high wind gear, wherein;

[0063] Low wind gear: The control terminal 8 controls the first electromagnet 27 and the second electromagnet 28 to be energized, and the magnetic force of the first electromagnet 27 is smaller than the magnetic force of the second electromagnet 28, so that the cover plate 23 is disengaged from the air outlet of the air supply channel 2 and tilted downward, thereby blocking part of the air when it flows through, and forming a vortex at the bottom of the cover plate 23 to slow down the air flow rate, so as to reduce the wind speed at the air outlet of the air supply channel 2;

[0064] Medium wind gear: the control terminal 8 controls the first electromagnet 27 and the second electromagnet 28 to be energized, and the magnetic force of the first electromagnet 27 is equal to the magnetic force of the second electromagnet 28, so that the cover plate 23 and the air outlet of the air supply channel 2 are disengaged and kept parallel, thereby dividing the air flowing into the air supply channel 2 into two parts, and sending one part of the air into the room to reduce the ventilation volume;

[0065] High wind speed: the control terminal 8 controls the first electromagnet 27 and the second electromagnet 28 to be energized, and the magnetic force of the first electromagnet 27 is greater than the magnetic force of the second electromagnet 28, so that the cover plate 23 is disengaged from the air outlet of the air supply channel 2 and tilted upward, thereby guiding the air when it flows through, so as to enhance the wind speed at the air outlet of the air supply channel 2.

[0066] In the above, the magnitude of the magnetic force of the electromagnet can be changed by changing the magnitude of the current passing through the electromagnet, such as setting a sliding rheostat in the access circuit of the electromagnet to change the magnitude of the current passing through the electromagnet in the circuit through the sliding rheostat. It should be noted that the current value passing through the electromagnet in the middle wind gear is less than the current value passing through the second electromagnet 28 in the low wind gear or less than the current value passing through the first electromagnet 27 in the high wind gear.

[0067] In this embodiment, in order to adjust the air humidity, an electric heating plate can be set at the air inlet of the air supply channel 2 and the exhaust channel 3 respectively to heat the incoming air and dehumidify the inside of the channel, and the temperature and humidity of the indoor air can be adjusted.

[0068] In this embodiment, if Figure 3 and Figure 5 As shown, in order to facilitate the replacement of the air volume adjustment control 22, the air exchange unit 6, the ultraviolet light source 18 and the activated carbon adsorption layer 21, installation openings 29 are respectively opened on the door and window frame 1 close to the indoor side and at both ends of the air supply channel 2 and the exhaust channel 3, and a mounting plate 30 is fixedly installed at the mounting opening 29 by means of screws or clip-on installation. The mounting plate 30 is a T-shaped structure, one end of which is inserted into the positioning grooves 31 located on the opposite sides of the mounting opening 29 to separate the air supply channel 2 and the exhaust channel 3; wherein the air volume adjustment control 22 is installed on the mounting plate 30 and is located on the air outlet side of the air supply channel 2; two sets of air exchange units 6 are respectively installed on opposite sides of the mounting plate 30 and are respectively located at the air inlet of the air supply channel 2 and the air inlet of the exhaust channel 3; as shown Figure 6 As shown, the activated carbon adsorption layer 21 is filled in a rectangular filter screen 32, and the filter screen 32 is arranged on the air outlet side of the air exchange unit 6 of the air supply channel 2, and is fixedly mounted on the mounting plate 30; the ultraviolet light source 18 is inserted into the lampshade 14 through the air inlet of the exhaust channel 3, and then is limitedly installed through the wind shield 15.

[0069] In the above, in order to reduce the layout of external lines, a battery compartment can be set on the outside of the mounting plate 30 to power the fresh air system through a number of batteries installed in the battery compartment; at the same time, the control terminal 8 can be set as an operating screen, so that the operating screen is embedded in the outer surface of the mounting plate 30 to reduce the layout of communication cables; the fresh air system can also be configured with a wireless / 4G / 5G / Bluetooth communication module to connect the control terminal 8 of the fresh air system to the user end, such as a mobile phone, remote control, etc. for remote control.

Claims

1. A fresh air system for intelligent doors and windows, the fresh air system comprising an air supply channel (2) and an air exhaust channel (3) arranged inside a door and window frame (1), the two ends of the air supply channel (2) and the air exhaust channel (3) respectively extending to connect indoors and outdoors, characterized in that: The fresh air system also includes: A pre-treatment unit (4) is arranged at the air inlet side of the exhaust passage (3); an electronic reversing valve (5) is arranged at the air outlet end of the pre-treatment unit (4); the electronic reversing valve (5) is used to switch the air outlet end of the pre-treatment unit (4) to an air outlet connected to the exhaust passage (3) or the air supply passage (2), so as to pass the purified indoor air into the exhaust passage (3) or the air supply passage (2); An air exchange unit (6) is arranged at the air inlet of the air supply channel (2) and the air inlet of the exhaust channel (3), and is used to send indoor air into the air inlet of the exhaust channel (3) and to send outdoor air into the air inlet of the air supply channel (2); when the air exchange unit (6) simultaneously sends indoor air and outdoor air into the air supply channel (2), air convection is formed to balance the temperature difference between the outdoor air output by the air supply channel (2) and the indoor air; the air exchange unit (6) is a capacitive brushless cross-flow fan, and the capacitive brushless cross-flow fan can be detachably mounted on the door and window frame (1); A collection unit (7), used for collecting indoor and / or outdoor air quality data; A control terminal (8) is used to receive the indoor and / or outdoor air quality data collected by the collection unit (7), and to control the electronic reversing valve (5) to connect the air outlet of the pre-processing unit (4) to the exhaust passage (3) or the air supply passage (2) according to a preset control rule, and to control the start and stop of the air exchange unit (6) and the pre-processing unit (4) to update the indoor air; The air outlet of the air supply channel (2) is detachably provided with a plurality of groups of air volume adjustment controls (22), and the air volume adjustment controls (22) include: A cover plate (23), one end of which is provided to cover the air outlet of the air supply channel (2), and the other end of which is a magnetic conductor; A fixing portion (24) detachably mounted on a side of the cover plate (23) away from an air outlet of the air supply channel (2); An adjustment component, disposed between the cover plate (23) and the fixing portion (24); Wherein, the adjustment component comprises: A positioning rod (25), the two ends of which are respectively connected to the opposite surfaces of the cover plate (23) and the fixing portion (24), and are telescopically movable along the axial direction thereof; A plurality of groups of springs (26), wherein two ends of each group of springs (26) are respectively mounted between opposite surfaces of the cover plate (23) and the fixing portion (24); and a first electromagnet (27) and a second electromagnet (28) arranged in sequence along the medium flow direction of the air supply channel (2), wherein the first electromagnet (27) and the second electromagnet (28) are respectively mounted on a side of the fixing portion (24) close to the cover plate (23), and are connected to the control terminal (8).

2. The fresh air system for intelligent doors and windows according to claim 1 is characterized in that: The preset control rules include: ① Ventilation mode: controlling the electronic reversing valve (5) to connect the air outlet of the pre-treatment unit (4) to the exhaust passage (3), and controlling the air exchange units (6) at the air inlets of the air supply passage (2) and the exhaust passage (3) to start simultaneously, so as to supply outdoor air and exhaust indoor air; ② Internal circulation ventilation mode: controlling the electronic reversing valve (5) to connect the air outlet of the pre-treatment unit (4) to the air supply channel (2), and controlling the pre-treatment unit (4) and the air exchange unit (6) located at the air inlet of the exhaust channel (3) to start simultaneously, so that the indoor air is passed into the air supply channel (2) after being purified and then flows back into the room; ③ Two-way flow circulation ventilation mode: the electronic reversing valve (5) is controlled to connect the air outlet of the pre-treatment unit (4) to the air supply channel (2), and the air exchange unit (6) at the air inlet of the pre-treatment unit (4) and the air supply channel (2) and the exhaust channel (3) is controlled to start simultaneously, so that the indoor air is passed into the air supply channel (2) after purification and mixed with the outdoor air to form air convection and transported to the room, so as to balance the temperature difference between the outdoor air output from the air supply channel (2) and the indoor air.

3. The fresh air system for intelligent doors and windows according to claim 2 is characterized in that: The control terminal (8) is equipped with a processor (9), and the processor (9) executes the preset control rule according to the preset logic rule, and the preset logic rule is: When the processor (9) receives indoor air quality data that is lower than a preset standard value, it selects any one of the ventilation mode, the internal circulation ventilation mode or the two-way flow circulation ventilation mode and updates the indoor air according to a single operation or alternating operation mechanism; When the processor (9) receives outdoor air quality data that is lower than a preset standard value, it selects the internal circulation ventilation mode to update the indoor air.

4. The fresh air system for intelligent doors and windows according to claim 1 is characterized in that: The pre-processing unit (4) comprises: The lampshade (14) is a hollow porous base tube, which is arranged in the exhaust passage (3), and has wind shields (15) at both ends extending along the medium flow direction of the exhaust passage (3) and detachably mounted thereon, wherein the outer periphery of the wind shield (15) extends to connect with the inner wall of the exhaust passage (3) so as to form a flow passage (16) between the outer periphery of the lampshade (14) and the inner wall of the exhaust passage (3), and the wind shield (15) is evenly provided with a plurality of flow holes (17) along the axial direction of the flow passage (16); An ultraviolet light source (18) is disposed in the lampshade (14), and the ultraviolet light source (18) emits ultraviolet light into the flow passage (16) through holes on the periphery of the lampshade (14) to sterilize the indoor air passing through the flow hole (17).

5. The fresh air system for intelligent doors and windows according to claim 1 is characterized in that: The air inlet of the air supply channel (2) and the air outlet of the air exhaust channel (3) are respectively provided with a control valve (19); The control valve (19) is a one-way valve or a stop valve.

6. The fresh air system for intelligent doors and windows according to claim 1, characterized in that: The door and window frame (1) has a U-shaped cavity inside, a sound-absorbing plate (20) with a microporous structure is installed in the U-shaped cavity, and the sound-absorbing plate (20) divides the U-shaped cavity into the adjacent air supply channel (2) and the air exhaust channel (3) along a U-shaped track; The silencer plate (20) located in the middle of the U-shaped cavity is a baffled structure.

7. The fresh air system for intelligent doors and windows according to claim 1, characterized in that: An activated carbon adsorption layer (21) is detachably provided on the air outlet side of the air exchange unit (6).

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