DE212017000172U1 - Bidirectional fresh air cleaner - Google Patents

Abstract

Bidirectional fresh air cleaner, characterized in that it comprises a housing (5), an external inlet opening (1), an external exhaust opening (2), an internal return air opening (3), an internal air inlet opening (4), a heat exchange core (9) and an electrical control box (6) wherein a height direction of the housing is defined upwards and downwards, a width direction is defined left and right, and a thickness direction is defined forward and backward, wherein the outer exhaust port and the outer air opening are respectively at a lower end and a rear end of the housing Inner Rückluftöffnung located at a right end, the inner air supply opening is located at an upper end of the housing, wherein the heat exchange core is in the center and at a right end of the housing and the electrical control box is located at the lower end of the housing, wherein the heat exchange core with a fresh air hole channel ( 91) and a return air hole channel (92), wherein the fresh air hole channel and the return air hole channel alternately overlap and the fresh air hole channel and the return air hole channel are not connected to each other, wherein an air channel connected to the fresh air hole channel is a fresh air channel and an air channel connected to the return air hole channel is a return air channel the fresh air passage is provided side by side with an outside air opening, a fresh air hole channel of the heat exchange core, a supply air guide plate (7), a supply air fan (10), a fresh air filter element (11) and an inside air supply port, the outside air port being connected to the fresh air hole channel of the heat exchange core , the fresh air passage of the heat exchange core is connected to the supply air guide plate, the supply air guide plate is connected to the supply air fan, the supply air fan with the fresh air filters relement is connected and the fresh air filter element is connected to the inner air supply opening; wherein the return air passage is provided side by side along a flow direction of the return air with an inner return air port, a return air filter element (12), a return air passage of the heat exchange core, a return air guide plate (8), a return air fan (13) and an outer exhaust port, the inner return air port being connected to the return air filter element, the return air filter element is connected to the return air hole passage of the heat exchange core, the return air hole channel of the heat exchange core is connected to the return air guide plate, the return air guide plate is connected to the return air fan, and the return air fan is connected to the outside exhaust port; wherein the supply air guide plate (7) has a supply air side guide plate (71); an air supply guide plate having an opening (72) and a guide slant plate of the air supply side (73), wherein one end of the guide slant of the supply air side sealingly with the G is connected to the housing and the other end is integrally connected to the Zuluftführungsblech, one end of the Führungsschrägplatte the air supply side is sealingly connected to the housing and the other end is integrally connected to the Zuluftführungshauptblech, wherein the Führungsschrägplatte the Zuluftseite and the Führungsschrägplatte the air supply side respectively are located at both ends of the Zuluftführungshauptblechs, wherein between the Führungsschrägplatte the Zuluftseite and the Zuluftführungshauptblech a first angle (α1) is present and between the Führungsschrägplatte the air supply side and the Zuluftführungshauptblech a second angle (a2) is present, wherein the first angle and the second angle both wherein the return air guide plate (8) includes a return air side guide plate (81) and a main return air guide plate having an opening (82), one end of the guide plate being the return air side e is sealingly connected to the housing and the other end is integrally connected to one end of the return air guide main plate and the other end of the return air guide main plate is sealingly connected to the housing, wherein between the guide slant plate of the return air side and the return air guide main plate, a third angle (a3) is present, is an obtuse angle, wherein the electrical control box (6) comprises a control circuit board (61) and an electrical component, wherein the electrical component is electrically connected to the control circuit board, and wherein the supply air fan (10) and the return air fan (13) each electrically connected to the control circuit board.

Description

Field of the invention

The present invention belongs to the technical field of air purification and ventilation and in particular relates to a bidirectional fresh air cleaner.

State of the art

The cleaner is designed to inject outside air into the room through dust removal, temperature adjustment and humidity adjustment, replace the dirty air in the room and maintain the circulation of indoor and outdoor air, thereby improving indoor air quality and providing the fresh air required for human health. The fresh air that passes through the system into the room can gradually replace the dirty air in the room, which improves the air quality in the room.

At present, some cleaners sold on the market have at least the following disadvantages: 1 , The structure is complicated, the arrangement is unreasonable and their use is impractical. 2 , They use the aluminum heat exchange core, after operation for some time producing the condensate water on the surface of the aluminum heat exchange core, which affects the work efficiency of the heat exchange core and even damages the heat exchange core, shortening the life of the bidirectional fresh air purifier. To solve this problem, a water guide groove is arranged on the heat exchange core, for discharging the condensed water. But this method not only increases costs, but also complicates the structure. 3 , The inside air inlet opening of some cleaners is not provided with a filter element, and the contaminant particles contained in the inside back air penetrate into the heat exchange core, which easily damages the heat exchange core and shortens the life of the cleaner. 4 , The wind speed of the fan is not concentrated and uneven, which affects the effect of the cleaner. 5 , The pressure loss of the fan is high and the electricity costs are high. 6 , The cleaner is running loud.

The Chinese utility model font CN 202452635 U discloses a new wall hung, warm fresh air exchanger which can hang on the wall and has the advantages of a small size, a beautiful appearance and a convenient installation. However, he does not solve the above technical problems.

Object of the invention

The main technical problem to be solved by the invention is to provide a bidirectional fresh air purifier which has a higher heat exchange rate and air purification rate, an exquisite structure design, a rational layout, a long life and a low cost. An air guide ring is added to the inlet of the fan in the cleaner, which reduces the pressure loss and reduces the noise.

In order to solve the above technical problem, the present invention proposes a technical solution in the form of a bidirectional fresh air cleaner comprising a housing, an outside air opening, an outside air opening, an inside return air opening, an inside air supply opening, a heat exchange core and an electric control box. A height direction of the housing is defined up and down, a width direction is defined left and right, and a thickness direction is defined front and rear. The outer exhaust port and the outer exhaust port are respectively located at a lower end and a rear end of the housing, the inner return air opening is located at a right end, the inner air supply opening is located at an upper end of the housing, the heat exchange core is located at the center and at a right end of the housing and the electrical control box is located at the bottom of the housing.

The heat exchange core is provided with a fresh air hole channel and a return air hole channel, wherein the fresh air hole channel and the return air hole channel overlap alternately, and the fresh air hole channel and the return air hole channel are not connected to each other.

An air channel connected to the fresh air hole channel is a fresh air channel, and an air channel connected to the return air hole channel is a return air channel, the fresh air channel being juxtaposed along a flow direction of the fresh air with an outside air opening, a fresh air hole channel of the heat exchange core, a supply air guide plate, a supply air fan, a fresh air filter element and an inside air supply port the outside air opening being connected to the fresh air hole channel of the heat exchange core, the fresh air hole channel of the heat exchange core being connected to the supply air guide plate, the supply air guide plate being connected to the supply air fan, the supply air fan being connected to the fresh air filter element and the fresh air filter element being connected to the inside air supply opening; wherein the supply air guide plate is connected to the supply air fan, the supply air fan is connected to the fresh air filter element, the fresh air filter element with the inner air supply opening connected is; wherein the return air passage along a flow direction of the return air side by side with an Innenrückluftöffnung, a Rückluftfilterelement, a return air duct of the heat exchange core, a return air guide plate, a return air fan and an external exhaust port is provided, wherein the Innenrückluftöffnung is connected to the Rückluftfilterelement, the return air filter element is connected to the Rückluftlochkanal the heat exchange core the return air passageway of the heat exchange core is connected to the return air guide plate, the return air guide plate is connected to the return air fan, and the return air fan is connected to the outside exhaust port.

The supply air guide plate includes a supply-side guide slant plate, an air supply guide plate with an opening, and an air supply-side guide slant plate, one end of the supply-side slant plate being sealingly connected to the housing and the other end integrally connected to the supply air guide plate, sealingly sealing one end of the air supply-side slant plate is connected to the housing and the other end is integrally connected to the Zuluftführungshauptblech, wherein the Führungsschrägplatte the Zuluftseite and the Führungsschrägplatte the air supply side are respectively located at both ends of the Zuluftführungshauptblechs, wherein between the Führungsschrägplatte the Zuluftseite and the Zuluftführungshauptblech a first angle is present between the guide inclined plate of the air supply side and the supply air main plate a second angle is present, wherein the first angle and the second angle both stump beinkel.

The return air guide plate includes a return air side guide plate and a return air guide main plate with an opening, one end of the return air side guide plate being sealingly connected to the housing and the other end integrally connected to one end of the return air guide main plate, the other end of the return air guide main plate sealingly connected to the housing wherein there is a third angle between the guide back plate of the return air side and the return air guide main plate, which is the obtuse angle.

The electrical control box includes a control circuit board and an electrical component, wherein the electrical component is electrically connected to the control circuit board; wherein the supply air fan and the return air fan are each electrically connected to the control circuit board.

Further, the heat exchange core may be formed of multiple layers of corrugated paper superimposed side by side from bottom to top, the wave direction of each two adjacent layers of corrugated paper being 90 °.

Further, the heat exchange core is detachably connected to the housing.

Further, the surface of the heat exchange core is secured with a towelette strip.

Further, the heat exchange core and the return air fan are arranged horizontally next to each other.

Further, the supply air fan and the return air fan are both high, medium and low flow outgoing air fans.

Furthermore, a first air guide ring can be arranged between the supply air fan and the supply air guide plate, wherein the supply air side of the first air guide ring is adapted to the opening of the Zuluftführungshauptblechs and the air outlet side of the first air guide ring is adapted to the input terminal of the supply air fan.

The fresh air flows in succession through the outside air opening, the fresh air hole channel of the heat exchange core, the feed air side guide plate of the supply air guide plate, the main air supply guide plate, the first air guide ring, the supply air fan, the air supply side guide plate, the fresh air filter element, and the inside air supply port.

Further, a second air guide ring may be disposed between the return air fan and the return air guide plate, wherein the Zuluftseite the second air guide ring is adapted to the opening of the Rückluftführungshauptblechs and the air outlet side of the second air guide ring is adapted to the input terminal of the return air fan.

The return air flows successively through the inner return air opening, the return air filter element, the return air hole passage of the heat exchange core, the return air side guide slant plate of the return air guide plate, the return air guide main plate, the second air guide ring, the return air fan, and the outer exhaust hole.

Furthermore, the first air guide ring and the second air guide ring are structurally identical air guide rings.

Furthermore, the fresh air filter element may comprise a first filter layer and a second filter layer, wherein the first filter layer is arranged upstream of the second filter layer, wherein the first filter layer is a Activated carbon filter cotton layer and the activated carbon filter cotton layer has a thickness of 0.5 cm to 1.5 cm and the second filter layer is a HEPA filter layer and the HEPA filter layer has a thickness of 3 cm - 5 cm.

Further, the return air filter element may be an activated carbon filter layer and the return air filter element may have a thickness of 0.5 cm to 1.5 cm.

Further, the activated carbon filter layer is a honeycomb filter net of activated carbon plastic.

Further, the left and right ends of the fresh air filter element are each provided with a buffer sponge.

Further, both the fresh air filter element and the return air filter element are detachably connected to the housing.

Furthermore, the lower part of the side wall of the housing may be provided with a monitoring hole, wherein a PM2.5 sensor and a CO ₂ sensor are arranged on the monitoring hole and within the housing.

Furthermore, a suppression cap is provided outside of the PM2.5 sensor and the CO ₂ sensor, which does not affect the flow of air near the sensor. In order to facilitate the internal air in and out of the vicinity of the sensor, an air hole is provided on the bottom surface of the housing, so that an air pressure in the vicinity of the sensor remains consistent with an atmospheric pressure.

Further, the PM2.5 sensor and the CO ₂ sensor are both below the return air fan.

Further, the housing may be provided with a door panel provided with a touch screen, wherein one side of the door panel is hinge-connected to the housing by inner hinge, and between the other side of the door panel and the housing is provided a magnetic proximity switch or a pressure switch.

Further, a magnetic proximity switch is disposed between the other side of the door panel and the housing, wherein when the door panel is engaged with the housing, the magnetic proximity switch is turned on and a working circuit of the cleaner is turned on. and if the door panel is separated from the housing, the magnetic proximity switch is turned off and the cleaner's workgroup is broken.

Furthermore, the first angle may be 100 ° to 135 °, the second angle may be 100 ° to 135 °, and the third angle may be 100 ° to 135 °.

Further, the touch screen may include a display screen and an operation button, wherein the display screen and the operation button are electrically connected to the control circuit board, respectively.

Further, the operation button includes an ON / OFF button, a FAN button, a MODE button, a SLEEP button, a UP button and a DOWN button, wherein the ON / OFF button, the FAN button, the MODE key, the SLEEP key, the UP key, and the DOWN key are each electrically connected to the control circuit board.

• ON/OFF-Taste:Netzschalter, zum Einschalten oder Ausschalten der Steuerschaltung des Reinigers;
• FAN-Taste: zum Einstellen des hohen, mittleren und niedrigen Gangs von Zuluftventilator und Rückluftventilator;
• MODE-Taste:zum Einstellen eines automatischen Steuerungsmodus und eines manuellen Steuerungsmodus; wobei beim automatischen Steuerungsmodus die Steuerschaltungsplatte des Reinigers gemäß durch PM2,5-Sensor und CO₂-Sensor rückgemeldeten Werten eine Windgeschwindigkeit des Zuluftventilators und des Rückluftventilators automatisch steuert; wenn der Wert des PM2,5-Sensors und des CO₂-Sensors höher als der Soll- Wert ist, der Zuluftventilator und der Rückluftventilator auf den hohen
• Gang eingestellt werden; wenn der Wert des PM2,5-Sensors und des CO₂-Sensors niedriger als der Soll- Wert ist, der Zuluftventilator und der Rückluftventilator auf den mittleren oder niedrigen Gang eingestellt werden;
• SLEEP-Taste:Schlafmodus, zum automatischen Einstellen der Windgeschwindigkeit des Zuluftventilators und des Rückluftventilators auf den niedrigen Gang.
• UP-Taste und DOWN-Taste:Einstellknopf nach oben und unten , zum Einstellen der Wertanzeige des PM2,5-Sensors oder des CO₂-Sensors; oder zum Einstellen des Einstellparameters.

Furthermore, the control key is controlled by:

• ON / OFF button: power switch, to turn on or off the control circuit of the cleaner;
• FAN button: to set the high, medium and low gears of supply fan and return air fan;
• MODE button: to set an automatic control mode and a manual control mode; wherein in the automatic control mode, the control circuit board of the cleaner automatically controls a wind speed of the supply air fan and the return air fan according to values confirmed by the PM2.5 sensor and the CO ₂ sensor; if the value of the PM2.5 sensor and the CO ₂ sensor is higher than the setpoint value, the supply air fan and the return air fan are set to high
• Gear to be adjusted; if the value of the PM2.5 sensor and the CO ₂ sensor is lower than the target value, the air supply fan and the return air fan are set to the medium or low speed;
• SLEEP button: Sleep mode, for automatically setting the wind speed of the supply air fan and the return air fan to the low gear.
• UP button and DOWN button: Adjustment button up and down, to set the value display of the PM2.5 sensor or the CO ₂ sensor; or to set the adjustment parameter.

Further, the inner return air opening and the inner air supply opening are both arranged in a lattice shape.

Further, the rear end and the upper end of the housing are provided with a suspension foot through which the cleaner hangs on the wall.

Furthermore, the supply air fan is located above the heat exchange core and the return air fan.

Further, the electrical control box is located below the heat exchange core and the return air fan.

Further, the electrical component comprises a transformer and a plurality of capacitors, wherein the transformer and all of the capacitors are electrically connected to the control circuit board.

Furthermore, the housing, the electrical control box and the Entstörkappe all made of steel material.

1. 1. Der Reiniger in der vorliegenden Erfindung ist mit einem Wärmeaustauschkern versehen, die Außenfrischluft und die Innenrückluft werden gefiltert und gereinigt und passieren den Wärmeaustauschkern, so dass die Außenfrischluft im Wärmeaustauschkern die Energie der Innenrückluft wiedergewinnt, wodurch die Wirkungen sowohl der Lüftung und als auch der Haltung der Temperatur- und Feuchtigkeitsstabilität im Innen erreicht werden; wenn der Frischluftreiniger, der mit dem Wärmeaustauschkern ausgestattet ist, während der Sommerkühlperiode betrieben wird, erhält die Außenfrischluft die kalte Menge von der Innenrückluft, so dass die Temperatur gesenkt wird und zugleich von Innenrückluft getrocknet wird, wodurch die Außenfrischluftfeuchtigkeit gesenkt wird; während des Winterbetriebs erhält die Außenfrischluft die Wärme von der Innenrückluft, so dass die Temperatur ansteigt und zugleich von Innenrückluft angefeuchtet wird; zugleich ist an der Außenzuluftöffnung ein auswechselbares Frischluftfilterelement angeordnet, das verschiedene Schadstoffe in der Außenluft effektiv entfernen kann, so dass der Reiniger bei Anwesenheit von Außenluftverschmutzung saubere und mit Sauerstoff angereicherte Luft bereitstellen und die Anwendbarkeit des bidirektionalen Frischluftreinigers verbessern kann; und an der Innenrückluftöffnung ist ein auswechselbares Rückluftfilterelement angeordnet, um zu verhindern, dass die verschmutzte Innenluft in den Wärmeaustauschkern eindringt, um das Innere des Reinigers sauber zu bleiben, und um die Lebensdauer dieser Maschine zu verlängern, wobei die Wartung einfach ist;
2. 2. in der vorliegenden Erfindung sind ein Zuluftführungsblech, ein Rückluftführungsblech und ein erster Luftführungsring und ein zweiter Luftführungsring jeweils am Zuluftventilator und am Rückluftventilator hinzugefügt, die Innenfrischluft und die Innenrückluft passieren jeweils das Zuluftführungsblech, Rückluftführungsblech und den ersten Luftführungsring, zweiten Luftführungsring und danach dringen in den Zuluftventilator, Rückluftventilator. Die Ausgangsgeschwindigkeit des Zuluftventilators und des Rückluftventilators ist konzentriert und gleichmäßig, der Druckverlust ist gering und das Reinigungsgeräusch ist gering; zwischen Luftzufuhrführungshauptblech und Führungsschrägplatte der Zuluftseite des ersten Führungsblechs, Führungsschrägplatte der Luftzufuhrseite sind jeweils ein erster Winkel, ein zweiter Winkel vorhanden, zwischen Führungsschrägplatte der Rückluftseite des zweiten Führungsblechs und Rückluftführungshauptblech ist ein dritter Winkel vorhanden, wobei der erste, zweite und dritte Winkel vorzugsweise 110 °beträgt. Zu dieser Zeit können die Innenfrischluft und die Innenrückluft beide entlang des Zuluftführungsblechs, des Rückluftführungsblechs stabil eingegeben werden, um den Druckverlust und das Geräusche zu reduzieren;
3. 3. die Erfindung ist mit einer Türplatte versehen, wobei eine Seite der Türplatte mit dem Gehäuse gelenkverbunden ist, so dass die Türplatte durch Innenscharnier eng mit dem Gehäuse verbunden ist, wobei die Dichtungseigenschaft des Gehäuses gut ist; zwischen der anderen Seite der Türplatte und dem Gehäuse ist ein magnetischer Näherungsschalter angeordnet, wobei, wenn beim Verwenden des Reinigers die Türplatte in Eingriff mit dem Gehäuse steht, der magnetische Näherungsschalter eingeschaltet wird und der Arbeitskreis des Reinigers eingeschaltet wird; wenn beim Reiniger der neue Wärmeaustauschkern und das Filterelement ausgetauscht werden müssen, die Türplatte vom Gehäuse getrennt wird und der magnetische Näherungsschalter ausgeschaltet wird, wobei die Nutzungssicherheit gut ist;
4. 4. in der vorliegenden Erfindung umfasst das Frischluftfilterelement eine HEPA-Filterschicht und eine Aktivkohlefilterbaumwollschicht, wobei die HEPA-Filterschicht eine Entfernungseffizienz von mehr als 99,97% für Partikel mit Durchmesser von 0,3 µm oder weniger hat und die Aktivkohlefilterbaumwollschicht eine Aluminiumwabe, Kunststoffwabe, eine Papierwabe und dergleichen mit einer Durchgangslochstruktur als Träger verwendet; verglichen mit dem herkömmlichen Aktivkohlefilternetz weist das Frischluftfilterelement eine bessere aerodynamische Leistung, geringe Schüttdichte, große spezifische Oberfläche, hohe Adsorptionseffizienz und niedrigen Luftwiderstandsbeiwert auf, zur Behandlung von Benzol, Phenolen, Estern, Alkoholen und Aldehyden und anderer organischen Gase, sowie stinkender Gase und verschiedener Gase, die Spuren von Schwermetallen enthalten, und die direkte Emission kann nach der Reinigung durchgeführt werden.Die vorliegende Erfindung kombiniert die HEPA-Filterschicht mit der Aktivkohlefilterbaumwollschicht für eine bessere Filtration; das Rückluftfilterelement verwendet das Wabenfilternetz aus Aktivkohlekunststoff, das geringe Schüttdichte, große spezifische Oberfläche, hohe Adsorptionseffizienz, geringen Luftwiderstandsbeiwert aufweist, um die Absorption organischer Gase und stinkender Gase wie Benzol, Phenole, Ester, Alkohole, Aldehyde in der Innenraumluft durchzuführen, wobei die Innenreinigung des Reinigers beibehalten wird und zugleich die direkte Abgabe von Abgas in die Luft und der Umweltschäden vermieden werden;
5. 5. Ferner ist der durch die vorliegende Erfindung verwendete Wärmeaustauschkern aus mehreren Schichten von Wellenpapieren gebildet, die sich von unten nach oben nebeneinander überlagern, wobei die Wellenrichtung jeder benachbarten zwei Schichten von Wellenpapieren 90 °beträgt, um sicherzustellen, dass der Frischluftlochkanal und der Frischluftlochkanal nicht miteinander verbunden sind, und um die in den Innenraum eindringende Frischluftqualität nicht beeinflussen, wobei die Reinigungswirkung gut ist; der Wärmeaustauschkern verwendet das Wellpapier, das während des Arbeitsprozesses kein Kondenswasser erzeugt und damit nicht den Betrieb der Maschine beeinträchtigt, wodurch die Lebensdauer der Maschine verlängert wird und die Kosten spart werden;
6. 6. in der Erfindung sind ein PM2,5-Sensor und ein CO₂-Sensor innerhalb des Gehäuses angeordnet, und entsprechende Überwachungslöcher sind an dem Gehäuse angeordnet, um die durch das Überwachungsloch strömende Innenluft direkt zu überwachen, und die Überwachungsdaten des PM2,5-Sensors und des CO₂-Sensors sind genauer und die Parameter,auf den die automatische Steuerung des Reinigers beruht, sind vernünftiger; Um die Innenluft in die Nähe des Sensors zu erleichtern, ist ein Luftloch an Bodenfläche des Gehäuses vorgesehen, so dass ein Luftdruck in der Nähe des Sensors mit einem Atmosphärendruck in Einklang bleibt, wobei die Konstruktion vernünftig ist und die Überwachung genau ist; zugleich ist eine Entstörkappe außerhalb des PM2,5-Sensors und des CO₂-Sensors vorgesehen, die den Luftstrom in die Nähe des Sensors nicht beeinflusst, so dass die durch PM2,5-Sensor und des CO₂-Sensor überwachte Luft vollständig Innenluft ist und nicht von Außenfrischluft beeinflusst wird, wobei die Überwachungswerte genau sind;
7. 7. in der vorliegenden Erfindung umfasst die Bedientaste auf dem Touchscreen eine ON/OFF-Taste, eine FAN-Taste, eine MODE-Taste, eine SLEEP-Taste, eine UP-Taste und eine DOWN-Taste, wobei die SLEEP-Taste die Funktionen zur automatischen Windgeschwindigkeitsanpassung des Zuluftventilators und des Rückluftventilators auf einen niedrigen Gang aufweist, wobei die Einstellung benutzerfreundlich ist und die Konstruktion vernünftig ist; wobei die MODE-Taste zum Einstellen eines automatischen Steuerungsmodus und eines manuellen Steuerungsmodus dient; wobei beim automatischen Steuerungsmodus die Steuerschaltungsplatte des Reinigers gemäß durch PM2,5-Sensor und CO₂-Sensor rückgemeldeten Werten eine Windgeschwindigkeit des Zuluftventilators und des Rückluftventilators automatisch steuert; wenn der Wert des PM2,5-Sensors und des CO₂-Sensors höher als der Soll- Wert ist, der Zuluftventilator und der Rückluftventilator auf den hohen Gang eingestellt werden; wenn der Wert des PM2,5-Sensors und des CO₂-Sensors niedriger als der Soll- Wert ist, der Zuluftventilator und der Rückluftventilator auf den mittleren oder niedrigen Gang eingestellt werden; wobei das Automatisierungsgrad hoch ist und die Konstruktion vernünftig ist.
8. 8. in der vorliegenden Erfindung bestehen das Gehäuse, der elektrische Steuerkasten und die Entstörkappe alle aus Stahlmaterial, verglichen mit dem Kunststoffmaterial ist die Maschine stabiler und nicht leicht zu beschädigen, wodurch Wartungs- und Wartungskosten eingespart werden;
9. 9. in der vorliegenden Erfindung sind das Frischluftfilterelement, das Rückluftfilterelement und der Wärmeaustauschkern alle so ausgelegt, dass sie zum einfachen Austausch und Warten lösbar mit dem Gehäuse verbunden sind; wobei der Wärmeaustauschkern mit einem Hebetuchstreifen zum leichten Ausnehmen versehen ist.

The advantageous effects of the present invention have at least the following points:

1. 1. The cleaner in the present invention is provided with a heat exchange core, the outside fresh air and the inside return air are filtered and cleaned, and pass through the heat exchange core so that the outside fresh air in the heat exchange core recovers the energy of the inside return air, thereby reducing the effects of both the ventilation and the Attitude of temperature and humidity stability can be achieved inside; when the fresh air cleaner equipped with the heat exchange core is operated during the summer cooling period, the outside fresh air receives the cold amount of the inside return air, so that the temperature is lowered and at the same time dried by internal back air, whereby the outside fresh air humidity is lowered; during winter operation, the outside fresh air receives the heat from the internal return air, so that the temperature rises and at the same time moistened by internal return air; at the same time, a replaceable fresh air filter element is disposed on the outside air opening, which can effectively remove various pollutants in the outside air, so that the cleaner can provide clean and oxygen-enriched air in the presence of outside air pollution and improve the applicability of the bidirectional fresh air cleaner; and at the inner return air opening, there is disposed a replaceable return air filter element for preventing the dirty indoor air from entering the heat exchange core to keep the inside of the cleaner clean, and for extending the life of this machine, maintenance being easy;
2. 2. in the present invention, a Zuluftführungsblech, a return air guide plate and a first air guide ring and a second air guide ring are added to the Zuluftventilator and the return air fan, the fresh air inside and the Innenrückluft pass each Zuluftführungsblech, return air guide plate and the first air guide ring, second air guide ring and then penetrate the supply air fan, return air fan. The output speed of the supply air fan and the return air fan is concentrated and uniform, the pressure loss is low and the cleaning noise is low; between the main air supply guide plate and the guide oblique plate of the supply air side of the first guide plate, guide oblique plate of the air supply side are each a first angle, a second angle present, between Führungsschrägplatte the return air side of the second guide plate and return air duct main plate is a third angle, wherein the first, second and third angle preferably 110 ° is. At this time, the inside fresh air and the inside return air can both be stably inputted along the supply air guide plate, the return air guide plate to reduce the pressure loss and the noise;
3. 3. The invention is provided with a door panel, wherein one side of the door panel is hinge-connected to the housing, so that the door panel is closely connected by inner hinge with the housing, wherein the sealing property of the housing is good; a magnetic proximity switch is disposed between the other side of the door panel and the housing, wherein, when using the cleaner, the door panel is engaged with the housing, the magnetic proximity switch is turned on and the cleaner's work circuit is turned on; if in the cleaner the new heat exchange core and the filter element must be replaced, the door panel is separated from the housing and the magnetic proximity switch is turned off, the safety in use is good;
4. 4. In the present invention, the fresh air filter element comprises a HEPA filter layer and an activated carbon filter cotton layer, wherein the HEPA filter layer has a removal efficiency of more than 99.97% for particles of diameter of 0.3 μm or less and the activated carbon filter cotton layer has an aluminum honeycomb, plastic honeycomb a paper honeycomb and the like having a through-hole structure used as a carrier; Compared with the conventional activated carbon filter net, the fresh air filter element has better aerodynamic performance, low bulk density, high specific surface area, high adsorption efficiency and low drag coefficient for treating benzene, phenols, esters, alcohols and aldehydes and other organic gases, as well as stinking gases and various gases , which contain traces of heavy metals, and the direct emission can be carried out after cleaning present invention combines the HEPA filter layer with the activated carbon filter cotton layer for better filtration; The return air filter element utilizes the honeycomb filter net of activated carbon plastic which has low bulk density, high specific surface area, high adsorption efficiency, low coefficient of drag to carry out the absorption of organic gases and fouling gases such as benzene, phenols, esters, alcohols, aldehydes in the indoor air Cleaner while avoiding the direct release of exhaust gas into the air and environmental damage;
5. 5. Further, the heat exchange core used by the present invention is formed of a plurality of layers of corrugated papers superimposed side by side from bottom to top with the wave direction of each adjacent two layers of corrugated paper being 90 ° to ensure that the fresh air hole channel and the fresh air hole channel do not connected to each other, and do not affect the penetrating into the interior fresh air quality, the cleaning effect is good; the heat exchange core uses the corrugated paper, which does not generate condensation during the working process and thus does not affect the operation of the machine, thereby extending the life of the machine and saving costs;
6. 6. In the invention, a PM2.5 sensor and a CO ₂ sensor are arranged inside the housing, and corresponding monitoring holes are arranged on the housing to directly monitor the inside air flowing through the monitoring hole, and the monitoring data of PM2.5 Sensors and the CO ₂ sensor are more accurate and the parameters on which the automatic control of the cleaner is based are more reasonable; In order to facilitate the internal air in the vicinity of the sensor, an air hole is provided on the bottom surface of the housing, so that an air pressure in the vicinity of the sensor with an atmospheric pressure is consistent, the construction is reasonable and the monitoring is accurate; at the same time a Entstörkappe outside the PM2.5 sensor and the CO ₂ sensor is provided, which does not affect the airflow in the vicinity of the sensor, so that the through PM2.5 sensor and the CO ₂ sensor monitored air is completely inside air and is not affected by fresh outdoor air, the monitoring values being accurate;
7. 7. In the present invention, the operation button on the touch screen includes an ON / OFF button, a FAN button, a MODE button, a SLEEP button, a UP button and a DOWN button, the SLEEP button Features automatic wind speed adjustment of the supply air fan and the return air fan to a low gear, the adjustment being user friendly and the construction reasonable; wherein the MODE key is for setting an automatic control mode and a manual control mode; wherein in the automatic control mode, the control circuit board of the cleaner automatically controls a wind speed of the supply air fan and the return air fan according to values confirmed by the PM2.5 sensor and the CO ₂ sensor; if the value of the PM2.5 sensor and the CO ₂ sensor is higher than the target value, the air supply fan and the return air fan are set to the high gear; if the value of the PM2.5 sensor and the CO ₂ sensor is lower than the target value, the air supply fan and the return air fan are set to the medium or low speed; where the level of automation is high and the design is reasonable.
8. 8. in the present invention, the housing, the electrical control box and the Entstörkappe are all made of steel material, compared to the plastic material, the machine is more stable and not easy to damage, whereby maintenance and maintenance costs are saved;
9. 9. In the present invention, the fresh air filter element, the return air filter element and the heat exchange core are all designed to be detachably connected to the housing for easy replacement and maintenance; wherein the heat exchange core is provided with a sling strip for easy removal.

list of figures

• 1 shows a first schematic structural representation of the present invention, 2 shows a schematic structural representation of an internal return air opening of the present invention,
• 3 shows a second schematic structural representation of the present invention,
• 4 shows a first schematic inner structure representation of the present invention,
• 5 shows a second schematic inner structure representation of the present invention,
• 6 shows a schematic structural representation of a Zuluftführungsblechs the present invention,
• 7 shows a schematic structural representation of a return air guide plate of the present invention,
• 8th shows a schematic combination structure representation of a Zuluftführungsblechs, a first air guide ring and a supply air fan of the present invention,
• 9 FIG. 12 is a schematic combination structural diagram of a return air guide plate, a second air guide ring, and a return air fan of the present invention; FIG.
• 10 shows a schematic structural representation of a first air guide ring of the present invention,
• 11 shows a schematic structural representation of a heat exchange core of the present invention and
• 12 shows a control principle representation of the present invention.

The accompanying drawings include the following reference numerals:

Außenzuluftöffnung 1 , External exhaust opening 2 , Inner rear opening 3 , Inside air supply opening 4 , Casing 5 , electrical control box 6 , Control circuit board 61 , Transformer 62 , Capacitor 63 , Supply air guide plate 7 , Guide oblique plate of the supply air side 71 , Main supply air duct 72 , Guide plate of the air supply side 73 , Return air guide plate 8th , Guide plate of the return air side 81 , Return air duct main plate 82 , Heat exchange core 9 , Fresh air hole channel 91 , Return air hole channel 92 , Toweling strips 93 , Supply air fan 10 , Fresh air filter element 11 , Return air filter element 12 , Return air fan 13 , Supply air fan 10 , Return air fan 13 , first air guide ring 14 , second air guide ring 15 , PM2.5 sensor 16 , CO ₂ sensor 17 , Suppressor cap 18 , Touchscreen 19 , Display screen 20 , Control button 21 , Door panel 22 , Air hole 23 , Surveillance hole 24 , magnetic proximity switch 25 , first angle α1 , second angle α2 and third angle α3 ,

Description of the preferred embodiments

The preferred embodiment of the present invention will be explained in more detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention may be more readily understood by those skilled in the art to more clearly define the scope of the present invention.

Exemplary Embodiment: A bidirectional fresh-air cleaner comprises, as in FIGS 1-12 shown a case 5 , an external inlet 1 , an external exhaust port 2 , an interior return air opening 3 , an inside air supply opening 4 , a heat exchange core 9 and an electrical control box 6 wherein a height direction of the housing is defined up and down, a width direction is defined left and right and a thickness direction is defined front and rear, wherein the outer exhaust port and the outer inlet opening are respectively at a lower end and a rear end of the housing, the Innenrückluftöffnung on located at a right end, the inner air supply opening is located at an upper end of the housing, the heat exchange core is in the middle and at a right end of the housing and the electrical control box is located at the lower end of the housing;
the heat exchange core is with a fresh air hole channel 91 and a return air hole channel 92 provided, wherein the fresh air hole channel and the return air hole channel overlap alternately, and the fresh air hole channel and the return air hole channel are not connected to each other;
wherein an air channel connected to the fresh air hole channel is a fresh air channel, and an air channel connected to the return air hole channel is a return air channel, the fresh air channel being juxtaposed with an outside air opening, a fresh air hole channel of the heat exchange core, a fresh air guide plate along a flow direction of the fresh air 7 , a supply air fan 10 , a fresh air filter element 11 and an inside air supply opening, wherein the outside air opening is connected to the fresh air hole channel of the heat exchange core, the fresh air hole channel of the heat exchange core is connected to the supply air guide plate, the supply air guide plate is connected to the supply air fan, the supply air fan is connected to the fresh air filter element and the fresh air filter element is connected to the inside air supply opening ;
wherein the return air passage along a flow direction of the return air side by side with an inner return air opening, a return air filter element 12 , a return air passage of the heat exchange core, a return air guide plate 8th , a return air fan 13 and an outside exhaust port, wherein the inside return air port is connected to the return air filter element, the return air filter element is connected to the return air hole channel of the heat exchange core, the return air hole passage of the heat exchange core is connected to the return air guide plate, the return air guide plate is connected to the return air fan, and the return air fan is connected to the outside exhaust port ;
wherein the supply air guide plate 7 a Führungsschrägplatte the supply side 71 , a supply air guide plate with opening 72 and a guide plate of the air supply side 73 includes, wherein one end of the guide plate of the Zuluftseite sealingly connected to the housing and the other end is integrally connected to the supply air guide plate, one end of the air intake side guide plate is sealingly connected to the housing, and the other end is integrally connected to the main air supply main plate, the supply air side guide plate and the air supply side guide plate being respectively at both ends the Zuluftführungshauptblechs are, wherein between the Führungsschrägplatte the supply side and the supply air main plate a first angle α1 is present, between the Führungsschrägplatte the air supply side and the supply air guide main plate, a second angle α2 is present, wherein the first angle and the second angle are both stub angle;
the return air guide plate 8th a Führungsschrägplatte the return air side 81 and a return air guide main plate with opening 82 wherein one end of the return air side guide plate is sealingly connected to the housing and the other end is integrally connected to one end of the return air guide main plate, the other end of the return air guide main plate is sealingly connected to the housing, between the return air side guide plate and the main return air guide plate third angle a3 is present, which is dull angle;
the electrical control box 6 a control circuit board 61 and an electrical component, wherein the electrical component is electrically connected to the control circuit board; where the supply air fan 10 and the return air fan 13 each electrically connected to the control circuit board.

The heat exchange core 9 is formed of several layers of wave papers superimposed side by side from bottom to top, with the wave direction of each adjacent two layers of wave papers being 90 °.

The heat exchange core is detachably connected to the housing.

The surface of the heat exchange core is secured with a sling strip.

The heat exchange core and the return air fan are arranged horizontally next to each other.

The supply air fan and the return air fan are both outgoing air fans with high, medium and low gear.

A first air guide ring 14 is disposed between the supply air fan and the supply air guide plate, wherein the supply air side of the first air guide ring is adapted to the opening of the Zuluftführungshauptblechs and the air outlet side of the first air guide ring is adapted to input terminal of the supply air fan;
the fresh air flows in succession through the outside air opening, the fresh air hole channel of the heat exchange core, the supply air side guide air intake plate, the main air supply guide plate, the first air guide ring, the supply air fan, the air intake side guide slant plate, the fresh air filter element, and the inside air supply port.

A second air guide ring 15 is disposed between the return air fan and the return air guide plate, wherein the supply air side of the second air guide ring is adapted to the opening of the return air guide main plate and the air outlet side of the second air guide ring is adapted to input terminal of the return air fan;
the return air flows successively through the inner return air opening, the return air filter element, the return air hole passage of the heat exchange core, the return air side guide slant plate of the return air guide plate, the return air guide main plate, the second air guide ring, the return air fan, and the outer exhaust port.

The first air guide ring and the second air guide ring are structurally identical air guide ring.

The fresh air filter element 11 comprises a first filter layer and a second filter layer, wherein the first filter layer is disposed upstream of the second filter layer, the first filter layer being an activated carbon filter cotton layer and the activated carbon filter cotton layer having a thickness of 0.5 to 1.5 cm; and the second filter layer is a HEPA (dry effective air filter) filter layer and the HEPA filter layer has a thickness of 3-5 cm.

In this embodiment, the activated carbon filter cotton layer preferably has a thickness of 1 cm and the HEPA filter layer has a thickness of 4 cm.

The return air filter element 12 is an activated carbon filter layer and the return air filter element has a thickness of 0.5 to 1.5 cm.

In this embodiment, the activated carbon filter layer is preferably a honeycomb filter net of activated carbon plastic.

The left and right ends of the fresh air filter element are each provided with a buffer sponge.

Both the fresh air filter element and the return air filter element are detachably connected to the housing.

The lower part of the side wall of the housing is with a monitoring hole 24 provided at the surveillance hole and within the housing a PM2.5 sensor 16 and a CO ₂ sensor 17 are arranged.

A suppressor cap 18 ₂ is provided outside the sensor PM2.5 sensor and the CO that does not affect the airflow in the vicinity of the sensor. To facilitate the internal air in and out of the sensor is an air hole 23 provided on the bottom surface of the housing, so that an air pressure in the vicinity of the sensor with an atmospheric pressure is consistent.

The PM2.5 sensor and the CO ₂ sensor are both located below the return air fan.

The housing is further provided with a door panel 22 provided with a touch screen 19 is provided, wherein one side of the door panel is hinged by inner hinge to the housing, and between the other side of the door panel and the housing, a magnetic proximity switch or a pressure switch is provided.

In this embodiment, a magnetic proximity switch is preferably disposed between the other side of the door panel and the housing, wherein when the door panel is engaged with the housing, the magnetic proximity switch is turned on and a working circuit of the cleaner is turned on; if the door panel is separated from the housing, the magnetic proximity switch is switched off and the working group of the cleaner is interrupted.

In this embodiment, the first angle is preferably 110 °, the second angle is 110 ° and the third angle is 110 °.

The touch screen includes a display screen 20 and a control button 21 wherein the display screen and the operation button are each electrically connected to the control circuit board.

The control key includes an ON / OFF key, a FAN key, a MODE key, a SLEEP key, a UP key, and a DOWN key, with the ON / OFF key, the FAN key, the MODE Button, the SLEEP button, the UP button and the DOWN button are each electrically connected to the control circuit board.

• ON/OFF-Taste:Netzschalter, zum Einschalten oder Ausschalten der Steuerschaltung des Reinigers;
• FAN-Taste: zum Einstellen des hohen, mittleren und niedrigen Gangs von Zuluftventilator und Rückluftventilator;
• MODE-Taste:zum Einstellen eines automatischen Steuerungsmodus und eines manuellen Steuerungsmodus; wobei beim automatischen Steuerungsmodus die Steuerschaltungsplatte des Reinigers gemäß durch PM2,5-Sensor und CO₂-Sensor rückgemeldeten Werten eine Windgeschwindigkeit des Zuluftventilators und des Rückluftventilators automatisch steuert; wenn der Wert des PM2,5-Sensors und des CO₂-Sensors höher als der Soll- Wert ist, der Zuluftventilator und der Rückluftventilator auf den hohen
• Gang eingestellt werden; wenn der Wert des PM2,5-Sensors und des CO₂-Sensors niedriger als der Soll- Wert ist, der Zuluftventilator und der Rückluftventilator auf den mittleren oder niedrigen Gang eingestellt werden;
• SLEEP-Taste:Schlafmodus, zum automatischen Einstellen der Windgeschwindigkeit des Zuluftventilators und des Rückluftventilators auf den niedrigen Gang;
• UP-Taste und DOWN-Taste:Einstellknopf nach oben und unten , zum Einstellen der Wertanzeige des PM2,5-Sensors oder des CO₂-Sensors; oder zum Einstellen des Einstellparameters.

The control button is controlled by:

• ON / OFF button: power switch, to turn on or off the control circuit of the cleaner;
• FAN button: to set the high, medium and low gears of supply fan and return air fan;
• MODE button: to set an automatic control mode and a manual control mode; wherein in the automatic control mode, the control circuit board of the cleaner automatically controls a wind speed of the supply air fan and the return air fan according to values confirmed by the PM2.5 sensor and the CO ₂ sensor; if the value of the PM2.5 sensor and the CO ₂ sensor is higher than the setpoint value, the supply air fan and the return air fan are set to high
• Gear to be adjusted; if the value of the PM2.5 sensor and the CO ₂ sensor is lower than the target value, the air supply fan and the return air fan are set to the medium or low speed;
• SLEEP button: Sleep mode, for automatically setting the wind speed of the supply air fan and the return air fan to the low gear;
• UP button and DOWN button: Adjustment button up and down, to set the value display of the PM2.5 sensor or the CO ₂ sensor; or to set the adjustment parameter.

The inner return air opening and the inner air supply opening are both arranged in a grid shape.

The rear end and upper end of the housing are provided with a suspension foot through which the cleaner hangs on the wall.

The supply air fan is located above the heat exchange core and the return air fan.

The electrical control box is located below the heat exchange core and the return air fan.

The electrical component comprises a transformer and a plurality of capacitors, wherein the transformer and all of the capacitors are electrically connected to the control circuit board.

The housing, the electrical control box and the suppression cap are all made of steel material.

The working principle or working method of the present invention are as follows:

In the present invention, the fresh outdoor air is filtered, cleaned and heat treated and then fed into the room while the internal return air is filtered, cleaned and heat treated and then discharged from the room. The outside fresh air and the inside back air are filtered, cleaned and both pass through the heat exchange core, the outside fresh air recovers in the heat exchange core the energy of the internal return air, whereby the effects of both the ventilation and the maintenance of temperature and humidity stability are achieved inside; when the fresh air cleaner equipped with the heat exchange core is operated during the summer cooling period, the outside fresh air receives the cold amount of the inside return air, so that the temperature is lowered and at the same time dried by internal back air, whereby the outside fresh air humidity is lowered; during winter operation, the outside fresh air receives the heat from the internal return air, so that the temperature rises and at the same time moistened by internal return air; at the same time, a replaceable fresh air filter element is disposed on the outside air opening, which can effectively remove various pollutants in the outside air, so that the fresh air cleaner can provide clean and oxygen-enriched air in the presence of outside air pollution and improve the applicability of the bidirectional fresh air cleaner; and at the inner return air opening, a replaceable return air filter element is arranged to prevent the dirty indoor air from entering the heat exchange core to keep the inside of the cleaner clean, and to extend the life of this machine, and maintenance is easy.

The above is only the embodiment of the present invention but does not limit the scope of the patent of the present invention. Any equivalent structural transformation made using the description and drawings of the present invention or the present invention which is directly or indirectly applied to other related technical fields should be within the scope of the present invention.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• CN 202452635 U [0004]

Claims (10)

Bidirectional fresh air cleaner, characterized in that it comprises a housing (5), an external inlet opening (1), an external exhaust opening (2), an internal return air opening (3), an internal air inlet opening (4), a heat exchange core (9) and an electrical control box (6) wherein a height direction of the housing is defined upwards and downwards, a width direction is defined left and right, and a thickness direction is defined forward and backward, wherein the outer exhaust port and the outer air opening are respectively at a lower end and a rear end of the housing Internal Rückluftluftöffnung is located at a right end, the inner air supply opening is located at an upper end of the housing, wherein the heat exchange core is in the middle and at a right end of the housing and the electrical control box is located at the lower end of the housing; wherein the heat exchange core is provided with a fresh air hole channel (91) and a return air hole channel (92), wherein the fresh air hole channel and the return air hole channel overlap alternately and the fresh air hole channel and the return air hole channel are not connected to each other; wherein an air channel connected to the fresh air hole channel is a fresh air channel, and an air channel connected to the return air hole channel is a return air channel, the fresh air channel being juxtaposed with an outside air opening, a fresh air hole channel of the heat exchange core, a fresh air guide plate (7), a supply air fan (10) along a flow direction of the fresh air. a fresh air filter element (11) and an inner air supply opening is provided, wherein the Außenenzuluftöffnung is connected to the Frischlochlochkanal the heat exchange core, the Frischluftlochkanal the heat exchange core is connected to the Zuluftführungsblech, the Zuluftführungsblech is connected to the Zuluftventilator, the Zuluftventilator is connected to the fresh air filter element and the Fresh air filter element is connected to the inner air supply port; wherein the return air passage is provided side by side along a flow direction of the return air with an inner return air port, a return air filter element (12), a return air passage of the heat exchange core, a return air guide plate (8), a return air fan (13) and an outer exhaust port, the inner return air port being connected to the return air filter element, the return air filter element is connected to the return air hole passage of the heat exchange core, the return air hole passage of the heat exchange core is connected to the return air guide plate, the return air guide plate is connected to the return air fan, and the return air fan is connected to the outside exhaust port; wherein the supply air guide plate (7) comprises a supply air side guide plate (71), an air supply guide plate having an opening (72), and an air intake side guide plate (73), one end of the supply air side guide plate being sealingly connected to the casing and the other end integrally formed is connected to the Zuluftführungsblech, one end of the guide inclined plate of the air supply side is sealingly connected to the housing and the other end is integrally connected to the Zuluftführungshauptblech, wherein the Führungsschrägplatte the Zuluftseite and the Führungsschrägplatte the air supply side are respectively located at both ends of the Zuluftführungshauptblechs, wherein between the Führungsschrägplatte the supply side and the supply air main plate a first angle (α1) is present and between the Führungsschrägplatte the air supply side and the supply air main plate a second angle (a2) is present, the he the first angle and the second angle are both obtuse angles; wherein the return air guide plate (8) comprises a return air side guide plate (81) and a return air guide main plate having an opening (82), one end of the return air side guide plate is sealingly connected to the housing and the other end is integrally connected to one end of the main return air guide plate and the other end of the return air guide main plate is sealingly connected to the housing, with a third angle (a3) being present between the guide air return air side plate and the main return air guide main plate, which is an obtuse angle; wherein the electrical control box (6) comprises a control circuit board (61) and an electrical component, the electrical component being electrically connected to the control circuit board, and wherein the supply air fan (10) and the return air fan (13) are each electrically connected to the control circuit board. Bidirectional fresh air purifier after Claim 1 , characterized in that the heat exchange core (9) is formed of a plurality of layers of wave papers superimposed side by side from bottom to top, the wave direction of each two adjacent layers of wave papers being 90 °. Bidirectional fresh air purifier after Claim 1 characterized in that a first air guide ring (14) is disposed between the supply air fan and the supply air guide plate, the supply air side of the first air guide ring being adapted to the opening of the supply air main plate and the air outlet side of the first air guide ring being fitted to an input port of the supply air fan; wherein the fresh air successively through the Außenenzuluftöffnung, the fresh air hole channel of the heat exchange core, the guide plate of the Zuluftseite the Zuluftführungsblechs, the Main air supply guide sheet, the first air guide ring, the supply air fan, the air intake side guide plate, the fresh air filter element and the inner air supply port flow. Bidirectional fresh air purifier after Claim 1 characterized in that a second air guide ring (15) is disposed between the return air fan and the return air guide plate, wherein the supply air side of the second air guide ring is fitted to the opening of the return air guide main plate and the air outlet side of the second air guide ring is adapted to an input port of the return air fan; wherein the return air flows successively through the inner return air opening, the return air filter element, the return air hole passage of the heat exchange core, the return air side guide slant plate of the return air guide plate, the return air guide main plate, the second air guide ring, the return air fan, and the outer exhaust hole. Bidirectional fresh air purifier after Claim 1 characterized in that the fresh air filter element (11) comprises a first filter layer and a second filter layer, the first filter layer disposed upstream of the second filter layer, the first filter layer being an activated carbon filter cotton layer and the activated carbon filter cotton layer being 0.5 cm to 1, 5 cm and the second filter layer is a HEPA filter layer and the HEPA filter layer has a thickness of 3 cm - 5 cm. Bidirectional fresh air purifier after Claim 1 , characterized in that the return air filter element (12) is an activated carbon filter layer and the return air filter element has a thickness of 0.5 cm to 1.5 cm. Bidirectional fresh air purifier after Claim 1 , characterized in that a lower part of the side wall of the housing is provided with a monitoring hole (24), wherein the monitoring hole and within the housing, a PM2.5 sensor (16) and a CO ₂ sensor (17) are arranged. Bidirectional fresh air purifier after Claim 1 characterized in that the housing is further provided with a door panel (22) provided with a touch screen (19), one side of the door panel being hingedly connected to the housing by an inner hinge and between the other side of the door panel and the door panel Housing a magnetic proximity switch or a pressure switch is provided. Bidirectional fresh air purifier after Claim 1 , characterized in that the first angle is 100 ° to 135 °, the second angle is 100 ° to 135 ° and the third angle is 100 ° to 135 °. Bidirectional fresh air purifier after Claim 8 characterized in that the touch screen comprises a display screen (20) and an operation button (21), wherein the display screen and the operation button are each electrically connected to the control circuit board.

Images