Fresh air conditioning unit

Abstract

The utility model discloses a fresh air conditioning unit, and belongs to the technical field of fresh air conditioning units. The fresh air conditioning unit comprises a box body and a triplet ion generator. An air supply channel is formed in the box body, a first air supply opening is formed in the air supply channel, and the air supply channel is used for processing outdoor air and sending the processed outdoor air into a room through the first air supply opening; the triplet ion generator is installed at the first air supply outlet and used for generating and releasing triplet ions. In the fresh air conditioning unit provided by the embodiment of the utility model, the triplet ion generator can enable filtered air to be mixed with triplet ions and react with the triplet ions, so that harmful substances such as tiny particulate matters, bacteria, viruses and the like in the air are effectively removed, and the purified air can enter a room.

Description

Technical Field

[0001] This utility model relates to the technical field of fresh air conditioning units, and in particular to a fresh air conditioning unit. Background Technology

[0002] Fresh air conditioning units can achieve bidirectional air circulation between indoors and outdoors. However, fresh air conditioning units often have shortcomings in air purification, and are unable to effectively remove harmful substances such as tiny particulate matter, bacteria, and viruses from the air. Utility Model Content

[0003] This utility model provides a fresh air conditioning unit to solve at least one of the above-mentioned technical problems.

[0004] The new air conditioning unit of this utility model includes a housing and a triplet ion generator. The housing forms an air supply channel, and the air supply channel forms a first air outlet. The air supply channel is used to process outdoor air and deliver it indoors through the first air outlet. The triplet ion generator is installed at the first air outlet and is used to generate and release triplet ions.

[0005] In the fresh air conditioning unit of this utility model embodiment, the triplet ion generator can mix the filtered air with triplet ions and react to effectively remove harmful substances such as fine particulate matter, bacteria, and viruses from the air, so that the purified air can enter the room.

[0006] In some embodiments, the triplet ion generator is positioned adjacent to the first air outlet.

[0007] In some embodiments, the orthographic projection of the triplet ion generator is located within the orthographic projection of the first air outlet along the extension direction of the first air outlet.

[0008] In some embodiments, the triplet ion generator is installed at the center of the first air outlet.

[0009] In some embodiments, the housing also forms an exhaust duct, which is isolated from the supply duct, and the exhaust duct forms a first exhaust port, which is used to exhaust indoor air to the outside.

[0010] In some embodiments, the first exhaust vent and the first supply vent are located on opposite sides of the housing.

[0011] In some embodiments, a first fan is provided in the air supply duct, which drives outdoor air into the air supply duct and forms a first air field within the air supply duct; a second fan is provided in the exhaust duct, which drives indoor air into the exhaust duct and forms a second air field within the exhaust duct; the housing also includes a partition, which isolates the first air field and the second air field; the air volume ratio of the first air field to the second air field is 1:(1±5%).

[0012] In some embodiments, the air supply duct further forms a second air outlet for allowing outdoor air to pass through and enter the air supply duct; the exhaust duct further forms a second exhaust outlet for allowing indoor air to pass through and enter the exhaust duct; the first air outlet and the second exhaust outlet are located on opposite sides of the housing.

[0013] In some embodiments, the fresh air conditioning unit further includes a first filter, a heat exchanger, and a first fan disposed in the air supply duct. The first fan is used to drive outdoor air into the air supply duct. The first filter, the heat exchanger, and the first fan are arranged sequentially along the airflow direction of the air supply duct, and the first filter is close to the second air outlet.

[0014] In some embodiments, the fresh air conditioning unit further includes a second fan and a second filter disposed in the exhaust duct. The second fan is used to drive indoor air into the exhaust duct. Along the airflow direction of the exhaust duct, the second fan and the second filter are arranged in sequence. The second filter is close to the second exhaust port and is a one-way filter.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of the fresh air conditioning unit according to an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Enlarged view of Part II of the fresh air conditioning unit;

[0019] Figure 3 yes Figure 1 A structural schematic diagram of a fresh air conditioning unit from another perspective.

[0020] Explanation of reference numerals in the attached figures:

[0021] Fresh air conditioning unit 100; casing 10; air supply duct 11; first air supply outlet 110; triple-state ion generator 20; exhaust duct 12; first exhaust outlet 120; front panel 13; rear panel 14; side panel 15; first fan 30; second fan 40; partition 16; second air supply outlet 111; second exhaust outlet 121; first filter 50; heat exchanger 60; second filter 70. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0027] Please refer to Figure 1 and Figure 2 The fresh air conditioning unit 100 of this utility model includes a housing 10 and a triplet ion generator 20. The housing 10 forms an air supply channel 11, and the air supply channel 11 forms a first air outlet 110. The air supply channel 11 is used to process outdoor air and deliver it indoors through the first air outlet 110. The triplet ion generator 20 is installed at the first air outlet 110 and is used to generate and release triplet ions.

[0028] In the fresh air conditioning unit 100 of this utility model embodiment, the triplet ion generator 20 can mix the filtered air with triplet ions and react to effectively remove harmful substances such as fine particulate matter, bacteria, and viruses from the air, so that the purified air can enter the room.

[0029] Specifically, the fresh air handling unit 100 refers to a composite air handling device that integrates air temperature regulation, humidity control, and fresh air exchange. The fresh air handling unit 100 can achieve directional replacement of indoor and outdoor air through a mechanical ventilation system. By installing a triple-state ion generator 20 in the fresh air handling unit 100, multiple purification technologies can be combined to dynamically process the air entering the room, thereby meeting the needs for indoor environmental health and comfort.

[0030] The enclosure 10 can be a sealed shell made of sheet metal, engineering plastics or other materials. The enclosure 10 can serve as the mounting carrier for the internal components of the fresh air conditioning unit 100, and can also serve as the boundary of the air supply duct 11 or other airflow ducts.

[0031] The air supply duct 11 can be a channel for outdoor air to enter the room. The air supply duct 11 can be a straight channel, a curved channel, a branched channel, etc., designed according to the air flow requirements.

[0032] The first air outlet 110 can be an opening located on the side of the housing 10 closest to the interior. The first air outlet 110 can serve as the airflow outlet at the end of the air supply duct 11. The first air outlet 110 can have a guiding structure to achieve directional airflow distribution. The shape of the first air outlet 110 can be a regular shape such as a circle or square, or an irregular shape. The number of first air outlets 110 can be one or more. For example, the number of first air outlets 110 can be two, three, four, or even more.

[0033] The triplet ion generator 20 can be detachably installed at the first air outlet 110 via bolts, snap-fit ​​connections, or welding and bonding. The triplet ion generator 20 can be directly installed on the housing 10 or indirectly installed on the housing 10 via other components. For example, the triplet ion generator 20 can be installed at the first air outlet 110 via a bracket. The housing 10 can have threaded holes at the first air outlet 110, and the bracket can have corresponding threaded holes. By fixing the triplet ion generator 20 to the bracket and then fixing the two threaded holes, the triplet ion generator 20 can be installed.

[0034] The triplet ion generator 20, or triplet particle generator, is a composite ionization device that can simultaneously generate hydroxyl radicals, hydrogen peroxide, and negative oxygen ions. It may include components such as a high-voltage power supply, discharge electrodes, and a catalytic coating.

[0035] The triplet ion generator 20 accelerates electrons on a nanomaterial catalytic substrate through the electron avalanche effect, and then reacts with water molecules under electrocatalysis to generate triplet ions consisting of negative oxygen ions (O2-), water-based hydroxyl ions (-OH), and active positive ions (H+). Air passing through the first air outlet 110 can mix with the triplet ions and react, thereby achieving the purpose of purifying the air and sterilizing it.

[0036] The triplet ion generator 20 can collect moisture in the air under the Peltier effect, cool and condense it, and attach water to the surface of the avalanche electrode. Under the strong electric field within the triplet ion generator 20, the positive and negative discharge electrodes of the avalanche electrode undergo a tip discharge reaction. Initial electrons are generated near the avalanche electrode, and through collisional ionization, the number of electrons increases exponentially, forming an electron avalanche effect. This generates water-based OH radicals, which combine with water molecules and are released into the air in the form of atomization diffusion and aerosols. The positive and negative discharge electrodes react with oxygen and small-particle water molecules in the air to produce negative oxygen ions and positive hydrogen ions.

[0037] The number of triplet ion generators 20 can be one or more. For example, there can be two, three, four or even more triplet ion generators 20.

[0038] In some embodiments, the triplet ion generator 20 is positioned close to the first air outlet 110. This arrangement shortens the transmission distance of the triplet ions, ensuring effective air purification in the area of ​​the first air outlet 110, and also prevents physical impact from high-speed airflow on the triplet ion generator 20, thus extending its lifespan.

[0039] Specifically, "adjacent" means that the distance between the triplet ion generator 20 and the first air outlet 110 is very close. The distance between the triplet ion generator 20 and the first air outlet 110 can be in the range of [0.1cm, 5cm]. For example, it can be any one of 0.1cm, 1cm, 2cm, 3cm, 4cm, 5cm, or any range between two of them.

[0040] Please refer to Figure 3 In some embodiments, the orthographic projection of the triplet ion generator 20 is located within the orthographic projection of the first air outlet 110 along the extending direction of the first air outlet 110.

[0041] In this way, the airflow path of the triplet ion generator 20 and the first air outlet 110 area are integrated, which can realize the instantaneous mixing of the triplet ions released by the triplet ion generator 20 with the air in the first air outlet 110 area, reduce the attenuation of triplet ions during the transportation process, and thus improve the purification effect of the triplet ion generator 20.

[0042] Specifically, the extension direction of the first air outlet 110 refers to the physical extension direction of the first air outlet 110. The triplet ion generator 20 can be installed on one of the side walls forming the first air outlet 110, or installed in the middle of the first air outlet 110.

[0043] In some embodiments, the triplet ion generator 20 is installed at the center of the first air outlet 110.

[0044] Thus, by installing the triplet ion generator 20 in the center of the first air outlet 110, triplet ions can be evenly distributed in the area of ​​the first air outlet 110, thereby improving the purification effect of the triplet ion generator 20.

[0045] Specifically, the center of the first air outlet 110 refers to its geometric center. When the size of the triplet ion generator 20 is larger than the size of the first air outlet 110, the edge of the triplet ion generator 20 can be directly connected to the periphery of the first air outlet 110 using bolts, adhesive, or other methods. When the size of the triplet ion generator 20 is smaller than or equal to the size of the first air outlet 110, the triplet ion generator 20 can be mounted on a bracket and connected to the periphery of the first air outlet 110 via the bracket.

[0046] Please refer to Figure 1 In some embodiments, the housing 10 also forms an exhaust duct 12, which is isolated from the air supply duct 11. The exhaust duct 12 forms a first exhaust port 120 and is used to exhaust indoor air to the outside.

[0047] In this way, the airflow in the exhaust duct 12 and the airflow in the supply duct 11 flow in opposite directions, and the two airflows are isolated from each other, which can avoid cross-contamination.

[0048] Specifically, the boundary of the exhaust duct 12 can be defined by the housing 10. The exhaust duct 12 can be a channel for indoor air to flow to the outside. The exhaust duct 12 can be a straight channel, a curved channel, a branched channel, etc., designed according to airflow requirements.

[0049] The first exhaust vent 120 can be an opening located on the outdoor side of the housing 10. The first exhaust vent 120 can serve as the airflow outlet at the end of the exhaust duct 12. The first exhaust vent 120 can have a guiding structure to achieve directional airflow distribution. The shape of the first exhaust vent 120 can be a regular shape such as circular or square, or it can be an irregular shape. The number of first exhaust vents 120 can be one or more. For example, the number of first exhaust vents 120 can be two, three, four, or even more.

[0050] Please refer to Figure 1 In some embodiments, the first exhaust vent 120 and the first supply vent 110 are located on opposite sides of the housing 10.

[0051] Thus, by placing the first exhaust vent 120 and the first supply vent 110 on opposite sides of the housing 10, not only can the airflow output from the first exhaust vent 120 and the first supply vent 110 be prevented from interfering with each other, but the structure of the fresh air conditioning unit 100 is also simplified, and the installation of the fresh air conditioning unit 100 is facilitated.

[0052] Specifically, the enclosure 10 may include a front panel 13 and a rear panel 14 spaced apart from the front panel 13, with the two ends of the front panel 13 and the rear panel 14 connected by side panels 15 respectively. The front panel 13 is located on the outdoor side of the enclosure 10. The rear panel 14 is located on the indoor side of the enclosure 10. A first exhaust vent 120 may be located on the front panel 13. A first supply vent 110 may be located on the rear panel 14.

[0053] Please refer to Figure 1 In some embodiments, a first fan 30 is provided in the air supply duct 11, which drives outdoor air into the air supply duct 11 and forms a first air field in the air supply duct 11; a second fan 40 is provided in the exhaust duct 12, which drives indoor air into the exhaust duct 12 and forms a second air field in the exhaust duct 12; the housing 10 also includes a partition 16, which isolates the first air field and the second air field; the air volume ratio of the first air field and the second air field is 1:(1±5%).

[0054] Thus, the first fan 30 can drive outdoor air into the room through the air supply duct 11, creating positive pressure air supply. The second fan 40 can draw in stale indoor air, creating negative pressure exhaust. Through the action of the two fans, and by setting the airflow ratio of the first and second air fields to 1:(1±5%), a slight positive pressure can be maintained indoors, preventing unfiltered air from infiltrating. The partition 16 can physically isolate the first and second air fields, thus avoiding cross-contamination.

[0055] Specifically, the first fan 30 is a fan installed in the air supply duct 11, used to drive outdoor air into the air supply duct 11. The first fan 30 can form a first air field within the air supply duct 11, ensuring that outdoor air can smoothly enter the unit for treatment. The first fan 30 can be a centrifugal fan, axial fan, etc., and a suitable fan type can be selected according to actual needs.

[0056] The second fan 40 is a fan installed in the exhaust duct 12 to drive indoor air into the exhaust duct 12. The second fan 40 can create a second airflow field within the exhaust duct 12, ensuring that indoor air can be smoothly discharged to the outside. The second fan 40 can be a centrifugal fan, axial fan, etc., and the appropriate fan type can be selected according to actual needs.

[0057] The first airflow area is the air flow region within the supply air duct 11. The second airflow area is the air flow region within the exhaust air duct 12. Isolation means that there is no direct airflow connection between the first and second airflow areas.

[0058] The partition 16 can be made of metal or engineering plastic. Seals, such as sealant or gaskets, can be installed between the partition 16 and other parts of the housing 10 to enhance the sealing effect. The partition 16 can connect the front panel 13 and the rear panel 14, and is spaced apart from the side panel 15.

[0059] The air volume ratio refers to the ratio of the air volume of the first wind field to that of the second wind field. The reference value for the air volume of the first wind field can be 1. The reference value for the air volume of the second wind field can be 1.05.

[0060] Please refer to Figure 1 In some embodiments, the air supply duct 11 is further formed with a second air supply port 111, which is used to allow outdoor air to pass through and enter the air supply duct 11; the exhaust duct 12 is further formed with a second exhaust port 121, which is used to allow indoor air to pass through and enter the exhaust duct 12; the first air supply port 110 and the second exhaust port 121 are arranged on opposite sides of the housing 10.

[0061] Thus, by placing the second exhaust vent 121 and the second supply vent 111 on opposite sides of the housing 10, not only can the airflow output from the second exhaust vent 121 and the second supply vent 111 be prevented from interfering with each other, but the structure of the fresh air conditioning unit 100 is also simplified, and the installation of the fresh air conditioning unit 100 is facilitated.

[0062] Specifically, the second air outlet 111 can be an opening located on the outdoor side of the housing 10. The second air outlet 111 can serve as the airflow inlet of the air supply duct 11. The second air outlet 111 can have a guiding structure to achieve directional airflow distribution. The shape of the second air outlet 111 can be a regular shape such as circular or square, or it can be an irregular shape. The number of second air outlets 111 can be one or more. For example, the number of second air outlets 111 can be two, three, four, or even more.

[0063] The second exhaust vent 121 can be an opening located on the side of the housing 10 closest to the interior. The second exhaust vent 121 can serve as the airflow inlet of the exhaust duct 12. The second exhaust vent 121 can have a guiding structure to achieve directional airflow distribution. The shape of the second exhaust vent 121 can be a regular shape such as circular or square, or it can be an irregular shape. The number of second exhaust vents 121 can be one or more. For example, the number of second exhaust vents 121 can be two, three, four, or even more.

[0064] The second air supply vent 111 can be located on the front panel 13. The second air exhaust vent 121 can be located on the rear panel 14.

[0065] Please refer to Figure 1 In some embodiments, the fresh air conditioning unit 100 further includes a first filter 50, a heat exchanger 60 and a first fan 30 disposed in the air supply duct 11. The first fan 30 is used to drive outdoor air into the air supply duct 11. The first filter 50, the heat exchanger 60 and the first fan 30 are arranged in sequence along the airflow direction of the air supply duct 11. The first filter 50 is close to the second air outlet 111.

[0066] In this way, the first fan 30 can drive outdoor air through the first filter 50 and heat exchanger 60 into the room, forming positive pressure air supply. The first filter 50 can filter the air entering the air supply duct 11, thereby reducing the load on the triple-state ion generator 20, improving the air purification effect, and preventing outdoor pollutants from entering the heat exchanger 60, thus extending the service life of the heat exchanger 60. The heat exchanger 60 can preheat the outdoor air, reducing the load on the fresh air conditioning unit 100.

[0067] Specifically, the first filter 50 can be detachably installed on the housing 10 via bolts, snap-fit ​​connections, or other methods, or it can be installed on the housing 10 via welding, bonding, or other methods. The first filter 50 is used to filter outdoor air entering the air supply duct 11. The first filter 50 can remove impurities and pollutants from the air. The first filter 50 may include a pre-filter, a medium-efficiency filter, or a high-efficiency filter, etc., with a suitable filter combination selected according to actual needs. The first filter 50 is located near the second air outlet 111, ensuring that the air entering the air supply duct 11 is filtered first.

[0068] Heat exchanger 60 is a heat exchange device installed in air supply duct 11 to regulate air temperature. Heat exchanger 60 can be a water-cooled heat exchanger 60, an air-cooled heat exchanger 60, etc., and the appropriate type of heat exchanger 60 should be selected according to actual needs.

[0069] Please refer to Figure 1 In some embodiments, the fresh air conditioning unit 100 further includes a second fan 40 and a second filter 70 disposed in the exhaust duct 12. The second fan 40 is used to drive indoor air into the exhaust duct 12. The second fan 40 and the second filter 70 are arranged sequentially along the airflow direction of the exhaust duct 12. The second filter 70 is close to the second exhaust port 121 and is a one-way filter.

[0070] Thus, the second filter 70 can filter the indoor air entering the exhaust duct 12. Furthermore, since the second filter 70 is a one-way filter, it can prevent outdoor pollutants from back-infiltrating when the second fan 40 is stopped.

[0071] Specifically, the second filter 70 can be detachably installed on the housing 10 via bolts, snap-fit ​​connections, or other methods, or it can be installed on the housing 10 via welding, bonding, or other methods. The second filter 70 is used to filter indoor air entering the exhaust duct 12. The second filter 70 can remove impurities and pollutants from the air. The second filter 70 may include a pre-filter, a medium-efficiency filter, or a high-efficiency filter, etc., with a suitable filter combination selected according to actual needs. The second filter 70 is located near the second exhaust vent 121, ensuring that the air entering the supply air duct 11 is filtered first. The second filter 70 is a one-way filter, allowing air to flow only along the airflow direction of the exhaust duct, or in other words, flowing from indoors to outdoors.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0073] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fresh air air conditioning unit, characterized in that, The fresh air air conditioning unit comprises: a cabinet body, the cabinet body is formed with a supply air passage, the supply air passage is formed with a first supply air outlet, the supply air passage is used for sending outdoor air to the indoor after treatment through the first supply air outlet; a triplet ion generator, the triplet ion generator is installed at the first supply air outlet, and the triplet ion generator is used for generating and releasing triplet ions.

2. The fresh air air conditioning unit according to claim 1, characterized in that, The triplet ion generator is arranged close to the first supply air outlet.

3. The fresh air air conditioning unit according to claim 1, characterized in that, The orthogonal projection of the triplet ion generator is located in the orthogonal projection of the first supply air outlet along the extension direction of the first supply air outlet.

4. The fresh air air conditioning unit of claim 3, wherein, The triplet ion generator is installed at the center of the first supply air outlet.

5. The fresh air air conditioning unit of claim 1, wherein, The cabinet body is further formed with an exhaust air passage, the exhaust air passage is isolated from the supply air passage, the exhaust air passage is formed with a first exhaust air outlet, and the exhaust air passage is used for discharging indoor air to the outdoor.

6. The fresh air air conditioning unit of claim 5, wherein, The first exhaust air outlet and the first supply air outlet are arranged on opposite sides of the cabinet body.

7. The fresh air air conditioning unit of claim 5, wherein, The supply air passage is provided with a first fan, the first fan is used for driving outdoor air to enter the supply air passage and form a first air field in the supply air passage; the exhaust air passage is provided with a second fan, the second fan is used for driving indoor air to enter the exhaust air passage and form a second air field in the exhaust air passage; the cabinet body further comprises a partition plate, the partition plate is used for isolating the first air field and the second air field; the air volume ratio of the first air field to the second air field is 1:(1±5%).

8. The fresh air air conditioning unit of claim 5, wherein, The supply air passage is further formed with a second supply air outlet, the second supply air outlet is used for outdoor air to pass through and enter the supply air passage; the exhaust air passage is further formed with a second exhaust air outlet, the second exhaust air outlet is used for indoor air to pass through and enter the exhaust air passage; the first supply air outlet and the second exhaust air outlet are arranged on opposite sides of the cabinet body.

9. The fresh air air conditioning unit of claim 8, wherein, The fresh air air conditioning unit further comprises a first filter, a heat exchanger and a first fan arranged in the supply air passage, the first fan is used for driving outdoor air to enter the supply air passage, the first filter, the heat exchanger and the first fan are arranged in sequence along the air flow direction of the supply air passage, and the first filter is close to the second supply air outlet.

10. The fresh air air conditioning unit of claim 8, wherein, The fresh air air conditioning unit further comprises a second fan and a second filter arranged in the exhaust air passage, the second fan is used for driving indoor air to enter the exhaust air passage, the second fan and the second filter are arranged in sequence along the air flow direction of the exhaust air passage, the second filter is close to the second exhaust air outlet and is a one-way filter.

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