Fresh air purifier

Abstract

The present invention relates to a fresh air purifier, and relates to the field of air purification and ventilation technology. The fresh air purifier of the present invention includes a shell, a fan assembly and a main filter assembly; the shell has a fresh air inlet, a fresh air outlet, an exhaust chamber and a ventilation chamber, the exhaust chamber is isolated from the ventilation chamber, the fresh air inlet is connected to the ventilation chamber, and the fresh air outlet is connected to the exhaust chamber; the fan assembly is arranged in the exhaust chamber, and the fan assembly can make the fresh air flow between the fresh air inlet and the fresh air outlet; the main filter assembly is arranged in the exhaust chamber; wherein the filter surface of the main filter assembly is perpendicular to the axis of the fan assembly, so that the filter surface of the main filter assembly is perpendicular to the direction in which the fresh air enters the fan assembly. The technical solution disclosed in the present application can solve the problem that the filter net in the existing fresh air purifier is limited by the height of the ceiling-mounted fresh air purifier, the filter net replacement cycle is short and the filtering effect is poor.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification and ventilation, and in particular to a fresh air purifier. Background Art

[0002] As people's living standards improve, their requirements for indoor air are getting higher and higher, and the application of fresh air purification equipment is becoming more and more extensive. Fresh air purification equipment has the functions of ventilation, deodorization, dehumidification and room temperature regulation.

[0003] The ceiling-mounted fresh air purifier is one of the commonly used fresh air purification equipment. Through the ceiling-mounted fresh air purifier, the outdoor air can be sent into the room after dust removal, temperature adjustment and humidity adjustment, replacing the turbid gas in the room, maintaining the circulation of indoor and outdoor air, and thus improving the indoor air quality.

[0004] Existing ceiling-mounted fresh air purifiers have a filter on the fresh air side. The filtering surface area of ​​the filter is limited by the height of the ceiling-mounted fresh air purifier, resulting in a generally small size of the filter, a short filter replacement cycle, and poor filtering effect. Summary of the Invention

[0005] The embodiment of the present application provides a fresh air purifier, which can solve the problems of the filter in the existing fresh air purifier being limited by the height of the ceiling-mounted fresh air purifier, the short replacement cycle of the filter and the poor filtering effect.

[0006] In a first aspect, an embodiment of the present application provides a fresh air purifier, comprising:

[0007] A housing having a fresh air inlet, a fresh air outlet, an exhaust cavity and a ventilation cavity, wherein the exhaust cavity is isolated from the ventilation cavity, the fresh air inlet is connected to the ventilation cavity, and the fresh air outlet is connected to the exhaust cavity;

[0008] a fan assembly disposed in the exhaust cavity, the fan assembly enabling fresh air to flow between the fresh air inlet and the fresh air outlet; and

[0009] a main filter assembly, which is disposed in the exhaust cavity;

[0010] Wherein, the filtering surface of the main filtering assembly is perpendicular to the axis of the fan assembly, so that the filtering surface of the main filtering assembly is perpendicular to the direction in which fresh air enters the fan assembly.

[0011] In one embodiment, the fan assembly includes a fresh air fan unit, and the main filter assembly is respectively located on both sides of the fresh air fan unit in a direction parallel to the axis of the fresh air fan unit.

[0012] In one embodiment, the fresh air blower unit includes:

[0013] A volute having an output port and an input port, wherein the output port is located on a side wall of the volute, and the input ports are respectively located on both sides of the volute in a direction parallel to the axis of the volute;

[0014] a centrifugal fan blade rotatably disposed in the volute;

[0015] a support member disposed on one side of the volute, the support member covering a portion of the input port; and

[0016] a motor, which is disposed on the support member and can drive the centrifugal fan blades to rotate;

[0017] Wherein, the two main filter components are respectively arranged opposite to the two input ports.

[0018] In one embodiment, a placement piece is provided on the side wall of the shell, and the edge of the main filter assembly is inserted into the placement piece.

[0019] In one embodiment, the main filter component is a filter mesh, and the filter mesh is composed of molten PP and PET.

[0020] In one embodiment, the support member comprises:

[0021] a main body portion, which is perpendicular to the axial direction of the volute, the main body portion covers the input port, and a first distance is defined between the main body portion and the volute; and

[0022] an arch bridge portion, each located on both sides of the main body, the arch bridge portion having an air inlet section and an inclined section, one end of the air inlet section being connected to the main body, and the other end being connected to the inclined section, and the end of the inclined section away from the air inlet section being connected to the volute;

[0023] The air inlet section at least partially covers the input port, and there is a second distance between the air inlet section and the volute, and the second distance is greater than the first distance.

[0024] In one embodiment, the fresh air purifier includes:

[0025] a partition disposed in the exhaust cavity to separate the exhaust cavity into an exhaust air cavity and a fresh air cavity that are isolated from each other; and

[0026] A full heat exchange core is provided in the shell, the exhaust cavity and the ventilation cavity jointly enclose the full heat exchange core, and the full heat exchange core divides the ventilation cavity into an exhaust ventilation cavity and a fresh air ventilation cavity that are isolated from each other;

[0027] Wherein, the full heat exchange core connects the exhaust ventilation cavity with the exhaust air discharge cavity, and connects the fresh air ventilation cavity with the fresh air discharge cavity.

[0028] In one embodiment, the fresh air purifier includes:

[0029] A secondary filter assembly is arranged in the fresh air ventilation cavity, and the filter surface of the secondary filter assembly is perpendicular to the direction in which the fresh air flows into the full heat exchange core;

[0030] An exhaust filter assembly is arranged in the exhaust ventilation cavity, and a filter surface of the exhaust filter assembly is perpendicular to the direction in which the exhaust air flows into the full heat exchange core.

[0031] In one embodiment, the housing has an exhaust air inlet and an exhaust air outlet, the exhaust air inlet is connected to the exhaust ventilation cavity, and the exhaust air outlet is connected to the exhaust cavity;

[0032] The fresh air inlet is connected to the fresh air ventilation cavity, and the fresh air outlet is connected to the fresh air exhaust cavity;

[0033] Among them, the fresh air inlet and the fresh air outlet are arranged diagonally, the exhaust air inlet and the exhaust air outlet are arranged diagonally, and the fresh air inlet and the exhaust air outlet are located on the same side of the shell, and the fresh air outlet and the exhaust air inlet are located on the same side of the shell.

[0034] In one embodiment, the fan assembly includes an exhaust fan unit, which is disposed in the exhaust cavity and allows exhaust air to flow between the exhaust inlet and the exhaust outlet.

[0035] The fresh air fan unit is arranged in the fresh air exhaust cavity;

[0036] Wherein, the fresh air fan unit and the exhaust air fan unit are arranged side by side.

[0037] Compared with the prior art, the advantages of the embodiments of the present application are that the fresh air entering the room is filtered by setting a main filter assembly, and the filter surface of the main filter assembly is perpendicular to the axis of the fan assembly, so that the filter area of ​​the main filter assembly is not limited by the height of the fresh air purifier, thereby increasing the filter area of ​​the main filter assembly and improving the dust holding capacity, solving the problem that the filter screen in the existing fresh air purifier is limited by the height of the ceiling-mounted fresh air purifier, the replacement cycle of the filter screen is short, and the filtering effect is poor. At the same time, the air duct resistance of the present application is also effectively reduced, and the air volume loss is smaller. For example, the main filter assembly is located on both sides of the fresh air fan unit, and the main filter assembly is arranged relative to the input port of the main fan unit. By the main filter assembly being relative to the input port, the outdoor fresh air is fully in contact with the main filter assembly to improve the filtering effect; at the same time, the negative pressure formed by the fresh air fan unit at the input port can be used to provide power for the outdoor fresh air to pass through the filter assembly, reducing the air volume loss of the outdoor fresh air. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Hereinafter, the present invention will be described in more detail based on embodiments with reference to the accompanying drawings.

[0039] Figure 1 This is a schematic diagram of the structure of a fresh air purifier provided in an embodiment of the present invention, viewed from above;

[0040] Figure 2 yes Figure 1 Cross-sectional view along AA direction;

[0041] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the fresh air blower unit provided in the embodiment;

[0042] Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of the fresh air purifier provided in the embodiment.

[0043] Reference numerals:

[0044] 10. Housing; 110. Fresh air inlet; 120. Fresh air outlet; 130. Exhaust chamber; 140. Ventilation chamber; 150. Exhaust air inlet; 160. Exhaust air outlet; 170. Fresh air ventilation chamber; 180. Fresh air exhaust chamber; 190. Exhaust ventilation chamber; 191. Exhaust exhaust chamber; 20. Fan assembly; 210. Fresh air fan unit; 2101. Volute; 2102. Centrifugal Fan blades; 2103, support parts; 2104, motor; 2105, main body; 2106, arch bridge part; 2107, inclined section; 2108, air inlet section; 2109, input port; 2110, output port; 220, exhaust fan unit; 30, main filter assembly; 40, partition; 50, full heat exchange core; 60, auxiliary filter assembly; 70, placement part; 80-exhaust filter assembly. DETAILED DESCRIPTION

[0045] The present invention will be further described below with reference to the accompanying drawings.

[0046] The ceiling-mounted fresh air purifier is one of the commonly used fresh air purification equipment. Its principle is that indoor air enters the machine through the return air inlet, passes through the full heat exchange core and is discharged to the outside by the exhaust fan. Outdoor air enters the machine through the air inlet, passes through the full heat exchange core and is sent into the room by the supply fan. When the two air flows meet at the full heat exchange core, the temperature and humidity are exchanged. This cycle is repeated to achieve the purpose of replacing indoor air and reducing energy consumption.

[0047] Existing ceiling-mounted fresh air purifiers filter the fresh air entering the room by setting a filter on the fresh air side, and the filtering surface of the filter is parallel to the height direction of the ceiling-mounted fresh air purifier, resulting in the filtering area of ​​the filter being limited by the height of the ceiling-mounted fresh air purifier. The size of the filter is generally small, resulting in a short filter replacement cycle and poor filtering effect.

[0048] In order to solve the above technical problems, at least one embodiment of the present application provides a fresh air purifier, including a shell 10, a fan assembly 20 and a main filter assembly 30; the shell 10 has a fresh air inlet 110, a fresh air outlet 120, an exhaust chamber 130 and a ventilation chamber 140, the exhaust chamber 130 is isolated from the ventilation chamber 140, the fresh air inlet 110 is connected to the ventilation chamber 140, and the fresh air outlet 120 is connected to the exhaust chamber 130; the fan assembly 20 is arranged in the exhaust chamber 130, and the fan assembly 20 can make the fresh air flow between the fresh air inlet 110 and the fresh air outlet 120; the main filter assembly 30 is arranged in the exhaust chamber 130; wherein, the filtering surface of the main filter assembly 30 is perpendicular to the axis of the fan assembly 20, so that the filtering surface of the main filter assembly 30 is perpendicular to the direction in which the fresh air enters the fan assembly 20.

[0049] As can be seen from the above, by providing a main filter assembly 30 to filter the fresh air entering the room, and by making the filter surface of the main filter assembly 30 perpendicular to the axis of the fan assembly 20, the filter area of ​​the main filter assembly 30 is not limited by the height of the fresh air purifier, thereby increasing the filter area of ​​the main filter assembly 30 and improving the dust holding capacity. This solves the problem that the filter screen in the existing fresh air purifier is limited by the height of the ceiling-mounted fresh air purifier, the filter screen replacement cycle is short, and the filtering effect is poor. At the same time, the air duct resistance of the present application is also effectively reduced, and the air volume loss is smaller.

[0050] like Figure 1 、 Figure 4 As shown, the fresh air purifier includes a housing 10, a fan assembly 20 and a main filter assembly 30;

[0051] The shell 10 has a fresh air inlet 110, a fresh air outlet 120, an exhaust chamber 130 and a ventilation chamber 140. The exhaust chamber 130 is isolated from the ventilation chamber 140. The fresh air inlet 110 is connected to the ventilation chamber 140, and the fresh air outlet 120 is connected to the exhaust chamber 130. It should be noted that the fresh air purifier can be installed on the wall above the ceiling below the floor through the shell 10. It should also be noted that the shell 10 includes two panels arranged opposite to each other and a side panel located between the two panels. The panels are perpendicular to the axial direction of the fan assembly 20. The side panels are connected to the panels, and the fresh air inlet 110 and the fresh air outlet 120 are both located on the side panels. It should also be noted that the shell 10 has an inspection port, and the inspection port is provided with a detachable inspection door to facilitate the inspection of the fresh air purifier.

[0052] The fan assembly 20 is disposed within the exhaust chamber 130 and allows fresh air to flow between the fresh air inlet 110 and the fresh air outlet 120. It should be noted that the fresh air originates from outdoor air. The fan assembly 20 draws outdoor air into the room, improving indoor air quality and preventing air contamination.

[0053] The main filter assembly 30 is disposed in the exhaust chamber 130; wherein the filter surface of the main filter assembly 30 is perpendicular to the axis of the fan assembly 20, so that the filter surface of the main filter assembly 30 is perpendicular to the direction in which the fresh air enters the fan assembly 20. It should be noted that, if Figure 2 As shown, the axial direction of the fan assembly 20 is parallel to the Z direction, and the axial direction of the fan assembly 20 is parallel to the height direction of the fresh air purifier. It should also be noted that the direction in which the fresh air enters the fan assembly 20 is as shown in FIG. Figure 2 By aligning the filter surface of the main filter assembly 30 perpendicularly to the axis of the fan assembly 20, the filter area of ​​the main filter assembly 30 is not restricted by the height of the fresh air purifier, thereby increasing the filter area of ​​the main filter assembly 30 and improving the dust holding capacity, thereby extending the maintenance cycle of the fresh air purifier and the replacement cycle of the main filter assembly 30.

[0054] like Figure 2 As shown, in some embodiments, the fan assembly 20 includes a fresh air blower unit 210. The main filter assemblies 30 are located on both sides of the fresh air blower unit in a direction parallel to the axis of the fresh air blower unit 210. By arranging the main filter assemblies 30 on both sides of the fresh air blower unit, the filtration area is increased, thereby improving the filtration effect.

[0055] like Figure 2 、 Figure 3 As shown, in some embodiments, the fresh air blower unit 210 includes a volute 2101, centrifugal blades 2102, a support member 2103 and a motor 2104;

[0056] The volute 2101 has an outlet 2110 and an inlet 2109. The outlet 2110 is located on the sidewall of the volute 2101, and the inlet 2109 is located on either side of the volute 2101 in a direction parallel to the axis of the volute 2101. It should be noted that the volute 2101 includes an upper volute 2101 and a lower volute 2101, which are connected to form a cavity for accommodating the centrifugal fan blades 2102. It should also be noted that the axis of the volute 2101 is perpendicular to the panel.

[0057] The centrifugal fan blades 2102 are rotatably disposed in the volute 2101 . The rotation of the centrifugal fan blades 2102 creates negative pressure, causing outdoor fresh air to flow in from the fresh air inlet 110 and out from the fresh air outlet 120 .

[0058] The support member 2103 is provided on one side of the volute 2101 , and the support member 2103 covers a portion of the input port 2109 . The motor 2104 is mounted through the support member 2103 .

[0059] The motor 2104 is disposed on the support member 2103 and can drive the centrifugal fan blades 2102 to rotate. It should be noted that the rotating shaft of the motor 2104 is connected to the driving shaft of the centrifugal fan blades 2102, thereby realizing the rotation of the centrifugal fan blades 2102.

[0060] The two main filter assemblies 30 are respectively positioned opposite the two input ports 2109. The main filter assemblies 30 facing the input ports 2109 allow the outdoor fresh air to fully contact the main filter assemblies 30, thereby improving the filtering effect. Furthermore, the negative pressure created by the fresh air blower unit 210 at the input ports 2109 provides power for the outdoor fresh air to pass through the filter assemblies, thereby reducing air volume loss.

[0061] In some embodiments, a placement member 70 is provided on the sidewall of the housing 10, and the edge of the main filter assembly 30 is inserted into the placement member 70. It should be noted that the placement member 70 is connected to the side panel of the fresh air exhaust chamber 180, and a placement slot for inserting the main filter assembly 30 is provided on the side of the placement member 70 facing the main filter assembly 30. The placement member 70 provides a mounting support structure for the main filter assembly 30, and the insertion method facilitates the replacement of the main filter assembly 30.

[0062] In some embodiments, the primary filter assembly 30 is a filter screen composed of molten PP and PET. It should be noted that the thickness of the filter screen can be 25-40 mm. It should also be noted that PP is the abbreviation for polypropylene, and PET is the abbreviation for polyester resin.

[0063] like Figure 3As shown, in some embodiments, support member 2103 includes a main body 2105 and a bridge portion 2106. Main body 2105 is perpendicular to the axis of volute 2101, covers inlet 2109, and has a first spacing between main body 2105 and volute 2101. It should be noted that main body 2105 is parallel to the panel. Main body 2105 provides mounting support for motor 2104 and directs fresh air into fresh air blower unit 210 via the first spacing.

[0064] The arch bridge portion 2106 is located on both sides of the main body 2105. The arch bridge portion 2106 has an air inlet section 2108 and an inclined section 2107. One end of the air inlet section 2108 is connected to the main body 2105, and the other end is connected to the inclined section 2107. The end of the inclined section 2107 away from the air inlet section 2108 is connected to the volute 2101. The air inlet section 2108 at least partially covers the input port 2109. There is a second distance between the air inlet section 2108 and the volute 2101, and the second distance is greater than the first distance. It should be noted that the distance between the end of the inclined section 2107 connected to the air inlet section 2108 and the main body 2105 is L1, and the distance between the end of the inclined section 2107 not connected to the air inlet section 2108 and the main body 2105 is L2, and L1 < L2. Compared with the existing planar structure support 2103, the arch bridge portion 2106 can effectively reduce the obstruction of the input port 2109 and effectively reduce the loss of air volume; the gap between the arch bridge portion 2106 and the volute 2101 is increased through the air inlet section 2108, which facilitates the introduction of fresh air into the fresh air blower unit 210, and the volume of the arch bridge portion 2106 is increased through the inclined section 2107, expanding the air inlet area to further reduce the loss of air volume.

[0065] like Figure 1 、 Figure 2 As shown, in some embodiments, the fresh air purifier includes a partition 40 and a full heat exchange core 50; the partition 40 is disposed within the exhaust cavity 130 to separate the exhaust cavity 130 into an exhaust air cavity 191 and a fresh air cavity 180, which are isolated from each other. It should be noted that the partition 40 is also provided with a placement member 70 for inserting the main filter assembly 30 to provide better support for the main filter assembly 30.

[0066] The full heat exchange core 50 is arranged in the shell 10, and the exhaust cavity 130 and the ventilation cavity 140 jointly surround the full heat exchange core 50, and the full heat exchange core 50 divides the ventilation cavity 140 into an exhaust ventilation cavity 190 and a fresh air ventilation cavity 170 that are isolated from each other; wherein, the full heat exchange core 50 connects the exhaust ventilation cavity 190 with the exhaust exhaust cavity 191, and connects the fresh air ventilation cavity 170 with the fresh air exhaust cavity 180.

[0067] It should be noted that the projection of the full heat exchange core 50 on a plane perpendicular to the axial direction of the fan assembly 20 is a regular quadrilateral. It should also be noted that the full heat exchange core 50 has two surfaces parallel to the panel, one of which is in contact with the panel and the other is in contact with the wall on which the fresh air purifier is installed, so as to ensure the contact area between the exhaust air and the fresh air and the full heat exchange core 50, reduce energy consumption, and thus improve the exchange efficiency of the temperature and humidity of the exhaust air and the fresh air. It should also be noted that the full heat exchange core 50 includes a fresh air input end, a fresh air output end, an exhaust air input end, and an exhaust air output end, and the fresh air input end, the fresh air output end, the exhaust air input end, and the exhaust air output end are respectively connected to the fresh air ventilation chamber 170, the fresh air exhaust chamber 180, the exhaust ventilation chamber 190, and the exhaust exhaust chamber 191.

[0068] The full heat exchange core 50 is used to exchange the temperature and humidity of the indoor exhaust air with the outdoor fresh air, thereby increasing the temperature and humidity of the fresh air in winter and reducing the temperature and humidity of the fresh air in summer. At the same time, the good energy conversion characteristics of the full heat exchange core 50 are utilized to generate energy exchange during two-way displacement ventilation, so that the fresh air can effectively obtain the heat and humidity in the exhaust air, thereby achieving the purpose of energy-saving ventilation.

[0069] like Figure 1 、 Figure 4 As shown, in some embodiments, the fresh air purifier includes a sub-filter assembly 60 and an exhaust filter assembly 80; the sub-filter assembly 60 is arranged in the fresh air ventilation chamber 170, and the filter surface of the sub-filter assembly 60 is perpendicular to the direction in which the fresh air flows into the full heat exchange core 50. It should be noted that the sub-filter assembly 60 includes but is not limited to being composed of non-woven fabric, glass fiber, molten PP and PET. It should also be noted that the thickness of the sub-filter assembly 60 can be 15-25mm. The outdoor fresh air entering the fresh air ventilation chamber 170 is filtered once by the sub-filter assembly 60, and the main filter assembly 30 performs a second filtration on the outdoor fresh air, thereby reducing the maintenance cycle and replacement frequency of the main filter assembly 30 and improving the filtering effect of the outdoor fresh air.

[0070] The exhaust filter assembly 80 is disposed within the exhaust ventilation chamber 190, with its filter surface perpendicular to the direction of exhaust air flowing into the heat exchange core 50. It should be noted that the exhaust filter assembly 80 may be constructed, but is not limited to, from non-woven fabric, fiberglass, molten PP, and PET. It should also be noted that the thickness of the exhaust filter assembly 80 may range from 15 to 25 mm. The exhaust filter assembly 80 filters the indoor exhaust air entering the exhaust ventilation chamber 190.

[0071] like Figure 1 、 Figure 4As shown, in one embodiment, the housing 10 has an exhaust air inlet and an exhaust air outlet 160 , the exhaust air inlet is connected to the exhaust ventilation cavity 190 , and the exhaust air outlet is connected to the exhaust air cavity 191 ;

[0072] The fresh air inlet 110 is connected to the fresh air ventilation cavity 170, and the fresh air exhaust port is connected to the fresh air exhaust cavity 180;

[0073] Among them, the fresh air inlet 110 and the fresh air outlet 120 are diagonally arranged, the exhaust air inlet and the exhaust air outlet 160 are diagonally arranged, and the fresh air inlet 110 and the exhaust air outlet 160 are located on the same side of the shell 10, and the fresh air outlet 120 and the exhaust air inlet are located on the same side of the shell 10.

[0074] like Figure 1 、 Figure 2 、 Figure 4 As shown, in some embodiments, the fan assembly 20 includes an exhaust fan unit 220, which is arranged in the exhaust air chamber 191. The exhaust fan unit 220 can make the exhaust air flow between the exhaust air inlet and the exhaust air outlet 160; the fresh air fan unit 210 is arranged in the fresh air exhaust chamber 180; wherein the fresh air fan unit 210 and the exhaust fan unit 220 are arranged side by side. It should be noted that the exhaust air comes from the indoor air. It should also be noted that because the secondary filter assembly 60 and the main filter assembly 30 are respectively arranged in the fresh air ventilation chamber 170 and the fresh air exhaust chamber 180, the resistance of the fresh air fan unit 210 is greater than the resistance of the exhaust fan unit 220, which can make the air volume of the fresh air fan unit 210 greater than the air volume of the exhaust fan unit 220.

[0075] The exhaust fan unit 220 can be used to introduce indoor air to the outdoors to facilitate the replacement of indoor turbid air with fresh air. The outdoor air can be introduced into the indoor through the fresh air fan unit 210 to improve the indoor air quality and avoid indoor air pollution.

[0076] like Figure 4 The working principle of the fresh air purifier provided in the embodiment shown is: the fresh air fan unit 210 and the exhaust fan unit 220 work, the outdoor fresh air enters the fresh air ventilation chamber 170 from the fresh air inlet 110, is filtered by the auxiliary filter component 60, and then passes through the full heat exchange core 50 to exchange temperature and humidity before entering the exhaust cavity 191, and is filtered by the main filter component 30 and then passed through the fresh air fan unit 210 and sent into the room from the fresh air outlet 120; the indoor exhaust air enters the exhaust ventilation chamber 190 from the exhaust inlet, is filtered by the exhaust filter component 80, and then passes through the full heat exchange core 50 to exchange temperature and humidity before entering the exhaust cavity 191, and is discharged to the outside through the exhaust outlet 160 by the exhaust fan unit 220.

[0077] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A fresh air purifier, characterized in that: include: A housing having a fresh air inlet, a fresh air outlet, an exhaust cavity and a ventilation cavity, wherein the exhaust cavity is isolated from the ventilation cavity, the fresh air inlet is connected to the ventilation cavity, and the fresh air outlet is connected to the exhaust cavity; a fan assembly disposed in the exhaust cavity, the fan assembly enabling fresh air to flow between the fresh air inlet and the fresh air outlet, wherein the axial direction of the fan assembly is parallel to the height direction of the fresh air purifier; as well as a main filter assembly, which is disposed in the exhaust cavity; Wherein, the filtering surface of the main filter assembly is perpendicular to the axis of the fan assembly, so that the filtering surface of the main filter assembly is perpendicular to the direction in which fresh air enters the fan assembly; The fan assembly includes a fresh air fan unit, and the fresh air fan unit includes: A volute having an output port and an input port, wherein the output port is located on a side wall of the volute, and the input ports are respectively located on both sides of the volute in a direction parallel to the axis of the volute; a centrifugal fan blade rotatably disposed in the volute; a support member disposed on one side of the volute, the support member covering a portion of the input port; and a motor, which is disposed on the support member and can drive the centrifugal fan blades to rotate; The support member comprises: a main body portion, which is perpendicular to the axial direction of the volute, the main body portion covers the input port, and a first distance is defined between the main body portion and the volute; and an arch bridge portion, each located on both sides of the main body, the arch bridge portion having an air inlet section and an inclined section, one end of the air inlet section being connected to the main body, and the other end being connected to the inclined section, and the end of the inclined section away from the air inlet section being connected to the volute; The air inlet section at least partially covers the input port, and there is a second distance between the air inlet section and the volute, and the second distance is greater than the first distance.

2. The fresh air purifier according to claim 1, characterized in that: In a direction parallel to the axis of the fresh air fan unit, the main filter components are respectively located on both sides of the fresh air fan unit.

3. The fresh air purifier according to claim 2, characterized in that: The two main filter components are respectively arranged opposite to the two input ports.

4. The fresh air purifier according to claim 1, characterized in that: A placement piece is provided on the side wall of the shell, and the edge of the main filter assembly is inserted into the placement piece.

5. The fresh air purifier according to claim 1, characterized in that: The main filter component is a filter screen, which is made of molten PP and PET.

6. The fresh air purifier according to claim 1, characterized in that: The fresh air purifier comprises: a partition disposed in the exhaust cavity to separate the exhaust cavity into an exhaust air cavity and a fresh air cavity that are isolated from each other; and A full heat exchange core is provided in the shell, the exhaust cavity and the ventilation cavity jointly enclose the full heat exchange core, and the full heat exchange core divides the ventilation cavity into an exhaust ventilation cavity and a fresh air ventilation cavity that are isolated from each other; Wherein, the full heat exchange core connects the exhaust ventilation cavity with the exhaust air discharge cavity, and connects the fresh air ventilation cavity with the fresh air discharge cavity.

7. The fresh air purifier according to claim 6, characterized in that: The fresh air purifier comprises: A secondary filter assembly is arranged in the fresh air ventilation cavity, and the filter surface of the secondary filter assembly is perpendicular to the direction in which the fresh air flows into the full heat exchange core; An exhaust filter assembly is arranged in the exhaust ventilation cavity, and a filter surface of the exhaust filter assembly is perpendicular to the direction in which the exhaust air flows into the full heat exchange core.

8. The fresh air purifier according to claim 6, characterized in that: The housing has an exhaust air inlet and an exhaust air outlet, the exhaust air inlet is connected to the exhaust ventilation cavity, and the exhaust air outlet is connected to the exhaust cavity; The fresh air inlet is connected to the fresh air ventilation cavity, and the fresh air outlet is connected to the fresh air exhaust cavity; Among them, the fresh air inlet and the fresh air outlet are arranged diagonally, the exhaust air inlet and the exhaust air outlet are arranged diagonally, and the fresh air inlet and the exhaust air outlet are located on the same side of the shell, and the fresh air outlet and the exhaust air inlet are located on the same side of the shell.

9. The fresh air purifier according to claim 8, characterized in that: The fan assembly includes an exhaust fan unit, which is arranged in the exhaust cavity and can make the exhaust air flow between the exhaust inlet and the exhaust outlet; The fresh air fan unit is arranged in the fresh air exhaust cavity; Wherein, the fresh air fan unit and the exhaust air fan unit are arranged side by side.

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