Air purifier with double-air-duct structure

Abstract

The utility model discloses an air purifier with a double-air-duct structure, which is characterized in that two motors are arranged in the air purifier, a backward wind wheel is arranged on each of the two motors to form double air ducts, and volute tongues are arranged at air outlets of the air ducts. According to the air purifier with the double-air-duct structure, the double-air-duct structure is adopted to increase the air volume, high-frequency vibration caused by a high-rotating-speed motor and a large air wheel is avoided, the air purification amount in unit time can be effectively increased, and the air purifier has the advantages of being high in purification efficiency, low in power consumption, small in size, simple in structure, low in production cost and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of air purification, and in particular relates to an air purifier with a double air duct structure. Background Art

[0002] An air purifier is a device that purifies the air in a continuous cycle. It requires sufficiently high wind pressure to fully break through the resistance of the filter to form a strong airflow. Traditional air purifiers generally use large motors and large wind wheels to obtain sufficient wind pressure. However, this method causes the size of the air purifier to increase significantly, and the motor vibration to increase significantly.

[0003] In addition, in order to overcome motor vibration, traditional air purifiers often need to be equipped with a high-strength motor mounting bracket, which leads to increased production costs and increased product weight.

[0004] Due to the above reasons, it is necessary to further study the existing air purifiers in order to solve the above problems. Utility Model Content

[0005] In order to overcome the above problems, the inventors have conducted in-depth research and proposed an air purifier with a dual air duct structure.

[0006] An air purifier with a double air duct structure has two motors arranged inside. A backward wind wheel is arranged on each of the two motors to form a double air duct. A volute tongue is arranged at the air outlet position of the air duct.

[0007] Preferably, the two backward wind wheels are arranged side by side in the vertical direction.

[0008] Preferably, the two backward wind wheels are arranged side by side in the horizontal direction.

[0009] Preferably, two volute tongues are provided at the air outlet position of each air duct, and the two volute tongues are symmetrical with respect to the motor axis.

[0010] Preferably, the two volute tongues include a first volute tongue and a second volute tongue, the first volute tongue overlaps with the second volute tongue after rotating 180 degrees around the axis of the motor, and the direction of air flowing out through the first volute tongue is opposite to the direction of air flowing out through the second volute tongue.

[0011] Preferably, duct side panels are arranged around the four sides perpendicular to the motor rotation plane, and the duct side panels, duct lower shell and duct upper shell are arranged to form the external shell of the air purifier, and a filter is arranged between the two backward wind wheels and the duct upper shell.

[0012] Preferably, the air sucked by the backward wind wheel flows in through the filter screen, and then flows out through the volute tongue and the air duct side plate in sequence.

[0013] Preferably, duct side panels are arranged around the four sides perpendicular to the rotation plane of the motor, and the duct side panels, duct lower shell and duct upper shell are arranged to form the external shell of the air purifier; a power adapter is arranged on the inner wall of the duct side panels, and the output end of the power adapter is connected to a pin of a micro switch, and the other pin of the micro switch is connected to the power access end of the air purifier PCB board.

[0014] Preferably, a card slot is provided at the connection position between the inner side of the air duct side plate and the air duct lower shell, and the micro switch is turned on by pressing the micro switch touch panel through the card slot.

[0015] Preferably, a UVC sterilization device, a positive and negative ion sterilization device and an air detection sensor are provided in the air duct.

[0016] The utility model has the following beneficial effects:

[0017] (1) High purification efficiency, low power consumption and small size;

[0018] (2) Simple structure and low production cost;

[0019] (3) Has good wind pressure and low noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, in the drawings, the same parts are marked with the same reference numerals, and the drawings are not drawn according to the actual scale.

[0021] Figure 1 This is a schematic diagram of the explosion structure of an air purifier with a double air duct structure according to a specific embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the volute tongue structure of the air purifier with a double air duct structure according to a specific embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the circuit connection structure of a dual-duct structure air purifier according to a specific embodiment of the utility model.

[0024] Description of Figure Numbers

[0025] 1- Motor;

[0026] 2-Cochlear tongue;

[0027] 3-UVC sterilization device;

[0028] 4- Positive and negative ion sterilization device;

[0029] 5-Filter;

[0030] 12-rearward wind wheel;

[0031] 61- air duct lower shell;

[0032] 62- air duct upper shell;

[0033] 63- air duct side panel;

[0034] 64-power adapter;

[0035] 65-micro switch;

[0036] 66-PCB board;

[0037] 631-Formaldehyde sensor;

[0038] 632-Dust sensor. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments disclosed in the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Specific embodiments

[0042] According to the present embodiment, a dual-duct structure air purifier is provided, such as Figure 1-3 As shown, two motors 1 are arranged inside, and a backward wind wheel 12 is arranged on each of the two motors 1 to form a double air duct, and a volute tongue 2 is arranged at the air outlet position of the air duct.

[0043] In this embodiment, there are two motors 1, and a backward wind wheel 12 is arranged on each of the two motors 1 to form a double air duct to increase the air volume and avoid the high-frequency vibration caused by the use of high-speed motors and large wind wheels. This can effectively increase the air purification volume per unit time and improve the working efficiency of the air purifier.

[0044] Furthermore, by using the backward wind wheel 12, the wind pressure is increased, so that the performance attenuation of the filter 5 on the air purifier is reduced.

[0045] In a more preferred embodiment, two backward wind wheels 12 are arranged side by side in the horizontal direction. Figure 1 , Figure 1 It is an exploded structural diagram of two backward wind wheels 12 arranged side by side in the horizontal direction.

[0046] In a more preferred embodiment, the two backward wind wheels 12 are arranged side by side in the vertical direction. It is easy to understand that the two backward wind wheels 12 are arranged side by side in the horizontal direction or side by side in the vertical direction to form a double air duct inside the air purifier to increase the air volume.

[0047] In a more preferred embodiment, two volute tongues 2 are provided at the air outlet of each air duct, and the two volute tongues 2 are symmetrical with respect to the axis of the motor 1 .

[0048] The volute tongue 2 is a tongue-like structure formed by the shell wall at the connection between the air duct shell and the air outlet, and is often set in a centrifugal fan. In this embodiment, by setting two axially symmetrical volute tongues 2 at the air outlet position, the machine noise is effectively reduced while avoiding the mixing of air inside the air duct, so that there is no interference between the two air ducts.

[0049] Please refer to Figure 2 In a more preferred embodiment, the two volute tongues 2 include a first volute tongue and a second volute tongue. The first volute tongue overlaps with the second volute tongue after rotating 180 degrees around the axis of the motor 1, and the direction of air flowing out through the first volute tongue is opposite to the direction of air flowing out through the second volute tongue, so as to minimize the problem of mutual interference between the dual air ducts.

[0050] In a more preferred embodiment, air duct side plates 63 are arranged around the periphery perpendicular to the rotation plane of the motor 1, and the air duct side plates 63, the air duct lower shell 61, and the air duct upper shell 62 are arranged to form the outer shell of the air purifier, and a filter 5 is arranged between the two backward wind wheels 12 and the air duct upper shell 62. The filter 5 includes a HEPA filter and an activated carbon filter, and the HEPA filter and the activated carbon filter are both commonly used filters 5 in air purification devices.

[0051] In a more preferred embodiment, the air sucked by the backward wind wheel 12 flows in through the filter screen 5 and then flows out through the volute tongue 2 and the air duct side plate 63 in sequence.

[0052] In a more preferred embodiment, a duct side plate 63 is provided around the periphery perpendicular to the rotation plane of the motor 1, and the duct side plate 63, the duct lower shell 61, and the duct upper shell 62 are surrounded to form an outer shell of the air purifier; please refer to Figure 3, a power adapter 64 is provided on the inner wall of the air duct side plate 63, the output end of the power adapter 64 is connected to one pin of the micro switch 65, and the other pin of the micro switch 65 is connected to the power access end of the air purifier PCB board 66. When the micro switch 65 is turned on, the output end of the power adapter 64 is electrically connected to the power access end of the PCB board 66; when the micro switch 65 is turned off, the output end of the power adapter 64 is disconnected from the power access end of the PCB board 66. In this embodiment, the power adapter 64 is used to replace the step-down circuit of the PCB board 66, and the power adapter 64 is separated from the PCB board 66 by the micro switch 65, so as to achieve physical separation of strong electricity and weak electricity and improve safety.

[0053] In a more preferred embodiment, a card slot is provided at the connection position between the inner side of the air duct side plate 63 and the air duct lower shell 61, and the micro switch 65 is turned on by pressing the micro switch 65 touch panel through the card slot. When the air duct side plate 63 is detached from the air duct lower shell 61, the micro switch 65 is disengaged from the card slot, thereby closing the micro switch 65, so that when the shell is disassembled, the power supply of the PCB board 66 is automatically disconnected, thereby protecting the device and the user.

[0054] In a more preferred embodiment, a UVC sterilization device 3, a positive and negative ion sterilization device 4 are provided in the air duct to sterilize the air, and an air detection sensor is provided to detect the indoor air quality. In this embodiment, the specific models of the UVC sterilization device 3 and the positive and negative ion sterilization device 4 are not limited, and those skilled in the art can use any known model. The air detection sensor includes a formaldehyde sensor 631 and a dust sensor 632.

[0055] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "front", "rear", "up", "down", "left", "right", etc. are directions or positional relationships based on the working state of the present invention, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0056] The above are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-duct structure air purifier, characterized in that: Two motors (1) are arranged side by side inside, and a backward wind wheel (12) is arranged on each of the two motors (1) to form a double air duct, and a volute tongue (2) is arranged at the air outlet position of the air duct, and two volute tongues (2) are arranged at the air outlet position of each air duct; an air duct side plate (63) is arranged on the side of the air duct, and the air duct side plates (63) are multiple, and the multiple air duct side plates (63) are used to form an air duct; an air detection sensor is arranged in the air duct.

2. The double-duct structure air purifier according to claim 1, characterized in that: The two backward wind wheels (12) are arranged side by side in the vertical direction.

3. The double-duct structure air purifier according to claim 1, characterized in that: The two backward wind wheels (12) are arranged side by side in the horizontal direction.

4. The double-duct structure air purifier according to claim 2 or 3, characterized in that: The two volute tongues (2) are symmetrical with respect to the axis of the motor (1).

5. The double-duct structure air purifier according to claim 4, characterized in that: The two volute tongues (2) include a first volute tongue and a second volute tongue, wherein the first volute tongue overlaps with the second volute tongue after rotating 180 degrees around the axis of the motor (1), and the direction of air flowing out through the first volute tongue is opposite to the direction of air flowing out through the second volute tongue.

6. The double-duct structure air purifier according to claim 5, characterized in that: Air duct side plates (63) are arranged around the four sides perpendicular to the rotation plane of the motor (1); the air duct side plates (63) and the air duct lower shell (61) and the air duct upper shell (62) are arranged to form the external shell of the air purifier; and a filter screen (5) is arranged between the two backward wind wheels (12) and the air duct upper shell (62).

7. The double-duct structure air purifier according to claim 6, characterized in that: The air sucked in by the backward wind wheel (12) flows in through the filter screen (5), and then flows out through the volute tongue (2) and the air duct side plate (63) in sequence.

8. The double-duct structure air purifier according to claim 4, characterized in that: Air duct side panels (63) are arranged around the periphery perpendicular to the rotation plane of the motor (1), and the air duct side panels (63) and the air duct lower shell (61) and the air duct upper shell (62) are arranged to form an external shell of the air purifier; a power adapter (64) is arranged on the inner wall of the air duct side panels (63), the output end of the power adapter (64) is connected to a pin of a micro switch (65), and the other pin of the micro switch (65) is connected to a power access end of a PCB board (66) of the air purifier.

9. The double-duct structure air purifier according to claim 8, characterized in that: A slot is provided at the connection position between the inner side of the air duct side plate (63) and the air duct lower shell (61), and the micro switch (65) is turned on by pressing the micro switch touch panel through the slot.

10. The double-duct structure air purifier according to claim 4, characterized in that: A UVC sterilization device (3) and a positive and negative ion sterilization device (4) are arranged in the air duct.

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