Double-fan air purifier with top-bottom air inlet and middle air outlet structure

Abstract

The utility model provides an air purifier with a double-fan top-bottom air inlet and middle air outlet structure, which comprises a shell, a first air inlet is arranged at the top of the shell, and a second air inlet is arranged at the bottom of the shell; a first fan is arranged below the first air inlet, and a second fan is arranged above the second air inlet; air flow generated by the first draught fan and the second draught fan flows out along an air outlet in the middle of the shell, and the air outlet is located in the circumferential side face of the first draught fan and the circumferential side face of the second draught fan. Through a double-fan structure, the efficiency of the air purifier is improved by adopting a two-way air inlet mode; the air outlets are formed in the peripheral side faces of the first draught fan and the second draught fan, airflow generated by the first draught fan and the second draught fan flows out in the horizontal direction, the height of the shell can be effectively compressed, and the miniaturization requirement of a user is met.

Description

Technical Field

[0001] This utility model relates to an air purifier with a dual-fan top and bottom air inlet and middle air outlet structure, belonging to the technical field of air purification equipment. Background Technology

[0002] Traditional air purifiers typically use a single motor and a single impeller, resulting in limited air purification efficiency. When it's necessary to improve air purification efficiency, the motor speed is often increased. However, increasing the motor speed leads to stricter quality control requirements for the motor and increased noise.

[0003] Therefore, it is necessary to conduct in-depth research on existing air purifiers to solve the above problems. Utility Model Content

[0004] To overcome the above problems, this utility model proposes an air purifier with a dual-fan top and bottom air inlet and middle air outlet structure, including a housing. The top of the housing is provided with a first air inlet, and the bottom of the housing is provided with a second air inlet. A first fan is provided below the first air inlet, and a second fan is provided above the second air inlet. The airflow generated by the first fan and the second fan flows out along the air outlet in the middle of the housing, and the air outlet is located on the peripheral side of the first fan and the second fan.

[0005] In a preferred embodiment, a flat first filter element is provided between the first air inlet and the first fan, and a flat second filter element is provided between the second air inlet and the second fan; the first filter element, the first fan, the second fan and the second filter element are stacked vertically inside the housing.

[0006] In a preferred embodiment, the airflow generated by the first fan flows in from the first air inlet, is filtered by the first filter element, and flows out from the air outlet; the airflow generated by the second fan flows in from the second air inlet, is filtered by the second filter element, and flows out from the air outlet.

[0007] In a preferred embodiment, both the first fan and the second fan have a volute duct along the horizontal direction on their peripheral surfaces, and each volute duct has at least two air outlets in different directions.

[0008] In a preferred embodiment, a fixing plate is provided laterally inside the housing, and the first fan and the second fan are respectively fixed to the upper end face and the lower end face of the fixing plate; the first fan and the second fan are mirror-symmetrical along the fixing plate.

[0009] In a preferred embodiment, the first fan or the second fan comprises a motor and a backward centrifugal impeller mounted on the motor, and the motor is fixed on the fixed plate.

[0010] In a preferred embodiment, the back of the backward centrifugal impeller is provided with a sink, and the motor is built in the sink.

[0011] In a preferred embodiment, the first filter core or the second filter core is a single filter structure or a combination of multiple filter structures.

[0012] In a preferred embodiment, the top of the shell is provided with a tray, the tray is concave from the edge to the middle, and a dust collection bag is arranged in the middle of the tray.

[0013] In a preferred embodiment, a dust collection box is arranged at the second air inlet.

[0014] The beneficial effects of the present application include:

[0015] (1) effectively increasing the air purification amount per unit time;

[0016] (2) effectively compressing the internal space of the shell to meet the miniaturization needs of users;

[0017] (3) suitable for pet-keeping family users, and can reduce the phenomenon of indoor hair flying around;

[0018] (4) low power consumption and low use noise. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 showing a cross-sectional structure schematic diagram of an air purifier according to a preferred embodiment of the present application;

[0020] Figure 2 showing a fan structure schematic diagram of an air purifier according to a preferred embodiment of the present application;

[0021] Figure 3 showing a backward centrifugal impeller structure schematic diagram of an air purifier according to a preferred embodiment of the present application.

[0022] EXPLANATION OF REFERENCE NUMBERS:

[0023] 1 - shell; 11 - tray; 111 - dust collection bag; 12 - dust collection box;

[0024] 21 - first air inlet; 22 - second air inlet;

[0025] 31 - first fan; 32 - second fan;

[0026] 41 - first filter core; 42 - second filter core;

[0027] 5-Volume air duct;

[0028] 6-Air outlet;

[0029] 7-Fixing plate;

[0030] 81-Motor; 82-Backward centrifugal impeller; 821-Settling tank. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more apparent.

[0032] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0033] According to this utility model, an air purifier with a dual-fan top and bottom air inlet and middle air outlet structure is provided, such as... Figure 1 As shown, the device includes a housing 1, with a first air inlet 21 at the top and a second air inlet 22 at the bottom. A first fan 31 is located below the first air inlet 21, and a second fan 32 is located above the second air inlet 22. The airflow generated by the first fan 31 and the second fan 32 flows out along the air outlet 6 in the middle of the housing 1. The air outlet 6 is located on the circumferential side of the first fan 31 and the second fan 32.

[0034] In this invention, a first fan 31 and a second fan 32 are arranged in the middle of the housing 1 to achieve air intake from the top and bottom and air exhaust from the middle. Firstly, the bidirectional air intake structure can increase the air purification capacity per unit time. Secondly, the use of dual fans instead of the traditional single high-speed fan can reduce production costs and reduce wind noise. Thirdly, the air outlet 6 is arranged on the peripheral side of the first fan 31 and the second fan 32, and the airflow generated by the first fan 31 and the second fan 32 flows out in the horizontal direction, which can effectively compress the height of the housing 1 and meet the user's miniaturization requirements.

[0035] Specifically, such as Figure 1 As shown, when the air purifier is started, the first fan 31 and the second fan 32 operate, causing outside air to enter the housing 1 through the first air inlet 21 at the top and the second air inlet 22 at the bottom, respectively, and to be discharged from the air outlet 6 in the middle of the housing 1. It can be understood that the shape, size, and power of the first fan 31 and the second fan 32 can be the same or different, and no limitation is made here.

[0036] In a preferred embodiment, such asFigure 1 As shown, a first filter core 41 in a flat plate shape is arranged between the first air inlet 21 and the first fan 31, and a second filter core 42 in a flat plate shape is arranged between the second air inlet 22 and the second fan 32; the first filter core 41, the first fan 31, the second fan 32 and the second filter core 42 are vertically stacked in the housing 1. Specifically, the first filter core 41 and the second filter core 42 respectively filter the air entering the housing 1 from the first air inlet 21 and the second air inlet 22, and the filtered air is discharged from the air outlet 6 to achieve the air purification effect.

[0037] In a preferred embodiment, the airflow generated by the first fan 31 flows in from the first air inlet 21, is filtered by the first filter core 41, and then flows out from the air outlet 6; the airflow generated by the second fan 32 flows in from the second air inlet 22, is filtered by the second filter core 42, and then flows out from the air outlet 6.

[0038] In a preferred embodiment, the peripheral side surface of the first fan 31 and the peripheral side surface of the second fan 32 are each provided with a horizontal volute air duct 5, and each volute air duct 5 is provided with at least two air outlets 6 in different directions. Specifically, the distribution of the air outlets 6 is generally adapted to the shape of the housing 1, and the cross section of the housing 1 is generally designed to be square or circular.

[0039] When the cross section of the housing 1 is square, the air outlets 6 of the volute air duct 5 can be designed to be two, three, or four; the air outlets 6 are preferably two, and the two air outlets 6 are located on opposite sides of the housing 1, i.e. the air outlets 6 of a single volute air duct 5 are in opposite directions, and such a structure of air outlets on two sides can avoid direct blowing to the user; further, when the directions of the air outlets 6 of the volute air duct 5 on the peripheral side surface of the first fan 31 and the directions of the air outlets 6 of the volute air duct 5 on the peripheral side surface of the second fan 32 are perpendicular along the horizontal plane, air outlets on four sides can be achieved.

[0040] When the cross section of the housing 1 is circular, the air outlets 6 of the volute air duct 5 can be designed to be two or more; the air outlets 6 are preferably three, and the three air outlets 6 are uniformly distributed on the side surface of the housing 1.

[0041] In a preferred embodiment, as shown in Figure 1As shown, the fixed plate 7 is transversely arranged in the shell 1, and the first fan 31 and the second fan 32 are respectively fixed to the upper end face and the lower end face of the fixed plate 7; the first fan 31 and the second fan 32 are mirror-symmetrically distributed along the fixed plate 7. Specifically, the fixed plate 7 is installed at the middle part of the shell 1, transversely arranged between the first fan 31 and the second fan 32, and forms a part of the two volute air ducts 5, thereby further compressing the height of the shell 1. The first fan 31 and the second fan 32 are mirror-symmetrically distributed, so that the air flow generated by the first fan 31 and the second fan 32 is gathered along the vertical direction to the volute air duct 5 at the middle part of the shell 1, thereby avoiding the problem of air flow interference between the two fans, and maximizing the superposition of the purification efficiency.

[0042] Further, in order to ensure the stable operation of the air purifier, the fixed plate 7 is usually arranged as a metal reinforcing plate.

[0043] In a preferred embodiment, as shown in Figure 2 , Figure 3 The first fan 31 or the second fan 32 comprises a motor 81 and a backward centrifugal impeller 82 installed on the motor 81, and the motor 81 is fixed to the fixed plate 7.

[0044] In a preferred embodiment, as shown in Figure 2 The back surface of the backward centrifugal impeller 82 is provided with a sink 821, and the motor 81 is built in the sink 821. In this embodiment, the motor 81 is built in the sink 821 at the back surface of the backward centrifugal impeller 82, and the motor 81 does not occupy additional space in the vertical direction, thereby further compressing the height of the shell 1.

[0045] In a preferred embodiment, the first filter element 41 or the second filter element 42 is a single filter structure or a combination of multiple filter structures. The specific material of the first filter element 41 or the second filter element 42 is not limited in the present application, and those skilled in the art can select the commonly used filter material in the art according to actual needs. In this embodiment, the first filter element 41 or the second filter element 42 is a composite filter structure composed of hepa filter paper and carbon bricks, which has good air purification effect.

[0046] In a preferred embodiment, the shell 1 is provided with a tray 11 at the top, the tray 11 is concave from the edge to the middle part, and a dust collecting bag 111 is arranged at the middle part of the tray 11. This embodiment is suitable for pet users, and the tray 11 at the top of the shell 1 is convenient for pets to rest, and the dust collecting bag 111 is used to collect pet hair.

[0047] In a preferred embodiment, the second air inlet 22 is provided with a dust collecting box 12. In this embodiment, since the second air inlet 22 is arranged at the bottom of the shell 1, dust and hair in the air are easy to accumulate at the second air inlet, and the dust collecting box 12 arranged at the second air inlet 22 allows the accumulated dust and hair to fall into the dust collecting box 12 under the action of gravity, which is convenient for cleaning.

[0048] In the description of the present application, it should be pointed out that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the working state of the present application, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "fixing", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection, it can be mechanical connection, or electrical connection, it can be direct connection, or indirect connection through intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] The above describes the present application in combination with the preferred embodiments, but these embodiments are only exemplary and serve only to illustrate. On this basis, various substitutions and improvements can be made to the present application, which all fall within the scope of protection of the present application.

Claims

1. An air purifier with a double-fan top-and-bottom air inlet and middle air outlet structure, characterized in that: a housing (1) is provided with a first air inlet (21) at the top and a second air inlet (22) at the bottom; a first fan (31) is arranged below the first air inlet (21), and a second fan (32) is arranged above the second air inlet (22); the air flows generated by the first fan (31) and the second fan (32) flow out through an air outlet (6) in the middle of the housing (1), and the air outlet (6) is located on the side surface of the first fan (31) and the second fan (32).

2. The air purifier according to claim 1, characterized in that: a first filter core (41) in the form of a flat plate is arranged between the first air inlet (21) and the first fan (31), and a second filter core (42) in the form of a flat plate is arranged between the second air inlet (22) and the second fan (32); the first filter core (41), the first fan (31), the second fan (32), and the second filter core (42) are vertically stacked in the housing (1).

3. The air purifier according to claim 2, characterized in that: the air flow generated by the first fan (31) flows in from the first air inlet (21) and flows out from the air outlet (6) after being filtered by the first filter core (41); the air flow generated by the second fan (32) flows in from the second air inlet (22) and flows out from the air outlet (6) after being filtered by the second filter core (42).

4. The air purifier according to claim 1, 2, or 3, characterized in that: the side surface of the first fan (31) and the side surface of the second fan (32) are each provided with a volute air duct (5) in the horizontal direction, and each volute air duct (5) is provided with at least two air outlets (6) in different directions.

5. The air purifier according to claim 4, characterized in that: a fixed plate (7) is transversely arranged in the housing (1), and the first fan (31) and the second fan (32) are respectively fixed to the upper end surface and the lower end surface of the fixed plate (7); the first fan (31) and the second fan (32) are mirror-symmetric along the fixed plate (7).

6. The air purifier according to claim 5, characterized in that: the first fan (31) or the second fan (32) comprises a motor (81) and a backward centrifugal impeller (82) mounted on the motor (81), and the motor (81) is fixed to the fixed plate (7).

7. The air purifier according to claim 6, characterized in that: the back surface of the backward centrifugal impeller (82) is provided with a sunken groove (821), and the motor (81) is built into the sunken groove (821).

8. The air purifier according to claim 2 or 3, characterized in that: the first filter core (41) or the second filter core (42) is a single filter structure or a combination of multiple filter structures.

9. The air purifier according to any one of claims 1-3, 5-7, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ The shell (1) is provided with a tray (11) at the top, the tray (11) is concave from the edge to the middle, and a dust collecting bag (111) is arranged in the middle of the tray (11) and downward.

10. The air cleaner according to any one of claims 1-3, 5-7, wherein, A dust collecting box (12) is arranged at the second air inlet (22).

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