CN207838552U - A kind of air purifier - Google Patents

Abstract

The utility model discloses an air purifier, which comprises a cylindrical filter device. The two ends of the filter device are respectively connected with a cylindrical first end fan and a second end fan. The first end fan The same structure as the second end fan, the first end fan and the second end fan are arranged symmetrically, the air flow enters the filter device from the outside and is filtered by the filter device, and enters to both sides The first end fan and the second end fan are simultaneously discharged outward by the first end fan and the second end fan. The air purifier, by using the first end fan and the second end fan with the same structure on both sides of the air outlet of the filter device, realizes the way of simultaneous air outlet on both sides, which can effectively increase the air volume and ensure low noise. Increase the CADR value of the air purifier.

Description

an air purifier

technical field

The utility model relates to the technical field of air purification devices, in particular to an air purifier.

Background technique

With the deterioration of air quality, more and more people begin to pay attention to the impact of air quality on human health. Air purifiers, also known as air cleaners, air fresheners, and purifiers, refer to air pollutants that can absorb, decompose, or transform various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde and other decoration pollution, bacteria , allergens, etc.), products used to improve air cleanliness, which have been widely used in homes, offices and other places.

The power source of the air purifier is the fan, and the operating condition of the fan directly affects the performance of the air purifier. Air purifiers usually use a single fan or single air outlet. Under the noise requirements, the static pressure and air output of a single fan are difficult to meet the ideal requirements, and the CADR value of the purifier is also difficult to make a breakthrough.

Therefore, how to propose an air purifier that can meet the noise requirements and improve the CADR value of the purifier is an urgent problem to be solved.

Utility model content

The purpose of the utility model is to propose an air purifier, which can not only meet the noise requirement, but also effectively improve the CADR value.

For this purpose, the utility model adopts the following technical solutions:

An air purifier, comprising a cylindrical filter device, the two ends of the filter device are respectively connected with a cylindrical first end fan and a second end fan, the first end fan and the second The end fans have the same structure, the first end fan and the second end fan are arranged symmetrically, the air flow enters the filter device from the outside and is filtered by the filter device, and then enters the first end to both sides. The fan at the end and the fan at the second end are exhausted by the fan at the first end and the fan at the second end at the same time.

Wherein, both the first end fan and the second end fan include a cylindrical end cover with an open end, and a fan assembly installed in the end cover through the opening, and the end cover A soft material is arranged between the fan assembly and the fan assembly to absorb the vibration of the fan assembly.

Wherein, the inside of the end cover is provided with an annular step, the fan assembly includes a circular air channel bottom plate, the outer periphery of the air channel bottom plate is covered with the soft material, and the soft material is built on the on the steps.

Wherein, the fan assembly also includes an impeller assembly arranged above the air channel bottom plate, the impeller assembly includes an impeller body, a mounting ring arranged above the impeller body, and several blades, and the impeller body protrudes upwards with The boss, the blades are connected between the impeller body and the mounting ring and are centrifugally distributed outward around the outer circumference of the boss, and the distance between the air inlets of any two adjacent blades is smaller than that between the air outlets distance between.

Wherein, the blade includes a blade connection section and a blade body, the blade connection section is away from the boss and connected to the mounting ring, and the blade body is close to the boss.

Wherein, the blade connection section and the blade body are arranged in opposite directions, an angle is formed between the blade connection section and the blade body, the blade body is curved, and the bending direction of the blade body is towards the side where the boss is located.

Wherein, a motor installation groove is arranged in the boss, and a motor assembly is installed in the motor installation groove, and a column protrudes upward from the top of the air duct bottom plate, and the motor assembly is installed on the column. The motor assembly is capable of driving the impeller assembly for rotation about the central axis.

Wherein, the top of the boss is conical, and the air passes through the conical surface of the boss and transitions to between the blades and flows out from the air inlet to the air outlet.

Wherein, a support cover is provided above the impeller assembly, and an air channel cover is provided on the top of the support cover, and the air channel cover extends into the filter device for connection.

Wherein, the filter device includes a semi-arc-shaped back cover and a front cover, the back cover and the front cover are interlocked to form a circular cavity, and a semi-arc-shaped bracket is arranged in the cavity, and the bracket A Hypa component is accommodated in the front cover, and a gap is opened in the front cover. The Hypa component is installed in the cavity through the gap, and a front door cover is installed in the gap, and the front door cover passes through The front door locking block is connected with the front door.

The beneficial effect of the utility model is: the air purifier of the utility model, by using the first end fan and the second end fan with the same structure on both sides of the air outlet of the filter device, realizes the way of simultaneous air outlet on both sides, It can effectively increase the air volume and ensure low noise, thereby improving the CADR value of the air purifier.

At the same time, it adopts an overall cylindrical shape structure, which can install and utilize the filter device, the first end fan, and the second end fan to the greatest extent, thereby further improving the purification efficiency.

Description of drawings

Fig. 1 is the overall structural representation of the air purifier of the present utility model;

Fig. 2 is a schematic diagram of the exploded structure of the air cleaner in Fig. 1;

Fig. 3 is a schematic diagram of an exploded structure of the filtering device in Fig. 2;

Fig. 4 is a schematic diagram of the overall structure of the first end fan/second end fan in Fig. 1;

Fig. 5 is a schematic diagram of an exploded structure of the first end fan/second end fan in Fig. 4;

Fig. 6 is a structural schematic diagram of the first end fan/second end fan in Fig. 4 after removing the air duct cover plate and the bracket cover plate;

Fig. 7 is a structural schematic diagram of the first end fan/second end fan in Fig. 6 after the end cover is removed;

Fig. 8 is a structural schematic diagram of the first end fan/second end fan in Fig. 7 after the soft material is removed;

Fig. 9 is a three-dimensional structural schematic diagram 1 of the first end fan/second end fan in Fig. 8 after removing the air channel floor;

Fig. 10 is a schematic diagram 2 of the three-dimensional structure of the first-end fan/second-end fan in Fig. 8 after removing the bottom plate of the air duct;

Fig. 11 is a three-dimensional structural schematic diagram of the first end fan/second end fan in Fig. 8 after removing the air channel bottom plate;

Fig. 12 is a schematic top view of the first-end fan/second-end fan in Fig. 8 after removing the bottom plate of the air duct.

In the figure: 10-filter device; 20-first end fan; 30-second end fan;

101-rear cover; 102-bracket; 103-filter device wire cover; 104-hypa component; 105-front cover; 106-front door cover; 107-front door locking block;

1-end cover; 11-step; 2-air channel floor; 3-soft material; 4-motor assembly; 5-impeller assembly; 51-impeller body; 52-installation ring; 53-blade; 531-blade connecting section ; 532-blade body; 54-boss; 55-air inlet; 56-air outlet; Motor mounting slot.

Detailed ways

The technical solution of the present utility model will be further described below in conjunction with accompanying drawings 1-12 and through specific embodiments.

As shown in Fig. 1 and Fig. 2, the air purifier of the present utility model comprises a cylindrical filter device 10, and the two ends of the filter device 10 are respectively connected with a cylindrical first end fan 20 and a second end Fan 30, the first end fan 20 and the second end fan 30 have the same structure, the first end fan 20 and the second end fan 30 are symmetrically arranged, and the airflow enters the After being filtered by the filter device 10 in the filter device 10, it enters the first end fan 20 and the second end fan 30 to both sides, and the first end fan 20 and the second end fan 30 External fan 30 is discharged outwards simultaneously.

As shown in Figure 3, the filter device 10 includes a semi-arc-shaped rear cover 101 and a front cover 105, the rear cover 101 and the front cover 105 are interlocked to form a circular cavity, and the cavity is set There is a semi-arc-shaped support 102, and the Hypa assembly 104 is accommodated in the support 102, and the front cover 105 is provided with a gap, and the Hypa assembly 104 is installed in the cavity from the gap, and the gap A front door cover 106 is installed in the middle, and a front door 108 is connected to the front door cover 106 through a front door locking block 107 . Further, in order to facilitate the internal wiring of the filter device, a wire slot is provided on the bracket 102, and a wire cover plate 103 of the filter device is correspondingly provided at the wire slot.

It uses the first end fan 20 and the second end fan 30 with the same structure on both sides of the air outlet of the Hypa module 104 at the air inlet to realize the dual air outlet mode of simultaneous air outlet on both sides, which is relatively common Under the influence of the wind pressure of the fan, the pressure difference between the inside and outside of the Hypa module increases, so that the amount of air filtered by the Hypa module increases per unit time, and the amount of fresh air thrown out by the fan per unit time also increases. Increase, so as to effectively increase the air volume, ensure lower noise, and finally increase the CADR value of the air purifier.

At the same time, it adopts an overall cylindrical shape structure, which facilitates the installation and disassembly of the Hypa component 104 in the filter device 10. The first end fan and the second end fan are arranged at both ends of the Hypa component 104, which can Further improve the purification efficiency.

As shown in Figures 4 to 8, the first end fan 20 and the second end fan 30 both include a cylindrical end cover 1 with an open end, and are installed on the end cover 1 through the opening. For the fan assembly inside the cover 1, a soft material 3 is provided between the end cover 1 and the fan assembly to absorb the vibration of the fan assembly. In particular, the inside of the end cover 1 is provided with an annular step 11, the fan assembly includes a circular air channel bottom plate 2, the outer periphery of the air channel bottom plate 2 is covered with the soft material 3, the The soft material 3 is set on the step 11 , and the inside of the end cover 1 is provided with a plurality of ring-shaped and evenly distributed buckles, and the soft material 3 is stuck at the bottom of the buckles. It can be seen that the bottom of the air duct bottom plate 2 and the soft material 3 are supported by the step 11 , and the top is limited by the buckle, so that they are fixed between the step 11 and the buckle.

The soft material 3 of the present utility model is silica gel, which can be arranged close to the surface of the air duct bottom plate 2; and the soft material 3 is an annular structure, and the inner side of the annular structure is provided with an annular groove, and the air duct bottom plate 2 is inserted into the annular groove , the lower end wall of the annular groove cooperates with the step 11, and the upper end wall of the annular groove cooperates with the buckle. Wherein, the thickness of the bottom wall of the annular groove is 1-3 mm, and the thickness of the upper end wall and the lower end wall is 2-4 mm. For example, the bottom wall thickness (radial thickness) of the soft material 3 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm , 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, preferably 2mm, and the thickness of the upper end wall and the lower end wall of the soft material 3 (upper and lower end surfaces Thickness) can be 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5 mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, preferably 3mm.

A space for installing a circuit board is provided between the bottom plate of the air duct and the end surface of the end cover 1 .

A soft material is used to support between the step 11 of the end cover 1 and the air duct bottom plate 2, so that the vibration noise of the air duct bottom plate 2 will be absorbed by the soft material during transmission, reducing the impact of fan vibration on the noise of the whole machine. This method changes the existing hard-contact fixing method, thus solving the problem that the fan blades run at high speed during the working process, the blade balance is poor, and the vibration of the motor itself causes the vibration of the entire fan assembly to increase, which affects the noise of the whole machine. . In addition, while solving the problem of noise, the flexible material also plays a sealing effect, thereby ensuring the air outlet efficiency.

As shown in Figures 5 to 12, the fan assembly also includes an impeller assembly 5 arranged above the air channel bottom plate 2, the impeller assembly 5 includes an impeller body 51, and the edge corresponding to the impeller body 51 is arranged on The mounting ring 52 and several blades 53 above the impeller body 51, the top surface of the impeller body 51 protrudes upwards with a boss 54, and the blades 53 are connected between the impeller body 51 and the mounting ring 52 And centrifugally distributed outward around the outer circumference of the boss 54 , the distance between the air inlets 55 of any two adjacent blades 53 is smaller than the distance between the air outlets 56 . In this embodiment, there is a distance between the end of the vane 53 close to the boss 54 and the boss 54 , and the two do not contact.

The blade 53 includes a blade connection section 531 and a blade body 532, the blade connection section 531 is away from the boss 54 and connected to the mounting ring 52, the blade body 532 is close to the boss 54 and connected to the The mounting ring 52 is described above. In this embodiment, the blade connection section 531 and the blade body 532 are inclined in opposite directions, and the connection between the blade connection section 531 and the blade body 532 forms an included angle, that is, the blade connection section 531 and the blade body 532 form a √-shaped structure .

The blade body 532 of the present invention is curved. Preferably, the bending direction of the blade body 532 faces the side where the boss 54 is located.

Viewing the impeller body downward from the top surface of the boss 54 , the extension direction of the blade connecting sections 531 is arranged in a counterclockwise direction, and the extension direction of the blade bodies 532 is arranged in a clockwise direction.

The thickness of the blade connecting section 531 is greater than the thickness of the blade body 532 .

The structure of the blade adopts the centrifugal type, which is different from the axial flow type. Its bending direction is the same as the trajectory of the gas, so it follows the flow direction of the gas, and the absolute speed of the backward blade to the airflow is also smaller than that of the forward type. The speed of collision with the end cover is also small; the distance between two adjacent blade bodies gradually expands from the inside to the outside, and the expansion is relatively gentle, and the airflow is relatively smooth. Therefore, its energy loss is compared with that of the forward type. Lower, and then increase the air output of the air purifier while meeting the noise requirements.

In this embodiment, the parameters of the blades are as follows: impeller diameter 100mm, blade 10, blade height 35mm, the minimum width at the entrance of the blade channel formed by two adjacent blades is 6.5mm, and the minimum width at the outlet of the blade channel is 13.2 mm. mm, the arc length of the blade is 36mm, and the diameter of the inlet of the blade channel is 53mm.

With this blade form, the volute is eliminated in the structure of the fan, and the diameter of the impeller is increased under a certain space limitation, the air volume of the fan is increased, and the air outlet area is increased under the same air volume to achieve the effect of noise reduction.

As shown in Figure 5 and Figure 11, the bottom of the boss 54 is provided with a motor installation groove 91, the motor assembly 4 is installed in the motor installation groove 91, and the top of the air duct floor 2 protrudes upwards with a column, The motor assembly 4 is installed on the column, and the motor assembly 4 can drive the impeller assembly 5 to rotate along the central axis.

As shown in Figures 4 to 12, the top of the boss 54 is conical, and the air flow passes through the conical surface of the boss 54 and transitions between the blades 53 from the air inlet 55 to the air outlet 56 flow out. Boss 54 includes a cylindrical section at the bottom and a conical section at the top, the top of the conical section is hemispherical, the bottom surface of the conical section is adapted to the top surface of the cylindrical section, and the connection between the conical section and the cylindrical section is an arc transition. The radius of the hemisphere at the top of the cone segment is 7-8 mm. For example, the radius of the top hemispherical shape of the conical segment can be 7mm, 7.1mm, 7.2mm, 7.3mm, 7.4mm, 7.5mm, 7.6mm, 7.7mm, 7.8mm, 7.9mm, 8mm. The diameter of the cylindrical section is 35-45mm. For example, the diameter of the cylindrical segment may be 35mm, 36mm, 37mm, 38mm, 39mm, 40mm, 41mm, 42mm, 43mm, 44mm, 45mm.

Because in the prior art, the radial diameter of the boss 54 is more than 30mm, when the fan is working normally, most of the air volume of the fan directly impacts the end face in the radial direction, resulting in the loss of part of the air volume, and the distributed air volume at the entrance of the fan channel At the same time, the direct impact of the air intake of the fan on the radial end face will cause turbulent flow at the air inlet of the fan, resulting in a decrease in fan efficiency and an increase in noise. In this embodiment, the radius of the top of the conical section is 7.5 mm, the diameter of the bottom surface of the conical section is 40 mm, and the connection between the conical section and the cylindrical section is a circular arc transition, and the entire conical surface is smoothly transitioned to ensure smooth air flow; The tuyere gradually expands, and the highest point of the conical section is 6.6mm away from the smallest area of the air inlet of the fan, so as to prevent the conical section from affecting the air inlet area. After setting in this way, it can effectively reduce the influence of the end face of the boss 54 on the air intake of the fan, increase the air volume at the inlet of the blade slot, reduce the turbulent flow at the air inlet of the fan, and thereby improve the efficiency of the fan.

Based on the above structure, as shown in Figure 4 and Figure 5, the top of the impeller assembly 5 is provided with a bracket cover 7, and the top of the bracket cover 7 is provided with an air duct cover 8, the air duct cover 8 extends into the filter device 10 for connection. Wherein, the air channel cover plate 8 mainly plays the role of connecting the first end fan 20 and the second end fan 30 with the filter device 10 respectively. During assembly, the air channel cover plate 8 is first installed on the two ends of the filter device 10 , and then the rest of the components are installed on the air duct cover plate 8. The bracket cover plate 7 is located between the fan assembly and the air duct cover plate 8, and mainly plays the role of sealing the air intake space of the impeller body, so that the air flow can only flow into the impeller body from the guide cone to both sides, and from between the blades. flow out. Further, the side of the fan assembly is also provided with a wiring opening, and an air duct wire cover plate 6 is arranged at the wiring opening.

In summary, the air purifier of the present utility model is improved in many aspects such as the blade form, the diversion cone structure on the end face of the boss where the motor assembly is installed, the shock absorption of soft materials, and the double air outlet form, so as to effectively Increase air volume and reduce noise.

The technical principles of the present utility model have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the utility model, and cannot be construed as limiting the protection scope of the utility model in any way. Based on the explanations herein, those skilled in the art can think of other specific implementations of the present utility model without creative work, and these forms will all fall within the protection scope of the present utility model.

Claims (10)

1. A kind of air purifier is characterized in that, comprises cylindrical filtering device (10), and the two ends of described filtering device (10) are respectively connected with cylindrical first end blower fan (20) and second end fan (30), the first end fan (20) and the second end fan (30) have the same structure, the first end fan (20) and the second end fan ( 30) Symmetrically arranged, the air flow enters the filter device (10) from the outside and is filtered by the filter device (10), and then enters the first end fan (20) and the second end fan ( 30), and are simultaneously discharged outwards by the first end fan (20) and the second end fan (30). 2. The air purifier according to claim 1, characterized in that, both the first end fan (20) and the second end fan (30) include an end cover with a cylindrical shape and an open end (1), and the fan assembly installed in the end cover (1) through the opening, a soft material (3) is arranged between the end cover (1) and the fan assembly to absorb the Vibration of the fan assembly. 3. The air cleaner according to claim 2, characterized in that, the inside of the end cover (1) is provided with an annular step (11), and the fan assembly includes a circular air duct bottom plate (2), The outer periphery of the air channel bottom plate (2) is covered with the soft material (3), and the soft material (3) is built on the step (11). 4. The air cleaner according to claim 3, characterized in that, the fan assembly further comprises an impeller assembly (5) arranged above the air channel bottom plate (2), and the impeller assembly (5) comprises an impeller The main body (51), the mounting ring (52) and some blades (53) arranged on the top of the impeller body (51), the impeller body (51) protrudes upwards with a boss (54), and the blades (53 ) is connected between the impeller body (51) and the mounting ring (52) and is distributed centrifugally outward around the outer circumference of the boss (54), any adjacent two air inlets of the blades (53) ( 55) the distance between is less than the distance between the air outlets (56). 5. The air cleaner according to claim 4, characterized in that, the blade (53) comprises a blade connection section (531) and a blade body (532), and the blade connection section (531) is away from the boss (54) and connected to the mounting ring (52), and the blade body (532) is close to the boss (54). 6. The air cleaner according to claim 5, characterized in that, the blade connecting section (531) and the blade body (532) are arranged in opposite directions, and the blade connecting section (531) and the blade The junction of the body (532) forms an included angle, the blade body (532) is curved, and the bending direction of the blade body (532) faces the side where the boss (54) is located. 7. The air cleaner according to any one of claims 4-6, characterized in that, the boss (54) is provided with a motor installation groove (91), and the motor installation groove (91) is installed with A motor assembly (4), the top of the air duct bottom plate (2) protrudes upwards with a column, the motor assembly (4) is installed on the column, and the motor assembly (4) can drive the impeller assembly ( 5) Let it rotate along the central axis. 8. The air cleaner according to any one of claims 4-6, characterized in that, the top of the boss (54) is conical, and the air flow passes through the conical surface of the boss (54) to transition to the between the blades (53) from the air inlet (55) to the air outlet (56). 9. The air cleaner according to any one of claims 4-6, characterized in that a bracket cover (7) is provided above the impeller assembly (5), and the top of the bracket cover (7) An air duct cover plate (8) is provided, and the air duct cover plate (8) extends into the filter device (10) for connection. 10. The air cleaner according to any one of claims 1-3, characterized in that, the filter device (10) comprises a semicircular rear cover (101) and a front cover (105), the rear cover (101) and the front cover (105) are interlocked to form a circular cavity, and a semicircular arc-shaped bracket (102) is arranged in the cavity, and a Hypa component (104) is accommodated in the bracket (102) ), the front cover (105) has a gap, the Hypa assembly (104) is installed in the cavity from the gap, the front door cover (106) is installed in the gap, the front door cover A front door (108) is connected to the plate (106) through a front door locking block (107).