CN221122462U

CN221122462U - Air purifier

Info

Publication number: CN221122462U
Application number: CN202322719901.3U
Authority: CN
Inventors: 苏众; 林三龙; 石秋波
Original assignee: Leedarson Lighting Co Ltd
Current assignee: Leedarson Lighting Co Ltd
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2024-06-11
Anticipated expiration: 2033-10-10

Abstract

The utility model provides an air purifier, which belongs to the technical field of air purification and comprises a wind wheel assembly and an air quality sensor, wherein the wind wheel assembly comprises an air duct and a wind wheel arranged on the negative pressure side of the air duct, the air duct is provided with an air inlet, and the side of the air inlet is provided with an air entraining hole communicated with the positive pressure side of the air duct; the air quality sensor is arranged on the negative pressure side of the air duct, and is close to the air introducing hole or communicated with the air introducing hole through the air introducing pipe. According to the air purifier provided by the utility model, the air pressure difference formed by the running of the wind wheel is directly utilized, and the wind wheel is not required to be additionally arranged, so that the manufacturing cost of the air purifier is reduced; on the other hand, the problem of occupying the internal space of the air purifier is avoided; the sensitivity of data collection is improved, the delay of data collection of the air quality sensor is avoided, and the reliability of data analysis results is improved.

Description

Air purifier

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to an air purifier.

Background

Air quality sensors attached to air purifiers are divided into two types: active and passive. The active air quality sensor is provided with a small wind wheel, so that air in the environment can be actively sucked into the air quality sensor for analysis; the passive air quality sensor has no wind wheel, and the pollutants in the air are freely diffused into the air quality sensor for analysis. Two air cleaners have the following defects:

The active air quality sensor is adopted, so that the manufacturing cost of the air purifier is increased, a certain space is occupied by the installation of the small wind wheel, and the size of the air purifier is larger.

The passive air quality sensor analyzes by means of free air diffusion, and has the problems of insensitive data acquisition and large analysis result error.

Disclosure of utility model

The embodiment of the utility model provides an air purifier, which aims to solve the defects of two air quality sensors adopted at present.

In order to achieve the above purpose, the utility model adopts the following technical scheme: provided is an air cleaner including: the wind wheel assembly comprises an air duct and a wind wheel arranged on the negative pressure side of the air duct, an air inlet is arranged on the air duct, and an air entraining hole communicated with the positive pressure side of the air duct is arranged beside the air inlet; the air quality sensor is arranged on the negative pressure side of the air duct, and is close to the air bleed hole or communicated with the air bleed hole through an air bleed pipe.

In one implementation, the gas-introducing tube is a bent tube.

In one implementation, the air conditioner further comprises a rear shell connected to the negative pressure side of the air duct, the rear shell and the air duct form an air flow channel, and the air quality sensor is installed in the rear shell.

In one implementation, an exhaust hole is provided on the rear case at a position facing the air quality sensor detection hole.

In one implementation, the air quality sensor is mounted on a side wall of the rear housing, and the exhaust hole is provided on the side wall of the rear housing.

In one implementation, the air duct further comprises a front shell connected to the positive pressure side of the air duct, and an air cleaning assembly mounted within the front shell.

In one implementation, the air purification assembly comprises a primary filtering unit, a secondary filtering unit and a tertiary adsorption unit which are sequentially stacked, wherein the tertiary adsorption unit is close to the air duct, a plug-in column plug-in with the front shell is arranged on the primary filtering unit, and a plug-in hole for adapting to the plug-in column is formed in the front shell.

In one implementation, the front shell is fixed on the rear shell through a bolt, a first threaded column for fixing the air duct is arranged on the rear shell, and a first threaded hole is formed in the first threaded column.

In one implementation, the air duct is fixedly arranged on the rear shell through a bolt, a second threaded column for fixing the air duct is arranged on the rear shell, and a second threaded hole is formed in the second threaded column.

Compared with the prior art, the air purifier provided by the utility model has the beneficial effects that: the air-entraining holes communicated with the positive pressure side and the negative pressure side are formed in the air duct, the air quality sensor is arranged at the side of the air-entraining holes, and air quality is analyzed through the air-entraining holes in the process that air in the external environment is sucked into the air duct by utilizing air pressure difference generated during operation of the wind wheel.

Compared with an active air quality sensor, the air purifier directly utilizes the air pressure difference formed by the running of the wind wheel, and the wind wheel is not required to be additionally arranged, so that the manufacturing cost of the air purifier is reduced; on the other hand, the problem of occupying the inner space of the air purifier is avoided, the size of the air purifier is prevented from being increased, and the miniaturization and the intensification of the air purifier are facilitated.

Compared with a passive air quality sensor, the air pressure difference formed by the running of the wind wheel is utilized, the air pressure difference between the inner side and the outer side generated by the suction force of the wind wheel is utilized, the air is guided into the air quality sensor for analysis, and the air enters the air quality sensor in a mode of freely diffusing the air, so that the sensitivity of data collection is improved, the delay of data collection of the air quality sensor is avoided, and the reliability of a data analysis result is improved.

Drawings

FIG. 1 is a schematic diagram of an explosion structure of an air purifier according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an air purifier according to an embodiment of the present utility model with a front housing removed and an air purifying assembly removed (front view, positive pressure side);

FIG. 3 is a schematic diagram of the layout structure of the air quality sensor and the air intake pipe in the air purifier according to the embodiment of the present utility model (rear view, negative pressure side);

FIG. 4 is a schematic diagram of the layout structure of the air quality sensor and the air intake pipe in the air purifier provided in FIG. 3 (front view, positive pressure side);

FIG. 5 is a schematic perspective view of an air quality sensor and bleed air pipe according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of an exploded structure of an air quality sensor and bleed air duct provided by an embodiment of the present utility model;

Fig. 7 is a schematic three-dimensional structure of a rear housing according to an embodiment of the present utility model;

fig. 8 is a schematic diagram of a three-dimensional structure of a rear housing according to an embodiment of the present utility model;

fig. 9 is a schematic perspective view of an air purifier according to an embodiment of the present utility model;

FIG. 10 is a graph showing a comparison of an air purifier according to an embodiment of the present utility model;

Reference numerals illustrate:

1. A first stage filtration unit; 101. a plug-in column; 2. a secondary filtering unit; 3. a three-stage filtration unit; 4. a front shell; 401. a plug hole; 5. an air duct; 501. an air vent; 502. an air inlet; 6. an air quality sensor; 7. an air-introducing pipe; 8. a wind wheel; 9. a bottom cover assembly; 10. a top cover assembly; 11. a rear case; 111. a first threaded post; 112. a second threaded post; 113. and an exhaust hole.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, the front case refers to a side on which the air purifying assembly is mounted, and corresponds to a positive pressure side; the rear housing is intended to be the side on which the wind rotor is mounted for ease of description and simplicity of description only, and is not intended to indicate or imply that the devices or elements referred to must have, be constructed and operated in a particular orientation and therefore should not be construed as limiting the utility model.

Referring to fig. 1 to 9 together, an air purifier provided by the present utility model will now be described. The air purifier comprises a wind wheel assembly and an air quality sensor 6, wherein the wind wheel assembly comprises an air duct 5 and a wind wheel 8 arranged on the negative pressure side of the air duct 5, an air inlet 502 is arranged on the air duct 5, and an air entraining hole 501 communicated with the positive pressure side of the air duct 5 is arranged beside the air inlet; the air quality sensor 6 is installed on the negative pressure side of the air duct 5, and the air quality sensor 6 is close to the air vent 501 or is communicated with the air vent 501 through the air vent 7.

When the air quality sensor 6 is installed close to the air introduction hole 501, the air introduction pipe 7 is not required, and air can flow into the detection hole of the air quality sensor 6 due to the effect of negative pressure.

Compared with the prior art, the air purifier provided by the utility model has the beneficial effects that: the air-entraining holes 501 for communicating the positive pressure side and the negative pressure side are arranged on the air duct 5, the air quality sensor 6 is arranged beside the air-entraining holes 501, and air quality is analyzed by the air pressure difference generated during operation of the wind wheel 8 when air in the external environment is sucked into the air duct 5 and flows through the air quality sensor 6 through the air-entraining holes 501.

Compared with the active air quality sensor 6, the air pressure difference formed by directly utilizing the running of the wind wheel 8 does not need to additionally arrange the wind wheel 8, so that the manufacturing cost of the air purifier is reduced; on the other hand, the problem of occupying the inner space of the air purifier is avoided, the size of the air purifier is prevented from being increased, and the miniaturization and the intensification of the air purifier are facilitated.

Compared with the passive air quality sensor 6, the air pressure difference formed by the running of the wind wheel 8 is utilized, the air pressure difference between the inner side and the outer side generated by the suction of the wind wheel 8 is utilized, the air is led into the air quality sensor 6 for analysis, compared with the free diffusion mode of the air, the air enters the air quality sensor 6, the sensitivity of data collection is improved, the delay of data collection of the air quality sensor 6 is avoided, and the reliability of data analysis results is improved.

It should be noted that, in this embodiment, the air quality sensor 6 with a detection hole is adopted, and the bleed hole 501 matching with the negative pressure principle improves the sensitivity of data acquisition, and the verification process is as follows: two air purifiers (one with an air vent and one without an air vent) of the same model are taken and placed in a test cabin, and a professional instrument (TSI 8530) is arranged in the test cabin to monitor the concentration of pollutants in the cabin. When the contaminant concentration begins to decrease, the sensor readings with bleed holes 501 begin to decrease after about a2 minute delay, while the sensor readings without bleed holes 501 begin to decrease after a 4 minute delay (as shown in FIG. 10). The air purifier provided by the utility model is verified, and the data acquisition is high in sensitivity.

As shown in fig. 10, the abscissa is the purge duration, and the ordinate is the ratio between the measured contaminant concentration and the initial value; TSI8530 is a standard instrument and measured as the concentration of environmental pollutants.

The presence of an aperture (i.e., the present utility model) and the absence of an aperture represent test values for an air quality sensor installed in an air purifier in two different conditions. The initial values of the ordinate in the graph are all 1, which indicates that the concentration of pollutants in a stable environment can be accurately measured with or without open pores.

The open cell curves in the graph are closer to the standard curve than the non-open cell curves, indicating that the sensor is more sensitive in the "open cell" state as the environmental contaminant concentration changes.

In some embodiments, as shown in fig. 5 and 6, the bleed air duct 7 is an elbow. If the air introducing hole 501 is coaxial with the detection hole of the air quality sensor 6, a straight pipe is adopted; if the air introduction hole 501 is not coaxial with the detection hole of the air quality sensor 6, an elbow is required to introduce air into the detection hole.

The air purifier provided by the utility model further comprises a rear shell 11, wherein the rear shell 11 is connected to the negative pressure side of the air duct 5, the rear shell 11 and the air duct 5 form an air flow channel, and the air quality sensor 6 is arranged in the rear shell 11.

Optionally, the air quality sensor 6 is mounted on the rear wall or on the side wall of the rear housing 11.

In some embodiments, as shown in fig. 7 and 8, an exhaust hole 113 is provided on the rear case 11 at a position facing the detection hole of the air quality sensor 6. The air that has been bleed air to the air quality sensor 6 can be discharged to the outside atmosphere via the exhaust opening 113.

In some embodiments, as shown in fig. 7 and 8, the air quality sensor 6 is mounted on a side wall of the rear case 11, and the exhaust hole 113 is provided on the side wall of the rear case 11. At this time, the bleed holes 501 are arranged perpendicular to the detection holes of the air quality sensor 6, and therefore the bleed pipe 7 needs to be provided as an elbow.

The air purifier provided by the utility model, as shown in fig. 1 and 9, further comprises a front shell 4 and an air purifying component, wherein the front shell 4 is connected to the positive pressure side of the air duct 5, and the air purifying component is arranged in the front shell 4. The air purification assembly purifies the air, and the air quality sensor 6 analyzes the purified air, so that the purification effect of the air purifier can be analyzed.

In some embodiments, as shown in fig. 1 and 9, the air purifying assembly includes a primary filtering unit 1, a secondary filtering unit 2 and a tertiary adsorption unit that are sequentially stacked, wherein the tertiary adsorption unit is close to the air duct 5, the primary filtering unit 1 is provided with a plug post 101 that is plugged with a front shell 4, and the front shell 4 is provided with a plug hole 401 that is adapted to the plug post 101.

When the air purification component is assembled, the three-stage filtering unit 3 is firstly arranged in the front shell 4, then the two-stage filtering unit 2 is arranged in the front shell 4, and then the first-stage adsorption unit is inserted into the front shell 4, so that the air purification component can be assembled in the front shell 4.

The filter screen with larger meshes is arranged at the 1-position of the primary filter unit and is used for preliminarily filtering larger pollutants such as hair, scraps and the like in the air; the secondary filter unit 2 is a HEPA component and is used for purifying small particle dust in the air; the three-stage adsorption unit is an active carbon component and is used for purifying small gaseous pollutants in the air.

HEPA modules are used mainly to trap particulate dust above 0.5 μm and various suspended matter.

In some embodiments, as shown in fig. 1 to 4, 7 and 8, the front case 4 is fixed to the rear case 11 by bolts, the rear case 11 is provided with a first screw post 111 for fixing the air duct 5, and the first screw post 111 is provided with a first screw hole.

In some embodiments, as shown in fig. 1 to 4, 7 and 8, the air duct 5 is fixed on the rear housing 11 by bolts, a second threaded post 112 for fixing the air duct 5 is provided on the rear housing 11, and a second threaded hole is provided on the second threaded post 112.

The front shell 4 and the rear shell 11 are fixed by adopting a mode of constructing a threaded column, so that the screwed length of the bolt is increased, and the connection firmness between the parts is ensured.

The air purifier provided by the utility model, as shown in fig. 1 and 9, further comprises a top cover assembly 10 arranged on the rear shell 11, the air duct 5 and the front shell 4, and a bottom cover assembly 9 arranged below the rear shell 11, the air duct 5 and the front shell 4; the power strip assembly is mounted within the rear housing 11 assembly. The power panel assembly is used for converting input high-voltage alternating current into low-voltage direct current.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. An air purifier, comprising:

The wind wheel assembly comprises an air duct (5) and a wind wheel (8) arranged on the negative pressure side of the air duct (5), an air inlet is arranged on the air duct (5), and an air entraining hole (501) communicated with the positive pressure side of the air duct (5) is arranged beside the air inlet; and

The air quality sensor (6) is arranged on the negative pressure side of the air duct (5), and the air quality sensor (6) is close to the air entraining hole (501) or is communicated with the air entraining hole (501) through an air entraining pipe (7).

2. An air cleaner as claimed in claim 1, characterized in that the bleed air duct (7) is an elbow.

3. The air cleaner of claim 1, further comprising a rear housing (11), the rear housing (11) being connected to the negative pressure side of the air duct (5), the rear housing (11) and the air duct (5) forming a passage for air flow, the air quality sensor (6) being mounted within the rear housing (11).

4. An air cleaner according to claim 3, wherein the rear housing (11) is provided with an exhaust hole (113) at a position facing the detection hole of the air quality sensor (6).

5. An air cleaner according to claim 4, wherein the air quality sensor (6) is mounted on a side wall of the rear case (11), and the air discharge hole (113) is provided on a side wall of the rear case (11).

6. An air cleaner according to claim 3, further comprising a front housing (4) and an air cleaning assembly, the front housing (4) being connected to the positive pressure side of the air duct (5), the air cleaning assembly being mounted in the front housing (4).

7. The air purifier as recited in claim 6, wherein the air purifying assembly comprises a primary filter unit (1), a secondary filter unit (2) and a tertiary adsorption unit which are sequentially stacked, wherein the tertiary adsorption unit is close to the air duct (5), a plug-in column (101) plugged with the front shell (4) is arranged on the primary filter unit (1), and a plug-in hole (401) for adapting to the plug-in column (101) is arranged on the front shell (4).

8. The air purifier as recited in claim 6, characterized in that the front housing (4) is fixed to the rear housing (11) by bolts, a first threaded column (111) for fixing the air duct (5) is provided on the rear housing (11), and a first threaded hole is provided on the first threaded column (111).

9. An air cleaner according to claim 3, wherein the air duct (5) is fixedly arranged on the rear housing (11) by bolts, a second threaded column (112) for fixing the air duct (5) is arranged on the rear housing (11), and a second threaded hole is arranged on the second threaded column (112).