CN113465082A

CN113465082A - Electrostatic adsorption device and air cleaner comprising same

Info

Publication number: CN113465082A
Application number: CN202010243312.0A
Authority: CN
Inventors: 徐逸
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2021-10-01

Abstract

An electrostatic adsorption device comprises a high voltage group, a low voltage group and a voltage generator, wherein the low voltage group and the high voltage group are arranged adjacently and are not in direct contact with each other, and the voltage output to the high voltage group by the voltage generator is greater than the voltage output to the low voltage group. The plurality of first electrode plates of the high-voltage group are arranged along a first direction at a first interval, the plurality of second electrode plates of the low-voltage group are arranged along a second direction at a second interval, and the second interval is smaller than the first interval. The electrostatic adsorption device is arranged in the air cleaner, most suspended particles in the air can be filtered, the particles adsorbed on the filter screen in the air cleaner are reduced, the service life of the filter screen is prolonged, the environment is protected, and the material cost is saved.

Description

Electrostatic adsorption device and air cleaner comprising same

Technical Field

The present invention relates to an apparatus for purifying air; in particular to an air cleaner with an electrostatic adsorption device.

Background

With the change of times, excessive suspended particles are scattered in the air due to a great amount of activities of people, and the suspended particles are easily adsorbed on the surface of the skin of a human body or enter the lung, so that physiological diseases of people are caused. In order to maintain the air quality of the activity environment, people can carry the mask outdoors, and an air purifier is required to be additionally arranged indoors, so that suspended particles, bacteria and viruses in indoor air can be filtered by the air purifier, the indoor air is kept clean, harmful substances are prevented from entering the human body, and the physiological health of people can be maintained.

The conventional air cleaner generally includes a housing, at least one filter, and a fan, the housing has an air inlet and an air outlet, and the filter and the fan are disposed in the housing. When the fan started, the air got into the casing from the income wind gap, and the air can be earlier through the filter screen, and the filter screen can adsorb the suspended particle in the air, and then, the air after being purified will leave inside the casing from the air outlet, reaches the effect of maintaining indoor air quality. However, after the filter screen is used for a certain period of time, the filter screen is prone to reduce the gaps of the filter holes due to the attachment of suspended particles, dust, oil smoke and other substances to the periphery of the filter holes, and the air filtering capacity begins to decrease. Therefore, it is necessary to replace the filter periodically, but the cost of purchasing a new filter is not small and the used filter must be discarded, which increases the burden on the environment.

Disclosure of Invention

In view of the above, the present invention is directed to an electrostatic adsorption device and an air cleaner, in which the service life of a filter screen of the air cleaner having the electrostatic adsorption device can be prolonged.

In order to achieve the above object, the present invention provides an electrostatic chuck device, which comprises a high voltage set, a low voltage set and a voltage generator. The high-voltage group comprises a plurality of first electrode plates which are arranged at intervals along a first direction, a first interval is formed between every two adjacent first electrode plates, and each first interval is between 0.5 cm and 5 cm; the low voltage group and the high voltage group are arranged adjacently, and the high voltage group and the low voltage group are not in direct contact with each other, the low voltage group comprises a plurality of second electrode plates which are arranged at intervals along a second direction, a second distance is formed between every two adjacent second electrode plates, the second distance is between 0.2 cm and 1.5 cm, and the second distance is smaller than the first distance; the voltage generator is electrically connected with the high voltage group and the low voltage group, and the voltage output by the voltage generator for the high voltage group is greater than the voltage output for the low voltage group.

Another objective of the present invention is to provide an air cleaner for filtering suspended particles in air, which comprises a housing, the electrostatic adsorption device, an ultraviolet lamp, and a first filter. The shell is internally provided with an accommodating space and comprises an air inlet and an air outlet, and the air inlet and the air outlet are respectively communicated with the outside of the shell and the accommodating space; the electrostatic adsorption device is arranged in the accommodating space, and compared with the low voltage group, the high voltage group of the electrostatic adsorption device is closer to the air inlet; the ultraviolet lamps are arranged in the accommodating space, and the low-voltage group is closer to the ultraviolet lamps than the high-voltage group; and the first filter screen is arranged in the accommodating space and is positioned between the air outlet and the electrostatic adsorption device.

The effect of the present invention is that the electrostatic adsorption device can prolong the service time of the filter screen of the air cleaner. The first interval of the high-voltage group and the second interval of the low-voltage group are designed, suspended particles pass through the first electrode plates to become charged particles and are adsorbed on the surfaces of the second electrode plates in a free mode, most of the suspended particles in the air are successfully filtered, only a few suspended particles need to be purified through the first filter screen, the effect of prolonging the service life of the first filter screen is achieved, and the electrostatic adsorption device can be reused after adsorbed substances are washed away, so that the environmental protection benefit is greatly met.

Drawings

FIG. 1 is a schematic view of an air cleaner according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a front view of fig. 1.

Fig. 4 is a sectional view taken in the direction 4-4 of fig. 3.

Detailed Description

In order to more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Referring to fig. 1 and 2, an air cleaner 100 according to a preferred embodiment of the present invention includes a housing 10, a baffle 20, an electrostatic adsorption device 30, an ultraviolet lamp 40, a first filter 50, a second filter 60, and a fan 70.

The housing 10 has a side plate 12 and a body 14, the side plate 12 is detachable relative to the body 14, and the body 14 has an accommodating space S therein. The housing 10 includes an air inlet 10a and an air outlet 10b, the air inlet 10a is disposed at a lower side of the side plate 12, the air outlet 10b is disposed at a top surface of the housing 10, and the air inlet 10a and the air outlet 10b are respectively communicated with an exterior of the housing 10 and an accommodating space S inside the housing 10. The baffle 20 is disposed in the accommodating space S and divides the accommodating space S into a first space S1 and a second space S2 (refer to fig. 3), the baffle 20 and the body 14 of the housing 10 together form an opening 10c, and the opening 10c communicates the first space S1 and the second space S2.

The electrostatic adsorption device 30 is disposed in the first space S1 of the accommodating space S, the electrostatic adsorption device 30 includes a high voltage group 32 and a low voltage group 34 disposed adjacently, and a voltage generator 36 is electrically connected to the high voltage group 32 and the low voltage group 34. The high voltage set 32 and the low voltage set 34 are respectively connected to the inner bottom surface of the body 14 by a support frame 38, and the high voltage set 32 and the low voltage set 34 are not in direct contact with each other. The high voltage group 32 is closer to the air inlet 10a than the low voltage group 34, and the low voltage group 34 is closer to the opening 10c than the high voltage group 32.

Referring to fig. 4 again, the high voltage group 32 includes a plurality of first electrode pads 321, the plurality of first electrode pads 321 are arranged at intervals along a first direction X1, a first distance D1 is provided between two adjacent first electrode pads 321, and each first distance D1 is between 0.5 cm and 5 cm; preferably, each of the first distances D1 is between 1 cm and 3 cm. The range of the first distance D1 is designed such that, if the first distance D1 is less than 0.5 cm, the distance between the first electrode plates 321 is too close and then a high voltage is applied, which may cause the first electrode plates 321 to overheat or generate fire when the suspended particles pass through the first electrode plates 321 after becoming charged particles, which may cause the high voltage group 32 to be damaged; if the first distance D1 is greater than 5 cm, a large amount of air will pass through the gaps between the first electrode plates 321 per unit time, and it is not ensured that most of the suspended particles in the air are charged by high voltage, and the electrostatic effect is poor. The low voltage group 34 includes a plurality of second electrode pads 341, and the second electrode pads 341 are arranged at intervals along a second direction X2, in this embodiment, the first direction X1 is parallel to the second direction X2. A second distance D2 is formed between two adjacent second electrode pads 341, the second distance is between 0.2 cm and 1.5 cm, and the second distance is smaller than the first distance; preferably, each of the second distances D2 is between 0.3 cm and 0.7 cm. The second distance D2 is designed to have a value range such that, if the second distance D2 is less than 0.2 cm, the amount of air passing through the gaps between the second electrode sheets 341 per unit time is too small, which results in a low air purification efficiency of the electrostatic adsorption device 30; if the second distance D2 is greater than 1.5 cm, the air is too large to effectively adsorb all the charged particles on the surfaces of the second electrode plates 341 due to the gaps between the second electrode plates 341, resulting in poor dust collecting effect of the electrostatic adsorbing device 30. Further, the shape of each of the first electrode pads 321 is the same, the shape of each of the second electrode pads 341 is the same, and the area of each of the first electrode pads 321 is smaller than the area of each of the second electrode pads 341, however, the size and the shape of the plurality of first electrode pads 321 and the plurality of second electrode pads 341 may be adjusted according to different applications, and is not limited thereto.

The voltage generator 36 is disposed at one side of the high voltage group 32 and the low voltage group 34, and the voltage generator 36 provides different voltage values for the high voltage group 32 and the low voltage group 34, respectively, wherein the voltage of the high voltage group 32 is greater than the voltage of the low voltage group 34. In the present invention, the voltage value of each of the first electrode sheets 321 is between 2500 volts and 6000 volts, and the voltage value of each of the second electrode sheets 341 is between 1250 volts and 3000 volts; preferably, the voltage value of each of the first electrode pieces 321 is between 3000 volts and 5000 volts, and the voltage value of each of the second electrode pieces 341 is between 1500 volts and 2500 volts. The floating particles in the air pass through the gaps between the first electrode sheets 321 of the high voltage group 32, become charged particles after receiving the voltage of the high voltage group 32, move from the high voltage group 32 to the low voltage group 34, adhere to the surfaces of the second electrode sheets 341 of the low voltage group 34, and the air without the charged particles passes through the gaps between the second electrode sheets 341 of the low voltage group 34 and leaves the electrostatic adsorption device 30.

In accordance with the aforementioned design, if the first distance D1 between the first electrode plates 321 is reduced (e.g. from 1.0 cm to 0.5 cm), and the originally provided high voltage value is added to the first electrode plates 321 (e.g. 3000 volts is provided to the first electrode plates 321 spaced from each other by the first distance D1 of 1.0 cm), the first electrode plates 321 are easily overheated due to over-high power, or the high voltage group 32 is damaged due to the generation of fire when the suspended particles pass through the first electrode plates 321 after becoming charged particles, and the voltage value is reduced (e.g. from 3000 volts to 2500 volts) to avoid the situation that the high voltage group 32 is damaged due to over-high power, so the first distance D1 is reduced, and the voltage value of the configured high voltage group 32 needs to be reduced. If the first distance D1 is increased (e.g., from 1 cm to 5 cm), the amount of air passing through the gaps between the first electrode plates 321 per unit time is increased, and the originally provided high voltage value is applied to the first electrode plates 321 (e.g., 3000 volts is applied to the first electrode plates 321 spaced apart from each other by the first distance D1 of 1 cm), the originally provided high voltage value generates an electric field which is insufficient to make most of the airborne particles become charged particles, i.e., the airborne particles directly pass through the high voltage group 32, so that the electrostatic polarization effect is not improved, and the same electrostatic polarization effect can be maintained by increasing the voltage value (e.g., from 3000 volts to 6000 volts), so that the first distance D1 is increased, and the voltage value of the allocated high voltage group 32 needs to be increased.

If the second distance D2 of the second electrode pads 341 is decreased (e.g., from 0.5 cm to 0.2 cm), and the originally provided low voltage value is added to the second electrode pads 341 (e.g., 2000 v is provided to the second electrode pads 341 spaced from each other by the second distance D2 of 0.5 cm), the first electrode pad 321 is easily overheated or glowing, which may cause damage to the low voltage set 34, and the decrease of the voltage value (e.g., from 2000 v to 1250 v) may avoid the situation that the power is too high to damage the low voltage set 34 or consume too much energy, so the second distance D2 is decreased and the voltage value of the configured low voltage set 34 is decreased. If the second distance D2 is increased (e.g., from 0.5 cm to 1.5 cm), and the originally provided low voltage value is applied to the second electrode pads 341 (e.g., 2000 v is applied to the second electrode pads 341 spaced from each other by the second distance D2 of 0.5 cm), the electric field is too small to effectively adsorb all the charged particles on the surfaces of the second electrode pads 341, so that the charged particles in the air easily pass through the gaps between the second electrode pads 341, the dust collecting effect of the electrostatic adsorbing device 30 is not good, and the voltage value is increased (e.g., from 2000 v to 3000 v) to effectively adsorb the charged particles, so the second distance D2 is increased, and the voltage value of the configured low voltage group 34 needs to be increased.

The above-mentioned distance value and voltage value are within the preferred range defined by the present invention, and all have the advantages of energy saving, safe use and excellent air-purifying effect. In practical applications, the air purifying amount of the electrostatic adsorption device 30 per unit time can be estimated according to the space (such as the number of environmental levels) of the air purifier provided by the embodiment of the present invention, so as to design the electrostatic adsorption device 30 to have a suitable size, and the distance and number between the high-voltage and low-voltage electrode plates, and configure the voltage value within the voltage range of the present invention, so as to achieve a sufficient air purifying effect.

The ultraviolet lamp 40 is disposed in the first space S1 of the accommodating space S, and the ultraviolet lamp 40 is disposed on the inner wall of the casing 10 near one side of the low voltage set 34 and corresponds to the gaps between the first electrode sheets 321. The ultraviolet lamp 40 is used to destroy microorganisms (such as bacteria or viruses) in the accommodating space S, so as to achieve the effect of killing the bacteria and viruses.

The first filter 50 is disposed in the second space S2 of the accommodating space S, between the air outlet 10b and the electrostatic adsorption device 30, and above the baffle 20. The first filter screen 50 has a component of nano silver ions, and can effectively filter fine dust, and has the functions of antibiosis and mould prevention. In the embodiment of the present invention, the first filter 50 may be, for example, a HEPA filter (High-Efficiency Air filter), but is not limited thereto.

The second filter 60 is disposed in the second space S2 of the accommodating space S and located between the air outlet 10b and the first filter 50, and the second filter 60 has active carbon components for removing odor and harmful gases. In the embodiment of the present invention, the second screen 60 may be, for example, an activated carbon screen, but is not limited thereto.

The fan 70 is disposed in the second space S2 of the accommodating space S and close to the air outlet 10b, and the fan 70 is used for sucking the air in the accommodating space S, sucking the air outside the air cleaner 100 into the accommodating space S from the air inlet 10a, and discharging the air in the accommodating space S out of the air cleaner 100 through the air outlet 10 b.

The air filtering method according to the above structure will be described below. As shown in fig. 3 and 4, when the fan 70 starts to operate, the fan 70 sucks air into the accommodating space S from the air inlet 10a, when the air passes through the electrostatic adsorption device 30, suspended particles in the air first pass through gaps between the first electrode plates 321 of the high voltage group 32, and become charged particles under the voltage of the high voltage group 32, the charged particles move from the high voltage group 32 to the low voltage group 34, the charged particles are adsorbed on the surfaces of the second electrode plates 341 of the low voltage group 34, and the air without charged particles passes through gaps between the second electrode plates 341 of the low voltage group 34 and leaves the electrostatic adsorption device 30. Then, the air passes through the ultraviolet light, and moves from the first space S1 to the second space S2 through the opening 10c beside the baffle 20, and passes through the first filter 50 and the second filter 60 in sequence to achieve the air purifying effects of sterilization, deodorization, etc., and the purified air is discharged from the air outlet 10b to the accommodating space S.

In addition to the above components, the air cleaner 100 of the present embodiment further includes a third filter 80 disposed in the first space S1 of the accommodating space S and located between the high voltage set 32 and the air inlet 10 a. The filtering aperture of the third filter screen 80 is larger than that of the first filter screen 50, and is used for preliminarily filtering larger substances in the air, such as hair balls or small stones, so as to effectively prevent the electrostatic adsorption device 30 from being damaged by the larger substances, and also prevent the high voltage group 32 and the low voltage group 34 from generating short circuit, thereby avoiding the occurrence of electrical fire.

The advantages of the air cleaner 100 are summarized. The electrostatic adsorption device 30 of the air cleaner 100 can filter most of the suspended particles in the air, and adsorb the suspended particles to the surface of the second electrode sheet 341 of the low voltage group 34, and the electrostatic adsorption device 30 is then cleaned periodically, so that the air cleaner can be reused. In accordance with the above, the electrostatic adsorption device 30 adsorbs most of the suspended particles, so as to reduce the suspended particles adsorbed on the first filter 50 and the second filter 60, and the first filter 50 and the second filter 60 have a prolonged service life, thereby providing environmental protection and reducing the cost of replacing the filters. In addition, as the distance between the electrode plates of each voltage set in the electrostatic adsorption device 30 is designed, the electrostatic adsorption device 30 is not bulky and heavy, so that the overall air cleaner 100 is prevented from being too large in volume, easy to store and small in space; the distance between the electrode plates is designed by matching with the voltage value, so that the electrostatic adsorption device 30 has the best effect of adsorbing the suspended particles and has the characteristic of energy saving.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications to the present invention as described and claimed should be included in the scope of the present invention.

Description of the reference numerals

[ invention ]

100: air cleaner

10: shell body

10 a: air inlet

10 b: air outlet

10 c: opening of the container

12: side plate

14: body

20: baffle plate

30: electrostatic adsorption device

32: high voltage group

321: first electrode sheet

34: low voltage group

341: second electrode sheet

36: voltage generator

38: supporting frame

40: ultraviolet lamp

50: first filter screen

60: second filter screen

70: fan blower

80: third filter screen

S: containing space

S1: the first space

S2: second space

X1: a first direction

X2: second direction

D1: first interval

D2: second pitch

Claims

1. An electrostatic adsorption device, comprising:

a high voltage group including a plurality of first electrode sheets, the plurality of first electrode sheets being arranged at intervals along a first direction, a first distance being provided between adjacent ones of the plurality of first electrode sheets, each of the first distances being between 0.5 cm and 5 cm;

a low voltage group, the low voltage group and the high voltage group being disposed adjacent to each other and the high voltage group and the low voltage group not directly contacting each other, the low voltage group including a plurality of second electrode sheets, the plurality of second electrode sheets being arranged at intervals along a second direction, a second distance being provided between two adjacent second electrode sheets, the second distance being between 0.2 cm and 1.5 cm, the second distance being smaller than the first distance; and

and the voltage generator is electrically connected with the high voltage group and the low voltage group, and the voltage output by the voltage generator for the high voltage group is greater than the voltage output for the low voltage group.

2. The electrostatic adsorption device of claim 1, wherein each of said first spacings is between 1 cm and 3 cm; each of the second pitches is between 0.3 cm and 0.7 cm.

3. The electrostatic adsorption device of claim 2, wherein each said first electrode pad has a voltage between 2500 volts and 6000 volts; the voltage of each second electrode plate is between 1250 volts and 3000 volts.

4. The electrostatic adsorption device of claim 1, wherein the first direction is parallel to the second direction.

5. An air cleaner for filtering particles suspended in air, comprising:

the air inlet and the air outlet are respectively communicated with the outside of the shell and the accommodating space;

the electrostatic adsorption device of any of claims 1 to 4, disposed in the housing space, the high voltage group of the electrostatic adsorption device being closer to the air inlet than the low voltage group;

an ultraviolet lamp disposed in the accommodating space, the low voltage group being closer to the ultraviolet lamp than the high voltage group; and

and the first filter screen is arranged in the accommodating space and is positioned between the air outlet and the electrostatic adsorption device.

6. The air cleaner of claim 5, comprising a baffle disposed in the housing and dividing the housing into a first space and a second space in communication with each other, the electrostatic adsorption device being disposed in the first space, the first filter being disposed in the second space, the baffle and the housing together forming an opening, the low voltage set being closer to the opening than the high voltage set.

7. The air cleaner of claim 6, comprising a second filter disposed in the second space of the accommodating space, the second filter having a component of activated carbon; the first screen has a composition of silver ions.

8. The air cleaner of claim 6, comprising a blower disposed in the second space of the accommodating space and adjacent to the air outlet, the blower being configured to draw air in the accommodating space, such that air outside the air cleaner enters the accommodating space through the air inlet and exits the air cleaner through the air outlet.

9. The air cleaner of claim 5, wherein the air inlet is open on a lower side of a side surface of the housing, and the air outlet is open on a top surface of the housing.

10. The air cleaner of claim 5, comprising a third filter disposed in the first space of the accommodating space and adjacent to the air inlet, wherein a filter aperture of the third filter is larger than a filter aperture of the first filter.