CN116202176A - Air purifier - Google Patents

Abstract

The present invention relates to the technical field of air purification, in particular to an air purifier, comprising: a housing with an air inlet and an air outlet; At least one inner membrane module on the inner side of the ring-shaped membrane module, the ring-shaped membrane module and the inner membrane module are suitable for air to pass through its side wall and filter, and the inside of the inner membrane module forms a filter channel with a top opening , the periphery of the filter channel forms an ash channel with a bottom opening; a sonic cleaner is arranged in the housing for removing pollutants on the annular membrane assembly and the inner membrane assembly, to The contaminants are allowed to fall through the ash drop channel.

Description

air purifier

technical field

The invention relates to the technical field of air purification, in particular to an air purifier.

Background technique

With the rapid development of my country's economy, people have higher and higher requirements for the indoor office and living environment, and have extremely high requirements for indoor air quality. At present, the indoor air is mainly purified through composite air purifiers to improve the office environment and living environment. Purifying the air through composite air purification technology can effectively improve the efficiency of air purification, and the air purification technology mainly focuses on: Utilize high-efficiency physical filtration such as HEPA filter and activated carbon to adsorb particulate pollutants suspended in the air, and generate relatively strong oxidizing free radicals to remove toxic or harmful gases through chemical methods, such as hydrogen peroxide technology, plasma technology and photocatalytic technology, etc. .

However, when the particulate pollutants in the air are filtered by activated carbon, filter screen and other purification technologies, the pollutants will be enriched on the surface of the filter device, causing the wind resistance of the filter device to gradually increase and the filtration efficiency to decrease. Therefore, the filter device needs to be replaced regularly , large consumables.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to overcome the defect that the air purifier in the prior art requires regular replacement of the filter device resulting in large consumables, thereby providing an air purifier that does not require frequent replacement of the filter device.

In order to solve the above-mentioned technical problems, the present invention provides an air cleaner, comprising: a casing with an air inlet and an air outlet; a filter device arranged in the casing, including an annular membrane assembly and an At least one inner membrane module on the inner side of the ring-shaped membrane module, the ring-shaped membrane module and the inner membrane module are suitable for air to pass through its side wall and filter, and the inside of the inner membrane module forms a filter channel with a top opening , the periphery of the filter channel forms an ash-falling channel with a bottom opening; a sonic soot cleaner, arranged in the housing, is used to remove pollutants on the annular membrane module and the inner membrane module, to The contaminants are allowed to fall through the ash drop channel.

Optionally, the internal membrane modules are arranged in multiple rows, each row has a plurality of the internal membrane modules, and one of the internal membrane modules in any row is arranged with any two internal membrane modules in an adjacent row into a triangle.

Optionally, the annular membrane module includes a first membrane layer and a first support layer, and the inner membrane module includes a second membrane layer and a second support layer.

Optionally, both the first film layer and the second film layer are made of Al ₂ O ₃ , and both the first support layer and the second support layer are made of SiC.

Optionally, the air purifier further includes a hollow support column, the support column is arranged in the housing and supported below the filtering device, and the air inlet is directly opposite to the outer surface of the support column , There are gaps between the support column and the filter device and the side wall of the housing, and the top periphery of the filter device is in sealing connection with the side wall of the housing.

Optionally, the outer surface and inner surface of the support column are smooth curved surfaces.

Optionally, the support column includes at least a main support section, the main support section is connected to the filter device, the outer diameter of the main support section gradually decreases from top to bottom, and the bottom of the housing is provided with a The ash tray on the periphery of the main support section.

Optionally, the inner wall of the annular membrane module is provided with a dust concentration sensor, and the air cleaner also includes a controller, the controller is connected in communication with the dust concentration sensor, and can be detected by the dust concentration sensor When the dust concentration is higher than the first preset value, the sonic dust cleaner is controlled to work.

Optionally, an air duct connecting the top of the filter device and the air outlet is also provided in the housing, the air duct includes a first pipe section close to the filter device, and a first pipe section is provided in the first pipe section. An ultraviolet lamp, the first ultraviolet lamp can emit ultraviolet light with a wavelength of 253.7nm for sterilization.

Optionally, the air duct also includes an intermediate pipe section arranged downstream of the first pipe section, the intermediate pipe section is provided with a second ultraviolet lamp and a titanium dioxide catalytic layer, and the second ultraviolet lamp can emit light with a wavelength of 185nm. ultraviolet light, and cooperate with the titanium dioxide catalyst layer to generate ozone for decomposing organic gases.

Optionally, the air duct further includes a second pipe section disposed downstream of the intermediate pipe section, the second pipe section is provided with a third ultraviolet lamp, and the third ultraviolet lamp can emit ultraviolet light with a wavelength of 253.7nm , for absorbing the ozone escaping from the intermediate pipe section.

Optionally, a first formaldehyde detection device is provided in the first pipe section, and the controller is communicatively connected with the first formaldehyde detection device and the second ultraviolet lamp. When the formaldehyde concentration detected by the device is greater than a second preset value, the second ultraviolet lamp is controlled to work.

Optionally, a first ozone detection device is provided downstream of the intermediate pipe section, and the controller is connected in communication with the first ozone detection device and the third ultraviolet lamp. When the ozone concentration detected by the ozone detection device is higher than the third preset value, the power of the third ultraviolet lamp is controlled to increase.

Optionally, a second formaldehyde detection device and a second ozone detection device are provided downstream of the second pipe section, and the controller communicates with the second formaldehyde detection device and the second ozone detection device, and according to the The formaldehyde concentration detected by the second formaldehyde detection device controls the power of the second ultraviolet lamp, and the power of the third ultraviolet lamp is controlled according to the ozone concentration detected by the second ozone detection device.

Optionally, the middle pipe section is a horizontal pipe, and the first pipe section includes at least a closing connection section, a first vertical pipe section and a first elbow section from bottom to bottom, and the inner diameter of the closing connection section gradually decreases from bottom to top and/or, the second pipe section sequentially includes a second bent pipe section and a second vertical section from bottom to top.

The technical solution of the present invention has the following advantages:

In the air purifier provided by the present invention, when the air purifier is in operation, the air enters the interior of the casing through the air inlet, and after flowing around the filter device, it passes through the annular membrane module and the inner membrane module sequentially in the radial direction for filtration. The large particles of pollutants will be attached to the annular membrane module and the inner membrane module, and the filtered air will flow from the top opening to the air outlet after passing through the filter channel. When there are many pollutants attached to the annular membrane module and the internal membrane module, the sonic dust cleaner can work, and the sonic dust cleaner emits a specific low frequency (100-250Hz), high-energy sound wave to act on the annular membrane module and the interior On the surface of the membrane module, the pollutants attached to the surface will naturally fall off under the harmonic vibration of the sound wave and flow out from the bottom opening through the ash channel, so the pollutants attached to the annular membrane module and the internal membrane module can be removed, so that The ring-shaped membrane module and the internal membrane module are kept unblocked to ensure the air purification efficiency, and the filter material does not need to be replaced frequently, so that the air purification efficiency can be maximized while the consumables are minimized.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

Fig. 1 is the sectional view of the air cleaner provided in the embodiment of the present invention;

Fig. 2 is a top view of the filtering device shown in Fig. 1;

FIG. 3 is an enlarged view of A in FIG. 2 .

Explanation of reference signs:

1. Shell; 2. Air inlet; 3. Filtration device; 31. Annular membrane module; 311. First membrane layer; 312. First support layer; 32. Internal membrane module; 321. Second membrane layer; 322 , second support layer; 33, connector; 34, bottom opening; 35, top opening; 4, sonic cleaner; 5, support column; 6, ash tray; 7, dust concentration sensor; 8, first pipe ; 81, closing connection section; 82, the first vertical pipe section; 83, the first elbow section; 9, the second pipe section; 91, the second elbow section; 92, the second vertical section; 10, the middle pipe section; 11. The first ultraviolet lamp; 12. The second ultraviolet lamp; 13. The third ultraviolet lamp; 14. Titanium dioxide catalytic layer; 15. The first formaldehyde detection device; 16. The first ozone detection device; 17. The second formaldehyde detection device ; 18, the second ozone detection device.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

Example

With the rapid development of my country's economy, people have higher and higher requirements for the indoor office and living environment, and have extremely high requirements for indoor air quality. At present, the indoor air is mainly purified through composite air purifiers to improve the office environment and living environment. Purifying the air through composite air purification technology can effectively improve the efficiency of air purification, and the air purification technology mainly focuses on: Utilize high-efficiency physical filtration such as HEPA filter and activated carbon to adsorb particulate pollutants suspended in the air, and generate relatively strong oxidizing free radicals to remove toxic or harmful gases through chemical methods, such as hydrogen peroxide technology, plasma technology and photocatalytic technology, etc. .

However, when the particulate pollutants in the air are filtered by activated carbon, filter screen and other purification technologies, the pollutants will be enriched on the surface of the filter device, causing the wind resistance of the filter device to gradually increase and the filtration efficiency to decrease. Therefore, the filter device needs to be replaced regularly , large consumables.

Pollutants, peculiar smells and odors in the air can be efficiently and thoroughly decomposed by chemical methods, but if the chemical substances that decompose the pollutants and the harmful substances produced during the decomposition process are not properly handled, these substances will have a relatively large impact on the human body. Impact. For example, too high concentration of hydrogen peroxide will cause greater irritation to the skin, mucous membranes and eyes of the human body. Sterilization and disinfection by plasma technology or photocatalytic technology will inevitably produce a certain amount of ozone, and high concentration of ozone will Stimulate the human respiratory tract, causing major hazards such as dyspnea and decreased lung function.

Therefore, this embodiment provides an air cleaner.

In one embodiment, as shown in FIGS. 1 to 3 , the air cleaner includes a housing 1 , a filter device 3 and a sonic cleaner 4 . Wherein, the housing 1 has an air inlet 2 and an air outlet; the filter device 3 is arranged in the housing 1, including an annular membrane assembly 31 and at least one inner membrane assembly 32 arranged inside the annular membrane assembly 31, the annular membrane assembly 31 and the inner membrane assembly 32 are all suitable for air to pass through its side wall and filter, the inside of the inner membrane assembly 32 forms a filter channel with a top opening 35, and the periphery of the filter channel forms a dust falling channel with a bottom opening 34; The ash container 4 is arranged in the casing 1, and is used for removing pollutants on the annular membrane module 31 and the inner membrane module 32, so that the pollutants fall through the ash-falling channel.

In this embodiment, when the air purifier is working, the air enters the interior of the housing 1 through the air inlet 2, and after flowing around the filter device 3, it passes through the annular membrane module 31 and the inner membrane module 32 sequentially in the radial direction for filtration. , the large particle pollutants in the air will be attached to the outside of the annular membrane module 31 and the inner membrane module 32, and the filtered air will flow from the top opening 35 to the air outlet after passing through the filter channel. When there are many pollutants attached to the annular membrane module 31 and the inner membrane module 32, the sonic cleaner 4 can be operated, and the sonic cleaner 4 emits a specific low-frequency (100-250Hz), high-energy sound wave to act on the annular On the surface of the membrane module 31 and the inner membrane module 32, the pollutants attached to the surface will naturally fall off under the harmonic vibration of the sound wave and flow out from the bottom opening 34 through the ash falling channel, so the pollutants attached to the annular membrane module 31 and the inside can be removed The pollutants on the membrane module 32 keep the annular membrane module 31 and the inner membrane module 32 in a smooth state, ensuring the air purification efficiency, and do not need to replace the filter material frequently, so that the air purification efficiency can be maximized while the consumables are minimized .

Specifically, when only one internal membrane assembly 32 is provided, the top of the annular membrane assembly 31 and the top of the internal membrane assembly 32 are closed and connected through the connector 33; when multiple internal membrane assemblies 32 are provided, the top of the annular membrane assembly 31 The top and the top of the inner membrane module 32 and the tops of the two adjacent inner membrane modules 32 are closed and connected by a connector 33, and the bottom of the filter device 3 is provided with a bottom opening 34 at a position facing the connector 33, and the inner membrane module The top end of 32 has a top opening 35 which is in fluid communication with the air outlet.

It should be noted that the top end of the inner membrane module 32 is open and the lower end is closed, which can prevent the dust and bacteria on the lower side of the filter device 3 from sucking back and mixing with the air filtered by the inner membrane module 32 to cause secondary pollution.

In a preferred embodiment, as shown in FIG. 1 , the sonic cleaner 4 is fixed on the casing 1 and connected to the annular membrane assembly 31 .

It should be noted that the air cleaner includes a fan to guide the flow of air. The fan is not shown in FIG. 1 , and those skilled in the art can reasonably set the position of the fan according to the technical solution of the present application.

It should be noted that the material of the connecting member 33 may be selected so that air cannot pass through, such as injection molding material ABS, PLA, and the like.

As shown in FIG. 1 , the air inlet 2 is located on the peripheral wall of the casing 1 and close to the bottom, so as to realize air intake from all sides.

On the basis of the above-described embodiment, in a preferred embodiment, the internal membrane modules 32 are provided with multiple rows, and each row has a plurality of internal membrane modules 32, and one of the internal membrane modules 32 in any row is connected to the adjacent row. Any two internal membrane modules 32 are arranged in a triangle. In this embodiment, by arranging one of the inner membrane modules 32 in any row and any two inner membrane modules 32 in the adjacent row in a triangular shape, each inner membrane module 32 can be arranged compactly, and can be arranged more compactly under the same area. A plurality of internal membrane components 32, so that the internal membrane components 32 can be used to purify the air to the greatest extent.

In a preferred embodiment, as shown in FIG. 2 , one of the inner membrane modules 32 in any row is arranged in an equilateral arrangement with the two inner membrane modules 32 adjacent to the inner membrane module 32 in the adjacent row. triangle.

On the basis of the above embodiments, in a preferred embodiment, the annular membrane assembly 31 includes a first membrane layer 311 and a first support layer 312, and the inner membrane assembly 32 includes a second membrane layer 321 and a second support layer 322 . In this embodiment, the setting of the first supporting layer 312 can ensure the hardness of the annular membrane assembly 31, thereby maintaining the shape of the annular membrane assembly 31, and the setting of the second supporting layer 322 can ensure the hardness of the inner membrane assembly 32, thereby The shape of the inner membrane module 32 is maintained, and the connection between the inner membrane module 32 and the ring-shaped membrane module 31 and the inner membrane module 32 is facilitated through the connecting piece 33 .

Specifically, in one embodiment, the first support layer 312 is located inside the first film layer 311 , and the second support layer 322 is located inside the second film layer 321 .

On the basis of the above embodiment, in a preferred embodiment, both the first film layer 311 and the second film layer 321 are made of Al ₂ O ₃ , and the first support layer 312 and the second support layer 322 are both made of SiC production. In this embodiment, the filtering device 3 is an inorganic ceramic membrane as a whole, which facilitates the shedding of pollutants attached thereon when the sonic cleaner 4 is working.

Specifically, in one embodiment, the overall thickness of the annular membrane module 31 is 2.5mm-3mm, the pore diameter of the micropores on the first support layer 312 is 35μm-40μm, the thickness of the first membrane layer 311 is 10μm, and the first membrane layer 311 The pore diameter of the upper micropore is 5 μm; the overall thickness of the inner membrane component 32 is 0.8 mm-1 mm, the pore diameter of the micropore on the second support layer 322 is 8 μm-10 μm, the thickness of the second membrane layer 321 is 5 μm, the second membrane layer 321 The diameter of the upper micropore is 2 μm. The aperture of the second supporting layer 322 micropores is smaller than the aperture of the first supporting layer 312 micropores, and the aperture of the second membrane layer 321 micropores is smaller than the aperture of the first membrane layer 311 micropores, so after filtering through the annular membrane module 31, it will be Filtration is further performed through the inner membrane module 32 .

On the basis of the above-mentioned embodiment, in a preferred embodiment, the air cleaner also includes a hollow support column 5, the support column 5 is arranged in the housing 1 and supported below the filter device 3, the air inlet 2 and the support The outer surface of the column 5 faces directly, there is a gap between the support column 5 and the filter device 3 and the side wall of the housing 1 , and the top periphery of the filter device 3 is in sealing connection with the side wall of the housing 1 . In this embodiment, when the air enters from the air inlet 2, the large particles will collide with the outer surface of the support column 5, and under the action of inertia, the dust will slide down along the outer surface of the support column 5, mixed with The air of the fallen small particles of pollutants and bacteria will continue to flow upward. When it reaches the outside of the annular membrane module 31, the air will not continue to flow upward because the top periphery of the filter device 3 is sealed with the side wall of the housing 1 , but pass through the annular membrane module 31 and the inner membrane module 32 sequentially in the radial direction to filter, the large particle pollutants in the air will be attached outside the annular membrane module 31 and the inner membrane module 32, and the filtered air will pass through the The top opening 35 flows to the air outlet. After the air passes through the inner membrane assembly 32, the particle pollutants larger than 2 μm in the air will be filtered out. Since the support column 5 is a hollow structure, when the sonic cleaner 4 is working, the pollutants attached to the surface of the annular membrane module 31 and the inner membrane module 32 will naturally fall off under the harmonic vibration of the sound wave and go downward from the bottom opening 34 Fall and go through support pillar 5.

On the basis of the above embodiments, in a preferred embodiment, the outer surface and the inner surface of the support column 5 are smooth curved surfaces. In this embodiment, by making the outer surface and inner surface of the support column 5 smooth and curved, when the particle pollutants hit the outer surface of the support column 5, they can slide down smoothly along the outer surface of the support column 5, and when the sonic cleaning When the filter 4 is working, when the pollutants falling from the bottom opening 34 of the filtering device 3 collide with the inner surface of the support column 5, they can smoothly slide down along the inner surface of the support column 5.

On the basis of the above embodiments, in a preferred embodiment, the support column 5 includes at least a main support section, which is connected to the filter device 3 , and the outer diameter of the main support section decreases gradually from top to bottom. In this embodiment, by making the outer diameter of the main supporting section gradually decrease from top to bottom, it is more favorable for particle pollutants to slide down along the surface of the supporting column 5 . At the same time, the space occupied by the support column 5 in the casing 1 is small, which is beneficial to smooth air intake.

It should be noted that the support column 5 may only include the main support section, or may include the main support section and a column section below the main support section, wherein the outer diameter of the column section gradually increases or remains unchanged from top to bottom.

On the basis of the above embodiments, in a preferred embodiment, the housing 1 is provided with an ash tray 6 located on the periphery of the main support section. In this embodiment, the ash receiving tray 6 can receive particulate pollutants that slide down from the outer surface and inner side of the support column 5 .

In a preferred embodiment, the ash receiving tray 6 is detachably connected to the housing 1, so that the ash receiving tray 6 can be disassembled from the housing 1 for cleaning. In an alternative embodiment, the ash receiving tray 6 is hinged to the housing 1, and the ash receiving tray 6 can be rotated downward to clean it.

On the basis of the above-described embodiment, in a preferred embodiment, the inner wall of the annular membrane assembly 31 is provided with a dust concentration sensor 7, and the air cleaner also includes a controller, which is connected in communication with the dust concentration sensor 7, and can be When the dust concentration sensor 7 detects that the dust concentration is higher than the first preset value, the sonic dust cleaner 4 is controlled to work. In this embodiment, by setting the dust concentration sensor 7 and the controller, when the dust concentration sensor 7 detects that the dust concentration is higher than the first preset value, that is, when a certain amount of dust is accumulated on the surface of the annular membrane module 31, the controller automatically Controlling the work of the sonic dust cleaner 4 does not require additional operations by the user, which can further enhance the user experience. Wherein, the first preset value may specifically be 10 mg/m ³ .

On the basis of the above-mentioned embodiments, in a preferred embodiment, an air duct connecting the top of the filter device 3 and the air outlet is also provided in the housing 1, the air duct includes a first pipe section 8 close to the filter device, the first pipe section A first ultraviolet lamp 11 is arranged inside, and the first ultraviolet lamp 11 can emit ultraviolet light with a wavelength of 253.7nm for sterilization. In this embodiment, by arranging the first pipe section 8 and the first ultraviolet lamp 11 inside the first pipe section 8 , bacteria and odors in the air filtered by the filter device 3 can be further efficiently sterilized and removed.

On the basis of the above embodiment, in a preferred embodiment, the air duct also includes an intermediate pipe section 10 arranged downstream of the first pipe section 8, and the intermediate pipe section 10 is provided with a second ultraviolet lamp 12 and a titanium dioxide catalytic layer 14 , the second ultraviolet lamp 12 can emit ultraviolet light with a wavelength of 185nm, and cooperate with the titanium dioxide catalyst layer 14 to generate ozone for decomposing organic gases. In this embodiment, the intermediate pipe section 10 forms an ozone oxidation chamber to decompose H ₂ O and O ₂ in the air into free radicals with strong oxidizing power, and then generate O ₃ , and use O ₃ to remove formaldehyde, benzene, etc. in the air Gas pollutants, in addition, ozone can react with odorous gases such as ammonia, hydrogen sulfide and sulfide alcohol, which can effectively remove the peculiar smell in the air, and coat the pipe wall of the intermediate pipe section 10 with a titanium dioxide catalytic layer 14 , can accelerate the decomposition of volatile organic gas molecules in the air by ozone.

On the basis of the above embodiment, in a preferred embodiment, the air duct further includes a second pipe section disposed downstream of the intermediate pipe section, the second pipe section is provided with a third ultraviolet lamp, and the third ultraviolet lamp The lamp can emit ultraviolet light with a wavelength of 253.7nm for absorbing the ozone escaping from the intermediate pipe section. In this embodiment, the ultraviolet light emitted by the first ultraviolet lamp 11 is easily absorbed by the DNA of the organism, changing the DNA structure in the organism, thereby effectively killing the bacteria in the air; the second ultraviolet lamp 12 is set at The middle pipe section 10 makes the middle pipe section 10 form an ozone oxidation chamber, decomposes _H2O and _O2 in the air into free radicals with strong oxidizing power, and then generates _O3 , and uses _O3 to remove formaldehyde, benzene and other gases in the air Pollutants, in addition, ozone can react with odorous gases such as ammonia, hydrogen sulfide and sulfide alcohol, which can effectively remove the peculiar smell in the air; the ultraviolet light emitted by the third ultraviolet lamp 13 can absorb the incomplete reaction O ₃ , to ensure that the ozone content in the air finally discharged out of the air purifier is low.

Specifically, in one embodiment, both the first ultraviolet lamp 11 and the third ultraviolet lamp 13 are hemispherical.

On the basis of the above-mentioned embodiment, in a preferred embodiment, the first formaldehyde detection device 15 is arranged in the first pipe section 8, the controller communicates with the first formaldehyde detection device 15 and the second ultraviolet lamp 12, and the controller When the formaldehyde concentration detected by the first formaldehyde detection device 15 is greater than the second preset value, the second ultraviolet lamp 12 can be controlled to work. In this embodiment, by setting the first formaldehyde detection device 15, the controller communicates with the first formaldehyde detection device 15 and the second ultraviolet lamp 12. When the formaldehyde concentration detected by the first formaldehyde detection device 15 is greater than the second preset value, the controller automatically controls the second ultraviolet lamp 12 to work to generate O ₃ with a corresponding concentration to kill formaldehyde.

Specifically, in one embodiment, the second preset value is 0.08 mg/m ³ .

On the basis of the above-described embodiment, in a preferred embodiment, the downstream of the intermediate pipe section 10 is provided with a first ozone detection device 16, and the controller communicates with the first ozone detection device 16 and the third ultraviolet lamp 13, and the controller When the ozone concentration detected by the first ozone detection device 16 is higher than the third preset value, the power of the third ultraviolet lamp 13 can be controlled to increase. In this embodiment, the first ozone detection device 16 is used to detect the _O3 concentration after the ozone oxidation chamber treatment, and when the detected _O3 concentration is higher than the third preset value, the power of the third ultraviolet lamp 13 is controlled Increase to ensure that the _O3 concentration in the exhaust air meets the standard.

Specifically, in one embodiment, the third preset value is 0.10 mg/m ³ .

On the basis of the above-described embodiment, in a preferred embodiment, the downstream of the second pipe section 9 is provided with a second formaldehyde detection device 17, a second ozone detection device 18, and the controller communicates with the second formaldehyde detection device 17, the second The ozone detection device 18 is connected in communication, and controls the power of the second ultraviolet lamp 12 according to the formaldehyde concentration detected by the second formaldehyde detection device 17, and controls the third ultraviolet lamp 13 according to the ozone concentration detected by the second ozone detection device 18 power. In this embodiment, by installing a second formaldehyde detection device 17 and a second ozone detection device 18 downstream of the second pipe section 9, when the exhaust gas does not meet the requirements, the first ultraviolet lamp 11 and the second ultraviolet lamp can be controlled and adjusted. 12. The power of the third ultraviolet lamp 13 is to ensure that the exhaust gas meets the requirements.

On the basis of the above embodiments, in a preferred embodiment, the middle pipe section 10 is a horizontal pipe, and the first pipe section 8 includes at least a closing connection section 81, a first vertical pipe section 82 and a first bent pipe section 83 from bottom to bottom. , the inner diameter of the closing connection section 81 gradually decreases from bottom to top; and/or, the second pipe section 9 sequentially includes a second curved pipe section 91 and a second vertical section 92 from bottom to top, and the top of the second vertical section 92 is an outlet At or near the air outlet. In this embodiment, the setting of the closing connection section 81 can increase the wind speed, and the setting of the first curved pipe section 83 and the second curved pipe section 91 prolongs the path of air flow, so as to fully purify the air and ensure the air purification effect.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (15)

1. An air purifier, characterized in that, comprising: The housing (1) has an air inlet (2) and an air outlet; The filter device (3), arranged in the casing (1), includes an annular membrane assembly (31) and at least one inner membrane assembly (32) arranged inside the annular membrane assembly (31), the The annular membrane module (31) and the inner membrane module (32) are suitable for air to pass through its side wall and filter, and the inside of the inner membrane module (32) forms a filter channel with a top opening (35), The periphery of the filtering channel forms an ash-falling channel with a bottom opening (34); A sonic soot cleaner (4), arranged in the housing (1), used to remove pollutants on the annular membrane assembly (31) and the internal membrane assembly (32), so that the pollution Objects fall through the ash channel. 2. The air cleaner according to claim 1, characterized in that, the internal membrane assembly (32) is provided with multiple rows, and each row has a plurality of internal membrane assemblies (32), any row of which One inner membrane module (32) and any two inner membrane modules (32) in adjacent rows are arranged in a triangle. 3. The air cleaner according to claim 1, characterized in that, the annular membrane assembly (31) comprises a first membrane layer (311) and a first support layer (312), and the inner membrane assembly (32 ) includes a second film layer (321) and a second support layer (322). 4. The air purifier according to claim 3, characterized in that, the first film layer (311) and the second film layer (321) are made of Al ₂ O ₃ , and the first support Both layer (312) and said second support layer (322) are made of SiC. 5. The air purifier according to any one of claims 1-4, characterized in that, the air purifier further comprises a hollow support column (5), and the support column (5) is arranged on the shell Body (1) and supported below the filter device (3), the air inlet (2) is facing the outer surface of the support column (5), the support column (5) and the filter There is a gap between the device (3) and the side wall of the casing (1), and the top periphery of the filtering device (3) is sealed and connected with the side wall of the casing (1). 6. The air cleaner according to claim 5, characterized in that, the outer surface and the inner surface of the support column (5) are smooth curved surfaces. 7. The air cleaner according to claim 5, characterized in that, the support column (5) at least comprises a main support section, the main support section is connected with the filter device (3), and the main support section The outer diameter of the casing (1) gradually decreases from top to bottom, and the bottom of the casing (1) is provided with an ash tray (6) located on the periphery of the main support section. 8. The air purifier according to any one of claims 1-4, characterized in that, the inner wall of the annular membrane module (31) is provided with a dust concentration sensor (7), and the air purifier also includes A controller, the controller is connected in communication with the dust concentration sensor (7), capable of controlling the sonic dust cleaner ( 4) work. 9. The air cleaner according to claim 8, characterized in that, the housing (1) is also provided with an air duct connecting the top of the filter device (3) and the air outlet, the air duct Including a first pipe section (8) close to the filter device (3), a first ultraviolet lamp (11) is arranged in the first pipe section (8), and the first ultraviolet lamp (11) can emit a wavelength of 253.7 nm ultraviolet light is used for sterilization. 10. The air cleaner according to claim 9, characterized in that, the air duct further comprises an intermediate pipe section (10) arranged downstream of the first pipe section (8), and the intermediate pipe section (10) is provided with There is a second ultraviolet lamp (12) and a titanium dioxide catalytic layer (14), the second ultraviolet lamp (12) can emit ultraviolet light with a wavelength of 185nm, and cooperate with the titanium dioxide catalytic layer (14) to generate gas of ozone. 11. The air cleaner according to claim 10, characterized in that, the air duct further comprises a second pipe section (9) arranged downstream of the intermediate pipe section (10), and the second pipe section (9) A third ultraviolet lamp (13) is provided, and the third ultraviolet lamp (13) can emit ultraviolet light with a wavelength of 253.7nm for absorbing ozone escaping from the intermediate pipe section (10). 12. The air cleaner according to claim 10, characterized in that, the first formaldehyde detection device (15) is arranged in the first pipe section (8), and the controller and the first formaldehyde detection device ( 15), the second ultraviolet lamp (12) is connected in communication, and the controller can control the second ultraviolet lamp ( 12) work. 13. The air cleaner according to claim 11, characterized in that, the downstream of the intermediate pipe section (10) is provided with a first ozone detection device (16), and the controller and the first ozone detection device ( 16), the third ultraviolet lamp (13) is connected in communication, and the controller can control the third ultraviolet lamp when the ozone concentration detected by the first ozone detection device (16) is higher than the third preset value (13) Power increase. 14. The air cleaner according to claim 11, characterized in that, the downstream of the second pipe section (9) is provided with a second formaldehyde detection device (17), a second ozone detection device (18), and the control The device is communicatively connected with the second formaldehyde detection device (17) and the second ozone detection device (18), and controls the second ultraviolet lamp (12) according to the formaldehyde concentration detected by the second formaldehyde detection device (17) power, and control the power of the third ultraviolet lamp (13) according to the ozone concentration detected by the second ozone detection device (18). 15. The air purifier according to claim 11, characterized in that, the intermediate pipe section (10) is a horizontal pipe, and the first pipe section (8) at least sequentially includes a closing connection section (81), a first vertical pipe section (82) and the first curved pipe section (83), the inner diameter of the closing connection section (81) gradually decreases from bottom to top; and/or, the second pipe section (9) includes the first pipe section from bottom to top Two elbow sections (91) and a second vertical section (92).

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