Air purification device, indoor unit and air conditioner

Abstract

The utility model provides an air purification device, an indoor unit and an air conditioner, the air purification device comprises an adsorption filter screen, the adsorption filter screen is configured to adsorb pollutants in air, a photocatalyst is loaded on the adsorption filter screen, the adsorption filter screen penetrates through a decomposition cabin, the part, located in the decomposition cabin, of the adsorption filter screen is a second area, and the part, located outside the decomposition cabin, of the adsorption filter screen is a first area; air flows through the first area, an ultraviolet lamp is arranged in the decomposition cabin, the ultraviolet lamp is configured to irradiate the second area of the adsorption filter screen so as to decompose pollutants adsorbed on the second area, and the driving part is configured to drive the adsorption filter screen and the decomposition cabin to generate relative motion so as to adjust the action area of the adsorption filter screen and the ultraviolet lamp.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioning, and in particular to an air purification device, an indoor unit and an air conditioner. Background Art

[0002] The air conditioner includes an indoor unit and an outdoor unit. Some indoor units are equipped with air purification devices (such as air purifiers, etc.), which are usually set in the air outlet, return air outlet or internal channel of the indoor unit. The air purification device is configured to process the air flowing through to purify the air. The air purification module usually uses adsorption components to adsorb pollutants in the air, such as volatile organic compounds (VOCs), including toluene, xylene, formaldehyde, alcohols, etc.

[0003] The main materials of the adsorption components are activated carbon, molecular sieves, zeolites, ceramics, etc., all of which are hard structures. In order to reduce the amount of consumables used and the service life of the adsorption materials, when the adsorption materials are used, the adsorption saturated part should be desorbed and regenerated. In order to achieve the functions of adsorption and desorption at the same time, the adsorption materials are generally designed as a circular rotor structure due to the material properties. The rotor-type adsorption components have the following disadvantages:

[0004] (1) The adsorption wheel mainly serves the function of adsorbing VOCs. The adsorbed VOCs need to be desorbed by heating, which consumes a lot of energy.

[0005] (2) The adsorption wheel has a complex structure and is divided into an adsorption zone, a desorption zone, and a cooling zone. It requires the installation of many air duct branches and fire prevention measures. The sealing requirements during the operation of the wheel are also high, resulting in a high equipment failure rate and complicated equipment maintenance.

[0006] (3) Due to its structural shape, it cannot be used for flat air outlets or return air outlets on equipment such as duct machines, resulting in low space utilization.

[0007] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0008] In response to the problems pointed out in the background technology, the utility model proposes an air purification device, an indoor unit and an air conditioner, which load a photocatalyst on a flexible adsorption filter, and utilize the effects of ultraviolet lamps and photocatalysts to directly decompose VOCs adsorbed on the adsorption filter without the need for desorption and post-processing. The utility model has a simple structure, high efficiency, and improves the air purification effect.

[0009] On the one hand, an air purification device and an indoor unit are provided. The air purification device includes an adsorption filter, which is configured to adsorb pollutants in the air. The adsorption filter is loaded with a photocatalyst. The adsorption filter passes through a decomposition chamber. The portion of the adsorption filter located within the decomposition chamber is a second zone, and the portion located outside the decomposition chamber is a first zone. Air flows through the first zone. An ultraviolet lamp is arranged in the decomposition chamber. The ultraviolet lamp is configured to irradiate the second zone of the adsorption filter to decompose the pollutants adsorbed on the second zone. The driving unit is configured to drive relative movement between the adsorption filter and the decomposition chamber to adjust the action area of ​​the adsorption filter and the ultraviolet lamp.

[0010] On the other hand, an indoor unit is provided, comprising a housing, the housing comprising an air outlet, an air return outlet, and a channel, the channel connecting the air outlet and the air return outlet;

[0011] The indoor unit further includes the air purification device as described above, and the air purification device is arranged at at least one of the air outlet, the return air outlet and the passage.

[0012] On the other hand, an air conditioner is provided, comprising an indoor unit and an outdoor unit, wherein the indoor unit is connected to the outdoor unit, and the indoor unit is the indoor unit as described above.

[0013] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 is a structural diagram of an adsorption filter according to some embodiments;

[0016] Figure 2 is a schematic diagram of an adsorption filter material according to some embodiments;

[0017] Figure 3 is a cross-sectional view of a flexible adsorption filter according to some embodiments;

[0018] Figure 4 is another structural diagram of an adsorption filter according to some embodiments;

[0019] Figure 5 is another structural diagram of an adsorption filter according to some embodiments;

[0020] Figure 6is a structural diagram of an air purification device according to some embodiments;

[0021] Figure 7 is a partial structural diagram of an air purification device according to some embodiments;

[0022] Figure 8 is another partial structural diagram of an air purification device according to some embodiments;

[0023] Fig. 9 is another structural diagram of an air purification device according to some embodiments;

[0024] Fig.10 is a structural diagram of an air purification device according to some embodiments;

[0025] Fig.11 is an exploded view of an air purification device according to some embodiments;

[0026] Fig.12 is a partial cross-sectional view of an air purification device according to some embodiments;

[0027] Fig.13 is a structural diagram of a drive shaft according to some embodiments;

[0028] Fig.14 This is a structural diagram of a first side panel according to some embodiments. DETAILED DESCRIPTION

[0029] Some embodiments of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments provided by the present disclosure are within the scope of protection of the present disclosure.

[0030] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0031] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0032] When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

[0033] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0034] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0035] The use of "adapted to" or "configured to" herein is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0036] As used herein, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of variation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0037] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0038] Air purification devices usually use adsorption components to absorb pollutants in the air, such as volatile organic compounds (VOCs). VOCs in the air include toluene, xylene, formaldehyde, alcohols, etc.

[0039] The adsorption components of the air purification device include activated carbon, molecular sieves, zeolites, ceramics and other materials, all of which are rigid materials. In the process of adsorbing pollutants in the air, the adsorption material may reach a state of adsorption saturation. In order to ensure the adsorption effect of the adsorption material, reduce the amount of adsorption material used, and increase the service life of the adsorption material, the air purification device also needs to desorb and regenerate the adsorption saturated part of the adsorption material. In order to achieve the functions of adsorption and desorption of pollutants at the same time, the adsorption material is generally designed as a circular rotor structure due to the rigid properties of the adsorption material. However, the rotor-type adsorption component cannot be applied to flat air outlets or return air outlets on equipment such as duct units, has low adaptability and reduces the space utilization of air-conditioning equipment such as duct units.

[0040] In order to solve the above problems, some embodiments of the present disclosure provide an air conditioner, wherein the indoor unit of the air conditioner is provided with an air purification device. The air purification device uses a flexible adsorption filter as an adsorption material. The flexible adsorption material includes an adsorption area and a regeneration area, and the adsorption area and the regeneration area can be continuously switched, thereby realizing the functions of adsorption and desorption of pollutants. In addition, the flexible adsorption filter can form different usage forms according to different usage spaces. Thereby, the problem that hard adsorption materials cannot rotate in limited spaces, especially in special-shaped spaces, is solved.

[0041] It should be noted that rigidity refers to the physical property that an object deforms after being subjected to force and cannot return to its original shape after the force is lost. Flexibility can be interpreted as flexibility, which is a property of an object relative to rigidity. Flexibility refers to the physical property that an object deforms after being subjected to force and cannot return to its original shape after the force is lost.

[0042] [Air Conditioner]

[0043] Some embodiments of the present disclosure provide an air conditioner.

[0044] The air conditioner performs the air conditioning cycle by using a compressor, condenser, expansion valve and evaporator to form a refrigerant circuit. The air conditioning cycle includes a series of processes involving compression, condensation, expansion and evaporation to cool or heat the indoor space.

[0045] In some embodiments, the air conditioner includes an outdoor unit.

[0046] In some embodiments, the air conditioner further comprises an indoor unit, and the indoor unit is connected to the outdoor unit.

[0047] In some embodiments, the outdoor unit includes a compressor. The compressor is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form a high-pressure refrigerant. The low-temperature and low-pressure refrigerant enters the compressor, is compressed by the compressor into a high-temperature and high-pressure refrigerant gas, and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0048] In some embodiments, the outdoor unit further includes a first heat exchanger (outdoor heat exchanger) configured to perform heat exchange between outdoor air and a refrigerant transmitted in the first heat exchanger.

[0049] In some embodiments, the indoor unit includes a second heat exchanger (indoor heat exchanger) configured to perform heat exchange between indoor air and a refrigerant transmitted in the second heat exchanger.

[0050] In some embodiments, the air conditioner further includes an expansion valve, which may be provided in the indoor unit or the outdoor unit. The expansion valve expands the liquid refrigerant in a high temperature and high pressure state formed by condensation in the condenser into a low pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low temperature and low pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0051] The second heat exchanger and the first heat exchanger are used as a condenser or an evaporator. When the second heat exchanger is used as a condenser, the air conditioner performs a heating mode. When the second heat exchanger is used as an evaporator, the air conditioner performs a cooling mode.

[0052] In some embodiments, the outdoor unit further includes a four-way valve, which is connected to the refrigerant circuit, and the four-way valve is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the air conditioner performs a cooling mode or a heating mode. The refrigeration working principle of the air conditioner includes: the compressor works to make the second heat exchanger (in the indoor unit, the evaporator at this time) in an ultra-low pressure state, the liquid refrigerant in the second heat exchanger evaporates rapidly to absorb heat, the wind blown out by the fan of the indoor unit is cooled by the second heat exchanger coil and becomes cold wind to be blown indoors, the evaporated refrigerant is pressurized by the compressor, and condenses into a liquid under the high pressure environment in the first heat exchanger (in the outdoor unit, the condenser at this time), releasing heat, and dissipating the heat to the atmosphere through the fan of the outdoor unit, so that the cycle achieves the cooling effect.

[0053] The heating working principle of the air conditioner includes: the gaseous refrigerant is pressurized by the compressor, becomes a high-temperature and high-pressure gas, enters the second heat exchanger (the condenser at this time), condenses and liquefies to release heat, becomes a liquid, and heats the indoor air, thereby achieving the purpose of increasing the indoor temperature. The liquid refrigerant is decompressed by the throttling device and enters the first heat exchanger (the evaporator at this time), evaporates and absorbs heat to become a gas, and absorbs heat from the outdoor air (the outdoor air becomes colder), becomes a gaseous refrigerant, and enters the compressor again to start the next cycle.

[0054] [Indoor unit]

[0055] In some embodiments, the indoor unit further comprises a third shell, on which an indoor air outlet and an indoor air return outlet are arranged. An air supply channel is arranged in the third shell, the air supply channel is connected to the indoor air outlet and the indoor air return outlet, and a second heat exchanger and a fan are arranged in the air supply channel.

[0056] Under the action of the fan, the indoor air enters the air supply channel through the indoor return air outlet and exchanges heat with the second heat exchanger. During the heat exchange process, the indoor air temperature rises or falls. The heat-exchanged air then flows into the room through the indoor air outlet, thereby achieving indoor air temperature regulation.

[0057] In some embodiments, the indoor unit further comprises an air purification device, which is arranged at at least one of the indoor air outlet, the indoor air return outlet and the air supply channel. The air purification device is configured to purify the air flowing through to improve the indoor air quality.

[0058] Air purification devices can purify pollutants in the air, such as VOCs. Volatile organic compounds include toluene, xylene, formaldehyde, alcohols, etc.

[0059] [Air purification device]

[0060] In some embodiments, reference Figure 6 The air purification device includes an adsorption filter 110 . Figure 1 FIG. 1 is a structural diagram of an adsorption filter 110. The adsorption filter 110 is configured to adsorb pollutants in the air, such as VOC. The adsorption filter is loaded with a photocatalyst 130.

[0061] The air purification device includes a decomposition cabin 310, and the adsorption filter 110 passes through the decomposition cabin 310. The part of the adsorption filter 110 located in the decomposition cabin 310 is the second zone 160 (regeneration zone), and the part located outside the decomposition cabin 310 is the first zone 150 (adsorption zone), and air flows through the first zone 150.

[0062] The air purification device includes an ultraviolet lamp 610 , which is disposed in the decomposition chamber 310 . The ultraviolet lamp 610 is configured to irradiate the second area 160 of the adsorption filter 110 to decompose the pollutants adsorbed on the second area 160 .

[0063] The air purification device uses ultraviolet light, and utilizes the effects of the ultraviolet lamp 610 and the photocatalyst 130 to directly decompose the VOC adsorbed on the adsorption filter without desorption and post-processing, which is highly efficient and improves the air purification effect.

[0064] The photocatalyst 130 is mainly composed of nano-titanium dioxide and doped with a certain proportion of platinum metal and palladium metal. The photocatalyst 130 is a substance that does not change itself under the irradiation of light but can promote chemical reactions.

[0065] Under the irradiation of ultraviolet light, the photocatalyst 130 can activate the oxygen and moisture adsorbed on the surface of the material, generate free hydroxyl radicals and active oxygen with extremely strong oxidizing ability, and cause an oxidation reaction to completely decompose the VOC adsorbed on the filter into carbon dioxide and water, thereby achieving the regeneration of the adsorption filter 110.

[0066] The air purification device includes a driving unit 1, which is configured to drive relative movement between the adsorption filter 110 and the decomposition chamber 310 to adjust the action area of ​​the adsorption filter 110 and the ultraviolet lamp 610, realize continuous conversion between the first zone 150 and the second zone 160, realize simultaneous online purification and desorption regeneration, and improve the adsorption capacity of the adsorption filter 110.

[0067] In some embodiments, reference Figure 6 The driving unit 1 is configured to drive the adsorption filter 110 to rotate, the adsorption filter 110 circulates through the decomposition chamber 310, the first zone 150 and the second zone 160 are continuously switched, the adsorption filter 110 is regenerated in the decomposition chamber 310, and the adsorption filter 110 is used repeatedly.

[0068] In some embodiments, the driving unit 1 is configured to drive the decomposition chamber 310 to move, change the position of the decomposition chamber 310 acting on the adsorption filter 110, and realize continuous conversion between the first zone 150 and the second zone 160.

[0069] [Adsorption filter of air purification device]

[0070] In some embodiments, the adsorption filter 110 is a flexible adsorption filter. The flexible adsorption filter forms different usage forms according to different usage spaces. Figure 1 or Figure 4 or Figure 5 , which solves the problem that hard adsorption materials cannot be effectively transmitted in limited spaces, especially in special-shaped spaces.

[0071] In some embodiments, the adsorption filter 110 is made of a flexible adsorption material 140. Figure 2 The flexible adsorption material 140 is a porous adsorption material, which may be a flexible adsorption material with high specific surface area and high flexibility, such as activated carbon fiber felt, activated carbon fiber cotton, carbon fiber cloth, etc.

[0072] In some embodiments, the adsorption filter 110 is made by cutting and sewing the flexible adsorption material 140. According to the size of the installation space, the adsorption filter 110 can be made into different shapes and sizes to meet different installation requirements.

[0073] In some embodiments, the ends of the flexible adsorbent material 140 are sewn together to form a closed ring structure. Figure 1 The seam mark of the head and tail seams of the flexible absorbent material 140 is 180.

[0074] The adsorption filter 110 is an annular conveyor belt structure, and the driving device directionally transports the VOC adsorbed thereon, and transports the VOC after adsorption to a predetermined area (such as the decomposition chamber 310) for desorption or decomposition, and this cycle is repeated to achieve the reuse of the adsorption filter.

[0075] In some embodiments, the flexible adsorbent material 140 is a porous material with burrs on the edges and is easily deformed when pulled by external force.

[0076] Therefore, refer to Figure 1 and Figure 3 A reinforcement part 120 is provided at the cross-section edge of the adsorption filter screen 110. The reinforcement part 120 improves the structural strength of the adsorption filter screen 110.

[0077] In some embodiments, a rubber seal is performed at the end edge of the cross section of the adsorption filter 110 to form a reinforcement portion 120 for ease of processing and manufacturing.

[0078] In some embodiments, reference Figure 3 The adsorption filter 110 is provided with reinforcement parts 120 at the two opposite cross-section end edges. The two reinforcement parts 120 are provided to improve the structural strength of the adsorption filter 110 on the one hand, and are used to cooperate with the rotating shaft 230, and the cooperation between the rotating shaft 230 and the reinforcement parts 120 is used to drive the adsorption filter 110 to rotate.

[0079] In some embodiments, reference Figure 1 or Figure 4 or Figure 5 The adsorption filter 110 is arranged around to form a plurality of first zones 150 for contacting the air. The air flows through the plurality of first zones 150 along its flow direction, thereby achieving multiple adsorption of VOCs and improving the air purification effect.

[0080] When the air containing VOC flows through the adsorption filter 110, it first flows through the first layer first zone 150, and the air contacts the windward surface of the first layer first zone 150. The adsorption filter 110 is a microporous adsorption material, and the micropores face different directions, and have micropores facing the windward side and micropores facing the leeward side. A part of the VOC in the air is adsorbed into the micropores facing the windward side and will not easily fall off from the first zone 150, and the remaining VOC that is not adsorbed continues to flow with the air to the windward side of the second layer first zone 150, and the micropores on the second layer first zone 150 facing the windward side perform secondary adsorption on the VOC in the air, and so on, as the air flows through multiple first zones 150 in sequence, multiple adsorption of VOC is achieved, thereby improving the adsorption effect of VOC and improving the air purification effect.

[0081] Since the wind passes through the windward side and the leeward side in opposite directions relative to the adsorption filter 110, the residual VOC can be adsorbed more effectively, thereby improving the adsorption effect.

[0082] In some embodiments, reference Figure 1 or Figure 4 or Figure 5The adsorption filter 110 is in a closed annular structure, so the adsorption filter 110 can rotate cyclically under the drive of the driving unit 1, thereby realizing continuous conversion between the first zone 150 and the second zone 160, realizing simultaneous online purification and desorption regeneration, and improving the adsorption capacity of the adsorption filter 110.

[0083] In some embodiments, reference Figure 1 and Figure 3 The adsorption filter 110 is in a closed ring structure in the shape of a letter "I". The adsorption filter 110 forms two layers of first areas 150, which are recorded as a first area 150A and a second first area 150B. The two layers of first areas 150 extend in a direction perpendicular to the air flow. The two layers of first areas 150 are arranged at intervals along the air flow direction.

[0084] The two first zones 150 are connected in an arc-shaped transition, with one end forming an arc-shaped first end 171 and the other end forming an arc-shaped second end 172. The first end 171 and the second end 172 are configured to cooperate with a driving device to drive the adsorption filter 110 to rotate.

[0085] Reference Figure 6 The air containing VOC flows through the first zone 150A and the second zone 150B in sequence to achieve secondary adsorption of VOC.

[0086] In some embodiments, reference Figure 4 The adsorption filter 110 is a circular closed ring structure, and the air can diffuse from the inside of the circular structure to the outside, or from the outside to the inside.

[0087] In some embodiments, the adsorption filter 110 is in a special-shaped closed ring structure. The adsorption filter 110 is turned under the action of the rotating shaft 230 and bent to form a closed ring structure of different shapes, which increases the contact area between the air and the adsorption filter 110 in a limited space and improves the VOC adsorption effect.

[0088] For example, refer to Figure 5 The adsorption filter 110 is an L-shaped closed ring structure. The air flows from one side of the L-shaped closed ring structure to the other side, and passes through the two layers of the first zone 150 in sequence, thereby improving the VOC adsorption effect.

[0089] In some embodiments, the manufacturing process of the adsorption filter 110 includes the following steps:

[0090] First, according to the VOC treatment efficiency and wind resistance requirements of the adsorption filter, a suitable activated carbon fiber felt is selected, the thickness of the activated carbon fiber felt ranges from 3 to 10 mm, and the selected activated carbon fiber felt is activated at a set temperature (e.g., 1000°C) and a set time (e.g., 30 minutes).

[0091] Then, according to the requirements of the desorption regeneration process, a suitable catalyst, such as a photocatalyst, is selected, the catalysts are mixed in proportion to form a catalyst solution, the activated carbon fiber felt is ultrasonically immersed in the catalyst solution for a set time (eg, 30 minutes), and then taken out and dried.

[0092] Secondly, the activated carbon fiber felt is sintered at a high temperature according to the tolerable temperature of the catalyst, and the activated carbon fiber felt is cooled to form a carbon fiber adsorption material with a catalyst.

[0093] Afterwards, the activated carbon fiber felt is cut according to the required space size requirements, and the ends of the cut activated carbon fiber felt are spliced ​​and sewed to form a splicing seam. Figure 1 , forming a ring-shaped adsorption filter 110.

[0094] Finally, the end faces on both sides of the annular activated carbon fiber felt are packaged by a glue coating machine to form a reinforcement part 120. At this point, the adsorption filter screen 110 is completed.

[0095] [Drive unit of air purification device]

[0096] In some embodiments, reference Figure 5 or Figure 6 The driving unit 1 includes a driving shaft 210 and a driven shaft 220. The driving shaft 210 and the driven shaft 220 are collectively referred to as a rotating shaft 230. The adsorption filter 110 is provided with the driving shaft 210 and the driven shaft 220 at intervals along the rotation direction thereof, and the adsorption filter 110 is wound around the driving shaft 210 and the driven shaft 220.

[0097] Reference Figure 5 The adsorption filter 110 is a special-shaped closed ring structure. The adsorption filter 110 is turned and bent around a plurality of rotating shafts 230. At least one of the rotating shafts 230 is a driving shaft, and the remaining rotating shafts 230 are driven shafts.

[0098] Reference Figure 6 The adsorption filter 110 is in a straight-line closed ring structure, a driving shaft 210 is disposed at one end of the adsorption filter 110 , and a driven shaft 220 is disposed at the other end.

[0099] Reference Fig.13 Two spaced-apart limit platforms 232 are provided in the axial direction of the rotating shaft 230 . The limit platforms 232 extend along the circumference of the rotating shaft 230 and are annular boss structures. The adsorption filter 110 is located between the two limit platforms 232 . The two limit platforms 232 limit the axial position of the adsorption filter 110 .

[0100] The limiting platform 232 contacts the reinforcing portion 120 to drive the adsorption filter screen 110 to rotate.

[0101] In some embodiments, the limiting platform 232 is in contact with the reinforcing portion 120 , and relies on the friction between the two to rotate through the rotating shaft 230 , thereby driving the adsorption filter screen 110 to rotate synchronously.

[0102] In some embodiments, a flexible gear is disposed on the limiting platform 232 , and a flexible rack is correspondingly disposed on the reinforcing portion 120 . The flexible gear is meshed with the flexible rack, and the rotation of the rotating shaft 230 drives the adsorption filter 110 to rotate synchronously.

[0103] [Decomposition chamber of air purification device]

[0104] In some embodiments, reference Figure 6 The adsorption filter 110 circulates through the decomposition chamber 310 under the drive of the driving unit 1 , the portion of the adsorption filter 110 located inside the decomposition chamber 310 is the second zone 160 , the portion outside the decomposition chamber 310 is the first zone 150 , and the air flows through the first zone 150 .

[0105] The decomposition chamber 310 is a closed cavity, and the adsorption filter 110 is regenerated in the decomposition chamber 310 .

[0106] In some embodiments, reference Figure 5 or Figure 6 The adsorption filter screen 110 is in a closed annular structure, and at least one decomposition chamber 310 is arranged along the rotation direction of the closed annular structure, and the closed annular structure circulates through the decomposition chamber 310.

[0107] According to the extension direction of the adsorption filter 110, one decomposition chamber 310 or a plurality of decomposition chambers 310 are provided, and an ultraviolet lamp 610 is provided in the decomposition chamber 310 to improve the regeneration efficiency of the adsorption filter 110, thereby improving the air purification effect.

[0108] In some embodiments, reference Figure 6 The adsorption filter 110 is in a closed ring structure in the shape of a straight line. The adsorption filter 110 forms two layers of first areas 150, which are denoted as the first area 150A and the first area 150B. The two layers of first areas 150 are arranged at intervals along the air flow direction. One end of the two layers of first areas 150 forms an arc-shaped first end 171, and the other end forms an arc-shaped second end 172.

[0109] A closed cabin 320 is disposed on the first end 171 and the second end 172 , respectively. The closed annular structure circulates through the closed cabin 320 . At least one closed cabin 320 is a decomposition cabin 310 to achieve regeneration of the adsorption filter 110 .

[0110] The decomposition chamber 310 and the sealing chamber 320 play a sealing role, preventing the polluted air from flowing directly from the side to the air outlet 460 without passing through the adsorption filter 110, so that the air flowing to the air outlet 460 is all air that has been adsorbed and filtered by the adsorption filter 110.

[0111] In some embodiments, reference Fig. 9 The two closed cabins 320 are both used as decomposition cabins 310, and ultraviolet lamps 610 are arranged in the two closed cabins 320. When the adsorption filter 110 circulates through the two decomposition cabins 310, both ends of the adsorption filter 110 can be regenerated at the same time, thereby improving the regeneration efficiency.

[0112] In some embodiments, according to the difference in VOC concentration between the air inlet and the air outlet, the two ultraviolet lamps 610 in the two decomposition chambers 310 are turned on one by one or simultaneously, thereby ensuring the regeneration efficiency and purification effect while reducing energy consumption.

[0113] [UV Lamp]

[0114] In some embodiments, reference Figure 6 A plurality of ultraviolet lamps 610 are arranged in the decomposition chamber 310, and the plurality of ultraviolet lamps 610 irradiate the second zone 160 of the adsorption filter at different angles, thereby increasing the action area of ​​the ultraviolet light and the second zone 160 and improving the VOC decomposition effect.

[0115] In some embodiments, the wavelength of ultraviolet light emitted by the ultraviolet lamp 610 is in the UVA and UVC range, which improves the effect of the photocatalyst and helps to improve the VOC decomposition effect.

[0116] In some embodiments, reference Figure 6 An ultraviolet lamp 610A and an ultraviolet lamp 610B are arranged in the decomposition chamber 310. The ultraviolet lamp 610A emits ultraviolet light in the UVA band, and the ultraviolet lamp 610B emits ultraviolet light in the UVC band. The ultraviolet light of the two bands simultaneously irradiates the adsorption filter in the decomposition chamber 310, and the VOC adsorbed on the filter is completely decomposed, so that the adsorption filter can be regenerated. The regenerated adsorption filter enters the windward side again to continue to adsorb VOC in the air.

[0117] In some embodiments, reference Figure 7 The inner wall of the decomposition chamber 310 is a reflective surface. When the ultraviolet light in the decomposition chamber 310 irradiates the inner wall of the decomposition chamber 310, emission will occur, and since the decomposition chamber 310 is a sealed structure, no ultraviolet light will leak out, so that all ultraviolet light can irradiate the second area 160 of the adsorption filter, thereby improving the regeneration effect.

[0118] In some embodiments, the decomposition chamber 310 is made of mirror stainless steel so that the inner wall surface of the decomposition chamber 310 becomes a reflective surface.

[0119] In some embodiments, the decomposition chamber 310 is made of galvanized sheet material, and then a reflector is attached to the inner wall to emit excess ultraviolet rays, promote the absorption of ultraviolet rays by the photocatalyst in the adsorption material, and improve the regeneration efficiency.

[0120] In some embodiments, reference Figure 8 A mercury lamp 620 (ultraviolet lamp tube) is arranged in the decomposition chamber 310 , and the mercury lamp 620 irradiates ultraviolet light toward the adsorption filter 110 .

[0121] In some embodiments, reference Figure 8 The LED ultraviolet lamp 610 and the mercury lamp 620 are simultaneously arranged in the decomposition chamber 310, and two light sources are used to improve the regeneration efficiency of the adsorption filter 110.

[0122] In some embodiments, reference Figure 6 The adsorption filter 110 is in a straight-line closed annular structure. A decomposition chamber 310 is disposed at one end of the adsorption filter 110 . An ultraviolet lamp 610 is disposed in the decomposition chamber 310 . A closed chamber 320 is disposed at the other end of the adsorption filter 110 .

[0123] In some embodiments, reference Fig. 9 The adsorption filter 110 is in a straight-line closed annular structure. Decomposition chambers 310 are disposed at opposite ends of the adsorption filter 110 , and an ultraviolet lamp 610 is disposed in each decomposition chamber 310 .

[0124] [Control unit of air purification device]

[0125] In some embodiments, reference Figure 6 , sensors are respectively arranged at the air inlet and the air outlet of the air purification device, which are denoted as the air inlet sensor 810 and the air outlet sensor 820. The air inlet sensor 810 is configured to detect the VOC concentration at the air inlet, denoted as a. The air outlet sensor 820 is configured to detect the VOC concentration at the air outlet, denoted as b.

[0126] In some embodiments, reference Figure 6 A control unit 3 is provided in the decomposition chamber 310, and the control unit 3 is configured to perform intelligent control on the air purification device.

[0127] The difference between the VOC concentration a at the air inlet and the VOC concentration b at the air outlet is c. The control unit 3 determines the saturation state of the flexible adsorption filter 110 according to the values ​​of a, b and c, and adjusts the power of the ultraviolet lamp 610 and the rotation speed of the flexible adsorption filter 110 to avoid the reduction of the purification effect caused by the saturation of the filter in the first zone 150, thereby improving the regeneration efficiency and the air purification effect.

[0128] The control unit 3 controls the residence time of the flexible adsorption filter 110 in the decomposition chamber 310 by controlling the rotation speed of the flexible adsorption filter 110 to achieve a better regeneration requirement and thus improve the purification effect.

[0129] In some embodiments, after the air purification device is turned on, since the VOC concentration in the air and the saturation level of the flexible adsorption filter 110 are unknown, the main purpose is to reduce energy consumption. Therefore, the ultraviolet lamp 610 is turned off first, and the drive shaft 210 is controlled to start rotating at the lowest speed.

[0130] When the air purification device is just started, the flexible adsorption filter 110 and the sensors for detecting the VOC concentration (including the air inlet sensor 810 and the air outlet sensor 820) are unstable in operation. Therefore, after an interval t1 (for example, 5 minutes), the control unit 3 collects the VOC concentration a at the air inlet and the VOC concentration b at the air outlet, and the control unit 3 calculates the VOC concentration difference c=ab between the air inlet and the air outlet. The control unit 3 automatically controls the rotation speed of the drive shaft 210 and the irradiation power of the ultraviolet lamp 610 according to b and c.

[0131] When b<b1, it means that the VOC concentration at the air outlet is low. At this time, the flexible adsorption filter 110 is in good working condition and is fully capable of purifying the VOC in the air. Therefore, the control unit 3 determines to maintain the current state unchanged, the ultraviolet lamp 610 is turned off, and the drive shaft 210 runs at the lowest speed.

[0132] When b1<b<b2, it means that the VOC concentration at the air outlet is slightly over the limit. At this time, the working state of the flexible adsorption filter 110 is slightly poor and is not enough to completely purify the VOC gas brought by the air inlet. At this time, the control unit 3 continues to determine the concentration difference c.

[0133] When c>c 限 , it means that the difference between the VOC concentration at the air outlet and the air inlet is large, which further shows that the adsorption function of the flexible adsorption filter 110 is good at this time. The reason why the VOC concentration b at the air outlet exceeds the limit is because the VOC concentration a at the air inlet is too high. At this time, in order to achieve a better adsorption effect, the system will control the speed of the drive shaft 210 to increase by 1 gear, speed up the speed of the flexible adsorption filter 110, and then speed up the contact between the flexible adsorption filter 110 and the VOC gas, thereby improving the adsorption efficiency.

[0134] After the speed is increased by 1 gear, after t2 time (for example, 5 minutes) has passed again, the system reads the VOC concentration values ​​b and c again, and automatically selects the corresponding control according to the values ​​of b and c.

[0135] If the control unit 3 automatically determines that the rotation speed of the flexible adsorption filter 110 has reached the maximum value, the control unit 3 automatically turns on the ultraviolet lamp 610 and operates it at the lowest power to regenerate the flexible adsorption filter 110 .

[0136] When c<c 限At this time, the difference between the VOC concentration a at the air inlet and the VOC concentration b at the air outlet is small, indicating that the adsorption performance of the flexible adsorption filter 110 has been reduced and cannot meet the purification efficiency requirements. Therefore, the control unit 3 controls the ultraviolet lamp 610 to turn on and run at the lowest power to regenerate the filter.

[0137] After time t3 (eg, 5 minutes), the control unit 3 reads the VOC concentration values ​​b and c again, and automatically selects corresponding control according to the values ​​of b and c.

[0138] If the VOC concentration b at the air outlet is still between b1 and b2, and c<c 限 , it means that the power of the ultraviolet lamp 610 cannot meet the requirement, then the irradiation power of the ultraviolet lamp 610 is increased by one level, and the control unit 3 will automatically determine whether the current ultraviolet power is the highest level.

[0139] If not, continue to run according to the previous steps. When the control unit 3 determines that the ultraviolet lamp 610 has reached the power upper limit, the control unit 3 maintains the ultraviolet lamp 610 running at maximum power and begins to reduce the rotation speed of the drive shaft 210 to increase the residence time of the flexible adsorption filter 110 in the decomposition chamber 310 and improve the regeneration effect of the adsorption filter.

[0140] When b>b2, the control unit 3 determines that the current working state of the flexible adsorption filter 110 is poor and can no longer effectively purify the VOC brought by the air inlet 450. The control unit 3 directly controls the ultraviolet lamp 610 to run at maximum power and the drive shaft 210 to run at maximum speed.

[0141] After t4 time (e.g. 5 minutes), the control unit 3 collects data again. If b>b2 is still the case, the control unit 3 controls the ultraviolet lamp 610 to run at maximum power, and the speed of the drive shaft 210 is reduced by 1 gear until the speed drops to the lowest gear. If the requirement is still not met, the control unit 3 will automatically prompt the user that the current flexible adsorption net needs to run the automatic cleaning mode. The user chooses whether to enter the self-cleaning mode. If the user selects "Yes", it will automatically enter the self-cleaning mode. If the user selects "No", it will continue to run in the current state.

[0142] In some embodiments, the air purification device has an automatic cleaning mode. After the system enters the automatic cleaning mode, the fan of the air conditioner is turned off or the air inlet is closed, no air flows through the flexible adsorption filter 110, the ultraviolet lamp 610 runs at the highest power, and the driving shaft 210 runs at the lowest speed to decompose and regenerate the VOC adsorbed on the flexible adsorption filter 110.

[0143] When the system detects that the flexible adsorption filter 110 rotates N (eg, 3) cycles, the self-cleaning mode ends, the system shuts down, and waits for the next instruction from the user.

[0144] [Installation structure of air purification device]

[0145] In some embodiments, reference Figures 10 to 12 The air purification device includes a housing 2, the housing 2 is a rectangular frame structure, an air inlet 450 is arranged on a first side of the housing 2, an air outlet 460 is arranged on a second side, and the first side is opposite to the second side. In other words, the air inlet 450 is arranged on the front side of the housing 2, and the air outlet 460 is arranged on the rear side, and the air inlet 450 and the air outlet 460 are connected to each other front and back.

[0146] An air circulation channel is formed between the air inlet 450 and the air outlet 460 . Air flows into the air circulation channel through the air inlet 450 and then flows out from the air outlet 460 .

[0147] The first end of the housing 2 is provided with a first space, and the second end is provided with a second space. The first end is opposite to the second end, and the first space and the second space are distributed at opposite ends of the air circulation channel. In other words, the first space is provided at the left end of the housing 2, and the second space is provided at the right end. The first space and the second space are provided opposite to each other on the left and right. The first space and the second space are closed spaces, which are recorded as closed cabin 320.

[0148] The adsorption filter 110 is disposed in the housing 2, referring to Fig.10 and Fig.11 , the portion of the adsorption filter 110 facing the air circulation channel is the first zone 150, and the rest of the adsorption filter 110 is located in the first space and the second space. In other words, the first zone 150 of the adsorption filter 110 faces the air inlet 450 and the air outlet 460, and the second zone 160 is located in the closed cabin 320. An ultraviolet lamp 610 is arranged in at least one closed cabin 320.

[0149] The air purification device has a flat rectangular structure as a whole. The adsorption filter 110, the driving unit 1, the ultraviolet lamp 610, the closed cabin 320, and the decomposition cabin 310 are all integrated on the shell 2. The overall structure is compact and the volume is small.

[0150] In some embodiments, reference Fig.11 The housing 2 includes a first side plate 410, a second side plate 420, a first side frame 430 and a second side frame 440. The first side plate 410 and the second side plate 420 are plate-shaped structures. The first side plate 410 is provided with an air inlet 450, and the second side plate 420 is provided with an air outlet 460.

[0151] The first side frame 430 is a U-shaped frame structure, the second side frame 440 is a slender frame structure, the second side frame 440 is fixed at the U-shaped opening of the first side frame 430, the first side frame 430 and the second side frame 440 form a rectangular frame structure, and the first side panel 410 and the second side panel 420 are fixed on opposite sides of the rectangular frame structure.

[0152] In some embodiments, reference Fig.12 , flanges are provided on the sides surrounding the air inlet 450 and the air outlet 460. In other words, referring to Fig.14 A first flange 411 is disposed on the first side plate 410 , and the first flange 411 is disposed around the air inlet 450 ; a second flange 421 is disposed on the second side plate 420 , and the second flange 421 is disposed around the air outlet 460 .

[0153] A sealing portion, such as a sealing strip, is provided on the first flange 411 and the second flange 421 . The sealing strip is configured to contact the adsorption filter 110 to prevent the air in the decomposition chamber 310 and the sealing chamber 320 from flowing out.

[0154] In some embodiments, reference Figure 1 and Figure 6 The adsorption filter 110 is in a straight-line closed ring structure. The adsorption filter 110 forms two layers of first areas 150. The two layers of first areas 150 are arranged at intervals along the air flow direction. One end of the two layers of first areas 150 forms an arc-shaped first end 171, and the other end forms an arc-shaped second end 172. The first end 171 passes through the closed cabin 320 at the left end, and the second end 172 passes through the closed cabin 320 at the right end.

[0155] In some embodiments, the driving unit 1 includes a motor 510, the power output end of the motor 510 is connected to the first pulley 520, the shaft end of one of the rotating shafts 230 (driving shaft 210) is connected to the second pulley 530, and a belt 540 is arranged between the first pulley 520 and the second pulley 530. When the motor 510 is started, the driving shaft 210 is rotated through the transmission of the first pulley 520, the belt 540 and the second pulley 530, and the driving shaft 210 drives the adsorption filter 110 to rotate.

[0156] Reference Fig.13 A plane portion 233 is provided on one axial end of the driving shaft 210 , and the plane portion 233 is configured to cooperate with the second pulley 530 to prevent the two from sliding relative to each other.

[0157] In some embodiments, reference Fig.11 , the driving part 1 is fixed on the top of the housing 2. A mounting frame 550 is fixedly arranged inside the second side frame 440, and the motor 510 is fixedly arranged on the mounting frame 550. The power output end of the motor 510 extends upward from the second side frame 440. The first pulley 520, the belt 540 and the second pulley 530 are all arranged on the upper side of the second side frame 440. A cover 470 is fixedly arranged on the upper side of the second side frame 440, and the cover 470 covers the first pulley 520, the belt 540 and the second pulley 530.

[0158] Bearings 240 are installed on the inner sides of the first side frame 430 and the second side frame 440 respectively. The shaft ends of the driving shaft 210 and the driven shaft 220 cooperate with the bearings 240 on the corresponding sides respectively to achieve the installation of the driving shaft 210 and the driven shaft 220 in the housing 2.

[0159] In some embodiments, the housing 2 Fig.11 An ultraviolet lamp 610 is arranged in the decomposition chamber 310 and is fixedly mounted on the first side frame 430. The ultraviolet lamp 610 extends in a vertical direction to increase the area of ​​the adsorption filter 110 irradiated.

[0160] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0161] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air purification device, characterized in that: include: An adsorption filter is configured to adsorb pollutants in the air, and the adsorption filter is loaded with a photocatalyst; A decomposition chamber, wherein the adsorption filter screen passes through the decomposition chamber, the portion of the adsorption filter screen located within the decomposition chamber is the second zone, and the portion of the adsorption filter screen located outside the decomposition chamber is the first zone, and air flows through the first zone; an ultraviolet lamp disposed in the decomposition chamber, the ultraviolet lamp being configured to irradiate the second area of ​​the adsorption filter to decompose the pollutants adsorbed on the second area; The driving unit is configured to drive the adsorption filter and the decomposition chamber to generate relative movement so as to adjust the action area of ​​the adsorption filter and the ultraviolet lamp.

2. The air purification device according to claim 1, characterized in that: The adsorption filter is a flexible adsorption filter, which is arranged in a surrounding manner to form multiple layers of the first area in contact with the air, and the air flows through the multiple layers of the first area in sequence along its flow direction.

3. The air purification device according to claim 2, characterized in that: The flexible adsorption filter screen is in a closed annular structure. The driving part comprises a driving shaft and a driven shaft. The flexible adsorption filter screen is provided with the driving shaft and the driven shaft at intervals along the rotation direction thereof.

4. The air purification device according to claim 3, characterized in that: The flexible adsorption filter screen is provided with reinforcement parts at the two opposite ends of the cross section; The driving shaft and the driven shaft are provided with two spaced apart limit platforms along their axial directions, the flexible adsorption filter is located between the two limit platforms, and any one of the two limit platforms contacts the reinforcement part to drive the flexible adsorption filter to rotate.

5. The air purification device according to any one of claims 1 to 4, characterized in that: A plurality of ultraviolet lamps are arranged in the decomposition chamber, and the plurality of ultraviolet lamps irradiate the second area of ​​the adsorption filter at different angles.

6. The air purification device according to any one of claims 1 to 4, characterized in that: A control unit is provided in the decomposition chamber, and the control unit is configured to control the rotation speed of the adsorption filter and the power of the ultraviolet lamp.

7. The air purification device according to any one of claims 1 to 4, characterized in that: The wavelength of ultraviolet light emitted by the ultraviolet lamp includes a long-wave dark spot effect ultraviolet band and a short-wave sterilization ultraviolet band.

8. The air purification device according to any one of claims 1 to 4, characterized in that: The inner wall surface of the decomposition chamber is a reflective surface.

9. An air purification device, characterized in that: include: An adsorption filter is configured to adsorb pollutants in the air, the adsorption filter is loaded with a photocatalyst, the adsorption filter is arranged around to form a multi-layer first area in contact with the air, and the air flows through the multi-layer first area in sequence along its flow direction; A decomposition chamber, wherein the adsorption filter screen passes through the decomposition chamber, the portion of the adsorption filter screen located within the decomposition chamber is the second zone, and the portion of the adsorption filter screen located outside the decomposition chamber is the first zone; an ultraviolet lamp disposed in the decomposition chamber, the ultraviolet lamp being configured to irradiate the second area of ​​the adsorption filter to decompose the pollutants adsorbed on the second area; The driving unit is configured to drive the adsorption filter to move so that the adsorption filter circulates through the decomposition chamber.

10. An indoor unit, comprising: A housing, the housing comprising an air outlet, an air return outlet, and a channel, the channel connecting the air outlet and the air return outlet; The air purification device according to any one of claims 1 to 9, wherein the air purification device is arranged at at least one of the air outlet, the return air outlet and the channel.

11. An air conditioner, comprising: Outdoor unit; as well as An indoor unit is connected to the outdoor unit, and the indoor unit is the indoor unit according to claim 10.

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