CN105987444B - Compact air purifier including UV light emitting diode and photocatalytic filter - Google Patents

Abstract

A kind of compact air purifier including UV light emitting diode and photocatalytic filter is disclosed, the air purifier includes: upper housing；The diameter of lower case, lower case is less than the diameter of the upper housing, and the lower part of the upper housing is arranged in；And inner shell, it is fixed in the upper housing and lower case, so that inner shell is spaced apart with the upper housing and lower case；Wherein, the side on the top of the lower case has air-inlet grille, air is inhaled into the lower case by air-inlet grille, the lower part of the inner shell has air intlet, air stream enters inner shell by air intlet, and the top of inner shell has discharge portion, and air is discharged by discharge portion.The air purifier is compact-sized, so as to be assemblied in the cup holder of automobile, can be used for deodorization, dust collection and sterilization, and convenient for safeguarding and repairing.

Description

Compact air purifier including UV light emitting diode and photocatalytic filter

Technical field

The present invention relates to a kind of air purifiers, and more specifically it relates to a kind of such air purifier: it is in this way It is compact make it possible in the cup holder for being mounted on vehicle, can effectively deodorization, collect dust and sterilization, and allow with simple Mode replaces filter.

Background technique

Titanium dioxide (TiO₂) there is high adhesion in the substrate of its covering, and it is (main when light activated light can be caused If ultraviolet light) when being applied to thereon, it is shown that photocatalytic activity.

Particularly, in terms of the light-catalyzed reaction of titanium dioxide is for such as antibacterial and deodorization effectively, and therefore frequent For air cleaning.For example, a kind of method for purifying air, wherein when air passes through photocatalytic filter, using UV light spoke According to TiO₂Photocatalytic filter (the TiO of covering₂Ceramic foam filter) Lai Yinqi light-catalyzed reaction, this be it is a kind of in recent years The air purification method being widely used.

Titanium dioxide is not single use, but is usually used with the state being covered in substrate.Therefore, titanium dioxide is covered The shape of the photochemical catalyst of titanium is determined generally according to the shape of substrate.

It has been mainly used in using the deodorization of titanium dioxide in medium-sized and large-scale air-conditioning, but hardly for small-sized Household Air Purifier in.

When strong UV light is occurred and provides big photocatalytic filter, there is large-size air conditioning high air to flow speed Degree and area and its show deodorizing effect it is not especially difficult.

However, the size of photocatalytic filter and UV generator is limited in the case where small size air cleaner, and empty Flow of air speed also reduces.Therefore, there is an urgent need to develop such air purifier, even in small-sized photocatalytic filter and Certain level or higher deodoriging properties are also showed that under UV generator.Particularly, in Household Air Purifier, noise and energy Consumption will be thought over.However, in the prior art, the development of air purifier concentrates on medium-sized and large-size air conditioning, and For this reason that the technology for being suitable for new environment (such as family) is still inadequate.

If irradiating the photocatalytic filter of small size air cleaner with strong UV light for reinforcing effect, light is urged The effect for changing filter cannot be guaranteed, and the material meeting rapid degradation or energy consumption in the region irradiated by strong UV light will It is excessively increased.In addition, the UV light emitting diode of quantity and the short life of UV light emitting diode that installation increases will cause expense Increase.

Further, although also can be expected to use be about with peak wavelength 270nm UV light emitting diode, it is known that Most UV light can be increased the efficiency of air purifier, but cannot be said with peak wavelength about by Titanium dioxide absorption For the deodorizing effect that the use of the UV light emitting diode of 270nm has been shown, because of the peak value wave emitted from UV light emitting diode Long is about that power of the UV light of 270nm significantly than the UV light using peak wavelength for other values is faint.

In addition, new research has been carried out in terms of the shape or size to photocatalytic filter, even in small size The effect of enhancing can be shown down, and related with the photocatalytic filter of UV light source.The shape of photocatalytic filter Or size shows there is close ties with air drag, and can be used for the specification and property of the fan of small size air cleaner It can must be defined.For this reason, for the normal function of small-sized air purifier, by reducing air cleaning Air drag in device comes so that air flowing held stationary is important.

In addition, it is necessary to develop the method for preparing photocatalytic filter, the activation of photocatalytic filter itself can be enhanced Effect.Without saying more, a kind of technology that the photocatalytic filter even by low capacity obtains high deodorizing effect be with One of most desirable technology in the relevant technical field of small size air cleaner.

In addition, when preparing compact air purifier using UV light emitting diode and photocatalytic filter, fan and not Same putting in order for filter will also be thought over.In medium-sized according to prior art and large-size air conditioning, dust is first It is collected by dust collecting filter, and deodorization is then implemented by photocatalytic filter.Herein, filter is to reduce air The biggest factor of flowing pressure, and be therefore not difficult to find out, it, will when photocatalytic filter is used for small size air cleaner It shows and is used for same function in medium-sized or large-size air conditioning with it.

In addition, it is necessary to capture pathogenic bacteria entrained by the air in family.Always for filter or even bacteria removal HEPA filter is the filter for significantly slowing air flowing, and for this reason that, it is difficult in small size air cleaner Middle use.If the installation of HEPA leads to significantly slowing down for air flowing, its deodorization on the contrary that will affect photocatalytic filter Function.For this reason, it may be necessary to another device is found, in the case where the air without substantially intervening in air purifier flows, It can effectively bacteria removal.

It particularly, is to be badly in need of that there is high deodorization effect in the inner space of vehicle that the smell of wherein smoke from cigarette is difficult to clean up The air purifier of rate.Because inner space of vehicle is very narrow, it needs to occupy little space or does not take up space Air purifier, while there is the ability of significant purification air.Particularly because the frequent vibration of automobile, so air is net Changing device should design in this way, so that even if may remain on fixed position in automotive interior, and can be with simple Mode is installed.Particularly, it is provided as accessory by most motor corporations for the air purifier of automobile, and therefore bring is asked Topic is that the air purifier used on a kind of automobile cannot be used for other automobiles.Therefore, related to automobile air purifier Technical field in, to portable air purifier have high demand.

In addition, if air purifier is difficult to maintenance and repair or is difficult to make, since it is considered that its function, it can Sale property be lowered, and its user will feel that it is not convenient.Therefore, it is necessary to the air purifier with simple structure, And it should be easy to manufacture and convenient for safeguarding and repairing.

Summary of the invention

The present invention is to make to solve the above problem in the prior art, and the purpose of the invention is to manufacture Using the air purifier of UV light emitting diode and photocatalytic filter, and determine the peak of UV irradiation level, UV light emitting diode It is worth wavelength and input power, the shape of photocatalytic filter, specification, size and material, processing method and UV light emitting diode Relationship between photocatalytic filter, the odor removal efficient of air purifier can be enhanced in these.

Another aspect provides a kind of compact air with high deodorization, dust collection and germicidal efficiency is net Change device.

Another aspect provides a kind of air purifiers, are compacts, make it possible to for automobile It is interior, and it can be fixed on inner space of vehicle in a simple manner.

Another aspect provides a kind of air purifiers, have maximized purification ability of air, energy consumption It is smaller, and noise level is low.

It is another object of the present invention in order to provide a kind of more compact air purifier, with complexity but structure is tight Careful internal structure.

It to achieve the goals above, include: to be arranged in UV light-emitting diodes tube lining the present invention provides a kind of air purifier The UV light emitting diode for photo catalytic activation on bottom；And photocatalytic filter, it is set as and the UV light emitting diode Substrate apart, and in face of the UV light emitting diode for photo catalytic activation, wherein the air purifier has following Technical characteristic.

The photocatalytic filter includes the TiO being covered in substrate₂。

It is 10- in the UV irradiation level of the photocatalytic filter detected on the surface of UV light emitting diode 20mW/cm², and preferably 14-15mW/cm²。

The UV light emitted from the UV light emitting diode for photo catalytic activation has the peak wavelength of 340-380nm, and excellent It is selected as 360-370nm.

It is applied to the electric energy of the UV light emitting diode for photo catalytic activation voltage and 200-300mA with 5-15V Electric current.

The photocatalytic filter includes multiple neighbouring parallel chambers, and the chamber is formd in face of living for photocatalysis Air flowing access on the direction of the UV light emitting diode of change, and the height of the photocatalytic filter is 2-15mm, and excellent It is selected as 5-10mm.

When in terms of air-flow direction, the shape of chamber is square.

The thickness (t) of frame between chamber is 0.3-1.2mm, and preferably 0.5-0.7mm.

The width of each chamber is 1-4mm, and preferably 1.8-2.2mm.

The density of chamber is 30-260 chamber/square inch, and preferably 80-120 chamber/square inch.

Substrate is made of porous ceramic film material.

Photocatalytic filter passes through the TiO that will be covered in substrate₂1-2 hours are sintered at 350-450 DEG C to prepare.

The air purifier is designed to air and flows from UV light emitting diode substrate to photocatalytic filter.

The air purifier further comprises: UV reflecting plate, and setting is urged between UV light emitting diode substrate and light Change on the relevant lateral parts in part between filter.

When the direction viewing flowed from air, the shape on the surface of photocatalytic filter is round or square.

The area on the surface of photocatalytic filter is 4²-7²cm², and it is used for the UV light emitting diode of photo catalytic activation Spacing between the surface of photocatalytic filter is 2-3cm.Preferably, the area on the surface of photocatalytic filter It is 5.3²-2.7²cm², and for photo catalytic activation UV light emitting diode and photocatalytic filter the surface between Away from for 2-3cm.

UV light emitting diode for sterilization be designed to irradiation have germicidal wavelength UV light, UV irradiation direction be used for The UV irradiation direction of the UV light emitting diode of photo catalytic activation is identical, and the UV light emitting diode for sterilization is arranged on UV and shines On diode substrate.

The air purifier further comprises: the back side of photocatalytic filter is arranged in dust collecting filter.

UV light emitting diode substrate and photocatalytic filter are arranged in the inner shell of air flowing, in this way Be arranged: photocatalytic filter is disposed adjacent to the inner wall of a part of inner shell, with relatively large area of section, and And UV light emitting diode substrate is arranged to the spaced apart from inner walls with a part of inner shell, with relatively small section face Product.

The air purifier includes the upper housing with relatively large size and the lower case with relatively small size, And the lower part of upper housing is arranged in lower case.Inner shell with the inner space extended vertically is fixed in this way In upper housing and lower case, so that it is spaced apart with upper housing and lower case: inner shell has relatively large cross section face Long-pending a part is arranged in upper housing, and a part with relatively small cross-sectional area of inner shell is arranged under In shell.At least side of the upper end of lower case has air-inlet grille, is aspirated into lower casing by air-inlet grille outside air In vivo.

It is arranged at the height lower than air-inlet grille in the air intlet that the lower part of inner shell is formed, and and air inlet grille The part of the corresponding lower case of vertical portion and inner shell between grid and air intlet is arranged at each interval.

The air purifier further comprises the wind of the upstream for the UV light emitting diode substrate being arranged in inner shell Fan.

Fan is designed to that outside air is pushed to enter inner shell, and its lower part for being fixedly mounted in inner shell Fan containing section.Fan has the pumping unit for being formed in opposite side, extends transversely, and air intlet is formed in The opposite side of fan containing section, and air-inlet grille is formed in the front of lower case.

Inner shell is made of two sseparated parts: left shell and right shell body.

The air purifier further comprises the carbon filter being arranged in air intlet.

Lower case is made of two sseparated parts: procapsid and back casing.Procapsid is designed to when procapsid be point From when, carbon filter is exposed to outside.

The air purifier further comprises the parallel ladder component of a pair being formed about in air intlet, and carbon The shell of filter is assemblied between ladder component.

The inner shell and lower case being spaced each other are connected to each other by being formed in the screwed part of lower case, and threaded portion The shell of the circular portion support carbon filter of part, thus prevent carbon filters to be detached from ladder component.

The shell of carbon filter includes prefilter, and active carbon is incorporated in the shell of carbon filter.

The shell of carbon filter has the elaxtic seal being connected with the shell, to prevent air from flowing into carbon filter In gap between shell and ladder component.

Fan has discharge portion, and discharge portion, which is designed to for air being discharged, is upwardly into inner shell, and inner shell Body includes the streamlined diverging duct above fan containing section, is designed so that the area of section of air flowing from discharge Part starts to incrementally increase.

Inner shell includes the fluid guider above the discharge part of fan, is designed to air being diffused into streamline Type diverging duct.

UV light emitting diode substrate above streamlined diverging duct at a certain distance from be arranged in such a way: UV hair Optical diode substrate is tilted according to the streamline shape of streamlined diverging duct.

Photocatalytic filter and dust collecting filter are arranged on the height phase of the intracorporal height of inner shell with upper housing It closes, so that photocatalytic filter and dust collecting filter are telescopic in a side direction from inner shell.

The photocatalytic filter includes catalyst member and the elastic buffer around catalyst member covering.

Photocatalytic filter containing section has the opening portion of the two side portions of exposure photocatalytic filter, urges from light The front surface for changing filter extends.

The dust collecting filter includes: the filter component for collecting dust；The frame of filter component is accommodated, It is designed to be fixed on filter component on inner shell or extracts filter component from inner shell out；Be formed in frame Handle on front.

Inner shell includes: the discharge portion that photocatalytic filter downstream is arranged in, and is designed to air from inner shell Body discharge.

Inner shell includes: streamlined diverging duct, is designed to that air is guided to flow to discharge portion.

Inner shell includes: UV ray barrier plate, is arranged on the upstream of discharge portion, and is designed to stop UV light logical It crosses discharge portion and is emitted to outside.

Inner shell includes: the PCB fixed part above streamlined transmitting pipeline, is designed to fixed control PCB.

The air purifier includes: the top shell for being fixed on the top of PCB fixed part, is designed to covering control PCB and discharge portion, and it is fixed to the upper end of inner shell.The state on the top of inner shell is fixed in upper housing Under, the outer peripheral lower end of the upper end connection top shell of upper housing.

Top shell has air discharge grille, is designed to be connected to discharge portion.

Top shell has button, is designed to ON/OFF control PCB.

The air purifier includes: inside cable, is designed to control from PCB and delivers power to fan and UV luminous two Pole pipe substrate and control fan and UV light emitting diode substrate.Inside cable extends outwardly from control PCB, with inner shell Outside is in close contact, and the inside for then entering inner shell by the inside cable through-hole being formed in fan containing section is empty Between.

Fan is connected to by the inside cable that inside cable through-hole extends into the inner space of inner shell, and into one Step extends along the inner space of inner shell, is thus connected to UV light emitting diode substrate.

Photocatalytic filter and dust collecting filter are provided so that it can be pulled out from inner shell, and internal electricity Cable extends along the left or right side of inner shell.

Inside cable through-hole is formed in the positive upper end of fan containing section.

Controlling PCB has electric energy input connector, electric energy input connector exposes to the right, makes it possible to along to the left Direction by connector device be fitted on electric energy input connector or electric energy input connector to the left expose, make it possible to along to Connector device is fitted on electric energy input connector by right direction.

Upper housing includes cylindric side section and the stepped portion that extends internally from the lower end of cylindric side section.Lower case Including cylindric side section, diameter is less than the diameter of upper housing, and therefore upper housing is fixed to lower case in this way Top: where upper housing moves up from lower case bottom and is arranged around lower case.

The stepped portion of upper housing has through hole, and the stepped portion of lower case has opening portion.External cable is logical It crosses the gap each other between matched through hole and opening portion and extends to outside.

The inside of upper housing has locking projections, with circumferential angled surfaces, and the outer surface on the top of inner shell Raised holding tank is included, the position of the locking projections is positioned corresponding to；Raised fixing groove is disposed adjacent to raised holding tank； Click feel protrusion between raised holding tank and raised fixing groove.

The shape that raised holding tank has bottom open, and raised fixing groove has the closed shape in bottom.In upper housing The locking projections in portion are designed to: are moved up along raised holding tank to be assembled to raised holding tank, and then to side It moves and gets over click feel protrusion to be assembled to raised fixing groove, upper housing is fixed to inner shell in this way.

Lower case upper end formed stepped portion have recess, when upper housing along lower case outside upwards or to When lower mobile, locking projections can pass through the recess.Recess is formed in the underface of raised holding tank.

The end of external cable have "" shape terminal.

The air purifier can obtain one or more in following technical effect: it is compact-sized, it enables it to It is enough assemblied in the cup holder of automobile；It can be used for deodorization, dust collection and sterilization, and enhance the deodorization effect of air purifier Rate, germicidal efficiency；With maximized purification ability of air, energy consumption is smaller, and noise level is low；Convenient for safeguarding and repairing.

Detailed description of the invention

Fig. 1 is the perspective view of air purifier according to the present invention.

Fig. 2 is the decomposition perspective view of air purifier shown in FIG. 1.

Fig. 3 to Fig. 5 is to show the perspective view of the assembling process of component shown in Fig. 2；

Fig. 6 is the perspective top view of upper housing according to the present invention.

Fig. 7 to Figure 10 is after having separated shell (upper housing, lower case and top shell) and having separated carbon filter The perspective view for the inner shell seen from all directions.

Figure 11 is the perspective view for having separated the air purifier of the invention of upper housing and procapsid.

Figure 12 is the perspective view of air purifier according to the present invention, in the state in which, wherein top shell, on Shell, back casing and left shell are omitted.

Figure 13 is the perspective view of air purifier according to the present invention, in the state in which, wherein top shell, on Shell, back casing and right shell body are omitted.

Figure 14 is the perspective view of the arrangement of photocatalytic filter and UV light emitting diode substrate.

Figure 15 is the top view of photocatalytic filter.

Figure 16 is showing the figure of acetaldehyde degradation, for the letter of the irradiation level of the positive UV light of arrival photocatalytic filter Number.

Figure 17 is showing the figure of the UV absorptivity of photocatalytic filter, is the function of UV wavelength.

Figure 18 is to show the figure of the removing speed of acetaldehyde under different UV wavelength.

Figure 19 is to show the figure of the variation of acetaldehyde removing speed of the photocatalytic filter of different height.

Figure 20 is to show the figure of the variation of acetic acid removing speed of the photocatalytic filter of different height.

Figure 21 is showing the figure of the deodoriging properties of photocatalytic filter, by being sintered 2g TiO under different sintering temperatures₂1 Hour obtains.

Figure 22 is showing the figure of the deodoriging properties of photocatalytic filter, by being sintered 2.5g under different sintering temperatures TiO₂It obtains within 1 hour.

Figure 23 is showing the figure of the deodoriging properties of photocatalytic filter, by being sintered under different sintering times in 400 DEG C 2.5g TiO₂It obtains.

Specific embodiment

Exemplary embodiment is described in detail below with reference to the accompanying drawings.However disclosure of the invention will be presented as difference It form and should not be regarded as being limited to embodiments shown herein.But the offer of these embodiments is so that the present invention discloses It will be comprehensive and complete, and will fully convey the scope of the invention to those skilled in the art.

For those in the field, if necessary, the structure for any one embodiment stated herein and component can Those of to be applied to or replace in other embodiments component, or it is omitted or other component can add thereunto.

Hereinafter, the preferred embodiment of the present invention will be described in detail with reference to attached drawing.

The appearance of air purifier

It is the perspective view of air purifier according to the present invention, the air purifier includes: with phase with reference to Fig. 1 To the upper housing 10 of big diameter, the lower case 20 with the smaller diameter of the diameter than upper housing 10 and it is arranged in upper housing 10 Top top shell 40.

Two buttons 41 are provided in the central part of top shell 40, button 41 includes: on/off button, allows to open With closing air purifier；Blast velocity control button controls the air stream (wind speed) in air purifier.In addition, being provided with two Lamp 42, lamp 42 allow visually to check the open/close state and wind speed of air purifier.Air purifier can be manipulated, for example, Air purifier is opened/closed by pressing on/off button several seconds, and presses blast velocity control button with controlled wind speed.

In the side of top shell 40, it is provided with air discharge grille 43, is discharged by its purified air.Therefore, only Air after change is discharged by air discharge grille 43, and big foreign substance is stopped by grid 43, and its be therefore prevented from into Enter air purifier.

The diameter of upper housing 10 is greater than the diameter of lower case 20.The diameter of upper housing 10 is preferably more than the upper of Automobile cup supporter End, in this way when air purifier is mounted in cup holder, it will cannot be inserted into the cup holder of automobile.

Lower case 20 is made of two sseparated parts: procapsid 21 and back casing 22.Before air-inlet grille 212 is formed on Near the upper end of shell 21.

Therefore, outside air will flow into lower case 20 by air-inlet grille 212, and outside air will be set in air purifier The structure purification set, and then flow out the air discharge grille 43 out of air purifier through top shell 40.

The design and connection structure of air purifier

Fig. 2 is the Knock-Down Component perspective view of air purifier shown in FIG. 1, and Fig. 3-5 is to show in assembling figure 2 The perspective view of the process of component.It is that upper housing 10 has such a structure that upper housing 10, which is displayed on the reason of bottom of Fig. 2-5, It is moved to top from the bottom of air purifier with locked.

As shown in Figure 1, upper housing 10, lower case 20 and top shell 40 constitute the shape of air purifier, and such as Fig. 2 Shown, inner shell 30 is arranged on wherein.Inner shell 30 and upper housing 10, lower case 20 and the top for constituting external shell Portion's shell 40 combines, to firmly fix external shell.

As shown in the picture, inner shell 30 is made of two sseparated parts: left shell 31 and right shell body 32.Inner shell 30 are divided into the direction Cheng Zhi that procapsid 21 and back casing 22 are divided into the direction of two sseparated parts and lower case 20 Angle.When the segmentation direction difference of the segmentation direction of the lower case 20 of external shell and inner shell 30 as described above, shell Structure can more firmly be connected to each other.

It is provided with PCB fixed part 33 in the upper housing of inner shell 30, is arranged so that, so that control PCB 51 will not cover discharge portion 34, the side of the upper end of the internally positioned shell 30 of discharge portion 34.In addition, by being formed in PCB The streamlined diverging duct 382 of 33 lower section of fixed part provides space in PCB fixed part 33.As described below, In order to guide the air for flowing into inner shell 30 to reach discharge portion 34, streamlined diverging duct 382 is formed in inner shell 30 Top.When PCB fixed part 33 is arranged in the space provided by formation diverging duct, the inner space of air purifier It can be effectively utilised.

External cable through-hole 322 is formd on the right side for the inner shell 30 for being wherein provided with PCB fixed part 33, it is external Cable can be connected to control PCB 51 by external cable through-hole 322, and form inside cable through hole 312 in left side, By 312 electric energy of inside cable through hole by from control PCB 51 be applied to fan 60 and UV light emitting diode substrate 55, such as with Described in lower.

In the air flow duct structure formed by inner shell 30, successively it is disposed proximate to each other from the top to the bottom Dust collecting filter 90 and photocatalytic filter 80, as shown in the figure.Below photocatalytic filter 80, UV light emitting diode Substrate 55 is fixed on photocatalytic filter 80 at a distance.UV light-emitting diodes on UV light emitting diode substrate 55 Pipe is arranged towards photocatalytic filter 80.

Dust collecting filter 90 and photocatalytic filter 80 have fully blocked air flow duct structure, flow into this way The air of pipeline must pass through photocatalytic filter 80 and dust collecting filter 90.On the other hand, UV light-emitting diodes tube lining Bottom 55 is arranged on substrate fixed part 303, internally raised from the inner wall of inner shell 30, in this way it with The spaced apart from inner walls of inner shell 30, such air flow pass through the gap between them.It is as described below, it is sent out in UV The central part of optical diode substrate 55 is provided for sterilizing with the light emitting diode that peak wavelength is 275nm, and And surround the UV light emitting diode, with peak wavelength be 365nm three UV light emitting diodes be disposed radially around with Activate photocatalytic filter 80.

It should be noted that dust collecting filter 90 and photocatalytic filter 80 have the structure that can pull out forward so as to Replacement.Because these filters by the direction (front) of pull not with external cable as described above (right) and inside cable The direction overlapping of (left) setting, when the filters are changed, cable is not required to be separated.

The lower part of inner shell 30 is provided with fan containing section 301, fan 60 is contained and is fixed on wherein, and The left and right side of fan containing section 301 is formed with air intlet 302, passes through air intlet by the air that fan 60 sucks 302 flow into fan containing section 301.

It is had such a structure that for the fan 60 in air purifier of the invention even in narrow space, it Air stream can also effectively be generated.As shown, foring the open suction part of twocouese in the central part of fan 60 61.By the rotation of impeller, the air introduced by suction part 61, which is consumingly discharged into, is formed in the upper of suction part 61 The discharge portion 63 of side.

The top of discharge portion 63 in inner shell 30 is provided with movement-oriented device 37, is designed to: will be from tool The air stream for having the discharge portion 63 of stenosed section to discharge widely is dispersed.In addition, foring stream in the lower part of inner shell 30 Line style diverging duct 381, another element widely dispersed as the air stream that discharge portion 63 is discharged.As described above Movement-oriented device 37 and streamlined transmitting pipeline 381 can guide air stream naturally, while narrow discharge portion 63 is high The kinetic energy rejection of the air stream of speed discharge minimizes.

It is provided with plate frame around the air intlet 302 formed in the lower part of inner shell 30, and in plate frame Top and bottom form the ladder component 305 longitudinally extended.Ladder component 305 has such a structure that it is empty with covering The carbon filter 70 of gas import 302 combines.As shown in the drawings, the air intlet 302 formed in the lower part of inner shell 30 It is covered by carbon filter 70.Carbon filter 70 includes for keeping the shell 71 of 70 shape of carbon filter and being set to 71 liang of shell Prefilter 72 (side and its opposite side in face of air intlet 302) in the open portion of side.

The function of prefilter 72 is filtering dust, while stopping to be accommodated in the intracorporal active carbon (not shown) of shell from shell Outflow in 71.

The function of active carbon in carbon filter 70 is the stink particle in absorption and removing air.It is used when active carbon When number increases, adsorption capacity decline, and the regeneration of active carbon is highly difficult.For this purpose, in the present invention, for the ease of carbon The replacement of filter 70, provided with can connect and dismountable structure.

As described above, it is provided with flat board member around air intlet 302, and ladder component 305 is arranged on it Top and bottom.The width of carbon filter 70 is equal or slightly larger than the distance between two ladder components 305 (when carbon filter 70 Shape be square, the width be square side side length).Therefore, each of two carbon filters 70 can be with The left and right side of the lower end of inner shell 30 is set, by assembling the top and bottom of carbon filter 70 in two ladders Without using individual integrated structure between component.

As shown, the shell 71 around carbon filter 70 is provided with elaxtic seal 73, to prevent air from flowing into carbon The shell 71 of filter 70 and the gap between the plate frame of air intlet 302.

As shown, carbon filter 70 has trapezoidal cross-section, maximum side is contacted with inner shell 30, and towards Opposite side becomes narrow gradually.As shown in figure 4, the tilted shape of the marginal portion of carbon filter 70, is formed by this structure, with The circle of screwed part 306 is meshed, and inner shell 30 is connect with back casing 22.Pass through this structure, carbon filter 70 It engages with screwed part 306, and is supported on the direction towards inner shell 30.

About the connection structure between shell, two separate sections of inner shell 30 pass through screw thread etc. first and connect each other It connects, in the state in which under, wherein fan 60 and UV light emitting diode substrate 55 are fixed to the either side of inner shell 30. In a preferred embodiment of the invention, fan 60 and UV light emitting diode substrate 55 are fixed to left shell 31, internal to be formed There is inside cable through hole 312, and through hole 312 is covered by right shell body 32, two inner housing parts be connected to each other whereby, Because the inside cable of connection control PCB51 and fan 60 and UV light emitting diode substrate 55 passes through inside cable through hole 312 are arranged in left shell 31.

Then, as shown in figure 4, control PCB 51 is fixed to the substrate fixed part on the top of inner shell 30 by screw thread etc. Divide 303, and dust collecting filter 90 and photocatalytic filter 80 are respectively inserted 35 He of dust collecting filter containing section In photocatalytic filter containing section 36.

Next, as shown in figure 5, back casing 22 by screw thread (as shown in Figure 4 be formed in the intracorporal shape of threads ditch of rear shell The screwed part 306 of slot and inner shell) it is fixed to the lower part of inner shell 30, and procapsid 21 is connected to back casing 22, with Lower case 20 is fixed to inner shell 30 whereby, and top shell 40 is fixed to the top of inner shell 30.

Finally, upper housing 10 is assembled from the top to the bottom in state shown in Fig. 5, and as shown in Figure 1 locked It is fixed, device is obtained whereby.

Relationship between the shell structure and filter replacement structure of air purifier

In the present invention, when procapsid 21 be connected and when upper housing 10 is connected, procapsid 21 and upper housing 10 can To be successively firmly attached, without using screw thread, unlike other shells are connected.According to the present invention, upper housing 10 can be with Separation as shown in Figure 5, does not need using separating tool.After the separation of upper housing 10, procapsid 21 can also be without using separation Separated to tool.

Hereinafter, the connection structure of procapsid 21 and upper housing 10 will be illustrated.

Fig. 6 is the perspective view of upper housing 10 of the invention.Upper housing 10 includes cylindric side section 11, and from cylindric side The stepped portion 12 that the bottom of part 11 extends internally.Lower case 20 is equal or slightly larger than by the internal diameter that stepped portion 12 limits Diameter, such upper housing 10 can be assembled around the outside of lower case 20, and be moved to inner shell from the bottom of lower case 20 The top of body 30, with such state, wherein lower case 20 is integrated to inner shell 30.

Lower case 20 includes: cylindric side section 211,221, has the internal diameter smaller than upper housing 10；Stepped portion 213, 223, it is respectively formed in the top of cylindric side section 211,221；With ladder side section 214,224, respectively from stepped portion 213,223 end upwardly extends.The diameter of ladder side section 214,224 is equal to or slightly less than the interior of cylindric side section 11 Diameter.Stepped portion 12 with upper housing 10 is connect by the stepped portion 213,223 of lower case 20, when upper housing 10 is along lower case When 20 outer surface moves up, moving upwards for upper housing 10 is limited whereby.In the upward of upper housing 10 as described above It moves at confined height, the upper end of upper housing 10 is connect with top shell 40.

As shown in fig. 6, foring locking projections 14 and positioning protrusion 15 in the inside of upper housing 10.In procapsid 21 In preceding stepped portion 213 and preceding ladder side section 214, recess 216 is formd in position corresponding with locking projections 14, and In the rear stepped portion 223 of back casing 22, locating slot 226 is formd in position corresponding with positioning protrusion 15.

Therefore, when upper housing 10 is assembled and moved around the outside of lower case 20, if only in locking projections 14 and determined When position protrusion 15 is respectively aligned to recess 216 and locating slot 226, upper housing 10 can completely be moved upwards up to latched position.

Meanwhile as shown in figure 8, raised holding tank 316 and raised fixing groove 317 are by each other in the side of inner shell 30 It is adjacently formed.Raised holding tank 316 and raised fixing groove 317 all have shape corresponding with locking projections 14.However, convex The shape that holding tank 316 has bottom open is played, and raised fixing groove 317 has the closed shape in bottom.In raised holding tank Click feel protrusion is formd between 316 and raised fixing groove 317.

As described above, when locking projections 14 and positioning protrusion 15 are respectively aligned to recess 216 and locating slot 226, and work as Upper housing 10 is completely moved upwards up to latched position, behind the opening shape by the bottom of raised holding tank 316, is formed It is accommodated in raised holding tank 316 in the locking projections 14 in upper housing 10.Under this state, when upper housing 10 rotates, The inclined surface (see Fig. 6) of locking projections 14 in this way gets over the click feel between raised holding tank 316 and raised locating slot 317 Protrusion, locking projections 14 are fixed to raised fixing groove 317, fully secure upper housing 10 whereby.

Under this state, upper housing 10 move up through top shell 40 and stepped portion 213,223 is limited, and The rotation of upper housing 10 is limited by the left and right side of raised fixing groove 316 and wall.In addition, moving downward for upper housing 10 is fixed The close-shaped limitation in bottom of the raised fixing groove 317 of locking projections 14.

When upper housing 10 is fixed as described above, procapsid 21 is also limited by upper housing 10 and back casing 22.It is special Not, because upper housing 10 is fixed to cover lower case 20, procapsid 21 can also be securely held, and not need to make With individual screw thread.However, procapsid 21 can adequately keep jail because upper housing 10 only covers the top of lower case 20 Gu stationary state is tied in a manner of snap-fastener etc. if the bottom of procapsid 21 has a structure in which with the bottom of back casing 22 It closes.

Meanwhile in upper housing 10, through hole is formd in position corresponding with the opening portion 215 of procapsid 21 13.Through hole 13 is dimensioned such that, allows external cable to pass through it, and opening portion 215 is dimensioned such that, External cable is allowed to pass through it, while the locking projections 14 of upper housing 10 can be fixed in raised holding tank 316 and protrusion It is rotated between slot 317, is, the size of opening portion 215 can be longer than the size of through hole 13.

Such as Fig. 5, opening 215 is arranged on the side of right shell body 32 with such state, and wherein lower case 20 is connected to interior Portion's shell 30.Its function is the access of the movement in order to ensure external cable, and external cable can be logical by external cable Hole 322 is connected to the electric energy input connector 512 of control PCB 51, and can then be threaded through hole 13 and opening portion 215, Space across right shell body 32 and upper housing 10 simultaneously extends to outside.

Electric energy input connector 512 can be made of socket, and the terminal (not shown) of external cable can be inserted into socket.Make It is the replacement of external cable for convenience with the reason of terminal socket structure.For example, when air purifier of the invention is used for When automobile, 12V DC cigarette lighter socket can be used, but when air purifier is used in family or office, can make With 110V or 220V alternating current.Therefore, a possibility that replacing external cable is very high, and for this reason, external cable is excellent Selection of land is connected to control PCB 51 using terminal socket structure.

It should be noted that the direction of terminal insertion is vertical with the direction that external cable is drawn out.In other words, external cable Terminal is inserted into (horizontal direction) with diametrical direction, and the direction that external cable is drawn out is in downward direction.For this reason, such as The terminal of fruit external cable be "" shape, the inside of upper housing 10 can on the direction that terminal connects support terminals, and because This is also possible to prevent external cable abjection even external cable is pulled from outside.

The reasons why upper housing 10 and procapsid 21 are designed to the connection structure is to be able to only through separation upper casing Body 10 replaces the dust collecting filter 90 of air purifier 90 without using separating tool.Particularly, with above-mentioned lock Determine the opposite sequence of method, upper housing 10 is reversed rotation, and such locking projections 14 are deviate from from raised fixing groove 317, passed through Click feel is raised and returns to raised holding tank 316.Under this state, upper housing 10 is downwardly drawn out, as shown in Figure 5.It is this Under state, as shown in drawings, the part that dust collecting filter 90 is inserted into is exposed.Therefore, if only upper housing 10 is divided From dust collecting filter 90 can be readily replaced.

If the handle of dust collecting filter 90 is pulled, dust collecting filter 90 can be drawn out, such as Figure 10 institute Show, and under this state, only the filter component 93 in frame 91 can be replaced.

In addition, procapsid 21 can be dismantled from back casing 22, no after upper housing 10 is separated as described above It needs using separating tool.Therefore, as shown in figure 11, photocatalytic filter 80 and carbon mistake are replaced from the part of inner shell 30 Filter 70 be it is possible, the part by dismantle procapsid 21 expose.

Fig. 7-10 is that all external shells (upper housing, lower case and top shell) are separated by separation and carbon filter The perspective view for the inner shell 30 observed from several directions afterwards, and Figure 11 is that air purifier of the invention is on only Shell 10 and procapsid 21 separated in the state of perspective view.

About the inner shell 30 of air purifier of the invention, the front side of inner shell 30 has such front knot Structure allows all dust collecting filters 90, photocatalytic filter 80 and carbon filter 70 to be inserted into and pull out.Therefore, After upper housing 10 is separated, dust collecting filter 90 can pull dust to receive by the front of the exposure in inner shell 30 Collect the handle of filter 90 to replace.After procapsid 21 is separated, the positive photocatalysis of the exposure of internally positioned shell 30 Filter 80 can be drawn out.

As shown in FIG. 14 and 15, the catalyst member 81 in photocatalytic filter 80 has high hardness and brittleness, because It is by being sintered TiO in grill-shaped ceramic bases₂It obtains.Therefore, elastic buffer 82 is provided to surround catalyst Part 81 is not impacted with guard catalyst part 81, and allows catalyst member 81 and inner shell 30 close each other Connection.

TiO₂The problem of photocatalytic filter 80 of covering is that photocatalysis efficiency reduces at any time, because foreign substance is attached On the surface thereof.Despite the presence of this problem, filter will not be replaced frequently, be because of the expensive of it.Therefore, with mistake The relevant technology of the regeneration of filter is constantly developed.Therefore, optical catalyst filter 80 needs mountable/dismountable Structure is for replacing or regenerating.However, because photocatalytic filter 80 has a structure in which, wherein elasticity as described above is slow It rushes device 82 to cover around catalyst member 81, forms the hand for installing or removing photocatalytic filter 80 from inner shell 30 Handle, just as dust collecting filter 90, this is intractable.For this purpose, in the present invention, as illustrated in figures 7-11, inner shell 30 only procapsids 21 are nonopen, but a part of a front surface and a side surface extended from front side, when photocatalytic filter 80 When being inserted into inner shell 30, it is open so that the front surface of photocatalytic filter 80 and a part of side can be exposed. Due to the shape of inner shell 30, the two sides of photocatalytic filter 80 can be firmly grasped with hand, therefore photocatalytic filter 80 is held It changes places pull-out.

Electric connection structure in air purifier

Inside cable has been sequentially formed on the surface of the left shell 31 of air purifier according to the present invention with reference to Fig. 8 Through hole 312, inside cable through slot 313 and inside cable guiding groove 314.In addition, inside cable through-hole 315 is formed in inner shell The positive upper end of the fan containing section 301 of body 30.

Therefore, in order to from control PCB 51 to the inside cable that fan 60 and UV light emitting diode substrate 55 are powered from fixation Control PCB 51 on PCB fixed part 33 passes in succession through inside cable through hole 312, interior along the outside of inner shell 30 Portion's cable through slot 313 and inside cable guiding groove 314, and inside cable through-hole 315 is passed through, thus into inner shell 30 Inner space.Inside cable into inner space is connected to the fan 60 that the lower part of inner shell 30 is arranged in, and further Extend to be connected to UV light emitting diode substrate 55.In air purifier of the invention, inside cable passes through fan incorporating section Divide the inner space of the 301 entrance inner shell 30 of inside cable through-hole 315, it is logical between exterior space and inner space Road, and therefore inner shell 30 keeps airtight conditions, thus further increase efficiency that air stream accelerated by fan 60 (if The other parts of inner shell 30 are perforated, and inside cable is inserted into the part, then the part flowed in inner shell 30 is empty Gas can be flowed out by the gap between perforation and inside cable).

When seeing, it appears that inside cable readily can enter inner shell by the discharge portion 34 of inner shell 30 30, discharge portion 34 is arranged adjacent to control PCB 51.However, because the air flowing access in inner shell 30 is received by dust Collection filter 90 and photocatalytic filter 80 are blocked, and the route by discharge portion 34 is impossible (if cable is by being somebody's turn to do The air of route setting, inner shell 30 will be bypassed around cable, and therefore the air cleaning efficiency of clarifier will necessarily drop It is low).In addition, as described above, the positive filter of inner shell 30 can be replaced.Therefore, in the present invention, internal electricity Cable is connected according to above-mentioned route by the side of inner shell 30.

As shown in Figure 10, inside cable through hole 312 and external cable through-hole 322 are positioned away from filter pull-out direction Direction on two sides.Therefore, as shown by the broken line in fig. 9, inside cable and external cable are connected to inner shell 30 Left and right side route.This structure significantly increases the utilization rate of the inner space of air purifier according to the present invention, Inner space is very little, and should have the structure for connecting and dismantling filter in its front, and therefore of the invention Air purifier can be made more compact.

Flow passage in air purifier

Figure 12 is showing the perspective view of air purifier according to the present invention, in the state in which, top shell 40, upper housing 10, back casing 22 and left shell 31 are removed, and Figure 13 is the perspective view of air purifier according to the present invention, Itself in the state in which, wherein top shell 40, upper housing 10, back casing 22 and right shell body 32 are removed.

The flow passage of air purifier according to the present invention is as described below.Front housing is passed through by the negative pressure that fan 60 generates Space of the air that the air-inlet grille 212 of body 21 sucks across lower case 20 and inner shell 30, and it is inhaled into fan 60 Suction part 61, pass through the carbon filter 70 and air intlet 302 of the two sides of the lower part of inner shell 30.Then, air from Discharge portion 63 is discharged upwards by fan 60, is equably divided by movement-oriented device 37 and streamlined diverging duct 381 With pipeline configuration is entered, and move up.

When air moves up, movement-oriented device 37 is turned forward with streamline-shaped, and UV shines when its is upward Diode substrate 55 slight inclination, the irradiation direction of the UV light emitting diode on substrate 55 upwards do not deviate photocatalysis substantially In the range of filter 80.As can see in Figure 13 and 2, substrate 55 is set as flowing with the air that inner shell 30 is formed Pipeline is spaced apart, and the flowing of such air can be naturally oriented to, and reduces the kinetic energy rejection of air stream whereby.

With reference to Figure 12 and 13, streamlined diverging duct 381 is had a structure in which, when its forward when its diameter gradually become Greatly.Conversely speaking, by by air-inlet grille 212 from exterior guiding enter lower case 20 air have flow passage, when its to The air intlet 302 that provides of lower part of inner shell 30 when advancing, flow passage is become larger by streamlined diverging duct 381. In other words, the function of streamlined diverging pipeline 381 is the area of section for increasing the air flowing access in inner shell 30, also Increase the area of section of the air flowing access in the space between lower case 20 and inner shell 30.It is according to the present invention to be somebody's turn to do Air flow structure and pipeline configuration allow air purifier to be made compact, while minimizing the loss of air stream.

Then, it is guided by the air stream that fan 60 moves up by above structure, passes through shape in photocatalytic filter 80 At multiple through-holes, and then pass through dust collecting filter 90.

It should be noted that UV light emitting diode substrate 55 is placed on the lower part of inner shell 30, the position and lower case 20 A part it is highly relevant, the part has relatively small diameter, and photocatalytic filter 80 and dust collecting filter 90 are arranged on the top of inner shell 30, and the position is highly relevant with upper housing 10.In other words, according to the present invention, interior The diameter of portion's shell 30 also increases at the height of the stepped portion between lower case 30 and upper housing 10, and UV shines Diode substrate 55 can be prepared into relatively small, and can be placed on photocatalytic filter 80 at a distance, set It sets in the small diameter portion of inner shell 30.Photocatalytic filter 80 can be made into slightly larger, in order to maximize ingress of air Area, be arranged in the increase diameter portion of inner shell 30, and the inside of dust collecting filter 90 will be frequent Air pressure, which occurs, to be reduced, and the increase diameter portion of inner shell 30 is also disposed at, to increase the section face that air passes through filter Product.It can be seen that this structure of the invention is can to dramatically increase air cleaning effect when manufacturing compact air purifier The structure of rate.

Air by filter 80 and 90 is directed to discharge portion 34 by streamlined diverging duct 382, and is arranged It is put into outside.

Streamlined diverging duct 382 is formed as streamline-shaped, to reduce the area of section of air flowing, while reducing sky The loss of flow of air.It in the upper space of streamlined diverging duct 382, is provided by the shape, may be used as PCB fixed part 33.Control PCB is fixed to PCB fixed part 33, and such air purifier can be operated, while its mode of operation can be Top is examined.The purpose of air purifier of the invention is assembly and is used in cup holder.It can be seen that the top of air purifier There are the presence of operation button, and the air emission direction being outwardly directed at the top of air purifier in portion, preferably makes with the present invention The state of used time is identical.Streamlined diverging duct 382 can reduce air flow losses, and guidance air stream reaches narrow exhaust Part, and ensure that the space that control PCB 51 is placed, make air purifier more compact by these.

Meanwhile UV ray barrier plate 39 is set below discharge portion 34, to stop UV light from UV light emitting diode substrate 55 are emitted to outside by discharge portion 34.Therefore, UV ray barrier plate 39 can eliminate user to the adverse effect of UV light Misgivings.

About the position and direction that air in air purifier of the invention is inhaled into, air access portion is arranged on down It the top (below the stepped portion of upper housing 10 and lower case 30) of shell 20 and is oriented to forward.About from air purifier The position and direction of air are discharged, air discharge portion, which sets up separately, to be set in top shell 40 and be upwardly directed.When entering part and discharge Part is configured to be spaced apart away from each other, and is oriented to different directions as described above, and purified discharge air is prevented from It is again introduced into induction part.

In view of the fact that, acetaldehyde and acetic acid are decomposed by air purifier, heavier than air therefore deposit, empty Gas entering part is arranged in lower case 20, so that air purification efficiency further increases.

In addition, air-inlet grille 212 is formed in the upper of lower case 20 because air purifier of the invention is intended for use in cup holder Portion, to suck air to be clean.In narrow space between lower case 20 and inner shell 30, streamlined diverging is formd Pipeline 381 and air intlet 302, air enter inner shell 30 by air intlet 302, and air intlet 302 is arranged below On the two sides of streamlined diverging duct 381, on the diverging direction in streamlined diverging duct 381 and in vertical direction, so that Minimize air flow losses.The area of section of air flowing in inner shell 30 is also by streamlined diverging duct 381 It is guaranteed.In these areas, it can be seen that realize the air flowing for being most suitable for size and state for air purifier Access.

The arrangement of air purifier filter

The sequence that filter in air purifier according to the present invention is arranged according to air flowing access, air are worn first Carbon filter 70 made of prefilter 72 and active carbon is crossed, to filter out dust and the absorption in air with bulky grain size And remove noxious material (for example, ammonia and acetic acid).Then, acetaldehyde and ammonia and acetic acid are by the light-catalyzed reaction of photocatalytic filter 80 Degradation.Next, air the dust collecting filter 90 made of fabric filter etc. to remove fine dust, and connect Be discharged.

The function of prefilter 72 is that pre-filtering falls big dust granule to prevent foreign substance such as dust to be attached to whereby On photocatalytic filter 80, the attachment of dust reduces the efficiency of photocatalytic filter 80.Moreover, the function of active carbon is to absorb Ammonia and acetic acid are to increase the degradation efficiency of acetaldehyde, and in the competitive reaction caused by photochemical catalyst, the reaction of acetaldehyde is than ammonia and second Sour evening (acetaldehyde is not easy to be absorbed by the activated carbon).

Nevertheless, it should be recognized that the dust collecting filter 90 that maximum pressure drop occurs inside it is arranged on photocatalysis The downstream of filter 80 further increases photocatalysis to increase the pressure of the air stream contacted with photocatalytic filter 80 whereby The efficiency of 80 ingress of air of filter.

Moreover, in the present invention, the UV light emitting diode 57 for photo catalytic activation is arranged on photocatalytic filter 80 Upstream, such UV light can be from the front of photocatalytic filter 80 (that is, photocatalytic filter 80 faces UV light emitting diode 57 surface) irradiation photocatalytic filter 80.In this case, light-catalyzed reaction will be from the front of photocatalytic filter 80 and neighbour Nearly positive surface takes place, and before the air pressure drop when passing through photocatalytic filter 80 occurs, is further increased by this Photocatalytic filter 80 is degraded the efficiency of toxic gas.In addition, this arrangement can be such that dust collecting filter 90 directly sets It sets in the downstream of photocatalytic filter 80, so that air purifier is more compact.In addition, the UV light-emitting diodes for sterilization Pipe 56 is also disposed on UV light emitting diode substrate 55 of the invention, will be irradiated for the UV light of sterilization to being set up directly in this way On the dust collecting filter 90 in 80 downstream of photocatalytic filter, kill whereby be filled by dust collecting filter 90 it is micro- Biology and germ.Therefore, in this case, germicidal efficiency is significantly higher than the effect of the sterilization in the case that UV light only irradiates air stream Rate.In addition, the UV light emitting diode for photo catalytic activation and the UV light emitting diode setting for sterilization are on a single substrate, This makes structure simple.

In addition, when UV reflecting plate (not shown) be arranged in inner shell 30 inside photocatalytic filter 80 and UV shine When between diode substrate 55, the UV light irradiated to the inside of shell 30 can be reflected to photocatalytic filter 80, pass through this Further improve the efficiency of deodorization and sterilization.

Relationship between photocatalytic filter and UV light emitting diode

Figure 14 is the perspective view of the arrangement of photocatalytic filter 80 and UV light emitting diode substrate 55 and Figure 15 is photocatalysis The top view of filter 80.

With reference to Figure 14, the central part of UV light emitting diode substrate 55 is arranged on for the UV light emitting diode 56 of sterilization On, and be arranged for three UV light emitting diodes 57 of photo catalytic activation around UV light emitting diode 56.Particularly, it is urged for light The UV light emitting diode 57 for changing activation will irradiate UV light towards photocatalytic filter 80.

As shown in figure 15, photocatalytic filter 80 includes: catalyst member 81, is covered on by sintering with cage TiO on the ceramic porous material of pattern₂(titanium dioxide) obtains；With the elastic buffer of the side of covering catalyst part 82。

It is expected that catalyst member 81 front (that is, in face of for photo catalytic activation UV light emitting diode 57 surface) and The distance between UV light emitting diode 57 for photo catalytic activation will change according to the variation of the flow behavior of air, as The distance between UV light emitting diode substrate 55 and photocatalytic filter 80 and UV light reach the area and spoke of catalyst member 81 The function of illumination.Expect to be tested in view of this, and as a result, it can be seen that, in this case, wherein square The length (l) of the side of shape photocatalytic filter 80 is 5.5cm, when the front of light source 57 and photocatalytic filter 80 is (that is, face The surface of UV light emitting diode 57 for photo catalytic activation) the distance between be 2.5cm when, the effect of sterilization is best, and works as When distance is reduced to 2cm or less or increases to 3cm or more, the effect of sterilization can quickly degenerate.

As the distance between the front of light source 57 and photocatalytic filter 80 too small (2cm or less), the light of UV light irradiation The area of the part of catalytic filter 80 is reduced, however it reaches saturation state, and wherein the efficiency of photo catalytic activation is not further added by, Even if (the UV irradiation level phase for the Figure 16 that sees reference when the irradiation level of the UV light on the per unit area of photocatalytic filter 80 increases Experiment is closed, will be later described).When UV light emitting diode substrate 55 is too close to photocatalytic filter 80, air cannot The central area (place that UV light mainly irradiates) of photocatalytic filter 80 is readily flowed into, and therefore contacts photo catalytic activation The amount for being easiest to the air in the region occurred is reduced.

In addition, as the distance between front of light source 57 and photocatalytic filter 80 too big (3cm or more), photocatalysis The irradiation level of UV light is reduced to reduce the degree of photo catalytic activation, and the air stream between the two on the unit area of filter 80 It is stable for moving, and shows as laminar flow, shows that contacting the air capacity that photocatalytic filter 80 shows is reduced.

Meanwhile when the length (l) of the side of filter is 4-7cm, the effect of deodorization is good.If the one of filter When the length of side is 4cm or less, irradiation to the region of not filter, is illustrated that UV light is wasted, and if filter by UV light The length of side when being 7cm or more, by occur the irradiation of UV light less than region, illustrate that filter material and space are wasted.

Meanwhile finding when the voltage of the electric energy of supply UV light emitting diode 57 is 5V or less or electric current is 200mA or less, The transmitting of light substantially reduces, and demonstrates the need for using additional UV light emitting diode, and when the voltage of electric energy is 15V or more or electric current When for 300mA or more, even if the transmitting of light will not continue growing when electric energy increases.

Meanwhile the inventors have discovered that the variation of the deodoriging properties of photocatalytic filter 80 depends on catalyst member 81 The shape of the chamber of interior formation, the width (g) of each chamber, the thickness (t) of frame between chamber, catalyst member 81 side length It spends, the direction of the quantity (n) of the chamber of catalyst member, the height (h) of catalyst member, air stream (forward or reversion), urge The sintering temperature of agent part 81 and time, for photo catalytic activation UV light emitting diode 57 peak wavelength and reach catalysis The irradiation level of the positive UV light of agent part 81.

Figure 16 is showing the acetaldehyde of the function of the irradiation level as the positive UV light for reaching catalyst filter 80 The figure of degradation.

Firstly, the irradiation level of the positive UV light of the variation and arrival catalyst member 81 of the deodoriging properties of photochemical catalyst Variation is detected repeatedly.As a result, it can be seen that when the UV irradiation level of the unit area of photocatalyst surface is 14.67mW/cm² When following, the deodorizing rate of photochemical catalyst increases with the increase of UV irradiation level, but when UV irradiation level is higher than 14.67mW/cm² When, deodorizing rate is not further added by.Particularly, this trend is consistent, no matter the width (g) of each chamber 83, chamber frame thickness (t), the length, the quantity (n) of the chamber of catalyst member, the height (h) of catalyst member of the side of catalyst member and catalysis The sintering temperature of agent part 81 and time.

In addition, repeat test the result shows that, when photocatalyst surface unit area UV irradiation level be lower than 10mW/ cm²When, the deodorizing rate of light-catalyzed reaction reduces rapidly, it may be possible to because the amount of light is not sufficient enough, and work as photocatalyst surface Unit area UV irradiation level be higher than 20mW/cm²When, the electric flux for enhancing UV irradiation level increases, but is urged by light The deodorizing rate for changing activation is not significantly increased.

Figure 17 is showing the figure of the UV absorptivity of the photocatalytic filter 80 as the function of UV wavelength and Figure 18 is aobvious The figure of the removing speed of the acetaldehyde under different UV wavelength is shown.

It can see in Figure 17, light is urged about the UV absorptivity of photocatalytic filter 80 as the function of UV wavelength The UV absorptivity of change filter 80 highest in wavelength about 270nm, and linearly reduced when wavelength increases to 400nm.However, It can be seen that the peak wavelength of the UV light emitting diode used, it is 365nm that photocatalysis efficiency, which reaches highest peak wavelength,.This is Because of the luminous efficiency of UV light emitting diode.When the peak wavelength of UV light emitting diode is reduced, emit from UV light emitting diode Light reduce rapidly.Therefore, in order to provide suitable UV irradiation level, to use the UV light emitting diode with low peak wavelength Photocatalytic filter 80 surface need, it should use a large amount of UV light emitting diode.However, in this case, substrate The increase of 55 size is restricted, and due to the flowing of air, and cost increases sharply.In view of the fact that tested.Experiment The result shows that, when the use of there is peak wavelength being 340nm UV light emitting diode below, the deodorization of photocatalytic filter 80 Efficiency is reduced rapidly.

Moreover, when the use of there is peak wavelength being the UV light emitting diode of 380nm or more, the UV absorptivity of photochemical catalyst It is significantly reduced to be similar to the level of conventional visible blue light, shows that the use of the UV light emitting diode is not so significant.

In addition, experiment the result shows that can be most with the use of UV light emitting diode that peak wavelength is 360-370nm The deodoriging properties of big photocatalysis filter 80.

Figure 19 is showing the figure of the acetaldehyde removing speed of two photocatalytic filters 80 with different height (h), and Figure 20 is showing the figure of the acetic acid removing speed of two photocatalytic filters 80 with different height (h).

Experiment the result shows that, photocatalytic filter 80 have shape shown in figure 15 in the case where, photochemical catalyst Surface area, due to the frame between the chamber of photocatalytic filter thickness (t) and increase, have substantially no effect on photocatalysis The odor removal efficient of filter 80, but the height of photocatalytic filter 80 influences the inner wall area of interior air flow passage, because This directly affects the contact area of air.

Thus, it can be seen that when the height of photocatalytic filter 80 is 5-10mm, the deodorization effect of photocatalytic filter 80 Rate is highest.In addition, photocatalytic filter 80 is difficult with when being highly reduced to 2mm or less, because of its faint intensity, And when height be 15mm or more when, only air drag increase, UV light cannot reach photocatalytic filter 80 back part or Its density becomes very thin, and therefore increases only cost without can increase odor removal efficient.

It can be seen that air drag not will increase, and by filter itself when the width (g) of each chamber 83 is 2mm The shaded area ratio that shape has blocked the inner wall of photocatalytic filter 80 caused by UV light of the irradiation to it is not high, indicates 2mm Chamber width be most suitably adapted for maximizing the UV light irradiated area ratio of the inner wall of photocatalytic filter 80.Meanwhile when chamber is wide When degree is reduced to 1mm or less, air drag increases, and the UV light quantity for reaching inner wall is reduced, and shows that odor removal efficient is low.In addition, chamber is wide When degree is 4mm or more, since the low entire area for leading to inner wall of the density of chamber 83 is reduced, show that odor removal efficient is low.

About chamber density relevant to the above-mentioned width (g) of each chamber, when chamber density lower than 30 chambers/square inch or When less, chamber width increases to 4mm or more, and inner wall area is reduced, and shows that odor removal efficient is low.When the density of chamber be 260 chambers/square Inch or more when, chamber width be reduced to 1mm hereinafter, air drag increase, and reach inner wall UV light reduce, show deodorization imitate Rate is low.When chamber density is about 100 chambers/square inch, air drag does not increase, and is blocked by the shape of filter itself The shaded area ratio of the inner wall of filter caused by UV light of the irradiation to it is not high, shows odor removal efficient highest.

Frame thickness (t) about chamber the experimental results showed that, when frame thickness is 0.3mm or less, TiO₂Layer becomes It is too thin, and therefore photocatalysis efficiency is reduced, intensity is inadequate.When frame thickness is 1.2mm or more, material consumption increases but does not have There is increase photocatalysis efficiency.In addition, the photocatalysis efficiency highest when frame thickness is 0.6mm.

Figure 21 is the figure for showing the deodoriging properties of photocatalytic filter 80, by by 2gTiO₂What sintering obtained for 1 hour, Sintering temperature is different；Figure 22 is the figure for showing the deodoriging properties of photocatalytic filter 80, by by 2.5g TiO₂It is small to be sintered 1 When obtain, sintering temperature is different；It is the figure for showing the deodoriging properties of photocatalytic filter 80 with Figure 23, by 400 DEG C By 2.5g TiO₂Sintering different time obtains, and sintering time is different.

As shown in figures 21-23, when sintering temperature is 350-450 DEG C, deodoriging properties are good, and when sintering time is 1- At 2 hours, there is no problem for the deodoriging properties of photocatalytic filter 80.It can be seen that when considering the variation of temperature, sintering temperature It is 400 DEG C, is sintered and is not enough if sintering time is shorter than 1 hour, and if photocatalysis is filtered when sintering time is too long The deodoriging properties of device 80 can reduce rather than increase, therefore are sintered and preferably carry out 1-2 hours.

As described above, air purifier according to the present invention be it is compact, energy consumption is few, and has brilliant purification air energy Power.

Air purifier according to the present invention is compact, at the same collect in dust, be demonstrated by terms of deodorization and sterilization it is good Good effect.

Air purifier according to the present invention has the shape and compact dimensioning for being suitable for placement in cup holder, and has design To provide the firm internal structure of the outer shape.

Air purifier according to the present invention is dismantled in a simple manner, allows the separating and filtering in a manner of most disassembled simply Device, convenient for safeguarding and repairing, and allow filter convenient for safeguarding and repair.

The present invention blocks the irradiation of UV light to outside, therefore reduces the misgivings about ultraviolet radiation.

The present invention provides the positions effectively connected for determining a compact and complicated internal structure, and therefore originally The air purifier of invention is easily manufactured, safeguards, repairs and uses.

In addition, shell structure according to the present invention allows external cable easily to replace, and inside cable is prevented to deviate from Or it is damaged.

Although it have been described that different embodiments, but those skilled in the art, which should be recognized that the embodiment described, is only For exemplary.Therefore, the scope of the present invention should not necessarily be limited by the embodiment described.

Claims (10)

1. a kind of air purifier, comprising:

Upper housing；

The diameter of lower case, lower case is less than the diameter of the upper housing, and the lower part of the upper housing is arranged in；With

Inner shell is fixed in the upper housing and lower case, so that inner shell and the upper housing and lower case interval It opens；

Wherein, the side on the top of the lower case has air-inlet grille, and air is inhaled into the lower case by air-inlet grille, The lower part of the inner shell has air intlet, and air stream enters inner shell by air intlet, and inner shell Top has discharge portion, and air is discharged by discharge portion,

Wherein, the inner shell includes the first streamlined diverging duct, and the first streamlined diverging duct is designed to make The area of section of the air flowing access in the space between lower case and inner shell is obtained on the direction towards air intlet Become larger.

2. air purifier according to claim 1, further comprises: fan is fixed on the lower end of the inner shell,

Wherein, the fan has discharge portion, is designed to air discharge being upwardly into the inner shell, and described Inner shell includes fan containing section, and the first streamlined diverging duct is arranged above fan containing section, and institute Stating the first streamlined diverging duct is designed so that the area of section of the intracorporal air flowing of inner shell since discharge portion It is gradually increased.

3. air purifier according to claim 2, wherein the inner shell includes: the exhaust portion in the fan Movement-oriented device above point, is designed to for air to be diffused into the first streamlined diverging duct.

4. air purifier according to claim 2, further comprises: UV light emitting diode substrate is arranged first-class It is above line style diverging duct and spaced apart with the first streamlined diverging duct, and be arranged in the following manner: UV hair Optical diode substrate is tilted according to the streamline-shaped of the first streamlined diverging duct.

5. air purifier according to claim 2, wherein the fan has suction part, and suction part is formed in Opposite left and right side, and the air-inlet grille is formed in the front of lower case.

6. air purifier according to claim 1, wherein the lower case is made of procapsid and back casing, front housing Body and back casing are separated from each other, and the procapsid is designed to: when the procapsid is separated, being arranged in air intlet Carbon filter be externally exposed.

7. air purifier according to claim 6, wherein the inner shell is made of left shell and right shell body, left Shell and right shell body are separated from each other.

8. air purifier according to claim 1, wherein the top of the inner shell includes the second streamlined diverging Pipeline, the second streamlined diverging duct are designed to air stream being oriented to discharge portion.

9. air purifier according to claim 8, wherein the inner shell includes: in the second streamlined exhalant PCB fixed part above road is designed to be used as fixed control PCB.

10. air purifier according to claim 9, further comprises: top shell, fixed to PCB fixed part Top, and it is designed to covering control PCB, and the outer peripheral lower end of top shell and the upper end of upper housing connect.