CN1030820C - Portable room air purifier - Google Patents

Abstract

A portable and compact room air purifier having an internal filter element through which air is drawn by a centrifugal fan and wherein the air is discharged generally uniformly and radially by passing between at least one generally arcuate scroll and a surrounding deflector. The purifier is automatically deactivated in the event of destruction or removal of the filter housing.

Description

Portable room air purifier

The present invention relates to portable indoor air cleaner, be particularly related to a kind of small-sized portable indoor air cleaner, in this air purifier, air outlet by a scroll sheet after having passed through a filtration members is discharged from, exit at scroll sheet, air is tangentially derived with respect to the rotation of a centrifugal fan, and employed centrifugal fan is used to transmit air, makes air from wherein passing through.An outer training wall is installed in and the wall of described scroll sheet place separated by a certain interval, and the wall that is somebody's turn to do outer training wall and scroll sheet converges gradually, thereby formed a tapered channel, air by this tapered channel generally along the radially discharge of this air purifier.In most preferred embodiment, said filtration members is the HEPA filtration members of a drum, and this filtration members is installed in the lid.One motor is installed in the cylindrical center place of this filtration members, is used to drive above-mentioned centrifugal fan.Designed training wall provides a ringwise substantially opening, and air is discharged from above-mentioned opening when air is guided around the base of this clarifier.

In most preferred embodiment, lid relies on a fixing electric installation to carry out interior the connection with base, with loosening under the situation about removing or under lid and the not sealed situation of base or at lid and therefore removed under the situation of lid with respect to the pressure of base and do not providing power, safe with regard to having guaranteed like this, eliminated owing to unexpectedly contact any possibility that centrifugal fan damages to motor at Jiang Gai.

In certain embodiments, with two or more scroll sheets and/or training wall air is evenly distributed around air purifier.

People for the demand that purifies the air in family room and the workplace in continuous increase, particularly in the urban district, the pollution level of air has exceeded the index of defined, affect the healthy of people, this just need improve people's live and work environment by removing harmful substances in air.

The air that pollutes makes people easily suffer from respiratory infectious disease and other disease, particularly impairs the health that those are suffered from allergy or suffer from the people of asthma.Show that the very serious sign of pollution level is: the eyes of burning, suffer from nasal catarrh, throat disease, headache, dizzy, cough and sneeze.This part people often sucks hair, coal ash and the detrimental substance of dust in dust, cigarette, pollen, the casting process, acid, bacterium, virus, animal.

In order to alleviate air pollution, a lot of offices and family room all adopt central filtration system to remove airborne various deleterious particle.Regrettably, so economic and practical center system is eliminated airborne particle and is no more than 80% to 85%, and only 1 micron or bigger particle is worked.

Cause people to create a kind of special filter element for the demand that purifies air, this filter element is defined as the HEPA filtration members.HEPA is the abbreviation of High Effciency Particulate Air Filters, and the HEPA filtration members is high-effect air particles filtration members, and the minimum filterability of this filtration members is 99.97%.Industrial is to define the HEPA filtration members like this, that is: these filtration members are 99.97% to being suspended in airborne particulate filtration rate, and the particle that is filtered is of a size of 0.3 micron or bigger.

Though the HEPA filtration members of initial design is to be used in laboratory, electronic workshop, biotron, hospital and the similarly super clean environment, but people used this HEPA filtration members with portable construction afterwards, and the HEPA filtration members of this portable construction can be used in single room.

In U.S. Pat 4,629, a kind of portable HEPA indoor air cleaner is disclosed in 482, this clarifier makes the air that filtered have special purposes aspect the distribution equably, and designed this clarifier can provide an index signal when cartridge filter gets clogged and should change cartridge filter.This clarifier comprises a HEPA filtration members cylindraceous, so that increase the whole surface area of filtering material, said filtration members is installed in the housing with annular row gas port, and the base of said annular row gas port and this clarifier is adjacent.With a centrifugal fan air is drawn out of after having passed through a filtration members, and the air of extraction is radially outward discharged from above-mentioned annular row gas port.Since on this clarifier contour structures, need the base of this clarifier is spaced apart with the main body that cylindrical filter pack is housed, and this just needs design this clarifier bigger than the desired optimum structure of certain user.

In view of the foregoing, just need overcome portable air purifier in the middle of the above-mentioned prior art in the defective aspect the physical size by a kind of small-sized portable indoor air cleaner is provided, but can not influence the original performance of this clarifier, with at an indoor filtered air and this air is evenly distributed.

The present invention relates to the small portable indoor air cleaner, this clarifier has a housing, one filtration members is placed in this housing, thereby UNICOM's air intake and air outlet slit, a centrifugal fan is by motor-driven in described air purifier, thereby inwardly promotes air and towards outlet air is discharged by inlet.This portable air air purifier also comprises at least one scroll sheet, and the orientation of this scroll sheet makes air tangentially to derive from centrifugal fan by the axis with respect to centrifugal fan by the discharging of scroll sheet.One training wall is at interval with respect to above-mentioned floss hole to be installed, and this training wall slopes inwardly with respect to scroll sheet and forms a unlimited tapered channel with it, and when air was discharged by above-mentioned air outlet slit, air passed through described tapered channel and leading.

In certain embodiments, scroll sheet with a single arc makes air discharge towards an annular training wall, this annular training wall extends around scroll sheet and slopes inwardly and form taper towards scroll sheet, this tapering point is away from the floss hole that is formed by scroll sheet, thereby feasible part of air of being discharged is guided around this clarifier when discharging from clarifier.In further embodiments, adopted two or more scroll sheets, every scroll sheet is all curved.In this manner, constitute two floss holes at least by scroll sheet, these at least two floss holes and training wall are at a distance of certain intervals, thus formation transmission passage separately, and air is discharged from filter by these passages.

In most preferred embodiment, housing is columnar, thereby formed passage also is an arc between scroll sheet and training wall, makes air discharge round the whole circumference of this device thus.

Portable indoor air cleaner of the present invention also comprises a columnar HEPA filtration members, and this filtration members is installed on the supporting member that is seated on the scroll sheet.A motor that is used to drive centrifugal fan is installed in the middle position of cylindrical filter pack, thereby makes the compact conformation miniaturization of this clarifier.

In order to ensure the energy safety operation in child's occasion is arranged of this clarifier, said housing has a lid, this lid and base rely on a fixing safety device and carry out interior the connection, thereby not sealed or stop providing power to motor under the situation such as loosening or cracking with respect to base with base at lid.

Main purpose of the present invention provides a kind of very small-sized portable indoor air cleaner, in this air purifier, air is radially outward discharged round the whole circumference of this device, carries out the residing zone of work thereby make the air that has filtered be distributed in this clarifier equably.

Another object of the present invention provides a kind of portable small-sized indoor air cleaner, this air purifier has economic and practical structure, thereby applicable to consumer widely, simultaneously, in this air purifier, designed device can be removed lid people and attempt to contact under the situation of inside of this device and prevent motor and centrifugal fan running; Perhaps, in case housing is damaged, this device quits work automatically.

A further object of the invention provides a kind of small portable indoor air cleaner of compact conformation, this air purifier comprises a columnar HEPA filtration members, and this filtration members can be removed 0.3 micron or bigger particle in the room air effectively with 99.97% ratio.

Fig. 1 is the top perspective view of most preferred embodiment of the present invention.

Fig. 2 is the cross section view of getting along the filter shown in Fig. 1.

Fig. 3 is the assembled view of the portable indoor air cleaner shown in Fig. 1.

Fig. 3 A is the local assembled view of safety switch, lid and the base thereof of the indoor air cleaner shown in the exterior view 1.

Fig. 4 is the plan view from above of the bottom of the portable indoor air cleaner among Fig. 1, the figure shows out a pair of scroll sheet that is associated with a public training wall.

Fig. 5 is the schematic partial cross-sectional view of another embodiment of the present invention.

Fig. 6 is the local assembled view of indoor air cleaner shown in Figure 5.

Fig. 7 is the cross section view along the 7-7 line among Fig. 5.

Referring to accompanying drawing, small portable indoor air cleaner 10 of the present invention comprises a lid 11, and this lid 11 is installed on the base 12 selectively.One " on-off " (" ON-OFF ") and speed control unit 13 penetrate the top of covering 11 central part, and, this control device 13 comprises an operating grip 14, and this operating grip 14 is positioned in the middle of the groove 15, thereby this handle 14 is flushed substantially with the profile of the upper surface of lid 11.In the embodiment shown in Fig. 1-4, lid 11 is molded into two parts, and these two parts are assembled into together along sealing wire 16.This lid 11 comprises the lug 17 that plurality of outward is extended, and these lugs 17 have defined several air intakes 18, have also defined several air outlet slits 19.Vertically and spaced apart on the horizontal direction, air outlet slit 19 is adjacent to the bottom of lid and round the bottom of lid to air intake 18 round the top of lid.As shown in the figure, set air intake 18 and air outlet slit 19 are distributed in and cover 11 whole circumference.Vertically the rib 20 that extends is Unitarily molded with 17 one-tenth of horizontal lugs, and by means of these ribs 20 that vertically extends, horizontal lug 17 is strengthened in the interval part around the circumference of lid 11.

Being installed in what cover 11 inside is a carriage assembly 21, and this carriage assembly 21 has bottom 22 annular, that have opening and some and vertically extends and isolated legs 23.This carriage assembly 21 also comprises a superposed electrical equipment box 24, and " on-off " and speed control unit 13 are installed in this electrical equipment box 24.Control device 13 electrically connects by an electric wire (not shown) and a motor 26.This motor 26 is draped by means of several pass the pin 27 of opening 28 and is fixed on the carriage assembly 21 by means of traditional tightening member or is welded on the carriage assembly 21, and said opening 28 is positioned on every leg 23 of carriage assembly 21.Generally motor 26 is installed in and covers on 11 the center, motor 26 comprises a driving shaft 29, and driving shaft 29 stretches to the bottom 12 of this device downwards.General cylindric HEPA filtration members 30 be looped around motor 26 around and be fixed between the circular bottom part 22 that covers 11 top and carriage assembly 21.This HEPA filtration members 30 comprises up and down lip ring 31, and sealing part 31 is made by elastomeric material.The structure of filtration members 30 can be diversified, yet, in general, this filtration members 30 preferably includes several as U.S. Pat 4,629, the pleat section of 482 disclosed the sort of vertical extensions, the theme of said U.S. Pat 4,629,482 is included in this as a reference.

Centrifugal fan 32 is installed on the driving shaft 29 of motor 26, and this centrifugal fan 32 comprises several radially spaced blades 33.Should be noted in the discussion above that term " centrifugal fan " comprises the fan of industrial known other form, for example prone arc and sweptback fan, and the structure of fan can change, and these all can not be separated with inventive features of the present invention.As shown in Figure 2, centrifugal fan 32 is placed in the cavity 34 that is defined by bottom 12.

Base 12 comprises the sidewall 36,37 of a diapire 35 and a pair of annular, and this sidewall 36,37 has constituted a groove that is generally the U type, and this U type groove is molded on 38, thereby formed one this air purifier is mentioned used handle.Base 12 also comprises the training wall 40 of an annular, and this training wall 40 extends upward and end at circular bottom part 22 with carriage assembly 21 at a distance of certain intervals from diapire 35.Between training wall 40 and sidewall 37, formed an annular seating 39.Training wall 40 extends along the loop line (axis of this annulus is positioned at the central point of diapire 35) in the imagination.A pair of scroll sheet 41,42 extends upward and is positioned at the space that training wall 40 is enclosed from diapire 35, and every scroll sheet comprises first end and second end 43,44,45,46 respectively.The end of scroll sheet 41,42 is adjacent one another are and at a distance of certain intervals, thereby has formed floss hole 47,48, and by this floss hole 47,48, air is tangentially derived with respect to the rotation of centrifugal fan.Each piece scroll sheet 41,42 generally is the circular arc shape, but they do not need to be bonded into a circle, so end 43 and 46 can outwards be opened from an accurate positive loop line.Referring to Fig. 2 as can be seen, scroll sheet 41 and 42 is located to extend upward above the upper edge of training wall 40, and in an illustrated embodiment, scroll sheet 41 and 42 circular bottom parts 22 for carriage assembly 21 provide supporting.

Especially referring to Fig. 4, position relation between scroll sheet 41,42 and the training wall 40 is such, that is: that between them, formed a pair of arc and inwardly narrow down and tapered passage 49,50 gradually, each bar passage along its whole length direction, open wide along its upper area, so that be connected with the air outlet slit 19 that in lid 11, forms.By this way, when air shown in the arrow among Fig. 4 when floss hole 47,48 discharges, the specific part of air will be by adjacent air outlet slit 19, and discharged immediately, and portion of air will be imported into passage 49,50, one end of passage 49,50 is shrink form, therefore forces air to make progress, discharge by the downstream of air outlet slit 19.By this way, the air of Radial Flow evenly outwards distributes ground from air outlet slit 19 discharges.If there is not this position relation between scroll sheet and the training wall, then air will directly discharge from device along both direction shown in the dotted line that extends out from floss hole 47,48 among the figure, and such air flows can not be in the uniform air-distribution of indoor formation.

The structure of embodiment shown in Fig. 1-4 comprises two scroll sheets and an independent training wall, so that the moving air of discharging from equipment therefor is distributed in the surrounding space of this device equably, should be noted that, be subjected to the instruction and the inspiration of Fig. 1-4 illustrated embodiment, people also can realize above-mentioned this air-distribution with a scroll sheet and a training wall in some cases, and in other cases also can with three, four or more polylith scroll sheet and one or more training wall come together to realize above-mentioned this air-distribution.

By will cover 11 link with the bottom 22 of carriage assembly 21 selectively and when lid 11 covers, will cover 11 and bottom 12 sealed.Carriage assembly 21 links with base by the screw (not shown), said these screws pass on the bottom several separately hole 51 and enter in the screw thread deep hole 52 that is distributed in distance on the outer wall that has formed each scroll sheet 41,42.Be formed with several breach 53 on the periphery of the bottom 22 of carriage assembly 21, these breach 53 are divided into the periphery of bottom 22 the sealed flange 54 of several arcs separately.Lid has several closures 55 that extend in inside on 11, and this closure 55 enters in the middle of the breach 53 when lid 11 is in place, thereby makes minimum lug 17 be seated on bottom sidewall 36 and the annular seating 39.After this, cover 11 and rotate with respect to base by making, closure 55 will move and no longer aim at breach 53, and closure 55 will be meshed with the bottom surface of sealed flange 54, as shown in Figure 2.On this position, lid 11 can not directly be taken away from base without rotating, and only makes cover 11 and rotate and closure 55 and breach 53 are aimed at again and could be taken off from base covering 11.

Lid 11 and lock uint between the base 12 also comprise one in order to prevent the safe internal lock that motor and centrifugal fan turn round at lid 11 under as yet fully with respect to base 12 sealed situations in place.For reaching the purpose of this safe internal lock, have one, two or more curved flanges that hang from above 56 preferably on the lid 11 at least, as shown in Figure 3A, this flange 56 extends downwards from the bottom position of bottom.Designed flange 56 hang from above and base side wall 37 position adjacent places and between sidewall 37 and sidewall 36 in the formed U type groove.Dynamic Control safety device 70 is installed in the molded groove 57 and by means of lid 71 and is maintained in this groove 57, a section of the annular seating 39 of said groove 57 on the base 12 and forming, said lid 71 carries out thread connection by screw element " S " with base, screw element " S " extend in the screw thread installed part 58, and this screw thread installed part 58 is Unitarily molded in base 12.

Safety device 70 is connected selectively with a power supply by common power line (not shown) and is connected with " on-off " device 13 by the electric wire (not shown).

This device 70 comprises an inside " on-off " contactor, and this contactor automatically turns to off-state, unpowered in this state being sent on " on-off " device 13.Said inside " on-off " contactor comprises an outside elastic carrier roll-type actuation member 72, when this roll-type actuation member 72 is inwardly promoted by the housing towards device 70, " on-off " contactor is pushed into " connection " state, provides power to " on-off " device 13 therefrom.

When being put into lid 11 on the base 12 and when going to it on position that locks together with base 12, the flange 56 that hangs from above will be directed in the long mouth that forms between the lateral wall 36 of the sidewall 73 of lid 71 and base 12.Roll-type actuation member 72 is arranged in said long mouthful.Flange 56 will join to merging and one directed reach lean against on the housing of device 70, therefore make " on-off " contactor be in on-state, provide power thereby install 13 to " on-off " with roll-type actuation member 72.When lid 11 when rotate the position that it and base 12 lock together, flange 56 will be separated with roll-type actuation member 72, therefore just make that " on-off " contactor has disconnected, thereby automatically stopped providing power, so also just made motor and centrifugal fan shut down at once to " on-off " device 13.Especially referring to Fig. 5, the figure shows a kind of simplified schematic diagram of portable air purifier 59 of remodeling, in this air purifier, training wall is made up of a pair of annular wall 60,61, this to annular wall 60,61 in the vertical directions each other at a distance of certain intervals, thereby form the air outlet slit 62 of an annular.In this embodiment, lid 11 ' not resembles and extends to the air outlet slit place the previous embodiment, and lid 11 ' only is to surround HEPA filtration members 30 with the similar mode of above-mentioned U.S. Pat 4,629,482 disclosed modes.Fig. 5 has expressed and has respectively formed position relation mutual between the member, and wherein, at base 12, the centrifugal fan of interior running is installed on the central part of a single scroll sheet 64, and this scroll sheet 64 has a floss hole 65.By this floss hole 65, the air that has been filtered is discharged towards ring exit 62.Shown in Figure 6 as assembly drawing, the installation and the scroll sheet 64 that have second plate 66 of annular wall 60 on it are stacked relation.As the situation of previous embodiment, the air of discharging from floss hole 65 is directed to the tapered channel 67 that opens wide, and this tapered channel 67 is to form between the outer surface of sidewall separately on the base 61,60 and scroll sheet 64.In this way, some air that come out from floss hole 65 are discharged from the annular discharge opening adjacent with this floss hole, and simultaneously other air transmit by means of the inner surface of sidewall 61,60 and by the outer wall of scroll sheet 64 to external pressure, shown in the arrow in Fig. 7.Therefore, in this embodiment,, adopted the training wall of a single scroll sheet and pair of spaced in order to make the air from centrifugal fan, discharge radially outward distribute equably with respect to this air purifier.

Employing has the training wall separately (said ring exit is between training wall separately) of a ring exit, and this design philosophy is comprised among the instruction of the present invention.The present invention can adopt two or more scroll sheets to guide the air of discharging from air purifier.

Claims (10)

1. a portable air purifier comprises: the housing with air intake and air outlet slit; One is placed in the described housing and the filtration members between described air intake and air outlet slit; A fan that is placed in the described housing; One be used to drive fan so that air is inhaled into by air intake and having passed through described filtration members after from the motor of said air outlet slit discharge; It is characterized in that, described clarifier also includes: at least one is installed in the described housing and the scroll sheet of the arc between said fan and air outlet slit, this scroll sheet has inner surface and outer surface and has defined a floss hole, discharges towards said air outlet slit by this floss hole air.

2. according to the portable air purifier of claim 1, it is characterized in that, comprise a plurality of scroll sheets, each piece scroll sheet has first end and second end, and first end of every scroll sheet and second end of adjacent scroll sheet have defined a plurality of floss holes.

3. according to the portable air purifier of claim 1, it is characterized in that said fan is a centrifugal fan, said filtration members is a columnar HEPA filtration members.

4. according to the portable air purifier of claim 2, it is characterized in that said fan is a centrifugal fan, said filtration members is a columnar HEPA filtration members.

5. according to the portable air purifier of claim 1, it is characterized in that said air intake extends round said filtration members.

6. according to the portable air purifier of claim 3, it is characterized in that said air intake extends round said filtration members.

7. according to the portable air purifier of claim 4, it is characterized in that said air intake extends round said filtration members.

8. according to the portable air purifier of claim 1, it is characterized in that said housing comprises a base and a lid, base is used to guarantee to cover the interior coupling assembly that is installed on the base with covering to have; Also comprise and when base and lid are not sealed each other, make described motor safety device that shut down, that electrically connect.

9. according to the portable air purifier of claim 1, it is characterized in that said scroll sheet is radially outwards installed separately with respect to said fan.

10. according to the portable air purifier of claim 9, it is characterized in that said scroll sheet and said base define said floss hole.

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