CN205172379U - Ventilation clarifier - Google Patents
Ventilation clarifier Download PDFInfo
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- CN205172379U CN205172379U CN201520707519.3U CN201520707519U CN205172379U CN 205172379 U CN205172379 U CN 205172379U CN 201520707519 U CN201520707519 U CN 201520707519U CN 205172379 U CN205172379 U CN 205172379U
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Abstract
The utility model discloses a ventilation clarifier, including the electric fan, its characterized in that the air inlet end of electric fan pre -flock net (9) and main filter screen (16) is equipped with respectively with the air -out end, the outer edge of netting (9) at this pre -flock is equipped with wind gap interfacing part (4), be equipped with support (23), height and levelness regulator (11) below this electric fan. The electric fan include shell (15), impeller (6) and motor (13), motor (13) are supported in the axle center of cylinder shell (15) through branch or the radial guide vanes of several (5), install on the output shaft of motor (13) impeller (6), impeller (6) are located the air inlet end of electric fan, guide vanes branch (5) are located the air -out end. The utility model discloses efficient ventilation, filtration efficiency have to simple to operate can directly be used for simple ventilation or simple indoor filtration, economical and practical.
Description
Technical field
The utility model relates to for air purification field, is specifically related to a kind of ventilation purifier.
Background technology
People needs aerobic respiration, so all residential building all need to ventilate.In addition, excess air is polluted and is caused many health problems, filters also become extremely urgent demand to air.Many existing filtration systems have employed different filtering policys, but they are general or expensive, or invalid or poor efficiency.In addition, existing ventilation and filter filtered air before air enters indoor, but they have many problems.Utilize impact long pipeline attractive in appearance to connect from a middle position with room between every, install expensive, covering ugly pipeline also increases construction cost, and low-income group cannot afford, also completely unrealistic to the colony that rents a house.The turning of pipeline, elbow and length, considerably increase air resistance, bring additional air power loss, reduces the total energy effect of system.Further, this system needs many screw holes embedding wall and ceiling with anchoring pipeline, at least will open a macropore, to pass through the pipeline inside and outside junction chamber.Building is damaged in these big and small holes, and As time goes on stress is concentrated and may to be caused the growth of wall body slit with load fluctuation and numerously to prolong.In addition, As time goes on, in pipeline, the dust of accumulation is difficult to remove, and increases flowing resistance.
The customization that many air filters and ventilation filter system must use our company to produce, strange size or peculiarly shaped screen pack, make these companies can excessively to raise the price removable screen pack, add the use cost of customer.If because the reasons such as manufacturer's bankruptcy can not buy these screen packs, whole system will have been caused not use and to go out of use.
Existing ventilation filter system cannot be ventilated as simple or filter merely easily.So, if user has during these two kinds of needs must buy two kinds of machines.
Summary of the invention
The utility model overcomes the deficiency that prior art exists, and provides one to have efficient ventilation, filter efficiency, and easy for installation, economical and practical ventilation purifier.This ventilation purifier can also ventilate as simple or filter merely easily.
To achieve these goals, the utility model adopts following technical scheme: a kind of ventilation purifier, comprise electric fan, it is characterized in that, described electric fan comprises shell, impeller and motor, pre-filter screen and main filter screen are housed, and this pre-filter screen and main filter screen are located at the upstream and downstream of the air-flow flowing through electric fan respectively; Be provided with air port interfacing part in the outer of the air intake of electric fan, below this electric fan, be provided with bearing.
Described electric fan is axial fan, and motor is by the guide vane of several radial direction or strut support in the axle center of cylindrical housing, and impeller is arranged on the output shaft of motor, and guide vane/pole is positioned at upstream or the downstream of impeller.
Between described air port interfacing part and the wind inlet end of shell, be provided with flaring air intake flow-guiding mouth, the axial cross section of this air intake flow-guiding mouth is streamlined.
Between the outlet air end and main filter screen of described shell, diffuser is housed, diffuser is conical, and the outlet air end of its osculum end and shell is connected, and big opening end is circular or square, and be connected with a filter screen framework, described main filter screen is arranged in this filter screen framework; This diffuser is used for air-flow to expand to reposefully from a less cross section a larger cross section, to increase the total volume of air flow rate by air duct.
Described motor is provided with motor cover, described motor cover is the smooth-shaped of half ellipsoid or other continuous curvatures, on the inner ring that the opening of front end is fixed on guide vane or pole or strut support, the oval top of rear end, towards the outlet air end of electric fan, this motor cover is provided with gravity vent.
Described electric fan is centrifugal fan, comprise shell, impeller and motor, shell is volute shape, motor is arranged on the center of one end of shell, impeller is arranged on the output shaft of motor, and the center of the shell other end is air intake, is outlet air end at the tangential mouth of shell, directly be connected with described air port interfacing part, or be indirectly connected with described air port interfacing part by blast pipe.
Height and levelness adjuster is provided with below described bearing.
Described height and levelness adjuster form the leg be symmetrical set by two, and leg is by the connection of screw thread and bearing.
Described height and levelness adjuster are made up of height adjustment mechanism and levelness governor motion, and this height adjustment mechanism comprises the inside and outside sleeve pipe setting with each other and also can stretch, and between this inside and outside sleeve pipe, arrangement for adjusting height is housed; This levelness governor motion is made up of four bolts, and four bolts are respectively by the bottom being threaded in height adjustment mechanism.
Also comprise a blinker, described blinker adopts airfast hard or soft material to make, this blinker is provided with air intake, when blinker is soft material, need and be provided with the air port ring corresponding with described air port interfacing part at the edge of this air intake, described air port ring adopts hard or soft material to make.
Ferrous material or magnetic material is adopted at described air port ring and/or air port interfacing part; Or magnet is added on air port interfacing part, air intake flow-guiding mouth or air port ring; Or adopt snap close to be connected at air port ring and air port interfacing part.
Described blinker area larger and easily deformable or not firm time, be provided with gusset plate thereon, strengthen the wind loading rating of blinker.
Handle is provided with in the upper end of described shell.
Described guide vane is uniformly distributed along the circumference, its root and top are connected on inner ring and outer shroud, motor described in loading in this inner ring, expanding part inside shell described in this outer shroud embeds, and make the inner peripheral surface of this outer shroud concordant with the inner peripheral surface of the non-expanding part inside shell, to reduce the resistance to air-flow.
Also comprise the safe grid identical with described main filter screen appearance and size, for being replaced main filter screen in forced ventilation use procedure, being strayed into protect fan blade from the damage of extraneous material and the finger of people and being injured by blade; It slips into filter screen framework to load and unload the identical mode of main filter screen, and is fixed by top cover.
Compared with prior art, the utility model has the following advantages:
1. be easy to installation-general mounting method of the present utility model without any need for special tool(s) or equipment.One of them example is the gauze that can remove easily on existing screen window, replaces to the flexible blinker that a piece of providing with the utility model is transparent, and fixes this blinker with existing rubber strip and groove.The utility model is placed on corresponding windowsill or support, and regulates with height and level governor, and air port interfacing part of the present utility model is alignd with air port ring.This mounting means, without the need to punching or pipe laying.When user moves, the utility model is easy to be pulled away, and only original gauze need be reinstalled screen window, can not cause any damage to original window.
2. easy to clean-the utility model is easy to clean, only needing the utility model to be taken off from window once carrying gently, unclamping a screw and can take out reusable prefilter, and being rinsed well with clear water; Main filter screen is released from filter screen framework, then with wet each inner surface of cloth wiping.Do not need any climbing ladder or use purpose-built washing equipment.
3. the ventilation-extract main filter screen out of high flow rate, inserts safety grids, then runs the utility model.
4. natural ventilation-the utility model is taken away from window.Blinker there is a hole, hole is equipped with the filter screen of approximate screen window, air natural can be allowed to pass in and out indoor.
5. desktop air filter-take off the utility model from window, puts and runs on the table.
6. efficient desktop electric fan-take off the utility model from window, puts on the table, replaces filter screen, run with safe grid.
7. the meticulous aerodynamic design of energy-conservation-fan, guide vane, diffuser, air inlet port and motor cover makes system reach high flow capacity, the effect of low energy consumption.Eliminate the aerodynamic losses relevant to long pipeline or channel bend.
8. easy screen replacing-screen pack is easy to change, and boosts the top cover of filter screen framework, extracts old screen pack out, slip into new screen pack.Without the need to loosening any screw or climbing any ladder.
9. low cost filter screen replacement-screen pack of the present utility model has standard size and shape, easily commercially bought with low price by multiple supplier.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the embodiment of a kind of easy structure of the utility model;
Fig. 2 is the perspective view that a upper embodiment fits together;
Fig. 3 is the stereo decomposing structural representation of the utility model impeller, motor, motor cover and guide vane;
Fig. 4 is the perspective view in Fig. 3 after each assembling parts;
Fig. 5 is the structural representation in the front (towards air intake) of impeller embodiment of the present utility model;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the pattern curve figure on blade four limit (leading edge, trailing edge, blade root and top) of the utility model impeller;
Fig. 8 is the pattern curve figure of the curved surface of the blade of the utility model impeller;
Fig. 9 is the stereo decomposing structural representation being applicable to the impeller of longer diffuser of one of the utility model embodiment;
Figure 10 is the enlarged drawing of equalizing baffle in Fig. 9;
Figure 11 is the stereo decomposing structural representation of a kind of energy-saving efficient embodiment of the utility model;
Figure 12 is package assembly stereogram embodiment illustrated in fig. 11;
Figure 13 is front (outlet air end) structural representation embodiment illustrated in fig. 12;
Figure 14 is the A-A sectional view (turning clockwise 90 °) of Figure 13;
Figure 15 is the structural representation of the another kind of height of the utility model and levelness governor motion (side);
Figure 16 is the perspective view that the utility model is equipped with the blinker made with soft material;
Figure 17 is the perspective view of the utility model window-glass as blinker (being namely arranged on glass window);
Figure 18 is the structural representation of blinker soft in Figure 16;
Figure 19 is the Radial pressure distribution curve map of different fans;
Figure 20 is the perspective view of the safe grid of the utility model;
Figure 21 is the profile perspective view of the utility model centrifugal type electric fan;
Figure 22 is Facad structure (upstream extremity) schematic diagram of Figure 21;
Figure 23 is the left view of a kind of embodiment (air intake is provided with air port interfacing part) of Figure 22;
Figure 24 is the left view of another embodiment (air intake is provided with blast pipe) of Figure 22.
Description of reference numerals:
1-handle; 2-top cover; 3-filter screen framework; 4-air port interfacing part; 5-guide vane/pole; 6-impeller; 7-flow-guiding mouth; 8-rotational speed regulation button; The pre-filter screen of 9-; 10-lid; 11-height and levelness adjuster; 12-electric appliance control box; 13-motor; 14-motor cover; In 141-(motor cover) gravity vent; 15-circular short tube road; The main filter screen of 16-; 17-inner ring; 18-outer shroud; 19-motor wire conduit; 20-blinker; 21-fillet/window frame; 22-damping sheet; 23-bearing; 24-diffuser; 25-equalizing baffle; 26-slide rail; 27-balance weight; 28-blade inlet edge; 29-trailing edge; 30-root of blade; 31-blade tip; 32-spoon of blade; 33-takes turns nave collar; 34-fairing cap; On 341-(fairing cap) gravity vent; 35-air intake; 36-air port ring; The safe grid of 37-; 38-blast pipe; 39-timer adjusting knob, 40-windowsill/support.
Detailed description of the invention
, simple type embodiment
The embodiment of the simple type of a kind of ventilation purifier of the utility model, see Fig. 1, Fig. 2, Figure 16 and Figure 17, comprise axial-flow type electric fan, this electric fan comprises shell 15, pole 5, impeller 6 and motor 13, motor 13 in the axle center of cylindrical housing 15, has a pole to be hollow, as motor wire conduit 19 by pole 5 coaxial support of several radial direction in pole 5, extend from electric appliance control box 12 to motor 13 safely for supply lines, and not rough air.The lid 10 of electric appliance control box 12 is provided with rotational speed regulation button 8, and timer adjusting knob 39.Electric appliance control box 12 is located on motor 13 or bearing 23.
Impeller 6 is arranged on the output shaft of motor 13, at the upstream and downstream of described impeller 6, pre-filter screen 9 and main filter screen 16 is housed respectively, and pre-filter screen 9 preferentially selects stainless steel filament net, and main filter screen 16 preferentially selects the efficient filter screen of HEPA.Air port interfacing part 4 is provided with in the outer of pre-filter screen 9; Bearing 23 is provided with below this electric fan.Height and levelness adjuster 11 is provided with below described bearing 23.The height of this embodiment and levelness adjuster 11 form the leg be symmetrical set (bolt) by two, leg is connected with 23 of bearing by screw thread, the trace realizing height and levelness by rotating leg regulates, to be aimed at the air port ring 36 on window by air port interfacing part 4 when mounted.Under specific circumstances, the inside and outside sleeve pipe that also can also stretch by setting with each other has been assisted and has highly been regulated.The air port interfacing part 4 of this embodiment is preferably sheet toroidal, but is not limited to circle.
Operationally, air is from outside first by pre-filter screen 9, and the larger particles in filtered air, prevents insect, fibre object and bulky grain dust from blocking the main filter screen 16 of air downstream too early for the utility model.Meanwhile, pre-filter screen 9 also has the effect of protection and reduces the effect of turbulent flow, and experiment shows, the aerodynamic losses relevant to pre-filter screen 9 is reduced the turbulent efficiency improving impeller by pre-filter screen 9 and offset.
As shown in Figure 1, Figure 2, in Figure 11-14, the embodiment shown in Figure 16 and 17, filter screen framework 3 and main filter screen 16 are square.In addition, filter screen framework 3 and top cover 2 also prevent air-flow from surrounding's leakage of main filter screen 16, prevent unfiltered air leakage to indoor, reduce integrated air quality.The top cover 2 of simple type embodiment can with handle (1) for pivot upset.
Main filter screen 16 is arranged in described filter screen framework 3 frame with ground structure for convenience detach, as filter screen framework 3 for U-shaped is also provided with slot within it, main filter screen 16 inserts in the slot of filter screen framework 3, on the top of filter screen framework 3, top cover 2 is housed, top cover 2 is provided with groove as handle 1 in the face of the side of air intake.Main filter screen 16 is for convenience detach, is easy to change or cleaning.When outdoor air cleaning does not need to filter, filter screen 16 can be removed, replace safe grid 37, to increase drafting efficiency.Safe grid 37 can prevent blade to be strayed into from the damage of extraneous material and the finger of people and to be injured by blade.The utility model also can arrange multiple layers of filters, such as, increases the pre-filter layer of non-grid formula, play pre-filtered effect in the upstream of main filter screen 16; Increase an active carbon filter net in the downstream of main filter screen 16, described active carbon filter net, in the downstream of highly effective air filter screen, has the effect of the harmful chemical gas of absorption and peculiar smell.In addition, the utility model can also increase auxiliary thermal, carries out electrical heating to the cold air of entering the room.The most important thing is extreme flexibility of the present utility model, namely the utility model can be taken off from window, put and use as simple indoor air cleaner on the table.From energy conservation and filter efficiency angle, suggestion is preferential uses the window filter function with strict sealing, only allows a clean air to enter indoor, instead of etc. filter again after dirty oxygen diffusion to indoor.
, heavy duty detergent embodiment additional information
See Figure 11-Figure 14, this embodiment of the utility model adds air intake flow-guiding mouth 7, diffuser 24, motor cover 14, balance weight 26, Novel axial fan impeller 6, novel guide vane 5 on the basis of a upper embodiment.Because of the inventive point of Novel axial fan impeller 6 and novel guide vane 5 and experimental verification length longer, finally describe so be placed in application.First, air intake flow-guiding mouth 7, diffuser 24, motor cover 14, balance weight 26 concrete structure and effect are described below:
Between described pre-filter screen 9 and shell 15, flaring air intake flow-guiding mouth 7 is housed, the axial cross section of this air intake flow-guiding mouth 7 is streamlined, and its big opening end is provided with the annulus with axes normal, and is connected between described air port interfacing part 4 and the air intake of shell 15.The stream that the streamlined design of described air intake flow-guiding mouth 7 can prevent air from entering before shell 15 contracts (venacontracta), and stream contracting can reduce the aerodynamic efficiency of the vane tip of impeller 6.Therefore, the air intake flow-guiding mouth 7 with streamline shape makes air-flow enter the air intake of shell 15 smoothly, makes air-flow accelerate simultaneously, and avoids air-flow to be separated from the inner wall surface of shell 15 inlet end, and efficiency of the present utility model is improve several percentage points.The air port interfacing part 4 of this embodiment is identical with a upper embodiment.
Between the outlet air end and main filter screen 16 of described shell 15, diffuser 24 is housed, diffuser 24 is conical, the outlet air end of its osculum end and shell 15 is connected, big opening end is squarely (may also be other regular shapes, as circle), be connected with square filter screen framework 3, described main filter screen 16 is arranged in this filter screen framework 3 with ground structure for convenience detach equally.If the too short meeting of diffuser 24 causes the segregation phenomenon of air-flow, thus causes efficiency to decline.If diffuser 24 is long, system by being difficult to being placed on windowsill/leg of shelf on balance-seeking.Generally speaking, the diffusion area of diffuser 24 is than larger (diffusion area is than the area ratio being the air-flow cross-section of diffuser 24 entrance and the air-flow cross-section of outlet), and required length is larger.Increasing the diameter of fan 6 and reduce fan hub support 33, diffusion area ratio can be reduced when not reducing screen area.This diffuser 24 for air-flow to be expanded to reposefully a larger cross section from a less cross section, to increase the total volume of air flow rate by air duct.Diffuser 24 one end in the present embodiment is the circular other end is Two Coaxial Square, and by conical tube transitional structure, the bore of arrival end circle is less than the square length of side of the port of export.Diffuser 24 is made of plastics, and the inner side of its port of export circumferentially can be provided with several radial rib plate and support, to gain in strength.In embodiment shown in Figure 11-Figure 14, the Advantageous materials of filter screen framework 3 and top cover 2 selects plastics, and top cover 2 can snap in and extract.
Described motor 13 is provided with motor cover 14, and described motor cover 14 is (approximately) half ellipsoid, and the opening of front end is used for being inserted in motor 13, and the oval top of rear end, towards the outlet air end of electric fan, this motor cover 14 is provided with gravity vent 141.Motor cover 14 has the continuous surface of a continuous slope, avoid air-flow by time produce eddy current, help air flow through smoothly around motor 13, reduce the resistance to air-flow.Gravity vent 141 in motor cover 14 allows a small amount of air to pass through, for motor 13 cools.This cooling-air flow rate is very little, significantly can not reduce the efficiency of whole system.Motor cover 14 can be made of plastic.
See Fig. 9 and Figure 10, the wheel hub of the impeller 6 of electric fan of the present utility model is the equalizing baffle 25 of a circle, the slide rail 27 of the multiple radial directions be uniformly distributed along the circumference is provided with in the inner side of this equalizing baffle 25, slide rail 27 is slidably installed balance weight 26, reached by the position of adjustment block 26 and regulate impeller 6 dynamically balanced object, after adjustment with cementing agent by fixing for balance weight 26 (in advance between coated with adhesive); Installing hole on the output shaft that the center of this equalizing baffle 25 is provided with for being arranged on motor 13, the periphery of equalizing baffle 25 is connected with the wheel nave collar 33 of impeller 6.The fairing cap 34 of arc is housed at outside (side towards the air intake) center of this equalizing baffle 25, this fairing cap 34 is provided with gravity vent 341.
, centrifugal fan type embodiment
See Figure 21-Figure 24, electric fan of the present utility model also centrifugal fan, comprise shell 15, impeller 6 and motor 13, shell 15 is volute shape, motor 13 is arranged on the center of one end of shell 15, impeller 6 is arranged on the output shaft of motor 13, and the center of shell 15 other end is air intake, is outlet air end at the tangential mouth of shell 15.Also diffuser 24 is provided with, the outer termination filter screen framework 3 of diffuser 24 at described outlet air end; Air port interfacing part 4(is provided with as Figure 23 at described air intake) or in one end of air intake connection blast pipe 38, the other end of blast pipe 38 connects air port interfacing part 4(as Figure 24).
, install
See Figure 16-Figure 18, the utility model is a configurable blinker 20 also, and this blinker 20 is provided with air intake 35, is provided with the air port ring 36 corresponding with described air port interfacing part 4 at the edge of this air intake 35.The effect of blinker 20 installs to cover on window, only allows air intake 35 to ventilate.Described blinker 20 adopts airfast hard (clear hard plastics or glass) or soft material (film that plastic foil or other conventional organic or inorganic materials are made) to make.One of soft blinker 20 mounting method is: by blinker 20 edge fold or be cut to the size equal with gauze frame of gauze, then adhesive tape is adopted with fillet 21() be connected and fixed with gauze frame of gauze: be provided with fillet 21 at the periphery of this blinker 20, fillet 21 can be adhesive tape (side coating non-drying glue layer), may also be strap or the slightly thick plastic foil of thickness, there is the effect of gaining in strength.Another kind of mounting means removes the original gauze of screen window, with original rubber press strip by blinker 20 compacting in the mounting groove of gauze frame of gauze.The employing of soft blinker 20 of the present utility model, greatly facilitate and install and use, do not need perforate on window can realize indoor-outdoor air pass purification, avoid the damage to building, do not affect the attractive in appearance of original building, and save use cost.
Then, a kind of for the utility model ventilation purifier being placed on windowsill/support 40, by regulating height and levelness adjuster 11, air port interfacing part 4 being alignd with the air port ring 36 on window.Described air port ring 36 can adopt hard or soft material to make.An example particularly, described air port ring 36 adopts ferrous material to make, correspondingly be, described air port interfacing part 4 is provided with magnet (or air port interfacing part 4 adopts magnetic material to make), like this, in use, air port interfacing part 4 and air port ring 36 utilize the mutual adhesive of magnetic, realize the object of sealing.
When permanent installation, the special example of blinker 20 one of adopting glass to make as shown in figure 17, the glass of existing window is outputed circular air intake 35, air port ring 36 is inlaid in the edge of air intake 35, air port interfacing part 4 and the air port ring 36 of ventilation purifier are aligned and is adjacent to.To semipermanent or permanent installation, the connected modes such as snap close, screw thread, cementing agent can be adopted at air port ring 36 and air port interfacing part 4.When soft blinker 20 area is larger, be provided with damping sheet 22(in the middle see Figure 16 and Figure 18), to strengthen the wind loading rating of blinker 20.Damping sheet 22 adopts the sheet material of hard, as plastics or metal sheet, bonding with blinker 20 or adopt connector to be connected and fixed.
, Novel axial fan impeller 6 explanation
Blast fan 6 by incoming flow and impeller 6 leading edge almost tangent and do not produce the smooth and easy impeller 6 that flows through discretely and design.Impeller 6 is by raising the efficiency subsidiary details design to greatest extent.Air is risen by its static pressure during impeller 6, and the pressure differential of generation drives air through main filter screen 16.Due to the rotation of impeller 6, also introduce simultaneously one useless and waste the circumferential speed component of electric energy, these needs reduce by designing.See Fig. 5-Fig. 8, the utility model utilizes parabola to design leading edge 28 and the trailing edge 29 of the blade of described impeller 6, designs root 30 and the vane tip 31 of blade with circular arc line; Namely utilize parabola to carry out design plane aerofoil profile and project to cylindrical surface be created on circumferencial direction have constant thickness, radial direction have linear gradient thickness, there is the cylinder airfoil 32 of round and smooth aerofoil profile leading edge and trailing edge.Preferred impeller 6 comprises the buzzard-type wing blade that five have parabolic type blade inlet edge 28 and trailing edge 29.Fig. 8 shows the isometric view of an impeller 6 vane airfoil profile shape.X-axis represents roughly circumferencial direction, and Y-axis representative is roughly radial, and z-axis represents axis direction.What Fig. 7 showed is the plane projection of blade, and the vane airfoil profile being namely baseline parabola is projected on the face of cylinder and obtains.Blade root aerofoil profile 30 and blade tip aerofoil profile 31 are circular arc; The thickness of aerofoil profile linearly successively decreases from root of blade 30 to blade tip 31.The shape of blade inlet edge 28 and trailing edge 29 is parabola shaped.Blade inlet edge is:
.Trailing edge is:
.The blade shape of impeller 6 of the present utility model is different from conventional blade design, for the aerofoil fan of about 25 centimetres of diameter, its hub diameter about 10 centimetres, when its rotary speed is about 1200RPM, the blade root of conventional blade is about 15.1-38.7 degree to the blade pitch angle of blade tip, in other words, the total torsional angle from blade root to blade tip about 23.6 degree.And the blade root of blade of the present utility model is 69.3-74.7 degree to the blade pitch angle of blade tip, in other words, the total torsional angle from blade root to blade tip only has 5.4 degree.This design difference improves the fan performance (measurement parameter of a national standard, unit is cubic meters per minute every watt) of 28%.
The embodiment with longer diffuser can allow higher hub-tip ratio (ratio of impeller internal-and external diameter) and can not cause flow separation, thus produces higher static pressure and air-flow velocity.Such embodiment can utilize the more complicated airfoil with non-uniform thickness distribution, runs under the air-flow velocity of more wide region.Axial fan impeller 6 for this embodiment becomes heavier, and its Mass Distribution is further from rotation.Consequently, such fan comparatively has much difficulty in healing weighing apparatus, so the new method of the utility model one is depicted in Fig. 9 and Figure 10: the wheel hub of impeller 6 is the equalizing baffle 25 of a circle, the slide rail 26 of the multiple radial directions be uniformly distributed along the circumference is provided with in the inner side of this equalizing baffle 25, slide rail 26 is slidably installed balance weight 27, is reached regulate the dynamically balanced object of impeller 6 by the position of adjustment block 27.Concrete grammar adhesive is applied to balance weight 27 and is buckled into the groove of slide rail 26 and slide along slide rail 26, until impeller 6 reaches balance, does for be bonded dose and namely fix.The gravity vent 341 that installing hole on the output shaft that the center of this equalizing baffle 25 is provided with for being arranged on motor and the permission cooling-air be uniformly distributed along the circumference pass through; The fairing cap 34 of arc is housed, to strengthen the aerodynamic efficiency of impeller 6 root in the upstream of this equalizing baffle 25.
, guide vane 5 explanation
The pole 5 of the support motor of heavy duty detergent embodiment has as shown in figure 11 been replaced by guide vane 5.Air is by after pre-filter screen 9, from by the guide vane 5 in columnar shell 15 after being driven by impeller 6, while the pressure differential driving air-flow that impeller 6 produces, also create a circumferential speed component, this component is a useless energy (kinetic energy), and the effect of guide vane 5 is exactly this useless circumferential speed component is converted into useful static pressure, namely the effect of guide vane 5 is exactly useless circumferential speed component be converted into useful to flow to component, passes through to promote more axial flow.Guide vane 5 utilizes NACA4 position series aerofoil sections, and maximum camber is positioned at apart from blade inlet edge 3/10ths chord length.Except at rounded leading edge and trailing edge, chord length is linearly tapered from blade tip to blade root, but vane thickness remains unchanged.Two unique equations are derived: first equation is m=0.105 δ, wherein in design guide vane 5
, and second equation
, be used for estimation by the air-flow peripheral speed after impeller.V is axial air flow velocity, and Vc is by the air-flow peripheral speed after impeller,
for the differential static pressure by rising after impeller,
for the density of air, and U is the circumferential speed of rotary blade, is the function of a radial position and wheel speed.Because guide vane 5 is static, lower by the relative velocity of the air-flow of guide vane 5, so the impact of its detailed shape on system effectiveness is less.Guide vane 5 quantity selects needs to guarantee: its geometry is successfully imposed on air-flow by (1); (2) weight of all installing components can suitably be supported; (3) material used can not be too much.
Have a blade to be the thick symmetrical airfoil of hollow in guide vane 5, and trailing edge is inc, extends safely for supply lines from electric appliance control box 12 to motor 13, and not rough air.
, experiment results
For the efficiency of a kind of ventilation purifier of checking the utility model, have selected a simple type embodiment, a heavy duty detergent embodiment and an existing business desktop strainer in an experiment and compared.Balancing method is the volume flow rate of a measurement industrial standard and the ratio of actual power.This is not a fair comparative approach strictly: whether the technology of a kind of ventilation purifier of the utility model allows dirty air enter indoor, and desktop strainer allows dirty oxygen diffusion then to clean to indoor.The latter actually increases needs filtered air volume, also extends filtration time.
Table 1 compares two kinds of air ventilation and purification systems and to be in operation average power consumption (W).Because in different time sections, the voltage of national grid can fluctuate at 220V.For eliminating the stability influence of voltage, the power consumption in experiment all adjusts to unified 220V.
Table 1: average power consumption (W) (level that can reach at present) in operation
| Power setting | 1(is low-grade) | 2(is middle-grade) | 3(is high-grade) |
| Simple type of the present utility model | 22.9 | 26.5 | 35.0 |
| Heavy duty detergent of the present utility model | 22.1 | 26.4 | 35.2 |
Table 2 illustrates performance and the efficiency of the different strainers under same motor, nominal power, driving voltage.Wherein NiuKee strainer is a kind of typical desktop air filter on the market.
Table 2: the volume of air flow rate (m flowing through HEPA filter screen under identical nominal power
3/ min) comparison
| Power setting | 1(is low-grade) | 2(is middle-grade) | 3(is high-grade) |
| Niu Kee strainer (only using HEPA filter screen) | - | - | 1.00 |
| HEPA filter screen is tied up on commercially best fan | - | - | 1.23 |
| The utility model first embodiment (Fig. 1) | 1.44 | 1.82 | 2.18 |
| The utility model second embodiment (Figure 11) | 2.11 | 2.62 | 3.06 |
See Figure 19, this is that power middle-grade (the 2nd grade) arranges the lower gas pressure distribution figure along wafter radial direction, x-axis is the distance of distance Fan axial center, and unit is a millimeter mm, and y-axis is the draught head by HEPA filter screen (unit is Pascal Pa) of the location point in corresponding x-axis direction.In figure, curve is: heavy line represents the gas pressure distribution figure of heavy duty detergent embodiment of the present utility model under power middle-grade (the 2nd grade) is arranged; Thick dashed line represents the gas pressure distribution figure of simple type type embodiment of the present utility model under power middle-grade (the 2nd grade) is arranged.Vertical fine dotted line is also had: r=48.5mm represents the external diameter of blast fan wheel hub, i.e. the blade root position of impeller blade in figure; R=127.5mm represents the blade tip position of impeller blade; R=130mm represents the internal diameter of shell 15; R=141mm represents the vertical distance of limit to axle center of filter screen 16; R=199.4mm represents the distance of angle to axle center of filter screen 16.
Draught head shown in wind speed to y-axis is directly proportional, so the draught head shown in y-axis is higher in the integrated value of the whole area of HEPA filter screen, represent the volume of air flow rate flowing through HEPA filter screen of the present utility model higher, namely performance is better.Meanwhile, the draught head shown in y-axis is more even along x-axis distribution, more the uniform particle in air can be distributed in whole HEPA filtering net surface, prolongation filter screen application life.
In simple type embodiment Figure 19, thick dashed line is analyzed: between r=0 and r=48.5mm, have the straight line that a section smooth, represent the differential static pressure of this region constant, illustrate that air-flow is subject to unexpected cross sectional shape change in the downstream of impeller hub, be separated completely with hub surface, reduced system effectiveness.Differential static pressure from impeller blade root to blade tip region parabolically rises, and then suddenlys change by the cross sectional shape between shell 15 and screen frame 3, and differential static pressure is sharply declined, and represents sharply to be declined by the air velocity of filter screen 16, and namely system effectiveness sharply declines.R=141mm and r=199.4mm all within screen frame 3, differential static pressure without significant change, represent air velocity stablize.
Heavy duty detergent embodiment has higher pressure reduction and flow velocity at each point by strainer.The heavy line representing heavy duty detergent embodiment of the present utility model in Figure 19 is one section of straight line linearly raised between r=0 and r=48.5mm, the stable differential static pressure increased of representative, or the stable air velocity increased, illustrate that air-flow is not separated with hub surface completely in the downstream of impeller hub.And compared with simple type embodiment of the present utility model, the differential static pressure sharply declined in region disappears between shell 15 and screen frame 3, be because the effect of diffuser 24, maintain stable and high differential static pressure, thus greatly increase the efficiency of system.
, statement
Above-described embodiment, just in order to technical conceive of the present utility model and feature are described, its objective is and is one of ordinary skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.The change of every equivalence done by the essence of the utility model content or modification, all should be encompassed in protection domain of the present utility model.
Claims (15)
1. a ventilation purifier, comprise electric fan, it is characterized in that, described electric fan comprises shell (15), impeller (6) and motor (13), pre-filter screen (9) and main filter screen (16) are housed, and this pre-filter screen (9) and main filter screen (16) are located at the upstream and downstream of the air-flow flowing through electric fan respectively; Be provided with air port interfacing part (4) in the outer of the air intake of electric fan, below this electric fan, be provided with bearing (23).
2. ventilation purifier according to claim 1, it is characterized in that, described electric fan is axial fan, motor (13) is supported on the axle center of cylindrical housing (15) by the guide vane/pole (5) of several radial direction, impeller (6) is arranged on the output shaft of motor (13), and guide vane/pole (5) is positioned at upstream or the downstream of impeller (6).
3. ventilation purifier according to claim 2, is characterized in that, between described air port interfacing part (4) and the wind inlet end of shell (15), be provided with flaring air intake flow-guiding mouth (7), and the axial cross section of this air intake flow-guiding mouth (7) is streamlined.
4. ventilation purifier according to claim 1, it is characterized in that, between the outlet air end and main filter screen (16) of described shell (15), diffuser (24) is housed, diffuser (24) is conical, the outlet air end of its osculum end and shell (15) is connected, big opening end is circular or square, and be connected with a filter screen framework (3), described main filter screen (16) is arranged in this filter screen framework (3); This diffuser (24) for air-flow to be expanded to reposefully a larger cross section from a less cross section, to increase the total volume of air flow rate by air duct.
5. ventilation purifier according to claim 2, it is characterized in that: on described motor (13), be provided with motor cover (14), described motor cover (14) is the smooth-shaped of half ellipsoid or other continuous curvatures, on the inner ring (17) that the opening of front end is fixed on guide vane or pole (5) or strut support, the oval top of rear end, towards the outlet air end of electric fan, this motor cover (14) is provided with gravity vent (141).
6. ventilation purifier according to claim 1, it is characterized in that, described electric fan is centrifugal fan, comprise shell (15), impeller (6) and motor (13), shell (15) is volute shape, motor (13) is arranged on the center of one end of shell (15), impeller (6) is arranged on the output shaft of motor (13), the center of shell (15) other end is air intake, be outlet air end at the tangential mouth of shell (15), directly be connected with described air port interfacing part (4), or be indirectly connected with described air port interfacing part (4) by blast pipe (38).
7. ventilation purifier according to claim 1, is characterized in that: below described bearing (23), be provided with height and levelness adjuster (11).
8. ventilation purifier according to claim 7, is characterized in that: described height and levelness adjuster (11) form the leg be symmetrical set by two, and leg is connected with (23) of bearing by screw thread.
9. ventilation purifier according to claim 7, it is characterized in that: described height and levelness adjuster (11) are made up of height adjustment mechanism (111) and levelness governor motion (112), this height adjustment mechanism (111) comprises the inside and outside sleeve pipe setting with each other and also can stretch, and between this inside and outside sleeve pipe, arrangement for adjusting height is housed; This levelness governor motion (112) is made up of four bolts, and four bolts are respectively by the bottom being threaded in height adjustment mechanism (111).
10. ventilation purifier according to claim 1, it is characterized in that: also comprise a blinker (20), described blinker (20) adopts airfast hard or soft material to make, this blinker (20) is provided with air intake (35), when blinker is soft material, need and be provided with the air port ring (36) corresponding with described air port interfacing part (4) at the edge of this air intake (35), described air port ring (36) adopts hard or soft material to make.
11. ventilation purifiers according to claim 10, is characterized in that: adopt ferrous material or magnetic material at described air port ring (36) and/or air port interfacing part (4); Or magnet is added on air port interfacing part (4), air intake flow-guiding mouth (7) or air port ring (36); Or adopt snap close to be connected at air port ring (36) with air port interfacing part (4).
12. ventilation purifiers according to claim 10, is characterized in that: described blinker (20) area larger and easily deformable or not firm time, be provided with gusset plate (22) thereon, strengthen blinker (20) wind loading rating.
13. ventilation purifiers according to claim 2, is characterized in that: be provided with handle (1) in the upper end of described shell (15).
14. ventilation purifiers according to claim 2, it is characterized in that: described guide vane/pole (5) is uniformly distributed along the circumference, its root and top are connected on inner ring (17) and outer shroud (18), motor (13) described in loading in this inner ring (17), the expanding part of shell (15) inner side described in this outer shroud (18) embeds, and make the inner peripheral surface of this outer shroud (18) concordant with the inner peripheral surface of the non-expanding part of shell (15) inner side, to reduce the resistance to air-flow.
15. ventilation purifiers according to claim 1, it is characterized in that: also comprise the safe grid (37) identical with described main filter screen (16) appearance and size, for being replaced main filter screen (16) in forced ventilation use procedure, being strayed into protect fan blade from the damage of extraneous material and the finger of people and being injured by blade; It slips into filter screen framework (3) to load and unload the identical mode of main filter screen (16), and is fixed by top cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520707519.3U CN205172379U (en) | 2015-09-14 | 2015-09-14 | Ventilation clarifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520707519.3U CN205172379U (en) | 2015-09-14 | 2015-09-14 | Ventilation clarifier |
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| Publication Number | Publication Date |
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| CN205172379U true CN205172379U (en) | 2016-04-20 |
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| CN201520707519.3U Active CN205172379U (en) | 2015-09-14 | 2015-09-14 | Ventilation clarifier |
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| CN (1) | CN205172379U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089465A (en) * | 2015-09-14 | 2015-11-25 | 吴瑞霞 | Ventilation purifier |
| CN106286343A (en) * | 2016-09-07 | 2017-01-04 | 青岛智享专利技术开发有限公司 | A kind of power transformer equipment factory dust removal and filtration draught fan |
| CN108268672A (en) * | 2016-12-30 | 2018-07-10 | 格朗吉斯铝业（上海）有限公司 | Aerofoil fan, design aerofoil fan three dimendional blade method and computer equipment |
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2015
- 2015-09-14 CN CN201520707519.3U patent/CN205172379U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089465A (en) * | 2015-09-14 | 2015-11-25 | 吴瑞霞 | Ventilation purifier |
| WO2017045584A1 (en) * | 2015-09-14 | 2017-03-23 | 吴瑞霞 | Ventilation purifier |
| WO2019174605A1 (en) * | 2015-09-14 | 2019-09-19 | Qingdao Randall Aerodynamic Engineering, Llc | Air purifier |
| US10711804B2 (en) | 2015-09-14 | 2020-07-14 | Qingdao Randall Aerodynamics Engineering LLC | Air purifier |
| CN106286343A (en) * | 2016-09-07 | 2017-01-04 | 青岛智享专利技术开发有限公司 | A kind of power transformer equipment factory dust removal and filtration draught fan |
| CN106286343B (en) * | 2016-09-07 | 2018-10-23 | 钱佳敏 | A kind of power transformer equipment factory dust removal and filtration draught fan |
| CN108268672A (en) * | 2016-12-30 | 2018-07-10 | 格朗吉斯铝业（上海）有限公司 | Aerofoil fan, design aerofoil fan three dimendional blade method and computer equipment |
| CN108268672B (en) * | 2016-12-30 | 2021-06-01 | 格朗吉斯铝业（上海）有限公司 | Axial fan, method for designing three-dimensional blade of axial fan and computer equipment |
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