瑞典专利SE1200616A1 Smoke filter with improved filtration efficiency

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专利摘要:
The invention refers to a smoke filter (1) comprising a spout (14) and two air filters (1a-b), the smoke filter comprising an intake opening (3) and an exhaust opening (18a-b). Air from the intake opening moves in the direction of the exhaust opening and on the way the air passes the two air filters (11a-b). The two air filters (1 la-b) are not arranged in the same plane, which gives a larger filter surface and thus a lower air flow rate. This provides a better altering effect and a lower noise level. In one embodiment, the two air filters (11a-b) are flat and angled apart. An ash container can be arranged between the two air filters (11a-b). In further embodiments, the smoke filter (1) comprises more than two air filters (1 la-b), arranged in a single-sack form or the smoke filter (1) may comprise more than two air filters (1 la-b) arranged as a single air filter there each The filter is angled from the direction of air movement and where the air filters are fitted with seals that force the air through either air filter in the set of filters. Typically the constituent air filters (11a-b) are of active carbon filters, but in addition to the air filters (11a-b) the smoke filter (1) may comprise at least one particle filter (12) arranged on the path between the intake opening (3) and the exhaust opening (18a-b). 6/9
公开号:SE1200616A1
申请号:SE1200616
申请日:2012-10-10
公开日:2014-04-11
发明作者:Bo Dolk-Petersson
申请人:Qleanair Scandinavia Ab；
IPC主号:

专利说明:

In further advantageous embodiments, the smoke filter 1 comprises more than two air filters lla-b, arranged in a zig-zag form or the smoke filter 1 may comprise more than two air filters lla-b arranged as a series of air filters where each filter is angled from the direction of air movement and where The air filter is equipped with seals that force the air through either air filter into the set of filters. Typically, the air filters 11a-b consist of activated carbon filters, but in addition to the air filters 11a-b, the smoke filter 1 may comprise at least one particle filter 12 arranged on the path between the intake opening 3 and the exhaust opening 18a-b.
Brief description of the figures Fig. 1 shows a first embodiment of the invention seen obliquely from above Fig. 2 shows the invention seen from its wide side Fig. 3 shows the invention seen from its one short side Fig. 4 shows the invention seen from above Fig. 5 shows the invention seen from its other short side Fig. 6 shows a cross section through the opening along the line AA Fig. 7 shows an exhaust filter Fig. 8 shows in partial cross section the invention seen obliquely from above Fig. 9 shows in partial cross section the invention seen obliquely from above with the lid removed Description of a preferred embodiment Fig. 1 shows a first embodiment of the invention seen obliquely from above. The invention consists of a mainly rectangular block-shaped element which functions as a smoke filter 1. The smoke filter is intended to receive and collect cigarette, cigarette and cigar ash, cigarette butts, used matches and the like in a receiving funnel 2 arranged on the top of the smoke filter. The receiving funnel 1 is conical with a large receiving opening directed upwards and decreases in diameter downwards so that at its bottom it has an opening which is adapted to be able to receive cigarette butts and other objects of the same size, but not larger objects.
On the upper part of the smoke filter there is a suction grill 3 arranged which consists of an element with a flat top and four sides which slope slightly from the horizontal plane. The intake grill 3 comprises a series of small openings distributed over its four sloping sides through which air can be sucked in. Inside the smoke filter there is a genuine device which creates a negative pressure on the inside of the intake grill so that smoke from cigarettes around the intake grill and the receiving funnel is sucked into the smoke filter and filtered out before it is blown out to the surroundings.
The smoke filter is provided with four flat sides and on the wide side facing the viewer of the figure a motion detector 4a is arranged. The motion detector detects if someone is in the vicinity of the smoke filter and can then activate the fan or increase its intake volume per unit time.
When a person approaches the smoke filter, it can be assumed that he is a smoker and that the amount of smoke in the vicinity of the smoke filter increases, so the need for ﬂ marriage increases.
Fig. 2 shows the smoke filter seen from its wide side and here the receiving funnel 2 is illustrated more clearly.
The receiving funnel is provided with a recessed groove 5 in its upper edge where smokers can let a burning cigarette rest. The intake grill has a flat area around the receiving funnel, but this is small so only very few cigarettes could be placed there. The outside of the reception funnel slopes steeply outwards so it is not possible to get a cigarette butt to rest there and from the sloping sides of the intake grill, any cigarette butts would roll off, all to lead smokers to throw down cigarettes just inside the reception funnel. The intake grill's many small intake openings, which are sized so that it is not possible to get a cigarette through with matches that can be pressed in, are fitted at the bottom with a metal protective grille that prevents matches and the like from falling on the charcoal. The lid is provided with a lock 6 which prevents access to the interior of the smoke filter. Under the smoke filter's mainly rectilinear body there is a foot 7 which forms an outlet part with a row of opening through which filtered air is blown out. The foot has four sides facing in the same directions as the respective sides of the smoke ochlter and through each of all four sides two outlet openings l8a-b extend. Each exhaust opening is rectangular and has almost the same length as the side of the exhaust section. Each exhaust opening occupies approximately one third of the height of the exhaust member, so that in total they cover approximately two thirds of the height of the exhaust member. Together, they make up more than half of the exhaust area.
Fig. 3 shows the smoke filter seen from one of its short sides and here the smoke filter's two motion detectors 4a-b are illustrated, arranged on the front and rear wide sides of the smoke filter, respectively. On the short side illustrated, an electrical connector 8 is arranged which can be connected to an electrical cord so that the fan of the device and other electronics are energized.
An electric hatch 9 can also be seen which is fastened with screws and behind which service personnel have access to internal electronic parts, such as fuses and the like. Below the short side of the smoke filter, the short side of the foot is illustrated with exhaust openings.
Fig. 4 shows the smoke filter seen from above and here the large opening area of the receiving funnel 2 is clarified with a small central hole through which only cigarette-sized objects can pass. Here it is also clearer that it is equipped with three recessed grooves in its upper edge where cigarettes can rest. Subject to a flat upper surface 20 of the intake grill where the receiving funnel is located 2, the major part 21 of the intake grill is provided with intake openings over its surface. This provides a large suction surface that enables a low air flow per suction opening, so that a hissing sound does not occur.
At the same time, the total intake area becomes large, so that a large amount of air can be sucked into the interior of the smoke filter, filtered and blown out.
Fig. 5 shows the smoke filter seen from its other short side and a cross section through its inner longitudinal line A-A in the figure is illustrated in Fig. 6. The inner construction of the smoke filter is illustrated here. A receiving funnel 2 is arranged on the top of the suction grill 3. Below the horizontal top part of the intake grill where the receiving funnel is located, an ash container 10 is arranged. The ash container consists of a container with a right opening in its upper part with a top opening and with angled sides at its lower end.
The ash container here is made of sheet steel, which has a high resistance to heat transfer, but can of course be made of any non-combustible material, while the rest of the smoke filter can comprise parts of materials that are combustible, such as wood. The ash container can in principle be used in this way for receiving cigarette butts, but normally service personnel insert an aluminum bag inside it which can be closed and removed when the bag is full.
The top opening of the ash container lies close to the horizontal top part of the suction grill so that a nearly airtight closed space is formed in its interior, where only small amounts of air can enter through the small center hole on the receiving funnel. In this way, an environment is achieved in the interior of the ash container and in the bag with a low oxygen content, so that cigarette butts naturally go out. Between the top opening of the ash container and the horizontal top part of the suction grill there may be a small gap, so that 4 people create negative pressure even in the interior of the ash container. This forces air through the center hole of the receiving hopper which is then sucked further out of the ash container. Vapors from the inside of the ash container accompany this air ﬂ to a filter before it is blown out, thus preventing such vapors from reaching the surroundings. At the same time, the air exchange in the interior of the ash container becomes low, so that the oxygen content is kept low and cigarette butts naturally go out.
Under the intake grill and the ash container, two carbon filters lla-b are arranged. They are arranged airtight against the inner walls of the smoke filter so that no air can pass past the carbon filters but is forced to blow through the carbon filters.
The carbon filters are arranged at an angle from the horizontal plane, so that the two filters together form a V-shape, with a 90 ° angle between the two filters. The right filter is inclined upwards to the right in the figure and the left filter is inclined upwards to the left in the figure. In this way, the two filters can be made to cover a larger area than would be possible if they had been horizontal, which for the angle chosen in this embodiment gives an area increase of 41%. With this increase in area, it follows that the air movement speed through the filters decreases by the corresponding 30%. With the lower speed of movement, better adhesion is achieved between the substances that get stuck in the filters and the carbon particles. The filters are located in airtight holders from which they can be easily lifted out when changing filters and where the filter holders ensure that the filters are kept in this V-shape.
Below the carbon filters 11a-b, a HEPA type 12 particle filter is arranged which extends horizontally. It is located on an airtight receiving frame that prevents air from passing through the HEPA filter and forces all air to pass through it.
On the right and left inside of the smoke filter, under the carbon filter and down to the HEPA filter, there are two sound-absorbing elements 13a-b that eliminate sounds that may occur from the kten genuine and from the filters. The large area of the carbon filters means that the air flow through them per area is low so that wind noise becomes weak and further parts of this sound are eliminated by the sound-absorbing elements which consist of a foam rubber-like material. Noise that occurs further into the device than the carbon filters is also attenuated by the carbon filters themselves so that only very small noise reaches out of the smoke filter's intake grill.
Under the HEPA filter there is a space where a fan 14 with motor and control electronics is arranged. The fan with the motor is suspended in sound-absorbing rubber feet and is surrounded by light-insulated materials so that noise emitted is minimized. The fan has an upper intake from which air from the HEPA filter draws in and a lower one through which outgoing air is blown downwards. The fan stands on a ﬂ marriage floor 19 through which the exhaust extends.
The exhaust air reaches from the lower mouth of the filter a sound-absorbing exhaust filter arranged in the base of the smoke filter. The exhaust filter 15 consists of a substantially pyramid-shaped element with the top arranged directly below the center of the exhaust hole of the fan. The exhaust filter consists of a foam rubber-like material that effectively attenuates sound. The air that is blown out past the exhaust filter is forced by this to form four channels which extend over the four upper sides of the exhaust element and open into the exhaust mouths of the foot 7, and are delimited upwards by the underside of the ﬂ floor 19. Because the exhaust air is forced to pass along a large surface of the exhaust filter, this has a high degree of sound-absorbing effect. At the same time, the speed of fate is kept down by the air being able to pass through a space with an overall large area, so that wind noise is kept down.
Fig. 7 shows an exhaust filter 15 seen from above. The four sloping sides of the pyramid are clearly illustrated and along these the exhaust air thus runs. The pyramid has a flat top centrally located below the center of the ﬂ genital's blowout hole, which is illustrated as a dashed ring.
Fig. 8 shows in partial cross section the smoke filter seen obliquely from above and here the carbon filters in its holder are clearly illustrated, which form an airtight triangular element with the tip downwards, except that air can of course pass through the filters themselves. Below these, the HEPA filter is illustrated on its stretcher frame and these also form an airtight wall, as if the air can of course pass through the HEPA filter. Below this you can see part of the ﬂ shaft 14 with associated control electronics 16 with electric door 9, and next to these the connector 8.
Fig. 9 shows in partial cross section the smoke ﬁ filter seen obliquely from above with the lid, ie the intake grill, removed. Here it is more clearly illustrated how the ash container 10 is designed. When the ash container is to be emptied and then typically the bag in its interior is to be removed, the lock 6 is unlocked and the suction grill is removed.
The ash container has a rectangular upper opening which normally abuts the horizontal upper part of the intake grill. Below the opening, the ash container widens towards the wide sides of the smoke filter and the inner sides of the smoke filter's wide sides, the smoke filter overflows into two handles l7a-b which are hooked onto the brackets. In this way, the ash container is kept separate from direct contact with the inside of the smoke filter, except that they are touched by the thin plastic handles, so that any heat development in the ash container does not reach the sides of the smoke filter to any great extent. In this way, the risk of fire is minimized, while service personnel can easily lift out the ash container in the handles.
To further reduce the risk of fire, the smoke filter can be equipped with a temperature sensor that switches off all electronics at elevated temperature. The elevated temperature can be a sign of a fault in the kten genuine or other electronics, which could cause a fire. The risk of this is minimized if the electronics are switched off at elevated temperature. Elevated temperature can also result from the combustion of cigarette butts in the ash container and by switching off the ytterligare the oxygen supply is further reduced, so that such combustion ceases completely.
The illustrated embodiment can of course appear in many variants and there are ﬂ your obvious details that can be executed differently. The two carbon filters arranged in a V-shape can of course be arranged in a steeper V-shape with an angle of 120 ° between ﬁlter or more, which leaves room for a larger number of ilter in a zigzag shape so that the carbon filter surface is further increased.
Furthermore, a series of filters can of course be placed parallel to each other as sealing elements in between so that the air movement up to the filter package is close perpendicular to the normal of the individual filter.
In the chosen embodiment, of course, a pair of filters in V-shape with the ash container placed in the center of the Vset are practical. All filter types can of course be replaced with filters other than the active filter or HEPA filter, but the proposed combination of filter types is particularly advantageous.
Ash and fan handling are not always necessary, but the fan and air filter function as such may be sufficient. In this case, the ash container and the funnel can be removed and the intake grill removed or replaced by a simpler designed grill, which, for example, can be completely flat, subject to the intake openings. The suction grill can, as here, be provided with such large suction openings that glowing or burning objects can be forced into them and in return be provided with a lower protective grille that prevents matches and the like from falling on the charcoal, but the protective grille can also consist of a net, a fabric-like materials with high resistance to fire. Alternatively, the intake grill may not have such small intake openings that glowing or burning objects cannot be forced into them.
The handle of the ash container can of course be separate elements and the ash container can be provided with separate spacer elements which hold the ash container in position at a distance from surrounding elements, but obviously it is advantageous that the two functions are shared by one and the same element pair. The pyramid-shaped exhaust filter 15 can, of course, be formed with eller or less than 7 four flat upper surfaces along which ellers or less than four channels along which the air dar is located.
For example, a similar smoke filter is conceivable which in a horizontal cross-section is triangular or hexagonal and the corresponding pyramid-shaped exhaust filter may then suitably have three and six flat upper surfaces along which air flows towards three and six exhaust mouths, respectively.
The motion detectors 4a-b can of course be replaced with other types of presence sensors, such as IR detectors or ultrasonic presence sensors. The simple control methods presented can be extended with different types of response to the lock to the intake grill being unlocked, for example this can activate an increased ﬂ speed or the ﬂ can then be switched off. Controllers can also control the fan to olika your different speed modes depending on the estimated number of smokers present. It can be estimated from how often the presence sensors are activated or the presence sensors can be analog, ie give a continuously increasing signal with increasing number of people near the sensors. When no smoker is nearby, the ﬂ can also be switched off completely, especially if the smoke filter does not have an ash container.

权利要求:
Claims (4)
[1]
A smoke filter (1) comprising at least one ﬂ genuine (14) and at least two air filters (11a-b), the smoke filter comprising a suction opening (3) and an exhaust opening (ISa-b), where air from the suction opening moves in in the direction of the exhaust opening and on the way the air passes the at least two air filters (1a-b), characterized in that the at least two air filters (1a-b) are not arranged in the same plane.
[2]
A smoke filter (1) according to claim 1, characterized in that the at least two air filters (11a-b) are substantially flat and where the at least two air filters (11a-b) are angled from each other.
[3]
A smoke filter (1) according to claim 2, characterized in that an ash container is arranged between the two air filters (11a-b).
[4]
A smoke filter (1) according to claim 1, characterized in that the smoke filter (1) comprises more than two air filters (1a-b), arranged in a zigzag shape. A smoke filter (1) according to claim 1, characterized by that the smoke filter (1) comprises more than two air filters (1la-b) arranged as a series of air filters where each filter is angled from the direction of air movement and where the air filters are provided with seals that force the air through either air filter in the set of filters. A smoke filter (1) according to any one of the preceding claims, characterized in that the air filters (1a-b) consist of active filters. A smoke filter (1) according to any one of the preceding claims, characterized in that the smoke filter (1) comprises, in addition to the air filters (11a-b), at least one particle filter (12) arranged on the path between the intake opening (3) and the exhaust opening (18a-b) .

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同族专利:

公开号 | 公开日

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引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

法律状态:

优先权:

申请号 | 申请日 | 专利标题

SE1200616A|SE538426C2|2012-10-10|2012-10-10|A device for filtering smoke with improved filtration efficiency|SE1200616A| SE538426C2|2012-10-10|2012-10-10|A device for filtering smoke with improved filtration efficiency|

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