FI74799C - An air supply device. - Google Patents

Description

74799 "I Supply air unit

The invention relates to a supply air device comprising a body jacket and an associated supply air duct and an air distribution chamber associated with the body jacket, wherein the supply air flow is adapted from the supply air chamber to be functionally divided into at least two parts, at least one at least one is a second supply air flow having a substantially greater throw length and impulse, and the amount, throw length and impulse of the second supply air flow can be adjusted and / or reversed by control devices to achieve the desired supply air flow in the residence zone, the second supply air flow being adjustable background.

U.S. Pat. Nos. 4,281,635 and 4,072,143 disclose apparatus in which the ventilation of kitchen spaces is arranged to take place via a hood above the kitchen hobs 20. U.S. Pat. No. 4,072,143 discloses an apparatus solution in which the air heated by the stove is adapted to be sucked through the central duct structure of the hood. The fresh air entering the kitchen is adapted to be applied to the room through a corresponding scraper structure from its side surfaces. The disadvantage of this arrangement is that it is not possible to precisely direct the air entering the kitchen to the desired destination. U.S. Pat. No. 4,281,635 discloses an apparatus solution in which fresh air entering the kitchen is adapted to come through separate controllers in the supply air duct. In the solution of that publication, the controllers have been adapted to restrict the air flow to the kitchen spaces. The arm-30 women without the trend cannot be changed in that equipment solution.

The applicant's lower FI application 851477 discloses hoods in which the removal of air from kitchen spaces has been solved. The carrier air is adapted to be blown from the lower edge of the hood towards the air opening through the cross-sectional area 35 of the hood, whereby this inflatable air acts as a carrier jet, thereby promoting the actual discharge of exhaust air out of the air opening and out of the room.

74799 1 The object of the invention is to provide an inlet device which is suitable for use in various control rooms, e.g. in the vicinity of welding workstations, whereby the supply air control is adapted to be carried out as efficiently as possible and with simple device arrangements.

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It is also an object of the invention to provide an input device which is suitable for use in connection with cupboards in kitchen spaces.

It is a particular object of the invention to provide an apparatus solution in which fresh air to be blown into room-10 rooms or the like is adapted to be adjustable in direction and speed in the living area.

The inlet device according to the invention is characterized in that the supply air device further comprises a duct opening which opens in the opposite direction to those openings from which the flows come and from which the air discharged from the duct opening is further adapted to control the first inlet flow. the opening is adapted to act as an inlet for the carrier air duct leading to the exhaust air cabinet, especially for kitchen rooms or the like, to direct the carrier air over the inner area of the mantle over 20 from its edge to the side, whereby said carrier air draws said first air flow.

According to the invention, the air entering the supply air device is adapted to branch into the air discharged through the high-speed blowing air duct and into the air discharged through the low-speed blowing air duct. The air barrier coming from the high-speed blower air duct is adapted to be adjustable in direction. Due to the coanda effect, this high-speed blowing air attracts fresh air discharged from the wide-speed blowing air duct. According to the invention, said high-speed blowing air 30 is adjustable in direction. By adjusting the direction of the high-speed blowing air in question, fresh air discharged into kitchen spaces or other spaces can then be conveniently directed.

According to the invention, the supply air chamber may comprise a plurality of adjacent inlet elements 35, each of which has its own control devices for directing air to different objects. Thus, with the help of the same exhaust device, fresh air entering the room can be directed to the desired workstations, eg in kitchen areas.

In the use according to the invention, the supply air device is adapted to be located in connection with the roof cover. In this case, the supply air device acts as a fresh air supply device to the room premises and also at the same time as a device for providing the carrier air jet of the target exhaust device to the room exhaust air, which is adapted to be collected from the room premises through the roof. The carrier air shower can also be arranged through its own supply air chamber. The chamber can be connected to the actual air distribution chamber of the device or it can be completely separate.

The invention will now be described with reference to some preferred embodiments of the invention shown in the figures, to which, however, the invention is not intended to be exclusively limited.

Figure 1A shows a side view of a supply air device according to the invention.

Fig. 1B shows a device according to the invention along the line I-I in Fig. 1.

Figure 2 shows the supply air device according to the invention in an axonometric view and in a partially schematic representation.

Figure 3A shows the operation of the device according to the invention in an operating position.

Figure 3B shows the device according to the invention in the operating position, in which the high-speed air damper is directed downwards.

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Figure 3C shows a third operating position of the supply air device according to the invention.

Figure 4 shows a preferred control device 35 of the supply air device according to the invention from the side and partly in a schematic representation.

4,74799 1 Figure 5A shows a supply air device according to the invention in its application according to the invention combined with a robe.

Figure 5B shows the supply air device fitted in a robe and the actuator 5 in a control in which the high-velocity air flow is arranged to be directed downwards.

Figure 5C shows a robe application in which the control devices for the high-speed air flow are in the closed position.

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Fig. 6 shows a cross-sectional view of a supply air diffuser connected to the robe, and in the embodiment of the figure a constant flow controller is connected to the supply air duct.

Figures 1A and 1B show a supply air device according to the invention from the side and in a cross-sectional view. The supply air device 10 comprises a body jacket 11. The body jacket 11, preferably its upper part, is connected to the air duct 12 of the device. The duct 12 is preferably a duct part with a circular cross-section connection connected to the valve part 11. The supply air duct 20 to the interior, i.e. to the air distribution chamber 13. From the air distribution chamber 13, the air is divided into high-speed blowing air as indicated by the arrow and into low-speed blowing air as indicated by the arrow. The high-speed blowing air passes through the duct opening 14 into the room A, as indicated by the arrow. In connection with the duct opening 14, control devices 15 are arranged, which are adapted to adjust the direction of the high-speed blowing air. The flow is called the second supply air flow and the flow is called the first supply air flow. Likewise, the channel opening 16 is referred to as the first channel opening and the channel opening 14 is referred to as the second channel opening.

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The blowing air branching from the air distribution chamber 13 is adapted to pass out of the device through a duct opening 16 formed by a perforated plate structure. The perforated plate 17 forms a low velocity blowing channel for the flow entering the room space A, whereby air is adapted to pass through the holes in the perforated plate 35 at low speed and with constant turbulence to the room space A. The perforated plate or several adjacent perforated plates are further designed to provide a certain resistance to the flow.

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5 74799 A high-speed air flow passes through a single control 15. The purpose of the air flow L1 entering the high-speed room A is to act as a carrier, whereby the low-speed blowing air 5 discharged into the room A by the perforated plates 17 by the coanda effect is adapted to join the high-speed blowing air

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One of the basic ideas of the invention is precisely the possibility, by means of the control device 15, to change the direction of the high-speed blowing air and thus the fresh air entering the room through the duct 10 opening and the speed in the living area.

The control device 15 preferably comprises high speed airflow direction guides 18, preferably consisting of one or more slats 15 19 adapted to be articulated to the frame structure 20 of the control device 15. As shown in Figure 2, the control device 15 may preferably consist of several adjacent slit diffusers, e.g. A air can be adapted to move in different directions at different width points in the room.

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Fig. 2 shows the supply air source according to the invention axonometrically and the structure of the control device 15 is illustrated in the figure. In the preferred embodiment of the invention shown in Fig. 2, the control device 15 consists of a plurality of adjacent control devices 15, each of which separately 25 acts as a director of its high-speed air. In the embodiment shown in Figure 2, the control device consists of three elements, elements 15a, 15b and 15c. The element 15a blows high-velocity air approximately parallel to the roof level G and then absorbs the low-speed blowing air coming through the perforated plates 17 in accordance with the coanda effect, whereby the main supply air L '^ of said room 30 is also directed to the room spaces. The control device element 15b is adjusted so that the high-speed blowing air L "^ is directed downwards. This airflow direction also directs the low-speed main supply air L '' ^ downwards. wherein the low-speed blowing air L ^ '"is also directed downwards together with the carrier air jet in question.

6 74799 1 Figures 3A-3C show the operation of the supply air device 10 according to the invention in more detail. The supply air flow, indicated by the arrow, passes into room A through the high-speed supply air duct opening 14 and the low-speed supply air duct opening 16. The air jet from the high speed blow air duct opening 14 5, marked with an arrow, is adapted to be adjustable in direction. Both the high-speed blowing air and the low-speed blowing air are adapted to be discharged from the device 10 from the same back part thereof. The high-speed blowing air attracts the fresh air discharged through the hole plates 17 by the coanda effect. Fig. 3A 10 shows flow lines of fresh air discharged from the low speed blow duct 16 and its orientation by means of a high speed carrier jet. In Fig. 3A, the high-speed blowing air L 1 is arranged to be directed substantially parallel to the ceiling surface G.

Figure 3B shows another orientation of the carrier jet. In the embodiment of Figure 3B, the high velocity carrier air jet is adapted to be directed downward. In this case, the air discharged from the low-speed air duct opening 16 is adapted to be absorbed into the high-speed supply air and thus the fresh overflow discharged from the inlet duct 16 can be directed to room A 20. The fresh air discharged through the duct opening 16 is adapted to cover approx. The carrier air jet discharged through the high-speed air duct opening 14 is thus adapted to direct the air discharged into the room A through the duct opening 16, preferably through the perforated plates 17.

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Fig. 3C shows a third operating mode of the device, in which the duct opening 14 is closed by a control device 15 and air is arranged to discharge into the room space A only through the duct opening 16, preferably the perforated plate 17.

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Figure 4 shows a preferred embodiment of the control device 15. The control device 15 is here a so-called DIFFUSER. The adjusting device 15 comprises a guide 18, which preferably consists of one or more slats 19 which are articulated at one end to the body 20. The body 20 comprises a surface 20a of the guide-35. The channel opening 14 may preferably have two louvers 19a and 19b, each of which is articulated on different sides of the channel opening 14 on opposite sides of the central axis x of the channel to the frames located therein.

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7 74799 1 to the parts 20 'and 20 ". Fig. 4 shows the discharge of air from the air distribution chamber 13 to the room A by the arrow L 1. The air marked by the arrow is adapted to pass between the slat parts 19a and 19b. By positioning the slats 5 for the discharge of air into the room A. By directing the air to hit the guide surface 20'a or 20 "a, the orientation of the air can be influenced. In the embodiment shown in Fig. 4, the air is guided by the control device 18 so that it is directed between the slats 19a and 19b to the guide surface 20 "a and further upwards. Fig. 4 shows the air entering the device 10 and in this embodiment the air is preferably adapted to enter the supply air device. via a constant flow controller 50. This flow controller 50 keeps the amount of air entering room A constant regardless of pressure differences across the fan. In the embodiment of Figure 4, the body portions 20 'and 20 "are connected by a connecting portion 20c. The connecting portion 20c is adapted to connect the body portions 20 'and 20 "15 to each other. The connecting portion 20c is adapted to connect to the wall forming portions 20'b and 20" b of the channel 14 of said body portions 20' and 20 ". and 19b such that the second slat 19a is articulated to pivot in the portion 20'b and the slat portion 19b is adapted to pivot and articulate with respect to the portion 20 "b.

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In the embodiment shown in Fig. 4, the control device 15 is connected to the body 11 of the supply air device and preferably also to the perforated plate 17, which forms an exhaust air duct 16 for the flow.

According to the invention, the supply air device is arranged as shown in Figures 5A-5C to be connected to a cabinet arranged in a kitchen or similar space, which acts as a room exhaust air collector comprising an exhaust air duct and exhaust air filters associated with the cabinet itself. Figures 5A-5C show a robe drive according to the invention with three different positions of the control device 15. The supply air device 10 according to the invention comprises a duct opening 40 adapted to act as an inlet opening of the carrier duct leading to the robe 30 for directing the carrier over the inner area of the robe from its edge to the edge. The supply air device 10 is arranged on the second side surface 31 of the hood 30. Figures 5A-5C show the hood solution 35 according to the invention in a partially schematic representation. The supply air flow indicated by the arrow is directed into the interior 13 of the inlet device 10 and further through the inlet chamber or duct 13b to the other end of the inlet device 10 74799 1 where the duct or duct openings 40 are located to direct air into the interior 33 of the duct 30. High fresh air discharge from the duct 40 is adapted to act as a carrier air for the air to be sucked in and removed from the rooms, which is adapted to exit the pattern 30 through an outlet duct 41, as indicated by the arrow.

According to the invention, the supply air device 10 thus functions not only as a device for applying fresh air introduced into the room A but also as a device for providing a carrier barrier for the air to be removed from the room. The supply air device 10 according to the invention can be adapted to be located on one outer side 31 of standard scraper solutions, i.e. known exhaust air collectors. . The hood, i.e. the exhaust air collector or the target exhaust device 30, is adapted to be located preferably near the roof G or the roof level of the room A. Figure 5A shows the effect of the carrier jet on sucking the air below the hood 30 as shown by the arrow Lg inside the hood 30 and further out through the channels 42 and 41. The interior 33 of the hood 30 is surrounded by a bottom-open jacket 35 between the ducts 42 and 41. Advantageously, air filters 34 may be present between the ducts 42 and 41. In the embodiment of Fig. 5A, high speed blowing air is directed approximately the room supply air 16 of the duct opening 16 is attracted to the room supply air.

25 At the same time, the carrying shower appears to cause the air leaving room A to flow. By channel in this context is meant a flow path or flow opening, the shape of which is not specified.

Fig. 5B shows another position of the control device 15, in which the air discharged through the opening 14 of the duct-30 is adapted to be directed downwards. In this case, fresh fresh air speed coming through the inlet duct opening 16 is also directed. Through the duct opening 40 or a plurality of duct openings 40, a high-velocity jet of carrier air is passed from one lower surface of the hood, i.e. the target exhaust device 30, to another.

Fig. 5C shows a robe drive in which the control device 15 is completely closed and no high-speed air is led through the duct 14. Here

II

35 74799 1 fresh air 16 is evenly released from the entire area of the perforated plate 17 into the room A. The carrier air jet L, still operates inside the hood 30 to enhance the removal of air from the room. The surface temperatures of kitchen appliances are very different and very high, so that the device 5 according to the invention can significantly affect the thermal comfort of persons working close to kitchen appliances by changing the air flow rate and flow direction in the living area.

According to the invention, the supply air source 10 preferably operates just above the stoves 10 and the corresponding cooking means, whereby the jet coming through and directed through the inlet channel 14 can direct and influence the air speed in the living area without increasing the air volume in the vicinity. Thus, at different points in the kitchen space, supply air can be led in the desired direction and speed through the duct opening 16 15, and by further using the constant flow controller 50 (Fig. 6), the incoming air volume can be kept at a controlled and desired value.

Figure 6 is a cross-sectional view of a preferred embodiment of the invention corresponding to Figures 5A-5C. The hood 30, i.e. the combustion air collector or the target exhaust device 20, is only partially shown. The supply air device 10 comprises a body jacket 11. The body jacket 11 and preferably its upper part is connected to a supply air duct 12, which is further associated with a constant flow regulator 50. The inlet duct 12 is preferably of circular cross-section. It is connected to the jacket part 11. From the supply air duct 12, the air enters the interior 13 of the device 10 25 as indicated by the arrow. The high-speed blowing air passes through the duct opening 14 into the room A as shown by the arrow. In connection with the duct opening 14, control devices 15 are arranged, with which the direction and air flow of the high-speed blowing air 30 can be adjusted. The blowing air branching from the interior 13 is arranged to pass out of the device through a duct opening 16 consisting of a plurality of perforated plates 17a, 17b and 17c. Each perforated plate is adapted to act as a structure for uniform turbulence for the air discharged into the room. The purpose of the perforated plate or a plurality of adjacent perforated plates 35 is further to provide a flow resistance to the flow, whereby a high-speed air flow is adapted to pass through the controller 15.

10 74799 1 The air jet L 1 controlled and directed through the exhaust duct 14 and the control devices 15 acts as a deflector for the fresh air coming through the duct opening 16. This high-velocity air flow also acts as a device that provides a certain flow rate and thus promotes the flow.

As shown in Fig. 6, the perforated plate 17a may be formed by two portions 17a 1 and 17a 2, whereby the air flow is adapted to discharge from the outlet duct 16 into the room space both downwards and to the side.

As shown in Fig. 6, the insulator 21 is limited to the interior 13, which is adapted 10 to act as a sound coach for the fresh air entering the interior 13. The insulator 21 is preferably located obliquely to the incoming air. This sloping surface directs the incoming flow towards the outlet channel openings 14 and 16.

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Claims (1)

11. A supply air device (10) comprising a body sleeve (11) and an associated supply air duct (12) and an air distribution chamber (13) associated with the body sleeve, the supply air flow in the supply malt (10) being arranged to be functionally divided from the supply air chamber (13) at least one is a first input equation (L 1) having a small throw length and a small pulse, and at least one is a second input equation (I 1) having a substantially greater throw length and pulse, and a second input flux length (L 2) the amount of air, the flow rate and the impulse can be adjusted and / or the direction changed by the adjusting devices (15) to obtain the desired flow rate at the residence time, the second flow rate (I ^) being adaptable to induce a first supply flow (L ^), further comprising an opening (40) that opens in the opposite direction to those openings from which the flows (L 1 and L 2) and from which the air discharged from the duct opening (40) is further adapted to control the first inlet flow (L 1), which duct opening (40) is adapted to act as a supply air duct to the exhaust air duct. to direct the interior of the robe (30) from its edge to the edge, said carrier carrying said first air flow (L 1). 25 30 35