EP3143340A1

EP3143340A1 - Room-specific ventilation beam and ventilation beam order

Info

Publication number: EP3143340A1
Application number: EP15770188.9A
Authority: EP
Inventors: Jari Nokkala
Original assignee: Janovent Oy
Current assignee: Janovent Oy
Priority date: 2014-03-26
Filing date: 2015-03-25
Publication date: 2017-03-22
Also published as: EP3143340A4; FI20140087A; WO2015144975A1

Abstract

Room-specific, room ((8) wall (82) or ceiling (81) mounted ventilation beam (1 ), into which an inflow of contaminated and supply air inflow (V, P¹, R¹) can be simultaneously conducted from a room (8), and from which the outflow of contaminated air (V; P²) as well as the supply air (V: R²) can be removed to the outside, known in that the ventilation beam (1 ) has at least one heat exchanger (5), such as a plate heat exchanger (51, 52) or a tubular heat exchanger (53), in the longitudinal direction of the ventilation beam (1); through this heat exchanger (5) the flow of supply air (V; R) and contaminated air (V; P) can be transported essentially counter-current to each other, and in addition the ventilation beam has functionally at least one air filter (4) connected, in order to remove dirt particles from the air flow, as well as at least one fan (3) for controlling inflows and outflows of contaminated and supply air (V; R¹, R², P¹, P²) conducted into and out of the heat exchanger (5).

Description

P T/FI2015/000011

Room-specific ventilation beam and ventilation beam order

The present invention relates to a ventilation beam mounted in a room, according to the preamble of patent claim 1.

The invention also relates to the ventilation beam order mounted in the room, according to the preamble of patent claim 13.

Current centralised ventilation systems are based almost without exception to the fact that all incoming and outgoing air is passed through the one and same ventilation device. This results in a relatively complex duct system, through which air is pushed through with fans. The structure is also made expensive by the fact that air supply ducts coming from outside must be isolated with, for example, mineral wool, in order to control problems from water condensation. The complex metal sheet structure, which is made of multiple parts, is expensive and requires energy-consuming fans in order to overcome air resistance

Another drawback of centralised ventilation systems is that the ventilation device is designed to be made as compact as possible, and fitted into the smallest possible space on the inside of a cubical outer frame (housing), and contains filters, fans and plates that are equipped with their own frame.

Around the frame of the plates, there are air guide plates, and around these is the actual outer frame (housing). The housings of ventilation devices are standardised; they consist of multiple thin gauge metal sheets, and are sealed with a large amount of silicone and various sealants. Ventilation devices are as small as possible, which is also why the heat exchangers put in them need to be as small as possible.

In practice, this means that a maximum possible amount of heat-conducting plate surface must be incorporated into a minimal space, in such a way, however, that the airflow resistance does not become too large. A crucial factor in the efficiency of heat recovery is the surface area of the metal plates within the heat exchanger, through which heat is transferred. Another factor affecting the quality of a heat exchanger is how straight air can be made to flow inside the heat exchanger so that the maximum possible amount of heated air is in contact with the metal surface for as long as possible. What makes this difficult is the fact that the small FI2015/000011

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size of the heat exchanger increases the speed of the air in constricted iameilar structures, reducing the effective time of the heat transfer.

Thus, in such a centralised ventilation system there are numerous problems:

It is difficult to boost the power of a ventilation system that is equipped with a compact ventilation unit because it would require an increase in the surface area of the plates of a plate heat exchanger, which would require the expansion of the actual outer frame (housing). Because the cases are fixed sizes, increasing the plates' surface area would require the ventilation unit to be fully re- dimensioned and designed in order to fit the new housing size.

A plate heat exchanger is usually built by a subcontractor, which means the effects of the structure of the plate heat exchanger on the structure of the actual housing (outer frame/ventilation unit) is not considered; instead the ventilation unit is dimensioned on the basis of the requirements of the heat exchanger. In general, the housing is made as thermally compact and small as possible. Such a housing requires powerful fans and makes the structure of the ventilation device complicated and expensive in terms of acquisition costs, expensive:

-The structure around the ventilation unit is complex, because it consists of the outer frame, inner frame and the air guide plates. Such a structure has a lot of connections to be sealed.

-A ventilation system created with state of the art plate heat exchangers has a large heat exchange surface area in a small space, so to obtain sufficient heat exchange power from the plate heat exchanger, the speed of air between the plates must be increased. This requires high-power fans as air must be pushed through the narrow structures.

-Modern plate heat exchangers are often difficult to install into the intermediate floors of terraced house, due to the shape (cubic) of the housing.

With the above state of the art and the problems identified therein as the starting point, the invention's first aim was to create a decentralised, apartment-specific ventilation unit, whose investment and operating costs would be significantly than that of the ventilation units of centralised ventilation systems. The other main objective was to create an apartment-specific ventilation unit in which the ventilation power could be adjusted easily and the housing structure of the ventilation unit could be modified easily depending on where it is located.

The above objectives are achieved with a ventilation beam arranged for a room in accordance with patent claim 1 , as well as with the ventilation beam order in accordance with patent claim 13.

More precisely, the invention relates to the ventilation beam in accordance with patent claim 1.

The invention also relates to the ventilation beam order in accordance with patent claim 13.

The invention relates more specifically to a room-specific ventilation beam mounted on a wall or ceiling, into which the inflow of contaminated air and supply air can be conducted from the room; and the outflow of contaminated air and supply air can be removed from inside of it out.

Inside the ventilation beam, there is at least one heat exchanger provided, such as a plate stack or a tubular heat exchanger, longitudinal with the ventilation beam; the flow of contaminated and supply air through the heat exchanger is mostly transportable counter current to each other. In addition, the ventilation beam has at least one functionally connected air filter to remove dirt particles from the air flow, as well as one fan to control the inflow and outflow of contaminated and supply air into and out of the heat exchanger.

The invention relates more particularly to a room-specific, wall or ceiling-mounted ventilation beam order which contains two or more ventilation beams connected in series whereby each of the ventilation beams, into which the flow of both the contaminated air from the room and supply air can be conducted, and from the inside of which the outflow of contaminated air and supply air can be conducted to the outside of the ventilation beam. Within the ventilation beam order comprised of interconnected ventilation beams, inside of a ventilation beam, there are

-at least two heat exchangers such as a plate stack or tubular heat exchanger longitudinal to the ventilation beam in series; hence the flow of supply air and contaminated air through the heat exchanger can be conducted mainly counter current to each other. In addition, at least two air filters are functionally connected to the ventilation beam order in order to remove dirt particles from the air flows, as well as two fans for regulating the inflow and outflows of the contaminated air and supply air that is conducted to and from the inside of the heat exchangers.

In the preferred embodiment of the invention, a group of housings are arranged between the cover and base of the ventilation beam; these housings are each bordered on the one hand by the cover and base, and on the other hand by walls that are connected to the cover and base and transverse to the direction of the cover and base; hence the said housing group consists of two end housings at the ends of the ventilation beam, which have at least one housing that is longitudinal to the beam for the heat exchanger, and at least one air transmission housing that is longitudinal to the beam for the flow of contaminated air and/or supply air, whereby the first longitudinal side wall of each air transmission housing is also the side wall of the ventilation beam, and the second longitudinal side wall is also the longitudinal side wall of the heat exchanger housing or the longitudinal side wall pair of the heat exchanger housing, which have an air gap between them.

Preferably, on the inside of the ventilation beam there is one longitudinal housing for the heat exchanger, one air transmission housing longitudinal to the beam for the flow of dirty air and one air transmission housing for the flow of contaminated air and one air transmission housing for the flow of supply air, in such a way that each air transmission housing is bordered on one longitudinal side with the side wall of the heat exchanger housing and on one longitudinal side wall with the longitudinal outer wall of the beam. The air transmission housings extend from one end housing to another in the direction longitudinal to the ventilation beam, or from the end housing to the end wall of the ventilation beam.

The invention is based on a relatively flat or thin ventilation beam installed in a room; inside the ventilation beam is a heat exchanger, such as a plate or tubular heat exchanger. In addition, fans and filters have been placed inside the ventilation beam in order to control and purify the inflows and outflows of supply and clean air. This way, a low-cost, structurally simple ventilation unit which can be placed in a room space, is achieved. By placing ventilation beams in series, the power of a ventilation unit can be increased in a simple manner, without compromising on the structural simplicity of the individual heat exchanger. In a preferred embodiment of the invention, a plate heat exchanger is placed inside the ventilation beam; in its plate pack there is a group of essentially longitudinal, elongated thin plates; the front surface of plate pack's longitudinal side wall is formed by the plate ends, where each plate of the plate pack is attached with a mount to the end of at least one other adjacent plate of the said plate pack; therefore the plane of the mount is essentially transverse to the plane of the plates.

Preferably, the spacing of two adjacent plates of the plate pack are always equipped with several spacers made of the material of the plates or with spacers that are made of material different from the plates and consist of a pole that is transverse in relation to the plates and which is connected to a ferrule or similar item at each plate spacing in order to keep the distance between the plates constant.

As a result of a ventilation beam with such a heat exchanger, air passes inside the heat exchanger as a mostly laminar flow; hence the heat exchanger can be made to be long in order to increase the heat transfer efficiency..

In another preferred embodiment of the invention, the ventilation beam is located in a room in such a way that the cover is in contact with the ceiling or to a material or wall affixed to the ceiling; contaminated air is designed to flow into the ventilation beam through an opening in the base and supply air is designed to enter the room space through a gap between the cover and ceiling or wall.

This kind of ventilation beam, in which air enters the room between the heat exchanger and the ceiling or wall is preferable when, for example, the airflow to the room must not interfere with the air mass in the room (e.g. clean tech applications).

In yet another preferred embodiment of the invention, a group of housings are arranged between the cover and base of each of the ventilation beams, each of which are bordered on one side by a cover and base, and on the other side by walls that are connected to the cover and bottom and are transverse to the direction of the cover and cover, in which case the said housing is comprised of

- at least end housings that are formed in the outermost ventilation beams of the ventilation beam order longitudinally, 1

6

-at least two housings longitudinal to the beam are provided for the heat exchanger mostly between the outermost end housings, as well as at least one air transmission housing longitudinal to the beam for the flow of contaminated air and/or supply air, whereby the first longitudinal side wall of each air transmission housing is also the outer wail of the ventilation beam and the other longitudinal side wall is also the longitudinal side wall of the heat exchanger housing or a longitudinal pair of side walls of the air exchanger housing, which have an air gap between them.

Next the invention is illustrated in more detail by referring to the attached drawings.

Figures 1A - 1 C shows the ceiling-mounted ventilation beam.

Figures 1 D and 1 E shows a perspective view of one preferred embodiment of the ventilation beam in accordance with the present invention, the cover is presented separately.

Figure 1 F shows another embodiment of an air conditioning beam according to the present invention presented in the same perspective as the embodiments of the invention in figures 1 D and 1 E.

Figure 1 G shows yet another embodiment of the ventilation beam according to the present invention shown in the same view as the invention embodiments shown in figures 1 D and 1 E, as well as 1 F.

Figure 2A is a perspective-view of a modular ventilation beam order consisting of multiple ventilation beams.

Figure 2B shows the inner parts of the ventilation beam of figure 2A, with the ceiling being shown separately.

Figure 2C shows, in the same view as figure 2B, a slightly different embodiment of the ventilation beam order shown in figure 2B in which the end housings are located on the same end of the ventilation beam order.

Figure 2D shows, in the same view as in figure 2C, a slightly different embodiment of the ventilation beam order presented in figure 2C, which has only one end housing.

Figure 3 illustrates the installation of ventilation beams into a room,

Figures 4A-4G illustrates an embodiment of the heat exchanger's plate pack that is installed to the ventilation beam according to the invention.

Next, the main structures of the ventilation beam 1 and the ventilation beam order will be presented, as well as the different aspects of the invention shown in the figures.

Figure 1 A is a view from the outside of ventilation beam 1 according to the present invention. Ventilation beam 1 is generally comprised of a rectangular, flat elongated, hollow beam, where the direction of the base 1 a and the cover 1 b is essentially the same. The outer walls 1c are located between the base 1a and the cover 1 b, going longitudinal with the ventilation beam, at right angles with the base and cover, and end walls 1 d which are connected at right angles to the outer walls. The cover 1 of the ventilation beam is in two parts and consists of, as viewed from base 1 , of the upper part 1 b1 , as well as the lower part of the cover 1b2 located at different levels.

Figure 1 B and 1 C show the installation method of an air conditioning beam to the ceiling of the room 8; in the vicinity of 81. The ventilation beam is placed in the room 8 in such a way that the highest part of its cover 1b; 1 b1 is in contact with the room's ceiling 81. At the cover's lower part 1 b; 1 b2, close to the first end wall 1d; 1d' is the opening 1b5' (supply air outlet), from which the supply air outflow V; R; R² 1 b, goes between lower part 1 b2 and the upper part 1 b1 of the cover I b.The outflow V of supply air; R; R² which enters room 8 from within the ventilation beam 1 can then be discharged into the room 8 from between the cover 1 b and the ceiling 81 of ventilation beam 1 , more specifically, the gap remaining between the lower part 1 b2 of the cover and the ceiling 81 because the upper part 1 b1 of the cover 1 is attached to the ceiling.

The inflow of supply air V; R; R¹ is designed to enter the ventilation beam 1 through the end opening (supply air inlet) 1d5; 1d5' in the first end wall of the ventilation beam 1d; 1 d'.

The inflow of contaminated air V; P; P¹ entering the ventilation beam 1 from the room 8 via the inlet for contaminated air at the base 1a of the ventilation beam 1 , near the first end wall 1d\ The outflow of contaminated air V; P; P² in turn, is designed to be discharged to the first end wall 1 d' on the front side of the ventilation beam, through the end opening (contaminated air outlet) 1d5", of the other end wall 1d;1", which is on the opposite end of the ventilation beam longitudinally.

The ventilation beam 1 can be installed in a similar way into contact with wall 82 of room 8, as illustrated by way of example in figure 3. These rooms 8; 8\ 8², 8³ have been illustrated in figure 3, in which a ventilation beam according to the present invention has been installed on the opposing walls 82; 82¹ and 82; 82³ of the middle room 8; 8\ in the same way as has been presented in figures 1 B and 1 C for the ceiling mounted ventilation beam 1. 1 The top part 1 b; 1 b1 of the cover of the ventilation beam 1 is connected in contact with the wall 82; 82 or 82³ of room 8. Passage for outflow V; R; R² of supply air is designed between the lower part 1 b2 and the upper parti b1 of the cover 1 b in the same way as has been illtStrated in figures 1A -1C for the ceiling 8; 81 for connected ventilation beam.

Thus the outflow of supply air V; R; R2 from inside the ventilation beam 1 to the room 8 is able be discharged into the room 8; 8¹ from between the cover 1 b of the ventilation beam 1 and the wall 82; 82¹ and 82; 82³ of room 8. Alternatively, the air outflow V; R; R² originally directed between the cover 1 b of the ventilation beam 1 and wall 82; 82³ of room 8 can also be directed to the adjacent room 8; 8² through the wall 82; 82³ as has been illustrated in the figure presented on the right at the part of the ventilation beam 1 ; 1" shown. Figure 3 also illustrates how it is possible to bring the inflow R; R¹ of supply air or inflow P; P¹ of contaminated air into the same left-sided ventilation beam 1 ; 1" from, for example, the adjacent room 8; 8³ or 8; 8² respectively, via the ventilation duct 7; 72 or 7; 71.

Figure 3 also shows how the supply air inflow R² can be brought directly into the room 8; 81 using the ventilation beam 1 ; 1' on the left also from between the lower part 1 b2 and upper part 1b1 of the cover 1 b of ventilation beam 1 ; 1' if the ventilation beam is mounted to the wall 82; 82¹ from its base 1 c.

Figure 3 also presents, how the end housing 21 and fan 3, which are further illustrated in figures 1 D -1G, can be located outside the ventilation beam 1 , for example in the next room 82 \ One of the preferred embodiments of the ventilation beam 1 according to the present invention is illustrated in figures 1 D-1 E. The ventilation beam embodiments presented in figures 1 F and 1G mainly differ from the ventilation beam presented in figures 1 D-1 E in terms of the heat exchanger 5.

A group of housings 2 has been arranged between the cover 1 b and base 1 a of the ventilation beam 1. Each housing is bordered on the one hand by the cover 1 b and the base 1a, and on the other hand by a group of walls 20 that is transverse to the plane of the cover and base, and attached to the cover and base.

In the embodiments according to the present invention shown in figures 1D - 1G, the housing group 2 always includes two end housing 21 , 21 ' and 21 ; 21 'at both ends of the ventilation beam, close to the corresponding end walls 1d; 1 d' and 1d; 1d"; each of these housing groups are bordered by the said transverse end walls 1d; 1 d' and 1 d; 1 d" as well as the transverse partition wall 21a of the ventilation beam.

Fan 3 has been mounted in the end housing 21 ; 21', 21" of both ends of the ventilation beam. The end housing, and the fan 3 and end housing located in it can also be placed outside the ventilation beam 1 , as shown in figure 3. In this case, the fan is in air connection with the ventilation beam with a suitable ventilation duct 7. As previously mentioned, in connection with figure 3's delcViption, this provides the advantage, that the fans 3 controlling the air flows coming in to the ventilation beam and leaving the ventilation beam can thus be placed, for example, in the adjacent room premises, which makes it possible to reduce the length of the ventilation beam.

Furthermore, a housing longitudinal to the beam for the heat exchanger 2; 22 is provided between the said end housings in their entirety. Two heat exchanger housings 22 between the housing, parallel with the longitudinal direction of the ventilation beam partition walls 22a; 22a ', 22a".

On both sides of the said heat exchanger housing 22 are transmission housings 23; 23', 23' longitudinal to the ventilation beam for contaminated air flow V; P and supply air flow V; R. The first longitudinal wall 23a of each air transmission housing 23; 23' and 23; 23" is simultaneously the outer wall 1 ; 1c of the ventilation beam, and the other longitudinal partition wall 23a is also the longitudinal partition wall 22a of the heat exchanger housing 22 or the longitudinal partition wall pair 22a of the heat exchanger housing, between which there is an air gap. Depending on the structure of the end housing 21 , the air transmission housings 23; 23' and 23; 23" are either between the end housings 21 , 21' and 21 : 21 " or extend from the end housing 21 to the end wall 1d opposite the ventilation beam 1.

In a preferred embodiment of the invention, the longitudinal wall 23a of transmission housing 23 is also the outer wall 1 c of the ventilation beam, is equipped with thermal insulation, such as nanoparticles. Preferably, this transmission housing 23 is intended for supply air.

In the preferred embodiment of the present invention presented in figures 1 D and 1 E, plate heat exchanger 5; 51 is placed into the housing 22 intended for the heat exchanger of ventilation beam 1 ; the exchanger is described in greater detail in figures 4A -4G.

As shown in figures 4A-4G and figures 1 D and 1 E, there is a group of essentially longitudinal, elongated thin gauge plates 3 in plate pack 60 of this kind of heat exchanger 51. The front surface 62 of the longitudinal side of plate pack 60 consists of a group of side ends 62a of plates 3, in which each plate is attached with a mount 62c to the end of at least one other plate of said adjacent plate pack 60, in which case the plane of said mount 62c is essentially transverse to the plane of the plate pack's plates 3. These mounts 62c together form a shut-off apparatus 62b of the uniform front surface 62 of the side edge. In the plate heat exchanger, the front surface 62 of the plate pack 60 is often also equipped with a plate element that covers the side edge. The openings A provided on the front surface 62 of the plate pack and shown in figures 1 D - 1G and 2A - 2D consist of the plate that covers the front surface 62 of the side edge and of the gaps formed every other mount 62c under it. When the airflow V goes from opening A it gets in the plate pack through every other plate gap 65.

Also, the front surface 61 of each end of the plate pack 60 is equipped with a shut-off apparatus 61b, which is formed from a group of seals of plate gaps 65. As can be seen in figure 4B, among others, every other gap 65 of the shut-off apparatus 61 b of the front surface 61 of the end is preferably equipped with a plate gap shut-off apparatus. Thus, air can flow through the front surface 61 of an end equipped with such a shut-off apparatus to every other plate gap 65.

As can also be seen, inter alia, in figures 4F and 4G, the plate gaps 65 of two adjacent plates 3 of plate pack 60 are equipped with several spacers 67 made of the plate material or spacers 67 made of a different material, which are formed from a pole 672, which is transverse to the direction of the plates, and connected at each plate gap with a ferrule 671 or something similar to keep a constant distance between the plates 3, which limit the plate gap.

The functioning of the ventilation beam in figure 1 D is as follows: inflow of supply R¹ is sucked into the first end housing 21 ; 21¹ by means of fan 3; 3¹ of the said end housing 21 ' .After this the fan 3; 3¹ blows the supply air flow V; R that has entered the end housing 21 ; 21¹ to the transmission housing 23; 23" through the opening in the partition wall 21a of the end housing. The transmission housing 23" for supply air flow is located between the end housings 21 ; 21¹ and 21 ; 21" and it is thus restricted longitudinally by the partition walls 21a of these end housings 21 ; 21. The air flow of supply air V; R is designed to rise prior to the said partition wall 21a of the other end housing 21 ; 21" toward the opening 1 b of the cover, from whence the flow of supply air passes between the upper parti b; 1 b1 of the cover; and the lower part of the cover 1 ; 1 b2 towards the other opening 1 b5; 1 b5² of the cover 1 b; this opening is located near the other end casing 21 , immediately above the housing 22 of the heat exchanger. In the heat exchanger 51 , the front surfaces 62 of plate pack 60 are equipped with the above-described shut-off apparatus 62b of the front surface of the side edge, which is formed by the spacers 62c between the side edges of plates, and the front surface 61 of the each end of the plate pack is equipped with a shut-off apparatus 61 b of the end, in which every other plate gap 65 is closed.

The shut-off apparatus 62b of the plate pack now has another opening A; A ", which is located directly below another opening 1 b5² of cover 1 b 1 b5². When the flow of supply air passes from the cover 1 b5 of the A cover down to the opening 1 b5¹ of the side edge it can flow into the plate pack 60 through every other plate gap 65 at the opening A.

Flow of supply air V; R passes inside the plate pack 60 back through towards the first end housing 21 ; 21', where the first opening A; A" is arranged on the shut-off apparatus 62b of the front surface 62 of the side edge of the plate pack. The flow of supply air V; R passes through the first opening A; A* of the shut-off apparatus of the side edge, as well as through the cover's first opening IbS directly above, and discharges as an outflow of supply air V; R; R² into the room between the upper part 1 b; 1 b1 and the lower part 1 ; 1b2 of the cover.

The inflow of contaminated V; P; P¹ in turn, arrives through the opening in the base 1a of the ventilation beam 1 to the housing 22 of the heat exchanger, close to the end of the heat exchanger 5; 51 in the housing 22. The contaminated airflow passes, due to the fan's 3; 3" suction in the second end housing 2; 21 ", into the plate pack through the openings in every other plate gap 65 of the shut- off apparatus 61 b of front surface 61 of the end. Warm contaminated air flow V; P passes into the plate pack 60 at every second plate gap and the supply air flow V; R between every other plate gap. Flows of supply air R and contaminated air P pass through interlocked, mainly counter-current in relation to each other; as a result, the contaminated air flow P also gives off heat to the supply air flow V; R. The contaminated air flow V; P exits through the openings in the shut-off apparatus

61 b of the front surface 61 of the other end housing 21 ". Thereafter, the said airflow passes from gap 225, 235 of the contaminated air transmission housing 23; 23' of heat exchanger housing 22 into the contaminated air transmission housing 235; 235" further from the opening 225, 235 in the partition wall 21a between said transmission housing 23' and the other housing's 21 " to the end housing and outside by means of a fan from the opening of the end wail 1d of the ventilation beam.

Figure 1 E shows an otherwise similar ventilation beam as in figure 1 D but now the

supply air transmission housing 23; 23 'extends from the first end housing 21 ; 21 ' to the other end wall 1 d, 1 d" of the ventilation beam 1. Thus, this transmission housing 23" is restricted longitudinally by the first end housing's partition wall 21 a

and the second end wall 1 d. The contaminated air transmission housing 23; 23' extends from the first end housing 21 ; 21' to the second end housing 21 ; 21 " in the same way as the transmission housings in figure 1 d. In this ventilation beam the inflows and outflows of contaminated air and supply air, as weli as the flows of contaminated air and supply air flows inside the heat exchanger 51 are almost the same as in figure 1 D, except that the contaminated air exhaust flow P2 is blown out through the end housing that is an extension of the contaminated air transmission housing.

If the ventilation beam presented in figure 1 E is attached in series with another ventilation beam, an opening is opened in the ventilation beam's other end wall 1 d; 1d", which confines the transmission housing in the longitudinal direction, from there the flow of supply air V; R passes through to the next ventilation beam, as is further illustrated in the ventilation beam order 10 of Figures 2C and

2D.

The ventilation beams presented in figures 1 F and 1 G differ from the ventilation beam of Figure 1 D mainly in that the inner, longitudinal partition wall 22a, 23a of The supply transmission housing 23; 23", which is bordered by housing 22 of the heat exchanger, is comprised of a partition wall pair between which there is an air gap. In addition, in figure 1 F the heat exchanger housing 22 has a plate heat exchanger available in the market, in which the ends of the plates that form the front surface of the side edge of the plate pack are always pressed together. In figure 1 G the heat exchanger housing 22 has a tubular heat exchanger available on the market, which consists of a round honeycomb-like disc, which rotates slowly between the supply and the exhaust air. The honeycomb stores the heat contained in the contaminated exhaust air; this heat is transferred to the supply airflow as the heat exchanger honeycomb rotates. The airflows goes in the opposite direction in relation to the honeycomb.

Figures 2A -2D, on the other hand, present the ventilation beam orders 10a in accordance with the present invention, which are comprised of successively connected ventilation beams that have been described previously. As shown in figure 2A, the ventilation beam order is comprised of at least two, in the figure three, successively installed ventilation beams 1 The structure of these ventilation beams, as well as the flow of contaminated and supply air inside the ventilation beam and the heat exchanger 5 inside it are otherwise similar to that already described in figures 1 -2, but with the exception, that the transmission housings 23; 23' and 23; 23" for contaminated and supply air continue from one end of the ventilation beam to the other end. Each of the transmission housings 23; 23', 23" are located between the fan-equipped end housing 21 end wall 1d of the outermost ventilation beam.

The air flow in the transmission housing 23; 23', 23' otherwise passes through in the same way as in individual ventilation beams, but part of the transmission housing 23; 23" or 23; 23' flowing fresh or dirty air V; R or V; P runs all the way to the next ventilation beam.

As shown in figure 2A, the ventilation beam order 10 that is formed from three ventilation beams 1 is constricted by the base 1 a and the cover 1 b, which respectively are formed by the common base 1a, 1 a, 1a and cover 1b, 1 b, 1 b of the ventilation beams 1 ; 1 ', 1 ", 1" '. In addition, the ventilation beam order 10 is bordered by end wall 1d; 1d, 1d" which consist of the end walls of the outermost ventilation beams and longitudinal side or outer walls 1 c; 1c\ 1 c'", which are formed from common outer walls of the interconnected ventilation beams 1 ; 1', 1", 1 "". Inflow of supply air R; R1 arrives into the ventilation beam order 10 to the end housing bordered by the first end wall 1d; 1d\ and the outflow of supply air R; R² is discharged from inside the ventilation beam order 10 to the cover 1 b of the ventilation beam, through the openings 1b¹, 1 b³, 1 b⁵ in the cover and on into the room through the gaps between the lower part 1b2 and upper part 1b1 of each ventilation beam. Inflow of contaminated air P; P enters into the housing 22 of the ventilation beam near the first end housing and exits from an opening in the opposite end wall of the ventilation beam as the contaminated air exhaust flow V; P; P². Inside the ventilation beam order 1 , the contaminated air flow V; P and supply air flow V; R go via the heat exchanger as has already been presented in connection with the individual ventilation beams in figures 1 D -1G, whereby the flow of contaminated warm air V; P releases heat and possibly humidity to the cold supply air flow V; R.

The troublesome maintenance and cleaning of known ventilation systems can be solved, by attaching a hinge SR, such as a thin strip-like plastic hinge or piano hinge, with which the structure opens up, and facilitates the installation, eases access and makes the structure easy to maintain.

Known ventilation systems require a lot of specialised expertise and design work by multi-skilled professionals; to simplify this complexity related to acquisition, the structure is made into a multi-functional, adaptable structure that is easy to acquire.

Claims

Patent claims

1. Room-specific ventilation beam (1 ) mounted on the wall (82) or ceiling (81 ) of the room (8); the inflow of both contaminated air from the room (8) and the supply air (V; P\ R¹) can be conducted to the inside of it; and from the inside of it the outflow of contaminated air (V, P²) and the supply air outflow (V; R²) can be removed to the outside, known for the fact that inside the ventilation beam (1 ) there is at least one heat exchanger (5), such as a plate heat exchanger (51 , 52) or a tubular heat exchanger (53), in the longitudinal direction with the ventilation beam (1 ), where the supply air flow (V; R) and a contaminated air flow (V; P) can be passed through the heat exchanger (5) essentially counter- current to each other, and in addition the ventilation beam has been functionally connected with at least one air filter (4) in order to remove dirt particles from the air flow, as well as at least one fan (3) for controlling the supply and exhaust flows of contaminated and supply air (V; R\ R², P¹ , P² ), which are conducted into the heat exchanger (5) and discharged out of it.

2. The room-specific ventilation beam (1 ) according to claim 1 known for the fact that the ventilation beam (1 ) is connected to the ventilation duct (7; 71 , or 7; 72), with which the outflow of contaminated air (P²) can be discharged to the outside of the room (8) or with which the inflow of supply air (R¹) can be brought to the inside of the ventilation beam (1 ) located in the first room (8; 8¹) from another room (8², 8³)

3. A ventilation beam (1 ) according to patent claim 1 or 2, known in that, between the cover (1b) and the base (1 a) of the ventilation beam (1 ) there is a group of housings (2), each of which are bordered by the cover (1 b) and base (1a) and by walls (21 ) which are connected to the cover and base and transverse to the direction of the cover and base; the said housing group (2) is thus

comprised of two end housings (21 ; 21', 21") at each end of the ventilation beam, between which there is at least one housing longitudinal to the beam for the heat exchanger (2; 22), and at least one air transmission housing (2; 23) longitudinal with the beam for the flow of contaminated air and/or supply air, whereupon the first longitudinal partition wall (23a) of each air transmission housing (2; 23) is also the ventilation beam's outer wall (1 ; 1c) and the second longitudinal partition wall (23a) is also the heat exchanger housing's longitudinal partition wall (22a) or the heat exchanger housing's longitudinal partition wall pair, between which there is an air gap.

4. The ventilation beam as claimed in patent claim 3, known in that inside the ventilation beam (1 ) there is one housing longitudinal to the beam for the heat exchanger (22), one air transmission housing longitudinal to the beam (23) for the flow of contaminated air (V; P) and one air transmission housing longitudinal to the beam (23) for the flow of supply air (V; R) so that each air transmission housing (23) extends in the longitudinal direction from one end housing to the other or from the end housing to the end wall (1d) of the ventilation beam, and in the crosswise direction the air transmission housing is confined by the longitudinal partition wall 23a of the heat exchanger beam or a partition wall pair, between which there is an air gap, and which at the same time are the partition walls (22a), of the heat exchanger housing (22) and the longitudinal wall (23a) of the ventilation beam, which is also the longitudinal outer wall of the beam (1 c).

5. The ventilation beam (1 ) as claimed in patent claim 4 known in that

15 the longitudinal wall (23a) of the transmission housing (23), which is at the same time the ventilation beam's outer wall (1c) is equipped with heat insulation such as nano particles.

6. A ventilation beam (1 ) according to any one of the preceding patent claims known in that, a fan (3) is placed in the end housings at both ends of the beam (21 ; 21 ', 21 ").

7. A ventilation beam (1 ) according to any one of the preceding patent claims known in that the heat exchanger (5) is a tubular plate heat exchanger

(53).

8. A ventilation beam (1 ) according to any one of the preceding 1-6 patent claims, known in that the heat exchanger (5) is a plate heat exchanger (51 , 52), that includes a plate pack (60).

9. A ventilation beam (1 ) according to claim 8, known in that the plate heat exchanger's (51 ) plate pack (60) is a set of essentially longitudinal, elongated thin plates (3), in which the front surface (62) of the longitudinal side edge of the plate pack is formed by the side ends of the plates (62a), where the end of the plate of each plate pack is connected with a mount (62b) to at least one other end of a plate the said adjacent plate pack, whereupon the plane of the said mount (62b) is essentially transverse to the plane of the plates (3).

10. A ventilation beam (1 ) according to patent claim 9, known in that the plate gaps (65) of two adjacent plates of the plate pack (60) are equipped with several spacers made of the material of the said plates (67) or spacers made from another material (67), which are formed from a pole (672) that is transverse in relation to the direction of the plates; the pole is connected at each plate gap with a ferrule (671 ) or the like to keep the distant between plates, which defines the plate gap, at a constant.

11. A ventilation beam (1 ) as claimed in patent claim 8, known in that the front surface (62) of the longitudinal side edge of the plate pack consists of the side ends of the plates (62a), in which the side end of each plate is clamped to the side end of the adjacent plate pack.

12. A ventilation beam (1 ) according to any one of the preceding claims, known in that the ventilation beam is placed in the room (8) in such a way that the top portion of the cover (1 b, 1 b1 ), as seen from its base (1 a), is in contact with the ceiling (81 ) or wall (82) of the same room, the contaminated air (V; P) is designed to come into the ventilation beam through the opening in the base (1a) and the supply air (V; R) is designed to come to the room through the gap between the lower part (1 b; 1 b2 ) of the cover and the ceiling or wall.

13. Room-specific, room (8) wall (82) or ceiling (81 ) mounted ventilation beam order (10) comprising two or more ventilation beams (1 ) connected in series, whereby each of the ventilation beams into which the inflow of contaminated and supply air (V; P R¹) can be conducted from the room, and from inside of which outflows of contaminated air and supply air (V; P² R²) can be conducted to the outside of the ventilation beam known in that inside the interconnected ventilation beams (1 ) that form a ventilation beam order (10), there are at least two heat exchangers (5), such as plate packs (51 , 52) or tubular heat exchangers (53) in series in the longitudinal direction of the ventilation beam order, whereby the flow of supply air (V; R) and contaminated air (V; P) can be conducted through each heat exchanger (5), essentially counter-current to each other, and in addition the ventilation beam order (10) is functionally connected to,

-at least two air filters (4) to remove dirt particles from the air flows (V; R, P), and - at least two fans (3) to direct the inflows and outflows of contaminated air and supply air into and out of the heat exchangers.

14. A ventilation beam order (10) according to patent claim 13 known in that a group of housings (2) is located between the cover (1 b) and base (1 a) of each ventilation beam, each of which are confined on the one hand by a cover and base (1 b, 1a) and on the other hand to walls (21 ) that are connected to the cover and base and are transverse in relation to the plane of the cover and base, whereby the said housing group comprises of

- at least end housings (21 ; 21 ', 21") formed at the outermost ventilation beams (A, C) of the ventilation beam order (1 ),

- at least two housings (20) longitudinal to the beam for the heat exchangers (5) that are mounted between the two outermost end housings (21 ), and at least one air transmission housing (23) longitudinal in the direction of the beam between the end housings, or between the end housing (21 ) and the end wall (1d) for the flow of contaminated air and/or supply air (V; P, R), whereby the first longitudinal side wa!l (23a) of each air transmission housing (23) is at the same time the outer wall (1 c) of the ventilation beam, and the longitudinal side wall (23a) of the other air transmission housing (23) is also the side wall (22a) of the housing (22) of the heat exchanger or the longitudinal side wall pair of the housing of the heat exchanger, which has an air gap in between.

15. A room-specific ventilation beam order (10) claimed in patent claim 13 or 14; known for the ventilation duct (7; 71 ) connected with the ventilation beam order, with which the contaminated air exiting from inside the ventilation beam can be removed further from the room.

16. A ventilation beam order (10) according to one of the 13 -15 patent claims; known for the ventilation duct (7; 72) connected with the ventilation beam, with which supply air can be moved from the room in which the ventilation beam is located to another room.