WO2024056808A1 - Échangeur de chaleur modulaire et appareil de ventilation - Google Patents

Échangeur de chaleur modulaire et appareil de ventilation Download PDF

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Publication number
WO2024056808A1
WO2024056808A1 PCT/EP2023/075312 EP2023075312W WO2024056808A1 WO 2024056808 A1 WO2024056808 A1 WO 2024056808A1 EP 2023075312 W EP2023075312 W EP 2023075312W WO 2024056808 A1 WO2024056808 A1 WO 2024056808A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
exchanger base
base body
modular
base bodies
Prior art date
Application number
PCT/EP2023/075312
Other languages
German (de)
English (en)
Inventor
Michael Merscher
Original Assignee
LUNOS Lüftungstechnik GmbH & Co. KG für Raumluftsysteme
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102023110555.8A external-priority patent/DE102023110555A1/de
Application filed by LUNOS Lüftungstechnik GmbH & Co. KG für Raumluftsysteme filed Critical LUNOS Lüftungstechnik GmbH & Co. KG für Raumluftsysteme
Publication of WO2024056808A1 publication Critical patent/WO2024056808A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
    • F28D17/02—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F2012/008—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air cyclic routing supply and exhaust air

Definitions

  • the invention relates to a modular heat exchanger and a ventilation device with such a modular heat exchanger.
  • Ceramic heat exchanger used The production of such ceramic heat exchangers is expensive and energy-consuming, and after their production it is difficult to adapt their length to the installation conditions.
  • the invention relates to a modular heat exchanger according to claim 1.
  • the modular heat exchanger comprises at least two heat exchangers.
  • Shear base body designed as a gas-solid heat exchanger, each with a large number of channels through which flow can flow, and at least one connecting element with which the heat exchanger base bodies can be connected to one another.
  • the invention includes the knowledge that by using several heat exchanger base bodies, which can be connected to one another via a connecting element and thus together form the heat exchanger, both the flexibility of the heat exchanger can be improved, since its structure now depends on the number and nature of the heat exchanger base body, as well as energy and cost efficiency can be increased by producing a large number of heat exchanger base bodies that are smaller than known heat exchangers.
  • the heat exchanger base bodies are connected to one another via the connecting element.
  • the modular structure of the heat exchanger makes it possible, for example, to easily adapt the length of the assembled heat exchanger to installation conditions by adding additional heat exchanger base bodies or by connecting and installing a smaller number of heat exchanger base bodies and thus adjusting the length of the heat exchanger.
  • the invention includes the knowledge that the modular structure allows further elements to be provided between the heat exchanger base bodies, through which the overall efficiency of the modular heat exchanger can be increased during operation.
  • the invention includes the knowledge that a modular structure of the heat exchanger allows different heat exchanger base bodies to be combined with one another and, for example, to increase the efficiency of the heat exchanger as a whole through clever air guidance, use of different materials or geometry adjustment.
  • the efficiency increases that can be achieved with the modular heat exchanger also enable the use of materials with a lower heat storage capacity than ceramics, such as polymer materials, as the material for the heat exchanger base body, which leads to significant energy savings in production and can also further reduce costs in terms of materials and the manufacturing processes that can be used. Examples of embodiments of the modular heat exchanger according to the invention are described below.
  • Each heat exchanger base body is preferably constructed in such a way that it extends further in at least one of its expansion directions than in the expansion direction in which it is flowed through in the assembled state, i.e. than its length. In other words, each heat exchanger base body is wider or higher or has a larger diameter than it is long.
  • the at least two heat exchanger base bodies are advantageously designed to be disk-shaped, so they each have a length that is smaller than their diameter.
  • the length of the assembled modular heat exchanger can be varied using such comparatively short heat exchanger base bodies.
  • Preferred lengths of the heat exchanger base bodies are in the range from 0.5 mm to 60 mm.
  • a preferred length is 30 mm.
  • the heat exchanger base bodies can preferably be designed both as sheets, in particular with a length of 1-2 mm, in other words with a thickness of 1-2 mm, and as thicker disks, in particular with lengths of 20-40 mm.
  • the at least two heat exchanger base bodies have a round or polygonal cross section.
  • the heat exchanger base bodies can also be designed as circle segments. These can then be assembled to form a heat exchanger with a round cross-section. Alternatively, several heat exchanger base bodies with a polygonal cross-section can be assembled to form a heat exchanger with a larger polygonal cross-section. In a further variant, a heat exchanger base body can also have a central recess in which another heat exchanger base body is arranged. In particular, one heat exchanger base body can be annular and another circular, wherein the annular heat exchanger base body can be designed to accommodate the circular heat exchanger base body in its hollow interior.
  • At least two heat exchanger base bodies are arranged in parallel so that flow can flow through them and thus form one level of the modular heat exchanger.
  • different heat exchanger base bodies can be used in parallel for different areas.
  • at least one heat exchanger base body is connected in series to at least one further heat exchanger base body in an assembled state.
  • such a level of the heat exchanger can have one or more heat exchanger base bodies, one or more forms another level, can be assembled to form a heat exchanger. This allows the length of the heat exchanger that can be flowed through to be adjusted.
  • At least one of the channels in at least one of the heat exchanger base bodies has a rectangular, hexagonal, polygonal, oval or round cross section. Examples of this can be seen in particular in FIG. 12 below.
  • at least one of the channels has a cross section that varies over a length of the heat exchanger base body.
  • at least one of the channels can be straight or winding.
  • a winding design allows an increase in the effective flow length through the channel and through the turns, preferably in the form of bends or spirals, increased impact of air molecules on the walls of the channel, which leads to improved heat transfer.
  • channels with different cross sections are arranged in at least one of the heat exchanger base bodies, in particular with cross sections that differ in terms of a basic shape and/or size.
  • the overall efficiency of the heat exchanger can be positively influenced by varying the channel cross sections in the heat exchanger base body.
  • the channel cross sections can be adapted to flow profiles on the respective use of the modular heat exchanger in order to optimize the heat transfer between the air guided through the heat exchanger base body and the heat exchanger base body.
  • At least one heat exchanger base body has a channel structure that varies regularly over its cross section, in particular channels with a larger diameter in an interior area and channels with a smaller diameter in the exterior area. This means that in the outdoor area, where there is usually more air flow when using axial fans, for example, larger areas of duct walls are available for heat transfer than in the inner area, where there is less air flow.
  • channels with a hexagonal cross-section are arranged in an interior region and channels with a square cross-section are arranged in an external region.
  • the wall surface for heat transfer is adapted to the flow.
  • individual channels can be filled in at least one of the heat exchanger base bodies. This makes sense, for example, in ducts that connect to dead zones of a fan used with the modular heat exchanger and that would therefore have poor flow or no flow at all anyway. By filling the channels, any small flows are diverted into other channels, which increases the possibility of heat transfer to or from the channel walls and can thus lead to improved efficiency.
  • heat exchanger base bodies through which flow occurs in series can also preferably be arranged in such a way that such closed channels in one heat exchanger base body are arranged offset from closed channels in the other heat exchanger base body and thus the heat transfer is further improved by increased deflection of the air flow.
  • the heat exchanger comprises at least one circular segment-shaped blocking body, which has no channels through which flow can pass and which can be connected to at least one of the heat exchanger base bodies via the at least one connecting element.
  • the blocking body preferably has a ceramic, a polymer material, in particular polystyrene or ABS, or a metallic material, in particular stainless steel.
  • At least one of the heat exchanger base bodies has a ceramic, a polymer material, in particular polystyrene or ABS (acrylonitrile-butadiene-styrene copolymer), or a metallic material, in particular stainless steel or aluminum.
  • a ceramic a polymer material, in particular polystyrene or ABS (acrylonitrile-butadiene-styrene copolymer), or a metallic material, in particular stainless steel or aluminum.
  • the connecting element can be made from the same material as the heat exchanger base body, but different materials can also be used Connecting element and heat exchanger base body are possible, for example the heat exchanger base body can be made of ceramic and the connecting element can be made of a polymer material.
  • At least one of the channels of at least one of the heat exchanger base bodies has an internal coating or internal structuring.
  • the inner coating is sand or a comparable granular material, which is in particular glued on and/or a metallic, ceramic or polymer coating and in particular has a different material than the heat exchanger base body. Using such a coating, the efficiency of the modular heat exchanger can be further improved by increasing the inner surface of the respective channel available for heat transfer or by using materials with higher thermal conductivity in the coating.
  • At least one of the heat exchanger base bodies and/or the at least one connecting element are preferably injection molded, extruded or produced using 3D printing. Milling, rolling or winding are also suitable manufacturing processes.
  • the connecting element is formed on at least one of the heat exchangers.
  • the connecting element can also be a separate component, in particular a connecting element arranged between the heat exchanger base bodies or a receptacle arranged around at least parts of the heat exchanger base bodies or a housing around the heat exchanger base bodies.
  • the connecting element can also be a rod, in particular a threaded rod, on which the heat exchanger base bodies are preferably attached at a distance from one another. The distance can be ensured by spacers between the heat exchanger base bodies or by positioning elements mounted on the connecting element, such as nuts in the case of threaded rods or stops.
  • the heat exchanger base body can also be connected to the connecting element via gluing, welding or other cohesive connection and the distances can be ensured in this way.
  • the at least one connecting element has at least two springs for engaging in a respective groove arranged on one of the heat exchanger base bodies.
  • several grooves can also be present on the heat exchanger base body in order to be able to vary the position of the heat exchanger base body.
  • Notches can also be used on the connecting element.
  • a thread or a threaded part into which the heat exchanger base body can be screwed can also be made on the connecting element.
  • the at least one connecting element seals tightly to the outside and in particular has sealing structures such as sealing lips. This means that an undesirable loss of flow to the outside can be avoided and sealing requirements for ventilation systems can be met.
  • the connecting element can also have thermal insulation.
  • thermal insulation can also be arranged around the entire modular heat exchanger to avoid unwanted heat losses.
  • an inflow plane of one heat exchanger base body is arranged at a distance of 1 - 10 mm from an outflow plane of the other heat exchanger base body, preferably in the range of 3 - 5 mm.
  • Such a distance between the heat exchanger base bodies leads to a turbulence of the air flow in the resulting gap and thus to a more uniform distribution of the air flow over the cross section of the heat exchanger base body when entering the heat exchanger base body than is the case if the heat exchanger base bodies connect directly to one another. This further improves the efficiency of the modular heat exchanger due to the more uniform flow.
  • the inflow and outflow planes are understood to mean the inlet and outlet planes of the channels of the heat exchanger base body through which flow can flow. Depending on the shape of the heat exchanger base body, these levels can also be convex or concave.
  • the inflow and outflow levels refer to a specific flow direction in which the heat exchanger base body flows through one after the other. Since modular heat exchangers according to the invention can be flowed through in two directions, the inflow and outflow levels cannot be distinguished based on design features, but rather relate to a specific flow direction. Thus, when the flow direction changes, an inflow plane becomes an outflow plane and vice versa.
  • the modular heat exchanger preferably comprises, in an assembled state, a spacer arranged between the at least two heat exchanger base bodies, the spacer being designed on at least one of the heat exchanger base bodies or as a separate spacer or as part of the connecting element.
  • a predetermined distance can be maintained using such a spacer.
  • Possible embodiments include, for example, stops for the heat exchanger base body on the connecting element or edges or elements protruding above the inflow or outflow plane of at least one of the heat exchanger base bodies. These elements can, for example, be wall elevations of the walls of certain channels.
  • the spacer can be designed and/or arranged to fluidly separate a first set of channels of a heat exchanger base body from a second set of channels of this heat exchanger base body in the assembled state. This means that air flows can be conducted fluidly separately from one another, but also partial areas of the heat exchanger base body can be decoupled from the air flow and, for example, electrical lines can be guided in the channels of these partial areas or these channels cannot be used in some embodiments.
  • At least one of the heat exchanger base bodies is curved, in particular concave, on at least one side. Due to a concave shape of the heat exchanger base body, a distance between two heat exchanger base bodies is greater in an indoor area than in the outdoor area. In addition, an advantageous distance can also be achieved, as explained above, in which the flow swirls and thus the heat exchanger base body is flowed more evenly over its cross section.
  • the at least one connecting element and/or the spacer has a partition wall via which two air streams can be completely fluidly separated from one another, in particular the partition wall being a straight wall or a closed ring.
  • This embodiment also allows the use of the modular heat exchanger in applications in which two air flows are fluidically separated from one another in a housing.
  • a partition can also be provided as a separate element, for example provided with seals in the modular heat exchanger, or as an integral part of one or more of the heat exchanger base bodies. be realized by.
  • Such a partition can also separate two areas of the heat exchanger base body from each other, only one of which is flowed through during operation, while the other can be used to feed through cables or the like.
  • a porous material is arranged in an assembled state between the at least two heat exchanger base bodies, the porous material being in particular a cotton wool, a fleece, a foam material. It is particularly advantageous if the porous material has a web structure that is thin compared to passages in the porous material.
  • Foam materials used are preferably foam materials with a pore quantity in the range of ppi 10 -30, more preferably ppi 10 - 20.
  • the porous material between the heat exchanger base bodies ensures further deflections or refraction of the air flow, which in turn leads to increased heat transfer in the subsequent continuous channels and thus contributing to improved efficiency.
  • the at least two heat exchanger base bodies are constructed differently, in particular they have different lengths, different channel structures and/or different materials. With these embodiments, the efficiency of the modular heat exchanger can be further increased, since the heat exchanger base body can be individually adapted to the flow conditions in the application.
  • the channel structures preferably differ in diameter, wall thickness and/or cross-sectional shape of the channels. Different areas can also be completely closed.
  • heat exchanger base bodies of a heat exchanger can have the same structure. This allows manufacturing costs to be reduced.
  • the at least two heat exchanger base bodies are arranged twisted relative to one another in an assembled state. This ensures that the flow cannot pass directly from a channel of a heat exchanger base body into a channel of the next heat exchanger base body, at least not at all points in the cross section of the heat exchanger base body. This leads to a redirection of the flow and increases the chance that air molecules in the channel of the next heat exchanger base body come into contact with the channel walls. This promotes heat transfer and increases the efficiency of the modular heat exchanger.
  • Two successive heat exchanger base bodies are preferably arranged twisted relative to one another at an angle of 30° or 60°.
  • the at least two heat exchanger base bodies can also be arranged in alignment with one another, so that an air flow can flow through the channels unhindered. This means that a higher volume flow or a lower pressure build-up can be achieved than with heat exchanger base bodies that are twisted relative to one another and thus offset flow paths.
  • the modular heat exchanger comprises at least three heat exchanger base bodies, wherein a first and a second heat exchanger base body have a different rotation angle to one another than the second heat exchanger base body and a third heat exchanger base body. This forces further redirection of the flow, at least in some channels, thus further increasing efficiency.
  • the invention relates to a ventilation device with at least one fan that can be operated in particular bidirectionally and at least one modular heat exchanger according to the first aspect of the invention.
  • the efficiency of the ventilation device as a whole can be increased, so more heat can be stored in one cycle and released in the next.
  • a flow equalizer made of porous material is arranged between the bidirectionally operable fan and the modular heat exchanger, on whose webs air molecules are deflected in such a way that dead zones that arise behind the fan are compensated for.
  • the invention relates to a double ventilation device for interior ventilation, having in a common housing a first air guidance device for guiding a first air flow, which has a first interior-side outlet, a first flow space in which at least a first bidirectionally operable fan is arranged, and has a first outside outlet, a second air guiding device which is fluidically completely separated from the first air guiding device and for guiding a second air flow, which has a second interior side outlet, a second flow space in which at least one second bidirectionally operable fan is arranged, and a second outside outlet, a modular heat exchanger according to the first aspect of the invention, which extends in the first and in the second air ducting device, is arranged in both air ducting devices between the respective interior-side and the outside-side outlet, and is designed to fluidly separate the first air flow and the second air flow,
  • the modular heat exchanger in the first and the second air ducting device each additionally forming a regenerator, the first
  • Embodiments in which a partition for fluidly separating the first and second air flows in the modular heat exchanger is present are particularly suitable for this. But alternative implementations of air flow separation such as sealing elements are also possible.
  • 1 a three-dimensional representation of a heat exchanger base body of an embodiment of a modular heat exchanger according to the invention
  • 2 a front view and an exploded view of an embodiment of a modular heat exchanger with three heat exchanger base bodies
  • Fig. 7 a three-dimensional representation of heat exchanger base bodies of a further embodiment of a modular heat exchanger according to the invention.
  • Fig. 8A a front view of a further embodiment of a heat exchanger according to the invention
  • Fig. 8B a three-dimensional representation of the embodiment of a heat exchanger according to the invention from Fig. 8A
  • Fig. 9A a front view of a further embodiment of a heat exchanger according to the invention
  • Fig. 9B a three-dimensional representation of the embodiment of a heat exchanger according to the invention from Fig. 9A
  • Fig. 10A a front view of a further embodiment of a heat exchanger according to the invention
  • Fig. 10B a three-dimensional representation of the embodiment of a heat exchanger according to the invention from Fig. 10A
  • Fig. 11A a front view of a further embodiment of a heat exchanger according to the invention
  • Fig. 11B a three-dimensional representation of the embodiment of a heat exchanger according to the invention from Fig. 11A
  • Fig. 12 different cross-sectional shapes for channels of a heat exchanger according to the invention
  • Fig. 1 shows a three-dimensional representation of a heat exchanger base body 100 of an embodiment of a modular heat exchanger according to the invention.
  • the heat exchanger base body is designed as a gas-solid heat exchanger with a large number of flow-through channels 120.
  • Four connecting elements 110 are arranged on the heat exchanger base body 100.
  • the connecting elements 110 are designed as springs which can engage in grooves, for example, in a heat exchanger base body 100 of the same design.
  • the heat exchanger base body 100 has a plurality of grooves 130, which makes it possible to rotate the heat exchanger base bodies of the same structure relative to one another when assembling the modular heat exchanger. This is explained in more detail with reference to FIGS. 2 to 4.
  • the heat exchanger base body comprises a spacer 140, which is designed here as a circumferential edge that protrudes above the inflow plane of the channels through which flow can flow and thus of the heat exchanger base body.
  • the spacer 140 on which the connecting elements 110 are formed in the form of springs, ensures that in an assembled state of the modular heat exchanger, an inflow plane of the heat exchanger base body is spaced from an outflow plane of an adjacent heat exchanger base body, here the distance is 3 - 5 mm.
  • the flow-through channels 120 of the heat exchanger base body 100 have rectangular cross sections, with the exception of the outermost channels, which end on a wall of the round heat exchanger base body.
  • the flow-through channels 120 shown here have a uniform cross section over a length of the heat exchanger base body and are also constructed the same over the cross section of the heat exchanger base body.
  • the cross sections of the channels through which flow can vary both over the length of the heat exchanger base body and over the cross section of the heat exchanger base body.
  • the heat exchanger base body can be made of ceramic, but also of polymer materials, in particular due to the efficiency-increasing measures such as distance and deflection in a twisted arrangement. Polystyrene or ABS (acrylonitrile-butadiene-styrene copolymer) are particularly preferred here.
  • Fig. 2 shows a front view and an exploded view of an embodiment of a modular heat exchanger 1000 with three identically constructed heat exchanger base bodies 200, 201, 202.
  • the heat exchanger base bodies 200, 201, 202 are constructed similarly to the heat exchanger base body shown in Fig. 1. In this respect, the following will primarily focus on the differences and additional aspects. Only the grooves 230, 231, 232 are designed here as grooves extending over the entire length of the respective heat exchanger base body. When assembled, corresponding connecting elements designed as springs 210, 211, 212 engage in these grooves.
  • the central heat exchanger base body 201 is arranged rotated by 30° relative to the heat exchanger base bodies 200 and 202.
  • the twisted arrangement is advantageous because it deflects at least parts of an air flow passed through the modular heat exchanger 1000 during the transition from one heat exchanger base body to the next, since the heat exchanger cannot flow completely straight.
  • the deflection increases the probability that air molecules will come into contact with the channel walls in the channel of the next heat exchanger base body. This results in increased heat transfer and the efficiency of the heat exchanger is increased compared to heat exchangers without deflection.
  • the deflection of some of the continuous channels can be clearly seen in the front view.
  • the continuous channel 221b of the middle heat exchanger 201 is arranged by the twist so that it has several channels 220 of the first heat exchanger 200 overlaps and a web cross of the first heat exchanger 200 is located almost centrally in front of the continuous channel 221 b.
  • the continuous channel 221a can be flowed through almost completely straight. As a rule, less heat transfer takes place in this channel 221a than in the channel
  • the deflection also promotes turbulence of the air flow in the spaces created by the spacers 240 between an outflow plane of the channels of one heat exchanger base body and an inflow plane of the heat exchanger base body following it in the flow direction. This also contributes to an increase in contact between the air molecules and the channel walls in the following heat exchanger base body and thus to an increase in efficiency.
  • the front view also shows how the springs 211 engage in grooves 230 and thus connect the heat exchanger base bodies to one another.
  • Fig. 3 shows a front view and an exploded view of a further embodiment of a modular heat exchanger 1001 with three heat exchanger base bodies 200, 201, 202.
  • the heat exchanger base bodies 200, 201, 202 correspond in structure to those shown in Fig. 2.
  • Heat exchanger base body 200 is now also arranged twisted compared to heat exchanger base body 202.
  • all heat exchanger base bodies are arranged twisted relative to one another, here each at 30° to the adjacent heat exchanger base body.
  • Fig. 4 also shows a front view and an exploded view of a further embodiment of a modular heat exchanger 1001 with six heat exchanger base bodies 200, 201, 202, 203, 204, 205.
  • the heat exchanger base bodies 200, 201, 202, 203, 204, 205 also correspond in structure shown in Fig. 2.
  • the heat exchanger 1002 is longer overall, so there are more options for heat transfer over the length, on the other hand every second heat exchanger base body is rotated by 60 ° to the adjacent heat exchanger base body, which results in:
  • Each heat exchanger base body is redirected to the next heat exchanger base body for large portions of the flow and thus increased efficiency
  • FIG. 5 shows a sectional view of an embodiment of a ventilation device 2000 according to the second aspect of the invention.
  • the ventilation device 2000 has a fan 500 that can be operated bidirectionally and a modular heat exchanger 1004 with three heat exchanger base bodies 300, 301, 302. In the embodiment shown, these are arranged in a common housing 600.
  • the common housing can be a ventilation pipe, but it can also include thermal insulation, for example.
  • the bidirectionally operable fan 500 is arranged at a distance from the modular heat exchanger 1004. There is therefore a gap 510 between the fan 500 and the modular heat exchanger 1004.
  • a flow equalizer made of porous material, on the webs of which air molecules are deflected in such a way that dead zones that arise behind the fan are compensated for and the modular heat exchanger 1004 flows evenly the flow flows across its entire cross section.
  • a first heat exchanger base body can also be used adjacent to the fan 500, which is solidly designed in areas that would otherwise have poor flow or no flow at all due to a dead zone, so that any air flows are redirected into other channels.
  • the three heat exchanger base bodies 300, 301, 302 are constructed differently in the embodiment shown.
  • the middle heat exchanger base body 301 here has continuous channels with a hexagonal cross section and smaller wall thicknesses than those of the channels of the heat exchanger base bodies 300 and 302.
  • the heat exchanger base bodies 300 and 302 have continuous channels with square cross sections and are arranged rotated by 60° relative to one another.
  • the inflow plane of each heat exchanger base body is arranged at a distance from the outflow plane of the heat exchanger through which it previously flowed, here at a distance of 5 mm.
  • a porous material can be arranged in the spaces 341, 342 between the heat exchanger base bodies 300 and 301 and 301 and 302, the porous material in particular being a Cotton wool, a fleece, a foam material. It is particularly advantageous if the porous material has a web structure that is thin compared to passages in the material.
  • Foam materials used are preferably foam materials with a pore quantity in the range of ppi 10 -30, more preferably ppi 10 - 20. The use of such porous material in the gaps increases the efficiency of the modular heat exchanger and thus also of the ventilation device.
  • the heat exchanger base bodies 300, 301, 302 are arranged in a housing 400, which serves as a connecting element and spacer.
  • the housing 400 also has thermal insulation and thus avoids unwanted heat losses to the outside.
  • FIG. 6 shows a three-dimensional representation of several heat exchanger base bodies 700, 701, 702, 703, 704 of an embodiment of a modular heat exchanger according to the invention.
  • the heat exchanger base bodies 700, 701, 702, 703, 704 shown form a plane of the heat exchanger and are flowed through in parallel during operation.
  • the heat exchanger base bodies are designed as gas-solid heat exchangers with a large number of channels 720 through which flow can flow.
  • a connecting element 710 is arranged on the heat exchanger base body 700.
  • the connecting element 710 is designed as a hook, which can, for example, engage in a suitable recess 71 1 of an identically constructed heat exchanger base body.
  • the flow-through channels 720 of the heat exchanger base body 700 have rectangular cross sections, with the exception of the outermost channels, which connect to a partition 707 of the heat exchanger base body 700.
  • the flow-through channels 720 shown here have a uniform cross section over a length of the heat exchanger base body.
  • the partition 707 here separates an area 706 of the heat exchanger base body, through which air flows through channels 720 during operation, from an area 705 through which cables can be guided, for example.
  • the channels 721 are designed with larger cross sections compared to area 706 in order to achieve easy cable routing.
  • the partition 707 ensures that during operation air only flows through the heat exchanger base body in the area 706
  • the heat exchanger base bodies 701, 702, 703, 704 are each constructed in the form of a circle segment corresponding to the heat exchanger base body 700 and can be connected to this can be assembled to form a plane of a heat exchanger, which as a result has a round external cross section after assembly. Such a level of the heat exchanger can then be assembled into the heat exchanger with one or more heat exchanger base bodies, which form another level.
  • Fig. 7 shows a three-dimensional representation of two heat exchanger base bodies 800, 801 of an embodiment of a modular heat exchanger according to the invention.
  • the heat exchanger base bodies 800, 801 shown in the embodiment shown form a plane of the heat exchanger and are flowed through in parallel during operation.
  • the heat exchanger base bodies 800, 801 are constructed in the form of semicircular segments.
  • the heat exchanger base body is designed as a gas-solid heat exchanger with a large number of channels 820 through which flow can flow.
  • Several connecting elements 810 in the form of hooks are arranged on the heat exchanger base body 800.
  • the flow-through channels 820 of the heat exchanger base body 800 have rectangular cross sections, with the exception of the outermost channels, which connect to a partition 807 of the heat exchanger base body 800.
  • the partition 807 separates an area 806 of the heat exchanger base body, through which air flows through channels 820 during operation, from an area 805 through which, for example, cables can be guided.
  • the channels 821 are designed with larger cross sections compared to the flow-through channels in area 806 in order to achieve easy cable routing.
  • the partition 807 ensures that air only flows through the heat exchanger base body in the area 806 during operation.
  • the partition can also separate two areas from each other through which flow flows in different directions.
  • Fig. 8A shows a front view
  • Fig. 8B shows a three-dimensional representation of an embodiment of a modular heat exchanger 900 according to the invention.
  • the heat exchanger base bodies 901, 902, 903, 904 are designed as gas-solid heat exchangers with a plurality of channels 950 through which flow can flow.
  • the channels 950 point here all round cross sections.
  • the heat exchanger base bodies 901, 902, 903, 904 are made here from metallic sheets and can be connected to one another via a connecting element, not shown here, in the form of a centrally arranged rod.
  • a connecting element not shown here, in the form of a centrally arranged rod.
  • the heat exchanger base bodies 901, 902, 903, 904 are arranged in alignment with one another, so that all channels 950 are complete in the front view are uncovered and the air flow can flow unhindered. This means that a higher volume flow or a lower pressure build-up can be achieved than with heat exchanger base bodies that are twisted relative to one another and thus offset flow paths.
  • FIGS. 8A and 8B show a heat exchanger 910, the heat exchanger base bodies 911, 912, 913, 914 of which are constructed in the same way as those of the heat exchanger 900 of FIGS. 8A and 8B.
  • the heat exchanger base bodies are each arranged twisted relative to one another, so that the channels 950 only partially overlap and the flow of pleasure is redirected. This leads to a higher efficiency of the heat exchange, but with slight losses in volume flow or higher pressure than is the case with aligned channels.
  • FIGS. 10A and 10B show a heat exchanger 920 with four heat exchanger base bodies 921, 922, 923, 924, each of which has a large number of rectangular channels 960 through which flow can flow.
  • the channels are arranged in alignment with one another.
  • a housing with receptacles for the heat exchanger base body, for example, can serve as a connecting element (not shown here).
  • the heat exchanger base bodies can be inserted into these receptacles and thus arranged at a distance from one another.
  • FIGS. 10A and 10B show a heat exchanger 930, the heat exchanger base bodies 931, 932, 933, 934 of which are constructed in the same way as those of the heat exchanger 920 of FIGS. 10A and 10B.
  • the heat exchanger base bodies are each arranged twisted relative to one another, so that the channels 960 only partially overlap and the flow of pleasure is redirected. This leads to a higher efficiency of the heat exchange, but with slight losses in volume flow or higher pressure than is the case with aligned channels.
  • Fig. 12 shows an example of a large number of possible cross sections for the flow-through channels of a heat exchanger according to the invention. reference symbol

Abstract

L'invention concerne un échangeur de chaleur modulaire comprenant au moins deux corps de base d'échangeur de chaleur conçus sous la forme d'échangeurs de chaleur à corps solide et à gaz comportant chacun une pluralité de canaux pouvant être parcourus, ainsi qu'au moins un élément de liaison au moyen duquel les corps de base d'échangeur de chaleur peuvent être reliés l'un à l'autre.
PCT/EP2023/075312 2022-09-14 2023-09-14 Échangeur de chaleur modulaire et appareil de ventilation WO2024056808A1 (fr)

Applications Claiming Priority (4)

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DE102022123427.4 2022-09-14
DE102022123427 2022-09-14
DE102023110555.8 2023-04-25
DE102023110555.8A DE102023110555A1 (de) 2022-09-14 2023-04-25 Modularer Wärmetauscher und Lüftungsgerät

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WO2024056808A1 true WO2024056808A1 (fr) 2024-03-21

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011080358A1 (de) 2011-08-03 2013-02-07 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Einbauprofil
DE202014003368U1 (de) * 2014-01-14 2014-07-23 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Lüftungsgerät zur Innenraumbelüftung in Gebäuden
DE102014200538A1 (de) 2014-01-14 2015-07-16 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Lüftungsgerät zur Innenraumbelüftung in Gebäuden
DE102015103594B3 (de) * 2015-03-11 2016-03-31 Hoval Aktiengesellschaft Lüftungsgerät und Verfahren zur dezentralen Raumlüftung
DE102017117571A1 (de) * 2017-05-12 2018-11-15 Aereco GmbH Wärmespeicher und raumtechnische Lüftungsvorrichtung mit einem Wärmespeicher
WO2018233775A1 (fr) * 2017-06-23 2018-12-27 Oliver Schmitz Élément de stockage de chaleur pour des dispositifs de ventilation de pièces décentralisés comportant des ventilateurs axiaux, dispositif de stockage de chaleur et dispositif de ventilation de pièce décentralisé

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011080358A1 (de) 2011-08-03 2013-02-07 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Einbauprofil
DE202014003368U1 (de) * 2014-01-14 2014-07-23 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Lüftungsgerät zur Innenraumbelüftung in Gebäuden
DE102014200538A1 (de) 2014-01-14 2015-07-16 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Lüftungsgerät zur Innenraumbelüftung in Gebäuden
DE102015103594B3 (de) * 2015-03-11 2016-03-31 Hoval Aktiengesellschaft Lüftungsgerät und Verfahren zur dezentralen Raumlüftung
DE102017117571A1 (de) * 2017-05-12 2018-11-15 Aereco GmbH Wärmespeicher und raumtechnische Lüftungsvorrichtung mit einem Wärmespeicher
WO2018233775A1 (fr) * 2017-06-23 2018-12-27 Oliver Schmitz Élément de stockage de chaleur pour des dispositifs de ventilation de pièces décentralisés comportant des ventilateurs axiaux, dispositif de stockage de chaleur et dispositif de ventilation de pièce décentralisé

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