WO2023169927A1 - Conduit de guidage d'air - Google Patents

Conduit de guidage d'air Download PDF

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Publication number
WO2023169927A1
WO2023169927A1 PCT/EP2023/055341 EP2023055341W WO2023169927A1 WO 2023169927 A1 WO2023169927 A1 WO 2023169927A1 EP 2023055341 W EP2023055341 W EP 2023055341W WO 2023169927 A1 WO2023169927 A1 WO 2023169927A1
Authority
WO
WIPO (PCT)
Prior art keywords
air guiding
guiding duct
connection region
region
heat exchanger
Prior art date
Application number
PCT/EP2023/055341
Other languages
English (en)
Inventor
Florian ANTOINE
Olivier SIEGEL
Francois Crouzet
Paul FERTIN
Original Assignee
Bdr Thermea Group B.V.
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 EP22161653.5A external-priority patent/EP4242536A1/fr
Priority claimed from EP22182713.2A external-priority patent/EP4303498A1/fr
Priority claimed from EP22201679.2A external-priority patent/EP4354066A1/fr
Application filed by Bdr Thermea Group B.V. filed Critical Bdr Thermea Group B.V.
Publication of WO2023169927A1 publication Critical patent/WO2023169927A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/06—Air heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/029—Duct comprising an opening for inspection, e.g. manhole
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
    • F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag

Definitions

  • Air guiding duct for a heating device, in particular for a heat pump, and to a heating device comprising said air guiding duct. Also, the invention relates to a use of said air guiding duct in a heating device, in particular a heat pump device.
  • a heating device like a heat pump is a device able to transfer calories from a source medium to a destination fluid. This is obtained using a refrigeration cycle carried out in the opposite direction of the heat transfer.
  • the most widely used is the vapor compression refrigeration, in which a refrigerant undergoes phase changes.
  • the heat pumps are usually customized to ensure thermal comfort of the houses where they are located.
  • Document EP2354709 discloses an air/water heat pump for external assembly using a closed channel between the heat exchanger and the fan made of plastic foam parts. These parts are relatively light and allow the realization of shapes allowing the improvement of the air guidance and thus the improvement of the acoustical performances.
  • the surface condition of the closed channel mainly made of plastic foams, is rough and generates disturbances of the air flow on the walls of the air duct. These disturbances distort the laminar air flow (straight air flow) into a turbulent air flow, thereby creating small rollers. These surface disturbances are then transmitted to the entire air flow.
  • the air duct as described in this prior art document is made with a limited number of parts having a limited number of functions. Therefore, in order to increase the functionalities of the device, additional structural parts/elements are necessary. However, this tends to significantly increase the volume and weight of each part. This tendency is not satisfactory in terms of ergonomics of use as well as of reduction of the weight of the parts and does not facilitate the maintenance of the various components. It is therefore desirable to obtain a system for managing the air flow able to improve the heat pump’s performance in terms of both the thermal and acoustic performance. In particular, it is desirable to obtain an efficient system for guiding air from the evaporator to the fan element that ensures high flow rate and at the same time limits flow disturbances compared to prior art.
  • an air guiding duct for a heating device in particular for a heat pump, the heating device having a heat exchanger and at least a fan element arranged in an internal space of the heating device, the air guiding duct having a connection region for receiving at least a portion of the heat exchanger in an inlet region and for receiving at least a portion of the fan element in an outlet region, wherein at least a portion of the connection region has a surface roughness lower than 250 ⁇ m, in particular lower than 100 ⁇ m.
  • the value of the surface roughness of the connection region of the present air guiding duct allows to guide the air flow in a soft way, thereby limiting the frictions creating surface disturbances in the air flow.
  • This solution makes it possible to reach high air flow speeds and therefore high heating powers while obtaining satisfactory acoustic performances.
  • Surface roughness is usually quantified by the deviations in the direction of the normal vector of a real surface from its ideal form. If these deviations are large, the surface is rough; if they are small, the surface is smooth.
  • the roughness value defined throughout the present application is the (one-dimensional) profile roughness parameter Ra that is defined as the arithmetic average value of filtered roughness profile determined from deviations about the center line within the evaluation length.
  • this profile roughness parameter is included in the ISO 4287:1997 standard that is based on the ′′M′′ (mean line) system.
  • the expression “at least a portion of the connection region has a surface roughness lower than 250 ⁇ m, in particular lower than 100 ⁇ m” it is intended that only a part of the connection region can be configured to have such a surface roughness value, for example only the portion in contact with the air flow, i.e. the internal surface of the connection region.
  • the connection region is used to guide the air between the heat exchanger and the fan.
  • the expression is also intended that the entire connection region can be provided with such surface roughness value.
  • connection region is at least partly made of at least one of metal, polymer, or fiber material, wherein in particular the connection region is made of at least one of steel, injected, thermoformed plastic, extruded plastic, thermoformed textile fiber, or thermosets, with or without reinforced fibers.
  • the thermoformed textile fiber can be natural or synthetic, non-woven or woven.
  • the thermosets can be PUR/EP/SMC/BMC/silicon, with or without reinforced (natural or synthetic) fibers.
  • connection region can be covered with at least one of metal, polymer, or fiber material wherein the covered part of the connection region can be of another material.
  • the total connection region can be made of at least one of metal, polymer, or fiber material.
  • the parts of the present air guiding duct are lighter because they are much thinner than plastic foam parts.
  • the average thickness of the identified parts for the air duct is between 1 mm and 3 mm while the plastic foam parts require a thickness of at least 15 mm in order to have a sufficient mechanical resistance. Since the parts of the present air guiding duct have a reduced weight, it is easily possible to duplicate the construction to create units with several fans and several air ducts. Therefore, the same parts can be reused several times for the same product.
  • the recycling channels for hard plastics and steel are largely developed compared to the recycling channels for plastic foams. This improves the ecological footprint of the product.
  • connection region at least partially covers a surrounding area of the heat exchanger and/or a periphery of the blades of the fan element.
  • the air guiding duct represents a continuous surface, i.e. a closed air duct, between the air/refrigerant heat exchanger and the fan of an air source heat pump.
  • the inlet region can have an inlet cross-section corresponding at least partially to the cross-section of the heat exchanger and the outlet region can have an outlet cross-section corresponding at least partially to the cross-section of the fan element.
  • the surface of the connection region between the inlet region and the outlet region is devoid of acute angles.
  • the profile of the air guiding duct between the fan element up to the heat exchanger has only curved and smooth shapes without angular shapes.
  • the cross section of the air flow in the direction from the heat exchanger to the fan element, the cross section of the air flow first decreases and then increases. In this way, a homogeneous air flow is provided within the air guiding duct.
  • the air guiding duct and specifically the connection region can comprise a plurality of successive sections of similar or different size. Also, since the connection region is made with soft shapes, there is no step greater than a maximum value between two successive sections, in the direction of the air flow between the heat exchanger and the fan element.
  • the air guiding duct comprises at least one inspection opening for allowing an access between the heat exchanger and the fan element, wherein in particular the inspection opening is at least 50 mm x 50 mm in size to allow for visual analysis as well as to allow a cleaning tool to be inserted.
  • the inspection opening can have different dimensions and shapes that are suitable for the above mentioned purpose.
  • the inspection opening is located in the upper region of the air guiding duct. However, it can also be located in other regions of the duct, such as lateral regions or the bottom region.
  • the air guiding duct can also be provided with a plurality of such inspection openings.
  • the air guiding duct comprises at least one hatch coupled to the inspection opening to cover said inspection opening.
  • the hatch can have the same dimensions and shape of the inspection opening or can be different in dimension and size provided that it is configured to cover the inspection opening.
  • the hatch can be fixable in a removable way to the air guiding duct.
  • the air guiding duct can comprise a plurality of hatches each coupable to a corresponding inspection opening.
  • the inspection opening is present in a portion of the connection region. In this way, the connection region represents a closed air duct only when the hatch covers the inspection opening.
  • the inspection opening is located in the upper part of the connection region. However, it can also be located in other parts of the connection region, such as lateral parts or the bottom part.
  • the surface of the connection region between the inlet region and the outlet region is a sloped surface having an average slope of less than 45°, preferably less than 35°, with respect to a central axis of the fan element. In this way, the air guiding duct comprises a gentle slope profile, thereby avoiding air flow turbulences.
  • the inlet region of the connection region has a polygonal cross-section, in particular a rectangular cross section.
  • the inlet region can fit the shape of a standard heat exchanger.
  • the inlet region of the connection region can have a different shape, for example curved.
  • the outlet region of the connection region has a circular cross section. In this way the outlet region can fit the shape of a standard fan element.
  • the outlet region of the connection region can have a different shape, for example curved or polygonal.
  • the connection region comprises one inlet region and a plurality of outlet regions, wherein the surface dimensions of the inlet region is greater than the surface dimensions of the plurality of outlet regions.
  • Each outlet region can advantageously be coupled to a fan element in order to take into account configurations of heat pumps having one heat exchanger and a plurality of fan elements.
  • several heat exchangers can be provided wherein the heat exchangers are connected to the same refrigerant circuit.
  • the heat exchangers can be fluidically connected in a serial or parallel way to each other.
  • a heating device in particular a heat pump device, is provided, the heating device comprising the inventive air guiding duct, wherein the air guiding duct is placed in an internal space of the device between a heat exchanger and the fan element of the heating device.
  • the heating device comprises one or more structural parts enclosing at least the connection region and/or holding the air guiding duct.
  • These structural parts can be used to hold the air guiding duct, the heat exchanger, the fan element, but can also be used for other purposes.
  • the air guiding duct as well as the fan element and the heat exchanger can be maintained in a set of structural parts. These parts can be largely openwork and are not subject to roughness or shape constraints as they do not play the role of an air guiding duct.
  • At least one structural part is made of a material different from the material of the connection region, in particular is made of plastic foam, more particularly of polypropylene expanded (PPE).
  • the one or more structural parts form a recess at the inlet region of the connection region. In this way, these structural parts are easy to mount and do not hinder the correct functioning of the heat exchanger.
  • the one or more structural parts comprise a condensate collecting region (i.e. condensate tray), and/or a support surface for casing or electronic elements. In this way, the structural parts can be used for multiple purposes.
  • At least one structural part comprises an accessing opening and in particular a hatch coupled to said accessing opening.
  • the accessing opening should be located at the inspection opening, for example in the connection region, so that an access to the internal parts of the connection region, i.e. to the fan element and/or the heat exchanger, can be possible also in presence of the structural part.
  • a corresponding hatch coupled to the accessing opening is not essential when an hatch is already present at the inspection opening.
  • the accessing opening can have the same or different dimension and/or size compared to the inspection opening present in the connection region.
  • a use of the inventive air guiding duct is provided.
  • the inventive air guiding duct is used in a heating device, in particular a heat pump device.
  • the present air guiding duct and system and apparatus comprising said duct improves both the acoustic and energy performance of the product compared to the existing ones. Accordingly, it allows the integration of the heat pump technology in a larger number of use cases and thus democratizes the use of renewable energy.
  • the present air guiding duct can be used for mono-block or spilt units, and for devices producing cold or heat.
  • the present air guiding duct can be suitable for transfer heat/cold to air (air conditioner) or water (boiler) or other fluid, and more specifically for air source heat pump devices.
  • air air conditioner
  • water water
  • the subject-matter of the invention is schematically shown, wherein identical or similarly acting elements are usually provided with the same reference signs.
  • Figure 1 shows a schematic representation of the air guiding duct according to an example.
  • Figures 2A-B show two perspective views of the duct together with a fan element and heat exchanger in a disassembled configuration according to an example without structural parts.
  • Figures 3A-B show two perspective views of the duct together with a fan element and heat exchanger in a disassembled configuration according to another example with structural parts.
  • Figures 4A-D show perspective views of the duct together with a fan element and heat exchanger in an assembled configuration according to two examples, i.e. without and with structural parts.
  • Figure 5 shows a lateral cross-section view of the air guiding duct assembled with a fan element and the heat exchanger according to an example.
  • Figure 6 shows a lateral view of the air guiding duct assembled with two fan elements and the heat exchanger according to an example.
  • Figure 1 illustrates the duct 1 for guiding the air flow in a schematic representation.
  • the duct 1 can be coupled to a heating device 2, for example a heat pump water heater.
  • the heating device 2 comprises at least a heat exchanger such as an evaporator 3 for absorbing heat and producing a fluid in a gas/vapor form at a lower temperature and low pressure and a fan element 4.
  • a heat exchanger such as an evaporator 3 for absorbing heat and producing a fluid in a gas/vapor form at a lower temperature and low pressure
  • a fan element 4 In the figure, one fan element 4 is represented. However, the duct 1 can be suitable for any number of fan elements 4 coupled to the evaporator 3. The evaporator 3 is crossed by an air circulating path (arrows in the figure). The air is conducted from the evaporator 3 to the fan element 4 and then outside the heating device 2.
  • the heating device 2 is a heat pump, and the evaporator 3 and the fan element 4 are arranged in an internal space 5 of the device 2 defined at least in part by an external casing 15.
  • the external casing 15 can be formed of metallic parts.
  • the air guiding duct 1 has a connection region 6 for receiving a portion of the heat exchanger 3 in an inlet region 7 and for receiving a portion of the fan element 4 in an outlet region 8. In this way, a closed duct is formed between the heat exchanger 3 and the fan element 4.
  • the connection region 6 comprises an inlet region 7 for the inlet of the air flow and an outlet region 8, opposite to the inlet region 7, for the outlet of the air flow.
  • the connection region 6 is made of a material having a low surface roughness, for example Ra lower than 250 ⁇ m and preferably lower than 100 ⁇ m.
  • the connection region 6 is completely made of at least one of steel, injected, thermoformed plastic, extruded plastic, thermoformed textile fiber, or thermosets.
  • connection region 6 is reduced in weight and thickness and has a smoother surface. This improves both the acoustic and energy performance of the heating device.
  • an inspection opening 9 is provided for allowing access between the evaporator 3 and the fan 4 from outside.
  • a suitable hatch 10 can be coupled to the inspection opening 9 to cover and close it when the access inside the air guiding duct 1 is no more necessary. The coupling between the hatch 10 and the inspection opening 9 is such to ensure that the air guiding duct 1 represents a closed channel when the hatch 10 closes the opening 9.
  • FIGs 2A and 2B illustrate a perspective view (Fig.2A) and a lateral view (Fig.2B) of the air conduction duct 1 combined with the fan element 4 and the heat exchanger 3.
  • the air conduction duct 1 basically comprises a single main body, i.e. the connection region 6, coupled to the hatch 10 that serves to cover and close the inspection opening 9.
  • the connection region 6 has a tapered shape to be placed between the heat exchanger 3 and the fan element 4.
  • connection region 6 is to guide the air flow from the heat exchanger 3 to the blades 16 of the fan element 4 towards outside the device 2.
  • the connection region has a rectangular cross-section at the inlet region 7 in order to receive a portion of the heat exchanger 3 and a circular cross-section at the outlet region 8 to receive a portion of the fan element 4, wherein the dimension of the inlet region 7 is greater that the dimension of the outlet region 8.
  • the connection region 6 comprises an upper edge 17 at the inlet region 7 that fits together the upper surface of the heat exchanger 3 to facilitate the contact and eventually the fixing with the heat exchanger 3.
  • connection region 6 comprises a circular rim 18 at the outlet region 8 that advantageously fits together with the circular profile of the fan element 4.
  • Figures 3A and 3B illustrate a perspective view (Fig.3A) and a lateral view (Fig.3B) of the air conduction duct 1 combined with the fan element 4 and the heat exchanger 3 and structural parts 12 of the heating device 2. Differently from the duct 1 of figures 2A and 2B, these figures additionally show structural parts 12.
  • the structural parts 12 serve to support and protect the connection region 6, the fan element 4 and the heat exchanger 3 and envelope at least the connection region 6.
  • Figures 3A and 3B show two structural parts 12, i.e., an upper and a lower structural part.
  • the two structural parts 12 fit together to envelope the assembly represented by the fan element 4, the connection region 3 (with the hatch 10) and the heat exchanger 3.
  • the shape of the structural parts 12 is such that they follow the shapes of the enclosed elements.
  • the front side has a circular profile to fit together with the fan element 4 and the rear side has an angular profile to fit together with at least a portion of the heat exchanger 3.
  • the upper and the lower structural parts have both a semi-circular profile at the front side such that, when fitted together, they form a circular profile to completely envelope the fan element 4.
  • the assembled configurations of the air conduction duct 1 together with the fan element 4 and the heat exchanger 3 are shown in detail in figures 4A-D.
  • figures 4A- B show the configuration without structural parts 12, whereas the figures 4C-D show the configuration with structural parts 12.
  • the upper and lower structural parts basically envelope a good part of the fan element 4 and the connection region 6 but that a portion of the heat exchanger 3 is not covered.
  • FIG. 4C shows the presence of an accessing opening 14 on a top surface of the upper structural part 12. This serves to access the inside of the air conduction duct 1, i.e. to access the fan element 4 and the heat exchanger 3, through the inspection opening 9 present on the top of the connection region 6 that can be opened using a corresponding hatch 10 (see figure 4A).
  • Figure 5 shows structural details of the air guiding duct 1.
  • connection region between the inlet region 7 and the outlet region 8 is a sloped surface having an average slope ⁇ of less than 45°, preferably less than 35°, with respect to a central axis 11 of the fan element 4.
  • the angle ⁇ is the angle formed between the central axis 11 of the fan element 4 (dotted-dashed line in the figure) and a line defining the lateral profile of the connection region 6 (dashed line in the figure).
  • connection region 6 shows a configuration, wherein the connection region 6 of the air conduction duct 1 is connected between a heat exchanger 3 and two fan elements 4.
  • the connection region is therefore adapted to receive at least a portion of two fan elements 4 in addition to receive a portion of the heat exchanger 3.
  • the connection region 6 comprises a single inlet region 7 and two outlet regions 8 so that the air flow is directed from the heat exchanger 3 to the two fan elements 4.
  • the surface dimensions of the inlet region 7 is greater than the sum of the surface dimensions of the two outlet regions 8.
  • the connection region 6 can be provided with an access opening 9 coupled to a hatch 10 for accessing the heat exchanger 3 and both fan elements 4 from outside.
  • suitable designed structural parts similar to the structural parts shown in previous figures 3A- 3B and 4C-4D, can be used to envelope the assembly formed by the heat exchanger 3, the connection region 6 (with the hatch 10) and the two fan elements 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

L'invention concerne un conduit de guidage d'air (1) pour un dispositif de chauffage (2), en particulier pour une pompe à chaleur, le dispositif de chauffage (2) ayant un échangeur thermique (3) et au moins un élément de ventilateur (4) disposé dans un espace interne (5) du dispositif de chauffage (2), le conduit de guidage d'air (1) ayant une région de raccordement (6) pour recevoir au moins une partie de l'échangeur thermique (3) dans une région d'entrée (7) et pour recevoir au moins une partie de l'élément de ventilateur (4) dans une région de sortie (8), au moins une partie de la région de raccordement (6) ayant une rugosité de surface inférieure à 250 µm, en particulier inférieure à 100 µm.
PCT/EP2023/055341 2022-03-11 2023-03-02 Conduit de guidage d'air WO2023169927A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP22161653.5A EP4242536A1 (fr) 2022-03-11 2022-03-11 Ensemble modulaire de guidage d'air
EP22161653.5 2022-03-11
EP22182713.2A EP4303498A1 (fr) 2022-07-04 2022-07-04 Ensemble support
EP22182713.2 2022-07-04
EP22201679.2 2022-10-14
EP22201679.2A EP4354066A1 (fr) 2022-10-14 2022-10-14 Conduit de guidage d'air

Publications (1)

Publication Number Publication Date
WO2023169927A1 true WO2023169927A1 (fr) 2023-09-14

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ID=85505601

Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/EP2023/055352 WO2023169930A1 (fr) 2022-03-11 2023-03-02 Ensemble guidage d'air modulaire
PCT/EP2023/055354 WO2023169931A1 (fr) 2022-03-11 2023-03-02 Ensemble de support
PCT/EP2023/055341 WO2023169927A1 (fr) 2022-03-11 2023-03-02 Conduit de guidage d'air

Family Applications Before (2)

Application Number Title Priority Date Filing Date
PCT/EP2023/055352 WO2023169930A1 (fr) 2022-03-11 2023-03-02 Ensemble guidage d'air modulaire
PCT/EP2023/055354 WO2023169931A1 (fr) 2022-03-11 2023-03-02 Ensemble de support

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