EP4119853A1 - Module de circulation d'air - Google Patents

Module de circulation d'air Download PDF

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Publication number
EP4119853A1
EP4119853A1 EP22185271.8A EP22185271A EP4119853A1 EP 4119853 A1 EP4119853 A1 EP 4119853A1 EP 22185271 A EP22185271 A EP 22185271A EP 4119853 A1 EP4119853 A1 EP 4119853A1
Authority
EP
European Patent Office
Prior art keywords
housing
room air
fan
air
fresh air
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP22185271.8A
Other languages
German (de)
English (en)
Inventor
Alexander Schechner
Gerhard Ihle
Nicole Franzoi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Envola GmbH
Original Assignee
Envola GmbH
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
Application filed by Envola GmbH filed Critical Envola GmbH
Publication of EP4119853A1 publication Critical patent/EP4119853A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • 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
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/032—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers
    • F24F1/0323—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers by the mounting or arrangement of the heat exchangers

Definitions

  • the invention relates to a recirculation module with fresh air admixture, which not only circulates the room air in an interior of a building, but can also add fresh air to it.
  • the task is to provide a recirculation module with fresh air admixture.
  • the task is solved by an air recirculation module with the features of claim 1 .
  • the recirculation module with fresh air admixture which can be mounted on a building wall of an interior, comprises a housing with a rear facing away from the interior, which has a recess for fresh air supply, and a room air inlet opening and a room air outlet opening, at least one heat exchanger arranged in the housing, at least one arranged in the housing backward operable radial fan with an air outlet facing the heat exchanger, and a fan arranged in the housing that supplies fresh air.
  • the air recirculation module is designed to circulate the room air in at least one interior space of the building and to temper it in the process. Fresh air is added to improve the room climate. This increases the level of comfort for people who breathe in and out, and thus people who consume breathing air.
  • the recirculation module is usually fixed to the building wall or installed as an element integrated into the housing wall, so that the rear side faces away from the interior of the interior. In the building's temperature-regulating air conditioning system, the recirculation module contributes to temperature regulation and fresh air supply. Although it is usually designed as a separate device, it can be viewed as a module of the decentralized air conditioning system, as part of which it can also be controlled. Alternatively or additionally, stand-alone operation is possible.
  • the air recirculation module can be mounted on the building wall inside the building so that it has access both to the room air that flows through the air recirculation module and to fresh air.
  • the building wall on which the recirculation module is mounted is advantageously a building wall that separates the interior from the exterior. Fresh air can be accessed, for example, through a recess in the wall. It can be mounted in a recess in the wall, for example at the top of a window or door opening, allowing for easy access to fresh air.
  • the assembly is advantageously carried out in a roller shutter box, which is a box-like component for receiving a rolled-up roller shutter. The assembly takes place on the side of the roller shutter box facing the interior, so that the function of the roller shutter box and its roller shutter is not impaired.
  • the housing encloses the radial fan that can be operated backwards, the fan that supplies fresh air and is advantageously arranged on the cutout, and the heat exchanger.
  • the room air inlet opening and the room air outlet opening are recesses in the housing, through which room air flows into and out of the housing, in which the temperature control and the fresh air admixture takes place.
  • the reverse-operated centrifugal fan has a radial air inlet and an axial air outlet, so that the air flows radially into the reverse-operated Radial fan flows and is bundled into an axially outflowing air flow.
  • a conventional radial fan that can be operated forwards the situation would be reversed: With a radial fan that can be operated forwards, the air inlet is axial and the air outlet is radial.
  • the radial fan which can be operated backwards, sucks the room air through the room air inlet opening into the housing and directs it to the heat exchanger.
  • the heat exchanger is designed to transfer thermal energy from the room air to a fluid flow flowing through it or vice versa.
  • the fluid stream flows through the pipes of the heat exchanger, which the room air flows past on the outside, so that energy is transferred.
  • the aim is to cool the room air by dissipating the thermal energy of the room air through the fluid flow in the heat exchanger, so that the room air cools down.
  • thermal energy is transferred from the fluid flow to the room air flowing past.
  • the temperature-controlled room air flows out of the housing through the room air outlet opening.
  • the cutout for supplying fresh air and the fan which supplies fresh air and is arranged on the cutout are designed for the admixture of fresh air into the temperature-controlled room air.
  • This fan is designed to suck fresh air through the cutout into the housing, so that it then flows out of the room air outlet opening and is mixed with the temperature-controlled room air.
  • the heat exchanger is arranged between the rear of the housing and the radial fan, so that the room air flows from the front to the rear through the heat exchanger from the radial fan.
  • the air outlet of the reverse-operated centrifugal fan faces the rear of the housing to achieve this flow.
  • the room air inlet opening and the room air outlet opening are on one long side of the Arranged housing, since the fresh air supply is already provided at the back.
  • the front and rear of the housing direct the flow of room air to the air inlet of the radial fan or, after flowing through the heat exchanger, in the direction of the room air outlet opening.
  • the room air outlet opening is elongate and located adjacent to the rear
  • the room air inlet opening is elongate and located adjacent to the front of the housing that faces away from the building wall.
  • the room air flows onto the radial air inlet of the radial fan arranged at the front and, after flowing through the heat exchanger, is directed towards the room air outlet opening at the rear.
  • the first long side is an underside of the housing, so that the room air flows into and out of the air recirculation module from below.
  • the fan that supplies fresh air is designed as a radial fan that can be operated forward, so that the fresh air flows axially through the cutout onto the fan and then flows radially into the interior of the housing.
  • the admixed fresh air is guided to the room air outlet opening, through which it flows out, by means of a flow barrier which is open on the longitudinal side with the room air outlet opening and extends radially around the fan supplying fresh air. It can be U-shaped or horseshoe-shaped.
  • a plurality of backwards-operable radial fans and heat exchangers also including the above-mentioned radial fan and heat exchanger, is provided, with each radial fan being assigned to a heat exchanger in one embodiment, so that the air outlets of the backwards-operable radial fans each face a heat exchanger.
  • the radial fans are arranged along the front inside the housing.
  • the Heat exchangers are arranged along the rear inside the housing.
  • the reverse arrangement namely radial fans at the rear and heat exchangers at the front, is possible in an alternative arrangement.
  • the number of radial fans and heat exchangers differs, so that several radial fans direct their air outlet to the same heat exchanger.
  • the fan supplying fresh air is arranged between two radial fans out of the plurality of radial fans, so that it is arranged in a central area of the housing.
  • figure 1 shows a three-dimensional rear view of an embodiment of a recirculation module 1.
  • the air recirculation module 1 comprises a housing 3 with a rear side 5, an opposite front side 7, a lower longitudinal side 9 and an opposite upper longitudinal side 11 as well as two opposite transverse sides 13.
  • the housing 3 has the shape of an elongated cuboid and is dimensioned such that it a roller shutter box can be installed. In the case of a recirculation module 1 for wall mounting, other dimensions can be provided.
  • a room air inlet opening 15 and a room air outlet opening 17 through which room air flows into and out of the housing 3 are arranged on the lower longitudinal side 9 .
  • the room air inlet opening 15 is elongate and arranged adjacent to the front side 7 .
  • the room air outlet opening 17 is elongate and arranged adjacent to the rear side 5 .
  • grids and slats are provided on the room air inlet opening 15 and on the room air outlet opening 17 .
  • the recess 19 is circular.
  • figure 2 shows a three-dimensional front view of the air recirculation module 1, in which the front housing wall has been removed.
  • a plurality of radial fans 21 which can be operated backwards are arranged inside the housing.
  • "Operable backwards" means that the air inlet is radial and the air outlet is axial.
  • four radial fans 21 that can be operated backwards are provided, which are arranged next to one another along the front side 7 so that their air outlets face the rear side 5 .
  • a fan 23 supplying fresh air is arranged between the radial fans 21 that can be operated backwards, around which a flow barrier 27 extends.
  • figure 3 shows a three-dimensional rear view of the air recirculation module 1, in which the rear housing wall has been removed.
  • a plurality of heat exchangers 25 are arranged inside the housing.
  • four heat exchangers 25 are provided, which are arranged next to one another along rear side 5 , so that each radial fan 21 that can be operated backwards is assigned a heat exchanger 25 that is arranged between radial fan 21 and rear side 5 .
  • the air outlets face the heat exchangers 25 .
  • the fan 23 supplying fresh air is arranged between the heat exchangers 25 , so that two radial fans 21 and two heat exchangers 25 are provided on each side of the fan 23 supplying fresh air.
  • the fan 23 supplying fresh air is arranged on the recess 19 in the interior of the housing, so that it can direct fresh air through the recess 19 into the interior of the housing.
  • the fan 23 supplying fresh air is designed as a radial fan 21 that can be operated forward.
  • "Forward operable" means that the Air inlet is axial and air outlet is radial.
  • figure 4 shows a side view of the air circulation module 1, in which the side wall has been removed.
  • the radial fans 21 which can be operated backwards, and the heat exchangers 25 are arranged between the front side 7 and the rear side 5 of the housing 3 , so that the air inlets of the radial fans 21 are arranged above the room air inlet opening 15 .
  • the heat exchangers 25 are arranged between the room air inlet opening 15 and the room air outlet opening 17 .
  • the radial fans 21, which can be operated backwards suck in the room air through the room air inlet opening 15 and direct it through the heat exchanger 25 to the rear side 5 of the housing 3, from which it is then directed downwards to the room air outlet opening 17 and flows out of the recirculation module 1.
  • the interaction of the room air with the heat exchangers 25 leads to a temperature change in the room air. In cooling mode, the room air is pleasantly cool even in summer. In winter it is mainly heated.
  • the room climate is improved by circulating and tempering the room air with the simultaneous addition of fresh air.
  • the share of admixed fresh air is low compared to the circulated air, since a large part of the room air has to be passed through the heat exchanger 25 to cool it down.
  • the proportion of room air that has to be renewed due to exhaling and inhaling building occupants is small and hardly influences the temperature control process.
  • a typical maximum value for added fresh air is 20%.
  • the air recirculation module 1 can be mounted on a building wall so that the room air inlet opening 15 and the room air outlet opening 17 are arranged inside the building and the recess 19 has access to fresh air.
  • figure 5 shows a schematic sectional view of the assembly of the air recirculation module 1 in a roller shutter box 29.
  • the roller shutter box 29 is arranged above a window 31 in a building wall 33 which separates the interior and exterior from one another.
  • the air recirculation module 1 is mounted above the window 31 on the side of the roller shutter box 29 facing the inside of the building, so that the back 5 faces the inside of the roller shutter box and the room air inlet opening 15 and the room air outlet opening 17, which are arranged on the lower longitudinal side 9, are positioned inside the building.
  • FIG 6 A side view and a sectional view of an exemplary embodiment of a radial fan 21 that can be operated backwards are shown.
  • the sectional view is along lines A-A'.
  • the radial fan 21 in turn has a plurality of blades 35 which, in reverse operation 37 , can be set into rotary motion, as shown. Inside there are several lamellae 39. The rotating movement of the blades 35 in turn brings air radially from the outside into the inside of the arrangement, so that the air can escape in the axial direction.
  • the functioning of the radial fan 21 that can be operated backwards can be clearly illustrated using the cross-sectional view. It can be seen that in reverse operation 37 several blades 35 push air radially inwards. A tapering area is formed between the lamellae 39 , as indicated by the distances 41 and 43 between two adjacent lamellae 39 . Since there is an increase in pressure in the tapering area, the air will escape axially upwards without being set in rotary motion. In this way, low-noise fan operation can be generated.
  • the inner tear-off edge 45 of the blade 35 of the radial fan 21 has a structure. It is jagged, for example. This leads to a further noise reduction. Furthermore, the tear-off edge 45 is curved towards the air outlet, so that the area from which the air emerges is not additionally covered by the blade 35 . In this way, the size of the outlet opening is optimized. With the measures shown, both a suitably large amount of air flow can be guided through the heat exchanger 25 and very low-noise or almost no-noise operation can be achieved. The last aspect in particular is desirable when used in private households or offices.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
EP22185271.8A 2021-07-16 2022-07-15 Module de circulation d'air Pending EP4119853A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021118416.9A DE102021118416A1 (de) 2021-07-16 2021-07-16 Umluftmodul

Publications (1)

Publication Number Publication Date
EP4119853A1 true EP4119853A1 (fr) 2023-01-18

Family

ID=82608097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22185271.8A Pending EP4119853A1 (fr) 2021-07-16 2022-07-15 Module de circulation d'air

Country Status (2)

Country Link
EP (1) EP4119853A1 (fr)
DE (1) DE102021118416A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190024909A1 (en) * 2017-07-21 2019-01-24 Samsung Electronics Co., Ltd. Air conditioner
CN209042546U (zh) * 2018-09-20 2019-06-28 广东美的制冷设备有限公司 空调室内机和空调器
WO2019223473A1 (fr) * 2018-05-21 2019-11-28 青岛海尔空调器有限总公司 Unité intérieure de climatiseur et procédé de commande associé
CN110887127A (zh) * 2018-09-07 2020-03-17 青岛海尔空调器有限总公司 风管机及具有其的空调器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4553405A (en) 1983-12-09 1985-11-19 Carrier Corporation Vent assembly for use with an air conditioning unit
JP2606013B2 (ja) 1991-07-30 1997-04-30 三菱電機株式会社 換気扇
DE202009002033U1 (de) 2009-04-03 2009-06-25 Weiss Klimatechnik Gmbh Anordnung zur Klimatisierung eines Raums
IT1397988B1 (it) 2010-02-10 2013-02-04 Savio Spa Dispositivo di scambio d'aria per edifici

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190024909A1 (en) * 2017-07-21 2019-01-24 Samsung Electronics Co., Ltd. Air conditioner
WO2019223473A1 (fr) * 2018-05-21 2019-11-28 青岛海尔空调器有限总公司 Unité intérieure de climatiseur et procédé de commande associé
CN110887127A (zh) * 2018-09-07 2020-03-17 青岛海尔空调器有限总公司 风管机及具有其的空调器
CN209042546U (zh) * 2018-09-20 2019-06-28 广东美的制冷设备有限公司 空调室内机和空调器

Also Published As

Publication number Publication date
DE102021118416A1 (de) 2023-01-19

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