EP4296584A1 - Lüfterspuleneinheit - Google Patents

Lüfterspuleneinheit Download PDF

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Publication number
EP4296584A1
EP4296584A1 EP23180601.9A EP23180601A EP4296584A1 EP 4296584 A1 EP4296584 A1 EP 4296584A1 EP 23180601 A EP23180601 A EP 23180601A EP 4296584 A1 EP4296584 A1 EP 4296584A1
Authority
EP
European Patent Office
Prior art keywords
fan coil
coil unit
casing
box
duct
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
EP23180601.9A
Other languages
English (en)
French (fr)
Inventor
Valerio Giordano Riello
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.)
Aermec SpA
Original Assignee
Aermec SpA
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 Aermec SpA filed Critical Aermec SpA
Publication of EP4296584A1 publication Critical patent/EP4296584A1/de
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
    • 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
    • F24F1/0087—Indoor units, e.g. fan coil units with humidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0008—Control or safety arrangements for air-humidification
    • 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
    • F24F13/20—Casings or covers

Definitions

  • the present invention relates to a fan coil unit.
  • the present invention relates to a wall-type fan coil unit, to which the following disclosure will explicitly refer without thereby losing generality.
  • wall-type fan coil units are apparatuses substantially parallelepiped in shape, which are arranged in vertical position inside the place to be air-conditioned, usually close to the floor and grazing one of the walls of the place, and are adapted to heat or cool the air present inside the place.
  • the fan coil units currently on the market usually comprise: a rigid and substantially parallelepiped-shaped, box-like outer casing which is structured to be firmly fixed to the wall in vertical position, at more or less ten centimetres from the floor, and is internally provided with a large air-circulation duct, which extends vertically and in pass-through manner from one side to the other of the box-like casing, and is closed at the top by a large protective grid; an air/liquid heat exchanger, which is located inside the air-circulation duct so as to be lapped /crossed by the air flowing along the duct, and is connected to an external hydraulic circuit so as to be additionally continuously crossed by a flow of hot or cold water; and an electrically-operated fan, which is located inside the vertical through-duct, under the heat exchanger, and is adapted to produce an upward airflow that crosses the entire length of the air-circulation duct, crossing/lapping the heat exchanger.
  • the airflow produced by the fan absorbs or releases heat to the water respectively hot or cold coming from the external hydraulic circuit.
  • the aforementioned fan coil units usually comprise also: a condensate collection tray, which is located inside the box-like casing, immediately beneath the heat exchanger, and is adapted to collect the drops of condensed water that, in use, fall from the heat exchanger when the latter is crossed by cold water; and a plate-like air filter, which is arranged to close the bottom mouth of the air-circulation duct, beneath the fan, and is adapted to hold the dusts in suspension in the air.
  • these fan coil units are provided with an ultrasonic water-vapor generator and with a water-vapor distribution pipe that extends horizontally inside the air-circulation duct, spaced apart above the heat exchanger, and is laterally provided with a series of openings through which the water vapor coming from the vapor generator is introduced in the airflow coming out of the fan coil unit.
  • Aim of the present invention is to realize a wall-type fan coil unit, which is more cost-effective to produce and is moreover exempt from the above-described drawbacks.
  • a fan coil unit as defined in Claim 1 and preferably, though not necessarily, in any of the claims dependent thereon.
  • a wall-type fan coil unit which is adapted to heat or cool the air present inside a generic place to be air-conditioned, and is particularly adapted to be arranged inside the place to be air-conditioned in a substantially vertical position, preferably grazing one of the walls of the place and preferably at a short distance from the floor.
  • fan coil unit 1 is particularly adapted to be also firmly anchored to the wall of the place to be air-conditioned.
  • the fan coil unit 1 is provided with a substantially rigid, box-like outer casing 2 with a self-supporting structure, which is preferably substantially parallelepiped in shape, and is structured so as to be set against and, optionally, also firmly anchored to the wall P of the place to be air-conditioned in a substantially vertical position.
  • the box-like outer casing 2 is adapted to be fixed to the wall.
  • the fan coil unit 1 moreover comprises: a large through-duct 3, which extends in pass-through manner across the box-like casing 2 preferably while remaining astride of the midplane M of the fan coil unit, and is adapted to be crossed by the external/ambient air; at least one electrically-operated fan 4 or similar device, which is located inside the through-duct 3 and is adapted to circulate an airflow f along the through-duct 3; and at least one air/liquid heat exchanger 5, which is located inside the through-duct 3 so as to be crossed/lapped by the airflow crossing the through-duct 3, and is adapted to subtract or release heat to the same airflow.
  • the heat exchanger 5 is preferably located spaced apart above the fan 4, and is specifically structured for being connected to an external hydraulic circuit (not shown) so as to be additionally continuously crossed by a flow of water or other heat-transfer liquid at a preset temperature.
  • the heat exchanger 5 is thus adapted to heat or cool the air that flows along the through-duct 3, depending on the temperature of the water or other heat-transfer liquid crossing it.
  • the value of the temperature of the water or other heat-transfer liquid is furthermore controlled by an outer cooling and/or heating system.
  • the fan coil unit 1 is also provided with an electronic control unit 6, which is preferably located inside the box-like casing 2, and is adapted to control the fan 4.
  • the electronic control unit 6 is preferably programmed/configured to activate and deactivate the fan 4 based on signals coming from at least one temperature sensor (not shown in the figures), which is adapted to measure the temperature of the air present inside the place to be air-conditioned, and is preferably placed outside of the box-like casing 2.
  • said temperature sensor is advantageously placed outside of the fan coil unit 1.
  • the fan coil unit 1 preferably additionally also comprises a condensate collection tray 7 and/or an air filter 8.
  • the condensate collection tray 7 is located immediately beneath the heat exchanger 5, so as to be able to collect the drops of condensed water that, in use, form and fall by gravity from the heat exchanger 5 when the exchanger cools the airflow crossing/lapping it.
  • the air filter 8 in turn, is located along the through-duct 3, preferably upstream of the heat exchanger 5 and/or of the fan 4, and is adapted to hold the dust and the other impurities in suspension in the air that flows along the through-duct 3.
  • the fan coil unit 1 additionally comprises an electrically-operated humidifier assembly 9, which is at least partially housed/ recessed inside the box-like casing 2, and is adapted to increase, on command, the moisture content of the air contained in the place to be air-conditioned.
  • the humidifier assembly 9 is adapted to introduce water vapor inside the place to be air-conditioned, and is preferably substantially entirely housed inside the box-like casing 2.
  • the electronic control unit 6, is preferably programmed/configured to control, or rather activate and deactivate, the humidifier assembly 9 depending on signals coming from at least one humidity sensor (not shown in the figures), which is adapted to measure the moisture content of the air present inside the place to be air-conditioned, and is preferably placed outside of the box-like casing 2.
  • said humidity sensor is advantageously placed outside of the fan coil unit 1.
  • the box-like casing 2 preferably has a substantially flat, front face 2a and a substantially flat, rear face 2b which are opposite and advantageously also substantially parallel to each other, and are both arranged astride of the midplane M of the fan coil unit, substantially perpendicular to the latter; a substantially flat, upper face 2c and a substantially flat, bottom face 2d which are opposite and advantageously also substantially parallel to each other, and are both arranged astride of the midplane M of the fan coil unit, substantially perpendicular to the latter and to the front 2a and rear 2b faces; and finally two, substantially flat, side faces 2e which are opposite and advantageously also substantially parallel to each other, and are arranged spaced apart on opposite sides of the midplane M of the fan coil unit, substantially perpendicular to the latter and to the front 2a, rear 2b, top 2c and bottom 2d faces.
  • box-like casing 2 is preferably structured so that its rear face 2b can be set against and preferably also firmly anchored to the wall P of the place to be air-conditioned, simultaneously arranging the front face 2a and the two side faces 2e in a substantially vertical position, and the upper face 2c and the bottom face 2d in a substantially horizontal position.
  • the box-like casing 2 of fan coil unit 1 is moreover adapted to be set against or fixed to the wall P of the place to be air-conditioned, with the bottom face 2d at a distance of approximately 5-25 cm (centimetres) from the floor.
  • the through-duct 3 is preferably substantially rectilinear, and preferably extends from one side to the other of the box-like casing 2 in a substantially vertical direction, so that its two mouths are located one on the upper face 2c and the other on the bottom face 2d of the box-like casing 2.
  • the fan 4 is preferably structured so as to generate an upward airflow that enters the through-duct 3 via the mouth placed on the bottom face 2d of the box-like casing 2, flows along the through-duct 3 crossing/ lapping the heat exchanger 5, and then comes out of the fan coil unit 1 via the mouth placed on the upper face 2c of the box-like casing 2.
  • the inlet mouth 3a of through-duct 3 is preferably located on the bottom face 2d of box-like casing 2, whereas the outlet mouth 3b of through-duct 3 is preferably located on the upper face 2c of box-like casing 2.
  • the box-like casing 2 of fan coil unit 1 preferably comprises: an inner frame 10 having a rigid and self-supporting structure, which is preferably at least partially made of metal material, and is structured so as to be set against and preferably also firmly anchored to the wall P, at a preset distance from the underlying ground; and a substantially rigid, outer shell 11 having a roughly concave half-shell shape, which is preferably at least partially made of metal material, and is fitted and fixed to the inner frame 10 so as to surround and substantially cover the entire inner frame 10, preferably also arranging itself grazed to the wall P.
  • the outer shell 11 is thus adapted to form the front face 2a and the two opposite side faces 2e of box-like casing 2, and optionally additionally the upper face 2c and/or the bottom face 2d of box-like casing 2.
  • the outer shell 11 is preferably shaped like a substantially rectangular basin.
  • the outer shell 11 preferably moreover comprises: a substantially rectangular-shaped and preferably made of metal material, large central plate 12 which is substantially U-folded so as to form the front face 2a and the two side faces 2e of the box-like casing 2; a plate-like upper panel 13, which is preferably made of plastic material, and is fixed to the upper edge of the central plate 12 so as to form the upper face 2c of box-like casing 2; and optionally also a plate-like bottom panel 14, which is preferably made of plastic material, and is fixed to the bottom edge of the central plate 12 so as to form the bottom face 2d of box-like casing 2.
  • the central flat sector of central plate 12 forms the front wall of outer shell 11, or rather the front face 2a of casing 2.
  • the plate-like upper panel 13 forms the upper wall of outer shell 11, or rather the upper face 2c of box-like casing 2.
  • the inlet mouth 3a of through-duct 3 is preferably located on the plate-like bottom panel 14 of shell 11, and is optionally closed by a protection grid advantageously incorporated in the same plate-like bottom panel 14.
  • the outlet mouth 3b of through-duct 3, on the other hand, is preferably located on the plate-like upper panel 13 of shell 11, and is preferably closed by a protection grid 15 that is advantageously incorporated in upper panel 13 and is optionally provided with manually openable and/or adjustable deflector fins.
  • the inner supporting frame 10 of box-like casing 2 in turn, preferably has a substantially U-shaped structure, and the through-duct 3 extends vertically inside the supporting frame 10.
  • through-duct 3 is laterally delimited by the two wings of the U-shaped inner supporting frame 10.
  • the inner supporting frame 10 is preferably made of metal sheet, and preferably comprises: a preferably approximately rectangular in shape, central flat partition or segment 16 which is arranged substantially perpendicular to the midplane M of the fan coil unit, and is adapted to be rested and preferably additionally firmly anchored to the wall P; and a pair of preferably substantially rectangular in shape, lateral flat partitions or segments 17 which are integral with and extend cantilevered from the central flat partition 16 on opposite sides of the latter, so as to be arranged substantially parallel to and facing each other, spaced apart on opposite sides of the midplane M of the fan coil unit.
  • the outer shell 11 is preferably shaped like a substantially rectangular basin, and is preferably fitted onto the U-shaped supporting frame 10, so as to arrange its front wall, or rather the bottom of the basin, resting on the outer side edges of the two fins of the inner frame 10, i.e. on the outer edges of the two lateral flat partitions 17.
  • the heat exchanger 5 is preferably also inclined with respect to the vertical, or rather to the longitudinal axis of through-duct 3, by an angle advantageously ranging between 30° and 60°, and it is advantageously also dimensioned so as to substantially take up the entire free section of through-duct 3 in order to be crossed/lapped by substantially the whole air flowing along the through-duct 3.
  • the inner supporting frame 10 is preferably shaped/structured so as to additionally delimit, inside the shell 11, the lateral service compartments 18 and 19.
  • the service compartment 19, in turn, preferably houses the hydraulic fittings, the on-off valves and/or the other hydraulic components (not shown in the figures) that allow connecting the heat exchanger 5 to the external hydraulic circuit (not shown).
  • the condensate collection tray 7 is preferably made of plastic material, and is preferably structured so as to discharge by gravity the condensed water outside of the fan coil unit 1, preferably in an external discharge duct (not shown).
  • the condensate collection tray 7 is preferably oblong in shape and extends in bridge-like manner between the two lateral flat partitions 17 of the inner supporting frame 10, immediately under the heat exchanger 5, i.e. between the heat exchanger 5 and the fan 4.
  • the condensate collection tray 7 is furthermore dimensioned so as to take up the entire section of the through-duct 3.
  • the delivery mouth(s) of the centrifugal fan 4 are preferably inserted in the condensate collection tray 7 so as to protrude cantilevered above the condensate collection tray 7. Therefore, the airflow f crossing the through-duct 3 overtakes the condensate collection tray 7 passing inside the volute(s) of the centrifugal fan 4.
  • the air filter 8 preferably has a plate-like structure and is preferably located at the inlet mouth 3a of through-duct 3.
  • the plate-like air filter 16 is preferably dimensioned so as to substantially take up the entire passage section of the through-duct 3, so as to be able to filter substantially the all airflow crossing the through-duct 3.
  • the removable modular unit 20 is preferably an ultrasonic humidifier device.
  • the removable modular unit 20 is moreover electrically connected to the internal electrical circuit (not shown in the figures) of the fan coil unit 1, so as to be powered together with the rest of the electrical and/or electronic components of fan coil unit 1.
  • the fan coil unit 1, or rather the box-like casing 2 is preferably additionally provided with a small movable door, which is adapted to selectively close the access opening of housing seat 21, advantageously so as to substantially conceal the entire removable modular unit 20 from view.
  • the removable modular unit 20 is preferably provided with a delivery mouth through which the water vapor comes out, and such delivery mouth is preferably structured/shaped so as to surface or extend outside of the box-like casing 2 when the removable modular unit 20 engages the housing seat 21.
  • the housing seat 21 preferably extends/ prolongs inside the service compartment 18 in a direction substantially perpendicular to the upper face 2c of box-like casing 2, i.e. in a substantially vertical direction.
  • the removable modular unit 20 is preferably structured so as to interlock in a freely slidable manner on the rectilinear rail 23.
  • the fan coil unit 1 preferably additionally comprises a first quick-coupling electric connector 24, which is in electrical continuity with the internal electrical circuit (not shown in the figures) of the fan coil unit 1 and/or with the electronic control unit 6.
  • the quick-coupling electric connector 24 is preferably located on the rectilinear rail 23.
  • the container for liquids is moreover structured so as to attach/fix in easy removable manner to the box-like casing 2, or rather to the inner supporting frame 10 of box-like casing 2, via said sliding interlocking coupling.
  • the delivery mouth 27a preferably protrudes cantilevered from the top of lid 27.
  • the delivery mouth 27a advantageously has a substantially duckbill shape.
  • the second quick-coupling electric connector is preferably located on the top lid 27 vertically aligned to the vertical rectilinear groove of vessel 25.
  • the removable modular unit 20 is extremely quick to mount inside the box-like casing 2, with the drastic reduction in the assembly time of the fan coil unit 1 which this entails.
  • Last, but not least, the cleaning and/or the filling of the removable modular unit 20 can be performed autonomously by the final user, thus simplifying the ordinary maintenance operations.
  • the through-duct 3 of the fan coil unit 1 may have a substantially T-shaped structure, with an inlet mouth and two distinct outlet mouths.
  • the inlet mouth is preferably located on the front face 2a of the outer casing 2, or rather on the front wall of the outer shell 11.
  • a first outlet mouth is preferably located on the upper face 2c of the outer casing 2, or rather on the plate-like upper panel 13 of outer shell 11.
  • the second outlet mouth is preferably located on the bottom face 2d of outer casing 2, or rather on the plate-like bottom panel of outer shell 11.
  • the humidifier assembly of the fan coil unit 1 includes a removable modular unit 20, which is inserted/insertable in easy removable manner into a corresponding housing cavity or seat 21, which preferably extends inside one of the two lateral service compartments 18 and 19 of the fan coil unit 1, and preferably has the access opening located on the upper face 2c of the box-like casing 2, advantageously beside the upper outlet mouth of the through-duct 3.
  • the removable modular unit 20 is preferably structured/dimensioned so as to be substantially entirely contained inside the housing seat 21, and is preferably electrically connected to the internal electrical circuit of fan coil unit 1, so as to be powered together with the rest of the electrical and/or electronic components of the fan coil unit 1 and/or so as to be controlled by the electronic control unit 6 based on signals coming from said at least one humidity sensor.
  • the removable modular unit 20 is not controlled by the electronic control unit 6.
  • the removable modular unit 20 is simply electrically connected to the internal electrical circuit (not shown in the figures) of the fan coil unit 1, so as to be powered together with the rest of the electrical and/or electronic components of the fan coil unit 1.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
EP23180601.9A 2022-06-23 2023-06-21 Lüfterspuleneinheit Pending EP4296584A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202200013351 2022-06-23

Publications (1)

Publication Number Publication Date
EP4296584A1 true EP4296584A1 (de) 2023-12-27

Family

ID=83188114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23180601.9A Pending EP4296584A1 (de) 2022-06-23 2023-06-21 Lüfterspuleneinheit

Country Status (1)

Country Link
EP (1) EP4296584A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019148750A1 (zh) * 2018-01-30 2019-08-08 广东美的制冷设备有限公司 柜机
CN111006324A (zh) * 2019-12-18 2020-04-14 青岛海尔空调器有限总公司 空调内机
WO2020206964A1 (zh) * 2019-04-10 2020-10-15 珠海格力电器股份有限公司 空调器
CN113883603A (zh) * 2021-09-30 2022-01-04 美的集团武汉暖通设备有限公司 空气处理设备及其控制方法和控制装置、可读存储介质
CN114198816A (zh) * 2020-09-17 2022-03-18 广东美的制冷设备有限公司 空气处理模块、空调室内机及空调器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019148750A1 (zh) * 2018-01-30 2019-08-08 广东美的制冷设备有限公司 柜机
WO2020206964A1 (zh) * 2019-04-10 2020-10-15 珠海格力电器股份有限公司 空调器
CN111006324A (zh) * 2019-12-18 2020-04-14 青岛海尔空调器有限总公司 空调内机
CN114198816A (zh) * 2020-09-17 2022-03-18 广东美的制冷设备有限公司 空气处理模块、空调室内机及空调器
CN113883603A (zh) * 2021-09-30 2022-01-04 美的集团武汉暖通设备有限公司 空气处理设备及其控制方法和控制装置、可读存储介质

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