US3708011A - Local air conditioning apparatus - Google Patents

Local air conditioning apparatus Download PDF

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Publication number
US3708011A
US3708011A US00096784A US3708011DA US3708011A US 3708011 A US3708011 A US 3708011A US 00096784 A US00096784 A US 00096784A US 3708011D A US3708011D A US 3708011DA US 3708011 A US3708011 A US 3708011A
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United States
Prior art keywords
fan
housing
chambers
air conditioning
outlet
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.)
Expired - Lifetime
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US00096784A
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English (en)
Inventor
A Serratto
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Individual
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Individual
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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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/08—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with separate supply and return lines for hot and cold heat-exchange fluids i.e. so-called "4-conduit" system
    • 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
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • F24F1/00077—Indoor units, e.g. fan coil units receiving heat exchange fluid entering and leaving the unit as a liquid
    • 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
    • F24F1/0038—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room in combination with simultaneous exhaustion of inside air
    • 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
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • 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
    • F24F1/0068—Indoor units, e.g. fan coil units characterised by the arrangement of refrigerant piping outside the heat exchanger within the unit casing
    • 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
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • 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
    • F24F1/0035—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

Definitions

  • ABSTRACT A local air conditioning apparatus for installations with distribution of secondary water through four pipes, comprising two heat-exchangers housed in two different chambers with an interposed neutral or bypass chamber, and a fan for conveying the air to be conditioned through one or two of said chambers, said fan being rotatable so that its outlet can be adjusted in a stepless way to correspond with the inlet of one of the chambers or bridging the inlet of two adjacent chambers.
  • This invention relates to a local air conditioning apparatus for air conditioning installations constructed according to the convector-fan system with secondary water distribution through four pipes.
  • Air conditioning installations are known, in which, contrary to centralized air conditioning installations where all the air is conditioned in one single space the air is conditioned in the decentralized spaces of the individual air conditioned rooms. This is made possible by adopting a large number of localair conditioning apparatus, part or none of the conditioning operations being performed centrally and the remaining part thereof being performed directly in the rooms, in accordance with the control and adjustment requirements of the room conditions. Obviously, the more the air conditioning system is decentralized, the better it is possible to adjust the different characteristic factors which vary from one room to another, but generally the cost of the installation rises in proportion to the decentralization of the air conditioning apparatus.
  • the known local air conditioning apparatus consists of a wooden or metal housing including one heatexchanger fed with hot or cold water, which exchanges the heat with the air passing therethrough under the effect of a fan, included in the same housing, which from here conveys hot or cold air into the room to be heated or cooled respectively.
  • the room temperature can be varied either by modifying the quantity of water flowing through the coils of the heat-exchanger and/or by modifying the air capacity of the fan by acting upon the speed of revolution of the fan.
  • Another object of the invention is to provide a local air conditioning apparatus for a four-pipe system wherein the room temperature can be adjusted by varying the quantity of air which flows through the heatexchangers.
  • a further object of the invention is to provide a local air conditioning apparatus which permits, in each room of a building provided with a four-pipe air conditioning system, a flexible, fast and efficient temperature adjustment with a very simple working and a considerable reduction in costs.
  • a local air conditioning apparatus comprising two heatexchangers and a fan which pushes the air to be conditioned through the heat-exchangers, which are simultaneously fed, the one with cooling fluid and the other with heating fluid, andare housed respectively in two different chambers with an interposed neutral or bypass chamber, and in that the fan has a housing which is shaped so that when the fan outlet is exactly in correspondence of the inlet of one of the three chambers, it closes the inlet of the other chambers, the fan being rotatable so that its outlet can be adjusted in a stepless way to correspond with the inlet of each of the three chambers or bridging two adjacent chambers.
  • the local air conditioning apparatus has the main advantage that its flexibility in working is such that in the same conditioned building, some rooms may be cooled while others are heated.
  • Another advantage of apparatus of the present invention is that its low cost and high efficiency are achieved by avoiding also the presence of passive induced fluid currents in the inactive sections.
  • FIG. 1 shows a diagram of a complete air conditioning system in a multicellular building provided with a local air conditioning apparatus according to this invention
  • FIG. 2 shows a diagrammatic front-view, partly in section, of the local air conditioning apparatus according to this invention.
  • FIG. 3 shows a section-view taken along the line A- A of FIG. 2.
  • FIG. 1 there can be seen a cooler l, which cools the cooling fluid, generally water, circulated by means of pump 2.
  • the heating fluid generally water, which is circulated by means of pump 4, is heated in the generator 3.
  • the full line indicates the circuit of the cooling fluid while the dashed line indicates the circuit of the heating fluid.
  • FIGS. 2 and 3 show more in detail an embodiment of the convector-fan apparatus 5 which is the object of this invention.
  • the air to be conditioned which may be either exclusively air from the room where the apparatus is installed, or a mixture of ambient air and air taken from outside, enters the apparatus 5 through slots 6 and is filtered through the filter 7.
  • the air is sucked off by the fan shown as a centrifugal fan 8, with the fan-wheel 9 and the motor 10.
  • the motor 10 is connected directly to the fan-wheel by the shaft 11, but they can generally be coupled by means of an appropriate gear means.
  • the air-throw outlet 12 of the fan 8 is integral with a housing 13 rotatable around the axle X-X.
  • the housing 13 is opened at its lower part between the generatrixes l4 and 15, in order to make it possible for the air which has crossed the filter 7 to reach the fan system by suction.
  • the whole remaining full surface of the housing 13 is closed except for the slot or slots provided in front of the outlet 12 of the fan 8.
  • Said slot or slots are positioned on the housing surface so that by rotating the housing they can be in a stepless way brought to correspond with the inlets of the chambers 23, 24 and 25, or bridging two adjacent chambers.
  • the motor 10 is supported by a cross-piece 16 with the aid of an elastic cradle 17.
  • an electric motor 10 in FIG. 2, there has been shown an electric motor 10, but the latter may be indifferently a hydraulic engine or any other type of engine. It should be remembered that the cross-piece 16 may be abolished and that the motor 10 may be mounted directly onto the housing 13.
  • Bothvthe housing and the cross-piece 16 are supported by two disks 18 which are free to rotate around the axle X--X embodied by the two pivots 19 housed in the bearings 20 and supported by the lateral supporting and base plates 21, which in turn rest on the floor through the adjustable screws 22.
  • a convector-fan system adapted to rest on the floor has been represented.
  • the apparatus may also be designed to hang vertically from a wall, or horizontally from the ceiling.
  • the fact of fixing the housing 13 and through cross-piece 16 the motor 10 to the two disks 18 makes it possible to cause the whole system composed by the housing 13, the fan 8 with the wheel 9 and the motor 10 to rotate around the axle XX, thus directing the flow of air coming from the outlet 12 into the chambers 23,24 or 25, or in any intermediate position.
  • the flow of air totally enters the chamber 23 so that all the air sucked off by the fan 8 will have to pass before coming out from the outlet 26 through the exchanger 27 crossed by the cooling fluid coming from the refrigerator 1 and circulated by pump 2.
  • the cooling chamber 23 is separated from the neutral or by-pass chamber 24 by a baffle-plate 29 ending at its lower part by the condensate water trap 31, while the battle-plate 30 separates the by-pass chamber 24 from the heating chamber 25, the exchanger 28 being crossed bythe heating fluid coming from the generator 3 and circulated by the pump 4.
  • the outlet 12 of the fan is positioned in FIG. 3 in such a way as to confer to the apparatus 5 the maximum cooling capacity, while the chambers 24 and 25 are closed at their lower part by the housing surface extending at the right hand side of the air-throw outlet 12.
  • the upper connection is preferably provided with an air exhaust device 41 and the water trap 31 is provided with two drains 42 on each side of the apparatus: the drain which is not in service is closed by a plastic cap.
  • the apparatus illustrated in FIGS. 2 and 3 is a basic unit for a vertical arrangement. If a horizontal arrangement is required, the cooling exchanger 27 will have to be housed in the lower part of the apparatus and the panel 34 will have to be replaced by a condensate water trap.
  • the motor operates only one fan-wheel, but in some other cases the motor may operate two fan-wheels through one single gear shaft projecting from both ends of the motor, so that the fan-wheels are arranged symmetrically with respect to a median plane perpendicular to the axis of the motor.
  • the adoption of one or two fan-wheels and, accordingly, of one or two fans, will substantially depend on the air-capacity of the fan-convector. Fans of other kinds can be-also used for some diflerent embodiments of the present invention.
  • a local air conditioning apparatus for installations with a four-pipe system comprising a casing and two heat exchangers within said casing, each exchanger being associated with two of said pipes, the improvement comprising:
  • baffle means within said casing for defining a separate chamber within said casing for each of said heat exchangers and for defining a third chamber therebetween;
  • said means comprising an outlet opening in said housing, an axle supported by said casing, said housing being rotatably mounted on said axle, whereby upon rotation of said housing about said axle said outlet opening of said housing is in air flow alignment with one of said chambers or partially bridging two of said adjacent chambers.
  • a local air conditioning apparatus according to claim 1 wherein said fan means comprises a centrifugal fan.
  • a local air conditioning apparatus according to claim 1 wherein said fan means is integrally connected with said housing.
  • a local air conditioning apparatus wherein said fan means includes a fan and a driving means for said fan and wherein'said driving means is mounted inside said housing.
  • a local air conditioning apparatus according to claim 1 further including rotating means connected to said housing for rotating said housing.
  • a local air conditioning apparatus further including means, connected to said rotating means, for controlling the position of said housing outlet opening as a function of ambient temperature.
  • a local air conditioning apparatus for installations with a four-pipe system comprising a metal case, two heat-exchangers within said case laid out in parallel and mounted in two separate chambers which define a bypass chamber therebetween, a fan adapted to push air through the heat-exchangers by means of an adjustable outlet, said fan having a motor means and a housing providedwith passages for the inlet and the outlet of the air, the outlet passage being placed in correspondence with the fan outlet and integral thereto and having an outlet cross-section coextensive in width with the inlet of at most one of said three chambers, an axle supported by said metal case, said fan housing being rotatably mounted on said axle, each of said chambers of the heat-exchangers being defined by a plurality of fixed walls comprising portions of said metal case, the same heat-exchanger and one of a pair of baffle plates, and by a movable wall which is said fan housing, and said bypass chamber being defined by said pair of baffle plates and the same fan housing, two longitudinal side members being provided for

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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)
  • Central Air Conditioning (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Duct Arrangements (AREA)
US00096784A 1969-12-24 1970-12-10 Local air conditioning apparatus Expired - Lifetime US3708011A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2630269 1969-12-24

Publications (1)

Publication Number Publication Date
US3708011A true US3708011A (en) 1973-01-02

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ID=11219174

Family Applications (1)

Application Number Title Priority Date Filing Date
US00096784A Expired - Lifetime US3708011A (en) 1969-12-24 1970-12-10 Local air conditioning apparatus

Country Status (15)

Country Link
US (1) US3708011A (de)
AT (1) AT308340B (de)
BE (1) BE760857A (de)
CA (1) CA918423A (de)
CS (1) CS151067B2 (de)
DE (1) DE2061892A1 (de)
ES (1) ES195612Y (de)
FR (1) FR2074064A5 (de)
GB (1) GB1328667A (de)
IE (1) IE34817B1 (de)
IL (1) IL35863A (de)
NL (1) NL152656B (de)
SE (1) SE357051B (de)
YU (2) YU313770A (de)
ZA (1) ZA708509B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4018268A (en) * 1972-10-28 1977-04-19 Henrik Kallies Induction air-conditioning apparatus
US6276443B1 (en) * 1999-11-29 2001-08-21 Lendell Martin, Sr. Air conditioning coil
US6725915B2 (en) * 2000-01-20 2004-04-27 Vent-Rite Valve Corp. Method of adjusting room air temperature
US20070044490A1 (en) * 2005-08-24 2007-03-01 Lg Electronics Inc. Method for selectively operating compressors of dual type unitary air conditioner
FR2977005A1 (fr) * 2011-06-22 2012-12-28 Ventilairsec Installation de ventilation a chauffage modulable

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3932647B2 (ja) * 1997-08-11 2007-06-20 株式会社デンソー 空調装置
WO2004070283A1 (en) * 2003-02-07 2004-08-19 A/S Ribe Jernindustri Ventilating aggregate , units, system and methode including units that are easily connectable to other units and safety switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894728A (en) * 1957-02-06 1959-07-14 Trane Co Multi-zone air conditioning unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894728A (en) * 1957-02-06 1959-07-14 Trane Co Multi-zone air conditioning unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4018268A (en) * 1972-10-28 1977-04-19 Henrik Kallies Induction air-conditioning apparatus
US6276443B1 (en) * 1999-11-29 2001-08-21 Lendell Martin, Sr. Air conditioning coil
US6725915B2 (en) * 2000-01-20 2004-04-27 Vent-Rite Valve Corp. Method of adjusting room air temperature
US6742582B1 (en) 2000-01-20 2004-06-01 Vent-Rite Valve Corp. Modular climate control unit
US20070044490A1 (en) * 2005-08-24 2007-03-01 Lg Electronics Inc. Method for selectively operating compressors of dual type unitary air conditioner
FR2977005A1 (fr) * 2011-06-22 2012-12-28 Ventilairsec Installation de ventilation a chauffage modulable

Also Published As

Publication number Publication date
YU33355B (en) 1976-10-31
ZA708509B (en) 1971-09-29
CS151067B2 (de) 1973-09-17
BE760857A (fr) 1971-05-27
IL35863A (en) 1973-11-28
NL7018598A (de) 1971-06-28
ES195612Y (es) 1975-08-01
AT308340B (de) 1973-06-25
SE357051B (de) 1973-06-12
FR2074064A5 (de) 1971-10-01
IL35863A0 (en) 1971-02-25
CA918423A (en) 1973-01-09
IE34817B1 (en) 1975-08-20
YU313770A (en) 1976-04-30
NL152656B (nl) 1977-03-15
GB1328667A (en) 1973-08-30
IE34817L (en) 1971-06-24
DE2061892A1 (de) 1971-07-01
ES195612U (es) 1975-04-01

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