US3685574A - Central heating and cooling system - Google Patents

Central heating and cooling system Download PDF

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Publication number
US3685574A
US3685574A US83888A US3685574DA US3685574A US 3685574 A US3685574 A US 3685574A US 83888 A US83888 A US 83888A US 3685574D A US3685574D A US 3685574DA US 3685574 A US3685574 A US 3685574A
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US
United States
Prior art keywords
heat
point
transfer fluid
temperature exchange
exchange unit
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Expired - Lifetime
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US83888A
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English (en)
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Philippe Worms
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Individual
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Individual
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Publication of US3685574A publication Critical patent/US3685574A/en
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    • 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

Definitions

  • circuits comprise as many branch N 5 1969 S 373 203 conduit lines as there are levels or stages in WhlCh the P utilization points are located, each utilization point comprising a water-air temperature-exchange unit [52] US. Cl ..l65/22, 165/50 having a Single air circuit
  • Each branch line has a [5 llllt. Cl.
  • the invention has for its object a simplified installation which, when applied to a central air-conditioning system, makes it possible to obtain, with a circuit arranged on a basis of two tubes, the same results as those obtained at the present time with four-tube installations.
  • a simplified installation according to the invention comprises two independent circuits of the single-tube type, a cold circuit and a hot circuit.
  • the cold-water circuit is connected to the central production machine and the hot-water circuit is connected to the boiler or boilers (or to the exchanger or exchangers) and their temperature may or may not be automatically'regulated in dependence on the external temperature.
  • each air inductor (convector fan) is divided into two separate circuits as regards the water, but is common with respect to the air circuit.
  • the circulation of the water in each part of the units is effected by means of two electric pumps of appropriate characteristics and small size, preferably incorporated inside the inductor or convector fan, but which may also be housed at a short distance outside the apparatus.
  • each of the circuits is provided with a non-return valve mounted in an appropriate manner.
  • hot water circulates in the corresponding part of the battery under the action of the hot-water pump which is in operation.
  • cold-water circulates in the corresponding portion of the unit by the action of the cold-water pump which is in operation.
  • These pumps may be actuated manually or by means of electric switches, or alternatively by means of thermostatic switches (ambient temperature or return ther- I mostat).
  • the controls of these elements may preferably be combined in such a manner that they can only operate alternatively, the closure of one certain electric circuit necessarily involving the opening of the other, so as to prevent the possibility of simultaneous operation of the cold-water pump and the hot-water pump. It is only in installations located in very damp regions that it is possible to install in combination a thermostat and a humidostat, enabling moisture to be removed from the treated air by their simultaneous operation.
  • FIG. 1 is a diagram of a simplified installation according to the invention
  • FIGS. 2 and 3 are diagrams similar to that of FIG. 1
  • FIG. 1 shows a simplified installation in which the conduit 1 of a closed circuit comes from and returns to the central machine source of cold (not shown), while the conduit 2, also on closed circuit, is connected to the source of heat.
  • the two conduits have a circulation controlled respectively by means of a cold-water pump 3 and a hot-water pump 4.
  • Each of these conduits has as many branch circuits, la and 2a as there are planes or stages in which the points of utilization are located, putting into communication the outgoing and return sections of these branch circuits.
  • Each utilization point comprises a water-air temperature exchange unit 5 which includes a single air circuit which is cooled or heated, depending on whether it operates on a cold-water circuit or on a hot-water circuit.
  • the first circuit is supplied by the corresponding branch circuit la, and forces the circulation by means of a small pump 6 which causes it to pass through the unit 5 and returns it through a non-return valve 7' in counter-flow to the above-mentioned branch circuit la.
  • the second circuit is supplied by the branch circuit 20 and is provided with the same elements: pump 6 and non-return valve 7.
  • the pumps 3 and 4 of the general installation and the pumps 6 of each utilization point each have their particular motor, following the diagram shown in FIG. 1, and, as has been previously stated, these motors can be put into service by means of independent switches or preferably by means of change-over switching devices which connect the hot-water pump while disconnecting the cold-water pump and vice-versa.
  • each pair of pumps 8 is actuated by a single motor 9, arranged axially between the two.
  • the pumps should not be reversible or that they do mot produce the slightest displacement of water when they rotate in the direction opposite to the normal direction of operation.
  • the pump 8 is put into service, corresponding to the hot or cold circuit which is desired.
  • the two pumps 8 can be actuated by the driving motor of the two fans of the fan-convector.
  • the change in operation is also effected by reversing the direction of working of the motor, and account must be taken of the fact that it is not a disadvantage for the heating condition that the fan or fans of the fan-convector rotate in the reverse direction, but an advantage due to the factthat, in this case, theflowrate .of the fans being reduced when they rotate in reverse, the outgoing temperature of the air is higher on the heating condition, the number of calories dissipated remaining practically constant.
  • the water circulation at the utilization points is effected by means of a single reversible motorized pump unit set 10, in which each of the circuits (hot and cold) is interposed between two non-retum valves 7, correctly situated, so that, depending on its direction of rotation, it sends the hot water to the battery while at the same time stopping the circulation of cold water and conversely.
  • a central heating and cooling system comprising separate heating and cooling circuits, said heating circuit including a first main conduit means connected to a central heating source for circulating a first heattransfer fluid, said cooling circuit including a main contransfer fluids through the branch lines when their associated pumps are not in operation.
  • each temperature exchange unit of said heating circuit is 5 exchange unit.
  • a single reversible motorized pump unit for circulating heat-transfer fluid through the branch lines of each :combined temperature exchange unit, and means.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
US83888A 1969-11-05 1970-10-26 Central heating and cooling system Expired - Lifetime US3685574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES373203A ES373203A1 (es) 1969-11-05 1969-11-05 Instalacion simplificada para sistemas de acondicionamientode aire centralizados.

Publications (1)

Publication Number Publication Date
US3685574A true US3685574A (en) 1972-08-22

Family

ID=8454242

Family Applications (1)

Application Number Title Priority Date Filing Date
US83888A Expired - Lifetime US3685574A (en) 1969-11-05 1970-10-26 Central heating and cooling system

Country Status (6)

Country Link
US (1) US3685574A (fr)
BE (1) BE754253A (fr)
DE (1) DE2041641A1 (fr)
ES (1) ES373203A1 (fr)
FR (1) FR2071618A5 (fr)
OA (1) OA03506A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910345A (en) * 1974-04-22 1975-10-07 James J Whalen Heating and cooling system
US20040112584A1 (en) * 2002-12-17 2004-06-17 Kuo-Liang Weng controlling method for the discharge of coolant medium in the heat exchange wind box
US20060071022A1 (en) * 2002-11-04 2006-04-06 Graco Minnesota Inc. Fast set material proportioner
US20120181009A1 (en) * 2007-05-01 2012-07-19 Blecker Joseph G Automatic Switching Two Pipe Hydronic System
US20130199772A1 (en) * 2012-02-02 2013-08-08 Semco Llc Chilled beam pump module, system, and method
US20160003489A1 (en) * 2013-03-04 2016-01-07 Johnson Controls Technology Company Outside air handling unit
US10408472B1 (en) * 2010-04-20 2019-09-10 Climacool Corp. Modular chiller unit with dedicated cooling and heating fluid circuits and system comprising a plurality of such units
US10900675B2 (en) 2012-12-03 2021-01-26 Waterfurnace International, Inc. Method of operating a heating and cooling system
US11747030B2 (en) 2021-03-12 2023-09-05 Semco Llc Multi-zone chilled beam system and method with pump module
US12044421B2 (en) 2016-06-08 2024-07-23 Semco Llc Air conditioning with recovery wheel, dehumidification wheel, cooling coil, and secondary direct-expansion circuit
US12287145B2 (en) * 2020-03-13 2025-04-29 Air Products And Chemicals, Inc. Heat exchanger apparatus, manifold arrangement for a heat exchanger apparatus, and methods relating to same
US12578124B2 (en) 2018-08-29 2026-03-17 Waterfurnace International, Inc. Integrated demand water heating using a capacity modulated heat pump with desuperheater

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492757A (en) * 1945-07-26 1949-12-27 Carrier Corp Air-conditioning system
US2557035A (en) * 1947-07-21 1951-06-12 Arthur J Lichty Room heating and cooling unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492757A (en) * 1945-07-26 1949-12-27 Carrier Corp Air-conditioning system
US2557035A (en) * 1947-07-21 1951-06-12 Arthur J Lichty Room heating and cooling unit

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910345A (en) * 1974-04-22 1975-10-07 James J Whalen Heating and cooling system
US20060071022A1 (en) * 2002-11-04 2006-04-06 Graco Minnesota Inc. Fast set material proportioner
US8568104B2 (en) 2002-11-04 2013-10-29 Graco Minnesota Inc. Fast set material proportioner
US20040112584A1 (en) * 2002-12-17 2004-06-17 Kuo-Liang Weng controlling method for the discharge of coolant medium in the heat exchange wind box
US6945324B2 (en) * 2002-12-17 2005-09-20 Cohand Technology Co., Ltd. Controlling method for the discharge of coolant medium in the heat exchange wind box
US20120181009A1 (en) * 2007-05-01 2012-07-19 Blecker Joseph G Automatic Switching Two Pipe Hydronic System
US8397799B2 (en) * 2007-05-01 2013-03-19 Joseph G. Blecker Automatic switching two pipe hydronic system
US10408472B1 (en) * 2010-04-20 2019-09-10 Climacool Corp. Modular chiller unit with dedicated cooling and heating fluid circuits and system comprising a plurality of such units
US9625222B2 (en) * 2012-02-02 2017-04-18 Semco Llc Chilled beam pump module, system, and method
US11092347B2 (en) 2012-02-02 2021-08-17 Semco Llc Chilled beam module, system, and method
US20130199772A1 (en) * 2012-02-02 2013-08-08 Semco Llc Chilled beam pump module, system, and method
US10060638B2 (en) 2012-02-02 2018-08-28 Semco Llc Chilled beam pump module, system, and method
US10900675B2 (en) 2012-12-03 2021-01-26 Waterfurnace International, Inc. Method of operating a heating and cooling system
US11713890B2 (en) 2012-12-03 2023-08-01 Waterfurnace International, Inc. Method of operating a heating and cooling system
US12117200B2 (en) 2012-12-03 2024-10-15 Waterfurnace International, Inc. Conduit module coupled with heating or cooling module
US20160003489A1 (en) * 2013-03-04 2016-01-07 Johnson Controls Technology Company Outside air handling unit
US11079122B2 (en) * 2013-03-04 2021-08-03 Johnson Controls Technology Company Modular liquid based heating and cooling system
US20160003561A1 (en) * 2013-03-04 2016-01-07 Johnson Controls Technology Company A modular liquid based heating and cooling system
US11118799B2 (en) * 2013-03-04 2021-09-14 Johnson Controls Technology Company Outside air handling unit
US12044421B2 (en) 2016-06-08 2024-07-23 Semco Llc Air conditioning with recovery wheel, dehumidification wheel, cooling coil, and secondary direct-expansion circuit
US12578124B2 (en) 2018-08-29 2026-03-17 Waterfurnace International, Inc. Integrated demand water heating using a capacity modulated heat pump with desuperheater
US12287145B2 (en) * 2020-03-13 2025-04-29 Air Products And Chemicals, Inc. Heat exchanger apparatus, manifold arrangement for a heat exchanger apparatus, and methods relating to same
US11747030B2 (en) 2021-03-12 2023-09-05 Semco Llc Multi-zone chilled beam system and method with pump module

Also Published As

Publication number Publication date
BE754253A (fr) 1970-12-31
FR2071618A5 (fr) 1971-09-17
OA03506A (fr) 1971-03-30
DE2041641A1 (de) 1971-05-13
ES373203A1 (es) 1972-01-01

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