EP0468318A2 - Système monobloc de refroidissement et de chauffage - Google Patents
Système monobloc de refroidissement et de chauffage Download PDFInfo
- Publication number
- EP0468318A2 EP0468318A2 EP91111669A EP91111669A EP0468318A2 EP 0468318 A2 EP0468318 A2 EP 0468318A2 EP 91111669 A EP91111669 A EP 91111669A EP 91111669 A EP91111669 A EP 91111669A EP 0468318 A2 EP0468318 A2 EP 0468318A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- water
- cooling
- elements
- monobloc
- 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.)
- Withdrawn
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
Definitions
- the present invention generally relates to room heating and cooling systems and, more particularly, to an improved system of this kind.
- each system has the own regulation and the switching from the heating mode of operation to the cooling mode of operation or viceversa occurs by hand, after the shut-down of one of the two systems.
- This invention aims at providing a monobloc heating and cooling system which obviates the above mentioned disadvantages.
- Another object of the present invention is to provide a monobloc heating and cooling system permitting the use of the same heat exchange elements as those located in the rooms to be heated and conditioned in each of two operating modes.
- Still another object of the present invention is to provide a monobloc heating and coolig system of a very semplified kind and requiring only a hydraulic circuit both for the heating mode of operation and for the cooling mode of operation.
- a further object of the present invention is to provide a monobloc heating and cooling system which permits an automatic switching from one operating mode to the other operating mode.
- the room heating and cooling system comprises a water refrigerating unit, a water heating unit, if necessary a water heater for the sanitary appliances, circulation pumps, safety and control means and heating and cooling elements and is characterized in that
- said manifolds are connected to the single block and to the heating and cooling elements by means of two pipes only, one pipe for delivering the heating and cooling medium and the other pipe for returning it.
- the cooling elements are provided with shutter means for operating only a portion thereof, when they are acting as heating elements.
- the manifolds are connected in groups of two and one manifold of each group has a temperature control valve of the cooling elements so as to maintain this temperature low when they are acting as heating elements and automatically control the temperature according to the thermal load.
- radiators as heating elements and fancoils as cooling and heating elements, respectively can be used for the rooms that are to be only heated or cooled and heated, respectively.
- the monobloc heating and cooling system essentially comprises a refrigerated water generating unit or refrigerating unit A, a hot water generating unit or boiler B, a water heater C for the sanitary appliances and manifolds D of special design.
- the refrigerating unit A conventionally comprises a compressor 1, a condenser 2 provided with fan 3, a laminating element 4 and an evaporator 5.
- the evaporator 5 has an inlet 6, an outlet 7 for the circulating water.
- the outlet 7 is connected to a refrigerated water accumulator 8.
- the hot water generating unit B comprises a gas boiler 10 provided with burners 11 supplied by a gas source G through a gas valve 12.
- the water heater C comprises a tank 13 connected to a water supply and containing a coil 14 in which the hot water coming from the gas boiler 10 circulates and which heats the water supplied thereto.
- the manifolds D are formed of two separate sections 20 and 21 connected to each other through an ON-OFF valve V. They have a single inlet E which is to be connected to the hot water delivery of the boiler 10 or the cold water delivery of the accumulator 8. Both outlets are connected to the users, i.e. the heating elements and the cooling elements, for example the outlet U1 of the manifold section 20 is connected to a fancoil and the outlet U1 of the manifold section 21 is connected to a heat radiator and the outlets U2 are connected to another heat radiator and another fancoil. Although only two outlets have been shown for semplicity, it should be apparent that the outlet number is depending on the number of users provided in the system.
- the refrigerated water flowing from the accumulator 8 is circulated by a circulation pump P1 through the pipe 9 and then, through the pipe 17 in which an one-way valve V1 is located, is supplied to the inlet E of the section 20 of the manifold D.
- the outlet U1 of the manifold D is connected, through the pipe 18, to the fancoil 15, the outlet of which is connected, through a pipe 19, to a return manifold 22.
- the outlet U1 of the section 21 of the manifold D is connected, through a pipe 23, to the heat radiator 16, the outlet of which is also connected, through a pipe 24, to the return manifold 22.
- the return manifold 22 returns, through the pipe 25, the circulating water to the inlet 6 of the evaporator 5 in order that this water is again refrigerated at the correct outlet temperature.
- the hot water coming from the boiler 10 is circulated by the circulation pump P2, through the pipe 26 in the water heater C.
- the hot water flows then through the coil 14 and returns to the boiler 10 through a three-way valve V2.
- the hot water is also delivered by the circulation pump P2, through an one-way valve V3, to the pipe 17 leading to the manifolds D.
- the pipe 25 from the return manifold 22 can be communicated with the boiler 10 through the three-way valve V2.
- an expansion tank 27 is provided in the return pipe 25 in the return pipe 25.
- the circulation pump P1 is inoperative and the boiler 10 delivers the hot water generated thereby through the circulation pump P2, the one-way valve V3, the pipe 17, to the section 20 of manifold D, the ON-OFF valve V of which is now in open position, so that the hot water enters the manifold section 20 through the single inlet E and flowing from the outlet U1, is supplied to the fancoil 15 through the pipe 18. Because the ON-OFF valve V is open, the hot water enters also the section 21 of the manifold D and flowing from the outlet U1 is supplied, through the pipe 23, to the heat radiator 16.
- the water flowing from the fancoil 15 and the water flowing from the heat radiator 16 is supplied to the return manifold 22 which returns it, through the pipe 25, to the boiler 10, through the three-way valve V2 which communicates now the boiler 10 to the return pipe 25.
- the hot water can flow also in the water heater C and is returned to the boiler 10 through the three-way valve V2 which, when necessary, is automatically switched to communicate also the water heater C with the boiler 10.
- the boiler operates for preparing the hot water for the sanitary appliances, but it is excluded from the hydraulic circuit to the users by switching the three-way valve V2, so that the latter communicates only the water heater with the boiler.
- the circulation pump P1 is made operative and therefore the refrigerated water contained in the accumulator 8 is supplied through the one-way valve 1 to the section 20 of the manifold D, whereas the manifold section 21 is excluded by closing the ON-OFF valve V.
- the refrigerated water flows from the outlet U1 of the section 20 of the manifold D and, through the pipe 18, is supplied to the fancoil 15 from which it flows in order to be supplied to the return manifold 22 through the pipe 19. From the return manifold 22 the water which has exchanged its refrigeration contents with the environment,is returned through to the pipe 25 to the inlet 6 of the evaporator 5 of the refrigerating unit A.
- a single hydraulic circuit is employed. It comprises two pipes one of which, namely the pipe 17, is directed to the manifold D and the other of which, namely the pipe 25, returns the circulating water to the hot water generating unit B and to the refrigerating unit A, respectively. Also the users are arranged in a single hydraulic circuit leading to manifolds D.
- Fig. 2 there is diagrammatically shown a circuit to be employed in the system according to the present invention in the heating mode of operation with high temperature of the hot water. Also in this case, all the rooms to be heated are provided with a heat radiator and the rooms to be conditioned are provided with a fancoil.
- the hot water at the temperature of about 80 C coming from the boiler 10 and circulated by the circulation pump P2 enters, through the single inlet E, the section 20 of the manifold D and through the outlet U1 of the manifold section 20, flows in the fancoil 15 at this high temperature.
- the ON-OFF valve V is open and the hot water at a temperature of 80 C enters also the section 21 of the manifold D and through the outlet U1, flows in the radiator 16 for heating the rooms not provided with a fancoil.
- a two-circuit battery 28 is provided and in the pipe 18 a shutter V4 is arranged the function of which is to permit the flow of the hot water through one circuit 30 of the two circuit battery 28, thereby excluding the other circuit 31.
- the water circulating in the fancoil 15 is cooled so as to impart to the air flowing from the fancoil a not too high temperature, but sufficient to heat the room environment.
- the ON-OFF valve V of the manifold D is turned off so as to exclude the manifold section 21 and the refrigerated water coming from the pipe 17 is supplied in the fancoil 15, which, in this case, has the shutter V4 open so as to supply both the circuit 31 and the circuit 30 so as to operate all the battery 28.
- Fig. 3 there is diagrammatically shown a circuit intended to be employed in the system according to the present invention in the heating operating mode with low temperature of the hot water.
- all the rooms to be heated are provided with heat radiators, whereas the rooms to be also conditioned are provided with fancoils.
- an integrated manifold (high-low temperature) designated by C1 is provided, which comprises two parallel arranged manifolds D one of which, namely the manifold D1, is provided with the ON-OFF valve V and the other of which, namely the manifold D2, is provided with a thermostatic valve VT for regulating the temperature of the fancoil 15.
- the inlets E of the sections 20 of the manifolds D1,D2 are connected to each other by a pipe 32 in which a circulation pump P3 for the low temperature elements is inserted.
- the ON-OFF valve V is open so that the water at a temperature of 80 C entering through the inlet 33 of the section 20 of the manifold D1 flows through the manifold section 21 and is supplied, through the pipe 34, to the heat radiator 16 and the less hot water flowing therefrom enters the section 21 of the manifold D2 through the pipe 35 and is returned to the boiler through the pipe 25.
- the water in the section 20 of the first manifold D1 after being mixed with the water coming from the pipe 32, is supplied to the fancoil 15 through the pipe 36 from which is then supplied to the section 20 of the second manifold D2 and circulated by the pump P3 continuously in the fancoil 15 through the pipes 32 and 36.
- the control thermostatic valve VT is controlled according to the temperature in the section 20 of the second manifold D2 and has the function of maintaining low the hot water temperature supplied to the fancoils and of automatically controlling it according to the thermal load.
- the monobloc heating and cooling system permits both the heating elements and the cooling elements to be supplied by means of two pipes only, which extend from the refrigerated water and the hot water generating units to the special manifolds and from here, always by means of two pipes, to the users.
- the generating units are grouped in a single block which can include also the control and regulation elements arranged in a center unit and this single block can be arranged outdoor, if desired.
- valves can be controlled by hand or automatically by the center unit provided in the single block and also the switching from the heating operate mode to the cooling operate mode can be automatically controlled.
- manifolds can have a configuration different from that illustrated provided they operate in the described manner.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2110190 | 1990-07-27 | ||
| IT02110190A IT1246171B (it) | 1990-07-27 | 1990-07-27 | Impianto di riscaldamento e raffreddamento monoblocco |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0468318A2 true EP0468318A2 (fr) | 1992-01-29 |
| EP0468318A3 EP0468318A3 (en) | 1992-11-19 |
Family
ID=11176765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19910111669 Withdrawn EP0468318A3 (en) | 1990-07-27 | 1991-07-12 | Monobloc heating and cooling system |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0468318A3 (fr) |
| IT (1) | IT1246171B (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1420214A1 (fr) * | 2002-11-12 | 2004-05-19 | AERMEC S.p.A. | Système pour conditionner des locaux |
| EP1441183A1 (fr) * | 2003-01-27 | 2004-07-28 | Tecnocasa S.R.L. | Dispositif éléctronique-hydrolique pour pompe à chaleur |
| EP2103885A1 (fr) * | 2008-03-20 | 2009-09-23 | Daikin Industries, Ltd. | Unité intérieure pour refroidissement de salle ou refroidissement de salle combinée et installation de chauffage combinés |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2121625A (en) * | 1936-11-17 | 1938-06-21 | Gen Electric | Heating and cooling system |
| US2984460A (en) * | 1956-05-21 | 1961-05-16 | Bell & Gossett Co | Combined heating and cooling system |
| US4798240A (en) * | 1985-03-18 | 1989-01-17 | Gas Research Institute | Integrated space heating, air conditioning and potable water heating appliance |
-
1990
- 1990-07-27 IT IT02110190A patent/IT1246171B/it active IP Right Grant
-
1991
- 1991-07-12 EP EP19910111669 patent/EP0468318A3/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1420214A1 (fr) * | 2002-11-12 | 2004-05-19 | AERMEC S.p.A. | Système pour conditionner des locaux |
| EP1441183A1 (fr) * | 2003-01-27 | 2004-07-28 | Tecnocasa S.R.L. | Dispositif éléctronique-hydrolique pour pompe à chaleur |
| EP2103885A1 (fr) * | 2008-03-20 | 2009-09-23 | Daikin Industries, Ltd. | Unité intérieure pour refroidissement de salle ou refroidissement de salle combinée et installation de chauffage combinés |
Also Published As
| Publication number | Publication date |
|---|---|
| IT9021101A0 (it) | 1990-07-27 |
| EP0468318A3 (en) | 1992-11-19 |
| IT1246171B (it) | 1994-11-16 |
| IT9021101A1 (it) | 1992-01-27 |
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| 18D | Application deemed to be withdrawn |
Effective date: 19930520 |