US3848664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating/cooling apparatus
Assignee: Kins Developments Ltd
•
Filing: 1972-06-23
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Granted: 1974-11-19
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Expires: 1992-06-23
Abstract
Abstract Heating/cooling apparatus includes a heating circuit for recirculating heated fluid to a heating device, a cooling circuit for re-circulating cooled fluid to a cooling device, the flow path in the cooling circuit being separate from the flow path in the heating circuit, refrigeration unit for cooling the cooled fluid and heating the heated fluid, first heat exchanger selectively operable for removing unwanted heat from the heating circuit when not required by the heating device, and second heat exchanger selectively operable for adding heat to the fluid in the cooling circuit when insufficient heat is added at the cooling device.
Inventors
- 👤 E Perry
- 👤 P Moumouloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:21
CPC Classifications
F; F25; F25B; F25B29/00; F24; F24F; F24F3/00; F24F3/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
109 words
Heating and cooling apparatus including a heating device, a heating circuit for recirculating heated fluid to the heating device, a cooling device, a cooling circuit for recirculating cooled fluid to the cooling device, the flow path in the cooling circuit being separate from the flow path in the heating circuit, refrigeration means for cooling the cooled fluid and heating the heated fluid, first heat exchange means selectively operable for removing unwanted heat from the heating circuit when not required by the heating device, and second heat exchange means selectively operable for adding heat to the fluid in the cooling circuit when insufficient heat Is added at the cooling device.
Claim 2
Dependent Claim
109 words
Heating and cooling apparatus including a heating device, a heating circuit for recirculating heated fluid to the heating device, a cooling device, a cooling circuit for recirculating cooled fluid to the cooling device, the flow path in the cooling circuit being separate from the flow path in the heating circuit, refrigeration means for cooling the cooled fluid and heating the heated fluid, first heat exchange means selectively operable for removing unwanted heat from the heating circuit when not required by the heating device, and second heat exchange means selectively operable for adding heat to the fluid in the cooling circuit when insufficient heat Is added at the cooling device.
Claim 3
Dependent Claim
69 words
Heating/cooling apparatus as claimed in claim 1 in which the means for adding heat to the fluid in the cooling circuit is controlled by a temperature sensitive device in part of the heating circuit so that the temperature of the cooled fluid returning to the refrigeration means may be raised when the temperature of the heated fluid in that part of the heating circuit falls below a required level.
Claim 4
Dependent Claim
40 words
Heating/cooling apparatus as claimed in claim 1 in which the means for removing heat from the heating circuit and means for adding heat to the cooling circuit each comprise a heat exchange device through which flows a heat sink fluid.
Claim 5
Dependent Claim
38 words
Heating and cooling apparatus as claimed in claim 3 further including a heat sink circuit for said heat sink fluid, the heat exchange devices for both the heating and cooling circuits being connected to said heat sink circuit.
Claim 6
Dependent Claim
17 words
Heating/cooling apparatus as claimed in claim 4 in which the fluid used in each circuit is water.
Claim 7
Dependent Claim
46 words
Heating/cooling apparatus as claimed in claim 1 in which the heating circuit and cooling circuit each include two parallel paths, the heating or cooling device being provided in one path and the means for removing or adding heat being arranged to operate on the parallel path.
Claim 8
Dependent Claim
57 words
Heating/cooling apparatus as claimed in claim 6 in which valve means is provided for adjusting the flow rates through each said one path to control the heating or cooling effected by the heating device and cooling device, and valve means is provided in each said parallel path and controlled by a pressure controller in said one path.
Claim 9
Dependent Claim
36 words
Heating/cooling apparatus as claimed in claim 1 in which the refrigeration means includes a closed loop of recycled refrigerant passing through a condenser coupled to the heating circuit and an evaporator coupled to the cooling circuit.
Claim 10
Dependent Claim
31 words
Heating/cooling apparatus as claimed in claim 2 in which the setting of the temperature sensitive device in the heating circuit is adjustable to alter the condensing temperature within the refrigerant cycle.
Claim 11
Dependent Claim
34 words
Heating/cooling apparatus as claimed in claim 4 in which the refrigerant is cooled on passing from the condenser to the evaporator by a heat exchange device through which the said heat sink fluid passes.
Claim 12
Dependent Claim
35 words
Heating/cooling apparatus as claimed in claim 8 in which a plurality of selectively operable refrigeration means are coupled in parallel to the heating and cooling circuits for adjusting the duty of the air conditioning apparatus.
Claim 13
Dependent Claim
65 words
Heating/cooling apparatus as claimed in claim 11 in which the compressors for each refrigerant cycle can be selectively switched off, and a separate pump for cycling the cooling fluid is provided for each evaporator so that when any compressor is switched off to reduce the duty, the pump of the associated evaporator is also switched off to stop flow of cooling fluid through the evaporator.
Claim 14
Dependent Claim
24 words
Air conditioning apparatus comprising heating/cooling apparatus as claimed in claim 1 arranged so that air may flow over the said heating and cooling devices.
References Cited (Backward Citations)
US2492757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |