US3166121A - Space heat exchange unit - Google Patents
Space heat exchange unit Download PDFInfo
- Publication number
- US3166121A US3166121A US171930A US17193062A US3166121A US 3166121 A US3166121 A US 3166121A US 171930 A US171930 A US 171930A US 17193062 A US17193062 A US 17193062A US 3166121 A US3166121 A US 3166121A
- Authority
- US
- United States
- Prior art keywords
- heat exchange
- exchange unit
- space heat
- temperature
- tube
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to 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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
Definitions
- the heat exchanging surface for a given cooling load must be large, as the temperature of the cooling medium cannot be substantially lower than the temperature of the ventilating air or condensation will occur in the heat exchanger. If the same heat exchanger element is to be utilized for heating'which is more and more usual in present practicethe quantity of heating medium must be considerably less than the cooling medium if excess capacity is to be avoided, or alternatively the temperature of the heating medium in relation to that of the ventilating air must be limited. Both these alternatives involve a complication of the system and, in addition, have the disadvantage of a divergence from the ideal value (quantity or temperature of medium) and a substantial eviation from the desired capacity. It is an object of the present invention to eliminate these difiiculties and disadvantages by means of a construction in which the surface utilized for heat exchanging is reduced on changeover from cooling to heating.
- the invention is characterized by the arrangement that the heat exchangers of the room units are equipped with a change-over valve, by means of which the cooling or heating medium can be caused to fiowthrough a part of or through the whole heat exchanger.
- the change-over valve according to a suitable embodiment is constructed to cause the medium to flow through a part of the heat exchanger only, when medium at a temperature approximately equal to one temperature level is circulated, and through the heat exchanger as a whole, when medium at a temperature approximatelyequal to the other temperature level is caused to circulate through theheat exchanger.
- FIG. 1 is a schematic view of a fluid heat exchange tube system embodying the invention
- FIG. 2 is an enlarged view, partly in section, of a bypass tube controlling valve shown in FIG. 1.
- 1 designates the inlet and 2 the outlet of a tubular element 3 arranged in serpentine coils.
- this is constructed as an element in which the serpentine part is in the form of a number of coils arranged beside each other.
- 4 designates a three-way valve fitted in one of the coils and connected to the other part of the element by means of a by-pass line 5.
- the valve When the valve is set for straight through flow, the medium passes through the whole element, whilst the second position of the valve causes it to pass from the first coil of the element via the by-pass line to the last'coil of the element, i.e. to flow through only a small part of the element.
- the three-way valve is automatic and is fitted with an actuating motor 6 which is controlled by a temperature sensing element 7 inserted in the inlet of the element;
- a space heat exchange unit comprising a heat exchange fluid conducting tube having an inlet end, and outlet end, and an extended loop length'in series between the inlet and outlet ends and having adjacent passes near the inlet and outlet ends, a by-pass tube arranged between said adjacent passes and communieating therewith in a position to short out a certain portion or" the total heat exchange tube length and leave in a shortened length of the heat exchange tube, a three-way by-pass valve located at the junction of said by-pass tube and one of said passes, said by-pass valve being formed and arranged to open the full length of the heat exchange tube to the flow of heat exchange fluid therethrough and fully close said by-passttube, when a cooling medium is supplied to the heat exchange unit, or to fully close said certain portion of the heat exchange tube and open said by pass tube for the flow of heat exchange fiuid therethrough and through said shortened length of heat exchange tube, when a heating medium is supplied to the heat exchange unit, and means located at the inlet end of'said tube and responsive to the temperature of the
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Central Air Conditioning (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Greenhouses (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL121460D NL121460C (fr) | 1961-01-27 | ||
DEA39426A DE1231871B (de) | 1961-01-27 | 1962-01-23 | Verfahren und Vorrichtung zur Belueftung von Raeumen |
GB2695/62A GB998025A (en) | 1961-01-27 | 1962-01-24 | Ventilating plant with room heating or cooling units |
CH99362A CH378495A (fr) | 1961-01-27 | 1962-01-26 | Installation de chauffage ou de refroidissement d'air |
FR886051A FR1312802A (fr) | 1961-01-27 | 1962-01-26 | Installation de ventilation comprenant des appareils individuels dans chaque pièce |
US171930A US3166121A (en) | 1961-01-27 | 1962-02-08 | Space heat exchange unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE81961 | 1961-01-27 | ||
US171930A US3166121A (en) | 1961-01-27 | 1962-02-08 | Space heat exchange unit |
Publications (1)
Publication Number | Publication Date |
---|---|
US3166121A true US3166121A (en) | 1965-01-19 |
Family
ID=26654185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US171930A Expired - Lifetime US3166121A (en) | 1961-01-27 | 1962-02-08 | Space heat exchange unit |
Country Status (6)
Country | Link |
---|---|
US (1) | US3166121A (fr) |
CH (1) | CH378495A (fr) |
DE (1) | DE1231871B (fr) |
FR (1) | FR1312802A (fr) |
GB (1) | GB998025A (fr) |
NL (1) | NL121460C (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3255818A (en) * | 1964-03-09 | 1966-06-14 | Gen Motors Corp | Involute plate heat exchanger |
US4830275A (en) * | 1987-08-22 | 1989-05-16 | Rli Byggdata Ab | Temperature control of buildings |
US11501279B2 (en) | 2014-09-26 | 2022-11-15 | Block, Inc. | Appointment and payment handling |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5212965A (en) * | 1991-09-23 | 1993-05-25 | Chander Datta | Evaporator with integral liquid sub-cooling and refrigeration system therefor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2337789A (en) * | 1941-06-07 | 1943-12-28 | Westinghouse Air Brake Co | Cooling device |
US2357706A (en) * | 1942-06-29 | 1944-09-05 | Rca Corp | Heating and cooling system |
US2739792A (en) * | 1952-11-18 | 1956-03-27 | York Corp | Air conditioning systems using heat exchangers local to the conditioned space |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB284965A (en) * | 1927-10-14 | 1928-02-09 | Carrier Engineering Co Ltd | Improvements in and relating to the ventilation of enclosures |
US2581744A (en) * | 1949-06-02 | 1952-01-08 | William G Zimmerman | Heating and cooling air conditioning system |
GB843880A (en) * | 1957-05-02 | 1960-08-10 | Carrier Engineering Co Ltd | Improvements in or relating to air-conditioning systems |
-
0
- NL NL121460D patent/NL121460C/xx active
-
1962
- 1962-01-23 DE DEA39426A patent/DE1231871B/de active Pending
- 1962-01-24 GB GB2695/62A patent/GB998025A/en not_active Expired
- 1962-01-26 FR FR886051A patent/FR1312802A/fr not_active Expired
- 1962-01-26 CH CH99362A patent/CH378495A/fr unknown
- 1962-02-08 US US171930A patent/US3166121A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2337789A (en) * | 1941-06-07 | 1943-12-28 | Westinghouse Air Brake Co | Cooling device |
US2357706A (en) * | 1942-06-29 | 1944-09-05 | Rca Corp | Heating and cooling system |
US2739792A (en) * | 1952-11-18 | 1956-03-27 | York Corp | Air conditioning systems using heat exchangers local to the conditioned space |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3255818A (en) * | 1964-03-09 | 1966-06-14 | Gen Motors Corp | Involute plate heat exchanger |
US4830275A (en) * | 1987-08-22 | 1989-05-16 | Rli Byggdata Ab | Temperature control of buildings |
US11501279B2 (en) | 2014-09-26 | 2022-11-15 | Block, Inc. | Appointment and payment handling |
Also Published As
Publication number | Publication date |
---|---|
FR1312802A (fr) | 1962-12-21 |
NL121460C (fr) | |
GB998025A (en) | 1965-07-14 |
CH378495A (fr) | 1964-06-15 |
DE1231871B (de) | 1967-01-05 |
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