CA998251A - Freeze protection device in heat pump system - Google Patents

Freeze protection device in heat pump system

Info

Publication number
CA998251A
CA998251A CA220,934A CA220934A CA998251A CA 998251 A CA998251 A CA 998251A CA 220934 A CA220934 A CA 220934A CA 998251 A CA998251 A CA 998251A
Authority
CA
Canada
Prior art keywords
heat pump
protection device
pump system
freeze protection
freeze
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
Application number
CA220,934A
Other languages
English (en)
Other versions
CA220934S (en
Inventor
Stephen W. Trelease
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American Air Filter Co Inc
Original Assignee
American Air Filter Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US05/478,530 external-priority patent/US4171621A/en
Application filed by American Air Filter Co Inc filed Critical American Air Filter Co Inc
Application granted granted Critical
Publication of CA998251A publication Critical patent/CA998251A/en
Expired legal-status Critical Current

Links

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
    • F24F3/001—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 in which the air treatment in the central station takes place by means of a heat-pump or by means of a reversible cycle
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
CA220,934A 1974-06-12 1975-02-24 Freeze protection device in heat pump system Expired CA998251A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/478,530 US4171621A (en) 1973-03-21 1974-06-12 Freeze protection device in heat pump system

Publications (1)

Publication Number Publication Date
CA998251A true CA998251A (en) 1976-10-12

Family

ID=23900313

Family Applications (1)

Application Number Title Priority Date Filing Date
CA220,934A Expired CA998251A (en) 1974-06-12 1975-02-24 Freeze protection device in heat pump system

Country Status (11)

Country Link
BE (1) BE827216A (fr)
BR (1) BR7503691A (fr)
CA (1) CA998251A (fr)
DD (1) DD118167A5 (fr)
DE (1) DE2513455A1 (fr)
DK (1) DK263475A (fr)
ES (1) ES435692A1 (fr)
FR (1) FR2280032A2 (fr)
GB (1) GB1457732A (fr)
IT (1) IT1033195B (fr)
SE (1) SE7504113L (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1214855B (it) * 1984-03-13 1990-01-18 Raif Spa Circuito refrigerante per il trattamento di liquidi, utilizzante un evaporatore-scambiatore a elementi concentrici entro i quali i rispettivi fluidi si muovono in senso contrario uno all'altro, nel modo detto controcorrente.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2136813A (en) * 1935-09-12 1938-11-15 Dewey H Dolison Liquid cooler control
US3404728A (en) * 1966-04-08 1968-10-08 Singer Co Air conditioning system
GB1307604A (en) * 1970-03-05 1973-02-21 Temperature Ltd Heat pumps units

Also Published As

Publication number Publication date
BR7503691A (pt) 1976-06-29
DD118167A5 (fr) 1976-02-12
IT1033195B (it) 1979-07-10
FR2280032A2 (fr) 1976-02-20
DK263475A (da) 1975-12-13
BE827216A (fr) 1975-07-16
ES435692A1 (es) 1976-12-01
DE2513455A1 (de) 1976-01-02
FR2280032B2 (fr) 1979-01-19
GB1457732A (en) 1976-12-08
SE7504113L (sv) 1975-12-15

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