FR2258546A1 - Double pump unit for central heating - blocks return flow when one pump of two parallel pumps stops - Google Patents

Double pump unit for central heating - blocks return flow when one pump of two parallel pumps stops

Info

Publication number
FR2258546A1
FR2258546A1 FR7403150A FR7403150A FR2258546A1 FR 2258546 A1 FR2258546 A1 FR 2258546A1 FR 7403150 A FR7403150 A FR 7403150A FR 7403150 A FR7403150 A FR 7403150A FR 2258546 A1 FR2258546 A1 FR 2258546A1
Authority
FR
France
Prior art keywords
pump
central heating
return flow
pump unit
collector chamber
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Withdrawn
Application number
FR7403150A
Other languages
French (fr)
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.)
JULIEN AND MEGE
Original Assignee
JULIEN AND MEGE
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
Application filed by JULIEN AND MEGE filed Critical JULIEN AND MEGE
Priority to FR7403150A priority Critical patent/FR2258546A1/en
Publication of FR2258546A1 publication Critical patent/FR2258546A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type

Abstract

A pump unit for a central heating installation has two pumps (3) in parallel, which can be operated independently, mounted on a casing (1) between them so that water can enter through a common inlet (2), branch to either side to either pump, and so that the combined flows can unite in a common collector chamber (5) between them for delivery through a common outlet. At the entry ports (22) into the collector chamber is a spring loaded flap (31) which closes when its pump is not operating, thus acting as a stop valve which is self operating when a pump stops. A by-pass (36) with an externally operated control (37) communicates between th inlet port and the collector chamber.
FR7403150A 1974-01-23 1974-01-23 Double pump unit for central heating - blocks return flow when one pump of two parallel pumps stops Withdrawn FR2258546A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7403150A FR2258546A1 (en) 1974-01-23 1974-01-23 Double pump unit for central heating - blocks return flow when one pump of two parallel pumps stops

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7403150A FR2258546A1 (en) 1974-01-23 1974-01-23 Double pump unit for central heating - blocks return flow when one pump of two parallel pumps stops

Publications (1)

Publication Number Publication Date
FR2258546A1 true FR2258546A1 (en) 1975-08-18

Family

ID=9134244

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7403150A Withdrawn FR2258546A1 (en) 1974-01-23 1974-01-23 Double pump unit for central heating - blocks return flow when one pump of two parallel pumps stops

Country Status (1)

Country Link
FR (1) FR2258546A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2352184A1 (en) * 1976-05-20 1977-12-16 Loewe Pumpenfabrik Gmbh Twin pumps with changeover flap valves - have devices restricting amount for which valves can open
RU2711889C1 (en) * 2019-02-15 2020-01-23 Публичное акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королёва" Duplicated electrically-driven pump unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2352184A1 (en) * 1976-05-20 1977-12-16 Loewe Pumpenfabrik Gmbh Twin pumps with changeover flap valves - have devices restricting amount for which valves can open
RU2711889C1 (en) * 2019-02-15 2020-01-23 Публичное акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королёва" Duplicated electrically-driven pump unit

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Legal Events

Date Code Title Description
ST Notification of lapse