(19) |
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(11) |
EP 2 241 829 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
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15.06.2016 Bulletin 2016/24 |
(43) |
Date of publication A2: |
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20.10.2010 Bulletin 2010/42 |
(22) |
Date of filing: 27.09.2002 |
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(51) |
International Patent Classification (IPC):
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Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
(30) |
Priority: |
28.09.2001 JP 2001302126
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(62) |
Application number of the earlier application in accordance with Art. 76 EPC: |
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02021700.6 / 1298395 |
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Applicant: Daikin Industries, Ltd. |
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Osaka-shi, Osaka 530-8323 (JP) |
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Inventors: |
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- Sakamoto, Shinichi
Shiga, 525-0044 (JP)
- Kataoka, Hidehiko
Shiga, 525-0044 (JP)
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(74) |
Representative: Laufhütte, Dieter et al |
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Lorenz Seidler Gossel
Rechtsanwälte Patentanwälte
Partnerschaft mbB
Widenmayerstraße 23 80538 München 80538 München (DE) |
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(54) |
Heat pump type hot water supply system |
(57) A heat pump type hot water supply system includes a hot water storage tank (3), and
a circulation line (12) connecting a water outlet (10) at the lower part of the storage
tank (3) and a hot water inlet (11) at the upper part thereof. The circulation line
(12) is provided partway therealong with a heat exchange line (14) to be heated by
a heat pump heat source. The system is configured to return hot water heated up in
the heat exchange line (14) to the hot water storage tank (3) through the hot water
inlet (11) When the heated water temperature of the heat exchange line (14) is equal
to or below a set point, the return of the water to the hot water storage tank (3)
through the hot water inlet (11) is hindered, and when the heated temperature of the
heat exchange line (14) is above the set point, the outgoing water from the heat exchange
line (14) is returned to the hot water storage tank (3) through the hot water inlet
(11).