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(11) | EP 2 881 674 A1 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Storage-type hot-water supplying system |
(57) A storage-type hot-water supplying system (1) comprising hot-water storage tanks
(7A, 7B, 7C) connected in series between a hot-water outlet pipe for high-temperature
water (4), extending from a heat source unit (2), and a water supplying pipe for low-temperature
water (5), leading to the heat source unit (2); wherein a most-upstream hot-water
storage tank (7A) closest to the hot-water outlet pipe (4) serves as a hot-water-supplying
hot-water storage tank for high-temperature water, and a most-downstream hot-water
storage tank (7C) serves as a water-supplying hot-water storage tank for the heat
source unit (2); and a hot-water supplying system (9A) for high-temperature water
is connected to the most-upstream tank (7A), and at least one hot-water supplying
system (9B, 9C) that allows hot water of different temperatures to be supplied via
a mixing valve (10B, 10C) is connected to a top portion of a tank (7B, 7C) at the
downstream side thereof.
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{Technical Field}
{Background Art}
{Citation List}
{Patent Literature}
{PTL 1} Japanese Unexamined Patent Application, Publication No. 2005-127640
{PTL 2} Japanese Unexamined Patent Application, Publication No. 2011-169584
{Summary of Invention}
{Technical Problem}
{Solution to Problem}
{Advantageous Effects of Invention}
{Brief Description of Drawings}
{Fig. 1} Fig. 1 is a diagram showing the configuration of a storage-type hot-water supplying system according to an embodiment of the present invention.
{Fig. 2} Fig. 2 is a diagram for explaining the operation of the above-described storage-type hot-water supplying system during hot-water storing operation.
{Fig. 3} Fig. 3 is a diagram for explaining the operation of the above-described storage-type hot-water supplying system when supplying high-temperature water.
{Fig. 4} Fig. 4 is a diagram for explaining the operation of the above-described storage-type hot-water supplying system when supplying intermediate-temperature water or low-temperature water.
{Fig. 5} Fig. 5 is a diagram for explaining the operation of the above-described storage-type hot-water supplying system when supplying hot water having two temperatures, namely, high-temperature water and intermediate-temperature water or low-temperature water.
{Description of Embodiment}
{Reference Signs List}
1 storage-type hot-water supplying system
2 heat source unit
3 hot-water storage unit
4 hot-water outlet pipe for high-temperature water
5 water supplying pipe for low-temperature water
6A, 6B connecting pipe
7A, 7B, 7C hot-water storage tank
8 water supply pipe
9A 9B, 9C hot-water supplying pipe (hot-water supplying system)
10A, 10B, 10C mixing valve
11A, 11B, 11C water supplying pipe
REFERENCES CITED IN THE DESCRIPTION
Patent documents cited in the description