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Heat pump type hot water supply apparatus and heating and hot water supply apparatus

a technology of hot water supply and heat pump, which is applied in the direction of lighting and heating apparatus, heating types, domestic hot water supply systems, etc., can solve the problems of difficult to realize the capacity achieve the effect of simple construction, and improving the heat exchange efficiency of hot water supply heat exchangers

Inactive Publication Date: 2010-04-29
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0026]As apparent from the above description, according to the heat pump type hot water supply apparatus of the invention, the heat exchange efficiency of the hot water supply heat exchanger can be improved with a simple construction, making it implementable to realize a heat pump type hot water supply apparatus capable of supplying high-temperature hot water.
[0027]Also according to the heating and hot water supply apparatus of the invention, with use of a heat pump type hot water supply apparatus capable of improving the heat exchange efficiency of the hot water supply heat exchanger with a simple construction and supplying high-temperature hot water, there can be realized a heating and hot water supply apparatus capable of supplying high-temperature hot water and fulfilling heating by using the hot water within the hot water tank as a heat source.

Problems solved by technology

Such a heat pump type hot water supply apparatus using a hot water supply heat exchanger has a problem that it is difficult to realize a hot water supply heat exchanger capable of fulfilling efficient heat exchange between the hot water within the hot water tank and the supplied hot water.

Method used

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  • Heat pump type hot water supply apparatus and heating and hot water supply apparatus
  • Heat pump type hot water supply apparatus and heating and hot water supply apparatus
  • Heat pump type hot water supply apparatus and heating and hot water supply apparatus

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first embodiment

[0045]First, FIG. 1 shows a construction of a heating and hot water supply apparatus using a heat pump type hot water supply apparatus according to a first embodiment of the invention. This heating and hot water supply apparatus is constituted by a hot water supply unit which includes a hot water tank 1, a hot water supply heat exchanger 10 and an endothermic heat exchanger 42; a heat pump unit 2 which includes a compressor 3, a radiative heat exchanger 41, an expansion valve 5 and an endothermic heat exchanger 6; and a radiator 30 as an example of a heating terminal, and the like.

[0046]The hot water tank 1 has a longitudinally elongate cylindrical-shaped closed housing in which water W0 is internally stored generally up to a vicinity of an upper end while the later-described hot water supply heat exchanger 10 is placed over a range from a top 1a to a bottom 1b.

[0047]The hot water supply heat exchanger 10 is so constructed that a heat transfer tube of a specified diameter is first ...

second embodiment

[0077]Next, FIG. 4 shows a construction of a heating and hot water supply apparatus using a heat pump type hot water supply apparatus according to a second embodiment of the invention. This heating and hot water supply apparatus is basically similar in construction to the heating and hot water supply apparatus of the first embodiment, but differs therefrom in that a tube diameter of the lower-stage side portion 10b of the hot water supply heat exchanger 10 is set thinner than a tube diameter of the other upper-stage side portion 10a, whereas the heating and hot water supply apparatus of the first embodiment is so set that the entire range from the upper-stage side portion 10a to the lower-stage side portion 10b is equal in tube diameter.

[0078]With this construction, in the lower-stage side portion 10b of the hot water supply heat exchanger 10, water W1 flows through inside thereof at higher flow velocity, making the heat transfer rate to be improved correspondingly so that the amoun...

third embodiment

[0081]Next, FIG. 5 shows a construction of a heating and hot water supply apparatus using a heat pump type hot water supply apparatus according to a third embodiment of the invention. This heating and hot water supply apparatus is also similar in basic construction to the heating and hot water supply apparatus of the first embodiment. However, their difference is that whereas the heating and hot water supply apparatus of the first embodiment is so set that the entire range from upper end to lower end of the hot water supply heat exchanger 10 is uniform in a coil-portion pitch as well as in an outer diameter of its heat-transfer-tube coil portion, the coil portion in this embodiment is formed in such a helical state that the pitch of the coil portion is smaller in the lower-stage side portion 10b than in the upper-stage side portion 10a and moreover the outer diameter of the coil portion is so reduced as to gradually decrease toward the lower end.

[0082]With such a construction, in th...

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PUM

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Abstract

A heat pump type hot water supply apparatus includes a heat pump unit 2 for heating water, a hot water tank 1 for storing therein hot water heated by the heat pump unit 2, and a hot water supply heat exchanger 10 which is placed substantially over a vertical entirety of interior of the hot water tank 1 and in which water flows from lower side toward upper side. Water that has flowed out from the upper side of the hot water supply heat exchanger 10 is discharged out from the top portion of the hot water tank 1.

Description

TECHNICAL FIELD[0001]The present invention relates to heat pump type hot water supply apparatuses as well as heating and hot water supply apparatuses. More specifically, the invention relates to a heat pump type hot water supply apparatus, as well as a heating and hot water supply apparatus, for heating water in a hot water tank by a heat pump unit and for heating, by the heated water in the hot water tank, water flowing through within a hot water supply heat exchanger placed in the hot water tank with a view to supplying hot water.BACKGROUND ART[0002]Conventionally, there has been provided a heat pump type hot water supplier which includes a heat pump unit for heating water, and a hot water tank for storing hot water heated by the heat pump unit, to fulfill heating and hot water supply by utilizing the hot water stored in the hot water tank (see, e.g., JP 2006-329581 A).[0003]While the heat pump type hot water supply apparatus described above is so designed that hot water stored in...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F24D17/02F25B30/00
CPCF24D3/087F24D11/0228Y02E60/142Y02B30/126Y02B10/70F28D2020/0078F28D20/0034F24D2220/209F24D2200/12F24D2200/08F24D2220/06F24D2240/12F24D2220/08F24D2240/10F24D2240/20F24D2240/22F24D3/18F24H4/04F28D1/0213F28D1/0472F28F13/08Y02B30/12Y02E60/14
Inventor FURUI, SYUUJINUMATA, MITSUHARU
Owner DAIKIN IND LTD
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