Heat exchanger and heat pump type hot water supply apparatus equipped with same

Inactive Publication Date: 2011-11-17
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]The present invention has been created with the foregoing in view and it is an object of the present invention to provide a heat exchanger with excellent heat exchange efficiency and a heat pump type hot water supply apparatus equipped with such a heat exchanger.

Problems solved by technology

When the aforementioned resistance welding is used for joining these metal tubes together, the following problems are encountered.
Therefore, the metal tubes cannot function sufficiently as flow channels for coolants or fluids and the desired efficiency of heat exchange cannot be obtained.
Where the pressurization in the stacking direction of the plurality of metal tubes is insufficient, the metal tubes cannot be sufficiently joined and the efficiency of heat exchange is therefore decreased.
Where the hollow portions of metal tubes are eliminated, the metal tubes cannot function sufficiently as flow channels for coolants or fluids and the desired efficiency of heat exchange cannot be obtained.

Method used

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  • Heat exchanger and heat pump type hot water supply apparatus equipped with same
  • Heat exchanger and heat pump type hot water supply apparatus equipped with same
  • Heat exchanger and heat pump type hot water supply apparatus equipped with same

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0047]FIG. 2 is a perspective view illustrating the heat exchanger 21 according to the first embodiment of the present invention. As shown in FIG. 2, the heat exchanger 21 has a structure that is spirally wound so that one end 41 in the longitudinal direction is disposed on the inner side and the other end 43 in the longitudinal direction is disposed on the outer side.

[0048]The heat exchanger 21 performs heat exchange between the coolant circulating in the coolant circuit 13 and water circulating in the hot water storage circuit 17 in the hot water supply apparatus 11 shown in FIG. 1. The directions of the coolant and water flowing in the heat exchanger 21 are mutually opposite directions as shown in FIG. 1. Therefore, where either of the coolant and water flows from the one end 41 to the other end 43 of the heat exchanger 21, the other fluid flows from the other end 43 toward the one end 41. The temperature of water can thus be regulated by performing heat exchange between the wate...

second embodiment

[0084]FIG. 7 is a cross-sectional view illustrating the heat exchanger according to the second embodiment of the present invention. As shown in FIG. 7, in the heat exchanger 21, the structure of the support members 55 is different from that of the first embodiment. Other components are assigned with same reference numerals as in the first embodiment and the explanation thereof is herein omitted.

[0085]The support members (support portions) 55 according to the second embodiment are constituted by a plurality of columnar bodies arranged along the longitudinal direction of the fluid flow channel 53. One end in an axial direction of each columnar body is joined to an inner surface (inner surface 57 or inner surface 59) on either side in the thickness direction of the fluid flow channel 53, and the other end in the axial direction of each columnar body is disposed on the inner surface side on the other side in the thickness direction of the fluid flow channel 53. All of the plurality of c...

third embodiment

[0093]FIG. 8 is a cross-sectional view illustrating the heat exchanger according to the third embodiment of the present invention. As shown in FIG. 8, the structure of the support member 55 of the heat exchanger 21 is different from that of the first embodiment. Other components are assigned with same reference numerals as in the first embodiment and the explanation thereof is herein omitted.

[0094]The support member (support portion) 55 according to the third embodiment is a plate-like body that is disposed along the longitudinal direction of the fluid flow channel 53 and has a corrugated cross-section perpendicular to the longitudinal direction. The plate-like body is disposed so that peaks of depressions and protrusions are continuous along the width direction of the fluid flow channel 53.

[0095]The metal tube 47 according to the third embodiment may be fabricated by bending a flat metal sheet (not shown in the figure) so as to form a hollow portion along the longitudinal direction...

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Abstract

A heat exchanger 21 is provided with a metal tube 47 that has a support member 55 inhibiting deformation in the thickness direction in a fluid flow channel 53, and a multiple-hole metal tube 45 that is stacked on one side of the metal tube 47 in the thickness direction and has an opposing surface disposed opposite an outer surface 61 on the one side of the metal tube 47 and joined by at least part thereof to the outer surface 61 on the one side.

Description

TECHNICAL FIELD [0001]The present invention relates to a heat exchanger and a heat pump type hot water supply apparatus equipped with same.BACKGROUND ART[0002]Seam welding, which is a type of resistance welding, excels in productivity because the zones that are to be joined can be joined continuously, and seam welding is used for various applications.[0003]For example, as disclosed in Patent Documents 1 and 2, seam welding is used when rounding a steel sheet to form a metal tube. More specifically, a steel tube is manufactured by disposing electrodes in the vicinity of two end surfaces of a steel sheet that has been rounded in a tubular shape such that the end surfaces face each other and forming a continuous seam by passing an electric current to the steel sheet via the electrodes, while moving the electrodes relative to the end surfaces.[0004]Further, seam welding is also used in manufacturing fuel tanks for vehicles. More specifically, flange portions provided on the circumferenc...

Claims

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Application Information

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IPC IPC(8): F25B30/00F28F1/00
CPCF24D17/02F28D7/0033F28D7/04F28F2225/04F28F3/02F28F3/044F28F13/12F28F1/022
InventorKIKUNO, TOMONORIINOUE, SATOSHIFUJIWARA, AKIHIROKIM, HYUNYOUNGSHIRAISHI, YOSHIKAZUYOSHIDA, KAORIHYOUDOU, TAKAYUKI
OwnerDAIKIN IND LTD