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Plate-type heat exchanger, heat pump device, and heat-pump-type cooling and heating hot-water supply system

a heat exchanger and heat pump technology, applied in domestic hot water supply systems, heating types, lighting and heating apparatus, etc., to achieve the effect of improving the fluid distribution performance in the plan

Pending Publication Date: 2021-11-04
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a new design for a heat exchanger that improves the distribution of fluid in the flow passage. This is achieved by adding protruding portions on the inflow and outflow sides of the heat transfer plates to prevent fluid from flowing into gaps between the plates and fins, and to position the fins accurately. The technical effect is better heat transfer performance and more uniform fluid flow.

Problems solved by technology

The presence of such gaps undesirably causes a fluid to preferentially flow into the gaps without flowing through the inner fin.

Method used

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  • Plate-type heat exchanger, heat pump device, and heat-pump-type cooling and heating hot-water supply system
  • Plate-type heat exchanger, heat pump device, and heat-pump-type cooling and heating hot-water supply system
  • Plate-type heat exchanger, heat pump device, and heat-pump-type cooling and heating hot-water supply system

Examples

Experimental program
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Effect test

embodiment 1

[0038]FIG. 1 is an exploded side perspective view of a plate-type heat exchanger according to Embodiment 1 of the present disclosure. FIG. 2 is a front view of a first heat transfer plate of the plate-type heat exchanger according to Embodiment 1 of the present disclosure. FIG. 3 is a front view of a second heat transfer plate of the plate-type heat exchanger according to Embodiment 1 of the present disclosure. FIG. 4 is a front perspective view of a heat transfer set of the plate-type heat exchanger according to Embodiment 1 of the present disclosure. Although FIG. 4 is a perspective view, FIG. 4 is a diagram that is substantially close to a front view. FIG. 5 is a cross-sectional view taken along line A-A in FIG. 4. FIG. 6 is an end elevation view of a cross-section taken along line B-B in FIG. 4. FIG. 7 is a cross-sectional view taken along line B-B in FIG. 4. FIG. 8 is an end elevation view of a cross-section taken along line C-C in FIG. 4.

[0039]As shown in FIG. 1, a plate-type ...

embodiment 2

[0090]In Embodiment 1, the second projecting portion 23 and the second projecting portion 27 are each formed in one place. In Embodiment 2, second projecting portions 23 are formed in two places, and second projecting portions 27 are formed in two places. The following mainly describes points in which Embodiment 2 differs from Embodiment 1, and omits to describe constituent elements of Embodiment 2 that are similar to those of Embodiment 1.

[0091]FIG. 9 is a front perspective view of a heat transfer set of a plate-type heat exchanger according to Embodiment 2 of the present disclosure. FIG. 10 is an end elevation view of a cross-section taken along line B-B in FIG. 9. FIG. 11 is an end elevation view of a cross-section taken along line C-C in FIG. 9.

[0092]Embodiment 2 is identical to Embodiment 1 except for the numbers and locations of second projecting portions 23 and second projecting portions 27.

[0093]As shown in FIGS. 9 and 11, the first heat transfer plate 1 of the heat transfer...

embodiment 3

[0101]The following mainly describes points in which Embodiment 3 differs from Embodiment 2, and omits to describe components of Embodiment 3 that are similar to those of Embodiment 2.

[0102]FIG. 15 is a front perspective view of a heat transfer set of a plate-type heat exchanger according to Embodiment 3 of the present disclosure. Although FIG. 15 is a perspective view, FIG. 15 is a diagram that is substantially close to a front view. FIG. 16 is a front view of a first heat transfer plate of FIG. 15. FIG. 17 is a cross-sectional view taken along line A-A in FIG. 15. FIG. 18 is an end elevation view of a cross-section taken along line B-B in FIG. 15. FIG. 19 is an end elevation view of a cross-section taken along line C-C in FIG. 15. It should be noted that the opposite of Embodiment 2 is true in FIG. 15; that is, the second heat transfer plate 2 is situated at the front, and the first heat transfer plate 1 is situated at the back.

[0103]As in the case of Embodiment 2, the second heat...

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Abstract

A plate-type heat exchanger includes a plurality of heat transfer plates stacked on top of each other, a flow passage, formed by each space between the plurality of heat transfer plates, through which a fluid flows in a first direction; an inner fin disposed in the flow passage, a first projecting portion provided on an inflow side of each of the heat transfer plates and configured to prevent the fluid from flowing into gaps between both ends of the inner fin in a second direction and both ends of the heat transfer plate in the second direction, and a second projecting portion formed on an outflow side of each of the heat transfer plates and configured to perform positioning in placing the inner fin into the heat transfer plate. The first direction is a direction of flow of the fluid through the flow passage.

Description

TECHNICAL FIELD[0001]The present disclosure relates to a plate-type heat exchanger including an inner fin, to a heat pump device, and to a heat-pump-type cooling and heating hot-water supply system.BACKGROUND ART[0002]Hitherto, there has been known a stacked plate-type heat exchanger including a plurality of heat transfer plates stacked with an inner fin interposed therebetween, and is configured to allow different fluids to alternately flow through each flow passage formed between a heat transfer plate and a heat transfer plate, and also is configured to exchange heat via the heat transfer plates (see, for example, Patent Literature 1).[0003]In Patent Literature 1, the plate-type heat exchanger has a cuboidal shape as a whole and, at both ends of the inner fin in a transverse direction, has gaps between the inner fin and wall surfaces erected from both ends of each of the heat transfer plates. The presence of such gaps undesirably causes a fluid to preferentially flow into the gaps...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25B29/00F28F9/02F28F3/08F24D17/02F28F3/02
CPCF25B29/003F28F9/02F28F3/08F28F2215/10F28F3/02F28F2250/106F24D17/02F28D9/005F28F3/025F28F3/06F28F2240/00F28F3/044F28F13/06F28F3/10
Inventor SUN, FAMINGYOSHIMURA, SUSUMUEIJIMA, YOSHITAKASHIRAISHI, SHOABE, RYOSUKEYOKOI, MASAHIROSUZUKI, KAZUTAKAITO, DAISUKE
Owner MITSUBISHI ELECTRIC CORP