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Heat-exchanger header and heat exchanger provided therewith

A technology of heat exchanger and heat exchange part, applied in the direction of heat exchange equipment, heat exchanger type, heat exchanger shell, etc., can solve the problems of distributing refrigerant, performance degradation of heat exchanger, etc., to achieve equal structure, pressure loss inhibiting effect

Active Publication Date: 2015-01-14
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the refrigerant cannot be equally distributed to each flat tube, and the performance of the heat exchanger is lowered.

Method used

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  • Heat-exchanger header and heat exchanger provided therewith
  • Heat-exchanger header and heat exchanger provided therewith
  • Heat-exchanger header and heat exchanger provided therewith

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0034] figure 1 It is a schematic perspective view of a heat exchanger using the heat exchanger header according to Embodiment 1 of the present invention. exist figure 1 As well as in the drawings described later, members assigned the same reference numerals are the same or equivalent members, and this applies throughout the specification. In addition, the form of the component shown in the whole specification is a mere illustration, and is not limited to these descriptions.

[0035] The heat exchanger 1 is a parallel-flow heat exchanger in which refrigerant flows in parallel, and in particular, is a unidirectional flow-path type heat exchanger in which refrigerant flows from one side to the other in the entire heat exchanger 1 . The heat exchanger 1 includes a pair of headers 10, 20 arranged apart from each other; a plurality of flat tubes ( heat transfer tubes) 30; and a plurality of fins 40. A pair of header pipes 10, 20, flat tubes 30, and fins 40 are all made of alumi...

Embodiment approach 2

[0062] Figure 12 It is a figure which shows 1 A of heat exchangers concerning Embodiment 2 of this invention.

[0063] The heat exchanger 1A is a parallel-flow heat exchanger that makes refrigerant flow in parallel, and is particularly a reentrant flow path type heat exchanger. In addition, a configuration example in which the number of paths is five is shown here.

[0064] The heat exchanger 1A includes a pair of headers 70, 80 arranged away from each other; a plurality of headers (here, 20) flat tubes (heat transfer tubes) 30; and a plurality of fins 40. The pair of headers 70 and 80, the flat tube 30, and the fins 40 are all made of aluminum or an aluminum alloy. The structures of the flat tubes 30 and the fins 40 are the same as those of the first embodiment.

[0065] Figure 13 yes figure 1 An exploded perspective view of header 70 of FIG.

[0066] The header 70 has a box-shaped header body 71 with one surface open. On the bottom surface 71b of the header main bo...

Embodiment approach 3

[0082] Embodiment 3 corresponds to the structure in which the return flow path type heat exchangers of Embodiment 2 are provided in multiple rows (here, two rows) in the air passing direction.

[0083] Figure 15 It is a figure which shows the heat exchanger of Embodiment 3 of this invention. Figure 15 (a) is a schematic side view of the heat exchanger viewed from a direction perpendicular to the air passage direction indicated by the dotted line arrow. Figure 15 (b) is a schematic cross-sectional view of the upstream side heat exchange part 1Ba on the upstream side with respect to the air passing direction. Figure 15 (c) is a schematic cross-sectional view of the downstream side heat exchange part 1Bb on the downstream side with respect to the air passing direction. Figure 15 (d) is a plan view of the heat exchanger. Hereinafter, the differences between Embodiment 3 and Embodiment 2 will be mainly described.

[0084] The heat exchanger 1B includes the same heat exchan...

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Abstract

Provided are: a heat-exchanger header that can reduce pressure losses, can distribute a refrigerant evenly without causing the heat-transfer performance of the heat exchanger to decrease, and has a simple structure; and a heat exchanger provided with said heat-exchanger header. This heat-exchanger header (10, 20) is used in a heat exchanger in which a refrigerant is run in parallel through a plurality of heat-transfer tubes (30) laid out in parallel. A plurality of through-holes (12) to which one end of each of the plurality of heat-transfer tubes is attached are lined up in the header in the lengthwise direction thereof. At least one chamber (10A) that connects to the plurality of through-holes, forming a refrigerant channel, is formed in the header. Each of the plurality of through-holes is either an entrance-side through-hole or an exit-side through-hole to which either the refrigerant-entrance-side end or the refrigerant-exit-side end of one of the plurality of heat-transfer tubes is attached. A plurality of grooves (14) that extend in the lengthwise direction of the header are formed, in the widthwise direction perpendicular to said lengthwise direction, in the parts of the abovementioned chamber facing the entrance-side through-holes.

Description

technical field [0001] The present invention relates to, for example, a header for a heat exchanger used in a heat exchanger of a refrigeration cycle apparatus such as an air conditioner, and a heat exchanger including the header for a heat exchanger. Background technique [0002] Conventionally, there is a heat exchanger configured as follows: a pair of headers extending in the vertical direction are arranged apart from each other in the left-right direction, a plurality of flat tubes are arranged in parallel between the pair of headers, and the plurality of heat exchange tubes are arranged in parallel. Both ends communicate with a pair of headers. In such a heat exchanger, when used as an evaporator, since the refrigerant flows in as a gas-liquid two-phase flow, the liquid accumulates in the header on the inlet side in the direction of gravity, and the gas volume accumulates in the header in the header. above. As a result, there is a problem that the refrigerant cannot b...

Claims

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Application Information

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IPC IPC(8): F28F9/02
CPCF28D2021/0071F28F9/0265F28F9/0268F28F2009/0292F28D7/16F28F9/02
Inventor 石桥晃松田拓也李相武冈崎多佳志
Owner MITSUBISHI ELECTRIC CORP
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