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Heat exchanger

A technology of heat exchangers and heat transfer tubes, applied in heat exchange equipment, lighting and heating equipment, evaporators/condensers, etc., can solve the problems of increased gas ventilation resistance and not easy to flow down, and achieve the purpose of suppressing ventilation resistance Effect

Active Publication Date: 2009-07-15
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the longitudinal direction of the flat heat transfer tube 4 is set in the horizontal direction, when the heat exchanger is used as a gas cooler, although the condensation attached to the surface of the fin 1 and the outer surface of the heat transfer tube 4 The water L can flow down smoothly if it is guided to the flat drainage surface connected in the vertical direction provided between the heat transfer tube on the windward side and the heat transfer tube on the leeward side of the fin 1, but before that, condensation The water L will stay and stay on the upper surface of the flat heat transfer tube 4, and it is difficult to flow down, which will greatly increase the ventilation resistance of the gas

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0036] figure 1 It is a front view of the fin 1 in which the flat heat transfer tube 4 is inserted in the heat exchanger according to the first embodiment of the present invention. figure 2 for along figure 1 The cross-sectional view in the direction of arrow A—A, figure 2 is a schematic diagram of a stacked state of a plurality of fins 1 inserted with flat heat transfer tubes 4 in the heat exchanger according to Example 1 of the present invention.

[0037] exist figure 1 , figure 2 Among them, when the heat exchanger is used as an evaporator, the main direction of the gas, that is, the "column direction" is set in the horizontal direction, and the direction perpendicular to the main direction of the gas, that is, the "layer direction" is set in the vertical direction .

[0038] The heat transfer tubes 4 with flat outer edges of the cross-section are inserted into the fins 1 roughly vertically with a specified column spacing and layer spacing. The flat heat transfe...

Embodiment 2

[0050] image 3 It is a front view of the fin 1 inserted with the flat heat transfer tube 4 in the heat exchanger of Example 2 of the present invention, Figure 4 for along image 3 A cross-sectional view in the direction of arrow BB of , which shows a schematic diagram of multi-layered fins 1 inserted with flat heat transfer tubes 4 in the heat exchanger according to Embodiment 2 of the present invention.

[0051] Such as image 3 , Figure 4 As shown in , the heat transfer tube 4 with a flat outer edge of the cross-section is inserted into the fin 1 approximately vertically to form a double-row and multi-layer structure with a specified row spacing and layer spacing, and the adjacent double rows The heat transfer tubes 4 are staggered from each other. In addition, the flat heat transfer tubes 4a in the upwind row form a slope that descends on the leeward side with an inclination angle α of about 5° to 30° relative to the main flow direction of the gas, while the flat hea...

Embodiment 3

[0063] Figure 5 It is a front view of the fin 1 inserted with the flat heat transfer tube 4 in the heat exchanger of Example 3 of the present invention, Figure 6 for along Figure 5 The view seen by the arrows C—C in the figure shows a schematic diagram of the fin 1 inserted with the flat heat transfer tube 4 in the heat exchanger of Embodiment 3 of the present invention.

[0064] exist Figure 5 , Figure 6 , the heat transfer tubes 4 with a flat outer edge of the cross-section are inserted into the fins 1 approximately vertically to form a double-row multi-layer structure with a specified column spacing and layer spacing, and the adjacent heat transfer tubes in the double row 4 are staggered from each other. And, the flat heat transfer tubes 4a of the windward row are inserted through the notch 3a on the windward leading edge of the fin 1, and the flat heat transfer tubes 4b of the leeward row are inserted through the notch 3b on the leeward trailing edge of the fin 1....

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Abstract

The present invention provides a heat exchanger in which condensed water generated when the heat exchanger is used as a gas cooler can flow down smoothly, so that the phenomenon that the ventilation resistance of the gas is greatly increased can be suppressed. Wherein, the flat heat transfer tubes (4) are arranged in a double-row multi-layer structure, and are arranged obliquely with respect to the main flow direction of the gas, and the adjacent heat transfer tubes in the two rows are staggered from each other. On the surfaces of the fins (1) located between the double-row flat heat transfer tubes (4a, 4b), there are provided drainage surfaces (8) communicating in the vertical direction. In this way, the condensed water generated on the surfaces of the fins (1) will first flow onto the upper surfaces of the flat heat transfer tubes (4a, 4b), and then flow along the flat heat transfer tubes (4a, 4b) ) flows down the inclined surface, and then flows down along the drainage surface (8) that communicates in the vertical direction. Therefore, the condensed water will not stay, and the ventilation resistance will not be greatly increased.

Description

technical field [0001] The present invention relates to a fin-and-pipe heat exchanger used in air conditioners and refrigerating equipment. This heat exchanger makes air and other gases flowing between a plurality of stacked flat fins flow in a flat shape. Heat exchange between water or refrigerant in the fluid in the heat transfer tube. Background technique [0002] A general fin-and-pipe heat exchanger composed of many flat fins and flat heat transfer tubes stacked together, such as Figure 9 , Figure 10 As shown in , it includes: a plurality of flat fins 1 that are stacked in parallel at a certain interval, and the gas W such as air flows therebetween; these fins 1 are inserted approximately vertically at a predetermined interval, A heat transfer tube 4 with fluid R such as water or refrigerant flowing inside, and the outer edge of the cross section is flat; and the two ends of the heat transfer tube 4 are respectively connected to form a refrigerant flow path together ...

Claims

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Application Information

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IPC IPC(8): F28F1/30F25B39/00
Inventor 横山昭一山口成人杉尾孝清水宪三
Owner PANASONIC CORP
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