JP2006292346A - Pipeless plate fin type heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To propose a plate fin type heat exchanger having no heat receiving tube, which can be manufactured at low cost with a light weight while improving the assembling property and productivity. <P>SOLUTION: A plurality of openings 11 having a cylindrical protruding edge 12 of a predetermined height formed on the periphery are arranged on the whole surface of a plate fin 10, the tip of the cylindrical protruding edge 12 is horizontally flared to form a collar 13, a predetermined number of plate fins 10 are laminated while positioning the openings 11 and allowing each collar 13 to the plate fin 10 of the next stage, and the abutting surfaces are brazed to form a tubular passage 16 in which the cylindrical protruding edges 12 are continued. One fluid is distributed in the tubular passage 16 and the other fluid is distributed in layered spaces among the plate fins 10 to perform heat exchange between the both. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pipeless plate fin type heat exchanger having a structure in which no heat receiving pipe is provided.

  The plate fin type heat exchanger is formed by joining a large number of plate fins to the outer peripheral surface of a plurality of parallel pipes (heat receiving pipes). In a heat-related device such as a hot water supply / hot water device or a refrigeration / air conditioning device, Widely used as a heat exchanger for heat absorption and heat dissipation between gas and gas-gas fluids. Conventionally, this plate fin type heat exchanger has a predetermined number of plate fins with pipe insertion holes arranged on the entire surface, assembles the heat receiving pipes through the pipe insertion holes, expands each heat receiving pipe, It is manufactured by tightly bonding plate fins. The plate fin type heat exchanger manufactured by such means is complicated in assembling work, requires man-hours and equipment for tube expansion, and is expensive to manufacture. Further, the existence of the heat receiving pipe has problems such as an increase in material cost and product weight.

  This invention proposes a plate fin type heat exchanger with a new structure that does not have a heat receiving pipe, eliminates the need for a pipe expansion process, greatly improves assembly workability and productivity, and is a pipeless A plate fin heat exchanger is proposed.

  In the pipeless plate fin type heat exchanger according to the present invention, a plurality of apertures 11 having a cylindrical protruding edge 12 having a predetermined height on the periphery are arranged on the entire surface of the plate fin 10, and the tip of the cylindrical protruding edge 12 is arranged. Flaws 13 are formed by flaring outward in the horizontal direction. Then, the position of the opening 11 is aligned, the flange 13 is brought into contact with the plate fin 10 at the next stage, a predetermined number of plate fins 10 are stacked, the contact surface is brazed, and the cylindrical protruding edge 12 is continuous. The tubular passage 16 is formed so that one fluid flows through the tubular passage 16 and the other fluid flows through the laminar space between the plate fins 10 for heat exchange.

  Since the pipeless plate fin type heat exchanger of the present invention is assembled by bringing the flange 13 at the tip of the cylindrical protruding edge 12 into contact with the plate fin 10 at the next stage, the interval between the plate fins 10 is precisely defined and assembled. Since the abutting surface is brazed, the plate fin 10 can be firmly joined without causing poor joining due to a sufficient joining area and a reasonable joint shape. Therefore, the manufacturing cost can be greatly reduced by improving the assembly workability and productivity.

  Moreover, the tubular channel | path 16 with which the cylindrical protrusion 12 continued was formed, one fluid distribute | circulates in the tubular channel | path 16, and the other fluid distribute | circulates through the laminar space between the plate fins 10, and performs heat exchange. Thus, a pipeless structure using only the plate fin 10 that does not require a heat receiving pipe is used, the number of parts and material cost are reduced, and the weight of the product can be reduced.

  The best mode for carrying out the present invention will be specifically described below based on the embodiments shown in the drawings. In the embodiment of the drawing, the plate fin 10 is formed by press-molding a rectangular plate made of copper or copper alloy, and circular openings 11 are arranged on the entire surface at a predetermined interval. A cylindrical projecting edge 12 having a predetermined height is formed on the periphery of the opening 11, and a flange 13 is formed by flaring the tip of the tubular projecting edge 12 in the horizontal outward direction.

  The pipeless plate fin heat exchanger of the present invention is manufactured using a predetermined number of plate fins 10. A predetermined number of plate fins 10 are stacked with the positions of the apertures 11, and as shown in FIG. 2, the flange 13 is brought into contact with the plate fin 10 in the next stage, and a brazing material (phosphorous copper brazing) is appropriately installed. Apply and assemble, and put it in the heating furnace. The brazing material is heated and melted in the heating furnace, the contact surface between the flange 13 and the plate fin 10 at the next stage is brazed in a gas-liquid tight manner, and a tubular passage 16 in which the cylindrical protruding edges 12 are continuous is formed. The

  3 and 4 show an embodiment of the pipeless plate fin heat exchanger manufactured in this way. As shown in the figure, an inlet-side header 20 that forms a fluid inlet space is brazed to the bottom surface of the stacked plate fins 10, and an outlet-side header 22 that forms an outlet space is brazed to the top surface of the plate fins 10. A fluid inlet opening 21 is formed in the inlet header 20, and an outlet opening 23 is formed in the outlet header 22. The tubular passage 16 penetrates the stacked plate fins 10 vertically and is arranged at a predetermined interval, and communicates with the respective spaces of the inlet side header 20 and the outlet side header 22.

  This pipeless plate fin heat exchanger is a heat exchanger that performs heat exchange between a primary-side high-pressure gas and a secondary-side low-pressure gas. The primary side high-pressure gas is circulated to the inlet opening 21-inlet side header 20-each tubular passage 16-outlet side header 22-outlet opening 23 (indicated by arrows in FIG. 4), and the secondary side low-pressure gas is subjected to plate heat exchange. The air is blown from one side surface of the vessel to the other side surface (indicated by white arrows in FIG. 4) to supply air to the layered space between the plate fins 10. As a result, the plate fin 10 functions as a heat transfer fin, and heat exchange is performed between the primary-side high-pressure gas and the secondary-side low-pressure gas. In addition, you may comprise so that a vortex | eddy_current may be produced in a primary side high pressure gas and a thermal efficiency may be aimed at by inserting a twist board and a coil in the tubular channel | path 16. FIG.

  The top view of a plate fin in the Example of this invention.   The expanded sectional view of the AA line in FIG.   The front view of a pipeless plate fin type heat exchanger.   The perspective view of a pipeless plate fin type heat exchanger.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Plate fin 11 Opening hole 12 Cylindrical edge 13 鍔 16 Tubular passage

Claims (1)

A plurality of apertures 11 having a cylindrical protruding edge 12 having a predetermined height on the periphery are arranged on the entire surface of the plate fin 10, and the tip of the cylindrical protruding edge 12 is flared outwardly to form a flange 13. ,
The position of the opening 11 is adjusted, the flange 13 is brought into contact with the plate fin 10 in the next stage, a predetermined number of plate fins 10 are stacked, the contact surface is brazed, and the tubular protruding edge 12 is continuous. Forming a passage 16,
A pipeless plate fin type heat exchanger configured such that one fluid flows through the tubular passage 16 and heat exchange is performed through the other fluid flowing through the layered space between the plate fins 10.

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