JPS61235696A - Heat exchanger - Google Patents

Abstract

PURPOSE:To permit highly efficient heat exchanging effect by a method wherein primary fluid flow paths are formed by corrugated heat exchanging fins and heat transfer partitioning plates, pinching the fins, and secondary fluid guiding members as well as the flow regulating fins for the secondary fluid, which are serving also as the spacers of the heat transfer partitioning plates, are bonded onto the heat transfer partitioning plates. CONSTITUTION:The heat exchanger is provided with the corrugated heat exchanging fins 7, cut into a predetermined configurations, and the heat transfer partitioning plates 8a, 8b, which are provided with the same shapes as the fins pinched therebetween and flowing the primary fluid A therethrough from one end to the other end thereof. The guide members 9, 10 serving as the spacers also, are bonded onto both end rims of the heat transfer partitioning plates and narrow paper tablet type flow regulating fins 11 are bonded between both guide members to form a unit heat exchanging element having the same shape respectively. A guide flow path of the secondary fluid B, whose heat is exchanged with the heat of the primary fluid A, is formed by the guide members 9, 10 as well as the flow regulating fins 11 of one heat exchanging element and the heat transfer partitioning plate of neighboring other unit heat exchanging element. as a result, highly efficient heat exchanging effect may be obtained and the flow of the secondary fluid may be smoothened by reducing the passage resistance thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat exchanger in an air conditioning ventilation fan or a heat exchange device for cooling indoor air with outside air.

[Conventional technology]

Figures 6 and 7 are an assembled view and an exploded perspective view of a conventional heat exchanger of this type disclosed in Japanese Utility Model Application Publication No. 57-51289. Rectangular corrugated heat exchange fins forming parallel flow channels through
(2a) is a heat transfer partition plate of the same shape on which this is placed and fixed;
+31f4) is a spacer whose top surface is in contact with both end edges of the heat transfer partition plate (2a).
) is formed in a series by bending at the end edge of the other heat transfer partition plate (2b) forming a pair.

(5) is a secondary fluid rectifying fin attached to the intermediate position of both spacers +31 and +41, and (6) is an outer frame on the front and back side that accommodates these in a stacked state. At 11111, an intake (al) and an outlet (al) for the primary fluid IAI are provided, and at the front, an intake (bl) and an outlet (b2) for the secondary fluid tB) are provided.

[Problem that the invention seeks to solve]

As described above, in the conventional type, the heat exchange flow path for passing the primary fluid and the secondary fluid is formed by a heat transfer partition plate having corrugated heat exchange fins, a series of spacers formed by bending at both end edges, and a spacer at an intermediate position between them. Since it is constructed by alternately stacking heat transfer partition plates with attached rectifying fins, the cross-sectional area of each fluid flow path after the stacking is completed tends to vary due to dimensional errors during machining, and secondary The opening positions of the fluid intake and outlet were also determined by themselves in one direction, such as the front side, and there were drawbacks such as restrictions on installation work.

The present invention solves these drawbacks.

The purpose is to obtain a highly efficient heat exchange action and further to reduce passage resistance of the secondary fluid so that its flow becomes smooth.

[Means for solving the problem] In the case of the present invention, first a predetermined primary fluid flow path is formed between the corrugated heat exchange fins and the heat transfer partition plates that sandwich them, and then one of the heat transfer partitions is A secondary fluid guide member that also serves as a spacer and a secondary fluid rectifying fin, which are cut to a predetermined size in advance, are pasted on a plate at a predetermined position, and these form a pair of upper and lower unit heat exchange elements for lamination. It consists of

[Effect]

In the case of this invention, a parallel flow path for passing the primary fluid from one end to the other is first formed using the corrugated heat exchange fins and the heat transfer partition plates that sandwich the fins, and then a spacer is attached on top of the parallel flow path. A secondary fluid flow path having a predetermined flow path is formed alternately by the guide member, the rectifying fins, and the heat transfer partition plate of one of the adjacent heat exchange elements by stacking the unit heat exchange elements.

〔Example〕

Figures 1 to 4 show an embodiment of the heat exchanger of the present invention, in which corrugated heat exchange fins (7) are used.
is cut to form a planar trapezoid.

This is sandwiched between heat transfer partition plates (8a) and (8b) of the same shape.

A parallel flow path is formed from one end of the corrugated heat exchange fins to the other end thereof through which the primary fluid fA) passes. +9
101 is a secondary fluid CB which also serves as a spacer and is pre-cut to a predetermined size according to the planar shape of the corrugated heat exchange fins (7).
) is a rod-shaped guide member, αυ is also a corrugated heat exchange fin (
This is a rectifying fin for the secondary fluid (B) which has been cut into a rectangular shape having a predetermined size in advance to match the planar shape of 7).

Figure 2 shows a laminated unit heat exchange element of the present invention constructed as a single unit by polymerizing and pasting each of the necessary parts constructed as described above as shown in the figure, including corrugated heat exchange fins (7). The primary fluid F passing between the heat transfer partition plates (sa) and (sb) sandwiching the
A) and the guide member 01 (91) attached to both end edges of one heat transfer partition plate (8b), the rectifying fin 0υ attached to the intermediate position of these guide members and the guide member 01 of one of the adjacent unit heat exchange elements. Heat exchange is performed between the secondary fluid (B) passing through the flow path with the thermal partition plate.

FIG. 3 is a perspective view showing a laminated heat exchange body in which a plurality of unit heat exchange elements of the present invention configured as shown in FIG. 2 are stacked vertically in the same direction, and FIG. This is a plan view showing a horizontal cross section of a laminated heat exchanger housed in an outer frame (1) of the same shape, and there is a secondary fluid (B) intake port (BL) on the front wall of the outer frame a. ) and air outlet (b2) are opened,
In addition, the side wall of the outer frame Q3 has a primary fluid (A) intake port (al
) and the outlet (al) are opened to face each other, and the heat exchange action between the primary fluid (A) and the secondary fluid (B) is particularly effective at the back wall side of the outer frame (13) through which each fluid passes intensively. It is designed to be carried out in a high density state in a high heat exchange section.

FIG. 5 shows another embodiment of the heat exchanger of the present invention, which is characterized in that the corrugated heat exchange fins and the heat transfer partition plates that sandwich them are both cut into diamond shapes. ,
As a result, the intake port (bl) of the secondary fluid (B) is
3, and the air outlet (bl) is opened on the front wall side, but the other configurations are the same.

[Effects of the Invention] Since the heat exchanger of the present invention is configured as described above, a large number of guide members that also serve as spacers and rectifying fins cut into predetermined dimensions are prepared in advance, and these are then A unit heat exchange element for a predetermined laminated heat exchange body can be obtained by simply attaching the corrugated heat exchange fins to both end edges and the intermediate part of the heat transfer partition plates that sandwich them in accordance with the shape of the corrugated heat exchange fins. It can be used for heat exchangers of various shapes.

In addition, since the cutting and assembly can be automated, the quality and performance of the finished heat exchanger can be made uniform, and the heat exchange effect due to unbalanced fluid flow between each unit heat exchange element in the laminated heat exchanger after two assemblies. This makes it possible to obtain a heat exchanger that is inexpensive and has good heat exchange efficiency, with no waste.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a unit heat exchange element constituting the heat exchanger of the present invention, Fig. 2 is an assembled view thereof, and Fig. 3 is a laminated heat exchanger consisting of a stack of the unit heat exchange elements of Fig. 2. FIG. 4 is a plan view showing a horizontal section of the embodiment shown in FIG. 3 housed within its outer frame, and FIG. 5 is a similar horizontal section showing another embodiment of FIG. 6 is a perspective view showing a conventional heat exchanger, and FIG. 7 is an exploded perspective view thereof. In the figure, (7) is a corrugated heat exchange fin, (sa) (
ab) is a heat transfer partition plate, (9) Ql is a guide member, Ql
) is a rectifier fin. (person) is the primary fluid, (B) is the secondary fluid, and (a+) is the intake port. (a2) is the air outlet, (b+) is the intake port, (bl)
indicates the air outlet. The same reference numerals in the other two figures indicate the same parts.

Claims (3)

[Claims] (1) A corrugated heat exchange fin cut into a predetermined shape, and a heat transfer partition plate of the same shape sandwiching the fins and passing the primary fluid from one end to the other end, with one end of the heat transfer partition plate. By pasting a guide member that also serves as a spacer on the edge and rectifying fins in the form of rectangular strips between these two guide members to form the same unit heat exchange element, the guide member and the rectifier fin of one heat exchange element are attached. and one heat transfer partition plate of another adjacent unit heat exchange element to form a guide passage for a secondary fluid that exchanges heat with the primary fluid. A heat exchanger consisting of (2) The corrugated heat exchange fins and the heat transfer partition plates that sandwich them and allow the primary fluid to pass between them are both formed into the same trapezoid shape, and the guide channel formed on one of the heat transfer partition plates is passed through. Claims No. 1 in which an intake port and an outlet port for a secondary fluid that exchanges heat with the primary fluid are opened on the same front side of an outer frame that houses a laminated heat exchanger made of a stack of these unit heat exchange elements. Heat exchanger according to item 1. (3) The corrugated heat exchange fins and the heat transfer partition plates that sandwich the fins and allow the primary fluid to pass between them are both formed into the same rhombus shape. A patent in which the intake port for the secondary fluid that exchanges heat with the fluid is opened on the back side of the outer frame that houses the laminated heat exchanger made of a stack of these unit heat exchange elements, and the air outlet is opened on the front side of the outer frame. A heat exchanger according to claim 1.