JPS6129697A - Laminated type heat exchanger - Google Patents

Abstract

PURPOSE:To improve the property by maintaining large effective heat exchanging area, by a method wherein the input and output of tube elements are communicated and connected and secured to a header tube of which inner part is separated into two passages interposing a partitioning along the axis line direction. CONSTITUTION:The inner part of the header pipe 3 which is composed of pipe material is separated into two passages 10a, 10b by a stripe type partitioning 9. A heat medium input pipe 4 and an output pipe 5 are respectively attached to holes 11, 12 at the both end parts above and below provided at two passages 10a, 10b. The header pipe 3 is provided and secured in longitudinal direction at the center part of the side edge of the tube element 1, communication holes 13, 14 provided at the periphery wall part of the two passages 10a, 10b at the determined space being made coincident with an inlet 6 and an outlet 7 of the tube element 1. Hereby, the header pipe 3 is made as combining an inlet header and an outlet header with only one pipe, and will not interfere at all the flowing of air.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a stacked heat exchanger used as an evaporator for air conditioning in automobiles, for example.

2. Description of the Related Art Hitherto, many heat exchangers of this type have been of the laminated type, generally called the Dron cup type. As shown in Figure 5, this laminated heat exchanger is press-molded into a dish shape, and two molded plates are stacked together to form a heat medium passage section and a header section or tank section that communicates with the heat medium passage section. The tube element (21) is made up of a plurality of corrugated fins (22), which are alternately stacked in multiple stages to form an integrated structure.
4) is generally installed at both ends (for example, Utility Model Publication No. 53-32380, Utility Model Publication No. 56-20766).
. However, for this reason, there was a drawback that the area where the air from the blower circulates and effectively contributes to heat exchange, that is, the effective heat exchange area is limited between the tank parts (23) and (24) at both ends. That is, as shown in Fig. 5, the presence of the tank parts (23) and (24) creates non-effective parts (X) (X) through which air does not flow, and the effective part (Y) of the heat exchanger increases accordingly. There is a problem that the area becomes narrow and the heat exchange performance deteriorates.

On the other hand, in the past, in order to solve this problem, the heat exchange medium was made to make a U-turn inside the tube niremen, and the tank section was placed only at one end of the heat exchange section, and the effective heat was A proposal has also been made to expand the exchange section (Utility Model Publication No. 53-32375). However, even in this case, the generation of an ineffective part due to the tank part is inevitable, and the above problem cannot be completely solved.

Problems to be Solved by the Invention The present invention solves the above-mentioned problem, that is, the effective area for heat exchange is limited by the existence of the tank portion located at the end. It is an object of the present invention to provide a heat exchanger that secures a large effective heat exchange area and further improves heat exchange performance.

Means for Solving the Problems The present invention achieves the above-mentioned purpose by using a pipe material for the header, and by integrating the inlet and outlet headers into one pipe material, the above-mentioned heat can be reduced. This makes it possible to provide a high-performance and compact heat exchanger in which the effective exchange area is significantly reduced or almost eliminated.

That is, the present invention provides a stacked heat exchanger in which tube elements having a heat medium circuit and corrugated fins are alternately stacked, and an inlet and an outlet communicating with the heat medium circuit are provided on one side edge of the tube element. A single header tube is formed with a frontage at a position adjacent to the tube element, and the inside thereof is separated into two passages via a partition along the axial direction, and the two passages are connected to the inlet and outlet of the tube element, respectively. The gist of the present invention is a stacked heat exchanger characterized in that it is bonded and fixed to the tube element group so as to communicate with each other.

Embodiment In FIGS. 1 to 4 showing an embodiment of the present invention,
(1) is a plurality of plate-shaped tube elements each having a heat transfer medium circuit (1a) configured as a substantially continuous hollow portion inside; (2) is an adjacent tube element (1); Corrugated fins are interposed between them and are alternately laminated and joined together, (3) is a header tube that is made of only one metal tube and serves as the inlet and outlet of the heat medium, (4) ('5 ) are a heat medium inlet pipe and an outlet pipe connected to both the upper and lower parts of the header @(3).

In this embodiment, the tube element (1) is:
In one preferred embodiment, it is constructed from a roll-bonded panel made of aluminum. In other words, two aluminum plates are coated with an anti-crimping agent in a desired pattern, then stacked and crimped together, and the non-crimped portion is bulged by fluid pressure, so that a heat medium is formed inside the plate along the pattern. A circuit (1a) formed thereon is used. (1b
) is a peripheral crimped part, and (1G) is a partial crimped part in the middle.

In addition, the tube element (1) has a heating medium population (6) communicated with the central part of the side edges in the longitudinal direction, particularly on one side edge on the air outlet side, via the heating medium circuit (1a). and the outlet (7) are formed adjacent to each other at positions close to each other.

The header pipe (3) is as shown in Figures 1 to 3,
Both upper and lower ends are closed with roots (8), and the inside is separated into two left and right passages (10a) (10b) by a band-shaped partition wall (9) inserted along the axial direction. The heat medium inlet pipe (4) and the outlet pipe (5) are respectively attached to the holes (11) and (12) at the upper and lower ends which are provided in communication with both the passages.
10a)) (10b) so that the communication holes (13) and (14) provided at predetermined intervals in the peripheral wall portion of the header tube are aligned with the inlet (6) and outlet (7) of the tube element (1). (3) is vertically arranged and fixed at the center of the side edge of the tube element (1). In addition, each passage (10a) of the header pipe (3)
(10b) are provided with partition plates (15) and (16) in order to change the flow direction of the heat medium for each predetermined number of tube elements so that the medium flows in a meandering manner by μm. Therefore, this divides the heat medium circuit group into three, forming a so-called three-bath type heat exchanger.

The fins (2) are generally made of aluminum, and preferably have louvers cut and raised as shown in the figure.

In the above heat exchanger, when it is used as an evaporator, for example, the inlet pipe (
4) The refrigerant flows through one passage (1, Oa) in the header pipe.
is flowing into the country. As schematically shown in Figure 4, the heat medium circuit is divided into three groups by partition plates (15) and (16), so that the flow of this refrigerant is controlled in each of the multiple stages of tube elements (1). After changing direction and flowing in a meandering manner, it exchanges heat with the air (A) flowing between the tube elements (1) (1), and finally flows through the other passage (
10b) and is sent to a compressor (not shown), for example.

In addition, in the above embodiment, the tube element (
1) is shown in which it is constructed from a roll bond panel, but the present invention is not limited to this, and the heat medium circuit and the heat medium inlet/outlet are formed by combining two molded plates as in the conventional case. You may also use

However, the use of roll bond panels allows the pattern of the heat medium circulation circuit to be set freely, and also reduces the number of parts required for assembling the heat exchanger, which reduces the set time. It is advantageous in this respect.

Further, although the illustrated laminated heat exchanger is shown as a horizontal type, it is of course also permissible to configure it as a vertical type with tube elements arranged in a vertical direction.

Effects of the Invention In the above-described laminated heat exchanger according to the present invention, the header is composed of a pipe material, and only one pipe serves as an inlet header and an outlet header. The presence of a portion of the header does not block the flow of heat exchange air. In particular, since a single header pipe is provided, even if this header pipe is located within the air flow area on the air outlet side or inlet side of the air, it will not impede the air flow.

In addition, since fins can be attached to most of the entire periphery of the tube elements 1-, except for a very small part of the periphery, the ineffective part for heat exchange is the very crimped part of the periphery. This makes it possible to utilize more than 90% of the total area of the front surface of the heat exchanger as an effective area for heat exchange. This means that the heat exchange performance can be significantly increased, which in turn makes it possible to downsize the entire heat exchanger. Furthermore, since the inlet header and the outlet header are constructed from one common header pipe, costs can be reduced compared to the case where two header pipes are used for each header.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the heat exchanger according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a partial perspective view of the header pipe, and Fig. 4 is a diagram showing the flow of the heat medium. Circuit schematic diagram, 5th
The figure is a perspective view of a horizontal heat exchanger equipped with a conventional doron cup header. (1)...Plate tube element, (1a)...
Heat medium circuit, <2)... Corrugated fin, (3
)...Header pipe, (6)...Inlet, (7)...
Outlet, (9')...Bulkhead, (10a) (10
b) -...Aisle. Above Figure 1 Figure 2

Claims (2)

[Claims] (1) In a stacked heat exchanger in which tube elements having a heat medium circuit and corrugated fins are alternately stacked, an inlet and an outlet communicating with the heat medium circuit are located close to one side edge of the tube element. One header tube is formed with an opening and whose interior is separated into two passages via a partition wall along the axial direction, and the two passages are communicated with an inlet and an outlet of the tube element, respectively. A laminated heat exchanger characterized in that the tube elements are bonded and fixed to the tube element group. (2) The laminated heat exchanger according to claim 1, wherein the tube element is made of a roll bond panel.