JPS6155596A - Heat exchanger - Google Patents

Abstract

PURPOSE:To provide a sufficient agitation of heat exchanging medium and enable an efficiency of heat exchanging operation to be improved by a method whrein a longitudinal cylindrical header having communication holes is arranged between both ends of the adjoining tube elements and a heat exchanging medium accumulation chamber is arranged between both ends. CONSTITUTION:When a heat exchanger is used as a car cooler evaporator, coolant is guided from an inlet pipe 6 into the tank chamber at one end of the lower tank T2, ascended in a group of the heat exchanging medium passages 1a of a plurality of tube elements 1 at the end part of the core, thereafter reversed in the upper tank T1 and descended down in the group of the next stage of heat exchanging passages and further reversed again in the lower tank T2, lifted up in the group of the next passages and then fed out of the unit from the outlet pipe 7. The coolant enters the accumulation chamber 5 in the header member 4 when reversed, and sufficiently agitated and supplied to the next stage of group of the heat exchanging medium passage, so that an over-heated gas component of the coolant and wet gas component are not partially balanced in each of the tube elements 1 and thus an entire superior heat exchanging operation can be realized and an efficiency of heat exchaning operation can be improved.

Description

[Detailed Description of the Invention] - Industrial Application Field This invention is applicable to laminated heat exchangers [! /! The present invention relates to a type of heat exchanger in which a plurality of plate-like tube elements each having a heat exchange medium passage are stacked together with an air flow gap containing fins between them.

BACKGROUND OF THE INVENTION Conventional stacked heat exchangers of this type are generally shown in FIG.
: and heat exchange as shown in Figure 6! Y! Media passage (18)
A plate-shaped tube element (11) is formed by joining two molded plates l-(11a) (11a) facing each other, which are press-molded into a shallow dish shape to form a plate-shaped tube element (11), and this tube Element (1
1) and Korgu 1-type fins (12) are alternately arranged, and each adjacent tube elm l-(1
1) By making the tank parts (13) and (14) formed in a bulge shape at both ends of (11) one or more heavy pile holes (17) bored in their walls. An inlet pipe (15) and an outlet pipe (1G) for a heat exchange medium such as a refrigerant are connected to one end of the communicated tank section, respectively.

Recently, a partition plate has been installed inside the tank in order to increase the heat exchange efficiency by increasing the passage distance of the heat exchange medium.
A method has been proposed in which a single continuous medium passage is divided into 11 passages, and a heat exchange medium such as a refrigerant is passed through in a meandering manner (for example, Jitsugaku nH)/11- 684
No. 7, Jikko No. 58-22056).

Problems to be Solved by the Invention However, in the conventional heat exchanger as described above, the tank portions of each tube element are connected to each other through a plurality of communication holes (11
), the stirring action of the heat exchange medium in each tank is only insufficient, so that, for example, in each tube element, the external There was a point where the liquid phase content of the refrigerant was small on the inlet side of the circulating heat exchange air, reducing the overall heat exchange rate.

Means for Solving the Problems The present invention is intended to solve the above-mentioned problems, and includes the use of a separate heat exchange medium between both ends of the tube membrane 1 adjacent to the tube 14. form a pool of seedlings,
Here, sufficient heat exchange (the moxibustion medium is stirred) is made so that it can be supplied sequentially from C to the heat exchange medium passage group.

That is, the heat exchanger according to the present invention has several 7V plate-like tube elements each having a heat exchange medium passage therein, stacked alternately in several stages such as corrugated fins, and the heat exchange medium is arranged in a meandering pattern around the passage. In a stacked heat exchanger designed to improve circulation, when a small number of communication holes are bored at both ends of the tube elements, the communication holes are formed between both ends of adjacent tube elements. A short cylindrical header member with an oval cross section is interposed in a manner that encompasses the hole, and a reservoir chamber for the heat exchange medium is formed between both ends of adjacent tube elements. It is characterized by υ゛rub.

Embodiment In the heat exchanger according to the present invention shown in FIG. 1, (1)
is a plate-shaped duplex element made of aluminum roll bond panel lpr, and J3 and 3 in Fig. 2 are
As shown in the figure, there is a predetermined pattern of heat exchange medium passages (1a) formed by expansion tubes on the right side, and one or more heat exchange medium passages (1b) arranged horizontally on both the upper and lower ends of the header (1b). A communication hole (2) is recessed for a predetermined distance. (3)
(4) are the tube elements (1) and the Korgu 1-type fins stacked alternately with the tube elements (1); (4) are the adjacent booup elements (1); (1b) This is a short cylindrical header member interposed between (1b) and integrally joined, and as shown in FIG.
It surrounds the outside and forms a reservoir for the heat exchange medium inside. Therefore, the heat exchanger core'
: Part of the header (1) of the above tube element (1) is shown below.
b) and the header part JrA (4) form an upper tank (T1) and a lower tank (T2) that are continuous with each other.

Moreover, inside these tanks, there is a tube element (1
) A partition plate (10) that blocks the communication hole (2) and the header member (4) at a predetermined position is provided with a step 11, which divides the heat exchange medium passage into a group of passages around the visual periphery. is,
The heat exchange medium is made to flow in a meandering zigzag pattern. (6) is heat exchange 1! ! ! The medium inlet pipe passes through the lower tank (T2) to the position of the partition plate (10), and is connected to the blank space of the compartment tank at the end. (7
〉 is a single heat exchanger medium outlet pipe, which is connected to one end of the upper tank (T1). (8> (8) is a closing plate that closes off the unnecessary communication hole (2), and ku) is a guard plate.

In addition, a roll bond panel made by combining the above-mentioned tube elements 1 to (1) (11; By inflating it with pressure, the body passageway (1a
) and a part of the header (1b).

In the above-mentioned 1/1, 1/1 AC 1-mome reactor, when this is used as a smoke generator for a car cooler, the refrigerant flows from the inlet f'N (6) to the lower tank (T2) at one end of the tank. It will be introduced in the near future. This refrigerant is first passed through the group of heat exchange medium passages (1a) of the tube element (1) with 1 number of tubes (11'-i'), and then the upper part of the tube element (1). The heat exchange medium is reversed in the tank (T2), moves down through the next group of heat exchange medium passages, then reversed again in the lower tank (T2), ascends through the next group of passages, and exits from the outlet pipe (7). It is sent out of the vessel. Here, at the time of the reversal, the refrigerant enters the reservoir space (5) in the header member (4) and is sufficiently agitated, and is then supplied into the next group of heat exchange medium passages. 1 in each tube niremen 1 to (1)
There is no partial imbalance between the superheated gas component and the moist gas component of the soot, and as a result, a good heat exchange effect can be achieved over the rest period.

115, and in the illustrated embodiment tube element 1-(1
) is formed by -(, 1, +, l) on a roll bond panel, but the present invention is not limited to this, and heat exchange is possible by combining two molded plates 1- in the same way as in the past. Furthermore, although the stacked type λ () exchanger shown in the figure is shown as a vertical type, it can be changed to a horizontal type with the tube elements arranged horizontally. (Of course it is also allowed to form 1°4.
When using roll bond panels, heat exchange I! /! Medium: The ability to freely set the pattern of one circuit, and the reduction in the number of parts required for assembling the heat exchanger, and its cellar 1~
This is advantageous in that it can save time.

Effects of the Invention In the heat exchanger according to the present invention, as described above, in the stacked heat exchanger in which the heat exchange medium flows in a meandering manner, both upper and lower ends of the adjacent tube elements (1) (1) A short cylindrical header member with an oblong cross section (
4) is interposed, and this is communicated through a plurality of communication holes (2) bored in the wall of the header part (1b), thereby forming a reservoir chamber (5) for the heat exchange medium therein. It has been done. Therefore, the refrigerant and other heat exchange media are sufficiently stirred within this reservoir chamber (5). Since the heat exchange medium is sequentially supplied to the heat exchange medium passage group in this sufficiently stirred lζ state, for example, in the case of an evaporator, J3
According to J:
Such adverse effects can be avoided, the heat exchange efficiency can be improved, and the heat exchanger core can be made more compact.

[Brief explanation of drawings]

FIG. 1 is a front view of a partially crushed heat exchanger according to an embodiment of the present invention, FIG. 2 is a side view of a tube element used in the heat exchanger of FIG. 1, and FIG. Figure lll-
FIG. 4, which is a sectional view taken along the lff line, is a diagonal 62 view of one member of the header. 1. Figures 5 and 6 show a conventional laminated heat exchanger, so Figure 5 is an overall perspective view, and Figure 6 is a diagram of the tube l-4'+S construction used in it. This is a front view seen from the inner surface of the molded plate. (1)...Tube element, (1a)...Heat exchange medium passage, (2)...Communication hole, (3)...Fin, (4)...Header member, (5) ... Heat exchange medium reservoir, (6) ... Inlet pipe, (A) ... Outlet pipe,
(10)...Partition plate, (T1)...Upper tank,
(T2)...lower tank. Patent applicant: Showa Aluminum Co., Ltd.
Person Patent Attorney Hisayoshi Shimizu Figure 5 Figure 6

Claims (2)

[Claims] (1) A laminated structure in which a plurality of plate-like tube elements each having a heat exchange medium passage therein are alternately stacked with corrugated fins in several stages, and the heat exchange medium is made to flow in a meandering manner around the passage. In this type of heat exchanger, a plurality of communication holes are bored at both ends of the tube element, and a short section having an oval cross section is formed between both ends of adjacent tube elements in a manner that includes the communication holes. A heat exchanger characterized in that a cylindrical header member is interposed to form a reservoir chamber for a heat exchange medium between both ends of adjacent tube elements. (2) The heat exchanger according to claim 1, wherein the plate-like tube element is a roll bond panel.