JP2582409Y2 - Stacked heat exchanger - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated heat exchanger used for a cooling device for an automobile.

[0002]

2. Description of the Related Art Conventionally, as a laminated heat exchanger, for example, as shown in FIGS. 9 to 11, a thin tube element having a substantially U-shaped flow path (for convenience of explanation, a thin tube element is used). Forming plates 1 and 2 to be formed
Only) are stacked with the fins 3 interposed therebetween, and a pair of manifolds 4 (one of the manifolds is not shown) is interposed between the forming plates 1 and 2 forming the tube element, thereby providing heat exchange. Some media are circulated. The forming plates 1 and 2 can form a thin tube element by joining different forming plates each having substantially the same shape.

[0003]

However, in the conventional laminated heat exchanger, since the distribution and collection chamber 5 and the through chamber 6 of the manifold 4 are completely separated, the supply pipe for the heat exchange medium is provided. The heat exchange medium can only be taken in and out of the distribution and collection chamber 5 which communicates directly with the opening 7 of the manifold 4 connecting the heat exchange medium. Therefore, in order to achieve a so-called counterflow in which a heat exchange medium flows from the leeward side to the leeward side so as to obtain high heat exchange performance, the opening 7 of the manifold 4 is provided on the leeward side of the heat exchanger. It is necessary to arrange and connect the supply pipe of the heat exchange medium to this. As a result, for example, when the expansion valve is arranged on the windward side of the heat exchanger in order to prevent dew condensation generated on the expansion valve from scattering to the human body, the expansion valve is connected to the supply pipe of the heat exchange medium. If it is attempted to connect to the manifold 4 via the supply pipe, it is necessary to connect the supply pipe so as to be detoured from the windward side to the leeward side, and there is a problem that the piping is troublesome and the cost is increased.

In view of the above problems, the present invention provides a laminated heat exchanger having a large degree of freedom in piping that can easily realize a so-called counter flow even when a heat exchange medium is supplied from the windward side. It is in.

[0005]

In order to achieve the above object, a laminated heat exchanger according to the present invention is formed by laminating a plurality of thin tube elements having a substantially U-shaped flow path via fins, A layered heat source in which ends of the flow paths in the same direction are communicated with each other, and a pair of manifolds connected to a heat exchange medium supply pipe are interposed between the tube elements to circulate the heat exchange medium. In the exchanger, at least one of the manifolds, at least one end of the flow path of the tube element adjacent to both sides is communicated with each other, a penetration chamber through which a heat exchange medium passes, and a tube element adjacent to both sides. The other end of the flow path communicates with each other, and communicates with the opening connecting the supply pipe through a bypass formed around the through chamber. Distribution, there as a distribution collection chamber, and the provided configuration to collect. In addition, one of the manifolds has a through chamber that allows the heat exchange medium to pass therethrough by allowing one ends of the flow paths of the tube elements adjacent on both sides to communicate with each other,
A distributing and collecting chamber for distributing and collecting a heat exchange medium by communicating the other end of the flow path of the tube element adjacent on both sides with each other and directly communicating with the opening connecting the supply pipe; May be adopted. Further, at least a part of a side wall part that partitions a through chamber and a distribution collection chamber of the manifold may be formed by an extending part extending from an opening edge of a flow path of the tube element.

[0006]

Therefore, according to the first aspect of the present invention, the heat exchange medium is distributed and collected from the distribution and collection chamber communicating with the opening of the manifold via the bypass formed around the through chamber. . According to the second aspect, the heat exchange medium is distributed and collected through the distribution and collection chamber directly communicating with the opening of the manifold. Further, according to the third aspect, the penetrating chamber and the distribution / collection chamber are partitioned by the extending portion extending from the opening edge of the tube element, and a bypass is formed.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an embodiment of the present invention; FIG. The stacked heat exchanger according to the present embodiment is almost the same as the above-described conventional example, and the difference is the connection structure of the manifold 10. That is, as shown in FIG. 2, the manifold 10 is formed by joining two press-formed members, and is formed on the side of the opening 11 connecting the supply pipe of the heat exchange medium and the forming plate 1 adjacent to both sides. , 2 are provided with a through chamber 12 which communicates with one end of the flow path of the tube element and allows the heat exchange medium to pass therethrough.

Further, the other end of the flow path of the tube element formed by the molding plates 1 and 2 adjacent on both sides is communicated with the manifold 10 and the through chamber 1 is formed.
2 through a detour 13 formed around the opening 11.
Distribution chamber 14 for distributing and collecting the heat exchange medium in communication with the
Is provided.

Therefore, according to the present embodiment, when the heat exchange medium is supplied from the opening 11 of the manifold 10, the heat exchange medium flows from the distribution and collection chamber 14 via the bypass 13 to the tube formed by the molding plates 1 and 2. It flows into a substantially U-shaped channel of the element. Therefore, even if the opening 11 of the manifold 10 is open on the windward side, a so-called counterflow in which the heat exchange medium flows from the leeward side to the leeward side can be realized.

Further, in the above-described embodiment, the case where the side wall portion separating the through chamber 12 and the detour 13 is formed by the manifold 10 itself has been described. However, the present invention is not limited to this. As shown, the extending portions 8 and 9 extending from the opening edges of the forming plates 1 and 2 may be formed by joining by electric welding, edge winding, or the like.

Further, in the above-described embodiment, the case where the heat exchange medium is circulated by the manifolds 10 having the same shape has been described. However, the present invention is not limited to this. May be used in combination. The manifold 20 includes:
An annular detour 23 having a distribution / collection chamber 22 directly communicating with the opening 21 and communicating with the distribution / collection chamber 22
A through chamber 24 surrounded by is formed. Note that the connection with the molding plates 1 and 2 is the same as described above, and thus the description is omitted.

According to the present embodiment, the manifolds 10, 2
By using 0 in combination, there is an advantage that the degree of freedom of the piping is further increased.

As shown in FIGS. 5 to 7, the manifold 20 also has a side wall that separates the distribution collecting chamber 22 and the through chamber 24 by an extension extending from the opening edges of the forming plates 1 and 2. A part may be formed.

[0014]

As is apparent from the above description, according to the stacked heat exchanger of the first aspect of the present invention, the opening of the manifold connecting the supply pipe of the heat exchange medium opens on the windward side. Even so, since the distribution and collection chamber is located on the leeward side, canter flow can be easily realized, and piping is not required and the cost is reduced. According to the second aspect, the manifold in which the distribution and collection chamber communicates with the opening via the detour and the manifold in which the distribution and collection chamber communicates directly with the opening are combined. There is an advantage that it becomes even larger. Further, according to the third aspect, there is an effect that the manufacture of the manifold becomes easy.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a stacked heat exchanger according to an embodiment of the present invention.

FIG. 2 is a perspective view of the manifold shown in FIG.

FIG. 3 is a partially cutaway perspective view of the stacked heat exchanger shown in FIG.

FIG. 4 is a sectional view of the laminated heat exchanger shown in FIG.

FIG. 5 is a sectional view showing a modified example of the stacked heat exchanger of FIG.

FIG. 6 is a sectional view showing another modified example of the stacked heat exchanger of FIG. 1;

FIG. 7 is a sectional view showing another modified example of the stacked heat exchanger of FIG. 1;

FIG. 8 is a perspective view showing a manifold of the stacked heat exchanger according to the present invention.

FIG. 9 is a partial perspective view of a laminated heat exchanger according to a conventional example.

10 is a partially cutaway perspective view of the stacked heat exchanger shown in FIG.

FIG. 11 is a sectional view of the stacked heat exchanger shown in FIG.

[Explanation of symbols]

1, 2, ... molding plate, 8, 9, ... extension part, 10, 20, ...
Manifold, 11, 21 ... opening, 12, 24 ... penetration chamber, 13, 23 ... detour, 14, 22 ... distribution collection chamber.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F28D 1/03 F28D 9/00 F28F 9/02 301

Claims (3)

(57) [Scope of request for utility model registration] 1. A laminar tube element having a substantially U-shaped flow path is laminated in a plurality of stages via fins, and ends of the flow path in the same direction are communicated with each other, and a heat exchange medium is supplied. In a laminated heat exchanger in which a pair of manifolds connected to a pipe are interposed between the tube elements to circulate a heat exchange medium, at least one of the manifolds includes:
A penetration chamber that allows one end of the flow path of the tube element adjacent to both sides to communicate with each other and allows the heat exchange medium to pass through, and the other end of the flow path of the tube element adjacent to both sides to communicate with each other, and A stacking and distributing chamber for distributing and collecting a heat exchange medium by communicating with an opening for connecting a supply pipe through a bypass formed around the through chamber. . 2. One of the manifolds includes a through chamber through which one end of a flow path of a tube element adjacent on both sides communicates with each other to allow a heat exchange medium to pass therethrough; 2. A distribution collection chamber for distributing and collecting a heat exchange medium by communicating end portions thereof with each other and directly communicating with said opening connecting said supply pipe. Laminated heat exchanger. 3. A method according to claim 1, wherein at least a part of a side wall part separating the through chamber and the distribution collection chamber of the manifold is formed by an extending part extending from an opening edge of a flow path of the tube element. The stacked heat exchanger according to claim 1.