JPS5928210Y2 - Heat exchanger - Google Patents

Description

[Detailed description of the invention] The present invention relates to a heat exchanger that is easy to manufacture, increases the flow velocity of the heat medium flowing outside the pipe, and is designed to have extremely high thermal efficiency. It is related to vessels.

Conventional heat exchangers have a large number of pipes arranged in parallel inside a cylinder, so-called double pipe type heat exchangers, and one outer cylinder with a large number of pipes arranged in parallel with a gap between adjacent pipes. There are so-called shell tubes.

However, the former has a complicated structure, is troublesome to manufacture, and is expensive, and the latter has a slow flow rate of the heat medium flowing inside the outer cylinder outside the pipe, resulting in poor heat exchange efficiency. was.

Therefore, in the low-temperature plant proposed in Japanese Patent Publication No. 43-26656, multiple pipes arranged in a dense hexagonal manner are surrounded by an outer cylinder, and both ends of the pipes are separated from the ends of adjacent pipes. A structure has been disclosed in which the fluid is diffused into adjacent pipes, and the diffusion portion of this pipe is also surrounded by an expanded portion connected to the outer cylinder, so as to increase the flow velocity of the fluid flowing outside the pipe.

However, in this structure, in order to increase the heat exchange distance in order to increase thermal efficiency, the length of each of the plurality of pipes must be increased, so the overall size is reduced. This had the drawback of making it extremely long and large.

In view of the above, the present invention is designed to be easy to manufacture, increase the flow velocity of the heat medium flowing outside the pipe, and increase the thermal efficiency over the distance over which heat exchange takes place. It was devised to increase the length of the pipes, and its gist is that at least seven pipes with the same diameter and circular cross section are arranged in a dense hexagonal arrangement, and the entire circumference of the group of pipes is covered with an outer cylinder. enclosing the pipe, and diffusing both ends of the pipe protruding outward from the end of the outer cylinder to the adjacent pipe so as to separate them from the ends of the adjacent pipes, and diffusing the pipe so that the diffusing portion of the pipe also extends to the outer cylinder. At the same time, both ends of each of the pipes are made to protrude from an expanded part connected to the outer cylinder, and the protruding pipe ends are appropriately connected with a U-shaped connecting part to make the pipe into a single long pipe. One heat medium to be heat exchanged can flow through the inside of the pipe, and the other heat medium is connected to the space between the pipes and the space between the pipes and the outer cylinder by pressing a button inside the outer cylinder. It consists in making it possible to distribute.

An embodiment of the present invention will be described below with reference to the drawings. At least seven pipes 1 such as steel pipes or steel pipes with the same diameter and circular cross section are arranged in a dense hexagonal manner with their circumferential surfaces in contact with adjacent pipes. The entire periphery of the group is surrounded by an outer cylinder 2, the inner wall of the outer cylinder 2 is brought into contact with the surface of the outermost pipe of the pipe group, and the outer cylinder 2 protrudes outward from the end of the outer cylinder 2. The end of the pipe 1 is diffused into the adjacent pipe so as to be separated from the end of the adjacent pipe, and the diffused portion of the pipe 1 is also surrounded by expansion parts 3 and 4 that are connected to the outer cylinder 2, and the pipe 1 is 1 and the extended portions 3 and 4.
The ends of these pipes are connected as appropriate by a U-shaped connecting part 15 to connect the pipes 1 into a single long piece, and two of the end faces are opened and one of them is connected. A pipe end portion 18 for injecting a heat medium and a pipe end portion 19 for discharging one heat medium are formed so that one heat medium to be heat exchanged can flow inside the pipe 1, and a pipe end portion 19 is formed for discharging one heat medium. A space 5 between the pipes 1 and 1,
The present invention is implemented by constructing a heat exchanger that allows the other heat medium to flow through the space 6 between the pipe 1 and the outer cylinder 2.

In the figure, 7 is the other heat medium inlet provided in the extension part 3, 8 is the other heat medium outlet provided in the extension part 4, and 16 and 17 are the ends of the extension parts 3 and 4. This is the mirror plate.

In order to implement the present invention, the cross-sectional shape of the outer cylinder 2, which corresponds to the outer circumference of the whole pipes, can be approximately hexagonal as shown in Fig. 4, circular by combining many pipes, or approximately triangular. Good too.

The heat exchanger of the present invention is as described above, with one heat medium flowing inside the pipes 1, and a space 5 between the pipes 1 and a space 5 formed between the pipes 1 and the outer cylinder 2. Since the other heat medium that exchanges heat with the one heat medium is circulated through the space 6, the flow rate of the other heat medium within the outer cylinder 2 can be increased, and the efficiency of heat exchange can be improved. I can do it.

The pipes 1 housed in the outer cylinder 2 are arranged in a dense hexagonal pattern, and the arrangement is stable with this alone, so it is possible to hold the pipes 1 in a stable state in the outer cylinder 2 and press the button without using a spacer or the like. can.

Further, in the present invention, the ends of each pipe are diffused with respect to the adjacent pipes, and each of the two ends of the pipe 1 is made to protrude from the expanded portions 3 and 4 surrounding this diffused portion. By appropriately connecting the pipe 1 with the kU-shaped tubular connecting part 15 and making the pipe 1 continuous into a single long piece,
Although the conventional size is used, the distance over which heat exchange is performed is increased to greatly improve thermal efficiency, and furthermore, by using the connecting portion 15, manufacturing becomes extremely easy.

As explained above, according to the present invention, manufacturing is extremely easy, the flow velocity of the heat medium flowing outside the pipe can be increased, and heat exchange can be performed with the same size as the conventional one. Since it is possible to increase the distance through which the heat is applied, it has practically beneficial effects such as extremely high thermal efficiency.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a partially enlarged front sectional view, and FIG. 3 is a partial sectional view taken along line A-A in FIG. Figure 4 is B-B, which can be clicked on Figure 2.
FIG. DESCRIPTION OF SYMBOLS 1...Pipe, 2...Outer cylinder, 3 and 4...Expansion part, 5 and 6...Space, 7...Other heat medium inlet, 8
...Other heat medium spout, 13...One heat medium injection port, 14...One heat medium spout, 15...
Connecting parts, 16 and 17... End plate, 18 and 19... Pipe ends.

Claims (1)

[Scope of utility model registration request] At least seven pines with the same diameter and a circular cross section are arranged in a dense hexagonal pattern, the entire circumference of the group of pipes is surrounded by an outer cylinder, and both ends of the pipes protruding outward from the ends of the outer cylinder are adjacent to each other. The end portions of the pipes are also diffused with respect to the adjacent pipes so as to be separated from each other, and the diffusion portion of the pipe is also surrounded by the diffusion portion connected to the outer cylinder, and both ends of each of the pipes protrude from the expanded portion connected to the outer cylinder. The protruding ends of the pipes are appropriately connected with a U-shaped tubular connecting part to make the pipe continuous into a single long pipe, and one of the heat mediums to be heat exchanged can flow inside the pipe. A heat exchanger characterized in that a button is provided in the outer cylinder so that the other heat medium can flow through the space between the pipes and the space between the pipes and the outer cylinder.