JPS5855332Y2 - Heat exchanger - Google Patents

Description

[Detailed description of the invention] This invention consists of a cylindrical body in which a heating medium or a refrigerant, that is, a heat exchange medium, flows in a meandering manner, and a partition chamber formed through end plates at both ends of the body. The chamber is divided into a plurality of liquid chambers, and a partition chamber is formed between the liquid chamber where the fluid to be heat exchanged first flows into and the liquid chamber where the fluid to be heat exchanged last flows out, supplying a heat exchange medium, and separating high-temperature fluid and low-temperature fluid. This invention relates to an improvement in a heat exchanger that prevents heat exchange with a fluid.

A cylindrical main body whose openings at both ends are closed with end plates, a large number of flow pipes passing through both end plates, and a cylindrical main body configured to allow a heat exchange medium to flow in a meandering manner, and a cylindrical body which is attached and fixed to the outside of the above-mentioned both end plates. The partition chamber is formed by the end cap and allows the fluid to be heat exchanged, that is, the fluid to be heat exchanged, to flow through the flow pipe, and both of the partition chambers are divided into the same number of liquid chambers by partition plates arranged in the radial direction. The liquid chambers are divided and arranged so that the fluid to be heat exchanged flows through the flow pipe, reaches the liquid chamber of the corresponding partition chamber, and flows through the flow pipe in a U-turn again, which is called a plurality of fluid passes. Furthermore, a partition chamber is provided between the first liquid chamber into which the fluid flows and the last liquid chamber to allow the heat exchange medium to flow directly, thereby preventing heat exchange between the fluids and preventing heat exchange caused by local temperature differences. A heat exchanger designed to prevent distortion due to thermal stress has been proposed, but in this heat exchange, it is difficult to remove the drain in the upper heating side partition chamber, and the supply of heat exchange medium to the partition chamber and the There are disadvantages such as the complicated piping structure for discharge.

This invention was made for the purpose of eliminating the above-mentioned drawbacks and providing a heat exchanger that functions more rationally, and will be explained below based on the drawings showing embodiments thereof.

That is, in the embodiment shown in FIG. 1, 1 is a cylindrical main body, the openings at both ends of the main body 1 are closed by an end plate 2, and many heat exchange target tubes are expanded and fixed through the end plate 2. A fluid flow pipe 3 and a plurality of heat transfer pipes 4 communicating with upper and lower partition chambers (described later) are provided, and a heat exchange medium 5, an outlet 6, and a heat exchange medium flowing from the above 5 meander through the main body 1. A baffle plate 7 is disposed for effectively exchanging heat with the heat exchange fluid flowing in the flow pipe 3.

Reference numeral 8 denotes end covers fixedly connected to both ends of the main body 1, and the end covers 8 form a pair of partition chambers 9, 10 with upper and lower sides facing each other. As shown in the figure, any number of partition plates 11 are arranged radially.
Liquid chambers 12 and 13 are divided into upper and lower portions of the same number by the above-mentioned flow pipes 3, and partition chambers 14 and 15 are communicated with each other through the heat transfer tubes 4.

The number of the liquid chambers 12.13 determines the number of U-turn-like flow-throughs of the fluid to be heat exchanged, and in order to perform the U-turn-like flow-through, the liquid chambers 12.13 are arranged circumferentially. They are formed by shifting their positions vertically.

That is, the fluid flowing through the first liquid chamber 13 of one of the partitioned chambers 10 and the flow pipe 3 that flows into this and communicates with the liquid chamber 13,
In the liquid chamber 12 of the other partitioned chamber 9, the flow is changed in the circumferential direction, and the liquid flows through the other flow pipe 13 through a U-turn, and flows through it.
Further, the recirculation operation of making a U-turn in another liquid chamber is repeated and the liquid is discharged, and the first liquid chamber 13 of one of the partitioned chambers 10 has an inlet 16 for the fluid to be heat exchanged, and the other The last liquid chamber 12 of the partition chamber 9 has a fluid outlet 17.
is provided.

In the embodiment, an example is shown in which a three-pass U-turn circulation of the fluid is performed.

18 in the figure is a heat exchange medium inlet provided in the partition wall chamber 14;
Reference numeral 19 denotes an outlet provided in the partition chamber 15, and these partition chambers 14 and 15 separate the liquid chamber into which the fluid first flows from the last liquid chamber.

As described above, this device includes a main body 1 which is closed with an end plate 2 and has a large number of flow pipes 3 penetrating both end plates 2, and an end cap 8 which is bonded and fixed to both ends of the main body 1. A partition 9 defined by the end plate 2,
10, and the partition chambers 9 and 10 include a plurality of liquid chambers 1 designed to perform a U-turn-shaped circulation of the fluid to be heat exchanged.
A partition chamber 14.15 is provided between the liquid chamber which serves as an inlet of the fluid and the liquid chamber which serves as an outlet of the fluid, into which a heat exchange medium flows. The partition chamber 15 has only an inlet and an outlet for the same, and a flow path for the heat exchange medium is formed inside the main body 1, so that the high temperature fluid that has already been heat exchanged with the low temperature fluid flowing into the liquid chamber The fluid is completely isolated by the presence of the partition chamber, and there is no mutual heat exchange effect; on the contrary, the fluid actively exchanges heat with the heat exchange medium supplied into the partition chamber, so its efficiency is extremely high. be.

Further, since the presence of the partition wall chamber prevents the occurrence of local temperature differences, no distortion due to thermal stress occurs.

Furthermore, according to this invention, it is possible to completely remove the drain in the upper partition chamber, and an outlet for the heat exchange medium in the upper partition chamber and an inlet for the medium in the lower partition chamber are not required. There is no need for a stand, etc., and the structure is simplified.

In the embodiment shown in FIG. 1, the heat exchanger tubes 4 have the effect of reheating the heat exchange medium heading toward the lower partition chamber.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing an embodiment of this invention, FIG. 2 is a cross-sectional view of the upper partition in FIG. 1, and FIG. 3 is a cross-sectional view of the lower partition. 1 is the main body, 2 is the end plate, 3 is the flow pipe, 8 is the end cover, 9, 10
12.13 is a liquid chamber, 14.15 is a partition chamber.

Claims (1)

[Scope of utility model registration request] The openings at both ends of a cylindrical body having an inlet 5 for the heat exchange medium on one end and an outlet 6 for the heat exchange medium on the other end are closed with end plates 2.2, and the end plates 2. A heat exchange main body 1 comprising a large number of flow pipes 3 for heat exchange medium passing through the heat exchange body 1.
and end covers 8, 8 forming partition chambers 9, 10 partitioned through the flow pipes 3 passing through the respective end plates 2, 2 at both ends of the main body 10, and inside these end covers 8. . The heat exchange medium supplied to the liquid chamber 12 of the first liquid chamber 12 passes through the first liquid chamber 13 of the other partitioned chamber through the flow pipe 3 opening thereto, and then sequentially passes through the circumferentially adjacent flow pipes 3. The liquid chamber is constructed so that the liquid flows through several passes while making a U-turn to the final liquid chamber, and a narrow partition chamber is provided between the first liquid chamber 12 and the last liquid chamber 13 in both partition chambers 9 and 10. 14. Heat exchanger tube 4 with 15 interposed
The end caps 8, 8 that cover each of the partition chambers 14 and 15 are provided with an inlet 18 for the heat exchange medium on one side and an outlet 19 on the other side so that the heat exchange medium can flow therethrough. A heat exchanger characterized in that a part of the heat exchange medium sent into the main body 1 is also sent into the partition chambers 14 and 15.