JPS59191895A - Heat exchanger - Google Patents

Abstract

PURPOSE:To improve the heat transferring ability of a heat exchanger by completely separating gas from liquid in a header, by connecting chambers which are separated by a partition pannel, and by providing a gas/liquid separating body to the partition pannel of a header, in a heat exchanger having many heat transfer tubes and a pair of headers which connect both ends of the heat transfer tubes. CONSTITUTION:Headers 2 and 3 are connected to both ends of many heat transfer tubes which are juxtaposed in parallel, and a partition pannel 4 in order to separate the inside of a header into several stages of chambers is provided to the inside of each header 2 and 3. A U-type tube 6, of which end is positioned in the chamber 2b on the lower stage, for instance, is fitted to the partition pannel 4 as a gas/liquid separating body 5, which connects the chamber 2a on the upper stage of a header 2 to the chamber 2b on the lower stage. The steam and liquid being fed into the header 3 from the header 2 passing through heat transfer tubes 1 are separated from each other in the chamber 2a, and the liquid only drips into the chamber 2b passing through the U-type tube 6. With such an arrangement, the liquid only can be flowed from the chamber 2a to the chamber 2b, together with the steam only can be flowed through the heat transfer tubes 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an air conditioner, a condenser for a binary-cycle geothermal power generation plant, etc., which includes a large number of heat transfer tubes and headers that connect both ends of these heat transfer tubes, and heat medium vapor in the heat transfer tubes. The condensing heat exchanger is related to its header structure in %.

In conventional heat exchangers of this type, heat transfer performance deteriorates when condensate flows down into the heat transfer tubes, so in order to prevent this, holes are provided in the partition plate inside the header, and several holes are installed in the upper chamber of the header. It was designed to flow into the lower chamber. However, there was a drawback that not only liquid but also steam passed through the holes, reducing the heat transfer performance of the condenser.

An object of the present invention is to provide a heat exchanger having a complete header structure in which liquid and vapor are completely separated within the header and only the liquid passes through the partition plate and flows into the lower chamber.

In order to achieve the above object, the present invention includes a gas-liquid separator installed on the partition plate in the header, so that only the liquid in the upper chamber of the header flows into the lower chamber.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained below with reference to FIG. Headers 2 and 3 are connected to both ends of a large number of heat exchanger tubes 1 arranged in parallel. A partition plate 4 is provided in the headers 2 and 3 to partition the inside of the header into several chambers, and the partition plate 4 is provided with a U-shaped pipe as a gas-liquid separator 5, the tip of which is located in the lower chamber. 6 are attached to the upper chamber 2a and lower chamber 2b' of the header 2.
I have one on.

According to this embodiment, the steam and liquid flowing into the header 3 from the header 2 through the heat transfer tube 1 are transferred to the upper chamber 2 of the header 2.
Steam and liquid are separated in a, and only the liquid passes through a U-shaped pipe 6 attached to a partition plate 4 and enters a lower chamber 2b of the header 2.
flows down to. With this configuration, only steam can flow into the heat exchanger tube 1, and only liquid can flow from the upper chamber 2a of the header 2 to the lower chamber 2b.

The heat transfer performance of the heat exchanger can be improved.

2 to 4 show other examples of the gas-liquid separator 5 in the heat exchanger of the present invention. Figure 2 shows the U shown in Figure 1.
Instead of the shaped pipe, it is attached to the partition plate 4 and the tip is the header 2.
The inner pipe 6a and header 2 located in the lower chamber 2b of
The double tube 7 is attached to the bottom of the lower chamber 2b and has its tip located above the lower chamber 2b, and has an outer tube 7b with an inner tube 7a disposed inside the tube. Further, the example shown in FIG. 3 is one in which the torsion tube 8 provided in the torsion portion 88 is constructed in multiple ways. Further, the example shown in FIG. 4 is configured with a liquid flow down pipe 9 from the upper stage chamber 2a and a liquid flow down pipe 10 from the lower stage chamber 2b, and the lower end of the liquid flow down pipe 9 from the upper stage chamber 2a is located in the lower stage chamber. The height of the inlet of the liquid flow down pipe 100 from 2b is lowered.

Therefore, the liquid flow down tube 9 enters the liquid accumulated in the chamber, and acts as a trap. The above structure also has the same effect as the structure shown in FIG. Furthermore, if the structure shown in FIG. 4 is adopted, the same effect can be obtained even when the chamber has multiple bars.

As explained above, according to the present invention, liquid and steam in the header can be completely separated, and steam does not flow between chambers, improving heat transfer performance and making the heat exchanger more compact. It is possible to make changes.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of a main part showing one embodiment of a heat exchanger according to the invention, and FIGS. 2 to 4 are sectional views of main parts showing other embodiments of a header structure according to the invention. DESCRIPTION OF SYMBOLS 1... Heat exchanger tube, 2, 3... Header, 4... Partition plate, 5... Gas-liquid separator %6... U-shaped tube, 7... Double pipe S8... Twisted pipe, 9, 10...Liquid flow down pipe. Fuck 11 animals 71 prisoners 73 evil

Claims (1)

[Claims] In a heat exchanger that has a large number of heat exchanger tubes arranged in parallel and a header that connects both ends of these heat exchanger tubes, and condenses heat medium vapor in the heat exchanger tubes, a gas-liquid separator is installed on the partition plate of the header. A heat exchanger characterized in that chambers partitioned by partition plates are communicated by the gas-liquid separator.