JPS6039960B2 - Shell and plate heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to improvements in shell-and-plate heat exchangers.

Due to its structure, this type of shell-and-plate heat exchanger has a problem in that when the flow rate of fluid flowing through the container decreases, the flow velocity within the container decreases, resulting in a decrease in heat transfer performance.

In order to eliminate the above-mentioned problems, in the past, the flow velocity was maintained constant by modifying the plate in accordance with the change in the flow rate of the fluid flowing through the container.

However, this method has the disadvantage that it takes time and effort to manufacture the plate and is expensive.

In view of the above-mentioned drawbacks of the conventional structure, this invention has developed a system that can solve this problem very easily.Hereinafter, the structure of this invention will be described with reference to an embodiment shown in the drawings.

In FIGS. 1 and 2, 1 is a container, 2 is a heat exchange element, and 3 is a partition plate.

The container 1 is sealed and has an inlet 4 for one fluid, such as water, at its upper part, and an outlet 5 at its lower part.

As shown in FIG. 3, the heat exchange element 2 has a hollow chamber 2c formed inside by welding the periphery of a pair of plates 2a and 2b, and has through holes 6 and 7 at the top and bottom.

Each heat exchange element 2 is mounted in multiple mirrors around the upper and lower through holes 6, 7 via ring packings 8, 9, and support bars 10, 11 provided at the center of both side walls la, lb inside the container 1.
is supported by a bolt 12 that fastens one end plate lc of the container 1.
It is pressed against the other end plate ld by tying it with cotton.

The double mirror tightening of each heat exchange element 2 may be performed independently of the container 1. The end plate lc of the container 1 is provided with an inlet row 3 and an outlet 14 for flowing the other fluid, such as fluorocarbon, into the hollow chamber 2c of each heat exchange element 2.

As shown in FIG. 4, the partition plate 3 is formed to fit inside the container 1, and has one or more lotus through holes 15 in a part thereof, as well as upper and lower through holes 6 of the heat exchange element 2. , 7, and notched grooves 3a, 3b at the center of both sides thereof, which are fitted to support bars 10, 11 of both side walls la, lb of the container 1.

At the center of both sides of each heat exchange element 2, as shown in FIG.
Notch grooves 2d and 2e are provided to fit the support bars 10 and 11 on both side walls la and lb.

A fluid such as chlorofluorocarbon is introduced into the hollow chamber 2c of each heat exchange element 2 through an inlet 13, branches into the hollow chamber 2c of each heat exchange element 2, and flows out through an outlet 14. A fluid such as water flows into the container 1 from an inlet 4, passes between each heat exchange element 2, enters an adjacent room through a passage hole 15 of a partition plate 3, and exits from an outlet 5.

As shown in FIG. 1, the partition plates 3 are sandwiched between the heat exchange elements 2 and partition the inside of the container 1. The number of partition plates 3 installed depends on the flow rate of the fluid flowing into the container 1. It will be increased or decreased. FIG. 1 shows an example where the flow rate of the fluid flowing into the container 1 is reduced to 1/3. In this case, the inside of the container 1 is divided into three equal parts using two partition plates 3. This shows the case of 3 passes. In this case, the fluid flow rate is 1/
3, the cross-sectional area of the flow path inside container 1 is also 1'
By setting it to 3, you can prevent the flow rate from decreasing,
This prevents deterioration in heat transfer performance. In this way, when the flow rate of the fluid flowing through the container 1 changes from 1/2, 1/mu, 1/5...1/n, (n-
1) The inside of the container 1 may be divided into n equal parts using the partition plates 3. Furthermore, by appropriately setting the opening area and number of the lotus holes 15 provided in the partition plate 3, it is possible to approximate a flow rate change that is not divisible by an integer. According to this invention, by simply changing the number of partition plates without modifying the plates themselves, the flow velocity of the fluid between the heat exchange elements can be kept approximately constant, regardless of fluctuations in flow rate. heat transfer performance can be easily ensured.

In particular, since the partition plates are removable, it is possible to provide a highly flexible heat exchanger that can accommodate various flow rate specifications. In addition, when disassembling and assembling the partition plate for insertion and removal, the heat exchange element and partition plate are guided by support bars, so there is no need to pay special attention to aligning the through holes, making it quick and easy. Able to perform work.

Even after roughening, the heat exchange element and the partition plate maintain their predetermined positions or postures due to the support bar, so problems such as fluid leakage due to misalignment of through holes of adjacent heat exchangers do not occur.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a shell-and-plate heat exchanger showing an example of the present invention, FIG. 2 is a sectional view taken along the low zero line in FIG. 1,
FIG. 3 is an enlarged sectional view of the heat exchange element, and FIG. 4 is a front view of the partition plate. 1... Container, 2... Heat exchange element, 3... Partition plate. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. A shell-and-plate heat exchanger characterized by consisting of the following elements: (a) an inlet and an outlet for one of the two fluids to exchange heat with each other; an inlet for the other fluid; and A container having an outlet, the inlet and the outlet of the one fluid being open to the internal space of the container, the inlet being located at one end of the container, and the outlet being located at the other end of the container. (b) a plurality of heat exchange elements that are tightened together between the end plates of the container in the inner space of the container from the inlet to the outlet of the one fluid, each heat exchange element having a pair of through holes; It includes two plates welded around the periphery to form a hollow chamber communicating with the through-holes, and adjacent heat exchange elements are joined together via O-ring packing surrounding each through-hole to form a container between them. (c) The aligned through-holes that form a passage gap for the one fluid that opens into the inner space and align the pair of through-holes respectively communicate with the inlet and outlet of the other fluid; (c) A partition plate that can be freely inserted and removed between adjacent heat exchange elements, each partition plate having a pair of through holes at positions corresponding to the through holes of the heat exchange elements, and bored outside the through holes. The partition plate further includes a plurality of communication holes, and the partition plate subdivides the fluid passage from the one fluid inlet to the outlet so that the fluid flow rate in the passage gap is constant regardless of the flow rate of the fluid. interposed between every other heat exchange element; and (d)
A support bar extending inside the container to guide and support the heat exchange element and the partition plate.