JPH033815Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a plate-fin heat exchanger that can be used as a gas boiler.

[Prior Art] When applying a plate-fin heat exchanger to a gas boiler, a shell-and-fin type is considered because the difference between the gas amount, liquid amount, and evaporation amount is very large.

[Problems to be solved by the invention] However, in the shell-and-fin type heat exchanger, since the plate fins are thin, it is difficult to connect the tube plate and the plate fins.

The present invention was developed in view of the above-mentioned circumstances, with the purpose of providing a plate-fin heat exchanger that does not require tube plates.

[Means for solving the problem] The problem is the liquid side distance, which is equipped with an inlet gas passage for introducing gas, an exhaust side gas passage for discharging gas, and an evaporation chamber for heating and evaporating water. a plate, a partition plate having an inlet gas passage and an outlet gas passage communicating with the inlet gas passage and the outlet gas passage, and a water flow passage communicating with the evaporation chamber; each of the inlet gas passages and the outlet gas passage; a gas side distance plate having an inlet gas passage and an outlet gas passage communicating with the gas chamber, a gas chamber communicating the inlet gas passage and the outlet gas passage, and a water flow passage communicating with the water flow passage and the evaporation chamber; arranged alternately to form a unit, a gas inlet and a gas outlet communicating with the inlet and outlet gas passages and a gas chamber of the unit, and a water supply inlet and a steam water supply outlet communicating with the water flow passage and the evaporation chamber. It has a configuration in which a required number of the units are arranged between the side plates.

[Function] Water supplied from the water supply inlet is heated and evaporated in the evaporation chamber, and steam is taken out to the outside, while gas is introduced into the gas chamber from the gas inlet through the gas passage on the introduction side, and in the gas chamber, the gas is introduced into the gas chamber. The water in the evaporation chamber is heated and evaporated through the plate, and is discharged to the outside from the gas outlet through the gas passage on the discharge side.

[Example] Hereinafter, an example of the present invention will be described based on the accompanying drawings.

Figures 1 to 7 show an embodiment of the present invention.
is a side wall, 2 is a liquid side distance plate, 3 is a partition plate, 4 is a gas side distance plate,
One set of units 5 includes four liquid side distance plates 2, partition plates 3, gas side distance plates 4, and partition plates 3 in this order. Also, the liquid side distance plate 2 of the unit 5
The outer periphery of the contact area between the partition wall plate 3 and the partition wall plate 3, the outer periphery of the contact area between the partition wall plate 3 and the gas side distance plate 4, and the outer periphery of the contact area between the distance plate 4 and the partition wall plate 3 are fixed by brazing. Gaskets 6, 6' are inserted between the side plate 1 and the unit 5 and on the contact surfaces of the units 5, 5.

The side plate 1 is provided with a gas inlet 7, a gas outlet 8, a water supply inlet 9, a steam outlet 10, a liquid level gauge seat 11, and a support leg 12, and the liquid side distance plate 2 is provided with gas passages 13, 14, and an evaporation chamber 15. The partition plate 3 is provided with gas passages 16 and 17 and a water flow passage 18, and the gas side distance plate 4 is provided with gas passages 19 and 20, a gas chamber 21 that communicates the gas passages 19 and 20, and a water flow passage 22. are provided, and the gaskets 6, 6' are provided with notches 23, 2 to allow gas to pass through.
4 is provided, and the gasket 6 is provided with a notch 25 through which water and steam can pass. In addition, members 26, 26 are attached to the left and right inside the evaporation chamber 15 of the liquid side distance plate 2, and a corrugated guide plate 27 is arranged between the members 26, 26 to guide water and steam upward. A corrugated guide plate 28 is attached to the gas chamber 21 of the gas side distance plate 4 so as to guide the gas from above to below.
It is fixed by 9.

From left to right in Figure 1, the gas inlet 7, gas passages 13, 16, 19, 16, 13, 16, 1
9, 16, gas inlet 7 are in communication, gas outlet 8, gas passages 14, 17, 20, 17, 14, 1
7, 20, 17, and gas outlet 8 are also in communication. Also, water supply inlet 9, steam outlet 10, evaporation chamber 15, water flow passages 18, 22, 18, evaporation chamber 15, water flow passage 1
8, 22, 18, a water supply inlet 9 and a steam outlet 10 are also in communication.

In the above-mentioned plate-fin heat exchanger, the high-temperature gas entering the gas passage above each unit 5 from the gas inlet 7 is appropriately distributed and introduced into the gas chamber 21 of the gas-side distance plate 4 of each unit 5, and the gas While passing through the chamber 21 from above to below, the water in the adjacent liquid-side distance plate 2 is heated and evaporated through the partition plate 3, and is discharged from the gas outlet 8 to the outside through the gas passage under each unit 5. is discharged to.

On the other hand, water supplied into each unit 5 from the water supply inlet 9 enters the evaporation chamber 15 of each liquid side distance plate 2 directly or through the water flow passage, and in the evaporation chamber 15, the water is supplied to the gas side distance plate 4. The steam and water are heated and evaporated by the gas flowing through the gas chamber 21, and a portion of the steam and water are sent out from the evaporation chamber 15 either directly or through a water flow passage to the outside from the steam outlet 10.

In the embodiment of the present invention, the case where two sets of units are provided has been explained, but it is of course possible to implement the invention with any number of sets, and various other changes may be made without departing from the gist of the present invention. It is.

[Effects of the Invention] According to the plate-fin heat exchanger of the present invention, a tube plate is not required, so that the structure becomes simple and compact, and various other excellent effects can be achieved.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of an embodiment of the plate-fin heat exchanger of the present invention, Fig. 2 is a view taken in the direction of Fig. 1, Fig. 3 is a view taken in the direction of Fig. 1, and Fig. 4 is a view taken in the direction of Fig. 1. Figure 1 is a view in the direction of the arrows in Figure 1, Figure 5 is a view in the direction of the arrows in Figure 1, Figure 6 is a front view of the packing, Figure 7 is the
It is a directional arrow view of a figure. In the figure, 1 is the side plate, 2 is the liquid side distance plate, 3 is the partition plate, 4 is the gas side distance plate, 5 is the unit, 7 is the gas inlet, 8 is the gas outlet, 9 is the water supply inlet, and 10 is the steam outlet. , 13, 14
15 is a gas passage, 15 is an evaporation chamber, 16 and 17 are gas passages, 19 and 20 are gas passages, 21 is a gas chamber, 22
indicates a water flow path.

Claims (1)

[Scope of utility model registration request] A liquid side distance plate including an inlet side gas passage for introducing gas, an outlet side gas passage for discharging the gas, and an evaporation chamber for heating and evaporating water, the introduction side gas passage and the outlet side gas passage; A partition plate having an inlet gas passage and an outlet gas passage that communicate with each other and a water flow passage that communicates with the evaporation chamber; an inlet gas passage and an outlet gas passage that communicate with each of the inlet gas passages and the outlet gas passage; A unit is formed by alternately arranging a gas chamber that communicates the inlet gas passage and the exhaust gas passage, and a gas side distance plate that has a water flow passage that communicates with the water flow passage and the evaporation chamber. A required number of sets of units are installed between the side plates such that the gas outlet communicates with the inlet and discharge side gas passages and the gas chamber of the unit, and the water supply inlet and steam supply outlet communicate with the water flow passage and the evaporation chamber. A plate fin heat exchanger characterized by the following: