JPS61223497A - Heat exchanger - Google Patents

Abstract

PURPOSE:To reduce the pressure loss of fluid, flowing outside of tubes, without reducing heat transfer efficiency so much by a method wherein baffle plates are constituted of a plurality of sheets arranged orthogonally to the flow direction of the fluid flowing outside of the tubes with spaces while neighboring baffle plates are arranged so that respective baffle plates will not be superposed in the flow direction of the fluid outside of the tubes. CONSTITUTION:Fluid A, flowing outside of the tubes, flows from an inlet nozzle 2 to the outlet nozzle 7 through a water chamber 3a, respective heat transfer tube 6 and the water chamber 3b while the fluid B, flowing outside of the tubes, flows from the inlet nozzle 9 to the outlet nozzle 10 through the outside of respective heat transfer tube 6 while heat exchange is effected between mutual fluids. In this case, the fluid B flows along the heat transfer tube 6 as shown by the arrow sign B1 and passes through respective baffle plates 5a, 5b, 5c toward widthwise direction without detouring so much. According to this method, neighboring baffle plates are arranged so as not to be superposed in the direction of the fluid outside of the tubes and the amount of change of direction of the fluid outside of tubes, which flows in a heat exchanging area, can be reduced in the widthwise direction upon passing through respective baffle plate, therefore, the pressure loss of the fluid outside of the tubes may be reduced without reducing heat transfer efficiency so much.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a plurality of extra-tube fluid baffles in the heat exchange area between the tube-internal fluid flowing inside each heat-transfer tube and the extra-tube fluid flowing outside each heat-transfer tube. This invention relates to an improvement in a heat exchanger in which plates are arranged at intervals in the flow direction of extratubular fluid and heat exchanger tubes are supported on a heat exchanger body via baffle plates.

(Prior Art) The conventional heat exchanger is explained with reference to Fig. 5.6.7. (1) shows the heat exchanger body, (2) shows the inlet nozzle of the pipe fluid (7!), and (7) shows the heat exchanger body. is the outlet nozzle for the fluid in the pipe (A), (3)
is a partition plate that partitions the ice chamber (3a) on the doujin nozzle (2; side) and the ice chamber (3b) on the output nozzle (7) side, (41 is the ice chamber (3α) C3b inside the heat exchanger body (1)) and a heat exchange area (8), (9) is an inlet nozzle for extra-tubular fluid (to), [[ is an outlet nozzle for extra-tubular fluid (to), C3
d) C5b (5C') is a plurality of baffle plates, each baffle plate (5α') C5b') (5C') is connected to the heat exchange area (8) in the flow direction of the extratubular fluid (to). They are arranged at intervals of t, and their arcuate edges are fixed to the inner surface of the heat exchanger body (1). Also, 0 is the same baffle plate (5α (5b') (5
P') has a plurality of holes drilled in it, (6) is a plurality of heat exchanger tubes,
Each of the heat transfer tubes passes through each hole (6) and opens at one end into the ice chamber (3α) and at the other end into the ice chamber (3b), so that the fluid (A) inside the tube is opened. Inlet nozzle (2) →
The water chamber (3a) → inside each heat exchanger tube (6) → water chamber (3b) → flows into the outlet nozzle (7), while the extra-tube fluid (B) flows through the inlet nozzle (9) → outside the 6 heat exchanger tubes (6) → They flow to the outlet nozzle a, and heat exchange occurs between them.

(Problems to be Solved by the Invention) In the heat exchanger shown in FIGS. 5.6 and 7, the heat exchange area (8
), the nine external fluid (B) enters each baffle plate (58') (5A
')(5C')'& There is a problem that the pressure loss of the extra-tubular fluid (131 is large) is that the direction is forcibly changed significantly in the width direction each time it passes (see (B,)) t6 This invention This method addresses the above-mentioned problem by installing a plurality of extra-tube fluid baffles in the heat exchange area between the in-tube fluid flowing inside each heat transfer tube and the extra-tube fluid flowing outside each heat transfer tube. The heat exchanger tubes are arranged at intervals in the flow direction, and each of the heat exchanger tubes is supported on the heat exchanger body via the same baffle plate, and each of the baffle plates is arranged in the flow direction of the extra-tube fluid. It is composed of a plurality of plate pieces arranged at intervals in the direction perpendicular to the baffle plate, and each plate piece of the adjacent baffle plate is arranged so as not to overlap in the flow direction of the extratubular fluid. The purpose of the heat exchanger is to reduce the pressure loss χ of the fluid outside the pipe.
The object of the present invention is to provide an improved heat exchanger that can reduce the amount of heat used.

(Means for Solving the Problems) As described above, the present invention provides a plurality of extra-tube fluid baffles in the heat exchange area between the tube-internal fluid flowing inside each heat-transfer tube and the extra-tube fluid flowing outside each heat-transfer tube. The plates are disposed at intervals Z in the flow direction of the extra-tube fluid, and are supported on the heat exchanger body through each of the heat exchanger tubes and each of the baffle plates. Consisting of a plurality of plate pieces arranged at intervals χ in the direction perpendicular to the flow direction of the extra-tube fluid, and arranged so that the plate pieces of adjacent baffle plates do not overlap in the flow direction of the extra-tube fluid. As a result, the amount of direction change in the width direction when the extra-tube fluid flowing through the heat exchange area passes through each baffle plate part χ is smaller than in conventional heat exchangers (as a result, the pressure loss of the extra-tube fluid increases the heat transfer efficiency). is reduced without significantly lowering the

(Example) Next, the heat exchanger of the present invention will be explained with reference to an example shown in FIGS. , (7) is the outlet nozzle for the fluid in the pipe (A), and (3) is the ice chamber (3) on the doujin nozzle (2) side.
A partition plate (4) divides the inside of the heat exchanger body +11 into a water chamber (3h) and a heat exchange area (81). tube sheet, (9) is in the extratubular fluid) inlet nozzle, (1 (l is in the extratubular fluid (B)
The outlet nozzle of (5α) C54) (5C) is a plurality of baffle plates, and each of the baffle plates (5α) C5b) (5C) is perpendicular to the flow direction of the extratubular fluid (g) and in the next direction. It is composed of multiple plate pieces lined up at intervals, and
Adjacent baffle plate pieces are arranged so that they do not overlap in the flow direction of the extratubular fluid (1). In addition, (11) is each plate piece l
An annular member fixed to the heat exchanger body (1) (17J is a semicircular notch for attaching the heat exchanger tube (6)).

(Function) Next, the function of the heat exchanger will be explained. The fluid in the tube (A) flows from the inlet nozzle (2) → water chamber (3α) → inside the 6 heat transfer tube (6) →
The fluid outside the tube (B) flows from the inlet nozzle (9) to the outside of the heat transfer tube (6) to the outlet nozzle α1, and heat exchange occurs between them. It will be done. At this time, the extra-tube fluid (when viewed from the side, flows along the heat transfer tube (6) as shown by the arrow (B) in Figure 1, and when viewed from above, each baffle plate C51)C5b) It passes through the circumferential vv width direction of the plate piece C5c) without making a large detour.

(Effects of the Invention) As described above, the present invention provides a plurality of baffles for extra-tube fluid in the heat exchange area between the in-tube fluid flowing inside each heat transfer tube and the extra-tube fluid flowing outside each heat transfer tube. The heat exchanger tubes are arranged at intervals in the flow direction, and each of the heat exchanger tubes is supported in the heat exchanger body through the same baffle plate, and in the heat exchanger, each of the baffle plates is connected to the flow direction of the fluid outside the tube. It is composed of a plurality of plate pieces arranged at intervals in the direction perpendicular to the direction and arranged at intervals in the next direction, and each plate piece of the adjacent baffle plate is arranged so as not to overlap in the flow direction of the extratubular fluid, and the heat exchange area Since it is possible to reduce the amount of direction change in the width direction when the extratubular fluid flowing Z passes through each baffle plate portion, there is an effect that the pressure loss Y of the extratubular fluid Y heat transfer efficiency t can be reduced without significantly decreasing.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to these embodiments (and that various changes in design may be made without departing from the spirit of the present invention). It is.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional side view showing one embodiment of the heat exchanger according to the present invention, Fig. 2.3.4 is a front view showing plate pieces of each baffle plate,
FIG. 5 is a longitudinal sectional side view showing a conventional heat exchanger, and FIG. 6.7 is a front view showing each baffle plate. (1)...Heat exchanger body, (5α)C5b)<50
)...baffle plate, (6)...heat exchanger tube, (8
)...Heat exchange area, (A)...Fluid in the pipe, (
To)...extraluminal light body. Sub-Agent Patent Attorney Shige Okamoto 2 persons Figure 5 Figure 6

Claims (1)

[Claims] A plurality of baffles for extra-tubular fluid are arranged at intervals in the flow direction of the extra-tubular fluid in the heat exchange area between the internal fluid flowing inside each heat transfer tube and the extra-tubular fluid flowing outside each heat transfer tube. , in a heat exchanger in which the heat exchanger tubes are supported on the heat exchanger body through the baffle plates, each of the baffle plates is connected to a plurality of tubes arranged at intervals in a direction perpendicular to the flow direction of the fluid outside the tubes. 1. A heat exchanger characterized in that the heat exchanger is constructed of plate pieces, and is arranged so that the plate pieces of adjacent baffle plates do not overlap in the flow direction of extratubular fluid.