CN201607149U - Horizontal finned shell-and-tube heat exchanger - Google Patents

Abstract

The utility model discloses a horizontal finned tube shell type heat exchanger, which comprises a tubular shell and heat exchange tubes arranged in the inner cavity of the shell and penetrating through a tube plate; the heat exchange tube is parallel to the center of the shell along the axis, and fins are further arranged on the outer wall of the heat exchange tube and are three types of metal foil round fins, metal foil oval fins or metal foil square fins; the fins can be flat fins or fins with the surfaces subjected to enhanced heat exchange treatment; the metal foil round fins or the metal foil oval fins are sleeved on the outer wall of each heat exchange tube, and the heat exchange tubes sleeved with the metal foil round fins or the metal foil oval fins are regularly arranged in the inner cavity of the shell; heat exchange tubes are arranged in the metal foil square fins side by side at intervals, and the fins are of a layered structure. The utility model discloses a shell body subassembly and fin tubular heat exchanger's combination increases unit volume heat transfer area, reduces the heat exchanger volume, has reduced the material consumption volume, has practiced thrift economic cost.

Description

A kind of horizontal finned shell-and-tube heat exchanger

Technical field

The utility model relates to a kind of shell-and-tube heat exchanger that has fin.

Background technology

Finned heat exchanger is used for gas more---liquid heat exchange or gas---phase-change heat-exchange has a wide range of applications in fields such as air-conditioning, electronic device cooling, refrigeration, Aero-Space.Along with the enhancing of social enviroment protection consciousness and the puzzlement of energy scarcity pressure, the energy utilization rate of heat exchanging device has proposed more and more higher requirement.

At present, China almost the shell-and-tube heat exchanger of the large-scale central air-conditioning condenser more than 90% be light pipe (or bellows) pipe bundle heat exchanger; This heat exchanger volume is huge, heat exchange efficiency is low, weight is big, and oneself does not satisfy the development of modern technologies far away owing to above this heat exchanger of various shortcoming.Though double pipe heat exchanger, plate type heat exchanger, node pipe heat exchanger etc. in addition commonly used at present, but, the heat exchange amount of these heat exchangers is little or working pressure is low, and range of application is little, and very difficult large tracts of land is promoted the use of and replaced present pandemic light pipe (or bellows) shell-and-tube heat exchanger.

Double pipe heat exchanger: coefficient of heat transfer height, but because structural limitations, the wearing and tearing that bump easily (pipe and pipe, pipe and outer tube) thus destroy and cause scrapping of heat exchanger, this defective even be difficult to improve stop up easily simultaneously, and cleaning is difficult; Unit heat exchange area consumption of materials is big; The heat exchange area of unit volume is little.

Plate type heat exchanger: coefficient of heat transfer height, but convection cell quality requirements height, and not easy cleaning and maintenance, it is lower to can bear pressure ratio.

Shell-and-tube heat exchanger: consumption maximum, purposes be heat exchanger the most widely, and heat transfer coefficient is lower, and unit heat exchange area consumption of materials is higher.

Chinese patent CN2338712Y discloses a kind of high-efficiency fin type shell-and-tube heat exchange of heat pipe, constitute by housing and heat exchanger tube core, its heat exchanger tube core is made up of fin-type pipe and tube sheet, dozens of fin-type pipe is fixed on the tube sheet, its fin-type pipe is made up of fin and heat exchanger tube, this fin is vertical straight fins or vertical straight ripple formula fin, but the outer wall of this heat exchanger only part stud with fin, thereby cause that heat exchange area per unit volume is little, heat exchange efficiency is low and be unfavorable for being applied to condensation place (as the condenser of central air-conditioning etc.).

Summary of the invention

At the weak point that existing heat exchanger manufacturing and mode of operation in the market exist, the utility model aims to provide and a kind ofly can increase heat exchange area per unit volume, reduces heat exchanger volume, reduces the horizontal finned shell-and-tube heat exchanger of the consumption of materials of heat exchanger.

The technical scheme that its technical problem that solves the utility model adopts is: this horizontal finned shell-and-tube heat exchanger comprises that tubular shell and housing inner chamber are established and runs through tube sheet and be the heat exchanger tube of arranging and putting; Heat exchanger tube is parallel to the center of housing along axis; The heat exchanger tube outer wall also is provided with fin, and this fin is three kinds of metal forming circle fin, metal forming elliptical fin or the square fins of metal forming; Fin can be flat fin or the fin (as ripple type, flap type etc.) that enhanced heat exchange is handled is made on the surface; Metal forming circle fin or metal forming elliptical fin are enclosed within the outer wall of every heat exchanger tube, and the heat exchanger tube that is with metal forming circle fin or metal forming elliptical fin is to arrange to be put, gapped between the adjacent fins in twos; In the square fin of metal forming at interval heat exchanger tube arranged side by side, and fin is hierarchy, leaves the gap between each layer.

The described housing outer wall of above-mentioned utility model also is equipped with air inlet pipe, needle-valve, safety valve and drain pipe; Expanded joint, solderless wrapped connection or welding between fin and the heat exchanger tube; The heat exchanger tube inwall is smooth type or female type; Fin is made with the strong metal material of heat conductivility according to different needs, and heat exchanger tube adopts the suitable metal material to make according to different needs.

It is that those skilled in the art pass through prior art and all can realize that the described surface of above-mentioned utility model does that enhanced heat exchange handles.

The present invention compared with prior art has the following advantages:

1, by the combination of housing unit and fin-tube heat exchanger, increases heat exchange area per unit volume, reduce heat exchanger volume.

2,, reduced the consumption of materials of heat exchanger by the employing of fin-tube heat exchanger.

3, by the employing of fin-tube heat exchanger, can select more cheap material for use, the consumption of reduction or cancellation heat exchanger noble metal (as copper) etc. reduces the heat exchanger cost.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is that Fig. 1 is along A-A line profile;

Fig. 3 is that Fig. 1 is along A-A line profile;

Fig. 4 is the utility model shell inner fin tubular type heat exchanger structure schematic diagram.

The specific embodiment

For the ease of it will be appreciated by those skilled in the art that the utility model is described in detail below in conjunction with accompanying drawing:

In Fig. 1,4, this horizontal finned shell-and-tube heat exchanger comprises the end socket 2 of tubular shell 1, two end cap shapes, the tube sheet 3 that cooperates with housing 1, the dividing plate 5 in the end socket 2; End socket 2, tube sheet 3 and 5 formation compartments 4 of dividing plate, wherein an end cap 2 is provided with water inlet 6 and delivery port 7; Housing 1 also is equipped with air inlet pipe 8, needle-valve 9, safety valve 10 and drain pipe 11; Be provided with at housing 1 inner chamber and run through tube sheet 3 and to be the heat exchanger tube 12 of arranging and putting, heat exchanger tube 12 is parallel to center at housing 1 along axis, and heat exchanger tube 12 is provided with backplate 13 and fin 14; Compartment 4 is formed fluid into and out of flow process with each compartment along separate routes heat exchanger tube 12 along separate routes by each, makes fluid pass in and out fluid interchange in heat exchanger tube.

In Fig. 2, heat exchanger tube 12 outer walls of the present utility model also are provided with fin 14, and fin 14 is metal forming circle fin or metal forming elliptical fin, are enclosed within the outer wall of every heat exchanger tube 12; The heat pipe 12 that is with metal forming circle fin 14 or metal forming elliptical fin 14 is to arrange to be put, 4 side by side of first rows, 5 side by side of second rows, 4 side by side of the 3rd rows, 5 side by side of the 4th rows, 4 side by side of the 5th rows establish five row's metal forming circle fin 14 or metal forming elliptical fins 14 altogether, gapped between the fin 14 in twos, also leave the gap between each layer fin 14.

In Fig. 3, fin 14 of the present utility model can also be the square fin of metal forming, in the fin 14 at interval heat exchanger tube 12 arranged side by side, and fin 14 is hierarchy, leaves the gap between each layer, 3 heat exchanger tubes 12 are arranged in the ground floor fin 14 side by side, have side by side in the second layer fin 14 to have side by side in 12, the four layers of fin 14 of 5 heat exchanger tubes in 12, the three layers of fin 14 of 4 heat exchanger tubes 4 heat exchanger tubes 12 are arranged side by side, 3 heat exchanger tubes 12 are arranged in the layer 5 fin 14 side by side, establish five row's heat exchanger tubes 12 altogether.

Expanded joint, solderless wrapped connection or welding between fin 14 described in the utility model and the heat exchanger tube 12; Heat exchanger tube 12 inwalls are smooth type or female type; Fin 14 is the strong metal of heat conductivility, and heat exchanger tube 12 is the suitable metal material.

The utility model working method is: a kind of fluid media (medium) (as water) enters from water inlet 6, and the propelling fluid medium flows in heat exchanger tube under fluid pressure, and flow process finishes the last delivery port 7 that passes through in back and flows out; One other fluid medium (as cold-producing medium R22) enters from air inlet pipe 8, flows between fin-tube heat exchanger heat exchanger tube 12 outsides and housing, is flowed out by drain pipe 11 behind condensing heat-exchange; Carry out the transmission of convection current conduction heat by heat exchanger tube 12 and fin 14 between two kinds of fluid media (medium)s.

The Nu Saier formula of perpendicular wall film condensation surface coefficient of heat transfer was when liquid film layer flowed:

$h_V=0.943{\left[\frac{\mathrm{gr}{{\mathrm{\&rho;}}_{\mathrm{<figure-callout\; id="2"\; label="l"\; filenames="H2009202624841E00011.png"\; state="\{\{state\}\}">l</figure-callout>}}}^2{{\mathrm{\&lambda;}}_{\mathrm{<figure-callout\; id="3"\; label="l"\; filenames="H2009202624841E00011.png"\; state="\{\{state\}\}">l</figure-callout>}}}^3}{{\mathrm{\&eta;}}_l{H}_l(t_s-t_w)}\right]}^{1/4}$

H wherein _VBe surface coefficient of heat transfer, unit is W/ (m ².K); H ₁Be perpendicular wall height, unit is m; h _VBig more, expression heat exchanger heat exchange effect is good more.

By above-mentioned formula as can be seen, when the wall height is erected in minimizing, surface coefficient of heat transfer is increased, heat exchange strengthens; Therefore adopt and disconnect the surface coefficient of heat transfer that layering fin-tube heat exchanger or circle fin-tube heat exchanger or elliptical fin tubular type heat exchanger can effectively increase heat exchanger.Have horizontal finned shell-and-tube heat exchanger performance of heat exchange tubes of common tube shell heat exchanger and the utility model and cost now and be analyzed, see the following form.

In addition, under the prerequisite that does not break away from the present utility model design, any conspicuous replacement is all within the utility model protection domain.

Performance has common tube shell heat exchanger and horizontal finned shell-and-tube heat exchanger performance of heat exchange tubes and cost to be analyzed

Claims (7)

1. A horizontal finned shell-and-tube heat exchanger, comprising a tubular shell (1) and the inner chamber of the shell (1) are provided with heat exchange tubes (12) that run through the tube sheet (3) and are arranged in rows. The heat pipe (12) is parallel to the center of the housing (1) along the axis, and the outer wall of the heat exchange pipe (12) is also provided with fins (14), which are characterized in that: the fins (14) are metal foil circular fins There are three kinds of fins, metal foil oval fins or metal foil square fins. 2. The horizontal finned shell-and-tube heat exchanger according to claim 1, characterized in that: said fins (14) can be flat fins or fins whose surface is treated to enhance heat transfer. 3. The horizontal finned shell-and-tube heat exchanger according to claim 1, characterized in that: the metal foil circular fins (14) or metal foil elliptical fins (14) are set on each heat exchanger On the outer wall of the tube (12), the heat exchange tubes (12) covered with metal foil circular fins (14) or metal foil elliptical fins (14) are regularly arranged in the inner cavity of the casing (1). 4. The horizontal finned shell-and-tube heat exchanger according to claim 1, characterized in that: heat exchange tubes (12) are arranged side by side in the metal foil square fins (14), and the fins (14 ) is a hierarchical structure. 5. The horizontal finned shell-and-tube heat exchanger according to any one of claims 1 to 4, characterized in that: the outer wall of the shell (1) is also equipped with an air inlet pipe (8), a needle valve (9 ), safety valve (10) and liquid outlet pipe (11). 6. The horizontal finned shell-and-tube heat exchanger according to claim 5, characterized in that: said fins (14) are expanded, wound or welded to the heat exchange tubes (12). 7. The horizontal finned shell-and-tube heat exchanger according to claim 6, characterized in that: the inner wall of the heat exchange tube (12) is smooth or the inner wall is evenly provided with internal threads.

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