CN2221768Y

CN2221768Y - Internal rib pipe heat-exchanger

Info

Publication number: CN2221768Y
Application number: CN 95233006
Authority: CN
Inventors: 高常宝
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-01
Filing date: 1995-01-01
Publication date: 1996-03-06
Anticipated expiration: 2005-01-01

Abstract

The utility model uses a plurality of internal rib aluminium pipes as the pipe bundle of a pipe heat-exchanger. A spiral inner core like auger after twisting is fixed at the interaxis of the internal rib pipe bundle, which leads to that the fluid at the side of the pipe pass passes through the interaxis in the spiral flow state. Consequently, the heat transfer coefficient can be enhanced, and the heat exchange efficiency can be improved. When the heat-exchanger of the utility model is used in a vertical water heater, the lower end of the heat-exchanger is provided with a burning chamber which uses a water jacket as the wall, which avoids the transversal heat radiation of the flame.

Description

Novel inner rib tubes type heat exchanger

It is the improvement of 91211175.5 ＂ inner rib tubes type fast water heater ＂ technology and perfect that the utility model relates to the patent No..

The patent No. is 91211175.5 ＂ inner rib tubes type fast water heater ＂ technology, be as the tube bank in the tubular heat exchanger with several the inner rib aluminum type tubes through the extruding aluminium alloy moulding, promptly being shaped on some and tube wall on the internal face of tube bank is the longitudinal fin of one, thereby enlarged the effective heat exchange area of tube side side, strengthened the exothermic coefficient of tube side side liquid, to improve the heat exchange efficiency of heat exchanger.Yet its weak point is: because aluminium alloy extruded technology, inner rib plate can only distribute along the inner wall edge of tube bank, and radial height is restricted, thereby the between centers of tube bank remains empty smooth; When the clear and coherent leading thread of fluid is crossed the between centers of tube bank, can not be used for heat exchange effectively.

The purpose of the utility model design, be for remedying the deficiency of above-mentioned patented technology, and fix the inner core of a double helix like the auger shape in the between centers portion of every internal-rib tube bank, make the tube side side liquid can only be, thereby can obviously strengthen the exothermic coefficient of tube side side liquid along the inner core of this auger shape between centers of state flow path tube bank in the shape of a spiral.

Heat exchanger of the present utility model system constitutes by being shaped on inner rib plate 2 that some and tube wall are one, tube sheet 4, tube sheet 5, outer cover of heat exchanger 6 etc. on internal-rib tube bank 1 and the inner wall surface thereof, it is characterized in that: fix the inner core 3 of a double helix like the auger shape at the between centers of internal-rib tube bank 1.Constitute the flowing space Y of tube side side liquid by the internal face of internal-rib tube bank 1 and inner rib plate 2 thereof and spiral like the inner core 3 of auger shape, by the internal face of the outside wall surface of internal-rib tube bank 1, outer cover of heat exchanger 6, and the forward surface of tube sheet 4 and 5 etc. constitute shell side space K.

When heat exchanger of the present utility model was used for the heat exchanger of vertical water heater, it was the combustion chamber R of wall that its lower end is shaped on the water jacket; Combustion chamber R is connected with heat exchanger shell pass space K by its inner casing 7 and shell 8 constitutes, the two constituted toroidal cavity.On the water jacket wall of combustion chamber R, be shaped on glory hole H.

The advantage of the utility model heat exchanger: owing to fix the inner core of a double helix like the auger shape at the between centers of internal-rib tube bank 1, make the tube side side liquid can only be along this inner core state flow path tube bank between centers in the shape of a spiral, thereby can strengthen the exothermic coefficient of tube side side liquid significantly, to improve heat exchange efficiency.When the utility model heat exchanger was used for the heat exchanger of vertical water heater, it was the combustion chamber R of wall that its lower end is shaped on the water jacket, can avoid the heatsink transverse of flame.

The utility model heat exchanger manufacturing process can be as described below: the fin 2 on tube bank 1 of (1) internal-rib and the inner wall surface thereof is one-time formed aluminum alloy extrusion section bar; (2) tube sheet 4 and 5 is the aluminium sheet stamping parts, on tube sheet 4 and 5, respectively be shaped on M only (promptly several) with the circular hole in footpath, each connects every circular hole with the weldering (connection) that matches of the port of tube bank 1; (3) upper port of the outer rim of tube sheet 5 and outer cover of heat exchanger 6 links; The outer rim of tube sheet 4 connects with the upper end of combustion chamber inner casing 7, and the upper end of combustor outer casing 8 is connected with the lower end of outer cover of heat exchanger 6; Combustion chamber inside and outside shell 7 and 8 lower port link; (4) spiral can be reversed by resistant to elevated temperatures sheet metal like the inner core 3 of auger shape and form, to hang or interspersed form is fixed on the between centers of internal-rib tube bank 1.Thereby basic comprising a kind of novel inner rib tubes type heat exchanger.

Specification drawings attached 3 width of cloth of inner rib tubes type heat exchanger of the present utility model, Fig. 1 is the structural representation of inner rib tubes type heat exchanger of the present utility model that is the structural representation that the utility model heat exchanger is used as the heat exchanger of vertical water heater, this figure double as specification digest accompanying drawing, Fig. 2 is the A-A profile of Fig. 1, and Fig. 3 is the B-B profile of Fig. 1.

Among the figure: 1. internal-rib tube bank, 2. internal-rib is restrained the fin on 1 internal face, and 3. spiral is like the inner core of auger shape, 4. lower perforated plate, 5. upper perforated plate 6. outer cover of heat exchanger, 7. combustion chamber inner casing, 8. combustor outer casing, 9, enclosure, 10. shell side heat exchanging fluid import, the outlet of 11. shell side heat exchanging fluids; R. combustion chamber, H. flame combustion chamber peep hole, Y. heat exchanger tube side space, K. heat exchanger shell pass space.

Claims

1. novel tubular heat exchanger, system is made of institutes such as internal-rib tube bank 1, tube sheet 4 and 5, outer cover of heat exchanger 6, it is characterized in that: as the tube bank in the heat exchanger 1, and fix the inner core 3 of a double helix like the auger shape at the between centers of internal-rib tube bank 1 with several internally finned tubes (promptly on the internal face of type pipe, be shaped on some with tube wall be the fin 2 of one) through the extruding aluminium alloy moulding; By the internal face of internal-rib tube bank 1, inner rib plate 2, and auger shape inner core 3 constitute the tube side space Y of heat exchanger, constitute the shell side space K of heat exchanger by the internal face of the outside wall surface of tube bank 1 and outer cover of heat exchanger 6, the forward surface etc. that reaches tube sheet 4 and 5.

2. tubular heat exchanger as claimed in claim 1, when being used for vertical water heater, it is characterized in that: it is the combustion chamber R of wall that the lower end of this heat exchanger is shaped on the water jacket, and the annular space that the inner casing 7 of combustion chamber R and shell 8 are constituted is connected with heat exchanger shell pass space K

3. tubular heat exchanger as claimed in claim 1 is characterized in that: spiral is to be made through reversing by sheet metal like auger shape inner core 3.