CN201335535Y

CN201335535Y - Heat-exchanging device of capacity-type condensing gas furnace

Info

Publication number: CN201335535Y
Application number: CNU2008201174960U
Authority: CN
Inventors: 宋焕臣
Original assignee: 宋焕臣
Current assignee: Jiangsu Sunup Energy-Saving Technology Co., Ltd.
Priority date: 2008-06-15
Filing date: 2008-06-15
Publication date: 2009-10-28
Anticipated expiration: 2018-06-15

Abstract

The utility model discloses a heat-exchanging device of a capacity-type condensing gas furnace, which is composed of a cylinder body, a combustion chamber, a heat-exchanging flat pipe, a living water heat-exchanging corrugated coil pipe, a temperature-isolation rubber bushing and a water capacity cavity. The heat-exchanging device is characterized in that: an infrared selective absorption surface layer is arranged at the inner wall of the combustion chamber at the upper end of the cylinder body, the cylinder body forms the water capacity cavity with a lower seal head at the lower end of the cylinder body, and the heat-exchanging flat pipe is penetrated through the water capacity cavity; the upper and lower ends of the heat-exchanging flat pipe are respectively connected with the arc-shaped bottom face of the combustion chamber and the arc-shaped face of the lower seal head, so as to form a heat-exchanging smoke-gas pipe group; and the living water heat-exchanging corrugated coil pipe is arranged between the combustion chamber and the cylinder body. The technical scheme can design the manufacturing of the heat-exchanging devices of various condensing-type gas furnaces.

Description

Volume-type condensing gas furnace heat exchanger

Technical field

The utility model relates to a kind of heat exchanger technical field, especially a kind of volume-type condensing gas furnace heat exchanger that is provided with infrared ray selection absorption top layer.

Background technology

At present, existing condensing gas furnace heat exchanger generally is divided into two kinds, and the first adopts fin split type, and promptly heat exchanger and condenser be for dividing body structure up and down, its manufacturing process complexity, and the cost height conducts through fin, and thermally conductive pathways is long, and heat conduction efficiency is low; It two is volume condensation combustion gas heat-exchanger rigs, because heat exchanger tube broad all, resistance to pressure is bad, has influenced the performance of heat-exchanger rig.

In addition, because existing condensing gas furnace mostly is infrared ray sealing combustion system, no matter be finned or positive displacement, all there is not the infrared ray selectivity to absorb the top layer in its combustion chamber, this has just lost the absorption of radiant energy, has lost certain thermal efficiency.

Summary of the invention

The purpose of this utility model just provides a kind of volume-type condensing gas furnace heat exchanger, does not have the infrared ray selectivity to absorb the top layer to solve in the combustion chamber that prior art exists, and can not absorb radiant energy, has lost the problem of certain thermal efficiency.

The technical solution of the utility model is: a kind of volume-type condensing gas furnace heat exchanger, form by cylindrical shell, combustion chamber, flat heat exchange pipe, domestic water water heat exchange corrugated pipe coil, thermal insulation gum sleeve and low head and water capacity chamber, the inwall that it is characterized in that the combustion chamber is coated with infrared ray selectivity absorption top layer, flat heat exchange pipe is passed the water capacity chamber, its upper/lower terminal is connected with the lower arcuate surface of combustion chamber and the arcwall face of low head respectively, forms heat exchange flue gas nest of tubes.

Domestic water water heat exchange corrugated pipe coil is housed, at the outer wall suit one thermal insulation gum sleeve of hot water effluent's straight line section of drawing of domestic water water heat exchange corrugated pipe coil between combustion chamber and cylindrical shell.

Compared with the prior art the utility model has following distinguishing feature and good effect:

1, the utility model adopts the combustion chamber in last upside down, and be coated with the infrared ray selectivity at the combustion chamber inwall and absorb the top layer, by being coated with the combustion chamber inwall on infrared ray selectivity absorption top layer, infrared energy during burning is fully absorbed, absorb sensible heat and latent heat through narrower, super flat flat heat exchange pipe again, thereby can effectively improve heat exchange efficiency and voltage endurance capability.

2, several stainless steel flat tubes that have been welded on the lower arcuate surface of going to the bottom in the combustion chamber, cambered surface on the low head of several stainless steel flat tubes and urceolus bottom is welded and is connected, constitute top-down flue gas heat exchange nest of tubes, carry out the transition to latent heat gradually from the sensible heat absorption and absorb, the condensation assimilation effect is obvious.

3, between combustion chamber skin and cylindrical shell, be wound with a few domestic water water heat exchange stainless steel ripple coil pipes, domestic water water heat exchange corrugated pipe coil two is drawn by the heat-exchanger rig lower end, wherein domestic water water heat exchange corrugated pipe coil hot water outlet pipe draws the outer wall suit one thermal insulation gum sleeve of straightway, thereby can not influence the condensation segment operating mode, owing to adopt the heat exchange of domestic water water heat exchange corrugated pipe coil water water, increased heat exchange area in limited length, reduced cost, it is simple to coil technology.

4, domestic water water heat exchange coil adopts corrugated pipe coil, increases about one times than the common coil pipe heat exchange area of equal length, reduces cost when improving heat exchanger effectiveness.

Description of drawings

Fig. 1 is the utility model master TV structure schematic diagram.

Fig. 2 is the A-A generalized section of Fig. 1.

Fig. 3 is the utility model partial structurtes schematic diagrames.

Description of symbols among the figure:

1, cylindrical shell, 2, combustion chamber, 3, the infrared ray selectivity absorbs the top layer, 4, flat heat exchange pipe, 5, low head, 6, domestic water water heat exchange corrugated pipe coil, 7, life use the cold water water supply connector, 8, live and use hot water effluent's joint, 9, heating hot water out splice going splice, 10, heating low temperature backwater joint, 11, the thermal insulation gum sleeve, 12, the water capacity chamber.

The specific embodiment

Embodiment 1, volume-type condensing gas furnace heat exchanger, with reference to Fig. 1, Fig. 2, Fig. 3, top in cylindrical shell 1 is provided with combustion chamber 2, the inwall of combustion chamber 2 is coated with the infrared ray selectivity and absorbs top layer 3, on the lower arcuate surface of combustion chamber 2 (dashed several flat holes are arranged), the flat heat exchange pipe 4 that has been welded, flat heat exchange pipe 4 is passed water capacity chamber 12, its lower end is welded with the arcwall face of low head 5 (dashed several flat holes are arranged) and is connected, and forms the flue gas heat exchange nest of tubes; Domestic water water heat exchange corrugated pipe coil 6 also is housed between combustion chamber 2 and cylindrical shell 1, the two ends of domestic water water heat exchange corrugated pipe coil 6 cause life under the inwall of cylindrical shell 1 and also are connected with cold water water supply connector 7 with hot water effluent's joint 8 and life, draw suit one thermal insulation gum sleeve 11 on the outer wall of straightway domestic water water heat exchange corrugated pipe coil hot water outlet pipe in addition, two ends heating hot water out splice going splice 9 and heating low temperature backwater joint 10 are housed at cylindrical shell respectively about in the of 1, above structure member is that the corrosion-resistant stainless steel material is welded and screw Lian Jie Group becomes except that thermal insulation gum sleeve 11.

Embodiment 2, volume-type condensing gas furnace heat exchanger, with reference to Fig. 1, Fig. 2, Fig. 3, on the basis of embodiment 1, the degree of depth of combustion chamber 2 should be between 65～95mm, present embodiment adopts the 95mm degree of depth, between the material frequencies wavelength present embodiment that combustion chamber 2 inwall infrared ray selectivity absorb top layer 3 adopted 1.3～5 microns, flat heat exchange pipe 4 present embodiments had adopted 54 of wide 30mm * thick 6.5mm flat tube, and other and embodiment 1 are identical.

Operation principle to said structure is illustrated below:

The utility model embodiment is fit to infrared ray sealing air blast or air inducing burning upside down, be that burner is on heat-exchanger rig, flue gas is discharged below heat-exchanger rig through flat heat exchange pipe 4, at first being coated with the inwall that the infrared ray selectivity absorbs the combustion chamber 2 on top layer 3 from the hyperthermia radiation of burner and the heat energy in the flue gas absorbs in a large number, and the water of conduction feedwater cavity volume 12, heating hot water constantly is sent under the promotion of water pump, also constantly pass back into the lower curtate of heat-exchanger rig by heating low temperature backwater joint 10 through the low temperature backwater of the intact heat of heat sink radiates, this moment, heat-exchanger rig bottom temperature was lower, after-heat in the flue gas enters flat heat exchange pipe 4 and continues descending and water heat-shift, under the absorption of heating low temperature backwater, sensible heat energy in the flue gas is absorbed very soon, cooling, and then, steam in the flue gas is condensed, condensed water along flat heat exchange pipe 4 inwalls with flue gas from following outflow, latent heat is absorbed, thereby realizes the purpose of condensation energy-saving.

Claims

1, a kind of volume-type condensing gas furnace heat exchanger, form by cylindrical shell (1), combustion chamber (2), flat heat exchange pipe (4), domestic water water heat exchange corrugated pipe coil (6), thermal insulation gum sleeve (11) and low head (5) and water capacity chamber (12), the inwall that it is characterized in that combustion chamber (2) is coated with infrared ray selectivity absorption top layer (3), flat heat exchange pipe (4) is passed water capacity chamber (12), its upper/lower terminal is connected with the lower arcuate surface of combustion chamber (2) and the arcwall face of low head (5) respectively, forms heat exchange flue gas nest of tubes.

2, volume-type condensing gas furnace heat exchanger according to claim 1, between combustion chamber (2) and cylindrical shell (1), domestic water water heat exchange corrugated pipe coil (6) is housed, at the outer wall suit one thermal insulation gum sleeve (11) of hot water effluent's straight line section of drawing of domestic water water heat exchange corrugated pipe coil (6).