CN1058641A - Water flowing type flameless gas water-heater - Google Patents

Abstract

A kind of by tubular flameless burner, the ring set needle recuperator, the water flowing type flameless gas water-heater that flowing water and gas control system are formed, the porous ceramics core body that it is characterized in that tubular nonflame burner is a tubular-shaped structures, the tube wall outer surface has the woven wire shroud ring around being the burning radiation face, the ring set needle recuperator that this face is formed by inner metal sleeve and the plastic wrapper that also is outer cover of water heater simultaneously holds, and its advantage is a thermal efficiency height, thermic load is big, simple in structure, volume is little, in light weight, noise is little, windproof performance is good, carbon monoxide generates atomic, easy scale removal, be easy to the aesthstic decoration in moulding and surface, draw materials conveniently, cost is low, obvious energy conservation.

Description

Water flowing type flameless gas water-heater

The invention belongs to and utilize directly flameless combustion on porous gas far-infrared radiation ceramic material and wire guard of gaseous fuel (natural gas, town gas, liquefied gas, biogas), generation is main heat energy form with far infrared radiation, and the water of Continuous Flow being crossed heat exchanger constantly is heated to temperature required water heater.

The common feature of the water-flowing gas water heater that has both at home and abroad at present is: adopt many burners flaming combustion device and plate pipe-fin connection stationary heat exchanger, utilize direct vertically upward heating heat exchanger fin of combustion flame and plate pipe.The shortcoming of this structure is: 1, the combustion flame directly synthermal low fin contact with the plate pipe, cause the part combustion gas can not burn or burn incomplete, cause the generation of heat-energy losses and carbon monoxide to increase; 2, generally between 300～900 ℃, convection current at this moment and radiant heat transfer work combustion flame temperature simultaneously, and the heat of semiconvection form runs off from the exhaust duct between fin, and the heat of partial radiation form is to scattering and disappearing all around; 3, owing to reasons such as structure and material cause heat exchanger, burner, housing etc. self dissipated heat more; 4, the heat exchanger plate pipe inequality of being heated, inwall easily scales, and scale removal is difficulty very, causes heat exchange to weaken, and the thermal efficiency descends, and shorten service life; 5, complex structure, parts are many, and cost is higher; 6, noise is bigger, and wind resistance is poor, and carbon monoxide generates more.

Adopt in the burner of combustion gas far infrared heating technology at present both at home and abroad, the plate shaped flameless burner that adds the wire guard with porous ceramic plate is maximum, has thermal efficiency height, simple in structure, to draw materials conveniently, cost is low, applied widely, noise is little, and wind resistance is good, and carbon monoxide generates advantages such as atomic.In the progress of low-temperature catalytic burning technical elements and the exploitation of high radiance ceramic material, such combustibility will be better along with both at home and abroad.Because such burner all adopts the porous ceramics core body of disk construction, it adopts half sintering to burn till again on making, a large amount of honeycomb sample break-through apertures are arranged on the plate in addition, so bad mechanical strength, need strict control individual plates size, therefore such burner still has the porous ceramic plate cracky, monomer burner combustion radiating surface area is limited, volume is big, and the radiation heating direction is single, the radiation heating narrow range, partial radiation heat energy scatters and disappears from housing and waits deficiency, though plate shaped flameless burner is used for water-flowing gas water heater abroad,, has limited the performance of its function owing to reason such as above-mentioned deficiency and heat exchanger structure be incompatible.

The objective of the invention is to utilize and give full play to the advantage that the porous gas far infrared is penetrated ceramic flameless combustion technology, overcome its shortcoming, thereby eliminate or improve the deficiency of existing water-flowing gas water heater by innovation burner and heat exchanger overall structure and function.

Water flowing type flameless gas water-heater of the present invention is made up of tubular flameless burner, ring set needle recuperator, current and gas control system three parts, is described as follows:

(1) tubular flameless burner: by wire guard [1], porous ceramic pipe [2], gas mixing pipe [3], anti-stream cover [4], fixed cover [5], adiabatic sealing gasket [6] [7], fixed screw [8] [9], nozzle [10], air door [11] is formed, see accompanying drawing 1,2, its burning radiation function is achieved in that combustion gas is when nozzle [10] sprays into gas mixing pipe [3], because suction function aspirates into the passage of air from air door [11] simultaneously, enter in porous ceramic pipe [2] tube chamber after in tube chamber, fully mixing, flow out and flameless combustion on the tube wall outer surface through last aperture [2-1] from tube wall around anti-stream covers counter the flowing to of [4] even adjustment, directly heat tube wall, give off far infrared when arriving uniform temperature, second-time burning is carried out in imperfect combustion combustion gas between wire guard [1] and porous ceramic pipe [2] tube wall makes burning fully, improve the tube wall surface temperature simultaneously and made the surface temperature uniformity, and increased radiation surface area.Because porous ceramic pipe [2] is a tubular-shaped structures, and porous ceramics mechanical strength, thermal shock resistance are all obviously improved than slab construction, has enlarged the burning radiation area in reduced volume, has increased radiation scope, reduced scattering and disappearing of radiant heat energy.

(2) ring set needle recuperator: by interior cover [12], overcoat [13], water inlet pipe [14], outlet pipe [15], temperature resistant encapsulation ring [16] [17], seal cover [18] [19], collet [20] is formed, see accompanying drawing 1,2, its heat exchange function is achieved in that in order to adapt to tubular flameless burner 26S Proteasome Structure and Function, interior cover [12] is ring set shape and is enclosed within the burning radiation face outside of being made up of porous ceramic pipe [2] lateral surface and wire guard [1], this utmost point can fully absorb and exchange radiant heat energy like the structure of absolute black body, also can absorb streamed heat energy simultaneously, and adopted stringer fin increases such as [12-2] heat exchange area to help to strengthen the structure of heat convection and radiation heat transfer effect with increasing thermal resistance on interior cover [12] medial surface, give the water that flows into the annular space that surrounds by interior cover [12] lateral surface and overcoat [13] medial surface from water inlet pipe [14] by the very fast conduction of heat energy that interior cover [12] absorbs, constantly be heated to water temperature required and flow out from outlet pipe [15].Overcoat [13] also is an outer cover of water heater simultaneously, can be made of plastic, have easy manufacturing, in light weight, cost is low, be easy to advantages such as decoration, heat preservation energy-saving, owing to form airtight, resistance to compression by seal cover [18] [19], temperature resistant encapsulation ring [16] [17] between interior cover [12] and the overcoat [13], heat-resisting and be easy to open and close type of attachment is removed the interior incrustation scale that overlaps on [12] lateral surface so can take off overcoat [13] very easily.

(3) current and gas control system: can select the corresponding construction and the device that adopt at present for use both at home and abroad, see shown in Figure 5.

Describe content of the present invention and optimum implementation in detail below in conjunction with embodiment and accompanying drawing:

Fig. 1 is the embodiment profilograph;

Fig. 2 is Figure 1A-A face drawing in side sectional elevation;

Fig. 3 is that porous ceramic pipe [2] tube wall cross section exemplifies figure;

Fig. 4, exemplify figure for interior cover [12] cross section;

Fig. 5 is current and gas burning system regulation and control schematic diagram;

Present embodiment uses natural gas, and air pressure is 200～250mm water column, thermic load 〉=9000 kilocalorie/hour, air consumption≤0.8～1m ³/ hour, go out hot water amount (△ t 〉=25 ℃) 〉=5 liter/minute, form by tubular flameless burner, ring set needle recuperator, current and gas control system three parts:

(1) tubular flameless burner is made up of wire guard [1], porous ceramic pipe [2], gas mixing pipe [3], anti-stream cover [4], fixed cover [5], adiabatic sealing gasket [6] [7], fixed screw [8] [9], nozzle [10], air door [11], it is characterized in that:

A, porous ceramic pipe [2] is a tubular-shaped structures, make by combustion gas far-infrared radiation ceramic material, its tube chamber is built-in with the part of gas mixing pipe [3] straight tube [3-1], wire guard [1] is arranged around being the burning radiation face on its tube wall lateral surface, this manages best integral one-step molding, also but split is adhesion-molded, its tube wall cross section can be the garden annular, and (Fig. 3 a), etc. polygon annular (Fig. 3 b, this figure has only shown annular such as hexagon such as grade, actual comprise etc. three limits or above all can), ellipse garden annular (Fig. 3 c) etc., a large amount of honeycomb sample break-through apertures are arranged on the tube wall, and present embodiment adopts the tubular porous ceramic pipe in garden [2], pipe range 140mm, external diameter of pipe 100mm, wall thickness 10mm, small aperture 0.8mm, pitch of holes 0.8mm;

B, wire guard [1] can be helically coiled or plane network structure, make by siderochrome aluminium or other alloy silk, earlier the alloy filament winding is made helix, again it closely is looped around on porous ceramic pipe [2] lateral surface by helical arrangement, it is 0.8mm that present embodiment adopts the alloy filament diameter, spiral pitch diameter 6mm, screw pitch 3mm if can adopt the material with catalytic combustion effect to make better;

C, gas mixing pipe [3] are made up of straight tube [3-1], jacket [3-2], straight tube [3-1] be positioned at porous ceramic pipe [2] tube chamber inside exceptionally bread be wound with the jacket of making by insulating refractory [3-2], to reduce heat-energy losses, connection between the same fixed cover of straight tube [3-1] [5] is airtight and mobilizable, be positioned at the intraluminal length of porous ceramic pipe [2] so that adjust straight tube [3-1], present embodiment straight tube [3-1] length is 120～140mm, bore 35～40mm;

D, anti-stream cover [4], by the metal material punch forming, the inside shunting garden awl [4-1] of one awl point is arranged in its top, play anti-stream, shunting, evenly distribution effect, the aperture that passes through for fixed screw [8] [9] is arranged on it, inwall can polish or/and coating film treatment to strengthen the antiradiation effect, reduces thermal loss;

E, fixed cover [5] by the metal material punch forming, have the macropore that passes through for straight tube [3-1] for the aperture that passes through of fixed screw [8] [9] and central part on it, play fixing and sealing function;

F, adiabatic sealing gasket [6] [7] are made by insulating refractory, are positioned between porous ceramic pipe [2] two ends and anti-stream cover [4] and the fixed cover [5], play adiabatic sealing function, and its thickness is 10mm in the present embodiment, mineral wool.

G, fixed screw [8] [9] are solid rod-like or hollow tubular.Made by metal material, play fixing and the effect of being tightly connected, present embodiment adopts diameter to make for the 3mm steel material.

H, air door [11] and nozzle [10] are chosen by concrete needs, present embodiment as shown in Figure 1, nozzle [10] aperture 1.5mm～2mm.

(2) the ring set needle recuperator is by interior cover [12], overcoat [13], water inlet pipe [14], outlet pipe [15].Temperature resistant encapsulation ring [16] [17], seal cover [18] [19], collet [20] are formed, and it is characterized in that:

A, interior cover [12] is the burning radiation face outside that ring set shape is enclosed within porous ceramic pipe [2] lateral surface and wire guard [1] composition, make by fine copper or fine aluminium or stainless steel, there is an observation window [12-1] to make on it by transparent refractory, the fin [12-2] that has a large amount of stringers to arrange on its medial surface, be straight sheet or arc sheet and vertical with medial surface or be inclined to certain angle, interior cover [12] wall also can be the waveform of vertical arrangement, trough or/stringer fin [12-2] can be arranged on the crest, can be connected with water inlet pipe [14] on it or/and outlet pipe [15], its cross section structure is seen Fig. 4 a, Fig. 4 b, Fig. 4 c, shown in Fig. 4 d, play heat absorption heat exchange effect, present embodiment adopts straight sheet fin, the thick 1mm of fin [12-2], wide 1.5mm, long 22～24mm, spacing of fins 3～4mm, fine copper die casting or welding are made.

B, overcoat [13] are loop overlapping shape and are enclosed within interior cover [12] outside, make by materials such as plastics or metals, can be equipped with water inlet pipe [14] and outlet pipe [15] on it, as be that non-transparent material is made and should be had observation window [13-1] corresponding with observation window [12-1], there are structures such as the groove that Gong is tightly connected or screw thread at two ends, present embodiment is made of plastics, water inlet pipe [14] and outlet pipe [15] integral molded plastic moulding on the coat, as shown in Figure 1;

C, temperature resistant encapsulation ring [16] [17] are made by heat-resisting synthetic rubber or natural rubber, form airtight, heat-resisting, resistance to compression and being connected of being easy to open and close at interior cover [12] with overcoat [13] two ends with the seal cover of making by plastics or metal material [18] [19], present embodiment temperature resistant encapsulation ring [16] [17] is made by synthetic heat resistant rubber, seal cover [18] [19] is made by heat-resisting thermosetting plastics, the annular water storage heating chamber that adopts form sealings such as bonding and the firm pressurization of screw thread to surround by interior cover [12] outer surface and overcoat [13] inner surface, as shown in Figure 1;

D, collet [20] are the ring set morpheme in fin [12-2] inner edge inboard, interior cover [12] upper end, work to prevent that radiant heat energy is scattered and disappeared and the increase heat convection, as shown in Figure 1;

(3) current and gas control system, as shown in Figure 5, present embodiment little fire kept burning day and night places tubular flameless burner wire guard [1] lower end, sees shown in Figure 1, regulation device splits with tubular flameless burner and circular heat exchanger, and suspended and fixed device is provided with as required.

Below be global feature of the present invention:

Do not contact mutually between a, fin [12-2] and the wire guard [1], fin [12-2] gross area is 10～15 times of interior cover [12] medial surface area;

B, interior set upper side exceed adiabatic sealing gasket [6] upper limb 60～100mm, and the lower end exceeds adiabatic sealing gasket [7] lower edge 30～50mm;

Coefficient of excess air is 1～1.5 during the burning of c, tubular flameless burner, carbon monoxide discharge rate≤10ppm, noise≤40 decibel;

D, ring set needle recuperator two air inlet/outlets up and down reduce radiant heat energy as far as possible and scatter and disappear, and utilize chimney effect when keeping air-flow unimpeded, use for second-time burning from the lower end suck air;

Present embodiment is carbon monoxide discharge rate≤10PPm when abundant burning, noise≤40 decibel, the thermal efficiency 〉=90%.

The present invention compares the remarkable advantage that has with existing water-flowing gas water heater:

1, thermal efficiency height 〉=90%, obvious energy conservation;

2, thermic load is big, but dealing with various requirements;

3, simple in structure, parts are few, draw materials conveniently, are easy to suitability for industrialized production, and cost is low;

4, volume is little, and is in light weight, is easy to transportation and stores the saving intermediate expenditure;

5, noise is little, and wind resistance is good, and the carbon monoxide discharge rate is few, safety and sanitation;

6, easy scale removal, easy-maintaining, long service life;

7, profile is various, is easy to moulding and aesthstic the decoration;

8, applied range can be formed series of products by various different needs;

9, tubular flameless burner also can be used for industry heating and domestic stove.

Claims (6)

1, a kind of by tubular flameless burner, the ring set needle recuperator, the water flowing type flameless gas water-heater that current and gas control system are formed, the porous ceramics burning core body that it is characterized in that tubular flameless burner is a tubular-shaped structures, the woven wire shroud ring is arranged around being the burning radiation face on the tube wall lateral surface, the ring set needle recuperator that this face is made up of inner metal sleeve and the plastic wrapper that also is outer cover of water heater simultaneously holds.

2, press the water flowing type flameless gas water-heater of claim 1 defined, wherein tubular flameless burner is made up of wire guard [1], porous ceramic pipe [2], gas mixing pipe [3], anti-stream cover [4], fixed cover [5], adiabatic sealing gasket [6] [7], fixed screw [8] [9], nozzle [10], air door [11], it is characterized in that:

A porous ceramic pipe [2] is a tubular-shaped structures, make by combustion gas far-infrared radiation ceramic material, its tube chamber is built-in with gas mixing pipe [3], wire guard [1] is arranged around being the burning radiation face on the tube wall lateral surface, the tube wall cross section is annular or equilateral annular, and a large amount of honeycomb sample break-through apertures [2-1] are arranged on the wall;

B wire guard [1] is helically coiled guard or plane net form guard, is made by metal alloy wires;

C gas mixing pipe [3] is made up of straight tube [3-1], jacket [3-2], and straight tube [3-1] part is positioned at porous ceramic pipe [2] tube chamber, has jacket [3-2] to hold outside it;

D is counter, and the inside skimmer cone [4-1] of an awl point is arranged at cover [4] top of flowing;

E porous ceramic pipe [2] two ends are connected by forming airtight thermal insulation between adiabatic sealing gasket [6] [7] and fixed screw [8] [9] and anti-stream cover [4], the fixed cover [5].

3, press the water flowing type flameless gas water-heater of claim 1 defined, its middle ring sleeve needle recuperator is made up of interior cover [12], overcoat [13], water inlet pipe [14], outlet pipe [15], temperature resistant encapsulation ring [16] [17], seal cover [18] [19], collet [20], it is characterized in that:

The interior cover of a [12] is ring set shape and is enclosed within wire guard [1] outside, make by fine copper or fine aluminium, observation window [12-1] is arranged on it and can connect water inlet pipe [14] or/and outlet pipe [15], the fin [12-2] that has a large amount of stringers to arrange on its medial surface, be straight sheet or arc sheet and vertical with medial surface or be inclined to certain angle,, interior cover [12] wall also can be the waveform of vertical arrangement, and trough is or/and can there be stringer fin [12-2] on the crest;

B overcoat [13] is ring set shape and is enclosed within interior cover [12] outside, is made by materials such as plastics or metals, can be equipped with water inlet pipe [14] on it or/and outlet pipe [15], as is that non-transparent material is made and should be had observation window [13-1] corresponding with observation window [12-1];

The annular space that surrounds between cover [12] and the overcoat [13] in the c is the water storage heating chamber, and these two ends, chamber form airtight, heat-resisting, resistance to compression and being connected of being easy to open and close repeatedly by interior cover [12], overcoat [13] by seal cover [18] [19], temperature resistant encapsulation ring [16] [17].

4, press the water flowing type flameless gas water-heater of claim 1,2,3 defineds, it is characterized in that not contacting mutually between fin [12-2] and the wire guard [1], fin [12-2] gross area is 3～5 times of interior cover [12] medial surface area, is 10～15 times of porous ceramic pipe [2] lateral surface area.

5, by the water flowing type flameless gas water-heater of claim 1,2,3 defineds, it is characterized in that interior cover [12] upper end exceeds adiabatic sealing gasket [5] upper limb 60～100mm, the lower end exceeds adiabatic sealing gasket [6] lower edge 30～50mm;

6, press the water flowing type flameless gas water-heater of claim 1,2,3 defineds, it is characterized in that the ring set needle recuperator up and down two air inlet/outlets the guarantor wait upon air-flow unimpeded in, reduce radiant heat energy as far as possible and scatter and disappear, and utilize chimney effect, use for second-time burning from the lower end suck air.

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