CN100491861C - Partition structure type pressure-bearing flowing fluid quick heater - Google Patents

Abstract

A enclosing - walled structure bearing flowing liquid quick heater consists of shell, end cover, internal bladder, tubular electric, contact for liquid, power plug with leakage protector, thermostat, connecting pipe of liquid and valve of liquid, has the properties: the PTC heater totally being packed and installed in the cavity created by piecing two heat conductors together of diversion heat exchange channel on the outside in internal bladder, and the internal bladder, shell and end cover constructing surface heat exchange. By using special liquids electric heater, tubular electric with high temperature as batch production, and extending their conducting area, extracting the heat exchanging path, prolonging the heat exchanging time, creating turbulence thin wall heat exchange, the diving wall structure using thermal energy fully connecting insulating tube connection to the outer pipe for preventing the outer pipe and liquid carrying electric in the pipe, the device has solved the overall problem of traditional liquid electric heater: rated power too large, hard to install, potential safety hazard of electric leakage, so its popularization and application prospect is great.

Description

Partition structural formula pressure-bearing working fluid quick heater

Technical field the invention belongs to electric heater, particularly a kind of electrical liquid heater with pressure-bearing working fluid Fast Heating.

Background technology Chinese patent CN2612894Y " multipole Electric water heating pipe " utility model has been announced a kind of scheme that the mobile running water of electrothermal tube heating pressure-bearing is installed in water supply pipe.This device has plurality of advantages, but complex structure, rated power are big, and electric leakage hidden danger is arranged, and makes and apply all difficult, needs to improve.

It is heater that summary of the invention the present invention seeks to adopt special tubular metal heating, make that a kind of volume is little, in light weight, easy to install, security is good, cost is low, and the rated power partition structural formula pressure-bearing working fluid quick heater suitable with common water-storage electric heater only.

Technical scheme of the present invention is such: a kind of partition structural formula pressure-bearing working fluid quick heater, be made up of the power-line plug that comprises the heat guard shell of being furnished with end cap, inner bag, electrothermal tube, cold liquid inlet union, hydrothermal solution outlet connection, insulator liquid in-out tube connector, band earth leakage protective device, bleeder valve etc., it is characterized in that: electrothermal tube is fastened in the inner chamber that two heat carrier amalgamations of inner bag form by the integral body parcel; Inner bag by heat carrier, heat carrier lattice-shaped water conservancy diversion heat exchange Ditch cover board assemble constitutes the heat exchange of partition structural formula with the heat guard shell.Cold liquid import is located on the end cap of heat guard shell, joins through pipe joint and insulator feed tube, and the other end of insulator feed tube is connected with the external infusion pipeline; The hydrothermal solution outlet is located on the heat carrier lattice-shaped water conservancy diversion heat exchange Ditch cover board of fluid course least significant end in the inner bag, through passing the pipe joint of heat guard shell wall, be connected an other end building sequence switch or the tapping valve of insulator drain pipe, the hydrothermal solution flow of emitting with control with the insulator drain pipe.

After the logical liquid energising, the very fast intensification in electrothermal tube surface, closely be wrapped on the electrothermal tube by heat carrier and be fastened on the whole inner bag that the grid water conservancy diversion heat exchange Ditch cover board on the heat carrier forms and also heat up thereupon, make the rapid pyrogenicity of the liquid that contacts with the heat-transfer surface thin layer.Open tap or valve after 1-2 minute, when emitting hydrothermal solution, the cold liquid of equivalent flows in the housing additional from cold liquid import under the system pressure effect.The cold liquid that flows into flows along heat guard outer casing inner wall and thin partition around the inner bladder outer wall earlier, in process of flowing with the arrival housing other end that progressively heats up of the inner bladder outer wall heat exchange of pyrogenicity.And, flow into the higher lattice-shaped water conservancy diversion heat exchange groove of temperature by only being located at the wherein liquid-through hole of a heat carrier end face, heating up along continuous in the tortuous repeatedly circuitous flow process of groove and the heat exchange of groove hot surface arrives the other end; And then by the interior correspondence that is located at two heat carriers of this end through hole that joins, flow into the lattice-shaped water conservancy diversion heat exchange groove of another piece heat carrier, continuing tortuous repeatedly therein circuitous fluid interchange heats up, arrive the liquid outlet that is located on the inner bag fluid course least significant end Ditch cover board at last, take over through hydrothermal solution outlet connection and the insulator fluid that is right after on joint, with tap or valve control, emit the liquid of pyrogenicity continuously.

Because special electrothermal tube surface temperature is very high, quantity of heat production is constant; And parcel is fastened on and is densely covered with the heat carrier of tortuous groove, the inner bag that the heat carrier Ditch cover board is formed by the side on the electrothermal tube, and heat exchange area has been expanded manyfold; Heat exchange path from the inlet to the liquid outlet reaches several meters, and the liquid commutation of flowing through repeatedly is turbulent condition fluid interchange in thin-walled layer by layer again, and the cold liquid temp that is enough to flow through improves 30～50 ℃, reaches the purpose that makes pressure-bearing working fluid speed heat.

The heated fluid stream amount is big, temperature is high for obtaining, other liquid heating beyond perhaps being used to dewater, the present invention can adopt the physical dimension that strengthens rated power, corresponding lengthening increasing electrothermal tube and inner bag with matching thereof, shell, perhaps two above electrothermal tubes are installed in parallel in inner bag and use, just can meet the demands.

The present invention is designed to the matching relationship of shell and inner bag the style of thin partition structural formula heat exchanger, both made full use of all outer surfaces of inner bag, make it all to become heat-transfer surface, and the cold liquid that is used in fluid interchange in the partition serves as the insulation layer, not only can make full use of heat energy, reduce thermal losses, simultaneously again can simplified structure, reduce manufacturing cost.

Under the situation that flow equates, improve the power and the surface temperature of heater, strengthen the heat exchange area of heater and liquid, prolong heat exchange path and time, be the primary condition that realizes working fluid speed heat.And selected at the electrothermal tube specification, under the constant situation of flow, heat exchange area, heat exchange have just become the flow through key of liquid speed thermal effect of influence perdurabgility.The present invention adopts the outside to be densely covered with the fastening electrothermal tube of the whole parcel of heat carrier of water conservancy diversion heat exchange groove, and on the heat exchange groove, add cover plate and be combined into inner bag, inner bag and shell constitute a wall construction again, its purpose just is to expand to greatest extent the heating surface of heater, increase heat exchange area, using increases the liquid flow path with the prolongation heat-exchange time, and with the liquid flow path direction in the continuous change inner bag, build the situation of liquid turbulent thin-walled heat exchange in inner bag, thereby obviously improved the fast thermal effect of the liquid of flowing through.

The water and the various aqueous solution all conduct electricity.Anticreep, electric shock is the key problem that the liquid electric heater tool must solve.This device adopts the attaching plug power line of band earth leakage protective device, in the time of can preventing that contingency from electric leakage taking place, provides reliable and secure protection.Simultaneously, charged for preventing external pipe and the liquid to be heated that in pipeline, transmits, cause the potential danger of electric shock, according to the resistance value of liquid stream with length increase, the cross section reduces and the principle that increases, this device also is connected to the insulator tube connector that the sufficient length caliber is fit to outside the liquid in-out joint, can effectively eliminate the leakage current that fluid transfer may have in external pipe and the pipeline, guarantee that safety problem is perfectly safe.

For preventing that the liquid heating-up temperature is too high or dry combustion method takes place, this device is provided with temperature controller in the proper site of shell, and probe is located in the partition of shell and inner bag, after the fluid temperature of partition arrives setting value, can cut off the electricity supply automatically.

Description of drawings Fig. 1 shows structural representation for partition structural formula pressure-bearing working fluid quick heater complete section

Fig. 2 is the inner-tube structure decomposing schematic representation

Fig. 3 is for showing structural representation with two electrothermal tubes partition structural formula pressure-bearing working fluid quick heater complete section of making in parallel

Each label declaration is as follows among the figure: 1-plastics lagging casing; 2-shell end cap; 3-inner bag; 4-cold liquid inlet connector tube; Butt joint through hole in 5-two heat carrier amalgamations; 6-shell and end cap are fastenedly connected bolt; 7-dividing wall type fluid passage; 8-heat carrier water conservancy diversion heat exchange Ditch cover board; 9-heat carrier water conservancy diversion heat exchange groove; 10-heat carrier heat exchanging fin; 11-electrothermal tube; 12-hydrothermal solution outlet pipe connection; 13-heat carrier: 14-electrothermal tube anchor tip; The import of 15-power line; 16-temperature controller; 17-be located at the wherein inlet opening of a heat carrier end face; 18-earth leakage protective device; 19-power-line plug; 20-bile flows the liquid outlet screw on the terminal Ditch cover board in being located at; 21-inner bag assembling connecting hole; 22-electrothermal tube is installed inner chamber; The insulation tube that 23-inlet pipe joint is connected with exterior pipe system (not shown on the figure); The insulation tube that 24-liquid outlet pipe joint is connected with bleeder valve (not shown on the figure); 25-tapping valve or tap (not shown on the figure).

The specific embodiment describes in detail embodiments of the invention below in conjunction with accompanying drawing

1 one kinds of fast thermoelectric water heaters made from this programme of embodiment, as shown in Figure 1.Stainless steel tube with external diameter Φ 20m is that sleeve pipe, nichrome heating wire are that radiator body, MgO are the heat conductive insulating filler, and making power is 1200W, the electrothermal tube 11 that is of convenient length; With cast aluminium and through being processed into as shown in Figure 3, the inner bag 3 of just in time whole parcel electrothermal tube 11 when the assembling amalgamation connects guarantees the closely subsides mutually of groove of heating face and heat carrier 13.The width that is arranged in two plots of water conservancy diversion heat exchange grooves 9 on the heat carrier is 2～3mm, and the mechanical strength permission after groove depth is processed with heat carrier is exceeded; Be located at the quantity and the aperture of the corresponding liquid-through hole 5 of joint portion in two heat carriers of inner bag 3 nearly water inlet one ends, to depress the groove degree of being of another piece heat carrier of the smooth and easy inflow of water that can make in the water conservancy diversion heat exchange groove in system water, this example has been established the butt hole of 3 couples of Φ 5.Make insulated case 1 and end cap 4 with the ABS plastic injection moulding, housing 1 inner cavity size by with inner bag 3 suits after, partition 7 every sides have 2-3mm gap to determine all around.Inlet joint 4 is by on the end cap 2 that is fastened on housing shown in Figure 1.Pack in the housing 1 wrapping the inner bag integral body that installs electrothermal tube, the retaining thread pipe of electrothermal tube passes from the end face mating holes of housing 1, and with fixed by nut, it is water-tight that sealing ring is compressed; Assemble and pass the delivery port joint 12 that housing wall is connected with inner bag hot-water outlet 20, at interior partition and the equal liner high-temperature resistant seal ring of housing outer surface, water-tight to guarantee the joint.Load onto end cap at last and be fastenedly connected bolt 6, water inlet 4 is connected with outside water system with the internal diameter Φ 10mm insulator water pipe of a long 1.5m; Delivery port 12 usefulness commercially available in establish the insulation water pipe flexible metal conduit be outlet pipe 24, be connected with tap or the valve 25 that control puts hot water; To connect with the power connection of temperature controller 16, the earth leakage protective device 18 correct power lines that are connected and electrothermal tube 11, supply lines are inserted with attaching plug 19 in the joint after reliable insulative water-proof protection, and quick heater just can the operate as normal hot-water supply.Press the hot water flow size, water temperature will be adjustable with interior variation at 60 ℃.For guaranteeing that safety prevents that hot water from hurting sb.'s feelings, this device is provided with temperature controller 16 in the insulated case proper site, and the temperature susceptibility contact terminal of this temperature controller is located in the partition 7, in case when the water temperature of partition also reaches 60 ℃, temperature controller will be cut off the electricity supply.

Embodiment 2 is used to heat other pressure-bearing working fluids or requires flow big for a kind of as shown in Figure 4, goes out hydrothermal solution temperature height, adopts the partition structural formula pressure-bearing working fluid quick heater of two electrothermal tube parallel operations.Compare with embodiment 1, remove inner bag and be provided with two inner chambers of arranging electrothermal tube, therefore flow direction will suitably be changed in the inner bag, liquid outlet 20 is arranged in outside the middle of Ditch cover board top (not marking on the figure), and other structures and workflow and embodiment 1 are identical.Use as the electrothermal tube of need more than two is in parallel, also can this type of pushing become.

Partition structural formula pressure-bearing working fluid quick heater provided by the invention, rated power is moderate, does not need the preheating insulation just can plug and play, uses very conveniently, also can economize on electricity in a large number; Not only volume is little, in light weight, the good installation, and simple in structure, easy to manufacture, production cost is low, security is perfectly safe, the water heater that both can be used as average family also can be widely used in producing, and the various of life have pressure-bearing working fluid demand for heat place, in case push to market, its society and economic benefit are inestimable.

Claims (5)

1, partition structural formula pressure-bearing working fluid quick heater, by comprising that the shell (1), inner bag (3), electrothermal tube (11), cold liquid inlet connector tube (4), hydrothermal solution outlet pipe connection (12) of (2) of being furnished with end cap, attaching plug (19), temperature controller (16), the liquid in-out tube connector of band earth leakage protective device (18) are formed, it is characterized in that: described electrothermal tube (11), make with stainless steel tube and nichrome heating wire, adopt the heat-conducting insulation material of MgO for filling; The cylindrical electrothermal tube that described inner bag (3) is made of two amalgamations install inner chamber (22) lining integral body closely be enclosed with heat carrier (13) that electrothermal tube (11), the back side be densely covered with lattice-shaped water conservancy diversion heat exchange groove (9) and two heat carrier water conservancy diversion heat exchange Ditch cover boards (8) closely amalgamation constitute; Wherein end of described two heat carriers (13) is provided with inlet opening (17), and the other end is provided with corresponding through hole (5) in two heat carriers (13) amalgamation; Described inner bag (3) constitutes partition structural formula heat exchange state with shell (1), end cap (2).

2, partition structural formula pressure-bearing working fluid quick heater according to claim 1 is characterized in that: the external diameter of described electrothermal tube (11) and size can be determined according to different capacity and needs; Also two above electrothermal tubes (11) can be installed in parallel use.

3, partition structural formula pressure-bearing working fluid quick heater according to claim 1, it is characterized in that: shell (1), end cap (2) are with plastic injection-moulded the making high temperature resistant, that heat-proof quality is good, high temperature resistant leakproof seal circle liner is laid in the junction, and is fastening with bolt (6).

4, partition structural formula pressure-bearing working fluid quick heater according to claim 1, it is characterized in that: inlet is located on the end cap (2), is communicated with feed tube (23) with cold liquid inlet connector tube (4); Liquid outlet (20) be located at that Ditch cover board (8) is gone up and inner bag in liquid flow terminal corresponding position, be communicated with drain pipe (24) with a hydrothermal solution outlet pipe connection (12) that passes shell (1) shell wall; Drain pipe (24) between the feed tube (23) that cold liquid inlet connector tube (4) is connected with exterior pipe system, hydrothermal solution outlet pipe connection (12) and the bleeder valve (25) is all made with insulating materials.

5, according to the described partition structural formula of arbitrary claim pressure-bearing working fluid quick heater in the claim 1～4, it is characterized in that: what be connected with supply line is the attaching plug (19) of band earth leakage protective device (18); The proper site of housing is furnished with temperature controller (16).

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