CN100520219C - Pressure-bearing flowing fluid quick heater - Google Patents

Abstract

A bearing flowing liquid quick heater consists of shell, end cover, internal bladder, PTC heater, 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 lumen created by piecing two heat conductors together of diversion heat exchange channel on the outside in internal bladder, and the internal bladder and the shell constructing farinfrared tubular electric heating element. By using liquids electric heater bought in market, PTC liquid heater 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 and volume both large, hard to install, requirement for preheating insulation, great electric energy cost, potential safety hazard of electric leakage, so its popularization and application prospect is great.

Description

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

Pressure-bearing working fluid heating problems relates to all trades and professions, huge numbers of families.The water heater that only is used for water heating, just have comprise solar energy, combustion gas, electric heating or the like, structure is multifarious, specifications and models are numerous and diverse diverse and confused.Though electric heater has many special performances, the common electrical water heater is bulky, both takes up space, and inconvenience is installed again, must shift to an earlier date dozens of minutes even preheating in 1～2 hour before the use hot water; If will make it to remain in heat supply water state at any time, then need the insulation of switching on round the clock, a power 1500W, electric heater about volume 40L, under the situation that interruption use hot water accumulative total is no more than hour in 24 hours, day power consumption expends at long-time insulating process the electric energy of a large amount of preciousnesses more than 3Kwh.Chinese patent CN2266099Y " a kind of instant electric water heater " utility model, adopting the PTC thermistor is heater, and the current in the heating heat conduction tank make the quick pyrogenicity of cold water, save preheating and insulating process, and both convenient the use can be reduced waste of energy again.But the PTC heater and the thermal conductive surface between the heat conduction tank of this device are very limited, only at many group PTC heater solid matters, promptly under the sizable situation of general power, could obtain " instant heating " effect, and the supply line of general local-style dwelling houses is difficult to bear, and makes us hanging back.

Summary of the invention

The present invention seeks to is heater with commercial PTC liquid heater directly, and it is little to make a kind of volume, in light weight, easy to install, security is good, and cost is low, and a rated power pressure-bearing working fluid quick heater suitable with the common electrical water heater.

Technical scheme of the present invention is such: a kind of pressure-bearing working fluid quick heater, be made up of the power-line plug that comprises heat guard shell, end cap, inner bag, ptc heater, 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: ptc heater is wrapped up in the inner chamber of two heat carrier amalgamations formation that are fastened on inner bag by integral body; 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 heat guard shell, end cap.Cold liquid import is located on the end cap of heat guard shell, joins through pipe joint and insulator feed tube, and an 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 ptc heater surface temperature rises to setting value in the several seconds, closely be wrapped on the PTC liquid heater 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 tens seconds, 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, just can emit the liquid of pyrogenicity continuously.

Because the PTC liquid heater heats soon, the temperature height, quantity of heat production is constant, is densely covered with the heat carrier of tortuous groove, inner bag that heat carrier Ditch cover board form by the side and wrap up being fastened on the PTC liquid heater, 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 300 ℃ of bigger, the Curie-point temperatures higher (〉 of apolegamy rated power) the PTC liquid heater, and the shell and the inner bag of the corresponding increasing of physical dimension, perhaps two above PTC liquid heaters are installed in parallel in inner bag and use, just can satisfy above-mentioned requirements.

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 can be used on fluid interchange in the partition serves as the insulation layer, not only can make full use of heat energy and reduce thermal losses, simultaneously again can simplified structure, reduce manufacturing cost.

Under the situation that flow equates, improve the power and the Curie-point 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 PTC liquid heater specification, under the constant situation of flow, heat exchange area, heat exchange have just become to influence the key of fast thermal effect perdurabgility.The present invention adopts the outside to be densely covered with the fastening PTC liquid heater 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, make the situation of liquid turbulent thin-walled heat exchange in inner bag, thereby obviously improved the fast thermal effect of liquid.

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, this device also is connected to the insulator tube connector of certain-length outside the liquid in-out joint, perfectly safe to guarantee safety problem.

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 pressure-bearing working fluid quick heater complete section

Fig. 2 is the commercial three-dimensional external form figure of PTC liquid heater

Fig. 3 is the inner-tube structure decomposing schematic representation

Fig. 4 is for to show structural representation with the pressure-bearing working fluid quick heater complete section of two PTC liquid heaters manufacturing

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-PTC liquid heater; 12-hydrothermal solution outlet pipe connection; 13-heat carrier; 14-ptc heater 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-PTC liquid charger 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

Below in conjunction with accompanying drawing embodiments of the invention are described in detail

1 one kinds of fast thermoelectric water heaters made from this programme of embodiment, as shown in Figure 1.Choosing power is 1200W, 300 ℃ of Curie-point temperatures, and heating surface temperature 〉=280 ℃, overall dimensions are 250mm (length) * 70mm (wide) * 12mm (thick), external form PTC liquid heater 11 as shown in Figure 2 is a heater; With cast aluminium and through being processed into as shown in Figure 3, the inner bag 3 of just in time whole parcel PTC liquid heater 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 6.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 ptc heater, the retaining thread pipe of PTC liquid heater 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 this joint.Load onto end cap at last and be fastenedly connected bolt 6, water inlet 4 is connected with outside water system with the insulator water pipe of a long 1.5m; Also use one section (length optional) insulator hot-water outlet pipe that put hot water tap or valve 25 of delivery port 12 and control is connected; To connect with the power connection of temperature controller 16, the earth leakage protective device 18 correct power lines that are connected and PTC liquid heater 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 change adjustable about 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 pressure-bearing working fluid quick heater of two PTC liquid heater parallel operations.Compare with embodiment 1, remove inner bag and be provided with two inner chambers of arranging the PTC liquid heater, 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.

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, a kind of pressure-bearing working fluid quick heater, formed by the attaching plug (19), temperature controller (16), the liquid in-out tube connector that comprise shell (1), end cap (2), inner bag (3), PTC liquid heater (11), cold liquid inlet connector tube (4), hydrothermal solution outlet pipe connection (12), band earth leakage protective device (18), it is characterized in that: described PTC liquid heater (11) is arranged in tight PTC liquid heater installation inner chamber (22) lining that forms of amalgamation of heat carrier (13) that is densely covered with lattice-shaped water conservancy diversion heat exchange groove (9) by two back sides by whole parcel; Described inner bag (3) is made of the tight amalgamation of back side water conservancy diversion heat exchange Ditch cover board (8) of PTC liquid heater (11), two heat carriers (13), two heat carriers (13); Wherein end of 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, pressure-bearing working fluid quick heater according to claim 1 is characterized in that: the profile of described PTC liquid heater (11) and size can be determined according to different capacity and needs; Also two above PTC liquid heaters (11) can be installed in parallel use.

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

4, pressure-bearing working fluid quick heater according to claim 1 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 pressure-bearing working fluid of arbitrary claim 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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