CN201697502U - Main body component for heat exchanger and electric heater - Google Patents

Abstract

The utility model discloses a main body component for a heat exchanger and an electric heater, which is formed by gluing or thermally melting a plastic straight pipe, a plastic three-way pipe fitting and a plastic four-way pipe fitting. A nondetachable zigzag plane array is formed. The component can be conveniently assembled into a double-pipe heat exchanger, an electric heater or a combination body of both the heat exchanger and the electric heater with some other parts. The utility model has the advantages of convenient installation and dismantlement, flexible collocation, low cost and energy saving.

Description

A kind of main component that can be used for heat exchanger and electric heater

Technical field

The utility model relates to a kind of main component that can realize the equipment of heat exchange and heating function simultaneously, furtherly, the utility model is a kind of main component that is similar to the equipment of double pipe heat exchanger, can be assembled into double pipe heat exchanger or electric heater flexibly, or the mixing apparatus of electrical heating and heat exchange.

Background technology

The utility model is relevant with double pipe heat exchanger and electric heating equipment.

Double pipe heat exchanger is a kind of common heat exchanger, its essential structure is the pipe of two different-diameters, (being commonly referred to as outer tube) that diameter is big is enclosed within little (the being commonly referred to as interior pipe) outside of diameter, the exchange of heat is carried out in two kinds of fluid (being commonly referred to as cold fluid and hot fluid) reverse flows in the crack of interior pipe the inside and inner and outer pipes respectively that temperature is different by the tube wall of interior pipe.

At present common double pipe heat exchanger is based on metal sleeve, and promptly interior pipe and outer tube are metal tube, as copper tube, stainless steel tube, titanium pipe etc.The shape of heat exchanger is according to the difference of sleeve pipe, has a variety ofly, wherein is that the spiral plate-like that mostly is of sleeve pipe is main with the copper tube, and this is because copper tube is softer, is processed into the spirality plate-like easily.With stainless steel tube, titanium pipe is the heat exchanger of sleeve pipe, generally all is to adopt straight tube to add U-bend to combine by modes such as flange or welding.Why adopting metal tube commonplace, mainly is that metal tube is convenient to welding, and inner and outer pipes is isolated easily, and bearing capacity is also bigger simultaneously.

But, adopting the all-metal sleeve pipe, the metal of consumption is many, and the quality of complete equipment is also bigger, and manufacturing, installation and cost of transportation are all than higher.Simultaneously, because metallic sheath tubular type heat exchanger adopts welding to connect more, detachability is very poor, and therefore, the pipeline the inside is not easy to clean.Impure when the fluid of heat exchange, perhaps easily produce dirt, the pipeline blocking problem takes place easily.Simultaneously, owing to all adopt metallic conduit, when outer tube was not done the insulation processing, heat externally scattered and disappeared by outer tube easily, if increase the insulation measure of outer tube, can increase some costs again, and simultaneously, maintaining is also complicated more.

Electrical heating has obtained in the heating field to use widely now.This is because electrical heating adopts is the energy of electric this cleaning, the equipment simplicity of design, and easy for installation, power is controlled well, and security also can be guaranteed.Core apparatus in the electric heating equipment modal a kind of be electrical bar.The basic structure of electrical bar is to be full of the insulating heat-conductive powder after metal tube is put heating wire in the slit, and the lead of heating wire is drawn, and carries out making after the encapsulation process.Metal tube generally adopts stainless steel or copper, and it is bar-shaped to be processed into straight tube, also can be processed into curve-like, can draw lead in two, also can single-endedly draw lead.Wire terminals can only adopt material such as heat-proof silica gel to carry out sealed insulation and handle, and also can increase nipple or flange, the convenient connection.

No matter be double pipe heat exchanger or electrical bar, its actual effect all is to make a kind of fluid reach the effect of intensification, only double pipe heat exchanger is the temperature that promotes cold fluid with a kind of hot fluid by the mode of heat exchange, electrical bar then is by converting electric energy to heat energy and the tube wall by electrical bar conducts to cold fluid, reaching the effect of intensification.And pipe generally all is cylindrical in electrical bar and the double pipe heat exchanger, therefore can it be unified to handle by certain mode.

In addition, why popular present metallic sheath tubular type heat exchanger is, mainly is because they are used for application scenarios such as high temperature, high pressure, high corrosion more.And in fact, some industrial and civilian occasions, as the waste water recuperation of heat in shower place, the recuperation of heat of industrial wastewater etc., the fluid that needs heat exchange to handle is that low pressure (being no more than 1.2MPa), low temperature (in 5～90 ℃), low burn into exist certain impurity, also lack at present this double pipe heat exchanger that adapts to fully with it, the equipment of especially this heat exchange and electrical heating combination, the utility model proposes at this type of application just.

The utility model content

At a kind of occasion, promptly need a kind of fluid (running water for example, to call cold fluid in the following text) heat, there is a kind of fluid (Fei Qi heated waste water for example for heat exchange simultaneously, to call hot fluid in the following text), the pressure of two kinds of fluids is (as being no more than 1.2MPa) all within the specific limits, and target temperature and Current Temperatures be (in 5～90 ℃) all within the specific limits, utilize hot fluid at first cold fluid to be heated by heat exchanger, as do not reach effect, heat up in conjunction with electrical heating, the purpose of this utility model provides a kind of main component of this equipment again, makes it to be configured to double pipe heat exchanger easily, perhaps electric heater, perhaps both combinations, and it is low that this main component has a cost, light, easy for installation, be easy to characteristics such as cleaning.

For achieving the above object, the technical solution of the utility model is as follows:

A kind of main component that can be used for heat exchanger and electric heater, by plastic straighttube, plastic three-way pipe fitting and plastics four-way pipe fitting through combining.Straight tube, four-way form a bow font planar array by repeatedly repeated combination, and finish with threeway or four-way at two ends, and each part connects by gluing or hot melt, forms a non-removable overall structure.Threeway has one leads directly to, and the centre is drawn a side and led to, and one of them straight-through port is a plastic port, is connected with plastic straighttube, and another straight-through port contains tapped metal insert.Four-way has two parallel leading directly to, and middle leading to by a side connects, and is the boundary with the side pipe, and two straight-through ports of a side are plastic port, be connected with plastic straighttube, and two straight-through ports of opposite side all contain tapped metal insert.There is an internal diameter bottom of threeway, four-way containing insert straight-through port than the little circular hole of inserts internal thread path, and this circular hole can be made of separately the circular hole of metal insert bottom, also can be made of jointly metal insert and plastics.Four-way can be integrated, also can be to be led to by the logical waney threeway offside of two sides in advance to be spliced, and joining method is gluing or hot melt.

Below the technical program is further specified:

This main component is formed by plastic straighttube and some plastic pipe appropriate combination, and plastic straighttube plays the effect of double pipe heat exchanger outer tube, and plastic pipe is used for plastic straighttube is spliced and as the inbound port that goes out of equipment.Two of sleeve pipe can be used as the gateway of two kinds of fluids with the plastic pipe of threeway form, and threeway has one leads directly to, and the centre is drawn a side and led to, and one of them straight-through port contains metal insert, and relative port does not contain metal insert.A kind of preferred form is that this threeway is designed to T shape, leads to vertical the connection with side in the middle of promptly leading directly to.When the effect of single sleeve pipe is not enough, need to realize 180 degree revolution splicings of a plurality of sleeve pipes, can realize by a kind of plastic pipe of four-way form, this four-way has two parallel leading directly to, and middle leading to by a side connects, and is the boundary with the side pipe, two straight-through ports of one side are plastic port, be used for connecting plastic straighttube, and two straight-through ports of opposite side contain metal insert, be used to isolate interior pipe.A kind of preferred form is that this four-way is designed to H shape, i.e. two parallel equal straight-through middle passing through logical vertical connection of a side.Straight tube and four-way form a bow font planar array by repeatedly repeated combination.Final two groups of ports of whole member can adopt threeway, also can use four-way as required, because they can realize the shunting of two kinds of fluids, but threeway is more succinct, and four-way is more flexible.Connect by modes such as gluing or hot melts between each part, form a non-removable overall structure.

Above-mentioned plastic straighttube can adopt plastic pipe commonly used, as PVC (polyvinyl chloride), PE (polyethylene) or PP-R (atactic copolymerized polypropene) water pipe etc.Metal insert in above-mentioned threeway, the four-way for feedwater pipe fitting industry inserts form commonly used, promptly adopts brass or stainless steel, tubulose, and openend has internal thread outwardly, and the opening of bottom is slightly little, less than the path of internal thread.The inserts outer wall has annular groove, and the thread form projection is arranged at the bottom, is used to make inserts and plastics to combine closely, and prevents to leak.The design of metal insert and production technology are very ripe.The mould of above-mentioned plastic T shape threeway, H shape four-way can realize all that in industry H shape four-way is complicated slightly, for reducing cost, also can be to be led to by the logical waney threeway offside of two sides in advance to be spliced, and joining method can adopt modes such as gluing or hot melt.

The following describes the utility model in the application of double pipe heat exchanger and electric heater, so that deepen to understanding of the present utility model.Read for convenience, follow-up said threeway, four-way are that the simplification of preferred plastic T shape threeway, plastic H shape four-way in the foregoing description is described.

This main component can be assembled into a double pipe heat exchanger easily in conjunction with some other parts.Pipe can adopt metal straight pipe in the heat exchanger, and as copper tube, external diameter is slightly less than the inserts bottom circular aperture size of threeway and four-way in the main component, and length is longer slightly than the distance of two inserts bottom circular aperture at sleeve portion two.For pipe in making can be isolated with outer tube, need lay rubber seal in the inserts bottom, the metal joint by band turret head in the middle of the double headed roller external screw thread of a hollow compresses rubber seal after screwing in inserts, realize the seal isolation of inner and outer pipes.For pipe in making can play the effect of turning through 180 degree, the metal joint of four-way can be realized by U-shaped metal winding pipe (commonly used is the U-shaped copper pipe) the bound rubber sealing ring of a band enlarging port.Certainly, it is curved also can to adopt band metal hose of female adapter or bellows to replace U-shaped.

Because the straight-through section outside of threeway and four-way all has internal thread interface, so can easily this main component be assembled into electric heater.If electrical bar is the straight pipe type electrical bar of simple single-ended lead-in wire, heat-proof silica gel sealing, external diameter is identical or smaller with the external diameter of pipe in the above-mentioned heat exchange, can be inserted in the sleeve pipe, replace the position of pipe in the above-mentioned heat exchanger tube, length is with length of tube unanimity in the above-mentioned heat exchange.Carry out seal isolation by above-mentioned metal joint and rubber seal, prevent to be heated fluid and overflow.Like this, this equipment has just become the equipment of the electrical heating fluid of a multisection type.Certainly, if an electrical bar end itself has male connection, then install more convenient.The hickey in the straight-through section outside by threeway and four-way, even sensor that can the mounting strap hickey are as temperature sensor, pressure sensor etc.

By said method, this main component can be assembled into double pipe heat exchanger, electric heater or both combinations.

The utility model is applied to double pipe heat exchanger and electric heater, and scheme compared to existing technology has following good result:

1, by configuration metal inner pipe or electrical bar, can realize the function of double pipe heat exchanger, also can realize the function of electric heater, also can realize uniting two into one of two kinds of equipment, the parts such as sensor of all right mounting strap hickey have very strong flexibility.

2, the heat insulation effect of plastic outer tube outclass metal outer pipe, has only stainlessly 1/200 approximately as the thermal conductivity factor of PP-R pipe, so outer tube needs to be incubated processing hardly, so this main component is used for heat exchanger and electric heater all has energy-conservation effect.

3, because the very light weight of plastic pipe and pipe fitting, the quality of entire equipment alleviates a lot, has reduced manufacturing, installation and cost of transportation.

4, owing to reduced the use of metal pipe material, and the cost of plastic pipe is much lower, so the material cost of complete equipment reduces a lot.

5, because interior pipe can take apart,, can clean so no matter be interior pipe and outer tube, can prevent effectively that the situation that stopping up appears in heat exchanger from taking place.

Below by drawings and Examples, the technical solution of the utility model is described in further detail.

Description of drawings

Fig. 1 is a schematic perspective view of the present utility model;

Fig. 2 is the utility model top plan schematic view;

Fig. 3 is threeway example one generalized section;

Fig. 4 is threeway example two generalized sections;

Fig. 5 is threeway example three generalized sections;

The four-way section enlarged diagram that Fig. 6 is formed in one;

Fig. 7 is a combined type four-way section enlarged diagram;

Fig. 8 is the section enlarged diagram of details I;

Fig. 9 is the section enlarged diagram of details II;

Figure 10 is used for the schematic perspective view of mounting bush formula heat exchanger and electric heater for the utility model;

Figure 11 is the floor map of Figure 10;

Figure 12 is the section enlarged diagram of details III;

Figure 13 is the section enlarged diagram of details IV;

Figure 14 is the section enlarged diagram of details V.

Mark among the figure is as follows:

1, threeway, 2, four-way, 3, plastic outer tube, 4, metal insert, 5, metal inner pipe, 6, rubber seal, 7, metal joint, 8, rubber seal, 9, metal nuts, 10, the metal U-bend, 11, the electrical bar main body, 12, the electrical bar lead; A, the straight-through band of threeway inserts port, b, the straight-through plastic port of threeway, c, threeway side go side mouth, d, the straight-through band of four-way inserts port, e, the straight-through plastic port of four-way; I, II, III, IV, V, details area.

The specific embodiment

Fig. 1 is a schematic perspective view of the present utility model, and Fig. 2 is the utility model top plan schematic view, and both can vivid explanation composition structure of the present utility model.Except that two ends connected with threeway 1, other parts were the bow font array that plastic outer tube 3 and four-way 2 are formed.

Fig. 3 has illustrated a kind of form of threeway 1, and the port of straight-through section is a and b, and the port of the logical section of side is c, and port a contains tapped metal insert 4, and port b then is a plastic port, and port c is a plastic port.The port c of threeway 1 according to circumstances also can contain metal insert, and as Fig. 4, shown in Figure 5, wherein the inserts of the side go side mouth of Fig. 4 is an internal thread, and Fig. 5's then is external screw thread.The common ground of Fig. 3, Fig. 4, Fig. 5 is that straight-through port one end of threeway 1 contains tapped metal insert, and the other end does not contain metal insert, and the side general rule can comprise metal insert according to actual conditions.

Fig. 6 has illustrated a kind of form of four-way 2, and it is the boundary that four ports lead to side, and two kinds of d and e are arranged, and wherein the d port contains tapped metal insert 4, and the e port then is a plastic port.Four-way is not easy to the demoulding owing to exist a side logical, so for the ease of the demoulding, the logical section of side tube wall is designed to have certain gradient.Certainly, the die cost of the scheme of Fig. 6 is than higher, in order to reduce cost, four-way can be changed by the logical waney threeway of two sides and realize, promptly the mode of side of two threeways gluing excessively all (PVC etc.) or hot melt (PP-R, PE etc.) connects, and is assembled into a four-way in advance, as shown in Figure 7.

Fig. 8, Fig. 9 are the section enlarged diagrams of details I, II, and the connected mode of plastic outer tube 3 and threeway 1, four-way 2 is described.According to the difference of plastic material, can adopt the mode of gluing (PVC etc.) or hot melt (PP-R, PE etc.), this dual mode all is through actual verification and the connected mode that extensively adopts.

Above-mentioned embodiment all is practicable, plastic outer tube 3 can adopt familiar PVC class on the market, PP-R class, PE class tubing, threeway and four-way can adopt the material identical with plastic outer tube 3, and be injection molded by metal insert is placed in the mould, is very ripe manufacturing process.

Below in conjunction with description of drawings application of the present utility model, deepen understanding to the beneficial effects of the utility model.

Figure 10, Figure 11 have showed a kind of core of the equipment that heat exchanger and electric heater are made of one, and its main component is scheme of the present utility model.This equipment can be used for the heat recovery of shower house waste water and the heating of bathing water, its principle is running water at first to be carried out heat exchange through heat exchange unit handle, heat transferred running water with shower waste, and then pass through electric heating unit and further heat, generate the suitable hot water of temperature for shower.The flow direction of filled arrows indication running water among the figure, the flow direction of hollow arrow indication shower waste, their reverse flow is to obtain best heat exchange effect.

Figure 12 is the section enlarged diagram of details III among Figure 11, illustrates that running water and shower waste are in the shunting and the isolation of outer tube and interior pipe in the heat exchange unit.Metal inner pipe 5 can adopt the high copper tube of heat-transfer capability.There is screw thread at metal joint 7 two, and there is a turret head centre, and the centre connects, and the internal diameter at two is a bit larger tham the external diameter of metal inner pipe 5 and metal U-bend 10 flared parts, and the internal diameter in stage casing is slightly little, form a little step.After metal inner pipe 5 passes through the bottom circular aperture of metal insert of threeway, rubber seal 6 is enclosed within on the metal inner pipe 5, and insert the bottom of metal insert, then metal joint 7 is screwed in metal insert, be enclosed within on the metal inner pipe 5, compress rubber seal 6, it is all closely contacted with metal insert, metal inner pipe 5, metal joint 7, blocked the approach that running water leaks, so just can realize the isolation and the shunting of running water and shower waste, can realize that metal inner pipe 5 is connected with the sealing of metal joint 7 simultaneously.

Figure 13 is the section enlarged diagram of details IV among Figure 11, and running water and the equivalent method of turning of shower waste realization 180 degree in the heat exchange unit are described.Among the figure, running water is to realize 180 degree equivalence turnings by the logical part of the side of four-way, and shower waste then needs to realize by metal U-bend 10 bound rubber sealing rings 8, turret head metal nuts 9.Metal U-bend 10 can be by the red copper straight tube through being bent into 180 degree, and the straight length at two ends forms the enlarging port through punching press and forms, and the centre-to-centre spacing at two ends equals the straight-through centre-to-centre spacing of four-way.Metal nuts 9 outsides are turret head, internal thread and metal joint 7 couplings, and a circular hole is arranged at the bottom, and internal diameter is a bit larger tham the external diameter of metal U-bend 10 flared parts.The internal diameter of rubber seal 8 peacetime states is slightly smaller than the straight tube external diameter of metal U-bend 10.During assembling, earlier metal nuts 9 is inserted in the metal U-bend 10, then rubber seal 8 is inserted in, enlarging port with metal U-bend 10 inserts in the metal joint 7 again, screw metal nuts 9 then, rubber seal 8 is all closely contacted with metal U-bend 10 and metal nuts 9, realize the sealing of the passage of shower waste.

Figure 14 is the section enlarged diagram of details V among Figure 11, and the installation method of electrically heated rod in the electric heating unit is described.This electrical bar is simple single ended type electrical bar, and electrical bar main body external diameter equals or is slightly smaller than metal inner pipe 5, and lead end adopts the heat-proof silica gel sealing, and length is consistent with the length of the metal inner pipe 5 of heat exchange unit.During installation, earlier electrical bar is inserted threeway or four-way, pass through the bottom circular aperture of the metal insert of outer tube two correspondence, electrical bar main body 11 is equivalent to frame on metal insert like this, do not contact with plastic outer tube, when preventing accident, plastic outer tube is scalded fusing.Then rubber seal is enclosed within on the electrical bar main body 11, and inserts the bottom of metal insert, metal joint 7 screws in metal insert, compresses rubber seal, realizes the sealing at the place, slit of electrical bar and threeway, four-way.For leaded end, electrical bar lead 12 should pass the endoporus of metal joint 7 earlier, and then metal joint 7 is screwed in metal insert.For safety, the heating wire in the electrical bar main body 11 should only be arranged in interlude, and certain distance should be reserved in two, makes heating concentrate on interlude, and two ends do not generate heat near the part of metal insert, when preventing accident, fusing is scalded in threeway or four-way.

The method of once cleaning below is described.When needs clean inner and outer pipes, only metal nuts 9, metal joint 7 need be unscrewed successively, take off other part, metal inner pipe 5 is extracted out, just can clean outer tube and interior pipe respectively.

Above embodiment is only in order to explanation the technical solution of the utility model but not limit it, still can make amendment to technical scheme or be equal to replacement according to basic principle of the present utility model, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solutions of the utility model.

Claims (2)

1. main component that can be used for heat exchanger and electric heater, by plastic straighttube, plastic three-way pipe fitting and plastics four-way pipe fitting through combining, it is characterized in that: straight tube, four-way are by repeatedly repeated combination, form a bow font planar array, finish with threeway or four-way at two ends, each part connects by gluing or hot melt, forms a non-removable overall structure; Threeway has one leads directly to, and the centre is drawn a side and led to, and one of them straight-through port is a plastic port, is connected with plastic straighttube, and another straight-through port contains tapped metal insert; Four-way has two parallel leading directly to, and middle leading to by a side connects, and is the boundary with the side pipe, and two straight-through ports of a side are plastic port, be connected with plastic straighttube, and two straight-through ports of opposite side all contain tapped metal insert; There is an internal diameter bottom of threeway, four-way containing insert straight-through port than the little circular hole of inserts internal thread path, and this circular hole can be made of separately the circular hole of metal insert bottom, also can be made of jointly metal insert and plastics.

2. this main component that can be used for heat exchanger and electric heater according to claim 1, it is characterized in that: the four-way of being addressed can be integrated, also can be to be led to by the logical waney threeway offside of two sides in advance to be spliced, joining method be gluing or hot melt.

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