The thermoelectric cooling module
Technical field
The utility model relates to a kind of electrothermal refrigeration module, be applicable to refrigeration plant.Belong to refrigeration technology field.
Background technology
The thermoelectric cooling technology is called conductor refrigeration or thermoelectric (al) cooling technology again.It is to utilize the thermoelectric effect of particular semiconductor material to realize refrigeration.Its core is thermoelectric chip (TEC), and TEC size commonly used is 40 * 40 * 5 (wide * long * thick) mm.Thermoelectric module is connected with the mains, and its one side can be absorbed heat, and another side can heat release.Load onto fin at corresponding face, just constituted the thermoelectric cooling module.
When using the thermoelectric cooling chip,, and can not fully efficiently, rationally use TEC often because assembling, structure are improper.The assembling of TEC needs very strong professional knowledge, and is because of its cold and hot surface all is a potsherd, to the smooth smoothness of pressure, contact-making surface, the coupling of cold and hot surface cold scattering coefficient, adiabatic effect etc., all very strict during assembling.Wherein a technology is unreasonable, all can cause the reduction of integrally cooling efficient.Existing refrigeration module is many by thermoelectric cooling sheet, heat radiation aluminium, and aluminium brick and cold scattering aluminum are formed.Heat radiation aluminium is installed on the hot side of TEC, and the huyashi-chuuka (cold chinese-style noodles) of TEC is then installed cold scattering aluminum brick and cold scattering aluminum according to this.The quality of refrigeration structure refrigeration performance except that the radiating effect of thermoelectric performance that is subjected to TEC itself and hot side influences, is influenced by the insulation effect between the TEC cold and hot surface also.Because the spacing between the TEC cold and hot surface has only 4~5MM, and the difference of temperature can reach 40~50 ℃, and is undesirable as insulation effect between the two, then can cause the string temperature between cold and hot surface, the instant heating short circuit.Therefore, refrigeration structure need be provided with the refrigeration heat insulating construction to improve refrigeration performance.And existing thermoelectric cooling heat insulating construction mostly as shown in Figure 1, and adiabatic foaming layer structure is made of hot side plastic housing a21, huyashi-chuuka (cold chinese-style noodles) plastic housing a22 and frothing heat-insulating layer a23, and refrigeration structure just is installed in the structural installing hole of this thermal insulation foaming layer.But, there is following weak point in this kind structure: at first, plastic housing itself forms heat transmission, and huyashi-chuuka (cold chinese-style noodles) plastic housing a22 links to each other with hot side plastic housing a21, contact area between the two reaches 100 square centimeters, and distance also has only about four to five centimetres, and the thermal conductivity factor that plastics are arranged is 0.2, therefore can influence insulation effect, and, because refrigeration structure can be gapped in installing hole, and be full of air in the gap, air also can cause heat transmission; Secondly, because heat radiation aluminium a11 and cold scattering aluminum a12 directly are fixed on the screw thread of cold scattering aluminum brick a14 by fixed screw a13, and only intercept between fixed screw a13 and heat radiation aluminium a11, the cold scattering aluminum a12 by pad a16, therefore, fixed screw a13 can become heat-conduction medium, causes the energy offset between the TECa1 cold and hot surface; Once more, because only posting sponge a15 on the composition surface of cold scattering aluminum a12 and huyashi-chuuka (cold chinese-style noodles) plastic housing a22 seals, when huyashi-chuuka (cold chinese-style noodles) is worked, having condensed water penetrates into sponge a15 and flows in the slit of cold scattering aluminum brick a12, caused cold and hot end to conduct heat by water, cancelling out each other of cold and hot energy, integrally cooling performance decrease have also been caused indirectly.Have the deficiency of the heat insulating construction of refrigeration module now, influenced the refrigeration of refrigeration module greatly.
The utility model content
The utility model technical issues that need to address, promptly the purpose of this utility model is for a kind of thermoelectric cooling module is provided, the structure of this thermoelectric cooling module can improve the refrigeration of refrigeration module.
Technical problem of the present utility model can solve by taking following measure: the thermoelectric cooling module, comprise TEC cooling piece, radiator, cooler, the end face of TEC cooling piece is attached to the bottom surface of cooler brick body, the bottom surface of TEC cooling piece closely contacts with radiator, its design feature is: an adiabatic frame piece is between radiator and cooler, and the brick body of cooler is positioned at adiabatic frame piece together with cooling piece; Radiator, cooler are connected with adiabatic frame piece with connector respectively; An end of establishing cold aluminium fin of described cooler places in the inside casing of a location framework, uses between the inside casing of described positioning framework and cooler, the adiabatic frame piece by the sealing device sealing, is provided with the screw column structure around the positioning framework.
The utility model technical solution problem, can also take following measure:
Be injected with threaded structural plastic guide pillar in the described adiabatic frame piece, radiator is that screw connects with the connected mode that cooler is connected with adiabatic frame piece respectively, radiator is connected with described helicitic texture with screw respectively with cooler, is provided with the plastic mattress cap between screw and radiator and cooler.
Described sealing device is made up of soft silicone rubber O-ring and plastic frame, and the top of plastic frame is provided with groove, and soft silicone rubber O-ring is embedded in the groove.
Described radiator is made up of pedestal and some fin, and pedestal is provided with the groove of some mutual balances; The root of described fin inserts respectively in separately the groove, and its root and pedestal are fixed together.
Described radiator comprises that also a cross section is the wind deflector of U type, and preceding described fin top places in the U type wind deflector, forms some heat dissipation wind channels between U type wind deflector, pedestal, fin three.
The utlity model has following outstanding effect:
1, because the brick body of the utility model cooler is positioned at adiabatic frame piece together with the TEC cooling piece, adiabatic frame piece can only carry out the hot and cold heat transmission in the face of the external world of TEC cooling piece by the brick body and the radiator of cooler.Adiabatic frame has certain height, the heat of hot and cold of TEC cooling piece is delivered in the quite long distance hot short circuit can take place, thereby improve TEC cooling piece refrigeration.
2, owing to radiator of the present utility model, cooler are connected with adiabatic frame piece with connector respectively, and adiabatic frame piece has heat insulating function, can avoid the connector that is connected with cooler of the prior art, with connector that radiator is connected between direct or indirect heat transmission, also improve the efficient of TEC cooling piece refrigerating function, helped improving the refrigeration of refrigeration module.
3, owing to use by sealing device between the inside casing of positioning framework of the present utility model and cooler, the adiabatic frame piece and seal, sealing device can play the effect that prevents the condensed water infiltration, prevented to transmit heat by water between cooler and the radiator, also helped improving the refrigeration of refrigeration module.
4, because the pedestal of radiator of the present utility model is provided with the groove of some mutual balances; The root of described fin inserts respectively in separately the groove, and its root and pedestal are fixed together.This of fin kind of fixed form makes fin can make very thinly, makes more fin one increase area of dissipation can be set on the pedestal, thereby can improve the radiating efficiency of radiator.
5, the coupling of the utility model and various products is flexible, installs simple.When the utility model is installed, only need on the application product to reserve corresponding filling installing port, positioning framework is fixed on the application product, promptly can finish installation process.And the requirement of size is very loose when installing, and is fit to streamline production model in enormous quantities.
Description of drawings
Fig. 1 is the structural representation of prior art refrigeration module.
Fig. 2 is the utility model specific embodiment structural section figure.
Fig. 3 is the structure enlarged drawing at the utility model specific embodiment sealing device place.
Fig. 4 is that the utility model specific embodiment part is installed exploded view.
The specific embodiment
Below in conjunction with specific embodiment the utility model is specifically described.
Specific embodiment:
Fig. 2, Fig. 3 and Fig. 4 constitute a specific embodiment of the present utility model.As can be seen from Figure 2, present embodiment is made up of TEC cooling piece 8, radiator 16, cold scattering 18, and the end face of TEC cooling piece 8 is attached to the bottom surface of cooler brick body 4, and the bottom surface of cooling piece 8 closely contacts with cooler 18.Described radiator 17 is that the wind deflector 13 of U type is formed by pedestal 10 and some fin 15, cross section, and pedestal 10 is provided with the groove 19 of some mutual balances; The root of described fin 15 inserts respectively in separately the groove, and its root and pedestal 10 are fixed together.Fin 15 tops place in the U type wind deflector 13, and U type wind deflector 13, pedestal 10, fin 15 threes form some heat dissipation wind channels.When radiator fan was installed, fan can be installed in an end of heat dissipation wind channel.
From Fig. 2, figure, 4 as can be known, an adiabatic frame piece 7 is between radiator 16 and cooler 18, and the brick body 4 of cooler 18 is positioned at adiabatic frame piece 7 together with TEC cooling piece 8.Radiator 16, cooler 18 are connected with adiabatic frame piece 7 with connector respectively.Be injected with the plastics guide pillar 9 of threaded structure 14 in the preceding described adiabatic frame piece 7, radiator 16 is that screw connects with the connected mode that cooler 18 is connected with adiabatic frame piece 7 respectively, radiator 16 is connected with described helicitic texture 14 with screw respectively with cooler 18,18 of screw 2 and radiator 16 and coolers are provided with plastic mattress cap 3, and 18 of screw 12 and coolers are provided with plastic mattress cap 11.An end of establishing cold aluminium fin of described cooler 18 places in the inside casing of a location framework 1, uses by sealing device between the inside casing of described positioning framework 1 and cooler, the adiabatic frame piece to seal.Sealing device is made up of soft silicone rubber O-ring 6 and plastic frame 7, and the top of plastic frame 7 is provided with groove, and soft silicone rubber O-ring 6 is embedded in the groove.The inside casing of positioning framework 1 is being pressed soft silicone rubber O-ring 6.Be provided with screw column structure 17 around the positioning framework 1.Screw column structure 17 is used for the utility model is fixed on application product.
The refrigeration module of prior art is applied in volume when being the 30L product, and the about temperature difference is generally less than 20 degrees centigrade, and above specific embodiment of the present utility model is applied in volume when being the 30L product, and the about temperature difference can reach 32 degrees centigrade.