CN112747497B - A personal thermal comfort device based on the Peltier effect - Google Patents
A personal thermal comfort device based on the Peltier effectInfo
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- CN112747497B CN112747497B CN202110124103.9A CN202110124103A CN112747497B CN 112747497 B CN112747497 B CN 112747497B CN 202110124103 A CN202110124103 A CN 202110124103A CN 112747497 B CN112747497 B CN 112747497B
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- thermoelectric module
- air inlet
- heat dissipation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
- A41D13/005—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
- A41D13/0053—Cooled garments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Textile Engineering (AREA)
- Physical Education & Sports Medicine (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
本发明公开了一种基于帕尔贴效应的个人热舒适装置，包括热电模块、散热风扇、外部封装模块、微型鼓风机、微型软管网络；所述热电模块热冷两侧分别贴附散热板，热电模块和散热风扇通过带通道的外部封装模块组成一体结构，该一体结构的一端连接微型鼓风机，该一体结构的另一端连接微型软管网络；微型鼓风机提供冷或热气流并通过微型软管网络通向特殊服装，为人体全身提供所需热源或者冷源。本发明选用特定的热电模块，散热风扇和散热板，将其组合成一个可拆解、便携化热电转换装置。选择微型鼓风机将冷能送入特殊服装。整套设备具有便携化、能效优、可控温的优点。结合建筑采暖通风中央空调系统，可以建立局部热环境，改善个人热舒适度。
The present invention discloses a personal thermal comfort device based on the Peltier effect, comprising a thermoelectric module, a cooling fan, an external packaging module, a micro-blower, and a micro-hose network. Heat sinks are attached to the hot and cold sides of the thermoelectric module, respectively. The thermoelectric module and the cooling fan form an integrated structure via an external packaging module with a channel. One end of the integrated structure is connected to the micro-blower, and the other end is connected to the micro-hose network. The micro-blower provides a cold or hot air flow that is directed to a special garment through the micro-hose network, providing the required heat or cold source for the entire body. The present invention utilizes a specific thermoelectric module, a cooling fan, and a cooling plate, combining them into a detachable, portable thermoelectric conversion device. A micro-blower is selected to deliver cold energy to the special garment. The entire device has the advantages of portability, excellent energy efficiency, and controllable temperature. Combined with a building's central heating, ventilation, and air conditioning system, it can establish a local thermal environment and improve personal thermal comfort.
Description
Technical Field
The invention relates to a personal thermal comfort device based on a Peltier effect under the background of a personal thermal management control device, and belongs to the technical field of thermoelectric conversion.
Background
The earliest personal heat management device is developed to meet the requirements of modern war and solve the problems of overquick physical energy consumption, inattention, slow brain response and the like of operators caused by heat stress effect in a high-heat environment. The clothing used for personal heat management is various, one is heating or cooling through liquid or air, and the other is adding phase change materials to generate chemical reaction for energy conversion.
The use of thermoelectric energy conversion to provide heating and cooling devices is also under investigation at home and abroad, and thermoelectric cooling has rapidly become a practical technology for use in many types of electronic devices. The devices in the market today are also very compact and efficient, and in addition to the advanced internal structural advantages, thermoelectric modules based on the peltier effect are rapidly developing. To keep the temperature of some electronic components stable and ensure the stability and accuracy of the components, a heat dissipating plate and a small heat dissipating fan are often used in combination to cool the electronic devices.
The heat-dissipating plate, the thermoelectric module and the small heat-dissipating fan are combined and assembled into a simple thermoelectric conversion module, but the effect is not obvious, and the temperature regulation range is too small and uncontrollable.
Disclosure of Invention
Aiming at the existing thermoelectric conversion device embryonic, under the background of a personal thermal management control device based on the Peltier effect, which is researched and developed by us, a core component is enabled to exert maximum energy efficiency, a temperature adjustable range is maximized, specific selection of a thermoelectric module and a small cooling fan is determined through simulation and experimental data, fin distribution and structure of a cooling plate are determined, main body packaging structure of the device and air inlet and air outlet layout are determined, and a set of portable thermoelectric energy conversion module with optimal energy efficiency is formed. And combining with a micro-blower, designing the hose layout in the garment, and designing the temperature-controllable personal thermal comfort device.
The personal thermal comfort device based on the Peltier effect comprises a thermoelectric module, a cooling fan, an external packaging module, a micro air blower and a micro hose network, wherein the cooling plate is respectively attached to the hot side and the cold side of the thermoelectric module, the thermoelectric module and the cooling fan form an integrated structure through the external packaging module with a channel, the integrated structure is a thermoelectric conversion device, one end of the device is connected with the micro air blower, the other end of the device is connected with the micro hose network, and the micro air blower supplies cold or hot air flow and leads to clothing designed with the micro hose network so as to supply a required heat source or cold source for the whole body of a human body.
Further, the thermoelectric module comprises a three-layer structure, an intermediate layer monomer is formed by serially connecting a thermocouple formed by bismuth telluride semiconductors and a flow deflector, and aluminum oxide ceramic layers are arranged on two sides of the intermediate layer.
Further, the heat dissipation fan is matched with the thermoelectric module in size, and the heat dissipation fan is provided with a plurality of fan blades.
Further, the heat dissipation plate comprises a hot side heat dissipation plate and a cold side heat dissipation plate;
The hot side heat dissipation plate is made of red copper, and the sheet fins are straight through;
The cold side cooling plate is an aluminum or copper cooling plate, the cooling plate fins are divided into straight through type one-row, four-row and multi-row dense teeth, the thickness optimization range of the cooling side cooling plate fins is 0.5-1.5mm, and the interval optimization range is 0.5-1.5mm.
Further, the overall dimension of the heat-side heat dissipation plate is 40 x 11mm, the thickness of the base is 3mm,25 fins are arranged, and each fin is 0.5mm thick;
The fins of the cold side heat dissipation plate are four rows of fins, the thickness is 0.8mm, and the spacing is 0.6mm.
Further, the external packaging module comprises a device main frame package, and an external air flow air inlet, a packaging rear cover and an air outlet which are respectively communicated with two sides of the device main frame package;
The external air flow air inlet comprises a round hole cylinder air inlet 4 of a round hole cylinder, a rectangular main frame and air inlet connector 5, a smooth curved surface 6, a reserved hole 7 and an inner air inlet 8, wherein the air inlet 4 and the main frame and air inlet connector 5 are connected through the smooth curved surface 6;
The device main frame package is of a shell structure, the top end of the device main frame package is provided with a circular small fan air outlet 12, the left side surface and the right side surface of the device main frame package are symmetrically provided with a second hot side heat radiation vent 16, the rear side surface of the device main frame package is sequentially provided with a small fan line position hole 13, a first hot side heat radiation vent 15, two thermoelectric module line position holes 14 which are horizontally and symmetrically arranged and a corresponding opening 17 of an inner side air inlet 8 from top to bottom;
The packaging back cover and the air outlet comprise a packaging back cover, a connecting smooth curved surface 20 and a round hole column air outlet 21, the packaging back cover is designed into a double-layer structure, the lateral section is an L-shaped shell, one side of the vertical surface of the L-shaped shell is clamped on the front side shell 10, the bottom of the other side of the vertical surface of the L-shaped shell is protruded rectangular end, through the connecting smooth curved surface 20, of the round hole column air outlet 21, and in addition, the other side of the vertical surface of the L-shaped shell is provided with a corresponding opening 22 of the first hot side heat dissipation plate heat dissipation vent 15.
Further, the micro hose network includes a bifurcated Y-topology, or a wrap-around O-topology.
The invention has the technical effects that:
The device comprises six parts, namely a thermoelectric module based on the Peltier effect, wherein the thermoelectric module is of a three-layer structure, an intermediate layer monomer is formed by serially connecting a thermocouple and a flow deflector, and the bismuth telluride semiconductor has natural dissimilarity and is a thermoelectric material with wide application range. The aluminum oxide ceramic layers are arranged on two sides of the middle layer, so that the aluminum oxide ceramic layer has good heat conductivity, mechanical strength and high temperature resistance. The cooling source has obvious effect when being used for cooling in summer.
And secondly, the size of the cooling fan is matched with that of the thermoelectric module, the fan is large in rotating speed and large in air quantity under high power as much as possible, and as the temperature difference delta T of the hot side and the cold side of the thermoelectric module is proportional to the input voltage (delta T-V), the larger the voltage is, the more heat is dissipated to the hot side of the cooling plate, namely the cooling effect of the cold side is better, and the temperature of the cold side can reach 7.8 ℃.
Thirdly, the heat dissipation plates on the two sides are hot and cold, so that the temperature of the cold side reaches lower temperature, the hot side needs to fully dissipate heat, the heat dissipation plates made of red copper are selected, the overall size is 40 x 11mm, the thickness of a base is 3mm, and the thickness of each of 25 fins is 0.5mm. When the input voltage is 4.5V and the current is 2.37A, the temperature of the hot side can be reduced to 30.5 ℃ after passing through the heat dissipation plate. The cold side stores cold energy through the aluminum heat dissipation plate, and the cold side heat dissipation plate is four rows of fins, is 0.8mm thick and 0.6mm apart from, and is little in influence on the wind speed of external air flow and can store a large amount of cold energy.
And fourthly, an external packaging module is used for packaging the thermoelectric module, the radiating plate and the radiating fan into a simple thermoelectric energy conversion device, integrating the module, designing an external air flow air inlet and air outlet and each device wiring and radiating vent, and the packaged thermoelectric conversion device is portable and detachable, and the staggered L-shaped shell is designed to enable external air flow to circularly flow in the shell, so that cold measurement energy storage can be fully taken away by the external air flow.
Fifthly, the miniature blower is provided with an external air flow supply device, the air quantity is large, the air speed is adjustable, and wind energy can be supplied for the operation of the device.
And sixthly, a micro hose network, wherein after cold energy generated by the thermoelectric module is stored in the packaging shell through the cold measuring and radiating plate, external air flow is provided by the micro blower, and cold energy is blown to special clothing woven with the micro hose network for cooling a human body so as to meet the requirement of improving the comfort level of the human body. The human chest and back temperature sensing is sensitive, the Y-shaped topological structure of bifurcation and the O-shaped topological structure of surrounding type are provided, the hose network mainly flows through the chest and the back, and the cooling effect is obvious.
Drawings
FIG. 1, peltier effect basic schematic diagram;
FIG. 2 is a block diagram of a thermoelectric module;
FIG. 3 illustrates a heat dissipation fan configuration;
FIG. 4 shows a structure of a hot side copper heat sink;
FIG. 5, cold side aluminum heat sink structure;
FIG. 6 is an exterior airflow intake enclosure;
FIG. 7, device package mainframe;
FIG. 8, a rear cover and an air outlet;
FIG. 9 shows the layout of hose network in clothing, (a) Y-shaped, and (b) O-shaped;
FIG. 10 is a schematic diagram of a thermoelectric module with heat sinks attached to both sides;
FIG. 11 is an overall schematic diagram of a thermoelectric energy conversion device;
Fig. 12, schematic view of a personal thermal comfort device.
In the figure, a 1-first alumina ceramic layer, a 2-middle layer monomer, a 3-second alumina ceramic layer, a 4-round hole cylinder air inlet, a 5-rectangular connecting body of a main frame and the air inlet, a 6-smooth curved surface, a 7-reserved hole, an 8-inner side air inlet, a 9-side shell, a 10-front side shell, an 11-hot side radiating plate and a small fan are separated, a 12-round small fan air outlet, a 13-small fan line position hole, a 14-line position hole, a 15-first hot side radiating plate radiating vent, a 16-second hot side radiating plate radiating vent, a 17-inner side air inlet 8 corresponding opening, a 18-like L shell vertical surface top end, a 19-like L shell vertical surface rear end, a 20-connecting smooth curved surface, a 21-round hole cylinder air outlet and a 22-first hot side vent 15 corresponding opening.
Detailed Description
The personal thermal comfort device (taking summer refrigeration as an example and also realizing winter heating) based on the Peltier effect mainly comprises:
(1) And a proper thermoelectric module based on the Peltier effect is selected to meet the indexes of the personal heat management device, such as size, voltage, power, working temperature and the like.
(2) And a cooling fan matched with the thermoelectric module in size is selected to meet the indexes of the personal heat management device, such as volume, power, wind speed and the like.
(3) Thermoelectric module hot and cold sides and respectively attaching heat dissipation plates. And determining parameters such as the material of the radiating plates at two sides of the module, the layout and the size of the fins. The method comprises the steps of manufacturing a geometric model of the radiating plate by utilizing UG software, and performing CFD simulation and optimization on the radiating effect by utilizing Fluent software. And determining parameters according to the optimization result.
(4) And (3) according to the sizes of the components selected in the steps (1) - (3), packaging the device by using a 3D printing technology. Meets the portable, detachable and energy efficiency superior thermal management indexes.
(5) The miniature blower is arranged outside the device, and provides external air flow through the hose, so that the indexes such as portability, power, air quantity and the like are met.
(6) And designing the network layout of the miniature hose to meet the optimal index of the energy efficiency of the device.
In the design process (1), the peltier effect is basically characterized in that a pair of thermocouples are made of N, P type semiconductor materials, and after direct current is introduced into the thermocouples, heat absorption and heat release phenomena are generated at the positions of the thermocouple junctions due to different direct current introduction directions. As shown in fig. 1.
The thermoelectric module based on the Peltier effect is composed of three layers (figure 2), a first aluminum oxide ceramic layer and a second aluminum oxide ceramic layer are arranged on two sides (1 and 3 in the figure), and an intermediate layer monomer 2 is formed by serially connecting a thermocouple composed of bismuth telluride semiconductor and a flow deflector with good heat conductivity and electrical conductivity (shown in figure 2). The thermoelectric module in the personal thermal management device needs to meet parameter requirements of length, width, thickness=40×40×3-4 mm, working current is less than 12A, rated voltage is less than 24V, maximum power is 80-150W, and working temperature range is-55-80 ℃.
The three Peltier effect thermoelectric modules meeting the conditions are respectively ZT8-12-F1-4040 type, TEC1-12706 type and TEC1-12710 type. The TEC1-12710 type thermoelectric module has maximum refrigerating power up to 120W and temperature difference between two sides above 58 ℃, and the lowest temperature of the cold side is as low as 7.2 ℃ as tested by experiments, so that a sufficient cold source can be provided for the device. TEC1-12710 thermoelectric module has an external dimension of 40×40×3.4mm, an internal resistance of 1.2-1.5Ω, an operating current imax=10a (15 VMAX voltage on start), a rated voltage DC12V (vmax=15.5v), and an operating environment temperature range of-55 ℃ to 83 ℃. All meet the design requirements.
In the design process (2), in order to make the whole device compact in structure and convenient to package, the size of the cooling fan should be matched with the thermoelectric module, and specific size requirements are that the length is equal to the width=40 is equal to 40mm. Other parameters require that the direct current voltage is 12V, the current is less than 1A, the rotating speed of the fan is more than 10000RPM, and the working humidity range is 45-85%. The fan should have the configuration shown in fig. 3.
Compared with three types of cooling fans, the cooling fans are LFFAN-LFS0412SL (DC: 12V 0.30A), TELTA-AFB0412SHB (DC: 12V 0.35A) and SAN ACE40-9GV0412P3J11 (DC: 12V 0.60A) respectively, wherein TELTA-AFB0412SHB (DC: 12V 0.35A) is provided with seven blades, the external dimension is 40-40 mm,12V direct current power supply is realized, the cooling fan can work in an environment with relative humidity of 45-85%, sufficient cooling air quantity and air pressure are realized, the air quantity is large (14.83 CFM), the working noise is small, and the fan rotating speed can reach 11000RPM. Each parameter meets the design requirements.
In the design process (3), the temperature difference delta T at two sides of the thermoelectric module is proportional to the input voltage (delta T-V). In summer, the thermoelectric module is required to store energy on the cold side and dissipate heat on the hot side. The design of the heat dissipation plates at the two sides of the heat exchanger adopts the following different methods.
The hot side heat dissipation plate aims at rapid and full cooling. The material is made of red copper, the sheet fins are of a straight-through type, and other design parameters are that the overall size is 40 x 11mm, the thickness of the base is 3mm, and the thickness of each sheet fin is 25, and each sheet fin is 0.5mm. The structure is shown in fig. 4.
The cold side needs to store cold energy adequately, and its topology and size are key factors. The choice of parameters for the cold side heat sink (heat sink size and fin layout) was optimized using hydrodynamic (CFD) simulation. The basic steps are that UG software is used for manufacturing a geometric model of the radiating plate, and Fluent software is used for carrying out CFD simulation and optimization on the radiating effect. The optimization parameters comprise three aspects of the layout, thickness and spacing of the fins of the heat dissipation plate, wherein the layout is divided into three categories, namely one row, four rows and multiple rows of dense teeth, the optimization range of the fin thickness is 0.5-1.5mm, and the optimization range of the spacing is 0.5-1.5mm. The optimization target is that the cold measurement energy storage effect is optimal. The result shows that the cooling plates with four rows of fins and 0.8mm thickness and 0.6mm spacing can minimize the air flow temperature of the air outlet. The comparison shows that the energy storage effect of the aluminum heat dissipation plate and the copper heat dissipation plate are not greatly different, and the aluminum heat dissipation plate structure shown in fig. 5 is selected in consideration of cost factors, and the overall size is 40×40×11mm.
In the design process (4), ABS consumables are selected for 3D printing, and the designed external packaging module comprises three parts, namely an external airflow air inlet, a device main frame package, a package rear cover and an air outlet.
① The external airflow inlet portion is shown in fig. 6, and the specific dimensions are as follows:
4-a round hole cylinder air inlet, wherein the inner diameter is 7mm, the outer diameter is 11mm, the wall thickness is 2mm, the cylinder length is 13mm, and the air inlet is 8mm away from the center at one side;
5-the connecting body of the main frame and the air inlet, the total width is 8.5mm, the wall thickness is 2mm, and the middle part of the material is saved;
6, a smooth curved surface with the wall thickness of 2mm;
7-a preformed hole, wherein the preformed hole with the diameter of 3.2mm is formed at the distance of 5.5mm from the two ends of the connecting part of the air inlet and the main frame, the hole depth is 6mm, and a wire position is reserved for the thermoelectric module;
8-an inner side air inlet, which is communicated with 4 and 6 through 5, has the length of 32mm and the width of 9mm, is tangent to a semicircular arc with the diameter of 9mm at two sides, is deviated to the same side with a circular hole cylinder of the air inlet, is 2.8mm away from the bottom, and has the distance of 3mm away from the edge.
② The device main frame package portion is shown in fig. 7. A main heat dissipation cavity and a heat dissipation fan air outlet of the heat dissipation plate at the upper side of the part; the lower side of the part is provided with a heat exchange main cavity of the cold side heat dissipation plate. The specific parameters are as follows:
main frame 47 x 50mm, 9-side shell, left and right wall thickness 3mm, 10-front shell, upper and lower wall thickness 2.8mm;
11-the hot side heat dissipation plate is spaced from the small fan by 2mm, 29.3mm from the bottom and 18.7mm from the top;
12-a small fan air outlet, wherein the top end of the small fan air outlet is 38 mm;
13-small fan line holes, 12mm apart from the edge, 9.5mm apart from the center distance 11 and 7mm apart from the edge;
14-thermoelectric module line position holes, 5.5mm from the edge, 15.8mm from the bottom, and two sides are symmetrical;
15-a heat dissipation vent of the first hot side heat dissipation plate, 15 sizes of 34mm long and 10mm wide, clinging to the center position of the lower end 11,
16-A second heat-side heat-dissipating plate heat-dissipating vent, wherein the 16 size is 38mm long and 10mm wide, four corners are arc-shaped, the height is 15 as high as that of the second heat-side heat-dissipating plate, and the two sides of the second heat-side heat-dissipating plate are symmetrical;
17-the corresponding opening of the inner side air inlet 8, and the air inlet is communicated with the inner side air inlet 8.
③ The rear cover and the air outlet are encapsulated partially as shown in figure 8. The packaging back cover is designed into a double-layer shell in consideration of the hardness of materials and the stability of the structure. The rear cover is attached to the groove of the frame, the double-layer wall thickness is 2.5mm, and the width of the middle cavity is 8mm. The design of the outer air outlet is the same as that of fig. 7, and the round hole column air outlet 21 and the inner air outlet are opposite to the air inlet. The air flow forms reflux in the device, so that the heat exchange is convenient to fully realize, and the cold energy generated by the thermoelectric module is carried to blow to the tree-shaped pipeline. The dimensional parameters are as follows:
18-the top end (one side) of the vertical surface of the L-shaped shell is 2.8mm thick with 10, 19-the rear end (the other side) of the vertical surface of the L-shaped shell is 2.5mm thick, and 20-the connecting smooth curved surface is 2mm thick;
22-corresponding opening of the first heat-side heat-dissipating plate heat-dissipating vent 15, the size of which is the same as that of the first heat-side heat-dissipating plate heat-dissipating vent 15, and the corners of which are semicircular.
In the design process (5), the air flow provided by the micro-blower takes away cold energy and leads to the whole body of the human body through a hose network. The micro blower needs to meet the indexes of power, air quantity, volume and the like. The specific parameter requirements are that the wind speed of the wind gap is adjustable by 15-30m/s, the direct current voltage is 24-36V, the power is 50-100W, the wind pressure is 5-10KPa, the size of the machine body is 70mm in diameter, and the height is less than 40mm. The micro-blower WM7040-24V meets various requirements.
In the design process (6), the hose network layout in the clothing is designed, and two network topologies, namely a Y type and an O type are selected, as shown in figure 9.
Fig. 10 is a schematic diagram of two heat dissipation plates attached to two sides of a thermoelectric module. Fig. 11 is an overall effect diagram of the thermoelectric energy conversion device. The refrigerating side of the thermoelectric module is arranged at the lower part, and cold energy is temporarily stored in the lower heat exchange cavity. The air inlet and the air outlet of the external air flow are not in the same straight line, and the left and right staggered design ensures that the air flow can fully take away the cold energy generated by the thermoelectric module. The hot side of the thermoelectric module is provided with ventilation openings on four sides of the package, and a cooling fan is arranged above the hot side cooling plate to help the hot side to sufficiently dissipate heat. According to the characteristics of the selected components and the external packaging module, the device is light in weight, small in size, excellent in energy efficiency and portable enough. The control module is added to realize the control of the temperature output. Fig. 12 shows a schematic view of a personal thermal comfort device of a particular garment construction of a thermoelectric conversion device in combination with a micro blower, a woven hose network.
The design process of the invention comprises 1) selecting proper thermoelectric module capable of fully supplying heat, specifically parameters such as direct current power supply, working environment of-50-80 ℃, refrigeration power of 50-120W, maximum temperature difference of 40-80 ℃ and appearance size of 40 x mm, 2) selecting proper hot side cooling fan, specifically parameters such as direct current power supply, 12V or 24V working voltage, power of 4-12W, rotation speed of 5000-12000RPM, air volume of 5-16CFM and appearance size of 40 x mm, and 3) customizing cooling plates with different materials and different topological structures on the hot side and the cold side. The topological structure is optimized, and the heat dissipation capacity is optimal, and the specific parameters are that a straight-through fin copper heat dissipation plate is selected on the hot side, a four-row fin aluminum heat dissipation plate is selected on the cold side, the heat dissipation plates on the hot side and the cold side are attached to the two sides of the module to enhance the heat and cold conduction effect, and 4) an external packaging module model is designed. And 5) selecting a miniature brushless direct current blower to provide external air flow, and blowing cold energy generated by the thermoelectric conversion device to a human body through a miniature hose network, thereby achieving the purpose of improving the thermal comfort of the human body. The specific parameters of the blower are that the input voltage is 24-36V, the power is 50-100W, the idle rotation speed is 30000-50000rpm, the maximum air quantity is 200-300L/min, the air pressure is 5-10KPa, 6) a miniature hose network is embedded in the garment, the network is composed of Y-shaped and O-shaped hoses, and the cooling effect of the human body is enhanced.
The invention selects a specific thermoelectric module, a cooling fan and a cooling plate, and combines the specific thermoelectric module, the cooling fan and the cooling plate into a detachable and portable thermoelectric conversion device. A micro-blower is selected to send cold energy into the special garment. The whole set of equipment has the advantages of portability, excellent energy efficiency and controllable temperature. The central air conditioning system for building heating and ventilation can be combined with a central air conditioning system for building heating and ventilation, can build local heat environment and improve personal heat comfort, and can widen the temperature setting range of the central air conditioner by using a smaller device, thereby reducing the whole energy consumption of the building and having huge application potential.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (2)
1. The personal thermal comfort device based on the Peltier effect is characterized by comprising a thermoelectric module, a cooling fan, an external packaging module, a micro air blower and a micro hose network, wherein the cooling plate is respectively attached to the hot side and the cold side of the thermoelectric module, the thermoelectric module and the cooling fan form an integrated structure through the external packaging module with a channel, the integrated structure is a thermoelectric conversion device, one end of the thermoelectric conversion device is connected with the micro air blower, and the other end of the thermoelectric conversion device is connected with the micro hose network;
The thermoelectric module comprises a three-layer structure, wherein an intermediate layer monomer is formed by serially connecting a thermocouple formed by bismuth telluride semiconductors and a guide plate, and aluminum oxide ceramic layers are arranged on two sides of the intermediate layer;
the heat radiation fan is matched with the thermoelectric module in size, and is provided with a plurality of fan blades;
the heat dissipation plate comprises a hot side heat dissipation plate and a cold side heat dissipation plate;
The hot side heat dissipation plate is made of red copper, and the sheet fins are straight through;
the cold side radiating plate is an aluminum or copper radiating plate, the radiating plate fins are divided into straight-through type one-row, four-row and multi-row dense teeth, the optimized range of the thickness of the cold side radiating plate fins is 0.5-1.5mm, and the optimized range of the spacing is 0.5-1.5mm;
The overall size of the hot side heat dissipation plate is 40 x 11mm, the thickness of the base is 3mm, and the thickness of each fin is 25, and is 0.5mm;
The fins of the cold side heat dissipation plate are four rows of fins, the thickness is 0.8mm, and the spacing is 0.6mm;
the external packaging module comprises a device main frame package, and an external airflow air inlet, a packaging rear cover and an air outlet which are respectively communicated with two sides of the device main frame package;
The external airflow air inlet comprises a round hole cylinder air inlet (4), a rectangular main frame and air inlet connector (5), a smooth curved surface (6), a preformed hole (7) and an inner air inlet (8), wherein the air inlet (4) is connected with the main frame and air inlet connector (5) through the smooth curved surface (6), the preformed hole (7) is formed at two ends of two adjacent side surfaces of the main frame and air inlet connector (5), and a wire position is reserved for a thermoelectric module;
The device main frame package is of a shell structure, a circular small fan air outlet (12) is arranged at the top end of the device main frame package, a second hot side heat radiation vent (16) is symmetrically formed on the left side surface and the right side surface of the device main frame package, a small fan line position hole (13), a first hot side heat radiation vent (15), two thermoelectric module line position holes (14) which are horizontally and symmetrically arranged and a corresponding opening (17) of an inner side air inlet (8) are sequentially formed on the rear side surface of the device main frame package from top to bottom;
The packaging rear cover and the air outlet comprise a packaging rear cover, a connecting smooth curved surface (20) and a round hole column air outlet (21), the packaging rear cover is designed into a double-layer structure, the lateral section is an L-shaped shell, one side of the vertical surface of the L-shaped shell is clamped on the front side shell (10), the rectangular end of the bottom of the other side of the vertical surface of the L-shaped shell is connected with the round hole column air outlet (21) through the connecting smooth curved surface (20), and in addition, the corresponding opening (22) of the first hot side heat dissipation vent (15) is formed in the other side of the vertical surface of the L-shaped shell.
2. A personal thermal comfort device based on peltier effect as recited in claim 1, wherein the micro hose network comprises a bifurcated Y-topology or a wrap-around O-topology.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110124103.9A CN112747497B (en) | 2021-01-29 | 2021-01-29 | A personal thermal comfort device based on the Peltier effect |
| GB2305927.2A GB2614682B (en) | 2021-01-29 | 2021-03-09 | Personal thermal comfort device based on Peltier effect and thermal management method based on Peltier effect |
| PCT/CN2021/079741 WO2022160416A1 (en) | 2021-01-29 | 2021-03-09 | Personal thermal comfort device based on peltier effect, and thermal management method |
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| CN202110124103.9A CN112747497B (en) | 2021-01-29 | 2021-01-29 | A personal thermal comfort device based on the Peltier effect |
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| CN112747497A CN112747497A (en) | 2021-05-04 |
| CN112747497B true CN112747497B (en) | 2025-08-29 |
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| CN115969114B (en) * | 2022-12-22 | 2024-10-01 | 苏州科技大学 | A smart temperature-regulating clothing based on the Peltier effect |
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| US5623828A (en) * | 1996-04-05 | 1997-04-29 | Harrington; Steven S. | Thermoelectric air cooling device |
| CN208837135U (en) * | 2018-09-29 | 2019-05-10 | 任鹏 | Air-adjustable equipment and air-adjustable clothes |
| CN214949902U (en) * | 2021-01-29 | 2021-11-30 | 江苏大学 | A personal thermal comfort device based on the Peltier effect |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017017698A2 (en) * | 2015-07-29 | 2017-02-02 | Kaprekar Shridhar Mahadeo | Novel body temperature maintaining apparels |
| WO2017048198A1 (en) * | 2015-09-18 | 2017-03-23 | Advanced Material Engineering Pte. Ltd. | Protective vest with active and passive cooling mechanisms |
| CN210353296U (en) * | 2019-07-18 | 2020-04-21 | 郑州郑大智能科技股份有限公司 | Portable semiconductor air-conditioning suit |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5623828A (en) * | 1996-04-05 | 1997-04-29 | Harrington; Steven S. | Thermoelectric air cooling device |
| CN208837135U (en) * | 2018-09-29 | 2019-05-10 | 任鹏 | Air-adjustable equipment and air-adjustable clothes |
| CN214949902U (en) * | 2021-01-29 | 2021-11-30 | 江苏大学 | A personal thermal comfort device based on the Peltier effect |
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