Heat exchange unit
SUBSTANCE: heat exchange unit consisting of air and water heat exchangers tightened with screws, between which there installed in thermal contact are thermoelectric coolers located in the form of a rectangle and enveloped with a safety barrier; in addition, it is equipped with a terminal box that is located on the outer side of the water heat exchanger and connected to a cavity in which thermoelectric coolers and temperature sensors are located by means of passages made in the wall of the water heat exchanger. In the above passages there located are electrical wires of coolers and sensors, the outputs of which are fixed on the terminal plate installed in the terminal box, to which a cable for external connections is connected through a packing seal.
EFFECT: increasing air tightness of the structure, improving reliability and service life, increasing control efficiency due to possible variation of current-carrying circuits of coolers.
4 cl, 3 dwg
The invention relates to refrigeration equipment, namely, thermoelectric cooling plants, and can be used, for example, for cooling air in the food pantries on vessels in harsh environments, and air conditioning equipment.
The principle of operation of the heat exchange device (thermoelectric module (TEM) is based on the Peltier effect, when passing a constant current through the contact of two dissimilar metals (semiconductors), consists of TEM, one of the contacts is cooling (absorption of heat), and the other heat.
The level of technology
Known thermoelectric heat exchange device consisting of air, hydraulic heat exchangers, between which is in thermal contact with two or more thermoelectric coolers, forming a flat layer, the latter being surrounded by a perimeter protective barrier from nizkoteploprovodnye material, and the heat exchangers between a tightened screws - EN 2187052 F25B 21/02, 14.12.2000, EN 2092753 F25B 21/02, 13.06.1996, EN 2364803 F25B 21/02, 18.09.2007, EN 2397074 B60H 1/32, 01.09.2008, EN 2234647 F25B 21/02, 27.11.2002.
As the closest analogue (prototype) selected thermoelectric refrigeration unit EN 2092753 F25B 21/02, 13.06.1996. The block contains two or more thermoelectric coolers, hot and cold junctions to the verge installed radiators. The space between the radiator and the space between the hot and cold junctions filled with moisture-proof insulating material, the heat sink the hot junctions made in the form of Autonomous sections, mounted on only one thermoelectric cooler, the radiator and fan for ventilation are placed in the casing, having the form of a cone with a narrowing in the direction of the radiator. Openings for entry and exit of air is made on the opposite end sides of the casing.
The disadvantages of the prototype can be attributed to the low reliability of the device, as it partially solved the problem of tightness of the structure, leading to low level of protection of thermoelectric coolers and conductor circuits from condensation.
This is because the protecting layer of heat-insulating material around and/or between thermoelectric coolers is designed, primarily, to reduce the heat leakage to the surface to be cooled heat exchanger that does not guarantee protection of thermoelectric coolers and placed near them different kinds of temperature sensors from moisture (condensate). Does not resolve the issue and use as insulation expanded onto materials (polyurethane foam), as the foaming process in a narrow or zatesnennye spaces causes technological difficult the tee. Even more are not sealing correctly fence of solid foam materials, such as foams.
An urgent problem is to protect from condensation of current-carrying circuits and thermoelectric coolers, because the water in them for long (1000 hours or more) work contributes to the electrochemical corrosion with subsequent destruction. The reduction in the reliability of the electrical insulation of the circuit relative to the housing is unacceptable, especially for marine cooling devices are powered directly from the ship's DC network, in which the decrease in the value of the resistance of the insulation is tantamount to failure.
The problem to which the invention is directed, is to create a new robust design of heat-exchange devices operating in harsh environments on ships.
The technical result of the invention is to improve the tightness of the design, increased reliability, increased service life, increase management efficiency, due to the possibility of variation of the switching current-carrying circuits coolers.
Disclosure of inventions
The task is solved as follows. Heat exchanger consists of tightened screws air and water heat exchangers, between which is in thermal contact established thermoelectric Oh editeli, located in the form of a rectangle and surrounded by a protective barrier. The device differs in that it is additionally equipped with a terminal box, which is located on the outer side of the water heat exchanger and is connected with a cavity in which are thermoelectric coolers and temperature sensors, through channels made in the wall of the water heat exchanger, while in the above-mentioned channels are electrical wires coolers and sensors whose outputs are mounted on the terminal Board installed in the terminal box, in which through the gland seal summed cable for external connections. Terminal box is further provided with a desiccant, such as silica gel.
In addition, a protective barrier device is formed of two strands of square section, which is installed with a gap relative to each other, with one of the harnesses is located on the air heat exchanger, the other on the water, and on the outer side surfaces of the barrier coated the silicone sealant.
The implementation of the invention
The invention is illustrated by drawings. In Fig.1 shows the device in section, Fig.2 - section a-a of Fig.1, in Fig.3 - node connection fin air heat exchanger.
Heat exchanger contains air t is ployment 1 and the water heat exchanger 2, between which is placed a flat, rectangular layer of thermoelectric coolers 3 and temperature sensors 4. The heat exchangers 1 and 2 are drawn along the contour of the screws 5. The force of the coupler is locked to the lugs 6, which are installed between the heat exchangers on the perimeter and in the center. The screws 5 to transmit power to the heat exchanger 2 through metaloproteinase thrust bearing 7. The channels 8 in the wall of the heat exchanger 2 connect the cavity occupied by thermoelectric coolers 3, with the terminal box 9, located on the external side of the heat exchanger 2. On the box set cover 10, which is fixed by screws with seals (not shown). In the box 9 is made stuffing enter 11 for installation of the cable external connections. The wires from thermochemically and temperature sensors soldered on the terminal Board 12 that is installed in the terminal box 9. This same Board 12 are summed and potpan cable external connections. In a box placed packing silica gel 13. The lateral surface of thermoelectric coolers 3 surrounded by a protective barrier of the two rubber bands 14 and covered the outside of a single continuous protective coating, for example, of silicone sealant 15.
To improve heat transfer at the surface of contact of thermoelectric coolers 3 applied silicone heat-conducting paste (CPT-8). Cool and mounted on insulating strips 16. Fin air heat exchanger 17 is pressed into the base 18 of the heat exchanger 1.
The device operates as follows. When the Assembly of the heat exchangers 1 and 2 tighten screws 5 up until the heat exchangers will not converge to a distance equal to the height of the stops 6, which is a few tenths of a millimeter greater than the height of thermoelectric coolers 3. Thermoelectric coolers initially feel some pressure, transmitted to them from the heat exchanger through the heat-conducting paste, but when it stops, stop the convergence of the heat exchanger, thermally conductive silicone paste, possessing appreciable fluidity, will ease the pressure on the coolers. When the thickness of the layer of paste on both sides of the cooler will be equal to the difference between the heights of the stops and coolers, pressure on the latter will cease and all further operation of the device will occur when fully mechanically unloaded the coolers. To avoid displacements (in the conditions of shaking and vibration) thermoelectric coolers 3, communication with the heat exchange surfaces made only with the help of a viscous heat-conducting paste applied strips 16 made of insulating material and having a profile that holds coolers from linear displacements. The strap 16 by screws fastened on the wall of the water heat exchanger is 2. Error 16 is also fixed electrical conductors from thermoelectric coolers and temperature sensors 4.
Protective barrier thermoelectric coolers is formed of two strands of square section 14. One harness taped to air heat exchanger 1, the other to the water 2. Between the bundles is provided a gap of from 0.5 to 2.0 mm When the coating on the outside harness silicone sealant 15 to form a continuous protective layer overlying the gap between the bundles. When the device is switched on when the temperature of both heat exchangers can vary significantly, protective barrier, having elasticity, maintains mechanical strength and vapor moisture-proof. The wires from thermoelectric coolers 3 and temperature sensors 4 through the channels 8 in the wall of the water heat exchanger 2 output in the terminal box 9. Terminal box tightly closed with the cap 10, and the cable connection is carried out through the stuffing box buxu. Thus, the operation of thermoelectric coolers 3 is in a completely sealed area, which excluded the access of water vapor. For a complete elimination in a sealed area of the residual water vapor in a terminal box attached packing silica gel 13.
Removing cables the current-carrying circuits of all thermoelectric coolers on the terminal Board 12 inside the terminal box 9 call which allows to quickly vary the switching circuit coolers and select the required values for the characteristics of the device.
Thus, the present invention by combining the different connections of the current-carrying circuits thermochemically is possible to change and to choose the necessary characteristics of any possible options-parallel connection, which increases the efficiency of its management. In previously known devices (for example, EN 2397074) was provided by the possibility of combining different compounds, but only in the process of its manufacture (by connecting modules on the current sites inside the structure).
In the present invention is used 24 thermoelectric cooler. As shown by tests, this is a reasonable number for maximum number of combinations necessary connection options. The device 24 thermoelectric coolers optimally well as dimensions and weight (about 12 kg), making it convenient for use in refrigerating plants of various capacity.
To avoid the destruction of places of pressing ribs 17 in the base 18 of the heat exchanger 1 (at negative temperatures of the cooled air in the conditions of dew and frost formation) zone offset (Fig.3) is treated with a waterproof varnish, for example UR-231, which fills all leaks, cracks, micropa the spine, inevitably remain after pressing ribs. Thus preventing the flooding of these leaks and cracks. Thus, the reliability of the TEC module is increased.
When the device is in the courts in the water heat exchanger serves for cooling water, the temperature of which may reach 5°C. the outer walls of the heat exchanger can drop the dew. Prolonged exposure to condensed moisture on the walls of the heat exchanger can cause increased corrosion. In addition, as experience shows, the amount of condensed moisture on the walls of the heat exchanger in the hour can be up to 100 ml, which is equivalent to an additional heat load of 60 watts. When the estimated load on the heat exchanger 600 watt additional load from the condensate can be taken into account. To improve the efficiency of water heat exchangers and increase the corrosion resistance of the outer surface of the water heat exchangers are covered with liquid ceramic insulation coating type "Corundum", excluding the loss on the covered surfaces of the condensate.
1. Heat exchanger, consisting of tightened screws air and water heat exchangers, between which is in thermal contact established thermoelectric coolers located in the form of a rectangle and surrounded by sametimeserver, characterized in that it further provided with a terminal box, which is located on the outer side of the water heat exchanger and is connected with a cavity in which are thermoelectric coolers and temperature sensors, through channels made in the wall of the water heat exchanger, while in the above-mentioned channels are electrical wires coolers and sensors whose outputs are mounted on the terminal Board installed in the terminal box, while in the above box through the gland seal summed cable external connections, and a protective barrier is formed of two strands of square section, which is installed with a gap relative to each other, one harness is located on the air heat exchanger, the other on the water, and the outer lateral surface of the protective barrier covered by a continuous layer of coating.
2. Heat exchanger under item 1, characterized in that the terminal box is further provided with a desiccant, such as silica gel.
3. Heat exchanger under item 1, characterized in that between the wiring provided a gap of from 0.5 to 2.0 mm
4. Heat exchanger under item 1, characterized in that on the outer side surfaces of the protective barrier is a coating of silicone sealant.
SUBSTANCE: invention represents a quick freezer comprising a refrigerator with a hydraulic main which is connected to a pump through parallel heat exchanges contacting with one surface of thermoelectric modules, the second surface of which contacts with thermally conductive plates. The thermally conductive plates contact in their turn with a cooling pack placed in between. The thermoelectric modules are provided with a power supply isolated from the thermally conductive plates, with the cooling packs placed in between, by an insulating wall with power cables of the thermoelectric modules passing therethrough. A cavity formed by the thermally conducting plates is filled with a fluid wherein cooling model sets are placed; a freezing temperature of the fluid is below that of cold junctions of the thermoelectric modules placed on the outer side of the sealed cavity.
EFFECT: quicker freezing of products and solutions, particularly plasma and blood.
2 cl, 2 dwg
SUBSTANCE: control system of temperature fluid comprises two sets of elements of temperature control, located opposite each other and forming between them an area of temperature control. The piping system in the area of temperature control forms a single fluid flow path, which may have alternating first and second parts of the fluid. One or more first parts are located adjacent the first set and have a heat conducting connection with it and one or more second parts are located adjacent the second set and have a heat conducting connection with it. The temperature control system can be used as a module of cooling or heating fluid in the device or the system of supplying cold fluid, such as drinking water or the device of supplying other beverage.
EFFECT: use of this group of inventions enables to improve cooling efficiency.
20 cl, 22 dwg
SUBSTANCE: thermoelectric cooling unit is applied in refrigerating engineering. A thermoelectric cooling unit includes two or more thermoelectric modules (2) arranged in sealed chamber (4) pre-vacuumised and filled with dry gas. Hot junctions of thermomodules are connected to liquid radiator (6) of the sealed chamber, and cold junctions are connected to condensers (7). Into each condenser there built are three independent thermosyphons (8) with internal steam lines (10); besides, evaporation zone (9) of thermosyphons is in the housing of air radiator (3) separated with heat-insulating insert (5) from the liquid radiator of the sealed chamber, which provides unidirectional heat transfer in case of power interruption of thermoelectric modules. Heat-insulated housing (1) forms internal and external thermal circuits. Fan (11) and electric heater (12) are installed on the air radiator housing.
EFFECT: use of the invention provides electric energy cost reduction.
SUBSTANCE: device includes a thermoelectric battery used as a thermal pump and connected to an AC network through a rectifier and a temperature regulator and consisting of thermoelectric modules, the plates of which are thermally connected to heat exchangers respectively for supply of low-potential heat and removal of heat to the heated room. The thermoelectric battery is made of one or several parallel connected electrical circuits, each of which is formed with series connected thermoelectric modules, the number of which in the circuit is determined by the following ratio: n=KUo/Umax, where Uo - supply voltage of thermoelectric battery at the rectifier outlet, Umax - maximum allowable supply voltage of one module of the circuit, K=2-5 - electric load reduction factor of one module.
EFFECT: increasing the ratio of generated thermal power to consumed electrical power.
SUBSTANCE: in a thermoelectric module, the space enclosed between inner surfaces of heat exchange plates is filled with waterproof heat insulating coating that is inert to materials of elements of the thermoelectric module, with heat conductivity equal to and less than 0.001 W/m·K to volume V, where Vmin is restricted with outer surfaces of peripheral branches of peripheral rows of thermal elements of a thermoelectric module and end surfaces of heat exchange plates, and Vmax is restricted with inner surfaces of heat exchange plates of hot and cold joints, switching buses and end surfaces of heat exchange plates. Technical result of the invention is increase in maximum temperature difference of cold and hot joints at the module hot side temperature of Thot=27°C and increase in maximum cooling capacity.
EFFECT: avoiding heat transfer due to emission, heat conductivity and convection through air between the plates of cold and hot joints.
SUBSTANCE: system comprises a control unit and a thermoelectric unit, comprising a base with a heat insulation gasket with one or more through holes for installation of one or more thermoelectric assemblies, comprising a thermoelectric battery installed between the joined external radiator-heat exchanger, which is directly pressed to the plate of the thermoelectric battery and the inner radiator-heat exchanger, which is pressed to its other plate via a heat conductor, extended to formation of a gap with the value of 1-5 mm between the base and the surface of the external radiator. On radiators there are DC fans installed, at the same time minus terminals of both fans of basic assembly via a control unit switch are connected to a minus terminal of its source of supply, a plus terminal of the inner radiator fan is connected to the plus terminal of the source of supply, and the plus terminal of the external radiator fan is connected with the output terminal of the switchboard, onto which during operation of the unit in the heating mode the negative polarity of thermoelectric battery supply is installed.
EFFECT: increased cold efficiency in the mode of cooling and increased reliability in the heating mode, reduced consumption of power, dimensions.
SUBSTANCE: invention refers to medical equipment and aims at producing apparatuses implementing an optimum program of reverse thermal exposure on a human body area. The device comprises a control element in the form of series or parallel connected groups with series or parallel connected thermocouples, temperature sensors arranged on the thermally exposing surface of the control element, a direct current source, a first switch with its input connected to a DC source and with its output connected to the groups of thermocouples, a program control unit, a control unit of thermal power of the thermocouples contacts of which are in a supply circuit of the thermocouples, a two-temperature selector, a comparison unit, a second switch a control input of which is connected to an output of a program control unit. Outputs of the two-temperature selector are connected to input of the second switch an output of which and an output of the temperature sensors are connected to inputs of the comparison unit connected to a control input of a control unit.
EFFECT: use of the invention provides the higher performance of the device.
SUBSTANCE: invention refers to medical equipment, more specifically to diagnostic systems based on temperature skin sensitivity detection. A patient skin cold and warm receptor sensor comprises a thermode (3), a thermode temperature sensor and metre (7), a heat module (1), which implements the Peltier effect and containing heat exposure (2) and heat exchanger (4) surfaces, radiator system (5), a direct current source (10), a first switch (11), a second switch (13), a control signal generator (14), a dual-channel temperature metre controller (12), a pulse counter (16), a patient-controlled pulse generator (15). The thermode (3) is equipped on the heat exposure surface (2) of the heat module (1); the radiator system (5) is placed on the heat exchange surface (4) of the heat module (1); a temperature sensor (7) is positioned in the thermode channel (3). Outputs of the direct current source (10) are connected to inputs of the first switch (11); outputs of the first switch (11) are connected to poles of the heat module (1); outputs of the temperature sensor (7) are connected to inputs of the dual-channel temperature metre controller (12). Each switching output of the dual-channel temperature metre controller (12) is connected to one of the two inputs of the second switch (13); output contacts of the second switch (13) are in a circuit of the power supply of the heat module (1). An output of the control signal generator (14) is connected in parallel to control inputs of the first and second switches (11, 13), and an output of the pulse generator (15) is connected to an input of the pulse counter (16).
EFFECT: invention shall simplify the heat circuit of temperature skin sensitivity detectors.
4 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: device includes a vortex tube with a tangential inlet, a swirler and a braking device, cold and hot heat exchangers, between which thermoelectric modules are installed. Heat exchangers are made in the form of pipelines of trapezoidal section and arranged in turn along the vortex pipe on its outer side: hot - cold - hot, etc. in a circumferential direction with radial gaps relative to each other. Thermoelectric modules are adjacent with one of their flat thermosensitive surfaces to the lateral side of the pipeline of trapezoidal section of hot heat exchangers, and with the other flat thermosensitive surface to the lateral side of pipeline of trapezoidal section of cold heat exchangers.
EFFECT: improving reliability; enlarging functional capabilities; reducing temperature dissipation of hot and cold flows; increasing the efficiency.
3 cl, 6 dwg
SUBSTANCE: invention relates to field of medicine and can be used at stations of blood transfusion, in surgical and resuscitation departments of hospitals and clinics, as well as in medical research institutions. Device for freezing blood components, placed in polymeric containers, contains consisting of two connected to each other by means of hinge, parts, thermally isolated case with lock, control system, two temperature sensors, two units of semiconductor thermal batteries based on Peltier elements, unit of emergency alarm and recordation of process parameters, connected with system of visual and sound alarm and sensor of circuit voltage, sensor of door position and electric power supply source. Working chamber, shape of internal surface of which repeats shape of external surface of polymeric container with blood components, is placed in thermally isolated case. Device additionally contains first and second systems of forced air cooling, with each of units of semiconductor thermal batteries based on Peltier elements being in direct thermal contact with respective part of working chamber; in each of two parts of thermally isolated case made are through air channels, connected with respective systems of forced air cooling.
EFFECT: invention ensures high rate of freezing with low energy consumption.
2 cl, 1 dwg
FIELD: manufacture of thermoelectric ice-making machines.
SUBSTANCE: proposed thermoelectric ice-making machine has housing with ice mold mounted on it which is provided with thermoelectric modules and straight-flow heat exchangers on vertical walls and hinged cover under it, reservoir above ice mold and polarity selector switch of thermoelectric modules. Thermoelectric ice-making machine is provided with water filter mounted in housing above reservoir equipped with thermoelectric modules and straight-flow heat exchangers on its vertical hat-conducting walls, drain branch pipe with cock fitted on the outside of housing under reservoir and reversible motor mechanically linked with pusher located between vertical walls of ice mold and hinged cover; water filter is hydraulically connected with reservoir, straight-flow heat exchangers of reservoir and ice mold; reservoir is hydraulically connected with drain branch pipe and ice mold.
EFFECT: increased productivity of ice-making machine.
6 cl, 5 dwg
FIELD: electric engineering.
SUBSTANCE: device has computer system block, thermoelectric module, cooling system block, heat drain for draining heat from thermoelectric module to environment, heat guide for draining heat from cooled computer system block, thermoelectric module for thermostatting of processor, container with melting substance, heat guide for draining heat from thermoelectric module, processor, power block.
EFFECT: higher reliability, higher efficiency, broader functional capabilities.
FIELD: refrigerating engineering; small-sized thermoelectric coolers for drinks used in automobile transport facilities.
SUBSTANCE: proposed thermoelectric container has casing with handle and thermoelectric module mounted vertically inside it; said module is provided with heat sink in form of radiator with electric fan and heat-conducting plate, cup-shaped insert with threaded cover for vertical motion and removal from casing; provision is made for power supply polarity switch for thermoelectric module and cord with plug. Casing is provided with flat spring projecting inside casing opposite heat-conducting plate, electric sensor showing availability of cup-shaped insert in casing and easily detachable plate with fastening holes located under casing. Cover of cup-shaped insert is provided with central hole and damper above it mounted on axle for lateral shift.
EFFECT: ease in use; extended functional capabilities.
3 cl, 7 dwg
FIELD: cooling equipment, particularly to produce cold in autonomous fixed and movable devices, for instance in domestic refrigerators.
SUBSTANCE: refrigerating plant comprises cooled chamber and intermediate coolant circulation loop. The loop includes pump, outer heat-exchanger with fan and thermoelectric cooling unit arranged in cooled chamber and having thermoelectric modules. The thermoelectric modules comprise heat-absorbing and heat-generating junctions. Heat-removing tube is installed in cooled chamber wall. The heat-removing tube is made as a cup in which outlet tube is arranged so that the outlet tube is spaced from heat-removing tube bottom to create annular heat-dissipating channel. Heat-generating junctions of thermoelectric modules are installed on outer surface of heat-removing tube so that the heat-generating junctions are uniformly distributed along heat-removing tube length. Heat-generating junctions are arranged in cooled chamber. Outlet tube is connected to pump inlet. Pump outlet is attached to heat-exchanger inlet. Heat-exchanger outlet is linked with heat-removing tube. Outer surface of heat-removing tube is cylindrical or polyhedral. Cross-sectional area of annular heat-dissipating channel is not less than that of outlet tube. Width of gap between inlet section of outlet tube and heat-removing tube bottom is not less than 0.25 from inner diameter of outlet tube. Outlet tube has orifices inclined towards fluid flow in outlet tube and formed in area of thermoelectric cooling module arrangement.
EFFECT: increased efficiency due to reduced heat losses and reduced power inputs, extended range of application due to extended temperature range of plant operation and simplified usage.
3 cl, 6 dwg
FIELD: heating or cooling systems.
SUBSTANCE: proposed device depending for its operation on Peltier effect has thermoelectric battery assembled of Peltier cells. Battery has two thermal-contact surfaces and at least two electric contacts. Switch is inserted in battery power conductor in series with circuit for measuring potential difference across battery electric contacts. Device also has switch control safety gear that functions to cyclically vary its position. At least one surface of thermoelectric battery can mount temperature transducer; newly introduced in device is electronic thermometer incorporating unit that compares measured temperature with desired value and is connected to temperature transducer and to switch safety gear.
EFFECT: reduced temperature setting transient time and temperature measurement error.
2 cl, 2 dwg
FIELD: apparatuses for producing metallic belts with amorphous structure.
SUBSTANCE: apparatus includes inductor where consumable metallic rod and rotating drum with cooled surface are arranged. Drum is in the form of hollow cylinder with central one-piece metallic axle. Thermoelectric different-power modules are mounted inside drum for producing belt with cyclically alternating properties. Heat absorbing junctions of modules are in contact with inner side of lateral surface of drum. Heat separating junctions of modules are in contact with one-piece metallic axle.
EFFECT: enhanced efficiency of apparatus, improved quality of belts with amorphous structure.
2 cl, 1 dwg
FIELD: medicine, applicable for local temperature affect on reflexogenic zones of human lower extremities, may be also used for a curative massage.
SUBSTANCE: in a rubber cloth the device has elements consisting of a thermoelectric module, whose first junctions are in a thermal contact with an applicator, which has a great number of metal lugs, and the second junctions - with a heat exchanger. Supply circuits of the thermoelectric modules are laid in the rubber cloth. The device represents a bag having the shape of the human lower extremity, it is made of rubber cloth and provided in the upper section with a tie for tightening and a branch pipe for connection of the vacuum cleaner hose. The applicator is made in the form of a metal plate, one of its plane surfaces has saw-tooth lugs, and the other is in a thermal contact with the first junctions of the thermoelectric module. The gap between the heat exchanger made in the form of an air aluminium radiator and the metal plate free of the thermoelectric module is filled with a dielectric compound. The thermoelectric modules are connected to the supply circuits so as to obtain a staggered temperature field.
EFFECT: produced an arbitrary temperature gradient of the applicator.
FIELD: transport engineering; air conditioning system.
SUBSTANCE: invention can be used in cabs of passenger and cargo vehicles. proposed air cooling and heating plant has unit of thermoelectric batteries with supply source and channels to pass liquid heat carrier from side of hot and cold heat transfers said heat transfers are connected to closed circulation circuits of hot and cold heat carriers. Cold heat carrier circulation circuit includes air radiator-cooler and first circulating pump. Hot heat carrier circulation circuit includes radiator-heater and second circulating pump. Radiator-heater and radiator-cooler are furnished with fans to blow through heated and cooled air, respectively. Thermoelectric battery unit is installed in housing in which two equal-volume spaces are formed. Heat exchange radiators are installed on cold and hot heat transfers whose packing factor is not less than 1000m2/m3.
EFFECT: simplified design, improved weight and dimension characteristics, reduced cost of servicing, improved ecological safety in operation.
FIELD: temperature control units for rocketry and space engineering.
SUBSTANCE: proposed thermostatting system includes propellant tank, heat-transfer loop with heat exchanger and supercharger, cooling radiator and two thermo-electric batteries. "Cold" commutating plates of these batteries on which first temperature sensors are mounted form thermal contact with external surface of tank over entire external surface. "Hot" commutating plates on which second temperature sensor (common for two sensors) is mounted form similar thermal contact with heat exchanger. Thermo-electric batteries are energized from self-contained power supply units whose voltage may be changed on signal received from control units. Control units receive signals from first individual temperature sensors and from common second temperature sensor. In case any "hot" commutating plate gets overheated, thermo-electric battery is disconnected by signal from second temperature sensor and is connected again as soon as temperature drops. Supply voltage is changed by signals of first temperature sensors.
EFFECT: increased term of storage of liquid component of rocket propellant at retained characteristics of engines.
SUBSTANCE: device can be used for local temperature influence onto reflex areas of human body. Thermo-electric semiconductor device has members incorporated into rubber canvas. The members have to be thermo-electric module, which has first seams to be in thermal contact with applicator having metal protrusions, and second seams are in contact with liquid heat exchanger. Power circuits of thermo-electric members and channels for supplying and removing fluid from heat exchangers are put inside rubber canvas. Applicator is made in form of metal plate. One flat surface of plate has saw-shaped protrusions, and the other surface is in thermal contact with first seams. Space between metal plate and fluid heat exchanger, which space doesn't contain thermo-electric module, is filled in with dielectric compound. Thermo-electric modules are connected to power circuits for supply of hetero-polar electric current to adjacent thermo-electric modules.
EFFECT: creation of temperature gradient of applicator according to random scheme.
2 cl, 3 dwg