Thermoelectric module

FIELD: heating.

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.

4 dwg

 

The invention relates to the field of thermoelectricity and can be used in thermoelectric cooling devices and (or) thermoelectric generators.

Known thermoelectric module comprising thermoelectric elements p-type thermoelectric elements n-type, which are alternately and electrically connected to electrodes provided on the upper and lower sides of each of thermoelectric element, and each thermoelectric element has a covering film of insulating material of polyimide or poly (substituted or unsubstituted p-xylene) on its sides, with the exception of the parties connected with the electrodes (see patent RU 2178281). This film increases the strength and resistance of thermoelectric elements, protects thermoelectric elements from corrosion in the atmosphere of high humidity.

To combat corrosion in thermoelectric elements and avoid accumulation in the gaps between thermoelectric elements condensed moisture, the evaporation of which the hot junction and the condensation on a cold junction reduces the efficiency of a thermoelectric module, many manufacturers of thermoelectric modules are sealed silicone, epoxy and polyurethane sealants. However, the sealing causes red eye reduction is the temperature difference of about 2-3°C due To thermal conductivity of the sealant, greater than thermal conductivity of air (Kryotherm company, the statement but the installation, p.6).

The closest in technical essence and the achieved result is a thermoelectric module, known from the patent RU 2364803 C2 20.08.2009, where MDM provides double sealing. It offers a thermoelectric module, which contains placed between two heat exchanger plates of hot and cold junctions and connected in series in the electrical circuit parallel rows of thermocouples, each of which is formed by two branches of the semiconductor p - type and n-type conductivity. The end faces of the branches of the p - type and n-type thermoelements are connected with the formation of p-n junctions of the switching tires mounted on the inner surfaces of the heat transfer plates of hot and cold junctions. All external lateral surface of the peripheral branches of the peripheral rows of elements covered by a single continuous closed protective coating of silicone sealant, the outer surface of which is flush with the side surfaces of the heat transfer plates. On the lateral surface of each of thermoelectric elements, and open the inner surface of the switching buses applied sealing the protective coating in the form of a film of epoxy-urethane varnish. The ends of the branches of the p - type and n-type is connected to the mutation tires.

By applying the above surface elements of thermoelectric module specified protective coatings provides double sealing thermoelectric module, increasing the resource module, which increases its reliability and mechanical strength.

The disadvantage of thermoelectric module with double sealing is to reduce the temperature difference between the heat transfer plates of hot and cold junctions due to the presence in the volume of sealing sealant covering a single continuous closed protective coating the outer surface of the peripheral branches of the peripheral rows of thermocouples thermoelectric module, which is located flush with the side surfaces of the heat transfer plates, and thermal conductivity than thermal conductivity of the air in 5...7 times. The presence of lateral surfaces of each of the branches of thermoelements and the inner surfaces of the switching tires and the heat transfer plates coating of epoxy-urethane varnish, the conductivity of which is also greater than thermal conductivity of air is more than 10 times, leads to a further reduction in the temperature difference between the heat transfer plates of hot and cold junctions. Seal or double seal not exclude the presence of air in the process volume between the inner and them surfaces of the heat transfer plates of hot and cold junctions, open the inner surfaces of the switching buses and side surfaces of each of thermoelectric elements. In the presence of air in the specified volume simultaneously with thermoelectric phenomena in module processes of heat transfer through radiation, conduction and convection of air in a confined space.

The technical result of the invention is to increase the maximum temperature difference between the hot and cold junctions and an increase in the maximum cooling capacity of the module.

This technical result is achieved due to the fact that in thermoelectric module containing placed between the heat exchange plates of hot and cold junctions and connected in series in the electrical circuit parallel rows of thermocouples, each of which is formed by two branches of the semiconductor n - and p - type conductivity, the end faces of the branches of the n - and p-type thermoelements are connected with the formation of n-p junctions of the switching tires mounted on the inner surfaces of the heat transfer plates of hot and cold junctions, in contrast to known space enclosed between the inner surfaces of heat exchanger plates, filled water resistant, inert to the materials of the elements thermoelectric module heat-shielding coating conductivity R of the main and less than 0.001 W/m·K to volume V, where Vminlimited external surfaces of the peripheral branches of the peripheral rows of thermoelectric elements of thermoelectric module and the end surfaces of the heat transfer plates, a Vmaxlimited internal surfaces of the heat transfer plates of hot and cold junctions, switching tires and end surfaces of the heat transfer plates.

The increase of the maximum temperature difference between the hot and cold junctions and an increase in the maximum cooling capacity of the module is achieved due to the fact that in thermoelectric module is entirely excluded from the process of heat transfer between hot and cold surfaces of the heat transfer plates through the air and eliminates the influence of thermal conductivity of the sealant compositions previously used.

The invention is illustrated by drawings, where:

1 shows a top view of a sealed outside the module without the upper heat transfer plate;

figure 2 is a view of a module in terms of fill-in Vmin;

figure 3 shows a top view of a fully encapsulated module without the upper heat transfer plate,

figure 4 shows the module type in terms of fill-in Vmax.

The proposed thermoelectric module contains elements formed by branches of the semiconductor 1 of n-type conductivity and unnatural semiconductors is and 2 of p-type conductivity, switching tires 3 fixed to the inner surfaces of the heat transfer plates 4 and forming the n-p junctions, connected in serial electrical circuit terminating electrical conductors 5 and 6, designed for the connection of thermoelectric module with the DC voltage source. Water resistant, inert to the materials of the elements of thermoelectric module heat-insulating cover 7 with a thermal conductivity of equal to and less than 0.001 W/m·K filled in the space enclosed between the inner and end surfaces of heat exchanger plates to volume V, where Vminmatches (is equal to) the amount of injected between the inner and end surfaces of the heat transfer plates and the outer surfaces of the peripheral branches of the peripheral rows of thermocouples 1 and 2 of thermoelectric module, and Vmaxmatches (is equal to) the amount of injected between the inner and end surfaces of the heat transfer plates 4 hot and cold junctions, switching tires 3 and the end surfaces of the heat transfer plates 4.

Thermoelectric module operates as follows. Connect the conductors 5 and 6 to the DC voltage source. Through the electrical circuit formed of series-connected semiconductor branches 1 and 2 thermocouples, flows that is and as a result of the Peltier effect one heat exchanger plate is cooled, and the other is heated, depending on the direction of the current in the electric circuit, thus completely eliminates the influence of air on the heat exchange between hot and cold plates and the effect of heat sealing materials.

For the implementation of the proposed technical solutions can be used, for example, thermoelectric modules RM-127-14-11-72-L company LLC "Crystal".

To exclude the influence of heat leakage on the materials of the solder junctions, coatings, semiconductors, materials switching buses, the material of the plates of hot and cold junctions in heat the coating should be inert with respect to these materials. As thermal barrier coatings that meet the specified requirements, along with moisture, can be used liquid heat insulation Alfatec firm "Facade Thermoprotect or liquid ceramic insulation coating Astratec THE 5768-002-02068060-2005 LLC Termocom".

Tests conducted on the specified module when filling the free volume between the hot and cold plates liquid ceramic insulation coating, AstraTech in the absence of heat load, in addition to the ambient air temperature is 19.1°C, the cooling of the hot junction heat sink with fan, showed a temperature difference between the hot and cold plates 40°C at p is Tania's story module current 2,99 And at a voltage of 7.4 Century The same module, sealed with epoxy composition at LLC "Crystal", fed by current 2,99 And voltage In EUR 7.57 for the same heat load and uniform cooling of the hot junction, showed a temperature difference of 30°C. the Results show that when testing in a vacuum chamber without the heat load and the hot side temperature is 27°C, normalized parameter ΔT will be much more.

The proposed thermoelectric module has a significantly higher cooling capacity with less power consumption, is easy to manufacture and more reliable in operation.

Thermoelectric module comprising placed between the heat exchange plates of hot and cold junctions and connected in series in the electrical circuit parallel rows of thermocouples, each of which is formed by two branches of the semiconductor n - and p-type conductivity, the end faces of the branches of the n - and p-type thermoelements are connected with the formation of n-p transitions switching tires mounted on the inner surfaces of the heat transfer plates of hot and cold junctions, characterized in that the space enclosed between the inner surfaces of heat exchanger plates, filled water resistant, inert to the materials of the elements of thermoelectric module teplotami the th floor with conductivity, equal to and less than 0.001 W/m·K, to volume V, where Vminlimited external surfaces of the peripheral branches of the peripheral rows of thermoelectric elements of thermoelectric module and the end surfaces of the heat transfer plates, a Vmaxlimited internal surfaces of the heat transfer plates of hot and cold junctions, switching tires and end surfaces of the heat transfer plates.



 

Same patents:

FIELD: heating.

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.

FIELD: medicine.

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.

1 dwg

FIELD: medicine.

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

FIELD: medicine.

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: medicine.

SUBSTANCE: invention relates to medical equipment ad is intended for local temperature and magnetic impact on reflex zones of human lower extremities and can also be used for therapeutic massage. Device contains rubber strap in form of lower part of human leg, provided in its upper part with string for tightening and socket for connecting vacuum cleaner hose, which includes massage elements, consisting of thermoelectric module, massage applicators and air aluminium radiator. In rubber strap circuits of thermoelectric module supply are located. Source of magnetic field for magnetic impact is located between massage applicator and thermoelectric module, massage elements, contacting lower surface of foot being made in form of flat plate, containing rod from highly heat-conducting material, which has relief surface, formed by projections of rounded shape with different radii of curvature and sizes of projections. Rod is fixed on plate with possibility of its free rotation around its axis.

EFFECT: application of invention makes it possible to extend arsenal of means of local temperature and magnetic impact on reflex zones.

3 dwg

Test heat-chamber // 2457470

FIELD: machine building.

SUBSTANCE: heat-chamber comprises electronic control unit including power supply, parameter setting unit, indication unit, controller, and isothermal case with battery of thermoelectric modules. Electronic control unit is made up of side-mounted structure and comprises extra unit of setting temperature variation rate and channel of communication with test bench control computer. Isothermal unit is made up of detachable assembly including thermoelectric unit with thermostatically controlled chamber and base with through hole to accommodate sealed union with turntable secured thereon and fitted on test bench drive motor shaft. Said union consists of three sleeved axially fitted one onto the other.

EFFECT: reduced heat losses, higher accuracy and expanded performances.

2 dwg

FIELD: power engineering.

SUBSTANCE: device comprises a vessel radiator with a cooling object fixed in it, a heat conducting element with contact surfaces, an adjacent thermoelectric battery, cold and hot solders of which are parallel to each other and are thermally connected with the inner surface of the vessel radiator wall and the wall of the cooling object. The contact surfaces of the heat conducting element are made with an inclination relative to each other, and the inner surface of the vessel radiator wall is made with an inclination relative to the cooling object wall and is provided with a collar and limiting planks, at the same time the angle of inclination of the inner surface of the vessel radiator wall to the cooling object wall is equal to the angle of inclination of contact surfaces of the heat conducting element. The thermoelectric battery is installed on the inner surface of the vessel radiator between limiting planks with a support against the collar, and the heat conducting element is installed as capable of displacement for pressing of its contact surfaces to the wall of the cooling object and cold solders of the thermal battery and is equipped with a displacement device.

EFFECT: expansion of functional capabilities and improved manufacturability of a thermoelectric cooling device.

3 dwg

Aircraft cooler // 2448022

FIELD: transport.

SUBSTANCE: invention relates to airliner air conditioning systems. Proposed cooler 20 comprises heat exchanger 26 to carry liquid coolant for pre-cooling of refrigerator chamber 34 of cooler 20 to temperature of said coolant. Heat exchanger 26 is communicated with thermo electrical cooling element 28 in contact with said chamber 34 to cool the latter to temperature lower than that of aforesaid liquid coolant. Heat exchanger 26 and thermo electrical cooling element 28 are arranged inside refrigerator chamber 34. Heat exchanger 26 may be communicated with aircraft liquid coolant feed system.

EFFECT: decreased occupied volume, ease of installation.

10 cl, 3 dwg

FIELD: personal use articles.

SUBSTANCE: quick freezer comprises a refrigerating unit with a closed hydraulic manifold, which is connected to the pump via parallel heat exchangers connected to this manifold that contact with one surface of thermoelectric modules, the second surface of which contacts with the heat conducting plates. The heat conducting plates in their turn contact with a cooled bag placed between them. Thermoelectric modules are equipped with their own supply unit, and on the heat conducting plates there are temperature sensors installed, which are connected to the system of control and monitoring, which is connected to a current polarity switch connected to the supply unit of thermoelectric modules. The supply unit, the system of control and monitoring are insulated from heat conducting plates with bags placed between them by a heat insulating wall, through which supply and monitoring cables of thermoelectric modules are pulled. For each bag there are devices introduced to mix the polymer bag content to the moment of biological medical substance freezing, and sources of thermoelectric modules supply are connected to the device of supply source modes control connected to a device introduced into every thermoelectric module to determine the difference between temperatures of hot and cold soldered joints, which is connected to an autonomous supply unit.

EFFECT: higher speed of products and solutions freezing, provision of optimal modes of thermoelectric modules operation at various stages of freezing of the polymer bags content.

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.

1 dwg

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.

3 dwg

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.

1 dwg

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.

1 dwg

FIELD: medicine.

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

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