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THERMAL DEVICES, DEVICES FOR HEATING AIR AND OTHER GAS-FUEL MEDIA AND THEIR APPLICATION
INVENTION
Patent of the Russian Federation RU2289760

DEVICE FOR COOLING AND HEATING AIR IN A CLOSED VOLUME

DEVICE FOR COOLING AND HEATING AIR IN A CLOSED VOLUME

The name of the inventor: Matveev Nikolai Vasilyevich (RU); Plis Oleg Ivanovich (RU); Strugov Alexander Mikhailovich
The name of the patentee: Miass Machine Building Plant
Address for correspondence: 456320 , Chelyabinsk Region, Miass, Turgoyakskoye Sh., 1, Miass Machine Building Plant
Date of commencement of the patent: 2005.04.18

The invention is intended for use in air conditioners, refrigerators, thermoelectric cooling and heating devices, thermostating systems. The object of the invention is to provide a simple, easy-to-maintain device for cooling and heating air in a closed space. The essence of the invention is that a device for cooling and heating air in a closed space contains a thermoelectric cooler and heat generator including thermoelectric batteries connected to a direct current source, a centrifugal fan opposite the inlets of which are placed the ribs of internal radiators based on which are placed Thermoelectric batteries, the opposite sides of which are in contact with the base of external radiators, blown by external fans.

DESCRIPTION OF THE INVENTION

The invention relates to thermoelectric cooling-heating devices, refrigerators, thermostating systems for articles enclosed in a closed space, and air conditioners.

Air conditioning devices are known in vehicles containing heat exchangers (water, evaporative, air) connected to thermoelectric batteries including a constant current source, thermoelectric heat and cold generators, closed circuits of the circulating coolant in the form of filter and ventilation systems, heat and liquid systems, and a number of other auxiliary Systems, for example, valves, pumps, etc., considered and analyzed as analogs and prototype by domestic patents and copyright certificates and foreign patents. Installation for air conditioning by A.S. The USSR No. 962038 operates in the radiation-convective mode. An increase in energy efficiency is achieved by mounting the temperature-sensitive element of the temperature sensor in contact with the hot junctions of the thermobattery and the control unit. Installation of air conditioning by А.С. The USSR №975464 allows efficiently with minimum costs of cooling and heating power due to the introduction of radiation heat exchange to provide thermal comfort in the cabin of the vehicle, while the radiation-convection panel is located under the filter panel, and in adjacent pipes air moves in opposite directions, which allows to equalize the thermal The field of the radiation surface of the panel and improve the conditions for heat removal from the surface of pipes and cold junctions of thermobattery.

To reduce heat fluxes between thermobatteries, the channel packs are insulated from each other by heat-insulating gaskets.

In A.S. USSR No. 1438972 the vehicle air-conditioning unit contains a thermoelectric cold and heat generator with a heat dissipation system from hot junctions of thermobatteries, including a convective heat exchanger and a radiation panel serving to increase the efficiency of the installation; The latter is made of separate movable elements, separately connected to the pump via solenoid valves.

All of the above listed devices and installations for air conditioning have a number of significant disadvantages, the main of which are: low energy efficiency; Large cold losses, resulting in an increase in the dimensions of cooling and heating devices; The lack of uniformity of the temperature field and the appearance on the radiation surface of supercooled or superheated areas, which worsen the operation of thermobatteries, which reduce their refrigerating coefficient; Failure of thermo-batteries due to overheating of their hot junctions in hot climate conditions or in production with elevated temperature regimes; Forced disconnection of thermobatter from the source of electricity, which leads to increased heat losses between their cold and hot junctions, and a number of others.

In high-power air-to-air and liquid-air cooling and cooling devices, the focus is on improving heat exchange systems, heat exchanger designs and methods for their production. Extruded heat exchangers of complex configuration are used (US Pat. No. 4,472,945); Needle or plate heat exchangers made from one single billet (US Pat. No. 4,278,749); Developed heat exchangers of a porous material, in which there are channels for transporting the condensed liquid, and the system isothermicity is achieved by using the evaporation and condensation of the substance filling the heat exchangers. Such systems can be used for a natural convective heat exchanger (US Pat. No. 4448028).

US Pat. No. 4,350016 describes a device and method for cooling by a thermoelectric element operating on a direct current in which heat transferred to the hot side is dissipated on the external heat exchanger by water being cooled, and by interaction with the external environment. Of the domestic and foreign analogues considered, the closest analogue chosen for the prototype of the invention is the device for cooling and heating of air in a closed volume, given in patent of the Russian Federation 2140365 C1, containing a thermoelectric air generator of cold and heat, including thermoelectric batteries connected to The source of direct current through the control panel, which allows changing the polarity of the voltage applied to the thermoelectric batteries, the filter-ventilation and heat-removing liquid system, the thermoelectric air generator is made in the form of two air and one liquid radiators, each air cooler connected to a corresponding liquid radiator by means of one cascade of thermoelectric batteries , With the hot side of thermoelectric batteries connected to the liquid radiator, and the cold side to the air cooler.

The disadvantage of such a device is the complexity of the design and maintenance of the liquid path.

The task, the solution of which is directed to the claimed invention, is the creation of a simple in design and easy-to-use device for cooling and heating the air in a closed volume. The technical result achieved in the implementation of the invention consists in simplifying the design, convenient maintenance of the devices and achieving high heat-energy characteristics.

In order to provide the technical result with the invention, the device for cooling and heating the air in a closed space contains a thermoelectric cooler and heat generator including thermoelectric batteries connected to a direct current source, a centrifugal fan is placed in a closed volume, in front of the inlet holes of which there are fins of internal radiators on The bases of which are thermoelectric batteries, opposite sides of which are in contact with the base of external radiators, blown by external fans. In addition, in the device described, the external radiators are provided with flanges and the gaskets seal the closed volume through the gaskets, the outlet of the centrifugal fan is connected to the duct located inside the closed volume, and the latter is in the form of a sealed container inside which the cooled or heated product is placed.

The above characteristics are significant, because they are in a causal relationship with the indicated result.

DEVICE FOR COOLING AND HEATING AIR IN A CLOSED VOLUME

The figure shows a closed volume 1, a thermoelectric generator of cold and heat, having thermoelectric batteries 2 connected to a direct current source.

In the closed volume, a centrifugal fan 3 is placed, opposite to its air inlet holes, there are ribs of internal radiators 4, on the flat base of which there are thermoelectric batteries, opposite sides of which contact the flat base of external radiators 5, which are blown by external fans 6. By means of flanges 7 external Radiators 5 and gaskets 8 the closed volume 1 is sealed.

For more even cooling (heating) of the closed volume, the outlet of the centrifugal fan is connected to the duct 9 located inside the closed volume and allowing the cooled (heated) air to be delivered to distant places of the closed volume.

And the figure shows the article 10 which is housed in a closed volume (sealed container) 1, which needs to be cooled, heated or maintained around it by a predetermined air temperature using a thermostating system.

OPERATING THE DEVICE AS THE FOLLOWING

- Cooling mode. When the DC voltage is applied to the thermoelectric batteries 2, the internal radiators 4 are cooled and the air sucked by the centrifugal fan 3 passes along the ribs of the inner radiator 4, while cooling, while flowing through the outlet of the centrifugal fan and the air duct 9 to the remote sections of the closed volume 1, and further This air is again drawn through the fins of the internal heat sink 4 by a centrifugal fan 3. The external radiators 5 are heated in the cooling mode and blown by the fans 6, thereby removing the heat generated by the heat sinks 5.

- Heating mode. The thermoelectric battery 2 is supplied with a DC voltage of a different polarity. The device operates similarly, only the air inside the closed volume is heated.

CLAIM

1. A device for cooling and heating air in a closed space, comprising a thermoelectric cooler and heat generator including thermoelectric batteries connected to a direct current source, characterized in that a centrifugal fan is placed in the closed volume opposite to the inlet openings of which there are ribs of internal radiators , On the basis of which thermoelectric batteries are installed, opposite sides of which are in contact with the base of external radiators blown by external fans.

2. The device according to claim 1, characterized in that the external radiators are provided with flanges and a closed volume is sealed through the gaskets.

3. The device according to claim 1, characterized in that the outlet of the centrifugal fan is connected to the duct, located inside the closed volume.

4. The device according to claim 1, characterized in that the closed volume is made in the form of a sealed container, inside which is placed a cooled or heated product.

print version
Date of publication 29.01.2007gg