SU861869A1 - Thermoelectric air dryer - Google Patents

Description

(54) THERMOELECTRIC AIR DRAINER

  ... one . . This invention relates to an air treatment technique. A thermoelectric air dryer is known, which contains series-connected thermoelectronic batteries with hot junctions adjacent to an external radio radiogram and cold - forming a channel. This is due to poor contact surface exchange with air. The purpose of the invention is to increase the efficiency of condensation of moisture from the air.,. This goal is achieved in that in the channel in alternate order along the air flow there are hubs of thermally conductive and thermally insulating material, and in the first of them cylindrical channels are made. FIG. 1 ° shows a longitudinal section of a thermoelectric dehumidifier of air, for example, for transformers; in FIG. 2 shows section A-A in FIG. 1 Thermoelectric device (the earside contains sequentially connected thermoelectric batteries with hot joints 2 adjacent to the external radiator 3 and cold joints 4, forming channel 5. Channel 5 in alternate order along the air flow are placed bushes. 6 7 and heat conductive and insulating material, and cylindrical channels are made in sleeves 6. 8. Moreover, the dryer has a holder 9 with inlet pipe Yu, breathing valve 11, bottom 12 with outlet pipe 13, drain valve 14, thermal insulation 15. sleeve 6 is manufactured They are made of a material with high thermal conductivity (for example, aluminum, copper), and a sleeve 7 is made of heat insulating material (for example, glass fiber, fluoroplastic). The latter are sealed together, for example, with an adhesive. For example, through an expansion tank of a transformer or a reactor, they have a developed internal surface made in the form of cylindrical channels 8. The diameter of these channels determines, with the capillary forces of condensation and moisture, and is mm and olee depending on the diameter and ki vtulit The amounts channels.

On the outer surface of the sleeves b, there are cold junctions 4 batteries 1, which have the traditional constructive solution, connected in a series electric circuit.

Battery 1 is mated to plug b and radiator 3 through a heat contact electrically insulating junction.

The transition is performed either from metallized ceramics with subsequent soldering to sleeves b and radiator 3, or in the form of a glued construction to them. In the case of bushings and radiators, there is an additional electrically insulated anodized coating & The dehumidifier has a spaced-apart design of thermoelectric batteries 1 /, as a result of which each battery contacts the corresponding portion of the sleeve 6, which ensures highly efficient operation.

During the drying process, the air is cooled to 35-45, according to which a similar temperature drop is created between the upper and lower sleeves b along the air. The presence of separate sleeves b, thermally insulated from one another through sleeves 7, in combination with separated thermoelectric batteries, provides a sufficiently high level of cooling and moisture condensation from air. Heat from hot junctions when operating in cooling mode is provided by an external radiator. A thermoelectric air dryer is attached to the expansion tank of a transformer or reactor through pipes 10 and 13,

On the lid 9 there is a breather valve 11, made in the form of an oil seal or membrane type, in the bottom 12 there is a drainage valve 14 of the float type. Thermal insulation 15 installed along the perimeter of the channel 5 is designed to reduce thermal exposure

hot outdoor radiator 3.

Powered desiccant as follows.

When switched on with a control system (system not shown), batteries 1 are switched to cooling mode. When this happens, the sleeves b and, accordingly, the air in their channels B are cooled. The cooled air goes down. Due to the difference in specific gravity between the air in the dryer and in the expansion tank of the transformer, the latter is constantly circulated. When air flows through the sleeves 6, it cools down, and the moisture condenses as otherwise in the internal channels 8. In accordance with the work program, the etching system switches the dryer to the heating mode. The frost melts, the moisture of the channels 8 sleeves, b gets into the clap-pan 14 and flows out.

After the moisture has been removed, the cycle is repeated.

This implementation of the dehumidifier allowed to increase the efficiency of condensation of moisture from the air.

Claims (1)

Formula invented A thermoelectric air dryer containing series-connected thermoelectric batteries with hot slots adjacent to  a naruauamu radiator and cold channel ducts, characterized in that, in order to increase the efficiency of condensation of moisture from the air, in the duct alternately 0 time along the air course are placed bushings of heat-conducting and heat-insulating material, and in the first of them cylindrical channels are made. with sources of information, taken into account in the examination 1, Zubarev D.L. Ventilation and air conditioning on atomic ships. -L., Shipbuilding, 1968, p. 319-329.