JPH0567320U - Gas dryer - Google Patents

Abstract

(57) [Summary] [Purpose] The Peltier effect element cools and heats the gas through the wall surface of the closed passage. A Peltier effect element 1, a heat absorber 4 joined to a heat absorbing surface 1a of the Peltier effect element 1, a heat radiator 9 joined to a heat radiating surface 1b of the Peltier effect element 1, and a gas supply source. An air supply pipe 10 having a nozzle 11 that passes through the heat absorbing body 4 and communicates with the inside of the heat radiating body 9 and discharges gas at the tip, and to the heat radiating body 9 for feeding the discharged gas to a gas customer. An exhaust pipe 15 provided and a drain pipe 12 which is branched from the air supply pipe 10 immediately after passing through the heat absorber 4 and which has a drain valve 13 at the tip thereof are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas drying device using a Peltier effect element.

[0002]

[Prior Art]

 Conventionally used refrigeration dryers require a refrigerator in order to obtain a low temperature with a refrigerant. The refrigerator, which includes a compressor, a condenser, and an evaporator, has a complicated structure, and there is a problem in that electric noise is generated due to vibration and noise and power consumption is increased. Therefore, a dryer using electronic freezing that utilizes the characteristics of the Peltier effect element has been proposed. The electronic refrigeration dryer is generally provided with a heat absorber on the heat absorbing surface of the Peltier effect element and a heat radiator on the heat radiating surface, and the air to be dehumidified is guided to the heat absorber to be cooled so that it is contained in the air. It is formed to condense the water vapor that is being generated and to eliminate it as water. By the way, in the electronic refrigeration drying apparatus, the dehumidifying capacity is determined by how effectively the heat absorbed on the heat absorbing surface side of the Peltier effect element is radiated on the heat radiating surface side.

FIG. 3 is a sectional view showing an outline of an example of a conventional electronic freeze-drying apparatus. A heat transfer plate d 1 extending in the vertical direction is provided inside a housing c having an intake port a in the lower part and an exhaust port b in the upper part, and the heat dissipation surface f of the Peltier effect element e is provided on the lower surface of the heat transfer plate d. , A heat-absorbing fin h is joined to the heat-absorbing surface g of the Peltier effect element e, the periphery of the Peltier effect element e is covered with a heat insulating material i, and a heat-radiating fin j is joined to the upper surface of the heat transfer plate d. An exhaust fan k is provided at the exhaust port b of the housing c. In addition, 1 is a drain port provided below the heat-absorbing fins h in order to remove water dripping from the heat-absorbing fins h 1.

When the exhaust fan k is driven, the air to be dehumidified flows into the housing c from the intake port a provided at the bottom of the housing c, and passes through the heat absorbing fins h and the heat radiating fins j. The air is cooled by touching the endothermic fins h cooled by the low temperature conducted from the endothermic surface g of the Peltier effect element e, and the water vapor contained in the air is condensed on the surface of the endothermic fins h. As a result of being removed from the inside, it is dehumidified. Further, the air that has been cooled and dehumidified by the heat absorption fins h is heated by contacting the heat dissipation fins j whose temperature is raised by the heat conducted from the heat dissipation surface f of the Peltier effect element e through the heat transfer plate d to become dry air. Is discharged from the discharge port b.

[0005]

[Problems to be solved by the device]

 However, in the above-described electronic refrigeration drying apparatus, since the heat transfer plate d connecting the heat dissipation surface f of the Peltier effect element e and the heat dissipation fin j is located outside the air flow path, the heat transfer plate d Even if an attempt is made to use the heat radiation to heat the air after cooling and dehumidifying, the heat radiation is not used so effectively, and further, the heat is directly radiated from the heat transfer plate d before reaching the heat radiating fin j, so that the heat radiating is conducted to the heat radiating fin j. The amount of heat generated is reduced, the efficiency of heating the air after cooling and dehumidifying by the heat radiating fins j is also reduced, and the heat radiating effect of the Peltier effect element e is eventually lost, and improvement in dehumidifying capacity cannot be expected. Further, the electronic refrigeration drying apparatus is configured for dehumidifying air in an open space, and there is a problem that an exhaust fan k for promoting the circulation of air is required in the housing c.

In view of the above-mentioned circumstances, the present invention is a gas drying apparatus capable of circulating a pressure gas (air or various gases) in a closed circulation passage and cooling / heating with a Peltier effect element through the wall surface of the closed passage. The purpose is to provide.

[0007]

[Means for Solving the Problems]

 A first invention is to provide a Peltier effect element, a heat absorber joined to a heat absorbing surface of the Peltier effect element, a heat radiator joined to a heat radiating surface of the Peltier effect element, and the heat absorber extending from a gas supply source. An air supply pipe having a nozzle that passes therethrough and discharges gas at the tip of the radiator, and an exhaust pipe provided in the radiator to supply the gas discharged inside the radiator to the outside of the radiator, A second aspect of the present invention provides a Peltier effect element and a heat absorbing surface joined to the heat absorbing surface of the Peltier effect element, the drain tube having a drain valve branching from the air supply tube immediately after passing through the heat absorber and having a drain valve at the tip. Body, a heat dissipation body joined to the heat dissipation surface of the Peltier effect element, and a gas supply destination after being extended from the gas supply source, passing through the heat absorption body, and then spirally adhered to the heat dissipation body. Ventilation pipe leading to the above, The Netsutai said branched from the vent pipe and the distal end portion of the immediately following passage has a configuration that includes a drain pipe having a Dorenba lube.

[0008]

[Action]

 Therefore, in the first device, the gas flowing in the air supply pipe is cooled in the heat absorber through the air supply pipe wall, and the water vapor contained in the gas is condensed on the inner surface of the air supply pipe and removed from the gas. As a result, it is dehumidified. Further, the gas cooled and dehumidified by the heat absorber is discharged into the radiator through the nozzle, heated by the radiator and becomes dry air, and is delivered to the gas demand destination through the exhaust pipe. The water vapor condensed on the inner surface of the air supply pipe flows out to the drain pipe and is discharged through the drain valve. In the second invention, the gas flowing in the ventilation pipe is cooled in the heat absorber through the ventilation pipe wall, and the water vapor contained in the gas is condensed on the inner surface of the ventilation pipe and removed from the gas, resulting in dehumidification. To be done. Further, the gas cooled and dehumidified by the heat absorbing body is guided to the heat radiating body by the ventilation pipe, heated by the heat radiating body and becomes dry air to be supplied to the gas demand destination. The water vapor condensed on the inner surface of the ventilation pipe flows out to the drain pipe and is discharged through the drain valve.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic cross-sectional view of a first embodiment of a gas drying apparatus of the present invention, in which a Peltier effect element 1 having a heat absorbing surface 1a on the front side and a heat radiating surface 1b on the back side is used as the heat absorbing surface. 1a is provided downward, the endothermic plate 2 is attached to the endothermic surface 1a of the Peltier effect element 1 so as to be in close contact with the endothermic surface 1a and to be fitted to a part of the outer periphery of the Peltier effect element 1, The heat absorbing body 4 is formed by the cylindrical heat absorbing cylinder 3 fixed to the lower surface side of the plate 2 and extending downward.

A heat radiating plate 5 joined to the heat radiating surface 1 b side of the Peltier effect element 1 so as to be in intimate contact with the heat radiating surface 1 b, and fixed to the upper surface of the heat radiating plate 5 and extending upward, a heat radiating foil is provided radially outward. A radiator 9 is formed by a cylindrical radiator 7 having a fin 6 and a cover plate 8 fixed to the upper end of the radiator 7 so as to seal the radiator 7.

An air supply pipe 10 extending from a gas supply source (not shown) is spirally closely wound from the base of the endothermic cylinder 3 on the outer circumference in the radial direction of the endothermic cylinder 3 toward the tip, 3 extends a little in the horizontal direction from the vicinity of the tip of the radiator 3, bends further upward, bends near the top of the radiator 9 and penetrates through the central portion of the cover plate 8 of the radiator 7, and is inserted into the radiator 7. An annular nozzle 11 is provided at the tip of the air supply pipe 10 so that the gas can be discharged toward the inner surface of the heat radiating cylinder 7.

A drain pipe 12 extending downward from the tip of the horizontally extending portion of the air supply pipe 10 is provided, and a drain valve 13 is provided at a predetermined position of the drain pipe 12.

Further, from immediately below the heat dissipation plate 5, the spiral heat supply pipe 10 surrounding the entire heat absorbing body 4, the outer periphery of the heat absorbing cylinder 3, and the air supply pipe 10 extending from the heat absorbing body 4 to the cover plate 8 of the heat dissipation body 9, Each drainage pipe 12 is covered with a heat insulating material 14.

An exhaust pipe 15 is provided at a predetermined position of the cover plate 8 of the radiator 9 in order to supply the gas discharged into the heat radiating cylinder 7 to a gas demander (not shown).

In operation, the gas supplied from a gas supply source (not shown) and flowing in the air supply pipe 10 is transferred from the heat absorbing surface 1 a of the Peltier effect element 1 to the heat absorbing plate 2 in the heat absorbing body 4. The low temperature conducted to the endothermic tube 3 causes the water vapor contained in the cooled gas to be cooled through the wall of the air supply tube 10 to condense on the inner surface of the air supply tube 10 and to be removed from the gas. Is dehumidified. Further, the gas that has been cooled and dehumidified by the heat absorbing body 4 is guided to the heat radiating body 9 by the air supply pipe 10 and is discharged into the heat radiating body 9 through the nozzle 11. The gas released into the radiator 9 is heated by the heat conducted from the heat releasing surface 1b of the Peltier effect element 1 to the heat radiating tube 7 via the heat radiating plate 5 to become dry air, and is shown by the exhaust pipe 15. It is sent to the customers who do not have gas. The heat conducted to the heat radiating cylinder 7 heats the gas discharged into the heat radiating cylinder 7, and at the same time, is radiated to the atmosphere through the heat radiating fins 6 provided on the outer circumference of the heat radiating cylinder 7. Further, the water vapor condensed on the inner surface of the air supply pipe 10 flows out to the drain pipe 12 and is discharged through the drain valve 13.

According to the above, since the heat absorbing body 4 is directly joined to the heat absorbing surface 1a of the Peltier effect element 1 and the heat radiating body 9 is directly joined to the heat radiating surface 1b, the low temperature conduction and heat radiation to the heat absorbing body 4 are performed. The heat is efficiently conducted to the body 9, and the gas cooled in the heat absorber 4 is ejected from the nozzle 11 into the heat radiating cylinder 7 of the heat radiating body 9. At the same time, the heat of the surroundings is efficiently taken to raise the temperature, and the heat radiator 9 efficiently releases the heat. Therefore, the heating operation by the heat radiator 9 for the gas cooled and dehumidified by the heat absorber 4 can be made highly efficient. It is possible to obtain an excellent gas drying action. Further, if the heat radiation fins 6 are provided on the outer circumference of the heat radiation tube 7 as shown in the figure, the heat radiation fins 6 promote the heat radiation of the heat radiator 9, so that the whole structure is further improved. To improve the dehumidifying effect. You can

FIG. 2 is a schematic cross-sectional view of a second embodiment of the gas drying device of the present invention. In the figure, the same parts as those in FIG. .. In this embodiment, a heat dissipation plate 16 joined to the heat dissipation surface 1b of the Peltier effect element 1 so as to be in close contact with the heat dissipation surface 1b, and a cylindrical heat dissipation tube 17 fixed to the upper surface of the heat dissipation plate 16 and extending upward. Thus, the heat radiator 18 is formed.

Then, the ventilation pipe 19 extended from a gas supply source (not shown) is spirally closely wound from the base of the endothermic cylinder 3 on the outer circumference in the radial direction of the endothermic cylinder 3 toward the tip, A little horizontal extension is provided from the vicinity of the tip of the heat absorbing tube 3, and is further bent upward and spirally adhered to the tip from the base of the heat radiating tube 17 on the radial outer periphery of the heat radiating tube 17 toward the tip. The heat radiating cylinder 17 extends from near the tip thereof to a gas demand destination (not shown).

Further, a fan 20 is provided near the upper end of the heat radiating cylinder 17 in order to promote convection of gas inside the heat radiating cylinder 17.

The configuration other than the above is the same as that of the first embodiment shown in FIG.

Next, the operation will be described. Gas supplied from a gas supply source (not shown) and flowing in the ventilation pipe 19 is absorbed in the heat absorber 4 from the heat absorption surface 1 a of the Peltier effect element 1 via the heat absorption plate 2. The low temperature conducted to the endothermic cylinder 3 cools through the wall of the ventilation pipe 19, and the water vapor contained in the cooled gas is condensed on the inner surface of the ventilation pipe 19 and is removed from the gas. Is dehumidified. Further, the gas cooled and dehumidified by the heat absorbing body 4 is transferred to the heat radiating cylinder 17 through the heat radiating plate 16 from the heat radiating surface 1b of the Peltier effect element 1 in the heat radiating body 18 guided by the ventilation pipe 19. It is heated by the to produce dry gas, which is sent to a gas demand destination (not shown). Further, by driving the fan 20 provided in the vicinity of the upper end of the heat radiating cylinder 17, the convection of the air inside the heat radiating cylinder 17 is promoted and the heat radiation from the heat radiating cylinder 17 is promoted. The water vapor condensed on the inner surface of the air pipe 19 flows out into the drain pipe 12 and is discharged through the drain valve 13.

According to the above, since the heat absorbing body 4 is directly joined to the heat absorbing surface 1a of the Peltier effect element 1 and the heat radiating body 18 is directly joined to the heat radiating surface 1b, the low temperature conduction to the heat absorbing body 4 is achieved. The heat is efficiently conducted to the radiator 18, and the gas cooled in the heat absorber 4 circulates around the outer periphery of the heat radiating cylinder 17 and absorbs the heat in a uniform manner from the outer periphery of the heat radiating cylinder 17. As a result, the temperature of the gas is raised and the heat is radiated from the heat radiator 18 efficiently, so that the heating effect of the heat radiator 18 on the gas cooled and dehumidified by the heat absorber 4 can be made highly efficient. The gas drying action can be excellent, and if a fan 20 is provided at the upper end of the heat radiating cylinder 17 as shown in the figure, the fan 20 helps the heat radiating of the heat radiating body 18, so that the dehumidifying effect is further improved as a whole. Can be it can.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0025]

[Effect of the device]

 According to the gas drying device of the present invention, the heat absorber is directly connected to the heat absorption surface of the Peltier effect element, and the heat radiator is directly connected to the heat dissipation surface. Heat transfer is performed efficiently, and a nozzle for releasing gas is provided at the tip of the air supply pipe, so that the heating effect of the radiator on the gas cooled and dehumidified by the heat absorber is extremely efficient. It is possible to achieve an extremely excellent gas drying effect, and it is possible to improve the dehumidifying effect as a whole as a whole.In addition, the ventilation pipe spirally wound inside the ventilation pipe The heating effect on the flowing cooling and dehumidified gas can be efficiently performed, and the gas drying effect can be excellent, and the dehumidifying effect can be improved, and various other excellent effects can be achieved.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a first embodiment of a gas drying device of the present invention.

FIG. 2 is a sectional view schematically showing a second embodiment of the gas drying device of the present invention.

FIG. 3 is a cross-sectional view schematically showing an example of a conventional electronic refrigeration drying apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Peltier effect element 1a Heat absorption surface 1b Heat dissipation surface 4 Heat absorption body 9 Heat dissipation body 10 Air supply pipe 11 Nozzle 12 Drain pipe 13 Drain pipe 15 Exhaust pipe 18 Radiator 19 Vent pipe

Claims (2)

[Scope of utility model registration request] 1. A Peltier effect element, a heat absorber bonded to a heat absorbing surface of the Peltier effect element, a heat radiator bonded to a heat radiating surface of the Peltier effect element, and a gas supply source extending through the heat absorber. An air supply pipe having a nozzle that communicates with the radiator and discharges gas at the tip, an exhaust pipe provided on the radiator to supply the gas discharged into the radiator to the outside of the radiator, and the heat absorption A gas drying device, comprising: a drain pipe branched from the air supply pipe immediately after passing through a body and having a drain valve at a tip end portion thereof. 2. A Peltier effect element, a heat absorber bonded to a heat absorbing surface of the Peltier effect element, a heat radiator bonded to a heat radiating surface of the Peltier effect element, and a gas supply source extending through the heat absorber. Then, a ventilation pipe that is spirally adhered to the radiator and is wound around it, and then leads to the gas destination, and a drain pipe that is branched from the ventilation pipe immediately after passing through the heat absorber and that has a drain valve at the tip. A gas drying device characterized by being provided.