CN2178457Y

CN2178457Y - Drying cabinet

Info

Publication number: CN2178457Y
Application number: CN 93235530
Authority: CN
Inventors: 张朝钦; 江任荣; 刘汉塘
Original assignee: National Sun Yat Sen University
Current assignee: Sun Yat Sen University; National Sun Yat Sen University
Priority date: 1993-12-20
Filing date: 1993-12-20
Publication date: 1994-10-05
Anticipated expiration: 2003-12-20

Abstract

The utility model relates to a drying cabinet, belonging to an article storage cabinet, in particular to an anti-humidity, anti-mildew and antimagnetic article storage cabinet. The drying cabinet adopts a thermoelectric refrigerating component to conduct partial refrigeration and dehumidification, a refrigerating end is arranged in an article storage chamber around which a circulating air duct and an ozone generator are arranged, a humidity sensor and an electronic circuit automatically control humidity inside the cabinet so as to reach the required proper humidity of the stored article. The drying cabinet can be used for storing articles which are easy to wet and mildew, such as magnetic recording materials, optical lenses, etc. The magnetic recording materials comprise computer disks, magnetic tapes for voice recorders and image recorders, etc. The utility model has favorable dehumidifying effect and convenient use.

Description

Drying cabinet

The utility model belongs to a kind of locker, particularly can protection against the tide, mildew-resistant, antimagnetic locker.Be used to deposit the article that magnetic recording materials such as computer disk, recorder and video recorder tape and the first-class moisture-sensitive of optical frames are gone mouldy.

Now the various magnetic pipe recording material overwhelming majority on the market do not possess antimildew function, run into weather relatively humidity or standing time longer, will make moist and go mouldy, destroy the information that is write down.Computer disk particularly, once going mouldy, the various important informations that write down will be subjected to heavy damage, cause immeasurable loss.In order to prevent to go mouldy, generally adopt drier to carry out moisture absorption, though can receive certain effect, moisture absorption is slow, and drier also will regularly be handled, and it is very inconvenient to use.

The purpose of this utility model is to develop a kind ofly can prevent the make moist drying of moldy metamorphism of deposit, can stop mould further to grow, and can keep being stored the needed suitable humidity of thing again.

This drying cupboard has material storage room, it is characterized in that the MCS formed by thermoelectric refrigerating semiconductor component, humidity sensor and electronic control circuit by one, the refrigeration end and the humidity sensor of the electric refrigerating assembly of wet difference place in the material storage room, have in the thermoelectric cooling module lower end one can with the rhone that is communicated with outside the cabinet, be responsible for the thawing water on the refrigeration end is discharged outside the material storage room.

In order to improve humidity control effect, can make the circulation air path of double-deck hollow around the material storage room, and circulating fan is set in circulation air path, the power switch of circulating fan is controlled by relay J.

At circulation air path, can also load onto ozone generator, intermittently produce ozone, kill the mould in the cabinet, to improve anti-mold effect.

Fig. 1 is the drying cupboard structure diagram.

Fig. 2 is the electronic control circuit schematic diagram.

Among Fig. 1,1 is material storage room, can be divided into multilayer according to the casing size; 2 is temperature difference electricity refrigerating assembly, can Be contained in the rear wall of material storage room, the refrigeration end places in the material storage room; 3 is circulation air path, can utilize the cabinet both sides to make double layer hollow, interior STH; 4 is circulating fan, is loaded on the air channel; 5 is rhone, has outside the logical cabinet of an aperture.

Among Fig. 2, form two limit hysteresis comparators by IC1, VR1 and VR2 are respectively the upper and lower bound (selecting VR1, VR2) of hysteresis comparator, the thresholding width △ VR=VR1-VR2 of hysteresis comparator. The signal of humidity sensor is imported by Vi, enters respectively end of oppisite phase and the in-phase end of IC1A and IC1B through resistance R 3, R4, and the in-phase end of IC1A meets VR1 through resistance R 1, and output meets power supply B+ through resistance R 5 on the one hand, connects on the other hand the R end of rest-set flip-flop; The end of oppisite phase of IC1B meets VR2 through resistance R 2, and output one tunnel meets power supply B+ through resistance R 6, and another road connects the S end of rest-set flip-flop; The Q of rest-set flip-flop holds the base stage that meets transistor Q1 through resistance R 7, and the colelctor electrode of Q1 connects power supply B+, grounded emitter through the solenoid of relay J; The power switch of thermoelectric cooling module, circulating fan, ozone generator is controlled by relay J. After drying cupboard is connected with the mains, as long as humidity exceeds the top limit of humidity that sets in the cabinet, the output level of humidity sensor is higher than the VR1(upper limit), make the Q end output high level of rest-set flip-flop by IC1A, control transistor Q1 conducting, make the relay J adhesive, thermoelectric cooling module work, by the refrigeration moisture absorption, until humidity is down to a certain lower limit, the temperature sensor output level merely is down to VR2, then the output of the Q of rest-set flip-flop end is converted to low level at once, transistor Q1 carries and ends, and relay J discharges, no longer refrigeration moisture absorption of drying cupboard. At this moment, the heat in refrigerator hot junction makes rapidly the ice-out that condenses in the refrigeration end surfaces, and the water of thawing remains unchanged the humidity in the cabinet outside offeing for sale side by side by the rhone collection substantially. When humidity in the cabinet is higher than on the humidity range of setting in limited time, refrigerator is started working again, so goes round and begins again, and makes that humidity remains in certain scope in the cabinet.

Owing to adopt the local refrigeration dehumidifying of semiconductor, high efficiency, effect on moisture extraction is good, and in the course of work, bulk temperature is outer low unlike cabinet in the cabinet, therefore can moisture absorption atmosphere during the thing such as taking-up disk in cabinet. When the metals such as cabinet employing iron are made, can play demagnetizing effect, use fool proof reliable, simple to operation.

Specific embodiment: the utility model internal volume can be made 60L, 80L, several specifications of 120L, circulating fan adopts 2KV direct current air exhauster, the cabinet door adopts the glue frame to seal, and the model of humidity sensor is SN-C-1, and IC1 adopts LM339, IC2 adopts MC14011, relay is selected specification for use: 6A/220V, and AC, transistor Q1 selects CS9013 for use, ozone generator can adopt general ozone generator, and thermoelectric cooling module is selected the TECI1270T85 thermoelectric cooling module for use.

Claims

1, a kind of drying cupboard, material storage room is arranged, it is characterized in that the MCS formed by thermoelectric refrigerating semiconductor component, humidity sensor and electronic control circuit by one, the cold junction of thermoelectric cooling module and humidity sensor place in the material storage room, have in the thermoelectric cooling module lower end one can with the rhone that is communicated with outside the cabinet.

2, a kind of drying cupboard as claimed in claim 1, it is characterized in that the electronic control circuit connection is: the signal of humidity sensor is imported by Vi, enter the end of oppisite phase of IC1A and IC1B respectively through resistance R 3, R4, and in-phase end, the in-phase end of IC1A meets VR1 through resistance R 1, output meets power supply B+ through resistance R 5 on the one hand, connects the R end of rest-set flip-flop on the other hand; The end of oppisite phase of IC1B meets VR2 through resistance R 2, and output one tunnel meets power supply B+ through resistance R 6, and another road connects the S end of rest-set flip-flop; The Q of rest-set flip-flop holds the base stage that meets transistor Q1 through resistance R 7, and the colelctor electrode of Q1 connects power supply B+, grounded emitter through the solenoid of relay J; The power switch of thermoelectric cooling module is controlled by relay J.

3, a kind of drying cupboard as claimed in claim 1 or 2 is characterized in that making the circulation air path of double-deck hollow around the material storage room, and circulating fan is set in circulation air path, and the power switch of circulating fan is controlled by relay J.