CN2149774Y

CN2149774Y - Automatic heating electronic foodstuff fresh-reservation case

Info

Publication number: CN2149774Y
Application number: CN 92239793
Authority: CN
Inventors: 李全生
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-16
Filing date: 1992-11-16
Publication date: 1993-12-22
Anticipated expiration: 2002-11-16

Abstract

The utility model discloses an automatic heating electronic foodstuff fresh-reservation case, comprising a heat insulating case body which is sealed, an electrothermal part, an oxygen anion generating device and a control device. The utility model is characterized in that the wall of the box body adopts the structure of a layer of insulation material between two plates; the electrothermal part has the function of automatic heating when the temperature is lower than 0 DEG C; the oxygen anion generating device is arranged on the top of the case. The utility model which is a domestic fresh-keeping device and particularly suitable for the long-period fresh-keeping storage of fruits and vegetables in winter in cold areas has the advantages of low cost and low storage cost.

Description

Automatic heating electronic foodstuff fresh-reservation case

The utility model is a kind of food freshness-keeping box, especially also relates to and can heat automatically, and electronic sterilizing food storage device belongs to daily class.

Food fresh keeping generally is divided into two classes, and a kind of similar electric refrigerator is by refrigeration the temperature inside the box to be remained on below the limiting temperature, and this is applicable to that ambient temperature is higher than the situation of preservation temperature.Another kind is with heating mode the temperature inside the box to be remained on a certain specified temp, this is applicable to that generally ambient temperature is lower than the situation of preservation temperature, lower such as the northern China winter temperature, vegetables and fruit mainly are antifreeze, to reach fresh-keeping, require preservation thing amount big, fresh-keeping cost is low, the preservation device cost should be low, is easy to move.Can satisfy above-mentioned requirements at present, not see as yet for the above-mentioned commodity that the resident uses.

It is means with antifreeze that the utility model purpose is to disclose a kind of, has the antistaling box of negative oxygen ion sterilization.

Below be technical essential of the present invention:

A fresh-keeping casing of leak free as far as possible at first should be arranged, also have an electric-heating assembly of in limiting temperature, heating automatically, the generating means that the finite concentration negative oxygen ion can intermittently take place.It is characterized in that box body wall and chamber door accompany warm material by two-ply and centre and constitute.Peripheral guard strip between the wallboard ectonexine is to be connected by non-Heat Conduction Material.Exterior panel still can be selected high-intensity metal or non-metallic material for use like this, to reduce constitution body cost.Electric-heating assembly comprises a heater element and one group of temperature control circuit.The row of tiles on a roof vulcanized fiber board that lays heating wire (mould) is fixed in lower shoe in the casing, and has insulation to isolate between box plate, and there is a metal division board that has a plurality of through holes at its place of keeping at a certain distance away, top.When the temperature inside the box will constitute freeze injury to fresh-keeping thing, this antistaling box is energized automatically, to heating in the case, cuts off the electricity supply automatically again to preference temperature.Negative oxygen ion generator comprises one group of plane-shaped electrode plate and one group of control circuit.Control circuit is automatic time control high-frequency oscillating circuits, quantitatively launches the finite concentration negative oxygen ion in required time at interval.It is characterized in that positive plate has the Copper Foil epoxy plate of garden through hole such as uniform, negative potential is welding a plurality of tip-like metal bump with corresponding position, positive electrode plate through hole center, and its pinnacle and positive plate distance are 4-6mm.Battery lead plate is set in parallel in and goes up place, roof below in the casing.

The utility model application of advanced Eltec adopts the negative oxygen ion sterilization, temperature automatically controlled heating, and body structure is simple, and is rationally distributed.Have fresh keeping time long (more than half a year), expense is hanged down advantage.

Accompanying drawing one is the utility model structural representation;

Accompanying drawing two is the heater element assembly drowing;

Accompanying drawing three is the temperature automatically controlled scheme circuit of embodiment

Accompanying drawing four is an embodiment time control negative oxygen ion generator scheme circuit;

Accompanying drawings the utility model embodiment.

A leak free casing is to accompany heat-insulation layer 2 by shell 1 and inner casing 12 centres, and the peripheral guard strip that shell 1 and inner casing are 12 is a kind of non-Heat Conduction Material.The battery lead plate 3 of negative oxygen ion generator is fixed in casing top cover below, be arranged in parallel.Negative oxygen ion generator control capsule 11 is equipped with accompanying drawing four whole circuit components, wherein telegraph key K ₂Be the time control part, adopt time base circuit 555 chips to form timing circuit.The right side is a negative oxygen ion generation circuit, form ultrasonic oscillator by BG1 and BG2, can produce the 30KHZ high-frequency signal, through the voltage transformer lotus root close with the D3 rectification after, produce ten thousand volts of above voltages at metal electrode board 3, make air ionization, the ozone of generation and negative ions are diffused into the space of store food, play the sterilization fresh effect.Battery lead plate is two tabular Copper Foil epoxy plates, 60 φ 10 through holes of positive plate rectangular distribution, with positive plate through hole corresponding position 60 metal needles are housed on the minus plate, needle point outer lug 20mm height, most advanced and sophisticated is 5mm apart from the positive plate spacing, closing chamber door is energized, switched on 12 hours, automatically time-controlled system starts, and works six hours at interval two hours at every turn.In the intensification control capsule 13, CW/78L05,7812 form constant voltage power suspply, and LM311 is a comparison amplifier, and when the temperature inside the box was lower than 0 ℃, thermally dependent resistor RT sensing made triac control energized make heating wire R heating.Metal barrier 5 is divided into several interlayers with tank-volumes.Chamber door and casing are made magnetic seal with magnetic seal adhesive tape 6.The row of tiles on a roof vulcanized fiber board 8 that is covered with heating wire is arranged on lower shoe 10 in the case, and the two has insulating interlayer 9.Place separated by a distance is provided with the metal partion (metp) 7 of leaving a plurality of through holes above row of tiles on a roof vulcanized fiber board 8.The utility model compact in design, the circuit part technology maturation, reliable operation below 0 ℃ in the cold climate, can be preserved vegetables and fruit in the winter time for a long time in a large number.Be commonly called as modern clamp by people.

Claims

1, a kind of electronic food preserving case of heating automatically has a leak free insulation casing as far as possible, and the electric-heating assembly that can heat automatically at the regulation lower limit temperature can intermittently be launched a certain amount of negative oxygen ion generating device, it is characterized in that for one:

A, box body wall are that two-ply accompanies the warm material structure, and the peripheral guard strip between the wallboard ectonexine is connected by non-Heat Conduction Material;

B, described electric-heating assembly are made up of heater element and one group of temperature control circuit, the row of tiles on a roof vulcanized fiber board that is laid with heating wire is fixed on the casing tank top plate, and have heat-insulation layer to isolate between box plate, there is the metal division board that has a plurality of through holes at its place of keeping at a certain distance away, top;

C, described negative oxygen ion generator comprise one group of plane-shaped electrode plate and one group of control circuit, positive plate is the Copper Foil epoxy plate of garden through hole such as uniform, negative electrode plate is welding a plurality of tip-like metal bump with corresponding position, positive electrode plate through hole center, pinnacle and positive plate distance are 4-6mm, and battery lead plate is arranged on and goes up place, roof below in the casing.