CN2095160U - Domestic vacuum fresh keeping machine - Google Patents

Abstract

The utility model relates to a domestic vacuum fresh keeping apparatus which is used for overcoming the insufficiencies of high cost, low quality of manual heat seal sealing, etc. of the existing homogeneous apparatus. The apparatus adopts an electrical machine, blades and an air sucking tube to be as a vacuum air sucking part. A heating cord of a heat seal part is controlled by a thyristor with timing conduction. The length of a trigger signal of a triggering circuit of the thyristor is controlled by an adjustable integrating circuit. Thus, heat pressing time is automatically controlled, which eliminates the phenomenon that a sealed opening can not be sealed or the sealed opening is burnt through because of the inaccurate time of manual control, and meanwhile, a press type switch is used for controlling the working condition. The utility model is convenient to operate. The apparatus has the advantages of portability and low cost and is suitable to be used in families.

Description

Domestic vacuum fresh keeping machine

The utility model be a kind ofly have bag, vacuumize, the device of function such as hot-press sealed, it is the packing container that is used for family's fresh-keeping foodstuff, preserves medicine, film, fabric etc.

For fresh-keeping foodstuff and preservation film, medicine etc., people often adopt the method for vacuum flexible packaging made from plastic, and this method is used for suitability for industrialized production in the past more, along with the demand of modernized family life, some family expenses antistaling vacuum containers have appearred now, there is the following weak point in various degree in these devices: the cost that has is higher, have owing to adopt manual control to seal, be not that plastics sack envelope is incessantly very little for heat, be exactly that the too many plastics sack of heat burns, the exhaust capacity that has a little less than.

The utility model aims to provide a kind of simple in structure, and cost is low, exhaust capacity is strong, the family expenses vacuum seal fresh-keeping device of adjustable fixed-time control hot-press sealed time of energy.

For achieving the above object, the utility model adopts following structure: it is by the part of bleeding, the hot-press sealed part, and control circuit three parts are formed.See Fig. 1, Fig. 2, the concrete structure of the part of bleeding is to fix a motor M in box body 9 bottoms, and blade 15 is housed on the motor shaft, and the blade dead ahead is facing to an opening of extraction pipe 16, and extraction pipe other end bleeding point 13 is fixed on box body panel 12 tops.

The heating wire R of hot-press sealed part ₀Be fixed on the panel in 12 1 side channels, its top is coated with high temperature insulation bar 11, and bleeding point 13 is positioned at heating wire one side, and opposite side is equipped with the hot pressing top cover 5 that is hinged with box body 9 on the box body panel, and top cover is when it closes and heating wire R ₀On the position that overlaps the encapsulation pressure pad 1 that heat proof material is made is housed.

The control circuit part is composed as follows, sees Fig. 3, heating wire R ₀SCR connects with triac, by the type pressure-actuating K switch ₁Control forms the loop with source of AC, and motor M is by series connected type pressure-actuating K switch ₂, rectifier diode D ₁With aforesaid K ₁Form the loop with source of AC, the trigger circuit of the silicon symmetrical switch SCR control utmost point pass through K switch ₂, rectifier diode D ₁, K switch ₁Form the loop with source of AC, the function of these trigger circuit is to work as K ₁, K ₂When making itself and power connection, promptly send an adjustable timing pip, K to the triac control utmost point ₁Be open circuited under the natural mode, K ₂Connection motor branch road under the natural mode is depressed the back and is connected trigger circuit, control K ₁, K ₂Button 4 be contained on the panel 12.

Its working process and principle are: after the energized, and K ₁Be off-state, entire circuit is not worked, and the flexible plastic sack is placed on the high temperature insulation bar 11 on the panel 12, and make it be inserted in bleeding point 13, and the hot pressing top cover 5 that closes is gently pressed button 4, the type pressure-actuating K switch ₁Connect, at this moment heating wire R ₀Branch road is not worked because of triac turn-offs, electric motor loop connection work, and the blade rotation produces negative pressure with air extraction in the plastic bag, and make pressing switch K again with heat seal top cover 5 downward weight buttons 4 this moment ₂Connect K _2-2End disconnects motor circuit, connects trigger circuit, and trigger circuit send a timer-operated trigging pulse, triac conducting, heating wire R ₀Work with the plastic bag heat sealing, is adjusted the time of energizing signal, can adjust the heat seal work-hours.

The utility model replaces the higher vacuum pump of price with motor simple in structure and blade, thereby reduced cost, its vacuum capability is also stronger, can reach more than the 0.2L/S, adopt triac control hot-press sealed simultaneously, only need to adjust the time of energizing signal, can the automatic guidance hot pressing time, forbidden the phenomenon that causes envelope not shut up or burn thereby eliminate the manual period, because that this installs light cost is low, so very suitable family uses.

The drawing explanation:

Fig. 1: the utility model embodiment schematic appearance.

Fig. 2: the utility model embodiment longitudinal profile scheme drawing.

Fig. 3: the utility model control circuit schematic diagram.

Fig. 4: the utility model control circuit embodiment circuit diagram.

Describe embodiment in detail below in conjunction with accompanying drawing:

See Fig. 1, the encapsulation pressure pad 1 heat enduring rubber material in the present embodiment for easy to use, also has plastic bag groove 7 on panel 12, in put plastics reel 3, intend the plastic material that processing is used in order to deposit.

See Fig. 3, the control circuit concrete structure is as follows, and power supply adopts voltage transformer B(to see Fig. 4) generation 19V alternating-current voltage/AC voltage, a secondary end ground connection, a termination type pressure-actuating K switch ₁, K ₁Other end K _1-1Termination heating wire R ₀With the branch road of triac SCR polyphone, branch road other end ground connection, K _1-1End meets rectifier diode D simultaneously ₁Negative pole, D ₁Positive pole connects the type pressure-actuating K switch ₂End, K ₂In addition two dead end K _2-1And K _2-2Connect motor M branch road and trigger circuit branch road respectively, K under the state of nature _1-1Disconnect K ₂With K _2-1Connect K ₂With K _2-2Disconnect.

As shown in Figure 4, trigger circuit are by discharging and recharging control aerotron T ₁, C ₄R ₅Integrating circuit triggers control aerotron T ₂With trigger triode T ₃Form T ₁Collecting electrode meets R ₄With charging isolation diode D ₂Negative pole, R ₄Another termination transformer secondary output power end, D ₂Positive pole meets the C in the integrating circuit ₄, R ₅An end that joins, R ₅The other end and divider resistance R ₆And T ₂Base stage is joined, T ₂Collecting electrode meets T ₃Ground level, T ₃Collecting electrode meets the SCR control utmost point, T ₁Base stage, T ₂, T ₃Collecting electrode is respectively by biasing resistance R ₂, load resistor R ₇, R ₈With K _2-2End joins, wherein integrating resistor R ₅Be adjustable resistance, can adjust by panel-mounted knob 10.

With K ₁The transformer secondary output power end and the electric thread R that link to each other ₀An end that links to each other with a controllable silicon SCR indicator lamp LED in parallel and current-limiting resistance R ₁Series connected branch road, indicator lamp LED is contained on the panel 12.

This control circuit embodiment principle of work and process are as follows:

Under the normality, K ₁, K _1-1Disconnect K ₂, K _2-1Connect, after the energized, electric current is through indicator lamp LED, heating wire R ₀, rectifier diode D ₁, motor M forms the loop, and this moment, electric current was very little, R ₀All do not work with motor M, but indicator lamp LED is bright, expression on power supply is gently depressed button 4, K with hot pressing top cover 5 ₁With K _1-1Connect K ₂, K _2-1Continue to connect, the motor M branch road is connected, and with air extraction in the plastic bag, reusable heat bears down on one when covering 4 to second grades of weight buttons, K ₁, K _1-1Also connect K ₂, K _2-1Disconnect K ₂, K _2-2Connect, the motor stall, trigger circuit are connected.This moment T ₃Be off-state, power supply passes through R ₈To negative voltage of the triac control utmost point, silicon control conducting, heating wire R ₀Work, indicator lamp is bright, represents heating to seal, meanwhile, and after the energized, trigger circuit T ₁Conducting is because the capacitor C in the integrating circuit before this ₄By charging isolation diode D ₂Filled negative voltage with, so T ₁The conducting collector voltage is near OV, D ₂End C ₄Pass through R ₅Discharge, T ₂Conducting makes T ₃Keep off-state, work as C ₄Discharge current reduces to a certain degree, T ₂End T ₃Conducting is full closes, and its collector voltage lies prostrate near O, and triac ends, heating wire R ₀Quit work, indicator lamp goes out, expression R ₀Quit work.Therefore adjust C ₄, R ₅The time constant of charge-discharge circuit can be adjusted the ON time of triac.

The present embodiment main performance index:

Power supply: 220V, 50HZ.

Seal the time:＜10 seconds.

Vacuum capability:＞0.2L/S.

Consumption of current: bleed＜25W heat seal＜45W.

Effectively seal length:＞290mm.

Weight: 1.36Kg.

Profile: 350 * 120 * 80mm ³

Claims (4)

1, a kind ofly have bag, vacuumize, the family expenses vacuum fresh-keeping device of functions such as hot-press sealed, by the part of bleeding, the hot-press sealed part, control circuit three parts are formed, and it is characterized in that:

The concrete structure of the part of bleeding is to fix a motor M in box body 9 bottoms, and blade 15 is housed in its rotating shaft, and face of blade the place ahead is facing to an opening of extraction pipe 16, and the other end bleeding point 13 of extraction pipe is fixed in the top of box body panel 12;

The heating wire R of hot-press sealed part ₀Be fixed in the groove of panel 12 1 sides, its top is coated with high temperature insulation bar 11, and bleeding point 13 is positioned at heating wire one side, and the panel opposite side is equipped with the hot pressing top cover 5 that is hinged with box body 9, and top cover is when it closes and heating wire R ₀On the position that overlaps the encapsulation pressure pad 1 that heat proof material is made is housed;

Control circuit part main composition is as follows: aforesaid electric thread R ₀SCR connects with triac, by the type pressure-actuating K switch ₁B level of control and voltage transformer forms the loop, and motor M is by series connected type pressure-actuating K switch ₂, rectifier diode D ₁With aforesaid K ₁Form the loop with source of AC, the trigger circuit of the triac SCR control utmost point pass through K switch ₂, rectifier diode D ₁, K switch ₁Form the loop with source of AC, the function of these trigger circuit is to work as K ₁, K ₂When making itself and power connection, promptly send an adjustable timing pip, K to the triac control utmost point ₁Be open circuited under the natural mode, K ₂Connection motor branch road under the natural mode is then connected after depressing and is triggered branch road, control K ₁, K ₂Button 4 be contained on the panel 12.

2, family expenses vacuum fresh-keeping device as claimed in claim 1 is characterized in that: the trigger circuit of the described controllable silicon SCR control utmost point are by discharging and recharging control aerotron T ₁, C ₄R ₅Integrating circuit triggers control aerotron T ₂With trigger triode T ₃Form T ₁Collecting electrode meets R ₄With charging isolation diode D ₂Negative pole, R ₄Other end power connection end, D ₂Positive pole meets C in the integrating circuit ₄, R ₅An end that joins, R ₅The other end and divider resistance R ₆And T ₂Base stage links to each other, T ₂Collecting electrode and T ₃Base stage links to each other, T ₃Collecting electrode meets the SCR control utmost point, T ₁Base stage, T ₂, T ₃Collecting electrode is respectively by biasing resistance R ₂, load resistor R ₇, R ₈With K switch ₂Dead end K _2-2Link to each other K ₂Another dead end K _2-1Link to each other the integrating resistor R in this circuit with the motor M loop ₅Be adjustable resistance, adjust by panel-mounted knob 10.

3, family expenses vacuum fresh-keeping device as claimed in claim 2 is characterized in that: at described control circuit and K ₁The power end and the heating wire R that link to each other ₀With controllable silicon SCR link end an indicator lamp LED in parallel and current-limiting resistance R ₁Series connected branch road, indicator lamp LED is contained on the panel 12.

4, as claim 1 or 2 or 3 described family expenses vacuum fresh-keeping devices, it is characterized in that: on described panel 12, have plastic bag groove 7, in put plastics reel 3.

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