CN87101627A - Fully-automatic household ice-cream machine - Google Patents

Abstract

A kind ofly in household electric refrigerator, make ice-cream fully-automatic household ice-cream machine, power with general dry battery, the repetitive timing circuit of automatically controlled part and drive circuit intercycle regularly power to DC micromotor, motor drives agitator arm through reducer gear and rotates in cylindrical flat canister, make ice cream in the mode that regularly stir the intercycle, the complete machine average power consumption only is equivalent to the power consumption of a pocket transistor, the motor overload control circuit of automatically controlled part stops machine operation automatically when ice cream is made, cost is extremely low, it is particularly convenient to use, safety, must be outside refrigerator guide line, be applicable to cooperate and make ice cream with various household electric refrigerators.

Description

The invention belongs to a kind of ice-cream fully-automatic household ice-cream machine of in household electric refrigerator, making.

The electronic ice cream maker that is used for household electric refrigerator at present is comparatively many with what supply with the 220V electric main; power line must be drawn the refrigerator outside during use; cause and use inconvenience; dangerous and price height etc. is former thereby can not promote the use of; a kind of ice cream maker of available dc battery power supply; as number of patent application is CN 85203257; name is called the device of the automatic ice cream maker of household electric refrigerator small low-consumption; battery is in continuous heavy-current discharge duty always during because of work; the utmost point is unfavorable for the battery discharge service behaviour, can not autostop etc. reason also make to promote and cause difficulty.

The purpose of this invention is to provide that a kind of and household electric refrigerator be used, with the general dry battery power supply, power consumption is economic, and can make back autostop, cheap, easy to use, safe fully-automatic household ice-cream machine at ice cream.

The operation principle of ice cream maker of the present invention mainly is to utilize the cooling freeze capability of liquid (ice cream solution) not suddenly change, but the continuous process of a slow gradual change is arranged, therefore in the process that the cooling of ice cream solution is freezed, might not need to carry out absolute continuous stirring.And only need carry out intercycle stirring regularly, also can make soft ice-cream principle and design.Fully-automatic household ice-cream machine of the present invention is by controlling the automatically controlled part that DC micromotor carries out the intercycle timing working and can stop machine operation when the motor overload automatically, DC micromotor, reducer stent, reducer gear, agitator arm, the flat canister of garden cylindricality, container cover, motor overload control elastic contact switch K ', the motor overload control gear, plastic casing constitutes, and automatically controlled part is by repetitive timing circuit, drive circuit, the motor overload control circuit constitutes.

Further specify the principle assumption diagram of formation of the present invention: Fig. 1 below in conjunction with accompanying drawing for fully-automatic household ice-cream machine, Fig. 2 is the electrical schematic diagram of the automatically controlled part of ice cream maker, in the theory structure shown in Figure 1, when automatically controlled part (2) control DC micromotor (3) carries out the intercycle timing working, the reducer gear (5) (be generally three grade decelerations) of motor in being loaded on reducer stent (4) drives agitator arm (6) and rotate (shown in Fig. 1 for rotating counterclockwise) in the flat canister of garden cylindricality (7), agitator arm rotates about 5 seconds during work, stop about 40 seconds, repeated rotation is about 5 seconds again, stop about 40 seconds, so regularly rotate the intercycle, angle was not less than 360 ° when each agitator arm rotated, container cover (8) is connected with plastic casing (11), dry cell (1) is contained in the plastic casing (11), plastic casing (11) top or side have removable lid to be convenient for changing battery, motor overload control elastic contact switch K ' (9) is made of three elastic copper sheets spaced apart from each other, middle long a slice and agitator arm the axle center elastic copper sheet of motor overload control gear (10) Elastic Contact of rotation synchronously are that elastic copper sheet contact 2(is the contact 2 of K ' among Fig. 2), two short elastic copper sheets of both sides are that elastic copper sheet contact 1 and elastic copper sheet contact 3(are the contact 1 of K ' among Fig. 2, contact 3), elastic copper sheet contact 2 contact with elastic copper sheet contact 1 (contact 2 that is K ' among Fig. 2 is normally-closed contact with contact 1) at ordinary times, when agitator arm rotates, motor overload control gear (10) rotates, so swing with the rotation of the elastic copper sheet contact 2 of gear (10) Elastic Contact with gear (10), make elastic copper sheet contact 2 constantly replace contact resilient copper sheet contact 1 and contact 3, when agitator arm stops operating, elastic copper sheet contact 2 just can only touch elastic copper sheet contact 1 or contact 3, tip as gear (10) elastic copper sheet contact when stopping operating contacts with the crown of gear (10), then contact 2 is connected and contact 1 disconnection with contact 3, contact then that contact 2 is connected with contact 1 and contact 2 disconnects with contact 3 as the tooth paddy with gear (10), this signal send in automatically controlled part and stops machine operation during with the control motor overload automatically.Automatically controlled part electrical schematic diagram as shown in Figure 2, automatically controlled part is by BG ₃, BG ₄Deng the repetitive timing circuit of forming, BG ₅, BG ₆Deng the drive circuit of forming and by K ', BG ₁BG ₂Constitute Deng the motor overload control circuit of forming, among Fig. 2, BG ₃, BG ₄Deng composition asymmetrical multivibrator, BG during work ₃With BG ₄To replace saturation conduction and end the selection appropriate C ₃, R ₅And C ₄, R ₉, make BG ₃The time of saturation conduction is about 40 seconds, BG ₄The time of saturation conduction is about 5 seconds.Work as BG ₄During saturation conduction, BG ₃End, at this moment the A point is a high level, BG ₅, BG ₆The multiple tube saturation conduction of forming, DC micromotor (3) get electric work, after about 5 seconds, and BG ₃Saturation conduction, BG ₄End, the A point is a low level, BG ₅, BG ₆End, motor (3) dead electricity quits work, after about 40 seconds, and BG ₄Saturation conduction, BG ₃End BG ₅, BG ₆Saturation conduction motor (3) electric work, so go round and begin again, motor will get electric work about 5 seconds, dead electricity stops about 40 seconds, again about 5 seconds of electric work, stop continuous intercycle, about 40 seconds ground timing working.By K ', BG ₁, BG ₂In the motor overload control circuit of forming, when connecting power supply, when not working as motor, BG ₃Saturation conduction, the A point is a low level, makes the D point also be low level, BG ₂Be in cut-off state, BG ₁Saturation conduction, the C point is a low level, when motor gets electric operate as normal, motor overload control gear (10) rotates, and makes the armature contact 2 and contact 1 of motor overload control elastic contact switch K ' (9), alternately contact of contact 3, because of contact 2 communicates with earth point, like this, though at this moment the A point is a high level, capacitor C ₁With C ₂Alternately discharged, make BG by contact 2 ₂Still be in cut-off state.After ice cream is made, as BG at this moment ₃End, the A point is a high level, BG ₅, BG ₆Saturation conduction, motor gets, but because the moment of agitator arm strengthens and can not rotate, like this, motor overload control gear (10) can not rotate, at this moment, contact 2 must disconnect with a contact in contact 1, the contact 3 and can only contact with one of them contact, like this, because of A point at this moment is a high level, C ₁Or C ₂In a capacitor will pass through R ₇Or R ₆Charge, when voltage on capacitor through D ₂Or D ₁Be increased to and make BG ₂During saturation conduction, BG then ₁End, the C point is a high level, through R ₂Make BG ₂Keep the saturation conduction state, like this, the B point is a low level, makes BG ₄, BG ₃The dead-beat roll over condition keeps BG always ₄End BG ₃The saturation conduction state, the A point is a low level, BG ₅, BG ₆End, motor quits work, after motor overload quits work motor, and the only about 1-2MA of whole automatically controlled part power consumption electric current.

The present invention compares with existing electronic home use ice-cream machine, it is economic to have power consumption, owing to adopt the intercycle regularly to power to DC micromotor, the therefore average only about 10-30MA of power consumption electric current, the power consumption of an only suitable pocket transistor, easy to use, can after making, ice cream stop automatically powering to motor, the this moment of not power consumption substantially, therefore not needing the special messenger to guard waits, can automatically make ice cream, owing to use dry cell power supply, therefore use is very safe, and does not need to draw outside refrigerator lead, guaranteed the closure of refrigerator, the freezer chamber of refrigerator refrigerating efficiency is not had influence, and cheap, whole ice cream maker cost is about 1/3rd of AC electrical home use ice-cream machine, but result of use is the most promising home use ice-cream machine that can enter family at present considerably beyond the remarkable advantage of AC electrical home use ice-cream machine and other electronic ice cream maker.

Enforcement of the present invention: structural principle can adopt structure shown in Figure 1, DC micromotor among the figure (3) adopts R-21 type dc toy motor, the empty load of motor electric current is 60-100MA, decelerator adopts three-step gear shift, gear ratio is about 1/100 to 1/120, reducer gear (5) preferably adopts engineering plastics to make, the agitator arm rotational angle is no less than 360 ° in the time of should guaranteeing to be fully loaded with work, agitator arm (6) is made of plastic, on, two impeller blades that stagger down tilt to install around the agitator arm axle center, make agitator arm resistance when rotating the stirring ice cream as far as possible little, available aluminium of the flat canister of garden column type (7) or stainless steel are made, container cover (8) should be difficult for becoming flexible after covering tightly with the flat canister of garden column type (7), plastic casing (11) can be fixedlyed connected with container cover (8), the removable cover of replacing battery (1) is arranged at plastic casing (11) top, use to be convenient for changing battery, one end of the elastic copper sheet contact 2 contact motor overload control gears (10) among the motor overload control elastic contact switch K ' (9) has the oblique angle of a tendency gear, drive the contact 1 of elastic copper sheet in K ' (9) of resilient contact 2 when rotating with assurance gear (10), swing between the elastic copper sheet of contact 3, alternately with contact 1, contact 3 contacts, the crown of motor overload control gear (10) and the variation between the tooth paddy should be tried one's best obviously, and the elastic copper sheet tip of the middle contact 2 of motor overload control elastic switch K ' (9) alternately contacts its crown and tooth paddy when rotating with assurance.The circuit theory of automatically controlled part can adopt BG among electrical schematic diagram shown in Figure 2, the figure ₁, BG ₂, BG ₃, BG ₄, BG ₅Available NPN silicone tube, BG ₆Should select the positive-negative-positive germanium tube for use, C ₁, C ₂Charging makes BG ₂The time of conducting should be less than BG ₃The time of machine operation when ending, general desirable about 2 seconds, promptly should make BG about 2 seconds after the motor overload stall ₂Saturation conduction, the B point is a low level, the time of machine operation can be adjusted in second at 3-7, the time that motor stops can be adjusted in second at 20-60, refrigeration situation on refrigerator is decided, and generally the machine operation time can be transferred about 5 seconds, and the time that motor stops to transfer about 40 seconds.The driving electricity also available transistor driving micro DC relay of circuit or the reed switch relay of automatically controlled part constitute, and like this, just can use the transistor driving relay earlier, connect the DC micromotor power supply by relay contact again and make motor get electric work.The circuit that armature voltage reduced when the motor overload control circuit of automatically controlled part also can be transshipped by discriminating DC micromotor (3) constitutes, when to be armature voltage because of motor (3) overload reduce, this low pressure makes the B point keep a low level through control circuit, and making motor (3) keep the state that quits work, power supply can save dry cell No. 1 with 2-3.

Claims (4)

1, a kind of fully-automatic household ice-cream machine, it is characterized in that it is by controlling the automatically controlled part (2) that DC micromotor carries out the intercycle timing working and can stop machine operation when the motor overload automatically, DC micromotor (3), reducer stent (4), reducer gear (5), agitator arm (6), the flat canister of garden cylindricality (7), container cover (8), motor overload control elastic contact switch K ' (9), motor overload control gear (10), plastic casing (11) constitutes.

2, ice cream maker as claimed in claim 1 is characterized in that automatically controlled part (2) by the intercycle timing circuit, drive circuit, and the motor overload control circuit constitutes.

3, ice cream maker as claimed in claim 1 is characterized in that the drive circuit of automatically controlled part (2) also can be made of transistor driving miniature relay or reed switch relay circuit.

4, ice cream maker as claimed in claim 1 is characterized in that the motor overload control circuit of automatically controlled part (2) also can be made of the control circuit of differentiating DC micromotor (3) armature voltage low value.

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