CN104825055A - Soybean milk machine - Google Patents

Soybean milk machine Download PDF

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Publication number
CN104825055A
CN104825055A CN201410837500.0A CN201410837500A CN104825055A CN 104825055 A CN104825055 A CN 104825055A CN 201410837500 A CN201410837500 A CN 201410837500A CN 104825055 A CN104825055 A CN 104825055A
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CN
China
Prior art keywords
motor
branch road
resistive heating
heating load
switching
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CN201410837500.0A
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Chinese (zh)
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CN104825055B (en
Inventor
王旭宁
余青辉
吴涯
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九阳股份有限公司
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Publication of CN104825055A publication Critical patent/CN104825055A/en
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Publication of CN104825055B publication Critical patent/CN104825055B/en

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Abstract

The invention relates to the field of food processing equipment, and discloses a soybean milk machine. The speed adjustable range of a motor can be expanded, and the starting current, the starting power and the starting noise can also be reduced. According to the soybean milk machine, the control circuit of a food processing machine comprises a motor branch circuit, a resistive heating load and a switching system, wherein the motor branch circuit comprises a motor; the switching system is used for controlling the connection state of the motor branch circuit and the resistive heating load, and the switching system at least comprises a first connection state and a second connection state; in the first connection state, the resistive heating load and the motor branch circuit are connected in series between two poles of an input power supply; in the second connection state, the motor branch circuit is connected between the two ends of the input power supply.

Description

A kind of soy bean milk making machine

Technical field

The present invention relates to food processing equipment field, particularly the control technology of soy bean milk making machine.

Background technology

When soy bean milk making machine carries out food processing, need to carry out to pulverize according to the difference of food and manufacture craft, stir or the action such as cleaning, these actions have driven by motor, and speed difference between these actions is larger, needing the rotating speed of more than 10000rpm during as pulverized, stirring and cleaning the rotating speed then needing about 1000rpm.

Current soy bean milk making machine generally adopts the electronic switching device such as controllable silicon or relay to control motor, and regulates its rotating speed.But the speed adjustable range of electronic switching element is difficult to reach 1000rpm ~ 10000rpm, the slow-speed of revolution that cannot realize motor controls, and reaches the functions such as stirring, cleaning and peeling.In addition, during electric motor starting, there is the phenomenon that electric motor starting electric current is excessive and noise is excessive.

Fig. 1 is soy bean milk making machine prior art operation principle block diagram, and FUSE1 is total protective tube, and RG1 is resistive heating load, and TK1 is temperature controller, and RS1 is thermal fuse-link, and S1 is heating branch switch; MT1 is direct current generator, and DB1 is rectifier bridge stack (if MT1 is that the input of DB1 is then directly applied to MT1 without DB1 rectification by alternating current generator), and FUSE2 is electric motor protecting protective tube, and S2 is motor branch switch.2 pin of DB1 directly connect with the N line of power supply, and whether uncontrollable motor branch road connects with resistive heating load loop.When motor for soymilk machine starts, motor directly start or motor start-up procedure short, cause electric motor starting electric current large, easily greater impact caused to motor and electrical network, reduce electrical machinery life, start noise comparatively large, affect Consumer's Experience.Meanwhile, the slow-speed of revolution that cannot realize motor controls to reach the functions such as stirring, cleaning and peeling.

When motor for soymilk machine starts, motor directly start or motor start-up procedure short, cause electric motor starting electric current large, easily greater impact caused to motor and electrical network, reduce electrical machinery life.Meanwhile, during electric motor starting, start noise comparatively large, affect Consumer's Experience.A kind of mode (number of patent application 200,910 114893.1) realizing soft starter for motor and soft switching by controlling thyristor operating angle disclosed in existing patent, be illustrated in figure 5 a kind of implementing circuit conceptual scheme of prior art, wherein TRC1 is controllable silicon.But there is larger defect in the program: because thyristor operating angle controls according to ac zero-crossing point signal, and control machines needs certain hour, if trigger controllable silicon at the very large angle of flow, zero passage detection is deviation a little, just be easy to occur motor vibrating phenomenon (thyristor operating angle controls the reference of concrete principle hereafter to the elaboration of Fig. 6 to Fig. 9), cause simple thyristor operating angle to control the starting current of motor and startup noise effectively to be reduced.

Thyristor operating angle controls:

Thyristor operating angle control method principle assumption diagram as shown in Figure 6, micro-control unit (Micro Controller Unit, be called for short " MCU ") detect line voltage by voltage detecting circuit, zero cross detection circuit detects zero-crossing of alternating current, thyristor operating angle is adjusted according to voltage and zero crossing, during electric motor starting, machine controllable silicon triggers (as shown in Fig. 7 motor copped wave work half wave cycles schematic diagram at the larger angle of flow, if trigger controllable silicon at 50HZ alternation 8ms place, the voltage being added in motor two ends is the waveform in figure between 8ms ~ 10ms), the voltage at motor two ends is less, so electric motor starting electric current and noise less.

As shown in Figure 8, civil power is through resistance R11, R12 dividing potential drop after the shaping of D1 half-wave, and electric capacity C8 discharge and recharge, electric capacity C7 filtering, exporting a voltage Vad, MCU detection Vad magnitude of voltage can know ac voltage for voltage detecting circuit.

As shown in Figure 9, civil power triggers the break-make of Q2 to zero cross detection circuit after the shaping of D2 half-wave after R11 and R12, and when R12 arrives Q2 trigger voltage, ZERO is detected as low level, otherwise detects high level, and MCU detects that low and high level then detects civil power zero crossing.

Prior art generally uses thyristor operating angle control mode drive motors as described above work, because thyristor operating angle controls according to ac zero-crossing point signal, and control machines needs certain hour, if trigger controllable silicon at the very large angle of flow, zero passage detection is deviation a little, just be easy to occur motor vibrating phenomenon, although so prior art can control motor at lower rotary speed working, still effectively can pulverize material during machine operation.

Therefore, when soy bean milk making machine needs to clean material, when prior art controls machine operation, material integrality can be destroyed, not reach the object of cleaning material;

When soy bean milk making machine needs to carry out peeling operation to materials such as soybean, prior art controls machine operation and soybean can be pulverized, and cannot meet the demands;

When soymilk grinder congee, rice paste, mixed congee etc., need to stir material, prevent material sticky end (when making the functions such as congee, need long-time infusion, be easy to occur material sticky end phenomenon), although the object of stirring can be reached when prior art controls machine operation, also can comminuting matter while stirring, often congee has finally been stirred into rice paste, cannot meet Expected Results.

Summary of the invention

The object of the present invention is to provide a kind of soy bean milk making machine, both can expand the speed adjustable range of motor, starting current, starting power can be reduced again and start noise.

For solving the problems of the technologies described above, embodiments of the present invention disclose a kind of soy bean milk making machine, comprise cup and be arranged on the reducing mechanism in cup, described reducing mechanism is driven by motor, and described cup is provided with heater, and described heater is resistive heating load, comprise control circuit, its control circuit comprises: motor branch road, at least one resistive heating load and change-over switch system, and wherein, motor branch road comprises motor;

Change-over switch system is for controlling the connection status of motor branch road and at least one resistive heating load, and change-over switch system at least comprises the first connection status and the second connection status;

Under the first connection status, at least one resistive heating load is connected in series into motor branch road;

Under the second connection status, motor branch road is directly connected with input power.

Compared with prior art, the main distinction and effect thereof are embodiment of the present invention:

At electric motor starting or when needing the motor slow-speed of revolution, resistive heating load is concatenated in motor branch road, when needs motor height rotating speed, motor branch road is directly connected with input power, both can expand the speed adjustable range of motor, and starting current, starting power can have been reduced again and start noise.Because motor speed can be even lower, so slow-speed of revolution mixing effect is better, does not peel during cleaning bean or pea, during peeling, do not destroy material integrality.

Further, by increasing a resistive heating load in head, head condensed water can be removed, promoting the lifting waterproof ability of soy bean milk making machine, improving the reliability of circuit.

Further, resistive heating load is concatenated in motor branch road, and on resistive heating load a diode in parallel again, when using AC power, the power of resistive heating load can be made suitably to reduce, and the power of motor suitably improves, achieve more careful power and control.

Accompanying drawing explanation

Fig. 1 is the principle schematic of a kind of soy bean milk making machine in this prior art;

Fig. 2 is the control circuit principle schematic of a kind of soy bean milk making machine in first embodiment of the invention;

Fig. 3 is the control circuit principle schematic of a kind of soy bean milk making machine in second embodiment of the invention;

Fig. 4 is the implementing circuit figure of the control circuit of a kind of soy bean milk making machine in third embodiment of the invention;

Fig. 5 is a kind of implementing circuit conceptual scheme of the control circuit of prior art soy bean milk making machine;

Fig. 6 is the principle assumption diagram of thyristor operating angle control method;

Fig. 7 is motor copped wave work half wave cycles schematic diagram;

Fig. 8 is voltage detecting circuit schematic diagram;

Fig. 9 is zero cross detection circuit schematic diagram;

Figure 10 is the control circuit principle schematic of a kind of soy bean milk making machine in four embodiment of the invention;

Figure 11 is the control circuit principle schematic of a kind of soy bean milk making machine in fifth embodiment of the invention;

Figure 12 is the control circuit principle schematic of a kind of soy bean milk making machine in sixth embodiment of the invention;

Figure 13 is the control circuit principle schematic of a kind of soy bean milk making machine in seventh embodiment of the invention;

Figure 14 is the control circuit principle schematic of a kind of soy bean milk making machine in eighth embodiment of the invention;

Figure 15 is the control circuit principle schematic of a kind of soy bean milk making machine in ninth embodiment of the invention;

Figure 16 falls the switching waveform figure after ripple copped wave Hybrid mode to motor branch switch S2 in ninth embodiment of the invention.

Detailed description of the invention

In the following description, many ins and outs are proposed in order to make reader understand the application better.But, persons of ordinary skill in the art may appreciate that even without these ins and outs with based on the many variations of following embodiment and amendment, also can realize each claim of the application technical scheme required for protection.

For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.

First embodiment of the invention relates to a kind of soy bean milk making machine, and Fig. 2 is the control circuit principle schematic of this soy bean milk making machine.

Specifically, as shown in Figure 2, this soy bean milk making machine, its control circuit comprises: motor branch road, resistive heating load and change-over switch system, and motor branch road comprises motor;

Change-over switch system is for controlling the connection status of motor branch road and resistive heating load, and change-over switch system at least comprises the first connection status and the second connection status;

Under the first connection status, resistive heating load and motor branch road are connected between input power the two poles of the earth;

Under the second connection status, motor branch road is connected between input power two ends.In each embodiment of the application, motor branch road is connected to and refers between input power two ends that motor branch road is not connected resistive heating load, and motor branch road independently forms loop in other words.

Change-over switch system comprises at least one switching device (as relay, controllable silicon, electronic switch etc.) and conducting wire, can be switched the annexation of multiple devices of specifying by the folding of each switching device.Change-over switch system can switch between multiple connection status.A key of the application to realize first, second two kinds of connection status, and the mode realizing these two kinds of connection status is a lot, is all prior art, can only exemplify out that some are representational in the embodiment of the application.

Motor branch road refers to the current branch comprising motor, a motor (situation as alternating current generator) can be only had, also can comprise motor and related device (such as generally need when direct current generator to comprise rectification circuit, or fuse etc.), but not comprise resistive heating load.Using alternating current generator or use the combination of direct current generator and rectification circuit (as rectifier bridge stack), is the equivalent technological means of usual two kinds in this area.From effect, the combination of direct current generator and rectification circuit is equivalent to an alternating current generator, can think an alternating current generator in logic.First end and second end of motor alleged in each embodiment of the application include alternating current generator and direct current generator two kinds of situations.In direct current generator situation, first end and second end of motor are equivalent to first end that rectification circuit is connected with power supply and the second end.

Motor branch road direct connection with input power refers to that motor does not comprise any resistive heating load in the loop.

At electric motor starting or when needing the motor slow-speed of revolution, resistive heating load is concatenated in motor branch road, when needs motor height rotating speed, motor branch road is directly connected with input power, both can expand the speed adjustable range of motor, and starting current, starting power can have been reduced again and start noise.Because motor speed can be even lower, so slow-speed of revolution mixing effect is better, does not peel during cleaning bean or pea, during peeling, do not destroy material integrality.

In each embodiment of the application, resistive heating load can be realized by multiple device, as heating tube, heating plate, heating wire etc.

In a preference, resistive heating load is a part of heating branch road; Whether soy bean milk making machine also comprises gauge tap system, be at least connected between the two ends of input power for controlling heating branch road.In each embodiment of the application, refer to that heating branch road connect with motor branch road between the two ends that heating branch road is connected to input power, heating branch road independently forms loop in other words.

In a preference, soy bean milk making machine is soy bean milk making machine.Certainly, technical scheme of the present invention also may be used for other soy bean milk making machine outside soy bean milk making machine, as long as this soy bean milk making machine has motor and resistive heating load.Heating branch road refers to the current branch comprising resistive heating load, is made up of, plays the effect of heating one or more device.

In a preference, heating branch road comprises the temperature controller be cascaded, resistive heating load and thermal fuse-link, and the resistive heating load in heating branch road is used for the heating of food in feeder processing machine.In another example, temperature controller and thermal fuse-link only have one.At another example, there is no temperature controller and thermal fuse-link.

Second embodiment of the invention relates to a kind of soy bean milk making machine.

Second embodiment is a specific implementation of the first embodiment, specifically:

Change-over switch system comprises the first switching device and second switch device;

First switching device is connected between motor branch road and heating branch road;

The combination that first switching device is formed with heating branch road is in parallel with second switch device.

In a preference of present embodiment, the annexation between core component is: the first end of the first switching device is connected with the first end of heating branch road (containing resistive heating load).Second end of the first switching device is connected with the second end of motor branch road.The first end of second switch device is connected with the second end of motor branch road.Second end of second switch device is connected with the second end of input power.The heating first end of branch road is connected with the first end of input power.Heating the second end of branch road is connected with the second end of input power; The first end of motor branch road is connected with the first end of input power.Under the first connection status, the first switching device closes, and second switch device disconnects.Under the second connection status, the first switching device disconnects, and second switch device closes.

As a preference of present embodiment, be illustrated in figure 3 the solution principle block diagram of soy bean milk making machine.

Wherein, in Fig. 3, RG1 is resistive heating load, and change-over switch system comprises the first switching device (S4) and second switch device (S3).MT1 is direct current generator; DB1 is rectifier bridge stack (if MT1 is that the input of DB1 is then directly applied to MT1 without DB1 rectification by alternating current generator); TK1 is temperature controller; RS1 is thermal fuse-link; FUSE1 is total protective tube; S1 is heating branch switch, and FUSE2 is electric motor protecting protective tube, and S2 is motor branch switch.N line is the second end of input power, and L line is the first end of input power.Preferably, S1 and S2 realizes with controllable silicon.

Under the first connection status, S4 closes, and S3 disconnects, and resistive heating load is connected in series into motor branch road.

Under the second connection status, S4 disconnects, and S3 closes, and motor branch road is directly connected with input power.

Theory diagram as shown in Figure 3 does not directly connect with the N line of power supply with 2 pin of existing scheme (as shown in Figure 1) unlike DB1, and is connected with N line by switch S 3, is connected by the tie point of switch S 4 with switch S 1 and temperature controller TK1 simultaneously.Between motor branch road and heating branch road, add 1 two-way switch, motor branch road can be controlled and whether connect with resistive heating load loop.

By increasing by 1 two-way switch, when machine operation, close switch S4 simultaneously, cut-off switch S3, resistive heating load loop is sealed in motor branch road, because resistive heating load itself has certain resistance, seal in resistive heating load dividing potential drop and reduce motor speed, the ultralow rotating speed achieving motor controls.

The operation principle that Fig. 3 scheme is concrete is as follows:

When electric motor starting, S1, S3 can be disconnected, S2, S4 be closed, now motor M T1 and resistive heating load RG1 is cascaded, thus reduces starting current, starting power and start noise.

After electric motor starting, can be disconnected by S4, S3 closes, and now motor M T1 is directly connected to power supply, thus makes motor enter flat-out duty again.Because motor had had certain rotating speed before entering full power operation state, so reduce starting current, starting power and start noise.

When only needing the independent full power operation of motor, S1, S4 can be disconnected, S2 and S3 is closed.

Need resistive heating load RG1 and motor M T1 all full power operation time, S4 can be disconnected, S1, S2, S3 be closed, now resistive heating load RG1 and motor M T1 are directly connected with power supply.

When only needing the independent full power operation of resistive heating load RG1, S2, S3, S4 can be disconnected, be closed by S1, now resistive heating load RG1 is directly connected with power supply, and motor M T1 quits work.

When needing the motor slow-speed of revolution, S1, S3 can be disconnected, S2, S4 are closed, now resistive heating load RG1 is concatenated in motor branch road, can fall lower by motor speed, so slow-speed of revolution mixing effect is better, do not peel during cleaning bean or pea, during peeling, do not destroy material integrality.

Third embodiment of the invention relates to a kind of soy bean milk making machine.

3rd embodiment is a specific implementation of the first embodiment, specifically:

Change-over switch system comprises the 3rd switching device, and the 3rd switching device comprises a movable contact and two stationary contacts;

The movable contact of the 3rd switching device is connected with the first end of motor branch road;

First stationary contact of the 3rd switching device is connected with one end of heating branch road;

Second stationary contact of the 3rd switching device is connected with one end of input power.

In a preference of present embodiment, the annexation between core component is: change-over switch system comprises the 3rd switching device, and the 3rd switching device comprises a movable contact and two stationary contacts.The movable contact of the 3rd switching device is connected with the second end of motor branch road.First stationary contact of the 3rd switching device is connected with the first end of heating branch road (containing resistive heating load).Second stationary contact of the 3rd switching device is connected with the second end of input power.The heating first end of branch road is connected with the first end of input power, and heating the second end of branch road is connected with the second end of input power.The first end of motor branch road is connected with the first end of input power.Under the first connection status, the movable contact of the 3rd switching device is connected with the first stationary contact.Under the second connection status, the movable contact of the 3rd switching device is connected with the second stationary contact.

Be appreciated that, in each embodiment of the application, the connection of one end of a device and one end of another device comprises and connects and indirectly connects two kinds of situations, and wherein indirect connection refers to that two devices are on a current path, but between can have the existence of other device.Such as, when the movable contact of the 3rd switching device is connected with one end of motor, if indirectly connect, the existence of other devices such as resistance, inductance, relay, semiconductor devices, rectifier bridge stack can be had, as long as one end of this movable contact and motor can on same current path between this movable contact and one end of motor.

As a preference of present embodiment, be illustrated in figure 4 the implementing circuit figure of soy bean milk making machine.Realize heating branch switch and motor branch switch by relay K 1 and controllable silicon TRC1 in figure, realize the 3rd switching device by relay K 2, it comprises a movable contact and two stationary contacts.The movable contact of K2 is connected with second end of motor M T1 by DB1.First stationary contact of K2 is connected with the first end of the first resistive heating load RG1.Second stationary contact of K2 is connected with the second end N line of input power.

The operation principle of Fig. 4 scheme is substantially identical with Fig. 3 scheme, and difference is just with the relay K 1(i.e. electronic switch of a single-pole double throw) instead of S1 and S2 in Fig. 3, the relay K 2(i.e. electronic switch of a single-pole double throw) instead of S3 and S4 in Fig. 3.For relay K 1, when movable contact 1 is connected with stationary contact 2, is equivalent to S2 and closes S1 disconnection; When movable contact 1 is connected with stationary contact 3, is equivalent to S1 and closes S2 and open.For relay K 2, when movable contact 1 is connected with stationary contact 2, is equivalent to S3 and closes S4 disconnection; When movable contact 1 is connected with stationary contact 3, is equivalent to S4 and closes S3 and open.

In Fig. 4 scheme, because employ controllable silicon TRC1, so the size of current on motor M T1 and negativity heating load RG1 dynamically can be adjusted within the specific limits.In Fig. 4, the dynamic conditioning of controllable silicon TRC1 has two kinds of situations, and the first situation is that motor M T1 is directly connected to power supply, and now controllable silicon TRC1 carries out the dynamic conditioning of rotating speed on the high-revolving basis of motor.The second situation is that motor M T1 connects with negativity heating load RG1, and now controllable silicon TRC1 carries out the dynamic conditioning of rotating speed on the slow-revving basis of motor.Only have the adjustment of rotational speed in the first situation in prior art, control when lower by motor speed, thyristor operating angle will be very large, thus cause motor vibrating phenomenon (analysis in detail in background technology).And in Fig. 4 scheme, because there has been the adjustment in the second situation, the original rotating speed of motor is just not high, just motor speed can be turned down further, so considerably increase soy bean milk making machine effective Dynamic Speed adjusting range on the whole when less thyristor operating angle.

Therefore, when utilizing present embodiment control motor to clean material, material integrality can not be destroyed, meet material cleaning requirement; Present embodiment is utilized to control motor when carrying out peeling operation to materials such as soybean, because motor speed is very low, only can to damage skin of beancurd, can not milling soya seeds, meet peeling requirement; When utilizing present embodiment control motor to realize agitating function, due to motor can be controlled at ultralow rotary speed working, effectively can not pulverize material while stirring, material sticky end problem can be solved.

Compared to existing technology, the ultralow rotating speed that can realize motor controls present embodiment, and demand is pulverized in the making beating that not only can meet prior art, and can realize stirring, cleaning, the functions such as peeling.

Present embodiment can make slurry temperature more even, promotes temperature sensor thermometric accuracy.During existing soymilk grinder cooking, because resistive heating load is in bottom of cup or side, material in cup is caused to be heated uneven, so in cup there is the temperature difference near resistive heating load part with away from resistive heating load part in material, temperature sensor cannot accurately detect temperature in cup, affects the release of effects on slurry making and nutritional labeling.In resistive heating load heating process, slurry is stirred at interval can make homogeneous temperature in cup, promotes temperature sensor thermometric accuracy.But when prior art control motor stirs slurry, effectively can pulverize material simultaneously, disturb normal slurrying flow process and effects on slurry making.Present embodiment can control motor at ultralow rotary speed working, effectively can not pulverize while stirring to material, well solves the temperature sensor thermometric that non-uniform temperature in cup causes and is forbidden problem.Compared to existing technology, cost is cheaper for which, can meet the application demand heating simultaneously and pull an oar.Heat simultaneously and pull an oar, saving the slurrying cycle.And pull an oar when small-power infusion, can sticky end be prevented and in cup temperature more even, promote temperature sensor thermometric accuracy.

Four embodiment of the invention relates to a kind of soy bean milk making machine.

4th embodiment is a specific implementation of the first embodiment, specifically:

Change-over switch system comprises the 4th switching device;

Resistive heating load and the series connection of motor branch road; 4th switching device is in parallel with resistive heating load.

In a preference of present embodiment, the annexation between core component is: change-over switch system comprises the 4th switching device.4th switching device is serially connected between the second end of motor branch road and the second end of input power.The first end of heating branch road (containing resistive heating load) is connected with the first end of input power.Heating the second end of branch road is connected with the second end of input power.The first end of motor branch road is connected with the first end of input power.Second end of motor branch road is connected with the first end of heating branch road.Under the first connection status, the 4th switching device disconnects.Under the second connection status, the 4th switching device closes.

As a preference of present embodiment, be the solution principle block diagram of soy bean milk making machine as shown in Figure 10.

Compared with the scheme shown in Fig. 3,2 pin eliminating switch S 4, DB1 connect with the tie point of switch S 1 and temperature controller TK1, simultaneously by S3(i.e. the 4th switching device) connect with power supply N line.

Figure 10 scheme works while can not realizing heating and motor relatively high power, and shown in all the other with Fig. 3, solution principle is identical.Specifically,

When electric motor starting, S1, S3 can be disconnected, be closed by S2, now motor M T1 and resistive heating load RG1 is cascaded, thus reduces starting current, starting power and start noise.

After electric motor starting, can be closed by S3, now motor M T1 is directly connected to power supply again, thus makes motor enter flat-out duty.Because motor had had certain rotating speed before entering full power operation state, so reduce starting current, starting power and start noise.

When only needing the independent full power operation of motor, S1 can be disconnected, S2 and S3 is closed.

When only needing the independent full power operation of resistive heating load RG1, S2, S3 can be disconnected, be closed by S1, now resistive heating load RG1 is directly connected with power supply, and motor M T1 quits work.

When needing the motor slow-speed of revolution, S1, S3 can be disconnected, be closed by S2, now resistive heating load RG1 is concatenated in motor branch road, can fall lower by motor speed.

The beneficial effect of this preference is mainly:

1, this preference utilizes resistive heating load to obtain less rotating speed as reduction of speed resistance, realizes preferably stirring, cleaning and peeling function;

2, this preference utilizes resistive heating load effectively to reduce starting current as current-limiting resistance, and lifting motor functional reliability also reduces starting noise;

3, this preference provides the ultralow rotating speed control mode of a kind of motor, and in pulping process, slurry is stirred at interval, makes temperature in cup more even, promotes temperature sensor thermometric accuracy;

4, this preference well achieves motor and heats and works when smaller power simultaneously, shortens function Production Time;

5, the contrast of preference shown in this preference and Fig. 3 has cost advantage.

5th embodiment improves on the basis of the second embodiment, main improvements are: by increasing a resistive heating load in head, head condensed water can be removed, promote the lifting waterproof ability of soy bean milk making machine, improve the reliability of circuit.Specifically:

Resistive heating load in heating branch road is the first resistive heating load;

Soy bean milk making machine also comprises the second resistive heating load; Second resistive heating load is arranged in the head of soy bean milk making machine, for the evaporation of condensed water in head and steam;

Second resistive heating load is serially connected between heating branch road and change-over switch system.

As a preference of present embodiment, be the solution principle block diagram of soy bean milk making machine as shown in figure 11.Wherein, the annexation between core component is: the first end of heating branch road (containing the first resistive heating load RG1, temperature controller TK1 and thermal fuse-link RS1) is connected with the first end of input power.Heating the second end of branch road is connected with the second end of input power.The first end of the second resistive heating load (RG2) is connected with the first end of input power.Change-over switch system comprises S4 and S3.The first end of S4 is connected with second end of RG2.Second end of S4 is connected with the second end of motor branch road.The first end of S3 is connected with the second end of motor branch road.Second end of S3 is connected with the second end of power supply.The first end of motor branch road is connected with input power first end.Under the first connection status, S4 closes, and S3 disconnects.Under the second connection status, S4 disconnects, and S3 closes.

Compared with the scheme shown in Fig. 3, add resistive heating load RG2.

In operation principle, Figure 11 scheme is substantially identical with Fig. 3 scheme, and main difference is, at electric motor starting or when needing the slow-speed of revolution, S1, S3 is disconnected, S2, S4 is closed.Fig. 3 scheme in this case motor M 1 only heating load RG1 resistive with connect, and Figure 11 scheme in this case motor M 1 connect with two resistive heating load RG1 and RG2 simultaneously, so due to the existence of RG2, rotating speed and the starting current of motor can be reduced further.

In the present embodiment, RG2 can be arranged in head, adds the evaporation that thermogenetic heat can be used for condensed water and steam in head, and RG1 is then mainly used in the heating of food in feeder processing machine.

The beneficial effect of this preference is mainly:

1, this programme utilizes resistive heating load to obtain less rotating speed as reduction of speed resistance, realizes preferably stirring, cleaning and peeling function;

2, this programme utilizes resistive heating load effectively to reduce starting current as current-limiting resistance, and lifting motor functional reliability also reduces starting noise;

3, present solution provides the ultralow rotating speed control mode of a kind of motor, in pulping process, slurry is stirred at interval, makes temperature in cup more even, promotes temperature sensor thermometric accuracy;

4, this programme well achieves motor and heats and works when smaller power simultaneously, shortens function Production Time;

5, this programme can remove head condensed water by resistive heating load RG2.

Sixth embodiment of the invention relates to a kind of soy bean milk making machine.

6th embodiment is a specific implementation of the first embodiment, specifically:

Resistive heating load is the first resistive heating load;

Soy bean milk making machine also comprises the second heating branch road, is connected between input power two ends, and the second heating branch road comprises the second resistive heating load;

First resistive heating load is arranged in the head of soy bean milk making machine, for the evaporation of condensed water in head and steam;

Second resistive heating load is used for the heating of food in feeder processing machine.

As a preference of present embodiment, be the solution principle block diagram of soy bean milk making machine as shown in figure 12.Wherein, 2 pin of DB1 are connected with power supply N line by resistive heating load RG1, and switch S 3 is in parallel with RG1.

Annexation in this preference between core component is: this soy bean milk making machine comprises the second resistive heating load (GR2) and the first resistive heating load (RG1), wherein RG2 is in the second heating branch road, and the second heating branch road also comprises temperature controller TK1 and thermal fuse-link RS1 except RG2.The second heating first end of branch road is connected with the first end of input power.Second heating the second end of branch road is connected with the second end of input power.The first end of RG1 is connected with the second end of motor branch road.Second end of RG1 is connected with the second end of input power.Change-over switch system comprises S3.The first end of S3 is connected with the first end of RG1.Second end of S3 is connected with second end of RG1.The first end of motor branch road is connected with input power first end.Under the first connection status, S3 disconnects.Under the second connection status, S3 closes.

The operation principle of Figure 12 scheme is as follows:

When electric motor starting, S1, S3 can be disconnected, be closed by S2, now motor M T1 and resistive heating load RG1 is cascaded, thus reduces starting current, starting power and start noise.

After electric motor starting, can be closed by S3, now motor M T1 is directly connected to power supply again, thus makes motor enter flat-out duty.Because motor had had certain rotating speed before entering full power operation state, so reduce starting current, starting power and start noise.

When only needing the independent full power operation of motor, S1 can be disconnected, S2 and S3 is closed.

When only needing the independent full power operation of resistive heating load RG2, S2, S3 can be disconnected, be closed by S1, now resistive heating load RG1 is directly connected with power supply, and motor M T1 quits work.

When needing the motor slow-speed of revolution, S1, S3 can be disconnected, be closed by S2, now resistive heating load RG1 is concatenated in motor branch road, can fall lower by motor speed.

Preferably, RG1 can be arranged in head, adds the evaporation that thermogenetic heat can be used for condensed water and steam in head, and RG1 is then for the heating of food in feeder processing machine.

The beneficial effect of this preference is mainly:

1, this programme utilizes resistive heating load RG1 to obtain less rotating speed as reduction of speed resistance, realizes preferably stirring, cleaning and peeling function;

2, this programme utilizes resistive heating load RG1 effectively to reduce starting current as current-limiting resistance, and lifting motor functional reliability also reduces starting noise;

3, present solution provides the ultralow rotating speed control mode of a kind of motor, in pulping process, slurry is stirred at interval, makes temperature in cup more even, promotes temperature sensor thermometric accuracy;

4, this programme well achieves motor and heats and works when smaller power simultaneously, shortens function Production Time;

5, this programme can remove head condensed water by resistive heating load RG1.

Seventh embodiment of the invention relates to a kind of soy bean milk making machine.

7th embodiment is an improvement project of the 4th embodiment, specifically:

This soy bean milk making machine also comprises the 5th switching device with motor branch circuit parallel connection, and is connected on the 6th switching device between described heating branch road and power supply one end.

As a preference of present embodiment, be the solution principle block diagram of soy bean milk making machine as shown in figure 13.Switching device S1(is equivalent to the 6th switching device by this programme) with heating branch road and motor branch road be connected in series after be connected on both ends of power, Simultaneous Switching device S3 is attempted by heating branch road, and switching device S5(is equivalent to the 5th switching device) be attempted by motor branch road.

Concrete annexation between the core component of this preference is: change-over switch system comprises switching device S3 and S5.The first end of heating branch road (containing the first resistive heating load RG1, temperature controller TK1 and thermal fuse-link RS1) is connected with the first end of input power.Second end of heating branch road is connected with the first end of motor branch road.Second end of motor branch road is connected with the second end of input power.The first end of S3 is connected with the first end of heating branch road.Second end of S3 is connected with the second end of heating branch road.The first end of S5 is connected with the first end of motor branch road.Second end of S5 is connected with the second end of motor branch road.Under the first connection status, S3 disconnects, and S5 disconnects.Under the second connection status, S3 disconnects, and S5 closes.

The operation principle of the scheme of Figure 13 is as follows:

When electric motor starting, S3, S5 can be disconnected, be closed by S1, now motor M T1 and resistive heating load RG1 is cascaded, thus reduces starting current, starting power and start noise.

After electric motor starting, can again by S3 closed (S5 still disconnect), now motor M T1 is directly connected to power supply, thus makes motor enter flat-out duty.Because motor had had certain rotating speed before entering full power operation state, so reduce starting current, starting power and start noise.Under this state, resistive heating load RG1 quits work.

When only needing the independent full power operation of resistive heating load RG1, S3 can be disconnected, S1, S5 be closed, now resistive heating load RG1 is directly connected with power supply, and motor M T1 quits work.

When needing the motor slow-speed of revolution, S3, S5 can be disconnected, be closed by S1, now resistive heating load RG1 is concatenated in motor branch road, can fall lower by motor speed.

The beneficial effect of this preference is mainly:

1, this programme utilizes resistive heating load to obtain less rotating speed as reduction of speed resistance, realizes preferably stirring, cleaning and peeling function;

2, this programme utilizes resistive heating load effectively to reduce starting current as current-limiting resistance, and lifting motor functional reliability also reduces starting noise;

3, this programme well achieves motor and heats and works when smaller power simultaneously, shortens function Production Time;

4, present solution provides the ultralow rotating speed control mode of a kind of motor, in pulping process, slurry is stirred at interval, makes temperature in cup more even, promotes temperature sensor thermometric accuracy;

5, this programme and preferred version contrast and have cost advantage.

Eighth embodiment of the invention relates to a kind of soy bean milk making machine.

8th embodiment second or the 3rd embodiment basis on improve, main improvements are:

Soy bean milk making machine also comprises a diode; The combination that change-over switch system and heating branch road are formed and diodes in parallel.

Resistive heating load is concatenated in motor branch road, and a diode in parallel again on resistive heating load, when using AC power, can make the power of resistive heating load suitably reduce, and the power of motor suitably improves, achieve more careful power and control.

As a preference of present embodiment, be the solution principle block diagram of soy bean milk making machine as shown in figure 14.This programme compares the scheme shown in Fig. 3, between 1 pin and N line of DB1, adds a diode D1.

In this preference, the concrete annexation between core component is: change-over switch system comprises switching device S3 and S4.Soy bean milk making machine also comprises a diode (D1).The heating first end of branch road is connected with the first end of input power.Heating the second end of branch road is connected with the second end of input power.The first end of motor branch road is connected with input power first end.Second end of motor branch road is connected with the positive pole of diode.The negative pole of two poles is connected with the second end of input power.The first end of S4 is connected with the second end of motor branch road.Second end of S4 and being connected with the first end of heating branch road of motor branch road.The first end of S3 is connected with the positive pole of diode.Second end of S3 is connected with the negative pole of diode.Under the first connection status, S4 closes, and S3 disconnects.Under the second connection status, S4 disconnects, and S3 closes.

Figure 14 scheme is many relative to the scheme of a Fig. 3 diode D1, thus more than the scheme of Fig. 3 one-level motor speeds control.Namely the scheme of Fig. 3 has high and low two kinds of basic rotating speeds, and that Figure 14 has high, medium and low three kinds of basic rotating speeds.Why saying it is basic rotating speed, is because the devices such as controllable silicon can also be coordinated on the basis of basic rotating speed to carry out the adjustment (referring to the related description of Fig. 4 scheme) of rotating speed.

The concrete operation principle of Figure 14 is as follows:

When electric motor starting, S1, S3 can be disconnected, S2, S4 are closed, now within a half period of alternating current, diode reverse is ended, and motor M T1 and resistive heating load RG1 is cascaded, within second half cycle of alternating current, diode D1 forward conduction, motor M T1 is directly connected to power supply, thus reduces starting current, starting power and start noise.

After electric motor starting, can be disconnected by S4, S3 closes, and now motor M T1 is directly connected to power supply, thus makes motor enter flat-out duty again.Because motor had had certain rotating speed before entering full power operation state, so reduce starting current, starting power and start noise.

When only needing motor to work with higher rotation speed separately, S1, S4 can be disconnected, S2 and S3 is closed.

Only need motor separately with when comparatively the slow-speed of revolution works, S1, S3, S4 can be disconnected, S2 is closed, now within a half period of alternating current, diode reverse is ended, motor M T1 power-off, within second half cycle of alternating current, diode D1 forward conduction, motor M T1 is directly connected to power supply, so motor M T1 is on average with half-power work (i.e. the comparatively slow-speed of revolution).

When needing motor with intermediate-speed operation, S1, S3 can be disconnected, S2, S4 are closed, now within a half period of alternating current, diode reverse is ended, and motor M T1 and resistive heating load RG1 is cascaded, within second half cycle of alternating current, diode D1 forward conduction, motor M T1 is directly connected to power supply, and motor mean power is in fair state.

Need resistive heating load RG1 and motor M T1 all full power operation time, S4 can be disconnected, S1, S2, S3 be closed, now resistive heating load RG1 and motor M T1 are directly connected with power supply.

When only needing the independent full power operation of resistive heating load RG1, S2 can be disconnected, be closed by S1, the desirable free position of S3, S4, now resistive heating load RG1 is directly connected with power supply, and motor M T1 quits work.

The beneficial effect of this preference is mainly:

1, this programme utilizes resistive heating load to obtain less rotating speed as reduction of speed resistance, realizes preferably stirring, cleaning and peeling function;

2, this programme utilizes resistive heating load effectively to reduce starting current as current-limiting resistance, and lifting motor functional reliability also reduces starting noise;

3, this programme well achieves motor and heats and works simultaneously, shortens function Production Time;

4, present solution provides the ultralow rotating speed control mode of a kind of motor, in pulping process, slurry is stirred at interval, makes temperature in cup more even, promotes temperature sensor thermometric accuracy;

5, present solution provides a kind of electrical motor gearshift control mode.

Ninth embodiment of the invention relates to a kind of soy bean milk making machine.Figure 15 is the solution principle block diagram of soy bean milk making machine.

This programme in prior art 1 pin of DB1 be connected in series an inductance L 1 between motor pin, this programme utilizes the energy storage characteristic of inductance, ripple copped wave Hybrid mode is fallen to motor branch switch S2, and then realize less rotating speed, the switching waveform after ripple copped wave Hybrid mode is fallen as shown in Figure 16 to motor branch switch S2.

Simultaneously due to the existence of inductance L 1, also make machine operation more steady, can starting current be reduced, reduce electric motor starting noise.

The beneficial effect of this preference is mainly:

1, this programme is fallen ripple copped wave Hybrid mode to switch S2 can be obtained less rotating speed by motor series inductance, realizes preferably stirring, cleaning and peeling function;

2, this programme utilizes resistive heating load RG2 effectively to reduce starting current as current-limiting resistance, and lifting motor functional reliability also reduces starting noise;

3, present solution provides the ultralow rotating speed control mode of a kind of motor, in pulping process, slurry is stirred at interval, makes temperature in cup more even, promotes temperature sensor thermometric accuracy;

4, this programme realizes simple, and cost is low.

To sum up, technical problem to be solved by this invention is: provide a kind of motor wide fast regulation technology, makes motor speed adjustable range meet the demands such as pulverizing, stirring, cleaning and peeling, reduces motor starting currents simultaneously and start noise.

Beneficial effect mainly contain following some:

1, the present invention utilizes resistive heating load to obtain less rotating speed as reduction of speed resistance, realizes preferably stirring, cleaning and peeling function;

2, the present invention utilizes resistive heating load effectively to reduce starting current as current-limiting resistance, and lifting motor functional reliability also reduces starting noise;

3, the invention provides the ultralow rotating speed control mode of a kind of motor, in pulping process, slurry is stirred at interval, makes temperature in cup more even, promotes temperature sensor thermometric accuracy;

4, the present invention well achieves motor and heats and works simultaneously, shortens function Production Time.

The power of the motor of existing soy bean milk making machine is between 150-300W, and its rated speed is between 9000-15000 turns.The rated power of heater is between 650W-1200W, and therefore, the resistance of resistive heating load is generally between 40 Ω-75 Ω.

For the power 1000W of rated voltage 220V, resistive heating load, sealed in by resistive heating load in motor branch road, carry out verification experimental verification, its data are as follows:

Rated motor rotating speed Copped wave angle 0ms Seal in resistive heating load Copped wave angle 5.8ms Seal in resistive heating load Copped wave angle 7.6ms Seal in resistive heating load Copped wave angle 8.5ms Seal in resistive heating load 15000 15097 13726 11254 9876 6420 5124 887 440 12500 12819 11620 8936 7562 4246 3356 903 568 9500 9674 8460 5936 4483 2257 1820 434 322

Can be verified by above-mentioned data, resistive heating load is sealed in motor branch road, it not only can carry out dividing potential drop in the process at electric motor starting, the counter electromotive force avoiding motor self to produce has an impact to whole circuit, meanwhile, in machine operation total power process, when namely its copped wave angle is 0ms, motor speed reduces 1000 turns than rated speed, and motor noise reduces a lot.

And for 12500 rotating motors, when carrying out control motor with copped wave angle for 7.6ms, its motor speed is 4246 turns, is being sealed in after in motor branch road by resistive heating load, with copped wave angle for 7.6ms carry out control motor time, motor speed is 3356 turns, achieve than controlling less rotating speed, at control machine operation 60s, it is pulverized for bean or pea, only skin of beancurd is destroyed, and can realize the function of skin of beancurd and cleaning preferably.

It should be noted that, in claims of the present invention and description, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element " being comprised " limited by statement, and be not precluded within process, method, article or the equipment comprising key element and also there is other identical element.In claims of this patent and description, certain behavior is performed according to certain key element if mentioned, then refer to the meaning at least performing the behavior according to this key element, which includes two kinds of situations: only perform the behavior according to this key element and perform the behavior according to this key element and other key element.

Although by referring to some of the preferred embodiment of the invention, to invention has been diagram and describing, but those of ordinary skill in the art should be understood that and can do various change to it in the form and details, and without departing from the spirit and scope of the present invention.

Claims (10)

1. a soy bean milk making machine, comprise cup and be arranged on the reducing mechanism in cup, described reducing mechanism is driven by motor, described cup is provided with heater, described heater is resistive heating load, it is characterized in that, described soy bean milk making machine comprises control circuit, described control circuit comprises motor branch road, resistive heating load and change-over switch system, and described motor branch road comprises motor;
Described change-over switch system is for controlling the connection status of described motor branch road and resistive heating load, and described change-over switch system at least comprises the first connection status and the second connection status;
Under the first connection status, described resistive heating load and described motor branch road are connected between input power the two poles of the earth;
Under the second connection status, described motor branch road is connected between input power two ends.
2. soy bean milk making machine according to claim 1, is characterized in that, described resistive heating load is a part of heating branch road;
Whether described control circuit also comprises gauge tap system, be at least connected between the two ends of described input power for controlling described heating branch road.
3. soy bean milk making machine according to claim 2, is characterized in that,
Described gauge tap system comprises controllable silicon and the first relay;
Described silicon controlled input is connected with the first end of described input power; Described silicon controlled output is connected with the movable contact of described first relay;
First stationary contact of described first relay is connected with the first end of described motor branch road; Second stationary contact of described first relay is connected with the first end of described heating branch road.
4. soy bean milk making machine according to claim 3, is characterized in that, described change-over switch system comprises the first switching device and second switch device;
Described first switching device is connected between described motor branch road and described heating branch road;
Described first switching device is in parallel with described second switch device with the combination that described heating branch road is formed.
5. soy bean milk making machine according to claim 3, is characterized in that, described change-over switch system comprises the 3rd switching device, and the 3rd switching device comprises a movable contact and two stationary contacts;
The movable contact of the 3rd switching device is connected with the second end of described motor branch road;
First stationary contact of the 3rd switching device is connected with the first end of described heating branch road;
Second stationary contact of the 3rd switching device is connected with the second end of described input power.
6. the soy bean milk making machine according to any one of claim 3 to 5, is characterized in that, the resistive heating load in described heating branch road is the first resistive heating load;
Described soy bean milk making machine also comprises the second resistive heating load; Described second resistive heating load is arranged in the head of described soy bean milk making machine, for the evaporation of condensed water in head and steam;
Described second resistive heating load is serially connected between described heating branch road and described change-over switch system.
7. the soy bean milk making machine according to any one of claim 3 to 5, is characterized in that, also comprises a diode;
The combination that described change-over switch system and described heating branch road are formed and described diodes in parallel.
8. soy bean milk making machine according to claim 2, is characterized in that, described change-over switch system comprises the 4th switching device;
Described heating branch road and the series connection of described motor branch road; Described 4th switching device is in parallel with described resistive heating load.
9. soy bean milk making machine according to claim 8, is characterized in that, also comprises the 5th switching device with described motor branch circuit parallel connection, and is connected on the 6th switching device between described heating branch road and power supply one end.
10. soy bean milk making machine according to claim 1, is characterized in that, the rated power of described resistive heating load is 650W-1500W.
CN201410837500.0A 2014-12-30 2014-12-30 A kind of soy bean milk making machine CN104825055B (en)

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Publication number Priority date Publication date Assignee Title
CN105024619A (en) * 2015-08-21 2015-11-04 广东新宝电器股份有限公司 Intelligent speed control system of food stirring processor
CN105911889A (en) * 2016-04-12 2016-08-31 广东美的厨房电器制造有限公司 Household electrical appliance and control method thereof
CN105935245A (en) * 2015-12-11 2016-09-14 九阳股份有限公司 Method for preparing highly-enriched soya-bean milk by utilizing household soybean milk machine
CN107665003A (en) * 2017-06-23 2018-02-06 浙江绍兴苏泊尔生活电器有限公司 The decision method and cooking machine of food boiling point in cooking machine
WO2019024190A1 (en) * 2017-08-04 2019-02-07 广东美的生活电器制造有限公司 Food processor and cooking control method and apparatus thereof
EP3706305A1 (en) * 2019-03-07 2020-09-09 Vorwerk & Co. Interholding GmbH Domestic appliance and method for operating such a domestic appliance

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CN105024619A (en) * 2015-08-21 2015-11-04 广东新宝电器股份有限公司 Intelligent speed control system of food stirring processor
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CN105911889A (en) * 2016-04-12 2016-08-31 广东美的厨房电器制造有限公司 Household electrical appliance and control method thereof
CN107665003A (en) * 2017-06-23 2018-02-06 浙江绍兴苏泊尔生活电器有限公司 The decision method and cooking machine of food boiling point in cooking machine
WO2019024190A1 (en) * 2017-08-04 2019-02-07 广东美的生活电器制造有限公司 Food processor and cooking control method and apparatus thereof
EP3706305A1 (en) * 2019-03-07 2020-09-09 Vorwerk & Co. Interholding GmbH Domestic appliance and method for operating such a domestic appliance

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