CN1098193A - The repositioning method of ice making vessel - Google Patents

Abstract

The repositioning method of ice making vessel, deicing after signal the takes place when detecting signal when storage is completely iced the back takes place or deices work, allowing motor (15) not be subjected to time control ground is not the direction rotation that resets of ice making vessel (2) in the opposite direction, according to the output signal level variation of switch (14) and the combination of the timing done state in the controller (52) after this, detect the output signal occurrence positions of switch (14), reversing time from this position restriction motor (15), make motor (15) establish shortly as far as possible conduction time under the stall state, to prolong the service life of motor (15).

Description

The repositioning method of ice making vessel

The device that the present invention relates to drive the refrigerator ice-making vessel is after the work of inspection ice or make the method for ice making vessel involution original position after deicing work.

The patent applicant had proposed Japanese patent application " drive units of ice making vessel " as basis of the present invention on February 26th, 93, so earlier it is elaborated, understand fully its technical task.

Fig. 1 and Fig. 2 represent the general structure of ice making vessel drive unit 1.In order to make the counter-rotating of ice making vessel the time make 3 swings of inspection ice bar, ice making vessel drive unit is installed on the indoor storage ice of the refrigerator ice-making container.

Ice making vessel 2 are open-type vessel above the cuboid, one side of one group of opposite side connects the drive division 4 of ice making vessel drive unit 1, the opposing party is supported for respect to the driven shaft 5 that is fixed on the refrigerator frame 6 and is turning state, during upset when upwards state becomes downward state, that is to say, touch being contained in turning circle one end when for example being fixed on bonding jumper 7 on the frame 6, throw off and drop down onto in the storage ice container of below because of torsional deformation makes inner ice.

Above-mentioned inspection ice bar 3 is contained on the inspection ice axle 10 of separate type case 8,9 one sides that are positioned at ice maker ware drive unit 1, by turn round necessary angle from horizontal level, for example turning round the maximum actuation angle is 37 degree, bump with ice in the ice storing cabin and to connect, detect storage and completely ice state, or do not bump and connect, detect storage ice quantity not sufficient.

Fig. 3 to Fig. 8 represents to be loaded on the structure of cam shaft gear 11, inspection ice control lever 12, switch drive bar 13 and switch 14 of case 8,9 inside and the setting that drives their d.c. motor 15 etc.Except that Fig. 3, as shown in Figure 8, motor 15 is fixed in the inside of case 8 with printed substrate 37, and the worm screw 16 by deceleration usefulness, worm gear 17, gear 18,19 reach cam shaft gear 11 with its rotation.

As Fig. 4, Fig. 6, shown in Figure 7, cam shaft gear 11, rely on it is output shaft 20 supports of one, the revolution of the bearing portions of case 8,9 freely relatively, the profile of one side forms the 1st cam 21, raised line on the discontinuous circumference of opposite side forms the 2nd cam 22, in addition, and the projection 24 that is formed for limiting the block 23 of cam shaft gear 11 anglecs of rotation again and is used to drive securing rod 25.In addition, the part of output shaft 20 is given prominence in the outside of case 8, and ledge is an ellipticity drive division 4.

Block 23, be used for limiting as shown in Figure 6 the anglec of rotation of cam shaft gear 11, it is corresponding to formed scotch 26,27 on the case 8, except making ice making vessel 2, the turning circle of cam shaft gear 11, output shaft 20 is limited to roughly in the 180 degree scopes.In addition, as shown in Figure 4, formed stage portion 47 is corresponding on the boss portion of securing rod 25 with the claw of its front end part and worm screw 16, by their overlap joint, even under the "on" position of motor 15, also can make under motor 15 and the worm screw Final 16 stop.

As Fig. 3, shown in Figure 6, above-mentioned the 1st cam 21 bumps with the cam follower 28 of outline portion and inspection ice control lever 12 and to connect, and forms displacement admissible region 29 with sunk part.As shown in Figure 7, the 2nd cam 22, bump with the cam follower 30 of its periphery wall and switch drive bar 13 and to connect, discontinuous part form the displacement admissible region 31 corresponding with the reference position of cam shaft gear 11, with corresponding displacement admissible region 32 of above-mentioned displacement admissible region 29 and the displacement admissible region 33 corresponding with the rotation terminator of cam shaft gear 11.

As shown in Figure 8, above-mentioned switch drive bar 13 and securing rod 25, all be supported for can be relatively with case 8 for bar axle 34 revolutions of one freely, because of the effect of extension spring set between them 35, mutually to the past different direction of rotation that becomes.The fore-end of switch drive bar 13 is equipped with for example permanent magnet 36, and the switch 14 of the Hall IC of being adorned on the magnetic line of force that makes this permanent magnet 36 and the printed panel 37 etc. is corresponding.

As shown in Figure 3, inspection ice control lever 12, the one end is supported for relatively and turns round freely with the bar axle 39 of case 8 for one, position in elliptical aperture 40 intersects with output shaft 20, front end one side part directly cooperates with inspection ice axle 10 or as shown in this embodiment, slide block 41 is cooperated with inspection ice axle 10 as intermediary.It is slide block 41, the inside that is embedded in formed sliding guide groove 42 on the inspection ice control lever 12 also can be moved within it, spring 43 between the spring base 45 of spring base 44 by slide block 41 and inspection ice control lever 12 forms one, the front end of slide block with 2 fitting projections 46 with cooperating for the engagement tabs 48 of one with inspection ice spools 10.

As shown in Figure 5, inspection ice axle 10 because of its lower portion is hung over the effect of the extension spring 49 on the case 8, always leans on to clockwise direction in Fig. 5, the result, and inspection ice bar 3 always leans on to counter clockwise direction in Fig. 2.And inspection ice control lever 12, because of the effect of above-mentioned extension spring 49, in Fig. 3, always be subjected to clockwise power, be subjected to that promptly cam follower 28 is bumped and be connected to the power effect of the direction of the 1st cam 21 profiles.

Inspection ice control lever 12, with the corresponding position of switch drive bar 13 on have displacement blocking portion 50.Allow the part of this blocking portion and switch drive bar 13 for example stop body 51 overlap joints with its displacement together, limit the revolution range of switch drive bar 13 for one.

Fig. 9 represents the control system of motor 15.Controller 52, among each embodiment that will illustrate later, its inside is equipped with initial setting in advance, latch-release is handled, the program of groundwork, except that various command signals, also the output signal of sending here with switch 14 etc. is given drive circuit 53 work orders as input.Drive circuit 53, in inspection ice work with when deicing work, with the torque of necessity motor 15 is rotated towards positive veer, and during the work that resets after examining ice work and deicing work, allow the reversing the current circulation of when just changeing electric current, motor 15 is rotated towards reverse direction with little torque.

Figure 10 illustrates an example of drive circuit 53.Drive circuit 53 is the transistor driving mode, between DC12 volt power supply terminal 54, serial connection transistor Tr 1, motor 15 and transistor Tr 4, simultaneously similarly be connected in series transistor Tr 2, resistor R, motor 15 and transistor Tr 3 again between power supply terminal 54, controls such as the base collector of these transistor Tr 1, Tr2, Tr3, Tr4 or Base-Emitter are with connecting resistor R between the input ₁, R ₂, R ₃, R ₄, R ₅, R ₆, and load onto the diode D that is used to absorb surge current as required ₁, D ₂, D ₃, D ₄And constitute.

When the output of controller 52 makes transistor Tr 4 conductings, the base potential of transistor Tr 1 just descends, and 1 of transistor Tr becomes conducting state, so motor 15 is clockwise direction (CW direction) rotation towards positive veer.At this moment, because of transistor Tr 3 is a cut-off state, transistor Tr 2 is not a conducting state.

When the output of controller 52 makes transistor Tr 3 conductings, then transistor Tr 2 conductings, through the resistor R dividing potential drop, the voltage lower than supply voltage is added between the terminal of motor 15, therefore motor 15 reverses, and output shaft 20 is promptly rotated to counter clockwise direction (CCW direction) towards Return-ing direction.Thereby the torque of motor is controlled lowly when just changeing when reversing.

Figure 11 represents a succession of action of ice making vessel drive unit 1.According to from the periodicity action command of working procedure or from the forced act instruction of outside, controller 52 with the positive veer CD-ROM drive motor 15 in necessary torque edge, makes cam shaft gear 11 slowly rotation in the counterclockwise direction in Fig. 3, Fig. 6-Fig. 8 by drive circuit 53.If cam shaft gear 11 rotations 170 degree required times were about for 10 seconds.

Because cam shaft gear 11 and with its 20 be the drive division 4 of one in figure such as Fig. 3 towards counterclockwise rotating, ice making vessel 2 slowly turn round along reverse directions.Meanwhile, the 1st cam 21 rotates in the same direction, the cam follower 28 of inspection ice control lever 12 is dropped into the depression admissible region 29 that promptly is shifted because of the elastic force effect of extension spring 49, therefore inspection ice control lever 12 be that the center is turned round toward the clockwise direction with bar axle 39 in Fig. 3, by slide block 41 inspection ice axle 10 clockwise direction in Fig. 5 is turned round.The rotation of this inspection ice axle 10 make inspection ice bar 3 in Fig. 2 counterclockwise to revolution.

Storage ice amount is zero or stores when icing quantity not sufficient that inspection portion bar 3 is in the clear state in storage ice container, and revolution reaches the maximum actuation angle.Therefore, control lever 12 and the action interlock of examining ice bar 3 are iced in inspection, are displaced to the darker position of the admissible region 29 that is shifted, and as Fig. 7, shown in Figure 8, make displacement blocking portion 50 stop the direction of sheet 51 to move towards approaching displacement, thus the revolution of prevention switch drive bar 13.

When storage ice amount was sufficient, inspection ice bar 3 stopped in the way after brushing up against ice in the storage ice container, and therefore inspection ice axle 10 detects more than the level at the full ice of storage and just do not rotate.At this moment, cam follower 28 is not dropped into displacement admissible region 29, regulates for floating, and therefore examines ice control lever 12 and its interlock, is not displaced to the position that makes displacement blocking portion 50 be abutted against displacement prevention sheet 51.Therefore, as shown in Figure 7, switch drive bar 13 is for turning round.

Cam shaft gear 11 goes in the scopes of 85 degree from 55 degree, inspection ice control lever 12 with the part of its cam follower 28 by displacement admissible region 29, because join with the profile of the 1st cam 21 and reset.After this, inspection ice control lever 12 joins by the circular-arc outline portion of cam follower 28 and the 1st cam 21, thereby is set as not turn state.

On the other hand, displacement admissible region 31,33 degree-47 that form-12 degree-11 degree scopes on the part of the 2nd cam 22 are spent the displacement admissible region 33 of displacement admissible region 32,170 degree-190 degree scopes of scopes, therefore when the part of the cam follower 30 of switch drive bar 13 and these displacement admissible regions at once, switch drive bar 13 makes permanent magnet towards the direction displacement that departs from switch 14.

Switch 14 produces the output of " H " level when departing from permanent magnet, 36 opposed with permanent magnet, near the time then become " L " level signal.So the output signal of switch 14 is corresponding with displacement admissible region 31,32,33, becomes signals in situ, the inspection ice signal of " H " level and deice signal, input controller 52.Like this, switch 14 detects storage with the action of inspection ice and completely ices state in the two ends of ice making vessel 2 turning circles and turning circle.In the case, when switch 14 sent " H " level output signal, switch 14 was a conducting state, and the output signal of switch 14 is when being " L " state, and switch 14 is an off-state.Hereinafter with in the flow chart of mentioning, it is the conducting state or the off-state of expression switch 14 that switch conduction, switch disconnect.

As mentioned above, when controller 52 is accepted action command, constantly make the output of motor 15 towards the positive direction rotation.In this positive veer running, when the output signal of switch 14 became " H " level by " L " level, when inspection ice signal promptly taking place or deicing signal, controller 52 reversed motor 15 according to the output signal of switch 14 in the whole reverse time.This reverse time is decided to be and only makes cam shaft gear 11 change [170 degree+rich angle], for example sets into about 16 seconds.

Controller 52 reverses motor 15, through after the above-mentioned reverse time in 16 seconds motor 15 is stopped, and gets back to-1 degree initial point, then, only with very short moment for example so that motor 15 is just being changeed, allow cam shaft gear 11 get back to the ice making position.This is operating as latch-release and handles, allow the block 23 of cam shaft gear 11 reliably amplexiform with scotch 26, set like this be in back, machinery location with 0.2 second blink motor 15 just being changeed, finish homing action not existing drive system stress promptly not have under the driving force active state.

When detecting storage ice quantity not sufficient by the action of inspection ice, 12 displacements of inspection ice control lever become big, and its displacement blocking portion 50 stops sheet 51 near the displacement of switch drive bar 13.Thereby be rotated in the forward the initial stage, switch drive bar 13 relies on displacement admissible regions 31 and is shifted, become " L " level as the signals in situ of " H " level output of switch 14 after, switch drive bar 13 will fall into next displacement admissible region 32.

Yet because the displacement of switch drive bar 13 stops sheet 51 to brush up against the displacement blocking portion 50 of the inspection ice control lever 12 of displaced condition, switch drive sheet bar 13 does not fall into displacement admissible region 32.Therefore, during storage ice quantity not sufficient, the output of switch 14 keeps " L " level constant, does not export the inspection ice signal of " H " level.

Therefore, controller 52 deicing between the signal of acquisition " H " level output signal, makes motor 15 rotations, allows cam shaft gear 11 rotate to the position that deices of about 170 degree.So, 2 upsets of ice making vessel, before soon overturning fully, promptly the end at turning circle brushes up against bonding jumper 7, produces twist distortion, and inner ice is thrown off, and falls into storage and ices container.

When forwarding to, cam shaft gear 11 deices the position, then switch drive bar 13 falls into displacement admissible region 33, the signal of switch 14 becomes " H " level by " L " level, obtaining to deice signal constantly, controller 52 allows motor 15 reverse in the reverse time about above-mentioned 16 seconds, makes cam shaft gear 11 get back to the initial point of-1 degree, the block 23 of cam shaft gear 11 brushes up against scotch 26 and stops, just change by instantaneous, get back to the ice making position of 0 degree, the stress of drive system is eliminated.

When this reverses, because of with resistor R restriction electric current by motor 15, the output torque of motor 15 is compared when just changeing, and can be suppressed to about 1/2 to 1/4.Therefore can guarantee return action lighter when just changeing, and not need necessary above power effect, can protect drive system.In addition, in this reverse work, also can examine ice work, when becoming the full ice of storage by deicing, then send inspection ice signal, the inspection ice signal of this moment and the reverse work of motor 15 are irrelevant.

When the action of inspection ice takes place, when storage ice amount expires under the state for storage, the anglec of rotation of inspection ice bar 3 is bumped to connect and is diminished because of 3 pairs of ice of inspection ice bar, therefore, interlock therewith, inspection ice control lever 12 detects at the full ice of storage and does not fall into displacement admissible region 29 in the horizontal extent substantially, do not allow displacement blocking portion 50 move to switch drive bar 13 on displacement stop sheet 51 position contacting.

So in the rotating range that 33 degree-47 of cam shaft gear 11 are spent, the cam follower 30 of switch drive bar 13 falls into mobile admissible region 32, makes permanent magnet 36 from becoming not opposed position with switch 14 opposed positions.Therefore, the inspection ice signal of switch 14 output " H " level, notification controller 52 is completely iced state for storage.

So, the signal that controller 52 detects from " L " level of switch 14 to " H " level changes, promptly obtain corresponding storage and completely ice the inspection ice signal of state, motor 15 was reversed in the reverse time about above-mentioned about 16 seconds, same as described above, utilize the block 23 and the bonding relation of scotch 26 that the cam of camshaft 11 is stopped, making it to do 0.2 second the instantaneous of kind then just changes, and gets back to 0 degree ice making position.

At this moment, cam shaft gear 11 resets the necessary anglec of rotation for towards about reverse direction 34 degree, and is more much smaller than the above-mentioned 171 degree left and right sides when deicing work.Therefore, the rotation halted state of motor 15 is the major part that the stall state has accounted for the time of reverse, and motor 15 is in lasting "on" position, because the electric current when reversing suppressed by resistor R, so to the essentially no bad influence of drive system.

Also have, adding has release mechanism, and the action of inspection ice control lever 12 is iced on the axle 10 to inspection by slide block 41 and sliding guide groove 43 indirect transfer.Therefore, even external force is added on the inspection ice bar 3, inspection ice axle 10 is in reverse driving condition turning down, and this power also can be followed the deflection of the spring 43 of slide block 41 displacements to absorb.Therefore, pass less than on the inspection ice control lever 12, thereby can prevent inspection to ice the damage of control lever 12 and relevant gear thereof etc.

Cam shaft gear 11 is in positive veer rotary course, even because of abnormal conditions revolved 170 the degree more than also cannot stop, because the projection 24 at 180 degree place cam shaft gears 11 brushes up against securing rod 25, it is counterclockwise rotated in Fig. 8, securing rod 25, as shown in Figure 4, its fore-end brushes up against the stage portion 47 of gear on worm 16, under "on" position, motor 15 is forced stop to be the stall state.So cam shaft gear 10 can not turn over more than 180 degree, with the ice making vessel 2 and the inner body of its connection, can not suffer very big power yet and damages.Again because of worm gear 17 is that at a high speed rotation, torque are little, can make it to force to stop with less power by the combining of securing rod 25 and stage portion 47.

In the prior-art devices, the reverse time of motor 15 is made as 16 seconds, and the homing action after deicing the homing action after the action and examining the ice action all is set at this reverse time equally.Consider the change etc. of inconsistent, driving voltage of the rotary speed characteristic of d.c. motor 15, for guaranteeing the reliability of return action, must there be rich amount this reverse time, establishes some morely.When the reverse time establishes manyly, self check ice begins to reverse constantly, after cam shaft gear 11 reverses and returns initial points, motor 15 is in and long-time continues energising and non-rotary stall state, again because deice the back when returning initial point, also because of there being the slack time that motor is switched on, so, the overlong time of stall state.

The objective of the invention is will be for resetting the ice making vessel to allow in the process that motor 15 reverses, and do not allow non-rotary state is that the stall state continues for a long time under the energising situation, prevents the lost of life of the motor 15 that this operating condition causes.

Based on above-mentioned purpose, the present invention is by deicing after signal takes place when the inspection ice signal of storage when completely icing the back takes place or deice action, motor 15 is not directly promptly rotated towards the direction that resets of ice making vessel 2 towards reverse direction with not being subjected to time control, by the output signal level variation of combination switch 14 after this and the done state of the timing in the controller 52, detect the output signal generating means of switch 14, according to the reverse time of this position restriction motor 15, thereby shorten the conduction time of motor 15 under the stall state as much as possible.

Fig. 1 is the vertical view of whole ice making vessel drive unit;

Fig. 2 is the side view of whole ice making vessel drive unit;

Fig. 3 is the amplification rearview of the broken section of ice making vessel drive unit key component;

Fig. 4 is the horizontal amplification profile of being looked below the cam shaft gear part;

Fig. 5 is the amplification profile of inspection ice axle drive part;

Fig. 6 is the enlarged front view of the 1st cam of cam shaft gear;

Fig. 7 is the horizontal amplification profile of the 2nd cam of cam shaft gear;

Fig. 8 is the amplification plan view corresponding to the corresponding relation of the switch drive bar of cam shaft gear and securing rod;

Fig. 9 is the block diagram of motor control system;

Figure 10 is the circuit diagram of motor drive circuit;

Sequential chart when Figure 11 is work;

Sequential chart when Figure 12 is embodiment 1 work;

Figure 13 is the flow chart of embodiment 1 initial setting;

Figure 14 is that embodiment 1 stall is removed the flow chart of handling;

Figure 15 is the flow chart of embodiment 1 groundwork;

Sequential chart when Figure 16 is embodiment 2 work;

Figure 17 is the flow chart of embodiment 2 groundworks;

Figure 18 is the amplification profile of the 2nd cam used among the embodiment 2;

Sequential chart when Figure 19 is embodiment 3 work;

Figure 20 is the amplification profile of the 2nd cam of embodiment 3;

Figure 21 is the flow chart of embodiment 3 initial settings;

Figure 22 is the flow chart of embodiment 3 groundworks;

Figure 23 is the flow chart that the original position of embodiment 3 detects processing;

Sequential chart when Figure 24 is embodiment 4 work;

Figure 25 is the amplification plan view of the 1st cam and auxiliary cam;

Figure 26 is the flow chart of embodiment 4 groundworks;

Symbol is respectively following implication among the figure.1: ice making vessel drive unit, 2: the ice making vessel, 3: inspection ice bar, 4: drive division, 5: driven shaft, 6: frame, 7: bonding jumper, 8: the separate type case, 9: the separate type case, 10: inspection ice axle, 11: cam shaft gear, 12: inspection ice control lever, 13: the switch drive bar, 14: switch, 15: motor, 16: worm screw, 17: worm gear, 18: gear, 19: gear, 20: output shaft, 21: the 1 cams, 22: the 2 cams, 23: block, 24: projection, 25: securing rod, 26: scotch, 27: scotch, 28: cam follower, 29: the displacement admissible region, 30: cam follower, 31: the displacement admissible region, 32: the displacement admissible region, 33: the displacement admissible region, 34: the bar axle, 35: extension spring, 36: permanent magnet, 37: printed substrate, 38: the displacement admissible region, 39: the bar axle, 40: elliptical aperture, 41: slide block, 42: sliding guide groove, 43: spring, 44: spring base, 45: spring base, 46: fitting projection, 47: stage portion, 48: engagement tabs, 49: extension spring, 50: the displacement blocking portion, 51: displacement stops sheet, 52: controller, 53: drive circuit, 54: power supply terminal, 55: the displacement admissible region, 60: auxiliary cam, 61: pin, 62: slotted hole.

[embodiment 1]

Embodiment 1 is the reversal procedures example of output shaft 20, output shaft 20 at the output signal level of switch 14 from the no time limit ground reverse during become " H " level of initial " L " level, when output signal level changes, even because of deicing when storing the full output inspection of ice amount storage ice signal, although perhaps deice, storage ice amount during still for not enough state or inspection ice when storing full ice state and send signals in situ, the only necessary timing of rotation takes place constantly from this signal, the block 23 of cam shaft gear 11 is bumped with scotch 26 connect, output shaft 20 stops.

Figure 12 represents among this embodiment 1 that the Hall IC output signal as switch 14 is 1. 2. 3. 4. 5. a corresponding time relationship of signals in situ, inspection ice signal and the occurrence positions that deices signal and timing.And 5. 4. 3. 2. 1. timing wait corresponding with each interval rotation time necessary.Figure 13, Figure 14 and Figure 15 represent that respectively the control content of controller 52 is that initial setting flow chart, stall are removed process chart, groundwork flow chart.

The flow process of Figure 13 initial setting flow chart is carried out in initial operational phase, is used for output shaft 20 is located at the ice making position that the anglec of rotation is 0 degree.Direction of rotation is only set (CCW) direction counterclockwise for this reason.Otherwise, when water adds the ice making vessel, might directly supply with storage ice container with the state of water.

Step 1 is at first set the power connection state, begins to carry out the initial setting flow process, and then in the step 2, Yin Mada 15 is to rotation counterclockwise, and output shaft 20 beginnings are to rotation counterclockwise.In the step 3, be conducting state if switch conduction is a switch 14, then step 4 the time set of timer be timing 1.+α (affluence) time.Here, as condition, set following magnitude relationship.

Timing 1.+α time＞3.

Timing 1.+α time＞5.

In the step 5, when regularly finishing preceding switch 14, because of the switch conduction in the step 3 depends on inspection ice signal, so repeating step 4,5 for off-state.But switch keeps not off-state in step 5, in step 6 timing 1.+the α time, when regularly finishing, can confirm that the switch conduction of step 3 is caused by signals in situ.So, controller 52 stops 1 second kind in step 7 after, carry out stall in step 8 and remove and handle, and in next procedure 9, finish the initial setting flow process.

Figure 14 represents the flow process that the stall releasing of above-mentioned steps 8 is handled.As previously mentioned, this stall is removed and handled is for by making output shaft 20 eliminate the stress of drive system from the ice making position that the origin position of-1 degree is got back to 0 degree, after step 1 beginning stall releasing processing, make motor 15 towards just changeing the rotation of (CW) direction in step 2, meanwhile, step 3 is provided with 0 on timer, the just commentaries on classics time in 2 seconds, then confirm that by step 4 timing finishes, step 5 stops motor 15, to step 6 process ends.Therefore, because output shaft 20 is got back to 0 degree position, ice making vessel 2 become level, are made as ice making.

Figure 15 represents the groundwork program.Behind the finishing ice-making of step 1 or prepare done state down through some cycles after the time, perhaps according to imperative instruction from the outside, motor 15 rotates towards positive veer in step 2, by confirm the disconnection of switch 14 with step 3, confirmed the trailing edge of signals in situ, then with step 4 set timing 2.+3.+the α time detects and ices signal.

In the step 5, switch 14 is when disconnecting the time, if step 6 confirms through timing, does not then occur inspection ice signal in this timing, promptly confirms as storage ice quantity not sufficient state, so motor 15 continues to deice work towards positive veer rotation.

If switch 14 conductings in the step 7, even deice signal, after then next step 8 allows motor 15 stop for 1 second, make output shaft 20 towards the i.e. rotation counterclockwise of Return-ing direction in step 9, confirm the trailing edge that deices signal of switch conduction again by step 10, then in step 11, confirm the rising edge position of inspection ice signal or signals in situ by switch conduction.On the time point of this step 11, it is that inspection ice signal causes can not specifying the switch conduction state or signals in situ causes.

For can be corresponding with arbitrary signal with step 12, set when inspection ice signal takes place, get back to the necessary timing of-1 degree original position 3.+2.+1.+the α time, connect down when finishing with step 13 affirmation timing, output shaft 20 must go to origin position.In addition, when the switch conduction of step 10 is caused by signals in situ, be provided with rich amount ground the time be decided to be timing 3.+2.+the α time, motor 15 correspondences are the stall state under the energising situation during this period of time.After step 14 stopped for 1 second, after step 15 is done above-mentioned stall releasing processing, supply water to the ice making vessel by step 16, more then in step 17 power cut-off.

Because in the above-mentioned steps 5, timing 2.+3.+the α time is when finishing preceding switch 14 conductings, can confirm as storage and completely ice state, after step 18 motor 15 stops 1 second kind, rotate towards counter clockwise direction in step 19, confirm that with step 20 switch that inspection ice signal causes disconnects again, confirm the switch conduction that signals in situ causes with step 21, then in step 22, set timing 1.+the α time, with step 23 confirm timing 1.+end of α time, after the stall that stops 1 second and step 25 of step 24 is removed, become the SBR of step 26, preparation inspection is after this iced or is deiced.

According to this embodiment, the anglec of rotation corresponding with the time in limited time of output shaft is enough to reach 48 degree of the maximum to-1 degree from 47 degree, therefore, (timing 1.+2.+α time) has rich amount even allow its necessary reverse time in limited time, and be also much of that with about 5 seconds.Therefore motor can be shortened being set under the "on" position not, the so useless action of energising stall state can be shortened towards time of rotation counterclockwise.

[embodiment 2]

As shown in figure 16, present embodiment is to ice signal and deice the example of forcing to take place identification signal between the signal in inspection with the 2nd cam 22, switch 14.Figure 17 represents an example of the 2nd cam 22.Between displacement admissible region 32 and displacement admissible region 33, form the displacement admissible region 38 of 70 degree-84 degree scopes.Because of the cam follower 30 of switch drive bar 13 falls into this displacement admissible region 38, as the Hall IC of switch 14, be conducting state, send the identification signal of " H " level.

Also can utilize initial setting flow process identical and stall to remove handling process under the present embodiment situation with embodiment 1.Set following condition at this.

Timing 1.+α time＞3.

Timing 1.+α time＞5.

Timing 1.+α time＞7.

Figure 18 represents the groundwork flow chart.Passing through some cycles after the time or behind the finishing ice-making of step 1 or under the preparation done state according to imperative instruction from the outside, motor 15 rotates towards positive veer in step 2, confirm the trailing edge of signals in situ in the step 3 by the conducting of confirming switch 14, then with step 4 set timing 2.+3.+the α time, be used to detect and ice signal.In the step 5, be switch 14 when non-conduction,, then can confirm to occur in this timing inspection ice signal and be storage ice quantity not sufficient state that therefore, motor 15 continues towards positive veer rotation if confirm the timing process through step 6.

Then according to the conducting of the switch in the step 7 14, the disconnection of switch 14 in the step 8, confirm the existence of identification signal, if switch 14 is conducting in the step 9, even send and deice signal, after then finishing to deice, after in step 10, making motor 15 stop for 1 second,, make output shaft 20 towards the i.e. rotation counterclockwise of Return-ing direction with the direction of rotation of step 11 conversion motor 15.

Switch by step 12 disconnects the trailing edge of confirming to deice signal, after then the switch of the switch conduction by step 13, step 14 disconnects identification signal is skipped as invalid signals, with step 15 set timing 4.+3.+the α time skips so that signal is iced in inspection.

According to this timing 4.+3.+setting of α time, motor 15 should make output shaft 20 get back to the angle that takes place near signals in situ, ignores this to fix time 4.+3.+inspection ice signal in the α time takes place.Step 16 through timing 4.+3.+α is after the time, according to the switch conduction of step 17, detects signals in situ rising edge position.Then with step 18 set get back to the necessary timing of original position 1.+the α time.

When confirming in the step 19 regularly to finish, output shaft 20 must forward origin position to.Then after step 20 stopped for 1 second, carry out above-mentioned stall by step 21 and remove processing, take out the ice making vessel by step 22 then and supply water power cut-off in the step 23.

In the above-mentioned steps 5 timing 2.+3.+the α effluxion before if switch 14 then can confirm to store full ice state for conducting, therefore after step 24 motor 15 stopped for 1 second, rotate towards counter clockwise direction in step 25, step 26 is confirmed the disconnection of the switch 14 that caused by inspection ice signal, after the switch conduction that step 27 is confirmed to be caused by signals in situ, by step 28 set timing 1.+the α time, again by step 29 confirm timing 1.+end of α time, remove processing through the stall that stops a second and step 31 in the step 30, enter the SBR of step 32, prepare later inspection ice or deice.

Like this, controller 52, if in the rotary course that resets, detect identification signal, then set timing 4.+3.+α, this timing is through the rising edge variation of the initial output signal of basis later, detect signals in situ, from this detect constantly through timing 1.+the α time for example after 1.5 seconds motor 15 stop.So with above-mentioned the same, cam shaft gear 11 and output shaft 20 can be got back to original position reliably, can make be suppressed to bottom line the conduction time of the motor 15 under block 23 and the scotch 26 overlap joint states, for example below 1 second.

[embodiment 3]

As shown in figure 19, embodiment 3 is examples of the short identification signal of time of origin width between signal and the inspection ice signal in position.At this, establish following condition:

Timing 1.+α time＞5.

Timing 1.+α time＞7.

Timing 2.+α time＞4.

Timing 2.+α time＞6.

Timing 3.+α time＞5.

Timing 3.+α time＞7.

Figure 20 represents to be used for the structure of the 2nd cam 22 of this purpose.For identification signal takes place, the 2nd cam 22 has displacement admissible region 55 between displacement admissible region 31 and displacement admissible region 32.

Figure 21 represents the initial setting work among this embodiment 3.Because of after the power connection program of step 1 begins, motor 15 and output shaft 20 are towards rotation counterclockwise in the step 2, in the step 3, by confirming the conducting state of switch 14, in these signals which confirms to deice the location of signal, inspection ice signal, identification signal or signals in situ, be but still can not specify.

In the step 4 with timer 1 set timing 3.+the α time, and with timer 2 set timing 1.+the α time.In the step 5 if before the timing of timer 1 or timer 2 finishes, switch 14 is an off-state, the rotation starting position that just can infer output shaft 20 is the trailing edge that deices signal, inspection ice signal or identification signal, then step 6 for it is confirmed to set timing 2.+the α time, confirm to confirm in step 8 that then switch 14 is conducting before this timing end in step 7, the switch switching that then can specify in the step 3,5 is to be caused by identification signal.

But the preceding stop timing of switch 14 conductings then returns step 3 during the time in the step 7, for specifying identification signal, repeats above step.If identification signal specified, just in next step 9, set timing 1.+the α time, confirm that with step 10 this timing finishes, after step 11 stopped for 1 second, the stall that carries out step 12 was removed and is handled, and finishes initial setting work in step 13.

On the other hand, switch 14 disconnects as yet in step 5, the timing of timer 1 finishes in the step 14, switch 14 also will turn back to the front of step 3 when disconnecting in the step 15, repeats above step again.Though in the time of predicting the timing of process timer 2 in the step 16, output shaft 20 is in original position, also need to confirm.And this moment, can predict in the ice making vessel 2 ice less than, forward ice making vessel 2 add water.

So next procedure 17 stops the spinning movement of motor 15 in the necessary time of ice making, or the like the water in the ice making vessel 2 become ice.The output shaft 20 that is connected on thereafter with prevention is just turning in the journey, and the water in the ice making vessel 2 is examined ice work and deiced work under the state that do not freeze as yet.

Because if through after the necessary ice making time in the step 17, motor can rotate toward the clockwise direction, so will carry out making output shaft 20 change the step that 1 circle slightly almost guarantees to be parked in original position toward the clockwise direction near the signal nidus in position.Promptly by confirm the disconnection of switch 14 with the disconnection of step 18 affirmation switch 14, with the conducting of step 19 affirmation switch 14, with step 20, the position of rotation of output shaft 20 is located at the place of pressing close to of icing signal with identification signal and inspection, after step 21 is stopped a second, return the work that step 2 repeats initial setting again.By the work of above initial setting, output shaft 20 is set in the ice making position.

Figure 22 represents the order of groundwork.Finishing ice-making state or preparation done state from step 1, deice in order to examine ice, rotate toward the clockwise direction in step 2 motor 15, then in step 3, confirm the trailing edge of signals in situ according to the disconnection of switch 14, according to the switching of switch 14 identification signal is crossed as garbage signal in the step 4,5, set in the step 6 when crossing timing 4.+5.+the α time.

Because switch 14 is as yet under the situation of conducting in the step 7, when timing finishes in the step 8, storage ice quantity not sufficient, output shaft 20 makes the counter-rotating of ice making vessel and enters and deice action.Step 9 is confirmed to deice signal according to the conducting shape of switch 14, and after step 10 stopped for 1 second, the original position of carrying out step 11 detected the water supply of processing and step 12, finishes a series of work with step 13.

This timing 4.+5.+step 7 of α time before finishing in, when switch 14 is conducting state, carry out after original position detects processing in step 14, in step 15 action of supplying water, step 16 enters preparation.

Figure 23 represents that original position detects a succession of order of work of treatment.After step 1 beginning, motor 15 and output shaft 20 are towards rotation counterclockwise in the step 2, after switch 14 disconnects in the step 3, which of these signals can confirm to deice signal, examine the location of icing signal, identification signal or signals in situ by the conducting state of confirming switch 14 in the step 4, be but still can not specify.

But, when timing has finished before switch 14 conductings in the step 8, get back to step 4, in order to specify identification signal, repeat above step.After if identification signal specified, then step 10 set timing 1.+the α time, then confirm the end of this timing with step 11, after step 12 stopped for 1 second, the stall that carries out step 13 was removed and is handled, and finishes initial setting with step 14 again.

On the other hand, under the state that switch in the step 6 14 does not disconnect as yet, the timing of timer 1 finishes in the step 15, when switch 14 is for disconnection in the step 16, also turns back to before the step 4, repeats above step.Then the timing of timer 2 has been judged as unusually also through out-of-date in the step 17, stops motor with step 18.Unusually after discerning processing in the step 19, finish original position in step 20 and detect processing.At this moment, because of discerning the origin-location reliably, can shorten the stall state with identification signal.

[embodiment 4]

Although embodiment 4 reverses that promptly to return in the rotation storage ice amount very few deicing rear output shaft 20, the example of signal is iced in the inspection that also is generally used for representing storing full ice state.Therefore, among Figure 24, inspection ice signal is with dashed lines and representing with solid line not.

Figure 25 represents the 1st cam 21 of this embodiment and the formation of auxiliary cam 60.The 1st cam 21 is identical with the structure of the foregoing description 1.Auxiliary cam 60 is assembled into relative output shaft 20 and can rotates freely, and with the slotted hole of auxiliary cam 60 pin 61 of the 1st cam 21 is done the rotation qualification.

When output shaft 20 was just changeing, auxiliary cam 60 made displacement admissible region 29 be open state.Therefore, identical with the foregoing description 1, according to storing ice amount or generation or inspection ice signal not taking place.

On the other hand, because output shaft 20 is in the opposite direction promptly towards Return-ing direction rotation and in the process that ice making vessel 2 self reversal states reset, auxiliary cam 60 stops up displacement admissible regions 29, the displacement blocking portion 50 of inspection ice control lever 12 is left switch drive bar 13.Therefore, switch drive bar 13 must be shifted towards the direction of leaving switch 14 in displacement admissible region 29, thereby switch 14 is in return course, no matter store ice amount foot and deficiency, always the ice signal takes place to examine.

Figure 26 represents the groundwork program.And among this embodiment, initial setting and stall remove the flow process handled also with the foregoing description 1 the same carrying out.Behind the finishing ice-making of step 1 or prepare done state down through some cycles after the time or according to mandatory instruction from the outside, motor 15 rotates towards positive veer in the step 2, pass through to confirm the disconnection of switch 14 in the step 3, confirm the trailing edge of signals in situ, then in step 4, set timing 2.+3.+the α time, be used to detect and ice signal.

In the step 5, switch 14 if confirm the timing process, is then confirmed to occur inspection ice signal in this timing in the step 6 during for conducting not, is storage ice quantity not sufficient state, so motor 15 just changes by continuing, and allows the work of deicing.

If in the step 7, switch 14 is conducting, promptly deice signal, then allow motor 15 after step 8 stopped for 1 second, make output shaft 20 towards the i.e. rotation counterclockwise of Return-ing direction in step 9, confirm that by step 10 switch disconnects the lower edge that deices signal that causes, and disconnect, confirm inspection ice signal location according to the switch conduction of step 11, the switch of step 12.

Switch conduction according to step 13 is confirmed signals in situ.With step 14 set timing 1.+the α time, according to being that timing finishes in the step 16 of condition with switch in the step 15 14 for non-off-state, affirmation is towards the recurrence of original position, stopped for 1 second in step 17 then, remove the water supply of processing, step 19 through the stall of step 18 and move, finish a series of work in step 20.

Since in the above-mentioned steps 5 timing 2.+3.+the α effluxion before switch 14 be conducting, just can confirm as storage and completely ice state, after step 21 motor 15 stopped for 1 second, rotate towards counter clockwise direction in step 22, by confirming that the switch that inspection ice signal causes in the step 23 disconnects, behind the switch conduction that signals in situ causes in the step 24, with step 25 set timing 1.+the α time, when switch in the step 26 is non-disconnection, with step 27 confirm timing 1.+end of α time, stop the stall releasing processing of 1 second and step 29 through step 28 after, enter the SBR of step 30, prepare later inspection ice or deice.

Groundwork, embodiment 1 introduces in detail, but for unexpected state example, for example what moving part runs in the halfway, or article hang on the moving part or locking output shaft 20 or output shaft 20 can not surmount certain direction rotation etc. correspondence is not arranged under lock-out state, therefore can adopt embodiment 2, embodiment 3 or embodiment 4 on demand.

The foregoing description is that the rotation form constitutes inspection ice control lever 12, switch drive bar 13 etc., but their displacement also can be the rectilinear direction displacement, and therefore also available existing linear guiding mechanism constitutes.Also have, switch 14 is not only limited to Hall element, available contact structure.Thereby switch drive part 13 will suitably change according to switch form with the combination of switch 14.

Replenish a bit that the various embodiments described above had not illustrated again: preferably establish watchdog timer follow-up work flow process in addition.That is to say when this watchdog timer is set as the rotation of motor for example to the time about 2 times of Estimated Time Of Operation.Like this, when work did not finish in this timing, controlling party was unusual with regard on the energy judgment means what having taken place, and is disconnected to the energising of motor, can prevent the machine damage thus.

Even because the present invention adopts common DC motor, also can shorten as much as possible under the energising and stop rotating stall state, can prolong the life-span of motor, rotating part.

Claims (1)

1, a kind ofly deice after making ice making vessel [2] rotations with motor [15], the repositioning method of the ice making vessel of the ice making vessel drive unit [1] that resets of counter-rotating again, it is characterized in that: adopt to detect storage with the turning circle two ends of ice making vessel [2] and the action of the ice of the inspection in the turning course and completely ice state of switch [14], utilize the output signal of this switch [14] and the combination of timer output, ice making vessel [2] are returned, returning after deicing is that the rounded end according to ice making vessel [2] detects and makes ice making vessel [2] counter-rotating, and output signal and the timing that detects the switch [14] after state is removed according to the switch [14] at rounded end place makes ice making vessel [2] be stopped at original position again.

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