CN1197916A

CN1197916A - Automatic ice-making device for refrigerator

Info

Publication number: CN1197916A
Application number: CN98105836A
Authority: CN
Inventors: 上野俊司; 山本彰
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 1997-01-20
Filing date: 1998-01-20
Publication date: 1998-11-04
Also published as: KR100287474B1; JPH10205947A; JP3292669B2; TW367404B; KR19980070877A

Abstract

When an exhausted water storing tank is filled with water and the water storing tank is set again at a predetermined position, a time (steps S15 to 17) in which a water supplying valve of the water storing tank is kept at its released state is made shorted than that of normal state (steps S2 to 4). Thus, an amount of water discharged from the water storing tank is reduced more than that of normal stage, so that even if a small amount of water is already accumulated within an ice making container due to a presence of previous water supplying performed under a state in which a residual amount of water in the water supplying tank is quite low, it is possible to prevent an amount of water in the ice making container from being excessively increased due to the preset water supplying operation and further some cubic ices are prevented from being connected with plate-like ices.

Description

Automatic ice-making device for refrigerator

The present invention relates to a kind of automatic ice-making device for refrigerator that automatically carries out ice making to ice maker container supply gauge water.

At present, in the automatic ice-making plant of installing on refrigerator, be that gauge water is provided like this from water storage tank to ice maker container: promptly supply water to the gauge water container from water storage tank, the gauge water that is stored in this quantitative water supply device is pumped in the ice maker container by feed pump.

In the formation of using feed pump to supply water, pump motor can produce noise, therefore recently in order to supply water without water pump, a kind of ice-making compartment that is provided with below refrigerating chamber has been proposed, utilization is the structure that the valve operating system of drive source opens or closes the water-supply valve that is disposed at the water storage tank in the refrigerating chamber with the o, when water-supply valve is opened, directly supply with ice maker container because of the drop effect from the water that water storage tank flows out.

At this moment, because the water yield that flows out from water storage tank was directly proportional with the time of opening of water-supply valve, during water supply, keeping water-supply valve by valve operating system is certain opening the time, so just can guarantee to provide in ice maker container gauge water.

Yet, in the automatic ice-making plant up to now, on the outer bottom of ice maker container, temperature sensor being set, control device is according to the detected temperature of temperature sensor, and whether detect pondage and these water actual in the ice maker container icing fully.

Promptly. when water freezed fully, the temperature of ice maker container was subzero lower temperature.If feed water behind the deicing, actual water storage in the ice maker container, the ice maker container that then still is in lower temperature is heretofore heated by water, and temperature rises.Temperature sensor for example detected temperatures is lower than-13.5 degree and is judged as finishing ice-making when following, in addition, after the feedwater release, spends when above-9.5 detecting temperature through the stipulated time, is judged as in fact and supplies water to ice maker container.

In such detection architecture, if in water storage tank, supply water under the state of water shortage, can only supply with a spot of water to ice maker container, consequently, the temperature of ice maker container can not rise to feedwater detected temperatures (more than 9.5 degree).

So, take out water storage tank from refrigerating chamber, and after adding entry, again this water storage tank is put back into original position, feed water again.Because the confluent of this moment is common quantitative water supply, so add the quantitative water that supplies the water that has stored except that previous feedwater action in the ice maker container, form excessive state.

Particularly take off the lid of sky water storage tank, fill with water, lid is covered again, the interior pressure of water storage tank will rise, and the first time after installing to water storage tank on the refrigerator again will be more than the normal water supply amount from the water yield that water storage tank is discharged when feeding water.

Yet,, to be divided into a plurality of square frames in the ice maker container in order to make Fang Bing.The bio-occlusion hydrodynamic(al) is done will be configured to be no more than the dividing plate upper edge of these square frames to the water yield that ice maker container is supplied with but will be filled with in these square frames.But, such water storage tank is placed in the refrigerator and to ice maker container supplies water, if the water of storing in the ice maker container will be more than normal amount, then the water yield will exceed the dividing plate of the square frame of system Fang Bingyong, behind the finishing ice-making, the polylith square frame will be ined succession mutually by a tabular ice.

The present invention is in view of the problem of above-mentioned existence, it is the switch motion that the valve operating system of drive source is controlled the water-supply valve of water storage tank to utilizing with the o that purpose is to provide a kind of, the subtend ice maker container carries out the ice maker to water management, can avoid occurring water storage tank and fill with to be placed into behind the water in the refrigerator to ice maker container again automatic ice-making device for refrigerator more than the phenomenon of normal water supply amount is provided.

In order to finish above-mentioned purpose, automatic ice-making device for refrigerator of the present invention comprises:

Ice maker container,

Water storage tank, the admission port is arranged at the bottom of this water storage tank, and place, this admission port has one to make this admission port keep the water-supply valve of normally off, and it is detachable to be positioned at the top of above-mentioned ice maker container,

Valve operating system, the o that this valve operating system rises bar when having the bar that moves up and down and energising, be configured in above-mentioned water-supply valve below, when above-mentioned ice maker container feeds water, bar is risen open above-mentioned water-supply valve and time of opening of controlling this water-supply valve reaches the water yield that flow out the above-mentioned admission port of control by the energising effect that utilizes o

To lead from the water that flow out the admission port of above-mentioned water storage tank the water route of giving in the above-mentioned ice maker container,

When the first feedwater that above-mentioned water storage tank is placed, the time of the time of opening of the above-mentioned water-supply valve of above-mentioned valve operating system control during than common feedwater is short.

Ice maker according to claim 1, the short first feedwater of the common time of time ratio of opening that it is characterized in that water-supply valve are meant fills with first feedwater behind the water storage tank that becomes empty with water.

Ice maker according to claim 1, the structure that it is characterized in that valve operating system is in the bar embedding guide cylinder and can moves up and down, the plug effect that this bar is moved up and down by the power on/off with o moves up and down, and the lower end peripheral part of perimembranous and plug carries out chamfering and forms circular-arc in the upper end of guide cylinder.

Ice maker according to claim 3 is characterized in that the surface of guide cylinder and plug is handled to reduce resistance to sliding each other.

According to

claim

3 or 4 described ice makers, it is characterized in that valve operating system is configured in the downside to the water route, be provided with circular protrusion above the shell of this valve operating system, this projection surrounds the through hole of bar, chimeric this circular protrusion of liner retaining of pushing liner, liner are embedded in the outstanding hole to the bar of the bottom surface in water route.

Ice maker according to claim 5 is characterized in that forming and the circular protrusion corresponding concave part on the enclosure of valve operating system.

Below, with reference to description of drawings one embodiment of the present of invention.

Fig. 8 and Fig. 9 show the overall structure of refrigerator, wherein, are provided with the refrigerating chamber as storeroom from top to bottom on refrigerator body, about side by side ice-making compartment 3 and standard switch chamber 4, refrigerating chamber 5 and edible wild herbs chamber 6, each chamber 2-6 is by door 7-11 switch.

In these storerooms, the chilling temperature that standard is switched chamber 4 can switch on a large scale, by switching, can select to use refrigerating chamber, part refrigerating chamber, refrigerating chamber, any one in refrigerating chamber and the edible wild herbs chamber.

So if the temperature band of above-mentioned ice-making compartment 3 and refrigerating chamber 5 is identical, two

Room

3,5 are interconnected.At the rear portion of these ice-making compartments 3 and refrigerating chamber 5 configuration cooler 12, dividing plate 13 is configured in the rear portion of ice-making compartment 3 and refrigerating chamber 5, and lives this cooler 12 from front side cap, form cooler chamber 14 like this at 3,5 rear portions.

Inside in aforementioned barriers 13 forms cool-air feed road 15, and fan assembly 16 is delivered to the cold air in the cooler chamber 14 in this cool-air feed road 15.Send in the cold air in the cool-air feed road 15, a part blows in ice-making compartment 3 and the refrigerating chamber 5 from a plurality of blow-off outlets 17 that are formed on dividing plate 13 front portions.Remainder cold air switches the throttle setting 18 supply refrigerating chambers 2 and the standard switching chamber 4 at 4 rear portions, chamber from the rear side on cool-air feed road 15 by being arranged on standard.

Here, though not shown, at refrigerating chamber 2, be provided with temperature sensor respectively on standard switching chamber 4 and the refrigerating chamber 5.According to the detected temperatures of refrigerating chamber with temperature sensor, control the running of compressor 19 and fan assembly 16, be controlled under the low temperature of regulation with this temperature ice-making compartment 3 and refrigerating chamber 5.

In addition, throttle setting 18 has the baffle plate and the standard switching chamber side shield (both are all not shown) of refrigerating chamber side, these baffle plates are according to the refrigerating chamber temperature sensor, and standard is switched the chamber and carried out switch with the detected temperatures of temperature sensor, control the temperature that refrigerating chamber 2 and standard are switched chamber 4 thus.At this moment, amount button 21 by the operating portion 20 of operation setting on the lower position of refrigerating chamber 2, the switch temperature of just can switching standards switching the chamber side shield, by this switching, the standard that just standard can be switched chamber 4 switches to refrigerating chamber, chilly chamber, part refrigerating chamber, refrigerating chamber, a plurality of standards of edible wild herbs chamber etc.

As shown in Figure 7, the configuration of the top in above-mentioned ice-making compartment 3 ice maker body 22.These ice maker body 22 its rectangles are supported the top of frame 23 fixed in position in ice-making compartment 3, and plastic ice making window 4 is rotatably supported in the inboard of this support frame 23.At the anterior setting device shell 25 of supporting frame 23, the motor 26 that reverses up and down when in this crust of the device 25, being configured such that ice maker container 24 in deicing.

Though a plurality of square frame 24A that make Fang Bing have been separated in the inside of above-mentioned ice maker container 24, have formed not shown groove on the dividing plate of separating these square frames 24A, the water of supplying with in the ice maker container 24 flows in each square frame 24A equably by groove.Bottom outside installing temperature sensor 27 at ice maker container 24.This temperature sensor 27 does not directly contact with cold air, and resin molded forming is so that can more correctly detect the bottom temp of ice maker container 24.

Herein, in the time of near this ice maker container 24 turns to the end point position of reversing up and down, thereafter the end with support frame 23 on be to close the projection (not shown) contact and stop operating ice maker container 24 deicing at this moment.That is, when stopping operating when the rearward end of ice-making disc 24 contact tying projection, because leading section is driven by motor 26 to turn an angle thereafter, so ice maker container 24 whole one-tenth suspension statuses, under this suspension status, Fang Bing deviates from square frame 24A.Be in when carrying out deicing under the suspension status at ice maker container 24, this ice maker container 24 is got back to the origin-location with the counter-rotating of motor 26, is detected the backward position and the horizontal level of ice maker containers 24 this moment by the position detecting device shown in Fig. 6 28.

Removing Fang Bing down from ice maker container 24 is stored in and stores in the refrigerator 29.In order to detect the storage ice amount in the storage refrigerator 29, on crust of the device 25, adorning detection lever 30, this lever 30 can rotate up and down, but also is provided with storage ice amount sense switch 31 (with reference to the Fig. 6) that move according to the turned position of this detection lever.The door 8 and the standard of ice-making compartment 3 are switched chamber 4, refrigerating chamber 5, and 9-11 is the same pulls out (door 7 of refrigerating chamber 2 is rotary types) for the door of edible wild herbs chamber 6, and storage refrigerator 29 is made one with its door 8, and door 8 is pulled out, and just ice-making compartment 3 can be pulled out.

For such ice maker body 22, the corresponding position of just going up with ice-making compartment 3 on the bottom in refrigerating chamber 2 is provided with to hydroecium 32, gives on the hydroecium 32 at this waterworks 33 are set.As shown in Figure 2, the structure of these waterworks 33 is to utilize valve operating system 36 to open the water-supply valve 35 of water storage tank 34, and the water in the water storage tank 34 is under the drop effect in the supply system ice pan 24.

That is, on the bottom of hydroecium 32 case platform 37 is being set, above-mentioned water storage tank 34 is loaded in these case platform 37 tops and can pulls down.Be contained in situation on the case platform 37 in order to detect water storage tank 34, be provided with boxes detecting device 40 on the rearward end of case platform 37, this checkout gear 40 is by rotating the case sense switch of connecting 39 because of loading water storage tank 34 along the arrow A direction along the lever 38 of arrow A direction rotation and with this lever 38.

As shown in Figure 2, on the bottom of water storage tank 34, be provided with outstanding cylindrical body 34A, on this cylindrical body 34A, twisting cap 41.Form admission port 42 on this cap 41.Above-mentioned water-supply valve 35 is devices of switch admission port 42, and is contained on the cap 41.In addition, adorning water-purifying filter on the cap 41.

Water-supply valve 35 is by valve rod 44, and this valve rod 44 is subjected to the integrally formed frame 41A supporting of cap 41 and can moves up and down; Be installed in the valve body 45 on these valve rod 44 bottoms, make valve rod 44 promptly descend the compression helical spring 46 of direction pushing to constitute towards closing direction.Water storage tank 34 is except that by all the other are sealed admission port and the outside UNICOM.

Water-supply valve 35 keeps admission port 42 to be under the closed condition by valve body 45 under the elastic force effect of compression helical spring 46 usually.In case on push away valve rod 44, valve body 45 is opened admission port 42, the water in the water storage tank 34 42 flows out from the admission port.Caught by the drip tray 47 on the above-mentioned case platform 37 from the water that flow out this admission port 42, by in the water injection pipe 49 the supply system ice pans 24, this water injection pipe 24 is arranged on the adiabatic wall 48 of refrigerated chamber 2 and ice-making compartment 3 from drip tray 47.Therefore, drip tray 47 and water injection pipe 49 played will be from the admission port function of giving water route 50 in the 42 water guiding ice maker containers 24 that flow out.

The above-mentioned valve operating system of the water-supply valve 35 of switch water storage tank 34 is arranged on the below of the bottom surface sections of drip tray 47.The structure of this valve operating system 36 is to move up and down bar 51 to come switch water-supply valve 35, and o 52 is its drive source.O 52 is contained in the resin molded branch shell 53 up and down, and this shell 53 is being adorned the anti-water pond 54 of prescribed depth at outer bottom, and is fixed by bolts on the bottom of drip tray 47.

Under situation when water in refrigerating chamber 2 or fruit juice overflow, because these water or fruit juice stockpile on the inner bottom surface of refrigerating chamber 2, the liquid level that should anti-water pond 54 be used to prevent the water that stockpiled or fruit juice rises to and immerses in the shell 53, like this, can prevent fully that flange 58 is taken place by phenomenons sticking and motionless or o 52 insulation degradations.

In the hollow part of the resin mold preparative layer 52A of above-mentioned o 52, at interval 56 and tubular conduit 57 be fixed on shell 53 on cut apart shell 53A and cut apart between the shell 53B down, rubber washer 55 in clamping between tubular conduit 57 and layer 52A.Flange 58 embeds in the tubular conduit 57 and can move up and down within it, above-mentioned bar 51 and bottom/chimeric this flange 58 of minor diameter part 51A.

Here, in the component parts of valve operating system 36, bar 51 is cut apart shell 53A, 53B up and down, interval 56, tubular conduit 57, plug 58 considers to use stainless steel for well from antirust angle, wherein, cut apart shell 53A, 53B up and down, tubular conduit 57, plug 58 uses magnetic stainless steel, other use non-magnetic stainless steel.Therefore, when o is switched on, plug 58 rise close tubular conduit 57 and on the gap cut apart between the shell 53A form the closed loop magnetic circuit.

Fill in 58 power on/off because of solenoid 52 and move up and down, slide glossily because of plug 58 and tubular conduit 57 this moment, is coated with Teflon (TEFLON) or increases in surface both and slide layer, imposes the electric boundary of the nothing nickel plate that has added the Teflon in this example.In addition, inner peripheral surface for the angle scratch tubular conduit 57 that do not make plug 58 lower end peripheral part, or do not make the outer peripheral face of not scratch of angle plug 58 of the upper end peripheral part of tubular conduit 57, chamfered is carried out at the angle of perimembranous in the upper end of tubular conduit 57 and the angle of filling in 58 lower end peripheral part, form circular arc angle 57A and 58A.

The minor diameter part 51A of above-mentioned bar 51 gives prominence to a part from filling in 58, but from filling in harder slightly the elastomeric material ring 59 that chimeric easy on and off slides on 58 parts of giving prominence to.At ring 59 with between filling in 58 compression spring 60 is installed, ring 59 is usually located at the upper end step face position contacting place with minor diameter part 51A.

As shown in Figure 3, on cut apart among the shell 53A, for make the outstanding outstanding holes 61 that form of bar 51 around form the ring-type teat 62 of protrusion laterally, if this ring-type teat 62 is seen as the form of recess 62A from the inner surface of cutting apart shell 53A.When bar 51 rises, because of above-mentioned ring 59 enters in this recess 62A, can not cause shell 53 whole heights to increase, thereby can increase the stroke of bar 51.

Bar 51 inserts the through hole 63 that is formed on drip tray 47 bottom surfaces, and be positioned at water storage tank 34 water-supply valve 35 valve rod 44 under.The liner 64 that is formed by flexibel polyurethane rubber in the phase embedding on the above-mentioned through hole 63, utilizes 64 pairs of through holes 63 of this liner to seal.This liner 64 is mounted to the edge of opening portion of the fitting portion 64A of lower end round through hole 63, emerges in the edge of opening portion of through hole 63 in order to prevent this fitting portion 64A, is provided with liner retaining 65.

This liner retaining 65 is formed by rigid plastics, as shown in Figure 4, has the shape board 65A of the lower surface of bearing fitting portion 64A and erects the cylindrical portion 65B that contacts with the inner peripheral surface of fitting portion 64A with interior perimembranous from this ring-type board 65A.Since by means of this liner retaining 65 fitting portion is clipped in and the edge of opening portion of through hole 63 between, thereby soft fitting portion 64A can not be out of shape, and can prevent that its edge of opening portion from through hole 63 from deviating from.

Here, the shell 53 of valve operating system 36 is fixed to the bottom of drip tray 47 to liner 64 after being installed on the through hole 63.On the other hand, in the preceding step on the downside that shell 53 is installed to drip tray 47, form positioning states, again liner retaining 65 is placed on above the shell 53 by making the chimeric ring-type teat 62 of cylindrical portion 65B.By shell is configured on the preposition, the cylindrical portion 65B of the liner of location retaining 65 inserts in the fitting portion 64A of liner 64 but not to its supporting.Like this, annular convex 62 is used as the location division of liner 65, can improves the assembling performance.

In Fig. 7, the 66th, ball valve when water-supply valve 35 is opened, flows out from drip tray 47 in large quantities in order to prevent that the water that flows out from the admission port of water storage tank 34 is instantaneous, and this valve 66 turns down the delivery port of drip tray.

As shown in Figure 5, utilize by doube bridge circuit 68A and level and smooth electricity consumption and hold the o 52 that 68 pairs of commercial ac power sources of DC power supply circuit that 68B constitutes carry out the direct current supply valve operating means 36 that rectification obtains after level and smooth.Utilization is connected the power on/off of the relay 69 implementation os 52 between AC power 67 and the doube bridge circuit 68A.

Fig. 6 illustrates the control device 70 of ice maker.This control device 70 is based on microprocessor, the temperature sensor 27 of ice maker container 24, the position detecting switch 28 of ice maker container 24, pondage sense switch 31, case sense switch 39, the door switch 71A-71E of detecting gate 7-11 on off state is to control device 70 output detection signals.Control device 70 is according to the counter-rotating motor 26 of the programme-control ice maker container 24 of these input signals and preliminary election setting, the power on/off relay 69 of the o 52 of waterworks 33.

At this moment, such as described later, control device 70 detects when cutting off the water supply in the water storage tank 24, lights to be arranged on the operating portion 20, as the lamp 71 of cutting off the water supply that is made of light emitting diode of warning device.Operating portion 20 is arranged on the front portion of case platform 37.

Below, also contrast the effect of the above-mentioned formation of Fig. 1 process description of the control content that control device 70 is shown.

At first, to ice maker container feedwater carrying out ice making.At the door 7 of closing cold room 2, and water storage tank 34 is placed under the prerequisite on the case platform 37 feeds water.That is, the detection signal of the door switch 71A that uses according to refrigerating chamber of control device 70 and the detection signal of case sense switch 39 judge whether the door 7 of refrigerating chamber 2 closes and whether water storage tank 24 is placed on (step S1) on the case platform 37.

If the door 7 of refrigerating chamber 2 is closing, and water storage tank 24 is placed on case platform 37 (step S1[is]), control device 70 is connected as 2.1 seconds relay 69, only between 2.1 seconds to o 52 energisings of valve operating system 36 feed water normally (, carrying out repeatedly when among the step S3 [denying]) at step S2.

If o 52 energisings, as shown in Figure 3, plug 58 is subjected to magnetic attraction and rises.At this moment, along with plug 58 rising, ring 59 with on cut apart shell 53A the top of annular recessed portion 62A contact, plug 58 rises and further compresses spring 60 up to contact ring 59.Like this, plug 58 and on cut apart between the shell 53A and produce minim gap, two cut apart shell 53A up and down, 53B, tubular conduit 57, plug 58 forms so-called ring-type Low ESR magnetic circuits.Because of fill in 58 directly with on cut apart shell 53A and contact, so can prevent to produce impulsive sound.

When plug 58 as above rose like that, bar 51 was by pushing away the valve rod 44 of water-supply valve 35 on the liner 64, and like this, water-supply valve 42 is opened.So the water in the water storage tank 34 is 42 outflows from the admission port, the water of outflow flows in the drip tray 47, and supplies with in the ice maker containers 24 by water injection pipe 49.Begin through 2.1 seconds (the step S3 [being]) from feedwater, control device 70 stops to power to o for stopping feedwater.

When o had a power failure, plug 58 (bars 51) were because of deadweight descends, the valve body 45 of water-supply valve 35 by compression spring 46 the elastic force effect and pushed away down, admission port 42 is closed, like this, water storage tank 34 stops to ice maker container 24 water supply.Usually giving under water, 42 openings in admission port 2.1 seconds by the control to the open hour, just can guarantee generally to supply with a certain amount of water in ice maker container 24.

Yet, even o 52 has a power failure, under the influence of residual magnetic field, tend to occur plug 58 fall time point postpone to descend, under opposite extreme situations, even descend, and still by on cut apart the sorption of shell 53A institute.Particularly must push away in the present embodiment of valve rod 44 on the elastic force by bar 51 contrary compression springs 46, especially worry to have increased the magnetizing force of o 52, residual magnetic field also increases thereupon, and plug occurs postponing fall time of 58, or even descend and still by on cut apart shell 53A sorption.

Yet, in the present embodiment,, plug 58 protect at lower position owing to being in by compression spring 60 effects, therefore have a power failure when o 52, even there is residual magnetic field, the elastic force of compression spring 60 will be forced to cut apart shell 53A in its disengaging.Therefore, plug 58 descends when o 52 has a power failure immediately down to bar 51, this means with by control o 52 conduction time, in other words control the open hour of admission port 42 and control in the present embodiment of this structure of the ice maker container 24 necessary confluents of supply, can guarantee the correctness of its confluent.

After above feedwater release, control device 70 judges whether water storage tank 34 is drawn out of (step S4) in above-mentioned 2.1 seconds common feedwater, when not extracting out (among the step S4 [be]), control device 70 receives the detected temperatures (step S5) of temperature sensor 27 inputs having passed through official hour point, according to this temperature judge whether normally to feed water (step S6).If normally feed water, because the ice maker container 24 that so far is under the extremely low temperature is subjected to the new water heating of supplying with and the temperature rising, for example temperature rises to more than-9 ℃, by detecting the temperature of ice maker container 24, just can judge whether normal feedwater finishes.

The temperature of the ice maker container of importing in step S5 24 is more than-9 ℃ the time, control device 70 judges that feedwater is for normally carrying out (being [being] in step S6), after, whether build-up ice fully in order to detect these water, the temperature signal (step S7) that detects to control device 70 input temp sensors 27 repeatedly, whether the temperature when whether being finishing ice-making according to its detected temperatures is below-13.5 ℃, judges whether ice making finishes (step S8).

Temperature sensor 27 detects temperature below 13.5 ℃, control device 70 is judged finishing ice-making (being [being] among the step S), afterwards, confirm that the door 8 of ice-making compartment 3 is closed (among the step S9 [being]), and drive motors reverses so that deicing (step S10) ice maker container 24 up and down.So ice maker container 24 is reversed, the Fang Bing that makes in it falls and is stored in the storage refrigerator 29.Afterwards, motor 26 backward rotation make ice maker container 24 turn back to original horizontal level, and position sensor 28 detects ice maker container 24 and turned back to the origin-location, judge that then deicing finishes.

Since this deicing action, and the Fang Bing of the new system under removing is stored in the refrigerator 29.At this moment, detect storage refrigerator 29 and store full ice if detect lever 30, though the flow process among Fig. 1 does not illustrate, control device 70 was not jumping to step down take out ice in storage refrigerator 29 before, and the maintenance wait state.

When deicing release (among the step S11 [being]), control device 70 is execution in step S1 once more, judges promptly whether the door 7 of refrigerating chamber 2 is closed, and after the door 7 of confirming refrigerating chamber 2 is closed, carries out above-mentioned same common feedwater action, and carries out repeatedly.Therefore, be under the door 7 pent states of refrigerating chamber 2, to carry out because feedwater is moved, therefore because the energising of o 52 is not heard the harshness user who produces when cutting apart shell 53A in plug 58 impacts.

Because feedwater repeatedly, the water that then can appear in the water storage tank 34 remains under few state, and to ice maker container 24 feedwater, even stored water in the ice maker container 24, because the water yield is less, the temperature of ice maker container 24 can not rise to the situation more than-9 ℃.So control device for not, is lighted the lamp 72 (step S12) of cutting off the water supply in judging the step S6 whether feedwater is normally carried out.

The user opens the door 7 o'clock of refrigerating chamber 2, because the lamp 72 of cutting off the water supply is lighted, water storage tank 34 is the empty van state as can be known.From case platform 37, will store refrigerator 34 taking-ups, take out cap 41 from the 34A of tube portion, from the 34A of this water filling in water storage tank 34.Afterwards, cap 41 is screwed on the 34A of portion, because of the pressure of tightening in the water storage tank 34 higher slightly.

Afterwards, again water storage tank 34 is put on the case platform 37.So the ON Action of the case sense switch 39 the when closing motion of the case sense switch 39 when control device 70 takes out according to water storage tank 34 and water storage tank 34 are placed again judges whether to be put back to (step S13) again after in a single day water storage tank 34 takes out.Then, when the door 7 of affirmation refrigerating chamber 2 is closed (step S14), the time that conduction time when control device 70 makes circuit breaker 69 connect than common feedwater, (2.1 seconds) will lack was as 1.7 seconds, o 52 to valve operating system 36 was powered 1.7 seconds, supply water for the first time (step S15 carries out for not the time among the S16 repeatedly).

Short being 1.7 seconds of the time of when the time ratio of o 52 energisings feeds water usually, switching on when as mentioned above, first feedwater is moved.Therefore, the water yield of the water yield that flows out from water storage tank 34 when feeding water usually lacked, even store in the ice maker container 24 low amounts of water that last time, the feedwater action was supplied with arranged, in addition, the interior pressure that cap 41 is being tightened water storage tank 34 has slightly, even also the water yield than common outflow was many 42 water yield moments of flowing out from the admission port, also needn't worry to store the standard unnecessary water yield partly that exceeds the recess 24A that makes Fang Bing because of this water supply.If first feedwater finishes (among the step S16 [being]), control device 70 judges whether water storage tank 34 does not extract (step S17) out in the above-mentioned 1.7 seconds first feedwater, if do not extract out (step S17[is]), enter into above-mentioned steps S5, through after the stipulated time, temperature signal to control device 70 input temp sensors 27 detect judges whether normally feed water (step S6) from detected temperatures, carry out ice making action described later repeatedly.

In the implementation of usually feedwater and first feedwater, under the situation of water storage tank 34 being extracted out from the case platform 37, control device 70 indicates after the feedwater release according to the indicator that has or not case that is provided with and has or not case to judge whether water storage tank 34 is extracted out in the feedwater.Water storage tank 34 extractions in the feedwater (step S4, S17[is for denying]), control device 70 is accepted detected temperatures (the step S18 of temperature sensor 27 at the appointed time, 20), judge whether normal feedwater (step S19, step 21) according to this detected temperatures, if normal feedwater (step S19,21 for being), enter step S7, monitor finishing ice-making, if it is undesired, (step S19,21 for denying) feeds water once more.

Even because of in the feedwater course of action water storage tank 34 extractions being fed water once more, be judged as under the situation of improper feedwater in feedwater action for the first time, its pondage is few.Therefore, do not reach 2.1 seconds situation with water to be filled with sky water storage tank handgrip cap 41 situation that pressure in the water storage tank 34 rises of screwing on different for carrying out water once more among the step S19 during for common feedwater yet, feedwater for the second time can not cause the unnecessary water yield of storing the standard part of the recess 24A that surpasses system Fang Bingyong at ice maker container, therefore can not supply to the degree that unnecessary water overflows from ice maker container 24.

Describe and illustrated embodiment above the present invention is not limited to, can also do following improvement:

The helical spring 60 that can replace downward tamponade 58 with leaf spring;

Can use the drive source of the valve operating system 36 of motor permutator water-supply valve 35, at this moment, for example utilize by motor-driven cam bar 51 is moved up and down.

As above explanation, the present invention can obtain following effect.

Among the present invention of claim 1 record, because when water storage tank is put back to first feedwater again, during its feedwater Between shorter than the time of usually feedwater, although still had a small amount of water to be stored in the ice maker container when therefore feeding water last time, Unusual many situations appear in the pondage that still can prevent ice maker container.

Among the present invention of claim 2, the valve of feedwater during owing to the first feedwater after Jiang Shui fills with water storage tank Opening time is shorter than common time, therefore particularly fills with to screw on again cap behind the water and the water storage tank internal pressure raises, Even the water yield that flows out in the water storage tank when feeding water for the first time is more, still can positively prevent ice maker container water storage The unusual many phenomenons of amount.

The present invention of claim 3 is owing to the power on/off effect of the o that utilizes valve operating system Perimembranous all is processed into circular arc in the upper end of the lower end peripheral part of the plug that moves up and down and the tubular conduit of this plug Therefore shape can prevent from filling in plug and the mutual damage of tubular conduit when moving up and down.

The present invention of claim 4 record is owing to do suitably on the surface of filling in and the tubular conduit slides mutually Processing is to reduce resistance, and therefore plug can slide up and down glossily.

The present invention of claim 5 record is owing to be provided with ring on the housing exterior of the operating means of valve The shape projection with the protuberance of encircles rod, therefore can utilize this circular protrusion to keep off positioning element as liner.

The present invention of claim 6 record is owing to formed in the enclosure corresponding with circular protrusion above the section Recess, therefore as above such, circular protrusion is used as the positioning element of liner gear in the outside, and inboard the generation Recess be used as the space that moves up and down of plug, therefore can increase the stroke of bar.

Claims

1. the automatic ice-making plant of a refrigerator is characterized in that this device has

Ice maker container,

2. ice maker according to claim 1, the short first feedwater of the common time of time ratio of opening that it is characterized in that water-supply valve are meant fills with first feedwater behind the water storage tank that becomes empty with water.

3. ice maker according to claim 1, the structure that it is characterized in that valve operating system is in the bar embedding guide cylinder and can moves up and down, the plug effect that this bar is moved up and down by the power on/off with o moves up and down, and the lower end peripheral part of perimembranous and plug carries out chamfering and forms circular-arc in the upper end of guide cylinder.

4. ice maker according to claim 3 is characterized in that the surface of guide cylinder and plug is handled to reduce resistance to sliding each other.

5. according to claim 3 or 4 described ice makers, it is characterized in that valve operating system is configured in the downside to the water route, be provided with circular protrusion above the shell of this valve operating system, this projection surrounds the through hole of bar, chimeric this circular protrusion of liner retaining of pushing liner, liner are embedded in the outstanding hole to the bar of the bottom surface in water route.

6. ice maker according to claim 5 is characterized in that forming and the circular protrusion corresponding concave part on the enclosure of valve operating system.