CN1112558C

CN1112558C - Electric refrigerator

Info

Publication number: CN1112558C
Application number: CN98119585A
Authority: CN
Inventors: 丰嶋昌志
Original assignee: Sanyo Electric Co Ltd
Current assignee: Haier Group Corp; Qingdao Haier Co Ltd
Priority date: 1997-09-26
Filing date: 1998-09-25
Publication date: 2003-06-25
Anticipated expiration: 2018-09-25
Also published as: CN1215147A; JPH11101538A; KR19990030143A; KR100610296B1

Abstract

A refrigerator in which ice making operation by an automated ice making machine is restarted without using a particular switch for detecting demounting of a water supply tank. In a refrigerator, a freezing chamber and a refrigeration chamber are divided and formed in a heat insulating box, and an automated ice making machine is disposed in the freezing chamber and a water supply tank is disposed in the refrigeration chamber. The refrigerator is to execute ice making operation, and it is characterised in that includes a door, door opening/closing detection means and control means. The control means includes means for detecting presence of supply water from the water supply tank, which means interrupts ice making operation of the automated ice making machine when no water is supplied, and restarts the ice making operation of the automated ice making machine after a predetermined time since the time the door opening/closing detection means detects opening and closing of the door.

Description

Refrigerator

The present invention relates in refrigerating chamber, have the refrigerator of automatic ice maker.

Existing this kind refrigerator for example in the refrigerator that the real fair 6-12301 communique of Japan (F25D23/00) discloses, constitutes refrigerating chamber and refrigerating chamber in body of thermal insulating box.In recent years, in order to improve the convenience of use, how the automatic ice maker of frequent generation ice and storage of ice is set in refrigerating chamber.Supply water to this automatic ice maker by pump from the supply flume that is provided in the refrigerating chamber, utilize the cold air ice making in the refrigerating chamber.When the water in the supply flume has been used up, take out this supply flume (at this moment, supply flume unloads from feed pipe) from refrigerating chamber, put back in the refrigerating chamber after the water filling again and be connected with feed pipe.In the prior art, the switch that detects the supply flume position is set, detects the loading and unloading of this supply flume, make automatic ice maker begin the ice making running again.

But, because this sense switch is positioned at the rear side of supply flume, so water etc. can be invaded.Therefore, the switch that can not use contact to expose must adopt the contactless high price switch that is made of reed switch and Huo Er IC etc., exists the high problem of cost.

The present invention makes in view of the above problems, and its purpose is to provide a kind of refrigerator, in this refrigerator, can not adopt the switch that detects the supply flume loading and unloading, makes automatic ice maker restart the ice making action.

To achieve these goals, refrigerator of the present invention is divided in body of thermal insulating box and is formed refrigerating chamber and refrigerating chamber, and automatic ice maker is set in refrigerating chamber, and supply flume is set in refrigerating chamber, supplies water to automatic ice maker from this supply flume, carries out the ice making action; It is characterized in that, but have the controlling organization that the door of freely openable refrigerating chamber opening, the door that detects this switching open and close testing agency and control automatic ice maker; This controlling organization has and detects the mechanism that has the supply flume of having no way of to supply water, when supply flume supplies water, stop the ice making action of automatic ice maker, open and close testing agency from above-mentioned door and detect the moment that opens and closes of going out, restart the ice making action of automatic ice maker through after the stipulated time.

According to the present invention, in body of thermal insulating box, divide and form refrigerating chamber and refrigerating chamber, automatic ice maker is set in refrigerating chamber, supply flume is set in refrigerating chamber, supply water to automatic ice maker from this supply flume, carry out the ice making action; It is characterized in that, but have the controlling organization that the door of freely openable refrigerating chamber opening, the door that detects this switching open and close testing agency and control automatic ice maker; This controlling organization has and detects the mechanism that has the supply flume of having no way of to supply water, when not when supply flume supplies water, stop the ice making action of automatic ice maker, open and close testing agency from above-mentioned door and detect the moment that opens and closes of going out, make automatic ice maker restart the ice making action through after the stipulated time.So, can not need detection supply flume of the prior art to load and unload the switch of usefulness, make automatic ice maker restart the ice making action, can significantly reduce cost.

The refrigerator of second technical scheme of the present invention, on the basis of the invention described above, it is characterized in that, have the current detecting mechanism that the water in the supply flume is supplied with pump with the electrical current that detects this pump of automatic ice maker, controlling organization turns round this pump and supplies water to automatic ice maker in specified time limit, simultaneously, according to the output of current detecting mechanism, when the electrical current of pump is reduced to setting, stop this pump forcibly.

The refrigerator of second technical scheme according to the present invention, on the basis of foregoing invention, have the current detecting mechanism that the water in the supply flume is supplied with pump with the electrical current that detects this pump of automatic ice maker, controlling organization turns round pump at the appointed time, supply water to automatic ice maker, simultaneously, according to the output of current detecting mechanism, when the electrical current of pump is reduced to setting, stop this pump forcibly.So even door is opened and closed and during water filling, also can not stop the dry run of pump rapidly in supply flume, the noise suppression that dry run can be produced is in minimum degree.

Fig. 1 is the front view of refrigerator of the present invention.

Fig. 2 is the front view that has removed the refrigerator of the present invention of insulated door.

Fig. 3 is the refrigerator front view that has unloaded container etc. and removed insulated door.

Fig. 4 be refrigerator of the present invention vertically cut open side view.

Fig. 5 is that another of refrigerator of the present invention vertically cuts open side view.

Fig. 6 is the another side view that vertically cuts open of refrigerator of the present invention.

Fig. 7 is the refrigerating chamber stereogram of refrigerator of the present invention.

Fig. 8 is the perspective elevation of the refrigerating chamber rear section dividing plate of refrigerator of the present invention.

Fig. 9 is that side view is vertically cutd open in the amplification of the cooler bottom of refrigerator of the present invention.

Figure 10 is that side view is vertically cutd open in the another amplification of the cooler bottom of refrigerator of the present invention.

Figure 11 is the cooler front view of refrigerator of the present invention.

Figure 12 is the cooler vertical view of refrigerator of the present invention.

Figure 13 is the cooler side view of refrigerator of the present invention.

Figure 14 is the upper partition wall exploded perspective view of refrigerator of the present invention.

Figure 15 is that the upper partition wall level of refrigerator of the present invention is cutd open vertical view.

Figure 16 be refrigerator of the present invention preceding partition member vertically cut open side view.

Figure 17 is the exploded perspective view of the automatic ice maker of refrigerator of the present invention with feed trough.

Figure 18 is that the automatic ice maker of refrigerator of the present invention vertically cuts open side view with feed trough.

Figure 19 is that the automatic ice maker of refrigerator of the present invention vertically cuts open front view with feed trough.

Figure 20 is a controlling device for refrigerator circuit block diagram of the present invention.

Figure 21 is the flow chart of expression microcomputor program.

Figure 22 is the flow chart of expression microcomputor program.

Below, with reference to the description of drawings embodiments of the invention.Fig. 1 is the front view of refrigerator of the present invention.Fig. 2 is the front view that has removed the refrigerator of insulated door.Fig. 3 is the refrigerator front view that has unloaded container etc. and removed insulated door.Fig. 4 be refrigerator of the present invention vertically cut open side view.Fig. 5 is that another of refrigerator of the present invention vertically cuts open side view.Fig. 6 is the another side view that vertically cuts open of refrigerator of the present invention.

Refrigerator 1 is made of the body of thermal insulating box 6 of front openings.This body of thermal insulating box 6 is between the interior case 3 of hard resin systems such as steel plate system outer container 2 and ABS, constitutes with heat-insulating material 4 such as foam-in-place mode filled with polyurethane foam.In the case of this body of thermal insulating box 6, be separated into four chambers up and down with upper partition wall 8, middle partition wall 7 and lower partition wall 9, it above upper partition wall 8 refrigerating chamber 11, it below lower partition wall 9 vegetable compartment 12, being ice greenhouse 10 between upper partition wall 8 and middle partition wall 7, is refrigerating chamber 13 between middle partition wall 7 and lower partition wall 9.Partition member 15 before being installed with on the edge of opening in the middle of middle partition wall 7 and lower partition wall 9.

The front openings of refrigerating chamber 11 is by opposite opened insulated

door

14,14 freely openables, and refrigerating chamber 13 and vegetable compartment 12 are respectively by the drawer type insulated

door

16,17 that has top

open containers

16A, 17A, 18A (refrigerating chamber 13 accounts for two layers of door up and down), 18 freely openables.Ice greenhouse 10 is also by drawer type insulated door 19 freely openables of the container 19A that has top opening.

Upper left angle portion at refrigerating chamber 13 is being provided with automatic ice maker 21.Ice-making disc and the rotation that this automatic ice maker 21 is not shown by figure, turn round the ice machine motor of twisting this ice-making disc and constitute.The rear portion of refrigerating chamber 13 is separated plate 22 and cooler header board 23 front and back ground separates, and is separated to form at the rear side of cooler header board 23 to be cooling chamber 24, and cooler 26 vertically is arranged in this cooling chamber 24.Above the central authorities of this cooler 26, be provided with air blast 29, below cooler 26, be provided with Defrost heater 31.

Top and central portion at demarcation strip 22 form several refrigerating chamber outlets 13A ... form refrigerating

chamber suction inlet

13B, 13B on the position, the left and right sides, bottom of demarcation strip 22, the lower central position between them also is adjacent to form refrigerating

chamber suction inlet

13C, 13C.

Leave a little between the rear side of cooler header board 23 and demarcation strip 22 at interval, form grid 23A at an upper portion thereof, the fan 32 of air blast 29 is facing to this grid 23A.The space that the demarcation strip 22 of fan 32 front sides and cooler header board are 23 is with refrigerating chamber outlet 13A ... be communicated with.In the lower central portion of cooler header board 23, form opening 23B, this opening 23B and above-mentioned refrigerating

chamber suction inlet

13C, 13C and 24 interior connections of cooling chamber.Refrigerating

chamber suction inlet

13B, 13B are communicated with the foot of cooling chamber 24 through the lower end of cooler header board 23.

To shown in Figure 13, above-mentioned cooler 26 is so-called plate fin-type heat exchangers as Figure 11, by some thin aluminum sheet system fins 27 that also extend along the vertical direction at a distance of predetermined distance ... with these fins 27 of perforation ... refrigerant piping 28 constitute.The fin density of the bottom of cooler 26 (at interval) is dredged, and the fin density of the left-right and front-back portion except central portion is also dredged.

That is each fin 27 ... size up and down, two to three fin 27 ... be to shorten continuously, the left and right sides fin 27 of holding them under the arm is long, and at central portion, the size up and down of brachypterism sheet 27 is for shorter every a slice.Each fin 27 about being positioned at ... the front and back width also be for narrower every a slice.

Like this, in the lower edge of cooler 26, constitute the regional 26A that fin density is dredged; Constitute at central portion and to erect and to extend to the regional 26B that the fin density of above-below direction central portion below slightly dredged from regional 26A continuously; In addition, also constitute the regional 26C that fin density is dredged at left-right and front-back edge (Outboard Sections of the residing cooler 26 of edge part of the fin 27 that the above-below direction that circulates along cold air extends) ...26B is corresponding with the below of air blast 29 in the zone, simultaneously, and above-mentioned opening 23B and the front side of this zone 26B corresponding (Fig. 8).

Above air blast 29, form guiding channel 39, the rear portion of the moulded heat insulating material material 38 during this guiding channel 39 connects up and down and is inserted in the partition wall 7.The bottom of this guiding channel 39 is communicated with the space in fan 32 the place aheads, is connecting the branched bottom 42 that is formed in the moulded heat insulating material 41 communicatively on top.This branched bottom 42 uses MOD 46, one sides of air door 44 to be communicated with refrigerating chamber back side passage 47 through having refrigerating chamber with air door 43 and ice greenhouse, and the opposing party is communicated with ice greenhouse passage 48.Refrigerating chamber is positioned at the inlet of refrigerating chamber back side passage 47 with air door 43, and the ice greenhouse is positioned at the inlet of icing greenhouse passage 48 with air door 44.

The rear portion of refrigerating chamber 11 and interior case 3 back sides are left the compartment of terrain back side channel plate 49 are installed, and form the refrigerating chamber back side passage 47 that extends up and down between this back side channel plate 49 and interior case 3.The front of back side channel plate 49 forms refrigerating chamber outlet 11A.In refrigerating chamber 11, setting up several layers shelf 51 ...Suction inlet 61 after the bight, bottom right of the back side channel plate 49 at refrigerating chamber 11 back sides is forming refrigerating chamber, suction inlet 61 is communicated with backward channel 63 tops behind this refrigerating chamber.This backward channel 63 is formed on moulded heat insulating

material material

38,41 sides of backplate 62 rear sides in ice greenhouse 10.

In the bight, lower-left of refrigerating chamber 11, accommodating the supply flume 52 that supplies water to automatic ice maker.This supply flume 52, is made of groove body 53, lid 54 and cover 56 etc. to shown in Figure 19 as Figure 17.Groove body 53 is front and back elongated shape and top opening.Lid 54 is used to close the top opening of locked groove body 53.Cover 56 is installed on this lid 54.

Form the depressed part 54A of rectangle in the front portion of lid 54, also form rectangular-shaped inlet 57 in the bottom surface of this depressed part 54A.The 56A of trailing edge both sides hinge portion of cover 56,56A ground free to rotate pivot prop up on the lid 54 at inlet 57 rears, but this inlet 57 of freely openable.

This cover 56 is the concave shape that carries over depressed part 54A interior shape, and like this, available finger scratches cover 56.In addition, at lid 54 rear portion, its suction tube 54B down stretches in groove body 53, and this suction tube 54B of portion is communicated with the connecting portion 54C of opening towards the rear covering 54 rear ends.

When supply flume 52 is set, insert in the refrigerating chamber 11, connecting portion 54C is managed to make do connect the feed pipe 59 that is located at the rear portion with taking off from the place ahead.This feed pipe 59 is communicated with automatic ice maker 21, and the water in the groove body 53 is carried out the ice making running there by the above-mentioned ice-making disc that a 54B of portion that absorbs water sucted, also supplied with through connecting portion 54C, feed pipe 59 automatic ice makers 21.The ice that generates is stored in the refrigerating chamber 13.

When water groove body 53 in has been used up, supply flume 52 is extracted out in refrigerating chamber 11, at this moment, finger to be inserted in the cover 56 of depression, draw past front, can easily supply flume 52 be pulled out.

Cover 56 is upwards opened inlet 57 rotationally from the front, water can be added in the groove body 53, at this moment because cover 56 opens and closes easily, the injection operation is also easy.In addition, after replenishing, closing cap parts 56 are transferred, and at this moment, cover 56 is being closed inlet 57 (Figure 19) along with the inner face location of lid 54 depressed part 54A, so, transport Shi Buhui and leak because of rocking from inlet 57.

Upper partition wall 8 is as Figure 14, shown in Figure 15, is made of hard resin system upper plate 66, lower plate 67 and the moulded heat insulating material 68 that is provided with below upper plate 66.Between moulded heat insulating material 68 and lower plate 67, constitute ice greenhouse passage 48.Ice greenhouse passage 48 is forwards expanded by the inlet 48A of the upright next door 69 that is located at the blind pass shape on lower plate 67 upper surfaces from the rear portion.Form several ice greenhouse outlets 71 being positioned on way portion wherein and the anterior lower plate 67 ...

The upright next door 72～74 of establishing on the place ahead of next door 69 and right-hand lower plate 67, by these next doors in the upper partition wall 8 in ice passage 48 outsides, greenhouse, side by side two refrigerating

chamber suction passages

77,78 about

formation.Suction inlet

79,81 before forming refrigerating chamber about on the front portion of upper plate 66, suction inlet 79 is communicated with the inlet portion 77A of the refrigerating chamber suction passage 77 in left side before the refrigerating chamber in left side, and suction inlet 81 is communicated with the inlet portion 78A of the refrigerating chamber suction passage 78 on right side before the refrigerating chamber on right side.The rear end of each refrigerating

chamber suction passage

77,78 is communicated with above-mentioned backward channel 63, and the result is communicated with aftermentioned vegetable compartment passage 87.

At this moment, the passageway cross-sectional area of the refrigerating chamber suction passage 77 in left side is greater than the passageway cross-sectional area of the refrigerating chamber suction passage 78 on right side, and the 77A of suction portion also enlarges (Figure 15) than the 78A of suction portion.Each refrigerating

chamber suction passage

77,78 from the front side of ice greenhouse passage 48 around to the right side, so the path-length of the refrigerating chamber suction passage 77 in left side is greater than the path-length of the refrigerating chamber suction passage 78 on right side.

Form the narrow access 83 of width between next door 72 and the next door 69, the front end of ice greenhouse passage 48 is communicated with the 77A of suction portion of refrigerating chamber suction passage 77 by this access 83.Backplate 62 right sides in ice greenhouse 10 form ice greenhouse suction inlet 84, are communicated with backward channel 63.

At the right part of moulded heat insulating material 38, connecting the upper end of vegetable compartment passage component 86, fall downwards from the right side of cooling chamber 24, portion constitutes vegetable compartment passage 87 within it.The upper end of this vegetable compartment passage 87 is communicated with backward channel 63, and the lower end is at vegetable compartment outlet 88 openings on vegetable compartment 12 right back tops.

Form vegetable compartment suction passage 91 in lower partition wall 9, this vegetable compartment suction passage 91 is at vegetable compartment suction inlet 92 openings, and this vegetable compartment suction inlet 92 is opening on vegetable compartment 12 rear portions, and this vegetable compartment suction passage 91 is communicated with the bottom of cooling chamber 24.

Before above-mentioned partition member 15 as shown in figure 16, by hard resin system body 93, be located at moulded heat insulating material 94, steel plate system header board 96 in this body 93, the anti-condensation that is installed in inside it constitutes with high temperature refrigerant pipe arrangement 97.The lower wall of body 93 is that anterior 93A is low, the step-like shape that uprises of rear portion 93B.

Forwardly the rear end of 93A than its lower surface position slightly up, forms junction surface 93C, and the downside of this junction surface 93C and rear portion 93B has at interval and be rearward outstanding.The base portion 98A of seal member 98 engages from the rear and is installed on the 93C of this junction surface, and its soft fin 98B is outstanding to the front lower place.

The soft fin 98B of sealing parts 98 connects airtight with the leading edge back of container 17A under the state that insulated door 17 is being closed and seals, and at this moment, the lower surface of the base portion 98A of seal member 98 slightly flushes with the lower surface of the anterior 93A of body 93.That is, the base portion 98A of seal member 98 or its mounting portion (being formed on the preceding partition member 15) is outstanding downwards, so, can not hinder container 17A, can enlarge the size up and down of container 17A, enlarge dischargeable capacity.

On

other partition wall

7,8,9, form this structure similarly.The 104th, the refrigerator temperature sensor of temperature in the detection refrigerating chamber 11, it is installed on the back side channel plate 49.The 106th, detect the ice greenhouse temperature sensor of icing temperature in the greenhouse 10, be installed on the lower plate 67.

Constitute Machine Room 99 in the bottom of body of thermal insulating box 6, rear portions are being provided with above-mentioned cooler 26 and are constituting the compressor 101 of known kind of refrigeration cycle, condenser that figure does not show, Machine Room air blast etc. in this Machine Room 99.At the downside of insulated

door

18,99 front end is installed with bottom notch plate 102 in the Machine Room.Offer the air entry 103 of ventilation usefulness in Machine Room 99 on this bottom notch plate 102.

Figure 20 represents the circuit block diagram of the control device 108 of refrigerator 1.Control device 108 is made of general microcomputer 110.Detect the freezer temperature sensor 109 of temperature in the refrigerating chamber 13, refrigerator temperature sensor 104, ice greenhouse temperature sensor 106, detect the o.a.t sensor 111 of refrigerator 1 periphery temperature, detect the ice making sensor 112 of the ice-making disc temperature of automatic ice maker 21, set the setting loop 113 that constitutes by potentiometer etc. by temperature, detect the current detection circuit 114 of each motor electrical current of aftermentioned and by detecting each insulated

door

14,14,16,17,18, each of the door switch loop 116 that several door switch of 19 switching constitute is input in this microcomputer 110.

The output of microcomputer 110, the compressor motor 101M that constitutes by driver 122 and DC motor by drive compression machine 101 is connected respectively, the blower motor 29M that constitutes by driver 123 and DC motor by blower 29 is connected, the Machine Room blower motor 117 that constitutes by driver 124 and DC motor by driving device chamber air blast is connected, be connected with the ice machine motor 21M that the DC motor of the ice-making disc rotation that makes automatic ice maker 21 constitutes by driver 126, the pump motor 118 that constitutes by driver 127 and DC motor by driving pump (this pump from supply flume 52 to the feedwater of the ice-making disc of automatic ice maker 21) is connected, damper motor 46M with the MOD 46 that is made of the DC motor is connected by driver 128.

The output of microcomputer 110 is connected with relay circuit 129 by the DC power drives, above-mentioned Defrost heater 31, be located at feed pipe heater 119 around the supply-water pump 59, other prevents to freeze or anti-condensation is connected with relay circuit 129 respectively with heater 121.

The following describes the action of above-mentioned structure refrigerator.Microcomputer 110 is according to the output of freezer temperature sensor 109, when the temperature in the refrigerating chamber 13 arrives the set upper limit temperature, and drive compression machine motor 101M, Machine Room blower motor 117, blower motor 29M.Like this, when compressor 101, air blast 29 runnings, the fan 32 of the Quilt with air conditioning air blast 29 in the cooling chamber 24 of the device that is cooled cooling is drawn onto the top, from the refrigerating chamber outlet 13A in the place ahead ... blow in the refrigerating chamber 13.

In container 16A, the 17A of cold air in refrigerating chamber 13 after the circulation cooling, return in the cooling chamber 24 from refrigerating

chamber suction inlet

13B, 13B, 13C, the 13C of bottom.When the temperature in the refrigerating chamber 13 was reduced to the predetermined lower limit temperature, microcomputer 110 stopped compressor motor 101M, Machine Room blower motor 117, blower motor 29M.Like this, refrigerating chamber 13 can remain on design temperature (about 20 ℃).

The cold air that flows into from refrigerating

chamber suction inlet

13B, 13B flows in the cooler 26, at each fin 27 from the regional 26A of cooler 26 lower ends ... between rise.The cold air that flows into from refrigerating

chamber suction inlet

13C, 13C is from the central portion of cooler 26 about slightly in the regional 26B inflow cooler 26 of downside.

As described later, from the many cold air of moisture vegetable compartment suction inlet passage 91, in refrigerating chamber 11, ice greenhouse 10 and vegetable compartment 12 after the circulation, flow into from the regional 26A of cooler 26 lower ends, so, can generate the frost of volume at the regional 26A of cooler 26, but, the cold air that flows into from refrigerating

chamber suction inlet

13C, 13C side's (downstream side) from it flows into the regional 26B that the fin density of cooler 26 is dredged, import the zone of the close air blast of fan density 29 belows then, so the frost that generates at regional 26A does not hinder from the circulation of the cold air of regional 26B inflow.

Front and rear edge about cooler 26 (Outboard Sections of the cooler 26 at the fin 27 edge part places that the above-below direction that circulates along cold air extends), also constitute the regional 26C that fin density is dredged ... so,, even by the frost of regional 26A when inaccessible, because regional 26C exists, its white obturation is also slow.

Therefore,, cold air is imported in the cooler 26, can carry out heat exchange from regional 26C in such cases, so, keep fin 27 and the heat exchange of the cold air that circulates, can significantly improve the cooling capacity of cooler 26.

Portion about beyond cooler 26 central portions corresponding with air blast 29 constitutes regional 26C, so in cooler 26, circulate the most fin density of part of cold air becomes close as previously mentioned.Therefore, can keep rate of heat exchange, generate when white, keep the cold air circulation by regional 26B, 26C as previously mentioned, can guarantee heat exchange at the state of frostless or few frost.

The part of the cold air that blows out from air blast 29 flows in the guiding channel 39, be diverted to two directions by branched bottom 42 after, a side flows into refrigerating chamber back side passages 47 through the refrigerating chamber of MOD 46 with air door 43.The cold air that flows into refrigerating chamber back side passage 47 is from refrigerating chamber outlet 11A ... be blown out in the refrigerating chamber 11, after the circulation cooled interior,

suction inlet

79,81 before suction inlet 61 and the refrigerating chamber behind the inflow refrigerating chamber.

The opposing party who has been shunted by branched bottom 42 flows into ice greenhouse passages 48 through the ice greenhouse of MOD 46 with air door 44.The cold air that flows into ice greenhouse passage 48 is from ice greenhouse outlet 71 ... in ice greenhouse 10, blow out, after the circulation cooled interior, flow into ice greenhouse suction inlet 84.

Microcomputer 110 drives control damper motor 46M, according to refrigerator temperature sensor 104 and ice greenhouse temperature sensor 106 temperature in the refrigerating chamber 11 of output and the temperature in the ice greenhouse 10 respectively, drive two

air doors

43,44, make and open, open and close, close open and close and close 4 kinds of states.

That is, microcomputer 110 opens and closes air door 43 according to the output of refrigerator temperature sensor 104, will remain i.e. about+5 ℃ the refrigerated storage temperature of design temperature in the refrigerating chamber 11.In addition, the output according to ice greenhouse temperature sensor 106 opens and closes air door 44, will remain the i.e. ice temperature area about 0～-3 ℃ for example of design temperature in the container 19A in the ice greenhouse 10.

In the temperature control of above-mentioned refrigerating chamber 11, microcomputer 110 is pressed the program of Figure 21 and is carried out control.Promptly, at step S1, the design temperature of refrigerating chamber 11 is set with potentiometer by the temperature of refrigerating chamber of setting loop 113 and is set (being set by voltage), at step S2, according to the output of external air temperature sensor 111, judge whether the temperature of extraneous air of refrigerator 1 placement is low.

If external air temperature is lower than+8 ℃ the time, then be judged as lowly, enter step S3, the design temperature of refrigerating chamber 11 is improved 2 ℃.Then, microcomputer 110 remains on the temperature of refrigerating chamber 11 than on the high 2 ℃ design temperature of the temperature of setting loop 113 settings.

By this control, the temperature of refrigerating chamber 11 reduces in the time of can avoiding external air temperature low, prevents that supply flume 52 from freezing.Therefore, can successfully carry out the ice making action, not need to prevent that supply flume 52 from freezing the electric heater of usefulness simultaneously, can reduce component number, save electric power, thus the attenuating expense.In addition, also can avoid the thermic load in the refrigerating chamber 11 to increase, can prevent that cooling effectiveness from reducing.

Flow into the cold air of suction inlet 61 and ice greenhouse suction inlet 84 behind the refrigerating chamber, former state ground flows in the backward channel 63, but before the refrigerating

chamber suction inlet

79 and 81 cold air that flow into, respectively by flowing into backward channels 63 in refrigerating chamber suction passage 77 and 78.A part (on a small quantity) that has flowed into the cold air in the ice greenhouse passage 48 is by in the ice greenhouse 10, and is fed directly in the refrigerating chamber suction passage 77 by access 83, with the cold air interflow back inflow backward channel 63 from suction inlet 79.

As previously mentioned, the path-length of the refrigerating chamber suction passage 77 in left side is greater than the path-length of the refrigerating chamber suction passage 78 on right side.Therefore, under identical passageway cross-sectional area and suction portion area, the flow path resistance of refrigerating chamber suction passage 77 is greater than the flow path resistance of refrigerating chamber suction passage 78, thereby the air conditioning quantity that suction inlet 79 attracts before the refrigerating chamber is less than the air conditioning quantity that suction inlet 81 attracts before the refrigerating chamber.

This sucks air conditioning quantity on the left side of refrigerating chamber 11 and right side not simultaneously, there is deviation at its position, left and right sides of cooling effect anterior in the refrigerating chamber 11, in an embodiment, the left side is colder than the right, still, and as previously mentioned, because the path basal area of the refrigerating chamber suction passage 77 in left side is greater than the path basal area of the refrigerating chamber suction passage 78 on right side, the 77A of suction portion also enlarges than the 78A of suction portion and forms, so the flow path resistance quilt of two

passages

77,78 is homogeneous basically.Therefore, toward the cold air influx homogenization basically of the preceding

suction inlet

79,81 of refrigerating chamber, refrigerated compartment 11 inside equably.

Flow into the cold air in the backward channel 63, flow into vegetable compartment passage 87, the back that descends there is discharged in the vegetable compartment 12 from vegetable compartment outlet 88.Circulation in vegetable compartment 12, cooled off in the container 18A indirectly after, be inhaled into from vegetable compartment suction inlet 92, through being formed in the vegetable compartment suction passage 91 in the lower partition wall 9, turn back to the foot in the cooling chamber 24.Then, flow into the regional 26A of cooler 26 again.

Like this, vegetables in the container 18A are preventing that dry status from can keep+about 3～+ 5 ℃ temperature, as previously mentioned, from the cold air of access 83, promptly without cold gas (by the cold air of cooler 26 coolings) the inflow backward channel of icing in greenhouse 10 and the refrigerating chamber 11 63, so, even the load in refrigerating chamber 11 and ice greenhouse 10 increases, when cold air temperature rises, also can guarantee the cooling capacity in the vegetable compartment 12.

Below, with reference to the control action of 110 pairs of automatic ice makers 21 of flowchart text microcomputer of Figure 22.Microcomputer 110 is in beginning ice making when action, at step S4 the design temperature of refrigerating chamber 13 improved 1 ℃ earlier.Freezer temperature sensor 109 is installed near the automatic ice maker 21.

That is, when the water that ice making is used is supplied with automatic ice maker 21, because near the freezer temperature sensor it 109 is applied temperature effect, so freezer temperature sensor 109 detects the temperature higher than reality.Therefore,, just become supercooled state in the refrigerating chamber 13, so during carrying out the ice making action, microcomputer 110 rises the design temperature of refrigerating chamber 13 if under this state.

Then, microcomputer 110 is carried out the ice making action at step S5.In this ice making action, the cold air in microcomputer 110 usefulness the refrigerating chambers 13 freeze the water-cooled that supplies to ice-making disc, after ice making sensor 112 detected temperature for example reach-11 ℃, through 40 minutes rear drive ice machine motor 21M, stubbornly turn round ice-making disc and deice.In addition, microcomputer 110 makes 119 heatings (ON) of feed pipe heater, prevents that feed pipe 59 from freezing.

Then, microcomputer 110 for example with (ice-making disc becomes the time of full water) driving pump motor 118 in 5 seconds, passes through feed pipe 59 the supply system ice pans with pump with the water in the supply flume 52 at step S6.Then, in the output of step S7, judge whether the temperature of ice-making disc has risen 6 ℃ according to ice making sensor 112.

Water the supply system ice pan about+3 ℃, temperature have risen after 6 ℃, return step S4, keep rise 1 ℃ state of the design temperature of refrigerating chamber 13, and execution in step S5 is to step S6 simultaneously.Above repeatedly operation generates ice.

When the water in the supply flume 52 had been used up because of above-mentioned ice making action, in the water supply action of step S6, because pump can not draw water, so the load of pump motor 118 alleviates, electrical current reduced.Microcomputer 110 when the electrical current of pump motor 118 is reduced to predetermined value, stops pump motor 118 (stopping with about 1.5 seconds) in 5 seconds through preceding pressure immediately according to the output of current detection circuit 114

Like this, the pump noise that dry run produces in the time of can lowering because of water supply.

If do not supply water to ice-making disc, the detected temperatures of ice making sensor 112 does not rise yet, so be NO at step S7, enters step S8.At step S8, judge whether this does not supply water is the 2nd time, the 1st time if the judgment is Yes, step S5～S7 repeatedly then.Even the 2nd time is not supplied water yet, enter step S8 from step S7, specifically, enter step S9 from step S8, it is empty that microcomputer 110 is judged as supply flume 52.

At step S10, close feed pipe heater 119, the design temperature of refrigerating chamber 13 is set at common state.At step S12,, judge whether the insulated door 14 of refrigerating chamber 11 is opened and closed according to the output in door switch loop 116.After, said process repeatedly before being opened and closed, the ice making action stops.

The user opens insulated door 14, puts back in the refrigerating chamber 11 after the water filling in supply flume 52, closed insulated door 14 after, microcomputer 110 is because the switching of insulated door 14 enters step S13 from step S12, and will be set in 20 minutes on the timer of oneself.

Be ON with feed pipe heater 119 once more,, count above-mentioned timing, judge at step S16 whether the counting of this timing has reached 20 minutes at step S15.Just do not turn back to step S15 ground and operate repeatedly if reach.

Through 20 minutes the time, microcomputer 110 enters step S6 from step S16 after insulated door 14 is opened and closed, with 5 second driving pump motor 118, with pump with the water in the supply flume 52 by feed pipe 59 the supply system ice pans.Then, at step S7,, judge whether the temperature of ice-making disc has risen 6 ℃ according to the output of ice making sensor 112.

Finished water filling in supply flume 52, from this supply flume 52 when automatic ice maker 21 has carried out water supply, microcomputer 110 returns step S4 from step S7 as previously mentioned, the design temperature of refrigerating chamber 13 is risen 1 ℃, and execution in step S5 begins to generate ice to step S6.

Like this and since after the insulated door 14 of refrigerating chamber 11 is opened and closed through 20 minutes after, restart the ice making action of automatic ice maker 21, so, do not need the switch of detection supply flume loading and unloading usefulness of the prior art, can reduce cost.

In addition, when water sink 52 is not by water filling even insulated door 14 opens and closes, carry out the dry run of pump at step S5, still, as previously mentioned, microcomputer 110 forces to stop pump motor 118 because of the electrical current reduction of pump motor 11, so, noise can be reduced to minimum degree.

As mentioned above,, in body of thermal insulating box, divide and form refrigerating chamber and refrigerating chamber, automatic ice maker is set in refrigerating chamber, supply flume is set in refrigerating chamber, supply water to automatic ice maker, carry out the ice making action from this supply flume according to refrigerator of the present invention; It is characterized in that, but have the controlling organization that the door of freely openable refrigerating chamber opening, the door that detects this switching open and close testing agency and control automatic ice maker; This controlling organization has the mechanism that detection has or not from the feedwater of supply flume, when along the water supply that has from supply flume, stop the ice making action of automatic ice maker, open and close testing agency from above-mentioned door and detect the moment that opens and closes of going out, make automatic ice maker restart the ice making action through after the stipulated time.So, do not need detection supply flume of the prior art to load and unload the switch of usefulness, can make automatic ice maker restart the ice making action, can significantly reduce cost.

Refrigerator according to claim 2, on the basis of foregoing invention technical scheme, it is characterized in that, have the current detecting mechanism that the water in the supply flume is supplied with pump with the electrical current that detects this pump of automatic ice maker, controlling organization turns round pump at the appointed time, supply water to automatic ice maker, simultaneously, according to the output of current detecting mechanism, when the electrical current of pump is reduced to predetermined value, stop this pump forcibly, so even door is opened and closed, supply flume is not during by water filling, also stop the dry run of pump rapidly, the noise suppression that dry run can be produced is in minimum degree.

Claims

1. a refrigerator is divided in body of thermal insulating box and is formed refrigerating chamber and refrigerating chamber, automatic ice maker is set in refrigerating chamber, and supply flume is set in refrigerating chamber, carries out and supplies water to automatic ice maker from this supply flume, and carry out the ice making action of ice making; It is characterized in that, but have the controlling organization that the door of freely openable refrigerating chamber opening, the door that detects this switching open and close testing agency and control automatic ice maker; This controlling organization has the mechanism of detecting the water supply that the supply flume of having no way of is arranged, when the water supply do not had from supply flume, stop the ice making action of automatic ice maker, open and close testing agency from above-mentioned door and detect the moment that opens and closes of going out, make automatic ice maker restart the ice making action through after the scheduled time.

2. refrigerator as claimed in claim 1, it is characterized in that, have the current detecting mechanism that the water in the supply flume is supplied with pump with the electrical current that detects this pump of automatic ice maker, controlling organization turns round pump in the given time, supply water to automatic ice maker, simultaneously, according to the output of current detecting mechanism, when the electrical current of pump is reduced to setting, stop this pump forcibly.