JPH05157422A - Refrigerator equipped with automatic ice making machine - Google Patents

Abstract

PURPOSE:To obtain a proper ice separation timing irrespective off thermal load or open air temperature by installing a timer device which starts the count from the time when water supply to an ice making saucer is completed and changing the temperature which decides the end of ice making operation in conformity with the counting time of the timer device. CONSTITUTION:A temperature sensor 10 is mounted to an ice making saucer in an ice making machine. Water supply and ice making end are detected from the output of the sensor. There is provided a timer device 32 which counts an elapsed time from the end of water supply to the ice making saucer by a water supply pump. An ice separation device 3 and the water supply pump are controlled by a control section from the output of the timer and the temperature detection sensor 10. More specifically, the water supply pump is driven until the detection temperature of the temperature detection sensor 10 exceeds a specified water supply end temperature. After the end of water supply, the ice separation device 3 is driven when the detected temperature drops to a first ice making end temperature. When the detected temperature becomes a second ice making end temperature, and what is more, the elapsed time after the end of water supply reaches a specified ice making end decision time, the separation is carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator with an automatic ice maker that automatically performs from water supply to ice removal.

[0002]

2. Description of the Related Art FIG.
It is a diagram showing a conventional automatic ice making device shown in Japanese Patent Publication,
In FIG. 48, reference numeral 1 is a refrigerator cabinet, and 2 is an ice-making chamber formed inside the refrigerator cabinet. 3 is an ice making room 2
The ice removing device disposed on the upper part of the vehicle, in detail, includes a drive unit 4 that incorporates a drive source such as a motor and a reduction mechanism (not shown) including a large number of gears, and a frame 5. As shown in FIG. 47, the ice tray 6 is accommodated and supported in the frame 5 as shown in FIG. 47, and the ice tray 6 thus supported is inverted while twisting after completion of ice making.
The ice is peeled off from the inside. Here, in detail, as shown in FIG. 49, the ice tray 6 is also formed by partitioning the inside by one vertical partition 7 and a plurality of horizontal partitions 8 to form a large number of ice recesses 9. The water supply is detected by the temperature of the ice tray 6 in the vertical partition 7 between the ice making recesses 9 at the farthest portion from the drive unit 4 (the right end in the figure) of the ice removing device 3. A temperature sensor 10 for detecting the completion of ice making is provided. Reference numeral 11 denotes a water supply device, which is a water storage tank 12 arranged outside the ice making chamber 2 as shown in FIG. 13, and a water supply device for guiding the water in the water storage tank 12 into the ice maker 5 by the operation of a pump (not shown). The pipe 13 and the tip portion 14 of the water supply pipe 13 serving as the water supply outlet are made to face one ice making recess 9 at the right end of the ice making tray 6 in FIG.
Is located on the side of the tip portion 14 (water supply outlet) of the water supply pipe 13 and, in particular, is located almost directly below it. On the other hand, reference numeral 15 is a cool air supply device, which is also described in detail in FIG. 13, and is a cooler 17 for cooling the inside of the refrigerator provided in a cooler chamber 16 in the back wall of the refrigerator cabinet 1.
And a cool air supply duct 18 which receives cool air from a cooler 17 by a fan (not shown) and guides it to the ice tray 6 portion, and the tip of the cool air supply duct 18 serving as the cool air outlet. 19 of FIG. 47 of ice tray 6
The remaining ice making recesses 9 except for the ice making recesses 9 at the right end of the center are made to face from the upper right side in the figure, so that the temperature detecting sensor 10 is provided at a portion of the cold air supply duct 18 opposite to the tip end portion 19 (cold air outlet). It is located. Incidentally, reference numeral 20 in FIG. 48 denotes an ice storage device that constitutes an ice storage unit, and this is an ice storage device 3 of the ice making chamber 2.
It is arranged so that it can go in and out at a site below.

By the way, in the case of the configuration as described above,
When the ice making operation is started as shown in FIG. 50, the water supply device 11 first supplies water into the ice tray 6 (step 101). Then, the ice tray 6 is provided with the cold air supply device 15
The temperature sensor 10 detects that water has been supplied to the ice tray 6 at the temperature by increasing the temperature by receiving the supply of the water from the state where the temperature is lowered by supplying the cool air by the ( Step 102). Therefore, based on this, the ice making process is started, and the water stored in the ice making tray 6 receives the cold air supplied from the cold air supply device 15 and gradually freezes. When the ice making is completed, the temperature sensor 10 detects the completion of the ice making by the temperature of the ice making tray 6 at that time (step 103), and the ice removing device 3 starts the operation based on it (step 1).
04). Therefore, the ice tray 6 is turned over while being twisted, and the ice inside the tray is peeled off. The ice thus peeled off falls into the ice storage device 2 and is stored therein, and the ice tray 6 is restored to its original state thereafter.
After the return of, the above operation is repeated. During the operation as described above, the temperature sensor 10 is located at the portion of the water supply device 11 on the side of the water supply port (the tip portion 14 of the water supply pipe 13). According to this configuration, when the water supply amount is small. Also,
A sufficient amount of water is always supplied to the portion where the temperature detecting sensor 10 is located, and the temperature thereof surely rises. Therefore, the temperature sensor 10 operates reliably, and prevents the ice-making from being left unstarted unlike the conventional one. Further, in this case, there is no indication that the water is running out and the user will not accidentally replenish the water, so the situation of double water supply is avoided and the problem of flooding from the ice tray 6 is solved. . Further, the temperature detecting sensor 10 is located on the side opposite to the cold air discharge port (the tip end portion 19 of the cold air supply duct 18) of the cold air supply device 15, and according to this configuration, The temperature sensor 10 is located at the latest completion point, and when the temperature sensor 10 detects the completion of the ice making, it means that the ice making of other parts is already completed. Since all the ice making is put in the ice, it is possible to prevent putting ice or water in the middle of ice making like the conventional one.

FIG. 51 is a partial vertical sectional view of another conventional refrigerator with an automatic ice maker shown in, for example, Japanese Utility Model Laid-Open No. 1-148567, FIG. 52 is an electrical control circuit configuration diagram, and FIGS.
Is a graph showing the relationship between the temperature sensor and the temperature of the water in the ice tray, and FIG. 55 is a control flow chart. In the figure, 1 is a refrigerator main body, 21 is a freezing compartment, 2 is an ice making compartment, 22 is a refrigerating compartment, and 16 is a refrigerating compartment. Cooler chamber, 17 cooler, 3 automatic ice maker, 10 temperature sensor, 6 ice tray, 23a motor cover, 20 ice storage box, 23 ice tray reversing motor,
Reference numeral 12 is a water supply tank, 24 is a water supply pump, 25 is a control device (set temperature switching means), and 26 is a drive circuit.

Next, the operation will be described. After the ice making is completed and the ice removing operation is performed, the water supply pump 24 operates to supply the water from the water supply tank 12 to the ice tray 6, and the temperature of the temperature sensor 10 also rises. After that, when the cooling operation of the refrigerator 1 is started, the air in the freezer compartment 21, the ice making compartment 2 and the refrigerating compartment 22 is sucked into the cooler compartment 16 and cooled by the cooler 17 and then distributed to each compartment through the duct. To be done. Ice making room 2
The cold air supplied to the ice tray 6, the upper surface of the water of the ice tray 6 and the temperature sensor 10 are cooled by forced convection heat transfer, and then returns to the cooler chamber 16 again. The temperature of the temperature sensor 10 is in contact with the ice tray 6 and originally it is desired that the temperature be equal to the temperature of the water in the ice tray 6, but in reality, as described above, the temperature of cold air has a large influence due to heat transfer. Normally, as shown in FIG. 53, the control device 25 judges that the ice making is completed when the temperature of the temperature sensor 10 becomes -12 ° C. or less, and the ice making plate reversing motor 27 is rotated to give an instruction through the drive circuit 16. .. During the rapid cooling operation, the ice making completion set temperature is set to −20 ° C. as shown in FIG. 54 and FIG. 55, and the water temperature in the ice making tray 6 and the temperature sensor 10 are taken into consideration so that the water in the ice making tray 6 is cooled. The ice removal operation is not performed before the ice has completely frozen.

Further, as other conventional refrigerator-freezers, Japanese Patent Laid-Open Nos. 58-127082 and 63-61868 are available.
Publication, Japanese Utility Model Publication No. 1-136867, Japanese Utility Model Publication No. 49-
Those disclosed in Japanese Patent No. 68760 and Japanese Patent Laid-Open No. 2-89973 are proposed.

[0007]

Since the conventional automatic ice making device is constructed as described above, the water supplied to the ice making machine is continuously supplied, for example, when the doors of the refrigerator are frequently opened and closed. Despite being frozen, the temperature detected by the temperature sensor, that is, the ice piece temperature, does not reach the specified ice making completion temperature, and as described above, it may be frozen depending on the refrigerator ambient temperature condition and the door open / closed state. However, there were some problems such as when ice was not released.

Further, when the heat load (opening and closing of the door, etc.) of the chambers other than the ice making chamber is large, the cooling operation is continuously performed for a long time and the state equal to the rapid cooling operation is not dealt with. Therefore, there is a problem that the ice removing operation may be performed in a state where the water in the ice tray is not completely frozen.

Further, in the conventional refrigerator with an automatic ice maker, when defrosting is started after the water supply is finished, even if the water is not supplied to the ice tray due to lack of water in the water storage tank, the temperature in the ice making room, that is, the ice making chamber, is defrosted. There was a problem that the temperature of the dish also rose and the temperature sensor mistakenly recognized that the water supply was completed. In addition, even if the temperature at which water supply is completed is set slightly higher in consideration of erroneous recognition of the temperature sensor due to the temperature rise during defrosting, the compressor may be defrosted during continuous operation due to reasons such as rapid cooling.・ When the water supply operation is performed, the temperature sensor does not obtain the expected temperature rise due to heat transfer due to cold air, and this time, on the contrary, it may mistakenly recognize that water supply is not completed despite normal water supply. was there.

The conventional control device limits the output of the relay, the phototriac, etc., but does not limit the motor of the automatic ice making device because the compressor cannot be started immediately after it is stopped. Therefore, when the motor of the automatic ice making device is in operation, the output becomes 2-3 times the maximum load at which the output is limited, and it is necessary to increase the output voltage of the transformer. As a result, the loss of the transformer and the constant voltage power supply increases, and a large radiator with good heat dissipation efficiency and a component with high withstand voltage must be used. Since the temperature rises, not only the reliability of the control device decreases, but also the board mounting area increases and the efficiency of component mounting deteriorates.

Further, in the conventional refrigerator with an automatic ice maker, impurities contained in tap water or the like settled on the water tray during ice making remain on the bottom and side surfaces of the water tray when the water is supplied by the water pump. accumulate. Due to these impurities, there have been problems such as malfunction of the automatic ice maker such as clogging of the water supply pump and deterioration of ice flavor.

[0012] Further, for example, when the number of ice removing operations is reduced when the amount of ice used in the winter is low, the number of times the water in the water tank and the water tray is exchanged is reduced, so that the water is spoiled or the water tray remains. However, there are problems such as accumulation of impurities contained in tap water due to evaporation of water, which causes malfunction of the automatic ice making machine and deterioration of ice flavor.

Furthermore, the dirt on the water tray shown above is
There was also a problem that it could not be confirmed when the water tray was installed.

Further, in the conventional purifying apparatus, when it comes out from the outlet, it is so-called delicious water, but since the water storage period in the water receiving container is irregular, if the period is long, the water is sterilized by activated carbon. Since the action is removed, there is a problem that the bacteria easily grow and become unsanitary unless care is taken.

The present invention has been made to solve the above problems, and provides a refrigerator with an automatic ice maker that can repeatedly perform ice making operations regardless of the temperature around the refrigerator and the open / closed state of the door. Also, automatic ice making that can perform the ice removing operation after the water in the ice making tray is completely frozen without being affected by the heat load outside the ice making room, and can also respond to the rapid cooling operation of the conventional device The purpose is to provide a refrigerator with a machine.

Further, the present invention provides a refrigerator with an automatic ice maker, which can always perform reliable water supply control without being affected by heat load exerted on temperature sensors such as operation / stop of compressor / operation / stop of defroster. The purpose is to get.

Further, according to the present invention, when the automatic ice making device is in operation, all the driving elements other than the compressor are stopped so that the automatic ice making device can be operated when the compressor is stopped, and the automatic ice making device is operated during the operation of the compressor. The purpose is to set a limit on the continuous operation time of the compressor when the operating conditions of the device are reached, and stop the compressor when the time exceeds the limit to operate the automatic ice making device and reduce the current at maximum load. ..

Another object of the present invention is to provide a refrigerator with an automatic ice maker which can prevent problems such as a malfunction of the automatic ice maker and deterioration of the flavor of ice.

It is another object of the present invention to provide a purifying device which prevents bacteria from growing even if water accumulates in a water receiving container irregularly.

[0020]

A refrigerator with an automatic ice maker according to claim 1 comprises a temperature sensor for detecting the temperature of an ice tray, and a control means for controlling an ice removing / water supply device or the like according to the temperature detected by the temperature sensor. In a refrigerator with an automatic ice maker, the water supply device includes a timer device that starts counting from the end of the operation, and the control means changes the temperature at which it is determined that ice making is completed according to the time counted by the timer device. ..

A refrigerator with an automatic ice maker according to claim 2 is provided with an automatic ice maker having a temperature sensor for detecting the temperature of the ice tray and a control means for controlling the ice removing / water supply device or the like according to the temperature detected by the temperature sensor. In the refrigerator, the control means switches the temperature at which the ice making is completed to a lower temperature when the falling speed of the temperature detected by the temperature sensor per unit time exceeds a set value.

A refrigerator with an automatic ice maker according to a third aspect of the present invention comprises a first temperature sensor for detecting the temperature of an ice tray and a first temperature sensor for controlling an ice removing / water supply device or the like according to the temperature detected by the first temperature sensor. Control means, a second temperature sensor for detecting the temperature of the freezer compartment, a second control means for controlling a cooling device such as a compressor according to the temperature detected by the second temperature sensor, and an integrated operation of the compressor. Defrosting device that defrosts the cooler when the time reaches a predetermined time, and prohibits the operation of the defrosting device during the operation of the deicing / water supply device and for a certain period after the end of the operation. And means.

A refrigerator with an automatic ice maker according to a fourth aspect of the present invention comprises a first temperature sensor for detecting the temperature of an ice tray and a first temperature sensor for controlling an ice removing / water supply device or the like according to the temperature detected by the first temperature sensor. Control means, a second temperature sensor for detecting the temperature of the freezer compartment, a second control means for controlling a cooling device such as a compressor according to the temperature detected by the second temperature sensor, and an operating rate of the compressor. It is characterized in that the first control means changes the temperature at which the ice making is completed in accordance with the operating rate of the compressor calculated by the operating rate calculating means.

A refrigerator with an automatic ice making machine according to a fifth aspect of the present invention comprises a compressor, a blower for supplying cold air, a damper for controlling the cold air supply amount according to a set temperature, and an electric motor for controlling an ice tray of the automatic ice making device. In a refrigerator with an automatic ice maker, which comprises a water supply pump for supplying water stored in a water supply tank to the ice tray, a drive element such as the compressor, and a drive circuit for controlling the drive element, the automatic ice maker A means for stopping other drive elements except the compressor while the device is operating, and a limit on the continuous operation time of the compressor when the operating conditions of the automatic ice making device are reached during the operation of the compressor. And means for stopping the compressor when the time limit is exceeded.

According to a sixth aspect of the present invention, there is provided a refrigerator with an automatic ice maker, which has a water storage tank and a water pan provided in the refrigerating compartment, and a water supply pump for supplying water from the water pan to the ice tray provided in the freezing compartment. In a refrigerator with a machine, an ice removing operation counting means for counting the ice removing operation of the ice making tray, a timer device for counting an ice making time from an interval of the ice removing operation, and an installation detecting means for detecting installation of the water receiving tray. ,
A control means for deciding to give a warning is provided from the number of ice removals counted by the ice removal operation counting means, the ice making time counted by the timer device, and the water tray installation detection means.

A refrigerator with an automatic ice maker according to claim 7 has a water storage tank and a water pan provided in the refrigerating compartment, and a water supply pump for supplying water from the water pan to the ice tray provided in the freezing compartment. In a refrigerator with a machine, an installation detection means for detecting installation of the water receiving tray, a warning means for giving a warning, a reflection type photosensor provided on one of the water receiving trays and having a light emitting element and a light receiving element, and the water receiving tray And a detection circuit for detecting that the incident amount of the reflected light on the light receiving element is less than or equal to a predetermined value, and a reflection section provided on the other side of the light emitting element for reflecting the light toward the light receiving element. And a control unit that determines to issue a warning based on the determination result of the circuit.

A refrigerator with an automatic ice maker according to claim 8 includes an electric pump and an ultraviolet lamp attached to a water receiving container connected to a water supply port of a water storage tank on the refrigerating compartment side of the automatic ice maker.
After the operation of the electric pump, a unit for irradiating the ultraviolet lamp at a constant time interval (T ₃ ) from a constant time period (T ₁ ) to a constant time period (T ₂ ) is provided.

A refrigerator with an automatic ice maker according to claim 9 comprises an electric pump and an ultraviolet lamp attached to a water receiving container connected to a water supply port of a water storage tank on the refrigerating compartment side of the automatic ice making device,
The door switch attached to the door of the refrigerator and, after the electric pump is operated, if the door is closed, after a fixed time (T ₁ ) and a fixed time (T ₂ ) at a fixed time interval (T ₃ ). And a means for irradiating an ultraviolet lamp.

[0029]

In the refrigerator with the automatic ice maker according to the first aspect of the present invention, the ice making completion temperature for starting ice removal is changed according to the elapsed time after water supply.

In the refrigerator with the automatic ice making machine according to the second aspect of the present invention, when the temperature drop speed of the temperature sensor is high, the ice making completion set temperature is switched to a low temperature.

In the refrigerator with an automatic ice maker according to claim 3, the correlation between the temperature rising curve of the ice tray temperature sensor after water supply and the water supply completion judgment temperature is always optimum regardless of whether the cooling / defrosting device is operated or stopped. Water supply control can be performed.

In the refrigerator with the automatic ice making machine according to the fourth aspect, the ice making completion set temperature can be switched according to the heat load while the ice making can be released after the ice making is completely completed.

In the refrigerator with the automatic ice maker of claim 5, the load current of the constant voltage power source can be reduced.

The refrigerator with an automatic ice maker according to claim 6 counts the number of times of the ice removing operation by the automatic ice maker from the time the water tray is installed to the time it is removed, and warns that the water tray and the like need to be cleaned. Therefore, it is possible to prevent the malfunction of the automatic ice maker and the deterioration of the ice flavor.

In the refrigerator with the automatic ice maker according to claim 7, since it is possible to warn that the water tray and the like need to be cleaned, it is possible to prevent malfunction of the automatic ice maker and deterioration of the flavor of ice. ..

The refrigerator with an automatic ice maker according to claim 8 has an effect of producing more delicious water.

In the refrigerator with the automatic ice maker according to claim 9, when the water accumulated in the water receiving container of the water supply device of the automatic ice maker is sterilized by the ultraviolet lamp, the ultraviolet lamp of the ultraviolet lamp is operated in conjunction with the door switch. Safety can be secured because the lighting is stopped.

[0038]

【Example】

Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. The refrigerator main body and the automatic ice making device are the same as those in the conventional example, and the description thereof will be omitted. In FIG. 1, reference numeral 10 denotes a temperature sensor attached to the ice maker 6 for detecting water supply and detecting completion of ice making depending on the temperature of the ice maker 6. Reference numeral 32 denotes a timer device which starts timing after the water supply pump (not shown) has finished its operation. Reference numeral 31 is a control unit, which is a temperature sensor 10
The detected temperature and the time measured by the timer device 32 are input and output to the ice removing device 3 and the water supply pump (not shown).

The operation of the refrigerator with an automatic ice maker constructed as described above will be described with reference to the flow chart shown in FIG. First, in step 201, water is supplied. Then step 202
Therefore, the temperature T ° C of the temperature sensor 10 is the predetermined water supply completion temperature T
Determine if it has risen above ₁ ° C. In the case of “No”, the temperature of the temperature sensor 10 is the predetermined water supply completion temperature T ₁
Wait until the temperature reaches ℃ or more, and when T ₁ ℃ or more, the water supply is completed and it is judged in step 203 that the ice making is completed. That is, after the temperature of the temperature detecting sensor 10 is once raised to T ₁ ° C or higher by the supplied water, it is then cooled and iced until it is cooled to a predetermined first ice making completion temperature T ₂ ° C or lower (step 20).
4) Not done. However, during that time, the temperature of the temperature sensor 10 reaches the predetermined second ice making completion temperature (when “Yes” in step 205), and the time t after the end of the water supply reaches the predetermined ice making completion determination time t ₀ . If (Yes at step 206), the ice is released.

The above operation will be described with reference to FIGS. 3 and 4 which are characteristic diagrams showing the relationship between the temperature of the ice tray and the temperature of the temperature detecting sensor. Figure 3
Is a characteristic diagram when the heat load as a refrigerator is relatively small,
During the period from the end of the water supply to the time t _0, the temperature of the temperature detecting sensor 10 becomes the first ice making completion temperature T ₂ ° C. or lower and the ice is released. Fig. 4 is a characteristic diagram when the refrigerator has a large heat load due to high temperature around the refrigerator and frequent opening and closing of the door. Because the cold air in the refrigerator escapes to the outside of the door due to opening and closing of the door, etc. It shows a state where the temperature does not drop to the first ice making completion temperature after the water supply is completed. In this case, the temperature of the temperature sensor is first
Even if the temperature has not fallen to the ice making completion temperature, the temperature has been lowered to the temperature at which the ice making tray is fully frozen, including the water temperature.

Example 2. In the first embodiment, the ice making completion temperature is also provided in two stages, and the temperature of the temperature detecting sensor is set to be lower than the first ice making completion temperature or set higher than the first ice making completion temperature after a lapse of a predetermined time after completion of water supply. In addition, the ice removal is performed when the temperature drops to the second ice making completion temperature. However, as shown in FIG. 5, the ice making completion temperature and the ice making completion determination time may be preset to three or more stages. Further, as shown in FIG. 6, the ice-free condition may be determined as a function of changing the ice-making completion temperature depending on the time after the end of water supply.

Example 3. Embodiment 3 of the present invention will be described below with reference to the drawings. FIG. 7 is a block diagram of an electric control circuit.
FIG. 8 is a control flow chart of the present embodiment, FIG. 9 is a characteristic diagram showing the relationship between the temperature detected by the temperature sensor and the temperature of water in the ice tray during normal operation, and FIG.

Next, the operation will be described. In the case of normal cooling operation, the difference between the temperature of the water in the ice tray 6 and the temperature detected by the temperature sensor 10 is not so large as shown in FIG. If the difference is within 6 deg, the ice removing operation is performed by considering that the ice making is completed when the temperature of the temperature sensor 10 reaches −12 ° C. as in this embodiment (the actual ice temperature is −5 ° C.). By doing so, all the water in the ice tray 6 can be dropped into the ice storage box 20 as ice. However, for example, when the doors of the chambers other than the ice making chamber 2 are opened or closed as shown in FIG. 10 or a special operation mode such as a rapid cooling operation is performed, the cooling operation is continuously performed for a long time. Therefore, the temperature of the water in the ice tray 6 and the temperature sensor 1
The temperature difference from 0 becomes larger than that at the normal time, and the temperature of the temperature sensor 10 reaches −12 ° C. even if all the water in the ice tray 6 is not frozen. Therefore, the temperature drop speed of the temperature sensor 10 from the start of ice making to -12 ° C. is calculated in the control device from the temperature drop amount ΔT in the minute time Δt by v = ΔT / Δt, and the value v is set. When the value is larger than the value V, the ice making completion set temperature is switched to −20 ° C. in this embodiment, so that the water in the ice making tray 6 is completely frozen and the ice removing operation can be performed.

In the control flowchart of FIG. 8, the temperature drop speed of the temperature sensor 10 is calculated in step 300, and the value v = ΔT is calculated in step 301.
When / Δt is larger than the set value V, the routine proceeds to step 303, where the ice making completion set temperature is lowered.

Example 4. In the third embodiment described above, it was estimated that the cooling operation was continuous for a long time by calculating the temperature drop speed of the temperature sensor 10. However, the continuous operation time of the direct cooling operation was measured and the time was set to a certain set value W. Even when the temperature exceeds the set temperature, the same effect as that of the third embodiment can be obtained by switching to lower the set temperature for completion of ice making.
FIG. 11 shows the control flowchart. In Figure 11,
As shown, when the continuous time T _C of the cooling operation exceeds a certain set time W, the ice making completion set temperature is set to −20 ° C. in step 401 of FIG. By proceeding to step 406, the ice removing operation can be performed after the water in the ice tray 6 is completely frozen.

Example 5. Embodiment 5 of the present invention will be described below with reference to the drawings. In FIG. 12, reference numeral 60 denotes a first temperature sensor attached to the ice tray 6 for performing water supply detection and ice making completion detection based on the temperature of the ice tray 6. Reference numeral 71 denotes a first control unit which receives the temperature detected by the first temperature sensor 60 as an input and outputs it to the ice removing device 53 and the water supply device 61. 6
7 is a second temperature sensor provided in the freezer compartment for detecting the indoor temperature, 66 is a defrosting heater for removing the frost adhering to the cooler 17, and 69 is attached to the upper side of the cooler 17 to detect the defrosting temperature. The third temperature sensor 72, which receives signals from the second temperature sensor 67, the third temperature sensor 69, and the first controller 71, receives the fan motor 65 and the compressor 7.
0 is a second controller that outputs to the defrosting heater 66. FIG. 13 shows a control flowchart of the fifth embodiment, and FIG.
FIG. 8 is a characteristic diagram showing the relationship between the temperature detected by the first temperature sensor 71 and the temperature of water in the ice tray 6 according to the fifth embodiment.

The operation of the refrigerator with an automatic ice maker constructed as described above will be described with reference to the flow chart shown in FIG.
The temperature T _{2 of} the second temperature sensor 67 installed in the freezer compartment
Is -15 ° C or higher (step 131), the compressor 7
0 and the fan motor 65 are turned on (step 132,
133). Then, the operation integration timer t ₂ of the compressor 70 is operated. Further, the temperature of the second temperature sensor 67 is -21
If the temperature is less than or equal to ℃ (step 135), the compressor 70 and the fan motor 65 are turned off (steps 136 and 137), and the second
Temperature T ₂ of the temperature sensor 67 of -21 ° C <T ₂ <15
If the temperature is ° C, the compressor 70 and the fan motor 65 are maintained as they are. If the accumulated operation time t ₂ of the compressor 70 is y hours or more and the detection temperature T _{3 of} the third temperature sensor 69 that detects the defrosting temperature is 8 ° C. or less, the defrosting heater 6
6 is turned on (steps 138 to 140). Also t ₂
If the detected temperature T _{3 of} the third temperature sensor 69 is T ₃ > 8 ° C. for more than y hours, it is not necessary to defrost, so the timer t ₂ is reset and the process returns to the main routine (step 138, 139,143). In step 140, the defrost heater 66 is turned on, and the third temperature sensor 69 is set to 14
When the temperature exceeds ℃, the defrosting is terminated, the defrosting heater 66 is turned off, the timer t ₂ is reset, and the process returns to the main routine (steps 141, 142, 143). Turn on / off the compressor 70, fan motor 65, and defrost heater 66 in a subroutine
After F is determined, if the detection temperature T _{1 of} the first temperature sensor 60 that detects the temperature of the ice tray 6 is T ₁ > -12 ° C, the ice making is completed, and the compressor 70, the fan motor 65, and the subroutine are again executed. ON / OFF of the defrosting heater 66 is determined (step 114). If the detected temperature T _{1 of} the third temperature sensor 69 is T ₁ ≦ −12 ° C., it is determined that the ice making is completed, and the compressor 70 is turned on regardless of whether the compressor 70, the fan motor 65, and the defrost heater 66 are ON / OFF. , The fan motor 65 is forcibly turned on, and the defrost heater 66 is forcibly turned off (steps 114 to 117). Then, the ice-ice device 53 and the water supply device 61 are operated (step 11
8, 119). When the temperature T ₁ of the ice tray 56 detected by the first temperature sensor 60 is T ₁ ≧ −5 ° C., it is determined that water supply is completed, the t ₁ timer that counts the time after water supply is cleared, and the process returns to the subroutine ( Steps 120, 123).
The temperature T ₁ detected by the first temperature sensor 60 is T ₁ <−5 ° C.
If so, the t ₁ timer that counts the time after water supply is operated (steps 120 and 121). And until counts a predetermined time x there is t ₁ timer, although the detected temperature T ₁ of the first temperature sensor 60 to determine whether the T ₁ ≧ -5 ° C. (step 120 to 122), t ₁ > X
If so (step 122), the water supply is not completed and the t ₁ timer is cleared and the process returns to the subroutine.

The above operation will be described with reference to FIG. 15 which is a characteristic diagram showing the relationship between the temperature detected by the first temperature sensor 60 and the temperature of the water in the ice tray 6. When the temperature T ₁ detected by the first temperature sensor 60 becomes T ₁ <-12 ° C, ice removal and water supply are performed and water is supplied to the ice tray 6, so the temperature of the first temperature sensor 60 also gradually rises. .. At this time, the compressor 70 is forcibly operated and the defrosting heater 66 is forcibly stopped, so that the heat load is stable and the temperature curve of the first temperature sensor 60 is substantially constant. .. In the conventional case, even if the ice tray 6 is not supplied with water, the defrosting heater 66 operates to raise the temperature of the first temperature sensor 60, so that it is erroneously detected that water has been supplied.

Example 6. In the fifth embodiment described above,
Defrost heater 66 during the water supply operation and for a certain period after the operation is completed
Although the compressor 70 was forced to operate when the operation was stopped forcibly, the compressor 7
If 0 is operating, the compressor 70 may be forcibly operated as it is, and if the compressor 70 is stopped, it may be forcibly stopped as it is. The temperature detected by the sensor 60 is slightly different as shown in FIG.
It may be changed by operating / stopping the compressor 70 as shown in the flowchart of FIG.
~ 153).

Example 7. Embodiment 7 of the present invention will be described below with reference to the drawings. The refrigerator main body and the automatic ice making device are the same as those in the conventional example, and the description thereof will be omitted. In FIG. 17, 6
Reference numeral 0 denotes a first temperature sensor attached to the ice tray 6 for detecting water supply and detecting completion of ice making based on the temperature of the ice tray 6. Reference numeral 73 is an operating rate calculation device that calculates the operating rate of the compressor 70 after the water supply pump 61 has finished operating. 71
Is a first control unit, which receives the detected temperature of the first temperature sensor 60 and the operation rate calculated by the operation rate calculation device 73,
Output to the ice removing device 53 and the water supply pump 61. 67 is a second temperature sensor that is installed in the freezer compartment and detects the temperature of the freezer compartment, and the second controller 72 is the second temperature sensor 67.
The temperature detected by is input and output to the compressor 70. FIG. 18 shows a control flow chart of the seventh embodiment, FIG. 19 is a normal time, and FIG. 20 is a temperature detected by the first temperature sensor 60 during continuous operation of the compressor, the temperature of water in the ice tray 6 and the compressor. It is a characteristic view which shows the relationship with the driving | running state of 70.

Next, the operation will be described. In the case of the normal cooling operation, the difference between the temperature of the water in the ice tray 6 and the temperature detected by the first temperature sensor 60 is not so large as shown in FIG. If the difference is within 6 deg, the first
When the temperature detected by the temperature sensor 60 of FIG. 2 reaches −12 ° C. as in the present embodiment, the ice making operation is performed by determining that the ice making is completed (the actual temperature of the ice is −5 ° C.). The water in 6 can be dropped into the ice storage box 20 as frozen ice. However, when the door (not shown) of the freezer compartment is frequently opened or closed as shown in FIG. 20, or when a special operation mode such as quick cooling operation is entered, the compressor 70 is continuously operated for a long time. Since the cooling operation is performed, the temperature difference between the temperature of the water in the ice tray 6 and the first temperature sensor 60 becomes larger than that at the normal time, and even if the water in the ice tray 6 is not entirely frozen. The temperature of the first temperature sensor 60 reaches -12 ° C. Therefore, the calculation of the operating rate of the compressor 70 is started (step 169 → 170 → 161) from the end of the water supply operation (that is, the start of ice making), and the operating rate A (%) is higher than a certain set value B (%). If (YES in step 162), the ice making completion set temperature is switched to −20 ° C. in this embodiment (step 163).
As a result, the water in the ice tray 6 is completely frozen and the ice removing operation can be performed (steps 165 to 167). In addition, since the operation rate of the compressor 70 up to the previous time is cleared once at the end of the water supply operation (step 169), the continuous operation of the compressor 70 is canceled and the normal operation is performed (step 16).
2 (“NO” in 2), the ice making completion temperature can be returned to −12 ° C.

Example 8. In the seventh embodiment, the ice making completion temperature is provided in two stages, and the ice making completion temperature is switched by comparing the operation rate of the compressor 70 with a certain set value B%, but as shown in FIG. The completion temperature and the operation rate of the compressor 70 may be preset in three or more stages. Further, as shown in FIG. 22, the ice making conditions may be set as a function of changing the ice making completion temperature depending on the operation rate of the compressor 70 after the end of the water supply operation.

Example 9. Further, although the case where the operation rate of the compressor 70 is cleared at the end of the water supply operation has been described in the eighth embodiment, it may be cleared at the end of the ice removing operation, and the same effect as that of the eighth embodiment is achieved.

Example 10. Hereinafter, Example 10 of the present invention
Referring to the figure, the program stored in the ROM (not shown) arranged in the microcomputer is changed.

The operation of the tenth embodiment of the present invention will be described with reference to the schematic flowchart of FIG. First, step 1
At 71, it is determined whether the automatic ice making device is operating, and if it is operating (F = 1), the process proceeds to step 176.
The drive elements such as the compressor, blower, and damper are turned off and stopped. If automatic ice making is stopped in step 171, the process proceeds to step (172) (F = 0), and if there is a request for ice removal, the process proceeds to step 173. In step 173, if the compressor is in operation, proceed to step 174. If in step 174 the operating time of the compressor exceeds a certain time, proceed to step 175 to stop the compressor and operate the automatic ice making device. Let

Example 11. Hereinafter, Example 11 of the present invention
Will be described with reference to FIG. FIG. 24 is a block diagram of control. The ice separating device 3 is arranged in the ice making chamber and is controlled by the control device 31. The control device 31 includes a counter that counts the number of times the ice removing device is driven (n) from when the water tray is installed to when it is removed, and a timer that counts the ice making time (t) from the ice removing operation to the ice removing operation. Hold. Reference numeral 82 denotes a display device that turns on or off in response to a signal from the control device 31, and operates by an input from the control device 31. Reference numeral 83 denotes a switch that detects that a water tray is installed, and is configured to output a signal to the control device 31.

Next, the operation of the refrigerator with an automatic ice maker constructed as described above will be described with reference to the flowchart of FIG. First, in step 201, it is detected that the water tray is installed, and if it is determined in step 202 that a warning is displayed, the display device 82 is turned on in step 203. After that, when it is determined in step 204 that the water tray is not installed, the display device in step 205 is turned off, and this control is repeated.

The warning determination in step 202 will be described in detail with reference to the flowchart of FIG. First, step 206
When it is detected that the water tray is installed in step S207, it is determined in step 207 whether the ice making time (t) counted by the timer in the control device 31 exceeds the specified time (T). If it exceeds, it is decided to give a warning in step 210. Next, when it is determined in step 208 that the ice removing operation is being performed, step 20 is further performed.
At 9, it is determined whether the counter for counting the number of ice making times (n) in the control device 31 has exceeded the prescribed number of times (N),
If it exceeds, it is decided to give a warning in step 210. If the water tray has been removed in step 206, the ice making time (t) by the timer in the controller 31 and the number of ice making times (n) by the counter in the controller 31 are reset to initial values in step 211. On the other hand, if the ice removing operation is not performed in step 208, or if the number of ice making times (n) does not reach the specified value (N) in step 209, the above determination is repeated as it is. n) That is, the number of times of water supply is the prescribed number (N)
When the ice making time (t) exceeds the specified time (T) and it is determined that the water in the water receiving tray has been left for a long time, a warning can be issued by the display device.

Example 12 Hereinafter, Example 12 of the present invention
Will be described with reference to FIG. FIG. 27 is a block diagram of control. The ice separating device 3 is arranged in the ice making chamber and is controlled by the control device 31. Reference numeral 82 denotes a display device that turns on or off in response to a signal from the control device 31, and operates by an input from the control device 31. Reference numeral 83 is a switch that detects that a water tray is installed, and outputs a signal to the control device 31. Reference numeral 84 is a detection device for detecting dirt on the water tray, and is configured to output a signal to the control device 31.

Next, the operation of the refrigerator with an automatic ice maker configured as described above is the same as that in the flow chart of FIG.

The determination of the warning in step 202 will be described in detail with reference to the flowchart of FIG. First, step 216
When it is detected that the water tray is installed at step 217, the degree of dirt in the water tray is determined at step 217, and if it is determined that the water tray is more dirty than the prescribed degree, step 218.
Decide to give a warning at. If the water tray is not installed in step 216, and if the degree of dirt in the water tray does not exceed the specified value in step 217,
Return to the start and repeat the above judgment.

Next, the water tray dirt detection device will be described in detail with reference to FIG. Reference numeral 95 is a reflection type photo sensor installed in the water tray, and is composed of a light emitting element 95a and a light receiving element 95b. On the other side of the water tray, a reflecting portion (not shown) for reflecting the light from the light emitting element 95a toward the light receiving element 95b is installed. The light emitted from the light emitting element 95a is reflected by the reflecting portion and enters the light receiving element 95b.
At this time, the voltage applied to the inverting input terminal (-) of the comparator 98 is determined by the voltage applied to the light receiving element 95b. If this voltage is lower than the input voltage to the positive phase input terminal (+) determined by the resistance of 96a and 96b,
The signal of "H" is output from the output terminal, and when it is high, it is "L"
Signal is output. The output "H" or "L" signal is processed by the control device 31 and the microcomputer installed therein. Since the voltage of the light receiving element 95b increases as the photocurrent due to the light from the light emitting element 95a increases, the surrounding resistance is adjusted so that the reflected light incident on the light receiving element 95a due to the contamination of water or the water tray is attenuated. A signal of "H" can be output to the control device 31 when the value exceeds a certain value.

Example 13 Hereinafter, Example 13 of the present invention
Will be described with reference to FIG. 30 and 31, reference numeral 1 denotes a refrigerator main body, and a water storage tank 12, an electric pump 24, and a water supply pipe 13, an ice tray 6, and an ice storage device 20 including an ice storage box 20 are arranged behind the refrigerator compartment 22. 39 is a water storage tank 1
A water purifier provided in 2 and a bag body 4 in which activated carbon 45 is enclosed.
4 is fixed by the container 40 and the cap 41 and the water storage tank 2
It is set to 0. Receiving the water tank 20,
The water receiving container 49 is provided so as to always maintain a constant water level, and additionally receives the electric pump 24, the ultraviolet lamp 50, and the lamp cover 51. The UV lamp 50 may be on or in water, and the lamp cover 5
No. 1 is installed at a position where the light from the lamp is hard to directly hit other plastic parts. Since this embodiment is configured as described above, when the water in the water storage tank 12 passes through the water purifying device 39, the chlorine content in the water is removed by the activated carbon 45 and becomes so-called delicious water, which flows out from the outlet 48.
It accumulates in the water receiving container 49 at a constant water level. The water can be sterilized by the ultraviolet lamp 50. Then, the sterilized water is made into ice through the electric pump 24 and the water supply pipe 13.

32 to 34 are time charts, circuit diagrams, and flow charts of this control. Generally, the life of the ultraviolet lamp is said to be 2000 hours, which is overwhelmingly shorter than the life of the refrigerator (assuming 10 years) of 87600 hours, and it is necessary to extend it by a control method. Therefore, as shown in FIG. 32, after the electric pump 24 is supplied with water, the lamp is irradiated every T ₃ hours with a width of T ₂ hours after the lapse of T ₁ hours. When water is supplied, the time is cleared, and after the elapse of T ₁ time again, the lamp is intermittently irradiated. By this control, the service life of the ultraviolet lamp installed in the refrigerator can be extended to the service life of the refrigerator. FIG. 33 is a circuit diagram of a portion related to the thirteenth embodiment, in which the electric pump 24 and the ultraviolet lamp 50 are connected from the control board 52 connected to the outlet 53. FIG. 34 is a flow chart showing the control timing in a flow.

Example 14 In addition, in Example 13 described above, only the ultraviolet rays are generated, but by stirring the water accumulated in the water receiving container 49, it is possible to further suppress the generation of bacteria and algae. When the electric pump 24 is momentarily rotated, the water rises up to the middle of the water supply pipe 13, and then the water flows back into the water receiving container 49, and the water flow at that time can stir the water. When the electric pump 24 rotates, the water level in the water receiving container 49 temporarily drops and water enters from the outlet 48 of the cap, but since the time is short, there is almost no problem with the total amount. 35 and 36 are time charts and flowcharts of the control, the operation is performed for T ₄ hours at almost the same time (or after a while) with the timing of ultraviolet ray generation.

Example 15 Although the ultraviolet lamp was used for sterilization in the above-mentioned Example 14, an ozonizer may be used. As shown in FIG. 37, the ultraviolet lamp 50
Instead, an ozone generator including an ozonizer terminal 56 and a high-voltage power supply 57 can be attached to obtain the same effect.

Example 16. Hereinafter, Example 16 of the present invention
Will be described with reference to the drawings. In FIGS. 38 and 39, reference numeral 1 is a refrigerator main body, and an ice making device formed by a water storage tank 12, an electric pump 24, a water supply pipe 13, an ice tray 6, and an ice storage box 20 is arranged at the back of the refrigerator compartment 22. Further, the door switch 58 is arranged on the front surface of the divider and divider in the freezer compartment and the refrigerator compartment. Reference numeral 39 denotes a water purifying device provided in the water storage tank 12. The bag body 44 enclosing the activated carbon 45 is fixed by the container 40 and the cap 47, and is arranged in the water storage tank 12. It is the water receiving container 49 that receives the water storage tank 12.
In order to maintain a constant water level at all times, the electric pump 24, the ultraviolet lamp 50 and the lamp cover 5 are also provided.
I have received 1. UV lamp 50 is a door switch 58
The lamp cover 51 is installed at a position where the light from the lamp does not easily interfere with other plastic parts.

Since the sixteenth embodiment is constructed as described above, when the water in the water storage tank 12 passes through the water purifying device 39, chlorine in the water is removed by the activated carbon 45, so-called delicious water is formed and the outlet is formed. It flows out from 48 and accumulates in a water receiving container 49 at a constant water level. The water is UV lamp 5
It can be sterilized at 0. Then, the sterilized water is guided to the ice tray through the electric pump 24 and the water supply pipe. Also, considering the effect of ultraviolet rays on the human body, the lamp is turned off by the door switch when the door is open.

40 to 42 show the timing of this control, the circuit diagram and the flow chart. Generally, it is said that the life of the ultraviolet lamp is 2000 hours, which is overwhelmingly shorter than the life of the refrigerator (provisionally 10 years) of 87600 hours, and it is necessary to extend it by a control method.
Therefore, as shown in FIG. 40, after the electric pump 24 is supplied with water, T ₁
After the lapse of time, the lamp is turned on every T ₃ hours with a width of T ₂ hours. By this control, the life of the ultraviolet lamp can be extended to the life of the refrigerator.

However, the irradiation of light is stopped when the door is open due to the harmfulness of the lamp. FIG. 41 is a circuit diagram of a portion related to this embodiment. From the control board 52 connected to the outlet 63, the electric pump 24 and the ultraviolet lamp 5 are connected.
0 and the door switch 58 are connected. FIG. 42 is a flow chart showing the control flow.

Example 17 In the sixteenth embodiment, the door switch 58 interlocks with the lamp to turn the lamp on and off.
Although F is controlled, a limit switch 59 is provided on a part of the fixed side of the removable water receiving container 49 as shown in FIG. 46, and the water receiving container 49 is disengaged from the fixed portion (there is no container). When this happens, turn off the lamp.

The control timing, the circuit diagram and the flow chart are shown in FIGS. The control method is almost the same as that in the sixteenth embodiment, and FIG. 43 shows the control timing. FIG. 44 is a circuit diagram relating to this embodiment. From the control board 52 connected to the outlet 63, the electric pump 24, the ultraviolet lamp 50 and the door switch 5 are connected.
9 is connected. FIG. 45 is a flow chart showing the control flow.

[0073]

The present invention has the following effects.
The refrigerator with an automatic ice maker according to claim 1, wherein the refrigerator with an ice maker has a temperature sensor for detecting the temperature of the ice tray, and a control means for controlling the ice removing / water supply device or the like according to the temperature detected by the temperature sensor. Since the water supply device is provided with a timer device that starts counting from the end of the operation, the control means is configured to change the temperature to determine that the ice making is completed according to the time the timer device is counting,
Regardless of the operating condition of the refrigerator, the load, and the temperature of the outside air, ice removal can always be performed at appropriate times.

A refrigerator with an automatic ice maker according to claim 2 is provided with an automatic ice maker having a temperature sensor for detecting the temperature of the ice tray and a control means for controlling the ice removing / water supplying device or the like according to the temperature detected by the temperature sensor. In the refrigerator, since the control means is configured to switch the temperature for judging completion of ice making to a lower temperature when the falling speed of the temperature detected by the temperature sensor per unit time exceeds a certain set value, The ice-making completion set temperature can be switched according to the state of the heat load, as well as the ice can be released after the completion of the ice-making.

A refrigerator with an automatic ice maker according to a third aspect of the present invention comprises a first temperature sensor for detecting the temperature of an ice tray and a first temperature sensor for controlling an ice removing / water supply device or the like according to the temperature detected by the first temperature sensor. Control means, a second temperature sensor for detecting the temperature of the freezer compartment, a second control means for controlling a cooling device such as a compressor according to the temperature detected by the second temperature sensor, and an integrated operation of the compressor. Defrosting device that defrosts the cooler when the time reaches a predetermined time, and prohibits the operation of the defrosting device during the operation of the deicing / water supply device and for a certain period after the end of the operation. Since the structure is provided with means, the correlation between the temperature rise curve of the ice tray temperature sensor after water supply and the water supply completion judgment temperature always provides optimum and reliable water supply control regardless of whether cooling or defrosting is operated or stopped. be able to.

According to another aspect of the present invention, there is provided a refrigerator with an automatic ice maker, a first temperature sensor for detecting a temperature of an ice tray, and a first temperature sensor for controlling an ice removing / water supplying device or the like according to a temperature detected by the first temperature sensor. Control means, a second temperature sensor for detecting the temperature of the freezer compartment, a second control means for controlling a cooling device such as a compressor according to the temperature detected by the second temperature sensor, and an operating rate of the compressor. Since the first control means is configured to change the temperature at which the ice making is completed in accordance with the operating rate of the compressor calculated by the operating rate calculating means, the ice making The ice-making completion set temperature can be switched according to the heat load as well as the ice can be released after the completion of the ice-making.

According to a fifth aspect of the present invention, there is provided a refrigerator with an automatic ice maker, a compressor, a blower for supplying cold air, a damper for controlling the cold air supply amount according to a set temperature, and an electric motor for controlling an ice tray of the automatic ice maker. In a refrigerator with an automatic ice maker, which comprises a water supply pump for supplying water stored in a water supply tank to the ice tray, a drive element such as the compressor, and a drive circuit for controlling the drive element, the automatic ice maker A means for stopping other drive elements except the compressor while the device is operating, and a limit on the continuous operation time of the compressor when the operating conditions of the automatic ice making device are reached during the operation of the compressor. And a means for stopping the compressor when the time limit is exceeded, the load current of the constant voltage power source can be reduced.

A refrigerator with an automatic ice maker according to claim 6 is an automatic ice maker having a water storage tank and a water tray provided in the refrigerating compartment, and a water supply pump for supplying water from the water tray to the ice tray provided in the freezer compartment. In a refrigerator with a machine, an ice removing operation counting means for counting the ice removing operation of the ice making tray, a timer device for counting an ice making time from an interval of the ice removing operation, and an installation detecting means for detecting installation of the water receiving tray. ,
Since the number of ice-breaks counted by the ice-breaking operation counting means, the ice-making time counted by the timer device, and the water-dish pan installation detection means are included in the control means for determining a warning. , It is possible to count the number of ice removal operations by the automatic ice maker from the time the water tray is installed to the time it is removed, and to warn that the water tray needs to be cleaned. It is possible to prevent deterioration of flavor and the like.

A refrigerator with an automatic ice maker according to claim 7 is an automatic ice maker having a water storage tank and a water tray provided in the refrigerating compartment, and a water supply pump for supplying water from the water tray to the ice tray provided in the freezing compartment. In a refrigerator with a machine, an installation detection means for detecting installation of the water receiving tray, a warning means for giving a warning, a reflection type photosensor provided on one of the water receiving trays and having a light emitting element and a light receiving element, and the water receiving tray And a detection circuit for detecting that the incident amount of the reflected light on the light receiving element is less than or equal to a predetermined value, and a reflection section provided on the other side of the light emitting element for reflecting the light toward the light receiving element. Since it is configured with a control means that determines whether to give a warning from the judgment result of the circuit, it can warn that it is necessary to clean the water tray, etc. It is possible to prevent the deterioration.

A refrigerator with an automatic ice maker according to claim 8 includes an electric pump and an ultraviolet lamp attached to a water receiving container connected to a water supply port of a water storage tank on the refrigerating compartment side of the automatic ice making device,
After the operation of the electric pump, a unit for irradiating the ultraviolet lamp at a constant time interval (T ₃ ) from a constant time period (T ₁ ) to a constant time period (T ₂ ) is provided, so that more delicious water can be obtained. Has the effect of making ice.

A refrigerator with an automatic ice maker according to claim 9 comprises an electric pump and an ultraviolet lamp attached to a water receiving container connected to a water supply port of a water storage tank on the refrigerating compartment side of the automatic ice making device,
The door switch attached to the door of the refrigerator and, after the electric pump is operated, if the door is closed, after a fixed time (T ₁ ) and a fixed time (T ₂ ) at a fixed time interval (T ₃ ). Because it has a structure that irradiates with an ultraviolet lamp, when sterilizing the water accumulated in the water receiving container of the water supply device of the automatic ice making machine with the ultraviolet lamp, the ultraviolet lamp is linked with the door switch when the door is open The safety can be secured by stopping the lighting of.

[Brief description of drawings]

FIG. 1 is a control block diagram of a refrigerator with an automatic ice maker according to a first embodiment of the present invention.

FIG. 2 is a flowchart of the refrigerator with the automatic ice maker according to the first embodiment of the present invention.

FIG. 3 is a characteristic diagram of the refrigerator with the automatic ice maker according to the first embodiment of the present invention.

FIG. 4 is a characteristic diagram of the refrigerator with the automatic ice maker according to the first embodiment of the present invention.

FIG. 5 is an ice making completion temperature characteristic diagram of a refrigerator with an automatic ice maker according to a second embodiment of the present invention.

FIG. 6 is an ice making completion temperature characteristic diagram of the refrigerator with the automatic ice maker according to the second embodiment of the present invention.

FIG. 7 is a control block diagram of a refrigerator with an automatic ice maker according to a third embodiment of the present invention.

FIG. 8 is a flow chart of a refrigerator with an automatic ice maker according to a third embodiment of the present invention.

FIG. 9 is a time chart of the refrigerator with the automatic ice maker according to the third embodiment of the present invention.

FIG. 10 is a time chart of the refrigerator with the automatic ice maker according to the third embodiment of the present invention.

FIG. 11 is a flow chart of a refrigerator with an automatic ice maker according to a fourth embodiment of the present invention.

FIG. 12 is a control block diagram of a refrigerator with an automatic ice maker according to a fifth embodiment of the present invention.

FIG. 13 is a flow chart of a refrigerator with an automatic ice maker according to a fifth embodiment of the present invention.

FIG. 14 is a flowchart of a refrigerator with an automatic ice maker according to a sixth embodiment of the present invention.

FIG. 15 is a time chart of the refrigerator with the automatic ice maker according to the fifth embodiment of the present invention.

FIG. 16 is a time chart of the refrigerator with the automatic ice maker according to the sixth embodiment of the present invention.

FIG. 17 is a control block diagram of a refrigerator with an automatic ice maker according to a seventh embodiment of the present invention.

FIG. 18 is a flow chart of a refrigerator with an automatic ice maker according to Embodiment 7 of the present invention.

FIG. 19 is a time chart of the refrigerator with the automatic ice maker according to Embodiment 7 of the present invention.

FIG. 20 is a time chart diagram of the refrigerator with the automatic ice maker according to Embodiment 7 of the present invention.

FIG. 21 is an ice making completion temperature characteristic diagram of the refrigerator with the automatic ice maker according to Embodiment 8 of the present invention.

FIG. 22 is an ice making completion temperature characteristic diagram of the refrigerator with the automatic ice maker according to Embodiment 8 of the present invention.

FIG. 23 is a schematic flowchart of Embodiment 10 of the present invention.

FIG. 24 is a control block diagram of a refrigerator with an automatic ice maker according to Embodiment 11 of the present invention.

FIG. 25 is a flow chart of a refrigerator with an automatic ice maker according to Embodiment 11 of the present invention.

FIG. 26 is a flow chart diagram of a refrigerator with an automatic ice maker according to Embodiment 11 of the present invention.

FIG. 27 is a control block diagram of a refrigerator with an automatic ice maker according to Embodiment 12 of the present invention.

FIG. 28 is a flow chart diagram of a refrigerator with an automatic ice maker according to Embodiment 12 of the present invention.

FIG. 29 is a circuit diagram of a water tray dirt detection device according to a twelfth embodiment of the present invention.

FIG. 30 is a vertical sectional view of a refrigerator with an automatic ice maker according to Embodiment 13 of the present invention.

FIG. 31 is a cross-sectional view of a water supply container portion of a refrigerator with an automatic ice maker according to Embodiment 13 of the present invention.

FIG. 32 is a time chart diagram of the refrigerator with the automatic ice maker according to Embodiment 13 of the present invention.

FIG. 33 is a circuit diagram of a refrigerator with an automatic ice maker according to Embodiment 13 of the present invention.

FIG. 34 is a flow chart diagram of a refrigerator with an automatic ice maker according to Embodiment 13 of the present invention.

FIG. 35 is a time chart diagram of the refrigerator with the automatic ice maker according to Embodiment 14 of the present invention.

FIG. 36 is a flow chart diagram of a refrigerator with an automatic ice maker according to Embodiment 14 of the present invention.

FIG. 37 is a cross-sectional view of a water supply container portion of a refrigerator with an automatic ice maker according to Embodiment 15 of the present invention.

FIG. 38 is a vertical sectional view of a refrigerator with an automatic ice maker according to Embodiment 16 of the present invention.

FIG. 39 is a sectional view of a water supply container portion of a refrigerator with an automatic ice maker according to Embodiment 16 of the present invention.

FIG. 40 is a time chart diagram of the refrigerator with the automatic ice maker according to Embodiment 16 of the present invention.

FIG. 41 is a circuit diagram of a refrigerator with an automatic ice maker according to Embodiment 16 of the present invention.

FIG. 42 is a flow chart of a refrigerator with an automatic ice maker according to Embodiment 16 of the present invention.

FIG. 43 is a time chart diagram of the refrigerator with the automatic ice maker according to Embodiment 17 of the present invention.

FIG. 44 is a circuit diagram of a refrigerator with an automatic ice maker according to Embodiment 17 of the present invention.

FIG. 45 is a flow chart of a refrigerator with an automatic ice maker according to Embodiment 17 of the present invention.

FIG. 46 is a cross-sectional view of the water supply container portion of the refrigerator with the automatic ice maker according to Embodiment 17 of the present invention.

FIG. 47 is a partial vertical cross-sectional view of a conventional refrigerator with an automatic ice maker.

FIG. 48 is a partial vertical cross-sectional view of a conventional refrigerator with an automatic ice maker.

FIG. 49 is a perspective view of an ice tray of a conventional refrigerator with an automatic ice maker.

FIG. 50 is a flowchart of a conventional refrigerator with an automatic ice maker.

FIG. 51 is a partial cross-sectional view of a conventional refrigerator with an automatic ice maker.

FIG. 52 is a flowchart of a conventional refrigerator with an automatic ice maker.

FIG. 53 is a time chart diagram of a conventional refrigerator with an automatic ice maker.

FIG. 54 is a time chart diagram of a conventional refrigerator with an automatic ice maker.

FIG. 55 is a flowchart of a conventional refrigerator with an automatic ice maker.

[Explanation of symbols]

 3 Ice removing device 6 Ice tray 10 Temperature sensor 11 Water supply device 12 Water storage tank 13 Water supply pipe 20 Water storage box 22 Refrigerator 24 Electric pump 31 Control part (control means) 32 Timer device 39 Water purification device 40 Container 41 Flange part 42 Inlet 43 Flow Outlet 44 Bag 45 Activated carbon 47 Cap 48 Outlet of cap 49 Water receiver 50 UV lamp 51 Lamp cover 52 Control board 53 Ice removing device 56 Ozonizer terminal 57 High voltage power supply 58 Door switch 59 Limit switch 60 First temperature sensor 61 Water supply device 63 Outlet 65 Fan motor 66 Defrost heater 67 Second temperature sensor 69 Third temperature sensor 70 Compressor 71 First control unit 72 Second control unit 73 Operating rate calculation device 82 Display device 83 Water tray detection Switch 84 water Saucet dirt detection device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroto Kawahira 3-18-1 Ogashi, Shizuoka City Mitsubishi Electric Co., Ltd. (72) Inventor Osamu Aoyagi 3-18-1 Oka Shizuoka Mitsubishi Electric Corporation Shizuoka Factory (72) Inventor Yasuhiro Yoshino 3-18-1 Oga, Shizuoka City Mitsubishi Electric Corporation Shizuoka Factory

Claims (9)

[Claims] 1. A refrigerator with an automatic ice maker, comprising: a temperature sensor for detecting the temperature of an ice tray; and a control means for controlling an ice separating / water supplying device and the like according to the temperature detected by the temperature sensor, wherein the water supplying device is terminated. A refrigerator with an automatic ice maker, comprising a timer device for starting counting from a time, wherein the control means changes a temperature at which it is determined that the ice making is completed according to the time counted by the timer device. 2. A refrigerator with an automatic ice maker, comprising: a temperature sensor for detecting the temperature of an ice tray; and a control means for controlling an ice separator / water supply device or the like according to the temperature detected by the temperature sensor. Refrigerator with an automatic ice maker, which switches the temperature at which the ice-making is judged to be completed to a lower temperature when the temperature detected by the sensor drops at a certain speed or above a set value. 3. A first temperature sensor for detecting a temperature of an ice tray, a first control means for controlling an ice removing / water supplying device and the like by a temperature detected by the first temperature sensor, and a temperature of a freezing chamber. A second temperature sensor for detecting, a second control means for controlling a cooling device such as a compressor according to the temperature detected by the second temperature sensor, and an integrated operating time of the compressor reaches a predetermined time. With an automatic ice-making machine equipped with a defrosting device that sometimes defrosts a cooler and means for prohibiting the operation of the defrosting device during and after the operation of the deicing / water supply device for a certain period of time refrigerator. 4. A first temperature sensor for detecting a temperature of an ice tray, a first control means for controlling an ice removing / water supplying device and the like by a temperature detected by the first temperature sensor, and a temperature of a freezer compartment. A second temperature sensor for detecting, a second control means for controlling a cooling device such as a compressor according to the temperature detected by the second temperature sensor, and an operating rate calculating means for calculating an operating rate of the compressor. A refrigerator with an automatic ice maker, wherein the first control means changes the temperature at which the ice making is completed in accordance with the operating rate of the compressor calculated by the operating rate calculating means. 5. A compressor, a blower for supplying cold air, a damper for controlling the cold air supply amount according to a set temperature, an electric motor for controlling an ice tray of an automatic ice making device, and water stored in a water supply tank. In a refrigerator with an automatic ice maker, which comprises a water supply pump for supplying the ice tray to the ice tray, a drive element such as the compressor, and a drive circuit for controlling the drive element, the compressor is operated while the automatic ice making device is operating. Except for the means for stopping other driving elements, and when the operating condition of the automatic ice making device is reached during the operation of the compressor, the continuous operation time of the compressor is limited and the compression is performed when the time exceeds the time limit. Refrigerator with an automatic ice machine equipped with a means for stopping the machine. 6. A refrigerator with an automatic ice maker having a water storage tank and a water pan provided in the refrigerating compartment, and a water supply pump for supplying water from the water pan to the ice tray provided in the freezing compartment. Deicing operation counting means for counting deicing operation, a timer device for counting ice making time from the interval of deicing operation, installation detecting means for detecting installation of the water tray, and counting by the deicing operation counting means A refrigerator with an automatic ice maker, comprising: the number of times of ice removal performed, the ice making time counted by the timer device, and a control means for deciding to issue a warning from the water tray installation detection means. 7. A refrigerator with an automatic ice maker having a water storage tank and a water pan provided in the refrigerating compartment, and a water supply pump for supplying water from the water pan to the ice tray provided in the freezer compartment. Installation detecting means for detecting the installation, warning means for giving a warning, a reflection type photosensor provided on one of the water receiving trays and having a light emitting element and a light receiving element, and provided on the other side of the water receiving tray, from the light emitting element And a detection circuit for detecting that the incident amount of the reflected light on the light receiving element is less than or equal to a predetermined value, and a warning is issued from the determination result of this detection circuit. And a refrigerator with an automatic ice maker. 8. An electric pump and an ultraviolet lamp attached to a water receiving container connected to a water supply port of a water storage tank on the refrigerating compartment side of an automatic ice making device, and a constant time (T ₁ ) after a certain time (T ₁ ) after the operation of the electric pump. A refrigerator with an automatic ice-making machine, comprising: means for irradiating the ultraviolet lamp at regular time intervals (T ₃ ) at intervals of time (T ₂ ). 9. An electric pump and an ultraviolet lamp attached to a water receiving container connected to a water supply port of a water storage tank on a refrigerating compartment side of an automatic ice making device, a door switch attached to a refrigerator door, and an operation of the electric pump. After that, if the door is closed, a refrigerator with an automatic ice maker equipped with means for irradiating the ultraviolet lamp at a constant time interval (T ₃ ) for a fixed time period (T ₂ ) after a fixed time period (T ₁ ).