JP4492633B2 - Automatic ice making device and refrigerator equipped with this automatic ice making device - Google Patents

Description

  The present invention relates to an automatic ice making device and a refrigerator equipped with the automatic ice making device.

  An automatic ice making device mounted on a refrigerator has a structure in which water is supplied to two ice trays to make ice, and after ice making, each ice tray is inverted and deiced. No. 310946 (Patent Document 1).

  Hereinafter, a refrigerator equipped with a conventional automatic ice making device will be described with a focus on the automatic ice making device with reference to the drawings.

  FIG. 12 is a sectional view showing the periphery of a conventional automatic ice making device of a refrigerator, and FIG. 13 is a front view showing the conventional automatic ice making device.

  12 and 13, reference numeral 1 denotes a refrigerator, 2 denotes a refrigerator compartment, 3 denotes a freezer compartment for generating ice, 4 denotes a heat insulating wall separating the refrigerator compartment 2 and the freezer compartment 3, and a predetermined region forms a recess. is doing. Reference numeral 5 denotes a water supply tank disposed in the recess.

  A water supply pipe 6 guides the water discharged from the water supply tank 5 to the freezer compartment 3 through the heat insulating wall 4 and branches into two pipes in the heat insulating wall 4. 7 is a metal pipe disposed in each of the two branched pipes of the water supply pipe 6, and a heater wire 8 for melting ice and frost generated at the tip of the metal pipe 7 is wound around the metal pipe 7.

  Reference numeral 9 denotes two ice trays that temporarily store water flowing out from the two metal pipes 7 and freeze them to generate ice. Reference numeral 10 denotes a gear box located on the back side of the water supply tank for rotating the two ice trays 9 to release the ice.

  The operation of the conventional automatic ice making device configured as described above will be described below.

  The water discharged from the water supply tank 5 passes through the water supply pipe 6, passes through the heat insulating wall 4, is branched into two on the way, and is guided to the two metal pipes 7. The water branched into the two paths is supplied to two ice trays 9 disposed in the freezer compartment 3 through the metal pipe 7.

  The two ice trays 9 supplied with water are cooled in the atmosphere in the freezer compartment 3 to generate ice. When the ice making is completed, the gear box 10 rotates the two ice trays 9 to separate the ice, and a single operation can obtain twice the normal amount.

Moreover, since the water supply pipe 6 branched in the middle is used, water can be supplied to the ice tray 9 in two sheets without performing a complicated operation.
JP-A-9-310946

  However, since the conventional automatic ice making device has a structure in which the water supply pipe 6 is branched into two as a means for supplying water to the two ice trays, the water discharged from the water supply tank is divided into two The certainty of diverting the required amount of water to each ice tray in the ice tray 9 is low, and the amount of water varies with each water supply.

  In addition, the control for supplying water to each ice tray of the two ice trays, the control for deicing the ice from each ice tray, and the control for detecting the excess or deficiency of the ice that has been deiced and stored are still invented. Absent.

  The present invention solves the above-described conventional problems, and in an automatic ice making apparatus having two ice trays, appropriate water supply control and appropriate deicing control for each ice tray in the two ice trays, and The object is to provide a low-cost, space-saving automatic ice making device with appropriate ice detection control.

  According to the first aspect of the present invention, a temperature sensor for detecting completion of ice making is closely fixed to only the bottom surface of one ice making tray out of two ice making trays, and at the time of water supply to the ice making tray equipped with the temperature sensor. Even when water is supplied first, and the water level in the water supply tank is low and a halfway amount of water is supplied, the presence or absence of water supply can be determined.

  Next, in the invention according to claim 2, when a temperature sensor that detects completion of ice making is closely fixed to only the bottom surface of one ice making tray out of two ice making trays, and water is supplied to the two ice making trays, The amount of water supplied to an ice tray equipped with a temperature sensor is larger than the amount of water supplied to other ice trays, making it possible to slow down ice making on the side of the ice tray equipped with a temperature sensor. .

  Next, according to a third aspect of the invention, in the invention of the second aspect, the two ice trays have the same volume, and the pump is driven when water is supplied to the ice tray equipped with the temperature sensor. The time is longer than the drive time of the pump when supplying to other ice trays, and the amount of water supply on the ice tray side provided with the temperature sensor increases, making it possible to slow down ice making.

  Next, the invention according to claim 4 is the invention according to claim 2, wherein the two ice trays have the same volume, and the inner diameter of the discharge pipe leading to the ice tray equipped with the temperature sensor is different from the other. It is made larger than the inner diameter of the discharge pipe leading to the ice tray, and the amount of water supply on the ice tray side provided with the temperature sensor is increased, making it possible to slow the ice making.

  Next, the invention according to claim 5 is the invention according to claim 2, wherein the ice making tray provided with the temperature sensor out of the two ice making trays has a larger volume than the other ice making trays, and the ice making tray provided with the temperature sensor. The pump drive time when supplying water to the tray is longer than the pump drive time when supplying water to other ice trays. It becomes possible to do.

  Next, the invention according to claim 6 is the invention according to claim 2, wherein the ice making tray provided with the temperature sensor out of the two ice making trays has a larger volume than the other ice making trays, and the ice making tray provided with the temperature sensor. The inside diameter of the discharge pipe leading to the tray is made larger than the inside diameter of the discharge pipe leading to another ice tray, and the amount of water supply on the side of the ice tray equipped with the temperature sensor is increased, making it possible to slow ice making.

  Next, the invention according to claim 7 is configured such that a temperature sensor for detecting the completion of ice making is tightly fixed only to the bottom surface of one ice making tray of the two ice making trays, and the temperature sensor of the two ice making trays. The amount of cold air blown to the ice tray provided with is smaller than the amount of cold air blown to other ice trays, and the ice making on the side of the ice tray equipped with the temperature sensor can be delayed.

  Next, the invention according to claim 8 is the invention according to claim 7, wherein the ice making tray provided with the temperature sensor is moved away from the cold air outlet than the other ice making trays. Thus, it is possible to slow down ice making on the ice tray side provided with the temperature sensor.

  Next, the invention according to claim 9 is configured such that a temperature sensor that detects completion of ice making is closely fixed to only the bottom surface of one ice making tray out of the two ice making trays. The two water trays are twisted and separated after a predetermined time from the time when the temperature sensor detects the completion of ice making, and the ice making tray side that does not have a temperature sensor is used. Ice making time is longer.

  Next, the invention according to claim 10 is configured such that a temperature sensor that detects the completion of ice making is closely fixed to only the bottom surface of one ice making tray out of the two ice making trays. The ice making trays that have the same amount of water and the ice tray equipped with the temperature sensor completes the de-icing operation and performs the de-icing operation of the other ice trays after a predetermined period of time. Long ice making time can be secured.

  Next, the invention according to claim 11 is configured such that a temperature sensor for detecting completion of ice making is closely fixed to only the bottom surface of one ice making tray out of two ice making trays. An ice detecting lever that descends into the ice storage box at a predetermined time and detects excess or deficiency of ice is provided only on the ice making tray side with the temperature sensor of the two ice making trays. The total amount of ice is determined by detecting the amount of ice stored below.

  Next, the invention according to claim 12 is the invention according to claim 11, wherein the inner bottom surface of the ice storage box is continuously inclined and becomes deeper toward the ice detecting lever, It becomes easy for ice to gather to the ice detection lever side.

  Next, in the invention described in claim 13, in the invention described in claim 11, the ice detection operation for detecting the excess or deficiency of ice in the ice storage box by lowering the ice detection lever into the ice storage box is performed in two ways. Prior to water supply to the ice tray, when it is determined that the ice is sufficient, water is not supplied to the ice tray, and the ice tray is made to stand by from the sky.

  Next, in the invention described in claim 14, when the two ice trays are twisted and deiced in the invention described in claim 11, the tip of the ice tray on the side where the ice detecting lever is not provided is provided. This makes it possible to de-icing the ice and delay the judgment of sufficient ice.

  Next, in the invention described in claim 15, in the invention described in claim 11, the ice detection operation for detecting the excess or deficiency of ice in the ice storage box by lowering the ice detection lever into the ice storage box is performed in two ways. This is performed every time the ice making operation of each ice tray is completed, and ice detection becomes accurate.

  Next, the invention according to claim 16 is the invention according to claim 11, wherein the ice in the ice storage box is sufficient due to the deicing of one of the two ice trays. Does not deicing the other ice tray, and can maintain an appropriate amount of ice.

Next, the invention according to claim 17 is a refrigerator including the automatic ice making device according to any one of claims 1 to 16 , and performs ice making twice as much as the conventional one. In addition, the ice amount is detected by one ice detecting lever while two ice trays are provided.

  According to the first aspect of the present invention, a temperature sensor for detecting completion of ice making is closely fixed only to the bottom surface of one ice making tray out of two ice making trays, and when water is supplied, water is supplied first to the ice making tray provided with the temperature sensor. It is.

  As a result, even in the worst case where the water level in the water supply tank is low and half-way water is supplied, it is possible to keep the amount of water supplied to the ice tray equipped with the temperature sensor constantly increasing, and the ice making by the temperature sensor is completed. It is possible to recognize the completion of ice making in the other ice tray only by detecting this.

  Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, which simplifies the configuration and is advantageous in terms of cost.

  According to the second aspect of the present invention, when the temperature sensor for detecting the completion of ice making is closely fixed to only the bottom surface of one of the two ice trays, water is supplied to the two ice trays. The amount of water supplied to the ice tray provided with is larger than the amount of water supplied to the other ice trays, and the ice making on the side of the ice tray provided with the temperature sensor can be delayed.

  Thus, it is possible to recognize the completion of ice making in the other ice tray only by detecting the completion of ice making by the temperature sensor. Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, so the configuration is simplified and the cost is low.

  According to a third aspect of the invention, in the invention of the second aspect, the two ice trays have the same volume, and the pump is driven when water is supplied to the ice tray equipped with a temperature sensor. The time is set longer than the driving time of the pump when supplying to another ice tray, and the amount of water supply on the ice tray side provided with the temperature sensor increases, making it possible to slow down ice making.

  Thus, it is possible to recognize the completion of ice making in the other ice tray only by detecting the completion of ice making by the temperature sensor. Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, so the configuration is simplified and the cost is low.

  According to a fourth aspect of the present invention, in the second aspect of the invention, the two ice trays have the same volume, and the inside diameter of the discharge pipe leading to the ice tray having the temperature sensor is set to be different from that of the other ice trays. It is made larger than the inner diameter of the discharge pipe leading to, and the amount of water supply on the ice tray side provided with the temperature sensor is increased so that ice making can be delayed.

  Thus, it is possible to recognize the completion of ice making in the other ice tray only by detecting the completion of ice making by the temperature sensor. Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, so the configuration is simplified and the cost is low.

  The invention according to claim 5 is the invention according to claim 2, wherein the ice making tray provided with the temperature sensor is larger in volume than the other ice making trays, and the ice making tray provided with the temperature sensor. The drive time of the pump when supplying water to the ice tray is longer than the drive time of the pump when supplying water to other ice trays, and the amount of water supplied on the ice tray side with the temperature sensor is increased. It becomes possible to slow down.

  Thus, it is possible to recognize the completion of ice making in the other ice tray only by detecting the completion of ice making by the temperature sensor. Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, so the configuration is simplified and the cost is low.

  The invention according to claim 6 is the ice making tray according to claim 2, wherein the ice making tray provided with the temperature sensor is larger in volume than the other ice making trays, and the ice making tray provided with the temperature sensor. The inside diameter of the discharge pipe leading to the inside is made larger than the inside diameter of the discharge pipe leading to other ice trays, so that the amount of water supply on the ice tray side provided with the temperature sensor is increased and ice making can be slowed.

  Thus, it is possible to recognize the completion of ice making in the other ice tray only by detecting the completion of ice making by the temperature sensor. Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, so the configuration is simplified and the cost is low.

  Further, the invention according to claim 7 is configured such that a temperature sensor for detecting completion of ice making is closely fixed to only a bottom surface of one ice making tray out of two ice making trays, and the temperature sensor is provided in two ice making trays. The amount of cold air blown to the ice tray is smaller than the amount of cold air blown to the other ice trays, and the ice making on the side of the ice tray equipped with the temperature sensor can be slowed.

  Thus, it is possible to recognize the completion of ice making in the other ice tray only by detecting the completion of ice making by the temperature sensor. Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, so the configuration is simplified and the cost is low.

  The invention according to claim 8 is the invention according to claim 7, in which an ice making tray provided with a temperature sensor out of the two ice trays is further away from the cold air outlet than the other ice making trays. The ice making on the ice tray side provided with the temperature sensor can be slowed down.

  Thus, it is possible to recognize the completion of ice making in the other ice tray only by detecting the completion of ice making by the temperature sensor. Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, so the configuration is simplified and the cost is low.

  Further, the invention according to claim 9 is configured such that a temperature sensor for detecting completion of ice making is tightly fixed only to the bottom surface of one of the two ice trays, and is supplied to each ice tray of the two ice trays. The ice making side of the ice-making tray that does not have a temperature sensor is designed to twist the two ice-making trays and release them after a predetermined time from the time when the temperature sensor detects the completion of ice-making. The time will be longer.

  Thus, it is possible to recognize the completion of ice making in the other ice tray only by detecting the completion of ice making by the temperature sensor. Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, so the configuration is simplified and the cost is low.

  Further, the invention according to claim 10 is configured such that a temperature sensor for detecting completion of ice making is tightly fixed only to the bottom surface of one of the two ice trays, and is supplied to each ice tray of the two ice trays. The ice making trays with the temperature sensors having the same amount of water are subjected to the ice removing operation of the other ice trays after a predetermined time elapses after the ice removing operation is completed.

  Thus, it is possible to recognize the completion of ice making in the other ice tray only by detecting the completion of ice making by the temperature sensor. Therefore, although only two ice trays are provided, it is only necessary to manage one ice tray, so the configuration is simplified and the cost is low.

  The invention according to claim 11 is configured such that a temperature sensor for detecting completion of ice making is closely fixed to only the bottom surface of one of the two ice making dishes, and when ice making, the apparatus waits above the ice storage box and is predetermined. The ice detecting lever that descends into the ice storage box at the time of the detection to detect the excess or deficiency of ice is provided only on the ice making tray side with the temperature sensor of the two ice making trays. The total amount of ice is judged from the amount of ice stored below, and the ice can be detected with one ice detecting lever even though two ice trays are provided.

  The invention according to claim 12 is the invention according to claim 11, wherein the inner bottom surface of the ice storage box is continuously inclined and becomes deeper toward the ice detecting lever. Since it is easy to gather to the ice detecting lever side, more accurate ice detection can be performed with one ice detecting lever.

  The invention described in claim 13 is the invention described in claim 11, wherein the ice detecting operation for detecting the excess or shortage of ice in the ice storage box by lowering the ice detecting lever into the ice storage box Prior to water supply to the tray, when it is determined that the ice is sufficient, water is not supplied to the ice tray, and the ice tray is made to wait in the sky.

  As a result, since the ice tray does not stand by while holding the ice, beautiful ice can be provided without the ice sublimating and fading.

  Further, in the invention described in claim 14, in the invention described in claim 11, when the two ice trays are twisted to release the ice, the ice tray on the side where the ice detecting lever is not provided is arranged first. The ice making tray on the side that does not have the ice detection lever is not allowed to be left after it has become ice, so it is easy to thin by sublimation. And can provide beautiful ice without thinning.

  Further, in the invention described in claim 15, in the invention described in claim 11, the ice detection operation for detecting the excess or deficiency of ice in the ice storage box by lowering the ice detection lever into the ice storage box is performed. This is performed every time the ice removing operation of each ice tray is completed, and ice detection becomes more accurate.

  Further, the invention according to claim 16 is the invention according to claim 11, wherein when the ice in the ice storage box becomes sufficient due to the ice removal from one ice making tray out of the two ice making trays. The other ice tray is not deiced, can maintain an appropriate amount of ice, and can prevent ice overflow from the ice storage box.

The invention described in claim 17 is a refrigerator provided with the automatic ice making device according to any one of claims 1 to 16 , and can perform ice making twice as much as that of a conventional family. A refrigerator suitable for ice consumption can be provided.

  In addition, since the ice amount can be detected by one ice detecting lever while having two ice trays, the dimension in the width direction can be shortened and space saving can be realized.

  Hereinafter, an automatic ice making device according to the present invention will be described with reference to the drawings. In addition, the same code | symbol is used for the place of the same structure as the past, and detailed description is abbreviate | omitted.

(Embodiment 1)
1 is a front view of an automatic ice making device according to Embodiment 1 of the present invention, FIG. 2 is a partial side view of the same embodiment, and FIG. 3 is a sectional view showing water supply means of the same embodiment.

  In FIG. 3, reference numeral 11 denotes a water supply tank for storing water, and a part of the recess 11a is provided at the bottom. Reference numeral 12 denotes a pump chamber disposed in the recess 1a in the water supply tank 1, with the first pump chamber 12a on the right and the second pump chamber 12b on the left. Reference numeral 13 denotes a pump case that is an outer shell of the pump chamber 12, and the right side is a first pump case 13a and the left side is a second pump case 13b.

  Reference numeral 14 denotes an impeller rotatably supported inside the pump case 13, and the right is a first impeller 14a and the left is a second impeller 14b. The first impeller 14a and the second impeller 14b are wheel-shaped first magnet 15a and second magnet 15b, and first and second blades 16a and 16b that protrude perpendicularly to the first and second magnets 15a and 15b. A vehicle 16b is integrally formed.

  Reference numeral 17 denotes a water inlet provided in the pump case 13, with the first water inlet 17a on the right and the second water inlet 17b on the left. Reference numeral 18 denotes a discharge port provided on the side surface of the pump case 13. The right side is a first discharge port 18 a and the left side is a second discharge port 18 b. Reference numeral 19 denotes a discharge pipe connected to the discharge port 18. The right side is a first discharge pipe 19 a and the left side is a second discharge pipe 19 b, which extend to the outside of the water supply tank 11.

  Reference numeral 20 denotes an outer side of the water supply tank 11, which is a pump drive unit disposed close to the pump chamber 12. The right side is a first pump drive unit 20 a and the left side is a second pump drive unit 20 b. Reference numeral 21 denotes an outer magnet disposed at a position facing the magnet 15 of the pump chamber 12, and the right is a first outer magnet 21a and the left is a second outer magnet 21b. Reference numeral 22 denotes a motor that holds and rotates the outer magnet 21, and the right is the first motor 22a and the left is the second motor 22b. The outer magnets 21 are press-fitted into the rotation shafts 23 (23a, 23b) of the motor 22, respectively.

  As described above, in the present embodiment, two pump chambers 12 are arranged inside the water supply tank 11, and two pump drive units 20 are arranged outside the water supply tank 11 so as to correspond to each of the pump chambers 12. The pump 24 is comprised by these. Hereinafter, in FIG. 3, the right pump is referred to as the first pump 24a, and the left pump is referred to as the second pump 24b.

  In FIG. 1, reference numeral 25 denotes a water supply pipe for receiving water discharged from the first discharge pipe 19 to a predetermined position. The right is a first water supply pipe 25a and the left is a second water supply pipe 25b. The water supply pipe 25 is formed in a wide-mouth shape so that water discharged from the discharge pipe 19 is not scattered.

  Reference numeral 26 denotes an ice tray that continuously stores and waits for water supplied from the water supply pipe 25. In FIG. 1, the right ice tray is the first ice tray 26a, and the left ice tray is the second ice tray. 26b.

  Reference numeral 27 denotes a gear motor unit that can individually rotate the first ice tray 26a and the second ice tray 26b. Two output shafts 27a and 27b protrude from the gear motor unit 27, and each of the first ice tray 26a. The second ice tray 26b is connected.

  At least one set of a motor (not shown) and a reduction gear (not shown) is provided inside the gear motor unit 27, and the output shafts 27a and 27b can be rotated independently. The ice tray 26 is rotated 160 ° by the gear motor unit 27. However, when the ice tray 26 is 130 ° halfway, the corner of the ice tray 26 hits a convex portion (not shown) provided in the freezer compartment and tries to stop the rotation of the ice tray 26. As a result, the ice tray 26 is twisted, and if there is ice in the ice tray 26, the ice is twisted off.

  An ice storage box 28 is disposed below the ice tray 26 and receives and stores the ice twisted from the ice tray 26. The inner bottom surface of the ice storage box 28 is continuously inclined so as to become deeper from the lower side of the second ice tray 26b toward the lower side of the first ice tray 26a, and the ice removed from the second ice tray 26b is One ice tray 26a is gathered below.

  An ice detecting lever 29 is connected to the gear motor unit 27 at one end and extends in parallel with the longitudinal direction of the ice tray 26. The ice detecting lever 29 is rotated by the gear motor unit 27 and descends into the ice storage box 28 to become ice. When entering a predetermined position without being blocked, it is determined that the ice is insufficient, and when the ice is blocked and does not enter the predetermined position, it is determined that the ice is sufficient.

  In the present embodiment, the ice detecting lever 29 is provided on the first ice tray 26 a side so that the ice below the first ice tray 26 a provided with the temperature sensor 30 can be detected.

  A temperature sensor 30 is closely fixed to the bottom surface of the ice tray 26 and detects the temperature of the bottom wall of the ice tray 26 to estimate the temperature of the water supplied to the ice tray 26. For example, immediately after the water is supplied to the ice tray 26, the bottom temperature of the ice tray 26 rises due to the water temperature, so that it can be recognized that water has been supplied, and then the temperature of the bottom wall falls to below the freezing point. , It can be recognized that the water has cooled and started to freeze, and further cooling can recognize that ice has been generated.

  In the present embodiment, the temperature sensor 30 is provided only on the first ice tray 26a side. When the temperature of the temperature sensor 30 becomes 0 ° C. or higher, it is recognized that the ice tray 26 has been supplied with water, and the temperature sensor 30 When -12 ° C or lower, it is recognized that ice has been generated.

  A control unit 31 controls the drive of the pump 14 and the gear motor unit 27, determines whether the ice in the ice storage box 28 is excessive or insufficient, and determines whether ice making is completed.

  Reference numeral 32 denotes a cold air outlet provided in the freezer compartment 3, and since the cold air flows from the second ice tray 26 b toward the first ice tray 26 a, the second ice tray 26 b is cooled better.

  The operation of the automatic ice making device configured as described above will be described with reference to a flowchart. FIG. 4 is a flowchart showing the basic operation of the present embodiment, and FIG. 5 is a flowchart showing the water supply operation in FIG.

  In FIG. 4, when the power is turned on, the process proceeds to step 1 to perform an initial operation. This is an operation for returning the ice tray 26 to a horizontal state when the ice tray 26 is stopped due to a power failure or the like during operation and power is supplied again. Since the initial operation is performed independently for each of the first ice tray 26a and the second ice tray 26b, when either one of the ice trays cannot return to the horizontal position, this is the first ice tray. 26a or the second ice tray 26b can be easily identified, and if the abnormal side is specified and displayed, there is an advantage that serviceability is improved.

  When the initial operation is completed in step 1, the process proceeds to step 2 to perform the ice detection operation. In the ice detection operation, the gear motor unit 27 is driven to lower the ice detection lever 29 into the ice storage box 28. When the ice detection lever 29 is lowered to a predetermined position in the ice storage box 28 without being obstructed by the ice, the gear motor unit 27 is operated. When no signal is input from the switch (not shown) provided in the control unit 31 to the control unit 31 and the ice detecting lever 29 is disturbed by ice and does not descend to a predetermined position in the ice storage box 28, the gear motor unit 27 A signal is input to the control unit 31 from a switch provided in the control unit 31.

  When the ice detection operation is completed in step 2, the process proceeds to step 3 to determine whether the ice is excessive or insufficient. Here, it is determined whether or not a signal is input from a switch provided in the gear motor unit 27 during the ice detecting operation in step 2, and if a signal is input, the process proceeds to step 7 and waits for a predetermined time. Proceed to step 2 again to perform ice detection. On the other hand, if no signal is input, the process proceeds to step 4 and a water supply operation is performed.

  If it is determined in step 3 that the ice is insufficient, the process proceeds to step 4 to perform a water supply operation. The water supply operation is an operation of driving the pump 14 to supply water from the water supply tank 11 to the ice tray 26, which will be described in detail later.

  When the water supply operation is finished in step 4, the process proceeds to step 5 where the ice making standby is performed. The ice making standby is an operation of maintaining the ice making tray 26 supplied with water in a horizontal state and waiting until the water freezes to generate ice, and the temperature sensor 30 closely fixed to the bottom surface of the first ice making tray 26a is provided. Detect -12 ° C and wait for 15 minutes.

  When the ice making standby is completed in step 5, the process proceeds to step 6 to perform the ice removing operation. The deicing operation is an operation of driving the gear motor unit 27 to rotate the ice tray 26 to twist it to twist out ice, and dropping the ice into the ice storage box 28. The ice making operation of the second ice tray 26b and the first ice tray 26a is performed. Operate deicing in order. When the ice removal operation is completed, the process proceeds to step 2 again.

  The above is a series of operation | movement of the automatic ice making apparatus of this Embodiment, Next, the water supply operation | movement of step 4 is demonstrated, referring FIG.

  First, after the ice detection operation is completed, when it is determined that the ice is insufficient, the water supply operation mode is started in step 400 and the process proceeds to step 401. In step 401, in order to confirm that the door of the refrigerator compartment 2 where the water supply tank 11 is disposed or the door of the freezer compartment 3 is closed, it is confirmed whether or not the door switch is off. In this embodiment, if the door switch is off, it is determined that the door is closed.

  If the door switch is turned on in step 401, the confirmation is continued until the door switch is turned off. In step 402, the first pump 24a is driven, and the process proceeds to step 403.

  In step 403, the measurement of the driving time T1 of the first pump 24a is started, and the process proceeds to step 404. In step 404, it is confirmed whether or not the driving time T1 has passed 5 seconds. In the present embodiment, when the first pump is driven for 5 seconds, an appropriate amount of water is supplied to the first ice tray 26a. Therefore, the confirmation is continued until 5 seconds elapse, and when 5 seconds elapse, the process proceeds to step 405. The drive of the pump 24a is stopped.

  Note that the first pump 24a continues to be driven until 5 seconds have elapsed even if the door of the refrigerator compartment or the freezer compartment is opened while the first pump 14a is being driven and an ON signal is input from the door switch to the control unit 31.

  When the first pump 24a is stopped in step 405, the process proceeds to step 406 to confirm again that the door switch is off. This is because when the door switch is turned on immediately after the water supply to the first ice tray 26a is completed by the first pump 24a, that is, when the door is opened, the driving of the second pump 24b is delayed.

  If it is confirmed in step 406 that the door switch is off, the process proceeds to step 407, the second pump 24b is driven, and the process proceeds to step 408.

  In step 408, the measurement of the driving time T2 of the second pump 24b is started, and the process proceeds to step 409. In step 409, it is confirmed whether or not the driving time T2 has passed 5 seconds. In the present embodiment, when the second pump is driven for 5 seconds, an appropriate amount of water is supplied to the second ice tray 26b. Therefore, the confirmation is continued until 5 seconds have elapsed, and when 5 seconds have elapsed, the process proceeds to step 410 and second. The drive of the pump 24b is stopped, and it progresses to step 411 and complete | finishes a water supply operation mode.

  Next, the ice making standby will be described with reference to the drawings.

  FIG. 6 is a flowchart showing the ice making standby of the present embodiment. When the ice making standby mode is entered in step 500, the process proceeds to step 501, via the temperature sensor 30 closely fixed to the bottom surface of the first ice tray 26a. It is confirmed whether the bottom surface temperature Q is −12 ° C. or lower.

  When Q ≦ −12 ° C. is confirmed in step 501, the process proceeds to step 502, the time S 1 is started by a timer, and the process proceeds to step 503.

  In step 503, it is confirmed whether or not the time S1 has passed 15 minutes. And if S1> = 15 minutes can be confirmed, it will progress to step 504 and will complete ice-making standby mode.

  In the ice making standby mode, by setting a waiting time of 15 minutes after the temperature sensor 30 detects −12 ° C. or less, the second ice tray 26b is also reliably completed, so that the second ice tray 26b It is not necessary to provide the ice making sensor 30.

  Next, the ice removing operation will be described with reference to the drawings.

  FIG. 7 is a flowchart showing the deicing operation of the present embodiment. When the deicing operation mode is entered in step 600, the process proceeds to step 601, where the second ice tray 26b is rotated forward.

  In step 602, it is confirmed whether or not the second ice tray 26b has reached the deicing position. In the present embodiment, the position where the second ice tray 26b is rotated by 160 ° is set as the deicing position, and when the deicing position is reached, a signal is sent from the position detection switch (not shown) built in the gear motor unit 27 to the control unit 31. Is entered.

  If the deicing position is confirmed in step 602, the process proceeds to step 603, the forward rotation of the second ice tray 26b is stopped, and the process proceeds to step 604.

  In step 604, in order to return the second ice tray 26b to the horizontal position, the second ice tray 26b is reversed.

  In step 605, it is confirmed whether or not the second ice tray 26b has returned to the horizontal position. In the present embodiment, when the second ice tray 26 b reaches the horizontal position, a signal is input to the control unit 31 from a position detection switch (not shown) built in the gear motor unit 27.

  If the horizontal position is confirmed in step 605, the process proceeds to step 606, the reverse rotation of the second ice tray 26b is stopped, and the ice removal of the second ice tray 26b is completed.

  Next, it progresses to step 607 and the 1st ice tray 26a is rotated forward.

  In step 608, it is confirmed whether or not the first ice tray 26a has reached the deicing position. In the present embodiment, the position where the first ice tray 26a is rotated by 160 ° is set as the deicing position, and when the deicing position is reached, a signal is sent from the position detection switch (not shown) built in the gear motor unit 27 to the control unit 31. Is entered.

  If the deicing position is confirmed in step 608, the process proceeds to step 609, the normal rotation of the first ice tray 26a is stopped, and the process proceeds to step 610.

  In step 610, in order to return the first ice tray 26a to the horizontal position, the first ice tray 26a is reversed.

  In step 611, it is confirmed whether or not the first ice tray 26a has returned to the horizontal position. In the present embodiment, when the first ice tray 26 a reaches the horizontal position, a signal is input to the control unit 31 from a position detection switch (not shown) built in the gear motor unit 27.

  If the horizontal position is confirmed in step 611, the process proceeds to step 612, the reverse rotation of the first ice tray 26a is stopped, and the ice removal operation mode is ended in step 613.

  The series of operations according to the first embodiment has been described above with reference to the flowcharts. In this embodiment, since the ice detection operation is performed after the initial operation, the ice tray 26 is returned to the horizontal position even when the power is turned on again after a power interruption due to a power failure or the like. Since the lack is judged, it is possible to provide a lean operation.

  Further, since the ice detection operation is performed prior to the water supply operation, it is not necessary to supply water when there is sufficient ice, and there is no need to wait while holding ice in the ice tray. As a result, ice in the ice tray does not become thin due to sublimation and does not become small, so that it is possible to provide visually beautiful ice.

  In the water supply operation, if the remaining water in the water supply tank 11 is low, water is supplied to only one ice tray. Therefore, if the ice tray to be supplied first is specified and the ice making state of the ice tray is managed, it is not necessary. It is possible to estimate and control the ice making state of the ice tray.

  In the present embodiment, the first pump 24a and the first ice tray 26a and the second pump 24b and the second ice tray 26b are in a one-to-one correspondence so that the first time is always the first in the water supply operation. The pump 24a is driven to supply water to the first ice tray 26a. Since the temperature sensor 30 is closely fixed to the bottom surface of the first ice tray 26a to control the temperature, if the temperature sensor 30 detects that the ice making is completed in the first ice tray 26a, the temperature sensor 30 is surely used. In addition, it can be determined that the ice making is completed in the second ice tray 26b.

  In the flow chart of the water supply operation, “T1 ≧ 5” is set in step 404 and “T2 ≧ 5” is set in step 409, so that the amount of water supplied to the first ice tray 26a and the second ice tray 26b is the same. However, the amount of water supplied to the first ice tray 26a may be made larger than the amount of water supplied to the ice tray 26b as “T1 ≧ 6”. As a result, the time required for ice making in the first ice tray 26a is longer than that in the second ice tray 26b. Therefore, if the temperature sensor 30 detects that the ice making is completed in the first ice tray 26a, it is surely possible. It can be determined that the second ice tray 26b has completed ice making.

  Further, without changing the driving time of the pump 24, the inner diameter of the first discharge port 18a is made larger than the inner diameter of the second discharge port 18b, so that “the first discharge port 18a and the first ice tray 26a”, “the second discharge port”. The same effect can be obtained if there is a one-to-one correspondence like the outlet 18b and the second ice tray 26b. Further, the inner diameter of the first discharge pipe 19a is made larger than the inner diameter of the second discharge pipe 19b, and the "first discharge pipe 19a and the first ice tray 26a" and "second discharge pipe 19b and the second ice tray 26b" Thus, the same effect can be obtained even if it is made to correspond one-to-one.

  In the present embodiment, the first ice tray 26a and the second ice tray 26b have the same volume, but the same is true even if the volume of the first ice tray 26a is increased and the driving time of the first pump 24a is increased. An effect is obtained. Furthermore, even if the inner diameter of the first discharge port 18a is made larger than the inner diameter of the second discharge port 18b without changing the driving time of the pump 24, the inner diameter of the first discharge tube 19a is made larger than the inner diameter of the second discharge tube 18b. Even if it is enlarged, the same effect can be obtained if the side with the larger inner diameter corresponds to the first ice tray 26a.

  Further, since the cold air outlet 32 is provided on the second ice tray 26b side and the first ice tray 26a is moved away from the outlet, the second ice tray 26b can make ice faster, and the first ice tray 26a can make ice. If it is detected by the temperature sensor 30 that it has been completed, it can be reliably determined that ice making has been completed in the second ice tray 26b. The same effect can be obtained by reducing the amount of cold air on the second ice tray 26a side so that both ice trays are exposed to cold air.

  Further, in the ice making standby mode, since a waiting time of 15 minutes is further set from the time when the temperature sensor 30 detects −12 ° C. or lower, the second ice tray 26b reliably completes the ice making operation. The mode is entered, and it is not necessary to provide the ice making sensor 30 in the second ice tray 26b.

  Further, in the ice detecting operation, the ice detecting lever 29 is provided on the first ice tray 26a side so that the ice below the first ice tray 26a provided with the temperature sensor 30 can be detected, so that the ice is easily collected. Since the bottom of the first ice tray 26a can be detected, even if there are two ice trays, one ice detection lever can be used.

  In addition, since the ice tends to collect below the first ice tray 26a, and the ice tends to be in a sufficient state immediately, the ice detection operation is performed on the journey where the ice removal operation of one ice tray is finished, and the ice is in a sufficient state. If there is, the next ice tray may be de-iced without being deiced.

  Then, as the deicing order, if the deicing operation is performed first from the side where the ice detecting lever 29 is not provided, that is, from the second ice tray 26b where the ice making is completed faster than the first ice tray 26a, It is possible to prevent ice from dripping in the first ice tray 26b and to provide beautifully visible ice.

(Embodiment 2)
FIG. 8 is a sectional view showing the water supply means of the embodiment. In addition, the thing of the same structure as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits detailed description.

  In FIG. 8, 11 is a water supply tank for storing water, and a part of the recess 11a is provided at the bottom. Reference numeral 102 denotes a pump chamber disposed in the recess 1 a in the water supply tank 1, and reference numeral 103 denotes a pump case serving as an outline of the pump chamber 102.

  A spiral wheel 104 is rotatably supported inside the pump case 103. The spiral wheel 104 is integrally formed with a wheel-shaped magnet 105 and a spiral 106 that protrudes adjacent to the magnet 105.

  The spiral 106 has a three-strand structure with a lead of 20 mm, and can rotate to move water along the spiral. In the present embodiment, the spiral wheel 104 is placed on the bottom surface of the tank 101. Accordingly, the height dimension of the water supply tank 101 can be shortened.

  Reference numeral 107 denotes a water suction port provided in the pump case 103, and 108 denotes a discharge port provided on the side surface of the pump case 103. In FIG. 8, the right side is the discharge port 108a and the left side is the discharge port 108b.

  A discharge pipe 19 is connected to the discharge port 108 and extends to the outside of the water supply tank 101. In FIG. 8, the right side is the discharge pipe 19a and the left side is the discharge pipe 19b.

  110 is an outer side of the water supply tank 101, and is a pump drive unit disposed in the vicinity of the pump chamber 102, 111 is an outer magnet disposed at a position facing the magnet 105 of the pump chamber 102, and 22 is an outer magnet. It is a motor that holds and rotates 111. The outer magnet 111 is press-fitted into the rotating shaft 23 of the motor 22.

  In the present embodiment, the pump 114 is configured by disposing the pump chamber 102 inside the water supply tank 11 and disposing the pump drive unit 110 so as to correspond to the pump chamber 102 outside the water supply tank 101.

  When the pump 114 rotates the motor 22 in the reverse direction (counterclockwise rotation as viewed from the rotation shaft 23), the water moves from the left to the right of the spiral 106 and the water is discharged from the discharge port 108a. When rotating clockwise as viewed from the shaft 23), the water moves from the right to the left of the spiral 106, and water is discharged from the discharge port 108b.

  The automatic ice making device configured as described above will be described. Since the basic operation is the same as the flowchart of the first embodiment shown in FIG. 4, the description thereof will be omitted, and the water supply operation will be described using the flowchart of FIG.

  First, after the ice detection operation is completed, when it is determined that the ice is insufficient, the water supply operation mode is started in step 450 and the process proceeds to step 451. In step 451, in order to confirm that the door of the refrigerator compartment 2 where the water supply tank 11 is arranged or the door of the freezer compartment 3 is closed, it is confirmed whether or not the door switch is off. In this embodiment, if the door switch is off, it is determined that the door is closed.

  If the door switch is turned on in step 451, the confirmation is continued until the door switch is turned off, and if it is off, the process proceeds to step 452. In step 452, the motor 22 is reversed and the process proceeds to step 453.

  In step 453, the counting of the reverse rotation time T3 of the motor 22 is started, and the process proceeds to step 454. In step 454, it is confirmed whether or not the reverse rotation time T3 has passed 5 seconds. In this embodiment, when the motor 22 is reversed for 5 seconds, an appropriate amount of water is supplied to the first ice tray 26a. Therefore, the confirmation is continued until 5 seconds elapse, and when 5 seconds elapse, the process proceeds to step 455. Stop rotation.

  In addition, even if the door of a refrigerator compartment opens and the ON signal is input into the control part 30 from a door switch during reverse rotation of the motor 22, the motor 22 continues reverse rotation until 5 seconds pass.

  When the motor 22 is stopped in step 455, the process proceeds to step 456 to confirm again that the door switch is off. This is because the start of the motor 22 is delayed when the door switch is turned on immediately after the water supply to the first ice tray 26a is completed by the motor 22, that is, when the door is opened.

  If it is confirmed in step 456 that the door switch is off, the process proceeds to step 457, the motor 22 is rotated forward, and the process proceeds to step 458.

  In step 458, the counting of the forward rotation time T 4 of the motor 22 is started, and the process proceeds to step 459. In step 459, it is confirmed whether or not the forward rotation time T4 has passed 5 seconds. In this embodiment, when the motor 22 is rotated forward for 5 seconds, an appropriate amount of water is supplied to the second ice tray 26b. Therefore, the confirmation is continued until 5 seconds elapse, and when 5 seconds elapse, the process proceeds to step 460 and the motor 22 Is stopped, and the process proceeds to step 461 to end the water supply operation mode.

  Next, the ice making standby will be described with reference to the drawings.

  FIG. 10 is a flowchart showing the ice making standby according to the present embodiment. When the ice making standby mode is entered in step 550, the process proceeds to step 551, via the temperature sensor 30 closely fixed to the bottom surface of the first ice tray 26a. It is confirmed whether the bottom surface temperature R is −12 ° C. or lower.

  When R ≦ −12 ° C. is confirmed in step 551, the process proceeds to step 552, and the ice making standby mode is terminated.

  Next, the ice removing operation will be described with reference to the drawings.

  FIG. 11 is a flowchart showing the deicing operation of the present embodiment. When the deicing operation mode is entered in step 650, the process proceeds to step 651, where the first ice tray 26a is rotated forward.

  In step 652, it is confirmed whether or not the first ice tray 26a has reached the deicing position. In the present embodiment, the position where the first ice tray 26a is rotated by 160 ° is set as the deicing position, and when the deicing position is reached, a signal is sent from the position detection switch (not shown) built in the gear motor unit 27 to the control unit 31. Is entered.

  If the deicing position is confirmed in step 652, the process proceeds to step 653, the forward rotation of the second ice tray 26b is stopped, and the process proceeds to step 654.

  In step 654, in order to return the first ice tray 26a to the horizontal position, the first ice tray 26a is reversed.

  In step 655, it is confirmed whether or not the first ice tray 26a has returned to the horizontal position. In the present embodiment, when the first ice tray 26 a reaches the horizontal position, a signal is input to the control unit 31 from a position detection switch (not shown) built in the gear motor unit 27.

  If the horizontal position is confirmed in step 655, the process proceeds to step 656, the reverse rotation of the first ice tray 26a is stopped, and the ice removal of the first ice tray 26a is completed.

  After step 656 is processed, the process proceeds to step 657, the time S2 is started by the timer, and the process proceeds to step 658.

  In step 658, it is confirmed whether or not the time S2 has passed 15 minutes. If S1> 15 minutes can be confirmed, the process proceeds to step 659. In the deicing operation mode, since the standby time of 15 minutes is set from the time when the deicing of the first ice tray 26a is completed, the second ice tray 26b reliably completes the ice making. It is not necessary to provide the ice making sensor 30 on the plate 26b.

  In Step 659, the second ice tray 26b is rotated forward and the process proceeds to Step 660.

  In step 660, it is confirmed whether or not the second ice tray 26b has reached the deicing position. In the present embodiment, the position where the second ice tray 26b is rotated by 160 ° is set as the deicing position, and when the deicing position is reached, a signal is sent from the position detection switch (not shown) built in the gear motor unit 27 to the control unit 31. Is entered.

  If the deicing position is confirmed in step 660, the process proceeds to step 661, the forward rotation of the second ice tray 26b is stopped, and the process proceeds to step 662.

  In step 662, in order to return the second ice tray 26b to the horizontal position, the second ice tray 26b is reversed.

  In step 663, it is confirmed whether or not the second ice tray 26b has returned to the horizontal position. In the present embodiment, when the second ice tray 26 b reaches the horizontal position, a signal is input to the control unit 31 from a position detection switch (not shown) built in the gear motor unit 27.

  If the horizontal position is confirmed in step 663, the process proceeds to step 664, the reverse rotation of the second ice tray 26b is stopped, and the ice removal operation mode is ended in step 665.

  The series of operations according to the second embodiment has been described above with reference to the flowcharts.

  When the remaining water in the water supply tank 11 is low, water is supplied only to one ice tray. Therefore, if the ice tray to be supplied first is specified and the ice making state of the ice tray is managed, the other ice tray It is possible to estimate and control the ice making state.

  In the present embodiment, “first discharge port 108a and first ice tray 26a” and “second discharge port 108b and second ice tray 26b” correspond to each other, and which discharge port corresponds to which ice tray. It is further clarified that “the motor 22 is reversely rotated and discharged from the first discharge port 108a to the first ice tray 26a”, and “the motor 22 is rotated forward and the second discharge port 108b is discharged to the second ice tray 26b”. Thus, the rotation direction of the motor 22 and the ice tray are made to correspond one to one.

  During the water supply operation, the motor 22 is always reversed first to supply water to the first ice tray 26a. And since the temperature sensor is closely fixed to the bottom surface of the first ice tray 26a to control the temperature, if the temperature sensor 30 detects that the ice making is completed in the first ice tray 26a, it is surely made. It can be determined that the ice making is completed in the second ice tray 26b.

  In the flow chart of the water supply operation, “T3 ≧ 5” is set in step 454 and “T4 ≧ 5” is set in step 459, and the amount of water supplied to the first ice tray 26a and the second ice tray 26b is the same. However, the amount of water supplied to the first ice tray 26a may be larger than the amount of water supplied to the ice tray 26b as “T3 ≧ 6”. As a result, the time required for ice making in the first ice tray 26a is longer than that in the second ice tray 26b. Therefore, if the temperature sensor 30 detects that the ice making is completed in the first ice tray 26a, it is surely possible. It can be determined that the second ice tray 26b has completed ice making.

  Although the first ice tray 26a and the second ice tray 26b have the same volume in the present embodiment, the same effect can be obtained by increasing the volume of the first ice tray 26a and increasing the reverse rotation time of the motor 22. can get.

  In the deicing operation of the present embodiment, the second ice tray 26b reliably completes ice making by setting a waiting time of 15 minutes after the first ice tray 26a is deiced. Therefore, it is not necessary to provide the ice making sensor 30 in the second ice making tray 26b.

  Further, when the door of the refrigerator compartment 2 or the freezer compartment 3 is opened immediately before the water supply operation, the water supply operation is not performed, so that the water is scattered even if the water supply tank 11 is removed or the ice tray 26 is touched. There is no.

  In addition, as a control means when the door of the refrigerator compartment 2 or the freezer compartment 3 opens, it is not restricted only to said means, For example, the refrigerator compartment 2 or the freezer compartment 3 is supplied to the 1st ice tray 26a while supplying water. When the door of the refrigerator compartment 2 or the freezer compartment 3 is opened during the water supply to the second ice tray 26b, the water supply to the first ice tray 26a is completed without stopping. Water supply to the ice tray 26b may be stopped. In any case, the first ice tray 26a is always directed to have a larger amount of water supply than the second ice tray 26b, so that the ice making on the first ice tray 26a side is always longer than the second ice tray side. It is reasonable that only one ice lever 29 and one temperature sensor 30 are provided.

  On the contrary, the temperature sensor 30 is provided in the first ice tray 26a and the second ice tray 26b so that the water supply to the ice tray 26 is stopped when the door of the refrigerator compartment 2 or the freezer compartment 3 is opened during the water supply operation. It may be. As a result, there is an advantage that the user does not feel uncomfortable with the sound during water supply.

  Further, when the door of the refrigerator compartment 2 or the freezer compartment 3 is opened during the water supply to the ice tray 26, if the water supply to the ice tray 26 is interrupted and the remaining time is supplied after the door is closed, it is halfway. There is no water supply, and ice of uniform size can be provided.

  Further, when the door of the refrigerator compartment 2 or the freezer compartment 3 is opened immediately before the deicing operation, the deicing operation is not performed, so that the user is not uncomfortable with the sound during deicing. It is done.

  Furthermore, if the door of the refrigerator compartment 2 or the ice making chamber 3 is opened during the deicing operation, if the deicing operation is interrupted until the door is closed, the user may feel uncomfortable with the sound during deicing. The advantage of not being obtained. In this case, after the door is closed, if the ice tray 26 is returned to the horizontal position and the ice removing operation is performed again regardless of the stop position of the ice tray 26, the malfunction can be prevented.

  Further, if the user can make one of the two ice trays 26 in a non-ice-making state, in particular, the second ice tray 26b side that is not equipped with a temperature sensor is made in a non-ice-making state. In this case, at least conventional ice making is possible, and the space can be used as a storage room.

  More specifically, the two ice trays 26 are brought close to the end of the freezer compartment 3, the first ice tray 26a having the temperature sensor 30 is disposed on the side wall side, and the second ice tray 26b far from the side wall is disposed. If the side is made incapable of making ice, the use space of the freezer compartment will be expanded.

  By providing the refrigerator with the automatic ice making device as described above, it is possible to make ice twice as much as before, and a refrigerator suitable for ice consumption of a large family can be provided.

  Furthermore, since the number of parts has been reduced, it is possible to provide a volume-efficient refrigerator having a reduced size in the width direction despite the use of two ice trays.

  Furthermore, it is possible to provide a quiet refrigerator that does not leak operation noise when the door is opened.

  Furthermore, ice making with only one ice tray is possible according to the needs of the user. At that time, the freezer can be used widely and effectively, so that a very convenient refrigerator can be provided.

The front view which shows Embodiment 1 of the automatic ice making apparatus by this invention Partial side view of the same embodiment Sectional drawing of the pump in the same embodiment A flowchart showing the basic operation of the embodiment The flowchart which shows the water supply operation | movement of the embodiment Flowchart showing ice making standby in the same embodiment Flow chart showing the de-icing operation of the embodiment Sectional drawing of the pump in Embodiment 2 of the automatic ice making machine by this invention The flowchart which shows the water supply operation | movement of the embodiment Flowchart showing ice making standby in the same embodiment Flow chart showing the de-icing operation of the embodiment Partial sectional view of the refrigerator Front view of main parts of a conventional automatic ice making device

Explanation of symbols

11 Water supply tank 18, 108 Discharge port 18a, 108a 1st discharge port 18b, 108b 2nd discharge port 19 Discharge pipe 19a 1st discharge port 19b 2nd discharge port 22 Motor 24, 114 Pump 24a 1st pump 24b 2nd pump 26 Ice tray 26a First ice tray 26b Second ice tray 27 Gear motor unit 28 Ice storage box 29 Ice detection lever 30 Temperature sensor 32 Air outlet 104 Spiral wheel 114 Pump

Claims (17)

  Water is supplied from a water supply tank that stores water to two ice trays arranged in a sub-freezing atmosphere by a pump, and after the completion of ice making, the two ice trays are twisted by a gear motor unit that twists the two ice trays. In the automatic ice making device for deicing to the ice storage box located below, the temperature sensor for detecting completion of ice making is fixed tightly only to the bottom surface of one of the two ice trays. An automatic ice making device, characterized in that water is supplied to an ice tray equipped with water.   Water is supplied from a water supply tank that stores water to two ice trays arranged in a sub-freezing atmosphere by a pump, and after the completion of ice making, the two ice trays are twisted by a gear motor unit that twists the two ice trays. In the automatic ice making device for deicing to the ice storage box located below, a temperature sensor that detects completion of ice making is closely fixed only to the bottom surface of one ice making tray of the two ice making trays. An automatic ice making device characterized in that when water is supplied, the amount of water supplied to the ice tray provided with the temperature sensor is larger than the amount supplied to other ice trays.   The two ice trays have the same volume, and the drive time of the pump when supplying water to the ice tray equipped with the temperature sensor is longer than the drive time of the pump when supplying water to other ice trays. The automatic ice making device according to claim 2.   3. The two ice trays each having the same volume, wherein an inner diameter of a discharge pipe leading to an ice tray equipped with the temperature sensor is made larger than an inner diameter of a discharge pipe leading to another ice tray. Automatic ice making device as described.   Of the two ice trays, the ice tray having the temperature sensor has a larger volume than the other ice trays, and the pump drive time when supplying water to the ice tray having the temperature sensor is transferred to the other ice trays. 3. The automatic ice making device according to claim 2, wherein the pump driving time is longer than that for supplying water. Of the two ice trays, the ice tray with the temperature sensor has a larger volume than the other ice trays, and the inner diameter of the discharge pipe leading to the ice tray with the temperature sensor is the inner diameter of the discharge pipe leading to the other ice tray. The automatic ice making device according to claim 2, wherein the automatic ice making device is larger.   Water is supplied from a water supply tank that stores water to two ice trays arranged in a sub-freezing atmosphere by a pump, and after the completion of ice making, the two ice trays are twisted by a gear motor unit that twists the two ice trays. In the automatic ice making device for deicing the ice storage box located below, a temperature sensor for detecting completion of ice making is closely fixed to only the bottom surface of one of the two ice making trays, An automatic ice making device characterized in that the amount of cold air blown to an ice tray equipped with the temperature sensor is less than the amount of cold air blown to other ice trays.   8. The automatic ice making device according to claim 7, wherein an ice making tray provided with the temperature sensor among the two ice making trays is further away from the cold air outlet than other ice making trays.   Water is supplied from a water supply tank that stores water to two ice trays arranged in a sub-freezing atmosphere by a pump, and after the completion of ice making, the two ice trays are twisted by a gear motor unit that twists the two ice trays. In the automatic ice making device for deicing the ice storage box located below, a temperature sensor for detecting completion of ice making is closely fixed to only the bottom surface of one of the two ice making trays, Automatic ice making, characterized in that the amount of water supplied to each ice tray is approximately the same, and the two ice trays are twisted and separated after a predetermined time from the time when the temperature sensor detects completion of ice making. apparatus.   Water is supplied from a water supply tank that stores water to two ice trays arranged in a sub-freezing atmosphere by a pump, and after the completion of ice making, the two ice trays are twisted by a gear motor unit that twists the two ice trays. In the automatic ice making device for deicing the ice storage box located below, a temperature sensor for detecting completion of ice making is closely fixed to only the bottom surface of one of the two ice making trays, Water supply to each ice tray is approximately the same amount, and the ice tray equipped with the temperature sensor completes the deicing operation and performs the deicing operation of the other ice trays after a predetermined time has elapsed. Ice making equipment.   Water is supplied from a water supply tank that stores water to two ice trays arranged in a sub-freezing atmosphere by a pump, and after the completion of ice making, the two ice trays are twisted by a gear motor unit that twists the two ice trays. In the automatic ice making device for deicing to the ice storage box located below, the temperature sensor for detecting the completion of ice making is closely fixed only to the bottom surface of one of the two ice making trays. An ice detecting lever that waits upward and descends into the ice storage box at a predetermined time to detect excess or deficiency of ice is provided only on the ice making tray provided with the temperature sensor of the two ice making trays. An automatic ice making machine.   The automatic ice making device according to claim 11, wherein an inner bottom surface of the ice storage box is continuously inclined and becomes deeper toward the ice detecting lever.   When the ice detecting lever is lowered into the ice storage box and the ice detecting operation for detecting the excess or shortage of ice in the ice storage box is performed prior to water supply to the two ice trays, and it is determined that the ice is sufficient The automatic ice making device according to claim 11, wherein no water is supplied to the ice tray.   12. The automatic ice making device according to claim 11, wherein when the two ice trays are twisted and deiced, the ice making plate on the side where the ice detecting lever is not provided is first deiced. The ice detecting lever is lowered into the ice storage box and the ice detecting operation for detecting the excess or shortage of ice in the ice storage box is performed every time the ice making operation of each of the two ice trays is completed. The automatic ice making device according to claim 11.   The ice detachment of the other ice tray is not performed when the ice in the ice storage box becomes sufficient by the icing of one of the two ice trays. Automatic ice making device as described. Refrigerator having an automatic ice making apparatus as claimed in any one of claims 16.

Images