JP5095507B2 - Apparatus and refrigerator equipped with ice crusher - Google Patents

Description

  The present invention relates to an apparatus and a refrigerator provided with an ice crusher, and is particularly suitable for a refrigerator refrigerator having an ice crusher disposed in a freezer compartment.

  A conventional apparatus equipped with an ice crusher includes a type in which block ice is crushed with a rotating blade rotated by a driving device such as a motor and a fixed blade fixed to an ice crusher case. In an apparatus equipped with this type of ice crusher, the block ice may not be broken at a time, or the block ice may be clogged between the rotary blade and the fixed blade, so that the drive device may be in a restrained state.

Therefore, an ice crusher described in Japanese Patent Laid-Open No. 5-180548 (Patent Document 1) has been devised. This patent document 1 discloses an ice crusher for rotating ice in a hopper to rotate and rotate the rotary cutter in both forward and reverse directions. Constraint detection means for detecting that the rotation cutter cannot be rotated in the operation direction during operation, and that the restriction is detected by the constraint detection means and output to the drive unit to rotate the rotation cutter in the reverse direction from the operation direction. And a stop control means for stopping the operation after the operation is performed.

Further, an ice crusher described in JP-A-11-257813 (Patent Document 2) has been devised. In this patent document 2 , ice that is thrown into a hopper is crushed by rotating a movable tooth, and an ice crusher disposed in a freezer refrigerator or the like that makes ice pieces rotates the movable tooth in both forward and reverse directions by a motor. A drive unit to be operated, a constraint detection unit for detecting that the movable tooth cannot rotate in the driving direction during the operation of the ice crusher, and a constraint state is detected. It is disclosed to include a control means for rotating the movable tooth in the reverse direction from the operation direction and then rotating the movable tooth in the normal direction again.

Japanese Patent Laid-Open No. 5-180548 Japanese Patent Application Laid-Open No. 11-257813

  However, the ice crusher of Patent Document 1 stops the driving device when the ice cannot be crushed by one forward rotation of the rotary cutter, so that the ice crushing ability is low.

  On the other hand, in the ice crusher of Patent Document 2, when the ice enters in a state where it cannot be crushed or when a foreign object that cannot be crushed enters, the reverse rotation and forward rotation of the movable tooth are repeated endlessly. As a result, energy is wasted and the reliability of the movable part is reduced.

  Furthermore, in Patent Documents 1 and 2, when a foreign object having the same size as the block ice enters and the ice cannot be crushed, the user must put the hand in the ice crusher and take out the foreign object. There is a problem that it takes time to restore the crusher.

  The objective of this invention is providing the apparatus provided with the ice crusher which can aim at energy saving and the improvement of reliability, ensuring the crushing capability of ice.

  Another object of the present invention is to provide a device and a refrigerator provided with an ice crusher that can easily discharge a foreign substance with a drive device in a restrained state.

The first aspect of the present invention for achieving the above object is an ice crusher for rotating a rotating blade forward and crushing block ice between fixed blades arranged opposite to the rotating blade. A driving device that is disposed below the ice crusher and drives the rotary blade, a control device that controls the driving device, detection means that detects a restraint state of the driving device, and ice crushed by the ice crusher And a crusher case having a crushing ice discharge port for discharging the outside to the outside, the control device reversely rotates the rotary blade when the detection means detects the restraint state of the drive device. controlled to perform a positive rotation from by the said rotary blade is fixed to a rotary shaft extending upward from the drive device, first round extending to be symmetrical on both sides from the rotating shaft A blade and a second rotary blade, and the fixed blade is provided across the rotary shaft and the crusher case, and the position of the rotary blade is determined by the angle detection means of the rotary blade or the drive of the drive device The angle at which the rotary blade is operated to rotate backward is controlled based on a timer for measuring the time, and the block ice between the first rotary blade and the fixed blade is released and the first rotation is performed. The block ice located between the back side of the blade and the blade side of the second rotary blade is carried to the back side of the first rotary blade and is limited to a predetermined angle at which it is not discharged from the crushed ice discharge port. Te, wherein the reverse rotation by crushing the blocks of ice repeatedly in line Ukoto control in the forward rotation, if the number of repetitions of the positive rotation from the reverse rotation exceeds a predetermined number of times, the Control to stop the drive In the door.

A more preferable specific configuration example in the first aspect of the present invention is as follows.
(1 ) An ice bank for storing block ice and an auger for supplying the block ice stored in the ice bank into the crusher case from the ice supply port of the ice bank.
( 2 ) An ice duct for guiding the crushed ice discharged from the crushed ice discharge port to the ice take-out port is provided.
( 3 ) A block ice discharge port provided in the crusher case, an ice switching lid that opens and closes the block ice discharge port, and a lid driving device that opens and closes the ice switching lid.
( 4 ) The control device controls the ice switching lid to close when discharging the crushed ice from the crusher case, and opens the ice switching lid when discharging the block ice from the crusher case. To control .
( 5 ) A display panel for displaying an error is provided, and the control device controls to display an error on the display panel as a foreign object is caught in the ice crusher when the number of repetitions exceeds a predetermined number. thing.
( 6 ) A foreign matter removal button is provided, and the control device regards that the drive device is placed in a restrained state when the number of repetitions exceeds a predetermined number and the foreign matter removal button is pressed. Then, the ice switching lid is opened, the rotary blade is rotated in the reverse direction, and the foreign matter is discharged from the block ice discharge port by the rotary blade.

In addition, the second aspect of the present invention for achieving the above-described another object includes an ice crusher that crushes block ice, a drive device that is disposed below the ice crusher and drives a rotary blade, and the drive A crusher case, wherein the ice crusher has a crushing ice discharge port and a block ice discharge port, wherein the ice crusher includes a control device that controls the device, a detection unit that detects a restraint state of the drive device, and a foreign matter removal button. And a first rotating blade and a second rotating blade fixed to a rotating shaft extending above the driving device and extending symmetrically on both sides from the rotating shaft, and forward and reverse directions in the crusher case A rotating blade that is rotated on the rotating blade, a fixed blade that is disposed opposite to the rotating blade and is fixed to the crusher case, and an ice changer that opens and closes the block ice discharge port Comprising a lid and a lid driving device for opening and closing the ice switch cover, wherein the fixed blade is provided across said crusher casing and the rotary shaft, the position of the rotary blade, the angle detection of the rotary blade Or a timer that measures the driving time of the driving device, and when the detecting device detects the restrained state of the driving device by the detecting means, the control device performs a normal rotation operation after reversely rotating the rotary blade. The rotation angle of the rotating blade is controlled so as to crush the block ice, and the angle at which the rotating blade is reversely rotated cancels the sandwiching of the block ice between the first rotating blade and the fixed blade. In addition, block ice positioned between the back side of the first rotary blade and the blade side of the second rotary blade is carried on the back side of the first rotary blade, and is discharged from the crushed ice discharge port. and limited to a predetermined angle which is not discharged, When the foreign matter take-out button is pressed, it is assumed that the drive device is in a restrained state is a foreign matter, the ice switching lid is opened, the rotary blade is rotated in the reverse direction, and the rotary blade The foreign object is controlled to be discharged from the block ice discharge port.

The third aspect of the present invention for achieving the above object is an ice crusher that crushes by sandwiching block ice between a fixed blade that is fixedly disposed opposite to the rotary blade by rotating the rotary blade forward. And a driving device that is disposed below the ice crusher and drives the rotary blade, a control device that controls the driving device, detection means that detects a restraint state of the driving device, and crushing by the ice crusher A crusher case having a crushing ice discharge port for discharging ice to the outside , wherein the fixed blade is provided across the rotating shaft and the crusher case, and the position of the rotating blade is the rotation controlled based on a timer for measuring the driving time of the blade angle detecting means or the driving device, wherein the control device, when detecting a constrained state of said driving apparatus by the detection means, before The rotary blade from by the reverse rotation operation the controlled so as to crush the block ice by performing the forward rotation operation, the rotary blade is fixed to the rotary shaft extending upward of the driving device, the A first rotary blade and a second rotary blade that extend symmetrically from the rotation axis on both sides are provided, and an angle at which the rotary blade is operated in reverse rotation is between the first rotary blade and the fixed blade. The block ice that is located between the back side of the first rotary blade and the blade side of the second rotary blade is released on the back side of the first rotary blade. When the control from the reverse rotation operation to the forward rotation operation is repeated by limiting to a predetermined angle at which the ice is not discharged from the crushed ice discharge port , and the number of repetitions exceeds a predetermined number, the drive device The control is to stop the operation.

  ADVANTAGE OF THE INVENTION According to this invention, the apparatus and refrigerator provided with the ice crusher which can aim at energy saving and the improvement of reliability can be provided, ensuring the crushing capability of ice.

  Hereinafter, an embodiment of an apparatus including an ice crusher according to the present invention will be described with reference to FIGS. In this embodiment, the apparatus provided with the ice crusher is a refrigerator. The apparatus provided with the ice crusher of the present invention may be a freezer, a freezer showcase, a vending machine or the like.

  FIG. 1 is a front view of a refrigerator which is an embodiment of an apparatus including an ice crusher according to the present invention.

  The refrigerator includes a heat insulating box composed of a refrigerator body and a refrigerator door. The refrigerator main body has the freezer compartment 1, the refrigerator compartment 2, and the vegetable compartment 30 inside. An ice crusher 9 is installed in the freezer compartment 1. The refrigerator door includes a freezer compartment door 31 that opens and closes the freezer compartment 1, a refrigerator compartment door 32 that opens and closes the refrigerator compartment 2, and a vegetable compartment door 33 that opens and closes the vegetable compartment 30.

  The freezer compartment door 1 is provided with a display panel 3, a foreign matter takeout button 8, a booth 5, an ice takeout port 6, and a drive switch 7.

  The display panel 3 displays the operation state of the refrigerator including the ice crusher 9, and is composed of a liquid crystal panel and a display lamp. This display panel 3 is installed in the upper front part of the freezer compartment door 1. The foreign matter removal button 8 is for starting the operation of taking out the foreign matter, and is installed adjacent to the display panel 3 at the upper front of the freezer compartment door 1.

  The booth 5 is provided in a concave shape in the depth direction from the front surface of the freezer door 1. The ice take-out port 6 is for taking out the ice crushed by the ice crusher 9 to the outside of the refrigerator, and is installed on the ceiling surface of the booth 5. The drive switch 7 is for energizing the motor 10 to drive the ice crusher 9, and is installed in the back surface of the booth 5. The user can drive the ice crusher 9 by energizing the motor 10 by holding the cup or the like and pressing the drive switch 7.

  FIG. 2 is a sectional view of the ice crusher 9 of FIG. 1 and its peripheral portion. The ice crusher 9 includes a crusher case 35 having a crushing ice discharge port 19, a rotary blade 17 that is fixed to the rotary shaft 11 of the motor 10 that is a driving device and is rotated in the forward and reverse directions within the crusher case 35, and a rotary blade 17 and a fixed blade 16 that is disposed to face the crusher case and is fixed to the crusher case 35. A plurality of rotary blades 17 and fixed blades 16 are provided alternately in the direction of the rotary shaft 11.

  The ice crusher 9 crushes the block ice 18 with the fixed blade 16 by rotating the rotary blade 17 in the forward direction. A motor 10 for driving the ice crusher 9 is disposed below the ice crusher 9. The rotary shaft 11 extends upward from the motor 10 and transmits the power of the motor 10 to the rotary blade 17 of the ice crusher 9.

  A cylindrical ice bank 13 for storing block ice 18 is installed on the ice crusher 9. An ice supply port 36 having a size capable of passing one or two block ices 18 is formed in a part of the lower surface of the ice bank 13. The ice supply port 36 is for connecting the internal space of the ice bank 13 and the internal space of the crusher case 35 to drop the block ice 18 in the ice bank 13 into the crusher case 35.

  In the ice bank 13, an auger 14 for supplying the block ice 18 stored in the ice bank 13 one by one into the crusher case 35 from the ice supply port 36 of the ice bank 13 is installed. The auger 14 is fixed to the upper end portion of the rotary shaft 11 and is rotated in synchronization with the rotary blade 17.

  An automatic ice making device 12 is installed above the ice bank 13. The automatic ice making device 12 is for making block-shaped ice and is attached to the ceiling in the freezer compartment 1. The block ice 18 made by the automatic ice making device 12 is stored in an ice bank 13 below the automatic ice making device 12.

  One end of the ice duct 15 faces below the crushed ice discharge port 19. The ice crushed by the ice crusher 9 falls into the ice duct 15 through the crushed ice discharge port 19. The other end of the ice duct 15 is connected to an ice takeout port 6 installed on the ceiling surface of the booth 5, and the crushed ice is discharged from the ice takeout port 6.

FIG. 3 is a top view of the ice bank 13 of FIG. In FIG. 3, the ice supply port 36 is highlighted by a hatched portion. When the auger 14 rotates in the direction of the arrow and passes over the ice supply port 36, the block ice 18 in the ice bank 13 is put into the ice crusher 9. The number of block ices 18 to be charged is usually 1 to 2.

  4 is a view for explaining ice crushing of the ice crusher 9 of FIG. 2, FIG. 4 (a) is a top view of the ice crusher 9, and FIG. 4 (b) is a longitudinal sectional view of the ice crusher 9. FIG.

  The central portion of the rotary blade 17 is fixed to the rotary shaft 11, and the rotary blade 17 includes two rotary blades 17 a and 17 b that extend symmetrically from the rotary shaft 11 to both sides. That is, the rotary blade 17 is provided with blades 17 a and 17 b at an angle of 180 degrees around the rotary shaft 11. The fixed blade 16 is provided across the rotating shaft 11 and the crusher case 35.

  The block ice 18 thrown into the ice crusher 9 is carried to the fixed blade 16 by the rotating blade 17 rotating in the forward rotation direction (clockwise) and is crushed by being sandwiched between the two blades. When the rotary blade 17 makes one rotation in the forward rotation direction, the block ice 18 can be crushed twice. On the bottom surface of the ice crusher 9, a crushed ice discharge port 19 emphasized by shading in FIG. 4 is provided, and the crushed ice is discharged from the crushed ice discharge port 19 to the ice duct 15.

  FIG. 5 is a view for explaining the ice switching cover 20 of the ice crusher 9 of FIG. 2, FIG. 5 (a) is a top view showing the relationship between the crusher case 35 and the ice switching cover 20, and FIG. It is a longitudinal cross-sectional view in a state where the lid 20 is opened.

  A semicircular opening is formed on the bottom surface of the crusher case 35, and half of the opening is used as the crushed ice discharge port 19, and the other half is used as the block ice discharge port 37. An ice switching lid 20 is disposed at the block ice discharge port 37. The ice switching lid 20 has a quarter of a semicircular shape, and as shown in FIG. 5B, the block ice discharge port 37 is opened by rotating downward with the rotation shaft side as a fulcrum. As a state, the block ice 18 can be directly discharged without being crushed ice. The ice switching lid 20 is disposed adjacent to the crushed ice discharge port 19.

  FIG. 6 is a block diagram showing the configuration of the control system of the refrigerator shown in FIG. FIG. 6 shows a configuration related to the ice crusher 9.

  The control device 21 is for controlling a refrigerator including equipment related to the ice crusher 9, and is configured by a microcomputer. The control device 21 includes a counter 38 that counts the number of times the motor 11 is restrained and a timer 39 that measures the time for driving the motor 11.

  Signals are input to the crushed ice discharge port 19 from the ice takeout port 6, the foreign matter takeout button 8, the restraint detection means 23, and the angle detection means 24. The crushed ice discharge port 19 performs predetermined arithmetic processing based on these input signals, operations of the counter 38 and the timer 39, and outputs a signal of the processing result to the display panel 3, the motor driving means 22 (motor 10), Output to the lid driving means 25 (ice switching lid 20).

  The motor driving means 22 drives the motor 11 by a signal from the control device 21 and is constituted by a driving circuit. The constraint detection means 23 is for detecting the constraint state of the motor 11. The angle detection means 24 is for detecting the angle (or position) of the rotary blade 17 of the ice crusher 9. The ice switching lid driving means 25 opens and closes the ice switching lid 20 from a signal from the control device 21, and is constituted by a drive circuit.

  FIG. 7 is an operation flowchart when generating and discharging crushed ice. When generating and discharging crushed ice, the ice switching lid 20 is closed.

  First, it is determined whether the drive switch 7 installed in the booth 5 has been pressed (step S1). If it is determined that the drive switch 7 has not been pressed, the motor 10 is stopped (step S10), and the process returns to step S1.

  If the drive switch 7 is pressed in the determination in step S1, the motor 10 rotates the motor 10 in the normal rotation direction (step S2). As a result, the rotary blade 17 and the auger 14 also perform forward rotation, start the ice breaking operation by the rotary blade 17 and the fixed blade 16, and supply the block ice 18 from the ice bank 13 to the crusher case 35.

  Next, it is determined whether the motor 11 is in a restrained state (step S3). That is, in step S3, the restraint detection unit 23 monitors the restraint state of the motor 10. If the restraint state of the motor 11 is not detected in the determination in step S3, the counter 38 is cleared (step S9), and the process returns to step S1. If the drive switch 7 is pressed in step S, the motor 11 continues to rotate normally and the ice breaking operation continues.

  However, in step S3, when the block ice 18 cannot be crushed at a time depending on the contact condition between the block ice 18 and the rotary blade 17, and foreign matter has entered the ice crusher 9, the fixed blade 16 and the rotary blade 17 Thus, the motor 11 is in a restrained state with the block ice 18 and the foreign object sandwiched therebetween. At this time, the detection means 23 detects the restrained state of the motor 10, determines in step S3 that the motor 11 is restrained, and proceeds to step S4.

  In step S4, the motor 10 is rotated in the reverse direction, the rotary blade 17 is rotated in the reverse direction by a predetermined angle θ °, and the position between the block ice 18 or the foreign object and the rotary blade 17 sandwiched between the rotary blade 17 and the fixed blade 16 is determined. Move. Here, if the rotary blade 17 is rotated backwards too long, the gap between the back side of the blade 17a to be crushed by the rotary blade 17 of the ice classy 9 and the blade side of the other rotary blade 17b in FIG. As shown in FIG. 8, the block ice 18 stored in the container is carried by the back of the blade 17 a and falls from the crushed ice discharge port 19, and the block ice 18 may be discharged from the ice takeout port 6. Therefore, the angle at which the rotary blade 17 is rotated in reverse is such that the block ice 18 accumulated on the back side of the blade 17a to be crushed by the rotary blade 17 and the blade side of the other rotary blade 17b falls from the crushed ice discharge port 19. There is no range.

  Next, the counter 38 of the control device 21 counts the number of reverse rotations (step S5), and determines whether the counter 38 exceeds a predetermined number (n times) (step S6). If it is determined that the predetermined number of times has not been exceeded, the process returns to step S1, and the motor 10 is rotated forward in step S2 to restart the crushing operation of the block ice 18. By performing this multiple times, the block ice 18 can be crushed in most cases.

  The position of the rotary blade 17 may be controlled not only by the angle detecting means 24 of the rotary blade 17 but also by a control means such as a timer for controlling the rotation time of the motor 10.

  If it is determined in step S6 that the number of counters 38 exceeds the predetermined number, it is considered that foreign matter has entered, the motor 10 is stopped in step S7, and the ice crusher 9 is displayed on the display panel 3 in step S8. An error indicating that there is a foreign object inside is displayed.

  The operation after the error is displayed will be described with reference to the flowchart of FIG.

  In the operation after the error is displayed, it is determined whether or not the foreign matter extraction button 8 has been pressed (step S11). If it is determined in this determination that the foreign matter removal button 8 has not been pressed, step S11 is repeated. This state is continued until the user sees the error display displayed on the display panel 3 and presses the foreign matter removal button 8.

  If it is determined in step S11 that the foreign matter removal button 8 has been pressed, the ice switching cover 20 of the ice crusher 9 is opened (step S12). Then, the motor 10 is rotated in the reverse direction, and the rotary blade 17 is rotated about one turn in the reverse direction (step S13). When the rotary blade 17 is rotated in the reverse direction, as shown in FIG. 10, the foreign matter 27 is carried to the ice switching lid 20 by the back of the rotary blade 17 and discharged.

  Next, the ice switching cover 20 is closed (step S14), the counter 38 of the control device 21 is returned to 0, and the error display on the display panel 3 is turned off (step S15).

  The ice crusher 9 can be returned to a state where crushed ice can be made by a series of operations shown in FIG.

  According to the present embodiment, it is possible to reliably crush ice, and to remove any foreign matter, and to provide an apparatus equipped with an ice crusher that makes the drive device less likely to be in a restrained state and less likely to break down. can do.

It is a front view of the refrigerator which is one Embodiment of the apparatus provided with the ice crusher of this invention. It is sectional drawing of the ice crusher of FIG. 1, and its peripheral part. FIG. 3 is a top view of the ice bank of FIG. 2. It is a figure explaining the ice crushing of the ice crusher of FIG. It is a figure explaining the ice switching cover of the ice crusher of FIG. It is a block diagram which shows the structure of the control system of the refrigerator of FIG. It is an operation | movement flowchart when producing | generating and discharging | emitting the crushed ice by the control system of FIG. It is a top view inside an ice crusher when the rotary blade in the control of FIG. It is an operation | movement flowchart when discharging the foreign material of the ice crusher by the control system of FIG. FIG. 10 is a top view of the inside of the ice crusher when discharging foreign matter in the control of FIG. 9.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Freezer room, 2 ... Refrigerated room, 3 ... Display panel, 5 ... Booth, 6 ... Ice taking-out port, 7 ... Drive switch, 8 ... Foreign matter taking out button, 9 ... Ice crusher, 10 ... Motor, 11 ... Rotating shaft, DESCRIPTION OF SYMBOLS 12 ... Automatic ice making device, 13 ... Ice bank, 14 ... Auger, 15 ... Ice duct, 16 ... Fixed blade, 17 ... Rotating blade, 18 ... Block ice, 19 ... Breaking ice discharge port, 20 ... Ice changeover lid, 21 ... Control device (microcomputer), 22 ... motor driving means, 23 ... restraint detecting means, 24 ... angle detecting means, 25 ... lid driving means, 27 ... foreign matter, 35 ... crusher case, 36 ... ice supply port, 37 ... block ice drain Exit, 38 ... counter, 39 ... timer.

Claims (9)

An ice crusher that crushes block ice with a fixed blade arranged opposite to the rotary blade by rotating the rotary blade forward, and a drive that drives the rotary blade arranged below the ice crusher An apparatus, a control device for controlling the drive device, a detection means for detecting a restrained state of the drive device, and a crusher case having a crushing ice discharge port for discharging ice crushed by the ice crusher to the outside. In the equipment provided,
The control device, wherein when detecting a constrained state of said driving apparatus by the detection means, wherein the rotary blade from by the reverse rotation operation is controlled to perform the forward rotation operation,
The rotary blade has a first rotary blade and a second rotary blade fixed to a rotary shaft extending upward from the drive device and extending symmetrically on both sides from the rotary shaft,
The fixed blade is provided across the rotating shaft and the crusher case,
The position of the rotary blade is controlled based on the angle detection means of the rotary blade or a timer that measures the drive time of the driving device, and the angle at which the rotary blade is reversely rotated is fixed to the first rotary blade and the fixed position. Block ice that is sandwiched between the blades of the first rotary blade and the back of the first rotary blade and the blade side of the second rotary blade is released. Limited to a predetermined angle that is carried on the back side and is not discharged from the crushed ice outlet,
Wherein the reverse rotation by crushing the blocks of ice repeatedly in line Ukoto control in the forward rotation, if the number of repetitions of the positive rotation from the reverse rotation exceeds a predetermined number of times, the drive device A device equipped with an ice crusher, characterized in that it is controlled so as to stop the operation. The ice bank according to claim 1 , further comprising: an ice bank that stores block ice; and an auger that supplies the block ice stored in the ice bank into the crusher case from an ice supply port of the ice bank. A device with a crusher. 2. The apparatus with an ice crusher according to claim 1 , further comprising an ice duct for guiding the crushed ice discharged from the crushed ice discharge port to an ice take-out port . 2. The block ice discharge port provided in the crusher case according to claim 1 , an ice switching lid that opens and closes the block ice discharge port, and a lid driving device that opens and closes the ice switching lid. A device with an ice crusher. 5. The control device according to claim 4 , wherein the control device controls the ice switching lid to be closed when discharging the crushed ice from the crusher case, and opens the ice switching lid when discharging the block ice from the crusher case. A device equipped with an ice crusher, characterized in that 2. The display panel according to claim 1 , further comprising a display panel for displaying an error, wherein the control device displays an error on the display panel as a foreign object is caught in the ice crusher when the number of repetitions exceeds a predetermined number. A device with an ice crusher characterized by controlling . 5. The apparatus according to claim 4 , further comprising a foreign matter removal button, wherein the control device is a foreign matter when the driving device is in a restrained state when the repetition count exceeds a predetermined number and the foreign matter removal button is pressed. The ice crusher is characterized in that it is controlled to open the ice switching lid, rotate the rotary blade in the reverse direction, and discharge the foreign matter from the block ice discharge port by the rotary blade. Equipment. An ice crusher that crushes block ice, a drive device that is disposed below the ice crusher and drives a rotary blade, a control device that controls the drive device, and a detection means that detects a restraint state of the drive device; In a device provided with a foreign matter retrieval button,
The ice crusher is fixed to a crusher case having a crushing ice discharge port and a block ice discharge port, and a rotary shaft extending above the drive device, and extends in a symmetric manner on both sides from the rotary shaft. A rotary blade having a blade and a second rotary blade and rotating in the forward and reverse directions in the crusher case; a fixed blade disposed opposite to the rotary blade and fixed to the crusher case; and the block ice An ice switching lid for opening and closing the discharge port, and a lid driving device for opening and closing the ice switching lid,
The fixed blade is provided across the rotating shaft and the crusher case,
The position of the rotary blade is controlled based on a timer that measures the drive time of the angle detection means of the rotary blade or the drive device,
The control device performs control so that the block ice is crushed by performing a normal rotation operation after the rotary blade is rotated in the reverse direction when the detection unit detects the restraint state of the drive device. ,
The angle at which the rotary blade is rotated in reverse is to release the block ice between the first rotary blade and the fixed blade, and the back side of the first rotary blade and the second rotation. The block ice located between the blade side of the blade is carried on the back side of the first rotary blade and is limited to a predetermined angle that is not discharged from the crushed ice discharge port,
When the foreign matter removal button is pressed, it is assumed that the drive device is in a restrained state is a foreign matter, the ice switching cover is opened, the rotary blade is rotated in the reverse direction, and the rotary blade is The apparatus provided with the ice crusher , wherein the foreign matter is controlled to be discharged from the block ice discharge port . An ice crusher that crushes block ice by sandwiching block ice between a fixed blade that is fixedly disposed opposite to the rotary blade by rotating the rotary blade forward, and is disposed below the ice crusher to drive the rotary blade A crusher case provided with a drive device, a control device for controlling the drive device, detection means for detecting a restrained state of the drive device, and a crushing ice discharge port for discharging the ice crushed by the ice crusher to the outside, In the refrigerator with
The fixed blade is provided across the rotating shaft and the crusher case,
The position of the rotary blade is controlled based on a timer that measures the drive time of the angle detection means of the rotary blade or the drive device,
The control device performs control so that the block ice is crushed by performing a normal rotation operation after the rotary blade is rotated in the reverse direction when the detection unit detects the restraint state of the drive device. ,
The rotary blade has a first rotary blade and a second rotary blade that are fixed to the rotary shaft extending above the driving device and extend symmetrically from both sides of the rotary shaft. The angle at which the reverse rotation operation is performed is such that the block ice between the first rotary blade and the fixed blade is released, and the back side of the first rotary blade and the blade of the second rotary blade The block ice located between the side and the side is limited to a predetermined angle that is carried on the back side of the first rotary blade and is not discharged from the crushed ice discharge port,
When the control from the reverse rotation operation to the forward rotation operation is repeatedly performed and the number of repetitions exceeds a predetermined number, control is performed to stop the operation of the drive device.
A refrigerator equipped with an ice crusher.

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