JP2017026228A - Cell type ice machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cell type ice machine capable of preventing ice from being broken in a water drainage groove or a returning hole when ice is removed, reducing consumption amount of washing water and correspondingly reducing its running cost.SOLUTION: A driving state of an inclination motor 35 is controlled by a control part 40 at an ice removing step, and water supply trays 12 and water supply tanks 13 are lowered and inclined from an ice making position to an ice removing position and a tray cleaning position. Upon reaching the ice removing position, the inclination motor 35 is driven under a high speed rotation state and the water supply trays 12 and the water supply tanks 13 are rapidly lowered and inclined. Between the ice making position and the ice removal position, the inclination motor 35 is driven at a low speed rotation state, the water supply trays 12 and the water supply tanks 13 are gradually lowered and inclined to prevent the protruded ice from being broken when the ice is removed and the cracked ice from being left in the water draining groove or returning holes of the water supply trays 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ice making case provided with a group of cells and a cell type ice making machine provided with a water supply tray for ejecting ice making water toward the cells.

  In this type of ice making machine, a cube-shaped ice lump is generated by repeatedly performing an ice making process and an ice removing process. In each step, the water supply tray and the water supply tank are tilted up and tilted toward the ice making case by the tray operation mechanism, or the water supply tray and the water tank are tilted down and away from the ice making case. Regarding the tilting operation of the water supply tray and water tank, the water supply tray (water pan) is stopped at the beginning of the downward tilting in the deicing process, and the room temperature water flows down along the upper surface of the water supply tray that is gently inclined. Patent Document 1 discloses that residual ice attached to the upper surface of the water supply tray is removed.

  In the cell type ice making machine of Patent Document 1, a DC motor capable of variable speed drive is used as a drive source of an opening / closing mechanism (tray operating mechanism), and the water supply tray and the water supply tank are tilted at a high speed or a low speed. Yes. Specifically, at the start of the ice making process, the DC motor is operated at a high speed, the water supply tray is raised and tilted at a high speed, and the DC motor is operated at a low speed so that a sufficient amount of ice making water can be stored in the water supply tank. ing. In the deicing process, the DC motor is operated at high speed only for a few seconds to secure a gap between the water supply tray and the ice making case, and in this state, the ice making water is jetted into the ice block to melt the cloudy part. Next, the DC motor is operated at a low speed, the water supply tray is slowly lowered and tilted and then stopped, and room temperature water is poured to remove residual ice adhering to the upper surface of the water supply tray. Finally, the DC motor is operated at a high speed to tilt the water supply tray downward, and the ice block falling from the cell is discharged into the ice making chamber to complete the ice removal process.

  The present applicant has previously proposed the cell-type ice making machine of Patent Document 2 with respect to preventing ice blocks falling from the ice making case from being caught on the upper surface of the water supply tray. In this case, the water supply / drainage grooves are arranged in a polygonal line to prevent the ice blocks falling from the cells from being caught in the water supply / drainage grooves.

Japanese Patent No. 5138941 (paragraph 0029, FIG. 4) JP 2007-218515 A (paragraph 0029, FIG. 5)

  In the cell-type ice making machine of Patent Document 1, the DC motor is operated at high speed for a few seconds in the ice removing process to secure a gap between the water supply tray and the ice making case, and in this state, the ice making water is ejected to the ice block. Then melt the cloudy part. For this reason, the ice is easily broken by the shocking downward tilt of the water supply tray when the DC motor is operated at high speed, and is easily left behind on the water supply tray side. In particular, when the ice making process is completed, if the ice grows up to the drainage groove or return hole provided in the ice making water injection section and the icing portion is formed on the lower surface of the ice block, Due to the shocking downward tilt of the tray, the icy portion is broken and left behind inside the drainage groove and return hole. Especially, since the descending speed of the tray tip portion far from the tilting axis is larger than the descending speed of other parts, a large impact force is likely to act on the icy portion, and the icy portion is likely to break and remain. Thus, since the residual ice adhering to the drainage groove and the return hole is not easily melted, it is necessary to flow away more washing water, and the running cost of the ice making machine increases accordingly. In addition, if the remaining ice cannot be removed, the wash water blocked by the remaining ice will merge to form a thick stream with a strong flow, and it will fly out from the inclined lower end of the water supply tray. It falls into the chamber, and the cube-shaped ice blocks in the ice making chamber are bound together to form a large block.

The object of the present invention is to provide a cell-type ice making machine that prevents ice from breaking in drainage grooves and return holes at the time of deicing, reduces consumption of washing water, and reduces running costs accordingly. There is to do.
The object of the present invention is to prevent the ice that has grown in the drainage grooves and return holes from cracking, and the washing water at the time of tray cleaning is disturbed by the residual ice, and the ice making chamber vigorously jumps out from the inclined lower end of the water supply tray. It is intended to provide a cell-type ice making machine that can eliminate the flow down to the ice making room and eliminate the formation of ice blocks in the ice making room.

  The ice making machine according to the present invention is directed to a cell-type ice making machine that generates a cube-shaped ice block by alternately performing an ice making process and an ice removing process. An ice making case 10 provided with a group of cells 11 at the upper part of the ice making chamber 1, a water supply tray 12 for supplying ice making water to each cell 11, a water supply tank 13, a water supply tray 12, and a water supply tank 13 at a tray cleaning position And a tray operating mechanism 14 for tilting up and down between the ice making positions. The tray operation mechanism 14 is disposed between the tilting motor 35 capable of forward / reverse driving and variable speed driving, the driving arms 36 and 37 tilted by the tilting motor 35, and the water supply tray 12 and the driving arms 36 and 37. The interlocking spring 39 and the control part 40 which controls the driving | running state of the tilting motor 35 are provided. In the deicing process, the driving state of the tilting motor 35 is controlled by the drive command signal output from the control unit 40, and the water supply tray 12 and the water supply tank 13 are tilted downward from the ice making position to the deicing position and the tray cleaning position. . When the deicing position is reached, the tilting motor 35 is driven in a high-speed operation state, and the water supply tray 12 and the water supply tank 13 are quickly lowered and tilted. Between the ice making position and the deicing position, the tilting motor 35 is driven in a low-speed operation state, and the water supply tray 12 and the water supply tank 13 are slowly lowered and tilted.

  In the ice making process, the drive state of the tilt motor 35 is controlled by the drive command signal output from the control unit 40, and the water supply tray 12 and the water supply tank 13 are raised from the tray cleaning position to the water storage position, the pre-ice making position, and the ice making position. Tilt. Between the water storage position and the pre-ice-making position, the tilting motor 35 is driven in a high speed operation state, and the water supply tray 12 and the water supply tank 13 are quickly lifted and tilted. Between the ice making pre-stage position and the ice making position, the tilting motor 35 is driven in a low-speed operation state, and the water supply tray 12 and the water supply tank 13 are slowly tilted upward.

  In the deicing process, while the water supply tray 12 and the water supply tank 13 are tilted downward from the ice making position to the ice removing position, the tilting motor 35 whose drive mode is set to the stepless speed increasing mode is driven in the low speed operation state. Further, when the water supply tray 12 and the water supply tank 13 reach the tray cleaning position from the deicing position, the tilting motor 35 whose drive mode is set to the step-increasing mode is driven in the high speed operation state.

  In the ice making process, while the water supply tray 12 and the water supply tank 13 are tilted upward from the water storage position to the pre-ice making position, the tilt motor 35 whose drive mode is set to the step-acceleration mode is driven in a high-speed operation state. Further, while the water supply tray 12 and the water supply tank 13 are tilted upward from the pre-ice-making position to the ice-making position, the tilt motor 35 whose drive mode is set to the stepless deceleration mode is driven in the low-speed operation state.

  The tray operating mechanism 14 is provided with a pair of switch cams 55 and 56 that reciprocally rotate in conjunction with the tilting operation of the drive arm 36, and a first switch 57 and a second switch 58 that are switched by the switch cams 55 and 56. Provide. The pair of switch cams 55 and 56 are fixed to the drive shaft 38. The first switch 57 and the second switch 58 are respectively corresponding to the switch cams 55 and 56 in a state where the water supply tray 12 is switched from the tray cleaning position to the ice making position and in a state where the water supply tray 12 is switched from the ice making position to the tray cleaning position. It is provided so that it can be switched to output an ON signal. The water supply tray 12 is switched to the ice making position by one of the ON signals output from the first switch 57 and the second switch 58 and the ON signal output from the other, and the water supply tray 12 is washed by the tray. The controller 40 determines that the position has been switched.

  A water supply unit 15 for supplying ice-making water and tray washing water to the water supply tray 12 and the water supply tank 13 is provided above the water supply tray 12. The water supply unit 15 includes a water supply pipe 48 disposed above the water supply tray 12, a raw water passage 49 communicating with the water supply pipe 48, and an electromagnetic valve 50 provided in the passage 49. In the ice making process, in a state where the water supply tray 12 and the water supply tank 13 are tilted upward from the tray cleaning position to the water storage position, the electromagnetic valve 50 is opened to supply ice making water to the water supply tray 12 and the water supply tank 13. While the water supply tray 12 and the water supply tank 13 ascend and tilt from the pre-ice-making position to the ice-making position, the electromagnetic valve 50 is closed to stop the supply of ice-making water.

  In the ice making machine according to the present invention, the tray operating mechanism 14 is configured by the tilt motor 35, the drive arms 36 and 37, the interlocking spring 39, the control unit 40 that controls the operation state of the tilt motor 35, and the like. In the deicing step, the tilting motor 35 is driven in the low speed operation state from the ice making position to the deicing position so that the water supply tray 12 and the water supply tank 13 are slowly tilted downward. According to such an ice making machine, the water supply tray 12 at the start of deicing can be separated while slowly moving downward from the ice making case 10. Therefore, even if the frosted portion 53 grown inside the drainage groove 26 or the return hole 27 is formed on the lower surface of the ice block, the shearing force acting on the boundary surface between the drainage groove 26, the return hole 27 and the icy portion 53. Thus, the drainage groove 26 and the return hole 27 can be completely removed from the icy portion 53. Accordingly, it is possible to eliminate the impact accompanying the downward tilt acting on the icing portion 53 and breaking from the ice block, and further the broken icing portion 53 remaining in the drain groove 26 and the return hole 27.

  Further, since it is possible to eliminate the cracked icing portion 53 remaining in the drainage groove 26 and the return hole 27, the amount of cleaning water required for tray cleaning can be reduced, and the running cost of the ice making machine can be reduced accordingly. . Since the icing portion 53 is not cracked at the time of deicing and does not remain in the drain groove 26 or the return hole 27, the flow of the cleaning water is disturbed by the residual ice at the time of tray cleaning. Can be prevented from rushing out from the inclined lower end of the water supply tray 12 and flowing down to the ice making chamber 1, thereby preventing ice blocks from binding in the ice making chamber 1. In addition, when the deicing position is reached, the tilting motor 35 is driven in a high-speed operation state, and the water supply tray 12 and the water supply tank 13 are quickly tilted downward, thereby shortening the cycle time required to complete the deicing process. Thus, the ice making efficiency per unit time can be improved.

  In the ice making process, the tilting motor 35 is driven in the low speed operation state between the pre-ice-making position and the ice making position, and the water supply tray 12 and the water supply tank 13 are slowly raised and tilted, so that the water supply tray 12 and the water supply tank 13 move. Overrun with inertia can be eliminated. Along with this, the timing at which the water supply tray 12 stops at the ice making position is made constant, the facing distance between the water supply tray 12 and the ice making case 10 can be made constant at all times, and ice blocks can always be properly generated under constant ice making conditions. In addition, since the tilting motor 35 is driven in a high speed operation state between the water storage position and the pre-ice-making position, the water supply tray 12 and the water supply tank 13 are quickly lifted and tilted, so the cycle time required to complete the ice making process is reduced. By shortening, the ice making efficiency per unit time can be improved.

  When the tilting motor 35 is driven in the stepless speed increasing mode and the water supply tray 12 is tilted downward from the ice making position to the deicing position, the descending speed when the water tray 12 starts to tilt downward is sufficiently reduced. It can be avoided that the shearing force acts on the boundary surface between the drainage groove 26 and the return hole 27 and the icing portion 53 by an impact. Therefore, as compared with the case where the tilting motor 35 is driven in a drive mode other than the stepless speed increasing mode, it is possible to more reliably eliminate the breakage of the frosted portion 53 and remaining in the drain groove 26 and the return hole 27. Further, when the tilting motor 35 is driven in the step-up speed mode and the water supply tray 12 is tilted downward from the deicing position, the water supply tray 12 is kept constant after the lowering speed of the water supply tray 12 reaches a predetermined speed. Since it tilts downward at a speed, it is possible to eliminate an unnecessarily large movement inertia force during the downward tilt. Accordingly, it is possible to prevent the water supply tray 12 from overrunning, prevent the stop position of the water supply tray 12 from varying at the tray cleaning position, and prevent the cycle time required for the deicing process from increasing unnecessarily.

  When the tilting motor 35 is driven in the step-up mode and the water supply tray 12 is tilted upward from the water storage position to the pre-ice-making position, the water supply tray 12 and the water supply tank 13 are stored before a sufficient amount of ice-making water is stored in the water supply tank 13. As a result, the driving load of the tilting motor 35 can be reduced. Further, since the water supply tray 12 is lifted and tilted from the water storage position to the pre-ice making position in a high speed operation state, the cycle time required for the ice making process can be reduced accordingly. Furthermore, when the tilting motor 35 is driven in the stepless deceleration mode and the water supply tray 12 is tilted upward from the pre-ice-making position to the ice-making position, the water supply tray 12 can be tilted upward while gradually decelerating. It is possible to optimize the interval between the water supply tray 12 and the ice making case 10 by stopping at an appropriate ice making position. Therefore, ice blocks can be properly generated under certain ice making conditions.

  The tray operating mechanism 14 is provided with a pair of switch cams 55 and 56 and first and second switches 57 and 58, and the water supply tray 12 is switched to the ice making position by an ON signal output from the switches 57 and 58. And the control unit 40 determines that it has been switched to the tray cleaning position. According to such an ice making machine, the determination of the tray cleaning position and the ice making position by the control unit 40 can be performed more clearly by the ON signals output from the switches 57 and 58. Further, since the first and second switches 57 and 58 are turned on by the switch cams 55 and 56 having a small turning radius fixed to the drive shaft 38, the snap switch 44 is operated by the drive arm 36 having a large rotation radius and peripheral speed. As compared with the case where the switch operation is performed, variation in timing at which the switches 57 and 58 are switched on can be reduced. Therefore, it is possible to reduce the variation in position when the water supply tray 12 and the water supply tank 13 stop at the tray cleaning position or the ice making position, and ice making can always be performed under appropriate ice making conditions.

  In a state where the water supply tray 12 is tilted upward from the tray cleaning position to the water storage position, the electromagnetic valve 50 is opened to supply ice-making water, and the electromagnetic valve 50 is moved while the water supply tray 12 is tilted upward from the pre-ice position to the ice-making position. Was closed to stop the supply of ice making water. According to such an ice making machine, the electromagnetic valve 50 is opened and ice making water begins to be supplied to the water supply tank 13, and at the same time, the water supply tray 12 and the water supply tank 13 can be quickly tilted upward toward the pre-ice making position. Along with this, the water supply tray 12 and the water supply tank 13 can be tilted upward before a sufficient amount of ice making water is stored in the water supply tank 13, so that the driving load of the tilting motor 35 driven between the water storage position and the pre-icemaking position is reached. Can reduce the motor life.

It is a timing chart of the ice making machine which concerns on Example 1 of this invention. 1 is an internal front view of an ice making machine according to Embodiment 1. FIG. 1 is a longitudinal front view of an ice making unit according to Embodiment 1. FIG. 1 is a right side view of an ice making unit according to Embodiment 1. FIG. FIG. 3 is a front view of a main part of the ice making unit according to the first embodiment. 1 is a plan view of an ice making unit according to Embodiment 1. FIG. It is a front view which shows the state which the water supply tray inclined downward to the tray washing position. It is sectional drawing which shows the detail of the ice lump at the time of ice removal and a nozzle hole. FIG. 6 is a cross-sectional view illustrating a switch mechanism according to a second embodiment. 6 is a timing chart of the ice making machine according to Embodiment 2. FIG. 9 is a cross-sectional view illustrating a switch mechanism according to a third embodiment.

Embodiment 1 FIGS. 1 to 8 show Embodiment 1 of a cell type ice making machine according to the present invention. In FIG. 2, the cell-type ice making machine includes an upper ice making chamber 1 configured as a heat insulation box and a machine room 2 defined on the lower side of the ice making chamber 1. A unit 3 is arranged, and cooling units such as a compressor 4, a condenser 5, and a blower fan 6 are arranged inside the machine room 2. Although not shown, an outlet for taking out ice blocks stored at the bottom of the ice making chamber 1 is opened on the front surface of the ice making chamber 1, and this outlet is a door that can be opened and closed by sliding or a rocker. Can be opened and closed with a movable door.

  As shown in FIGS. 2 and 3, the ice making unit 3 is supported by a unit base 9 fixed to the ceiling inner surface of the ice making chamber 1, and an ice making case 10 fixed to the lower surface of the base 9, A water supply tray 12 that supplies ice-making water to a group of provided cells 11 and a water supply tank 13 provided on the lower surface of the water supply tray 12 are configured as main components. In addition to the previous members, the ice making unit 3 has a tray operation mechanism 14 that tilts the water supply tray 12 and the water supply tank 13 up and down between the ice making position and the tray cleaning position, and ice water at room temperature is supplied to the water supply tray 12 and the water supply tank 13. A water supply unit 15 for supplying water and a drain pan 16 for discharging ice-making water remaining in the water supply tank 13 without being made of ice are provided.

  The ice making case 10 is made of a metal square dish-like container having excellent thermal conductivity, and is partitioned in a lattice shape with a group of cells 11 opening downward on its lower surface. On the upper surface of the ice making case 10, a heat exchange pipe 19 functioning as an evaporator is folded and disposed in close contact with the case wall. During ice making, the refrigerant liquid fed from the condenser 5 and decompressed and expanded by an expansion valve (not shown) is vaporized by the heat exchange pipe 19 to cool the ice making case 10 to −25 ° C. At the time of deicing, the hot gas supplied from the compressor 4 is supplied to the heat exchange pipe 19 to heat the ice making case 10 and melt the surface of the cube-shaped ice block formed in the cell 11. Facilitates separation from the cell wall.

  As shown in FIG. 3, the water supply tray 12 includes a square dish-shaped tray body 20 that opens downward, and a water channel frame 21 that is fixed to the lower surface of the water supply tray 12. The water channel frame 21 includes a branch water channel 22 that branches corresponding to the group of cells 11, and a nozzle that supplies ice-making water to the upper wall of the tray body 20 that faces each branch water channel 22 toward the cell 11. A hole 23 is opened. A discharge path 25 of a pressurizing pump 24 provided in the water supply tank 13 is connected to the base end portion 21 a of the water channel frame 21.

  When the pressurizing pump 24 is driven during ice making, the ice making water in the water supply tank 13 is pressurized by the pressurizing pump 24 and fed to each branch water channel 22 and ejected from the nozzle hole 23 into the cell 11. . As shown in FIG. 8, around the nozzle hole 23, a drainage groove 26 and a return hole 27 that allow ice-making water that has not frozen in the cell 11 to flow into the water supply tank 13 are disposed opposite to each other with the nozzle hole 23 therebetween. It is. The pair of drain grooves 26 and the return holes 27 are arranged along the inclination direction of the water supply tray 12 that inclines downward when the ice is removed.

  The water supply tank 13 is formed of a square dish-shaped plastic molded product that opens upward, and its bottom wall 30 is inclined downward toward the suction port 28 of the pressure pump 24. The water supply tank 13 is inclined downward along with the water supply tray 12 at the time of deicing, but on the rear wall side of the inclined lower end side, a drainage basin for discharging ice making water that has not been consumed in the ice making process and tray washing water to the drain pan 16. 31 is provided.

  The water supply tray 12 and the water supply tank 13 are fixed to a tray bracket 32, and are pivotally supported by a tilt shaft 33 provided at the upper end of the bracket 32 so as to be tiltable up and down. The water supply tray 12 and the water supply tank 13 are operated up and down around the tilting shaft 33 by the tray operating mechanism 14, and the ice making position (the position shown in FIG. 3) where the water supply tray 12 faces the lower surface of the ice making case 10, and the water supply tray 12. Is tilted up and down between the tray cleaning position (position shown in FIG. 7) that is inclined downward away from the ice making case 10.

  4 to 6, the tray operating mechanism 14 includes a tilt motor 35 supported by a bracket 34 fixed to the front end of the unit base 9, and a pair of front and rear drive arms 36 that are reciprocally tilted by the motor 35. 37, a drive shaft 38 for connecting both the drive arms 36 and 37 so as to be interlocked, and a tension coil-type interlocking spring 39 hooked between the drive arms 36 and 37 and the water supply tray 12. The tilting motor 35 is a commercially available DC motor with a deceleration unit, which is driven forward and reverse in response to a command signal from the control unit 40 (see FIG. 2) provided on the inner peripheral wall of the ice making chamber 1 and is high speed during forward and backward rotation. Variable speed driving can be performed between the driving state and the low speed driving state.

  The drive arms 36 and 37 are provided with latch arms 41 and 41 for latching the interlocking springs 39, and pins 42 provided on the latch arms 41 and 41 and front and rear of the tilting tip of the water supply tray 12. Both ends of the interlocking spring 39 are hooked between the pin 43 fixed to the surface. The drive arm 36 adjacent to the tilting motor 35 is provided with a switch arm 45 for switching the snap switch (switch) 44 together with the latch arm 41. The switch arm 45 and the switch arm 45 are used to switch the snap switch 44. The snap switch 44 can be switched between an on state and an off state by tilting the lever 46. The control unit 40 controls the driving state of the tilt motor 35 based on the on / off state of the snap switch 44 and the timing data by the timer. Details thereof will be described later.

  As shown in FIG. 3, the water supply unit 15 includes a water supply pipe 48 disposed above the tilting base end of the water supply tray 12, a raw water passage 49 connecting the water supply pipe 48 and a water pipe (not shown), and a raw water passage 49. The electromagnetic valve 50 is provided. A group of water supply holes 51 for supplying tap water (ice-making water) toward the water supply tray 12 is opened on the lower surface of the water supply pipe 48. By supplying normal temperature tap water from the water supply pipe 48, a predetermined amount of ice making water can be stored in the water supply tank 13 in the ice making process, or the upper surface of the water supply tray 12 is washed in the ice removing process. Water can be supplied.

As shown in FIG. 1, the cell-type ice maker configured as described above alternately performs an ice making process and an ice removing process to generate cube-shaped ice blocks and stores them in the ice making chamber 1.
(Ice-making process) In the ice-making process, the controller 40 controls the operation state of the tilting motor 35 to change the water supply tray 12 from the tray cleaning position to the water storage position, the pre-ice-making position, and the ice-making position. As shown in FIG. 7, the drive arm 36 in the tray cleaning position has its latching arm 41 at the 7 o'clock position on the dial of the watch, and holds the water supply tray 12 and the water supply tank 13 in a downward inclined posture. The snap switch 44 is switched to the off state.

  When the ice making process is started in the above state, the tilting motor 35 receiving the drive signal from the control unit 40 is driven to rotate forward in the low speed operation state, and the drive arm 36 is slowly tilted clockwise. Along with this, the water supply tray 12 and the water supply tank 13 are pulled by the interlocking spring 39 and slowly rise and tilt from the tray cleaning position to the water storage position. As soon as the water supply tray 12 and the water supply tank 13 reach the water storage position, the electromagnetic valve 50 is opened, and ice-making water is supplied to the water supply tray 12 and the water supply tank 13. At the same time, the tilting motor 35 is normally rotated in the high speed operation state, and the water supply tray 12 and the water supply tank 13 are quickly tilted upward to the pre-ice-making position.

  When the water supply tray 12 and the water supply tank 13 are tilted up to the pre-ice-making position, the tilting motor 35 is driven to rotate forward in a low-speed operation state, and the water supply tray 12 and the water tank 13 are slowly lifted and tilted to the ice-making position. The electromagnetic valve 50 is closed when the water supply tray 12 reaches the ice making position, and when a predetermined time has elapsed since the opening of the timer, the supply of the ice making water is stopped. In the ice making position, the latch arm 41 of the drive arm 36 switches the snap switch 44 to the on state. As shown in FIG. 3, the upper surface of the water supply tray 12 in this state faces the lower surface of the ice making case 10, and the nozzle hole 23, the drainage groove 26, and the return hole 27 face each cell 11.

  At the same time when the snap switch 44 is switched on, the tilting motor 35 is stopped, the solenoid valve 50 is closed, and then the pressurizing pump 24 is started, so that the ice making water in the water supply tank 13 is branched. It is ejected from the nozzle hole 23 into the cell 11 through the water channel 22. The refrigerant liquid is supplied to the heat exchange pipe 19 just before the snap switch 44 is switched on or at the same time when the snap switch 44 is switched on, thereby cooling the ice making case 10. Thereafter, ice making water is ejected from the nozzle hole 23 into the cell 11 until a cube-shaped ice mass grows in each cell 11 (about 20 to 30 minutes). Simultaneously with the completion of the ice making process, the pressurizing pump 24 is stopped to stop the supply of ice making water.

  In the ice making process, the total time required for the water supply tray 12 and the water supply tank 13 to tilt upward from the tray cleaning position to the ice making position is approximately 40 seconds, and the time required to tilt upward from the tray cleaning position to the water storage position. Is 5 to 10 seconds. Further, the time required for the upward tilt from the water storage position to the pre-ice making position is 20 to 30 seconds, and the time required for the upward tilt from the pre-ice making position to the ice making position is 5 to 10 seconds.

  As described above, when the water supply tray 12 and the water supply tank 13 are tilted upward from the tray cleaning position to the water storage position in the low speed operation state, the control unit 40 is surely recognized that the snap switch 44 is in the OFF state. be able to. Accordingly, the subsequent control of the tilting motor 35 and the electromagnetic valve 50 can be accurately performed without any variation. In addition, if the water supply tray 12 and the water supply tank 13 are tilted upward from the water storage position to the pre-ice-making position in a high-speed operation state, the cycle time required to complete the ice-making process is shortened and ice-making efficiency per unit time is improved. it can. Furthermore, since the water supply tray 12 and the water supply tank 13 are slowly raised and tilted again in the low speed operation state from the pre-ice-making position to the ice making position, the overrun of the water supply tray 12 and the water supply tank 13 due to the inertial force is eliminated. Thus, the timing at which the water supply tray 12 stops at the ice making position can be made constant. Therefore, the distance between the water supply tray 12 and the ice making case 10 can be kept constant, and ice blocks can be generated appropriately under certain ice making conditions. Further, when the drive arm 36 slowly tilts and moves from the pre-ice-making position to the ice-making position, the timing at which the snap switch 44 is switched from the off state to the on state is always constant, and the control of each device by the control unit 40 thereafter. Can be performed accurately.

  As described above, the tilting motor 35 is driven in a low-speed operation state or a high-speed operation state. The speed difference between the operation states is high-speed operation when the angular velocity at the lower end of the water supply tray 12 in the low-speed operation state is 1. The angular velocity of the state is 1-2. Note that the low-speed operation state and the high-speed operation state when the tilting motor 35 is reversely driven in the deicing process are the same as the low-speed operation state and the high-speed operation state when the tilting motor 35 is normally driven.

(Ice Removal Process) In the ice removal process, the controller 40 controls the operation state of the tilting motor 35 to switch the water supply tray 12 from the ice making position to the ice removing position, the pre-washing position, and the tray washing position. It is dropped from the cell 11 onto the water supply tray 12, and is further slid down to the ice making chamber 1 along the water supply tray 12 inclined downward. As shown in FIG. 5, the drive arm 36 in the ice making position has a latching arm 41 at the 12 o'clock position on the dial of the watch, and holds the water supply tray 12 and the water supply tank 13 in a horizontal position. The switch 44 is turned on. When the deicing process is started, first, hot gas is supplied from the compressor 4 to the heat exchange pipe 19 to heat the ice making case 10, thereby melting the adhering surface of the ice block adhering to the cell 11. . The supply of hot gas to the heat exchange pipe 19 is stopped after the water supply tray 12 is switched to the tray cleaning position.

  In the above state, when a drive signal is output from the control unit 40 to the tilting motor 35 and the motor 35 is reversely driven in the low speed operation state, the drive arm 36 receives the driving force of the tilting motor 35 and rotates counterclockwise. Tilt. As the drive arm 36 tilts, the tension of the interlocking spring 39 decreases, so that the water supply tray 12 and the water supply tank 13 slowly tilt down to the de-icing position without any impact. At the deicing position, the tilting moment due to the weight of the water supply tray 12 and the water supply tank 13 and the tension of the interlocking spring 39 are balanced. At the same time that the water supply tray 12 and the water supply tank 13 are tilted downward to the deicing position, the tilting motor 35 is reversely driven in a high-speed operation state to tilt the water supply tray 12 and the water supply tank 13 downward to the pre-cleaning position. Meanwhile, ice blocks fall from the cell 11 and are received by the upper surface of the water supply tray 12, slide down along the inclined surface of the tray 12, and fall into the ice making chamber 1.

  When the water supply tray 12 is tilted downward to the pre-cleaning position, the tilting motor 35 is reversely driven in the low-speed operation state to slowly tilt the water supply tray 12 to the tray cleaning position. In the state of being tilted downward to the tray cleaning position, the cold ice making water that is not consumed in the ice making process and remains in the water supply tank 13 is discharged from the drain 31 to the drain pan 16. At the same time when the water supply tray 12 is tilted downward to the tray cleaning position, the electromagnetic valve 50 is opened to supply normal temperature cleaning water (tap water) to the water supply tray 12 and adhere to the upper surface of the water supply tray 12. The frost and the small ice pieces adhering to the drainage groove 26 and the return hole 27 are washed away while being melted with the washing water, and flowed down into the water supply tank 13. As described above, when the water supply tray 12 and the water supply tank 13 are slowly lowered and tilted from the pre-cleaning position toward the tray cleaning position, the water supply tray 12 and the water supply tank 13 are prevented from overrunning due to the inertia of the movement. Thus, the water supply tray 12 can be properly stopped at the tray cleaning position. Further, the timing at which the snap switch 44 is switched to the OFF state is made constant to improve detection accuracy, and the control unit 40 can clearly determine that the water supply tray 12 and the water supply tank 13 are located at the tray cleaning position.

  A part of the washing water flows down from the return hole 27 into the water supply tank 13, and the washing water that has reached the inclined lower end of the water supply tray 12 flows down from the tray end into the water supply tank 13, and is cold as described above. It is discharged from the drainage basin 31 to the drain pan 16 together with the ice making water. Thereafter, the ice making process and the ice removing process are repeated to increase the amount of cube-shaped ice blocks stored in the ice making chamber 1, but when the amount of cube-shaped ice blocks stored in the ice making chamber 1 reaches a predetermined amount, This is detected by a sensor (not shown) and the ice making machine is held in the standby mode.

  In the deicing step, the total time required for the water supply tray 12 and the water tank 13 to tilt downward from the ice making position to the tray cleaning position is about 40 to 50 seconds, and the water tray 12 and water tank 13 are tilted downward from the ice making position to the ice releasing position. The time required for 5 to 15 seconds. The time required to tilt downward from the pre-cleaning position to the tray cleaning position is 5 to 15 seconds.

  As described above, in the first embodiment, the water supply tray 12 and the water supply tank 13 are slowly lowered and tilted from the ice making position to the ice removing position in the low speed operation state. According to such an ice making machine, as shown in FIG. 8, even if the frosted portion 53 that has grown inside the drainage groove 26 and the return hole 27 is formed on the lower surface of the ice block, the drainage groove 26 and the return hole 27 are formed. Since separation can be performed while slowly moving downward with respect to the icing portion 53, it is possible to eliminate that the icing portion 53 breaks from the ice block and remains in the drain groove 26 or the return hole 27. In addition, by eliminating the cracked icy portion 53 remaining in the drainage groove 26 and the return hole 27, the strong washing water formed by the residual ice rushes vigorously from the inclined lower end of the water supply tray 12. It is possible to eliminate the outflow and flow down to the ice making chamber 1, thereby eliminating the binding of ice blocks in the ice making chamber 1. Further, since the water supply tray 12 and the water supply tank 13 are tilted downward from the deicing position to the tray cleaning position in a high speed operation state, the cycle time required to complete the deicing process is shortened, and the ice making efficiency per unit time Can be improved.

  In the low-speed operation state and the high-speed operation state in the above embodiment, the tilt motor 35 is driven in the following several drive modes. One of them is a mode (stepless increase) in which the rotational speed of the tilting motor 35 is gradually increased to reach the target driving rotational speed until the predetermined driving time elapses after the tilting motor 35 is activated. Speed mode), which is a drive mode mainly applied during low-speed operation. The other one is a mode in which the tilting motor 35 is driven at the target drive speed until the predetermined drive time elapses after the speed is rapidly increased to the target drive speed (step speed increasing mode). The drive mode is mainly applied during high-speed operation, but may be applied during low-speed operation if necessary. The other is that after the tilting motor 35 is activated and reaches a predetermined driving speed, the driving speed of the tilting motor 35 is gradually decreased to a target driving speed until a predetermined driving time elapses. It is a mode for decelerating (stepless deceleration mode), and is a drive mode mainly applied during low-speed operation.

  In the deicing process, when the water supply tray 12 and the water supply tank 13 are slowly lowered and tilted from the ice making position to the ice removing position, the tilt motor 35 is driven in a low-speed operation state. At this time, the tilt motor 35 is driven. The mode is preferably set to the stepless acceleration mode. When the tilting motor 35 is driven in the stepless speed increasing mode, the lowering speed when the water supply tray 12 starts to tilt downward can be reduced. Further, the drainage groove 26 and the return hole are avoided by the impact of the shearing force acting on the boundary surface between the drainage groove 26 and the return hole 27 and the icing portion 53 by the amount that the lowering speed of the water supply tray 12 is small. 27 can be completely removed from the icing portion 53. Furthermore, since the descending speed of the water supply tray 12 gradually increases after the icing portion 53 is separated from the drainage groove 26 and the return hole 27, it is possible to prevent the cycle time required for the deicing process from increasing unnecessarily.

  In the deicing step, when the water supply tray 12 and the water supply tank 13 are quickly lowered and tilted from the ice removal position to the tray cleaning position, the tilting motor 35 is driven in a high-speed operation state. At this time, the tilting motor 35 is driven. It is preferable that the mode is set to a stepped acceleration mode. When the tilting motor 35 is driven in the step-up mode, the snap switch 44 is turned off by the switch arm 45 after the water tray 12 is tilted downward at a constant speed after the water tray 12 reaches the predetermined speed. Operated to stop the tilting motor 35. Therefore, the motion inertia force when the water supply tray 12 tilts downward is solved unnecessarily, the water tray 12 is prevented from overrun, and the stop position of the water supply tray 12 varies at the tray cleaning position. Can be prevented.

  In the ice making process, when the water supply tray 12 is tilted upward from the tray cleaning position to the water storage position, it is preferable to set the driving mode of the tilting motor 35 to the stepless speed increasing mode and drive in the low speed operation state.

  In the ice making process, when the water supply tray 12 is lifted and tilted from the water storage position to the pre-ice position, it is preferable to set the drive mode of the tilting motor 35 to the stepped speed increasing mode and drive in the high speed operation state. When the tilting motor 35 is driven in the step-up speed increasing mode, the electromagnetic valve 50 is opened and ice-making water starts to be supplied to the water supply tank 13, and at the same time, the water supply tray 12 and the water supply tank 13 can be quickly tilted upward. . In other words, the water supply tray 12 and the water supply tank 13 can be tilted upward before a sufficient amount of ice making water is stored in the water supply tank 13, so that the driving load of the tilt motor 35 can be reduced.

  In the ice making process, when the water supply tray 12 is lifted and tilted from the pre-ice position to the ice making position, it is preferable to set the drive mode of the tilt motor 35 to the stepless deceleration mode and drive in the low speed operation state. When the tilting motor 35 is driven in the stepless deceleration mode, the water supply tray 12 and the water supply tank 13 can be tilted upward while gradually decelerating. Therefore, the water supply tray 12 is always stopped at an appropriate ice making position, and the water supply tray 12 and the ice making are made. The facing interval of the case 10 can be optimized. Therefore, ice blocks can be properly generated under certain ice making conditions. In particular, the distance between the upper surface of the tray and the ice making case 10 that is located on the tilting lower end side of the water supply tray 12 may vary greatly due to slight variations when the water supply tray 12 stops at the ice making position. The ice block can be generated properly by eliminating the variation.

(Example 2) FIGS. 9 and 10 show Example 2 of an ice making machine in which the switch structure is changed. There, two switch cams 55 and 56 that reciprocate in conjunction with the tilting operation of the drive arm 36 were fixed to the drive shaft 38. Further, normally open first and second micro switches (first and second switches) 57 and 58 that are switched by the switch cams 55 and 56 are provided corresponding to the switch cams 55 and 56, respectively. I did it. The switch cams 55 and 56 are fixed so as to be adjacent to the drive shaft 38 in the central axis direction, and the first and second micro switches 57 and 58 are also fixed to the switch case 59 while being shifted back and forth. It is. On the peripheral surfaces of the switch cams 55 and 56, hook-shaped operation cam pieces 60 and 61 are provided so as to project the actuator buttons 57a and 60a of the first and second micro switches 57 and 58, respectively. By pushing 58a through the passive springs 57b and 58b, the microswitches 57 and 58 can be switched on.

  In FIG. 9, when the water supply tray 12 and the water supply tank 13 are tilted upward from the tray cleaning position to the ice making position, the switch cam 55 on the back side (rear side) toward the paper surface is the first micro switch (first switch) 57. This shows a state in which is turned on. The second micro switch (second switch) 58 on the near side (front side) toward the paper surface is in an off state. When the drive shaft 38 is tilted counterclockwise as indicated by the arrow from this state, the water supply tray 12 and the water supply tank 13 are tilted downward from the ice making position to the tray cleaning position, and the front side (front side) toward the paper surface. The switch cam 56 rotates to the position indicated by the imaginary line, and the second micro switch 58 is switched to the on state. In this state, the first micro switch 57 on the back side (rear side) toward the paper surface is turned off. As described above, the first switch 57 and the second switch 58 are respectively switches corresponding to a state where the water supply tray 12 is switched from the tray cleaning position to the ice making position and a state where the water supply tray 12 is switched from the ice making position to the tray cleaning position. Switching operation is performed by the cams 55 and 56, and an ON signal is output.

  In the deicing process, as shown in FIG. 10, the operation state of the tilt motor 35 is controlled by the control unit 40, and the water supply tray 12 is switched from the ice making position to the deicing position, the pre-cleaning position, and the tray cleaning position. Then, the ice block is dropped from the cell 11 onto the water supply tray 12. The downward tilting operation of the water supply tray 12 and the water supply tank 13 from the ice making position to the ice removing position is the same as that of the first embodiment. At the same time when the water supply tray 12 and the water supply tank 13 are tilted downward to the deicing position, the tilting motor 35 is reversely driven in a high-speed operation state, and the water supply tray 12 and the water supply tank 13 are tilted downward to the pre-washing position, so From the first to the tray cleaning position, the tilting motor 35 is reversely driven in the low-speed operation state, and the water supply tray 12 and the water supply tank 13 are slowly tilted downward toward the tray cleaning position as in the first embodiment. Since others are the same as those in the first embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted. The same applies to the following embodiments.

  As described above, when the water supply tray 12 and the water supply tank 13 are slowly lowered and tilted from the pre-cleaning position toward the tray cleaning position, the water supply tray 12 and the water supply tank 13 are prevented from overrunning due to the inertia of the movement. Thus, the water supply tray 12 can be properly stopped at the tray cleaning position. Further, the timing at which the second micro switch 58 switches to the ON state is made constant, and the control unit 40 can clearly determine that the water supply tray 12 and the water supply tank 13 are located at the tray cleaning position.

  As described above, when the ON signal is output from the first micro switch 57 and the second micro switch 58 is in the OFF state, the control unit 40 in the second embodiment tilts the water supply tray 12 and the water supply tank 13 up to the ice making position. It is determined that When the ON signal is output from the second micro switch 58 and the first micro switch 57 is in the OFF state, it is determined that the water supply tray 12 and the water supply tank 13 are tilted downward to the tray cleaning position. In this way, the fact that the water supply tray 12 has been switched to the ice making position and the tray cleaning position has been switched by the ON signal output from the first switch 57 and the ON signal output from the second switch 58. When the determination is made by the control unit 40, the tray cleaning position and the ice making position can be more clearly determined by the control unit 40 based on the ON signals output from the micro switches 57 and 58. Further, the control unit 40 can clearly determine that the first and second micro switches 57 and 58 are switched from the on state to the off state.

  Further, since the first and second micro switches 57 and 58 are turned on by the switch cams 55 and 56 having a small turning radius fixed to the drive shaft 38, the timing at which the micro switches 57 and 58 are turned on. The variation of the can be reduced. Therefore, it is possible to reduce the variation in position when the water supply tray 12 and the water supply tank 13 stop at the tray cleaning position or the ice making position, and ice making can always be performed under appropriate ice making conditions. Incidentally, when the snap switch 44 is switched between the on state and the off state by the latch arm 41 and the switch arm 45, the snap switch 44 is in the on or off state because the rotational radius and peripheral speed of both arms 41 and 45 are large. The timing of switching to is likely to vary. Therefore, it is inevitable that the water supply tray 12 and the water supply tank 13 vary when the tray is stopped at the tray cleaning position or the ice making position, and the ice making conditions vary. The first micro switch 57 in the on state is switched to the off state in the process in which the water supply tray 12 and the water supply tank 13 are tilted downward from the ice making position to the ice removing position. The second micro switch 58 in the on state is switched to the off state in the process in which the water supply tray 12 and the water supply tank 13 are tilted upward from the tray cleaning position to the water storage position.

(Example 3) FIG. 11 shows Example 3 of an ice making machine in which the switch structure is further changed. In this case, two switch cams 55 and 56 are fixed to the drive shaft 38 in the same manner as in the second embodiment, and the normally open first and second microswitches (switches) corresponding to the switch cams 55 and 56, respectively. 57 and 58 were fixed to the facing wall of the switch case 59. The switch cams 55 and 56 are fixed so as to be adjacent to the drive shaft 38 in the central axis direction, and the first and second micro switches 57 and 58 are also fixed to the switch case 59 while being shifted back and forth. It is.

  In FIG. 11, when the water supply tray 12 and the water supply tank 13 are tilted upward from the tray cleaning position to the ice making position, the switch cam 55 on the back side (rear side) toward the paper surface turns on the first micro switch 57. It shows the state. The second micro switch 58 on the front side (front side) toward the paper surface is in an OFF state. When the drive shaft 38 is tilted counterclockwise as indicated by the arrow from this state, the water supply tray 12 and the water supply tank 13 are tilted downward from the ice making position to the tray cleaning position, and the front side (front side) toward the paper surface. The switch cam 56 rotates to the position indicated by the imaginary line, and the second micro switch 58 is switched to the on state. In this state, the first micro switch 57 on the back side (rear side) toward the paper surface is turned off. In the deicing step, the operating state of the tilt motor 35 is controlled by the control unit 40 in the same manner as in the second embodiment, and the water supply tray 12 is deiced from the ice making position, the pre-cleaning position, and the tray cleaning position. The ice block is dropped from the cell 11 onto the water supply tray 12. Also, from the pre-cleaning position to the tray cleaning position, as in the second embodiment, the tilting motor 35 is reversely driven in the low speed operation state, and the water supply tray 12 and the water supply tank 13 are slowly lowered toward the tray cleaning position. Tilt.

  According to the switch structure of the third embodiment, similarly to the switch structure of the second embodiment, the water supply tray 12 is moved to the ice making position by the ON signal output from the first switch 57 and the ON signal output from the second switch 58. Or it can determine with the control part 40 having switched to the tray washing position. Therefore, the tray cleaning position and the ice making position can be determined more clearly by the control unit 40 based on the ON signals output from the micro switches 57 and 58. Further, since the first and second micro switches 57 and 58 are turned on by the switch cams 55 and 56 having a small turning radius fixed to the drive shaft 38, the timing at which the micro switches 57 and 58 are turned on. The variation of the can be reduced. Therefore, similarly to the switch structure of the second embodiment, the position variation when the water supply tray 12 and the water supply tank 13 stop at the tray cleaning position or the ice making position is reduced, and ice making can always be performed under proper ice making conditions. .

  In addition to the above, the tilting motor 35 does not have to be a DC motor, and any type can be used as long as it is a motor capable of forward / reverse driving and variable speed driving. With respect to the drive direction of the tilt motor 35, the forward rotation drive may be either the clockwise rotation direction or the counterclockwise rotation direction as long as the drive direction of the tilt motor 35 is aligned with the vertical tilt operation of the water supply tray 12. . Further, the driving direction of the tilting motor 35 at the time of reverse rotation driving is opposite to that at the time of normal driving. Note that the water supply tray 12 and the water supply tank 13 may be moved downward by simply driving the tilting motor 35 in a high-speed operation state between the ice removal position and the tray cleaning position.

DESCRIPTION OF SYMBOLS 1 Ice making room 3 Ice making unit 10 Ice making case 11 Cell 12 Water supply tray 13 Water supply tank 14 Tray operation mechanism 15 Water supply part 19 Heat exchange pipe 23 Nozzle hole 26 Drainage groove 27 Return hole 35 Tilt motor 36/37 Drive arm 39 Interlocking spring 40 Control 48 water supply pipe 53

Claims (6)

A cell-type ice making machine that generates ice blocks by alternately performing an ice making process and an ice removing process,
An ice making case (10) provided with a group of cells (11) in the upper part of the ice making chamber (1), a water supply tray (12) for supplying ice making water to each cell (11), and a water supply tank (13) A tray operation mechanism (14) for vertically tilting the water supply tray (12) and the water supply tank (13) between the tray cleaning position and the ice making position is provided.
The tray operation mechanism (14) includes a tilt motor (35) capable of forward / reverse drive and variable speed drive, a drive arm (36/37) tilted by the tilt motor (35), and a water supply tray (12). An interlocking spring (39) disposed between the arms (36, 37) and a control unit (40) for controlling the operating state of the tilting motor (35);
In the deicing step, the drive state of the tilt motor (35) is controlled by the drive command signal output from the control unit (40), and the water supply tray (12) and the water supply tank (13) are moved from the ice making position to the ice removing position. And tilt down to the tray cleaning position,
When the de-icing position is reached, the tilting motor (35) is driven in a high-speed operation state, and the water supply tray (12) and the water tank (13) are quickly lowered and tilted.
Between the ice-making position and the ice-breaking position, the tilting motor (35) is driven in a low-speed operation state, and the water supply tray (12) and the water supply tank (13) are slowly lowered and tilted. Machine. In the ice making process, the drive state of the tilt motor (35) is controlled by the drive command signal output from the control unit (40), and the water supply tray (12) and the water supply tank (13) are changed from the tray cleaning position to the water storage position. It is tilted upward to the ice making position and the ice making position,
Between the water storage position and the pre-ice-making position, the tilting motor (35) is driven in a high speed operation state, and the water supply tray (12) and the water supply tank (13) are quickly raised and tilted.
The cell-type cell according to claim 1, wherein the tilting motor (35) is driven in a low speed operation state to slowly tilt the water supply tray (12) and the water supply tank (13) between the pre-ice-making position and the ice-making position. Ice machine. During the deicing process, the tilting motor (35) in which the drive mode is set to the stepless acceleration mode is operated at a low speed while the feed tray (12) and the feed tank (13) are tilted downward from the ice making position to the deicing position. Driving in the state,
3. The tilt motor (35) whose drive mode is set to the step-up mode is driven in a high-speed operation state when the water supply tray (12) and the water supply tank (13) reach the deicing position. Cell-type ice machine. In the ice making process, while the water supply tray (12) and the water supply tank (13) are lifted and tilted from the water storage position to the pre-ice making position, the tilt motor (35) whose drive mode is set to the step-acceleration mode is operated at high speed. Driving,
The tilting motor (35) whose drive mode is set to the stepless deceleration mode is driven in a low-speed operation state while the water supply tray (12) and the water supply tank (13) are tilted upward from the pre-ice-making position to the ice-making position. The cell type ice making machine according to any one of 1 to 3. The tray operating mechanism (14) is switched between a pair of switch cams (55, 56) that reciprocally rotate in conjunction with the tilting operation of the drive arm (36), and each switch cam (55, 56). A switch (57) and a second switch (58) are provided,
The pair of switch cams (55, 56) is fixed to the drive shaft (38),
The first switch (57) and the second switch (58) correspond to a state where the water supply tray (12) is switched from the tray cleaning position to the ice making position and a state where the water supply tray (12) is switched from the ice making position to the tray cleaning position, respectively. The switch cam (55/56) is switched so as to output an ON signal.
The water supply tray (12) is switched to the ice making position by one of the ON signals output from the first switch (57) and the second switch (58) and the ON signal output from the other; The cell type ice making machine according to any one of claims 1 to 4, wherein the control section (40) determines that the water supply tray (12) has been switched to the tray cleaning position. Above the water supply tray (12), a water supply unit (15) for supplying ice-making water and tray washing water to the water supply tray (12) and the water supply tank (13) is provided,
The water supply section (15) includes a water supply pipe (48) disposed above the water supply tray (12), a raw water passage (49) communicating with the water supply pipe (48), and an electromagnetic valve ( 50),
In the ice making process, in a state where the water supply tray (12) and the water supply tank (13) are tilted upward from the tray cleaning position to the water storage position, the electromagnetic valve (50) is opened to supply ice making water to the water supply tray (12) and the water supply tank. (13)
The electromagnetic valve (50) is closed to stop the supply of ice making water while the water supply tray (12) and the water supply tank (13) are tilted upward from the ice making pre-stage position to the ice making position. A cell type ice making machine as described in one of the above.

Images