JP2002090012A - Automatic ice maker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic ice maker capable of stopping ice making operation by detecting a failure of an ice storage detection sensor without damaging an ice making unit or an ice storage tank. SOLUTION: An abnormality detecting sensor 18 is provided at a position opposite to an ice introduction port 6a on the ice storage detection sensor 17 in the ice storage tank 6. In the case that the ice storage sensor 17 does not work even if ice is stored to a first set quantity in the ice storage tank 6 due to the failure of the sensor 17, the abnormality detection sensor 18 functions when the ice is stored to a second set quantity exceeding the first set quantity, a control circuit 19 makes a judgment that the sensor 17 has failed, and operations of a refrigeration circuit and a geared motor are stopped to stop ice making operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic ice maker provided with an ice storage.

[0002]

2. Description of the Related Art FIG. 8 shows a configuration of a conventional auger type ice making machine 10. As shown in FIG. An auger provided with a spiral blade (not shown) is provided inside the freezing casing 1 made of a cylindrical member. The auger is connected to a geared motor (GM) 2 via a speed reducer (not shown) at the lower end of the freezing casing 1. Further, a cooling pipe (not shown) is wound around the outer periphery of the auger in the freezing casing 1 as an evaporator, and a condenser, a compressor, and the like are connected to the cooling pipe to form a refrigeration circuit.

[0003] A water supply pipe 3 is provided below the freezing casing 1 to supply ice making water into the freezing casing 1. A pressing head 4 is formed at an upper portion of the freezing casing 1 and is connected to an ice transport pipe 5. Here, the geared motor 2, the freezing casing 1, the pressing head 4, and the ice transport pipe 5
The ice making unit of the auger type ice making machine 10 is configured. The ice transport pipe 5 is connected and fixed to the ice storage 6 by a fixing bolt (not shown). An abnormality detection sensor 8 is provided on an outer peripheral portion of the ice transport pipe 5. The ice storage 6 is formed of an ABS resin material, and has an ice storage detection sensor 7 for detecting that ice has been stored to a predetermined amount.
A water supply pipe 3 is provided at a lower portion of the freezing casing 1 and supplies ice making water into the freezing casing 1. Further, a control circuit 9 for controlling the ice making operation in the ice making section is provided below the freezing casing 1, and is electrically connected to the refrigeration circuit, the geared motor 2, the ice storage detection sensor 7, and the abnormality detection sensor 8.

When the refrigeration circuit and the geared motor 2 operate to start the ice making operation, ice 11 is generated from the ice making water supplied from the water supply pipe 3 in the refrigeration casing 1. After the generated ice is scraped off by the auger, it is transferred toward the pressing head 4. The ice is compressed by the pressing head 4, and the compressed ice 11 is sent to the ice storage 6 through the ice transport pipe 5. When the ice 11 introduced from the ice inlet 6a is stored in the ice storage 6 to a predetermined amount, the ice storage detection sensor 7 operates. The signal of the ice storage detection sensor 7 is input to the control circuit 9,
The control circuit 9 stops the operation of the refrigeration circuit and the geared motor 2 and temporarily stops the ice making operation. When the ice 11 in the ice storage 6 is used and the ice 11 in the ice storage 6 decreases below a predetermined amount, the ice storage detection sensor 7 does not operate, and the control circuit 9 restarts the ice making operation.

Here, if the ice storage detecting sensor 7 fails and cannot detect that the ice 11 has been stored to the predetermined amount, the ice making section will not remove the ice 11 even if the ice 11 stored in the ice storage 6 exceeds the predetermined amount. The ice storage 6 and the ice transport pipe 5
Is filled with ice 11. Since the geared motor 2 tries to push new ice generated in the freezing casing 1 further from the pressing head 4 toward the ice transport pipe 5, the reaction force of the load for pushing the ice is reduced by the ice transport. The load is applied to the ice making section such as the tube 5 in the direction of the arrow in the figure, and this load causes the ice making section to vibrate. At this time, the abnormality detection sensor 8 operates by detecting this reaction force, and the signal of the abnormality detection sensor 8 is transmitted to the control circuit 9.
Is input, the control circuit 9 stops the ice making operation in order to avoid applying an abnormal load to the ice making part.

[0006]

However, if the ice storage detection sensor 7 fails, the above-described abnormality detection sensor 8
Detects the failure of the ice storage detection sensor 7 by the
When the ice making operation is stopped, a certain amount of load is applied to the ice making part, and a load is also applied to the ice storage 6 connected and fixed to the ice making part. For this reason, the inner wall surface of the ice storage 6 made of ABS resin material is damaged, the spout 5a serving as an ice discharge port of the ice transport pipe 5 is cracked, and
There is a problem that the fixing bolt for connecting and fixing the ice transport pipe 5 and the ice storage 6 is deformed.

Therefore, the present invention has been made to solve such a problem, and it is possible to stop an ice making operation by detecting an abnormality of an ice storage detecting sensor without damaging an ice making part or an ice storage. It is an object of the present invention to provide an automatic ice maker capable of performing the above.

[0008]

An automatic ice maker according to the present invention is an automatic ice maker provided with an ice storage, wherein a first set amount of ice is stored in the ice storage while being provided in the ice storage. An ice storage detecting means for detecting that the ice is stored in the ice storage, and an abnormality detecting means for detecting that a second set amount of ice exceeding the first set amount is stored in the ice storage, and an ice storage detection And a control circuit for stopping the ice making operation based on a signal from the means and the abnormality detecting means. In addition, an ice inlet for introducing the generated ice into the ice storage can be provided in the ice storage, and the abnormality detecting means can be provided so as to be located on the side opposite to the ice inlet with respect to the ice storage detecting means. Further, when the ice storage detecting means detects that the first set amount of ice has been stored in the ice storage, the control circuit determines that the ice storage amount has reached a desired amount, stops the ice making operation, and detects the ice storage. When the means does not detect that the first set amount of ice has been stored in the ice storage and the abnormality detecting means detects that the second set amount of ice has been stored, it is determined to be abnormal. Alternatively, the ice making operation can be stopped. Further, the ice storage detecting means and the abnormality detecting means may include one actuator commonly used for each other, and may detect the movement by movement of the actuator. Further, the actuator may be rotatably supported, and the automatic ice maker may include an actuator guard having a surface along a rotation path of the actuator.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Embodiment 1 FIG. FIG. 1 shows a configuration of an auger type ice maker 20, which is an automatic ice maker according to Embodiment 1 of the present invention. An auger provided with a spiral blade (not shown) is provided inside the freezing casing 1 made of a cylindrical member. The auger is connected to a geared motor (GM) 2 via a speed reducer (not shown) at the lower end of the freezing casing 1. Furthermore, on the outer periphery of the auger in the freezing casing 1,
As an evaporator, a cooling pipe (not shown) is wound, and a condenser, a compressor, and the like are connected to the cooling pipe to form a refrigeration circuit. A water supply pipe 3 is provided at a lower portion of the freezing casing 1 and supplies ice making water into the freezing casing 1. A pressing head 4 is formed at an upper portion of the freezing casing 1 and is connected to an ice transport pipe 5. Here, the geared motor 2, the freezing casing 1, the pressing head 4, and the ice transport pipe 5
The ice making section of the auger type ice making machine 20 is constituted.

The ice transport pipe 5 is connected and fixed to the ice storage 6 by fixing bolts (not shown). The ice storage 6 is formed of an ABS resin material, and has an ice inlet 6a for introducing ice discharged from the ice transport pipe 5 into the inside. In addition, an ice storage detecting sensor 17 which is an ice storage detecting means composed of a magnetic proximity switch is provided in an upper part in the ice storage 6. A rod-shaped actuator 1 rotatably mounted on one end of the ice storage detection sensor 17 as a fulcrum.
2 are connected. When the ice gradually stored in the ice storage 6 comes into contact with the actuator 12 and the actuator 12 rotates counterclockwise, the ice storage detection sensor 1
7 operates. That is, the ice storage detection sensor 17 is configured to operate by detecting that ice has been stored in the ice storage 6 up to the first predetermined amount. Further, in the ice storage 6, an abnormality detection sensor 18 as abnormality detection means is provided at a position opposite to the ice inlet 6 a with respect to the ice storage detection sensor 17. The abnormality detection sensor 18 is configured by a magnetic proximity switch having the same structure as the ice storage detection sensor 17. The abnormality detection sensor 18 is connected to a rod-shaped actuator 13 rotatably mounted with one end thereof as a fulcrum. When ice is almost completely stored in the ice storage 6, the ice contacts the actuator 13 and the actuator 13 rotates counterclockwise, so that the abnormality detection sensor 18 operates. The abnormality detection sensor 18 is configured to operate by detecting that a second set amount of ice exceeding the first set amount has been stored in the ice storage 6. A water supply pipe 3 is provided at a lower portion of the freezing casing 1 and supplies ice making water into the freezing casing 1. Further, a control circuit 19 for controlling the ice making operation in the ice making section is provided below the freezing casing 1, and is electrically connected to the refrigeration circuit, the geared motor 2, the ice storage detection sensor 17, and the abnormality detection sensor 18.

Next, an auger type ice making machine 2 according to an embodiment
The operation of 0 will be described. When the refrigeration circuit and the geared motor 2 operate to start the ice making operation, ice 11 is generated from the ice making water supplied from the water supply pipe 3 in the refrigeration casing 1. After the generated ice 11 is scraped off by the auger, it is transferred toward the pressing head 4. Ice 11 at pressure head 4
Is compressed, and the compressed ice 11 is sent to the ice storage 6 through the ice transport pipe 5. Ice 1 introduced from ice inlet 6a
When 1 is stored in the ice storage 6 up to the first set amount, the ice storage detection sensor 17 operates. The signal from the ice storage detection sensor 17 is input to the control circuit 19, and the control circuit 19 stops the operation of the refrigeration circuit and the geared motor 2, and temporarily stops the ice making operation. When the ice 11 in the ice storage 6 is used and the ice 11 in the ice storage 6 decreases below the first set amount, the ice storage detection sensor 17 stops operating, and the control circuit 19 restarts the ice making operation.

Here, as shown in FIG. 2, if the ice storage detection sensor 17 fails and does not operate even if the ice 11 is stored in the ice storage 6 up to the first set amount, the control circuit 19 is activated.
Does not stop the ice making operation, but controls so as to continue generating ice 11. However, when the ice 11 in the ice storage 6 exceeds the first set amount and is stored up to the second set amount,
The abnormality detection sensor 18 operates, and a signal from the abnormality detection sensor 18 is input to the control circuit 19. If the ice storage detection sensor 17 does not detect that the first set amount of ice 11 has been stored in the ice storage and the abnormality detection sensor 18 detects that the second set amount of ice 11 has been stored, The circuit 19 determines that the ice storage detection sensor 17 has failed, stops the operation of the refrigeration circuit and the geared motor 2, and stops the ice making operation.
Even when the ice 11 stored is removed and becomes smaller than the second set amount and the abnormality detection sensor 18 does not operate, the control circuit 19 does not restart the ice making operation, and a manual reset switch (not shown) is activated. The ice making operation is restarted only after the operation.

As described above, even if the ice storage detecting sensor 17 fails, the ice making operation is stopped before the ice storage 6 is filled with the ice 11 by the operation of the abnormality detecting sensor 18, so that the geared motor 2 is operated. The reaction force of the load for pushing the ice 11 to the ice transport pipe 5 is not applied as a load to the ice making section and the ice storage 6, and the ice making section does not vibrate.
For this reason, the inner wall surface of the ice storage 6 made of the ABS resin material may be damaged, or the spout 5 a serving as the ice discharge port of the ice transport pipe 5 may be damaged.
And the fixing bolt for connecting and fixing the ice transport pipe 5 and the ice storage 6 is not deformed.

Embodiment 2 FIG. FIG. 3 shows a configuration of an auger type ice maker 30 which is an automatic ice maker according to Embodiment 2 of the present invention. The configuration of the auger ice maker 30 is different from that of the auger ice maker 10 of the first embodiment shown in FIG. 1 in that a forced ice storage mode switch 21 is added and a control circuit 29 is replaced with a control circuit 29 instead of the control circuit 19. An abnormality detection sensor 28 is provided instead of the detection sensor 18, and the abnormality detection sensor 28
Is controlled by the control circuit 29 so that the sensor is also used as a sensor used for judging abnormality of the auger ice making machine and changing the ice storage amount. The forced ice storage mode switch 21 is an on / off switch, and is connected to the control circuit 29. The control circuit 29 is configured to determine the forced ice storage mode when the signal of the forced ice storage mode switch 21 is on, and to determine the normal mode when the signal is off, and to control the auger ice maker 30 according to each mode. .

In the normal mode, an abnormality is detected in the same manner as the abnormality detection sensor 18 of the first embodiment. That is,
Even if the ice in the ice storage 6 exceeds the first set amount and is stored up to the second set amount, if the ice storage detection sensor 17 does not operate and the abnormal ice storage detection sensor 28 operates, the control circuit 19
At the same time, it is determined that the ice storage detection sensor 17 has failed, and the operation of the refrigeration circuit and the geared motor 2 is stopped, and the ice making operation is stopped. On the other hand, in the forced ice storage mode, the control circuit 19 does not stop the ice making operation even if the ice in the ice storage 6 is stored up to the first set amount and the ice storage detection sensor 17 operates. When the ice is stored above the first set amount to the second set amount,
When the abnormality detection sensor 28 operates, the control circuit 19 stops the operation of the refrigeration circuit and the geared motor 2 for the first time, and stops the ice making operation. Therefore, it is possible to provide an auger ice maker that can store more ice in the ice storage 6 than usual, and can cope with peak times when the amount of ice used is large. Further, in the forced ice storage mode, the ice storage detection sensor 17 does not operate and the abnormality detection sensor 28 operates, or the abnormality detection sensor 28 operates even after the ice storage detection sensor 17 has operated and a certain time has elapsed. If not, the control circuit 29
It is determined that the ice storage detection sensor 17 or the abnormality detection sensor 28 has failed, and the operation of the refrigeration circuit and the geared motor 2 is stopped to stop the ice making operation.

As described above, the forced ice storage mode switch 21
By switching the switch on and off, the ice making operation corresponding to the normal ice storage amount and the large-capacity ice storage amount at the peak time can be performed, and the abnormality of the ice storage detection sensor 17 similarly to the first embodiment. Can be detected.

In the embodiment described above, the first
And the arms 12 and 13 connected to the ice storage detection sensor 17 and the second ice storage detection sensors 18 and 28, respectively.
By changing the length of the ice, the set amount of ice in the ice bin on which these sensors operate can be changed.

Embodiment 3 FIG. 4 shows a configuration of an auger type ice maker 40 which is an automatic ice maker according to Embodiment 3 of the present invention. The configuration of the auger ice maker 40 is different from the auger ice maker 10 of the first embodiment shown in FIG. 1 in that an ice storage detection sensor 37 and an abnormality detection sensor 38 are used instead of the ice storage detection sensor 17 and the abnormality detection sensor 18. , An actuator 32 in place of the actuator 12 and the actuator 13, and a control circuit 39 in place of the control circuit 19.

An ice storage detection sensor 37 constituted by a magnetic proximity switch is provided in the upper part of the ice storage 6. An abnormality detection sensor 38 is provided at a position opposite to the ice inlet 6a with respect to the ice storage detection sensor 37. Abnormality detection sensor 3
Reference numeral 8 denotes a magnetic proximity switch having the same structure as the ice storage detection sensor 37. In the vicinity of the ice storage detection sensor 37, an actuator 32 having two arms 32b and 32c extending in opposite directions from the fulcrum 32a is provided rotatably about the fulcrum 32a. Arm 32
b and 32c have magnets 33b and 33c respectively.
c is embedded. The magnet 33b is arranged at a position facing the ice storage detection sensor 37 when the actuator 32 rotates and approaches the ice storage detection sensor 37. The magnet 33c is arranged at a position facing the abnormality detection sensor 38 when the actuator 32 rotates and approaches the abnormality detection sensor 38. Therefore, the ice storage detection sensor 37 and the abnormality detection sensor 38
The two actuators 32 are configured to be commonly used.

The amount of ice 11 in the ice storage 6 is small,
Is not in contact with the actuator 32, the actuator 32 is connected to the arm 32 as shown by a broken line in the figure.
b faces substantially upward, and the magnet 33b approaches the ice storage detection sensor 37, whereby the ice storage detection sensor 37 is turned on. In this state, the ice storage detection sensor 3
The control circuit 39 does not detect that the ice 11 has been stored in the ice storage 6 up to a first set amount which is predetermined.
, The operation of the refrigeration circuit and the geared motor 2 is continued, and the ice making operation is continued. Ice 11 gradually stored in the ice storage 6
Comes into contact with the actuator 32 and the actuator 32
Rotates counterclockwise to move the magnet 33b away from the ice storage detection sensor 37, so that the ice storage detection sensor 37 is turned off. Thereby, the ice storage detection sensor 37
Upon detecting that the ice 11 has been stored to the first set amount in the ice storage 6, the control circuit 39 stops the operation of the refrigeration circuit and the geared motor 2, and the ice making operation is stopped.

Here, as shown in FIG. 5, if the ice storage detection sensor 37 fails in the ON state and it cannot be detected that the ice 11 has been stored to the first set amount in the ice storage 6, The control circuit 39 does not stop the ice making operation, and
1 is continuously generated. However, when the ice 11 in the ice storage 6 exceeds the first set amount and is stored up to the second set amount, the actuator 32 rotates counterclockwise, and the magnet 33 c approaches the abnormality detection sensor 38. , The abnormality detection sensor 38 is turned on. As a result, the abnormality detection sensor 38 detects that the ice 11 has been stored to the second set amount in the ice storage 6, and the control circuit 39 stops the operation of the refrigeration circuit and the geared motor 2 to make ice. Operation stops. Even when the ice 11 stored is removed and becomes smaller than the second set amount and the abnormality detection sensor 38 is turned off, the control circuit 39 does not restart the ice making operation, and a manual reset switch (not shown) is used. The ice making operation is resumed only after is operated.

As described above, similarly to the first embodiment, the abnormality of the ice storage detection sensor 37 can be detected, and the ice storage detection sensor 37 and the abnormality detection sensor 38 are operated by the single actuator 32. This eliminates the need for two actuators corresponding to the above, reduces the number of parts, and can reduce the cost. Since the ice storage detection sensor 37 and the abnormality detection sensor 38 are provided adjacent to each other, the work of replacing the ice storage detection sensor 37 and the abnormality detection sensor 38 is facilitated, and the serviceability is improved.

Incidentally, the actuator 32 may be rotated by an artificial operation irrespective of the amount of the ice 11, and the ice storage detection sensor 37 and the abnormality detection sensor 38 may malfunction. For example, while the ice making operation is stopped with the ice 11 being stored in the ice storage 6 to the first set amount,
While the ice making operation is continued in a state where the ice 11 is not stored up to the first set amount in the ice storage 6, the ice 11 in the ice storage 6 is
May be scooped with a scoop. At this time, the scoop touches the actuator 32, the actuator 32 rotates, and the ice storage detection sensor 37 and the abnormality detection sensor 38 may malfunction. In such a case, the control circuit 39
Makes the following determination to avoid the influence of the malfunction of the ice storage detection sensor 37 and the abnormality detection sensor 38 on the ice making operation. Regarding the malfunction of the ice storage detection sensor 37,
The control circuit 39 provides a delay time from when the ice storage detection sensor 37 is turned off to when the ice making operation is stopped, and stops the ice making operation if the off state does not continue for 7 seconds from the on state to the off state. Don't do it. Thereby, the control circuit 39 avoids the influence on the ice making operation due to the malfunction of the ice storage detection sensor 37. Abnormality detection sensor 3
8, the control circuit 39 provides a delay time from the time when the abnormality detection sensor 38 is turned on to the time when the ice making operation is stopped. If not continued, make sure that the ice making operation is not stopped. The control circuit 39 does not judge the state of the abnormality detection sensor 38 when the ice storage detection sensor 37 is off. Thereby, the control circuit 39
This avoids the influence of the malfunction of the abnormality detection sensor 38 on the ice making operation.

Embodiment 4 FIG. 6 shows a configuration of an auger-type ice maker 50 that is an automatic ice maker according to Embodiment 4 of the present invention. The configuration of the auger ice maker 50 is such that an actuator guard 41 is added to the auger ice maker 40 of the fourth embodiment shown in FIG.

An ice storage detection sensor 37, an abnormality detection sensor 38, and an actuator 32 are provided at an upper portion in the ice storage 6 along an extension of the ice discharge direction from the ice inlet 6a of the ice transport pipe 5. The actuator 32 includes two arms 32b, 32c extending in opposite directions from a fulcrum 32a.
And supported rotatably about a fulcrum 32a. Magnets 33b and 33c are embedded in the arms 32b and 32c, respectively. In addition, ice storage 6
The upper top plate 42 has an opening 41a on the extension of the ice discharge direction from the ice inlet 6a, and is provided with an actuator guard 41 fixed by a knob bolt (not shown).
Is provided. The actuator guard 41 has an arc-shaped strip-shaped curved surface 41a and two plate-shaped side surfaces 41b extending perpendicularly from both edges thereof. The two side surfaces 41b move from the position where the ice storage detection sensor 37 detects that the first set amount of ice has been stored, to the abnormality detection sensor 38.
Are formed on both sides of the arm 32c so as to form a surface along the movement trajectory of the arm 32c when the actuator 32 rotates about the fulcrum 32a up to a position where the second set amount of ice is detected. It is provided in. Therefore, as indicated by the broken line in the figure, the ice storage detection sensor 37
Does not detect that the first set amount of ice has been stored in the ice storage, the arm 32c does not enter the opening 41a of the actuator guard 41. Similarly, when the ice storage sensor 37 detects that the first set amount of ice has been stored, the abnormality detection sensor 38 detects that the second set amount of ice has been stored in the curved surface 41a. The tip 3 is formed so as to form a surface along the movement trajectory of the tip 32d of the arm 32c when the actuator 32 rotates about the fulcrum 32a up to a position where it is detected that
It is provided facing 2d.

As described above, the actuator guard 41
However, since it is provided so as to cover the rotating actuator 32, the ice 11 enters between the actuator 32 and the top plate 42, the actuator 32 cannot rotate, and the ice 11 in the ice storage 6 is Even if it is stored up to the set amount of 2, the arm 32c does not come close to the abnormality detection sensor 38, and the situation that the abnormality detection sensor 38 does not operate does not occur. Therefore, the abnormality detection sensor 38 can operate reliably if the ice 11 is stored up to the second set amount. Further, the arm 3 is provided inside the actuator guard 41.
As the height 2c rises, the ice 11 enters the actuator guard 41 and pushes up the arm 32c from below, so that the arm 32c reliably approaches the abnormality detection sensor 38 and the ice 11 in the ice storage 6 is piled up. Even if there is a variation in the process, the abnormality detection sensor 38 can reliably operate earlier. Furthermore, since the curved surface 41a of the actuator guard 41 is entirely inclined, the ice 11 in the ice storage 6 is used and the ice 1
When the amount of 1 becomes small, the actuator guard 4
The ice 11 does not stay in 1. Therefore, as indicated by the broken line in the figure, the actuator 32 can reliably return to the position where the ice storage detection sensor 37 has not detected that the first set amount of ice has been stored.

FIG. 7 shows a configuration of an auger type ice making machine 50 using a modified example of the actuator guard 41. The actuator guard 51 has a side surface 51b extending toward the ice inlet 6a with respect to the actuator guard 41, and a fulcrum 32a of the actuator 32 enters the opening 51a.

In the above embodiments, an auger-type ice maker has been described as an example. However, the present invention is not limited to an automatic ice maker, and is applicable to various types of automatic ice maker. it can.

[0029]

As described above, according to the automatic ice making machine of the present invention, the ice storage detecting means for detecting that the first set amount of ice has been stored in the ice storage, and the first set amount of ice. An abnormality detecting means for detecting that the second set amount of ice that has exceeded the second set amount is stored in the ice storage is provided in the ice storage, and the ice making operation is stopped based on signals from the ice storage detecting means and the abnormality detecting means. Therefore, the ice making operation can be stopped without damaging the ice making part or the ice storage. Further, since the abnormality detecting means is provided on the side opposite to the ice inlet with respect to the ice storage detecting means, the abnormality of the ice storage detecting means can be detected by the positional relationship between the ice storage detecting means and the abnormality detecting means. . Further, when the ice storage detecting means does not detect that the first set amount of ice is stored in the ice storage and the abnormality detecting means detects that the second set amount of ice is stored, If it is determined that there is an abnormality, the abnormality of the ice storage detecting means can be accurately detected. Further, since the ice storage detecting means and the abnormality detecting means are operated by one actuator commonly used, no two actuators corresponding to the respective sensors are required, the number of parts can be reduced, and the cost can be reduced. it can. Furthermore, since an actuator guard having a surface along the rotation locus of the actuator is provided, ice does not enter between the actuator and the top plate, and the abnormality detecting means can be reliably operated.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an auger ice maker according to Embodiment 1 of the present invention.

FIG. 2 is a diagram for explaining an operation of the auger-type ice maker according to Embodiment 1 of the present invention.

FIG. 3 is a diagram showing a configuration of an auger ice maker according to Embodiment 2 of the present invention.

FIG. 4 is a diagram showing a configuration of an auger-type ice maker according to Embodiment 3 of the present invention.

FIG. 5 is a diagram for explaining an operation of an auger-type ice maker according to Embodiment 3 of the present invention.

FIG. 6 is a diagram showing a configuration of an auger ice maker according to Embodiment 4 of the present invention.

FIG. 7 is a diagram showing a configuration of a modified example of the auger type ice making machine according to Embodiment 4 of the present invention.

FIG. 8 is a diagram showing a configuration of a conventional auger type ice making machine.

[Explanation of symbols]

6: ice storage, 6a: ice inlet, 11: ice, 17, 37,
... ice storage detection sensor, 18, 28, 38 ... abnormality detection sensor, 19, 29, 39 ... control circuit, 20, 30, 40,
50, 60 ... auger type ice machine, 32 ... actuator,
41, 51: Actuator guard.

Claims (5)

[Claims] 1. An automatic ice maker having an ice storage, an ice storage detecting means provided in the ice storage and detecting that a first set amount of ice has been stored in the ice storage. Abnormality detecting means for detecting that a second set amount of ice exceeding the first set amount has been stored in the ice storage; and ice making operation based on signals from the ice storage detecting means and the abnormality detecting means. An automatic ice maker comprising a control circuit for stopping the operation. 2. An ice inlet for introducing the generated ice into the ice storage is provided in the ice storage, and the abnormality detecting means is provided on the opposite side of the ice storage from the ice storage detecting means. The automatic ice maker according to claim 1, wherein 3. The control circuit, when the ice storage detecting means detects that a first set amount of ice has been stored in the ice storage, determines that the ice storage amount has reached a desired amount, and stops the ice making operation. If the ice storage detecting means does not detect that the first set amount of ice has been stored in the ice storage and the abnormality detecting means has detected that the second set amount of ice has been stored, it is determined to be abnormal. The automatic ice making machine according to claim 1 or 2, wherein the ice making operation is stopped upon determination. 4. The ice storage detecting means and the abnormality detecting means include one actuator commonly used for each other, and detect by movement of the actuator.
4. The automatic ice maker according to any one of claims 1 to 3. 5. The actuator is rotatably supported,
5. The automatic ice maker according to claim 4, further comprising an actuator guard having a surface along a rotation locus of the actuator.