JP4629811B2 - Ice machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ice making machine that stores ice generated by an ice making device in an ice storage.
[0002]
[Prior art]
Conventionally, in this type of ice making machine, as described in, for example, JP-A-6-257920, ice generated by an ice making device is stored in an ice storage, and the ice is taken out from the ice storage as needed and used. It is configured to be able to. In addition, the ice making operation by the ice making device is the value set in advance to stop the ice making operation by recognizing that the ice storage amount in the ice storage is the upper set value of the ice storage switch (the ice storage amount in the ice storage is full) ) When ice is stored, the ice storage switch is turned on and stopped. In addition, when the ice storage amount in the ice storage reaches a lower setting value (predetermined value as the ice storage amount to start the ice making operation) in which the ice storage amount in the ice storage is reduced by a certain amount from the upper setting value due to the removal of ice, The ice making operation is restarted after turning off, and the ice storage is always stored in the ice storage.
[0003]
However, the lower set value is due to the fact that the differential of the ice storage switch cannot be taken largely due to mechanical limitations, and is normally not significantly different from the upper set value, and the ice storage amount in the ice storage is empty. Compared to the case of, it was a considerably large value.
Moreover, in such an ice making machine, the ice storage amount in the ice storage is only detected by the upper and lower set values by the ice storage switch as described above, except for this, the ice storage amount in the ice storage is about It was not detected at all.
Therefore, the amount of ice stored in the ice storage was substantially not grasped.
[0004]
[Problems to be solved by the invention]
For this reason, if the ice is continuously used, it may suddenly disappear, and in this case, the user may be worried that it may be out of order because it suddenly stops. Also, in the case of a commercial ice maker, as long as the amount of ice stored can be grasped to some extent, the ice maker will be shut down early, taking into account the closing time, the number of customers at that time, and the expected number of customers thereafter. However, as described above, since the ice storage amount is virtually unknown as described above, in actual operation, the ice making operation until the store is closed regardless of the amount of ice remaining in the ice storage. Economic operation was not carried out without continuing. For this reason, there has been a demand for the development of an ice making machine that can grasp the amount of ice stored in the ice storage.
[0005]
The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide an ice making machine capable of calculating the ice storage amount in the ice storage in order to grasp the ice storage amount in the ice storage and to detect an abnormality in the ice making machine.
[0006]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, an ice making device that generates ice by cooling ice-making water with a cooling device, an ice storage that stores the generated ice, and an inside of the ice storage An ice storage switch that turns on when the ice storage amount reaches the upper set value and turns off when the ice storage amount reaches a lower set value that is a certain amount lower than the upper set value, and an ice making switch when the ice storage switch is turned on. An operation control device that stops operation and resumes ice making operation when the ice storage switch is turned off, and the ice storage is full each time the ice storage switch is turned on, and the predetermined ice corresponding to the upper set value is assumed. The ice storage amount in the ice storage is reset with the amount of ice as the full ice amount, and from the reset ice storage amount, the set discharge amount per unit time when ice is released is subtracted, and the set ice making amount per unit time during ice making operation Add By the ice storage amount calculation processing means that as to calculate the ice storage amount in the ice binFailure detection means for detecting an abnormality in which ice making is not performed when the ice storage amount calculated by the ice storage amount calculation processing means reaches an abnormal value exceeding the full ice amount value;It is characterized by comprising.
[0007]
  Therefore, according to claim 1Ogre typeIn the ice making machine, the amount of ice stored in the ice storage is grasped by the arithmetic processing means. Further, according to this failure detection means, the occurrence of a failure due to a wide range of reasons that ice is not stored in the ice storage, such as a failure of a refrigeration device, a failure of a water supply valve of an ice making water supply system, a failure of an auger drive device, or the like is detected. be able to.
[0008]
  According to a second aspect of the present invention, when the ice storage amount calculated by the ice storage amount calculation processing means reaches a low ice amount display value that is reduced by a predetermined amount from the full ice amount value, This is displayed. Therefore, according to claim 2Ogre typeIn an ice making machine, the amount of ice stored in the ice storage can be estimated using this low ice amount display as a guide. Therefore, the ice making machine can be operated systematically and economically by predicting the amount of use. In addition, user dissatisfaction due to the sudden disappearance of ice can be eliminated.
[0009]
  In the invention according to claim 4, the ice making device for generating ice by cooling the ice making water by the cooling device, the ice storage for storing the generated ice, and the ice storage amount in the ice storage reach the upper set value. An ice storage switch that is turned on when the ice storage amount reaches a lower set value that is a certain amount lower than the upper set value, and an ice making operation is stopped when the ice storage switch is turned on. The operation control device that resumes ice making operation when the ice is turned off, and that the ice storage is full each time the ice storage switch is turned on, and the ice storage is performed with the predetermined ice amount corresponding to the upper set value as the full ice amount value. The ice storage is reset by resetting the ice storage amount in the storage, subtracting the set release amount per unit time when ice is released from the reset ice storage amount, and adding the set ice production amount per unit time during ice making operation Saving in An ice storage amount calculation processing means for calculating the amount, an ice detector provided in the vicinity of the ice discharge opening of the ice storage for detecting the presence or absence of ice discharge, and a failure detection means for detecting an abnormality, The operation control device displays when the ice storage amount calculated by the ice storage amount calculation processing means reaches a low ice amount display value which is reduced by a predetermined amount from the full ice amount value, and the failure detection means When the operation control device does not display the low ice amount, an abnormality is detected by detecting no ice by the ice detector.
  Therefore, in the ice making machine according to the fourth aspect, the ice storage amount stored in the ice storage is grasped by the arithmetic processing means. In addition, the ice storage amount in the ice storage can be estimated using the low ice amount display as a guide. Therefore, the ice making machine can be operated systematically and economically by predicting the amount of use. In addition, user dissatisfaction due to the sudden disappearance of ice can be eliminated. Further, according to this failure detection means, the occurrence of a failure due to a wide range of reasons that ice is not stored in the ice storage, such as a failure of a refrigeration device, a failure of a water supply valve of an ice making water supply system, a failure of an auger drive device, or the like is detected. be able to.
  Also,According to a fifth aspect of the present invention, when the calculated ice storage amount in the ice storage exceeds the full ice amount value except when the ice storage switch is turned on, the ice storage amount is changed to the full ice amount value. When the correction is made, it is possible to eliminate the fact that the amount of ice storage per unit time added during the ice making operation is accumulated and the ice storage amount is calculated larger than the actual amount.
[0010]
  Claims1, 2, 4 and 5In the described invention, the claim3as well as6As described in the invention, if the failure detection means displays a failure when an abnormality is detected and stops all the functions of the ice making machine, the failure can be clearly detected and damage caused by the failure can be prevented. Expansion can be prevented in advance.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention embodied in an auger type ice making machine will be described below with reference to FIGS. In each embodiment, the same constituent elements and the same elements are denoted by the same reference numerals, and the description thereof is simplified.
[0012]
First, a first embodiment will be described with reference to FIGS. As for the structure of the auger type ice making machine in the first embodiment, FIG. 5 shows a schematic configuration of the entire auger type ice making machine, and FIG. 6 shows a specific structure around the ice making device of the auger type ice making machine. ing.
[0013]
As shown in FIG. 5, the auger type ice making machine includes an ice making device 1 centered on an ice making cylinder 1 a, an ice storage 18 provided on the ice making device 1, and a side portion of the ice making device 1. The ice making water tank 5 provided, the refrigeration apparatus 14 for cooling the ice making cylinder 1a, an operation panel 31, a controller 30 and the like are included.
[0014]
The ice making cylinder 1a is vertically installed in the ice making machine body and is made of stainless steel or the like. As shown in FIG. 6, a water supply port 2 is provided at the lower part of the ice making cylinder 1 a, and one end of the water supply pipe 3 is connected to the water supply port 2. The other end of the water supply pipe 3 is connected to a water supply port 6 provided at the bottom of the ice making water tank 5 via a connection hose 4. Accordingly, the ice making water stored in the ice making water tank 5 is supplied into the ice making cylinder 1 a via the connection hose 4 and the water supply pipe 3.
[0015]
An auger 16 is disposed inside the ice making cylinder 1a. The auger 16 is provided with a spiral blade 21 around the rotating shaft portion 20, and is connected to a geared motor (GM) as a driving device at a lower end portion. Reference numeral 22 denotes a mechanical seal that seals the lower end portion of the ice making cylinder 1 a at the lower end portion of the rotary shaft portion 20.
[0016]
Further, an evaporator 9 in which a cooling pipe is spirally wound is disposed on the outer peripheral surface of the ice making cylinder 1a. The evaporator 9 is for cooling the ice making cylinder 1a and constitutes an evaporator of the refrigeration apparatus 14. As shown in FIG. 5, the refrigeration apparatus 14 is formed of a refrigerant circuit in which a compressor (CM) 10, a condenser 11, an expansion valve 13, an evaporator 9 and the like are sequentially connected.
[0017]
The ice making water tank 5 is provided with a float switch 7. The float switch 7 senses an upper limit water level and a lower limit water level in the ice making water tank 5. When the float switch 7 senses a lower limit water level in the ice making water tank 5 under the control of the controller 30, a water supply circuit is provided. The water supply valve 8 provided at the open position is opened to supply ice making water into the ice making water tank 5. When the float switch 7 detects the upper limit water level in the ice making water tank 5, the water supply valve 8 is closed and the water supply to the ice making water tank 5 is stopped.
[0018]
The ice storage 18 stores ice sent from the ice making cylinder 1a. That is, ice making water is supplied from the ice making water tank 5 to the ice making cylinder 1a and the refrigeration device 14 is driven, whereby the ice making operation of the auger type ice making machine is performed. In this case, the cooling of the refrigeration device 14 is performed. By the action, the ice making water in the ice making cylinder 1a is cooled, and thin ice is formed on the inner wall surface of the ice making cylinder 1a. The thin ice is scraped off by an auger 16 that is rotationally driven by a geared motor (GM) 15, transferred to the upper part of the ice making cylinder 1a, and compressed and solidified by a pressing head 17 provided at the upper part in the ice making cylinder 1a. Thereafter, the ice is stored in an ice storage 18 provided at the upper end of the ice making cylinder 1a.
[0019]
The ice storage 18 is provided with an ice storage switch 19 similar to the conventional one. The ice storage switch 19 is configured such that the ice storage amount in the ice storage 18 is the upper set value of the ice storage switch 19, that is, the full ice amount value Q that is set as the ice storage 18 is almost full._FIs turned on, and the ice storage amount in the ice storage 18 is the upper set value, that is, the full ice amount value Q._FWhen the lower set value is decreased by a certain amount from, the power is turned off. As described above, since the differential cannot be greatly increased due to the mechanical problem of the ice storage switch 19 as described above, the full ice amount value Q_FIt is a value close to, and is considerably larger than the state where the ice storage 18 is empty. Further, the ice storage switch 19 is configured such that the ice storage amount in the ice storage 18 is the upper set value (full ice amount value Q_F) Is output to the controller 30, and when it is detected that the amount of ice stored in the ice storage 18 has decreased and reached a lower set value due to the use of ice, an off signal is output to the controller 30.
[0020]
The ice storage 18 is provided with a discharge port for discharging ice, and an electromagnetic opening / closing door SV (see FIG. 5) is provided at the discharge port, and an ice discharge path is provided via the electromagnetic opening / closing door SV. 41 is led out to the saucer 40. Further, in order to be able to supply water to the consumer, a water supply pipe 42 connected in parallel with the water supply valve 8 is led out to the receiving tray 40, and a water valve WV as an opening / closing valve is interposed in the middle thereof. ing.
[0021]
This auger type ice making machine is drivability controlled by the controller 30 based on an operation command from the operation panel 31. The operation panel 31 is provided with an ice making switch 32, a discharge switch 33, a selection key 34 for selecting the discharge of water and ice, an ice making display lamp 35, a low ice amount display lamp 36, and a failure display lamp 37. The selection key 34 includes keys 34a, 34b, and 34c that enable selection of three types of dispensing contents: “water only”, “ice only”, and “water and ice”. Further, the low ice amount indicator lamp 36 indicates the ice storage amount Q in the ice storage 18._TIs higher than the sky, but the upper set value (full ice amount value Q_F) To let you know that it has decreased considerably since. In other words, the low ice amount indicator lamp 36 indicates the ice storage amount Q in the ice storage 18._TIs the threshold Q set appropriately_EIs displayed when the threshold value Q is reached._EIs the ice storage amount Q in the ice storage 18_TIs full ice amount Q_FIt is set to an appropriate value suitable for notifying that it is approaching the sky by decreasing considerably.
[0022]
The controller 30 is composed of a microcomputer, a memory, and the like. The controller 30 takes in the on / off signal of the ice making switch 32 and the on / off signal of the discharge switch 33 from the operation panel 31, and further takes in the on / off signals of the ice storage switch 19, the float switch 7, etc. Therefore, an operation control device, an ice storage amount calculation processing means, and a failure detection means having the control contents described below are formed.
[0023]
FIG. 1 shows a flowchart of the operation control apparatus. In FIG. 1, in step S1, the state of the ice storage switch 19 is confirmed. Ice storage amount Q in ice storage 18_THas reached the upper set value, the ice storage switch 19 is on, so that the process proceeds to step S3 and the ice making operation is stopped. In addition, the ice storage amount Q in the ice storage 18_TIs equal to or lower than the lower set value, the ice storage switch 19 is off, and the process proceeds to step S2 to start the ice making operation.
[0024]
In step S4, the dispensing control is performed. This dispensing control constitutes a subroutine shown in FIG. In FIG. 2, first, in step T1, the state of the discharge switch 33 is confirmed. When the discharge switch 33 is off, there is no dispensing operation command and no dispensing is performed. Therefore, in step T2, SV off and WV off signals are output, the electromagnetic door SV is closed, and the water is discharged. The valve WV is closed. If the discharge switch 33 is on in step T1, it is confirmed in step T3 whether "water only" is selected by the selection key 34. If YES, that is, if the water only selection key 34a is turned on. In step T4, an SV OFF / WV ON output signal is issued, and the water valve WV is opened while the electromagnetic door SV is closed to pour out only water. If NO in step T3, the process proceeds to the next step T5 to check whether "Ice only" is selected. If YES, that is, if the ice-only selection key 34b is turned on, the SV is selected in step T6. An ON / WV OFF output signal is generated, the water valve WV is closed, the electromagnetic door SV is opened, and only ice is poured out. If NO in step T5, that is, if the water / ice selection key 34c is turned on, output signals of SV on and WV on are issued in step T7, and the electromagnetic door SV is opened. Water valve WV is opened and water and ice are poured out.
[0025]
Next, returning to the operation control routine of FIG. 1, in step S5, the ice storage amount Q of the ice storage 18 is obtained._TIs the threshold value Q_EIt is judged whether it is less. If NO in step S5, the state of the ice making switch 32 is confirmed in step S6. If OFF, a command to turn off the ice making display lamp 35 and the low ice amount display lamp 36 is issued in step S7. If it is ON in step S6, a command is issued to turn on the ice making display lamp 35 and turn off the low ice amount display lamp 36 in step S8. On the other hand, if YES at step S5, that is, ice storage amount Q_TIs the threshold value Q_EIf it is smaller, the state of the ice making switch 32 is confirmed in step S9, and if it is off, a command to turn off the ice making display lamp 35 and turn on the low ice amount display lamp 36 is issued in step S10. If it is ON in step S9, a command to turn on the ice making display lamp 35 and the low ice amount display lamp 36 is issued in step S11.
[0026]
FIG. 3 shows a calculation flow of the ice storage amount calculation processing means. In the operation control of FIG. 1, the interrupt process of FIG. 3 is executed in order to calculate the ice storage amount in the ice storage every predetermined time. In step E1 of FIG. 3, the state of the ice storage switch 19 is confirmed. When the ice storage switch 19 is on, that is, when the ice storage 18 is almost full, the ice storage amount Q is determined in step E2._TA predetermined full ice amount value Q calculated in advance_FReset to. After step E3, the full ice amount value Q reset at step E2_FThe amount of ice stored in the ice storage 18 changes from moment to moment based on_TIs calculated. If step E1 is off, step E2 is skipped and the processing after step E3 is performed.
[0027]
In step E3, it is confirmed whether or not the ice making operation is in progress. If YES, the process proceeds to step E4. If NO, step E4 is skipped. In step E4, the ice storage amount Q during the ice making operation._TIs the amount of ice making per unit time Q_MIn view of the increase in the amount of ice, the amount of ice making per unit time Q_MIs ice storage amount Q_TIs added to
[0028]
In step E5, the state of the electromagnetic door SV provided at the discharge port of the ice storage 18 is confirmed. When it is open, that is, when ice is discharged, the process proceeds to step E6, and when it is closed, that is, when ice is not discharged, step E6 is skipped. In step E6, the amount of stored ice Q during ice discharge._TIs the released amount per unit time Q_RRelease amount Q per unit time in view of the minute decrease_RThe amount of ice storage is Q_TIs subtracted from. Then, the interrupt process is completed by this step E6, and the operation control flow is returned to.
[0029]
FIG. 4 shows a detection flow of the failure detection means. In step P1, the ice storage amount Q calculated by the interrupt processing described above is used._TIs a preset danger value Q_AIt is judged whether it is larger. This danger value Q_AIs the full ice amount Q of the ice storage_FAs long as it is set to a much larger value and the ice making operation is performed normally, the ice storage amount Q_TIs dangerous value Q_AHowever, if the ice storage switch 19 is broken or the compressor 10, the geared motor 15, and the water supply valve 8 are broken, the calculation process is performed despite the fact that ice making is impaired. Calculated ice storage amount Q_TSeemingly dangerous value Q_ACan be exceeded. Accordingly, if YES in step P1, it is considered that some failure has occurred. In step P2, a failure display command is issued, the failure display lamp 37 is turned on, and further, the operation of the refrigeration apparatus 14 is stopped, and geared. A command is issued to stop all functions such as stopping the operation of the motor 15 and closing the water supply valve 8.
[0030]
As described above, according to the first embodiment, the ice storage amount Q is calculated by the ice storage amount calculation processing means._TIs calculated, so ice storage amount Q_TCan be grasped. In addition, ice storage amount Q_TIs full ice amount Q_FThe threshold value Q decreases toward the empty state from_E, Ice storage amount Q_TThe low ice amount indicator lamp 36 is turned on in order to notify the decrease in the amount of ice. Therefore, the user can know the approximate ice storage amount by turning on the low ice amount display lamp, and can operate the ice making machine in consideration of the subsequent use amount. As a result, the dissatisfaction of the user (customer) due to the sudden disappearance of ice is solved.
[0031]
Further, in the present embodiment, when ice is not normally stored in the ice storage 18, the ice storage amount Q_TIs dangerous value Q_ATherefore, failures due to a wide variety of causes such as a failure of the refrigeration apparatus 14, a failure of the ice making water system such as the water supply valve 8, and a failure of the geared motor 15 that drives the auger 16 are detected. Further, when a failure that prevents ice making occurs for some reason as described above, the failure display lamp 37 is turned on simultaneously with the failure detection, and all functions are stopped. To be prevented. For example, in the past, when ice has not been produced after long use, it cannot be determined whether ice making will not catch up or will not occur due to a failure, but in this embodiment, the failure display lamp 37 By turning on the light, the failure is immediately determined, so that the failure repair is not delayed.
[0032]
In the above embodiment, the ice storage amount Q calculated by the ice storage amount calculation processing means._TThe display is only displaying the low ice amount indicator lamp 36, but this is converted to digital and the constant ice storage amount Q is displayed._TMay be configured to be digitally displayed. Further, in the flow of FIG._EAnd set the ice storage amount Q step by step_TMay be displayed as a lamp.
[0033]
In addition, the ice stored in the ice storage 18 is partially melted and becomes smaller as time elapses._TEmission amount per unit time Q_RHowever, this ice storage amount Q_TEmission amount per unit time Q_RIs corrected by the elapsed time, the calculated ice storage amount Q_TAccuracy can be improved. The amount of discharge Q from the ice storage 18 per unit time Q_RIs the ice amount Q in the ice storage 18_TTherefore, if this point is corrected, the ice storage amount Q_TImproves accuracy.
[0034]
Next, a second embodiment will be described based on FIGS. In the second embodiment, the structure of the ice making machine is the same as that of the first embodiment, but in the vicinity of the discharge port of the ice storage 18, specifically in the part from the discharge port to the discharge passage 41, FIG. As shown, an ice detector 51 is provided for detecting whether or not ice is being discharged from the discharge port. As the ice detector 51, a photoelectric sensor may be provided in the discharge path to directly detect the presence or absence of ice, or a vibration sensor 51 may be provided on the side wall of the discharge path to release ice. The presence or absence of ice may be detected by detecting the vibration of the ice. In addition, an output signal indicating the presence / absence of ice from the ice sensor 51 is configured to be taken into the controller 30.
[0035]
In the second embodiment, the flowchart of the operation control apparatus is the same as that described in FIGS. 1 to 3, and the detection flow of the failure detection means is replaced with that in FIG. It is configured as follows.
That is, in step P11, the state of the release switch 33 is confirmed. If the discharge switch 33 is on, the presence / absence of ice by the ice sensor 51 is determined in step P12. If there is no ice, the process proceeds to step P13 and it is confirmed whether the low ice amount display lamp 36 is lit. In step P11, when the discharge switch 33 is off, it is confirmed in step P12 that ice is discharged from the discharge port and it is confirmed that there is ice, and in step P13, it is confirmed that the low ice amount display lamp 36 is lit. In each case, the process proceeds to Step P14 and the flag is set to 0.
[0036]
Next, when it is confirmed in step P13 that the low ice amount display lamp 36 is not lit, it is confirmed in step P15 whether the flag is 1 or 0. At this time, when the flag is 0, the ice storage display unit 36 described in FIG. 3 stores ice in the ice storage 18 although the low ice amount display lamp 36 is lit. This means that the ice is not discharged from the discharge port even though it is calculated as follows. In step P16, the flag is set to 1 and the timer is started. If ice does not come out during the set time of the timer, in step P17, it is confirmed that the timer has timed up, a failure display command is issued, the failure display lamp 37 is turned on, and the refrigeration apparatus The controller 30 issues a command to stop all functions such as stopping the operation of the motor 14 or the geared motor 15 or closing the water supply valve 8. If ice begins to be discharged during the set time of the timer, the presence of ice is confirmed in step P12, and the flag is reset to 0 in step P14, so that a failure display command is not issued.
As described above, it is possible to detect a failure even when configured as in the present embodiment.
[0037]
Next, a third embodiment will be described with reference to FIG.
In the third embodiment, the ice storage amount Q in the ice storage 18 is improved by improving the operation flow of the ice storage amount calculation processing means by the interrupt processing of FIG._TIn this calculation flow, only a part of the calculation flow is changed as shown in FIG. 9, and other configurations are the same as those in FIG. 3 in the first embodiment.
[0038]
That is, in FIG. 9, Steps E1 to E4 and Step E5 and the subsequent steps are exactly the same as those in FIG. 3, and Steps E11 and E12 are added between Steps E4 and E5. In step E11, ice storage amount Q_TIs full ice amount Q_FThe amount of ice storage Q_TIs full ice amount Q_FIf it exceeds, the ice storage amount Q in step E12_TA full ice amount value Q_FTo correct. In addition, ice storage amount Q_TIs full ice amount Q_FIf not, step E12 is skipped and the process proceeds to E5.
[0039]
By changing the calculation flow of the ice storage amount calculation processing means in this way, the ice making amount Q per unit time added in step E4._EThere is an error in the amount of ice and there is more than the actual amount of ice making._TIs calculated more than actual, the ice storage amount Q by the ice storage amount calculation processing means_TIs corrected. Therefore, the ice storage amount Q by the ice storage amount calculation processing means_TThe calculation accuracy of is increased.
This calculation flow can be used when the failure detection flow shown in FIG. 4 in the first embodiment is not provided. That is, when the failure detection means of FIG. 4 is removed in the first embodiment, and in the case of the second embodiment, the interrupt process of FIG. 9 may be adopted instead of the interrupt process of FIG. it can.
[0040]
【The invention's effect】
  Since this invention is comprised as mentioned above, there exist the following effects.
  Claim 1And 4According to the described invention, the ice storage amount can be grasped.
  Claims5According to the described invention, the error based on the ice making amount per unit time added during the ice making operation is corrected, and the accuracy of the calculated ice storage amount is improved.
[0041]
  Claims2 and 4According to the described invention, since it can be known in advance that the ice in the ice storage will be exhausted, the ice making machine can be operated in consideration of the amount used. As a result, customer dissatisfaction due to sudden disappearance of ice can be solved.
[0042]
  Claims1as well as4According to the described invention, since the occurrence of a failure can be detected because ice is not normally stored in the ice storage, a failure due to a wide range of causes can be detected.
[0043]
  Claim3as well as6According to the described invention, the failure is detected and displayed at the same time, and all the functions are stopped. Therefore, the failure can be clearly detected, and the expansion of damage caused by the failure can be prevented in advance. It becomes.
[Brief description of the drawings]
FIG. 1 is a control flowchart of an operation control device for an auger type ice making machine according to a first embodiment of the present invention.
FIG. 2 is a flow chart for dispensing control of the ice making machine.
FIG. 3 is a flowchart of ice storage amount calculation processing means of the ice making machine.
FIG. 4 is a flowchart of the failure detection means of the ice making machine.
FIG. 5 is a diagram showing a schematic overall configuration of the ice making machine.
FIG. 6 is a diagram showing a configuration around an ice making device of the ice making machine.
FIG. 7 is a diagram showing a schematic overall configuration of an auger type ice making machine according to a second embodiment of the present invention.
FIG. 8 is a flowchart of the failure detection means of the ice making machine.
FIG. 9 is a flowchart of ice storage amount calculation processing means of an auger type ice making machine according to a third embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Ice making apparatus, 1a ... Ice making cylinder, 3 ... Water supply pipe, 5 ... Ice making water tank, 7 ... Float switch, 8 ... Solenoid valve, 9 ... Evaporator, 10 ... Compressor, 14 ... Refrigerating device, 15 ... Geared motor (GM), 18 ... Ice storage, 19 ... Ice storage switch, 30 ... Controller, 31 ... Operation panel, 32 ... Ice making switch, 33 ... Release switch, 34 ... Selection key, 35 ... Ice making indicator lamp, 36 ... Low ice amount display Lamp 37: Failure indicator lamp 41 ... Ice discharge path 42 ... Water supply pipe 51 ... Ice detector SV ... Electromagnetic door, WV ... Water valve, Q_A... Dangerous value, Q_E... Threshold for determining low ice storage, Q_F... full ice amount, Q_M... Amount of ice making per unit time, Q_R... Amount of ice released per unit time, Q_T... the amount of ice storage.

Claims (6)

An ice making device for generating ice by cooling water for ice making by a cooling device;
An ice storage for storing the generated ice;
An ice storage switch that is turned on when the ice storage amount in the ice storage reaches an upper set value, and that is turned off when the ice storage amount reaches a lower set value that is a certain amount lower than the upper set value;
An operation control device for stopping the ice making operation when the ice storage switch is turned on, and restarting the ice making operation when the ice storage switch is turned off;
Each time the ice storage switch is turned on, it is assumed that the ice storage is full, and the ice storage amount in the ice storage is reset with the predetermined ice amount corresponding to the upper set value as the full ice amount value. The ice storage amount calculation processing means that calculates the ice storage amount in the ice storage by subtracting the set release amount per unit time during ice discharge and adding the set ice making amount per unit time during ice making operation ,
An auger comprising failure detection means for detecting an abnormality in which ice making is not performed when the ice storage amount calculated by the ice storage amount calculation processing means reaches an abnormal value exceeding the full ice amount value; equation ice machine. The operation control device displays, when the ice storage amount calculated by the ice storage amount calculation processing means reaches a low ice amount display value which is reduced by a predetermined amount from the full ice amount value. Item 2. An auger type ice making machine. 3. The auger type ice making machine according to claim 1, wherein the failure detecting means displays a failure when an abnormality is detected and stops all functions of the ice making machine. An ice making device for generating ice by cooling water for ice making by a cooling device;
An ice storage for storing the generated ice;
An ice storage switch that is turned on when the ice storage amount in the ice storage reaches an upper set value, and that is turned off when the ice storage amount reaches a lower set value that is a certain amount lower than the upper set value;
An operation control device for stopping the ice making operation when the ice storage switch is turned on, and restarting the ice making operation when the ice storage switch is turned off;
Each time the ice storage switch is turned on, it is assumed that the ice storage is full, and the ice storage amount in the ice storage is reset with the predetermined ice amount corresponding to the upper set value as the full ice amount value. The ice storage amount calculation processing means that calculates the ice storage amount in the ice storage by subtracting the set release amount per unit time during ice discharge and adding the set ice making amount per unit time during ice making operation ,
An ice detector provided near the ice outlet of the ice storage for sensing the presence or absence of ice;
A failure detection means for detecting an abnormality,
The operation control device displays this when the ice storage amount calculated by the ice storage amount calculation processing means reaches a low ice amount display value that is reduced by a predetermined amount from the full ice amount value,
The failure detection means detects an abnormality by detecting no ice by the ice sensor when the operation control device is not displaying the low ice amount display. 5. The ice storage amount is corrected to the full ice amount value when the calculated ice storage amount in the ice storage exceeds the full ice amount value except when the ice storage switch is turned on. Ice machine. 6. The ice making machine according to claim 4, wherein the failure detecting means displays a failure when an abnormality is detected and stops all functions of the ice making machine.

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