JP7285165B2 - How to operate the disinfection storage - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method of operating a disinfecting storage cabinet for storing washed tableware and disinfecting and drying the same with heated air.

Disinfection storage cabinets in which wet dishes after washing are placed in dish baskets and placed on ventilated shelves, and heated air (hot air) is circulated in the cabinet to disinfect and dry the dishes are widely used in hospitals and other places. Used in school cafeterias and other large restaurants. The sterilization storage is a facility that circulates hot air in contact with wet tableware to sterilize germs that may remain even after moisture evaporates, and provides clean tableware by high-temperature drying.

The disinfection storage is provided with a heater and an air blower, and the air blower is operated to circulate the heated air, which has exchanged heat with the heater, to the storage room in which tableware is stored. Then, in the disinfection storage, the heater is controlled ON-OFF based on the temperature detected by the temperature sensor provided in the storage room, and the state in which the storage room is maintained at a preset disinfection temperature at which the tableware can be disinfected is The tableware is disinfected and dried by continuing for a preset disinfecting and drying time.

There is a type of disinfection storage that has a plurality of storage rooms (see, for example, Patent Document 1). are installed, and the disinfection and drying operation of tableware in each storage room is controlled individually.

Utility Model Registration No. 3174994

In the disinfection storage cabinet disclosed in Patent Document 1, since the disinfection and drying operation of tableware in each storage room is individually controlled, the disinfection and drying operation provided corresponding to one of the plurality of storage rooms is performed. When the temperature sensor for the storage does not function normally due to a failure or the like, the disinfection/drying operation in the relevant storage room is stopped, and the disinfection/drying operation is performed only in the other storage rooms. Therefore, there is a problem that the tableware stored in the storage room where the temperature sensor has failed is not sterilized and dried.

That is, the present invention has been proposed in view of the problems inherent in the above-described conventional technology, and to preferably solve the problems. To provide a method for operating a disinfection storage which can disinfect and dry tableware stored in all the storage chambers even if there is.

In order to overcome the above problems and achieve the intended purpose, the method for operating a disinfection storage cabinet according to the invention of claim 1 comprises:
A plurality of storage rooms for storing dishes, a heater, a blower and a temperature sensor provided corresponding to each storage room are provided, and heated air generated by the heater and the blower is circulated in each storage room to store the tableware. A method for operating a disinfection storage cabinet that heats to disinfect and dry, and performs disinfection and drying operation by controlling ON-OFF of the corresponding heater based on the temperature detected by the temperature sensor,
The plurality of storage rooms are spatially communicated, and if a temperature sensor corresponding to one of the storage rooms fails, the disinfection/drying operation in the storage room in which the temperature sensor failed is performed in the other storage rooms. The gist is that it is performed based on the temperature detected by the temperature sensor.
According to the first aspect of the invention, the disinfection and drying operation in a storage room with a malfunctioning temperature sensor can be performed based on the temperature detected by a normal temperature sensor in another storage room. A situation in which disinfection and drying are not performed can be avoided.

The invention according to claim 2 is
A temperature sensor is provided for each of the storage rooms on the suction side of the air used to heat the tableware to the heater and on the side of the heated air blowing out from the heater,
If one of the temperature sensors provided corresponding to one of the plurality of storage rooms fails, the disinfection and drying operation in the storage room where the temperature sensor failed is performed. Based on the temperature detected by the temperature sensor in the storage room,
The gist of the invention is that when both temperature sensors provided corresponding to one of the plurality of storage rooms fail, sterilization/drying operations in all the storage rooms are stopped.
According to the invention of claim 2, even if one of the temperature sensors provided on each of the suction side and the blowing side of the heater fails, the temperature sensor fails based on the detected temperature of the normal temperature sensor in the other storage room. A disinfection drying operation can be performed in the storage room.

The invention according to claim 3 is
If one of the heaters and blowers corresponding to one storage room fails, the sterilization and drying operation is stopped in the storage room where one of the heaters and blowers has failed,
In other storage rooms where the heaters and blowers are not out of order, the sterilization/drying operation is continued by ON-OFF control of the heaters based on the temperature detected by the corresponding temperature sensors.
In the third aspect of the invention, even if the sterilizing/drying operation is stopped in the storage room where either the heater or the blower has failed, the sterilizing/drying operation is continued in the other storage rooms that are spatially connected to each other. Heated air generated in a normal storage room can be circulated to an abnormal storage room, and a situation in which tableware cannot be sterilized and dried due to failure of a heater or an air blower can be avoided.

The invention according to claim 4 is
The sterilization according to the temperature difference between the temperature detected by the temperature sensor corresponding to the storage room in which either the heater or the blower is out of order and the temperature detected by the temperature sensor corresponding to the storage room in which the heater or the blower is not out of order. The gist is that the disinfection drying time for performing the drying operation is variable.
In the fourth aspect of the invention, the disinfecting and drying time is varied according to the temperature difference between the storage room in which the disinfecting and drying operation is not performed and the temperature in the storage room in which the disinfecting and drying operation is performed. Suitable disinfection and drying of tableware stored in each storage room can be performed. In other words, if there is a storage room where the disinfection drying operation is not performed, the amount of dishes to be disinfected and dried by the heated air generated in the other storage room will increase and the load will increase. There is a risk that the tableware may not be sufficiently disinfected and dried, but if the disinfection and drying time is extended according to the temperature difference, all the tableware can be suitably disinfected and dried.

The invention according to claim 5 is
It is possible to switch between a first operation mode in which the tableware is disinfected and dried in each of the plurality of storage rooms and a second operation mode in which the tableware is disinfected and dried only in some of the plurality of storage rooms. is set and
When the operation mode is switched to the second operation mode, the storage room in which the disinfection/drying operation is performed in the second operation mode and the other storage chambers in which the disinfection/drying operation is not performed are cut off to perform the disinfection/drying operation. A summary of what was done.
In the invention of claim 5, when the operation mode is switched to the second operation mode in which the tableware disinfection/drying operation is performed only in some of the storage rooms, communication with other storage rooms in which the disinfection/drying operation is not performed is blocked. , When the amount of dishes to be dried is small, it is possible to prevent the waste of electric power due to the circulation of heated air in the storage room that does not need to be disinfected and dried, and the disinfection and drying operation that matches the amount of dishes is performed. It can be carried out.

According to the operation method of the disinfection storage according to the present invention, even if the temperature sensor corresponding to one of the plurality of storage rooms fails, the tableware stored in all the storage rooms can be disinfected and dried. can be done.

1 is a schematic diagram showing a disinfection storage in which an operation method according to an embodiment is implemented, showing a state in which a first storage room and a second storage room are partitioned by a partition wall; FIG. 1 is a schematic view of a disinfection storage in which an operating method according to an embodiment is implemented, showing a state in which a first storage chamber and a second storage chamber are in spatial communication; FIG. FIG. 3 is a control block diagram of the disinfection storage cabinet according to the embodiment; FIG. 5 is an explanatory diagram showing the relationship between the state of a temperature sensor and whether or not operation is possible when the operating method according to the embodiment is performed;

Next, the operation method of the disinfection storehouse according to the present invention will be described below with reference to the accompanying drawings, taking a preferred embodiment.

1 and 2 are schematic diagrams showing a disinfection warehouse in which the operating method of the embodiment is implemented. The disinfection storage is a two-chamber type with two storage chambers 12 and 13 that can be partitioned by a partition wall 11 inside a housing 10 made of a heat insulating material. The room 12 is designated as the second storage room 13 on the left side. The inside of the first storage room 12 is separated from the inner wall of the housing 10 and the partition wall 11 by a first partition wall 14 consisting of a top plate 14a and side plates 14b and 14c. A first storage chamber 15 is defined inside, and a first hot air circulation path 16 is defined outside the first partition wall 14 . The inside of the second storage room 13 is separated from the inner wall of the housing 10 and the partition wall 11 by a second partition wall 17 consisting of a top plate 17a and side plates 17b and 17c. A second storage chamber 18 is defined inside the partition 17 , and a second hot air circulation path 19 is defined outside the second partition wall member 17 . Ventilation shelves 20 are horizontally arranged in multiple stages at required intervals in each storage chamber 15, 18, and ventilation baskets 22 for storing tableware 21 are placed on the ventilation shelves 20. - 特許庁The partition wall 11 is detachably attached to the housing 10, and by removing it from the housing 10 (see FIG. 2), the first storage room 12 (first storage room 15) and the second storage room 13 can be opened. (Second storage room 18) is communicated with and attached to housing 10 (see FIG. 1), first storage room 12 (first storage room 15) and second storage room 13 (second storage room). It is configured to block communication with the chamber 18). Specifically, by removing the partition 11 from the housing 10, the first hot air circulation path 16 and the second hot air circulation path 19 are spatially communicated.

As shown in FIGS. 1 and 2, the first storage chamber 12 has a lower portion of the first storage chamber 15 which is fully opened so that the heated air (hot air) from the first hot air circulation path 16 is transferred to the first storage chamber. It is the first hot air inlet 23 introduced to 15 . A first hot air outlet 24 is provided in the top plate 14a of the first partition wall 14, and the heated air introduced into the first storage chamber 15 is directed through the first hot air outlet 24 to the first air outlet. It is configured to be able to flow out to the hot air circulation path 16 . A fan rotated by a first heater (heater) 25 and a first fan motor 26 is provided between the inside of the top wall 10a of the housing 10 and the outside of the top plate 14a of the first partition wall body 14. 26 a is provided, and the air blown out from the fan 26 a is heated by the first heater 25 . In the embodiment, a blower is constructed from the first fan motor 26 and the fan 26a. The heated air generated by the first heater 25 and the first fan motor 26 flows from the first hot air circulation path 16 into the first storage chamber 15 through the first hot air inlet 23, and then flows into the first storage chamber 15. The hot air circulates so as to flow out from the hot air outlet 24 to the first hot air circulation path 16, and the tableware 21 in the first storage chamber 15 is disinfected and dried by the circulating heated air.

As shown in FIGS. 1 and 2, the configuration of the second storage room 13 is the same as the configuration of the first storage room 12, and the lower part of the second storage room 18 is fully open. It serves as a second hot air inlet 27 for introducing heated air (hot air) from the second hot air circulation path 19 into the second storage chamber 18 . A second hot air outlet 28 is formed in the top plate 17a of the second wall member 17, and the heated air introduced into the second storage chamber 18 is directed through the second hot air outlet 28 to the second outlet 28. It is configured to be able to flow out to the hot air circulation path 19 . A fan rotated by a second heater (heater) 29 and a second fan motor 30 is provided between the inside of the top wall 10a of the housing 10 and the outside of the top plate 17a of the second partition wall body 17. 30 a is provided, and the air blown out from the fan 30 a is heated by the second heater 29 . In the embodiment, a blower is composed of the second fan motor 30 and the fan 30a. The heated air generated by the second heater 29 and the second fan motor 30 flows from the second hot air circulation path 19 into the second storage chamber 18 via the second hot air inlet 27, and then flows into the second storage chamber 18. The hot air circulates so as to flow out from the hot air outlet 28 to the second hot air circulation path 19, and the tableware 21 in the second storage chamber 18 is disinfected and dried by the circulating heated air.

The side plates 14b, 14c, 17b, and 17c of the first partition wall 14 and the second partition wall 17 are provided with a plurality of ventilation holes through which the first hot air circulation path 16 and the second hot air circulation path 19 are circulated. Heated air may flow into storage chambers 15 and 18 through vents.

As shown in FIGS. 1 and 2, the first hot air outlet 24 on the suction side of the air heated by the tableware 21 stored in the first storage chamber 15 is placed in the vicinity of the first hot air outlet 24 on the suction side to the first heater 25. A sensor 31 is arranged, and a blowout side first temperature sensor 32 is arranged in the first hot air circulation path 16 on the blowout side of the heated air from the first heater 25 . In addition, a suction-side second temperature sensor 33 is disposed in the vicinity of the second hot air outlet 28, which is the suction side of the air heated by the tableware 21 stored in the second storage chamber 18, to the second heater 29. In addition, a blowout-side second temperature sensor 34 is arranged in the second hot air circulation path 19 on the blowout side of the heated air from the second heater 29 . The first blowout-side temperature sensor 32 and the second blowout-side temperature sensor 34 are arranged in the hot air circulation paths 16 and 19 on the sides of the first storage room 12 and the second storage room 13 that are separated from each other.

As shown in FIG. 3, the controller 35 for controlling the disinfection storage includes a first controller 36 for controlling the disinfection drying operation in the first storage room 12 and the disinfection drying operation in the second storage room 13. A second control unit 37 is provided. The first heater 25, the first fan motor 26, the first suction-side temperature sensor 31, and the first blow-out-side temperature sensor 32 are connected to the first control unit 36, and detected by both the first temperature sensors 31 and 32. The first control unit 36 is configured to perform ON/OFF control (energization control) of power supply to the first heater 25 based on the detected temperatures (temperature on the suction side, temperature on the blowout side). Further, the second heater 29, the second fan motor 30, the second suction side temperature sensor 33 and the second blowing side temperature sensor 34 are connected to the second control section 37, and both the second temperature sensors 33 and 34 detect Based on the detected temperatures (temperature on the suction side, temperature on the blowout side), the second control unit 37 is configured to perform ON/OFF control (energization control) of power supply to the second heater 29 . In the embodiment, the condition that the suction side temperature detected by the first suction side temperature sensor 31 exceeds the preset set temperature T and the blowout side temperature detected by the first blowout side temperature sensor 32 are set. The first heater 25 is turned off (power supply is stopped) when either one of the conditions of exceeding the upper limit set temperature T1 (=T+α) higher than the temperature T by a predetermined temperature α (for example, 10° C.) is satisfied. , the condition that the suction side temperature detected by the first suction side temperature sensor 31 is lower than the set temperature T, and the condition that the blowout side temperature detected by the first blowout side temperature sensor 32 is lower than the upper limit set temperature T1. is satisfied, the first heater 25 is set to be ON-controlled (energized). By controlling the ON-OFF state of the first heater 25 in this way, the central temperature in the first storage chamber is maintained at the set temperature T. As shown in FIG. The upper limit set temperature T1 is set within a range in which the temperature at the center of the storage room does not exceed the set temperature T in the initial operation of the disinfection storage.

The ON/OFF control of the second heater 29 based on the detected temperatures of the suction side second temperature sensor 33 and the blowout side second temperature sensor 34 is also This is the same as ON-OFF control of the first heater 25 based on the detected temperature. The first control unit 36 and the second control unit 37 are configured to be able to mutually recognize the temperature detected by the corresponding temperature sensors 31, 32, 33, and 34 through communication, and the control device itself Detected temperature information of each temperature sensor 31, 32, 33, 34 is configured to be sharable.

The control device 35 includes an operation timer 38 for setting a disinfection drying time (operating time, for example, 60 minutes) during which a disinfection drying operation is performed to disinfect and dry the tableware 21 by heating at the set temperature T. , when the suction-side temperature detected by the first suction-side temperature sensor 31 or the second suction-side temperature sensor 33 exceeds the set temperature T for the first time, the operation timer 38 counts. set to start. At the same time when the operation timer 38 finishes counting, the control device 35 turns off the heaters 25 and 29 prior to the control based on the temperatures detected by the temperature sensors 31, 32, 33, and 34, thereby performing the disinfection/drying operation. configured to terminate. In addition, the controller 35 has a first operation mode in which the disinfection/drying operation is performed in each of all the storage rooms 12 and 13, and a disinfection/drying operation in only one of the first storage room 12 and the second storage room 13. A changeover switch 39 is connected to switch between a second operation mode for performing In the second operation mode, the storage rooms 12 and 13 in which the disinfection/drying operation is performed can be selected from the first storage room 12 and the second storage room 13 . That is, when the first operation mode is set by the switching operation of the changeover switch 39, the control device 35 causes the controllers 36 and 37 to perform the disinfection/drying operation in each of the storage rooms 12 and 13. 25, 26, 29, 30), and when the second operation mode is set by the switching operation of the switch 39, the control device 35 selects the first storage room 12 or the second storage room 13. The corresponding devices (25, 26, 29, 30) are controlled so that only the corresponding control units 36, 37 perform the disinfection/drying operation. In the disinfection storage cabinet of the example, when all mechanisms (25, 26, 31, 32, 29, 30, 33, 34) are normal and set to the first operation mode, all storage chambers 12, 13 are started at the same time, and the disinfection/drying operations of all the storage rooms 12 and 13 are completed when the disinfection/drying time elapses.

A first abnormality notification means 40 such as a lamp, a buzzer, or a display is connected to the first control section 36 . When the first controller 36 determines that any one of the first heater 25, the first fan motor 26, and the first temperature sensors 31 and 32 corresponding to the first storage room 12 has failed, the first abnormality notification means 40 is configured to notify the occurrence of an abnormality. The second controller 37 is also connected to the second abnormality notification means 41 in the same manner as the first controller 36 , and the second controller 37 controls the second heater 29 corresponding to the second storage room 13 and the second heater 29 . When it is determined that one of the fan motor 30 and the second temperature sensors 33 and 34 has failed, the second abnormality notification means 41 is configured to notify the occurrence of abnormality. Fan motor failure can be detected by various known motor failure detection means such as a rotation sensor for detecting rotation of the motor, and heater failure can be detected by various known heaters such as a temperature sensor for detecting heater temperature. It can be detected by failure detection means, and controllers 36 and 37 determine failure of heaters 25 and 29 and fan motors 26 and 30 based on the detection results of these failure detection means. In addition, the temperature sensors 31, 32, 33, and 34 are configured so that the controllers 36 and 37 determine the failure when the detected temperature is not input to the corresponding controllers 36 and 37. FIG. The failure information of the devices 25 , 26 , 31 , 32 , 29 , 30 , 33 , 34 is also shared by the control device 35 .

In the disinfection storage of the embodiment, one of the two first temperature sensors 31, 32 corresponding to the first storage room 12 or one of the two second temperature sensors 33, 34 corresponding to the second storage room 13 (when the detected temperature is not input to the control units 36, 37) due to a failure, etc., the storage chambers 12, 13 do not immediately stop the disinfection and drying operation, and the temperature sensors are not malfunctioning. Based on the temperatures detected by the two temperature sensors 31, 32, 33, 34 corresponding to the chambers 12, 13, the heaters 25, 29 are set to be ON-OFF controlled to continue the operation. When the temperature sensor fails, the abnormality notification means 40 and 41 notify the abnormality. Also, when both of the two first temperature sensors 31 and 32 corresponding to the first storage room 12 or both of the two second temperature sensors 33 and 34 corresponding to the second storage room 13 stop working due to failure or the like. is set to stop the disinfection drying operation of the two storage rooms 12, 13 immediately.

FIG. 4 shows the relationship between the operation and the presence/absence of abnormality notification according to typical patterns of the presence/absence of failure of the temperature sensors 31, 32, 33, and 34. As shown in FIG. Pattern 1 indicates a case where all the temperature sensors 31, 32, 33, 34 are normal. Pattern 2 shows a pattern in which only the blow-out side first temperature sensor 32 of the first storage room 12 fails. In this case, two normal second temperature sensors 33 corresponding to the second storage room 13 , 34, the first heater 25 and the second heater 29 are ON-OFF controlled to continue the current operation when the failure occurred, and to disinfect both the storage rooms 12 and 13 next time. Dry operation is also possible. Pattern 3 shows a pattern in which only the suction-side second temperature sensor 33 of the second storage room 13 fails. Based on the temperatures detected by the sensors 31, 32, the first heater 25 and the second heater 29 are controlled to turn on and off to continue the current operation when the failure occurred, and to keep the storage rooms 12, 13 next sterilization and drying operation are also possible. On the other hand, pattern 4 shows a pattern in which both of the two first temperature sensors 31 and 32 of the first storage room 12 have failed. , 13 immediately stop the current disinfection/drying operation, and the next disinfection/drying operation of both storage rooms 12 and 13 is disabled. The pattern shown in FIG. 4 is an example, and in the disinfection storage of the embodiment, if any one of the four temperature sensors 31, 32, 33, 34 fails, The current disinfection/drying operation in the two storage rooms 12 and 13 is continued, and the next disinfection/drying operation in both the storage rooms 12 and 13 is also possible.

In the disinfection storage of the embodiment, the first heater 25 or the first fan motor 26 corresponding to the first storage room 12 or the second heater 29 or the second fan motor 30 corresponding to the second storage room 13 fails. If the operation is stopped due to a The controllers 36 and 37 are configured to control various devices so that the storage chambers 12 and 13 in which the heaters 25 and 29 or the fan motors 26 and 30 are not out of order are stopped immediately and the disinfection and drying operation is continued.

When the heaters 25, 29 or the fan motors 26, 30 fail and the disinfection drying operation is continued only in the storage rooms 12, 13 where the heaters 25, 29 or the fan motors 26, 30 are not out of order, The control device 35 controls the temperature detected by the temperature sensors 31, 32, 33, and 34 of one of the storage rooms 12, 13 in which the disinfection/drying operation is stopped, and the temperature of the other storage room 12, 13, in which the disinfection/drying operation Depending on the temperature difference from the temperature detected by the temperature sensors 31 , 32 , 33 , 34 , it is set to vary the disinfection/drying time of the continuing disinfection/drying operation. Specifically, in the embodiment, when the temperature difference between the detected temperature of the first suction-side temperature sensor 31 and the detected temperature of the second suction-side temperature sensor 33 is (1) within a preset allowable value, ( 2) If the value is greater than the allowable value and is equal to or less than a preset first threshold value, or (3) if the value is greater than the first threshold value. In the case of (2), control is performed to extend the disinfection/drying time by a preset first extension time, and in the case of (3), the disinfection/drying time is preset longer than the first extension time. It is configured to perform control to extend by the second extension time. In addition, the first extension time and the second extension time are sterilized and disinfected with the heated air generated by one heater 25, 29 and fan motor 26, 30. A value determined by experiments or the like is used, which allows drying.

The disinfection storage of the embodiment is equipped with temperature sensors (not shown) for detecting the temperatures of the heaters 25 and 29, respectively. be. Then, when the temperature detected by one of the temperature sensors for preventing excessive temperature rise reaches a preset excessive temperature, the control device 35 immediately stops the disinfection drying operation in all the storage rooms 12 and 13. It is configured to control each device 25, 26, 29, 30 as follows.

[Action of Example]
Next, the operation of the method for operating the disinfection storage cabinet according to the embodiment will be described.

(Regarding the case of the first operation mode)
When the first operation mode is set by the switching operation of the changeover switch 39 and the first operation mode is operated in the disinfection storage, as shown in FIG. The first storage room 12 and the second storage room 13 are spatially connected. Then, when the operation of the disinfection storage is started, the control device 35 causes the control units 36 and 37 to simultaneously start the disinfection/drying operation in the corresponding storage chambers 12 and 13 . That is, the heaters 25, 29 and the fan motors 26, 30 are energized to circulate the heated air through the hot air circulation paths 16, 19 and the storage chambers 15, 18. Raise the temperature. When the first suction-side temperature sensor 31 or the second suction-side temperature sensor 33 detects a preset set temperature T, the operation timer 38 starts counting. After that, based on the temperatures detected by the first intake-side temperature sensor 31 and the first blow-out-side temperature sensor 32, the first controller 36 controls the ON/OFF of the first heater 25, and the inside of the first storage chamber 12 ( The temperature of the first storage chamber 15) is maintained at the set temperature T. In addition, based on the temperatures detected by the second temperature sensor 33 on the suction side and the second temperature sensor 34 on the blowing side, the second control unit 37 controls the ON/OFF of the second heater 29 to 2 The temperature of the storage chamber 18) is maintained at the set temperature T. At the same time when the operation timer 38 finishes counting, the control device 35 turns off the heaters 25 and 29 prior to the control based on the temperatures detected by the temperature sensors 31, 32, 33, and 34, thereby performing the disinfection/drying operation. terminate.

Here, in the disinfection storage cabinet of the embodiment, the disinfection drying operation in each of the storage chambers 12 and 13 is performed by temperature sensors 31 and 33 for detecting the temperature on the suction side of the heaters 25 and 29 and temperature sensors for detecting the temperature on the outlet side. It is based on the detected temperatures of the two temperature sensors 32 and 33 . Specifically, the condition that the suction side temperature detected by the first and second temperature sensors 31 and 33 on the suction side exceeds the set temperature T, and the condition that the temperature on the suction side exceeds the set temperature T The heaters 25 and 29 are controlled to be OFF when either one of the conditions that the blow-out side temperature exceeds the upper limit set temperature T1 is satisfied. That is, the heaters 25 and 29 can be turned on until the first and second temperature sensors 32 and 34 on the outlet side detect the upper limit set temperature T1 which is higher than the set temperature T by the predetermined temperature α. The time required for the center temperature to reach the set temperature T can be shortened. Moreover, since the upper limit set temperature T1 is set to a value at which the center temperature of the storage compartment does not rise above the set temperature T, deterioration of the tableware 21 due to exposure to high temperatures is prevented. Furthermore, after the temperature in the center of the storage room reaches the set temperature T, the first and second temperature sensors 31 and 33 on the suction side that detect the temperature on the suction side detect the set temperature T so that the heaters 25 and 29 are turned on. Since the temperature is turned off, the temperature in the center of the storage room does not rise to the upper limit set temperature T1. That is, by ON-OFF controlling the heaters 25, 29 based on the suction side temperature and the blowing side temperature, the temperature rise in the storage chamber can be accelerated, and the tableware 21 can be prevented from being exposed to high temperatures and deteriorating. be able to.

(When the temperature sensor fails)
Next, cases where the temperature sensors 31, 32, 33, and 34 fail while the first operation mode is set will be described using pattern 2 and pattern 4 in FIG.

In a situation where the disinfecting and drying operation is normally performed in the corresponding storage chambers 12 and 13 by the control units 36 and 37, there is no input of the detected temperature from the blowout side first temperature sensor 32, and the first control unit When the controller 36 determines that the first blowout-side temperature sensor 32 has failed, the first controller 36 communicates with the second controller 37 to detect the second intake-side temperature sensor 33 and the second blowout-side temperature sensor. Based on the detected temperature of 34, the first heater 25 is ON-OFF controlled to continue the disinfecting/drying operation in the first storage room 12. In addition, the second control unit 37 controls the ON/OFF of the second heater 29 based on the temperatures detected by the second temperature sensor 33 on the suction side and the second temperature sensor 34 on the blowing side, so that the temperature in the second storage room 13 is Continue the disinfection drying operation. Further, the first control unit 36 notifies the first abnormality notifying means 40 that the blowout-side first temperature sensor 32 has failed.

The control device 35 terminates the current disinfection/drying operation, which is being performed when the first blowout-side temperature sensor 32 fails, at the same time as the operation timer 38 finishes counting. Then, when new tableware 21 is stored in each storage chamber 15, 18 and operation of the disinfection storage is newly started, each control unit 36, 37 detects that the second temperature sensor 33 on the suction side and the second temperature sensor 33 on the blowing side are normal. Based on the temperature detected by the second temperature sensor 34, the corresponding heaters 25, 29 are controlled to be ON/OFF, and the disinfection drying operation is performed in both the storage rooms 12, 13.

In a situation where the disinfecting and drying operation is normally performed in the corresponding storage chambers 12 and 13 by the control units 36 and 37, the temperature detected by the first suction side temperature sensor 31 and the first blowout side temperature sensor 32 When there is no input and the first control unit 36 determines that the first suction-side temperature sensor 31 and the first blow-out-side temperature sensor 32 have failed, the control device 35 continues to operate in all the storage rooms 12 and 13. Immediately stop the disinfection and drying operation of , and do not start a new (next) disinfection and drying operation. Further, the first controller 36 notifies the first abnormality notifying means 40 that the first temperature sensor 31 on the suction side and the first temperature sensor 32 on the blowing side have failed.

That is, even if the blow-out side first temperature sensor 32 of the first storage room 12 fails, the disinfection drying operation in the first storage room 12 can Since the operation is continued based on the temperature detected by the sensor 34, the sterilizing and drying operation is prevented from ending before the tableware 21 stored in the first storage chamber 15 of the first storage chamber 12 is not sterilized and dried. be able to. Also, when disinfecting and drying new tableware 21, based on the temperatures detected by the normal intake-side second temperature sensor 33 and blow-out side second temperature sensor 34, both storage rooms 12, 13 are disinfected and dried. Since operation can be performed, the amount of tableware 21 to be disinfected and dried does not decrease. Furthermore, even if the user who recognizes that the blow-out side first temperature sensor 32 has failed due to the abnormality notification by the first abnormality notification means 40 and it takes time to contact the manufacturer and fix the failure, both storage rooms 12 , 13 can perform the disinfecting and drying operation, so that the disadvantages to the user can be minimized. In other words, the manufacturer has enough time to dispatch a worker to fix the failure after receiving the notification of the failure from the user. Further, as shown in FIG. 2, since the first storage room 12 and the second storage room 13 are in spatial communication, the temperatures of both storage rooms 12 and 13 are averaged, and the blow-out side first temperature sensor 32 The first heater 25 of the malfunctioning first storage room 12 is ON-OFF controlled based on the temperatures detected by the normal suction side second temperature sensor 33 and blowout side second temperature sensor 34 of the second storage room 13. The temperature of both the storage rooms 12 and 13 can be maintained at the set temperature T even if the In both storage rooms 12 and 13, the heaters 25 and 29 are controlled to be turned on and off based on the temperature on the suction side and the temperature on the blowout side, so that the temperature rise in the storage room can be accelerated. can be prevented from deteriorating due to exposure to high temperatures.

Next, when one of the heaters 25, 29 or the fan motors 26, 30 fails while the first operation mode is set, the first fan motor 26 corresponding to the first storage room 12 fails. I will explain when I do.

When the first control unit 36 determines that the first fan motor 26 has failed while the disinfection drying operation is normally performed in the corresponding storage chambers 12 and 13 by the control units 36 and 37, The first controller 36 immediately stops the disinfection drying operation in the first storage room 12 . Further, the first control unit 36 notifies the first abnormality notification means 40 that the first fan motor 26 has failed. However, the disinfecting/drying operation in the second storage room 13 where the second heater 29 and the second fan motor 30 are normal continues, and the disinfecting/drying operation in the second storage room 13 ends when the count of the operation timer 38 ends. . In addition, when the first fan motor 26 fails, the control device 35 continues only the current disinfection/drying operation in the second storage room 13 in which the first fan motor 26 has failed until the disinfection/drying time. A new (next) disinfection/drying operation is not started in the storage rooms 12 and 13 of .

As shown in FIG. 2, the first storage room 12 and the second storage room 13 are in communication with each other in space. Heated air generated by the second heater 29 and the second fan motor 30 flows from the second hot air circulation path 19 into the first hot air circulation path 16 and is stored in the first storage chamber 15 by the heated air. The tableware 21 can be disinfected and dried. That is, the heated air generated in the normal second storage room 13 can be circulated to the abnormal first storage room 12, and the failure of the first fan motor 26 prevents the disinfection and drying of the tableware 21. situation can be avoided.

Further, when the disinfection drying operation in the first storage room 12 is stopped due to a failure of the first fan motor 26, the control device 35 detects the temperature detected by the suction side first temperature sensor 31 of the first storage room 12, If the temperature difference from the temperature detected by the second temperature sensor 33 on the suction side of the second storage room 13 is within the allowable value, the disinfection/drying operation in the second storage room 13 is continued for the normal disinfection/drying time. control each mechanism to terminate On the other hand, when the temperature difference is greater than the allowable value and equal to or less than the first threshold value, the control device 35 extends the disinfection/drying operation by the first extension time from the normal disinfection/drying time, and terminates the operation. When the temperature difference is greater than the first threshold value, each mechanism is controlled so that the disinfection/drying operation is terminated after extending the disinfection/drying operation by the second extension time from the normal disinfection/drying time. During the first extended time and the second extended time, the heated air generated by one heater 25, 29 and fan motor 26, 30 sterilizes and dries the tableware 21 stored in all the storage chambers 15, 18. Since the possible time is set, the tableware 21 stored in all the storage rooms 12 and 13 can be properly disinfected and dried even if the disinfecting/drying operation in one of the storage rooms 12 is stopped. .

(Regarding the case of the second operation mode)
When the second operation mode is set by the switching operation of the changeover switch 39 and the second operation mode is operated in the disinfection storage, as shown in FIG. The communication state between the first storage room 12 and the second storage room 13 is cut off. It should be noted that in the second operation mode, it is assumed that the disinfection/drying operation is selected only in the first storage room 12 .

That is, when the operation of the disinfection storage is started, the control device 35 starts the disinfection drying operation in the first storage room 12 only by the first control section 36 . That is, the first heater 25 and the first fan motor 26 are energized, the heated air is circulated through the first hot air circulation path 16 and the first storage room 12, and the inside of the first storage room 15 is circulated. Raise the temperature. When the suction side first temperature sensor 31 detects a preset temperature T, the operation timer 38 starts counting. Thereafter, based on the temperatures detected by the first intake-side temperature sensor 31 and the first blow-out-side temperature sensor 32, the first controller 36 controls the ON-OFF of the first heater 25, and the inside of the first storage chamber 12 ( The temperature of the first storage chamber 15) is maintained at the set temperature T. At the same time when the operation timer 38 finishes counting, the control device 35 turns off the first heater 25 prior to the control based on the temperatures detected by the first intake-side temperature sensor 31 and the first blow-out temperature sensor 32, The disinfection drying operation in the first storage room 12 is ended.

In the disinfection storage cabinet of the embodiment, when switching to the second operation mode in which the tableware 21 is disinfected and dried only in some of the storage rooms 12 (or 13), the other storage rooms 13 (or 12), the sterilization and drying operation is performed only in the selected storage room 12 (or 13) while the communication with the storage room 12) is blocked. The electric power is prevented from being wasted due to the circulation of heated air in the storage room 13 (or 12) which does not need to be used, and the sterilization/drying operation suitable for the amount of tableware 21 can be performed.

[Change example]
The present application is not limited to the configuration of each embodiment described above, and other configurations can be appropriately employed.
(1) Although two storage rooms are provided in the embodiment, the number of storage rooms may be three or more, as long as the plurality of storage rooms can be communicated with each other.
(2) In the embodiment, two temperature sensors are provided for each storage room, but one temperature sensor may be provided for each storage room. The disinfecting and drying operation in the stored storage room may be performed based on the temperature detected by the normal temperature sensor.
(3) In the embodiment, when the heater or the fan motor (blower) fails, the next new disinfection/drying operation is not performed, but it may be performed.
(4) In the embodiment, a controller for controlling the disinfection and drying operation is provided for each storage room. can be

12 1st storage room (storage room), 13 2nd storage room (storage room), 21 tableware 25 1st heater (heater), 26 1st fan motor (blower)
26a fan (blower), 29 second heater (heater)
30 second fan motor (blower), 30a fan (blower)
31 Suction side first temperature sensor (temperature sensor), 32 Blow side first temperature sensor (temperature sensor)
33 Suction side second temperature sensor (temperature sensor), 34 Blow side second temperature sensor (temperature sensor)

Claims (5)

A plurality of storage rooms (12, 13) for storing tableware (21), heaters (25, 29) and blowers (26, 26a, 30, 30a) provided corresponding to each storage room (12, 13). and temperature sensors (31, 32, 33, 34), and the heated air generated by the heaters (25, 29) and blowers (26, 26a, 30, 30a) is circulated to each storage room (12, 13) The tableware (21) is heated to disinfect and dry, and the corresponding heaters (25, 29) are ON-OFF controlled based on the temperatures detected by the temperature sensors (31, 32, 33, 34) to disinfect and dry. A method of operating a disinfection storage that operates,
The plurality of storage rooms (12, 13) are spatially communicated, and when a temperature sensor (31, 32, 33, 34) corresponding to one of the storage rooms (12, 13) fails, the temperature sensor (31, 32, 33, 34) is out of order in the storage room (12, 13), the temperature sensor (31, 32, 33, 34) corresponding to the other storage room (12, 13) A method of operating a disinfection storehouse, characterized in that it is performed based on a detected temperature. Corresponding to each of the storage rooms (12, 13), there is a suction side of the air that heated the tableware (21) into the heaters (25, 29) and a blowing side of the heated air from the heaters (25, 29). A temperature sensor (31, 32, 33, 34) is provided for each,
When one temperature sensor (31, 32, 33, 34) provided corresponding to one of the storage rooms (12, 13) among the plurality of storage rooms (12, 13) fails, the temperature sensor (31, 32, 33, 34) in the storage room (12, 13) where the temperature sensor (31, 32, 33, 34) is not broken. Based on the temperature detected by temperature sensors (31, 32, 33, 34),
When both temperature sensors (31, 32, 33, 34) provided corresponding to one of the storage rooms (12, 13) out of the plurality of storage rooms (12, 13) fail, 2. The method of operating a disinfecting storage cabinet according to claim 1, wherein disinfecting and drying operations in the rooms (12, 13) are stopped. When one of the heaters (25, 29) and blowers (26, 26a, 30, 30a) corresponding to one storage room (12, 13) fails, the heater (25, 29) and the blower (26 , 26a, 30, 30a) stop the disinfection drying operation in the storage room (12, 13) in which one of them has failed,
For other storage rooms (12, 13) in which the heaters (25, 29) and blowers (26, 26a, 30, 30a) are not out of order, the corresponding temperature sensors (31, 32, 33, 34) detect 3. The method of operating a disinfecting storage cabinet according to claim 1 or 2, wherein the disinfecting/drying operation of ON-OFF controlling the heaters (25, 29) based on the temperature is continued. A temperature detected by a temperature sensor (31, 33) corresponding to a storage room (12, 13) in which one of the heaters (25, 29) and blowers (26, 26a, 30, 30a) has failed; 29) and the blower (26, 26a, 30, 30a) according to the temperature difference from the temperature detected by the temperature sensor (31, 33) corresponding to the storage room (12, 13) in which the blower (26, 26a, 30, 30a) is not out of order, 4. The method of operating a disinfection storehouse according to claim 3, wherein the disinfection drying time for performing the disinfection is variable. a first operation mode in which the tableware (21) is disinfected and dried in each of the plurality of storage rooms (12, 13); It is set to be switchable to a second operation mode that performs a disinfection drying operation of
When switching to the second operation mode, the state of communication between the storage chamber (12, 13) in which the disinfection/drying operation is performed in the second operation mode and the other storage chambers (12, 13) in which the disinfection/drying operation is not performed is changed. 5. The method for operating a disinfecting storage cabinet according to any one of claims 1 to 4, wherein the disinfecting and drying operation is performed by blocking.

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