JP6946014B2 - Disinfection storage and its operation method - Google Patents

Description

The present invention, sterilization depot storing articles such as tableware performing disinfection and drying by hot air after washing and relates its method of operation.

After washing, wet dishes are placed in a tableware basket and placed on a ventilation shelf, and hot air is circulated in the chamber to disinfect and dry the dishes, and then the disinfection storage is stored in hospitals and other places. It is used in school lunch facilities and other large restaurants. This is because in a large kitchen facility where you do not have time to naturally dry the washed dishes or wipe them manually, hot air may be circulated in contact with the wet dishes and remain after the moisture evaporates. It is a facility that disinfects certain germs and dries them at high temperature to provide clean tableware.

Since the present invention relates to the achievement of an economical operation method of the disinfection storage, the schematic configuration of the disinfection storage and the conventional operation process will be described first. FIG. 1 is an exploded perspective view of a general disinfection storage, and FIG. 2 is a vertical front view of the disinfection storage shown in FIG. The partition walls 16 shown in FIG. 1 are housed inside the vertically long rectangular parallelepiped housing 10 at intervals, and as shown in FIG. 2, the hot air circulation path 12 outside the partition walls is inside the housing 10. It is separated into the article storage chamber 14 inside the partition wall. In the article storage chamber 14, ventilation shelves 34 shown in FIGS. 1 and 2 are horizontally arranged in multiple stages at required intervals, and a ventilation basket 36 for storing tableware 39 is placed on the ventilation shelves 34.

An electric heater 18 and a sirocco fan 38 of the fan motor 20 are arranged between the inside of the top plate 26 in the housing 10 and the outside of the horizontal portion in the partition wall 16, and the temperature of the hot air circulation path 12 is high. The hot air can be circulated and supplied.

As shown in FIG. 2, the lower part of the article storage chamber 14 is completely opened, and the hot air generated by the heater 18 and the fan motor 20 is passed through the hot air circulation path 12 to the article storage chamber 14. It is a hot air inlet 22 to be introduced into. Further, as shown in FIGS. 1 and 2, a circular hot air outlet 24 is provided in the horizontal portion 16a of the partition wall 16, and the hot air introduced into the article storage chamber 14 is introduced to the hot air outlet 24. It can be discharged to the hot air circulation path 12 through the hot air circulation path 12. As shown in FIG. 1, a net 40 of a required mesh may be stretched at the hot air outlet 24.

As shown in FIG. 1, a rectangular discharge port 28 is provided on the top plate 26 of the housing 10 so as to communicate with the hot air circulation path 12 via the discharge port 28. As shown in FIGS. 1 and 2, a square tubular duct 32 is provided on the top plate 26 in line with the discharge port 28, and the duct 32 communicates with the discharge port 28. As shown in FIG. 2, a rectangular plate-shaped shutter 30 is pivotally supported inside the duct 32 so that the discharge port 28 can be opened and closed by the shutter 30. The shutter 30 is connected to the solenoid 42 shown in FIG. 2 via a plunger, and is driven to open and close by the solenoid 42. That is, the hot air generated by the heater 18 and the fan motor 20 flows into the article storage chamber 14 through the hot air inlet 22 and then flows out from the hot air outlet 24 and circulates in the hot air circulation path 12. do. Then, when the shutter 30 of the duct 32 is opened, the hot air in the article storage chamber 14 is discharged to the outside through the discharge port 28 and the duct 32. Further, the front opening opened to the housing 10 of the disinfection storage is closed by two doors 48 so as to be openable and closable.

FIG. 9 is a block diagram showing an outline of the electrical control system of the disinfection storage shown in FIGS. 1 and 2. The heater 18 and the fan motor 20 are connected to a controller board 56 provided on the control panel 46 shown in FIG. 1 via a relay box 45. Further, the solenoid 42 that drives the opening and closing of the shutter 30 is connected to the controller board 56. Further, the temperature sensor 50 and the humidity sensor 52, which will be described later, are connected to the controller board 56 and constantly input their respective detection values. Then, various commands by the user are instructed to be input to the controller board 56 by operating the operation label 60 shown in FIG.

Next, each operation stage of the disinfection storage shown in FIG. 2 will be described with reference to the timing chart of FIG. The vertical axis of FIG. 3 shows the ON / OFF state of the heater 18 and the fan motor 20, and the open / closed state of the shutter 30 in the duct 32, and the horizontal axis shows the operating state with the passage of time. In FIG. 3, when the disinfection storage is energized, the temperature raising operation is started, the energization of the heater 18 and the fan motor 20 is turned on, and hot air is circulated in the direction of the arrow in FIG. 2 to raise the temperature inside the refrigerator. Further, since the solenoid 42 is not energized, the shutter 30 of the duct 32 keeps the discharge port 28 closed. As shown in FIG. 2, a first temperature sensor 50 represented by a thermistor is provided in the space where the heater 18 and the fan 38 are arranged and in the vicinity of the hot air outlet 24, and the hot air circulation. A second temperature sensor 50 is provided on the road 12, and changes in the temperature inside the refrigerator are monitored by these temperature sensors 50 and 50.

When the temperature sensor 50 detects a predetermined temperature rise in the refrigerator, the controller board 56 switches to intermittent energization for turning the heater 18 on and off, thereby shifting to a disinfection operation. During this disinfection operation, the heater 18 is continuously energized and the fan motor 20 is energized, but the duct 32 is still closed. This is to keep the steam filling the article storage chamber 14 in the refrigerator without letting it escape, and to efficiently disinfect the tableware 39 in the ventilation basket 36 by the moist heat effect.

After the temperature inside the refrigerator reaches the set value and the temperature raising operation is completed, the heater 18 is turned on and off for a preset time to control by the set temperature. That is, after reaching the set temperature, the countdown of the set time is started, for example, the disinfection operation is completed in 15 minutes, and the operation is switched to the next drying operation. When this disinfection operation is completed, as shown in FIG. 3, the duct 32 is opened and the hot air in the refrigerator is discharged from the discharge port 28 to the outside air. However, since the heater 18 continues to be energized intermittently on and off, and the fan motor 20 is also continuously energized (ON), the disinfected tableware 39 in the refrigerator is thoroughly dried. When the set time being counted down is increased, the energization of the heater 18 is turned off, and in order to lower the temperature of the heater 18, for example, a one-minute cool-down operation is started. When this one minute elapses, the energization of the fan motor 20 is turned off, and the duct 32 (shutter 30) is also closed to end the cool-down operation.

Japanese Unexamined Patent Publication No. 2005-95642

As explained earlier, in the conventional disinfection storage, the disinfection operation and the drying operation are continued for a preset time, and each operation is performed regardless of the state of the load (tableware) stored in the storage. Since it is performed, the power consumption consumed for the heater and the fan motor is large and uneconomical. Further, since the cool-down operation is only for lowering the temperature of the heater 18, the tableware 39 may not be sufficiently cooled even after the cool-down operation is completed. For this reason, there is also the inconvenience that the user touches the tableware and gets burned immediately after the end of the cool-down operation.

The present invention has been proposed to solve the above-mentioned drawbacks inherent in the conventional disinfection storage, and has introduced the state of tableware, which is a load of disinfection and drying, as a control index for disinfection and drying operation. It is a thing.

The invention according to claim 1 for solving the above-mentioned problems and achieving the intended object.
A partition wall that separates the inside of the housing into an outer hot air circulation path and an inner article storage chamber, and a heater that is disposed between the housing and the partition wall and circulates and supplies hot air to the hot air circulation path. A fan motor, a hot air inlet that is located below the article storage chamber and introduces hot air flowing through the hot air circulation path into the article storage chamber, and a hot air inlet that is opened in the partition wall to the article storage chamber. It consists of a hot air outlet that allows the introduced hot air to flow out to the hot air circulation path, and a duct that opens and closes a discharge port that is opened on the top plate of the housing and communicates with the hot air circulation path by a shutter. In the disinfection storage
The temperature raising operation for energizing the heater and the fan motor is started with the duct closed, and when the article storage chamber reaches the required set temperature, the disinfection operation for intermittently energizing the heater is started. When the disinfection operation is completed, the duct is switched to the open state to start the drying operation, and when the drying operation is completed, the heater is switched to stop the energization of the fan motor and the duct. Equipped with a control means to control the cool-down operation that keeps the air open for a set time.
The control means, in that it comprises means for changing means for changing the operation time of the disinfecting operation and the drying operation separately, and the inside temperature of the sterilization operation and the drying operation separately It is a summary.
According to the invention of claim 1, since not only the time but also the temperature inside the refrigerator is used as the control index of the disinfection operation in step 1 and the drying operation in step 2, the processing is performed during the disinfection operation and the drying operation. The temperature can be changed. Further, it is possible to heat at a high temperature in the initial stage and lower the temperature in the middle, or conversely, start the treatment at a low temperature in the initial stage and raise the temperature in the latter half to disinfect, and the power consumption can be suppressed.

The gist of the invention according to claim 2 is that the temperature inside the refrigerator in the disinfection operation and the drying operation is set based on the temperature detected by the temperature sensors arranged at the hot air inlet and the hot air outlet, respectively. ..
According to the invention of claim 2, since the temperature inside the refrigerator is detected by the two temperature sensors, more accurate control index data can be obtained.

In the invention according to claim 3, when the end time of both operations through the disinfection operation and the drying operation is set, the operation time required for the disinfection operation and the drying operation and the inside of the refrigerator are controlled by the control means. The gist is that the temperature is automatically calculated and the time and temperature suitable for each of the disinfection operation and the drying operation are set.
According to the invention of claim 3, the temperature and time of steps 1 and 2 can be automatically set by setting the end time through the disinfection operation of step 1 and the drying operation of step 2, so that the consumption The drying process at a high temperature with a large amount of power can be minimized, and the running cost can be suppressed.

In the invention according to claim 4 , after setting the total time required for the disinfection operation and the drying operation, the time required for the disinfection operation and the drying operation and the storage within the range of the total time are controlled by the control means. The gist is that the optimum time and temperature are set by calculating the internal temperature respectively.
According to the invention of claim 4 , by setting the total time of the disinfection operation of step 1 and the drying operation of step 2, the temperature and time required for disinfecting and drying the tableware are calculated, and the temperature and time required for disinfecting and drying the tableware are calculated. The temperature and set time of 2 are automatically set. Therefore, for example, the treatment at 80 ° C. required for disinfection must ensure a certain period of time, and if the total time is short, the drying time at high temperature is long, and conversely, if the total time is long, the temperature is 50 ° C. Appropriate operation is achieved by taking a long drying time at a relatively low temperature of about 60 ° C.

In the invention according to claim 5 , the drying state of the article stored in the article storage chamber is monitored by a humidity sensor, and each drying time in the disinfection operation and the drying operation is changed according to the degree of drying of the article. The gist is that it is.
According to the invention of claim 5 , the time required for the disinfection operation and the drying operation is automatically set from the dry state of the tableware or the like in the refrigerator. Therefore, since the set time in each operation can be changed, the time for the disinfection operation and the drying operation at a high temperature can be shortened, and the running cost can be reduced.

In the invention according to claim 6 , the set temperature in the disinfection operation is set higher than the set temperature in the drying operation, and the time required for the disinfection operation and the drying operation is automatically set according to the load amount of the article. The gist is that it is set.
According to the invention of claim 6 , the time of each operation can be set according to the amount of the load in the refrigerator, and the running cost can be kept low.

The gist of the invention according to claim 7 is that the index of the load amount of the article is the amount of the article and the degree of drying.

The gist of the invention according to claim 8 is that the amount of the article is determined by a weight sensor.

The gist of the invention according to claim 9 is that the amount of the article is determined by an optical sensor or an image sensor.

According to the present invention, since the temperature inside the refrigerator is used together with the time as a control index for the disinfection operation and the drying operation, the operation time can be shortened according to the load condition in the refrigerator, and therefore running. The cost can be kept low.

It is an exploded perspective view of the disinfection storage. It is a longitudinal front view of the disinfection storage shown in FIG. FIG. 2 is a timing chart of the disinfection storage shown in FIG. 2, showing the status of each operation stage. It is an exploded perspective view of another example which is the front panel used for the disinfection storage shown in FIG. 1 and also has the function of a control panel. It is an exploded perspective view which observed the front panel as another example shown in FIG. 4 from the back side. It is a plan view of a small specification in the disinfection storage shown in FIG. 1, and the inside of the machine room can be observed by partially cutting out the top cover. It is a plan view which shows the main part of FIG. 6, and the position of a relay box is changed in order to give a chimney effect. FIG. 6 is a side view of the upper main part of the small-sized disinfection storage shown in FIG. 6, showing a state in which the top surface of the relay box is in contact with the top panel. It is a block diagram of the electric control system of the disinfection storage shown in FIG.

Next, the operation method of the disinfection storage according to the present invention will be described below with reference to suitable examples. The disinfection storage to which the operation method of the present invention is applied is basically the content described with respect to FIGS. 1 to 3. Therefore, only the contents different from the basic structure and operation method of the disinfection storage described above will be mainly described.

In the operation method of this embodiment, in the disinfection operation (referred to as step 1) and the drying operation (referred to as step 2) after the temperature rise operation shown in FIG. 3, "time" and "storage" are used as control indexes (parameters). "Internal temperature" is also used. Further, in the cool-down operation (referred to as step 3), only "time" is used as the control index. In this step 3 (cool-down operation), not only the temperature of the heater 18 is lowered, but also the time required to sufficiently cool the tableware 39, which is a load in the refrigerator, is secured. That is, when the operation of the disinfection storage is started, the temperature raising operation shown in the time chart of FIG. 3 is started, and the heater 18 and the fan motor 20 are energized (ON). However, the shutter 30 of the duct 32 remains closed. As a result, the hot air generated by the heater 18 and the fan motor 20 circulates in the hot air circulation path 12, and gradually raises the temperature inside the article storage chamber 14. When the temperature sensor 50 (described later) detects that the temperature has reached a preset temperature as the temperature inside the refrigerator rises, the controller board 56 provided on the control panel 46 issues a command to end the temperature raising operation, and the temperature rise operation is completed. The operation is switched to the disinfection operation of step 1 in which the heater 18 is turned on and off intermittently.

In this step 1, the heater 18 is turned on and off intermittently as described above, but the fan motor 20 is continuously energized and the shutter 30 of the duct 32 is also continuously closed. .. Therefore, the article storage chamber 14 is filled with steam evaporated from the tableware 39 by the hot air in a high temperature state, so that sufficient heat disinfection of the tableware 39 is achieved.

By the way, in this embodiment, "time" and "internal temperature" are used together as a control index for completing step 1. That is, in the disinfection operation of step 1, the time required to complete the operation and the internal temperature required for complete disinfection of the tableware 39 in the article storage chamber 14 are set in advance. Incidentally, the time setting and the temperature setting are performed by operating the control panel 46 shown in FIG. Then, in step 1, the disinfection operation of step 1 is completed when either the preset time or the preset internal temperature arrives first. As described above, in this embodiment, as compared with the case where only "time" is used as the control index, when the internal temperature required for disinfection is reached even if the set time has not yet arrived, the disinfection in step 1 is performed. The operation can be ended and the operation can be switched to the drying operation of the next step 2.

Next, the operation mode of step 2 (drying operation) is also the same as the operation mode of step 1 (disinfection operation) described above, and "time" and "internal temperature" are used together as the control index of the step 2. Will be done. That is, when the disinfection operation of step 1 is completed, the process proceeds to the drying operation of step 2. In this step 2, as shown in FIG. 3, the intermittent operation of turning on / off the energization of the heater 18 and the energization (ON) of the fan motor 20 are continued, and the hot air circulating in the tableware 39 of the article storage chamber 14 is continued. Forcibly dry. However, the shutter 30 of the duct 32 is opened, and the hot steam filled in the refrigerator is discharged from the duct 32 to the outside air. Further, in the drying operation of step 2, the time required to finish the operation and the temperature inside the article storage chamber 14 are set in advance. Then, in step 2, the drying operation of step 2 is completed when either the preset time or the preset internal temperature arrives first. As described above, in step 2, even if the time set as expected for the drying operation has not yet arrived, when the temperature inside the tableware 39 required for sufficiently drying the tableware 39 is reached, the drying in step 2 is performed. The operation can be ended and the operation can be switched to the cool-down operation of the next step 3.

When the cool-down operation of step 3 is entered, the energization of the heater 18 is completely cut off (OFF), the energization of the fan motor 20 (ON) and the opening of the shutter 30 in the duct 32 are continued for the required time. When the time is increased, the cool-down operation is terminated. In this step 3, not only the time required to lower the temperature of the heater 18 whose energization is intermittently turned on and off, but also the tableware 39 stored in the refrigerator is dissipated and the user's handling is not hindered. The time to drop to temperature is set.

As described above, in this embodiment, even in the middle of step 1 (disinfection operation) and / or step 2 (drying operation), the mode in which the internal temperature is prioritized can be set without being caught by the set time. .. By using this time and the temperature inside the refrigerator as control parameters, for example, hot air is circulated in the refrigerator at a high temperature in the initial stage through the operations of steps 1 and 2, and the temperature inside the refrigerator is lowered in the middle. Economical drying operation can be achieved with reduced power consumption to the heater 18. On the contrary, by circulating hot air at a relatively low temperature in the initial stage and raising the temperature in the latter half, it is possible to ensure drying as well as disinfection. The temperature inside the refrigerator in the disinfection operation and the drying operation is based on the temperature detected by the temperature sensor 50, which is arranged at the hot air inlet 22 and the hot air outlet 24, respectively, and electronically detects a change in the electric resistance value, for example. Is set.

Since the above-mentioned time and internal temperature parameters can be freely set, it is possible to perform only time-controlled operation at a constant temperature as in the conventional case. Further, the cool-down operation performed after the disinfection operation in step 1 and the drying operation in step 2 not only cools the heater 18, but also allows the fan motor 20 to sufficiently dissipate heat until the tableware 39 stored in the refrigerator is sufficiently dissipated. Energization and opening of the duct 32 are continued. Therefore, even if the user touches the disinfected and dried tableware 39 immediately after the operation of the disinfection storage is completed, it is safe without being burned.

(About change example)
The method of operating the disinfection storage according to the above-described embodiment is the basic process of the present invention. However, various changes to the operation method of the disinfection storage are proposed by combining various parameters such as time, temperature inside the refrigerator, and the load inside the tableware, etc., and each change example will be described below.

(Change example 1)
When adopting the operation method of the disinfection storage according to the first embodiment described above, by setting the end time between the disinfection operation in step 1 and the drying operation in step 2, the time suitable for each of the disinfection operation and the drying operation is set. And the temperature inside the refrigerator may be calculated and set automatically. That is, the temperature and time inside the tableware required for complete disinfection and drying of the tableware 39, which is the load inside the tableware stored in the article storage chamber 14, are determined by the controller board 56 in which the optimum past experience value is stored. The temperature and time in step 1 (disinfection operation) and step 2 (drying operation) are finally set according to the calculated data.

In this case, it is preferable that the set temperature is prioritized over the set time in the disinfection operation of step 1 and the set time is prioritized over the set temperature in the drying operation of step 2. Or vice versa. For example, for the treatment at the internal temperature of 80 ° C. required for tableware disinfection in step 1, the disinfection operation must be continued for a certain period of time, and if the set time arrives early, the drying time at high temperature should be long. .. Further, when the end time in step 1 is late (continues for a relatively long time), the drying time can be long in step 2 at a relatively low internal temperature such as 50 ° C. or 60 ° C. In this way, by setting the overall end time and adding the function to automatically set the temperature and time in steps 1 and 2, the drying time at high temperature (high power consumption) is minimized. It is possible to reduce the running cost.

(Change example 2)
When adopting the operation method of the disinfection storage according to the first embodiment described above, by setting the total time of the disinfection operation of step 1 and the drying operation of step 2, the time suitable for each of the disinfection operation and the drying operation is set. And the temperature inside the refrigerator may be calculated and set automatically. That is, the temperature and time inside the tableware required for complete disinfection and drying of the tableware 39, which is the load inside the tableware stored in the article storage chamber 14, are determined by the controller board 56 in which the optimum past experience value is stored. The temperature and time in step 1 (disinfection operation) and step 2 (drying operation) are finally set according to the calculated data.

In this case, it is preferable that the set temperature is prioritized over the set time in the disinfection operation of step 1 and the set time is prioritized over the set temperature in the drying operation of step 2. Or vice versa. For example, in the treatment at the internal temperature of 80 ° C. required for tableware disinfection in step 1, the disinfection operation is always ensured for a certain period of time, and when the total time is short, the drying time at high temperature is long. Further, when the total time is long, in step 2, the drying time can be long at a relatively low internal temperature such as 50 ° C. or 60 ° C. In this way, by adding the function to automatically set the temperature and time in steps 1 and 2, the drying time at high temperature (high power consumption) can be minimized and the running cost can be reduced. It is possible to make it.

(Change example 3)
Inside the article storage chamber 14 shown in FIG. 2, for example, a resistance change type electronic humidity sensor 52 is arranged in the vicinity of the hot air outlet 24 provided in the horizontal portion 16a of the partition wall 16. The humidity sensor 52 monitors the humidity (wet state or wet state of the tableware 39) in the internal atmosphere of the article storage chamber 14 and inputs humidity information to the controller board 56. Then, each drying time in the disinfection operation in step 1 and the drying operation in step 2 is modified and changed according to the degree of drying (humidity condition) of the tableware 39. As a result, the time for disinfecting and drying the heater 18 by energizing it at a high temperature, and the total operating time of both steps 1 and 2 can be effectively shortened, so that the power consumption can be suppressed and the running cost can be improved.

(Change example 4)
In the operation method of the disinfection storage described in the first embodiment, the following operation mode may be set. That is, the set temperature in the refrigerator in the disinfection operation in step 1 is set higher than the set temperature in the drying operation in step 2 for operation. In addition, since the number of tableware 39 stored in the disinfection storage may be large or relatively small, the quantity of tableware 39 (and thus the ventilation basket 36) as an internal load varies depending on the operation. be. Therefore, the load state of the washed tableware 39 stored in the refrigerator is determined, and the determination result (the degree of the wet state of the tableware 39, the weight and amount of the tableware 39 (and the ventilation basket 36)) is determined. It is input to the controller board 56 as a correction parameter of the set time.

In this case, the quantity (quantity) of the tableware 39 and the degree of drying can be adopted as an index indicating the load amount of the tableware 39. Thereby, the time required for step 1 (disinfection operation) and the time required for step 2 (drying operation) can be automatically set according to the load amount of the tableware 39. The load amount of the tableware 39 can be determined, for example, by using the rate of increase in the temperature inside the tableware (v / h) after the start of operation of the disinfection storage as an index. In this case, if the amount of the load inside the tableware is large, including the wet state of the tableware 39, the temperature inside the tableware rises slowly, so this index should also be input to the controller board 56 and set. It can be reflected in the operating time. Here, the load amount of the tableware 39 (and the ventilation basket 36) may be determined by, for example, determining the total weight by a weight sensor (not shown) arranged in the refrigerator as an index. It is recommended that the weight sensor be provided on the facing inner wall surfaces of the article storage chamber 14 and arranged on a support piece (not shown) that supports the ventilation basket 36. Further, the load amount (for example, quantity) in the tableware 39 is grasped as light and dark or an image by an optical sensor or an image sensor (neither shown) provided in the refrigerator, and the obtained data is used as a correction parameter. It may be input to the controller board 56.

Two front panels are used on the upper front surface of the disinfection storage shown in FIG. That is, the control panel 46 described above in FIG. 1 and the front panel 54 arranged horizontally above the control panel 46 are the same. The reason why the front panel is made up of two members in this way is that the upper front panel 54 secures the strength of the front surface of the housing 10, and the lower front panel 46 is affixed with an operation label 60 for operation. It is to function as a control panel. In particular, the control panel 46 may have its inner controller board 56 replaced due to a change in specifications, but even if the control panel 46 is removed, the upper front panel 54 is present, which causes a decrease in the strength of the housing. Never. In addition, since the inside of the disinfection storage becomes hot due to the circulation of hot air, the lower control panel 46 is painted red in order to give the user an impression of high temperature caution. However, by using two members for the front panel, the number of types of members increases, management becomes complicated, and there is a drawback that the cost increases due to painting. Further, water or the like may enter from the joints of the two panels 46 and 54 adjacent to each other on the upper and lower sides to damage the inner controller board 56, and there is also a problem that a member for sealing the inner controller board 56 is required.

Therefore, as shown in FIGS. 4 and 5, it has been proposed that one front panel 58 is combined to secure the strength of the front surface of the housing 10, and that the front panel 58 is also provided with a function as a control panel. NS. As a result, the number of parts on the front panel can be reduced, and the seams existing on the divided panels are eliminated, so that water can be prevented from entering the controller board 56 inside. In addition, since dust does not clog the seams, cleanability is improved. In order to visually impress the user with high temperature caution, a red operation label 60 is used for the operation label 60 attached to the front panel 58.

The disinfection storage shown in FIG. 1 has large and small specifications, but in the case of a large size, the control panel is attached at a considerably high position (for example, the floor height is 1700 mm). Moreover, since the control panel is arranged perpendicular to the floor, it is difficult for a small user to operate and check the display. Therefore, as shown in FIGS. 4 and 5, the front surface of the front panel 58 is integrally molded with the vertical surface 58a and the inclined surface 58b slightly inclined inward under the vertical surface 58a, and the inclined surface is formed. Make 58b function as a control panel. As a result, even a small user can improve the operation of the front panel 58 and the visibility of the display.

As described above, the controller board 56 is attached to the back side of the control panel 46 shown in FIG. 1, but both members 46 and 56 are fixed by rivets. Therefore, in order to replace the controller board 56, the control panel 46 must be removed from the housing 10, and the replacement work is complicated and inconvenient. Therefore, as shown in FIG. 4, the first bracket 62 is attached to the inclined surface 58b on the back side of the front panel 58 by spot welding or the like, and the second bracket 64 is attached to the front surface of the controller board 56. The second bracket 64 is arranged in front of the control box 72 that houses the controller board 56. Then, the second bracket 64 of the controller board 56 is attached to the first bracket 62 on the back side of the front panel 58 via the screw 66. Therefore, the controller board 56 can be attached and detached and replaced without removing the front panel 58, and workability is improved.

As shown in FIG. 1, a fan motor 20, a duct 32, and other relay boxes 45 are arranged on the top plate 26 of the disinfection storage. A heater 18 serving as a large heat source is arranged on the back side of the top plate 26, and the duct 32 discharges hot air in the refrigerator to the outside air by opening the shutter 30. Therefore, the surroundings of the relay box 45, which is vulnerable to heat, have a high temperature atmosphere. In this case, in the short and small disinfection storage, the machine room 68 defined between the top cover 70 and the top plate 26 becomes narrow. Therefore, although the top cover 70 is provided with a through hole for heat dissipation, heat tends to be trapped inside the machine room 68 and the temperature tends to be high. Therefore, the relay box 45 arranged in the machine room 68. The temperature will rise. Since various electric components that are generally susceptible to heat are housed in the relay box 45, such a temperature rise is not preferable. In particular, since a part of the front panel 54 (see FIG. 1) on the upper side of the front frame of the housing 10 faces the inside of the disinfection storage, although a heat insulating material is provided inside, the temperature tends to rise. , This heat is transferred to the machine room 68.

Therefore, as shown in FIG. 7, the relay box 45 is inserted into the concave recessed portion 74 formed in the control box 72 (the controller board 56 is housed therein) arranged on the back side of the front panel 54. It was moved, and a gap space G of about 10 mm was provided between the recess 74 and the relay box 45. FIG. 8 shows this state as a longitudinal enlarged side surface. That is, by providing a gap G extending vertically upward between the concave recess 74 of the control box 72 and the relay box 45, the high-temperature air rises the gap G due to the so-called chimney effect, and the heat dissipation effect is achieved. Will be done. As shown in FIG. 8, it is preferable to provide a plurality of ventilation holes 76 in the relay box 45. Further, the height of the relay box 45 may be increased so that the top plate of the relay box 45 is brought into contact with the top cover 70 of the machine room 68 so that the top cover 70 functions as a heat radiating plate. good.

10 housings, 12 hot air circulation paths, 14 article storage rooms, 16 bulkheads, 18 heaters,
20 fan motor, 22 hot air inlet, 24 hot air outlet, 26 top plate,
28 outlet, 30 shutter, 32 duct, 39 tableware (article),
50 temperature sensor, 52 humidity sensor

Claims (9)

A partition wall (16) that separates the inside of the housing (10) into an outer hot air circulation path (12) and an inner article storage chamber (14), and the housing (10) and the partition wall (16). A heater (18) and a fan motor (20) that circulate and supply hot air to the hot air circulation path (12) arranged between them, and the hot air circulation path (14) located below the article storage chamber (14). The hot air inlet (22) that introduces the hot air flowing through 12) into the article storage chamber (14) and the hot air that is opened in the partition wall (16) and introduced into the article storage chamber (14). A hot air outlet (24) that flows out to the hot air circulation path (12) and an outlet (28) that is opened on the top plate (26) of the housing (10) and communicates with the hot air circulation path (12). , In a disinfection storage consisting of a duct (32) that can be opened and closed by a shutter (30).
When the temperature raising operation for energizing the heater (18) and the fan motor (20) is started with the duct (32) closed and the article storage chamber (14) reaches a required set temperature, the heater The disinfection operation in which the energization of (18) is intermittently performed is started, and when the disinfection operation is completed, the duct (32) is switched to the open state to start the drying operation, and when the drying operation is completed, the heater A control means (56) for controlling the fan motor (20) to be turned off and the cool-down operation for continuing the energization of the fan motor (20) and the opening of the duct (32) to be performed for a set time by switching to stop the energization of (18). Prepare,
Wherein said control means (56) is provided with means for changing means for changing the operation time of the disinfecting operation and the drying operation separately, and the inside temperature of the sterilization operation and the drying operation separately Disinfection storage characterized by being. The first aspect of the present invention, wherein the temperature inside the refrigerator in the disinfection operation and the drying operation is set based on the temperature detected by the temperature sensors (50) arranged at the hot air inlet (22) and the hot air outlet (24), respectively. How to operate the disinfection storage. When the end time of both operations through the disinfection operation and the drying operation is set, the operation time required for the disinfection operation and the drying operation and the temperature inside the refrigerator are automatically calculated by the control of the control means (56). The operation method of the disinfection storage according to claim 1, wherein the time and temperature suitable for each of the disinfection operation and the drying operation are set. After setting the total time required for the disinfection operation and the drying operation, the time required for the disinfection operation and the drying operation and the temperature inside the refrigerator are calculated within the range of the total time by the control of the control means (56). The method of operating the disinfection storage according to claim 1, wherein the optimum time and temperature are set. The humidity sensor (52) monitors the dry state of the article (39) stored in the article storage chamber (14), and changes each drying time in the disinfection operation and the drying operation according to the degree of drying of the article (39). The operation method of the disinfection storage according to claim 1. The set temperature in the disinfection operation is set higher than the set temperature in the drying operation, and the time required for the disinfection operation and the drying operation is automatically set according to the load amount of the article (39). The method of operating the disinfection storage according to claim 1. The operation method of the disinfection storage according to claim 6, wherein the index of the load amount of the article (39) is the amount and the degree of drying of the article (39). The operation method of the disinfection storage according to claim 7, wherein the amount of the article (39) is determined by a weight sensor. The operation method of the disinfection storage according to claim 7, wherein the amount of the article (39) is determined by an optical sensor or an image sensor.

Images