JP5168723B2 - Sealed container - Google Patents

Description

  The present invention relates to a sealed container, and more particularly to control of opening and closing a door.

  As a sealed container (which may be collectively referred to as a processing device) for sealing and disinfecting, sterilizing, cleaning, or cooling the object to be processed in a large container, a door having a clutch lock mechanism (Patent Document) 1), there is a device formed by a shutter type hermetic door (Patent Document 2) and a lateral sliding door (Patent Document 3). Most processing apparatuses having these door mechanisms are provided with an automatic opening / closing mechanism by a driving device, and opening / closing operations are performed by door operation buttons.

  In such a large processing apparatus, when carrying out loading work in the processing apparatus, loading / unloading of an object to be processed, and inspection or repair of the inside of a container, it is necessary for a person to directly enter the work.

  In the processing apparatus, for the purpose of processing the object to be processed, the door is sealed and the inside of the processing apparatus is depressurized and then pressurized with high-temperature steam. A process such as supplying a sterilizing gas or showering with high-temperature water, or a process of reducing the pressure inside the processing apparatus and boiling the object to be processed under reduced pressure to perform rapid cooling. For this reason, it is important for safety to prevent the processing operation from being started by sealing the container body while a person is working inside the container body.

Japanese Patent Laid-Open No. 9-14445 Japanese Patent Laid-Open No. 11-342963 JP 2001-212213 A

  In the above-mentioned conventional closed container, in order to ensure the safety of the operator in the container body from the door closing operation of the processing apparatus, a chain or string-like thing is arranged in the width direction of the opening with the door opened. There is a method to indicate that a person is working inside the container body by suspending a tag that is marked as `` working '' etc. There was a danger that a third party overlooked it and that the bill was removed and it was not understood.

  For this problem, as a configuration of the sealed container for preventing the processing operation from starting, in order to ensure the safety of the worker entering the container body, a power switch is provided with a key (Patent Documents 5 and 6), In a processing apparatus that may be dangerous if the door is opened during the processing operation, a method (Patent Document 4) is known in which the power of the apparatus is shut off when the door is opened.

  By the way, in the processing apparatus, particularly in a processing operation that requires a predetermined temperature for processing, the processing operation cannot be started immediately even when the power is turned on. For this reason, in the said processing apparatus, a preparatory driving | operation is required before a process start. The preparatory operation refers to, for example, an operation for raising (or lowering) the temperature of the container body to a predetermined temperature when a predetermined temperature is required as a processing condition. The container body of the processing apparatus used for processing requiring a predetermined temperature usually has a structure in which a peripheral wall of the container is surrounded by a heat medium introduction space forming part called a jacket so that a heat medium fluid can be introduced. A container is used. In such a preparatory operation of the processing apparatus, a heat transfer fluid is introduced into the jacket and heated or cooled to a predetermined temperature. Similarly, the door of the processing apparatus is heated or cooled to the same temperature. When the preparatory operation of the processing apparatus is completed, the processing apparatus enters a standby state in which control for maintaining the temperature is performed so that the processing operation can be started immediately.

  However, in the methods of Patent Documents 4 to 6, since the power supply itself is shut off, there is a problem that the preparation operation is reset and the preparation operation must be performed again.

JP 59-91960 A JP 2002-102315 A JP 2003-275284 A

  Therefore, the present invention has been made to solve these problems, and the object of the present invention is to carry out the work in and out of the container in the container main body, and the incidental attached to the container main body or the container main body. By ensuring the safety of people entering the container body for repairs and inspections of parts and doors, it is possible to carry out processing operations promptly after the work is carried out and carried in, and after repairs and inspections are completed. is there.

  This invention was made in order to solve the said subject, and the invention of Claim 1 is a container main body which has an opening part, the door which opens and closes the said opening part, and the said door for the opening and closing of the said door A driving device for driving, a door operation switch for controlling the driving device, a processing means for performing a predetermined process on the workpiece in the container body, and a predetermined preparatory operation before a processing operation by the processing means. A closed container provided with a preparatory operation means for performing the preparatory operation and a control means for controlling the preparatory operation and the processing. In the state where the blocking means is turned on, the energization to the drive device is cut off to prevent the door closing control by the door closing operation switch, and the control means continues to control the preparatory operation means. Specially It is set to. Here, the “state in which the door closing control blocking means is turned on” means a state in which the door closing control by the door closing operation switch is blocked.

  According to the first aspect of the present invention, an operator entering the container body turns on the door closing control blocking means, so that a third person accidentally closes the door and the sealed container is Since the sealing can be prevented, the work can be safely performed in the container body without turning off the power of the processing apparatus.

  Furthermore, in the invention according to claim 1, since the control of the preparatory operation of the processing apparatus is continued, the processing operation can be started immediately after the work is completed.

  According to a second aspect of the present invention, the door closing control preventing means is configured to include a detachable key and a contact provided in a power circuit of the driving device, and the door closing control preventing means is turned on. By removing the key from the door closing control blocking means, the door closing control blocking means is maintained in the ON state, the contact is turned OFF, and the energization cutoff state to the drive circuit is maintained, and the key By inserting and turning off the door closing control blocking means, the contact is turned on to allow the drive device to be energized.

According to a second aspect of the present invention, in the sealed container according to the first aspect, the door closing control preventing means includes a key that can be inserted and removed and a contact provided in an energization circuit of the driving device. The door closing control blocking means is turned ON and the key is removed from the door closing control blocking means, so that the door closing control blocking means is maintained ON and the contact is turned OFF to the drive device . Is maintained, and the contact is turned on by inserting the key and turning off the door closing control prevention means, thereby enabling the drive device to be energized.

According to a third aspect of the present invention, in the sealed container according to the first aspect, the door closing control preventing means receives a recording medium, a recording medium recognizing device, and a signal from the recording medium recognizing device. Control means for controlling the opening and closing of the contacts provided in the energization circuit to the drive device, the control means when the door closing control blocking means is turned on by the recording medium recognition device The contact is opened to prevent the door closing control by the door closing operation switch, and the preparatory operation control is continued.

  According to the third aspect of the present invention, in addition to the effect of the first aspect of the invention, the operator entering the container body makes the recording medium recognized so that the door closing control is performed. Since the blocking means is turned on, it is possible to prevent a third party from accidentally closing the door and sealing the sealed container. For this reason, it is possible to work safely in the container body without turning off the power of the sealed container.

  According to this invention, by turning on the door closing control blocking means, it is possible to prevent an accident caused by starting the sealing operation and the processing operation of the container body for the worker in the container body, Even when the door closing control blocking means is in the ON state, the preparatory operation is continued, so that the processing operation can be quickly performed by releasing the door closing control blocking means.

  Next, an embodiment of the present invention will be described. Embodiments of the apparatus of the present invention include a steam sterilizer, an ethylene oxide gas sterilizer, a vacuum cooling device, a retort processing device, an ultraviolet sterilizer, a formalin disinfector, an ozone sterilizer, a smoked manufacturing device, and the like. This is performed in a sealed container that is sealed with a door and performs a predetermined process on an object to be processed in the container body. Predetermined treatment includes sterilization performed by reducing pressure and / or pressurizing, introducing sterilizing gas or disinfecting gas at reduced pressure and / or atmospheric pressure or / or pressure higher than atmospheric pressure, ultraviolet irradiation or hot water Spraying, cold air introduction, soot vapor body introduction, etc. are included.

  Below, the airtight container which implemented this invention is demonstrated in detail based on FIGS. 1-3 about a sterilization processing apparatus. Here, FIG. 1 is an explanatory view of the front of the sterilization apparatus according to the first embodiment of the present invention, FIG. 2 is a detailed view of a control operation unit in the first embodiment, and FIG. 3 is in the first embodiment. It is explanatory drawing of a door closing control prevention means.

  In FIG. 1, a sterilization apparatus (sealed container) 1 includes a container body 2, a door 3, a jacket 4 for introducing steam as a medium for indirectly heating the inside of the container body 2, and the door 3. The driving device 5 is configured to open and close, a control unit (not shown in FIG. 1) that controls the driving of the door 3, and a driving device power source 35 (not shown in FIG. 1) that supplies power to the driving device 5. . In the first embodiment, the control operation unit 6 is installed in close contact with the side of the sealed container 1, and the hot water circulation control means for heating the pressure reducing means 32, the sterilizing gas introducing means 34, and the jacket 4 of the sealing device 1. 33, the control unit for controlling the opening and closing of the door 3 and the like, and a driving operation screen 7 are provided. These components controlled by the control unit constitute a processing means of the present invention when a processing object is subjected to, for example, ethylene oxide gas sterilization processing operation, and a preparatory operation before performing the processing operation ( When performing (described later), the preparatory operation means of the present invention is configured. The control unit includes a microprocessor and a memory that stores a program for controlling the processing operation and the preparation operation.

  In FIG. 2, the control operation unit 6 includes the operation operation screen 7, a power switch 8, a door opening operation switch 26 and a door closing operation switch 27, a door operation switch 24, and a processing operation start switch 28. , A processing operation operation switch 25 including a processing operation stop switch 29 and the door closing control blocking means 9 in the present invention are provided.

    In the first embodiment, the door closing control blocking means 9 is a keyed switch 30. When the keyed switch 30 is in the ON position, the removable key 31 can be removed from the keyed switch 30. . The operator pulls out the key 31 (the door closing control blocking means 9 is turned on), so that a third party who does not have the key 31 can rotate the keyed switch 30 to the OFF side. Since the door 3 cannot be closed, the work can be safely performed in the container 2.

  In the first embodiment, the energization to the driving device 5 is cut off by removing the key 31, but the energization to the control unit in the control operation unit 6 for controlling the sealed container 1 is not cut off. Control of operation can be continued.

  In this Example 1, as shown in FIG. 1 and FIG. 2, an object to be processed is put in the container main body 2, the door 3 is operated to operate the door closing operation switch 27, and the container main body 2 is sealed, After the air in the container body 2 is exhausted by the exhaust means 32, the sterilization gas control valve 22 in the sterilization gas introduction means 34 is opened with the sterilization gas ethylene oxide gas, and the sterilization gas introduction line 23 enters the container body 2. Introducing, exposing the workpiece to ethylene oxide gas, sterilizing the workpiece. Since sterilization with ethylene oxide requires a temperature in the container of 40 ° C. to 70 ° C., a preparatory operation is required before sterilization. In the preparatory operation, when the power switch 8 is turned on, the controller 3 heats the door 3 with a heater (not shown) attached to the surface of the door 3 and is provided outside the container body 2. According to the temperature detected by the temperature sensor 15 provided in the hot water circulation control circuit 33 in the jacket 4, the heat is exchanged in the steam by the heat exchanger 17 to heat the circulating water, and the circulating pump 16 is operated to pass the hot water through the jacket 4. The temperature of the peripheral wall of the container body 2 is increased until the temperature reaches the required temperature while circulating. Here, the hot water is heated by the heat exchanger 17 by controlling the circulating hot water and the steam supplied from the steam introduction line 20 by the heat exchange steam control valve 18. The state of the container main body 2 achieved by the preparation operation is maintained until the processing operation is started (standby operation maintenance).

The preparation operation in the first embodiment takes 3 hours to 5 hours in a closed container having an internal volume of 10 m ³ , although it depends on the size of the container body 2. For this reason, if the power supply of the control unit 21 is shut off for ensuring the safety of the operator, such as replacement work after the processing, the temperature of the jacket 4 and the temperature of the door 3 are changed during the work. Since it decreases, the processing operation cannot be started immediately after the workpiece is replaced.

Next, the cutoff circuit 36 for controlling the energization of the previous SL door drive device 5 will be described with reference to FIG. The shut-off circuit 36 connects the door closing operation switch 27 and the keyed switch 30 in series between the driving device power supply 35 of the door driving device 5 and the driving device 5.

  The keyed switch 30 includes a detachable key 31 and a fixed contact 30b in the keyed switch 30 having a rotation angle of 45 ° to 90 ° when the key 31 is inserted into the keyed switch 30. Any configuration can be used as long as the fixed contact 30c can be turned on and off. For example, a selector switch AR22JR manufactured by Fuji Electric can be used. 30a is a movable contact.

  Next, in the first embodiment, an operator enters the container body 2, and loads and unloads work to be processed in the container body 2, or inspection and repair work for the container body 2 and the door 3. The operation when performing will be described.

  In a normal processing operation, the key 31 is attached to the keyed switch 30 as the door closing control blocking means 9 in a state where the power switch 8 is ON, and the keyed switch 30 Is in an OFF state. In this state, when the operator performs the closing operation of the door 3, the drive device 5 is energized by the operation of the door closing operation switch 27 and the door 3 is sealed with the container body 2. Next, when the operator enters the container body 2, the keyed switch 30 is turned 90 ° with the key 31 inserted, and the keyed switch 30 is turned ON. When the keyed switch 30 is in the ON position, the key 31 can be removed from the keyed switch 30. Therefore, the key 31 is removed, and an operator holds the key 31 into the container body 2. enter.

Further, the operation of the door closing control blocking means 9 will be described with reference to FIG. During normal processing operation, when the keyed switch 30 is operated to the OFF side (operation capable of opening the door), the movable contact 30a and the fixed contact 30c come into contact with each other to be in the ON state, and the door closing operation switch 27 is pressed. Then, a current flows from the driving device power source 35 to the driving device 5 so that the driving device 5 is actuated so that the door 3 is sealed with the container body 2. Then, if the operator enters before Symbol container body 2, the operation of the keyed switch 30 to ON (door closed control inoperative), the said movable contact 30a and the fixed contact 30b contact (ON However, since the fixed contact 30c is not contacted (OFF), the power supply from the drive device power supply 35 to the drive device 5 is cut off, and the drive device 5 operates even if the door closing operation switch 27 is operated. Therefore, since the door 3 does not operate, the container body 2 cannot be sealed.

  In the first embodiment, even if the key 31 is turned on, the energization to the control unit is not interrupted, so that the preparatory operation is continuously performed. Therefore, loading operation and unloading operation in the container body 2 are performed. Alternatively, when the inspection work or the repair work is completed, the processing operation can be quickly started by turning off the key 31.

  Next, a second embodiment using a recording medium, particularly a magnetic card, as the door closing control blocking means 9 will be described with reference to FIG. In the second embodiment, in the breaking circuit 36, a breaking contact 41 is connected in series between the driving device power supply 35 of the driving device 5 and the driving device 5.

  In the second embodiment, the door closing control preventing means 9 receives the signals from the magnetic card 40, the magnetic card reader 38, and the magnetic card reader 38 and is provided in the energization circuit to the driving device 5. The magnetic card reader 37 and the magnetic card 40 constitute a magnetic card system 37. The controller 21 controls the opening and closing of the contacts 41. The control unit 21 includes a microprocessor, a memory storing a program, and a control circuit (not shown) for the breaking contact 41. Further, the door closing operation switch 27 and the like are connected to the control unit 21.

  The operation in the second embodiment will be described. In a normal processing operation, the magnetic card 40 is inserted into the magnetic card insertion port 39 of the magnetic card reader 38, and the magnetic card reader 38 recognizes information recorded on the magnetic card 40. It is operated in (the door closing control blocking means 9 is in an OFF state). When the control unit 21 recognizes that the magnetic card 40 is inserted, the control unit 21 does not turn off the blocking contact 41, and therefore operates the door closing operation switch 27 of the door 3 to operate the door 3 and the container. The main body 2 can be sealed. When an operator enters the container body 2, the controller 21 recognizes that the magnetic card 40 has been removed by removing the magnetic card 40 from the card insertion port 39 (the door closing control blocking means 9. And the shut-off contact 41 is turned off. Therefore, even if the door closing operation switch 27 is operated, the door 3 cannot be sealed.

  Further, in the second embodiment, even when the magnetic card 40 is removed from the magnetic card insertion port 39 in the magnetic card reader 38 (the door closing control blocking means 9 is in the ON state), the control unit 21 is informed. Since the preparatory operation is continuously performed without cutting off the power supply, the loading operation, the unloading operation, the inspection operation, and the repair operation of the container body 2 are completed, and the magnetic card 40 is transferred to the magnetic card reader 38. By inserting the magnetic card into the provided magnetic card insertion slot 38 (turning the door closing control blocking means 9 to the OFF state), the processing operation can be quickly started.

  In the second embodiment, when the magnetic card 40 is removed from the magnetic card reader 38, the same magnetic card is inserted again into the magnetic card reader 38 (the door closing control means 9 is turned off). Until this time, the display of the driving operation unit 7 and the closing control prevention of the door 3 cannot be released. In a situation where the magnetic card 40 is removed from the magnetic card reader 38, even if a third party inserts another magnetic card into the magnetic card reader 38, the door closing control blocking means 9 prevents the door 3 from moving. Since it is impossible to cancel the closing control prevention, it is possible to ensure the safety of the operator in the container body 2. In the second embodiment, when the magnetic card 40 is further removed from the magnetic card reader 38, the control unit 21 can display on the driving operation display unit 7 that the door 3 cannot be closed. It can also be configured.

  Next, a third embodiment using an IC tag card as a recording medium constituting the door closing control blocking means 9 will be described with reference to FIG. In the third embodiment, in the breaking circuit 36, a breaking contact 41 is connected in series between the driving device power supply 35 of the driving device 5 and the driving device 5.

  The door closing control blocking means 9 of the third embodiment inputs an IC tag card 43, an IC tag card recognition / recognition device 44, and a signal from the IC tag card recognition device 44 to the drive device 5. And a control unit 21 that controls the opening and closing of the breaking contact 41 provided in the energization circuit, and the IC tag card 43 and the IC tag card recognition device 44 constitute an IC tag card system 42. Yes. The control unit 21 includes a microprocessor, a memory storing a program, and a control circuit (not shown) for the cutoff contact 41. Further, the door closing operation switch 27 and the like are connected to the control unit 21.

  The operation in the third embodiment will be described. In a normal processing operation operation, the IC tag card 43 is not recognized by the control unit 21 without holding the IC tag card 43 over the reading unit of the IC tag card reading device 44 (the door closing control). The operation is performed in the OFF state of the blocking means 9). Since the control unit 21 does not recognize the IC tag card 43 and does not turn off the blocking contact 41, the door 3 and the container body are operated by operating the door closing operation switch 27 of the door 3. 2 can be sealed. When an operator enters the container body 2, the control unit 21 holds the IC tag card 43 by holding the IC tag card 43 over the IC tag card reader 44 and recognizing the IC tag card. Recognizing (ON state of the door closing control blocking means 9) and turning off the blocking contact 41, the door 3 cannot be sealed even if the door closing operation switch 27 is operated.

  Furthermore, in the third embodiment, in the state where the IC tag card 43 is recognized by the IC tag card reader 44 (ON state of the door closing control means 9), the energization to the control unit 21 is not interrupted, Since the standby state maintaining means is continuously performed, the IC tag card reader 44 is made to recognize the IC tag card 43 again after finishing the loading operation, the unloading operation, the inspection operation, and the repair operation of the container body 2. By making the door closing control means 9 OFF again, the processing operation can be started quickly.

Further, in this third embodiment, when the IC tag card 43 is recognized by the IC tag card reader 44 and the door closing control blocking means 9 is turned on before entering the container main body 2, In order to set the door closing control blocking means 9 to the OFF state, the same IC tag card 43 is read by the IC tag card reading device 44, and the control unit 21 has the same IC tag card. If it is not recognized that it is 43, it is impossible to release the closing control prevention of the door 3. Therefore, when the IC tag card 43 is recognized and the work is performed in the container main body 2, even if a third party tries to recognize another IC tag card 43 by the IC tag card reader 44, the door Since the closing control blocking means 9 cannot be released, the safety of the operator in the container body 2 can be ensured. The control unit 21 displays on the operation display unit 7 the name of the person who is working in the container body 2 and that the door 3 cannot be closed. In the third embodiment, when the IC tag card 43 is further recognized by the IC tag card recognition device 44, the control unit 21 displays on the driving operation display unit 7 that the door 3 cannot be closed. It can also be set as the structure which can be.

It is a structure outline of Example 1 of this invention. It is a schematic structure of the control operation part in Example 1 of this invention. It is a figure explaining the door closing control prevention means in Example 1 of this invention. It is a figure explaining the door closing control prevention means in Example 2 of this invention. It is a figure explaining the door closing control prevention means in Example 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Airtight container 2 Container main body 3 Door 5 Driving device 7 Operation operation screen 9 Door closing control prevention means 21 Control part 24 Door operation switch 25 Processing operation operation switch 30 Keyed switch 31 Key 35 Driving device power supply 36 Shut-off circuit 38 Magnetic card reading Device 40 Magnetic card 43 IC tag card 44 IC tag card reader

Claims (3)

A container body having an opening, a door that opens and closes the opening, a driving device that drives the door for opening and closing the door, a door operation switch that controls the driving device, and an object to be processed in the container body closed vessel provided with processing means for performing predetermined processing, a preparation operation means for performing predetermined preparation operation before processing operation by the processing means, and control means for controlling the preparation operation and the processing with respect to The door closing control blocking means for cutting off the energization to the driving device, and in the state where the door closing control blocking means is turned on, the driving device is cut off and the door closing operation switch The closed container is characterized in that closing control of the door is prevented and the control means continues to control the preparatory operation means. The door closing control blocking means includes a detachable key and a contact provided in an energizing circuit of the driving device, and the door closing control blocking means is turned ON to control the key to the door closing. By pulling out from the blocking means, the door closing control blocking means is maintained in the ON state, the contact is turned OFF to maintain the power supply cutoff state to the drive device, and the key is inserted to block the door closing control blocking. The sealed container according to claim 1, wherein the contact is turned on by energizing the driving device by turning off the means. The door closing control blocking means includes a recording medium, a recording medium recognizing device, and a control means for controlling the opening and closing of the contact provided in the energization circuit to the driving device by inputting a signal from the recording medium recognizing device; The control means opens the contact when the recording medium recognizing device puts the door closing control prevention means in an ON state, and prevents the door closing control by the door closing operation switch. The sealed container according to claim 1, wherein the control of the preparation operation is continued.

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