JP5127191B2 - High pressure steam sterilizer - Google Patents

Description

The present invention relates to a high-pressure steam sterilizer that is mainly installed in a hospital or the like and sterilizes an object to be sterilized such as a medical instrument under high-pressure steam.

A chamber having an upper surface opening provided in the sterilizer body, a lid housing supported to be freely opened and closed on the upper part of the sterilizer body, and a lid for sealing the upper surface opening of the chamber, and housed in the chamber In a high-pressure steam sterilizer that sterilizes an object under high-pressure steam, there is a high-pressure steam sterilizer in which a foot pedal is provided at the front bottom of the sterilizer body, and a lid is opened by operating this pedal. (See Patent Document 1).
JP 2005-6927 A

In the configuration of this Patent Document 1, since the lid can be opened by stepping on the pedal with the foot, the operability in a state where the hand is blocked is improved, but the claw and the pedal for locking the lid are interlocked. There is a problem that the mechanism to be made becomes complicated and the cost increases due to an increase in the number of parts and an increase in the number of assembly steps.

In view of this point, the present invention has a relatively simple configuration in which the lid is opened and closed by hand unlike the configuration of Patent Document 1, and the lid can be opened and closed by a relatively simple operation. The present invention provides a high-pressure steam sterilizer considering safety so that the operation can be started in a closed state.

The high-pressure steam sterilizer according to the first aspect of the present invention has a chamber having a top opening provided in the sterilizer body, and a lid housing supported by a hinge portion that can be opened and closed on the upper rear side of the sterilizer body. A high-pressure steam sterilizer that includes a lid to be sealed and sterilizes an object to be sterilized stored in the chamber under high-pressure steam; a lock unit that locks the lid in a sealed state on the upper front side of the sterilizer body; and An operation handle for unlocking the lock means at the front of the lid housing, a solenoid-type locking device for locking the operation handle so as to prevent the unlocking operation, and the lid housing with respect to the sterilizer body A plurality of closed lid detection switches for detecting that the lid is in a properly closed state (a state where the lid seals the upper surface opening of the chamber). The solenoid-type locking device includes a solenoid attached to the lid housing, a plunger that is operated by the solenoid so as to prevent the unlocking operation by the operation handle, and an operation handle that is operated by the plunger. A lock detection switch, and when all of the lid detection switches and the operation handle lock detection switch have not detected a normal state at the start of operation of the high-pressure steam sterilizer, the operation is not started and the warning mode Thus, a warning sound representing the state is generated from a speaker.

High-pressure steam sterilizer of the second invention, Oite to the first aspect of the present invention, the pressure sensor temperature sensor and the pressure detection of the temperature sensing in the chamber is provided, the abnormal sound of the content to encourage inspection and warning sound indicating the state Is pronounced from the speaker.

A high-pressure steam sterilizer according to a third aspect of the present invention is the first to second aspects of the invention, wherein the sterilizer body is provided with a main control unit that performs overall control of the entire high-pressure steam sterilizer, and the lid housing includes the main control unit. And a sub-control unit that operates under the control of the main control unit, and the lid lock detection switch is connected to the main control unit to set operation conditions and operation modes. An operation unit having a setting unit and a display unit is disposed in the lid housing, and the operation unit, the lid detection switch, and the operation handle lock detection switch are connected to the sub-control unit, and the operation of the main control unit And the operation is controlled by the main control unit and the sub-control unit.

The first invention is configured to perform a check at the start of safe driving by double detection of detecting a closed state by a closed cover detection switch and detecting a locked state of an operation handle by an operation handle lock detection switch. Safe driving will be possible. For this reason, when the lid housing is not properly closed, such as when the lid housing is biasedly closed, or when one of them fails, the lid detection switch does not detect the normal closed state, and the operation is The safety at the start of operation is improved. Further, since the operation handle is locked by the solenoid lock device and the operation handle lock detection switch does not detect the lock state of the operation handle, the operation is not started, so that safety at the start of the operation is improved. Further, if the operation handle is locked during the sterilization operation, the lid opening operation is not erroneously performed and it is safe. When the sterilization operation is completed and the pressure in the chamber drops to a safe atmospheric pressure, the solenoid-type locking device operates to open the lid housing in a safe state if the operation handle is unlocked (the lid opens). When the pressure in the chamber is not lowered, the operation handle is held in a locked state, and safety can be maintained. When either the lid detection switch or the operation handle lock detection switch is not in the normal detection state, a warning sound indicating the state is generated from the speaker, so that the user can immediately detect the abnormal state. It will be a thing.

In the high pressure steam sterilizer of the second invention, in addition to the effects of the first invention , when the temperature or pressure in the chamber is abnormal, a warning voice indicating the state and a voice prompting inspection are generated from the speaker. The user can immediately detect the abnormal state and can take safety measures.

According to the third invention, in the first to second inventions, the sharing control method performed by the sub-control unit provided in the lid housing under the overall control of the main control unit provided in the sterilizer body can be adopted. It is suitable for adopting a configuration for improving the operability by arranging an operation unit having an operation mode setting switch and an operation mode display unit. Since the warning sound representing the state at that time is generated from the speaker based on the operation of the main control unit, the user can immediately detect the abnormal state.

The high-pressure steam sterilizer of the present invention seals the upper surface opening of the chamber in a chamber having an upper surface opening provided in the sterilizer body and a lid housing supported by a hinge portion that can be opened and closed on the upper rear side of the sterilizer body. In a high-pressure steam sterilizer that sterilizes an object to be sterilized stored in the chamber under high-pressure steam, the lid housing is properly closed with respect to the sterilizer body (the lid is the chamber). A closed lid detection switch for detecting that the upper surface opening of the lid has been closed is provided in the left and right positions at the front of the lid housing, and all of the lid detection switches are detected when the operation of the high-pressure steam sterilizer is started. If not, the operation is not started and the warning mode is entered and the warning sound representing the state is generated from the speaker. An embodiment of the present invention will be described below.

An embodiment of the present invention will be described. FIG. 1 is a front perspective view of a high-pressure steam sterilizer according to the present invention, FIG. 2 is a front perspective view of the high-pressure steam sterilizer according to the present invention with the lid opened, and FIG. 3 is a view of the high-pressure steam sterilizer according to the present invention. FIG. 4 is a piping diagram of the high-pressure steam sterilizer according to the present invention, FIG. 5 is a process operation diagram of the high-pressure steam sterilizer according to the present invention, and FIG. 6 is a side view showing in cross section the locking means for the lid of the high-pressure steam sterilizer according to the present invention, and FIG. 7 is a locking device for the lid of the high-pressure steam sterilizer, the lid detecting switch part, and the locking device for the operation handle according to the present invention. FIG. 8 is a front perspective view showing the lid detecting switch portion of the high-pressure steam sterilizer according to the present invention and a lock device portion of the operation handle, and FIG. 9 is a high-pressure steam sterilizer according to the present invention. Shows the operation handle part, lid locking means and lid detection switch part FIG. 10 is a front perspective view showing an operation handle portion, a lid locking means, an operation handle lock device, and a lid detection switch portion of the high-pressure steam sterilizer according to the present invention, and FIG. 11 is a high-pressure steam according to the present invention. FIG. 12 is a block diagram showing the control unit of the high-pressure steam sterilizer according to the present invention, FIG.
Is a control block diagram related to voice pronunciation, and FIG. 14 is a voice pronunciation flowchart.

In the figure, 1 is a high-pressure steam sterilizer of the present invention. High-pressure steam sterilizer 1 is a sterilizer body 2
And a lid housing 3 supported at the upper part of the sterilizer body 2 by a hinge part 18 so that the rear part can be freely opened and closed, and a bottomed cylindrical chamber 4 having an upper surface opening 4A is disposed in the sterilizer body 2;
The lid housing 3 is provided with a lid 5 for sealing the upper surface opening 4A of the chamber 4. In the state where the object to be sterilized is stored in the chamber 4, the lid housing 3 is closed, and the lid 5 seals the upper opening 4 </ b> A of the chamber 4, the high-pressure steam sterilizer 1 is operated to bring the chamber 4 into a high temperature and high pressure state. The object to be sterilized is sterilized. In order to make the upper surface opening 4 </ b> A of the chamber 4 in a good sealed state by the lid 5, an annular body 5 </ b> A is attached to the periphery of the lower end opening of the lid 5, and the annular body 5 </ b> A covers the upper end portion of the upper surface opening 4 </ b> A of the chamber 4. It becomes a state.

Since the inside of the chamber 4 is in a high temperature and high pressure state, it is important to ensure a sealed state with the lid 5.
Therefore, a lock means LK for holding the lid 5 in a locked state that seals the upper surface opening 4A of the chamber 4 is provided at the front of the sterilizer body 2, and a lid lock detection switch 6 that detects this locked state.
Is provided in the sterilizer body 2. In addition, a lid detection switch 7 is provided in the lid housing 3 in order to detect that the lid 5 is in a state of sealing the upper surface opening 4 </ b> A of the chamber 4.

As shown in FIGS. 6 and 7, the lock unit LK includes a lock arm 10 that rotates with respect to the lid 5 in a locked state and an unlocked state. The locking means LK is disposed at least on the left and right sides in the upper front part in the sterilizer body 2 so that the lid 5 is in a locked state in which the upper surface opening 4A of the chamber 4 is securely sealed. For this reason, the lock means LK is provided with a plurality of lock arms 10 spaced apart from each other on the left and right sides. In the embodiment, the lock means LK is an upper part in the sterilizer main body 2 at the front portion that is opposite to the hinge portion 18. 10A on the left and right sides of the
10B. Each of the lock arms 10A and 10B is supported by a support portion 9 extending in parallel from the side surface of the chamber 4 so as to be rotatable by a shaft portion 8, and protrudes upward through the hole 2A1 of the upper wall 2A. Claw portions 10A1 and 10B1 are formed on the upper portions of the lock arms 10A and 10B, respectively. The claw portions 10A1 and 10B1 are engaged with the engagement portions 11 and 11 provided on the peripheral portion of the lid 5, and the lower portions of the lock arms 10A and 10B are Turn each cover lock detection switch 6A, 6B ON-OFF
Actuating portions 10A2 and 10B2 that actuate are formed. And each lock arm 10A, 1
Each of the claws 10 </ b> A <b> 1 and 10 </ b> B <b> 1 is locked by the coil springs 19 and 19 wound around the shaft 8 with one end locked to the support portion 9 and the other end locked to the lock arms 10 </ b> A and 10 </ b> B. 11 and 11 are biased toward the locked state. The hole 2A1 is closed by a bellows-shaped elastic material 54 in the radial direction. The support portion 9 is provided on the upper wall 2 of the sterilizer body 2.
It can also be provided in a state of hanging from A.

The lid housing 3 moves forward by gripping it with the hand on the front side, and the lock arm 10A.
10B is provided with an operation handle 12 for rotating 10B from the locked state to the unlocked state. The operation handle 12 is provided on the front surface portion of the lid housing 3 opposite to the hinge portion 18, and the operation handle 12 is operated inside the fixed grip handle portion 3 </ b> A protruding from the front surface side of the lid housing 3. A fixed grip handle portion 3A in a state where the operation handle 12 is urged rearward by a coil spring 13 disposed between the handle 12 and the base material 3A1 in the grip handle portion 3A.
Are combined. The operation handle 12 includes a plate action portion 17 connected to left and right sides extending rearward. The action portion 17 is loosely fitted with left and right guide pins 16 erected on a fixed portion in the lid housing 3. A long hole 15 in the front-rear direction is formed in the left-right position, and is provided to slide back and forth in the lid housing 3. Supporting of the action portion 17 in the lid housing 3 is such that the left and right sides 3 of the base material 3A1 in the grip handle portion 3A are slid back and forth in the lid housing 3.
It is mounted on the support base 14 provided in the horizontal direction in A11 or the lid housing 3. In the embodiment, the action portion 17 is placed on the left and right sides 3A11 of the base 3A1 in the grip handle portion 3A, and the left and right guide pins 16 are erected on the left and right sides 3A11 of the base 3A1. In addition, the left and right lock arms 10 </ b> A,
Working arm 17A corresponding to the rear side of the locking portions 10A3, 10B3 formed on the upper end of 10B,
17B is provided.

Each of the lock arms 10A and 10B is connected to the claw portions 10A1 and 10B1 by a coil spring 19.
Is biased in the direction of the locked state in which the engaging portions 11 and 11 are engaged. For this reason, when the lid housing 3 is operated with respect to the sterilizer body 2 from the opened state to the properly closed state (the lid 5 closes the upper surface opening 4A of the chamber 4), the locking portions 11 and 11 of the lid 5 are operated. Are inclined surfaces 10A4 that are inclined inwardly on the upper surfaces of the claw portions 10A1 and 10B1 of the lock arms 10A and 10B,
10B4 is brought into contact with the lid housing 3 and the engaging portions 11 and 11 push the inclined surfaces 10A4 and 10B4, so that the claws of the lock arms 10A and 10B are resisted against the acting force of the coil spring 19. Lock arm 10 so that portions 10A1 and 10B1 escape outward
A and 10B rotate. By this action, the locking portions 11 and 11 are moved to the claw portions 10A1 and 10B1.
After passing, the lock arms 10A and 10B are restored by the acting force of the coil spring 19, and the claw portions 10A1 and 10B1 are locked on the locking portions 11 and 11, and the lid 5 is opened on the upper surface of the chamber 4. 4A is sealed. An escape recess 3B into which the upper portions of the lock arms 10A and 10B enter is formed on the rear wall surface of the lid housing 3 so that the upper portions of the lock arms 10A and 10B do not collide with the upper portions of the lock arms 10A and 10B when the lid housing 3 is closed.

As described above, when the lid 5 is closed so that the upper surface opening 4A of the chamber 4 is sealed, the lock arms 10A and 10B are engaged with the locking portions 11 and 11 of the lid 5 by the coil spring 19 and the claw portions 10A1 and 10B1. The locked state is stopped. Since the operation handle 12 is normally biased rearward by the coil spring 13, the operating arm 17A is in the locked state in which the claw portions 10A1 and 10B1 are locked to the locking portions 11 and 11 of the lid 5. , 17B is a state close to the rear side of the locking portions 10A3, 10B3 formed at the upper ends of the lock arms 10A, 10B.

In this state, the operation handle 12 moves forward so as to approach the grip handle portion 3A by gripping the operation handle 12 together with the grip handle portion 3A against the spring force of the coil spring 13. Along with this movement, the action portion 17 moves the left and right guide pins 16 and the longitudinal hole 1
5 and moved forward, the action arms 17A and 17B provided on the left and right sides of the action part 17 pull the locking parts 10A3 and 10B3 forward, respectively. For this reason, the lock arms 10A, 10B
Is rotated forward against the spring force of the coil spring 19, and the claw portions 10 </ b> A <b> 1 and 10 </ b> B <b> 1 are disengaged from the engaging portions 11 and 11 of the lid 5 and become unlocked. In this state, by pushing or pulling up the operation handle 12 together with the grip handle portion 3A as it is, the lid housing 3 is opened upward around the hinge portion 18, and accordingly, the lid 5 is opened on the upper surface opening 4 of the chamber 4.
A can be opened and the object to be sterilized in the chamber 4 can be taken out.

As described above, when the lid 5 is closed so that the upper surface opening 4A of the chamber 4 is sealed, the claw portions 10A1, 10B1 of the lock arms 10A, 10B are locked to the locking portions 11, 11 of the lid 5. It becomes a state. As a result, the operating units 10A2 and 10B2 approach the lid lock detection switches 6A and 6B, so that the operating units 10A2 and 10B2 operate as the lid lock detection switches 6A and 6B.
The actuators 6A1 and 6B1 are pushed up and the lid lock detection switches 6A and 6B are turned on or off.
, The lock state is detected, and the lid lock detection switches 6A, 6 are detected by the signal.
It is recognized that the main control unit MC on the sterilizer body 2 side to which B is connected is in a locked state. When one of the lid lock detection switches 6A and 6B does not detect a normal closed state,
It is determined that the sealing state of the upper surface opening 4A of the chamber 4 by the lid 5 is defective, and the main controller MC performs control so as not to start the operation of the high-pressure steam sterilizer 1.

When the lid housing 3 is not properly closed, such as when the lid housing 3 is biasedly closed, the lid 5
However, when the operation of the high-pressure steam sterilizer 1 is started in this insufficient state, the high-pressure steam in the chamber 4 leaks and is dangerous. In order to prevent this, as shown in FIGS. 7 to 10, the lid housing 3 is in a state in which the lid housing 3 is properly closed with respect to the sterilizer body 2 (the lid 5 is the upper surface opening 4 of the chamber 4.
A closed lid detection switch 7 for detecting that A is sealed) is provided. In order to accurately detect the closed state, the lid detection switch 7 is provided in the lid housing 3 in an array separated from the left and right at the front side portion located at the opposite side to the hinge portion 18. In the embodiment, the lid detection switches 7A and 7B are provided at two locations on the left and right of the upper surface of the substantially U-shaped holding member 20 mounted on the support base 14 provided in the horizontal direction in the lid housing 3.

In order to activate the lid detection switches 7A, 7B by closing the lid housing 3,
Actuating rods 21A and 21B are provided. Specifically, each lid detection switch 7A
, 7B actuating rods 21A, 21B that actuate the respective actuating bodies 7A1, 7B1 are arranged vertically penetrating the upper and lower sides 20A, 20B of the holding member 20 so as to move up and down.
A and 21B are urged in a direction extending downward of the holding member 20 by coil springs 22A and 22B, respectively. Each actuating rod 21A, 21B has a respective stopper 23A, 2B
At the position where 3B contacts the lower side 20B of the holding member 20, the length extending downward of the holding member 20 is limited, and the length extending downward of the lid housing 3 is limited.

When the lid housing 3 is properly closed (the lid 5 seals the upper surface opening 4A of the chamber 4), the lower ends of the actuating rods 21A and 21B protrude downward from the lid housing 3, and the upper wall of the sterilizer body 2 2A is pushed up against the bias of the coil springs 22A and 22B. For this reason,
The respective operating bodies 7A1 and 7B1 of the lid detection switches 7A and 7B are pressed (FIGS. 7 and 8).
FIG. 10 shows a plurality of stages so as to show the operating state), and the lid closing detection switches 7A, 7
B is switched ON or OFF to detect the closed state, and the sub-control unit SC or main control unit MC on the side of the lid housing 3 to which the lid detection switches 7A and 7B are connected is detected by the data (information or signal). Recognize that the lid is closed. When one of the lid detection switches 7A and 7B does not detect the normal closed state, the main control on the sterilizer main body 2 side based on the detection by the sub controller SC based on the data (information or signal). The part MC is controlled not to start the operation of the high-pressure steam sterilizer 1.

As described above, the operation handle 1 together with the grip handle portion 3A against the spring force of the coil spring 13 is used.
Since the lid 5 is unlocked by grasping 2 with a hand, if this operation is performed during the operation of the high-pressure steam sterilizer 1, the high-pressure steam in the chamber 4 leaks and is dangerous. For this reason, during operation of the high-pressure steam sterilizer 1, the sub control unit SC is prevented so that the operation handle 12 cannot move forward.
Based on these operations, a solenoid-type locking device 24 for locking the operation handle 12 is provided in the lid housing 3. Specifically, the solenoid-type locking device 24 includes a solenoid 25 attached on the support base material 14 in the lid housing 3 and ON / OFF of energization of the solenoid 25.
A plunger 26 that protrudes long by the plunger 26 and an operation handle lock detection switch 28 that is actuated by the plunger 26. In order to stabilize the operation of the plunger 26 in the horizontal direction and to keep the handle locked state stably, the hole 14 of the support side 14 </ b> A rising from the support base material 14 at all times.
A hole 27 </ b> A of the drooping side 27 formed in a part of the action part 17 integrated with the operation handle 12 is a plunger 26 which is in a state of penetrating B and protrudes by turning on or off the solenoid 25.
To penetrate. For this reason, even if a grip operation of the operation handle 12 is performed, the operation handle 12 and the action portion 17 cannot be pulled forward, and the claw portions 10A1 and 10B of the lock arms 10A and 10B.
1 is a configuration in which the locked state where 1 is locked to the locking portions 11 of the lid 5 cannot be removed.

An operation handle lock detection switch 28 is provided on the support base 14 in order to detect a handle lock state in which the operation handle 12 is locked by the solenoid type locking device 24. Specifically, the operation handle lock detection switch 28 is attached to an attachment portion extending from the holding member 20, and the actuating body 28A of the switch 28 is pressed and operated by the plunger 26 that protrudes long when the solenoid 25 is turned ON or OFF ( In FIG. 8, the switch 28 is turned ON or OFF by drawing it in a plurality of stages so as to show the operating state. Thereby, it is detected that the operation handle 12 is locked by the solenoid type locking device 24,
The sub controller SC recognizes whether the switch 28 is ON or OFF, and the main controller MC on the sterilizer body 2 side.
Receives the data (information or signal). The main control unit MC operates the sub control unit SC to turn on or off the solenoid 25 and retract the plunger 26 in a safe state in which the temperature and pressure in the chamber 4 have decreased due to the end of the predetermined operation mode. As a result, the locked state of the operation handle 12 is released, and the lid housing 3 can be opened (the lid 5 opens the upper surface opening 4 </ b> A of the chamber 4) by grasping the operation handle 12.

As one method, the solenoid 25 opens the lid housing 3 by retracting the plunger 26 by de-energizing (OFF) and grasping the operation handle 12 (the lid 5 opens the upper surface opening 4A of the chamber 4). In a non-locking state, the plunger 26 is protruded by energization (ON), and the operation handle 12 is locked in the locked state as described above, and the lid housing 3 cannot be opened (the lid 5 is the upper surface of the chamber 4). The state where the opening 4A is closed)
Can be controlled. In this case, turn on the power switch of the high-pressure steam sterilizer 1
In the state, if the temperature and pressure in the chamber 4 are in a safe state, the main controller MC
Based on the above, the solenoid 25 is deenergized (OFF) so that it is not locked, and the high-pressure steam sterilizer 1
During the operation, the solenoid 25 is energized (ON) to lock. Then, as described above, in a safe state in which the temperature and pressure in the chamber 4 are reduced by the sterilization operation and completion of the predetermined operation mode, the solenoid 25 is de-energized (OFF) based on the main control unit MC, The lid housing 3 can be opened (the lid 5 can open the upper surface opening 4A of the chamber 4). In addition, when the power is turned off due to a power failure during operation of the high-pressure steam sterilizer 1 or the power switch is turned off, the solenoid is not energized (OFF), so that the operation handle 12 is not restrained in the locked state. Absent.

At the front of the lid housing 3, a setting unit 31 for setting the operating conditions and operating modes of the high-pressure steam sterilizer 1, a display unit 32 for displaying the operating conditions and operating modes, and an operating unit 30 including a speaker SP and the like. Is provided. The display unit 32 includes a temperature display unit 32A, a time display unit 32B, a course (operation mode) display unit 32C, and a process display unit 32D. Setting unit 31 is provided with time setting unit 31A, reservation setting section 31B, course selection unit 31C, setting confirming section 31D, start section 31E, the stop unit 31F, the up-and-down section 31G or the like of the set value of the temperature and time . Each time the course selection unit 31C is turned ON, the lighting position of the LED 32C1 on the left side of each course in the course (operation mode) display unit 32C is switched to display the selected course, and the lighting position of each LED 32D1 of the process display unit 32D is switched. The process of the selected course is displayed. The setting unit 31 and the display unit 32 are connected to the sub-control unit SC to exchange data (information or signals), and the data (information or signals) with the sub-control unit SC under the control of the main control unit MC. By the exchange, the display unit 32 operates based on the operation of the setting unit 31.

The sterilizer body 2 is provided with casters 33 at the bottom four corners, an exhaust container 34 is detachably stored on the left side of the front surface, and a pressure gauge 35 with a needle type display is provided on the right side of the front surface. FIG. 4 is a piping system diagram. A water tank 37 and a heater 36 such as a sheathed heater disposed in the water in the water tank 37 are provided at the inner bottom of the chamber 4 as steam generating means. 38, a pressure release pipe 39 connected to the pressure gauge 35, a solenoid valve type exhaust valve 40 in the middle, an exhaust pipe 41 whose tip is opened to the water in the exhaust container 34, a vacuum breaker valve 42 and a digital pressure sensor 43. The connected outlet pipe 44 and the like are connected. Temperature sensors 45, respectively, near the inlets of the exhaust pipe 41 and the outlet pipe 44 and at the intermediate height position of the chamber 4, respectively.
46 and 47 are connected.

A drain electromagnetic valve 48 and a manual drain valve 49 are connected in series to the bottom surface of the chamber 4 in the middle.
A drain pipe 50 having an open end connected to the front surface of the sterilizer body 2 below the exhaust container 34 is connected. The manual drain valve 49 opens and closes by turning the handle 52.
The solenoid-type plunger 51 controlled by the main controller MC controls the handle 52 so that the handle 52 can be rotated.

As shown in FIGS. 4 and 12, the main control unit MC is a control means configured by a microcomputer or the like, and data (information or signals) with the sub-control unit SC configured by the microcomputer or the like. On the basis of data (information or signals) from the transfer, digital pressure sensor 43, temperature sensors 45, 46, 47, heater 36, exhaust valve 40, drain electromagnetic valve 48,
The energization control to the solenoid plunger 51 and the like is performed according to a predetermined sequence set in advance. The sub-control unit SC includes data of the setting unit 31 and the lid detection switches 7A and 7B (
Information or signal) is input to control the display unit 32 or the like.

Next, one of the sterilization operations of the high-pressure steam sterilizer 1 will be described. FIG. 5 shows an operation process of the high-pressure steam sterilizer 1, and the operation will be described with reference to this. As described above, when the power switch is turned on, the operation handle 12 is brought into the unlocked state in which the plunger 26 is retracted by the solenoid 25, and the lock arm 10 is held by grasping the operation handle 12 as described above.
A and 10B rotate outward, and the lid housing 3 can be opened (the lid 5 can open the upper surface opening 4A of the chamber 4). The operation handle lock detection switch 28
Is in the ON or OFF state released from the operation by the plunger 26, and the data (information or signal) is input to the sub-control unit SC, and the unlocked state of the operation handle 12 is detected. In this state, the lid housing 3 is opened and a predetermined amount of water is injected into the water tank 37 from the upper surface opening 4A of the chamber 4, and then a sterilized object such as a durham tube is accommodated in the chamber 4, and the lid housing 3 is removed. Close (the lid 5 closes the upper surface opening 4A of the chamber 4).

By closing the lid housing 3 (the lid 5 closes the upper surface opening 4A of the chamber 4), the lock arms 10A and 10B are restored by the coil spring 19 as described above, and the claw portion 1
0A1, 10B1 is in a state of being locked on the locking portions 11, 11 of the lid 5, the lid 5 is in a state of sealing the upper surface opening 4A of the chamber 4, and the operating portions 10A2, 10B2 are in the operating body 6A1,
It leaves | separates from 6B1 and switches to ON or OFF of the lid lock detection switches 6A and 6B. As a result, the main control unit MC that has received the data (information or signal) makes the lock arm 10A.
10B recognizes that the lid 5 is locked. At the same time, the respective operating bodies 7A1 and 7B1 of the lid detection switches 7A and 7B are pressed, and the lid detection switches 7A and 7B are pressed.
7B switches to ON or OFF, and the data (information or signal) is input to the sub-control unit SC, and the closed state is detected.

As described above, the lid housing 3 is properly closed (the lid 5 closes the upper surface opening 4A of the chamber 4), so that the state of the lid detection switches 7A and 7B and the operation handle lock detection switch 28 at that time Since the data (information or signal) is input to the sub-control unit SC and the data (information or signal) of the state of the lid lock detection switches 6A and 6B is input to the main control unit MC, the lid housing 3 is properly closed. Is determined to be in a state where the lid 5 closes the upper surface opening 4A of the chamber 4, and the operation of the high-pressure steam sterilizer 1 can be started by pressing the start portion 31E.

In such a state that the operation of the high-pressure steam sterilizer 1 can be started, the course selection unit 31C selects the course to be sterilized by operating the setting unit 31 provided at the front part of the lid housing 3 and selecting the course. The LED of the course (operation mode) display section 32C is turned on according to the course, and when the temperature display section 32A is viewed and the sterilization set temperature, the exhaust temperature, etc. are to be changed, the up / down section 31G sets the predetermined value. If OK, the setting confirmation unit 31D is turned on.

In order to start the operation of the high-pressure steam sterilizer 1, the solenoid 25 is energized (ON) by pushing the start portion 31E to turn it on, and the plunger 26 protrudes as described above to restrain the operation handle 12 in the locked state. . Then, the plunger 26 is an actuator 2 of the switch 28.
8A is operated, and the switch 28 is turned ON or OFF. As a result, it is detected that the operation handle 12 is locked by the solenoid type locking device 24, and the sub-control unit SC recognizes the ON or OFF of the switch 28 at this time, and the main control unit MC receives the signal. As shown in FIG. 5, the sterilization process is started from time T1. By the start of the sterilization process, the setting unit 3
On the basis of data (information or signal) from the sub-control unit SC based on the operation of 1, the main control unit MC starts the sterilization process from time T1, as shown in FIG.
6 is energized.

In the above case, when the selected course is reserved and sterilization is started at the desired time, the reservation setting unit 31B is turned on, the time setting unit 31A is turned on, the desired time is set by the up / down unit 31G, and OK Then, the setting confirmation unit 31D is turned on. While looking at the temperature display part 32A,
After setting the sterilization set temperature, the exhaust temperature, etc. by the up / down unit 31G, if it is OK, the setting confirmation unit 31D is turned ON. Then, in order to start the operation of the high-pressure steam sterilizer 1, the start unit 3
Press 1E to turn on and wait.

At the start of operation, that is, when a start signal is input by pressing the start portion 31E, at least one of the lid lock detection switches 6A and 6B, the lid detection switches 7A and 7B, and the operation handle lock detection switch 28. On the other hand, when the normal state as described above is not detected, the data (information or signal) is input to the sub-control unit SC so that the main control unit MC does not start the operation of the high-pressure steam sterilizer 1. In addition to the control, a warning voice is emitted from the speaker SP by the voice synthesizing means of the voice control unit 62 described later, and the sterilization process is not started and is in a stopped state. As one of the detection methods of the states of the lid lock detection switches 6A and 6B, the lid detection switches 7A and 7B, and the operation handle lock detection switch 28, check data ( There is a method that is confirmed by a response of information or a signal).

As described above, the water in the water tank 37 is heated by the heater 36 by the start of the sterilization process, and water vapor is generated in the chamber 4. The main controller MC detects the air in the chamber 4 based on the detection of the temperature sensor 40. When the operation of discharging moisture from the exhaust valve 40 to the outside is repeated and the temperature in the chamber 4 reaches a preset boiling point a predetermined number of times, the exhaust valve 4
0 is closed, the air venting process is terminated, and the process proceeds to the heating process.

When the temperature in the chamber 4 reaches the sterilization set temperature in this heating process, the process proceeds to the sterilization process, and the main controller MC controls the energization of the heater 36 to perform sterilization, and sterilizes at time T2. When the set time ends, the relay is turned off and the heater 36 is turned off. At the same time, the main controller MC opens the exhaust valve 40 and proceeds to the cooling process. For example, when the pressure in the chamber 4 detected by the pressure sensor 43 falls to atmospheric pressure at time T3, the main controller MC In response to the data (information or signal), the sub-control unit SC operates by the data (information or signal) from the main control unit MC to deenergize the solenoid 25 (OFF), and the plunger 26 is retracted as described above. Actuator 28 of switch 28 by retraction of plunger 26
A is restored, and the switch 28 is turned ON or OFF. ON or OFF of this switch 28
Thus, the sub-control unit SC recognizes the unlocked state of the operation handle 12 by the solenoid type locking device 24, the main control unit MC receives the data (information or signal), and opens the lid housing 3 (the lid 5 is the chamber 4). It is determined that the upper surface opening 4A can be opened). In this case, if for some reason the plunger 26 is not retracted and the operating body 28A of the switch 28 is kept pressed, the sub-control unit SC detects the state, the main control unit MC receives the signal, and the speaker A warning is issued from the SP that the operation handle 12 is in the locked state. As described above, when the sterilization operation is completed and the pressure in the chamber 4 is reduced to a safe atmospheric pressure that is a predetermined pressure, the solenoid-type locking device 24 is operated and the operation handle 12 is in an unlocked state. The lid housing 3 can be opened (the lid 5 opens the upper surface opening 4A of the chamber 4).

In the above configuration, when the pressure inside the chamber 4 exceeds the atmospheric pressure, the solenoid-type plunger 51 controls the turning operation of the handle 52 to an impossible state and prevents the drain valve 49 from being opened and closed. Thus, the high temperature and high pressure steam is prevented from being ejected when the handle 52 is rotated and the drain valve 49 is opened. Further, when the inside of the chamber 4 exceeds the atmospheric pressure by the main controller MC, the drain pipe 50 is opened when the inside of the chamber 4 is pressurized in order to control the drain electromagnetic valve 48 to be closed. Therefore, stable and safe operation can be obtained.

As described above, when the operation of the high-pressure steam sterilizer 1 is started, if the lid lock detection switch 6 does not detect the lock state of the lock arm 10, the operation is not started. Safety for the user of the sterilizer 1 can be ensured.

Further, since the lock arm 10 is urged by the spring 19 in the locked state,
By grasping the operation handle 12 with a hand, the locked state of the lock arm 10 can be released, and the configuration and operability are simple.

In addition, when the lid detection switch 7 is provided and the lid housing 3 is not in a properly closed state by the switch 7, the operation of the high-pressure steam sterilizer 1 is not started, and thus the safety is further improved. Become.

In addition, during operation, the solenoid lock device 24 that holds the operation handle 12 so as not to move forward is held, and the lid is accidentally opened during the operation, so that the user is damaged such as burns. Safety is improved so that nothing happens. Since the operation handle lock detection switch 28 is actuated by the protruding plunger 26 of the solenoid-type locking device 24, it is possible to reliably detect that the operation handle 12 is locked by the detection switch 28, and to ensure safety during operation. Will be improved.

In addition, since the lid detection switches 7A and 7B are provided at two positions on the left and right, the lid detection switches 7A and 7B are used when the lid housing 3 is not properly closed, such as when the lid housing 3 is biasedly closed.
Since the state can be detected by one of the above, safety at the start of operation is further improved.

Further, the lock arm 10 is provided with lock arms 10A and 10B at two positions on the left and right sides, and the lid lock detection switches 6A and 6B are provided for the lock arms 10A and 10B, respectively, so that the lock state by all the lock arms 10A and 10B can be achieved. The operation can be started only in the state where the operation is started, and the safety at the start of the operation is further improved.

Further, under the overall control of the main control unit MC provided in the sterilizer body 2, the control of the operation unit 30 provided in the lid housing 3, the operation detection of the closure detection switches 7A and 7B, and the operation handle lock detection switch Since the sub-control unit SC can detect the motion 28, the operation unit 30 having the operation mode setting unit 31 and the operation mode display unit 32 is arranged on the lid housing 3. It is suitable for adopting a configuration for improving the performance.

Further, the main controller MC on the sterilizer main body 2 side and the sub controller SC on the lid housing 3 side can be achieved with a limited number of lines so that the number of lines is combined in the embodiment. Thus, the wiring is simplified.

The high-pressure steam sterilizer 1 has a voice guide function. This voice guide function is a function for issuing a procedure such as operation or setting of the high-pressure steam sterilizer 1 as a voice from the speaker SP, and a warning for an abnormal state of the high-pressure steam sterilizer 1 or a warning from the speaker SP when the procedure is incorrect. It has a function to emit.

This will be described with reference to FIGS. For this reason, the main control unit MC is accompanied by a voice guide function for generating a voice from the speaker SP for procedures such as operation and setting of the high-pressure steam sterilizer 1. This sound includes a warning sound that alerts the user when opening the lid housing 3 and a sound that prompts the user to check when the safety device is activated. Pronounced from SP.

FIG. 13 is a block diagram relating to the voice guide. The sub-control unit SC on the lid housing 3 side includes lid detection switches 7A and 7B, an operation handle lock detection switch 28, a time setting unit 31A, a reservation setting unit 31B, a course selection unit 31C, a setting confirmation unit 31D, and a start A setting unit 31 including a unit 31E, a stop unit 31F, a voice ON-OFF setting unit 60, a volume setting unit 61, an utterance content setting unit 64, and the like are connected, and these operation signals are sub-control unit SC. And the main control unit MC operates based on this, and transmits control data (information or signal) to the audio control unit 62. The voice control unit 62 is a microcomputer control system that stores speech data. The microcomputer operates based on the operation of the main control unit MC, and the speech synthesis unit transmits the speech data to the amplification unit (amplifier circuit) 63. Speaker SP
Pronounce it from.

The voice guide has a mode in which the utterance content of the voice guide can be set by the utterance content setting unit 64. The volume can be switched by the volume setting unit 61 between a “medium” state of speaking at a standard volume and a “large” state of speaking at a large volume.

As described above, the main control unit MC exchanges signals with the sub-control unit SC and the heater 36 and the exhaust valve 40 based on data (information or signals) of the pressure sensor 43 and the temperature sensors 45, 46, and 47. The main control unit MC exchanges data (information or signals) with the sub-control unit SC, the pressure sensor 43, and the temperature sensors 45 and 46. , 47, the warning mode is entered.

Such a voice guide function will be described in detail with reference to FIGS. As described above, at the start of operation, that is, when the start signal is input by pressing the start portion 31E, the lid lock detection switches 6A and 6B, the lid detection switches 7A and 7B, and the operation handle lock detection switch 28 Data (information or signal) and setting data (information or signal) of the setting unit 31
Is detected in step S1, and these data (information or signal) are input to the sub-control unit SC in step S2, and the data (information or signal) is transmitted from the sub-control unit SC to the main control unit MC. In step S3, it is determined whether or not these data (information or signal) are legitimate.

If these data (information or signal) are legitimate based on this determination, they are converted into audio data by the audio control unit 62 in step S4, and amplifying means (amplifier circuit) 63 is obtained.
For example, if the course set by the course selection unit 31C is a liquid sterilization course, a sound such as “The liquid sterilization course has been selected” is generated from the speaker SP. If there is a setting mistake by the setting unit 31, for example, a sound such as “setting is not correct” is generated. In step 5, the main controller MC determines whether the temperature and pressure in the chamber 4 are abnormal. If normal, the sterilization process is performed according to a predetermined sequence, and the sterilization process is terminated in step 6.

In step S3, at least one of the data (information or signal) of the lid lock detection switches 6A and 6B, the lid detection switches 7A and 7B, and the operation handle lock detection switch 28 is in a normal state as described above. When not detected, the data (information or signal) is input to the sub-control unit SC, enters the warning mode, jumps to step S7, and a warning sound indicating the state is generated from the speaker SP. For example, when one or both of the lid detection switches 7A and 7B are not operating properly, for example, “the lid is not closed”, “please close the lid properly”, and the lid lock When the detection switches 6A and 6B are not in the normal locked state, for example, “the lid is not locked”, and when the operation handle lock detection switch 28 is not in the normal operation, for example, “ A warning sound indicating the state such as “the operation handle is not locked” is generated from the speaker SP. Then, based on the data (information or signal) from the sub-control unit SC, the sterilization process is terminated halfway so that the main control unit MC does not start the operation of the high-pressure steam sterilizer 1 in Step 6.

In step S5, if the temperature or pressure in the chamber 4 is abnormal, the main controller M
When it is determined in C, the data (information or signal) is input to the sub-control unit SC, and the warning mode is entered and the process jumps to step S7. For example, “the pressure in the chamber is abnormal, the pressure in the chamber is Please do not open the lid until it drops. ”,“ Check the location of *** ”
Such a warning voice representing the state is pronounced from the speaker SP, and a voice of a content that prompts the user to warn of a danger and to check is uttered. Further, based on the abnormal signals from the temperature sensors 45, 46, 47 and the pressure sensor 43, the energization of the heater 36 is stopped so that the main control unit MC does not start the operation of the high-pressure steam sterilizer 1 in step 6. Thus, the sterilization process is terminated halfway, and a safety operation such as opening the exhaust valve 40 and exhausting is performed.

As described above, a voice guide function for guiding a procedure such as operation and setting of the high-pressure steam sterilizer 1 with voices emitted from the speaker SP is attached, and this voice includes a user when opening the lid housing 3. A warning sound that calls attention to the sound and a sound that prompts the user to check when the safety device is activated are included, and these sounds are generated from the speaker SP. As the utterance content generated from the speaker SP, the content set in advance by the utterance content setting unit 64 is generated. Further, the volume of sound produced from the speaker SP is uttered at a volume set by the volume setting unit 61 in advance.

As described above, when the lid detection switches 7A and 7B are not in the closed state, when the operation handle lock detection switch 28 is not operated by the solenoid type locking device 24, or when the pressure sensor 43 and the temperature sensor 45 are not operated. , 46, 47, when it is determined as an abnormal state, the warning mode is entered.

In this warning mode, only the warning sound to call attention and the sound that prompts the user to check when the safety device such as the exhaust valve 40 is opened to exhaust is activated, and the operation / setting etc. The voice is configured not to speak. When the voice ON-OFF setting unit 60 is pressed to set the voice OFF, there is no utterance, and only the buzzer sound is transmitted from the voice control unit 62 to the amplification circuit unit 63 in step 7 of the warning mode, and the speaker Pronounce it from the SP.
For this reason, it is possible to select whether to use a speech state or only a buzzer sound according to the user's preference.

The present invention is not limited to the configurations shown in the above-described embodiments, but can be applied to various forms of high-pressure steam sterilizers, and includes various forms within the technical scope of the present invention.

It is a front perspective view of the high pressure steam sterilizer concerning the present invention. Example 1 It is a front perspective view of the state where the lid of the high-pressure steam sterilizer concerning the present invention was opened. Example 1 It is a front perspective view of the state which removed the cover of the sterilizer main body of the autoclave sterilizer concerning the present invention, and opened the lid. Example 1 It is a piping system diagram of the high pressure steam sterilizer concerning the present invention. Example 1 It is process operation | movement figure of the high pressure steam sterilizer which concerns on this invention. Example 1 It is a side view which shows the locking means of the lid | cover of the high pressure steam sterilizer which concerns on this invention in a cross section. Example 1 It is a front perspective view which shows the lock | rock means of a high-pressure steam sterilizer which concerns on this invention, a cover detection switch part, and the part of the locking device of an operation handle. Example 1 It is a front perspective view which shows the cover detection switch part of the high pressure steam sterilizer which concerns on this invention, and the part of the locking device of an operation handle. Example 1 It is a top view which shows the operation handle part of the high pressure steam sterilizer which concerns on this invention, the lock | rock means of a lid | cover, and a closure detection switch part. Example 1 It is a front perspective view which shows the operation handle part of the high pressure steam sterilizer which concerns on this invention, the lock | rock means of a cover, the lock device of an operation handle, and a closure detection switch part. Example 1 It is a top view which shows the operation part of the high pressure steam sterilizer which concerns on this invention. Example 1 It is a block diagram which shows the control part of the high pressure steam sterilizer which concerns on this invention. Example 1 It is a control block diagram which concerns on the audio | voice pronunciation of the high pressure steam sterilizer which concerns on this invention. Example 1 It is a voice pronunciation flowchart of the high pressure steam sterilizer concerning the present invention. Example 1

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... High-pressure steam sterilizer 2 ... Sterilizer body 2A ... Upper wall of sterilizer body 3 ... Lid housing 3A ... Grip handle part 4 ... ··· Chamber 4A ··· Upper opening of chamber 5 ··· Lid 6 ··· Lid lock detection switch 6A and 6B ··· Lid lock detection switch 6A1 and 6B1 ··· Actuator 7: Closed lid detection switch 7A, 7B ... Closed lid detection switch 7A1, 7B1 ... Actuator of lid closure detection switch 8: Shaft 9: Support section DESCRIPTION OF SYMBOLS 10 ... Lock arm 10A, 10B ... Lock arm 10A1, 10B1 ... Lock arm claw part 10A2, 10B2 ... Lock arm operation part 10A3, 10B3 ... Lock arm latching part 11 .... Locking part 12 ································································································································································································· • 18 ... Hinge part 19 ... Coil spring 20 ... Holding member 20A ... Drain hole 21A, 21B ... Operating rod 22A, 22B ... Coil spring 23A, 23B ... Stopper 24 ... Solenoid locking device 25 ... Solenoid 26 ... Plunger 27 ... Suspended side 27A ... Suspended side hole 28 ... Operate handle lock detection switch 28A ...・ Operating body of the operation handle lock detection switch 30... Operation part 31... Setting part 32... Display part 33 ... caster 34 ... exhaust container 35 ... pressure gauge 36 ... He 37 ... Water tank 38 ... Pressure relief valve 39 ... Pressure relief pipe 40 ... Exhaust valve 41 ... Exhaust pipe 42 ... Vacuum break valve 43 ... Digital Pressure sensor 45, 46, 47 ... Temperature sensor 48 ... Drain solenoid valve 49 ... Manual drain valve 50 ... Drain pipe 60 ... Voice ON-OFF setting unit 61・ ・ ・ ・ Volume setting section 62 ・ ・ ・ ・ Audio control section 63 ・ ・ ・ ・ Amplification means (amplifier circuit)
64 ··· utterance content setting unit LK · · · lock means MC · · · main control unit SC · · · · sub control unit SP · · · speaker

Claims (3)

  A chamber having a top opening provided in the sterilizer body, a lid housing supported by a hinge portion that can be opened and closed on an upper rear side of the sterilizer body, and a lid for sealing the top opening of the chamber. In a high-pressure steam sterilizer for sterilizing a stored object to be sterilized under high-pressure steam, locking means for locking the lid in a sealed state on the upper front side of the main body of the sterilizer, and a lock means at the front of the lid housing An operation handle for releasing the lock, a solenoid-type lock device for locking the operation handle so as to prevent the unlocking operation, and a state in which the lid housing is properly closed with respect to the sterilizer body (the lid is A plurality of lid detection switches for detecting that the upper surface opening of the chamber is sealed) at the front of the lid housing, and the solenoid type The lock device includes a solenoid attached to the lid housing, a plunger actuated by the solenoid so as to prevent the unlocking operation by the operation handle, and an operation handle lock detection switch actuated by the plunger, When all of the lid detection switches and the operation handle lock detection switches do not detect the normal state at the start of operation of the high-pressure steam sterilizer, the operation is not started and the warning mode is displayed to indicate the state. High-pressure steam sterilizer, characterized in that a warning sound is produced from a speaker. The pressure sensor of the temperature sensor and the pressure detection of the temperature sensing in the chamber is provided, the abnormality according to claim 1, characterized in that the sound of a content urging the inspection and warning sound indicating the state is uttered from the speaker High pressure steam sterilizer. The sterilizer body is provided with a main control unit that performs overall control of the entire high-pressure steam sterilizer, and the lid housing transmits and receives data (information or signals) to and from the main control unit. A sub-control unit that operates below, the lid lock detection switch is connected to the main control unit, and an operation unit including a setting unit and a display unit for setting operation conditions and operation modes is disposed in the lid housing, The operation unit, the lid closing detection switch, and the operation handle lock detection switch are connected to the sub-control unit, sounded from the speaker based on the operation of the main control unit, and high pressure is generated by the main control unit and the sub-control unit. 3. The high-pressure steam sterilizer according to claim 1, wherein operation control of the steam sterilizer is performed.

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