JP5710207B2 - Steam sterilizer - Google Patents

Description

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

In a steam sterilizer that sterilizes an object to be sterilized contained in a chamber under high-temperature steam, a vacuum pump 7 that evacuates the chamber 3 is used in the base 2 and is used for sterilization in the chamber 3. An injection / drainage tank 8 made of polypropylene with a predetermined amount of water for heating and having an internal capacity of about 20 liters, a cooling tank 9 with an internal capacity of about 20 liters for storing water for sealing and cooling of the vacuum pump 7, etc. The slope board 10 for taking in and out of the pouring / draining tank 8 and the cooling tank 9 is provided in the lower part of the foundation 2. (See Patent Document 1).

JP 2010-068911 A

The present invention, as in Patent Document 1, in which the slope plate 10 for taking in and out of the pouring / draining tank 8 and the cooling tank 9 is provided in the lower part of the foundation 2, the accommodation state in which the slope plate 10 is accommodated, The present invention provides a technique relating to a pulled-out state that is pulled out from this state and tilted forward and a safety structure in which the pouring / draining tank 8 and the cooling tank 9 are restricted from moving forward in this pulled-out state.

A first invention is a pouring / draining tank in which a chamber is arranged on an upper part of a framed foundation, and a predetermined amount of heating water used for sterilization in the chamber is stored in a lower storage chamber of the foundation. A water tank of a vacuum pump for evacuating the chamber and a cooling tank for storing water for cooling are housed, and a slope plate housing portion is provided below the lower housing chamber so that a slope plate can be pulled out, In a steam sterilizer that sterilizes an object to be sterilized contained in a chamber under high-temperature steam,
A guide groove extending in the front-rear horizontal direction at opposite positions on both the left and right sides and a support rail extending in the front-rear horizontal direction formed inward at the opposite positions on the left and right sides below the guide groove are formed at the lower portion of the base. Prepared,
The slope plate includes a guide plate portion serving as a lead-in guide surface of the pouring / draining tank and the cooling tank , and a pair of left and right stop pins protruding downward from the rear portion of the guide plate portion,
A support shaft inserted in the left and right guide grooves so as to be movable back and forth in a retaining state,
A connecting member for connecting the support shaft and the rear connecting portion of the slope plate in a rotatable state;
The slope plate is supported by the support rail in a state of being accommodated in the slope plate accommodating portion, and the support shaft moves in the left and right guide grooves as it is pulled out from the slope plate accommodating portion. In the state where the stop pin is pulled out from the slope plate housing portion, the stop pin is moved by the upward rotation of the rear end edge of the slope plate around the support shaft performed through the connecting member. Lock to the locking part formed at the front of the lower storage chamber,
The slope plate forms a slope in which the guide plate portion is inclined downwardly in a state where the slope plate is locked to the lock portion, and a rear edge of the guide plate portion is formed at a front portion of the lower housing chamber. It becomes a stop step part which suppresses the movement to the front of each said tank, It is characterized by the above-mentioned.

According to a second invention, in the first invention, a retaining member from the guide groove is attached to an outer end portion of the support shaft, and the support shaft can move back and forth in the left and right guide grooves while rotating. Features.

In the first invention, when the slope plate is pulled out from the slope plate housing portion, the stop pin is moved to the front portion of the lower housing chamber by the upward rotation of the rear portion around the support shaft when the slope plate is pushed backward. Therefore, the drawer and the latch can be achieved by a series of operations, the operation can be easily performed, and the slope plate can be stably held in the pulled-out state. Also,
In this stable holding state, the rear end edge of the guide plate portion serves as a stop step portion that suppresses the forward movement of each tank, so that the tank can be prevented from falling off due to natural movement when the slope plate is pulled out. Therefore, a special structure or the like by a special member for preventing the tank from falling off is not required, and a favorable effect can be obtained with a simple configuration from the viewpoint of ensuring safety.

According to the second invention, the effects of the first invention are achieved, and a retaining member from the guide groove is attached to the outer end portion of the support shaft , and the support shaft can be moved back and forth in the left and right guide grooves while rotating. If the slope plate is made of a metal plate in consideration of the stability when the tank is pulled out, the slope plate will be relatively heavy, but even in that case, the operation of pulling out the slope plate is stable and easy. It can be done.

It is a front perspective view of the state which opened the door of the front lower part of the steam sterilizer concerning the present invention. It is a vertical side view which shows the relationship with the slope board of the state which closed the front lower door of the steam sterilizer which concerns on this invention. It is a front view which partially expands and shows the accommodation state of the slope board which concerns on this invention in a cross section. It is a side view which shows the accommodation state of the slope board which concerns on this invention in a cross section. It is a side view which shows the state which pulled out substantially half the slope board which concerns on this invention in a cross section. It is a side view which shows the state which pulled out the slope board which concerns on this invention completely in a cross section. It is a side view which shows the state which rotated the rear-end part of the slope board upwards from the state which pulled out the slope board which concerns on this invention completely. It is a side view which shows the state where the stop pin of the rear-end part of the slope board latched to the latching | locking part from the state of FIG. 7, and the slope board was inclined and installed. It is the perspective view which looked at the structure of the connection member part of the rear part of the slope board which concerns on this invention from the downward direction.

The present invention provides a pouring / draining tank in which a chamber is disposed on an upper portion of a framed foundation, and a predetermined amount of heating water used for sterilization in the chamber is stored in a lower storage chamber of the foundation, A vacuum tank for evacuating the chamber and a cooling tank for storing cooling water are accommodated, and a slope plate accommodating portion is provided below the lower accommodating chamber so that a slope plate can be pulled out. In a steam sterilizer that sterilizes the object to be sterilized in high temperature steam,
A guide groove extending in the front-rear horizontal direction at opposite positions on both the left and right sides and a support rail extending in the front-rear horizontal direction formed inward at the opposite positions on the left and right sides below the guide groove are formed at the lower portion of the base. Prepared,
The slope plate includes a guide plate portion serving as a drawer guide surface of each tank, and a pair of left and right stop pins protruding downward from the rear portion of the guide plate portion,
A support shaft inserted in the left and right guide grooves so as to be movable back and forth in a retaining state,
A connecting member for connecting the support shaft and the rear connecting portion of the slope plate in a rotatable state;
The slope plate is supported by the support rail in a state of being accommodated in the slope plate accommodating portion, and the support shaft moves in the left and right guide grooves as it is pulled out from the slope plate accommodating portion. In the state where the stop pin is pulled out from the slope plate housing portion, the stop pin is moved by the upward rotation of the rear end edge of the slope plate around the support shaft performed through the connecting member. Lock to the locking part formed at the front of the lower storage chamber,
In the state where the slope plate is locked to the locking portion, the guide plate portion forms a slope that is inclined forward and a rear edge of the guide plate portion is formed at the front portion of the lower housing chamber. This is a stop step portion that suppresses the forward movement of each tank, and examples of the present invention will be described below.

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a steam sterilizer according to the present invention. In the steam sterilizer 1, a chamber 3 is disposed on an upper portion of a framed base 2, and a lower storage chamber 2 of the base 2.
0 includes a pouring / drainage tank 8 made of polypropylene and having a capacity of about 20 liters, in which a predetermined amount of heating water used for sterilization in the chamber 3 is stored, and a vacuum pump 7 for evacuating the chamber 3. And a cooling tank 9 having a capacity of about 20 liters for storing water for cooling and water sealing of the vacuum pump 7, and a slope plate in which the slope plate 10 is housed so as to be able to be pulled out below the lower housing chamber 20. A container 21 is provided, and the object to be sterilized stored in the chamber 3 is sterilized under high temperature steam.

More specifically, the periphery of the base 2 is covered with an outer case 1A, and the outer case 1A has a horizontal substrate 2A of the base 2 that is framed in a legislative or vertically rectangular shape, A cylindrical horizontal chamber 3 with a front opening is fixedly attached, and a lid 4 that holds the circular front opening of the chamber 3 in a sealed state is attached to the hinge portion 5 at one side (right side in the figure) of the chamber 3. And is supported so that it can be opened and closed. The lid 4 is opened and closed by the handle 30. The handle portion 30 is provided on the left end side of the lid support 30B fixed to the front surface of the lid 4 by welding or the like, and the right end side of the lid support 30B is supported by the hinge portion 5 so as to be openable and closable. The lid 4 can be opened and closed left and right.

The drainage tank 8 and the cooling tank 9 are individually removably accommodated in tank holding containers 28 and 29 having casters 36 attached to the front, rear, left and right parts, respectively, and the casters 36 roll on the bottom plate 20A of the lower accommodation chamber 20. Thus, it is accommodated in the lower accommodation chamber 20 so as to be accommodated and removable. The front opening of the lower housing chamber 20 and the front surface of the slope plate housing 21 can be opened and closed by a door 1D at the lower front of the exterior case 1A.

For the movement of the steam sterilizer 1, casters 11 are provided at the four corners of the bottom of the base 2. In order to stably install the steam sterilizer 1 at a predetermined position, installation bolts 12 (hereinafter referred to as adjusters 12) supported on the left and right front portions of the bottom of the base 2 so as to be movable up and down with screws. Called).

In order to perform sterilization operation, selection of the sterilization course according to the type of article to be sterilized, sterilization temperature, sterilization time, and other settings are performed. Panel part PA is provided in the front upper part of exterior case 1A. In order to make the steam sterilizer 1 ready for operation, the power switch 60 is turned on, the object to be sterilized is stored in the chamber 3, and the front opening of the chamber 3 is sealed with the lid 4. Becomes standby. This standby state is displayed on the display unit 65 provided on the operation panel PA.
Displayed when ED is lit.

In this state, sterilization conditions are set by a sterilization condition setting switch 61 provided on the operation panel PA. The set temperature and time of the sterilization condition are respectively displayed on the upper and lower display units 63 provided on the operation panel unit PA. After this setting, the start switch 62 provided on the operation panel PA is turned on to give a start command for the sterilization mode. In the sterilization mode, the sterilization process of an object to be sterilized is performed in a predetermined high-temperature steam atmosphere such as 121 ° C. to 134 ° C. in the chamber 3 by the operation of the control unit. Since the progress status of the sterilization mode is sequentially displayed on the process monitor 64 provided in the operation panel PA, the current progress status can be visually recognized. After the high temperature steam in the chamber 3 is exhausted by the completion of the predetermined sterilization process, the sterilization mode is completed through a drying process in which the inside of the chamber 3 is heated with an electric heater, and the display unit 6
LED 5 goes off.

The slope plate accommodating portion 21 located at the lower portion of the base 2 is located below the bottom plate 20A of the lower accommodating chamber 20, and a rail member extending in the front-rear horizontal direction on the left and right sides of the slope plate accommodating portion 21. The RL is attached to the bottom plate 20A so as to be opposed to the left and right. The left and right rail members RL are formed with guide grooves 22 extending in the front-rear and horizontal directions on the vertical walls, and formed in the front-rear direction and horizontally extending support rails 23 formed inwardly at left and right facing positions below the guide grooves 22. doing.

The slope plate 10 includes a guide plate portion 10A that serves as a guide surface when the tanks 8 and 9 are pulled out and stored, a flange 10B that is formed downward on the left and right sides of the guide plate portion 10A, and a lower portion from the rear portion of the guide plate portion 10A. A pair of left and right stop pins 10C projecting toward the right are provided. The left and right guide grooves 22 are provided with left and right support shafts 24 that are inserted in the left and right guide grooves 22 so as to be able to move back and forth in a retaining state, and the support shaft 24 and the rear connecting shaft portion 25 of the slope plate 10 are provided. Each is provided with a connecting member 26 that is connected in a rotatable state. In the illustrated one, the rear connecting shaft portion 25 is formed at the rear portion of the flange 10B.

The slope plate 10 is in a state of being supported by the support rail 23 via the flange 10 </ b> B while being accommodated in the slope plate accommodating portion 21. In the slope plate 10, the support shaft 24 moves in the left and right guide grooves 22 as the slope plate 10 is pulled out from the slope plate housing portion 21. Along with this drawing, the slope plate 10 slides on the support rail 23 via the flange 10B. In order to reduce the resistance at the time of sliding, it is configured to slide on the support rail 23 at the front portion and the rear portion of the flange 10B.

When the steam sterilizer 1 is moved, the adjuster 12 is adjusted so that the lower end is above the ground contact surface GL of the caster 11 by the upward rotation along the screw. Then, in a state where the steam sterilizer 1 is moved to a predetermined place, the adjuster 12 is lowered by rotation along the screw, and the lower end of the adjuster 12 is further rotated along the screw from the state where the lower end of the adjuster 12 is installed on the ground contact surface GL. By setting the front left and right casters 11 to float above the ground contact surface GL,
The steam sterilizer 1 can be stably installed at the place.

In this installed state, the slope plate 10 is accommodated in the slope plate accommodating portion 21 as shown in FIG. The drawer of the slope plate 10 opens the door 1D, and the rear end edge 33 of the slope plate 10 including the stop pin 10C is positioned forward of the front end of the bottom plate 20A of the lower housing chamber 20 as shown in FIGS. The slope plate 10 is pulled out from the slope plate accommodating portion 21 so that As shown in FIG. 6, the drawer is configured such that the maximum drawer position is obtained when the left and right support shafts 24 abut on the front ends of the left and right guide grooves 22. In this maximum drawn-out state, as shown in FIG. 7, the bottom plate of the lower housing chamber 20 is operated by rotating the rear end edge 33 of the slope plate 10 around the support shaft 24 performed via the connecting member 26. The stop pin 10C is made to correspond to the pair of left and right engaging portions 27 formed as holes in the front portion of 20A. In this state, as shown in FIG. 8, the rear end edge 33 of the slope plate 10 is lowered, and the stop pin 10 </ b> C is inserted and locked to the locking portion 27. As described above, when the maximum pull-out position is set, the operation of inserting and locking the stop pin 10C into the locking portion 27 is facilitated.

Thus, in a state where the slope plate 10 is locked to the locking portion 27, the front end portion of the slope plate 10 is in contact with the ground contact surface GL, and the guide plate portion 10A forms a slope that is inclined downwardly forward. Is kept stable. In this state, the rear end edge 33 of the guide plate portion 10 </ b> A forms a stop step portion 35 positioned one step above the bottom plate 20 </ b> A of the lower storage chamber 20 at the front portion of the lower storage chamber 20.

In order to prevent the tanks 8 and 9 from moving forward due to vibration or the like during the operation of the steam sterilizer 1, a depression 39 in which the casters 36 on the front side or the rear side of the tank holding containers 28 and 29 slightly drop is provided in the lower storage chamber 20.
Even if the tanks 8 and 9 move forward for some reason,
Since the casters 36 of the tank holding containers 28 and 29 come into contact with the stop step portion 35 and the forward movement is blocked at that time, the tanks 8 and 9 are prevented from dropping out of the lower storage chamber 20.

Further, when each of the tanks 8 and 9 is pulled out in a state where the slope plate 10 is locked to the locking portion 27 and the guide plate portion 10A forms a slope that is inclined forward, the tank holding containers 28 and 29 are temporarily pulled out. The caster 36 once abuts against the stop step 35 and the drawer is temporarily stopped. However, when the caster 36 pulls more strongly so as to get over the stop step 35, the tanks 8 and 9 together with the tank holding containers 28 and 29 are moved. Can be pulled out. And slope board 1
Each of the tanks 8 and 9 can be moved forward while the caster 36 rolls on the 0 guide plate portion 10A.

As described above, when the tanks 8 and 9 are pulled out, the tank holding containers 28 and 29 are temporarily used.
Since the caster 36 is in contact with the stop step 35, the tank 8,
9 drawers can be performed, and the drawers can be performed stably and safely. In addition, since the casters 36 have to get over the stop step portion 35 when the tanks 8 and 9 are pulled out, if the stop step portion 35 is made too high, the pull-out resistance increases and is difficult to pull out. For this reason, as shown in the drawing, the guide plate is substantially parallel to the bottom plate 20A of the lower housing chamber 20 so that the rear edge 33 of the guide plate portion 10A is placed in a substantially horizontal state on the front portion of the bottom plate 20A of the lower housing chamber 20. If the rear end edge 33 of the portion 10A is formed and the height of the stop step portion 35 is equivalent to the thickness of the rear end edge 33 of the guide plate portion 10A (for example, 2 to 3 mm), the tanks 8 and 9 are moved forward. Prevention of dropout and ease of withdrawal can be achieved.

The storage of the tanks 8 and 9 in the lower storage chamber 20 is performed in the opposite direction to that of the drawer.
, 9, the caster 36 rolls on the guide plate portion 10 </ b> A of the slope plate 10, and the caster 36 is pushed from the step portion 35 onto the bottom plate 20 </ b> A of the lower storage chamber 20, thereby moving the caster 36 into the lower storage chamber 20. The storage of each tank 8, 9 ends.

In a state where the tanks 8 and 9 are accommodated in the lower accommodating chamber 20, as shown in FIG. 7, the rear portion of the slope plate 10 is lifted so that the stop pin 1C is removed from the hole of the engaging portion 27, and then connected. Due to the downward rotation of the rear end edge 33 of the slope plate 10 about the support shaft 24 performed via the member 26, the rear end edge of the slope plate 10 including the stop pin 10C is formed on the bottom plate 20A of the lower housing chamber 20. It moves to the front part of the slope board accommodating part 21 through the front, and it is set as the state shown in FIG. In this state, by pushing the slope plate 10 in the horizontal direction backward, the slope plate 10 slides on the left and right support rails 23 via the left and right flanges 10B, while the left and right support shafts 24 are moved to the left and right guide grooves. 22 is moved, and it is accommodated in the slope plate accommodating part 21, and will be in the state shown in FIG. In the state shown in FIG. 6, when the rear portion of the slope plate 10 is slightly lowered, if the intermediate portion of the connecting member 26 is in contact with the support rail 23, the rear portion of the slope plate 10 is pulled out. Since descent | fall can be restrict | limited, the accommodation operation of the slope board 10 becomes easy.

The tanks 8 and 9 accommodated in the lower accommodation chamber 20 and the slope plate 10 accommodated in the slope plate accommodation portion 21 close the door 1D at the front opening of the lower accommodation chamber 20, as shown in FIG. Thus, the door 1D is prevented from jumping forward.

Considering the stability when the tanks 8 and 9 are pulled out and housed, the slope plate 10 has a thickness of 1.
When configured with a metal plate of about 6 mm, the slope plate 10 is relatively heavy. In that case, in order to reduce the resistance when the slope plate 10 is pulled out and accommodated, rollers 37 that rotate in contact with the inner surface of the guide groove 22 of the support shaft 24 are respectively attached to the left and right support shafts 24. Further, the support shaft 24 is configured so that the left and right support shafts 24 can move back and forth in the left and right guide grooves 22 while rotating. For this reason, the slope plate 10 can be easily pulled out and accommodated, and can be stably and easily performed. Support shaft 2 from the guide groove 22
As a retaining member 4, a retaining member 38 is attached to the outer end portion of the support shaft 24.

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

DESCRIPTION OF SYMBOLS 1 ... Steam sterilizer 1D ... Door 2 ... Base stand 3 ... Chamber 3A ... Front opening 3A1 ... Annular flange 4 ... Cover 5... Hinge part 7... Vacuum pump 8... Drain tank 9... Cooling tank 10... Slope plate 10 A.・ Flange part 11 ... Caster 12 ... Adjuster
10C ... Stop pin 20 ... Lower storage chamber 20A ... Bottom plate of lower storage chamber 21 ... Slope plate storage 22 ... Guide groove 23 ... Support rail 24 ... ··· Support shaft 25 ··· Rear plate connecting portion 26 ··· Connection member 27 ··· Locking portion 28 ··· Tank holding container 29 ··· Tank holding vessel 30 ···・ Handle 30B ・ ・ ・ Lid support 33 ・ ・ ・ ・ ・ ・ Rear edge of slope plate 35 ・ ・ ・ Stopping step 36 ・ ・ ・ Caster RL ・ ・ ・ ・ Rail member

Claims (2)

A chamber is arranged on the upper part of the framed base, and a pouring / draining tank in which a predetermined amount of heating water used for sterilization in the chamber is stored in the lower receiving chamber of the base, and the inside of the chamber is evacuated. A vacuum tank for holding a vacuum pump to be pulled and a cooling tank for storing water for cooling are accommodated, and a slope plate accommodating portion is provided below the lower accommodating chamber so that a slope plate can be withdrawn and accommodated in the chamber. In a steam sterilizer that sterilizes an object to be sterilized under high temperature steam,
A guide groove extending in the front-rear horizontal direction at opposite positions on both the left and right sides and a support rail extending in the front-rear horizontal direction formed inward at the opposite positions on the left and right sides below the guide groove are formed at the lower portion of the base. Prepared,
The slope plate includes a guide plate portion serving as a lead-in guide surface of the pouring / draining tank and the cooling tank , and a pair of left and right stop pins protruding downward from the rear portion of the guide plate portion,
A support shaft inserted in the left and right guide grooves so as to be movable back and forth in a retaining state,
A connecting member for connecting the support shaft and the rear connecting portion of the slope plate in a rotatable state;
The slope plate is supported by the support rail in a state of being accommodated in the slope plate accommodating portion, and the support shaft moves in the left and right guide grooves as it is pulled out from the slope plate accommodating portion. In the state where the stop pin is pulled out from the slope plate housing portion, the stop pin is moved by the upward rotation of the rear end edge of the slope plate around the support shaft performed through the connecting member. Lock to the locking part formed at the front of the lower storage chamber,
The slope plate forms a slope in which the guide plate portion is inclined downwardly in a state where the slope plate is locked to the lock portion, and a rear edge of the guide plate portion is formed at a front portion of the lower housing chamber. A steam sterilizer, wherein the steam sterilizer serves as a stop stage for suppressing the forward movement of each tank. 2. The steam according to claim 1, wherein a retaining member from the guide groove is attached to an outer end portion of the support shaft, and the support shaft can move back and forth in the left and right guide grooves while rotating. Sterilizer.

Images