JP2011072508A - Vertical steam sterilizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical steam sterilizer having a configuration such that water which intrudes a control box, does not intrude a non-waterproof electric box since, when the adhesion of the end part of a cover film is peeled off, water coming in from the part falls downward from the inside of the control box and is applied to electric components inside the electric box provided inside a body portion to be the cause of a fault and a cost increases when the electric box is made into a waterproof structure to solve the problem, in a vertical steam sterilizer in which a switch operation unit on the upper surface of the control box provided on the upper surface of the body portion is covered with the cover film. <P>SOLUTION: The non-waterproof electric box is provided inside the body portion right below a control panel disposed at the rear upper surface of the upper surface plate of the body portion, and the electric components of the control panel and the electric components inside the electric box are connected by a lead wire passing through the upper surface plate. For the electric box, a back wall is positioned on the front side and opened to the rear part of the body portion, an upper wall forms a waterproof raised wall at the end part and inclined low toward the back wall, the end part of the upper wall overlaps with the upper side of the upper end part of a sidewall, and the lead wire is wired through the sidewall of the electric box. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vertical 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-temperature high-pressure steam, and particularly relates to a waterproof structure for an electrical component.

  There is Patent Document 1 as a vertical steam sterilizer that opens and closes a vertical chamber opened on the upper surface of a main body with a lid. In this patent document 1, a support part and a holding part are arranged at a position sandwiching the opening, and the other end part is turnable to the support part in the left-right direction so that one end part can move up and down with respect to the holding part. A supported arm, and a handle shaft that has a handle at the upper end and rotatably supports the lid at the lower end, and a male spiral formed at the middle portion that engages with a female spiral that vertically penetrates the arm. The opening is sealed by the lower movement of the lid and the opening of the one end of the arm relative to the restraining portion by the rotation of the handle shaft by the handle, and the object to be sterilized is sterilized with steam in the chamber There is.

  In this patent document 1, it is not certain where to provide a switch operation unit for setting sterilization operation conditions, starting control of sterilization operation, etc., but in a vertical steam sterilizer, Patent Document 2 of the present applicant discloses a control box having a switch for performing setting of sterilization operation conditions, start control of sterilization operation, and the like, and an operation unit for the sterilization operation.

JP-A-11-276557 Japanese Patent Application No. 2009-147324

  In the form of Patent Document 2, as shown in FIG. 1, an electrical box DB containing a board on which electrical parts such as a switch provided in the control box 2A are mounted and a board on which electrical parts such as a control unit and a power supply unit are mounted is accommodated. The two boards are connected by lead wires RS, but are mounted in the main body portion directly below the control box 2A in order to shorten the length of the lead wires RS extending between the control panel 2A and the electrical box DB. Further, the electrical box DB is a non-waterproof type in which the rear surface of the rectangular box is opened so that the repair and inspection are easy, and the rear surface is covered with a cover plate. In this case, the lead wire RS is wired through a through hole (KA shown in FIG. 5) of the upper surface plate 2P of the main body 2 corresponding to the bottom surface of the control box 2A. In this configuration, in a normal use state, even if water drops are applied to the upper surface of the upper surface plate 2P or the upper surface of the control box 2A, this water does not enter the electrical box DB and cause a failure. .

  In view of the control box 2A, as shown in FIG. 5, the control box 2A is attached to the rear part of the upper surface plate 2P of the main body 2 to achieve a waterproof structure while ensuring the operability of the switch operation unit SWP. The upper surface of the control box 2A is covered with a cover film FM so as to cover the switch operation unit SWP, and the peripheral portion and an appropriate place of the cover film FM are bonded to the upper surface of the control box 2A with an adhesive. In this state, water does not enter the control box 2A even if water drops are applied to the upper surface of the control box 2A. However, if the edge of the cover film FM is peeled off, the water that has entered from the portion FMB is removed. However, there is a risk of entering the control box 2A from the switch operation unit SWP or other parts.

  As described above, when water enters the control box 2A from the part FMB where the end of the cover film FM is peeled off, it falls from the through hole KA of the upper surface plate 2P through which the lead wire RS passes and enters the electrical box DB. There is a concern that the water may enter the electrical box DB and cause the control unit, the power supply unit, and the like to cause a failure. Moreover, when it penetrate | invades in electrical equipment box DB along said lead wire RS and the water falls on a control part, a power supply part, etc., there is a concern that it may cause a failure.

  Further, in the vertical steam sterilizer, the chamber 4 becomes high temperature, but the bottom surface of the control box 2A of the top plate 2P of the main body 2 is prevented so that the temperature inside the control box 2A does not rise too much. When the air circulation hole is formed in the portion corresponding to the above, water that has entered the control box 2A from the portion FMB where the end of the cover film FM has been peeled off as described above falls from the air circulation hole. There is a concern that the water splashes on the electrical box DB, and the water enters the electrical box DB, causing the control part, the power source part and the like to cause a failure.

  As described above, if the water that has entered the control box 2A enters the electrical box DB below, the electrical box DB has a sealed waterproof structure so that it does not enter the electrical box DB. Although it is possible to prevent water from splashing on the power supply unit, the power supply unit, etc., the cost of the electrical box DB is increased, which is not preferable, and it takes time and effort to return to the sealed state every time inspection or repair in the electrical box DB is made.

  In view of such a point, the present invention does not have a waterproof structure in order to reduce the cost of the electrical box, and as described above, water enters the control box from the part where the end of the cover film is peeled off. The present invention provides a configuration that protects the electrical components in the electrical box from water falling from above with a configuration that does not enter the electrical box even if it has entered.

  The present invention includes a vertical chamber opened on the upper surface of the main body, a lid that opens and closes the opening, a control panel disposed on the rear upper surface of the upper surface plate of the main body, and the main body directly below the control panel. In the vertical steam sterilizer including a non-waterproof electrical box that accommodates electrical components that are arranged and extend through the top plate and connected to electrical components of the control panel, the electrical box is Opening toward the rear of the main body with the wall as the front side, the upper wall forms a waterproof standing wall at the end and is inclined downward toward the back wall, and the end of the upper wall is above the upper end of the side wall And a lead wire extending between the control panel and the electrical equipment box is wired through the side wall of the electrical equipment box.

  According to the present invention, in order to shorten the length of the lead wire between the control panel and the electrical equipment box, when the configuration in which the electrical equipment box is arranged in the main body portion directly under the control panel is adopted, a cover film covering the upper surface of the control box is provided. Even if water from the peeled part passes through the inside of the control box and the lead wire flows down from the hole that penetrates the top plate, and the water falls on the top wall of the electrical box, the waterproof standing wall at the end Does not enter the electrical box and flows toward the back wall along the inclination of the upper wall. In addition, when the upper wall and the side wall are formed by continuous bending with the back wall, a gap is created between the upper wall and the upper end of the side wall, but this gap is located above the upper end of the side wall. Since it is covered by overlapping, it does not enter the electrical box. For this reason, even if the electrical box is a non-waterproof type that opens toward the rear of the main body and is covered with some cover plate, water that has dropped on the upper wall of the electrical box does not flow into the electrical box. This prevents water from splashing on the electrical components in the electrical box and causing a failure.

  Also, in order to prevent the temperature in the control box from excessively rising due to the heat of the chamber, this air circulation hole is formed even when an air circulation hole is formed in a portion corresponding to the bottom surface of the control box on the top plate of the main body. Even if water falling from the top falls on the upper wall of the electrical box, it is possible to prevent the water from flowing into the electrical box in the same manner as described above due to the inclination of the upper wall and the overlapping structure.

  In the present invention, since the lead wire extending from the control panel to the electrical box passes through the side wall of the electrical box, it is easy to prevent water flowing down through the lead wire from flowing into the electrical box. Therefore, it is suitable for adopting a low-cost electrical box such as a non-waterproof electrical box.

It is a whole perspective view in the lid sealed holding state of the vertical steam sterilizer concerning the present invention. It is a back perspective view which removes the back board of the vertical steam sterilizer concerning the present invention, and shows the arrangement relation of a control panel and an electrical equipment box. It is explanatory drawing of formation of the electrical equipment box which concerns on this invention. It is a back perspective view which expands and shows the structure of the electrical equipment box which concerns on this invention. It is explanatory drawing which shows the state which the cover film of the control panel of the vertical steam sterilizer which concerns on this invention peeled.

[Example 1]
Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, a vertical steam sterilizer 1 of the present invention includes a cylindrical vertical chamber 4 opened on the upper surface of a main body 2 and a lid 5 that opens and closes the upper surface opening of the chamber 4. The support portion 7 and the restraining portion 8 are arranged at a position sandwiching the upper surface opening of the chamber 4 on the upper surface of the portion 2, and the other end is a support end so that the one end portion 9 A which is a free end can move up and down with respect to the restraining portion 8. The end 9 </ b> B includes an arm 9 that is supported by the support portion 7 so as to be capable of lateral rotation, and a handle 10 that is fixed to the upper end of a handle shaft 13 that is spirally fitted to the arm 9. The lid 5 is supported at the lower end of the handle shaft 13 so as to be freely rotatable. When the handle 10 is rotated in the forward direction or the reverse direction, the handle shaft 13 is rotated, and the arm 9 and the handle shaft 13 are relatively moved. It is a mechanism that moves up and down.

  The support end 9B of the arm 9 is attached to the support portion 7 by a nut 43, and is supported so that it can be rotated in the lateral direction and the free end 9A of the arm 9 can be moved upward (moved upward). The arm 9 can be rotated in a predetermined lateral direction with the portion 7 as an axis. For this reason, when the lid 5 is raised to a position away from the upper surface opening 3 in the chamber 4, the arm 9 is rotated in a predetermined lateral direction, so that the lid 5 is moved in the predetermined lateral direction. Since it rotates, the lid 5 can be moved to a position outside the upper surface opening of the chamber 4, and the object to be sterilized can be accommodated in the chamber 4 and taken out from the chamber 4.

  The object to be sterilized is accommodated in the chamber 4, the arm 9 is rotated so that the lid 5 is positioned above the upper surface opening of the chamber 4, and the free end 9 </ b> A of the arm 9 is fitted into the holding portion 8. The holding portion 8 has a configuration in which the receiving port 8B is opened in one direction, and the free end 9A of the arm 9 enters from the receiving port 8B by the rotation of the arm 9, and is provided on the back side of the receiving port 8B. It is held at the position where it collided with the stop. In this state, the lid 5 is positioned immediately above the upper surface opening of the chamber 4.

  In this state, the handle shaft 13 is also rotated by rotating the handle 10 in the forward direction to lower the lid 5. This forward rotation acts in a direction in which the free end 9A of the arm 9 collides with the stop provided on the back side of the receiving port 8B, so that the state where the free end 9A is positioned on the back side of the receiving port 8B is maintained. be able to. Since the arm 9 has a predetermined load, the free end 9A of the arm 9 moves upward (moves upward) as the handle 10 rotates in the forward direction, and abuts against the upper side 8A of the holding portion 8 to move upward (upward). Direction movement) is restricted, and the switch 15 is turned ON. As the handle 10 is further rotated in the forward direction from the restricted state, the handle shaft 13 is lowered with respect to the arm 9, so that the lid 5 is moved down and the upper surface opening of the chamber 4 is sealed. . In this sealed state, an initial sterilization operation is performed. The lid 5 can be opened by rotating the handle 10 in the reverse direction.

  A control panel 2A is disposed at the rear upper surface of the upper surface plate 2P of the main body 2, and a non-waterproof electrical box DB is disposed in the main body 2 immediately below the control panel 2A. This arrangement is a configuration that can shorten the length of the lead wire RS extending between the control panel 2A and the electrical box DB.

  Control box 2A has a sterilization start switch, power switch, reset switch, temperature setting switch, time setting switch, an up switch that increases (increases) temperature or time each time ON (press), and every ON (press) Housed is a control box side substrate RSP in which electrical components of various switches SW such as a down switch for lowering (decreasing) temperature or time, and electrical components such as a display unit for displaying a set temperature and time are accommodated. Yes. Further, in the electrical box DB, the electrical parts SG of the control unit electrically connected to the switch SW and the display unit in the control box 2A, and the electrical parts for AC such as the transformer TR and the relay RY constituting the power source unit. The electrical box side substrate DBP to which the BG is attached is accommodated. In the embodiment, the electrical box side substrate DBP controls the control unit side substrate RSP, the substrate DBP1 to which the electrical component SG (DC electrical component including a microcomputer for controlling sterilization operation and a display control unit) is attached. It is composed of a substrate DBP2 to which AC electrical components BG such as a transformer TR that constitutes a power source of the substrate DBP1 to which the electrical components SG are attached and a relay RY for ON / OFF control of the heating heater in the chamber 4 are attached. ing.

  The lead wire RS includes a substrate RSP in the control box 2A to which an electrical component such as a switch provided in the control box 2A is attached, and an electrical component SG such as a control unit and a power source unit BG accommodated in the electrical box DB. The board DBP in the attached electrical box DB is electrically connected.

  In order to achieve a waterproof structure while ensuring the operability of the switch operation unit SWP for operating the switch provided in the control box 2A, the upper surface of the control box 2A is covered with a cover film so as to cover the switch operation unit SWP. The cover film FM is covered with FM, and the peripheral portion and appropriate place of the cover film FM are bonded to the upper surface of the control box 2A with an adhesive. In this state, even if water droplets are applied to the upper surface of the control box 2A, water does not enter the control box 2A.

  As shown in FIGS. 2 and 4, the electrical box DB has a back wall DB1 that faces the front side of the main body so as to be easily repaired and inspected, and is surrounded by an upper wall and a side wall. Open toward the back of the. The electrical box DB has a basic shape of the box shape of the rear opening surrounded by the back wall DB1, the upper and lower walls, and the left and right side walls. However, in order to reduce the cost of the electrical box DB, in the embodiment, the electrical box DB The left and right side walls of the main body 2 are also used as the left and right side walls (left side wall 2H in rear view), and the bottom wall of the electrical box DB is also used as the bottom wall 2T of the main body 2. Yes.

  As shown in FIG. 3, the electrical box DB according to the embodiment is formed by bending a single metal plate KP at a position indicated by a dotted line, a back wall DB1, an upper wall DB2, a right side wall DB3, and a waterproof vertical wall BT. And the overlap portion VL is formed.

  Further, in the electrical box DB, the upper wall DB2 is integrally formed by bending a waterproof standing wall BT at the rear end and the left end in the rear view, and the upper wall DB2 is inclined downward toward the back wall DB1. In addition, the right end of the upper wall DB2 is bent so as to overlap the upper side of the upper end of the right side wall DB3, and a gap generated between the upper end of the upper wall DB2 and the upper end of the right side wall DB3 Water covered by the wrap portion VL and falling on the upper wall DB2 is prevented from flowing into the electrical box DB from this gap.

  Thus, when the electrical box DB according to the embodiment has the back wall DB1, the upper wall DB2, and the right side wall DB3 in the back view formed by bending a single metal plate, As viewed, the right side surface is closed by the left side wall 2H of the main body part 2 and the bottom surface is closed by the bottom wall 2T of the main body part 2, and is attached to a position near one side wall in the main body part 2. Yes. When the rear cover plate 2B of the main body 2 is attached to the peripheral edge of the rear opening of the main body 2 with the electric box DB attached in the main body 2, the rear cover is attached to the rear opening of the electric box DB. The plate 2B is brought into contact with or close to it, and the rear opening of the electrical box DB is covered with the rear cover plate 2B. For this reason, the cover plate that closes the rear opening of the electrical box DB can be omitted.

  The lead wire RS is wired through the through hole KA of the upper surface plate 2P of the main body 2 corresponding to the bottom surface of the control box 2A. The lead wire RS passes through the through hole KB of the right side wall DB3 of the electrical box DB and is wired in a substantially vertical state, but the water flowing down through the lead wire RS flows into the electrical box DB from the through hole KB. In order to prevent this, a draining portion UT in which the lead wire RS is U-turned outside the electrical box DB is formed.

  In addition, the chamber 4 is heated to a high temperature by the sterilization operation, but a portion corresponding to the bottom surface of the control box 2A of the upper surface plate 2P of the main body 2 in order to prevent the temperature inside the control box 2A from excessively rising due to the heat. In addition, a plurality of air flow holes AA are formed.

  As shown in FIG. 5, when the adhesion of the edge of the cover film FM on the upper surface of the control box 2A is peeled off, the water that has entered from the part FMB is transferred from the switch operation part SWP and other parts into the control box 2A. There is a risk of intrusion. When water enters the control box 2A from the part FMB where the adhesion of the end of the cover film FM is peeled off, it falls from the through hole KA and / or the air circulation hole AA of the upper surface plate 2P through which the lead wire RS passes. It hangs on the upper wall DB2 of the electrical box DB. The water is prevented from flowing down from the end of the upper wall DB2 by the waterproof vertical wall BT, and flows down to the outer surface of the back wall DB1 along the inclination of the upper wall DB2, so that it does not enter the electrical box DB. Moreover, since the water which reached the overlap part VL flows down to the outer surface of right side wall DB3 by the overlap part VL, it does not penetrate | invade in electrical box DB. Furthermore, the water flowing down through the lead wire RS does not fall by the draining portion UT and does not flow into the electrical box DB from the through hole KB.

  Thus, the water that has entered the control box 2A from the part FMB where the end of the cover film FM has been peeled off does not enter the lower electrical box DB, and thus can be a non-waterproof electrical box. It becomes an electrical equipment structure with a waterproof effect that suppresses cost increase.

  The present invention is not limited to the above-described embodiments, and can be applied to various types of vertical steam sterilizers of the vertical chamber system, and includes various forms within the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Vertical steam sterilizer 2 ... Main part 2A ... Control box 2H ... Left side wall of main part 2T ... Bottom wall of main part 4 ... ··· Vertical chamber 5 ··· Lid 7 ··· Support portion 8 ··· Holding portion 9 ··· Arm 10 ··· Handle 13 ··· Handle axis AA · · · ... Air circulation hole DB ... Electric box DB1 ... Back wall of electric box DB2 ... Upper wall of electric box DB3 ... Right side wall of electric box DBP ... Electric box side board DBP1・ Substrate DBP2 ・ ・ Substrate FM ・ ・ ・ ・ Cover film FMB ・ ・ ・ Peeled part of cover film KA ・ ・ ・ ・ Through hole KB ・ ・ ・ ・ Through hole RS ・ ・ ・ ・ Lead wire RSP ・ ・ ・ Control box Side board SG ... Electric part of the control part BG ···· AC electrical components SW ···· switch SWP ··· switch operation unit UT ···· draining portion

Claims (1)

  A vertical chamber opened on the upper surface of the main body, a lid for opening and closing the opening, a control panel disposed on the rear upper surface of the upper plate of the main body, and the upper body disposed in the main body immediately below the control panel. In a vertical steam sterilizer equipped with a non-waterproof electrical box that contains electrical components connected to electrical components of the control panel by lead wires extending through the face plate, the electrical box has a back wall as a front side. Opening toward the rear of the main body, the upper wall forms a waterproof standing wall at the end and is inclined downward toward the back wall, and the end of the upper wall overlaps the upper side of the upper end of the side wall. The vertical steam sterilizer is characterized in that a lead wire extending between the control panel and the electrical box passes through a side wall of the electrical box.

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