JP2010246847A - Shelf structure for steam sterilization - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent condensed water of steam from remaining on fall prevention plates which receive the condensed water, while preventing the condensed water from falling onto objects to be sterilized on lower shelves. <P>SOLUTION: The shelves 1 of an inner truck 2 to be put-in/out to/from the sterilization tub of a steam sterilizer include shelf materials 13 and the fall prevention plates 14. The shelf materials 13 are formed by combining wire materials, where the objects to be sterilized are placed. The fall prevention plates 14 are arranged below the shelf materials 13 and prevent the condensed water of the steam from falling onto the objects to be sterilized on the lower shelf materials 13. In the fall prevention plates 14, quadrangular plate materials are bent in a chevron shape and allow the condensed water of the steam to run down to the both right and left sides. The condensed water runs down on the slopes 16 of the fall prevention plates 14, however even when remaining without running-down, the evaporation is promoted since the fall prevention plates 14 are made of aluminum with higher heat conductivity compared with stainless steel. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a shelf provided in a sterilization tank of a steam sterilizer or a shelf to be taken in and out of the sterilization tank.

  Conventionally, as disclosed in Patent Document 1 below, a steam supply port (6) is provided in the top wall (5) of the sterilization tank (1), and a predetermined gap is provided from the top wall (5). Steam in which a top plate member (9) is arranged, and an inclined plate (16) is provided on the bottom surface side of the shelf member (15) arranged in the sterilization tank (1) toward the side plate member (11). Sterilizers are known. According to this steam sterilizer, the top plate member (9) prevents the condensed water in the steam supplied into the sterilization tank (1) from falling on the object to be sterilized, while being in contact with the object to be sterilized. The inclined plate (16) prevents the condensed water generated by the above from falling on the object to be sterilized in the lower shelf.

Japanese Patent Laid-Open No. 10-211262 (claim 2, paragraph number 0010-0011, FIG. 1)

  In the invention disclosed in Patent Document 1, when the inclination angle of the inclined plate is increased, the storage space for the object to be sterilized placed on the lower shelf is limited, and there is a possibility that the inclination plate may come into contact with the object to be sterilized. . Therefore, the inclined plate has a limit on the inclination angle, and even if the condensed water is received, the condensed water may remain on the inclined plate without flowing down from the inclined plate.

  Condensed water that remains on the inclined plate without flowing down from the inclined plate receives heat transfer from the inclined plate itself heated by steam and radiation heat from the wall surface of the sterilization tank. There is a possibility that the condensed water cannot be evaporated. If the condensed water remains on the inclined plate, vapor condensation occurs on the back surface of the inclined plate, and this condensed water is dripped onto the object to be sterilized. When taking out, high temperature water may fall to the operator.

  The problem to be solved by the present invention is to prevent condensate from remaining on a fall prevention plate that receives the condensate while preventing the condensate of steam from dropping onto the object to be sterilized in the lower shelf. It is in. And it makes it a subject to prevent the drying defect of to-be-sterilized material and to ensure the safety | security of an operator thereby.

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is a shelf provided in a sterilization tank of a steam sterilizer, or a shelf that is taken in and out of the sterilization tank, A shelf formed by a combination of wires or a perforated plate, on which the item to be sterilized is placed, and a drop provided at the bottom of this shelf to prevent the condensed water of steam from falling onto the item to be sterilized below A shelf structure for steam sterilization, wherein the fall prevention plate is formed of aluminum subjected to anticorrosion treatment.

  According to the first aspect of the present invention, by providing the fall prevention plate that receives the condensed water of the steam at the lower part of the shelf formed by the combination of the wires or the perforated plate, the condensed water of the steam is in the lower shelf. It can prevent falling to the sterilized object. In addition, the fall prevention plate is made of anticorrosive aluminum. Since the aluminum material has a lower density and higher thermal conductivity than the stainless steel material, the amount of condensed water generated on the fall prevention plate is small, and the generated condensed water can be smoothly evaporated. Thereby, it is possible to prevent poor sterilization of the object to be dried and to prevent a high-temperature water droplet from falling on the operator when the object to be sterilized is taken out from the sterilization tank.

  According to a second aspect of the present invention, the fall prevention plate is formed in a quadrangular pyramid shape, and the steam condensate is allowed to flow back and forth, left and right, or is formed in a mountain shape with a quadrangular plate material. The steam sterilization apparatus according to claim 1, wherein the steam is poured down to the left and right sides or the front and back sides, or the rectangular plate material is inclined to flow the condensed water of the steam to the left and right sides or the front and back sides. It is a shelf structure.

  According to the second aspect of the present invention, the fall prevention plate is formed with an inclined surface, and the inclined surface allows the steam condensate to flow down. As a result, it is possible to further prevent the condensed water from remaining on the fall prevention plate, prevent poor drying of the object to be sterilized, and ensure the safety of the operator.

  The invention according to claim 3 is characterized in that the fall prevention plate collects steam condensate at one or a plurality of corners out of its four corners and causes it to flow downward. It is a shelf structure for steam sterilization.

  According to the third aspect of the present invention, the condensed water of the steam is collected at one or a plurality of corners and poured downward, so that it is possible to prevent the fall to the sterilized object more reliably. Moreover, even if condensed water remains on the fall prevention plate, it can be prevented from falling to the operator by flowing downward from a predetermined location.

  The invention according to claim 4 is characterized in that the condensed water collected at the corner is allowed to flow downward through the inside of the support column, or to flow downward along the support column but outside the support column. It is the shelf structure for steam sterilization of description.

  According to the fourth aspect of the present invention, the condensed water from the fall prevention plate is allowed to flow downward through the inside of the support column, or is discharged outside the support column but along the support column. Can be more reliably prevented.

  The invention according to claim 5 is the steam sterilization shelf structure according to any one of claims 1 to 4, wherein the fall prevention plate is formed in black.

  According to the invention described in claim 5, by forming the fall prevention plate in black, the amount of radiant heat to the fall prevention plate is increased, the generation of condensed water on the fall prevention plate is prevented, and the condensation water is evaporated. Can be encouraged.

  The invention according to claim 6 is the shelf structure for steam sterilization according to any one of claims 1 to 5, wherein the fall prevention plate is subjected to a water repellent treatment on an upper surface.

  As in the sixth aspect of the present invention, by applying a water repellent treatment to the fall prevention plate, it is possible to promote the drop of water droplets from the fall prevention plate.

  The invention according to claim 7 is the shelf structure for steam sterilization according to any one of claims 1 to 5, wherein the fall prevention plate is subjected to a hydrophilic treatment on an upper surface.

  As in the invention according to claim 7, by applying hydrophilic treatment to the fall prevention plate, the surface tension of the water droplet on the fall prevention plate is destroyed, and the water film adhering to the fall prevention plate is thinned, thereby dropping The evaporation of water droplets from the prevention plate can be promoted.

  The invention according to claim 8 is the shelf structure for steam sterilization according to any one of claims 1 to 7, wherein a pipe through which steam is passed is provided in the fall prevention plate. .

  As in the eighth aspect of the invention, by flowing steam through the pipe, heat can be applied to the fall prevention plate to promote evaporation of water droplets from the fall prevention plate.

  The invention according to claim 9 is the shelf structure for steam sterilization according to any one of claims 1 to 7, wherein a heater is provided on the fall prevention plate.

  As in the ninth aspect of the invention, heat can be applied to the fall prevention plate by the heater to promote evaporation of water droplets from the fall prevention plate.

  The invention according to claim 10 is the shelf structure for steam sterilization according to any one of claims 1 to 7, wherein the fall prevention plate is provided with fins on a lower surface.

  According to the tenth aspect of the present invention, by providing fins on the fall prevention plate, the amount of radiant heat transferred to the fall prevention plate can be increased, and evaporation of water droplets from the fall prevention plate can be promoted.

  According to the present invention, by providing the fall prevention plate at the lower part of the shelf on which the article to be sterilized is placed, it is possible to prevent the condensed water of the steam from falling onto the article to be sterilized in the lower shelf. In addition, it is possible to prevent the received water from remaining on the fall prevention plate, prevent poor drying of the article to be sterilized, and ensure the safety of the operator.

It is the schematic side view which showed the state with which the inner trolley | bogie which has the shelf to which the shelf structure for steam sterilization of one Example of this invention was applied was taken in / out by the outer trolley | bogie and a sterilization tank. It is a schematic perspective view which shows the state in which the inner trolley | bogie was mounted on the outer trolley | bogie of FIG. It is a schematic perspective view which shows the fall prevention board of the inner trolley | bogie of FIG. It is a figure which shows the modification of the fall prevention board of FIG. It is a figure which shows the modification of the fall prevention board of FIG. It is a figure which shows the modification of the fall prevention board of FIG. It is a figure which shows the modification of the fall prevention board of FIG. It is a figure which shows the modification of the fall prevention board of FIG. It is a figure which shows the modification of the fall prevention board of FIG. It is a figure which shows the modification of the fall prevention board of FIG. It is a figure which shows the modification of the fall prevention board of FIG. It is a schematic longitudinal cross-sectional view which shows an example of the attachment structure of the fall prevention board to a shelf material.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an inner carriage 2 having a plurality of upper and lower shelves 1 on which an article to be sterilized is placed, an outer carriage 3 on which the inner carriage 2 is placed and conveyed, and the inner carriage 2 between the outer carriage 3 It is a schematic side view which shows the steam sterilizer 4 to be performed.

  The inner carriage 2 is carried on the outer carriage 3 and is moved between the outer carriage 3 and the sterilization tank 5 and put in and out. For this purpose, the steam sterilizer 4 is provided with a guide rail 6 at the bottom of the sterilization tank 5, and the wheels 7 of the inner carriage 2 travel on the guide rail 6. The outer carriage 3 is also provided with a guide rail 9 on the pedestal 8, and the wheels 7 of the inner carriage 2 travel on the guide rail 9. The outer carriage 3 is allowed to travel by a caster 10 provided at the bottom of the base 8. Since the outer carriage 3 is provided with the handle 11, the outer carriage 3 can be driven with the handle 11.

  The steam sterilizer 4 is an apparatus that supplies steam into the sterilization tank 5 to sterilize an object to be sterilized in the sterilization tank 5. The steam sterilizer 4 can adopt various conventionally known configurations and controls regardless of the specific configuration and control thereof. Typically, the steam sterilizer 4 is opened to the front (right side in FIG. 1) and the opening can be opened and closed by a door, and the gas in the sterilization tank 5 is sucked and discharged to the outside. Decompression means (not shown) for depressurizing the inside of the sterilization tank 5, return pressure means (not shown) for introducing outside air into the depressurized sterilization tank 5 and restoring the pressure inside the sterilization tank 5, and steam into the sterilization tank 5 Steam supply means (not shown) for supplying water, drain discharge means (not shown) for draining water from the inside of the sterilization tank 5 through a steam trap, and the gas in the sterilization tank 5 to the outside due to a differential pressure from the atmospheric pressure The exhaust means to lead out, the pressure sensor (illustration omitted) which detects the pressure in the sterilization tank 5, and the temperature sensor (illustration omitted) which detects the temperature in the sterilization tank 5 are provided.

  Then, after the air is removed from the sterilization tank 5, the inside of the sterilization tank 5 is maintained at a predetermined pressure with steam to sterilize the object to be sterilized, and thereafter, the object to be sterilized is operated to be dried. . The air is excluded from the inside of the sterilization tank 5 by, for example, reducing the pressure inside the sterilization tank 5 by a decompression unit. Thereafter, the sterilization process is started by increasing the pressure in the sterilization tank 5 with steam by the steam supply means while the decompression means is stopped. In this sterilization process, the temperature in the sterilization tank 5 is monitored by a temperature sensor, and the steam supply to the sterilization tank 5 by the steam supply means is controlled so as to maintain the sterilization temperature for a predetermined sterilization holding time. Thereafter, after the steam is discharged from the sterilization tank 5 by the exhaust means, the object to be sterilized is dried for a set time. For example, the inside of the sterilization tank 5 is depressurized to a predetermined pressure by the depressurization means, and the object to be sterilized in the sterilization tank 5 is dried by maintaining the pressure under the reduced pressure.

  In this manner, the steam sterilizer 4 sequentially executes the air exclusion process, the sterilization process, and the drying process. Further, the steam sterilizer 4 includes a steam jacket (not shown) in order to heat the inside of the sterilization tank 5 from the outside and maintain it at a desired temperature. As a preheating step before the air exclusion step, steam is supplied to the steam jacket to preheat the sterilization tank 5. And the heating and holding in the sterilization tank 5 by such a steam jacket is continuously performed from the subsequent air exclusion process to the drying process.

  FIG. 2 is a schematic perspective view showing a state where the inner carriage 2 is placed on the outer carriage 3. As described above, the inner carriage 2 is placed on the outer carriage 3 and can be transported, and is taken in and out between the outer carriage 3 and the sterilization tank 5. The inner cart 2 includes a plurality of shelves 1 in the vertical direction, and the shelf structure for steam sterilization of the present invention is applied to one or a plurality of shelves 1. Here, the shelf structure for steam sterilization of the present embodiment is applied to each shelf 1 excluding the lowest shelf. 1 and 2, the three shelves 1 are provided at the top and bottom, but it goes without saying that the number of the shelves 1 can be changed as appropriate.

  The inner bogie 2 is provided with support columns 12 at the four corners of the front, rear, left and right along the vertical direction, and a plurality of shelves 1 are held on these support columns 12 with a space in the vertical direction. At this time, each shelf 1 is provided at a lower portion of the shelf member 13 on which the article to be sterilized is placed and prevents the condensed water of the vapor from dropping to the article to be sterilized on the lower shelf member 13. And a fall prevention plate 14. However, only the shelf material 13 is provided in the lowest shelf 1 and the installation of the fall prevention plate 14 can be omitted.

  The shelf member 13 is formed by combining wire rods in the present embodiment. Specifically, the four pillars 12 have a quadrangular shape whose four corners are held, and the inside thereof is arranged with a wire in a lattice shape. However, the shelf member 13 may be formed by finely arranging the wire rods in a net shape, or may be formed by a perforated plate such as punching metal, that is, a plate member in which a large number of small holes are formed.

  The fall prevention plate 14 receives the condensate to be sterilized placed on the shelf 13 above and the condensed water dripping from the shelf 13 so that the condensate falls to the sterilization of the bottom shelf 13. To prevent. The fall prevention plate 14 is typically a rectangular plate material, and its four corners are held by the support column 12 in FIG. The fall prevention plate 14 is preferably formed to be equal to or larger than the shelf member 13 in plan view. Although the fall prevention plate 14 may be a horizontal flat plate, it is preferably formed so as to have an inclined surface 16 or inclined so as to form the inclined surface 16 as described later. The fall prevention plate 14 is provided so as to be overlapped immediately below each shelf member 13 excluding the lowermost shelf member 13.

  The shelf member 13 is held on the support column 12 by an appropriate method, and the fall prevention plate 14 is held on the shelf material 13 or the support column 12 by an appropriate method. For example, pipes 15 are fixed to the four corners of the shelf member 13 and the fall prevention plate 14, and the pipes 15 are fitted to the support columns 12 and fixed to a desired height. However, the shelf member 13 and the fall prevention plate 14 may be fixed to the common pipe 15 at each of the four corners, and the shelf member 13 and the fall prevention plate 14 may be handled as an integral unit. Further, the inner carriage 2 may be assembled while the pipes 15 provided at the four corners of the shelf member 13 and the fall prevention plate 14 constitute a part of the support column 12. Furthermore, the four corners of the shelf member 13 and the fall prevention plate 14 may be simply welded to the support 12 of the inner carriage 2 or hooked on hooks provided on the support 12. In addition, as will be described later, the fall prevention plate 14 may be held on the support 12 via the shelf 13 by holding the fall prevention plate 14 on the shelf 13.

  The fall prevention plate 14 is formed from aluminum subjected to anticorrosion treatment. Typically formed from anodized aluminum. By forming from aluminum, thermal conductivity is increased compared to the case of forming from stainless steel, and evaporation can be promoted even if the condensed water of the steam does not flow down from the fall prevention plate 14.

  The fall prevention plate 14 is not particularly limited as long as it is made of anticorrosion-treated aluminum. For example, the fall prevention plate 14 may have the following configuration.

  In the case of FIG. 3, the fall prevention plate 14 is a rectangular plate material bent into a mountain shape. More specifically, in the case of the illustrated example, the rectangular portion in the width direction (left-right direction) is bent along a line along the longitudinal direction (front-rear direction) to form a mountain shape. In this case, the inclined surfaces 16 and 16 that are inclined downward as going outward in the left-right direction are arranged on the left and right. However, it may be formed in a mountain shape by a line along the width direction in the central portion in the longitudinal direction of the rectangle. In this case, the inclined surfaces 16 and 16 which incline downward as going outward in the front-rear direction are arranged in the front-rear direction. In any case, the condensed water of the steam is caused to flow down to the left and right sides or the front and rear sides by the action of the inclined surface 16 of the fall prevention plate 14. 1 and 2 show an example using the fall prevention plate 14 of FIG.

  In the case of FIG. 4, the fall prevention plate 14 is formed in a quadrangular pyramid shape and has inclined surfaces 16 on the front, rear, left and right. The front and rear inclined surfaces 16 are inclined downward as they go outward in the front-rear direction. Further, the left and right inclined surfaces 16 are inclined downward as they go outward in the left-right direction. In the case of such a configuration, the condensed water of the steam is caused to flow back and forth and right and left by the action of the inclined surface 16 of the fall prevention plate 14.

  In the case of FIG. 5, the fall prevention plate 14 is a rectangular plate material composed of a simple flat plate, but is disposed at an inclination. In the case of the illustrated example, the fall prevention plate 14 is provided not to be horizontal but to be inclined downward as it goes to the right side. However, it may be inclined downward as it goes to the left, or it may be inclined forward or backward rather than left and right, and downward as it goes forward or backward. In such a configuration, the condensed water of the steam is caused to flow down to the left and right sides or the front and rear sides by the action of the inclined surface 16 of the fall prevention plate 14.

  The fall prevention plate 14 may be configured to collect and condense the steam condensate at one or a plurality of corners among the four corners. For example, in the case of FIG. 6, an upward rising piece 17 is formed along the right end side of the fall prevention plate 14 of FIG. 5, and the front side is arranged to be lower. In the case of such a configuration, the condensed water of the steam is collected by the fall prevention plate 14 at the front right corner. Condensate collected at the corners in this way may simply be flowed down, but preferably it is flowed down through the pillars 12 arranged at the corners, or it is outside the pillars 12 but the pillars. 12 is allowed to flow downward.

  In FIG. 6, a reverse cone-shaped receiving material 18 is provided on the pipe 15 at the front right corner, and the condensed water collected in the receiving material 18 is poured. A gap between the lower portion of the receiving member 18 and the outer peripheral surface of the pipe 15 is closed. In addition, an opening is formed in the peripheral side wall of the pipe 15 or the column 12 at a position corresponding to the lower part in the receiving member 18 in a state where the fall prevention plate 14 is provided on the column 12. Accordingly, the water received by the receiving material 18 is passed into the support column 12, dropped to the lower side of the inner carriage 2 through the support column 12, and discharged from the opening below the support column 12.

  In FIG. 6, the water is collected at the front right corner, but the water can be collected at other corners in the same manner. For example, when water is to be collected at the rear left corner, an upward rising piece 17 is provided along the left edge of the fall prevention plate 14, and the fall prevention plate 14 is inclined downward as it goes to the left. It may be arranged so as to lower. Here, the pipe 15 is provided on the fall prevention plate 14, the receiving material 18 is provided on the pipe 15, and the pipe 15 is provided on the support 12. However, the pipe 15 constitutes the support 12 itself while constituting the support 12 itself. When the carriage 2 is assembled or the fall prevention plate 14 is attached to the support column 12 without the pipe 15 interposed therebetween, the receiving member 18 may be provided directly on the support column 12. In that case, an opening is formed in the peripheral side wall of the support column 12 at a position corresponding to the lower part in the receiving member 18.

  Since the case of FIG. 7 is the same as that of FIG. 6, different points will be mainly described. In the case of FIG. 6, the fall prevention plate 14 is bent in an L shape. However, in the case of FIG. 7, the fall prevention plate 14 has a shallow V shape with a diagonal line connecting the front right corner and the rear left corner. In addition to being bent, the right half region is bent into a shallower V shape. In this way, the condensed water of the steam is collected at the front right corner by the fall prevention plate 14 and is allowed to flow downward. Also in this case, similarly to FIG. 6, the water may be collected not at the front right corner but at another corner.

  The configuration for collecting and flushing water at the corners of the fall prevention plate 14 is not limited to the configurations of FIGS. 6 and 7 and can be changed as appropriate. That is, it is possible to appropriately change how the condensed water is collected and poured downward in which corner of the four corners of the fall prevention plate 14.

  Moreover, as shown in FIG. 8, it is good also as a structure which collects vapor | steam condensed water in several corner | angular parts among the four corners of the fall prevention board 14, and lets it flow down below. In the case of FIG. 8, the fall prevention plate 14 is bent in a mountain shape as in FIG. 3, but further, rising pieces 17 are formed along the left and right ends, and the front is lowered. Be placed. In such a configuration, the condensed water of the steam is collected by the fall prevention plate 14 at the left and right corners on the near side and dropped downward.

  In either case, the condensed water collected at the corner of the fall prevention plate 14 may simply be flowed down, but preferably it is flowed down through the column 12 disposed at the corner, or the column. Although it is outside 12, it is washed down along the column 12. In the case of FIG. 8, similarly to FIG. 6 and FIG. 7, the receiving material 18 is used to flow down through the left and right columns 12. However, in FIGS. 6 and 7, the receiving member 18 has an inverted conical shape and is arranged around the entire circumference of the pipe 15. However, in FIG. 8, the receiving member 18 is only at a position corresponding to the corner of the fall prevention plate 14. Is provided. The receiving material 18 of FIG. 8 may be used for the fall prevention plate 14 of FIGS. 6 and 7, and conversely, the receiving material 18 of FIGS. 6 and 7 may be used for the fall prevention plate 14 of FIG. 8.

  In the case of FIG. 9, the fall prevention plate 14 is provided with a steam pipe 19 through which steam passes. Here, the fall prevention plate 14 is bent in a mountain shape as in FIG. 3, and steam pipes 19 are provided along the left and right ends thereof. At this time, it is preferable to fix the upper part of the peripheral side wall of the steam pipe 19 to the lower surface of the inclined surface 16 of the fall prevention plate 14 so as not to disturb the drop of condensed water from the inclined surface 16 of the fall prevention plate 14. In the case where the steam pipe 19 is provided, even if the condensed water remains without flowing down the fall prevention plate 14, the steam flows into the steam pipe 19 and is discharged in the drying process (specifically, the steam is discharged from one end of the steam pipe 19. Heat can be applied to the fall prevention plate 14 and the condensed water on the fall prevention plate 14 can be evaporated by the amount of heat.

  By the way, the installation position of the steam pipe 19 is not limited to FIG. For example, the steam pipe 19 may be installed so as to meander on the lower surface of the fall prevention plate 14. In that case, even if the fall prevention plate 14 is formed of a horizontal flat plate, the condensed water can be evaporated from the entire fall prevention plate 14.

  In the case of FIG. 10, an electric heater 20 is provided on the fall prevention plate 14. Here, the fall prevention plate 14 is bent in a mountain shape as in FIG. 3, and a sheet-like heater 20 is attached to the lower surfaces of the left and right inclined surfaces 16. In such a configuration, even if condensed water remains without flowing down the fall prevention plate 14, the heater 20 can be energized in the drying process to apply heat to the fall prevention plate 14. The condensed water on the plate 14 can be evaporated.

  In the case of FIG. 11, the heat transfer fins 21 are provided on the fall prevention plate 14. Here, the fall prevention plate 14 is bent in a mountain shape as in FIG. 3, and a plurality of fins 21 protrude downward from the lower surfaces of the left and right inclined surfaces 16. The installation position, size, shape, and number of fins 21 can be changed as appropriate. In the case of such a configuration, even if condensed water remains without flowing down the fall prevention plate 14, the amount of radiant heat transfer to the fall prevention plate 14 is increased by the fins 21 of the fall prevention plate 14, and the fall prevention plate 14 is increased by the amount of heat. The condensed water above can be evaporated.

  In addition, the fall prevention plate 14 may be formed in black. Specifically, the fall prevention plate 14 may be formed in black by performing black alumite treatment or the like on the aluminum base. At this time, the upper surface of the fall prevention plate 14 is preferably formed in black, but the lower surface is preferably formed in black if desired. By forming the fall prevention plate 14 in black, the amount of radiant heat to the fall prevention plate 14 can be increased in the preheating step and the drying step. By warming the fall prevention plate 14 in the preheating process, it is possible to reduce the amount of condensed water in the steam in the subsequent sterilization process or the like. In the drying process, evaporation of the condensed water adhering to the fall prevention plate 14 can be promoted.

  Further, the top surface of the fall prevention plate 14 may be subjected to water repellent treatment. For example, a fluorine resin coating or a silicon resin coating may be applied to the upper surface of the fall prevention plate 14. In this case, water drops easily flow down from the fall prevention plate 14, and even if water drops remain on the fall prevention plate 14, the drop prevention plate 14 is urged to drop off in the drying process. That is, the water droplets flow down due to the force when a part of the water droplets evaporate, or easily flow down due to the flow of air or steam.

  Further, the top surface of the fall prevention plate 14 may be subjected to a hydrophilic treatment. For example, a photocatalytic coating may be applied to the upper surface of the fall prevention plate 14. In this case, it is possible to promote evaporation from the fall prevention plate 14 in the drying process by destroying the surface tension of the water droplets falling on the fall prevention plate 14 and thinning the water film adhering to the fall prevention plate 14.

  The shelf structure for steam sterilization according to the present invention is not limited to the configuration of the above embodiment, and can be changed as appropriate. In particular, the shape, size, direction of inclination, magnitude of inclination, method of attachment to the column 12, presence / absence of water collection at the corners, etc. can be changed as appropriate.

  For example, in the above-described embodiment, the fall prevention plate 14 is held directly on the support 12, but the fall prevention plate 14 may be held on the support 12 via the shelf 13. FIG. 12 is a schematic longitudinal sectional view showing an example of a structure for attaching the fall prevention plate 14 to the shelf material 13. Also in this example, the shelf member 13 is formed by a combination of wires, as in FIG. 2, and a reinforcing member 22 is provided along the front-rear direction at the center in the left-right direction on the lower surface. 2 and 3, the fall prevention plate 14 is formed by bending one rectangular plate material into a mountain shape, but in FIG. 12, two rectangular plate materials 23, 23 are arranged in a mountain shape. Is done. In other words, each plate member 23 has one end fixed to the upper portion of the reinforcing member 22 and the other end fixed to the lower portion of the downward extending portion 24 provided at the left and right ends of the shelf 13. In this manner, the fall prevention plate 14 formed in a mountain shape by the two plate members 23 and 23 is held at the lower portion of the shelf member 13. In FIG. 12, the inclined surfaces 16 and 16 are arranged on the left and right, but the inclined surfaces 16 and 16 may be arranged on the front and rear. Moreover, holding the fall prevention plate 14 on the shelf member 13 as shown in FIG. 12 is not limited to the fall prevention plate 14 in FIG. 3, and is similarly applicable to the fall prevention plate 14 in FIG.

  Moreover, you may use each structure of FIGS. 3-12, and a black process, a water repellent process, or a hydrophilic process in combination with each other. For example, the fall prevention plate 14 of various shapes may have a black upper surface and may be subjected to water repellent treatment or hydrophilic treatment. Moreover, in the fall prevention plate 14 of various shapes, the lower surface may be black and the upper surface may be subjected to water repellent treatment or hydrophilic treatment. Furthermore, the steam pipe 19, the heater 20, or the fin 21 can be similarly applied not only to the mountain-shaped fall prevention plate 14 but also to other shapes of fall prevention plates 14.

  In the above embodiment, the object to be sterilized is placed on the inner carriage 2 and the inner carriage 2 is put in and out between the sterilization tank 5 and the outer carriage 3, but the outer carriage 3 is omitted and the inner carriage 2 is sterilized. The tank 5 may be directly put in and out by a caster. Alternatively, a shelf 1 may be provided in the sterilization tank 5 itself, and an object to be sterilized may be directly taken in and out of the shelf 1.

  Furthermore, in the said Example, when collecting condensed water on the corner | angular part of the fall prevention plate 14 and pouring it down, the receiving material 18 was provided, However, the receiving material 18 was abbreviate | omitted and only the corner | angular part of the fall prevention plate 14 was provided. May be arranged in a hole formed in the peripheral side wall of the support column 12 so that water flows directly into the support column 12 from the fall prevention plate 14. In addition, when flowing along the outer surface of the support column 12, an appropriate guide may be provided along the outer surface of the support column 12. When the shelf 1 is provided in the sterilization tank 5 itself, a pipe or an L-shaped material enclosure is provided at the corner of the sterilization tank 5, and this is used as a support column 12 to drop water therein. Also good.

DESCRIPTION OF SYMBOLS 1 Shelf 2 Inner trolley 3 Outer trolley 4 Steam sterilizer 5 Sterilization tank 12 Strut 13 Shelf material 14 Fall prevention plate 16 Inclined surface 18 Receiving material 19 Steam pipe 20 Heater 21 Fin

Claims (10)

A shelf provided in a sterilization tank of a steam sterilizer, or a shelf to be taken in and out of the sterilization tank,
A shelf formed by a combination of wire rods or a perforated plate and on which an article to be sterilized is placed;
Provided in the lower part of this shelf, provided with a fall prevention plate that prevents the condensed water of the steam from falling to the object to be sterilized in the lower shelf,
The shelf structure for steam sterilization, wherein the fall prevention plate is made of anticorrosive aluminum. The fall prevention plate is formed in a quadrangular pyramid shape to flow the steam condensate from front to back and left to right, or is formed in a mountain shape from a square plate material to flow the steam condensate from the left and right sides or both the front and rear sides. The shelf structure for steam sterilization according to claim 1, wherein the rectangular plate material is disposed so as to be inclined so that the condensed water of steam flows down to the left and right sides or the front and rear sides. 2. The shelf structure for steam sterilization according to claim 1, wherein the fall prevention plate collects steam condensate at one or a plurality of corners among the four corners and causes the condensed water to flow downward. 4. The shelf structure for steam sterilization according to claim 3, wherein the condensed water collected at the corners is caused to flow downward through the inside of the support column, or to flow downward along the support column but outside the support column. The shelf structure for steam sterilization according to any one of claims 1 to 4, wherein the fall prevention plate is formed in black. The shelf structure for steam sterilization according to any one of claims 1 to 5, wherein the fall prevention plate has a water repellent treatment on an upper surface. The shelf structure for steam sterilization according to any one of claims 1 to 5, wherein the fall prevention plate is subjected to a hydrophilic treatment on an upper surface. The shelf structure for steam sterilization according to any one of claims 1 to 7, wherein a pipe through which steam is passed is provided in the fall prevention plate. The shelf structure for steam sterilization according to any one of claims 1 to 7, wherein a heater is provided on the fall prevention plate. The shelf structure for steam sterilization according to any one of claims 1 to 7, wherein the fall prevention plate is provided with fins on a lower surface.

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