JP2004089423A - Washer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washer capable of preventing a washed matter from being recontaminated after cleaning process and superior in safety and reliability. <P>SOLUTION: The washer comprises a rotary drum 2 provided with an inlet opening 2c at one circular end and an outlet opening 2e at the other circular end, a support shaft 51 of which the base end is fixed at the one end of the rotary drum and having a penetration hollow part 50, a through-in door 35 arranged at a position facing the opening at the tip end of the support shaft, and an extraction door 36 arranged at a position facing the outlet opening of the rotary drum. Washed matter is contained in the rotary drum through the penetration hollow part of the support shaft by opening the through-in door, and extracted from the outlet by opening the extraction door. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a washing machine suitable for cleaning objects to be washed, such as nursing clothes and surgical gowns used in medical institutions, and work clothes worn in a clean room, for which high cleanliness is required.
[0002]
[Prior art]
Nursing clothes, surgical gowns, and the like used in medical institutions are not only washed, but also disinfected and sterilized in order to prevent secondary infection and reused. In addition, while precision parts such as semiconductor parts and liquid crystals are handled in the production, inspection, shipping and the like in a clean room, working clothes worn in the clean room are cleaned and reused.
[0003]
In a conventional general cleaning machine, a rotating drum for accommodating an object to be cleaned is provided in an outer shell, a spindle is fixed to one circular end surface of the rotating drum, and the spindle is passed through a bearing to separate the rotating drum. An open / close door is provided on the outer body located on the opposite side of the support shaft, and the open / close door is opened to load the object to be cleaned into the rotating drum. In this configuration, the door is opened and the object to be cleaned is taken out.
[0004]
Then, when disinfecting and sterilizing the object to be cleaned, the contaminated object to be cleaned is disinfected and sterilized by heating the cleaning liquid to a predetermined temperature or more and holding it for a certain period of time or adding a disinfectant to the cleaning liquid. I do.
[0005]
In addition, when performing the drying of the object to be cleaned, the cleaning liquid and the disinfecting liquid are discharged, the rotating drum is rotated to remove the liquid contained in the object to be cleaned by centrifugal force, and at the time of the drying process, By supplying hot air into the outer body and rotating the rotary drum, the object to be cleaned after the dewatering process is dried.
[0006]
[Problems to be solved by the invention]
However, in the case of the conventional washing machine, the opening and closing door is opened, a contaminated object such as clothing is thrown into the rotating drum, and the opening and closing door is closed to clean, sterilize, disinfect, etc. the object to be washed. After performing the process, the same open / close door is opened again to take out the processed object to be cleaned from the inside of the rotating drum, so that the contaminated object to be cleaned has been properly cleaned through predetermined processing steps. However, since the rotary drum has the same entrance and exit and the opening and closing doors are the same, there is a possibility that the object to be cleaned after the cleaning process is again contaminated.
[0007]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a cleaning method which can effectively prevent the object to be cleaned after the cleaning treatment from being contaminated again, and which is excellent in safety and reliability. Is to offer a machine.
[0008]
[Means for Solving the Problems]
The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 has a rotation axis centered sideways, a plurality of through holes on a peripheral surface, and an inlet opening on one circular end surface. A rotating drum for opening an opening opening on the other circular end face and containing an object to be cleaned,
A cylindrical support shaft having a base end fixed to the center of one circular end surface of the rotating drum, the base end side opening having a through hollow portion communicating with the inlet opening;
An outer shell that houses the rotating drum and can store a cleaning liquid at a lower portion,
Driving means for driving the rotary drum to rotate,
An opening / closing door that is openably and closably disposed at a position facing the opening on the tip side of the support shaft,
A take-out opening / closing door that is openably and closably disposed at a position facing the outlet opening of the rotating drum,
With
Opening the opening / closing door, storing the object to be cleaned in the rotary drum through the through hollow portion of the support shaft, and opening the opening / closing door for cleaning to allow the object to be cleaned to be taken out from the outlet. Features.
[0009]
According to a second aspect of the present invention, there is provided the washing machine according to the first aspect, wherein a linear projection is formed on the inner peripheral surface of the through hollow portion of the support shaft along a spiral track.
[0010]
According to a third aspect of the present invention, the opening / closing door and the take-out opening / closing door are arranged inside the partition so that they respectively face separate rooms separated by the partition. Item 6. A washing machine according to Item 2.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic front view of an embodiment of the washing machine according to the present invention, FIG. 2 is a schematic side view thereof, and FIG. 3 is a sectional view of a portion indicated by AA in FIG. In the following description, for convenience, the front side in FIG. 1 is described as the front side or the front side, and the back side is described as the rear side or the rear side.
[0012]
As shown in these drawings, a washing machine 1 of the present embodiment is a horizontal washing machine in which a rotating shaft of a rotating drum 2 is arranged horizontally, and has a washing function, a disinfecting / sterilizing function, a dewatering function, and a drying function. As a so-called one-way type washing machine, an object to be cleaned such as a surgical gown or a work gown can be put into the rotary drum 2 from an inlet opened in one axial direction and taken out from an outlet opened in the other axial direction. This is characterized in that a through hollow portion is opened in the support shaft of the rotary drum 2 and doors are provided on both sides of the apparatus.
[0013]
That is, the washing machine 1 is provided with a cylindrical outer drum 5 for storing a cleaning liquid at the time of cleaning in a central portion in a housing 4 and a cylindrical rotary drum 2 in the outer drum 5 in a horizontal direction. When storing and cleaning, the cleaning object is stored in the rotary drum 2 and the cleaning liquid is supplied into the outer shell 5 to rotate the rotary drum 2 to clean the contaminated cleaning object such as cleaning. It is made up of Further, at the time of disinfection / sterilization processing, the object to be cleaned is disinfected / sterilized by heating the cleaning liquid in the outer shell 5 to a predetermined temperature or higher and holding it for a certain time, or by adding a disinfectant to the cleaning liquid in the outer shell 5. After the cleaning liquid and the disinfecting liquid are further discharged from the outer shell 5, the rotary drum 2 is rotated to remove the liquid contained in the object to be cleaned by centrifugal force, and hot air is supplied into the outer shell 5. By rotating the rotary drum 2, the object to be cleaned after the dewatering process is dried.
[0014]
The outer shell 5 is provided at a substantially central portion of the housing 4 in the washing machine 1 of the present embodiment, and has circular openings 6 and 7 at the front and rear surfaces, respectively, as shown in FIG. A substantially cylindrical bearing bracket 3 is attached to the rear surface so as to communicate with the opening, and is disposed on a gantry 9 via a vibration isolating spring 8 at the lower front left and right and rear left and right. A shock absorber 10 is stretched over the gantry 9 to absorb an impact due to an eccentric load or the like.
[0015]
A liquid supply pipe 11 for supplying a cleaning liquid into the outer body 5 at the time of cleaning the object to be cleaned is connected to the upper center of the outer body 5, and this liquid supply pipe 11 is located slightly upstream of the outlet. A water supply pipe 11a for supplying water and a water supply pipe 11b for supplying hot water are connected, and switching valves 12a and 12b are provided on the water supply pipe 11a and the hot water supply pipe 11b, respectively, for switching and supplying water and hot water. ing.
[0016]
A chemical solution supply pipe 13 for supplying a chemical solution into the outer body 5 at the time of disinfecting and sterilizing the object to be cleaned is connected to one side of the outer body 5, and the chemical solution supply pipe 13 is located slightly upstream of the outlet. On the side, the branch supply pipes 13a and 13b are branched into a plurality of branch supply pipes 13a and 13b, and the branch supply pipes 13a and 13b are provided with switching valves 14a and 14b, respectively, in order to switch and supply several kinds of chemicals. The disinfecting / sterilizing chemical supplied from the chemical supply pipe 13 into the outer shell 5 includes a chemical used alone instead of the cleaning water and cleaning water supplied from the liquid supply pipe 11 and a cleaning water such as cresol. There is a mixture to be added to the washing water.
[0017]
A drain pipe 15 is connected to the lower part of the outer body 5 downward, and the drain pipe 15 is provided with a drain valve 17 via a bellows pipe 16. Therefore, by opening the drain valve 17, the cleaning liquid or the disinfecting liquid stored in the outer shell 5 can be discharged.
[0018]
An outside air introduction pipe 18 for introducing outside air into the outside body 5 is connected to an upper left front portion of the outside body 5, and a heating means 20 is provided at a distal end portion of the outside air introduction pipe 18 via a bellows pipe 19. Have been. In the present embodiment, a gas burner is employed as the heating means 20, but the invention is not limited to this, and another type of heating means such as an electric heater may be employed. Note that a filter (not shown) for purifying gas introduced into the outer shell 5 is provided at an appropriate position in the outside air introduction pipe 18. On the other hand, an exhaust pipe 21 is connected to the upper right rear portion of the outer shell 5, and a suction means 23 for exhausting the gas in the outer shell 5 via a bellows pipe 22 is provided at the tip of the exhaust pipe 21. ing. In the present embodiment, a sirocco fan rotationally driven by the motor 24 is employed as the suction means 23, but the present invention is not limited to this, and another type of fan or the like may be employed.
[0019]
Therefore, when the suction means 23 is operated, an air flow is generated from the outside air introduction pipe 18 through the inside of the outer body 5 to the exhaust pipe 21, and the outside air is supplied into the outer body 5 while being heated by the heating means 20. In addition, the object to be cleaned can be dried in the outer shell 5. A temperature detecting means (not shown) for detecting the internal temperature is provided in the outer shell 5, and the drying temperature is controlled by the temperature detecting means.
[0020]
A heater 25 for heating the cleaning water supplied from the liquid supply pipe 11 or heating or maintaining the temperature of the cleaning water supplied from the liquid supply pipe 11 is provided at a lower front portion in the outer body 5. I have. Further, a steam inlet pipe 26 for blowing steam into the outer shell 5 is connected to a lower rear portion inside the outer shell 5. The steam blown from the steam inlet pipe 26 heats the washing water or the washing water. It is made to be able to maintain the temperature of the hot water.
[0021]
The rotary drum 2 is a cylindrical member that rotates while accommodating an object to be cleaned, has a plurality of small through-holes 2a formed on its peripheral surface, and has an inlet opening 2c formed on one circular end surface (rear end surface) 2b. An outlet opening 2e is opened in the other circular end surface (front end surface) 2d, and the center is made coincident with the end surface 2b in which the inlet opening 2c is opened, and the hollow hollow portion 50 is communicated with the inlet opening 2c. In this state, the base end of the cylindrical support shaft 51 is fixed. In addition, on the inner surface of the peripheral wall of the rotating drum 2, projections 2f for stirring are provided at equal intervals in the circumferential direction.
[0022]
The cylindrical support shaft 51 is a support shaft that rotates integrally with the rotary drum 2, and has a hollow through-hole 50 that communicates with the inlet opening 2 c of the rotary drum 2 inside, and is provided on the inner peripheral surface of the bearing bracket 3. The rotary drum 2 is rotatably supported by an oil seal 28 and a bearing 29 provided, and is rotatably driven via a V-belt 34 by a motor 27 as a drive source via a pulley 30 attached to an outer peripheral portion. Is configured to be able to rotate forward and backward, and to rotate at low speed and high speed. Therefore, the driving means of the rotary drum 2 in the present embodiment is constituted by the motor 27, the V belt 34, and the pulley 30.
[0023]
The inner peripheral surface of the cylindrical support shaft 51 is formed so as to be inclined so as to gradually increase in diameter toward the inlet opening 2c of the rotary drum 2, and further has a plurality of linear projections on the inner peripheral surface. Numerals 52 are formed along the spiral track, and the linear projections 52 can sequentially introduce an object to be cleaned to the rotary drum 2 side like a screw conveyor as the rotary drum 2 rotates. .
[0024]
Further, the housing 4 has an opening / closing door 35 at a position facing the opening on the distal end side of the support shaft 51, and a takeout opening / closing door 36 at a position facing the outlet opening 2 e of the rotary drum 2. It is provided to be openable and closable by a hinge mechanism (not shown) and locking mechanisms 31 and 32 with a lock mechanism. Since the opening and closing doors 35 and 36 are in close contact with the housing 4 via the sealing members 41 and 42, the cleaning liquid does not leak to the outside in the closed state. 32 is locked so that it is not opened carelessly.
[0025]
As shown in FIG. 2, the cleaning machine 1 of the present embodiment is configured such that the opening / closing door 35 and the opening / closing door 36 face the separate rooms separated by the partition walls 37a and 37b, respectively, so that the inside of the partition walls 37a and 37b. It is preferable to dispose them in For example, the opening / closing door 35 faces the dirty room 38 for handling the object to be cleaned before the cleaning process, and the opening / closing door 35 for the clean room 39 for handling the object to be cleaned after the cleaning, disinfection, sterilization, and the like. 36 and face it. With this installation, the object to be cleaned after the aseptic / cleaning process is not contaminated again, and safety and reliability can be ensured.
[0026]
Next, the operation of the washing machine 1 of the present embodiment will be described.
First, the opening / closing door 35 is opened, and an object to be cleaned is thrown into the hollow hollow portion 50 of the cylindrical support shaft 51. After the closing door 35 is closed, the operation start button (not shown) on the operation panel 40 is operated. When the operation start button is operated, the control device (not shown) confirms that both the open / close doors 35 and 36 are closed, starts the motor 27, and thereby rotates the rotary drum 2. When the rotary drum 2 rotates forward, as described above, the plurality of linear projections 52 are formed on the inner peripheral surface of the cylindrical support shaft 51 along the spiral track, so that the hollow through the cylindrical support shaft 51 is hollow. Even if there is an object to be cleaned on the inner peripheral surface of the unit 50, the object to be cleaned is conveyed toward the rotating drum side as in a screw conveyor with the rotation thereof, and is automatically introduced into the rotating drum. become. In addition, when the object to be cleaned thrown from the opening 53 falls into the hollow through-hole 50 of the support shaft 51 without reaching the inside of the rotary drum 2, the linear protrusion 52 moves the object to be cleaned inside the rotary drum 2. It is for surely sending it to. Therefore, it is desirable that the object to be cleaned be directly put into the rotary drum 2 from the opening 53 through the hollow through-hole 50.
[0027]
Further, when the operation start button is pressed, the control device opens the switching valve 12, so that cleaning water or cleaning water is supplied into the outer body 5 from the liquid supply pipe 11 as the cleaning liquid. The rotation drum 2 may start rotating after the supply of the cleaning liquid is completed. Further, depending on the type of the object to be cleaned, cleaning water or cleaning water may be supplied and a chemical solution may be supplied from the chemical solution supply pipe 13 into the outer shell 5, or only the chemical solution may be supplied. In short, the type and supply order of the cleaning liquid may be set according to the type of the object to be cleaned and the purpose of cleaning.
[0028]
In the case of disinfection and sterilization, the cleaning liquid in the outer shell 5 is heated to a predetermined temperature or higher by a heater 25 provided in the lower front portion of the outer shell 5, and the heating temperature is maintained for a certain period of time. Processing may be performed. Further, when a steam inlet pipe 26 for blowing steam into the outer shell 5 is connected to a lower portion inside the outer shell 5, the washing water or the washing water is also supplied by the steam blown from the steam inlet pipe 26. Heating, maintaining the temperature of the hot water, or discharging the cleaning water or cleaning water in the outer shell 5 and injecting only steam may perform the disinfection / sterilization treatment.
[0029]
When the disinfection / sterilization processing is completed, a rinsing step is performed as necessary, the drain valve 17 is opened, the cleaning liquid and the disinfecting liquid in the outer shell 5 are drained, and the processing sequentially shifts to the dewatering processing and the drying processing. Will be. In the dewatering process, the rotating drum 2 is rotated at a high speed with the drain valve 17 opened to remove liquid components contained in the object to be cleaned by centrifugal force.
[0030]
The drying process is performed by sucking the gas in the outer shell 5 with a sirocco fan as suction means 23 provided at the end of the exhaust pipe 21, and supplying hot air into the outer shell 5 from the outside air introduction pipe 18. Done.
[0031]
Then, when all the processes are completed, the takeout opening / closing door 36 is opened, and the object to be cleaned in the rotary drum 2 is taken out. In this manner, the take-out opening / closing door 36 is opened, and the cleaned object to be cleaned is taken out from the outlet opening 2e of the rotary drum 2 into the clean room 39. Since it can be taken out without passing through, it is prevented from being contaminated again. Therefore, safety can be improved.
[0032]
In the above-described embodiment, only examples of the respective processes such as the cleaning process and the disinfection / sterilization are described, and the processing method, the processing order, and the like are not limited by the present embodiment.
[0033]
Further, the cleaning machine 1 of the present embodiment is applicable not only to reusable objects to be washed used in medical institutions and semiconductor factories such as nursing clothes, surgical gowns and work clothes, but also to work clothes and the like used in nuclear facilities. Can also be of interest if radiation contamination is at a very low level.
[0034]
【The invention's effect】
As described above, according to the present invention, the following excellent effects can be obtained.
That is, according to the first aspect of the present invention, a rotary drum having an inlet opening on one circular end face and an outlet opening on the other circular end face, and a center formed on the center of one circular end face of the rotary drum. A cylindrical support shaft having a fixed end and a base-side opening having a through hole communicating with the inlet opening, and a position openably and closably disposed at a position facing the opening on the distal end side of the support shaft. A loading opening / closing door is provided, and a takeout opening / closing door is provided so as to be openable and closable at a position facing the outlet opening of the rotating drum. The object to be cleaned is housed in a rotating drum, and the object to be cleaned after cleaning is opened and can be taken out from the outlet by opening the takeout opening / closing door, so that the cleaned object to be cleaned is surely contaminated again. Can be prevented. Therefore, a washing machine excellent in safety and reliability can be provided.
[0035]
According to the second aspect of the present invention, since the linear projection is formed along the spiral track on the inner peripheral surface of the cylindrical support shaft, the object to be cleaned is placed in the hollow portion of the cylindrical support shaft. Even so, the object to be cleaned can be automatically conveyed into the rotating drum by the rotation of the support shaft. Therefore, even if the length of the hollow portion is slightly increased, the cleaning object supplied can be reliably cleaned.
[0036]
According to the third aspect of the present invention, since the loading opening / closing door and the taking-out opening / closing door are arranged inside the partition so as to face the separate rooms separated by the partition, respectively, the contamination before treatment is contaminated. The object to be cleaned and the object to be cleaned after the cleaning treatment can be handled in a completely separated state.
[Brief description of the drawings]
FIG. 1 is a schematic front view of an embodiment of a cleaning machine according to the present invention.
FIG. 2 is a schematic side view of the purifier shown in FIG.
FIG. 3 is a schematic side sectional view of a portion indicated by AA in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Washer 2 Rotary drum 2a Through hole 2b Rear end surface 2c Inlet opening 2d Front end surface 2e Outlet opening 3 Bearing bracket 4 Housing 5 Outer body 6, 7 Opening 8 Spring 9 Mount 10 Shock absorber 11 Liquid supply pipe 11a Water supply pipe 11b Hot water supply pipes 12a, 12b Switching valve 13 Chemical liquid supply pipes 13a, 13b Branch supply pipes 14a, 14b Switching valve 15 Drainage pipe 16 Bellows pipe 17 Discharge valve 18 Outside air introduction pipe 19 Bellows pipe 20 Heating means 21 Exhaust pipe 22 Bellows pipe 23 Suction means 24 Motor 25 Heater 26 Steam introduction pipe 27 Motor 28 Oil seal 29 Bearing 30 Pulley 31, 32 Locking mechanism 34 V-belt 35 Opening door 36 Out door 37a, 37b Partition wall 38 Dirty room 39 Clean room 40 Operation panel 41 , 42 seal member 50 penetrating hollow portion 51 Cylindrical support shaft 52 linear protrusions 53 opening

Claims (3)

A rotating drum having a rotating shaft centered in a horizontal direction, a plurality of through holes on a peripheral surface, an inlet opening on one circular end surface, an outlet opening on the other circular end surface, and an object for accommodating an object to be washed. When,
A cylindrical support shaft having a base end fixed to the center of one circular end surface of the rotating drum and an opening at the base end side having a through hollow portion communicating with the inlet;
An outer shell that houses the rotating drum and can store a cleaning liquid at a lower portion,
Driving means for driving the rotary drum to rotate,
An opening / closing door that is openably and closably disposed at a position facing the opening on the tip side of the support shaft,
A take-out opening / closing door arranged to be openable and closable at a position facing the outlet of the rotating drum;
With
Opening the opening / closing door, storing the object to be cleaned in the rotary drum through the through hollow portion of the support shaft, and opening the opening / closing door for cleaning to allow the object to be cleaned to be taken out from the outlet. Washing machine characterized. The washing machine according to claim 1, wherein a linear projection is formed on the inner peripheral surface of the through hollow portion of the support shaft along a spiral track. The washing machine according to claim 1 or 2, wherein the opening / closing door and the take-out opening / closing door are arranged inside the partition so as to respectively face separate rooms separated by the partition.

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