JPH1099254A - Washing and sterilizing device for dishes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a device constituted so as to store a plurality of dish cages into which dishes served for a meal are put to perform washing and sterilizing by heating to be prevented from splashing washing water to a sterilizing means in washing and diffusing steam and an odor into the housing in sterilizing. SOLUTION: A recovery port shutter 51c is equipped on a washing water recovery port 51b of a washing water tank 51 placed under a housing 41 and a suction port shutter 55b on an air suction port 55a to suck air from the housing. The recovery port shutter 51b is opened and the suction port shutter 51c is closed in washing and former is closed and the latter is closed on sterilizing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning and disinfecting tableware in a facility using tableware such as school lunches.

[0002]

2. Description of the Related Art The present applicant stores a plurality of tableware baskets containing tableware used for use in a cart, and stores the carts in a housing of a washing apparatus to store the tableware, the tableware basket and the cart. Japanese Patent Application No. 8-110134 discloses a cleaning method and apparatus for performing the entire cleaning and disinfecting and drying by heating after the cleaning.
As a proposal. This is a conventional washing method, that is, storing used dishes and trays in a dish basket,
After transporting a container containing a plurality of tableware baskets to the washing room, the tableware basket is taken out of the container and subjected to a dipping and washing process, and the washed tableware is stored in a separately washed tableware basket and disinfected. It was made to solve the problem that the method of storing, disinfecting, storing, and then re-conveying in a container requires considerable manpower and equipment, and is costly. Things.

The above-mentioned proposed apparatus has both functions of cleaning and disinfecting. The apparatus has a cleaning tank at a lower portion of a housing for recovering and circulating the used cleaning water, and a hot air for disinfecting. Disinfecting means for supplying the water into the housing. Therefore, there is a possibility that the washing water scattered at the time of washing adheres to a heater or a blower of the disinfecting means, or steam or odor from the washing tank is dissipated into the housing at the time of disinfecting, which causes a failure of the disinfecting means, Or, it has caused a decrease in thermal efficiency and disinfection effect.

[0004]

The present invention pays attention to this point, and the washing water does not scatter to the disinfecting means at the time of washing, and steam or odor from the washing tank does not diffuse into the housing at the time of disinfecting. It has been made to obtain a cleaning and disinfecting apparatus.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, a dishwashing and disinfecting apparatus according to the present invention comprises a plurality of tableware baskets containing tableware used for use stored in a housing. A washing water recovery port of a washing tank arranged at a lower portion of a housing, in which washing water is sprayed to wash dishes and tableware baskets, and after washing, hot air is blown to disinfect by heating. In addition to providing a recovery port shutter, a suction port shutter is provided at the air suction port from inside the housing, open the recovery port shutter and close the suction port shutter during cleaning, and close the recovery port shutter and open the suction port shutter during disinfection. It is composed.

[0006] Further, the collection port shutter and the suction port shutter may be driven by a single motor to open and close both shutters alternately. For example,
Wires are connected between the take-up drum and the collection port shutter attached to the output shaft of the drive motor, and between the take-up drum and the suction port shutter with wires, and the collection port shutter and the suction port are rotated according to the rotation of the take-up drum. Open and close the shutter.

The washing and disinfecting apparatus of the present invention may have a structure in which a tableware basket containing tableware is placed on a cupboard provided in a housing. It is also possible to adopt a structure in which the stored trolleys are stored in the housing, and the dishes, tableware baskets and trolleys are entirely washed.

[0008]

Next, an embodiment of the present invention will be described. The following example is an example of a washing and disinfecting apparatus having a structure for washing tableware, tableware baskets and carts entirely, but the present invention does not wash the carts but a plurality of tableware baskets containing tableware. It is needless to say that the present invention can also be applied to an apparatus of a type in which is directly housed in a housing for cleaning.

FIGS. 1, 2, and 3 are side views, a front view, and an enlarged side view of a main part of a device embodying the present invention. FIGS. 4 to 6 show an example of a shutter driving mechanism. 1 to 3, reference numeral 1 denotes tableware, 2
Denotes a dish basket, 3 denotes a cart, and 4 denotes a washing device.

[0010] The tableware basket 2 has a structure similar to that of a commonly used tableware container, but tableware such as tableware and trays (hereinafter simply referred to as tableware 1) is stored in the tableware basket 2 as it is. Since washing is performed, the structure is such that wires are combined, and furthermore, the stored tableware 1 can be held in a state of being aligned at a predetermined interval from each other. The cart 3 is composed of, for example, an angle material or the like to form a frame body, and provided with a plurality of cupboards having a structure capable of holding the tableware baskets 2 accommodating the tableware 1 in a state of being arranged at predetermined intervals. In addition, a structure in which wheels such as casters are provided at a lower portion, and a structure generally called a cart is used.

The cleaning device 4 includes a housing 41 having a space capable of accommodating the carriage 3. In this example, an opening is formed in the front surface and a door (not shown) is provided in the opening. 51 is a washing water tank, 52 is a washing water pump, 5
3 is a cleaning manifold and 54 is a finishing manifold. From the cleaning manifold 53 and the finishing manifold 54, a plurality of branch pipes 53a and 54a are branched and arranged in parallel along the rear surface of the housing 41, respectively.
Further, a cleaning water nozzle pipe 53b and a finishing water nozzle pipe 54b branch off from these branch pipes 53a and 54a, respectively, and are arranged in parallel to the front surface of the housing 41.

The washing means is constituted by these components. The nozzle pipes 53b and 54b are arranged at the height and width of the cart 3 housed in the housing 41 and at the storage position of the tableware basket 2 housed in the cart 3. A plurality of nozzle holes 53c, 54c are formed in each pipe 53b, 54b as shown in FIG. The nozzle holes 53c and 54c are formed in an arrangement and shape such that the washing water and the finishing water to be sprayed can hit not only the tableware 1 stored in the tableware basket 2 but also the tableware basket 2 and the cart 3 evenly. ing.

Numerals 55 and 56 are a blower and a heater constituting a disinfecting / drying means. In the illustrated example, the ceiling and the wall surface of the housing 41 have a double structure, and the duct-like portion 41a is formed.
A blower 55 and a heater 56 are respectively provided here, and a hot air supply port 56 is provided below the duct-shaped portion 41a.
a is provided. As shown in FIG. 4, the blower 55 is attached to an outer plate 41b constituting the duct-shaped portion 41a so that the impeller 55A is disposed in the duct-shaped portion 41a, and the blower 55 is attached to the inner plate 41c. An air suction port 55a is formed immediately below and a suction port shutter 55b is provided here.

The arrangement of the blower 55 and the heater 56 is merely an example, and may be provided at another position, or hot air may be sent from outside the housing 41.
As the heater 56, in addition to an electric heater, a heat exchanger using steam as a heat source can be used.

The bottom plate 44 of the housing 41 is provided with a rail 44a for supporting the carriage 3 and a garbage filter 44b. A water collecting plate 51a of a tank 51 is provided below the garbage filter 44b. A washing water recovery port 51b of the tank 51 is provided, and a recovery port shutter 51c is provided here. Reference numeral 61 denotes a motor for driving the shutters 55b and 51c. The structure and operation of the driving mechanism will be described later.

In addition to the above, for example, an electromagnetic valve for adjusting the temperature of the washing water in the tank 51, a temperature sensor for detecting the temperature of the washing water and the finishing water, a position sensor for detecting the storage position of the carriage 1, various valves and the like Necessary devices such as switches, switches, indicator lights, and control devices are provided, but these are not shown.

The basic structure of the cleaning device 4 is as described above, and the cleaning of the tableware 1 is performed in the following procedure. First, tableware and trays used in a cafeteria, a school classroom, and the like are arranged and stored at predetermined positions of the tableware basket 2 at predetermined intervals. In this manner, the plurality of tableware baskets 2 containing the tableware 1 are stored in the trolley 3, and the trolley 3 is transferred to the cleaning room in which the cleaning device 4 is installed and stored in the housing 41 of the cleaning device 4. As a result, the washing water nozzle pipe 53b and the finishing water nozzle pipe 54b penetrate between the tableware baskets 2 stored in the carriage 3 in a plurality of stages in the longitudinal direction of the carriage 3.

When the cart 3 is of a cart type as described above, it can be stored in the housing 41 as it is, but the cart 3 may be of a container type having a box-shaped main body. The structure is such that the front surface can be opened, and is housed in the housing 41 with both surfaces opened.

Next, after setting the temperature of the washing water and the finishing water, setting the timer for determining the washing time of each step, and so on, the operation switch is turned on to start the operation. All subsequent operations are automatically performed. Done. At first, close the suction port shutter 55b and open the collection port shutter 51c,
This is a cleaning step performed by circulating the cleaning water, and the cleaning water pump 52 is operated. As a result, the washing water in the washing water tank 51 is sent to the washing water nozzle pipe 53b through the washing manifold 53, and the washing water is jetted from the nozzle holes 53c, whereby the tableware 1, the tableware basket 2, and the cart 3 are entirely washed. .
When the rough washing is completed, the pump 52 stops and the dirty washing water in the tank 51 is drained and washed. After that, the washing water for the main washing is supplied to the tank 51, and the pump 52 is operated again to perform the main washing. Is performed.

When the main washing is completed, the pump 52 is stopped and the finish washing is started. Here, finishing hot water is supplied to the finishing manifold 54 from the outside, and finishing water is sprayed from the nozzle holes 54c of the finishing water nozzle pipe 54b, so that the tableware 1, the tableware basket 2 and the cart 3 are finish-washed. During this finish washing, the tank 51 is in a drained state, and when the finish washing is completed and the tank 51 is washed, the washing process is completed. Subsequently, the suction port shutter 55b is opened, and the collection port shutter 51c is closed. The disinfection / drying process is started in the state of being in a state of being immersed.

In this step, the heater 56 is operated and the blower 55 is operated to supply and circulate the hot air into the housing 41 for disinfecting, sterilizing and drying the tableware 1, the tableware basket 2 and the cart 3. Hot air containing water vapor is sucked into the duct-shaped portion 41a from the air suction port 55a, a part of the hot air is discharged from a discharge port (not shown), and the rest is reheated and circulates in the housing 41 again.

After the disinfection / drying step is completed, the carriage 3 can be stored without being taken out of the cleaning device 4 until the next use. That is, by installing as many washing devices 4 as the number corresponding to the cart 3, the washing devices 4 can be used as a storage.
Can be stored hygienically without touching human hands. Further, since the dishware warmed by the high-temperature washing water is not cooled down, disinfection and drying are immediately performed by hot air, so that the heat efficiency is good and the processing can be completed in a short time.

In the above operation, all operations are automatically performed after the operation switch is turned on. However, the above description is only a basic operation. Accordingly, it is natural that a detailed control program including detailed operations such as various state detection, valve opening / closing, switch on / off, etc. for smoothly performing a predetermined operation is created, and the operation is performed according to this program. become.

Next, with respect to the examples shown in FIGS.
The structure and operation of opening and closing the suction port shutter 55b and the collection port shutter 51c by the driving motor 61 will be described.

The driving motor 61 is mounted on an outer plate 41b via a mounting plate 61a, and a large-diameter winding drum 62 and a small-diameter winding drum 63 are fixed to an output shaft thereof. In FIG. 5, the blower 55 and the outer plate 41b are not shown. The inlet shutter 55b is the inlet 5
It is a rectangular plate having a through-hole 55c corresponding to 5a, and is slidable on the lower plate 41c in the longitudinal direction, and between the connecting portion 55d at the right end and the winding drum 62. A wire 64a for closing operation is connected, and a wire 64b for opening operation is connected between the connecting portion 55e at the left end and the winding drum 62. In order to prevent residual foods and the like scattered from the tableware 1 from adhering to the blower 55 and the like, it is desirable to mount a mesh-like air-permeable filter 55f to the through hole 55c or the suction port 55a. .

The recovery port shutter 51c is rotatable around a fulcrum 51d on the upper edge so that the cleaning water recovery port 51b can rotate.
Connecting portion 51 supported on the upper edge and provided on the lower edge.
A wire 65 for opening and closing operation is connected between e and the winding drum 63. 66 and 67 are guide pulleys,
68 is an actuator fixed to the wire 64b, 69
Reference numerals a and 69b denote detection switches arranged corresponding to the actuator 68. The drawing shows that the through hole 55c is
Inlet shutter 55 at a position coinciding with 5a
b is open and the recovery port shutter 51c is closed, which is the state at the time of disinfection, and each shutter 51c and 55b is shown by a solid line.

In this state, when the drive motor 61 is driven and the winding drums 62 and 63 rotate counterclockwise as indicated by the dashed arrows in FIG. 4, the wires 64a and 65 are wound on the drums 62 and 63, respectively. The suction port shutter 55b is pulled by the wire 64a and moves rightward, and the connecting portion 51e of the collection port shutter 51c is pulled by the wire 65 and lifted. At the same time, the wire 64b also moves in the direction of the chain arrow, and when the wire 64b moves by a predetermined amount, the actuator 68 contacts the detection switch 69a to detect the predetermined amount of movement, a stop signal is output, and the drive motor 61 stops. In this manner, the shutter 55b is closed and the shutter 51c is opened, that is, the state at the time of cleaning is performed, by moving to a position where the through-hole 55c does not overlap with the suction port 55a as indicated by a chain line.

In this state, when the drive motor 61 is driven in the reverse direction to rotate the winding drums 62 and 63 clockwise as indicated by solid arrows, the through hole 55c is sucked by the reverse operation. The suction port shutter 55b is opened by moving to the left to the position of the solid line overlapping the port 55a, and the recovery port shutter 51c is rotated downward by its own weight to close the washing water recovery port 51b as shown by the solid line. That is, the state is the state at the time of disinfection.
When a predetermined amount of movement is detected by contact with the control signal, a stop signal is output and the drive motor 61 stops.

The operation signal of the forward or reverse rotation of the drive motor 61 as described above is given during the operation of the entire apparatus in accordance with the start and end of the cleaning step and the disinfection step. The diameters of 62 and 63 are selected according to the amount of movement required to open and close the shutters 55b and 51c. Therefore, depending on the process, the driving motor 6
By rotating 1 in either direction, both the suction port shutter 55b and the collection port shutter 51c can be alternately opened and closed in conjunction with each other. Steam or odor from the cleaning tank 51 does not adhere to or dissipate into the housing 41 during disinfection, which prevents the disinfecting means from malfunctioning and causing a reduction in thermal efficiency and disinfection effect. is there.

In the above example, the drive motor 61 is stopped by detecting the amount of movement of each of the shutters 55b and 51c from the amount of movement of the wire.
For example, the rotation angle of the winding drums 62 and 63 can be detected by other appropriate means such as reading. In addition, the structure of the shutters 55b and 51c in the above example is an example, and other appropriate shutter structures can be adopted.

[0031]

As is apparent from the above description, the apparatus for cleaning and disinfecting tableware according to the present invention accommodates a plurality of tableware baskets containing tableware used for cleaning and heating in a housing. In the one configured to perform the disinfection by the above, a recovery port shutter is provided at a cleaning water recovery port of a cleaning tank arranged at a lower part of the housing, and a suction port shutter is provided at an air suction port from inside the housing. The collection port shutter is opened and the suction port shutter is closed, and at the time of disinfection, the collection port shutter is closed and the suction port shutter is opened.

Therefore, the washing water scattered at the time of washing adheres to the heater or the blower of the disinfecting means and causes a failure of the disinfecting means, or steam or odor from the washing tank is dissipated into the housing at the time of disinfecting, and thermal efficiency and It is possible to provide a highly reliable and high-performance dishwasher with high reliability and no hygiene without causing a reduction in the disinfection effect.

Further, in the case where the recovery port shutter and the suction port shutter are driven by one motor,
The necessary members for driving the shutter can be stored in the limited space, and the space between the winding drum and the suction port shutter mounted on the output shaft of the drive motor and between the winding drum and the suction port shutter are respectively provided. By connecting with a wire and opening and closing each shutter according to the rotation of the winding drum, the interlocking mechanism of both shutters can be realized with a simple structure, and both shutters operate in conjunction. No electrical interlock means is required.

Further, in the case where the tableware, the tableware basket and the cart are entirely washed, the washing processing of the tableware and the tableware basket can be performed more hygienically.

[Brief description of the drawings]

FIG. 1 is a side view showing a basic configuration of an apparatus embodying the present invention.

FIG. 2 is a front view showing a basic configuration of an apparatus for practicing the present invention.

FIG. 3 is an enlarged side view of a main part of the device embodying the present invention.

FIG. 4 is a front view showing an example of a shutter driving mechanism in the apparatus.

FIG. 5 is a plan view of a main part of the drive mechanism.

FIG. 6 is a side view of a main part of a recovery port shutter portion of the drive mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tableware 2 Tableware basket 3 Cart 4 Cleaning device 41 Housing 51 Cleaning water tank 51b Cleaning water recovery port 51c Recovery port shutter 52 Cleaning water pump 55 Blower 55a Air suction port 55b Suction port shutter 56 Heater 61 Shutter drive motor 62, 63 Winding Taking drum 64a, 64b, 65 wire

Claims (4)

[Claims] 1. A plurality of tableware baskets containing tableware used for use are housed in a housing, washing water is sprayed to wash the tableware and the tableware basket, and after washing, hot air is blown to the tableware for heating. In a dishwashing and disinfecting apparatus configured to perform disinfection, a collection port shutter is provided at a cleaning water recovery port of a cleaning tank disposed at a lower portion of a housing, and a suction port shutter is provided at an air suction port from inside the housing. A washing and disinfecting apparatus for tableware, wherein the collecting opening shutter is opened and the suction opening shutter is closed during washing, and the collecting opening shutter is closed and the suction opening shutter is opened during disinfection. 2. The dishwashing and disinfecting apparatus according to claim 1, wherein the collection port shutter and the suction port shutter are driven by a single motor, and both shutters are opened and closed alternately. 3. The winding drum attached to the output shaft of the drive motor and the collection port shutter, and the winding drum and the suction port shutter are connected by wires, respectively, and are collected according to the rotation of the winding drum. 3. The apparatus for cleaning and disinfecting tableware according to claim 2, wherein the opening and closing operations of the mouth shutter and the suction port shutter are performed. 4. A plurality of tableware baskets containing tableware used for use are stored in a cart, and the cart is stored in a housing to wash the tableware, the tableware basket and the whole cart. The apparatus for cleaning and disinfecting tableware according to claim 1.