JP7225468B1 - wheel disinfector - Google Patents

Abstract

[Problem] Further improve automation of wheel disinfection work. [Solution] A wheel disinfection device 1 disinfects wheels 22, 23, and 24 of a serving vehicle 2 that operates between an external compartment where there is a possibility of contamination by pathogens and a sanitary compartment where contamination by pathogens should be suppressed. There is a cleaning liquid supply unit 45 that supplies cleaning liquid, a cleaning work unit 3 that is disposed in a predetermined disinfection area located on the service route of the serving vehicle 2 and spouts cleaning liquid, and a photoelectric sensor that detects the passing of the serving vehicle 2. The cleaning work unit 3 is controlled to spray cleaning liquid to the sensor 35 and the wheels 22, 23, and 24 of the serving vehicle 2 that is moving and rotating together with the serving vehicle 2 traveling in the disinfection area. It has a control panel 44. [Selection diagram] Figure 3

Description

TECHNICAL FIELD The present invention relates to a wheel disinfection device for disinfecting the wheels of meal carts and the like.

For example, when serving meals prepared in a hospital kitchen to each patient's room, it is often the case that a food delivery cart equipped with a plurality of running wheels on the bottom of the main body that can load a large number of food trays is used. . When entering from an external compartment such as a hospital room, which may inevitably be contaminated with bacteria or pathogens, into a sanitary compartment such as the kitchen where hygiene is strictly controlled, the wheels should be turned. It must be cleaned by washing with a cleaning solution such as a disinfectant.

The food cart travels back and forth between the sanitary compartment and the external compartment every meal time, and it is very troublesome to manually clean the wheels each time. There has been proposed a cleaning apparatus capable of automatically performing such wheel cleaning work (see, for example, Patent Document 1).

JP-A-2003-95074

However, in the cleaning apparatus of the prior art, it is necessary for the operator to temporarily stop the food delivery cart at a predetermined position on the cleaning apparatus before starting the cleaning work, and then perform manual operation according to a predetermined procedure. was there. As described above, in the cleaning work which is performed many times every day, it is troublesome to temporarily stop the catering cart each time and even the manual operation itself is complicated, and further automation has been demanded.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wheel disinfection device that further improves the automation of wheel disinfection work.

In order to achieve the above object, the present invention operates between a first area where there is a possibility of contamination with pathogens and a second area where contamination with said pathogens should be suppressed, and serves to the first area A wheel sterilization device for a meal carrier that sterilizes the wheels of a meal carrier that transports a meal containing foodstuffs, comprising a drug supply unit that supplies a stored drug, and the meal carrier A drug ejection unit that is arranged in a predetermined disinfection area located on the operation route and ejects the drug supplied from the drug supply unit, and in the disinfection area or along the traveling direction of the meal carrier A passage detection unit located upstream of the disinfection area and detecting passage of the meal carrier, and moving and rotating together with the meal carrier in a non-stop state within the disinfection area. and a control unit that controls the medicine ejecting part so as to eject the medicine to the wheels of the meal carrier.

According to the present invention, the automation of the wheel disinfection work can be further improved.

It is a schematic block diagram of the whole wheel disinfection apparatus which concerns on embodiment. It is a side view and a bottom view of the catering cart to apply. It is the top view which looked at the washing|cleaning work part from upper direction. FIG. 4 is a side cross-sectional view for explaining a wheel disinfection and cleaning operation performed by cooperative ejection of ejection nozzles in each row in a cleaning operation unit; FIG. 4 is a diagram showing a control time chart for performing disinfection and washing work on all wheels; FIG. 10 is a plan view of the cleaning unit when all wheels are cleaned at the same time; FIG. 10 is a plan view of the washing unit in which a sensor for detecting timing to start washing is provided for each wheel; FIG. 4 is a side cross-sectional view of the cleaning unit in which the arrangement positions of the jet nozzles are adjustable; FIG. 4 is a side cross-sectional view of a floor-embedded type cleaning unit and a floor-mounted type cleaning unit; FIG. 10 is a configuration diagram of an ejection control unit when switching the type of chemical to be ejected as a cleaning liquid; FIG. 10A is a side view and a bottom view of the food delivery cart configured to perform wheel cleaning work. FIG. 10 is a plan view of a waste liquid sink used when the food cart itself performs wheel cleaning work;

An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the embodiments described below are for explanation and do not limit the technical scope of the present invention. Therefore, those skilled in the art can employ embodiments in which each of the following components are replaced with equivalents, and these are also included in the technical scope of the present invention. In addition, in the following description, in order to facilitate understanding of the present invention, description of unimportant known technical matters will be omitted or simplified as appropriate.

<Schematic configuration of the wheel disinfection device of the present embodiment>
FIG. 1 is a diagram showing a schematic configuration of the entire wheel disinfection apparatus according to this embodiment. The wheel disinfection device 1 has a catering cart 2 , a cleaning work section 3 and an ejection control section 4 . The front, rear, up, down, left and right directions shown in FIG. to refer to.

In the example of this embodiment, the catering cart 2 serves to transport meals prepared in the hospital kitchen to each hospital room, and to collect post-meal tableware and transport it to the kitchen. It is a vehicle that does The catering cart 2 includes a vehicle body 21 capable of loading a large number of food trays (not shown) containing foodstuffs, and five traveling wheels 22, 23, and 24 on the bottom of the vehicle body 21. , in the example of the present embodiment, a human operator M pulls and moves it manually. In addition, the serving cart 2 is an example of a meal delivery vehicle, and the meal tray is an example of a meal tray.

The cleaning work part 3 is a part for performing disinfection and cleaning work by jetting a cleaning liquid from below to the wheels 22 , 23 , 24 of the catering cart 2 . The cleaning unit 3 in the example of the present embodiment is a floor-embedded type, and includes an external compartment such as a hospital room that may inevitably be contaminated with pathogens such as bacteria and pathogens, and an interior of the cooking room in this example. It is arranged in the disinfection area on the operation route of the food cart 2 that straddles the boundary with the sanitary section under strict sanitary control. When the worker M tows the food service cart 2 to enter the sanitary compartment from the external compartment, the worker M must pass the food service car 2 without stopping (non-stopped state) above the cleaning work unit 3. Let The structure of the catering cart 2 and the washing unit 3 will be described in detail later. The washing section 3 is an example of a medicine ejection section, the external section is an example of a first section, and the sanitary section is an example of a second section.

The ejection control unit 4 includes a cleaning liquid tank 41 , a compressor 42 , a mixing valve 43 and a control panel 44 . The cleaning liquid tank 41 stores a disinfecting liquid containing a drug component. Compressor 42 supplies compressed air, and mixing valve 43 mixes the compressed air with disinfectant supplied from cleaning liquid tank 41 to generate cleaning liquid for cleaning wheels 22 , 23 , 24 . The cleaning liquid tank 41 , the compressor 42 and the mixing valve 43 are collectively referred to as a cleaning liquid supply section 45 . In this example, a control panel 44, which is a computer, controls the pressure of the compressor 42 so that the cleaning liquid is always supplied to the cleaning section 3 at a constant pressure. Instead of the compressor 42 and the mixing valve 43 , a pump (not shown) may be provided to directly pressurize the chemical from the cleaning liquid tank 41 as the cleaning liquid and supply it to the cleaning working section 3 . In addition, the control panel 44 controls the ejection timing of the cleaning liquid for each of the plurality of ejection nozzles provided in the cleaning work section 3 based on the detection timing from the later-described photoelectric sensor provided in the cleaning work section 3 . The cleaning liquid supply unit 45 is an example of a chemical supply unit, and the control panel 44 is an example of a control unit.

As described above, in the wheel disinfection apparatus 1 of the present embodiment, when the worker M pulls the food delivery cart 2 and enters the sanitary compartment from the external section, the food delivery cart 2 is not stopped and the above cleaning work part 3 is moved. The wheels 22, 23, and 24 of the catering cart 2 can be disinfected and washed by automatically jetting the washing liquid from below just by moving it through.

<Detailed configuration of each part>
FIG. 2( a ) is a side view of the food delivery cart 2 applied to this embodiment, and FIG. 2( b ) is a bottom view of the food delivery cart 2 . In FIG. 2, the catering cart 2 has a substantially rectangular parallelepiped body 21 as a whole, a towing handle 25 provided on the front surface of the body 21, a detection LED 26, and a It has five running wheels 22 , 23 , 24 .

The vehicle body 21 is provided with four opening/closing doors 27 on the sides thereof, and by opening these opening/closing doors 27, an internal shelf (not shown) on which many food trays can be loaded can be accessed. The traction handle 25 is configured to hold a round bar-shaped handle in a horizontal state in the illustrated example. The detection LED 26 is a line-shaped LED provided on the bottom surface of the front end of the vehicle body 21, and is supplied with power from an on-board battery (not shown) to control reference timing for a photoelectric sensor of the washing unit 3, which will be described later. Light irradiation for detection is performed.

The five running wheels 22, 23, 24 are all arranged on the bottom surface of the vehicle body 21, and one of them serves as the guide wheel 22, which is located at the center position in the left-right direction and is spaced rearward from the detection LED 26 by a distance L1. It is placed in the position where The two front wheels 23 are arranged on the left and right sides of the vehicle body 21, respectively, at positions spaced rearward from the guide wheels 22 by a distance L2. Two wheels as the rear wheels 24 are arranged at respective positions on the left side and the right side of the vehicle body 21 at positions spaced rearward from the front wheels 23 by a distance L3. The guide wheel 22 is an example of a first wheel, and the rear wheel 24 is an example of a second wheel.

In this example, the diameters of the five running wheels 22, 23, and 24 are all set to the same dimension φD, and the two front wheels 23 and the two rear wheels 24 are separated by the same vehicle width W in the left-right direction. there is Further, the frontmost guide wheel 22 and the two rear wheels 24 among the five running wheels 22, 23, and 24 are all mounted rotatably about a vertical axis with respect to the bottom surface of the vehicle body 21. The two front wheels 23 are rotatably supported on a common rotary shaft held horizontally in the left-right direction. With such a configuration, the worker M can easily turn the whole food delivery cart 2 even while it is towing while holding the towing handle 25 .

FIG. 3 is a plan view of the cleaning unit 3 as seen from above. On the upper surface of the washing unit 3, a grating 31 in the form of a wire mesh is provided so as to be flush with the floor surface F (see FIG. 1). The grating 31 is omitted in FIG. In FIG. 3, the cleaning unit 3 of the example of the present embodiment is of the floor-embedded type as described above. is provided with nine ejection nozzles 32, 33, and 34, six electromagnetic valves C1-C3, S1-S3, and one photoelectric sensor 35, all of which face upward.

Of the nine ejection nozzles 32, 33, and 34, three center row ejection nozzles 33f, 33m, and 33b are aligned in the front-rear direction (traveling direction of the food cart) at the center position in the left-right direction. Also, three left-line ejection nozzles 32f, 32m, 32b and three right-line ejection nozzles 34f, 34m, 34b are aligned in the front-rear direction at left and right positions in the left-right direction, respectively. Center row jet nozzles 33f, 33m, 33b, left row jet nozzles 32f, 32m, 32b, and right row jet nozzles 34f, 34m, 34b are connected to guide wheels 22, left wheels 23, 24, and right wheels 23 of the catering cart 2, respectively. , 24 to eject cleaning liquid for disinfection and cleaning. Therefore, the left row ejection nozzles 32f, 32m, 32b and the right row ejection nozzles 34f, 34m, 34b are arranged so as to be separated by a distance of the vehicle width W in the left-right direction, and the center row ejection nozzles 33f, 33m, 33b It is placed in the center in the horizontal direction between the Two nozzles 32f, 33f, 34f, and 32b at both ends in the front-rear direction of the center row ejection nozzles 33f, 33m, and 33b, the left row ejection nozzles 32f, 32m, and 32b, and the right row ejection nozzles 34f, 34m, and 34b. , 33b and 34b are spaced apart at the same distance as the outer circumference (=diameter φD×π) of each wheel 22, 23 and 24 of the catering cart 2, and three jet nozzles are arranged in line at equal intervals in each row. there is The ejection nozzles 32, 33, and 34 of each row are arranged in the same region (same position) in the front-rear direction.

The nine jet nozzles 32, 33, and 34 communicate with the main pipe 36, which communicates with the mixing valve 43 of the jet controller 4 and can supply the cleaning liquid, by a control signal from the control panel 44. They are connected via six electromagnetic valves C1 to C3 and S1 to S3 that can be switched between cutoff and shutoff. The three ejection nozzles 33f, 33m, and 33b in the center row are individually connected directly to the main pipe 36 via electromagnetic valves C1, C2, and C3, so that the supply and cutoff of the cleaning liquid can be switched and controlled independently. . The ejection nozzles 32 and 34 in the left and right rows communicate with each other through a pair of ejection bubbles located at the same position in the front-rear direction in each row. By being connected to the main pipe 36 via S1, S2, and S3, it is possible to switch and control the supply and cutoff of the cleaning liquid independently for each pair.

The photoelectric sensor 35 is a sensor that outputs to the control panel 44 a detection result as to whether or not the light projected from the detection LED 26 of the food delivery cart 2 has been received. is arranged at a position spaced apart by a distance L1 to the side. In addition, it is preferable to provide a guide member or a mark so that when the worker M pulls the food delivery cart 2 and moves through the cleaning work part 3, the alignment in the left-right direction is facilitated. For example, as shown in the figure, the center line CL extending in the front-back direction coincides with the center positions of the ejection nozzles 33 and the photoelectric sensors 35 in the center row in the left-right direction. ) should be drawn on the floor F. Note that the photoelectric sensor 35 is an example of a passage detection unit.

Since the cleaning unit 3 is configured as described above, when the wheels 22, 23, and 24 of the catering cart 2 pass above the cleaning unit 3, the wheels 22, 23, and 24 It is possible to clean by spraying the cleaning liquid over the entire outer periphery of the. For example, as shown in FIG. 4 showing a side cross-section of the cleaning work unit 3, the food service car 2 tours the external compartment, and the cleaning work is performed while the guide wheels 22 are in a contaminated state (see the shaded portion in the figure). When it passes over the portion 3, the three ejection nozzles 33 in the central row cooperate with each other at appropriate timings to wash the guide wheels 22. As shown in FIG. In the example of the present embodiment, it is assumed that the human worker M moves the food cart 2 while it is moving through the cleaning work section 3 while maintaining a substantially constant progressing speed V by manually pulling the food cart 2 . .

First, when the catering cart 2 starts to enter the cleaning work section 3 and the photoelectric sensor 35 detects the projection light of the detection LED 26, the guide wheel 22 moves toward the rearmost ejection nozzle 33b in the central row. It is located directly above. At the detection timing of the photoelectric sensor 35, the control panel 44 immediately opens the electromagnetic valve C3 corresponding to the rear ejection nozzle 33b and starts ejecting the cleaning liquid therefrom. The lower area of our house can be disinfected and washed.

As the catering cart 2 continues to move, the control panel 44 controls the corresponding ejection nozzles 33m at the respective timings when the guide wheels 22 sequentially approach the ejection nozzles 33m and 33f from the rear side of the center row toward the center to the front side. , 33f can be initiated to disinfect other circumferential areas of the guide wheel 22. FIG. Here, the three ejection nozzles 33f, 33m, and 33b in the central row are evenly arranged within the range of the same distance (=Dπ) as the outer circumference of the guide wheel 22. Only by passing the guide wheel 22 over the cleaning work section 3, the entire outer peripheral range of the guide wheel 22 can be disinfected and cleaned.

In addition, the control panel 44 controls the other electromagnetic valves S1, S2, and S3 to open at an appropriate timing based on the detection timing X of the photoelectric sensor 35 as shown in the control time chart of FIG. The cleaning operation similar to that for the guide wheels 22 can be performed on the left and right front wheels 23 and the rear wheels 24, respectively. Specifically, the time required for one wheel moving at the traveling speed V to pass through the arrangement region length φDπ of the three ejection nozzles is Dπ/V, and the three ejection nozzles are linked in order during this time. By performing one set of opening control of the electromagnetic valves C1 to C3 and S1 to S3 for jetting, cleaning work for the one wheel can be performed.

For this reason, a set of coordinated opening control of the three electromagnetic valves S1, S2, and S3 for simultaneously ejecting corresponding pairs of ejection nozzles 32 and 34 in the left and right columns is set from the detection timing X of the photoelectric sensor 35 to the delay time L2. /V, and at timing Z after a delay time L3/V from the same detection timing X. The delay timer function in the timing control of each of the electromagnetic valves C1 to C3 and S1 to S3 is realized entirely by the computer of the control panel 44 in the example of this embodiment. Also, the above three timings X, Y, and Z are examples of ejection start timings.

In addition, from the above, the length Ls in the front-rear direction of the entire cleaning work unit 3 is the length of the arrangement area of the three ejection nozzles in one row (=the same distance as the outer circumference of the wheel=Dπ) plus a little margin. It suffices if the distance is set to a degree, and it can be made shorter than the length (L2+L3) from the guide wheel 22 to the rear wheel 24 of the catering cart 2.

<Effects of Embodiment>
As described above, in the present embodiment, the wheel disinfection device 1 disinfects the wheels 22, 23, and 24 of the catering cart 2 operated between the external section and the sanitary section. , a cleaning unit 3 , a photoelectric sensor 35 provided in the cleaning unit 3 , and a control panel 44 . The control panel 44 controls the cleaning unit 3 so that the cleaning liquid is sprayed onto the wheels 22, 23, 24 that move and rotate together with the food cart 2 in the disinfection area.

As a result, the worker M can cause the wheel sterilizer 1 to automatically perform the sterilization and cleaning work for the wheels 22, 23, and 24 only by advancing the catering cart 2 along an appropriate course on the cleaning work section 3. . In other words, it is possible to further improve the automation of the cleaning and disinfection of the wheels 22, 23 and 24 by eliminating the need for the work of temporarily stopping the catering cart 2 at a predetermined position and the operation of a predetermined procedure for spraying and stopping the cleaning liquid.

Moreover, in this embodiment, the control panel 44 uses its delay timer function to set the timing at which a predetermined delay time has elapsed after the photoelectric sensor 35 detects the passage of the catering cart 2 as the jetting start timing of the cleaning liquid. It controls the cleaning work section 3 . As a result, at appropriate timings when the wheels 22, 23, and 24 pass above the corresponding jet nozzles 32, 33, and 34, the cleaning liquid is sprayed in an amount necessary for disinfecting and cleaning the wheels 22, 23, and 24. Since the cleaning liquid can be jetted out, consumption of the cleaning liquid can be appropriately suppressed.

The delay timer function in the timing control of the electromagnetic valves C1-C3 and S1-S3 may be realized by combining a dedicated electronic circuit or fluid circuit (not shown) in addition to the computer of the control panel 44. Further, the means for detecting the passage of the food delivery cart 2 is limited to the combination of the detection LED 26 as the light source on the food delivery cart 2 side and the photoelectric sensor 35 as the light detection side on the cleaning work section 3 side as described above. can't For example, although not shown in particular, a light reflection detection type having both a light source and light detection on the cleaning operation unit 3 side, a sound wave detection type such as an echo, or RFID or NFC is used. Various means such as a radio wave detection type may be used. Moreover, the installation position of such a detection sensor is not limited to the inside of the disinfection area of the cleaning unit 3, and may be installed at a position on the rear side of the disinfection area. In that case, the start timing of the cleaning control set for the guide wheels 22 may also be controlled with a delay time corresponding to the installation position of the detection sensor.

In addition, particularly in this embodiment, the length dimension along the front-rear direction of the entire cleaning work unit 3 is the distance between the guide wheel 22 on the frontmost side in the traveling direction of the catering cart 2 and the rear wheel 24 on the rearmost side in the traveling direction. is set smaller than the distance (L2+L3) of . As a result, compared to the case where all the wheels 22, 23, and 24 are washed at the same time while the catering cart 2 is temporarily stopped (see FIG. 6, which will be described later), the installation length of the cleaning unit 3 in the direction of movement in the disinfection area is reduced. Shortened space saving is possible.

<Modification>
It should be noted that the present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the gist and technical idea of the present invention. Such modifications will be described in order. The same reference numerals are given to parts equivalent to those of the above-described embodiment, and description thereof will be omitted or simplified as appropriate.

<When washing all wheels at the same time>
In the above-described embodiment, the guide wheels 22, the front wheels 23, and the rear wheels 24 of the catering cart 2 are washed at different timings, but the present invention is not limited to this. In addition, as shown in FIG. 6, in the cleaning work unit 3, all the guide wheels 22, the front wheels 23, and the rear wheels 24, which are based on the positions of the detection LEDs 26 (photoelectric sensors 35), are connected to the respective wheels. It is also possible to adopt a configuration in which the jet nozzle rows 32, 33, and 34 are provided at positions of . As a result, the washing operation of all the wheels 22, 23, 24 can be started all at once at the detection timing X of the photoelectric sensor 35. Therefore, a delay timer for performing ejection timing control for each wheel 22, 23, 24 in the control panel 44 is provided. This eliminates the need for functions and simplifies the control configuration.

<When providing a sensor for detecting the cleaning start timing for each wheel>
In the above embodiment, the start timings Y and Z of the cleaning control sets for the front wheels 23 and the rear wheels 24 are delayed based on only the detection timing X by the single photoelectric sensor 35, but the present invention is not limited to this. In addition, as shown in FIG. 7, by providing the second and third photoelectric sensors 35A and 35B spaced forward by a distance L2 and a distance L3, the cleaning control of the front wheel 23 and the rear wheel 24 can be performed without changing the respective detection timings. The set start timings Y and Z can be synchronized. This eliminates the need for a delay timer function for controlling the ejection timing of each wheel 22, 23, 24 in the control panel 44, and enables accurate synchronization even if the towing speed of the worker M is uneven. becomes.

<When the arrangement position of each ejection nozzle is adjustable>
In the above-described embodiment, the arrangement positions of the jet nozzles 32, 33, and 34 in the cleaning work section 3 are fixed, but the present invention is not limited to this. Alternatively, as shown in FIG. 8, the jet nozzles 33f, 33m, and 33b in the same row may be provided on the same bracket 6 so as to be slidably changeable so that their positions can be adjusted in the front-rear direction. Also, although not shown, the front wheels 23 and the rear wheels 24 may be provided so that their positions can be adjusted in the left-right direction. As a result, it is possible to appropriately adjust the ejection position of the cleaning liquid according to the specifications of the wheel intervals L2 and L3 in the front-rear direction and the wheel interval W in the left-right direction of the catering cart 2 .

<When the cleaning unit is installed on the floor>
In the above-described embodiment, as shown in FIG. 9A, the cleaning unit 3 is of the floor-embedded type, but is not limited to this. Alternatively, as shown in FIG. 9(b), the entire cleaning section 3A may be formed in a substantially rectangular parallelepiped box body and installed on the floor surface F. As shown in FIG. In this case, it is preferable to provide a slope portion 7 having an appropriate inclination angle in front and rear of the cleaning work section 3 so that the catering cart 2 can easily pass over the cleaning work section 3 . As a result, the movement and installation of the cleaning unit 3 are simplified, and addition, reduction, layout change, and layout adjustment can be easily performed.

<In the case of varying the jetting amount, jetting time, and chemical type of the cleaning liquid>
In the above embodiment, the ejection amount, ejection time, and chemical type of the cleaning liquid are fixed, but the present invention is not limited to this. In addition, as in the ejection control unit 4A shown in FIG. 10, two cleaning liquid tanks 41A and 41B with different types of stored chemicals are provided, and a switching valve 46 is controlled by the control panel 44 to select which chemical to mix. 43 may be switchable. A dilution valve (not shown) may be provided instead of the switching valve 46, and one of the chemicals may be water or alcohol mixed with the other chemical by the dilution valve to adjust the dilution concentration. In addition, by controlling the pressurizing force of the compressor 42, the spray amount of the cleaning liquid is variably controlled, and by controlling the opening times of the electromagnetic valves C1 to C3 and S1 to S3, the individual spray nozzles 32, 33, and 34 are controlled. may be variably controlled. As a result, it becomes possible to adjust the contents of the cleaning work according to the situation of the catering cart 2 at that time, the environmental conditions, and the like.

Specifically, for example, on a day when a menu with many raw items is served at lunchtime when the temperature is high, if it happens to be served after a long time, there is a high possibility that it is spoiled, and a more appropriate chemical is used. and may require more thorough cleaning. On the other hand, if there are no such particularly serious factors, we would like to finish cleaning as simply as possible. Thus, it is useful to variably control the ejection amount, ejection time, and chemical type of the cleaning liquid according to various conditions.

In response to this, although not shown, predetermined information is recorded on a recording medium, such as by providing a wireless tag IC in the catering cart 2, or by printing or displaying an image code such as a QR code (registered trademark). , the information is read by a reader via corresponding wireless communication or optical means in the vicinity of the cleaning station. Then, the control panel 44 can variably control the jetting amount of the cleaning liquid, the jetting time, and the type of chemical based on the contents of the read information. As a result, it becomes possible to carry out the cleaning work with appropriate contents according to the situation of the catering cart 2 at that time and the environmental conditions such as the time of day.

<Reference example in which the catering truck itself cleans the wheels>
As a reference example, as shown in FIG. 11, it is conceivable to provide a jet control unit 4 and a cleaning unit 3 in the catering cart 2A itself to clean the wheels 22, 23 and 24 of the catering cart 2A. In this case, jet nozzles 32, 33, and 34 are provided at appropriate positions that can jet the cleaning liquid toward each wheel 22, 23, and 24, and through appropriately connected pipes and electromagnetic valves (not shown), A control panel 44 performs ejection control.

In this case, as shown in FIG. 12, a waste liquid sink field 8 for receiving and recovering the waste liquid after washing the wheels 22, 23 and 24 by jetting from the jet nozzles 32, 33 and 34 is provided in the external compartment. It is preferable to provide the floor surface F together with a grating (not shown) as a disinfection area between the sanitary compartment and the sanitary compartment. When the length of the waste liquid flow field 8 in the longitudinal direction is set to about Dπ as shown in the figure, the jetting timings of the jetting nozzles 32, 33, and 34 are synchronized so that the waste liquid does not flow out to the outside. There is a need. In that case, a detection LED 26 is provided at an appropriate position on the side of the waste liquid flow field 8, a photoelectric sensor 35 is provided on the side of the food service car 2, and the waste liquid flow field 8 of the food service car 2 is connected to the control panel 44 of the food service car 2. It is also possible to detect the timing of arrival at As a result, the catering cart 2 itself can be provided with most of the components necessary for washing the vehicle, and the burden on the external environmental equipment can be greatly reduced.

The vehicle to be cleaned and disinfected by the wheel disinfection device 1 or the vehicle itself whose wheels are cleaned and disinfected as described above is not limited to the catering cart 2 for serving and delivering meals. Another application may be to any type of vehicle where the wheels 22, 23, 24 need to be cleaned and disinfected to enter the sanitary compartment from the exterior compartment.

It should be noted that, in the above description, descriptions such as "the same", "equal", and "different" regarding external dimensions and sizes are not strictly defined. That is, the terms "same", "equal", and "different" mean "substantially the same", "substantially equal", and "substantially different", with allowance for design and manufacturing tolerances and errors. .

In addition to the methods already described above, the methods according to the above-described embodiments and modifications may be appropriately combined and used.

In addition, although not exemplified one by one, the present invention can be implemented with various modifications within the scope of the invention.

1 Wheel sterilizer 2, 2A Meal cart (meal cart)
3, 3A Cleaning work part (drug ejection part)
4 ejection control unit 21 vehicle body 22 induction wheel (wheel)
23 front wheel (wheel)
24 Rear wheel (wheel)
26 detection LED
31 grating 32, 33, 34 ejection nozzle 35 photoelectric sensor (passage detector)
41, 41A cleaning liquid tank, 41B
42 Compressor 43 Mixing valve 44 Control panel (control unit)
45 cleaning liquid supply unit (chemical supply unit)
C1~C3, Solenoid valve S1~S3
F Floor surface M Worker

Claims (6)

A meal carrier that operates between a first area where contamination with pathogens is possible and a second area where contamination with pathogens should be suppressed, and transports meals containing ingredients to be served to the first area. A wheel of a meal carrier, which is a car and has a substantially rectangular parallelepiped body body and a towing handle for a worker provided on the front surface of the body body. A disinfection device,
a drug supply unit that supplies the stored drug;
a drug ejection unit arranged in a predetermined disinfection area located on the operation route of the meal delivery vehicle and ejecting the drug supplied from the drug supply unit;
A passage detection unit located in the disinfection area or upstream of the disinfection area along the running direction of the meal delivery vehicle and detecting passage of the meal delivery vehicle;
controlling the chemical injection unit to eject the chemical against the wheels of the meal carriage that moves and rotates with the meal carriage that is in a non-stop state in the disinfection area; a control unit;
has
The control unit comprises a delay timer,
The medicine ejecting part is controlled so that the ejection start time of the medicine is set to the timing when the predetermined delay time by the delay timer has passed after the passage of the meal carriage is detected by the passage detection part,
A guide member or a mark is provided for alignment in the left-right direction when the operator pulls the meal carriage using the towing handle and moves over the medicine ejection part.
A wheel disinfection device for a meal carrier, characterized by: In the wheel disinfection device of the meal carrier according to claim 1 ,
The meal carrier vehicle is
A plurality of wheels including a first wheel on the frontmost side in the traveling direction and a second wheel on the rearmost side in the traveling direction,
The wheel sterilization device for a meal carrier, wherein the length of the sterilization area along the running direction is smaller than the distance between the first wheel and the second wheel. In the wheel disinfection device of the meal carrier according to claim 2 ,
The drug ejection part is
A plurality of ejection nozzles arranged side by side along the running direction in the disinfection area,
The plurality of ejection nozzles are
A wheel disinfection device for a meal carrier, characterized in that the installation position in the disinfection area can be slidably changed along the traveling direction or a direction orthogonal to the traveling direction. In the wheel disinfection device of the meal carrier according to claim 3 ,
The control unit
A wheel disinfection device for a meal carrier, characterized by variably controlling at least one of an ejection amount from each of the plurality of nozzles, an ejection time, and a type of the medicine. In the wheel disinfection device of the meal carrier according to claim 4 ,
A plurality of the meal table carriers are provided,
Each of the plurality of meal delivery vehicles is equipped with a recording medium that records corresponding predetermined information,
The wheel disinfection device of the meal carrier further comprises:
a reading device that reads the predetermined information from the recording medium via wireless communication when the meal delivery vehicle approaches within a predetermined distance range;
The control unit
A wheel sterilizing device for a meal carrier, characterized in that at least one of the ejection amount, the ejection time, and the type of the medicine is variably controlled according to the predetermined information read by the reader. In the wheel disinfection device for a meal carrier according to claim 5 ,
The control unit further
variably controlling at least one of the ejection amount, the ejection time, and the type of the chemical according to at least one of the contents of the ingredients and the time zone in which the meal delivery vehicle is operated; A wheel disinfection device for a meal carrier, characterized by:

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