JP7325091B2 - dish washing equipment - Google Patents

Description

The present invention relates to a dishwashing device.

2. Description of the Related Art In recent years, in restaurants, a dish washing apparatus for automatically washing dishes has been used. In restaurants such as conveyor belt sushi restaurants, where plates carrying food and drink are transported by conveyor, a large number of plates of the same shape are used, so a continuous washing device is needed to efficiently wash these plates. It is used (see, for example, Patent Literature 1).

JP-A-2004-8319

2. Description of the Related Art In a dishwashing device for automatically washing stacked dishplates, an operation is performed in which the dishplates piled up in a dish loading port are successively dropped into the device. Then, the dish plates dropped into the apparatus from the plate inlet are slid one by one in the lateral direction and washed by the rotating brush and washing water. Therefore, the inside of the dishwashing apparatus is covered with deposits scattered from the dishware by the force of the rotating brush. For this reason, dishwashing machines require regular cleaning operations.

However, in order to remove the deposits scattered in various directions by the force of the rotating brush with the automatic washing mechanism provided in the device, it is necessary to spray washing water all over the interior of the dish washing device. For this reason, the amount of washing water consumed by the dishwashing apparatus is increased, which is not economical, and practical application of an automatic washing mechanism for washing the inside of the apparatus has been practically difficult.

Accordingly, the present application discloses a dishwashing device that minimizes the amount of water consumed by a washing mechanism that cleans the inside of the dishwashing device.

In order to solve the above-mentioned problems, in the present invention, a rotating brush for brushing the surface of the dish plate that has entered through the plate receiving opening is brushed toward the side of the receiving opening, and the portion where the rotating brush is disposed is directed toward the dish receiving opening. I decided to spray cleaning water on the side part with an internal cleaning nozzle.

More specifically, the present invention relates to a dishwashing apparatus comprising a dish receiving opening into which dishes to be washed are received, a dish washing chamber through which the dishes received from the dish receiving opening pass, and a dishwashing chamber through which the dishes are washed. A plate outlet for discharging the dishes, a rotary brush installed in the dish washing room for brushing the surface of the dishes entering from the plate receiving opening toward the dish receiving opening, and the inside of the dish washing room, and an internal washing nozzle for spraying washing water from the part where the brush is arranged to the part on the dish receiving opening side.

In the above-described dishwashing apparatus, the dishes that have entered from the dish inlet are washed by the rotating brush in the dishwashing chamber. Therefore, the inside of the dish-washing chamber is covered with deposits scattered from the dishes by the force of the rotating brush. In the above dishwashing apparatus, the rotating brush rotates so as to brush the surface of the dishplate toward the dish inlet side, so most of the deposits on the dishplate scattered by the force of the rotating brush are It will scatter from the rotating brush toward the dish inlet. In addition, since unwashed dishes are put into the dish inlet, the vicinity of the dish inlet is basically in an environment where deposits from the dishes tend to adhere. Therefore, in the above-described dish washing apparatus, by rotating the rotary brush in the above-described direction, the deposits on the dish plate that are scattered by brushing are basically removed from the dish insertion opening to which the deposits of the dish plate are likely to adhere. scatter in the direction of Thus, instead of spraying washing water all over the interior of the dish washing chamber, it is possible to maintain the cleanliness of the entire dish washing chamber by spraying washing water only on the portion on the side of the dish inlet from the brush. Therefore, compared with the case of spraying washing water over the entire dish washing chamber, the amount of washing water is smaller, which is economical. It should be noted that the cleaning water blown out from the internal cleaning nozzle may be water that can purify the inside of the device, and may or may not be water mixed with detergent.

By the way, the internal washing nozzle may spray washing water before starting the washing operation of the dishes. If the washing water is sprayed before the start of the washing operation of the dish plate, the part on the plate slot side from the brush becomes wet before brushing. Cleanliness in the dish washing room is increased.

Further, the internal washing nozzle may spray washing water after the washing operation of the dishes is completed. If the washing water is sprayed after the washing operation of the dishes is finished, washing with water is performed before the deposits scattered by the brushing are solidified by hardening, so the cleanliness in the dish washing chamber is improved.

Also, in the dish washing room, the dish plates that enter from the dish receiving port are slid one by one, and the rotating brush has bristles that stand up from the outer peripheral surface of the rotating shaft whose central axis intersects the sliding direction of the dish plates. You can brush the dishes. With such rotating brush brushing, deposits on the dish plate are likely to scatter toward the plate insertion opening.

With the dishwashing apparatus according to the present invention, it is possible to minimize the amount of water consumed by the washing mechanism that cleans the inside of the dishwashing apparatus.

FIG. 1 is an example of a perspective view showing the appearance of the dish washing apparatus according to the embodiment. FIG. 2 is an example of a perspective view showing how dishes are washed inside the dish washing apparatus. FIG. 3 is an example of a diagram showing a washing path along which a dish plate slides. FIG. 4 is a system configuration diagram of the dishwashing apparatus. FIG. 5 is a diagram showing an example of the mounting position of the internal cleaning nozzle. FIG. 6 is a diagram showing an example of a site cleaned by an internal cleaning nozzle group.

Embodiments of the present invention will be described below. The embodiments shown below are aspects of the present invention, and do not limit the technical scope of the present invention. Each of the embodiments and modifications described below is suitable for, for example, restaurants serving various food and drink such as sushi, beverages, rice bowls such as soba and udon, fried chicken and tempura.

FIG. 1 is an example of a perspective view showing the appearance of the dish washing apparatus according to the embodiment. As shown in FIG. 1, the dishwashing apparatus 1 has a dish inlet 3 and a dish outlet 4 on the upper surface of a substantially rectangular parallelepiped housing 2 . Further, on the top surface of the housing 2, an operation panel C is provided for receiving an operation to start washing the dish D and washing the interior of the dish washing apparatus 1. As shown in FIG. Unwashed dish plates D used for eating and drinking are stacked in the plate slot 3. Washed dish plates D washed by the dish washing device 1 are stacked on the plate discharge port 4. - 特許庁Around the plate inlet 3 and the plate outlet 4, a plurality of guide bars 5 are erected so as to surround the plate inlet 3 and the plate outlet 4 for preventing the stacked dish plates D from falling. As shown by the arrow in FIG. 1, the dishwashing apparatus 1 takes in the dishes D stacked in the dish insertion port 3 one by one, wash them, and stacks them in the dish discharge port 4. - 特許庁

FIG. 2 is an example of a perspective view showing how the dish D is washed inside the dish washing apparatus 1. As shown in FIG. The dishes D entered into the housing 2 from the dish inlet 3 are slid one by one in the horizontal direction by a pair of conveying screws S1 and S2 arranged in parallel from the dish inlet 3 toward the plate outlet 4. , reaches the plate outlet 4 . Spiral grooves M1 and M2 are formed in mutually different directions in the pair of conveying screws S1 and S2. The dish D is raised and lowered by devices (not shown) provided between the dish inlet 3 and the dish outlet 4 and the conveying screws S1 and S2. Edges of the dish plate D are fitted in the grooves M1 and M2 of the conveying screws S1 and S2. The dish D is supported by rails (not shown) provided inside the pair of conveying screws S1 and S2. Therefore, when the pair of conveying screws S1 and S2 rotate in opposite directions with the edges fitted in the grooves M1 and M2, the dish plate D slides laterally along the rails. In FIG. 2, since the dish inlet 3 is arranged on the left side of the device and the dish outlet 4 is arranged on the right side of the device, the dish D moves from the left side to the right side in the dish washing apparatus 1. form. However, in the dish washing machine 1, the dish inlet 3 is arranged on the right side of the machine and the dish outlet 4 is arranged on the left side of the machine so that the dish D moves from the right side to the left side in the dish washing machine 1. It may be in a form that moves.

FIG. 3 is an example of a diagram showing a washing path 10 along which the dish D slides. In the dishwashing device 1, a first stage washing nozzle 6, rotating brushes 7U and 7L, a second stage washing nozzle 8 and a drying nozzle 9 are arranged in this order along a washing path 10 along which the dishware D slides. is provided. A washing nozzle 6 in the first stage sprays water mixed with a washing chemical solution onto the dish D. The rotating brush 7U brushes the surface of the dish D and removes solid matter adhering to the dish D, and is rotated by the power of a motor (not shown). The rotating brush 7U is a substantially columnar rotating brush having brush bristles rising from the outer peripheral surface of a rotating shaft whose center axis crosses the sliding direction of the dish D in the horizontal direction. The rotating brush 7L is for brushing the back surface of the dish plate D to remove solid matter adhering to the dish plate D, and is rotated by the power of a motor (not shown). The rotating brush 7L has a substrate whose central axis vertically intersects the sliding direction of the tableware D, and the brush bristles are raised upward (in the direction of the rotation axis) from the substrate. is a brush. The washing nozzle 8 in the second stage sprays the dish D with water for rinsing the dish D. A drying nozzle 9 blows air to the dish plate D for blowing off water adhering to the dish plate D. - 特許庁

Therefore, the dish D put into the dish inlet 3 is washed with water blown out from the first-stage washing nozzle 6 while sliding to the dish outlet 4 by the rotation of the pair of conveying screws S1 and S2. Then, it is brushed by the rotating brushes 7U and 7L, rinsed with water blown out from the second stage washing nozzle 8, and dried with air blown out from the drying nozzle 9 to be in a clean state. The washed dish plates D in a clean state are piled up on the plate discharge port 4 from below.

FIG. 4 is a system configuration diagram of the dish washing apparatus 1. As shown in FIG. The dishwashing device 1 includes a screw drive motor 13 that drives the conveying screws S1 and S2. The dish washing apparatus 1 also includes a hot water storage tank 23 for storing water to be sent to the first-stage washing nozzle 6 and the second-stage washing nozzle 8, and sends washing water from the hot water storage tank 23 to the washing nozzles 6 and 8. A cleaning water pump 16 and an electromagnetic valve 17 for keeping the water level of the hot water storage tank 23 within a certain range are provided. The dishwashing apparatus 1 also includes a detergent tank 15 and a detergent pump 14 for adding detergent to the water flowing from the solenoid valve 17 to the first stage washing nozzle 6 . The dishwashing device 1 also includes a blower 18 that sends air to the drying nozzles 9 . The screw drive motor 13 , detergent pump 14 , rinse water pump 16 , solenoid valve 17 and blower 18 are controlled by a controller 20 which is linked to a dish sensor 19 . The plate sensor 19 is an optical sensor that detects the presence or absence of the plate D loaded in the plate insertion port 3 . The plate sensor 19 detects the dish plate D
is detected, controller 20 operates screw drive motor 13, detergent pump 14, wash water pump 16, and blower 18. Further, while the dish sensor 19 is not detecting the dish D, the controller 20 stops the screw drive motor 13, the detergent pump 14, the washing water pump 16 and the blower 18.

In addition to the first stage washing nozzle 6 and the second stage washing nozzle 8 for spraying washing water onto the dish D, the dish washing apparatus 1 also includes a dish washing chamber in which the dish D is washed. An internal washing nozzle group 24 is provided for washing the inside. The internal washing nozzle group 24 is a nozzle provided in parallel with the second stage washing nozzle 8 to which detergent is not added in the washing water flow path configuration of the dish washing apparatus 1. can be blown out. A solenoid valve 25 is provided in front of the internal washing nozzle group 24, and the washing water is blown out from the internal washing nozzle group 24 even while the washing water is being blown out from the second stage washing nozzle 8. can be stopped.

FIG. 5 is a diagram showing an example of the mounting position of the internal cleaning nozzle. FIG. 5 shows the internal structure of the dish washing apparatus 1 in the vicinity of the dish inlet 3. As shown in FIG. Inside the dish washing apparatus 1, a member forming a washing path 10 for washing the dish D while sliding in the transverse direction extends laterally from the lower portion of the dish insertion port 3. A first support rail 11 and a second support rail 21 are provided on the upper side of the first support rail 11 on the lateral side of the dish inlet 3 and support the dish D being washed from above. there is Further, the plate insertion port 3 is provided with a dropping device 12 for dropping the dish plates D stacked in the plate insertion port 3 into the housing 2 in order from the bottom.

The drop-off device 12 includes two drop-off members R1 and R2 each provided with a groove MK having a size to fit the edge of the dish plate D. Since the drop-off members R1 and R2 are arranged in parallel with an interval slightly narrower than the width of the dish plate D, the dish plates D stacked in the plate insertion port 3 can be supported from below. The dropping members R1 and R2 are members that are rotationally driven in opposite directions, and when the groove MK of the dropping member R1 faces the dropping member R2 side, the groove MK of the dropping member R2 also faces the dropping member R1 side. The rotation angle is adjusted so that the Therefore, when the grooves MK provided in the drop-off members R1 and R2 face each other, when the drop-off members R1 and R2 are rotationally driven so that the grooves MK move downward together, the drop-off members R1 and R2 are rotated. Among the dish plates D stacked in the plate insertion port 3 while being supported by the members R1 and R2, the lowermost dish plate D is fitted into two grooves MK respectively provided in the drop-down members R1 and R2, and the plate is inserted. It will be dropped into the housing 2 from the mouth 3 . At the entrance of the washing path 10, a back plate stopper 22 is provided to stop the passage of the dish plate D whose front and back are reversed.

As shown in FIG. 5, the dish washing chamber in which the dishes D are washed has a partition plate 27 that separates the portion where the dish insertion port 3 is provided from the portion where the rotary brush 7U is provided. It is provided so that the scattered matter that scatters due to the rotation of the rotary brush 7U does not jump out of the dish washing machine 1 from the dish insertion port 3. - 特許庁For this reason, a cleaning nozzle 24E is provided on the partition plate 27 on the side of the rotary brush 7U to clean the deposits that have adhered to the partition plate 27 and are scattered by the rotation of the rotary brush 7U. Washing nozzles 24B and 24D are provided in the vicinity of the lower side of the partition plate 27 for washing the deposits that are scattered around the rotating brush 7U by the rotation of the rotating brush 7U and attached to the inner wall surface of the dish washing chamber. It is In addition, cleaning nozzles 24A and 24C are provided below the plate inlet 3 for cleaning adherents that are scattered by the rotation of the rotary brush 7U, pass through the bottom side of the partition plate 27, and adhere to the inside of the plate inlet 3. is provided. Each of the cleaning nozzles 24A to 24E jets cleaning water from a small opening at the tip with a predetermined spreading angle. The spread angle and attachment angle of each of the washing nozzles 24A to 24E are adjusted so that the washing water can be sprayed onto the inner wall surface of the dish washing chamber and appropriate portions of the conveying screws S1 and S2. In addition,
Although not shown in FIG. 5, pipes are connected to the cleaning nozzles 24A to 24E.

FIG. 6 is a diagram showing an example of a site cleaned by the internal cleaning nozzle group 24. As shown in FIG. The cleaning nozzle 24E is provided on the rotating brush 7U side of the partition plate 27, and sprays cleaning water toward the surface of the partition plate 27 on the rotating brush 7U side. Also, the washing nozzles 24B and 24D spray washing water along the wall surface of the dish washing chamber 26 from near the lower side of the partition plate 27 toward the rotating brush 7U. The washing nozzles 24A and 24C spray washing water upward along the wall surface of the dish washing chamber 26 from below the dish inlet 3. As shown in FIG. Therefore, as indicated by diagonal hatching in FIG. 6, the surface of the partition plate 27 on the rotating brush 7U side and the wall surface of the dish washing chamber 26 near the rotating brush 7U and the dish inlet 3 are washed with the washing water. In addition, portions of the conveying screws S1 and S2 which are in contact with the dish D are washed with washing water in the vicinity of the dish insertion opening 3 .

In the dish washing apparatus 1 of the present embodiment, the dish dishes D dropped from the dish inlet 3 into the dish washing chamber 26 are slid one by one along the washing path 10 by the rotating brushes 7U and 7B and washing water. washed. Therefore, the inside of the dish washing chamber 26 is covered with deposits of the dish D scattered by the force of the rotating brushes 7U and 7B. The scattering of deposits on the dish plate D is markedly caused by the rotating brush 7U that brushes the surface of the dish plate D on which food and drink are placed. Therefore, in the dish washing apparatus 1 of the present embodiment, the rotating brush 7U rotates so as to brush the surface of the dish D toward the dish inlet 3, as indicated by the arrow near the rotating brush 7U in FIG. do. Therefore, most of the deposits on the dish D that are scattered by the force of the rotating brush 7U are scattered toward the dish insertion port 3 from the rotating brush 7U. Since the dish D before being washed is put into the dish insertion port 3, the vicinity of the dish insertion port 3 is basically in an environment where deposits of the dish D are likely to adhere. Therefore, in the dish washing apparatus 1 of the present embodiment, by rotating the rotating brush 7U in the above-described direction, the deposits on the dish D scattered by the brushing of the rotating brush 7U are basically removed from the dish D. It is decided to scatter toward the dish insertion port 3 where the deposits of the dust are likely to adhere. Thus, instead of spraying washing water all over the inside of the dish washing chamber 26, the cleanliness of the entire inside of the dish washing chamber 26 can be maintained only by spraying washing water from the rotating brush 7U to the portion on the side of the dish loading port 3. becomes.

If the rotating brush 7U were to rotate so as to brush the surface of the dish D in the direction opposite to the side of the dish inlet 3, the deposits adhering to the interior of the dish washing chamber 26 would be deposited near the dish inlet 3. For example, it also adheres to the plate outlet 4 side from the rotating brush 7U. Therefore, in this case, it is necessary to spray washing water all over the inside of the dish washing chamber 26, which increases the amount of washing water and is not economical. On the other hand, with the dishwashing apparatus 1 of the above-described embodiment, the cleanliness of the entire dishwashing chamber 26 can be maintained simply by spraying washing water from the rotating brush 7U to the portion on the dish inlet 3 side. Compared with the case where washing water is sprayed all over the inside of the dish washing chamber 26, the amount of washing water is less and it is economical.

The cleaning of the interior of the dish washing chamber 26 using the internal cleaning nozzle group 24 may be performed at any timing, but for example, several seconds to several tens of seconds before the start of the washing operation of the dish D or after the end of the washing operation. It is effective to do so.

For example, in the case of cleaning the dish D before starting the cleaning operation and after the cleaning operation ends, when the dish D is detected by the dish sensor 19, the control device 20 opens the electromagnetic valve 25 to rotate the screw drive motor 13 and the detergent pump. 14, the washing water pump 16 and the blower 18 are operated, and after several seconds the electromagnetic valve 25 is closed. When the dish sensor 19 stops detecting the dish D, the controller 20 stops the screw drive motor 13, the detergent pump 14, the washing water pump 16, and the blower 18 several seconds after the electromagnetic valve 25 is opened. to close the electromagnetic valve 25. If the control device 20 operates in this way, the inside of the dish washing chamber 26 using the inner washing nozzle group 24 can be washed before the washing operation of the dish D is started and after the washing operation is finished.

If the washing water is sprayed before the start of the washing operation of the dish D, the part on the side of the dish insertion port 3 from the rotating brush 7U becomes wet before brushing, so that the adhering matter scattered by the brushing hardens and sticks. is suppressed, and the cleanliness in the dish washing chamber 26 is enhanced. Further, if the washing water is sprayed after the washing operation of the dish D is completed, washing is performed before the sticking matter scattered by the brushing is hardened and solidified, so that the cleanliness in the dish washing chamber 26 is improved.

Further, the cleaning of the inside of the dish washing chamber 26 may be performed while the screw drive motor 13, the detergent pump 14 and the blower 18 are stopped. For example, an electromagnetic valve is provided in the middle of the path from the washing water pump 16 to the washing nozzles 6 and 8, and the path of the electromagnetic valve 25 from the washing water pump 16 to the internal washing nozzle group 24 is arranged in parallel with this path. If provided, it becomes possible to blow off the washing water only from the internal washing nozzle group 24 without blowing off the washing water from the washing nozzles 6 and 8 . Therefore, for example, it is also possible to realize an internal washing operation in which only the internal washing of the dish washing chamber 26 is performed.

DESCRIPTION OF SYMBOLS 1... Dish washing apparatus 2... Case 3... Plate inlet 4... Plate outlet 5... Guide bar 6... First-stage washing nozzles 7U, 7L... Rotating brush 8... Second Second-stage washing nozzle 9 Drying nozzle 10 Washing path 11 First support rail 12 Skipping device 13 Screw driving motor 14 Detergent pump 15 Detergent tank 16 Washing water Pump 17 Solenoid valve 18 Blower 19 Plate sensor 20 Control device 21 Second support rail 22 Back plate stopper 23 Hot water storage tank 24 Internal cleaning nozzle groups 24A, 24B, 24C, 24D, 24E Washing nozzle 25 Solenoid valve 26 Dish washing chamber 27, 28 Partition plate C Operation panel S1, S2 Conveying screws M1, M2, MK Groove D Dish plate R1, R2... Dropping member

Claims (4)

a dish receiving opening into which the dishes to be washed are placed;
a dish-washing chamber through which the dishes that have entered from the dish receiving opening pass;
a dish outlet for discharging the dishes washed in the dish washing room;
a rotating brush installed in the dish washing chamber for brushing the surface of the dish plate received from the dish receiving opening toward the dish receiving opening;
an internal washing nozzle for washing the inside of the dish washing chamber by spraying washing water from a portion of the interior of the dish washing chamber on the side of the dish receiving port where the brush is arranged,
Dish washing equipment. The internal washing nozzle sprays washing water before starting the washing operation of the dishes.
A dishwashing device according to claim 1. The internal washing nozzle sprays washing water after the washing operation of the dishes is finished.
A dishwashing device according to claim 1 or 2. In the dish washing room, the dish plates entering from the dish receiving port are slid one by one,
The rotating brush brushes the dish plate with bristles rising from the outer peripheral surface of the rotating shaft whose central axis intersects the sliding direction of the dish plate.
A dishwashing device according to any one of claims 1 to 3.

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