JP2018187496A - Tableware washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tableware washing device that stably supplys wash water from a wash water storage tank at an outlet side to a wash water storage tank at an inlet side at low cost and without enlarging the tableware washing device.SOLUTION: A tableware washing device 1 includes: a conveyance part 2 for conveying tableware P; a first washing part comprising a rough washing part 3 and a detergent washing part 4 for washing the tableware P conveyed by the conveyance part 2; and a second washing part comprising a rinse washing part 5 and a finishing washing part 6 composed of the plurality of washing parts for washing the tableware P washed by the first washing part. In the portion of a chain belt 21 positioned in the first washing part, a part of the chain belt 21 on the front and rear sides of a central position in the conveyance direction is inclined relative to the horizontal direction so that in each of the washing parts of the first washing part, the central position of the chain belt 21 located in the center in the conveyance direction of a region to which wash water from a washing nozzle is sprayed is lower than the positions on the front and rear sides of the central position in the conveyance direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a dishwashing apparatus for washing dishes with washing water while transporting dishes, and in particular, in a plurality of washing steps, washing water used for washing dishes is collected, and the collected washing water is reused for washing dishes. The present invention relates to a dishwasher used.

  2. Description of the Related Art Conventionally, when washing a large amount of tableware, a tableware washing apparatus that uses a washing nozzle to spray washing water onto a tableware while conveying a plurality of tableware by a conveying unit such as a conveyor has been used. The dishwashing apparatus is divided into a plurality of sections depending on the purpose of washing, such as rough washing, detergent washing, rinsing washing, and finishing washing. The conveyance part is arrange | positioned in the dishwashing apparatus so that tableware may be conveyed by these divided sections.

  For example, Patent Literature 1 proposes a tableware cleaning apparatus that cleans tableware in the order of a main cleaning step, a rinsing cleaning step, and a finishing cleaning step while conveying tableware in a transfer unit. The dish washing apparatus is provided with a washing nozzle for spraying washing water on the tableware to perform washing in each step. The washing water discharged from the washing nozzle is collected in the storage tank, and the collected washing water is pumped to the washing nozzle to be reused for dish washing.

  Supply of cleaning water (clean water) to the entire dishwashing apparatus is performed by supplying clean water to the cleaning nozzle in the final cleaning process, and supply of cleaning water to the storage tank in the main cleaning process is performed in the final cleaning process. The cleaning water is sequentially overflowed from the storage tank to the storage tank in the main cleaning step.

JP 2005-305097 A

  However, in the tableware washing apparatus as disclosed in Patent Document 1, the washing water sequentially overflows from the storage tank (the storage tank on the outlet side of the apparatus) in the final cleaning process to the storage tank (the storage tank on the inlet side of the apparatus) in the main cleaning process. However, a desired amount of cleaning water may not be stably supplied to the storage tank in the main cleaning process. In particular, if the transport amount of tableware changes or the shape and size of the tableware change, the washing water adhering to the tableware may not be collected in the storage tank and may be taken out from the process. It is difficult to overflow the wash water.

  In view of such points, for example, it may be possible to further provide a supply pump or the like so that the cleaning water is supplied from the outlet-side storage tank to the inlet-side storage tank. In addition to increasing the cost of the dishwasher, the size of the dishwasher is also increased.

  The present invention has been made in view of such a point, and the object of the present invention is to clean the inlet side from the washing water storage tank on the outlet side without increasing the size of the dishwasher. An object of the present invention is to provide a dishwashing apparatus capable of stably supplying washing water to a water storage tank.

  In view of the above problems, a dishwashing apparatus according to the present invention is a dishwashing apparatus for washing dishes, and is transported by a transport unit that transports tableware from the entrance to the outlet of the dishwashing apparatus, and the transport unit. A first cleaning unit that cleans the tableware; and a second cleaning unit that cleans the tableware cleaned by the first cleaning unit and transported by the transport unit, wherein the first cleaning unit and the second cleaning unit Each of the cleaning units includes a cleaning nozzle that sprays cleaning water onto the tableware transported by the transporting unit, a cleaning tank that collects the cleaning water discharged from the cleaning nozzle, and stores the recovered cleaning water. A pumping unit that pumps the stored cleaning water to the cleaning nozzle, and the pumping unit of the second cleaning unit divides the cleaning water to be pumped to the cleaning nozzle of the second cleaning unit. The cleaned water is supplied to the storage tank of the first cleaning unit. In, characterized in that it is connected to the first cleaning portion.

  According to the present invention, in each of the first cleaning unit and the second cleaning unit, the cleaning water sprayed on the tableware from the cleaning nozzle is collected and stored in the storage tank, and the cleaning water stored in the storage tank is again In order to use it for washing dishes, it is pumped by a pumping section to a cleaning nozzle. That is, in the first cleaning unit and the second cleaning unit, the cleaning water flows and circulates in the order of the cleaning nozzle, the storage tank, and the pumping unit.

  Here, since the tableware conveyed by the conveyance unit is washed in the order of the first washing unit and the second washing unit, a part of the washing water of the first washing unit adheres to a part of the tableware and the conveyance unit. And taken out from the first cleaning section. However, in the present invention, the wash water pumped by the pumping unit of the second cleaning unit is diverted and the diverted wash water is supplied to the storage tank of the first cleaning unit. Regardless of the shape or the like, a desired amount of cleaning water can be supplied to the storage tank of the first cleaning unit. Further, since the cleaning water is supplied to the storage tank of the first cleaning unit using the pumping unit for pumping the cleaning water to the cleaning nozzle of the second cleaning unit, a new pumping device such as a pump is added. In addition, it is possible to secure the size of the tableware washing apparatus as before (without increasing the size) and to replenish the washing water in the storage tank of the first washing unit at a low cost.

  As a more preferable aspect, the pumping unit of the second cleaning unit includes an adjustment valve that adjusts the supply amount of the cleaning water supplied to the storage tank of the first cleaning unit. According to this aspect, the supply amount of the cleaning water supplied to the storage tank of the first cleaning unit is adjusted as necessary by adjusting the opening / closing or opening of the adjustment valve of the pumping unit of the second cleaning unit. An appropriate amount of cleaning water can be supplied (supplemented) to the storage tank of the first cleaning unit.

  As a more preferred embodiment, each of the storage tank of the first cleaning unit and the storage tank of the second cleaning unit is provided with a water amount detection sensor that detects the amount of cleaning water in the storage tank, The dish washing apparatus includes a control unit that controls the opening degree of the adjustment valve based on the water amount detected by the water amount detection sensor of the first cleaning unit and the water amount detection sensor of the second cleaning unit.

  According to this aspect, the amount of cleaning water in the storage tank of the first cleaning unit is monitored by the water amount detection sensor, and when it is determined that the amount of water is small, the control valve opens or opens the control valve. The cleaning water can be supplied (supplemented) to the storage tank of the first cleaning unit. On the other hand, when the amount of cleaning water in the storage tank of the second cleaning unit decreases or the amount of water suddenly decreases, the control unit closes the adjustment valve or reduces the opening to reduce the first cleaning. The washing water supplied to the storage tank of the part can be restricted. In this way, the cleaning water supplied to the storage tank of the first cleaning unit while monitoring the amount of cleaning water stored in the storage tank of the first cleaning unit and the storage tank of the second cleaning unit with the water amount detection sensor. The supply amount can be adjusted automatically.

  As a more preferable specific aspect, the cleaning nozzle of the second cleaning unit includes a rinsing cleaning nozzle that sprays rinsing cleaning water, and a tableware that has been sprayed with the rinsing cleaning water and transported by the transport unit as finish cleaning water. A cleaning nozzle for spraying clean water, and the storage tank of the second cleaning unit collects the rinse cleaning water discharged from the rinse cleaning nozzle and the final cleaning water discharged from the finishing cleaning nozzle, and the recovered cleaning Rinsing cleaning has a rinsing cleaning water storage tank that stores water as rinsing cleaning water, and the pumping section of the second cleaning section pumps the rinsing cleaning water stored in the rinsing cleaning water storage tank to the rinsing cleaning nozzle. A rinsing cleaning water pumping unit that divides the rinsing cleaning water that is pumped to the rinsing cleaning nozzle, and the rinsing cleaning water that has been split flows into the first cleaning unit; As will be supplied to the storage tank, it is connected to the first cleaning portion.

  According to this aspect, in the second cleaning section, the tableware transported by the transport section is cleaned with the rinse cleaning water sprayed from the rinse cleaning nozzle, and then the finish cleaning water (clean water) sprayed from the finish cleaning nozzle. ). Here, the rinse water and the final rinse water are collected in the rinse water storage tank as rinse water, and the rinse water collected and stored in the rinse tank is rinsed to be reused for washing dishes. Pumped to the cleaning nozzle.

  At this time, the rinsing cleaning water pumping unit for pumping to the rinsing cleaning nozzle is used to divide the rinsing cleaning water pumped to the rinsing cleaning nozzle, and the split rinsing cleaning water is supplied to the storage tank of the first cleaning unit. can do.

  In this way, the final cleaning water once used for cleaning is not only circulated for reuse in the second cleaning unit, but also supplied to the storage tank of the first cleaning unit and reused in the first cleaning unit. be able to. As a result, the wash water supplied from the outside to the dishwasher during dishwashing can be limited to the clean water used by the finishing nozzle, and the amount of wash water (clean water) used by the dishwasher as a whole can be reduced. Can do.

  As a more preferable aspect, the first cleaning unit collects the detergent cleaning water discharged from the detergent cleaning nozzle, the detergent cleaning nozzle spraying the detergent cleaning water containing the detergent on the tableware transported by the transport unit, A detergent cleaning section comprising a detergent cleaning water storage tank for storing the recovered detergent cleaning water, and a detergent cleaning water pumping section for pumping the detergent cleaning water stored in the detergent cleaning water storage tank to the detergent cleaning nozzle. The rinse cleaning water pumping unit is connected to the detergent cleaning unit so that the separated rinse cleaning water is supplied to the detergent cleaning water storage tank.

  According to this aspect, the detergent cleaning water accommodated in the detergent cleaning water storage tank has a predetermined concentration of detergent added to the cleaning water, and the rinsing cleaning water separated by the rinsing cleaning water pumping unit stores the detergent cleaning water. Since a desired amount is supplied to the tank, the detergent concentration in the detergent washing water storage tank can be easily managed.

  According to the present invention, the washing water can be stably supplied from the washing water storage tank on the outlet side to the washing water storage tank on the inlet side without increasing the size of the tableware washing apparatus.

The typical conceptual diagram of the tableware washing apparatus concerning the embodiment of the present invention.

Hereinafter, a dishwashing apparatus according to an embodiment of the present invention will be described with reference to FIG.
1. About the whole structure of the tableware washing apparatus 1 As shown in FIG. 1, the tableware washing apparatus 1 which concerns on this embodiment is an apparatus which wash | cleans with the wash water, conveying the tableware P with the conveyor 2 (conveyance part). The dish washing apparatus 1 includes a rough washing unit 3 for roughly washing the tableware P, a detergent washing unit 4 for washing the roughly washed tableware P with a detergent, a rinse washing unit 5 for rinsing and washing the tableware P washed with the detergent, and a rinse washing. A finishing cleaning section 6 for finishing and cleaning the tableware P is provided.

  Here, the rough cleaning unit 3 and the detergent cleaning unit 4 correspond to the first cleaning unit in the present invention, and the rinse cleaning unit 5 and the finish cleaning unit 6 correspond to the second cleaning unit in the present invention. . In FIG. 1, a pipe through which water such as washing water flows is indicated by a one-dot chain line, and a signal line for sending an electric signal is indicated by a broken line.

  The conveyor 2 is a device that conveys the tableware P from the inlet 11 of the tableware washing apparatus 1 into which the tableware P is carried toward the outlet 13 from which the tableware P is carried out. The dish washing apparatus 1 is formed with a conveyance path 12 that conveys the tableware P to the outlet 13 while washing the tableware P introduced from the inlet 11. The conveyance passage 12 is a passage through which the tableware P passes continuously from the rough cleaning unit 3 to the finishing cleaning unit 6 described above.

  The conveyor 2 includes a chain belt 21 that moves while placing the tableware P from the inlet 11 to the outlet 13 of the tableware washing apparatus 1 (specifically, the conveyance path 12), a driven roller 22 around which the chain belt 21 is wound, and a drive. And a roller 23. The drive roller 23 is connected to a drive motor 25 via a drive belt 24.

  With this configuration, when the drive motor 25 is driven, the drive roller 23 is rotated via the drive belt 24, and the chain belt 21 wound around the drive roller 23 rotates the driven roller 22 while conveying the conveyance path 12. Move in. Thereby, the tableware P placed on the chain belt 21 can be transported in the transport path 12 from the rough cleaning section 3 to the finish cleaning section 6. Hereinafter, the apparatus configuration from the rough cleaning section 3 to the finish cleaning section 6 will be described in detail.

2. About the rough cleaning unit 3 The rough cleaning unit 3 rough-cleans the tableware P in order to wash away the coarse dirt adhering to the used tableware P conveyed by the conveyor 2 from the entrance 11 of the tableware cleaning device 1 with the rough cleaning water w1. Section to be washed. The rough cleaning unit 3 includes a rough cleaning nozzle 31 that sprays the rough cleaning water w1 onto the tableware P conveyed by the conveyor 2 from above and below. The rough cleaning nozzle 31 is a nozzle pipe (not shown) in which an axis is arranged in a direction crossing the conveyor 2 (width direction of the chain belt 21 of the conveyor 2), and in the axis direction of the nozzle pipe. A structure including at least a plurality of nozzle tips (not shown) attached to the nozzle pipe at predetermined intervals along the pipe.

  As shown in FIG. 1, three rough cleaning nozzles 31 are arranged on the upper and lower sides along the conveying direction of the tableware P across the chain belt 21 of the conveyor 2. However, if the tableware P can be roughly cleaned with the rough cleaning water w1, the number and arrangement of the rough cleaning nozzles 31 are not limited thereto.

  The rough cleaning unit 3 includes a rough cleaning water storage tank 32 that recovers the rough cleaning water w <b> 1 discharged from the rough cleaning nozzle 31 and stores the recovered rough cleaning water w <b> 1 below the rough cleaning nozzle 31. A drain port 32a is provided at the bottom of the rough cleaning water storage tank 32, and an overflow of the rough cleaning water w1 is discharged from the rough cleaning water storage tank 32 due to overflow as the rough cleaning water w1 increases. A drainage port 32b is provided. The rough cleaning water w1 drained from the drain port 32a at the end of the operation of the apparatus and the rough cleaning water w1 discharged from the overflow drain port 32b during the operation of the apparatus (that is, at the time of cleaning) are both supplied through the drain pipe 79. Drained outside.

  Above the rough cleaning water storage tank 32, a water supply port 36 for supplying rinse cleaning water w3, which will be described later, is disposed. Inside the rough cleaning water storage tank 32, the amount of stored rough cleaning water w1 ( A water amount detection sensor 37 for detecting (accommodation amount) is arranged. A signal corresponding to the water amount of the rough cleaning water w <b> 1 detected by the water amount sensor 37 is input to the control unit 8 via the signal line 81.

  The rough cleaning unit 3 includes a pressure feed pump 33 that pumps the rough cleaning water w1 stored in the rough cleaning water storage tank 32 to the rough cleaning nozzle 31, and a rough cleaning water w1 that is pumped by the pressure pump 33 to the rough cleaning nozzle 31. And a water supply pipe 34 for supplying water. The pressure feed pump 33 and the water feed pipe 34 correspond to the “pressure feed section of the first cleaning section” in the present invention.

  Further, the position of the chain belt 21 (on the conveyor 2) in the transport direction center of the region where the rough cleaning water w1 is sprayed by the rough cleaning nozzle 31 is lower than the position of the chain belt 21 before and after the tableware P in the transport direction. Thus, the chain belt 21 before and after the transport direction of the central chain belt 21 is inclined with respect to the horizontal direction. As a result, the tableware P being conveyed is inclined so as to become lower toward the center, and the rough cleaning water w1 sprayed from the rough cleaning nozzle 31 and attached to the tableware P is removed below the rough cleaning nozzle 31. It can fall to the rough washing water storage tank 32, and this can be collect | recovered efficiently.

3. About detergent washing part 4 In order to wash away dirt, such as oil which adhered to tableware P after rough washing conveyed from rough washing part 3 by conveyor 2, detergent washing part 4 is washed with detergent washing water w2 containing detergent. This is a section for cleaning the tableware P with detergent. The detergent cleaning unit 4 includes a detergent cleaning nozzle 41 that sprays detergent cleaning water w2 on the tableware P conveyed by the conveyor 2 from above and below. The detergent cleaning nozzle 41 has the same structure as the rough cleaning nozzle 31. The detergent cleaning nozzles 41 are arranged three above and below along the conveying direction of the tableware P across the chain belt 21 of the conveyor 2, but if the tableware P can be cleaned with the detergent cleaning water w2, The number and arrangement of the detergent cleaning nozzles 41 are not limited to this.

  The detergent washing unit 4 includes a detergent washing water storage tank 42 that collects the detergent washing water w <b> 2 discharged from the detergent washing nozzle 41 and accommodates the collected detergent washing water w <b> 2 below the detergent washing nozzle 41. A drain outlet 42a is provided at the bottom of the detergent cleaning water storage tank 42. At the end of the operation of the apparatus, the detergent cleaning water w2 discharged from the drain outlet 42a is connected to the drain pipe 79 in the same manner as the rough cleaning water w1. And drained to the outside of the device.

  Above the detergent cleaning water storage tank 42, a water supply port 46 for supplying rinse cleaning water w3 described later is disposed. Inside the detergent cleaning water storage tank 42, a water amount detection sensor 47 for detecting the amount of water (accommodation amount) of the stored detergent cleaning water w2, and a concentration sensor for measuring the detergent concentration of the stored detergent cleaning water w2 (FIG. And a temperature sensor (not shown) for measuring the temperature of the stored detergent cleaning water w2. A signal corresponding to the amount of detergent cleaning water w 2 detected by the water amount detection sensor 47 is input to the control unit 8 via the signal line 81. Signals from the concentration sensor and the temperature sensor are also input to the control unit 8.

  Further, a heater 48 for heating the stored detergent cleaning water w2 is disposed inside the detergent cleaning water storage tank 42. The heater 48 heats the stored detergent cleaning water w2 such that the detergent cleaning water w2 is sprayed from the detergent cleaning nozzle 41 to the tableware P at a predetermined temperature (for example, 70 ° C.). Specifically, the control unit 8 controls the heating temperature of the heater 48 based on the temperature detected by the temperature sensor described above.

  The detergent cleaning unit 4 presses the detergent cleaning water w2 stored in the detergent cleaning water storage tank 42 to the detergent cleaning nozzle 41, and the detergent cleaning water w2 pumped by the pressure pump 43 to the detergent cleaning nozzle 41. A water supply pipe 44 for supplying water. The pressure feed pump 43 and the water feed pipe 44 correspond to the “pressure feed section of the first cleaning section (detergent cleaning water pressure feed section)” in the present invention.

  A water return inclined plate 76 is disposed between the detergent cleaning nozzle 41 of the detergent cleaning unit 4 and the rough cleaning nozzle 31 of the rough cleaning unit 3. The water return inclined plate 76 has one side (rough cleaning unit 3 side) inclined from the center of the plate in the transport direction to the lower side where the rough cleaning water storage tank 32 is located, and the other side (detergent cleaning unit 4 side) is detergent cleaned. The water storage tank 42 is inclined downward. Thereby, after being discharged from the rough cleaning nozzle 31 to the tableware P, the rough cleaning water w1 that adheres to the tableware P and falls from the tableware P, or the rough cleaning water w1 scattered from the tableware P does not move to the detergent cleaning unit 4. Thus, the rough cleaning water w1 can be collected in the rough cleaning water storage tank 32. Similarly, after the detergent cleaning nozzle 41 discharges to the tableware P, the detergent cleaning water w2 that adheres to the tableware P and falls from the tableware P, or the detergent cleaning water w2 scattered from the tableware P does not move to the rough cleaning unit 3. As described above, the detergent cleaning water w <b> 2 can be collected in the detergent cleaning water storage tank 42.

  Further, the position of the chain belt 21 (on the conveyor 2) in the transport direction center of the region where the detergent cleaning water w2 is sprayed by the detergent cleaning nozzle 41 is lower than the position of the chain belt 21 before and after the tableware P in the transport direction. Thus, the chain belt 21 before and after the transport direction of the central chain belt 21 is inclined with respect to the horizontal direction. As a result, the tableware P being transported is inclined so as to become lower toward the center, and the detergent cleaning water w2 sprayed from the detergent cleaning nozzle 41 and adhering to the tableware P is removed below the detergent cleaning nozzle 41. It can fall to the detergent washing water storage tank 42, and this can be collect | recovered efficiently.

4). About Rinse Cleaning Unit 5 The rinsing cleaning unit 5 is a section for rinsing and cleaning the tableware P in order to wash away the detergent and the like adhered to the tableware P after the detergent cleaning carried by the conveyor 2 from the detergent cleaning unit 4 with the rinse water w3. It is. The rinsing cleaning section 5 includes a rinsing cleaning nozzle 51 that sprays rinsing cleaning water w3 onto the tableware P conveyed by the conveyor 2 from above and below. The rinse cleaning nozzle 51 has the same structure as the rough cleaning nozzle 31. One rinsing nozzle 51 is arranged above and below the chain belt 21 of the conveyor 2. If the tableware P can be rinsed with the rinsing water w3, the number and arrangement of the rinsing nozzles 51 are set. Is not limited to this.

  The rinse cleaning unit 5 includes a rinse water storage tank 52 that collects the rinse water w3 discharged from the rinse nozzle 51 and accommodates the collected rinse water w3 below the rinse nozzle 51. A drain outlet 52a is provided at the bottom of the rinse water storage tank 52. At the end of operation of the apparatus, the rinse water w3 discharged from the drain 52a is drained in the same manner as the wash water in the other tanks. It is drained to the outside of the apparatus through a pipe 79.

  Above the rinse water storage tank 52, a water supply port 56 for supplying clean water w4 described later is disposed. In the rinse water storage tank 52, a water amount detection sensor 57 for detecting the amount of water (accommodation amount) of the rinse water W3 accommodated and a temperature sensor (not shown) for measuring the temperature of the rinse water w3 accommodated. And are arranged. A signal corresponding to the water amount of the rinse water w3 detected by the water amount sensor 57 and a signal from the temperature sensor are input to the control unit 8 via the signal line 81.

  Further, a heater 58 for heating the rinse water W3 accommodated therein is disposed inside the rinse water tank 52, and the rinse water w3 is set at a predetermined temperature (for example, 80 ° C.) from the rinse nozzle 51. The controller 8 controls the heating temperature of the heater 58 so as to be sprayed onto P.

  The rinsing cleaning unit 5 pumps the rinsing cleaning water w3 stored in the rinsing cleaning water storage tank 52 to the rinsing cleaning nozzle 51, and the rinsing cleaning water w3 pumped by the pumping pump 53 to the rinsing cleaning nozzle 51. A water supply pipe 54 for supplying water.

  Further, the water supply pipe 54 divides the rinsing cleaning water w3 pressure-fed to the rinsing cleaning nozzle 51, and the divided rinsing cleaning water w3 corresponds to the first cleaning section of the present invention, the rough cleaning water storage tank 32, and the detergent. It is connected to the water supply pipes 54A and 54B so as to be supplied to each of the washing water storage tanks 42.

  Specifically, each of the water supply pipes 54 </ b> A and 54 </ b> B is connected to water supply ports 36 and 46 disposed above the rough cleaning water storage tank 32 and the detergent cleaning water storage tank 42. Adjustment valves 55A and 55B for adjusting the supply amounts of the rinse water w3 in the rough cleaning water storage tank 32 and the detergent cleaning water storage tank 42 are attached to the water supply pipes 54A and 54B, respectively. The pressure feed pump 53, the water feed pipe 54, the water feed pipes 54A and 54B, and the regulating valves 55A and 55B correspond to the “pressure feed section (rinse wash water feed section)” in the present invention.

  The adjustment valve 55A for adjusting the supply amount of the rinsing water w3 to the rough cleaning water storage tank 32 is the water amount of the rough cleaning water storage tank 32 detected by the water amount detection sensor 37 and the rinsing cleaning detected by the water amount detection sensor 57. Based on the amount of water in the water storage tank 52, the control valve 8 is connected to the control unit 8 via a signal line 82 so that the opening degree of the adjustment valve 55 </ b> A can be adjusted. On the other hand, the adjustment valve 55B that adjusts the supply amount of the rinse water w3 to the detergent cleaning water storage tank 42 is detected by the water amount of the detergent cleaning water storage tank 42 detected by the water amount detection sensor 47 and the water amount detection sensor 57. The signal line 82 is adjusted so that the opening of the adjustment valve 55B can be adjusted based on the amount of water in the rinse water storage tank 52 and, if necessary, the concentration of the concentration sensor for measuring the concentration of the detergent in the detergent cleaning water w2. Via the control unit 8.

  Between the rinse cleaning nozzle 51 of the rinse cleaning unit 5 and the detergent cleaning nozzle 41 of the detergent cleaning unit 4, a water return inclined plate 77 that is inclined downward toward the detergent cleaning unit 4 is disposed. By disposing the water return inclined plate 77, the detergent cleaning water w2 that is released from the detergent cleaning nozzle 41 to the tableware P and then drops from the tableware P after being discharged to the tableware P, or the detergent cleaning water w2 that has scattered from the tableware P. However, the detergent cleaning water w <b> 2 can be collected in the detergent cleaning water storage tank 42 so as not to move to the rinse cleaning unit 5. As a result, it is possible to restrict the detergent cleaning water w2 from being taken out from the detergent cleaning unit 4 to the rinse cleaning unit 5, and to reduce the amount of detergent mixed into the rinse cleaning water w3.

  Further, the upper end between the rinse cleaning water storage tank 52 and the detergent cleaning water storage tank 42 is higher than the upper ends of the detergent cleaning water storage tank 42 and the rough cleaning water storage tank 32. It is possible to prevent the detergent cleaning water w2 stored in the detergent cleaning water storage tank 42 from flowing into the rinse cleaning water storage tank 52 in which the rinse cleaning water w3 is stored. Thereby, it is possible to prevent the detergent of the detergent washing water w2 from being mixed into the rinse washing water w3 in the rinse washing water storage tank 52 for washing away the detergent or the like adhering to the tableware P. Further, the rinse water w3 from the rinse water reservoir 52 is prevented from flowing into the detergent rinse water reservoir 42 due to overflow, and the detergent concentration of the detergent rinse water w2 in the detergent rinse water reservoir 42 is prevented from decreasing. can do.

5. About the final cleaning unit 6 The final cleaning unit 6 is configured to wash away the rinse cleaning water w3 and the like adhering to the tableware P after the rinse cleaning, which is conveyed from the rinse cleaning unit 5 by the conveyor 2, with the clean water w4 that is the final cleaning water. This is a section for finishing and cleaning the tableware P. The finishing cleaning unit 6 includes a finishing cleaning nozzle 61 that sprays clean water (finishing cleaning water) w4 onto the tableware P conveyed by the conveyor 2 from above and below. The finishing cleaning nozzle 61 has the same structure as the rough cleaning nozzle 31. The finish cleaning nozzle 61 is arranged one above the other on both sides of the chain belt 21 of the conveyor 2. However, if the tableware P can be finished and cleaned with clean water (finish cleaning water) w4, the finish cleaning nozzle 61 is provided. However, the number and arrangement of are not limited to this. In the present embodiment, the clean water (finish cleaning water) w4 discharged from the finish cleaning nozzle 61 is collected in the rinse water storage tank 52 described above and stored in the rinse water storage tank 52 as the rinse water w3.

  Here, the clean water w4 supplied to the finish cleaning nozzle 61 is supplied from the supply port 70 to the tableware cleaning apparatus 1. The clean water w4 fed from the clean water pipe 71 in the apparatus passes through the heat exchanger 72 and is heated. The heat exchanger 72 is attached above the rough cleaning unit 3 in the dishwashing apparatus 1, and is heated by the above-described heaters 48 and 58 and used to heat the steam or steam of the cleaning water used for cleaning the tableware P. Is a device that heats the clean water w4.

  The water supply pipe 73 connected to the heat exchanger 72 and supplying the clean water w4 discharged from the heat exchanger 72 is branched so that the clean water w4 to be supplied is directed to the finish cleaning nozzle 61 and the water supply port 56. Yes. A flow rate adjustment valve 74 is attached to the upper water pipe 73 toward the finish cleaning nozzle 61, and an open / close valve 75 is attached to the upper water pipe 73 toward the water supply port 56. The opening degree of the flow rate adjusting valve 74 and the opening / closing of the opening / closing valve 75 are controlled by a control signal input via the signal line 82.

  A blower for draining rinsing water w3 adhering to the surface of the tableware P after rinsing and cleaning is provided between the finishing cleaning nozzle 61 of the finishing cleaning unit 6 and the rinsing cleaning nozzle 51 of the rinsing cleaning unit 5. 9 is arranged. The blower 9 is arrange | positioned so that the compressed air A may be sprayed on the tableware P conveyed with the chain belt 21 with a nozzle from upper direction. Furthermore, the chain belt 21 of the conveyor 2 to which the compressed air A of the blower 9 is blown is inclined upward (becomes an upward inclined surface) as it proceeds in the conveying direction of the tableware P.

  By blowing the compressed air A from the blower 9 onto the tableware P, the rinse washing water w3 adhering to the tableware P is cut off from the tableware P. Thus, the amount of spray of clean water (finish cleaning water) w4 sprayed on the tableware P from the finish cleaning nozzle 61 of the finish cleaning unit 6 can be reduced. Further, since the chain belt 21 of the conveyor 2 directly below the blower 9 is inclined so as to form a climbing inclined surface, the rinse cleaning water w3 adhering to the inclined tableware P is in a state of being easily dropped, and the finish cleaning section 6 can be reduced.

6). 6. Cleaning method of tableware P using the tableware cleaning apparatus 1 6-1. Preparation for Operation of the Tableware Cleaning Device 1 First, as a preparation stage for the operation of the tableware cleaning device 1, first, the clean water w4 is supplied from the supply port 70 to the tableware cleaning device 1. The supplied clean water w4 flows in the order of the clean water pipe 71, the heat exchanger 72, and the clean water pipe 73, passes through the on-off valve 75 opened by the control signal of the control unit 8, and is supplied to the rinse water storage tank 52. The At this time, the flow rate adjusting valve 74 may be closed by a control signal from the control unit 8.

  The clean water w4 of the rinse water storage tank 52 is pumped by the pump pump 53 and is opened by the control signals of the control unit 8 from the water supply pipes 54A and 54B through the adjustment valves 55A and 55B. Sent to. Accordingly, the cleaning water is supplied to each of the rough cleaning water storage tank 32 and the detergent cleaning water storage tank 42. In the detergent cleaning water storage tank 42, detergent is supplied from a detergent supply device (not shown) so as to obtain a desired detergent concentration. As a result, the detergent cleaning water w <b> 2 is accommodated in the detergent cleaning water storage tank 42. Also, the detergent cleaning water w2 stored in the detergent cleaning water storage tank 42 and the rinse cleaning water w3 stored in the rinse cleaning water storage tank 52 are heated to the set temperatures by the heaters 48 and 58, respectively. The In this state, the drive motor 25 and the pressure feed pumps 33, 43, 53 are driven.

6-2. Cleaning Tableware P by Tableware Cleaning Device 1 A method for cleaning tableware P will be described below. The tableware P placed on the chain belt 21 of the conveyor 2 is conveyed from the inlet 11 of the tableware washing apparatus 1 into the conveyance path 12. The tableware P that has passed through the inlet 11 of the tableware washing apparatus 1 is conveyed to the rough washing unit 3.

  In the rough cleaning section 3, the rough cleaning water w <b> 1 pumped from the rough cleaning water storage tank 32 by the pressure pump 33 and sent to the rough cleaning nozzle 31 is discharged from the rough cleaning nozzle 31 and sprayed on the tableware P. Thereby, the deposit | attachment adhering to the tableware P is washed away.

  Next, the tableware P roughly cleaned by the rough cleaning unit 3 is conveyed to the detergent cleaning unit 4. In the detergent cleaning unit 4, the detergent cleaning water w <b> 2 whose temperature has been adjusted in the detergent cleaning water storage tank 42 (for example, temperature adjusted to 70 ° C.) is pumped to the detergent cleaning nozzle 41 by the pumping pump 43. The sent detergent cleaning water w2 is discharged from the detergent cleaning nozzle 41 and sprayed onto the tableware P, and the oil and the like adhering to the tableware P is washed away.

  Next, the tableware P cleaned by the detergent cleaning unit 4 is conveyed to the rinse cleaning unit 5. In the rinsing unit 5, the rinsing water w <b> 3 whose temperature has been adjusted in the rinsing water storage tank 52 (e.g., temperature adjusted to 80 ° C.) is pumped to the rinsing nozzle 51 by the pumping pump 53. The sent rinse water w3 is discharged from the rinse nozzle 51 and sprayed onto the tableware P, and the detergent attached to the tableware P is washed away.

  Next, the tableware P rinsed and washed by the rinse washing unit 5 is conveyed below the blower 9, the compressed air A of the blower 9 is blown onto the tableware P, and the rinsing washing water w 3 adhering to the tableware P is drained. Done. Finally, the tableware P is conveyed to the finishing cleaning unit 6 and the rinse cleaning water w3 slightly adhered to the tableware P is washed away with clean water (finishing cleaning water) w4 from the finishing cleaning nozzle 61.

6-3. About the flow of washing water Here, the rough washing water w1 of the rough washing unit 3 adheres to the tableware P and is taken out by overflow, and the detergent washing water w2 of the detergent washing unit 4 adheres to the tableware P. Therefore, the amount of the rough cleaning water w1 in the rough cleaning water storage tank 32 and the amount of the detergent cleaning water w2 in the detergent cleaning water storage tank 42 are reduced. The amount to be reduced from taking out varies depending on the amount of tableware P being conveyed, the shape of the tableware P, the size of the tableware P, and the like.

  Therefore, in the present embodiment, the rinse cleaning water w3 pumped to the rinse cleaning nozzle 51 is split from the pumping pump 53, and the rinse cleaning water w3 that has been split is stored in the rough cleaning water from the water supply port 36 via the water supply pipe 54A. Supply to tank 32. Similarly, the rinsing cleaning water w3 pressure-fed to the rinsing cleaning nozzle 51 is divided from the pumping pump 53, and the divided rinsing cleaning water w3 is supplied from the water supply port 46 to the detergent cleaning water storage tank 42 via the water supply pipe 54B. To do. Thereby, the rinse water w3 can be quickly supplied to each of the rough cleaning water storage tank 32 and the detergent cleaning water storage tank 42 when necessary, without adding a new pump.

  Further, in the present embodiment, adjustment valves 55A and 55B for adjusting the supply amount of the rinse water w3 are attached to the water supply pipes 54A and 54B, and the opening degrees of the adjustment valves 55A and 55B are controlled by the control unit 8. It is controlled by the control signal.

  Specifically, the opening degree of the adjustment valve 55A for adjusting the supply amount of the rinse water w3 to the rough cleaning water storage tank 32 is determined based on the amount of water in the rough cleaning water storage tank 32 detected by the water amount detection sensor 37 and the water amount. Adjustment is made based on the amount of water in the rinse water storage tank 52 detected by the sensor 57. More specifically, when the amount of water in the rough washing water storage tank 32 detected by the water amount detection sensor 37 is equal to or less than the reference value, the control unit 8 increases the opening of the adjustment valve 55A (may be fully opened in some cases). The control valve 55A is controlled. On the other hand, when the amount of water in the rinse water storage tank 52 detected by the water amount detection sensor 57 is equal to or less than the reference value or the rate of decrease in the amount of water is equal to or greater than the reference speed, the control unit 8 opens the adjustment valve 55A. The control valve 55A is controlled so that the degree is small (in some cases, the valve is closed). In this way, the amount of the rough cleaning water w1 in the rough cleaning water storage tank 32 and the amount of the rinse cleaning water w3 in the rinse cleaning water storage tank 52 can be adjusted.

  Further, when the amount of water in the rinse water storage tank 52 detected by the water amount detection sensor 57 exceeds the reference value, the control unit 8 increases the opening of the adjustment valve 55A (in some cases, fully opens). The adjustment valve 55A is controlled. Thus, the rinse water w3 is positively sent to the rough cleaning water storage tank 32, and the rinse water w3 is discharged from the overflow drain port 32b of the rough cleaning water storage tank 32.

  On the other hand, the opening of the adjustment valve 55B that adjusts the supply amount of the rinse water w3 to the detergent cleaning water storage tank 42 is detected by the water amount of the detergent cleaning water storage tank 42 detected by the water amount detection sensor 47 and the water amount detection sensor 57. Adjustment is made based on the amount of water in the rinse water storage tank 52 and, if necessary, the detergent concentration measured by the concentration sensor. More specifically, when the amount of water in the detergent cleaning water storage tank 42 detected by the water amount detection sensor 47 is equal to or lower than the reference value, or when the detergent concentration measured by the concentration sensor is higher than the reference value, the control unit 8 The adjustment valve 55B is controlled so that the opening degree of the adjustment valve 55B is increased (in some cases, it is fully opened). On the other hand, when the amount of water in the rinse water storage tank 52 detected by the water amount detection sensor 57 is equal to or lower than the reference value, or the rate of decrease in the amount of water is equal to or higher than the reference speed, the control unit 8 opens the adjustment valve 55B. The adjustment valve 55B is controlled so that the degree is small (in some cases, the valve is closed). In this way, it is possible to adjust the amount of detergent cleaning water w2 in the detergent cleaning water storage tank 42 and the detergent concentration thereof, and the amount of rinse cleaning water w3 in the rinse cleaning water storage tank 52.

  Further, by providing the regulating valves 55A and 55B and controlling the opening degree by the control unit 8, it is possible to keep the balance of the water amount while securing the water amount of each storage tank automatically. Further, in the rough cleaning water storage tank 32 and the detergent cleaning water storage tank 42, the cleaning water due to the overflow of the cleaning water from the adjacent storage tank is managed by managing the amount of water in the adjacent storage tank on the downstream side. It is not replenished. Therefore, the cleaning water supplied from the outside to the dishwashing apparatus 1 is only the clean water w4 that is the finishing cleaning water, and other cleaning water (for example, the rinse cleaning water w3) is circulated in the dishwashing apparatus 1. And since it is used for washing | cleaning again, use of the water w4 from the outside as the tableware washing apparatus 1 whole can be suppressed.

  Further, each of the water supply pipes 54A and 54B for supplying the rinse cleaning water w3 to the rough cleaning water storage tank 32 and the detergent cleaning water storage tank 42 is connected to the water supply pipe 54 for pumping the rinse cleaning water w3 to the rinse cleaning nozzle 51. Therefore, the desired amount can be immediately supplied to the storage tank that requires the rinse water w3 simply by opening the regulating valves 55A and 55B.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed.

  For example, in this embodiment, a rough cleaning unit and a detergent cleaning unit are provided as the first cleaning unit of the present invention. However, if the cleaning unit includes a cleaning nozzle, a storage tank, and a pumping unit, a cleaning unit is further provided. Alternatively, either the rough cleaning section or the detergent cleaning section may be omitted. In this case, in accordance with the number of cleaning units in the first cleaning unit, the rinsing cleaning nozzle of the second cleaning unit is diverted from the water supply pipe that pumps the rinsing cleaning water, and each of the cleaning units of the first cleaning unit is respectively separated. It goes without saying that a water pipe is connected to each cleaning section so as to be supplied to the storage tank.

  Further, in this embodiment, as the second cleaning unit of the present invention, a rinsing cleaning unit and a finishing cleaning unit are provided, and the finishing cleaning water of the finishing cleaning unit is collected in the rinsing cleaning water storage tank. A finishing washing water storage tank is provided, and the collected finishing washing water is pumped to the finishing washing nozzle by the pumping unit, and a part of it is diverted, and the finishing washing water is washed by the rough washing unit, detergent washing unit, or rinse washing. You may supply to the storage tank of a part.

1: dishwashing device, 2: conveyor (conveyance unit), 3: rough cleaning unit (first cleaning unit), 4: detergent cleaning unit (first cleaning unit), 5: rinse cleaning unit (second cleaning unit), 6: finish cleaning unit (second cleaning unit), 8: control unit, 9: blower, 21: chain belt, 22: driven roller, 23: driving roller, 24: driving belt, 25: driving motor, 31: rough cleaning Nozzle, 32: Rough cleaning water storage tank, 32a: Drainage port, 32b: Overflow drainage port, 33: Pressure feed pump, 34: Water supply pipe, 36: Water supply port, 37: Water amount detection sensor, 41: Detergent washing nozzle, 42 : Detergent cleaning water storage tank, 42a: Drainage port, 43: Pressure feed pump, 44: Water supply pipe, 46: Water supply port, 47: Water amount detection sensor, 48: Heater, 51: Rinsing cleaning nozzle, 52: Suki cleaning water storage tank 52a: Drain port, 53: Pressure feed , 54, 54A, 54B: water supply pipe, 55A, 55B: regulating valve, 56: water supply port, 57: water amount detection sensor, 58: heater, 61: finish washing nozzle, 71, 73: water pipe, 72: heat exchange 74: Flow control valve, 75: On-off valve, 76, 77: Water return inclined plate, 79: Drain pipe, 81, 82: Signal line, A: Compressed air, w1: Rough cleaning water, w2: Detergent cleaning water , W3: rinse washing water, w4: clean water (finish washing water), P: tableware.

Claims (6)

A dishwasher for washing dishes,
A transport unit having a chain belt for transporting tableware along the transport direction from the entrance to the exit of the tableware washing apparatus,
A first cleaning unit that cleans the tableware transported by the transporting unit; and a second cleaning unit that cleans the tableware cleaned by the first cleaning unit and transported by the transporting unit;
Each of the first cleaning unit and the second cleaning unit collects cleaning water that sprays cleaning water on the tableware transported by the transport unit, and recovers the cleaning water discharged from the cleaning nozzle, and stores the recovered cleaning water A storage tank, and a pumping unit that pumps the cleaning water stored in the storage tank to the cleaning nozzle,
The first cleaning unit includes a plurality of cleaning units, and each cleaning unit includes the cleaning nozzle, the storage tank, and the pumping unit.
The portion of the chain belt located in the first cleaning unit is such that, in each cleaning unit, the central position of the chain belt in the center in the transport direction of the region where the cleaning water of the cleaning nozzle is sprayed is greater than the central position. The dishwashing characterized in that the chain belt portions before and after the transport direction from the central position are inclined with respect to the horizontal direction so that the position is lower than the position before and after the transport direction. apparatus.   In each of the cleaning portions, below the inclined portion of the chain belt, the cleaning belt is inclined downward toward the central position of the chain belt so that cleaning water flows into the storage tank of the cleaning portion. The dish washing apparatus according to claim 1, wherein an inclined plate is disposed.   The pumping unit of the second cleaning unit divides the cleaning water pumped to the cleaning nozzle of the second cleaning unit, and the split cleaning water is supplied to the storage tank of the first cleaning unit. The dish washing apparatus according to claim 1 or 2, wherein the dish washing apparatus is connected to each of the washing parts of the first washing part.   The tableware washing apparatus according to claim 3, wherein the pumping unit of the second cleaning unit includes an adjustment valve that adjusts a supply amount of the cleaning water supplied to each storage tank of the first cleaning unit. Each of the storage tank of the first cleaning unit and the storage tank of the second cleaning unit is provided with a water amount detection sensor that detects the amount of cleaning water in the storage tank.
The tableware washing apparatus includes a control unit that controls an opening degree of the adjustment valve based on a water amount detected by the water amount detection sensor of the first cleaning unit and the water amount detection sensor of the second cleaning unit. The tableware washing apparatus according to claim 4, wherein The cleaning nozzle of the second cleaning section includes a rinsing cleaning nozzle that sprays rinsing cleaning water, and a finishing cleaning nozzle that sprays clean water as finishing cleaning water onto the tableware sprayed with the rinsing cleaning water and transported by the transport section. Have
The storage tank of the second cleaning unit recovers the rinse water discharged from the rinse cleaning nozzle and the finish cleaning water discharged from the finish cleaning nozzle, and stores the recovered cleaning water as rinse cleaning water. Have a tank,
The pumping unit of the second cleaning unit has a rinse water pumping unit that pumps the rinse water stored in the rinse water storage tank to the rinse nozzle,
The rinsing cleaning water pumping unit divides the rinsing cleaning water pumped to the rinsing cleaning nozzle, and the split rinsing cleaning water is supplied to the storage tank of the first cleaning unit so as to be supplied to the first cleaning unit. It is connected, The dishwashing apparatus as described in any one of Claims 3-5 characterized by the above-mentioned.

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