JP2022103926A - Washing system - Google Patents

Abstract

To provide a washing system that can remove leftovers adhering to a washed material in a preliminary washing machine more effectively.SOLUTION: A washing system includes: a preliminary washing machine having a first washing nozzle 12B for injecting water to a first washing chamber, and a first washing water tank for reserving water to be supplied to the first washing nozzle and collecting the water injected by the first washing nozzle 12B; and a main washing machine having a second washing nozzle 112B for injecting the water to a second washing chamber, and a second washing water tank for reserving the water to be supplied to the second washing nozzle 112B and collecting the water injected by the second washing nozzle. The preliminary washing machine further has a leftover collecting filter arranged downward with respect to the position where the washed material is received, and collecting the leftover falling along with the water injected from the first washing nozzle 12B and adhering to the washed material. The injection pressure of the first washing nozzle 12B is larger than the injection pressure of the second washing nozzle 112B.SELECTED DRAWING: Figure 5

Description

The present invention relates to a cleaning system.

Dishwashing using a washing machine is generally performed. Since leftovers often adhere to the items to be washed such as tableware before washing, the items to be washed are immersed in a dipping tank in which water is stored before the items to be washed are stored in the washing machine. Preliminary cleaning is performed through human hands to preliminarily remove leftovers and the like adhering to the object to be cleaned. However, due to the recent demand for labor saving, there is a demand for a washing machine that does not require such preliminary cleaning.

Special Table 2012-51 1995 Gazette

A cleaning system that meets such a demand is disclosed in, for example, Patent Document 1. Patent Document 1 discloses a washing system including a preliminary washing machine (preliminary rinsing machine 50) in addition to the washing machine (dishwasher 250). In such a cleaning system, it is required to more effectively remove leftovers and the like adhering to the object to be cleaned in the preliminary cleaning machine.

Therefore, an object of the present invention is to provide a cleaning system capable of more effectively removing leftovers and the like adhering to an object to be cleaned in a preliminary washing machine.

In the cleaning system according to the present invention, a first cleaning nozzle that injects water into a first cleaning chamber that houses an object to be cleaned, a first cleaning nozzle that stores water to be supplied to the first cleaning nozzle, and water that is ejected by the first cleaning nozzle. A preliminary washing machine having a first washing water tank for collecting water, a second washing nozzle for injecting water into a second washing chamber for accommodating an object to be washed, and a second washing nozzle for storing water to be supplied to the second washing nozzle. (Ii) It has a second washing water tank for collecting the water sprayed by the washing nozzle, and has a main washing machine for washing the object to be washed washed in the pre-washing machine. It also has a leftovers recovery filter that is located below the position where it is housed and that falls with the water ejected from the first washing nozzle and collects leftovers adhering to the object to be cleaned. The injection pressure of the first cleaning nozzle is larger than the injection pressure of the second cleaning nozzle.

In the cleaning system having this configuration, it is possible to carry out pre-cleaning in which the leftovers and the like are washed away from the object to be washed by the pre-washing machine, and to carry out the main washing of the object to be washed in which the leftovers and the like are removed by the main washing machine. In the pre-cleaning machine that performs the pre-cleaning in the pre-cleaning stage, the injection pressure of the first cleaning nozzle is larger than the injection pressure of the second cleaning nozzle. Excellent ability to peel off. Therefore, the pre-washing machine can more effectively remove the leftovers and the like adhering to the object to be washed.

In the cleaning system according to the present invention, the ratio of the injection pressure of the first cleaning nozzle to the injection pressure of the second cleaning nozzle may be 1.5 or more. The pre-washing machine having this configuration is superior to the main washing machine in the ability to remove leftovers adhering to the object to be cleaned from the object to be washed.

In the cleaning system according to the present invention, the opening area of the injection hole in the second cleaning nozzle may be smaller than the opening area of the injection hole in the first cleaning nozzle. In this configuration, the injection pressure of the first cleaning nozzle can be made larger than the injection pressure of the second cleaning nozzle, and the amount of water injected from one first cleaning nozzle per unit time can be reduced to one second cleaning. It can be less than the amount of water ejected from the nozzle per unit time.

In the cleaning system according to the present invention, a spray pattern forming portion that spreads in a V shape toward the downstream direction is provided on the downstream side of the injection hole in the first cleaning nozzle in the water injection direction. In this configuration, water is sprayed into a high range (wide angle) from the injection hole of the first cleaning nozzle, so that the object to be cleaned contained in the cleaning chamber can be evenly pre-cleaned.

In the cleaning system according to the present invention, the amount of circulating water per unit time during the cleaning operation in the preliminary cleaning machine may be smaller than the amount of circulating water per unit time during the cleaning operation in the present cleaning machine. Here, when the leftovers recovery filter is immersed in the stored water of the first washing water tank, the leftovers cling to the leftovers recovery filter due to the flow of the stored water due to the suction of the washing pump, and the water ejected from the first washing nozzle. However, it prevents the water from flowing into the first washing water tank (recovered in the first washing water tank) through the leftovers recovery filter. When such an event occurs, the amount of water stored in the first washing water tank decreases, and air biting may occur in the washing pump that supplies the water stored in the first washing water tank to the first washing nozzle. Since this air biting causes a failure of the washing pump, it is necessary to periodically remove the leftovers from the leftover collection filter, but increasing the frequency of this work lowers the operating rate of the washing machine and also reduces the operating rate of the washing machine. It will be a burden on the worker.

In this configuration, the amount of circulating water per unit time during the washing operation in the pre-washing machine is smaller than the amount of circulating water per unit time during the washing operation in the main washing machine. The storage amount can be made smaller than the storage amount of the second washing water tank in this washing machine. That is, the stored water level of the first washing water tank in the preliminary washing machine can be relatively lowered. This makes it possible to secure a distance between the leftovers recovery filter and the water surface of the stored water in the first washing water tank without structurally improving the preliminary washing machine. As a result, the frequency with which the leftovers recovery filter is immersed in the stored water of the first washing water tank is reduced, so that the frequency of work for removing leftovers from the leftovers recovery filter can be reduced, and as a result, the operating rate of the preliminary washing machine can be reduced. It can be increased and the burden on the operator can be reduced.

The first washing water tank of the preliminary washing machine of the washing system according to the present invention further has a discharge unit for discharging water exceeding a predetermined water level in the first washing water tank, and the leftovers recovery filter is a leftovers recovery filter. The bottom surface may be arranged so as to be located above a predetermined water level. With this configuration, it is possible to prevent the leftovers recovery filter from being immersed in the stored water of the first washing water tank.

According to the present invention, it is possible to more effectively remove leftovers and the like adhering to the object to be washed in the preliminary washing machine.

FIG. 1 is a perspective view of a cleaning system according to an embodiment. FIG. 2 is a perspective view of the preliminary washing machine and the main washing machine. FIG. 3 is a diagram showing a schematic configuration of a preliminary washing machine. FIG. 4 is a perspective view showing a schematic configuration of the preliminary washing machine. FIG. 5A is a perspective view of the cleaning nozzle of the preliminary cleaning machine. 5 (B) is an enlarged perspective view showing an injection portion in the cleaning nozzle of FIG. 5 (A). FIG. 5C is a perspective view of the washing nozzle of the washing machine. FIG. 6 is a cross-sectional view of the lower cleaning nozzle and the lower rinsing nozzle of the preliminary cleaning machine. FIG. 7 is a cross-sectional perspective view of the vicinity of the upper end of the second washing water discharge pipe including the second rinsing water discharge pipe of the preliminary washing machine. FIG. 8 is a diagram showing a schematic configuration of this washing machine. FIG. 9 is a perspective view showing a schematic configuration of the washing machine.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements are designated by the same reference numerals, and duplicate description will be omitted. The dimensional ratios in the drawings do not always match those described. In the following description, the directions (vertical direction, front-back direction, left-right direction) specified in FIGS. 2 to 4, 8 and 9 are used for explanation.

As shown in FIG. 1, the cleaning system 200 includes a pre-immersion tank 203, a first transport unit 204, a pre-cleaning machine 1, a main cleaning machine 101, and a second transport unit 205. The pre-immersion tank 203, the first transport unit 204, the pre-cleaning machine 1, the main cleaning machine 101, and the second transport unit 205 are arranged in an L shape when viewed in a plan view.

The pre-immersion tank 203 is a tank for storing water. In the pre-immersion tank 203, pre-cleaning (removal of deposits, etc.) of the tableware (object to be cleaned) D may be performed. The first transport unit 204 is arranged next to the pre-immersion tank 203. The first transport unit 204 carries the tableware rack R into the washing chamber (first washing chamber) 3 of the preliminary washing machine 1. The tableware rack R is a grid-like member in which tableware D such as plates and bowls are arranged. When the first transport unit 204 detects that the tableware rack R is placed on the base 204a of the first transport unit 204, the arm member 204b moves to move the tableware rack R into the cleaning chamber of the preliminary cleaning machine 1. Push to 3.

The preliminary washing machine 1 is a washing machine provided for washing away the leftovers and the like adhering to the surface of the tableware D prior to washing the tableware D in the main washing machine 101. That is, the pre-washing machine 1 is a washing machine that performs pre-washing of the tableware D, which has been performed manually in the pre-immersion tank 203.

As shown in FIG. 2, the preliminary washer 1 has a washer body 2 covered with a stainless steel panel. The washing machine main body 2 is divided into an upper portion 2A in which the washing chamber 3 is formed and a lower portion 2B in which the machine room 4 is formed. In the corner portion on the back side of the washing machine main body 2, a support column 6 extending in the vertical direction extending over the upper portion 2A and the lower side portion 2B is arranged, and a back panel 5 is arranged between the support columns 6 and 6. ..

A box-shaped door 7 for opening and closing the washing chamber 3 is provided in the upper portion 2A of the washing machine main body 2. The door 7 is guided up and down by a pair of stainless steel columns 6 and 6, and is moved up and down by a handle 8A extending in the horizontal direction in the front. The door 7 may be automatically opened and closed in conjunction with the transport of the first transport unit 204. Further, the door 7 may be automatically opened and closed in conjunction with the end of the washing operation of the tableware D.

The tips of a pair of left and right rotating arms 8B and 8B are fixed to both ends of the handle 8A, and the rotating arms 8B and 8B are diagonally arranged along the side surface 7A of the door 7. One end of the link portion 8C arranged along the side surface 7A of the door 7 is rotatably connected to the rotating arms 8B and 8B, and the other end of the link portion 8C is connected to the door 7 via the shaft pin 8D. It is connected, and the door 7 can move up and down with respect to the rotational movement of the handle 8A. Legs 9 are attached to the four corners of the bottom surface of the washing machine main body 2.

As shown in FIG. 3, a rack rail 11 is detachably arranged in the washing chamber 3, and tableware D such as plates and bowls after eating and drinking are arranged on the rack rail 11 in a grid pattern. Tableware rack R is placed. In the upper part of the cleaning chamber 3, an upper cleaning nozzle (first cleaning nozzle) 12A composed of three radially extending arms 42 and an upper rinsing nozzle 13A composed of two arms 76 are rotatably arranged. There is. Similarly, at the lower part of the cleaning chamber 3, a lower cleaning nozzle (first cleaning nozzle) 12B composed of three radially extending arms 42 and a lower rinsing nozzle 13B composed of two arms 76 rotate, respectively. It is arranged freely. The dishes D arranged in the tableware rack R are sprayed with washing water from above and below by the upper washing nozzle 12A and the lower washing nozzle 12B, and the washing water is sprayed from above and below by the upper rinsing nozzle 13A and the lower rinsing nozzle 13B.

A cleaning pump 23 is connected to the front surface of the cleaning water tank 15 via a cleaning water suction port. A cleaning water discharge pipe 21 is connected to the discharge port of the cleaning pump 23. The wash water discharge pipe 21 is branched into a first wash water discharge pipe 21A and a second wash water discharge pipe 21B, the first wash water discharge pipe 21A is connected to the upper wash nozzle 12A, and the second wash water discharge pipe is connected. 21B is connected to the lower cleaning nozzle 12B. In the washing water tank 15, a washing water heater 16 for heating the washing water is provided in order to improve the washing ability and the sterilizing ability.

A plate-shaped partition plate 18 is arranged in the upper opening of the washing water tank 15. The partition plate 18 is provided with two openings 18a, and a leftovers recovery filter 19 is provided below the openings 18a. In FIGS. 3 and 8, for convenience of explanation, the leftovers recovery filter 19 is not shown. The leftovers recovery filter 19 is formed in a basket shape, and its side surface and bottom surface are formed by a mesh member. The leftovers that have flowed into the leftovers recovery filter 19 are received by the mesh member, and the water that has flowed into the leftovers recovery filter 19 passes through the mesh member and flows into the washing water tank 15. That is, the water ejected from the upper cleaning nozzle 12A and the lower cleaning nozzle 12B is collected in the cleaning water tank 15.

A first drain pipe 33 is connected to the bottom surface 15a of the washing water tank 15. The bottom surface 15a is inclined toward the first drainage pipe 33. The first drainage pipe 33 is provided with a drainage valve 34. The drain valve 34 is a so-called ball valve type valve, and the first drain pipe 33 is rotated by driving a motor to rotate a ball, which is a valve body arranged in a water flow path in the first drain pipe 33. Stop or drain the flow of water. The drain valve 34 is controlled by the controller 35, and the water stored in the wash water tank 15 is discharged by opening the valve body of the drain valve 34. An end opening 17a of the second drainage pipe (drainage portion) 17 is connected to the side surface 15b of the wash water tank 15. The second drain pipe 17 functions as an overflow pipe for discharging water exceeding a predetermined water level H in the washing water tank 15. The leftovers recovery filter 19 is arranged so that the bottom surface 19a of the leftovers recovery filter 19 is located above the predetermined water level H1.

In the machine room 4, a rinsing water tank 25 to which rinsing water is supplied from the outside via a water supply pipe 25A is arranged. A rinsing pump 27 is connected to the rinsing water tank 25 via a rinsing water suction pipe 29. A rinsing water discharge pipe 31 is connected to the discharge port of the rinsing pump 27. The rinsing water discharge pipe 31 is branched into a first rinsing water discharge pipe 31A and a second rinsing water discharge pipe 31B, the first rinsing water discharge pipe 31A is connected to the upper rinsing nozzle 13A, and the second rinsing water discharge pipe 31A is connected. 31B is connected to the lower rinsing nozzle 13B.

The upper cleaning nozzle 12A and the lower cleaning nozzle 12B will be described in detail. Here, the lower cleaning nozzle 12B of the preliminary cleaning machine 1 will be described as an example. As shown in FIG. 6, the lower cleaning nozzle 12B is rotatably sandwiched around the rotation axis by the lower nozzle header 61 and the lower nozzle nut 62. The lower nozzle header 61 is provided so as to surround the outer peripheral surface of the upper end of the second washing water discharge pipe 21B and the second rinsing water discharge pipe 31B described above. The second washing water discharge pipe 21B includes the second rinsing water discharge pipe 31B, and has a double pipe configuration. That is, the water flow path S1 pressure-fed from the cleaning pump 23 in the second cleaning water discharge pipe 21B is formed in an annular shape.

As shown in FIGS. 5A and 6, the lower cleaning nozzle 12B consists of a holder 41 sandwiched between the lower nozzle header 61 and the lower nozzle nut 62, and three radially extending from the holder 41. With an arm 42 of. A circular penetrating portion 41A is formed in the holder 41. A lower nozzle nut 62 is attached to the upper opening of the penetrating portion in the lower cleaning nozzle 12B, and a lower nozzle header 61 is attached to the lower opening of the penetrating portion 41A. As a result, the flow path S1 (see FIG. 6) formed in an annular shape and the penetrating portion 41A of the holder 41 communicate with each other, and water is supplied to the inner space portion S2 described later.

As shown in FIG. 7, an annular orifice plate 71 is arranged at the downstream end of the second wash water discharge pipe 21B. The orifice plate 71 is arranged so that its outer edge is in contact with the inner peripheral surface of the second washing water discharge pipe 21B and its inner edge is separated from the outer peripheral surface of the second rinsing water discharge pipe 31B. The orifice plate 71 narrows the width (cross-sectional area) of the flow path S1 formed in the annular shape described above (throttle) to suppress the amount of water flowing from the second washing water discharge pipe 21B to the lower washing nozzle 12B. Although not shown, a similar orifice plate 71 is arranged in the water supply path from the first washing water discharge pipe 21A to the upper washing nozzle 12A, and the same orifice plate 71 is arranged from the first washing water discharge pipe 21A to the upper washing nozzle 12A. Suppress the amount of flowing water.

In the washing machine 101, which will be described in detail later, the water supply path from the second washing water discharge pipe 21B to the lower washing nozzle (second washing nozzle) 112B and the upper washing from the first washing water discharge pipe 21A. The orifice plate 71 is not provided in the water supply path to the nozzle (second cleaning nozzle) 112A. Therefore, in the washing machine 101, the amount of water flowing from the second washing water discharge pipe 21B to the lower washing nozzle 112B and the amount of water flowing from the first washing water discharge pipe 21A to the upper washing nozzle 112A are not suppressed.

As shown in FIGS. 3, 5 (A) and 5 (B), the arm 42 of the lower cleaning nozzle 12B extends in a substantially horizontal direction orthogonal to the rotation axis direction and is injected from the injection unit 43. The inner space S2, which is the flow path of the water to be made to flow, is formed. The arm 42 is formed with an injection portion 43 into which water is injected. As shown in FIG. 3, the arm 42 of the upper cleaning nozzle 12A also has the same configuration as the lower cleaning nozzle 12B. In the cleaning system 200 of the present embodiment, the number of injection portions 43 of the lower cleaning nozzle 12B provided in the preliminary cleaning machine 1 is the same as the number of injection portions 143 provided in the lower cleaning nozzle 112B of the cleaning machine 101. It's different.

Specifically, while the number of injection portions 43 (see FIG. 5A) formed on the arm 42 of the lower cleaning nozzle 12B of the preliminary cleaning machine 1 is three, the number of the cleaning machine 101 is three. The number of injection portions 143 (see FIG. 5C) formed on the arm 42 of the lower cleaning nozzle 112B is four. Similarly, although not shown, the number of injection portions 43 formed on the arm 42 of the upper cleaning nozzle 12A of the preliminary cleaning machine 1 is three, whereas the arm of the upper cleaning nozzle 112A of the main cleaning machine 101 The number of injection portions 143 formed in 42 is four.

As shown in FIGS. 5 (A) and 5 (B), the injection unit 43 in which the pre-cleaning machine 1 is formed has an injection hole 44 into which water is injected and a spray of water injected from the injection hole 44. A spray pattern forming portion 45 for forming a pattern is provided. The spray pattern forming portion 45 is provided on the downstream side of the injection hole 44, and has a shape that spreads in a V shape toward the downstream direction. The spray pattern forming portion 45 is a portion for injecting water into a high range (wide angle) from the injection hole 44. Similarly, although not shown, the injection unit 43 formed on the arm 42 of the upper cleaning nozzle 12A has the same configuration as the injection unit 43 of the lower cleaning nozzle 12B. The lower cleaning nozzle 12B and the upper cleaning nozzle 12A of the preliminary cleaning machine 1 in which the spray pattern forming portion 45 is formed are formed on the arm 142 of the lower cleaning nozzle 112B and the upper cleaning nozzle 112A of the cleaning machine 101. Is formed with an injection hole 144 on the surface of the convex portion 145. That is, the lower cleaning nozzle 112B and the upper cleaning nozzle 112A are not provided with a spray pattern forming portion that spreads in a V shape toward the downstream side on the downstream side of the injection hole 144.

The injection holes 144 formed in the arm 142 of the washing machine 101 are formed in a long hole shape. As shown in FIG. 5C, there may be an injection portion 143 (convex portion 145) provided with not only one but also two injection holes 144. In the lower cleaning nozzle 112B and the upper cleaning nozzle 112A of the cleaning machine 101, the spray pattern forming portion 45 as described above provided in the lower cleaning nozzle 12B and the upper cleaning nozzle 12A of the preliminary cleaning machine 1 is sprayed instead of the configuration. By making the opening shape of the hole 144 a long hole, the injection range of the water injected from the injection hole 144 is widened. Due to the difference between the configuration of the lower cleaning nozzle 12B and the upper cleaning nozzle 12A of the preliminary cleaning machine 1 and the configuration of the lower cleaning nozzle 112B and the upper cleaning nozzle 112A of the main cleaning machine 101, the preliminary cleaning machine 1 has In the washing machine 101, a large amount of water directly struck from the injection hole 144 is applied to the tableware D, whereas water having a strong water pressure diffused over a wide range from the injection hole 44 is applied to the tableware D.

As described above, the opening area of the injection hole 44 formed in the arm 42 of the preliminary cleaning machine 1 is formed to be smaller than the opening area of the injection hole 144 formed in the arm 142 of the main cleaning machine 101. The injection pressure of the water injected from the injection hole 44 is higher than the injection pressure of the water injected from the injection hole 144. The ratio of the injection pressure of the lower cleaning nozzle 12B of the preliminary cleaning machine 1 to the injection pressure of the lower cleaning nozzle 112B of the cleaning machine 101 is 1.5 or more, and the preliminary cleaning machine 1 has the injection pressure of the upper cleaning nozzle 112A. The ratio of the injection pressure of the upper cleaning nozzle 12A is also 1.5 or more.

In the preliminary washing machine 1, the lower washing nozzle 12B is arranged at a position closer to the tableware D housed in the washing chamber 3 than the upper washing nozzle 12A. Therefore, it is preferable to increase the momentum of water by increasing the injection pressure in the lower cleaning nozzle 12B in the preliminary cleaning machine 1 to enhance the ability to remove leftovers from the tableware D. On the other hand, since the upper cleaning nozzle 12A (112A) is arranged at a position farther from the tableware D housed in the cleaning chamber 3 than the lower cleaning nozzle 12B (112B), it is assumed that the injection pressure of the upper cleaning nozzle 12A is increased. However, the momentum of the water weakens by the time the water reaches the tableware D. Therefore, if the injection pressure in the upper cleaning nozzle 12A is adjusted so that the force of the water is such that the tableware D is pressed from above so that the tableware D is not lifted by the water ejected from the lower cleaning nozzle 12B. good.

Further, in the preliminary washing machine 1, water is pressure-fed from one washing pump 23 to the upper washing nozzle 12A and the lower washing nozzle 12B. Since the water supply capacity of the cleaning pump 23 is fixed, it is preferable to appropriately distribute the water supply to the upper cleaning nozzle 12A and the water supply to the lower cleaning nozzle 12B. Taking these things into consideration comprehensively, the ratio of the injection pressure of the lower cleaning nozzle 12B of the preliminary cleaning machine 1 to the injection pressure of the lower cleaning nozzle 112B of the cleaning machine 101 is set to 3.0 or more and 4.0 or less. The ratio of the injection pressure of the upper cleaning nozzle 12A of the preliminary cleaning machine 1 to the injection pressure of the upper cleaning nozzle 112A of the cleaning machine 101 is preferably 1.5 or more and 2.0 or less.

In the cleaning operation in the preliminary cleaning machine 1 and the main cleaning machine 101, the water stored in the cleaning water tank 15 is supplied to the upper cleaning nozzle 12A and the lower cleaning nozzle 12B by the cleaning pump 23. Then, the water sprayed from the upper cleaning nozzle 12A and the lower cleaning nozzle 12B into the cleaning chamber 3 flows into the leftovers recovery filter 19 from the opening 18a of the partition plate 18 and passes through the mesh member of the leftovers recovery filter 19. Then, it flows into the washing water tank 15. The water that has flowed into the washing water tank 15 is supplied to the upper washing nozzle 12A and the lower washing nozzle 12B by the washing pump 23, and is again injected into the washing chamber 3. As described above, in the washing operation in the preliminary washing machine 1 and the main washing machine 101, water is circulated and supplied to the washing water tank 15. The amount of circulating water per unit time during the washing operation in the preliminary washing machine 1 is smaller than the amount of circulating water per unit time during the washing operation in the main washing machine 101.

The difference between the amount of circulating water in the preliminary washing machine 1 and the amount of circulating water in the main washing machine 101 in the present embodiment is, for example, the characteristics of the flow path (pipe diameter, material of the pipeline, etc.) forming the circulation path between the two, and cleaning. When the capacities of the pump 23 and the like are the same, the difference in the above configuration, that is, the presence or absence of the orifice plate 71 at the downstream end of the second wash water discharge pipe 21B, and the injection hole 44 (injection) formed in the arm 42. It depends on the total number of holes 144) and the opening area of the injection holes 44 (injection holes 144) (that is, the total opening area per nozzle). In the present embodiment, due to the difference in the configuration as described above, the amount of circulating water per unit time during the cleaning operation in the preliminary cleaning machine 1 is 1/3 of the amount of circulating water per unit time during the cleaning operation in the main cleaning machine 101. It is ~ 1/2.

As shown in FIG. 6, the lower rinsing nozzle 13B has an internal insertion tube 74 that is penetrated through a through hole of the lower nozzle nut 62 and inserted into the lower nozzle header 61, and a holder connected to the internal insertion tube 74. It has a 75 and two arms 76 extending in a direction orthogonal to the axial direction from the holder 75. The lower rinsing nozzle 13B is rotatably sandwiched by the lower nozzle nut 62 and the screw cap 63. The rinsing water is supplied to the arm 76 through the first rinsing water discharge pipe 31A, the intubation pipe 74 and the holder 75, and is injected from the injection portion 77 of the arm 76. The injection unit 77 has an injection hole 78 and a spray pattern forming unit 79 having the same configuration as the lower cleaning nozzle 12B shown in FIG. 5 (A).

In the machine room 4, an electrical box (not shown) or the like containing a controller 35 that controls the overall operation of the preliminary washing machine 1 is housed.

Next, the washing machine 101 will be described. The washing machine 101 cleans the pre-washed tableware D in the pre-washing machine 1. The washing machine 101 is consistent with the configuration of the preliminary washing machine 1 except for the above-mentioned points (presence / absence of the orifice plate 71 and the configuration of the injection unit 143). That is, in FIGS. 8 and 9, the components of the present washing machine 101 represented by the same reference numerals as the constituent articles constituting the preliminary washing machine 1 have the same functions as the constituent articles constituting the preliminary washing machine 1. The cleaning chamber (second cleaning chamber) 103 and the cleaning water tank (second cleaning water tank) 115 have the same functions as the cleaning chamber 3 and the cleaning water tank 15 of the preliminary cleaning machine 1, although they have different reference numerals.

Subsequently, the operation of the cleaning system 200 will be described. When the power switch of the pre-washing machine 1 is turned on, the hot water in the rinsing water tank 25 of the pre-washing machine 1 is sprayed to the washing chamber 3 by the rinsing pump 27 via the upper rinsing nozzle 13A and the lower rinsing nozzle 13B. Hot water is supplied into the washing water tank 15. When the power switch of the washing machine 101 is turned on, the hot water in the rinsing water tank 25 of the washing machine 101 is sprayed to the washing chamber 3 by the rinsing pump 27 via the upper rinsing nozzle 113A and the lower rinsing nozzle 113B. Hot water is supplied into the washing water tank 15. The temperature of the hot water in the rinsing water tank 25 of the preliminary washing machine 1 and the main washing machine 101 is set to, for example, around 80 ° C. As a result, the initial hot water supply is performed in the main washing machine 101 and the preliminary washing machine 1. Then, an amount of detergent corresponding to the initial hot water supply amount is supplied into the washing water tank 15, and the detergent concentration of the washing water in the washing water tank 15 becomes a predetermined concentration.

In addition, instead of the configuration in which water is supplied to the washing chamber 3 via the upper rinsing nozzle 13A (or the upper rinsing nozzle 113A) and the lower rinsing nozzle 13B (or the lower rinsing nozzle 113B), a dedicated hot water supply pipe is provided. It may be configured to supply.

After the initial hot water supply, when the user places the tableware rack R on the base 204a of the first transport unit 204, the first transport unit 204 detects that the tableware rack R is placed on the base 204a, and the arm member. Extruding the tableware rack R to the preliminary washing machine 1 by 204b is started. When the tableware rack R is carried into the washing room 3 of the preliminary washing machine 1 and it is detected that the door 7 is closed, an operation start signal is input to the controller 35. When the operation start signal is input to the controller 35, the washing operation (washing step and rinsing step) of the tableware D in the preliminary washing machine 1 is started. The washing step of the tableware D is performed by injecting the washing water in the washing water tank 15 toward the tableware D in the washing room 3. The temperature of the washing water in the washing water tank 15 is set to be, for example, 60 ° C to 70 ° C.

When the cleaning pump 23 is started, the cleaning water stored in the cleaning water tank 15 is pressure-fed to the upper cleaning nozzle 12A and the lower cleaning nozzle 12B via the cleaning water discharge pipe 24 and the like, and the upper cleaning nozzle 12A And from the lower cleaning nozzle 12B toward the tableware in the cleaning chamber 3. The washing water sprayed from the upper washing nozzle 12A and the lower washing nozzle 12B into the washing chamber 3 peels off leftovers and dirt (hereinafter, also referred to as "leftovers") from the tableware, and opens together with the washing water. It flows into 18a and is collected by a basket-shaped leftover collection filter 19. The washing water collected in the washing water tank 15 is circulated and supplied to the washing chamber 3 again by the washing pump 23. When the dishes are washed with the washing water for a predetermined time, the operation of the washing pump 23 is stopped. As a result, the operation of the preliminary washing machine 1 is temporarily suspended.

Next, the rinsing process of tableware D is started. The rinsing step of the tableware D is performed by spraying the rinsing water in the rinsing water tank 25 toward the tableware D in the washing chamber 3. The rinsing water stored in the rinsing water tank 25 is pressure-fed to the upper rinsing nozzle 13A and the lower rinsing nozzle 13B via the rinsing water discharge pipe 31 and the like when the rinsing pump 27 in the preliminary washing machine 1 is started. , Is ejected from the upper rinsing nozzle 13A and the lower rinsing nozzle 13B toward the tableware. The temperature of the rinsing water pumped from the rinsing water tank 25 is set to, for example, around 80 ° C.

In the rinsing step, the rinsing water collected in the washing water tank 15 is mixed with the washing water and used as the washing water in the next washing step. In the drain valve 34, the opening time of the valve body (ball) is adjusted so that a part of the water newly supplied in the rinsing step is discharged through the first drain pipe 33, and the remaining water is discharged from the opening 17a. (Ii) It is discharged through the drain pipe 17. When the predetermined rinsing time has elapsed, the rinsing step is completed, and a series of washing operations in the preliminary washing machine 1 is completed.

When the washing operation in the pre-washing machine 1 is completed, the door 7 in the pre-washing machine 1 is opened, and the first transport unit 204 pushes the next tableware rack R into the washing chamber 3 of the pre-washing machine 1 to wash the tableware in a ballistic manner. Extrude the completed tableware rack R into the main washing machine 101. As a result, the tableware rack R washed in the preliminary washing machine 1 is carried into the washing room 3 of the main washing machine 101. When the tableware rack R is carried into the washing room 3 of the washing machine 101, the door 7 of the washing machine 101 is closed. When the door 7 of the washing machine 101 is closed, an operation start signal is input to the controller 35. When the operation start signal is input to the controller 35, the washing operation of the tableware D in the washing machine 101 is started. The washing of the tableware D is performed by spraying the washing water in the washing water tank 15 toward the tableware in the washing room 3. The temperature of the washing water in the washing water tank 15 is set to be, for example, 60 ° C to 70 ° C.

When the cleaning pump 23 is started, the cleaning water stored in the cleaning water tank 15 is pressure-fed to the upper cleaning nozzle 112A and the lower cleaning nozzle 112B via the cleaning water discharge pipe 24 and the like, and the upper cleaning nozzle 112A. And is sprayed from the lower washing nozzle 112B toward the tableware in the washing chamber 3.

The washing water sprayed into the washing chamber 3 is collected in the washing water tank 15. The tableware D to be washed in the main washing machine 101 is in a state in which leftovers and the like are almost removed in the preliminary washing machine 1. Therefore, the washing water collected in the washing water tank 15 is water in a relatively clean state. The washing water collected in the washing water tank 15 is circulated and supplied to the washing chamber 3 again by the washing pump 23. When the dishes are washed with the washing water for a predetermined time, the operation of the washing pump 23 is stopped. As a result, the operation of the washing machine 101 is temporarily suspended.

Next, when the rinsing pump 27 is started, the rinsing water stored in the rinsing water tank 25 is pressure-fed to the upper rinsing nozzle 13A and the lower rinsing nozzle 13B via the rinsing water discharge pipe 31 and the like, and is sent to the upper side. It is sprayed from the rinsing nozzle 13A and the lower rinsing nozzle 13B toward the tableware. The temperature of the rinsing water pumped from the rinsing water tank 25 is set to, for example, around 80 ° C.

In the rinsing step, similarly to the preliminary washing machine 1, the rinsing water collected in the washing water tank 15 is mixed with the washing water and used as the washing water in the next washing step. In the drain valve 34, the opening time of the valve body (ball) is adjusted so that a part of the water newly supplied in the rinsing step is discharged through the first drain pipe 33, and the remaining water is discharged from the opening 17a. (Ii) It is discharged through the drain pipe 17. When the predetermined rinsing time has elapsed, the rinsing step is completed, and a series of washing operations in the washing machine 101 are completed.

The predetermined time described above is appropriately set based on the storage capacity of the washing water tank 15 and the rinsing water tank 25, the water supply capacity of the washing pump 23 and the rinsing pump 27, and the like.

Subsequently, the operation and effect of the cleaning system 200 of the present embodiment will be described. In the cleaning system 200 of the above embodiment, the preliminary cleaning machine 1 is used to wash away the leftovers and the like from the tableware D, and the main washing machine 101 is used to perform the main washing of the tableware D from which the leftovers and the like are removed. can. Since the injection pressure of the upper cleaning nozzle 12A and the lower cleaning nozzle 12B of the preliminary cleaning machine 1 is larger than the injection pressure of the upper cleaning nozzle 112A and the lower cleaning nozzle 112B of the main cleaning machine 101, the leftovers adhering to the tableware D. Has excellent ability to be peeled off from tableware D. Therefore, the pre-washing machine 1 can more effectively remove the leftovers and the like adhering to the tableware D.

In the cleaning system 200 of the present embodiment, the ratio of the injection pressure of the upper cleaning nozzle 12A and the lower cleaning nozzle 12B of the preliminary cleaning machine 1 to the injection pressure of the upper cleaning nozzle 112A and the lower cleaning nozzle 112B of the cleaning machine 101 is determined. It is 1.5 or more. Therefore, as compared with the main washing machine 101, the preliminary washing machine 1 is excellent in the ability to remove the leftovers adhering to the tableware D from the tableware D.

In the cleaning system 200 of the present embodiment, the opening area of the injection hole 44 in the upper cleaning nozzle 12A and the lower cleaning nozzle 12B of the preliminary cleaning machine 1 is sprayed by the upper cleaning nozzle 112A and the lower cleaning nozzle 112B of the cleaning machine 101. Since it is smaller than the opening area of the hole 144, the injection pressure of the upper cleaning nozzle 12A and the lower cleaning nozzle 12B of the preliminary cleaning machine 1 is applied to the injection pressure of the upper cleaning nozzle 112A and the lower cleaning nozzle 112B of the cleaning machine 101. Can be greater than pressure. As a result, the amount of water injected from one injection hole 44 per unit time can be made smaller than the amount of water injected from one injection hole 144 per unit time.

In the preliminary cleaning machine 1 of the cleaning system 200 of the present embodiment, as shown in FIG. 5B, a spray pattern that spreads in a V shape toward the downstream side of the injection hole 44 in the water injection direction. Since the forming portion 45 is provided, water is sprayed from the jet hole 44 into a high range (wide angle), and the tableware D housed in the washing chamber 3 can be evenly pre-washed.

When the leftovers recovery filter 19 provided in the preliminary washing machine 1 is immersed in the stored water of the washing water tank 15, the leftovers cling to the mesh member of the leftovers recovery filter 19 due to the flow of the stored water by the suction of the washing pump 23, and the upper side. The water ejected from the washing nozzle 12A and the lower washing nozzle 12B prevents the water from flowing into the washing water tank 15 through the leftovers recovery filter 19 (recovering in the washing water tank 15). Since the pre-washing machine 1 specializes in the function of removing the leftovers adhering to the tableware D, there is a high possibility that such an event will occur. When such an event occurs, the amount of water stored in the washing water tank 15 decreases, and air is caught in the washing pump 23 that supplies the water stored in the washing water tank 15 to the upper washing nozzle 12A and the lower washing nozzle 12B. May occur. Since this air biting causes a failure of the washing pump 23, it is necessary to periodically remove the leftovers from the leftovers recovery filter 19, but the increased frequency of this work is the operating rate of the preliminary washing machine 1. It becomes a burden on the worker as well as reducing the problem.

In the cleaning system 200 of the present embodiment, the amount of circulating water per unit time during the cleaning operation in the preliminary cleaning machine 1 is smaller than the amount of circulating water per unit time during the cleaning operation in the main cleaning machine 101. The storage amount of the washing water tank 15 in the washing machine 1 can be made smaller than the storage amount of the washing water tank 15 in the washing machine 101. That is, the stored water level of the washing water tank 15 in the preliminary washing machine 1 can be relatively lowered. This makes it possible to secure a distance between the bottom surface 19a of the leftovers recovery filter 19 and the water surface of the stored water in the washing water tank 15 without structurally improving the preliminary washing machine 1. As a result, the frequency with which the leftovers recovery filter 19 is immersed in the stored water of the washing water tank 15 is reduced, so that the frequency of work for removing leftovers from the leftovers recovery filter 19 can be reduced, and as a result, the preliminary washing machine 1 is operated. The rate can be increased and the burden on the operator can be reduced.

As shown in FIG. 4, the washing water tank 15 of the preliminary washing machine 1 of the washing system 200 of the present embodiment is provided with a second drain pipe 17 for discharging water exceeding a predetermined water level in the washing water tank 15, and remains. Since the vegetable recovery filter 19 is arranged so that the bottom surface 19a of the residual vegetable recovery filter 19 is located above the predetermined water level H in H1, the residual vegetable recovery filter 19 is immersed in the stored water of the washing water tank 15. Can be prevented.

Assuming that the size of the leftovers recovery filter 19 in the height direction can be increased to the limit according to the predetermined water level (overflow water level) of the washing water tank 15, the water jetted from the upper washing nozzle 12A and the lower washing nozzle 12B can be increased. It becomes difficult to prevent the flow of the leftover food into the washing water tank 15 through the leftovers recovery filter 19. As a result, since it takes a long time for the cleaning pump 23 to generate air biting as described above, it is possible to reduce the work frequency of removing the leftovers from the leftovers recovery filter 19, and the work load on the operator is reduced. Further, since the leftovers recovery filter 19 is not immersed in the stored water of the washing water tank 15, contamination of the washing water due to the soaking of the leftovers can be suppressed. Further, it is possible to prevent dripping from the collected leftovers when the leftovers recovery filter 19 is taken out.

In the preliminary washing machine 1 of the washing system 200 of the present embodiment, the drain valve 34 forcibly discharges the washing water tank 15 via the washing water tank 15 connected to the bottom surface 15a of the washing water tank 15. As a result, dirt that tends to stay downward and small objects that settle are discharged from the washing water tank 15, so that contamination of the washing water can be suppressed.

Although the embodiments of the present invention have been described above, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the gist thereof.

In the main cleaning machine 101 of the cleaning system 200 of the above embodiment, similarly to the preliminary cleaning machine 1, the first drainage pipe 33 connected to the bottom surface 15a of the cleaning water tank 15 and the drainage provided in the first drainage pipe 33. Although the example in which the valve 34 and the second drainage pipe 17 connected to the side surface 15b of the washing water tank 15 are provided has been described, the present invention is not limited to this configuration. For example, instead of the configuration of the first drain pipe 33, the drain valve 34, and the second drain pipe 17, an over that is detachably provided at the drain port formed on the bottom surface 15a of the washing water tank 15 and extends vertically upward. -It may be configured to be provided with a flow pipe. Water exceeding the specified water level is discharged from the upper end of the overflow pipe, and all the water stored in the wash water tank 15 can be drained by passing through the overflow pipe from the drain port.

In the preliminary cleaning machine 1 and the main cleaning machine 101 of the cleaning system 200 of the above embodiment, an example of draining the water stored in the cleaning water tank 15 by the drain valve 34 has been described, but instead of the drain valve 34, The water stored in the wash water tank 15 may be drained by the drainage pump.

In the washing system 200 of the above embodiment and the modified example, the tableware rack R is moved to the preliminary washing machine 1 and the tableware rack R is moved from the preliminary washing machine 1 to the main washing machine 101 by the first transport unit 204. Although the example in which the tableware rack R is moved from the washing machine 101 by the second transport unit 205 has been described, each of the above movements may be performed by an operator.

The preliminary washing machine 1 and the main washing machine 101 of the above-described embodiment and the modified example have been described by taking as an example a washing machine of a type in which the door 7 is provided so as to be movable in the vertical direction. It can also be applied to a type of dishwasher or the like in which a door 7 is provided on the front side of the machine body 2.

In the above-described embodiment and modified example, a configuration in which the leftovers recovery filter 19 and the second drainage pipe 17 having the same configuration as that of the preliminary washing machine 1 are provided as an example has been described, but the present invention is not limited thereto. Since the leftovers of the tableware D to be washed in the washing machine 101 are removed in advance by the preliminary washing machine 1, air biting as described above is unlikely to occur. Therefore, the bottom surface 19a of the leftovers recovery filter 19 of the washing machine 101 may be configured to be immersed in the stored water of the washing water tank 115.

In the above-described embodiment and modification, the pre-washing machine 1 that performs pre-washing on the tableware D and the main washing machine 101 that carries out the main washing and is separate from the pre-washing machine 1 are arranged side by side. The system 200 has been described as an example, but the present invention is not limited thereto. For example, although there is only one housing, a preliminary cleaning chamber for performing preliminary cleaning and a main cleaning chamber for performing main cleaning are formed, and the tableware D is moved from the preliminary cleaning chamber to the main cleaning chamber by a conveyor or the like. The present invention may be applied to a washing machine of the type performed in 1. That is, a cleaning nozzle having a configuration as shown in FIG. 5A may be arranged in the preliminary cleaning chamber, and a cleaning nozzle having a configuration as shown in FIG. 5C may be arranged in the main cleaning chamber. Similarly, a washing water tank provided with a leftovers recovery filter 19 and a second drainage pipe 17 having the same configuration as that of the preliminary washing machine 1 may be arranged in the preliminary washing room.

The present invention may appropriately combine the contents described as the above-described embodiment, the above-mentioned modified examples, and other modified examples without departing from the spirit of the invention.

1 ... Preliminary cleaning machine, 3 ... Cleaning chamber, 12A ... Upper cleaning nozzle (first cleaning nozzle), 12B ... Lower cleaning nozzle (first cleaning nozzle), 15 ... Cleaning water tank, 15a ... Bottom surface, 17 ... Second Drain pipe (drain part), 19 ... leftover collection filter, 19a ... bottom surface, 23 ... cleaning pump, 33 ... first drain pipe, 35 ... controller, 42 ... arm, 43 ... injection part, 44 ... injection hole, 45 ... Spray pattern forming part, 71 ... orifice plate, 101 ... main washing machine, 112A ... upper washing nozzle (second washing nozzle), 112B ... lower washing nozzle (second washing nozzle), 143 ... injection part, 144 ... injection hole , 200 ... Cleaning system, R ... Tableware rack, H ... Predetermined water level.

Claims (6)

The first cleaning nozzle that injects water into the first cleaning chamber that houses the object to be cleaned, and the first cleaning that stores the water supplied to the first cleaning nozzle and collects the water ejected by the first cleaning nozzle. With a pre-washer with a water tank,
A second cleaning nozzle that injects water into the second cleaning chamber that houses the object to be cleaned, and a second cleaning that stores the water supplied to the second cleaning nozzle and collects the water ejected by the second cleaning nozzle. It has a water tank and is equipped with a main washing machine for washing the object to be washed washed in the preliminary washing machine.
The pre-washing machine is arranged below the position where the object to be cleaned is housed, and collects leftovers adhering to the object to be cleaned that fall together with the water ejected from the first cleaning nozzle. It also has a leftover collection filter,
A cleaning system in which the injection pressure of the first cleaning nozzle is higher than the injection pressure of the second cleaning nozzle. The cleaning system according to claim 1, wherein the ratio of the injection pressure of the first cleaning nozzle to the injection pressure of the second cleaning nozzle is 1.5 or more. The cleaning system according to claim 1 or 2, wherein the opening area of the injection hole in the second cleaning nozzle is smaller than the opening area of the injection hole in the first cleaning nozzle. Any one of claims 1 to 3, wherein a spray pattern forming portion that spreads in a V shape toward the downstream direction is provided on the downstream side of the injection hole in the second cleaning nozzle in the water injection direction. The cleaning system described in the section. The cleaning system according to any one of claims 1 to 4, wherein the amount of circulating water per unit time during the cleaning operation of the preliminary cleaning machine is smaller than the amount of circulating water per unit time during the cleaning operation of the main cleaning machine. .. The first washing water tank of the preliminary washing machine is
The first wash water tank further has a discharge unit for discharging water exceeding a predetermined water level.
The cleaning system according to any one of claims 1 to 5, wherein the leftovers recovery filter is arranged so that the bottom surface of the leftovers recovery filter is located above the predetermined water level.

Images