JP7307634B2 - washer system - Google Patents

Description

The present invention relates to washing machine systems.

Dishwashing using a washing machine is commonly performed. Uncleaned items such as tableware often have leftovers attached to them, so before storing the items in the washing machine, they should be soaked in an immersion tank filled with water. Preliminary cleaning is carried out by hand to preliminarily remove leftover food and the like adhering to the items 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 washing.

A washing machine system (alternative system 200) that meets such a request is disclosed in Patent Document 1, for example. In Patent Document 1, a prewashing machine (preliminary rinsing machine 50) is provided separately from a washing machine (dishwasher 250), and the prewashing machine cleans objects (tableware) with washing water supplied from the washing machine. A rinse and washer system is disclosed. In this washing machine system, the object to be washed can be pre-washed without human intervention.

JP 2015-231568 A

However, in the above conventional washing system, in order to supply water from the washing machine to the pre-washing machine, the washing water tank of the washing machine and the washing water tank of the pre-washing machine are connected via a check valve or a pump is used. The manufacturing cost is high because the connection is made via the .

Therefore, the present invention makes it possible to pre-wash an object to be washed without human intervention, and at the same time, provides a washing machine capable of inexpensively constructing a structure for supplying water from a washing machine to a pre-washing machine for pre-washing. The purpose is to provide a system.

A washing machine system according to the present invention includes a preliminary washing machine having a first washing water tank for storing water for washing an object to be washed, and a second washing water tank for storing water for washing the object to be washed, and a main washing machine for washing an object washed in the pre-washing machine, wherein the pre-washing machine and the main washing machine have a second specified water level which is the specified water level of the second cleaning water tank. is set to be higher than the first specified water level, which is the specified water level of the first wash water tank. An outlet is formed, and a first inlet connected to a second outlet is formed in the first wash water tank, and the height position of the first inlet and the second outlet is the first specified water level. and the second specified water level so that water flows from the second outlet toward the first inlet.

In the washing machine system of this configuration, it is possible to carry out preliminary washing by washing away leftovers and the like from the object to be washed by the preliminary washing machine, and to carry out main washing of the object to be washed from which the leftovers and the like have been removed by the main washing machine. Further, in the washing machine system of this configuration, even when the water discharged from one washing machine, the main washing machine, is used in the other washing machine, the pre-washing machine, the second washing of the main washing machine Water can be supplied from the main washer to the prewasher without connecting the water tank and the first wash water tank of the prewasher via a check valve or a pump. It becomes possible. As a result, the object to be washed can be pre-washed without human intervention, and the structure for supplying water from the washing machine to the pre-washing machine can be constructed at a low cost.

In the washing machine system according to the present invention, the preliminary washing machine further has a door for opening and closing the washing chamber containing the objects to be washed, and the main washing machine further has a door for opening and closing the washing chamber for containing the objects to be washed. may have.

In the washing machine system according to the present invention, the second discharge port is provided at the same height as the second specified water level, and the first discharge port provided in the first wash water tank is provided at the same height as the first specified water level. The first inlet may be provided at the same height position as the first specified water level or at a position higher than the first specified water level. In this configuration, the first specified water level is maintained in the first cleaning water tank, the second specified water level is maintained in the second cleaning water tank, and the first cleaning water is supplied from the second cleaning water tank without providing a pump or the like. Water can flow into the tank.

In the washing machine system according to the present invention, the second outlet is provided at the bottom of the second wash water tank, and the first inlet is connected to the second outlet and provided in the first wash water tank. It may be formed by an opening formed in the upper end of the overflow pipe extending along the vertical direction, and the opening may be provided at a position higher than the first specified water level. It should be noted that extending along the vertical direction here does not necessarily mean extending parallel to the vertical direction. There may be. With this configuration, the first specified water level can be maintained in the first wash water tank and the second specified water level can be maintained in the second wash water tank without providing a pump or the like. Water can flow from the second wash water tank to the first wash water tank without providing a Also, even when two washers are connected, the water discharged from the existing discharge port flows into the first wash water tank without forming a new discharge port in the wash water tank of this washing machine. It is possible to

In the washing machine system according to the present invention, the opening of the overflow pipe may be detachably provided with a tubular member capable of adjusting a margin for insertion into the opening. With this configuration, the height position of the opening in the first wash water tank can be adjusted, so the height position of the second specified water level in the second wash water tank of the washing machine can be easily adjusted.

The washing machine system according to the present invention may further include a transfer section for carrying the objects to be washed into the washing chamber of the preliminary washing machine and carrying the objects to be washed out from the washing chamber of the main washing machine. With this configuration, it is possible to automate the washing of the objects to be washed in the pre-washing machine and the main washing machine.

According to the present invention, an object to be washed can be pre-washed without human intervention, and a structure for supplying water from a washing machine to a pre-washing machine for pre-washing can be constructed at a low cost.

FIG. 1 is a perspective view of a washer system according to one embodiment. 2 is a perspective view of a prewasher included in the washer system of FIG. 1; FIG. FIG. 3 is a diagram showing a schematic configuration of the precleaning machine of FIG. FIG. 4 is a diagram showing a schematic configuration of the flow path of water jetted from the nozzle, with a portion of the flow path of water to the nozzle in FIG. 3 omitted. FIG. 5 is an enlarged perspective view of the separator, the separating portion, and the water receiving portion. 6 is a perspective view of the washing machine included in the washing machine system of FIG. 1. FIG. 7 is a cross-sectional view showing a schematic configuration of the washing machine of FIG. 6. FIG. FIG. 8 is a diagram showing the flow of washing water in the preliminary washing machine of FIG. 2 and the main washing machine of FIG. FIG. 9 is a diagram showing the flow of washing water in the pre-washing machine and the main washing machine according to the modification.

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and overlapping descriptions are omitted. The dimensional proportions of the drawings do not necessarily match those of the description. In the following description, the directions defined in FIGS. 2 and 6 (vertical direction, front-back direction, left-right direction (width direction)) are used.

As shown in FIG. 1, the washer system 200 comprises a pre-immersion tank 203, a first transfer section 204, a pre-washer 1, a main wash machine 101, and a second transfer section 205. . The preliminary soaking tank 203, the first transfer section 204, the preliminary washing machine 1, the main washing machine 101, and the second transfer section 205 are arranged in an L shape when viewed from above.

The preliminary immersion tank 203 is a tank that stores water. In the preliminary soaking tank 203, preliminary washing (removal of deposits, etc.) of the tableware (object to be washed) D may be performed. The first transfer section 204 is arranged next to the pre-immersion tank 203 . The first transport section 204 carries the dish rack L into the washing chamber 3 of the preliminary washing machine 1 . The tableware rack L is a grid-like member on which tableware D such as plates and bowls are arranged. When it is detected that the dish rack L is placed on the base 204 a of the first transport section 204 , the first transport section 204 moves the arm member 204 b to move the dish rack L to the washing chamber of the pre-washing machine 1 . Push to 3.

The pre-washing machine 1 is a washing machine provided for washing away leftover food 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 pre-washes the tableware D in the pre-immersion tank 203, which has been performed manually.

As shown in FIG. 2, the precleaner 1 has a cleaner body 2 covered with a stainless steel panel. The washing machine main body 2 is partitioned into an upper portion 2A in which a washing chamber 3 is formed and a lower portion 2B in which a machine chamber 4 is formed. A support 6 extending vertically across the upper portion 2A and the lower portion 2B is arranged at a corner portion on the rear side of the washing machine main body 2, and a rear panel 5 is arranged between the supports 6, 6. .

A box-shaped door 7 for opening and closing the washing chamber 3 is provided on the upper portion 2A of the washing machine body 2 . The door 7 is guided vertically by a pair of stainless steel pillars 6, 6, and vertically moved by a horizontally extending handle 8A at the front. The door 7 may be automatically opened and closed in conjunction with the transportation of the first transportation 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 ends of a pair of left and right rotating arms 8B, 8B are fixed to both ends of the handle 8A. One end of a link portion 8C arranged along the side surface 7A of the door 7 is rotatably connected to the rotating arms 8B, 8B, and the other end of the link portion 8C is connected to the door 7 via a shaft pin 8D. 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, rack rails 11 are detachably arranged in the washing chamber 3. On the rack rails 11, tableware D such as plates and bowls after eating and drinking are arranged in a grid pattern. tableware rack L is placed. Above the washing chamber 3, an upper washing nozzle 12A consisting of three radially extending arms and an upper rinsing nozzle 13A consisting of two arms are rotatably arranged. Similarly, in the lower part of the washing chamber 3, a lower washing nozzle 12B consisting of three radially extending arms and a lower rinsing nozzle 13B consisting of two arms are rotatably arranged. The dishes arranged in the dish rack L are sprayed with washing water from above and below by the upper washing nozzle 12A and the lower washing nozzle 12B, and are sprayed with rinse water from above and below by the upper rinse nozzle 13A and the lower rinse nozzle 13B.

As shown in FIG. 4 , a first washing water tank 15 is provided at the bottom of the washing chamber 3 so as to protrude into the machine chamber 4 . A separator 18 is arranged between the cleaning chamber 3 and the first cleaning water tank 15 . The separator 18 partitions the cleaning chamber 3 and the first cleaning water tank 15 . The separator 18 is arranged so as to cover the area above the first wash water tank 15 .

As shown in FIGS. 4 and 5, the separator 18 is provided with openings 18H. The opening 18H allows washing water, rinsing water, etc. containing leftover vegetables on the separator 18 to flow out. The opening 18H is arranged, for example, in the separator 18 on the front side and the left side of the washing machine main body 2 . The opening 18H has, for example, a rectangular shape (rectangular shape).

The separating portion 40 is a member extending obliquely forward and downward from the opening portion 18H. The separation unit 40 is a member that separates water and solid matter (such as leftover food), and examples of the member include wedge wire screens, punching metals, and mesh filters.

A housing portion 50 is provided in the washing machine main body 2 . The housing portion 50 is arranged on the front surface of the lower portion 2B of the washing machine main body 2 . Note that the accommodating portion 50 can be provided not only on the front surface of the lower portion 2B but also on another surface. In addition, depending on the installation position of the accommodating section 50, the installation mode of the separation section 40, the position of the opening 18H, and the like can be changed as appropriate.

The storage unit 50 stores the solids and water separated by the separation unit 40 . The housing portion 50 has a main body 51 , a cover 52 , a housing container 53 and a connection pipe 54 . The main body 51 is fixed to the washing machine main body 2 . The main body 51 has a box shape and forms a space for accommodating the container 53 . The cover 52 is provided swingably or detachably on the washing machine main body 2 . The cover 52 opens and closes the upper opening of the main body 51 .

The storage container 53 stores solid matter such as leftover food. The container 53 is detachably attached to the main body 51 . At least part of the container 53 is made of a mesh member. A connection pipe 54 connects the main body 51 and the first washing water tank 15 . The connection pipe 54 allows the water in the main body 51 to flow into the first wash water tank 15 . One end of the connecting pipe 54 is connected to the bottom of the main body 51 , and the other end of the connecting pipe 54 is connected to a hole 15</b>E formed in the bottom of the first wash water tank 15 .

The water receiving portion 61 is a plate-like member arranged below the separation portion 40 . The water receiving portion 61 is arranged so as to incline from the vicinity of the lower end of the separation portion 40 toward the first wash water tank 15 . The water receiving portion 61 guides the water separated from the separation portion 40 and falling to the first wash water tank 15 .

The shutter 63 distributes the water flowing through the water receiving portion 61 to the first section 15X or the second section 15Y of the first wash water tank 15, which will be described in detail later. The shutter 63 has a guide plate 63A, a rotating shaft 63B, and a driving portion 63D. The guiding plate 63A is a plate-like member, and is provided so as to be rotatable about the rotating shaft 63B by the driving force of the driving portion 63D. More specifically, the shutter 63 is in a first state in which the water supplied from the water receiving portion 61 is guided to the first compartment 15X, and in a second state in which the water supplied from the water receiving portion 61 is guided to the second compartment 15Y. It is provided so as to be switchable between the state and the state. The shutter 63 is controlled by a controller 35 which will be described later.

As shown in FIG. 3, a cleaning pump 23 is connected to the front surface of the first cleaning water tank 15 (first section 15X, which will be described later) via a cleaning water suction port. A washing water discharge pipe 21 is connected to the discharge port of the washing pump 23 . The washing water discharge pipe 21 branches into a first washing water discharge pipe 21A and a second washing water discharge pipe 21B, the first washing water discharge pipe 21A is connected to the upper washing nozzle 12A, and the second washing water discharge pipe 21B is connected to the lower cleaning nozzle 12B.

A rinsing water tank 25 to which rinsing water is supplied from the outside through a water supply pipe 25A is arranged in the machine room 4 . A rinse pump 27 is connected to the rinse water tank 25 via a rinse water suction pipe 29 . A rinse water discharge pipe 31 is connected to the discharge port of the rinse pump 27 . The rinse water discharge pipe 31 branches into a first rinse water discharge pipe 31A and a second rinse water discharge pipe 31B. The first rinse water discharge pipe 31A is connected to the upper rinse water nozzle 13A and the second rinse water discharge pipe. 31B is connected to the lower rinse nozzle 13B. The first rinse water discharge pipe 31A is arranged inside the first wash water discharge pipe 21A. That is, the first washing water discharge pipe 21A and the first rinse water discharge pipe 31A have a double pipe structure.

As shown in FIG. 4, the first wash water tank 15 is divided into a first section 15X and a second section 15Y. In the second section 15Y, at the beginning of the washing operation (for example, 5 seconds after the washing pump 23 starts driving), the dishes D are washed with washing water jetted from the upper washing nozzle 12A and the lower washing nozzle 12B. Water is the compartment directed by the shutter 63 in the second state. The first section 15X contains the rinse water that rinses the tableware D with the rinse water jetted from the upper rinse nozzle 13A and the lower rinse nozzle 13B, and the rinse water jetted from the upper wash nozzle 12A and the lower wash nozzle 12B except for the initial stage of the washing operation. The washing water used to wash the tableware D is a section guided by the shutter 63 in the first state.

The first compartment 15X of the first wash water tank 15 has a first inlet 15A connected to the second discharge port 115A (see FIGS. 7 and 8) of the main washing machine 101 and a water level exceeding the first specified water level H1. A first discharge port 15B is formed through which the collected water is discharged. A hole portion 15</b>E is formed in the bottom portion of the first wash water tank 15 to be connected to the housing portion 50 via a connection pipe 54 .

The first discharge port 15B is formed by an upper end opening of an overflow pipe 15C provided in the first wash water tank 15 and extending in the vertical direction. That is, the upper end position of the overflow pipe 15C coincides with the first specified water level H1. The overflow pipe 15C is detachably provided in the hole 15D. The water stored in the first wash water tank 15 is discharged to the outside of the first wash water tank 15 by removing the overflow pipe 15</b>C from the hole 15</b>D of the first wash water tank 15 . A drain pipe 15</b>F is provided below the first wash water tank 15 to discharge the water stored in the first wash water tank 15 to the outside of the pre-washing machine 1 . The drain pipe 15F is connected to the hole 15D.

A drain pipe 15H is connected to the second section 15Y of the first wash water tank 15 through a hole 15G formed in the bottom. The drain pipe 15H is connected to the drain pipe 15F. The drain pipe 15H discharges the water that has flowed into the second section 15Y of the first wash water tank 15 to the outside.

As shown in FIG. 3, the machine room 4 accommodates an electrical box (not shown) in which a controller 35 for controlling the overall operation of the precleaning machine 1 is installed.

Next, the cleaning machine 101 will be described. The main washing machine 101 washes the tableware D preliminarily washed in the prewashing machine 1 . As shown in FIGS. 6 and 7, the washing machine 101 is provided with a separation section 18A such as a mesh member having no guiding function instead of the separation section 40 for guiding the solid matter to the storage section 50. , the water receiving portion 61 and the shutter 63 are not provided, the second wash water tank 115 is not divided into the first section and the second section, and the bottom surface of the second wash water tank 115 is connected. The configuration is the same as that of the precleaning machine 1, except that an on-off valve 115D is provided in the drain pipe 115C. In FIG. 7, the constituent parts of the main washing machine 101 indicated by the same reference numerals as those constituting the pre-washing machine 1 have the same functions as the constituent parts constituting the pre-washing machine 1, so detailed description thereof will be omitted. omitted.

The second wash water tank 115 of the washing machine 101 has a second discharge port 115A through which water exceeding the second specified water level H2 is discharged, and a third discharge port 115A through which the water stored in the second wash water tank 115 is discharged. A discharge port 115B is formed. A drain pipe 115C is connected to the third outlet 115B. The drain pipe 115C is provided with an on-off valve 115D. The water stored in the second wash water tank 115 is discharged to the outside of the second wash water tank 115 by opening the on-off valve 115D. The second discharge port 115A is preferably arranged in place of the overflow pipe of the washing water tank provided in the conventional washing machine, but the conventional overflow pipe may be left.

As shown in FIG. 8, the second discharge port 115A of the main washing machine 101 and the first inlet 15A of the preliminary washing machine 1 are connected via a connecting pipe 120. As shown in FIG. In this embodiment, the height position of the second outlet 115A and the height position of the first inlet 15A are the same. In the pre-washing machine 1 and the main washing machine 101, the second specified water level H2 in the second washing water tank 115 of the main washing machine 101 is higher than the first specified water level H1 in the first washing water tank 15 of the pre-washing machine 1. is set to be That is, the height position of the second discharge port 115A (lowest point of the second discharge port 115A) is provided to be higher than the height position of the first discharge port 15B.

Further, the height positions of the first inlet 15A, the first outlet 15B and the second outlet 115A are determined by the height difference between the first specified water level H1 and the second specified water level H2. It is provided so that water may flow toward the inlet 15A. That is, the height position of the second outlet 115A (the lowest point of the second outlet 115A) and the first inlet 15A (the lowest point of the second outlet 115A) is the height position of the first outlet 15B. located at a higher position than

Returning to FIG. 1 , the second conveying unit 205 carries out the dish rack L containing the dishes D washed in the main washing machine 101 from the washing chamber 3 of the main washing machine 101 . In the second transport unit 205, when it is detected that the dishes D have been washed in the washing machine 101 and the door 7 has been opened, the arm member 205a moves the dish rack L from the washing chamber 3 of the washing machine 101 to the outside. Push out.

Next, the operation of washing machine system 200 will be described. When the power switches of the pre-washing machine 1 and the main washing machine 101 are turned on, the warm water in the rinsing water tanks 25 of the main washing machine 101 and the pre-washing machine 1 is pumped by the rinsing pump 27 to the upper rinsing nozzle 13A and the lower rinsing nozzle 13A. Hot water is supplied into the first wash water tank 15 and the second wash water tank 115 by injecting hot water into the wash chamber 3 through the nozzle 13B. The temperature of the hot water in the rinse water tank 25 is set at around 80° C., for example. As a result, 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 amount of hot water supply is supplied into the first wash water tank 15 and the second wash water tank 115, and the wash water in the first wash water tank 15 and the second wash water tank 115 is removed. becomes the predetermined concentration.

In the above-described initial hot water supply, only the rinsing pump 27 of the main washing machine 101 is operated, and the washing water overflowing from the second discharge port 115A of the second washing water tank 115 is discharged through the connecting pipe 120 to the preliminary washing machine. It may be performed by supplying one first wash water tank 15 . Also, the detergent may be supplied only by the main washing machine 101 at the time of initial hot water supply, and washing water having a predetermined detergent concentration may be supplied from the main washing machine 101 to the first washing water tank 15 of the pre-washing machine 1. . Moreover, instead of supplying water to the cleaning chamber 3 via the upper rinse nozzle 13A and the lower rinse nozzle 13B, a dedicated hot water supply pipe may be provided to supply water.

After the initial hot water supply, when the user places the dish rack L on the base 204a of the first transport unit 204, the first transport unit 204 detects that the dish rack L has been placed on the base 204a, and the arm member 204b starts pushing out the dish rack L to the pre-washing machine 1; When it is detected that the dish rack L is carried into the washing chamber 3 of the preliminary washing machine 1 and the door 7 is closed, an operation start signal is input to the controller 35 . When an operation start signal is input to the controller 35, the washing operation (washing process and rinsing process) of the tableware D in the prewashing machine 1 is started. The washing process of the tableware D is performed by injecting the washing water in the first washing water tank 15 toward the tableware D in the washing chamber 3 . The temperature of the wash water in the first wash water tank 15 is set to 60° C. to 70° C., for example.

The washing water stored in the first washing water tank 15 is pressure-fed to the upper washing nozzle 12A and the lower washing nozzle 12B through the washing water discharge pipe 24 and the like when the washing pump 23 is started, and the upper washing water is washed. The nozzles 12A and lower washing nozzles 12B are jetted toward the tableware in the washing chamber 3 . The washing water sprayed into the washing chamber 3 from the upper washing nozzle 12A and the lower washing nozzle 12B removes leftovers and dirt (hereinafter also referred to as "leftovers, etc.") from the dishes, and together with the washing water, the lower separator. Flow to 18. Washing water containing leftovers and the like dropped on the separator 18 flows into the separation section 40 through the opening 18H provided in the separator 18 .

Solid matter such as leftovers is removed by the separation unit 40, and the wash water containing leftovers and the like that has flowed into the opening 18H is guided along the extending direction of the separation unit 40 together with a part of the wash water, and is transferred to the storage unit 18H. are housed in On the other hand, the cleansing water containing dirt passes through the separating section 40 and drops into the water receiving section 61 . The cleansing water containing dirt that has fallen into the water receiving portion 61 is guided along the inclined surface of the water receiving portion 61 in the direction in which the shutter 63 is arranged, and is supplied to the shutter 63 .

Here, the shutter 63 enters the second state in which the water supplied from the water receiver 61 is guided to the second compartment 15Y at the beginning of the cleaning operation (for example, 5 seconds after the cleaning pump 23 starts driving). is controlled as As a result, the cleansing water containing dirt supplied to the shutter 63 is supplied to the second section 15Y in the first cleansing water tank 15 . The washing water supplied to the second section 15Y of the first washing water tank 15 is discharged to the outside of the preliminary washing machine 1 through the drain pipe 15H. The time set as the beginning of the cleaning operation is appropriately set based on the amount of water stored in the first cleaning water tank 15, the water supply capacity of the cleaning pump 23, and the like.

After the initial stage of the cleaning operation has passed, the shutter 63 is controlled to enter the first state in which the water supplied from the water receiving portion 61 is guided to the first compartment 15X. Thereby, the wash water supplied to the shutter 63 is supplied to the first section 15X in the first wash water tank 15 . Before switching the shutter 63, the supply of cleaning water jetted from the upper cleaning nozzle 12A and the lower cleaning nozzle 12B is temporarily stopped. You may restart the supply of wash water to be used. The washing water collected in the first washing water tank 15 is circulated and supplied again into the washing chamber 3 by the washing pump 23 . After the shutter 63 is switched, the washing pump 23 is stopped after washing the dishes with washing water for a predetermined time (for example, 35 seconds). As a result, the operation of the precleaning machine 1 is temporarily suspended.

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

In the rinsing process, the shutter 63 is controlled to be in the first state of guiding the water supplied from the water receiving portion 61 to the first compartment 15X. The rinse water sprayed onto the tableware D is collected in the first section 15X of the first wash water tank 15 via the separator 18, the separation section 40, the water receiving section 61, the shutter 63, etc., as described above. The rinsing water collected in the first section 15X of the first cleaning water tank 15 is mixed with the cleaning water and used as cleaning water in the next cleaning process. When the rinsing water is injected into the washing chamber 3 and collected in the first washing water tank 15, excess washing water exceeding the first specified water level H1 is discharged to the outside through the overflow pipe 15C. After a predetermined rinsing time (for example, 6 seconds) has passed, the rinsing process ends, and a series of cleaning operations in the precleaning machine 1 ends.

In the preliminary washing machine 1, in order to suppress the degree of contamination of the washing water in the first washing water tank 15, the washing water is discharged to the outside at the beginning of the washing operation. The amount of water discharged to the outside in the initial stage of the washing operation is supplemented by washing water supplied from the washing machine 101 or from the subsequent rinsing process.

As described above, when washing water is discharged from the preliminary washing machine 1 at the beginning of the washing operation, for example, it is necessary to supply washing water to the first washing water tank 15 until the next washing process. Here, when a large amount of wash water is discharged from the pre-washing machine 1, the amount of wash water newly supplied to the first wash water tank 15 is also increased, so that the first wash water tank 15 stores a large amount of wash water. The fouling degree of washing water can be suppressed, and the washing performance can be enhanced. On the other hand, it is necessary to supply washing water to the first washing water tank 15 by the amount of washing water discharged from the pre-washing machine 1. Therefore, for example, the time for the rinsing process in the pre-washing machine 1 may be increased, or the main washing may be It becomes necessary to secure a long time for the rinsing process in the machine 101 . As a result, the operating capacity is lowered and the running cost is increased.

Further, when a small amount of washing water is discharged from the preliminary washing machine 1, the amount of washing water newly supplied to the first washing water tank 15 is also small, so a large amount of washing water is required to be supplied from the preliminary washing machine 1. Compared to the case of discharging, the extent to which the degree of contamination of the wash water stored in the first wash water tank 15 can be suppressed is small, and the degree of improvement in washing performance is also small. On the other hand, since it is sufficient to supply washing water to the first washing water tank 15 by the amount of washing water discharged from the preliminary washing machine 1, for example, the time for the rinsing process in the preliminary washing machine 1 can be shortened, and the main washing machine 101 can be It is possible to shorten the time of the rinsing process in. This improves the operating capacity and reduces running costs. In the washing machine system 200 described above, by adjusting the amount of washing water discharged from the preliminary washing machine 1 at the beginning of the washing operation, it is possible to easily optimize the washing capacity, operating efficiency, and running cost according to the installation location. can.

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 conveying unit 204 pushes the next dish rack L into the washing chamber 3 of the pre-washing machine 1, thereby washing in a pile-up manner. is pushed out to the main washing machine 101. As a result, the dish rack L washed in the preliminary washing machine 1 is carried into the washing chamber 3 of the main washing machine 101 . When the dish rack L is carried into the washing chamber 3 of the washing machine 101, the door 7 of the washing machine 101 is closed. When the door 7 of the cleaning 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 dishes D is performed by spraying the washing water in the second washing water tank 115 toward the dishes in the washing chamber 3 . The temperature of the washing water in the second washing water tank 115 is set to 60° C. to 70° C., for example.

By starting the washing pump 23, the washing water stored in the second washing water tank 115 is pressure-fed to the upper washing nozzle 12A and the lower washing nozzle 12B through the washing water discharge pipe 24 and the like, and the upper washing is performed. The nozzles 12A and lower washing nozzles 12B are jetted toward the tableware in the washing chamber 3 .

The washing water sprayed into the washing chamber 3 is recovered in the second washing water tank 115 . The tableware D to be washed in the main washing machine 101 is in a state where most of the leftovers and the like have been removed in the pre-washing machine 1 . Therefore, the wash water collected in the second wash water tank 115 is relatively clean water. The washing water collected in the second washing water tank 115 is circulated and supplied again into the washing chamber 3 by the washing pump 23 . After the tableware has been washed with the washing water for a predetermined time (for example, 40 seconds), the washing pump 23 is stopped. As a result, the operation of the washing machine 101 is temporarily suspended.

Next, the rinse water stored in the rinse water tank 25 is pressure-fed to the upper rinse nozzle 13A and the lower rinse nozzle 13B through the rinse water discharge pipe 31 and the like by starting the rinse pump 27. The rinsing nozzle 13A and the lower rinsing nozzle 13B are jetted toward the tableware. The temperature of the rinse water pressure-fed from the rinse water tank 25 is set to around 80° C., for example.

The rinsing water sprayed onto the tableware is collected in the second washing water tank 115 through the filter 19, mixed with the washing water, and used as the washing water in the next washing process. Rinsing water is injected into the washing chamber 3 and collected in the second washing water tank 115 . At this time, excess wash water exceeding the second specified water level H2 is discharged through the second discharge port 115A and supplied to the first wash water tank 15 of the pre-washer 1 . After a predetermined rinsing time (for example, 6 seconds) has elapsed, the rinsing process ends, and a series of cleaning operations in the cleaning machine 101 ends.

The cleaning time at the beginning of the cleaning operation, the cleaning time after the beginning of the cleaning operation, and the rinsing time disclosed above are determined by the storage amounts of the first cleaning water tank 15 and the rinsing water tank 25, the cleaning pump 23 and It is appropriately set based on the water supply capacity of the rinsing pump 27 and the like.

Next, the effects of the washing machine system 200 of this embodiment will be described. In the washing machine system 200 of the present embodiment, the preliminary washing machine 1 can perform preliminary washing to wash away the leftover food and the like from the tableware D, and the main washing machine 101 can wash the tableware D from which the leftover food and the like have been removed. Further, in the washing machine system 200 of the above-described embodiment, even when the water discharged from the main washing machine 101, which is one of the washing machines, is used in the pre-washing machine 1, which is the other washing machine, the main washing machine 101 and the first washing water tank 15 of the preliminary washing machine 1 are not connected via a check valve or a pump, the main washing machine 101 can supply the preliminary washing water. Water can be supplied to the washing machine 1 . As a result, the tableware D can be pre-washed without human intervention, and the structure for supplying water from the main washing machine 101 to the pre-washing machine 1 for pre-washing can be constructed at a low cost.

In addition, in the washing machine system 200 of the present embodiment, since the preliminary washing machine 1 performs washing using the water supplied from the main washing machine 101, the preliminary washing machine 1 and the main washing machine 101 are independent of each other. The amount of water used can be suppressed compared to the case where water is supplied by

In the washing machine system 200 of the above embodiment, the second discharge port 115A is provided at the same height position as the second specified water level H2, and the first discharge port 15B is provided at the same height position as the first specified water level H1. The first inlet 15A is provided at a position higher than the first specified water level H1. In this configuration, the first specified water level H1 is maintained in the first cleaning water tank 15, the second specified water level H2 is maintained in the second cleaning water tank 115, and the second cleaning water tank 115 is maintained without providing a pump or the like. Water can flow into the first wash water tank 15 from the .

In the washing machine system 200 of the above embodiment, the first conveying section 204 and the second conveying section carry the tableware D into the washing chamber 3 of the preliminary washing machine 1 and unload the tableware D from the washing chamber 3 of the main washing machine 101. 205. With this configuration, the washing of the tableware D in the pre-washing machine 1 and the main washing machine 101 can be automated.

Since the pre-washing machine 1 of the above-described embodiment includes the separation section 40 that is arranged to be inclined downward toward the storage section 50, the solid matter separated by the separation section 40 can be discharged to the storage section together with water. As a result, it is possible to prevent solids from remaining in the separation section, and to avoid the problem that water does not pass through the separation section 40 . As a result, maintenance can be improved.

In the preliminary washing machine 1 of the above-described embodiment, the washing water in the initial stage of the washing operation, in which a relatively large amount of dirt contained in the leftover food is dissolved, is not collected in the first washing water tank 15 and is discharged to the outside as it is. Contamination of the wash water stored in the first wash water tank 15 can be suppressed. As a result, it is possible to increase the cleaning performance and reduce the frequency of replacement of the cleaning water stored in the first cleaning water tank 15, so that the preliminary cleaning machine 1 can be operated continuously.

In the washing machine system 200 of the above-described embodiment, the tableware D can be washed continuously by the pre-washing machine 1 and the main washing machine 101. Therefore, the frequency of replacement of washing water is reduced, and the amount of water used or the temperature rise is reduced. Consumption of necessary energy can be suppressed.

As described above, the washing machine system 200 of the above-described embodiment can provide the pre-washing machine 1 excellent in maintainability and washing performance. D is washed again by the main washing machine 101 . This makes it possible to provide a washing machine system with a higher washing effect.

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 scope of the invention.

In the above embodiment, the position of the second discharge port 115A is set at the same height position as the second specified water level H2, and washing water is supplied from the main washing machine 101 to the preliminary washing machine 1 through the connection pipe 120. Although an example has been given and described, it is not limited to this. For example, the second outlet 115A may be provided at the bottom of the second wash water tank 115, as shown in FIG. The first inlet 15A is formed by an opening formed at the upper end of an overflow pipe 120B that is connected to the second outlet 115A and extends in the vertical direction provided in the first wash water tank 15. may be The opening in this case is provided at a position higher than the first specified water level H1.

Although the overflow pipe 120B of the above embodiment has been described as an example extending in parallel with the vertical direction, it can be arranged in an inclined state as long as it extends from the vertically downward direction to the vertically upward direction. good. In this case, the lowest point of the opening of the overflow pipe 120B must be above the first specified water level H1.

With this configuration, the first specified water level H1 can be maintained in the first wash water tank 15 and the second specified water level H2 can be maintained in the second wash water tank 115 without providing a pump or the like. Then, water can flow from the second wash water tank 115 into the first wash water tank 15 without providing a pump or the like. Moreover, even when two washing machines (the main washing machine 101 and the pre-washing machine 1) are connected, there is no need to form a new discharge port in the second washing water tank 115 of the main washing machine 101. It is possible to allow the water discharged from the outlet to flow into the first wash water tank 15 .

Moreover, in this configuration, compared to the case where the second discharge port 115A is provided on the side of the second wash water tank 115 as in the above embodiment, it is possible to increase the degree of freedom in installing the piping. In addition, the second discharge port 115A does not need to be installed at the same height position as the second specified water level H2, and can be installed anywhere as long as it is lower than the second specified water level H2, so the degree of freedom in design is high. Become. That is, there is no need to manufacture a dedicated washing machine provided with the second discharge port 115A corresponding to the arrangement position of the pre-washing machine 1 arranged adjacently.

In addition, in the configuration relating to the overflow tube 120B, the opening of the overflow tube 120B may be detachably provided with a tubular member capable of adjusting the insertion margin into the opening. With this configuration, the height position of the opening in the first wash water tank 15 can be adjusted, so the height position of the second specified water level H2 in the second wash water tank 115 of the washing machine 101 can be easily adjusted. be able to. The position at which water flows out of the overflow pipe 120B can also be adjusted by cutting the upper end of the overflow pipe 120B or providing a hole in the overflow pipe 120B.

Although the overflow pipe 15C of the above embodiment has been described as an example in which it extends parallel to the vertical direction, it can be arranged in an inclined state as long as it extends from the vertically downward direction to the vertically upward direction. good. In this case, the lowest point of the opening of the overflow pipe 15C is the first specified water level.

The washing machine 101 of the above embodiment has been described with an example in which the on-off valve 115D for discharging the water stored in the second washing water tank 115 is provided, but it is not limited to this. For example, instead of the on-off valve 115D, an overflow pipe that is detachably attached to the bottom of the second wash water tank 115 may be provided. In this case, the overflow pipe is normally operated to block the opening of the overflow pipe or is configured to be able to block, or the height position of the opening of the overflow pipe is higher than the height position of the second discharge port 115A. do it.

The first washing water tank 15 of the pre-washing machine 1 of the above embodiment has been described as an example in which the overflow pipe 15C is provided. A drain pipe and an on-off valve may be added to separate the function of discharging the overflowed water from the function of discharging the water stored in the first wash water tank 15 .

In the washing machine system 200 of the above-described embodiment, the first conveying unit 204 moves the dish rack L to the preliminary washing machine 1 and moves the dish rack L from the preliminary washing machine 1 to the main washing machine 101. Although an example in which the dish rack L is moved from the main washing machine 101 by the 2 transport unit 205 has been described, each of the above movements may be performed by an operator.

Further, in the preliminary washing machine 1, not only washing using the washing water stored in the first washing water tank 15 but also rinsing using the rinsing water stored in the rinsing water tank 25 is performed. Washing water (washing water containing detergent) hardly adheres to the washed tableware D or the like. As a result, when the worker moves the dish rack L from the pre-washing machine 1 to the main washing machine 101, the worker's hands and the like can be protected from the detergent without coming into contact with the detergent.

The pre-washing machine 1 and the main washing machine 101 of the above-described embodiment have been described as an example of a washing machine of a type in which the door 7 is vertically movable. It can also be applied to a type of dishwasher or the like in which a door 7 is provided on the front side.

The present invention may appropriately combine the contents described as the above embodiments, the above modifications, and other modifications without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1... Pre-washing machine, 3... Washing chamber, 15... First wash water tank, 15A... First inlet, 15B... First outlet, 15X... First compartment, 15Y... Second compartment, 18... Separator, 18H Opening part 40 Separation part 50 Storage part 61 Water receiving part 63 Shutter 101 Main washing machine 115 Second washing water tank 115A Second discharge port 115B Third discharge Outlet, 120... Connecting pipe, 120B... Overflow pipe, 200... Washing machine system, 203... Preliminary soaking tank, D... Tableware, H1... First specified water level, H2... Second specified water level, L... Tableware rack.

Claims (4)

a first washing chamber for accommodating an object to be washed; a first washing water tank for storing water to be supplied to the first washing chamber in a washing process; and a first washing tank for storing water to be supplied to the first washing chamber in a rinsing process. a prewash machine having a rinse tank and a first door opening and closing said first wash chamber ;
a second washing chamber for storing an object to be washed; a second washing water tank for storing water to be supplied to the second washing chamber in a washing process; and a second washing tank for storing water to be supplied to the second washing chamber in a rinsing process. A washing machine system comprising: a main washing machine having two rinsing tanks and a second door for opening and closing the second washing chamber, and washing an object washed in the pre-washing machine,
The washing process and the rinsing process in the preliminary washing machine and the washing process and the rinsing process in the main washing machine are configured to be independently executable,
The pre-washing machine is detachably provided with a storage container for storing solids flowing into the first washing chamber together with water,
In the preliminary washing machine and the main washing machine, the second specified water level, which is the specified water level of the second cleaning water tank, is set to be higher than the first specified water level, which is the specified water level of the first cleaning water tank. has been
The second wash water tank is formed with a second outlet through which water exceeding the second specified water level is discharged,
The first wash water tank is formed with a first inlet connected to the second outlet,
The height positions of the first inlet and the second outlet are such that water flows from the second outlet toward the first inlet due to the height difference between the first specified water level and the second specified water level. The washer system is provided as follows. The second discharge port is provided at the same height position as the second specified water level,
A first discharge port provided in the first wash water tank is provided at the same height position as the first specified water level,
2. The washer system according to claim 1 , wherein said first inlet is provided at the same height position as said first specified water level or at a position higher than said first specified water level. The second outlet is provided at the bottom of the second wash water tank,
the first inlet is formed by an opening formed at the upper end of an overflow pipe connected to the second outlet and extending along the vertical direction provided in the first wash water tank;
2. The washer system according to claim 1 , wherein said opening is provided at a position higher than said first specified water level. 4. The washing machine system according to claim 3 , wherein said opening of said overflow pipe is detachably provided with a tubular member capable of adjusting an insertion margin into said opening.

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