JP2020081616A - Dishwashing system - Google Patents

Abstract

To provide a dishwashing system that can more reliably remove stains and allows for further improvement of work efficiency.SOLUTION: The dishwashing system is provided that comprises a washing unit washing dish, and an immersion unit for the dish provided separately from the washing unit. The immersion unit includes an immersion tank housing the dish and a medium for immersion, and a pump device sending washing liquid to the immersion tank. The pump device can operate depending on a predetermined operation of the washing unit.SELECTED DRAWING: Figure 1

Description

The present invention relates to a dishwashing system and a dishwashing method.

When washing dishes in commercial facilities, hospitals, nursing facilities, schools, businesses, etc., a so-called automatic dishwasher for business, which is suitable for washing a large amount of dishes in a short time, is used. In the washing of dishes using an automatic dishwashing machine for business use, before washing with the washing machine, after preliminarily washing with a sponge after immersing the dishes in a predetermined immersion liquid. In order to perform such washing, for example, a dipping tank for immersing dishes in immersion water such as water, a dishwashing system including a dipping tank and a dishwasher for washing dishes after dipping is used. There is.

Patent Document 1 discloses a dishwashing system including a dishwasher having a machine room provided with a washing pump, and a dipping tank for immersing dishes in immersion water. The immersion water in the immersion tank is provided with a pump and a circulation pipe connecting the first pump and the immersion tank, and by circulating water circulated through the circulation pipe by driving the first pump. Disclosed is a dishwashing system in which is agitated.

In Patent Document 2, a water tank main body having a tableware storage chamber in which immersion water is stored and in which dishes are immersed in a stacked state is provided, and suction is performed with a suction unit for sucking the immersion water in the tableware storage chamber. A tableware dipping tank provided on the side surface of the aquarium body with a jet flow generator that circulates the dipping water in a substantially horizontal direction with a width corresponding to the depth of the tableware accommodating chamber, having a spouting part for jetting the dipping water. It is disclosed.

JP, 2010-148831, A JP, 7-95947, A

In washing dishes with an automatic dishwasher for business use, it is desired that dirt can be removed more reliably and work efficiency be further improved.
The present invention provides a dishwashing system that can more reliably remove dirt and improve work efficiency.

The present invention is a dishwashing system comprising a washing unit for washing dishes, and a dishing unit provided separately from the washing unit,
The dipping unit includes a dipping tank that contains dishes and a dipping medium, and a pump device that sends a cleaning liquid to the dipping tank,
The pump device is a pump device operable according to a predetermined operation of the cleaning unit,
Dishwashing system.

Further, the present invention is a method of washing dishes by a dishwashing system comprising a washing unit for washing dishes, and a dishing unit provided separately from the washing unit,
The immersion unit includes an immersion tank for dishes and a pump device for sending a cleaning liquid to the immersion tank,
Place the dishes in the cleaning unit, and put the immersion medium containing water and the dishes in the immersion tank,
Activating the pump device according to a predetermined operation of the cleaning unit to send a cleaning liquid to the immersion unit,
A method for cleaning dishes.

ADVANTAGE OF THE INVENTION According to this invention, the dishwashing system which can remove dirt more reliably and can improve work efficiency is provided.

Schematic diagram showing an example of the dishwashing system of the present invention

<Dishwashing system>
The dishwashing system of the present invention includes a washing unit for washing dishes and a dishing unit provided separately from the washing unit.
The immersion unit includes an immersion tank that stores dishes and an immersion medium, and a pump device that sends a cleaning liquid to the immersion tank.

The washing unit is, for example, a commercial dishwasher, and various types of commercially available devices can be used. In one example, the cleaning unit receives several to ten or more dishes stored in the rack together with the rack, sprays heated cleaning water in the presence of the cleaning agent, and performs cleaning for about 1 minute. Wash the dishes by. The washed dishes are usually air dried together with the rack and replaced with the next rack. By repeating this cycle, hundreds of dishes per hour or more can be washed.

When the cleaning unit is an automatic dishwasher for business use, there are various products such as a door type, a twin rack type, and an undercounter type, and any of those having the above-mentioned functions can be used. The cleaning unit is usually directly connected to the water supply and operated by connecting to a single-phase or three-phase power source. The dishes include not only dishes of various shapes and sizes, but also all those subject to automatic dish washing such as forks, spoons, knives, and chopsticks, and may be cooking utensils. In the case of cooking utensils, the cleaning unit is sometimes called an utensil washer.

The cleaning unit is provided with, for example, a panel for control, and the panel may be provided with a power switch, an operation switch, a setting switch for temperature and water pressure, a switching switch for cleaning and rinsing, a course setting switch, and the like. In the dishwashing system of the present invention, for example, the operation of the operation switch is associated with the operation of the pump device described later.

The tableware dipping unit is provided separately from the cleaning unit and has a dipping tank for housing the tableware before being washed by the cleaning unit. The immersion tank is preferably installed in the vicinity of the cleaning unit, for example, adjacent to the cleaning unit, and may have any size and shape as long as it can store the tableware and the immersion medium before cleaning. Good. In one example, the immersion tank is a commercial stainless steel sink, which can be of any type, such as one tank type, two tank type, three tank type, and those with a back guard or with rounded corners. It may be a thing. The size is generally about 450 mm to 1800 mm in frontage, about 450 mm to 750 mm in depth, and about 700 mm to 900 mm in height, but the size is not limited to these. The depth of the dipping tank is about 200 mm to 400 mm, and therefore the capacity can be in the range of about 40 liters to 540 liters, but is not limited to this.

The dipping bath contains dishes and a dipping medium. The tableware here is, for example, a tableware that has been returned to the kitchen after serving food to a customer in a dining room, a restaurant, or various restaurants, and has residues of cooking, oil stains, and the like attached thereto. The immersion medium is for pre-immersing such dishes in order to easily remove stains and accelerate the cleaning process in the cleaning unit, and may be, for example, water or hot water containing a cleaning agent. In many cases, the dishes are manually placed in the dipping medium in a dipping bath to be dipped, then transferred to a rack and introduced into a washing unit. There is no particular limitation on the immersion time. The immersion tank is usually provided with a drain plug and an overflow outlet. Here, the overflow discharge port can be provided above the side surface of the immersion tank, and can be realized by providing a hole above the side surface or by providing a discharge groove at an edge portion above the side surface. If necessary, a water supply tap, for example, a mixing tap for hot water and cold water can be provided.

The immersion tank may be supplied with the cleaning liquid from a pump device. The pump device may include a cleaning agent introducing unit, a diluting water introducing unit, a mixing unit that mixes the cleaning agent and the diluting water into a cleaning liquid, and a cleaning liquid discharging unit. The pump device may supply the cleaning liquid to an empty immersion tank, or may additionally supply the cleaning liquid to the immersion medium having a constant water level in the immersion tank.

The pump device includes, for example, a water supply port to which water is supplied (diluting water introducing means), a cleaning agent supply port to which a cleaning agent is supplied (cleaning agent introducing means), and an outlet (discharging means) from which cleaning liquid is discharged. ) And the mixing means operates to mix the water supplied from the water supply port and the cleaning agent supply port with the cleaning agent at a predetermined ratio to dilute the cleaning agent, and to discharge the resulting cleaning liquid from the outlet. It is possible.

In one example, the water supply port is directly connected to the tap water, and the tap water is on/off controlled by a solenoid valve and sent to the constant flow valve. The constant flow valve is connected to the mixing unit, and the cleaning agent from the cleaning agent supply port is added thereto. In one example, the pump device includes a tube pump (ironing pump), which is disposed between the cleaning agent supply port and the mixing unit and whose speed is controllable. By means of the tube pump the detergent is added to the mixing unit and thus diluted in the desired ratio. The cleaning liquid obtained by diluting is supplied from the outlet to the immersion tank.

In one example, the pump device contains the cleaning agent on a mass basis, preferably 0.01% or more, more preferably 0.05% or more, still more preferably 0.1% or more, and preferably 1.0% or less. , More preferably 0.5% or less, and further preferably 0.2% or less.
This dilution concentration can be set, for example, by controlling the speed of the tube pump. Further, the pump device is preferably 0.01 L/min or more, more preferably 0.1 L/min or more, even more preferably 1 L/min or more, and preferably 50 L/min or less, more preferably 30 L/min of the cleaning liquid from the outlet. It is possible to discharge at a rate of not more than a minute, more preferably not more than 20 L/minute. This discharge amount can be set by a constant flow valve.

Further, the pump device may have, for example, a switch for performing a fixed amount supply, and when the switch is operated, the cleaning liquid having a predetermined concentration is supplied in a predetermined amount, for example, an amount suitable for the immersion tank to be used. You can For example, to supply 100 liters of cleaning liquid to an empty immersion tank, the pump device may operate for 10 minutes at a discharge rate of 10 L/min when this switch is operated. The discharge amount and the operating time can be set appropriately.

According to an example of the present invention, the pump device is a pump device that is operable in response to a predetermined operation of the cleaning unit. The predetermined operation of the cleaning unit may be, for example, closing the operation switch of the cleaning unit. "Depending on the predetermined operation of the cleaning unit" means that the pump device operates in association with the operation of the cleaning unit, for example, it operates in conjunction with turning on of the operation switch, which means that, for example, This can be achieved by taking the power supply from the washing unit and operating the pump device for a certain time when the operating switch of the washing unit is turned on. In one example, when the operation switch of the cleaning unit is turned on, that is, when the cleaning of the cleaning unit is started, an operating voltage is applied to the pump device for only 1 minute, and a predetermined amount of cleaning liquid is supplied from the outlet to the immersion tank. can do.

Other predetermined operations of the cleaning unit include elapse of a predetermined time after the operation switch is turned on, completion of cleaning, opening and closing of the door of the dishwasher, and the like. By making such an association, the pump device can discharge a predetermined amount of cleaning liquid into the immersion tank each time the cleaning unit is operated. When dishes are washed by the washing unit, for example, dishes for one rack are washed, and dishes for the next rack are taken out of the dipping tank and transferred to the washing unit. When the cleaning liquid is discharged into the dipping tank each time, the cleaning liquid is appropriately replenished, and oil stains and the like floating on the dipping medium are washed away to prevent the accumulation of stains in the dipping bath. Of course, the operation of the pump device may be associated with a plurality of operations of the cleaning unit, and for example, the pump device may be set to operate for a predetermined time every two or three cleaning operations.

According to one example, the immersion unit can comprise control means for controlling the operation of the pump device. This control means may be, for example, a processor or a logic device provided in the pump device, and operates a solenoid valve in response to a predetermined operation of the cleaning unit, for example, in response to a signal sent from the cleaning unit in response to turning on of an operation switch. Open and rotate the tube pump to discharge the required amount of cleaning liquid. After that, the control means controls the pump device by, for example, closing the electromagnetic valve and stopping the rotation operation of the tube pump when the pump device discharges a predetermined amount of cleaning liquid or when it operates for a predetermined time. May be

According to another example, the immersion tank may be provided with a water level sensor to control the operation of the pump device depending on the water level. For example, the water level sensor can be connected to the control means of the pump device, and when the immersion medium does not reach the predetermined water level, the operating time of the pump device corresponding to the predetermined operation of the cleaning unit can be lengthened. When the immersion medium has a predetermined water level or higher, the operating time of the pump device may be shortened to reduce the amount of the cleaning liquid discharged.

As mentioned above, the immersion tank may be provided with an overflow outlet. When the immersion unit operates in conjunction with the operation of the cleaning unit and a predetermined amount of cleaning liquid is added to the immersion medium in the immersion tank, the dirt floating on the immersion medium can be discharged from the overflow discharge port. In this case, the predetermined amount of the cleaning liquid may be 1% or more and 5% or less of the maximum volume of the immersion medium that does not cause overflow in the immersion tank. For example, if the maximum capacity is 100 liters, the predetermined amount is 1 liter to 5 liters, and if the pump device can operate at 5 L/min, it may be operated within 1 minute.

In the present invention, the tableware includes dishes, bowls, cups, glasses, chopsticks, spoons, forks, knives, and other appliances used for meals, as well as storage containers such as tappers and bottles, knives, cutting boards, pots, and frying pans. , A cooking appliance such as a grilled fish, and the like may include a member or appliance with which foodstuffs come into contact.

<How to wash dishes>
The dishwashing method of the present invention is a method for washing dishes by a dishwashing system including a washing unit for washing dishes and a dishing unit provided separately from the washing unit,
The immersion unit includes an immersion tank for dishes and a pump device for sending a cleaning liquid to the immersion tank,
Place the dishes in the cleaning unit, and put the immersion medium containing water and the dishes in the immersion tank,
Activating the pump device according to a predetermined operation of the cleaning unit to send a cleaning liquid to the immersion unit,
This is a dishwashing method.

The dishwashing method of the present invention is preferably carried out using the dishwashing system of the present invention.
Regarding the dishwashing system used in the dishwashing method of the present invention, specific examples and preferable aspects of the washing unit and the dish immersion unit are the same as those of the dishwashing system of the present invention. The items described in the dishwashing system of the present invention can be applied to the dishwashing method as appropriate.

In the present invention, the pump device is operated in accordance with a predetermined operation of the cleaning unit to send the cleaning liquid to the immersion unit. As described above, by operating the pump device in association with operations such as starting cleaning of the cleaning unit, completion of cleaning, and opening/closing of the door of the dishwasher, the pump device is located every time the cleaning unit is operated. A fixed amount of cleaning liquid can be discharged into the immersion tank. In one example, when the cleaning of the cleaning unit is started, the pump device can be operated to send the cleaning liquid to the immersion unit. Thus, in the present invention, the cleaning liquid is added to the immersion medium in the immersion tank at a predetermined timing, and the concentration of the active ingredient such as the surfactant in the immersion medium is maintained. As described above, the immersion tank may be provided with an overflow outlet, in which case the dirt floating in the immersion medium is discharged from the immersion tank, preferably from the outlet, by overflow of the immersion medium. You can In the present invention, the overflow may be caused by sending the cleaning liquid to the immersion tank.

In the present invention, the cleaning liquid can be prepared by mixing the cleaning agent and the diluting water with the pump device. In one example, the pump device can include a cleaning agent introducing unit, a diluting water introducing unit, a mixing unit that mixes the cleaning agent and the diluting water into a cleaning liquid, and a cleaning liquid discharging unit. It is preferable to use such a pump device.

In the present invention, the pump device can be controlled so that when the pump device sends a predetermined amount of the cleaning liquid to the immersion tank, the supply of the cleaning liquid is stopped. In this case, the predetermined amount may be 1% or more and 5% or less of the maximum capacity at which overflow does not occur in the immersion tank.

In the present invention, the tableware can be immersed for a predetermined time after the introduction of the cleaning liquid. For example, the dishes can be immersed for 1 to 180 minutes after the introduction of the cleaning liquid.

In the present invention, tableware immersed in the immersion medium for a predetermined time can be subjected to cleaning by the cleaning unit. For example, the dishes immersed in the immersion medium for 1 to 180 minutes can be subjected to cleaning by the cleaning unit.

<Cleaning agent>
The washing liquid used in the dishwashing system and dishwashing method of the present invention (hereinafter, also referred to as the washing liquid of the present invention in some cases) can be prepared, for example, from a known detergent suitable for this type of washing.
The cleaning agent used in the cleaning liquid of the present invention is preferably a food stain resulting from oil or starch contained in food, which is separated from dishes as much as possible without applying mechanical force during immersion, and the separated stain is What is floated on the upper part of the cleaning liquid (cleaning medium) in the immersion tank is more preferable.

As an example of the detergent used in the cleaning liquid of the present invention, (A) anionic surfactant, (B) nonionic surfactant, (C) hydrotrope agent, and (D) other components [(A) to Excluding (C)] is included.

Examples of the anionic surfactant (A) include anionic surfactants having a hydrocarbon group having 8 to 21 carbon atoms and a sulfate ester group or a sulfonic acid group. Specifically, (A1) sulfosuccinate or a salt thereof [hereinafter referred to as (A1) component], (A2) sulfuric acid ester salt [hereinafter referred to as (A2) component], (A3) substituted benzene sulfonate [hereinafter referred to as , (A3) component], and (A4) one or more anionic surfactants selected from alkane sulfonates.

Examples of the component (A1) include those in which the hydrocarbon group is an alkyl group. Examples of the component (A1) include dialkyl sulfosuccinate having two linear or branched alkyl groups having 8 to 18 carbon atoms or a salt thereof. Specific examples include dialkyl sulfosuccinate represented by the following general formula (A1) or a salt thereof.

[In the formula, R ^1a and R ^2a are each a linear or branched alkyl group having 8 to 18 carbon atoms. M is an inorganic or organic cation. ]

R ^1a and R ^2a in the general formula (A1) may be the same or different. The carbon numbers of R ^1a and R ^2a are each 8 or more from the viewpoint of improving the removability of food stains, especially starch stains, and from the viewpoint of further improving the removability of food stains, especially starch stains. Therefore, it is 18 or less, more preferably 14 or less, still more preferably 10 or less.
In formula (A1), R ^1a and R ^2a are each specifically an n-octyl group, a nonyl group, a decyl group, a dodecyl group, a tridecyl group, a 2-ethylhexyl group, a sec-octyl group, an isopentyl group. , An alkyl group selected from an isononyl group, an isodecyl group, and a cyclohexyl group, and a group selected from an n-octyl group, a sec-octyl group, a decyl group, an isodecyl group, and a 2-ethylhexyl group is preferable.
In the general formula (A1), M is selected from an inorganic cation selected from hydrogen ion, sodium ion, potassium ion, lithium ion, magnesium ion and ammonium ion, monoethanolammonium ion, diethanolammonium ion and triethanolammonium ion. Examples of the organic cations include cations selected from sodium ion, potassium ion, magnesium ion, and ammonium ion. Preferred are sodium ion and potassium ion, with sodium ion being more preferred.

Examples of the component (A2) include those having an alkyl group, an alkenyl group, or an aryl group as a hydrocarbon group.
The component (A2) may contain an oxyalkylene group.
Examples of the component (A2) include alkyl sulfate ester salts and polyoxyalkylene alkyl ether sulfate ester salts.
From the viewpoint of detergency, the hydrocarbon group as the component (A2) has a carbon number of 8 or more, preferably 10 or more, more preferably 12 or more, and 18 or less, preferably 14 or less, more preferably 12 or less.
The salt of the component (A2) is the same as that of the component (A1).

As the component (A3), a substituted benzenesulfonate having a hydrocarbon group having 10 to 16 carbon atoms and a sulfonic acid group is preferable. Examples of the component (A3) include those in which the hydrocarbon group is an alkyl group. The component (A) is more preferably an alkylbenzene sulfonate having an alkyl group having 10 to 16 carbon atoms and a sulfonic acid group. The salt is the same as the component (A1).

Examples of the component (A4) include alkanesulfonic acids having 8 to 24 carbon atoms. The salt is the same as the component (A1).

(B) Nonionic surfactants include alkyl (poly)glycosides and polyoxyalkylene alkyl ethers. Specifically, (B1) an alkyl(poly)glycoside represented by the following general formula (B1) [hereinafter referred to as a component (B1)], (B2) a polyoxyalkylenealkyl represented by the following general formula (B2). And at least one nonionic surfactant selected from the polyoxyalkylene alkyl ethers represented by the general formula (B3) below.
R ^1b (OR ^2b ) _x G _y (B1)
[In the formula, R ^1b represents a linear or branched alkyl group having 8 or more and 18 or less, preferably 12 or more and 14 or less carbon atoms, an alkenyl group or an alkylphenyl group, preferably an alkyl group, and R ^2b represents carbon. It represents an alkylene group of 2 or more and 4 or less, and G represents a residue derived from a reducing sugar having 5 or 6 carbon atoms. x represents the average number of moles added and is a number of 0 or more and 5 or less. y represents a number whose average value is 1 or more and 5 or less. ]
_{^{R 3b O- (EO) z -H}} (B2)
[In the formula, R ^3b is a branched chain alkyl group having 6 or more and 18 or less carbon atoms, EO is an ethyleneoxy group, z is the average number of moles of addition of EO, and is a number from 0 to 6 inclusive. is there. ]
R ^4b O-[(EO) _m ·(AO) _n ]-H (B3)
[In the formula, R ^4b is a secondary alkyl group having 8 to 20 carbon atoms, EO is an ethyleneoxy group, AO is an alkyleneoxy group having 3 or 4 carbon atoms, and m is The average addition mole number of EO is shown, n shows the average addition mole number of AO, m is a number of 4 or more and 10 or less, n is a number of 1 or more and 6 or less, and EO and AO are blocks. Or, they are combined randomly. ]

Regarding the component (B2), the carbon number of R ^{3b in} the general formula (B2) is 6 or more, preferably 8 or more, more preferably 10 or more, and 18 or less, preferably from the viewpoint of detergency and suppression of foaming. It is 14 or less.
As the branched chain alkyl group represented by R ^{3b in} the general formula (B2), the terminal of the alkyl group may be iso-branched, and an alkyl group derived from a secondary alcohol (a residue obtained by removing a hydroxyl group from a secondary alcohol). ).
R ^3b in the general formula (B2) is preferably a secondary alkyl group, from the viewpoint of detergency and suppression of foaming when a mechanical washer is used. Here, the secondary alkyl group is a residue obtained by removing a hydroxyl group from a secondary alcohol, and the carbon atom of R ^3b bonded to O in R ^3b O in the general formula (B2) is a secondary carbon. It is an atom. Regarding the component (B2), the secondary alkyl group is included in the branched chain alkyl group.

Regarding the component (B3), R ^4b in the general formula (B3) is a secondary alkyl group having 8 or more and 20 or less carbon atoms. Here, the secondary alkyl group is a residue obtained by removing a hydroxyl group from a secondary alcohol, and the carbon atom of R ^4b bonded to O— in R ^4b O— in the general formula (B3) is the second. It is a primary carbon atom.
The carbon number of R ^4b is 8 or more, preferably 9 or more, more preferably 10 or more from the viewpoint of detergency and suppression of foaming, and 20 or less, preferably 18 or less, more preferably from the viewpoint of transparency stability. It is 16 or less.

Examples of the (C) hydrotrope include a solvent from the viewpoint of lowering the viscosity of the composition and improving the handleability. The component (C) is preferably a water-soluble organic solvent having 2 or more carbon atoms, more preferably 3 or more carbon atoms, and preferably 10 or less carbon atoms, more preferably 8 or less carbon atoms. Component (C) is ethanol, isopropyl alcohol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, glycerin, isoprene glycol, propylene glycol monomethyl ether, propylene glycol monoethyl ether, 3-methyl-3-methoxybutanol, phenyl glycol. A water-soluble organic solvent selected from phenoxyisopropanol, and butyldiglycol (diethylene glycol monobutyl ether) is preferable.

As the other component (excluding (A) to (C)) (D), any known component can be used as long as the object of the present invention is not impaired. Specifically, components such as a dispersant, a pH adjusting agent, a thickening agent, a viscosity adjusting agent, a fragrance, a coloring agent, an antioxidant, a preservative, a foam suppressant, a bleaching agent, a bleaching activator (however, ( A) to (C) are excluded).

The pH of the cleansing agent is preferably 5 or more, more preferably 5.5 or more, still more preferably 6 or more at 20° C. from the viewpoint of detergency, and preferably 10 from the viewpoint of reducing the burden on the skin. Or less, more preferably 9 or less, still more preferably 8 or less. Further, the cleaning liquid of the present invention may have a pH within this range. In that case, it may be pH at 20° C. or pH at the washing temperature.

An example of washing dishes using the dishwashing system of the present invention will be described with reference to FIG.
In FIG. 1, 1 is a dipping tank, 2 is a pump device, 3 is a dishwasher, 4 is a cleaning agent, 5 is tableware, 6 is an overflow outlet, 7a is dirt adhering to dishes, 7b is floating dirt, 8 Is the immersion medium. The immersion tank 1 and the pump device 2 may be components of the immersion unit. Also, the dishwasher 3 may be a component of a washing unit.

In this example, dirty tableware 5 is immersed in immersion medium 8 in immersion tank 1. The immersion medium 8 contains water. The immersion tank 1 has an overflow discharge port 6 formed therein.

In this example, although not shown, the pump device 2 includes a water supply port to which water is supplied (diluting water introducing means), a cleaning agent supply port to which a cleaning agent is supplied (cleaning agent introducing means), And an outlet through which the cleaning liquid is discharged (discharging means), and the mixing means dilutes the cleaning agent by mixing the water supplied from the water supply port and the cleaning agent supply port with the cleaning agent at a predetermined ratio. It operates so as to discharge the obtained cleaning liquid from the outlet. One end of the cleaning agent supply port communicates with the cleaning agent 4, and the cleaning agent 4 can be pumped up if necessary. In the figure, the arrow from the cleaning agent 4 indicates this.
Further, in the pump device 2, the water supply port is directly connected to the water supply (in the figure, the upper arrow toward the pump device 2 indicates this), and the tap water is controlled to be turned on and off by the solenoid valve to the constant flow valve. Sent. The constant flow valve is connected to the mixing unit, and the cleaning agent from the cleaning agent supply port is added thereto. Although not shown, the pump device 2 is provided with a tube pump (ironing pump) which is arranged between the cleaning agent supply port and the mixing unit and whose speed can be controlled. By the tube pump, the cleaning agent 4 is added to the mixing unit and diluted in a desired ratio. The cleaning liquid obtained by diluting is supplied to the dipping tank 1 from the outlet. In the figure, the arrow from below the pump device 2 indicates this.

In this example, the power source (not shown) of the pump device 2 is taken from the dishwasher 3. In the figure, the line connecting the pump device 2 and the dishwasher 3 shows this. The pump device 2 operates when the switch for starting the washing of the dishwasher 3 is turned on, pumps up the cleaning agent 4 and releases the solenoid valve of the water supply port connected to the tap water to release tap water at a constant flow rate valve. Sent to. The cleaning agent 4 and tap water are mixed in a mixing unit to obtain a cleaning liquid. The cleaning liquid thus obtained is discharged from the outlet of the pump device 2 and supplied to the immersion tank 1 in which the tableware 5 is housed.
The pump device 2 can be set so as to stop the discharge after discharging a certain amount of the cleaning liquid. The immersion tank 1 is provided with an overflow discharge port 6 so that the dirt 7b and the like can be overflowed and discharged by the injection of the cleaning liquid. The tableware 5 immersed in the immersion tank 1 for a predetermined time can be washed by the dishwasher 3.

As described above, in the present invention, since the fresh cleaning liquid is constantly supplied to the immersion tank in relation to the predetermined operation of the dishwasher, the pretreatment of the dishes in the immersion tank is very efficiently and effectively performed. It can be carried out. Further, since oil stains or the like floating on the immersion medium in the immersion tank can be discharged from the immersion tank while overflowing in conjunction with the supply of the cleaning liquid, the immersion medium can be kept clean.

1: Immersion tank 2: Pump device 3: Dishwasher 4: Cleaning agent 5: Dishware 6: Overflow discharge ports 7a and 7b: Dirt 8: Immersion medium

Claims (14)

A dishwashing system comprising a washing unit for washing dishes and a dish immersion unit provided separately from the washing unit,
The dipping unit includes a dipping tank that contains dishes and a dipping medium, and a pump device that sends a cleaning liquid to the dipping tank,
The pump device is a pump device operable according to a predetermined operation of the cleaning unit,
Dishwashing system. The dishwashing system according to claim 1, wherein the pump device is a pump device that can be activated by turning on an operation switch of the cleaning unit. 3. The dishwasher according to claim 1, wherein the pump device includes a cleaning liquid introducing unit, a diluting water introducing unit, a mixing unit that mixes the cleaning liquid and the diluting water into a cleaning liquid, and a cleaning liquid discharging unit. system. The immersion unit includes control means for controlling the operation of the pump device, and the control means controls the pump device so that the operation is stopped when the pump device sends a predetermined amount of cleaning liquid. The dishwashing system according to claim 1. The dishwashing system according to claim 4, wherein the predetermined amount is 1% or more and 5% or less of a maximum capacity in which the immersion tank does not overflow. The dishwashing system according to any one of claims 1 to 5, wherein the dipping tank is provided with an overflow discharge port capable of discharging dirt floating in the dipping medium. A method of washing dishes by a dishwashing system comprising a washing unit for washing dishes and a dishing unit provided separately from the washing unit,
The immersion unit includes an immersion tank for dishes and a pump device for sending a cleaning liquid to the immersion tank,
Place the dishes in the cleaning unit, and put the immersion medium containing water and the dishes in the immersion tank,
Activating the pump device according to a predetermined operation of the cleaning unit to send a cleaning liquid to the immersion unit,
How to wash dishes. The method of cleaning dishes according to claim 7, wherein the pump device is actuated when cleaning of the cleaning unit is started to send a cleaning liquid to the immersion unit. The method for cleaning dishes according to claim 7 or 8, wherein the pump device mixes the cleaning liquid and the diluting water to prepare the cleaning liquid. The tableware according to any one of claims 7 to 9, wherein an overflow discharge port is provided in the immersion tank, and dirt floating in the immersion medium is discharged from the immersion tank due to overflow of the immersion medium. Cleaning method. The said overflow is a washing|cleaning method of the tableware in any one of Claims 7-10 produced by sending the said washing|cleaning liquid to the said immersion tank. The method of cleaning dishes according to any one of claims 7 to 11, wherein the pump device is controlled so that the pump device stops feeding the cleaning liquid when the pump device feeds a predetermined amount of the cleaning liquid to the immersion tank. The dishwashing method according to claim 12, wherein the predetermined amount is 1% or more and 5% or less of a maximum capacity in which the overflow does not occur in the immersion tank. The dishwashing method according to any one of claims 7 to 13, wherein the dishwasher dipped in the dipping medium for a predetermined time is subjected to washing by a washing unit.

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