JP2002291681A - Hot-water supply unit for dish washing and drying machine, and dish washing and drying system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce running costs and to shorten entire dish washing time with respect to a hot-water supply unit for dish washing and drying machine and a dish washing and drying system, with which dishes are washed and dried while being stored in a washing tub. SOLUTION: A hot-water supply unit 50 for a dish washing and drying machine has a hot-water supply pipe 52 for supplying the hot water of a prescribed temperature, a water supply pipe 54 for supplying the cold water of an ordinary temperature, an outflow pipe 56 for joining the downstream sides of the hot-water supply pipe 52 and the water supply pipe 54 and connecting them to a water supply/hot-water supply pipe of a dish washing and drying machine 1, and control mechanisms (60, 62, 64, 70, 72, and 80) for making water flow out of the outflow pipe 56 after switching it to hot water, cold water or intermediate temperature thereof corresponding to each of dish washing processes in the dish washing and drying machine 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply unit for a dishwasher / dryer for supplying hot water to a dishwasher / dryer in which dishes are stored in a washing tank for washing and drying, and a dishwashing / drying system using the same.

[0002]

2. Description of the Related Art Dishwashers for washing dishes provided for meals are widely used not only for business purposes but also for general households. The dishwasher dries hot water containing a cleaning agent at a predetermined pressure onto the dishes arranged in the cleaning tank, and rinses the dishes by washing off the oil and the remainder of the dishes attached to the dishes. When the dishwashing is completed, warm air is circulated through the dishes in the washing tank to dry the washed dishes.

[0003] There are two types of dishwashers and dryers: an external type and a built-in type. Generally, an external dishwasher has a water supply pipe for supplying water for washing or a hot water supply pipe for supplying hot water branched from a kitchen tap or a hot water tap, and a washing liquid after washing the dish. Since the drainage pipe to be discharged is connected to the sink (sink), it is often placed near the worktop next to the sink. On the other hand, the built-in type dishwasher is provided with a dedicated water supply / drain pipe, and is used by being incorporated in an arbitrary position of a storage section provided below the system kitchen.

[0004]

In both the external type and the built-in type dishwasher, a water supply connection system in which cold water is supplied into a washing tank or a hot water connection system in which hot water boiled by a water heater is supplied. One of the methods.

[0005] In the water supply connection system, cold water at about the same temperature as room temperature is supplied from a water supply pipe into the washing tank. The cold water stored in the cleaning tank together with the detergent is heated by a built-in electric heater and is heated to a predetermined temperature. For example, since the detergent contains an enzyme that acts at about 60 ° C., the washing water in the washing tank is finally raised to about 60 ° C. by a built-in electric heater.

Cleaning is performed by spraying a cleaning liquid at a predetermined temperature by an electric heater onto the dishes in the cleaning tank. When the cleaning is completed, the process proceeds to a rinsing step after draining. Cold water equivalent to room temperature is again supplied from the water supply pipe and stored in the washing tank.
In the rinsing, the temperature of the rinsing water is not particularly problematic, and therefore, heating by the built-in electric heater is not performed, and cold water of about 20 ° C. is used as it is.

When the rinsing is completed, finally, the process proceeds to the heating rinsing step. In the heating rinsing, rinsing is performed by spraying high-temperature water of about 70 ° C. to 80 ° C. onto tableware in the washing tank. By heating and rinsing, the tableware can be easily dried in the subsequent drying step, and a sterilizing effect due to high temperature can be obtained. In the heating rinsing, since cold water equivalent to room temperature supplied from the water supply pipe is stored in the washing tank, the cold water is heated to about 70 ° C. to 80 ° C. by the built-in electric heater. I have.

The above is the outline of the dishwashing operation of the conventional dishwasher using the water supply connection system. Since cold water is used in the water supply connection method, it takes a considerable time to raise the temperature of the cold water to a predetermined temperature by the built-in electric heater. For this reason, there is a problem that the entire dishwashing time cannot be shortened. Furthermore, since the means for heating cold water is only an electric heater, there is a problem that it is difficult to reduce the cost required for washing dishes due to an increase in the electricity cost required to obtain hot water having a predetermined temperature.

On the other hand, in the hot water supply connection system, hot water at a temperature set on the water heater side is supplied from the hot water supply pipe into the washing tank. If the set temperature on the water heater side is set to, for example, 60 ° C., 60 ° C. hot water is stored in the washing tank and the washing operation can be started immediately without using the built-in electric heater in the washing step. For this reason, the step of heating cold water by the built-in electric heater is omitted, so that the dishwashing time can be shortened. Further, for example, when a gas water heater is used, hot water can be supplied at a lower cost than when an electric heater is used, so that the cost required for washing dishes can be reduced.

However, in this conventional hot water supply connection method, the temperature of the hot water supplied to the dishwasher cannot be set on the dishwasher side but on the water heater side.
Even in the rinsing step that does not require high-temperature water, hot water of about 60 ° C. is supplied. In this respect, there is a problem that energy for boiling hot water in the water heater is wasted and unnecessary cost is generated. In the case of heating and rinsing, 60
It is necessary to use a built-in electric heater to raise the temperature of hot water of 70 ° C. to about 70 ° C. to 80 ° C. However, there is a problem that the cleaning time becomes longer by the heating operation and the electricity cost increases. Occurs.

After all, in both the conventional water supply connection method and the hot water supply connection method, water (hot water) having a temperature suitable for each step of washing dishes (washing step, rinsing step, heating rinsing step, etc.).
There is a problem that is not supplied. As a result, there are problems that running costs cannot be reduced and the entire dishwashing time cannot be reduced.

An object of the present invention is to provide a hot water supply unit for a dishwasher / dryer and a dishwashing / drying system using the same, which can reduce running costs and shorten the entire dishwashing time.

[0013]

The object of the present invention is to merge a hot water supply pipe to which hot water of a predetermined temperature is supplied, a water supply pipe to which cold water of a normal temperature is supplied, and the downstream side of the hot water supply pipe and the water supply pipe. An outflow pipe connected to the water supply / hot water supply pipe of the dishwasher / dryer, and a control mechanism for switching to the hot water or the cold water and flowing out of the outflow pipe in accordance with each step of the dishwashing process in the dishwasher / dryer. This is achieved by a hot water supply unit for a dishwasher, characterized by having a hot water supply unit.

In the hot water supply unit for a dishwasher according to the present invention, the control mechanism has a valve section for switching between the hot water and the cold water to flow out of the outflow pipe, and a control section for controlling the valve section. It is characterized by the following.

In the hot water supply unit for a dishwasher according to the present invention, the valve unit is provided in the hot water supply pipe, and a first valve for controlling the supply of the hot water is provided in the water supply pipe, and the cold water is provided in the water supply pipe. And a second valve for controlling the supply.

In the hot water supply unit for a dishwasher according to the present invention, the control mechanism has a temperature control section for mixing the cold water with the hot water, controlling the temperature of the hot water, and discharging the hot water from the outflow pipe. It is characterized by being.

In the hot water supply unit for a dishwasher according to the present invention, the temperature adjusting section adjusts a flow rate of the hot water or the cold water to at least one of the hot water supply pipe and the water supply pipe to adjust the temperature of the hot water. The control valve is provided.

[0018] In the hot water supply unit for a dishwasher / dryer according to the present invention, the temperature control section has a temperature detection section for detecting a temperature of the cold water.

In the hot water supply unit for a dishwasher according to the present invention, hot water having a temperature different from the hot water of the hot water supply pipe is supplied, and another hot water supply pipe joining the downstream side of the hot water supply pipe and the water supply pipe is further provided. Wherein the valve section is provided on the another hot water supply pipe and has a third valve for controlling the supply of the hot water having the different temperature.

In the hot water supply unit for a dishwasher according to the present invention, a water flow switch for detecting a flow of water in the outflow pipe is provided.

In the hot water supply unit for a dishwasher according to the present invention, the control unit recognizes a start time of each of the dishwashing steps based on an output signal of the water flow switch.

The above object is also achieved in a dishwashing / drying system for washing and drying dishes, in which the dishes are stored in a washing tank for washing and drying, and a hot water supply unit for the dishwasher / dryer according to the present invention. This is achieved by a dishwashing and drying system characterized by having the following.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A hot water supply unit for a dishwasher and a dishwashing and drying system using the same according to one embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side sectional view showing a state in which a built-in dishwasher and a hot water supply unit for a dishwasher according to the present embodiment are connected to each other in a storage section of a built-in kitchen. The dishwasher 1 is housed under, for example, a built-in stove 4 built in the upper part of the cabinet 2.

A space for accommodating tableware (not shown) placed in a tableware basket 22 is provided in the washing tank 20 of the dishwasher / dryer 1. A water supply / hot water supply pipe 35 for supplying cold or hot water for cleaning into this space is connected to the cleaning tank 20 via a water supply valve 34. Tableware to be washed is placed on a tableware basket 22 and carried into the washing tank 20 from the door 24. A rotating arm 28 having a spray nozzle 26 for spraying cold or hot water toward the tableware is rotatably mounted below the tableware basket 22 stored in the washing tank 20.

Further, cold water or hot water stored at the bottom of the washing tank 20 is pumped below the washing tank 20, and
A water supply / hot water supply pump 30 that supplies cold water or hot water to the injection nozzle 26 via a pipe in the inside 8 is attached. A garbage filter 23 that captures garbage that has adhered to tableware is attached to a supply port of cold water or hot water of the water supply / hot water supply pump 30. Further, a drainage pump 32 for discharging cleaning water after cleaning is attached below the cleaning tank 20. The cleaning liquid drained by the drain pump 32 is a drain pipe 3
6 to the outside.

Further, the dishwasher 1 is provided with a drying fan 38 for introducing outside air into the washing tank 20 and an electric heater (not shown) for drying the dishes after washing the dishes. Above the door 24, a steam outlet 40 for discharging steam 42 generated in the washing tank 20 at the time of washing or drying the dishes is provided.

Next, the schematic structure of a hot water supply unit for a dishwasher according to the present embodiment will be described with reference to FIG. The hot water supply unit 50 for the dishwasher according to the present embodiment includes a hot water supply pipe 52 connected to the water heater 100 and supplied with hot water at 80 ° C., and a water supply pipe 54 connected to a water supply pipe and supplied with cold water at room temperature. And a two-system inlet pipe (52,
54), and a single outflow pipe 56 connected to the water supply / hot water supply pipe 35 of the dishwasher 1 and supplying water of a predetermined temperature to the dishwasher 1.

The hot water supply pipe 52 and the water supply pipe 54 join at the downstream side and are connected to an outflow pipe 56. An electromagnetic valve (first valve) 60 for controlling the start and stop of the supply of hot water of 80 ° C. is provided in the middle of the hot water supply pipe 52. In the middle of the water supply pipe 54, a solenoid valve (second valve) for controlling the supply and stop of cold water.
62 are provided. The opening and closing of these electromagnetic valves 60 and 62 are controlled by a command (control signal) from the control unit 80.

The hot water supply pipe 52 and the water supply pipe 54 are joined downstream of the solenoid valves 60 and 62 and connected to an outflow pipe 56. A control valve 64 is provided between the solenoid valve 62 of the water supply pipe 54 and the junction of the outflow pipe 56 to adjust the flow rate of the cold water to adjust the temperature of the hot water. The control valve 64 controls the control unit 80
A plurality of stages of opening / closing amount control can be performed between the fully opened state and the fully closed state by a command (control signal) from the controller, whereby the amount of cold water flowing through the water supply pipe 54 can be adjusted.

A temperature detector 70 is mounted on the upstream side of the water supply pipe 54. The temperature detecting section 70 has a temperature detecting element such as a thermistor, and measures the temperature of the cold water flowing in the water supply pipe 54 and outputs the measured temperature to the control section 80. The control unit 80 obtains the amount of cold water flowing from the water supply pipe 54 to the outflow pipe 56 based on the detected temperature of the cold water from the temperature detection unit 70 so that the hot water supplied to the dishwasher 1 has the target temperature. The opening / closing amount of the control valve 64 is controlled according to.

In the structure shown in FIG.
Can be omitted so that the control valve 64 also has a function as a second valve. In the configuration of FIG. 1, a control valve 64 may be attached to the hot water supply pipe 52 to control the flow rate of hot water.

In the middle of the outflow pipe 56, a water flow switch 72 for detecting the flow of water in the pipe is provided. The water flow switch 72 controls the water supply / discharge of the dishwasher 1 in the outflow pipe 56.
When the flow of water flowing to the hot water supply pipe 35 is detected, the control unit 80
A water flow detection signal.

In the control unit 80, a process pattern of a washing process determined for each maker or model of the dishwasher 1
It is stored in advance before construction. The washing process pattern is, for example, the first time of the water flow detection signal = 60 ° C. hot water supply (pre-wash), the second time = 60 ° C. hot water supply (main wash), the third time = normal temperature water supply (rinse 1), the fourth time = It is described as normal temperature water supply (rinse 2), 5th time = 80 ° C. hot water supply (heating rinse).

The control unit 80 controls the opening and closing of the solenoid valves 60 and 62 each time a water flow detection signal is input from the water flow switch 72 based on the stored cleaning process pattern.
4 is controlled. For example, when the water supply valve 34 of the dishwasher 1 is opened to generate water flow in the outflow pipe 56 and the “first time” water flow detection signal is output from the water flow switch 72, the control unit 80 starts the cleaning process. Based on the description of the pattern, it is determined that the temperature is “60 ° C. hot water supply”, and the solenoid valves 60 and 62 are determined.
And outputs a command to open the control valve 64 by a predetermined amount.
As a result, a predetermined amount of the 80 ° C. hot water supplied from the water heater 100 to the hot water supply pipe 52 and the cold water supplied to the water supply pipe 54 are mixed to generate 60 ° C. hot water, and the water supply / hot water supply pipe is discharged from the outflow pipe 56. It is supplied to the dishwasher 1 via 35.

When a predetermined amount of hot water is accumulated, the dishwasher 1
Is closed, and the supply of hot water is stopped. Similarly, every time the “n-th” water flow detection signal is output from the water flow switch 72, the control unit 80 controls the solenoid valves 60 and 62 and the control valve 64 based on the description of the cleaning process pattern. In each of the washing steps, cold water or hot water at an appropriate temperature is supplied to the dishwasher / dryer 1.

The hot water supply unit 50 for a dishwasher according to the present embodiment described above includes a hot water supply pipe 52 to which hot water of a predetermined temperature is supplied and a water supply pipe 54 to which cold water of normal temperature is supplied.
And the downstream side of the hot water supply pipe 52 and the water supply pipe 54 are joined,
The outlet pipe 56 connected to the water supply / hot water supply pipe 35 of the dishwasher / dryer 1 and the outlet pipe 56 switched to hot water or cold water or an intermediate temperature thereof in accordance with each step of the dishwashing process in the dishwasher / dryer 1. Control mechanism (60,
62, 64, 70, 72, and 80).

In the hot water supply unit 50 for a dishwasher / dryer according to the present embodiment, the control mechanism switches between hot water and cold water to flow out from the outflow pipe 56 (60, 62).
And a control unit 80 that controls the valve unit. The valve unit is provided on the hot water supply pipe 52 and controls the supply of hot water (a first valve (electromagnetic valve 60)), and the water supply pipe 54 is provided with a second valve (electromagnetic valve 62) that controls the supply of cold water. And

Further, in the hot water supply unit 50 for a dishwasher / dryer according to the present embodiment, the control mechanism has a temperature control section that mixes cold water with hot water to adjust the temperature of the hot water to flow out of the outlet pipe 56. I have. The temperature control part is a hot water supply pipe 5
2 or at least one of the water supply pipes 54 is provided with a control valve 64 for adjusting the flow rate of hot water or cold water to adjust the temperature of the hot water. Further, the temperature adjustment unit has a temperature detection unit 70 that detects the temperature of the cold water.

The hot water supply unit 50 for a dishwasher and dryer according to the present embodiment is provided with a water flow switch 72 for detecting the flow of water in the outflow pipe 56. , The start time (switching time) of each step of the dishwashing step is recognized.

Next, the dishwashing operation of the dishwasher / dryer 1 (dishwashing / drying system) using the hot water supply unit 50 for a dishwasher / dryer according to the present embodiment will be described with reference to FIG. 1 and FIG. First, the pre-washing step (a) will be described. Tableware basket 22 with doors 24 opened and tableware placed
Is carried into the washing tank 20. The door 24 is closed, the cleaning mode is selected from an operation panel (not shown), and the operation switch is pressed.

As a result, the water supply valve 34 is opened to generate water flow in the outflow pipe 56 of the dishwasher hot water supply unit 50, and the “first” water flow detection signal is output from the water flow switch 72 to the control unit 80. Is done. Based on the description of the cleaning process pattern, the control unit 80 determines that the temperature is “60 ° C. hot water supply”, and outputs a command to open the solenoid valves 60 and 62 and open the control valve 64 by a predetermined amount. As a result, a predetermined amount of 80 ° C. hot water supplied from the water heater 100 to the hot water supply pipe 52 and cold water supplied to the water supply pipe 54 are mixed with each other, and 60 ° C. hot water is generated from the outflow pipe 56 to the water supply / hot water supply pipe. It is supplied to the dishwasher 1 via 35. When a predetermined amount of hot water is stored, the water supply valve 34 of the dishwasher 1 is closed, and the supply of hot water is stopped.

When a predetermined amount of hot water is supplied to the bottom of the washing tank 20, the water supply / hot water supply pump 30 starts. At this time, since hot water at a predetermined temperature of about 60 ° C. is supplied, heating of the hot water by an electric heater (not shown) is unnecessary, and pre-washing time and power consumption can be saved. The pre-washing hot water is jetted from the jet nozzle 26 by the pressure of the hot water supplied by the water supply / hot water supply pump 30, and the rotating arm 28 is rotated to spray the pre-washing hot water on the tableware placed on the tableware basket 22. Prewashing is performed. The pre-washing hot water spouted into the washing tank 20 drops while removing dirt and garbage attached to the tableware to some extent, filters the garbage and large dirt with the garbage filter 23, and returns to the water supply / hot water supply pump 30 again. Supplied and pressurized,
It is injected from the injection nozzle 26. When the predetermined pre-washing is completed, the hot water for pre-washing is drained by the drain pump
Is discharged to the outside.

Next, the main washing step (b) will be described. After the pre-washing step is completed, the water supply valve 34 is opened to generate a flow of water in the outflow pipe 56 of the hot water supply unit 50 for the dishwasher / dryer, and a “second” water flow detection signal is sent from the water flow switch 72 to the control unit 80. Is output. At the same time, a window (not shown) of the cleaning agent inlet of the cleaning agent inlet 10 provided on the inner wall of the door 24 opens, and the cleaning agent is injected into the cleaning tank 20. The control unit 80 determines “60 ° C. based on the description of the cleaning process pattern.
It determines that it is "hot water supply", and outputs a command to open the solenoid valves 60 and 62 and to open the control valve 64 by a predetermined amount. This allows
Hot water of 60 ° C. generated by mixing a predetermined amount of 80 ° C. hot water supplied from the water heater 100 to the hot water supply pipe 52 and cold water supplied to the water supply pipe 54 is supplied from the outflow pipe 56 via the water supply / hot water supply pipe 35. And supplied to the dishwasher 1. When a predetermined amount of hot water is stored, the water supply valve 34 of the dishwasher 1 is closed, and the supply of hot water is stopped.

The cleaning agent dissolves in the warm water stored at the bottom of the cleaning tank 20 and becomes a cleaning liquid. At this time, since hot water at a predetermined temperature of about 60 ° C. is supplied, heating of hot water by an electric heater (not shown) is unnecessary, and cleaning time and power consumption can be reduced. When the cleaning liquid reaches a predetermined amount, the water / hot water supply pump 30 starts. The cleaning liquid is injected from the injection nozzle 26 by the pressure of the cleaning liquid supplied by the water supply / hot water supply pump 30 and the rotating arm 28 is rotated to spray the cleaning liquid onto the tableware placed on the tableware basket 22 for cleaning. The cleaning liquid spouted into the cleaning tank 20 falls while dropping dirt and garbage attached to the tableware, and the garbage filter 2
At 3, residual vegetables and large dirt are filtered, supplied again to the water supply / hot water supply pump 30, pressurized, and injected from the injection nozzle 26. When the predetermined cleaning step is completed, the cleaning liquid is discharged to the outside through the drain pipe 36 by the drain pump 32.

Next, one rinsing step (c) will be described. After completion of the main washing process, the water supply valve 34 is opened to generate water flow in the outflow pipe 56 of the dishwasher hot water supply unit 50, and the “third” water flow detection signal is sent from the water flow switch 72 to the control unit 80. Is output. Based on the description of the cleaning process pattern, the control unit 80 determines that the supply is "normal temperature water supply", and outputs a command to close the solenoid valve 60, open the solenoid valve 62, and fully open the control valve 64. Thereby, the cold water supplied to the water supply pipe 54 is supplied from the outflow pipe 56 to the dishwasher 1 via the water supply / hot water supply pipe 35. When a predetermined amount of cold water is stored, the water supply valve 34 of the dishwasher 1 is closed, and the supply of cold water is stopped.

When a predetermined amount of cold water for rinsing is newly supplied to the bottom of the washing tank 20, the water supply / hot water supply pump 30 starts.
Rinsing cold water is injected from the injection nozzle 26 by the pressure of the rinsing water supplied by the water supply / hot water supply pump 30 to perform rinsing. When the rinsing is completed, the cold water for rinsing is discharged to the outside through the drain pipe 36 by the drain pump 32.

This rinsing step is repeated one or more times. In the present embodiment, an example having two rinsing steps is shown, and the same operation is performed in the next two rinsing steps (d). After one rinsing step, the water supply valve 34 is opened and the dishwasher / dryer is opened. The flow of water is generated in the outflow pipe 56 of the hot water supply unit 50, and the “fourth” water flow detection signal is output from the water flow switch 72 to the control unit 80. The subsequent operations in the second rinsing step (d) are the same as those in the first rinsing step (c), and thus description thereof will be omitted.

Next, the heating and rinsing step (e) will be described. After completion of the two rinsing steps, the water supply valve 34 is opened to generate water flow in the outflow pipe 56 of the dishwasher hot water supply unit 50, and the “fifth” water flow detection signal is sent from the water flow switch 72 to the control unit 80. Is output. The control unit 80 determines that the temperature is “80 ° C. hot water supply” based on the description of the cleaning process pattern, and outputs a command to open the solenoid valve 60 and completely close the solenoid valve 62 and the control valve 64. Thereby, the hot water of 80 ° C. supplied from the water heater 100 to the hot water supply pipe 52 is supplied from the outflow pipe 56 to the dishwasher / dryer 1 via the water supply / hot water supply pipe 35.
Supplied to When a predetermined amount of hot water is stored, the water supply valve 34 of the dishwasher 1 is closed, and the supply of hot water is stopped.

The hot water for rinsing newly stored at the bottom of the washing tank 20 is maintained at a predetermined water temperature of around 80 ° C., and is not heated by an electric heater (not shown). For this reason, the heating rinsing time and power consumption can be saved. If necessary, a window of a rinsing liquid inlet (not shown) provided on the inner wall of the door 24 is opened, and a rinsing liquid (dry finish liquid) is supplied into the cleaning tank 20. The rinsing liquid is dissolved in the warm water supplied to the bottom of the washing tank 20 and becomes warm water for rinsing. Cleaning tank 2
When a predetermined hot water for rinsing is supplied to the bottom part, the water supply / hot water supply pump 30 starts. The hot water for rinsing is injected from the injection nozzle 26 by the pressure of the hot water for rinsing supplied by the water supply / hot water supply pump 30, and the heating rinsing is performed. When the heating and rinsing is completed, the warm water for rinsing is discharged to the outside through the drain pipe 36 by the drain pump 32.

Next, the drying step (f) will be described.
The drying fan 38 is rotated to introduce outside air into the washing tank 20, and the dishes are dried by an electric heater (not shown), thereby completing the entire dishwashing process. In this drying step, since the heating and rinsing in the previous step is performed with warm water of 80 ° C., it is possible to dry quickly, thereby shortening the drying time and reducing the operation time of the electric heater to save power consumption. Can be.

As described above, only the water supply is performed in the rinsing 1 and the rinsing 2 steps which do not require rinsing with hot water, so that the energy which has conventionally been heated by the water heater can be reduced by about 50%. .

According to the present embodiment, it is possible to easily switch between hot water supply and water supply and warm water at an intermediate temperature in each of the dishwashing steps. As a result, the conventional hot water supply system supplies hot water in the entire cleaning process. As a result, it is possible to significantly improve the point that unnecessary energy consumption cannot be suppressed, and further, the use of the electric heater is reduced as much as possible. A dishwashing and drying system with reduced power consumption can be constructed.

Next, a modification of the hot water supply unit for a dishwasher according to the present embodiment will be described with reference to FIG. Components having the same functions and functions as those of the dishwasher hot water supply unit shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In this modification, for example, 60 ° C. and 8
Using a water heater 100 that can supply two types of hot water at 0 ° C,
A dishwasher hot water supply unit 50 according to the present modification is installed between the water heater 100 and the dishwasher 1,
Water supply, 60 ° C hot water supply, and 80 ° C hot water supply are switched.

The hot water supply unit 50 for a dishwasher / dryer has a hot water supply pipe 52 connected to the hot water supply 100 and supplied with 80 ° C. hot water, a hot water supply pipe 53 supplied with 60 ° C. hot water, and a water pipe. And a water supply pipe 54 to which normal-temperature cold water is supplied.
4), and a single outflow pipe 56 connected to the water supply / hot water supply pipe 35 of the dishwasher 1 and supplying water of a predetermined temperature to the dishwasher 1.

The hot water supply pipes 52, 53 and the water supply pipe 54 join at the downstream side and are connected to an outflow pipe 56. An electromagnetic valve 60 for controlling the start and stop of the supply of hot water of 80 ° C. is provided in the middle of the hot water supply pipe 52. 60 ° C in the middle of hot water supply pipe 53
An electromagnetic valve 65 for controlling the start and stop of the supply of hot water is provided. An electromagnetic valve 62 for controlling the supply and stop of cold water is provided in the middle of the water supply pipe 54. The opening and closing of these solenoid valves 60, 62, 65 are controlled by a command (control signal) from the control unit 80. In the middle of the outflow pipe 56, a water flow switch 72 for detecting the flow of water in the pipe is provided.

The controller 80 controls the opening and closing of the solenoid valves 60, 62, 65 based on the stored cleaning process pattern. For example, in the case of pre-washing of 60 ° C. hot water, the water supply valve 34 of the dishwasher 1 is opened to generate water flow in the outflow pipe 56, and the “first” water flow detection signal is output from the water flow switch 72. The control unit 80 determines that the temperature is “60 ° C. hot water supply” based on the description of the cleaning process pattern,
5 and outputs a command to close the solenoid valves 60 and 62. Thereby, the 60 ° C. hot water supplied from the water heater 100 to the hot water supply pipe 52 is supplied from the outflow pipe 56 to the dishwasher 1 via the water supply / hot water supply pipe 35. When a predetermined amount of hot water is stored, the water supply valve 34 of the dishwasher 1 is closed, and the supply of hot water is stopped.

For example, in the case of rinsing at room temperature, the water supply valve 34 of the dishwasher 1 is opened to generate water flow in the outflow pipe 56, and the “x-th” water flow detection signal is output from the water flow switch 72. Then, the control unit 80 determines that it is “water supply” based on the description of the cleaning process pattern, and outputs a command to open the solenoid valve 62 and close the solenoid valves 60 and 65. As a result, the cold water at normal temperature in the water supply pipe 54
6 is supplied to the dishwasher 1 via a water / hot water supply pipe 35. When a predetermined amount of hot water is stored, the water supply valve 34 of the dishwasher 1 is closed, and the supply of hot water is stopped.

Further, for example, in the case of heating and rinsing at a hot water supply of 80 ° C., the water supply valve 34 of the dishwasher 1 is opened to open the outflow pipe 5.
When a water flow is generated in the water flow 6 and the “final” water flow detection signal is output from the water flow switch 72, the control unit 80 determines that the water supply is “80 ° C. hot water supply” based on the description of the cleaning process pattern. , And outputs a command to open the solenoid valve 60 and close the solenoid valves 62 and 65. Thereby, the 80 ° C. hot water supplied from the water heater 100 to the hot water supply pipe 52 is supplied from the outflow pipe 56 to the dishwasher 1 via the water supply / hot water supply pipe 35.

In this way, every time the "n-th" water flow detection signal is output from the water flow switch 72, the control unit 80 controls the solenoid valve 60, based on the description of the washing process pattern.
62 and 65 are controlled, and cold water or hot water of an appropriate temperature is supplied to the dishwasher 1 in each step of the washing process.

The hot water supply unit 50 for a dishwasher according to the present embodiment described above has a hot water supply pipe 52 to which hot water of a predetermined temperature is supplied and a water supply pipe 54 to which cold water of normal temperature is supplied.
And the downstream side of the hot water supply pipe 52 and the water supply pipe 54 are joined,
The outlet pipe 56 connected to the water supply / hot water supply pipe 35 of the dishwasher / dryer 1 and the outlet pipe 5 switched to hot water (80 ° C.) or cold water in accordance with each step of the dishwashing process in the dishwasher / dryer 1.
Control mechanism (60, 62, 72, 80) flowing out of 6
And

Further, in the hot water supply unit 50 for a dishwasher according to the present embodiment, hot water (60 ° C.) different from the hot water (80 ° C.) of the hot water supply pipe 52 is supplied, and the hot water supply pipe 52 and the water supply pipe 54 are supplied. Further has another hot water supply pipe 53 that merges with the downstream side of the hot water supply pipe, and the valve section has a third valve (electromagnetic valve 65) that is provided in another hot water supply pipe 53 and controls the supply of hot water having a different temperature. ing. The configuration of this modification is shown in FIG.
As compared with the configuration of the present embodiment shown in FIG.
8. There is an advantage that the configuration is simplified because the bypass control valve 64 and the temperature detector 70 are not required.

According to this modification, hot water supply (60 ° C., 80 ° C.) and water supply can be easily switched in each of the dishwashing steps. As a result, the conventional hot water supply system supplies hot water in the entire cleaning process. As a result, it is possible to significantly improve the point that unnecessary energy consumption cannot be suppressed, and further, the use of the electric heater is reduced as much as possible. A dishwashing and drying system with reduced power consumption can be constructed.

The present invention is not limited to the above embodiment, but can be variously modified. For example, in the above embodiment, the built-in type dishwasher / dryer 1 has been described as an example. However, the present invention is not limited to this, and is of course applicable to a tabletop type dishwasher / dryer used by placing it on a kitchen. is there.

In the above-described embodiment, the first (pre-wash) and the second
Hot water is supplied at the time of the detection of running water for the first time (main washing), water is supplied at the time of detecting the third and fourth times (rinsing 1, rinsing 2), and at the time of flowing water detection at the fifth time (heating and rinsing). The washing mode for supplying hot water has been described as an example,
The present invention is not limited to this.

Each operation course (standard, speedy, saving, careful, etc.) according to each manufacturer and model of dishwasher
The cleaning pattern corresponding to the time may be stored in a storage device in the control unit 80, and may be used by switching.
In addition, a small memory card reader may be attached to the control unit 80 so that various types of washing patterns can be written on the small memory card so that it can easily cope with a change in the type of dishwasher / dryer used. Good.

Further, in the above embodiment, FIGS.
Are used to illustrate two types of hot water supply units for dishwashers and dryers, but the present invention is not limited to these. In short, the present invention merges a hot water supply pipe to which hot water of a predetermined temperature is supplied, a water supply pipe to which cold water of normal temperature is supplied, a hot water supply pipe and a downstream side of the water supply pipe, to form a water supply / hot water supply pipe of the dishwasher. A wide area including all the hot water supply units for a dishwasher / dryer having a connecting outflow pipe and a control mechanism for switching to hot water or cold water to flow out of the outflow pipe in accordance with each step of the dishwashing process in the dishwasher / dryer. It is a concept.

[0067]

As described above, according to the present invention, it is possible to appropriately switch between water supply and hot water supply to the dishwasher in the dishwashing process, and thus the running costs including the electricity usage fee can be achieved. And the dishwashing time can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a schematic configuration of a hot water supply unit for a dishwasher and a dishwasher according to an embodiment of the present invention.

FIG. 2 is a diagram showing a cleaning operation procedure of the dishwashing and drying system according to one embodiment of the present invention.

FIG. 3 is a sectional view showing a modification of the hot water supply unit for a dishwasher according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dishwasher 2 Cabinet 4 Built-in stove 20 Washing tank 22 Tableware basket 24 Door 26 Injection nozzle 28 Rotating arm 30 Water supply / hot water supply pump 32 Drain pump 34 Water supply valve 35 Water supply / hot water supply pipe 36 Drain pipe 38 Drying fan 40 Steam discharge port 42 Steam 50 Dishwasher hot water supply unit 52, 53 Hot water supply pipe 54 Water supply pipe 56 Outflow pipe 60, 62, 65 Solenoid valve 64 Control valve 70 Temperature detecting unit 72 Flowing water switch 80 Control unit 100 Water heater

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B082 BD01 3L073 AA18 AB07 AC01 AC06 AD01 AE04 AE06

Claims (10)

[Claims] 1. A hot water supply pipe to which hot water of a predetermined temperature is supplied, a water supply pipe to which cold water of normal temperature is supplied, and the hot water supply pipe and a downstream side of the water supply pipe are joined to supply water / hot water for a dishwasher / dryer. Dishwashing and drying, comprising: an outflow pipe connected to a pipe; and a control mechanism that switches to the hot water or the cold water and flows out from the outflow pipe in accordance with each step of the dishwashing process in the dishwasher / dryer. Hot water supply unit. 2. The hot water supply unit for a dishwasher / dryer according to claim 1, wherein the control mechanism switches between the hot water and the cold water to flow out of the outflow pipe, and a control section that controls the valve section. And a hot water supply unit for a dishwasher. 3. The hot water supply unit for a dishwasher according to claim 2, wherein the valve portion is provided in the hot water supply pipe and controls the supply of the hot water.
And a second valve provided in the water supply pipe for controlling the supply of the cold water.
And a hot water supply unit for a dishwasher. 4. The hot water supply unit for a dishwasher / dryer according to claim 2, wherein the control mechanism adjusts the temperature of the hot water by mixing the cold water with the hot water and causing the hot water to flow out of the outlet pipe. A hot water supply unit for a dishwasher, comprising an adjusting unit. 5. The hot water supply unit for a dishwasher / dryer according to claim 4, wherein the temperature adjustment unit adjusts a flow rate of the hot water or the cold water to at least one of the hot water supply pipe and the water supply pipe. A hot water supply unit for a dishwasher, comprising a control valve for adjusting a temperature. 6. The dishwasher / dryer according to claim 4, wherein the temperature controller has a temperature detector for detecting the temperature of the cold water. For hot water supply unit. 7. A hot water supply unit for a dishwasher / dryer according to claim 3, wherein hot water having a temperature different from that of the hot water of the hot water supply pipe is supplied, and the hot water and the downstream side of the water supply pipe merge with each other. The hot water supply unit for a dishwasher / dryer, further comprising a hot water supply pipe, wherein the valve unit includes a third valve provided on the another hot water supply pipe and controlling supply of the hot water having the different temperature. 8. The dishwasher / dryer hot water supply unit according to claim 1, further comprising a water flow switch for detecting a flow of water in the outflow pipe. Hot water supply unit. 9. The hot water supply unit for a dishwasher according to claim 8, wherein the control unit recognizes a start time of each of the dishwashing steps based on an output signal of the water flow switch. A hot water supply unit for the dishwasher. 10. A dishwashing and drying system for washing and drying dishes, a dishwasher and dryer for storing the dishes in a washing tank, washing and drying the dishes, and the dishwasher according to any one of claims 1 to 9. A dishwashing / drying system comprising a hot water supply unit for a dryer.