JP2000279360A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dishwasher capable of obtaining desired temperature characteristic about wash water for washing process, rinse water for rinse process and dry air for drying process. SOLUTION: The dishwasher is provided with a control means 27 controls to sequentially execute a washing process that is to wash objects to be washed, a rinse process that is to rinse the objects and a drying process that is to dry the objects. A heating equipment 17 heats up each of the wash water, the rinse water and the dry air with a thermal medium that is supplied from a heat source equipment 18. A temperature sensor 24 detects the temperature of wash water and rinse water. A dishwasher has the control means 27, the heating equipment 17 and the temperature sensor 24. The control means 27 controls the supply of thermal medium supplied from the source equipment 18. The control means 27 transmits to the heat source equipment 18 about the temperature information of thermal medium that is supplied to the heating equipment 17 to be heated at the desired temperature for the wash water, rinse water and dry air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a dishwasher,
In particular, the present invention relates to a dishwasher that sequentially executes a washing step of washing an object to be washed, a rinsing step of rinsing the object to be washed with rinsing water, and a drying step of drying the object to be washed.

[0002]

2. Description of the Related Art In a conventional dishwashing machine, in a washing process, washing water is heated in order to easily remove dirt attached to an object to be washed such as tableware, and in a rinsing process, the washing water is heated in a drying process immediately after the washing water. The rinse water is heated so that the hot water remaining in the cleaning object can be easily evaporated and the drying processing of the object to be cleaned can be performed efficiently, and in the drying step, the drying air is provided at a high temperature, Further, the drying air is heated to accelerate the drying of the object to be cleaned. As the heating means, heating is performed using a heating medium such as hot water which is heated and supplied by a heat source device such as a water heater. With this heating method using a heating medium, it is possible to prevent the ambient temperature from becoming excessively high as compared with the case where an electric heater or the like is used.

[0003] The dishwasher having such a configuration is provided with control means for controlling the temperature of the washing water in the washing step, the rinsing water in the rinsing step, and the temperature of the drying air in the drying step. The heat source device is configured to supply a heating medium of a predetermined temperature to the heating means of the dishwasher, and the control means of the dishwasher performs a request for the heating medium and a request for the heating medium for the heat source device to stop ( For example, the temperature of the washing water, the rinsing water, and the drying air is controlled by igniting and extinguishing the heat source unit and opening and closing an on-off valve built in or attached to the heat source unit.

In such a dishwasher, when the outside air temperature is extremely low and the installation interval between the heat source machine and the dishwasher is large, the heating medium is cooled during the supply from the heat source machine to the dishwasher. A heating medium having a temperature lower than the temperature set by the heat source device is supplied to the heating means, and therefore, the washing water, the rinsing water, and the drying air are heated by the heating medium having the lower temperature. In a conventional dishwasher, the washing time of the washing step, the rinsing time of the rinsing step and the drying time of the drying step are set in consideration of such a decrease in the temperature of the heating medium to a certain extent. A relatively long time is set as the drying time.

[0005]

However, in the above-described dishwasher, the heating means for heating the washing water or the like uses the heating medium supplied by heating by the heat source device as a heat source. Since the control means of the washing machine transmits the request for the heating medium and the stop of the request to the heat source machine, the following problems exist.

In general, a heat source unit supplies a heating medium to a plurality of terminal devices (for example, a dishwasher, an air conditioner, a floor heater, and the like) in an intermittent state, respectively. When operated at the same time, the total amount of heat required of each terminal device may exceed the amount of heat that can be supplied by the heat source device. In such a case, the temperature of the heating medium supplied to the heating means of the dishwasher, which is one of the plurality of terminal devices, falls to some extent below the target temperature, and a relatively long time is set as the cleaning time (rinsing time). Despite being performed, the cleaning water (rinsing water) does not rise to a predetermined cleaning temperature (predetermined rinsing temperature), and the cleaning effect of the object to be cleaned is reduced. The drying effect in the drying step following the step is reduced).

Further, since the dishwasher only heats and stops the heating of the heat source machine with a heating medium, it is difficult to precisely control the temperatures of the washing water, the rinsing water and the drying air. There is a problem that it is difficult to obtain a desired rising characteristic of the temperature.

An object of the present invention is to provide a dishwasher capable of obtaining desired temperature characteristics with respect to washing water in a washing step, rinsing water in a rinsing step, and drying air in a drying step.

[0009]

SUMMARY OF THE INVENTION The present invention provides a cleaning step of cleaning an object to be cleaned with cleaning water, a rinsing step of rinsing the object to be cleaned with rinsing water, and a drying step of drying the object to be cleaned by a drying air. And control means for controlling the sequential execution of the steps, heating means for respectively heating the washing water, rinsing water and drying air by a heating medium supplied from a heat source device, and detecting the temperatures of the washing water and the rinsing water. And a temperature detector, wherein the controller controls the supply of the heating medium from the heat source device, and controls the temperature of the washing water and the rinse water based on the detection information of the temperature detector. A washing machine, wherein the control means controls the washing water to have a predetermined washing temperature in the washing step, and the rinsing water to have the predetermined rinsing temperature in the final rinsing operation of the rinsing step; In such dry air is heated to the required streets, with respect to the heat source unit, characterized in that it is configured to transmit the temperature information of the heating means f the supplied heating medium.

According to the present invention, the control means of the dishwasher controls the supply of the heating medium supplied from the heat source device, and the heating means controls the washing water, the rinsing water and the drying air by the heating medium supplied from the heat source device. Heat. This control means transmits the temperature information of the heating medium to the heat source device, and by transmitting the temperature information in this manner, it is possible to set the temperature of the heating medium supplied from the heat source device to the heating means in each step. Thus, the temperature characteristics of the washing water, the rinsing water and the drying air can be made as required. As the heating medium, for example, hot water can be used.

Further, in the present invention, the heat source unit has a function of supplying a heating medium having a first predetermined temperature and a high temperature heating medium having a second predetermined temperature higher than the first predetermined temperature. ,
In the final rinsing operation of the rinsing step, the heat source device supplies the high-temperature heat medium to the heating means.

According to the present invention, since the heat source device has a function of supplying the heating heat medium and the high-temperature heat medium to the heating means, the control means of the dishwasher is provided in each of the washing step, the rinsing step and the drying step. Heating medium or high-temperature heating medium can be supplied to the heating means based on the temperature information transmitted from the heating means. Further, in the final rinsing operation, the high-temperature heat medium is supplied to the heating means, so that the temperature of the rinsing water in the final rinsing operation can be increased, thereby improving the drying efficiency of the hot water remaining on the dishes and the like in the subsequent drying step. Can be increased.

[0013] In the present invention, the control means may extend the cleaning operation when the temperature detected by the temperature detecting means does not exceed the predetermined cleaning temperature before a predetermined cleaning time elapses in the cleaning step. The cleaning time is set.

According to the present invention, if the temperature of the cleaning water does not become higher than the predetermined cleaning temperature by the elapse of the predetermined cleaning time, the temperature of the cleaning water in the normal cleaning operation of the cleaning process is low. Means set extended cleaning time,
The object to be cleaned can be cleaned as required by extending the operation time of the cleaning step.

Further, in the present invention, the control means is configured to supply the heating heat medium to the heating means in a normal cleaning operation in a cleaning step, and to control the high temperature in the extended cleaning operation in the cleaning step. The temperature information is transmitted to the heat source device so that a heating medium is supplied to the heating means.

According to the present invention, the heating medium is usually supplied to the heating means of the dishwasher in the cleaning operation, but the high-temperature heating medium is supplied to the heating means in the extended cleaning operation. In addition, the cleaning effect in the extended cleaning operation can be further enhanced.

In the present invention, the control means may execute the extended rinsing operation when the temperature detected by the temperature detecting means does not exceed the predetermined rinsing temperature before a predetermined final rinsing time elapses in the final rinsing operation. It is characterized in that an extended rinsing time to be performed is set.

According to the present invention, when the temperature of the rinsing water does not become equal to or higher than the predetermined rinsing temperature before the predetermined final rinsing time has elapsed, the temperature of the rinsing water in the final rinsing operation is low. By setting the extended rinsing time and performing the extended rinsing operation, the temperature of the object to be cleaned can be increased, thereby increasing the drying efficiency in the subsequent drying step.

In the present invention, the control means transmits the temperature information to the heat source device so that the heating medium is supplied to the heating means in the extension rinsing operation. I do.

According to the present invention, in the extended rinsing operation, the heating heat medium is supplied to the heating means of the dishwasher, whereby the high-temperature heat medium is supplied to the heating means for a long time. Can be prevented.

Further, in the present invention, the control means counts an operation work time after starting operation of the dishwasher.
It is characterized by having a timer, a second timer for counting the time of the washing step and the rinsing step, and a third timer for counting the supply time of the high-temperature heat medium.

According to the present invention, the control means has first to third timers, and the operation time after the start of operation of the dishwasher is counted by the first timer, so that the operation time can be managed. it can. Further, the second timer counts the time of the cleaning step and the rinsing step, so that the cleaning time and the rinsing time can be managed. Further, the third timer counts the time of supplying the high-temperature heat medium, so that the supply of the high-temperature heat medium can be performed. Time can be managed.

In the present invention, if the temperature of the rinsing water in the final rinsing operation by the temperature detecting means becomes equal to or higher than the predetermined rinsing temperature before the final rinsing time elapses, the control means may perform the following steps. (1) selecting the drying mode, and selecting the second drying mode in the drying step when the temperature of the rinsing water of the final rinsing operation by the temperature detecting means does not exceed the predetermined rinsing temperature even after the final rinsing time has elapsed. It is characterized by doing.

According to the present invention, when the detected temperature of the rinsing water in the final rinsing operation becomes equal to or higher than the predetermined rinsing temperature before the final rinsing time elapses, it is determined that the final rinsing operation has been performed at a sufficiently high temperature and the next drying step is performed. The first drying mode is selected. In addition, if the detected temperature of the rinsing water does not become equal to or higher than the predetermined rinsing temperature even after the lapse of the final rinsing time in the final rinsing operation, the second drying mode is performed in the next drying step assuming that the final rinsing operation has not been performed sufficiently high. Selected. Thus, by selecting the drying mode of the drying step according to the temperature of the rinsing water in the final rinsing operation, the object to be cleaned can be dried as required in the subsequent drying step.

Further, in the present invention, the control means, when the temperature of the rinsing water of the final rinsing operation by the temperature detecting means does not become higher than the predetermined rinsing temperature even after the lapse of the final rinsing time. And stopping the count of the third timer, switching the heating medium supplied to the heating means from the high-temperature heating medium to the heating heating medium, and setting an extended rinsing time for performing the extended rinsing operation. A second drying mode is performed.

According to the present invention, when the detected temperature of the rinsing water in the final rinsing operation does not exceed the predetermined rinsing temperature even after the lapse of the final rinsing time, counting to the first and third timers is stopped. The control of the dishwasher is switched by, a heating medium is supplied to the heating means,
Thus, it is possible to prevent the high-temperature heat medium from being continuously supplied for a long time. At this time, the control means sets an extended rinsing time for extending the final rinsing operation,
By performing the extended rinsing operation during the extended rinsing time, the rinsing operation of the object to be cleaned can be performed as required.

[0027] Further, in the present invention, when the temperature of the rinsing water detected in the final rinsing operation by the temperature detecting means becomes equal to or higher than the predetermined rinsing temperature before the lapse of the final rinsing time, the control means may control the final rinsing time. After the lapse of time, the process proceeds to a drying step, wherein the first drying mode is performed, and the operation of the dishwasher is stopped based on the count value of the first timer.

According to the present invention, if the detected temperature of the rinsing water is equal to or higher than the predetermined rinsing temperature in the final rinsing operation, the first drying mode is selected in the drying process, and the operation of the dishwasher is controlled by the first timer. Is done. Therefore, the operation time of the dishwasher can be managed by the first timer, and the operation mode is such that the object to be washed is washed, rinsed and dried within the set operation time, and the user who uses the dishwasher is operated. Convenience of use can be achieved.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a dishwasher according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram showing an entire embodiment of a dishwasher according to the present invention, and FIG. 2 is a perspective view showing a state where an opening / closing door of the dishwasher shown in FIG. 1 is opened. 3 is a perspective view showing a state in which an opening / closing door of the dishwasher in FIG. 1 is closed, and FIG. 4 is a partial perspective view showing an arrangement state of a hot water heater in the dishwasher in FIG. FIG. 2 is a block diagram showing a control system of the dishwasher of FIG.

Referring to FIGS. 1 to 3, the illustrated dishwasher 50 has a substantially rectangular box-shaped main body housing 1.
An opening / closing door 2 is provided on the front surface of the main body housing 1 so as to swing freely about a horizontal axis (not shown) provided at the lower end of the front surface. Inside the main body housing 1, a washing tank 3 for washing an object to be washed such as tableware is provided. The front surface of the cleaning tank 3 is widely opened for inserting and removing the object to be cleaned D (see FIG. 2). When the door 2 is closed, the cleaning tank 3 is closed by the inner surface of the door 2. .

As shown in FIG. 1, upper and lower two side surfaces of a closed cleaning space K formed by the cleaning tank 3 are provided.
A support rail 4 is provided on the step (only the support rail 4 provided on one upper side surface is shown in FIG. 2). A lower net cage 5a and an upper net cage 5b are slidably and detachably supported by these support rails 4. Objects to be washed (not shown) such as plates, bowls and other tableware are accommodated in the net baskets 5a and 5b.

In the cleaning tank 3, a lower spray nozzle 6a, a middle spray nozzle 6b, and an upper spray nozzle 6c are provided.
The lower injection nozzle 6a is provided below the lower net cage 5a, the middle injection nozzle 6b is provided between the lower net cage 5a and the upper net cage 5b, and the upper injection nozzle 6c is provided above the upper net basket 5b. . At the time of cleaning, the objects to be cleaned are net baskets 5a, 5
b, and these net baskets 5a, 5b
It is stored inside. The washing water (or rinsing water) from the lower ejection nozzle 6a is ejected upward from a large number of ejection holes 7 formed on the upper surface thereof toward the object to be washed accommodated in the lower net cage 5a, and is ejected in the middle. The cleaning water (rinse water) from the nozzle 6b is ejected upward and downward from a large number of injection holes 7 formed on the upper and lower surfaces of the nozzle 6b toward the objects to be cleaned accommodated in the upper net cage 5a and the lower net basket 5b. Further, the washing water (or rinsing water) from the upper ejection nozzle 6c is ejected downward from a plurality of ejection holes 7 formed on the lower surface thereof toward the object to be washed accommodated in the upper net cage 5b. The object to be cleaned is washed (rinsed).

The dishwasher 50 includes a water supply passage 8 for supplying washing water (rinsing water) to the washing tank 3,
A discharge path 9 for discharging the cleaning water (rinse water) in the inside to the outside, and a cleaning water for supplying the cleaning water (rinse water) stored in the cleaning tank 3 to each of the ejection nozzles 6a, 6b, 6c. A water supply path 10 is provided, and the water supply path 8, the drainage path 9 and the cleaning water supply path 10 are connected to the cleaning tank 3 in the apparatus housing 1.

One end of the water supply channel 8 is arranged so as to open into the washing tank 3 in the vicinity of an intermediate position in the vertical direction of the washing tank 3, and the other end is provided with a water supply source (not shown) such as tap water. It is connected to the. The water supply passage 8 is provided with a manually operated opening / closing valve 11 and an electromagnetic water supply valve 12 controlled by a control signal. When both the manual on-off valve 11 and the electromagnetic water supply valve 12 are opened, water (used as washing water and rinsing water) from a water supply source is supplied into the washing tank 3 through the water supply passage 8.

One end of the discharge path 9 is opened at the bottom of the washing tank 3, and a discharge pump 13 is provided near one end of the discharge path 9. The drainage pump 13 is used cleaning water (rinse water) through a concave portion 14 formed at the bottom of the cleaning tank 3.
And the suctioned washing water (rinse water) is supplied to the washing tank 3
Is discharged out of the system from a discharge portion 9b through a backflow preventing vertical path portion 9a provided on the lateral side of.

In the washing tank 3 of the dishwasher 50, a water level sensor 15 is provided. The water level sensor 15 detects whether or not the water level of the cleaning water (rinsing water) stored in the cleaning tank 3 has reached a preset water level. When the water level in the washing tank 3 reaches the set water level, the water level sensor 15 is turned on, and a detection signal from the water level sensor 15 is sent to a control unit (described later). When the set water level is reached, the electromagnetic water supply valve 12 is closed, and the supply of water through the water supply passage 8 is automatically stopped.

A circulating pump 16 is provided in the washing water supply path 10. The feed passage 10 is provided with a suction feed passage portion 10a for sucking washing water (rinsing water) stored in the washing tank 3 from the concave portion 14 and washing water (rinse) from the circulation pump 16 to the lower ejection nozzle 6a. Water), and a first ejection feed path portion 10 b for feeding water), and an upper ejection nozzle 6 from the circulation pump 16.
c, and a second ejection supply path portion 10c for supplying cleaning water (rinsing water) to the second ejection path c.

The lower ejection nozzle 6a is supported rotatably about a rotation axis (not shown) extending in the vertical direction at the intermediate portion in the longitudinal direction.
Are rotatably supported by the upper net cage 5b with respect to a rotation axis extending vertically. The ejection nozzles 6a, 6b, and 6c are arranged such that the ejection holes 7 eject cleaning water diagonally upward in opposite directions, and the lower ejection nozzle 6a and the middle ejection nozzle 6b The washing water (rinsing water) is washed by the reaction of the jetting power of the (rinsing water) itself in a predetermined direction at a low speed around the rotation axis, and the jet nozzles 6a and 6b rotate in this manner. The object is sprayed to every corner, and the object to be cleaned is washed (rinsed) as required. The upper ejection nozzle 6c is provided fixed to the washing tank 3 and ejects washing water (rinse water) downward. Further, a funnel-shaped water supply section 6b1 is provided in the middle ejection nozzle 6b, and washing water (rinse water) ejected from the upper ejection nozzle 6c is supplied to the middle ejection nozzle 6b through the water supply section 6b1.

As shown in FIG. 4, a filter F is provided in the concave portion 14 provided at the bottom of the cleaning tank 3 for receiving debris such as residual vegetables generated by the cleaning action. The filter F has a double mesh structure of a coarse mesh and a fine mesh. During the washing (rinsing) operation, the washing water (rinsing water) passes through the coarse mesh filter after passing through the coarse mesh filter. Configured to pass,
On the other hand, at the time of drainage, the flow of the wash water (rinse water) is reversed. By flowing the washing water (rinsing water) in this manner, the debris attached to the inner surface of the fine mesh filter is easily removed and discharged to the outside. The filter F is placed along the inner peripheral edge of the concave portion 14, and can be easily attached and detached as needed.

In the embodiment, between the bottom of the washing tank 3 and between the bottom surface of the washing tank 3 and the lower ejection nozzle 6a, the washing water in the washing step is heated and the rinse water in the final rinsing operation of the rinsing step is heated. Further, a heating heater 17 is provided as heating means for heating the air in the cleaning tank 3 in the subsequent drying step to heat and dry the object to be cleaned. The heater 17 includes a hot water heater that is heated and dried by supplying hot water heated by an external heat source device 18 of a gas combustion type equipped with a combustion burner (not shown) through a hot water supply path 19. It is configured. This external heat source unit 18 can be
The hot water can also be supplied to a terminal device (not shown) such as an indoor heater other than the heater 17. In this embodiment, as described later, the heat source device 18 can generate and supply the first predetermined temperature, for example, about 80 ° C. normal warm water, that is, a heating heat medium, to the heater 17, and Second temperature higher than the predetermined temperature
A predetermined temperature, for example, high-temperature water of about 90 ° C., that is, a high-temperature heat medium can be generated and supplied to the heater 17. The temperature of the heat medium supplied from the heat source device 18 is controlled by control means (described later). Is selected based on the temperature information transmitted from.

The dishwasher 50 further includes a blower 26 as a drying fan. The blower 26 is located in the air passage 5
1, and sucks external air and supplies the air to the cleaning tank 3 through the air passage 51. This blower has a hot water heater 1
During drying by heating 7 and during air drying after heating and drying, the drying air is supplied into the washing tank 3.

As shown in FIG. 4, the heater 17 is arranged in a bent state over a wide area at the bottom of the cleaning tank 3, and is constituted by a pipe through which a heating medium can flow. As shown in FIG. 1, the heating medium from the heat source unit 18 is supplied to the heater 17 through the medium supply path 19, flows through the heater 17, returns to the heat source unit 18 through the medium return path 20, and Circulated through the heater 17. An electromagnetic on-off valve 22 is disposed in the medium supply path 19, and when the on-off valve 22 is in an open state, a heating medium from the heat source device 18 is supplied to the heater 17. The cleaning water (rinsing water) in the cleaning tank 3 is heated.

A temperature sensor 24 (FIG. 1) as temperature detecting means for detecting the temperature in the cleaning tank 3 is provided inside the cleaning tank 3.
And a door switch 25 for detecting the opening and closing of the door 2 (FIG. 2)
Are provided. The door switch 25 is turned on (closed) when the door 2 is in the closed state, and detects that the door 2 is in the closed state.

In this dishwasher 50, a washing step with washing water, a rinsing step consisting of a normal rinsing operation with normal temperature rinsing water or a warm rinsing water and a final rinsing operation with high temperature rinsing water, and a heating drying air and a normal drying air Are sequentially performed, and in this connection, the control means 27 for controlling the operation of each of the above-described steps is further provided.
Command input means 2 for commanding control information to control means 27
8 are provided. The control means 27 is composed of, for example, a microcomputer, and the command input means 28 is provided on an operation section 28a provided on the upper outer surface of the door 2, as shown in FIG. (OFF)
, A cleaning operation start switch 30 for instructing the start of the cleaning operation, a manually operated finishing agent input selection switch 31 for selecting whether or not the finishing agent is input, and a time setting switch for changing and setting the drying time. 32 (consisting of a drying time extension switch for changing the setting to extend the drying time and a drying time shortening switch for changing the setting so as to shorten the drying time) and a cleaning mode for setting the cleaning mode A setting switch 64 is included. The operation unit 28a further includes a notification buzzer 33 as a means for notifying the end of the work to the auditory sense, a notification lamp 34 as a means for visually notifying the end of the work, and the like.

Next, referring to FIG.
0, the signals from the temperature sensor 24, the door switch 25, the water level sensor 15 and the command input means 28 are sent to the control means 27, which controls the electromagnetic water supply based on these input signals. Valve 12, on-off valve 2
2. The operation of the heat source device 18, the drain pump 13, the circulation pump 16, the blower 26, the notification buzzer 33 and the notification lamp 34 is controlled.

In this embodiment, the control means 27
First to third timers 53, 54, 55, first to third memories 56, 57, 58, operation mode storage means 59, extension time setting means 60, temperature information storage means 61, and drying mode selection Means 62. The first timer 53 counts the operation time after the start of the operation of the dishwasher 50, and the second timer 54 performs the cleaning step (including the extended cleaning operation when extended) and the rinsing step (normal rinsing operation,
(Including the final rinsing operation and the extended rinsing operation when extended). This second timer 54
Further, the time of the heating and blowing operation and the time of the drying and blowing operation when the second drying mode is selected in the drying step are counted. Further, the third timer 55 counts the supply time when the high-temperature heat medium is supplied from the heat source device 18.

The first memory 56 stores the cleaning time in the cleaning process (in this embodiment, the time for the normal cleaning operation, ie, the predetermined cleaning time is, for example, 13 minutes, and the time for the extended cleaning operation, ie, the extended cleaning time is, for example, 10 minutes). And the rinsing time in the rinsing step (in this embodiment, the time for the normal rinsing operation, that is, for example, 1 minute as the normal rinsing time, the time for the final rinsing operation, for example, 1 minute as the final rinsing time, and the time for the extended rinsing operation, The extended rinsing time is, for example, 7 minutes, and the drying time in the drying step (in this embodiment, the supply stop time of the high-temperature heat medium when the first drying mode is selected, in other words, the time relating to the heating and drying time in the heating and drying operation is, for example, 30 minutes, and the operation stoppage time of the dishwasher 50 at this time, in other words, 65 as the time for the drying time
Minutes, or the time of the heating and drying operation when the second drying mode is selected, that is, as the heating and drying time, for example, 20 minutes.
And the time of the air drying operation at this time, that is, 30 minutes as the air drying time, for example. Further, the second memory 57 stores a predetermined cleaning temperature in the cleaning step, for example, 60 ° C., and a predetermined rinsing temperature in the final rinsing operation of the rinsing step, for example, 75 ° C. The third memory 58 stores work operations in a drying mode in the drying process, in this embodiment, the first and the drying modes.

The operation mode storage means 59 of the control means 27 stores various operation modes of the dishwasher 50. In this embodiment, three operation modes of a standard course, a strong course and a saving course are stored. I have. For example, in the standard course, one cleaning operation in the cleaning process, three normal rinsing operations in the rinsing process, and one final rinsing operation are performed. In the strong course, for example, one cleaning operation in the cleaning process and one normal rinsing operation are performed. Four rinsing operations and one final rinsing operation are performed, and in the saving course, for example, one cleaning operation in the cleaning process, two normal rinsing operations in the rinsing process, and one final rinsing operation are performed. In these courses, the heating drying time and the blast drying time in the drying step are appropriately set according to each course.

Further, the extension time setting means 60 sets whether or not to extend the washing based on the temperature of the washing water in the washing step, and based on the temperature of the rinsing water in the final rinsing operation of the rinsing step. Set whether to extend the rinsing work. The temperature information storage means 61 stores temperature information in the cleaning step (normal cleaning operation and extended cleaning operation), the rinsing step (normal rinsing operation, final rinsing operation and extended rinsing operation), and the drying step (heating drying operation and blast drying operation). The temperature information stored in the temperature information storage means 61 is transmitted from the control means 27 to the external heat source device 18, and the heat source device 18 transmits a heating medium having a temperature set based on the temperature information to the dishwasher. 50 heaters 17 are supplied. Further, the drying mode selecting means 62 selects which of the first and second drying modes stored in the third memory 58 is to be performed according to conditions described later.

Next, the overall control operation of the control means 27 will be outlined with reference to FIGS. Prior to starting the cleaning operation, first, the opening and closing door 2 is manually opened to store items to be cleaned (not shown) such as tableware in the cleaning tank 3 in the net baskets 5a and 5b. Preferably, a detergent dedicated to dishwashing is supplied into the washing tank 3. Thereafter, the door 2 is closed and the door switch 25 is closed (ON) (step S-1). Then, the power switch 29 is closed (ON) (step S-2), and a cleaning course is selected (step S-3). In this embodiment, the standard course is automatically set when the mode setting switch 64 is not operated, and the mode setting switch 64 is manually operated when setting the strong course or the saving course. When the cleaning course is set in this way, the operation procedure of the set cleaning course is read from the operation mode storage means 59, and the control means 27 controls the operation of various components according to the read operation procedure as described later. . In the above-described embodiment, three courses are set in advance as cleaning courses. However, other courses, such as a course for drying only, may be appropriately set. In the following description, a so-called standard dishwashing operation similar to the case where the standard course is selected will be described. Further, when a finish such as a rinse is to be fed, the finish feed switch 31 is used.
Is closed (ON). Thereafter, when the washing operation start switch 30 is closed (ON) (step S-4), the operation of the dishwasher 50 starts.

When the operation of the dishwasher 50 starts, the process proceeds to step S-5, where the count of the first timer 53 starts, and the first timer 53 counts the operation time (for example, the remaining time) of the operation of the dishwasher 50. Perform a count. First timer 5
The count of 3 may be displayed on an operation panel such as the operation unit 28a by an appropriate LED display mechanism or the like.

When the counting by the first timer 53 is started, the process proceeds to step S-6, and the drainage operation is performed prior to the start of the cleaning process. In the draining operation, the control means 27 operates the drain pump 13 to completely discharge the residual water that may have accumulated in the dishwasher 50 out of the system. This makes it possible to perform optimal cleaning with a predetermined amount of cleaning agent and finishing agent by a predetermined amount of cleaning water supplied thereafter. In this drainage operation, for example, the drainage operation time is stored in the first memory 56,
The operation is performed by operating the drainage pump 13 during the stored drainage operation time. When no water remains in the washing tank 3, this draining operation may be omitted.

After this draining operation, a cleaning step is performed in step S-7, a rinsing step is then performed in step S-8, and then a drying step is performed in step S-9. Then, the object to be cleaned in the cleaning tank 3 is washed, and the object to be cleaned is washed, rinsed, and dried.

Next, the cleaning step in step S-7 will be described in detail with reference to FIG. 7 together with FIG. At the start of the cleaning step, the control means 27 reads out the temperature information of the normal cleaning work in the cleaning step from the temperature information stored in the temperature information storage means 61, and transmits the read temperature information to the heat source device 18 (step S7-1). ). In this embodiment, the control means 27 sends temperature information (for example, about 80 ° C.) to the heat source device 18 so that the heat source device 18 heats the cleaning water used in the cleaning process to a predetermined cleaning temperature, for example, 60 ° C.
Information for supplying a heating medium having a first predetermined temperature of ℃)
To communicate.

Next, the process proceeds to step S7-2, where water is supplied to the cleaning tank 3. At the time of this water supply, the control means 27
The electromagnetic water valve 12 is actuated by a signal from the
The washing water is supplied into the washing tank 3 through the washing tank. When using the dishwasher 50, the manual on-off valve 11 is kept open. When the water level in the cleaning tank 3 reaches a desired set water level, the water level sensor 15 detects the cleaning water and closes (ON). Then, the control means 27 closes the electromagnetic water supply valve 12 based on the signal from the water level sensor 15, and the water supply operation is completed when the electromagnetic water supply valve 12 is closed.

Next, the process proceeds to step S7-3, in which the circulation pump 16 is operated, and the washing water in the washing tank 3
Jets are sprayed from a, 6b, and 6c toward the object to be cleaned, and the object to be cleaned is cleaned. At about the same time, the control unit 27 opens the on-off valve 22 and the heating medium from the heat source unit 18 is supplied to the heater 17 through the medium supply path 19 (step 7-4). At this time, based on the temperature information from the control means 27, the heat source device
The heating heater 17 heats the cleaning water in the cleaning tank 3 by exchanging heat with the heating medium. Then, the control means 27 controls the operation of the on-off valve 22 so that the temperature detected by the temperature sensor 24 becomes a predetermined cleaning temperature, for example, 60 ° C., and adjusts the supply state of the heating heat medium to the heater 17 while performing the cleaning operation. Is performed (step S7-5). Such a cleaning operation is performed for a predetermined cleaning time,
For example, the cleaning is performed until 13 minutes have elapsed, and after the predetermined cleaning time has elapsed, the process proceeds to step S7-8.

In step S7-8, it is determined whether or not the detected temperature of the temperature sensor 24 is equal to or higher than a predetermined cleaning temperature, for example, 60 ° C. It is determined that the cleaning operation has been completed, and the process proceeds to step S7-12. On the other hand, the temperature sensor 2
If the detected temperature in Step 4 is not higher than the predetermined cleaning temperature, it is determined that the cleaning operation has not been achieved with sufficiently high temperature cleaning water.
The count of the first timer 53 stops (step S7-
9) After that, the extension time setting means 60 sets the extension of the working time of the cleaning process, for example, an extension of 10 minutes (step S7-1).
0), extended cleaning work is performed. At the start of the extended cleaning work, the control means 27 reads out the temperature information of the extended cleaning work in the cleaning step from the temperature information stored in the temperature information storage means 61, and transmits the read temperature information to the heat source device 18 (step S7-). 11). In this embodiment, the control unit 27
Transmits temperature information (for example, information for supplying a high-temperature heat medium having a second predetermined temperature of about 90 ° C.) to the heat source device 18. In this way, the extended cleaning operation is performed for the extended cleaning time (step S7-12), and thereafter, step S7-1 is performed.
Proceed to 3. By performing the extended cleaning work in this way, it is possible to prevent poor cleaning of the object to be cleaned. Further, at this time, since the high-temperature heat medium of the second predetermined temperature is supplied to the heater 17, the temperature of the cleaning water increases, and the cleaning effect on the object to be cleaned can be further enhanced.

Steps S7-8 to S7-13
When the procedure proceeds to step S7-13 after the extension cleaning operation, the control means 27 stops the operation of the circulation pump 16, whereby the ejection of the washing water from the ejection nozzles 6a, 6b, 6c is terminated. Next, in step S7-14, the control means 27 closes the on-off valve 22, thereby stopping the supply of the heating medium to the heater 17 (step S7-14). The washing water inside is drained out of the system (Step S
7-15), the washing operation is completed in this manner.

In this cleaning step (normal cleaning operation and extended cleaning operation), the cleaning water jetted from the jet holes 7 of the jet nozzles 6a, 6b, 6c into a spray state is heated by the heater 17.
And heat is exchanged efficiently between them and the temperature rises.
Cleaning with cleaning water at a predetermined cleaning temperature of 0 ° C. is performed.

Next, the rinsing step of step S-8 will be described in detail with reference to FIGS. In the rinsing step, first, rinsing water such as tap water is supplied into the cleaning tank 3 via the water supply passage 8 (step S8-1), and then the circulation pump 16 is operated, and this operation is performed to obtain a desired normal rinsing time. For one minute, for example. When the normal rinsing operation is completed, the drain pump 13 is operated, and the cleaning tank 3 is operated.
The rinsing water in the interior is drained and the normal rinsing operation is thus performed. In this embodiment, the normal rinsing operation has been described as a rinsing operation using normal-temperature rinsing water. However, the rinsing water may be heated by the heater 17 to perform the normal rinsing operation using warm water. In such a case, at the start of the normal rinsing operation, temperature information from the control means 27, for example, temperature information for instructing to supply a heating medium having a first predetermined temperature is transmitted to the heat source device 18.

When the normal rinsing operation is completed in this way, the number of times of the normal rinsing operation is incremented by "1" in step S8-5, and then in step S8-6, based on the added value in step S8-4. It is usually determined whether the rinsing operation has been performed three times. Thus, steps S8-1 to S8-6 are repeatedly performed until the normal rinsing operation is performed three times. Then, when the normal rinsing operation is performed three times, step S
Proceeding to 8-7, the final rinsing operation is started.

At the start of the final rinsing operation, first, the control means 27 reads out the temperature information of the final rinsing operation of the rinsing step from the temperature information stored in the temperature information storage means 61,
The read temperature information is transmitted to the heat source device 18 (step S8-7). In this embodiment, the control means 27 transmits temperature information (for example, information for supplying a high-temperature heat medium having a second predetermined temperature of about 90 ° C.) to the heat source device 18. Next, in step S8-8, the supply of the rinsing water in the final rinsing operation is performed in the same manner, and the high-temperature heat medium of the second predetermined temperature is supplied from the heat source device 18 to the heater 17 almost at the same time. This heats the rinse water in the cleaning tank 3 (Step S8-9). In this final rinsing operation, a high-temperature heat medium is supplied to the heater 17, so that the temperature of the rinsing water rises quickly and rises to a high temperature. Can be shortened.

When the supply of the high-temperature heat medium from the heat source unit 18 starts, the third timer 55 starts counting (step S8-10), and the third timer 55 supplies the high-temperature heat medium to the third timer 55. Count the time. If the heat source device 18 generates and supplies the high-temperature heat medium for a long time, its durability may be reduced. Therefore, the third timer 55 manages this time to prevent the life from being shortened. Thereafter, in step S8-11, the circulation pump 16 is operated, and the final rinsing operation using the rinsing water heated by the heater 17 is performed.

In the final rinsing operation, as shown in FIG.
Using the temperature detected by the temperature sensor 24, it is determined whether or not the temperature of the final rinsing water has reached a predetermined rinsing temperature, for example, 75 ° C. or higher. If the temperature has exceeded the predetermined rinsing temperature, the process proceeds to step S8-13. If not, the process proceeds to step S8-17.

Steps S8-12 to S-13
Then, it is determined whether or not a predetermined final rinsing time, for example, one minute, has elapsed, and the above-described final rinsing operation is performed until the predetermined final rinsing time has elapsed. When the rinsing time has elapsed, it is determined that the object to be cleaned has been finally rinsed with sufficiently high-temperature rinsing water, and the process proceeds to step S8-14, where the operation of the circulation pump 16 is stopped. The rinsing water is drained (step S8-15), and the rinsing process ends in this way. When the temperature of the rinsing water in the final rinsing operation becomes sufficiently high in this way, the drying mode selecting means 62 selects the first drying mode, and performs the first drying mode according to the operation procedure read from the third memory 58 in the drying step. One drying mode is performed.

On the other hand, if the temperature detected by the temperature sensor 24 does not exceed the predetermined rinsing temperature and the final rinsing time, for example, one minute, elapses from step S8-12 to step S8-12.
The process proceeds to step S-18 via 8-17. In this case, counting is started from the start of the dishwasher operation (step S-
5) The counting by the first timer 53 and the counting from the start of the supply of the high-temperature heat medium are started (step S8-1).
0) The counting by the third timer 55 is stopped. As described later, in this case, the supply of the high-temperature heat medium from the heat source device 18 is stopped, and the supply of the high-temperature heat medium is switched to the supply of the heated heat medium.
The count of 3,55 stops.

In step S8-19, assuming that the final rinsing operation has not been performed at a sufficiently high temperature, the extension time setting means 60 sets an extension of the rinsing operation, for example, an extension of 7 minutes (step S8-19). An extended rinsing operation is performed. At the start of the extended rinsing work, the control means 27 reads out the temperature information of the extended rinsing work of the rinsing step from the temperature information stored in the temperature information storage means 61, and transmits the read temperature information to the heat source device 18 (step S8-). 20).
In this embodiment, the control means 27 transmits temperature information (for example, information for supplying a heating medium having a first predetermined temperature of about 80 ° C.) to the heat source device 18. In this way,
The extended rinsing operation for the extended rinsing time is performed (step S8-21), and when the extended rinsing time has elapsed, the operation of the circulation pump 16 is stopped and the extended rinsing operation is completed (step S8-22). Drainage is performed (step S8-23), and the rinsing step is completed in this way. If the temperature of the rinsing water is not sufficiently high, such extended rinsing operation can prevent poor rinsing of the object to be cleaned and prevent supply of the high-temperature heating medium for a long time. it can. In this case, the drying mode selection means 62 selects the second drying mode, and the second drying mode is performed according to the operation procedure read from the third memory 58 in the drying step.

Next, the drying process in the first drying mode will be described with reference to FIG. 10 together with FIG. In the drying step in the first drying mode, the control unit 27 controls the blower 2
6, the air from the outside is sent into the washing tank 3 through the air passage 51 (step S9-1). By the operation of the blower 26, the high-temperature heating medium is supplied to the heater 17 continuously from the final rinsing operation of the immediately preceding rinsing step, and the air in the cleaning tank 3 is heated by the high-temperature heating medium flowing through the heater 17, The object to be cleaned is heated and dried. Next, the process proceeds to step S9-2 to determine whether the count value of the third timer 55 counted from the start of the final rinsing operation of the immediately preceding rinsing step has passed a predetermined set time, for example, 30 minutes from the start. Is determined,
After the lapse of the predetermined set time, the on-off valve 22 is closed, and the supply of the high-temperature heat medium to the heater 17 ends, whereby the heating and drying operation in the drying step ends (step S9-3). By supplying the high-temperature heat medium to the heater 17 continuously from the final rinsing operation, the drying efficiency of the heating and drying operation can be increased. Further, by stopping the supply of the high-temperature heat medium by counting the predetermined set time of the third timer 55, it is possible to prevent the heat source device 18 from generating and supplying the high-temperature heat medium for a long time.

Thereafter, the process proceeds to step S9-4, in which the blow drying operation is performed by operating only the blower 26, and the count value of the first timer 53 has passed a set time, for example, 65 minutes from the start of the operation of the dishwasher 50. It is determined whether or not it has been done. Then, when 65 minutes have elapsed from the start of the operation of the dishwasher 50, the process proceeds to step S9-5, the operation of the blower 26 is stopped, the blow drying operation of the drying process is finished, and the drying process in the first drying mode is started. finish. After a predetermined time, for example, 10 seconds, after the completion of the drying process, the notification buzzer 33
Is activated, the notification buzzer 33 notifies that washing of the dishes has been completed as required, and then opens the power switch 29 (O
FF), the operation is finally ended.
In this way, by ending the washing of the dishwasher 50 based on the time from the start of washing, the work time for washing the dish can be easily grasped, and the convenience of use by the user is improved. Can be

Referring to FIG. 11 together with FIG.
The drying step in the drying mode will be described. At the start of the second drying mode, the control unit 27 reads out the temperature information of the heating and drying work in the drying step from the temperature information stored in the temperature information storage unit 61, and reads out the read temperature information. Is transmitted to the heat source device 18 (step S9-6). In this embodiment, the control means 27 transmits temperature information (for example, information for supplying a heating medium having a first predetermined temperature of about 80 ° C.) to the heat source device 18. Next, in step S9-7, a heating medium having a first predetermined temperature is supplied from the heat source device 18 to the heater 17, and the heater 17 heats the air in the cleaning tank 3. At about the same time, the blower 26 is operated, and external air is supplied into the cleaning tank 3 through the air passage 51, and the object to be cleaned is heated and dried.

When the heating and drying time, for example, 20 minutes, has elapsed after the start of the heating and drying step, the process proceeds from step S9-9 to step S9-10, where the on-off valve 22 is closed, and the heating and drying operation ends. After that, only the blower 26 operates, and the blast drying operation by the blower 26 is performed, and the blast drying operation is performed for the blast drying time, for example, 30 minutes. After the elapse of the blast drying time, the process proceeds to step S9-12, where the blower 2
The operation of Step 6 stops, the blow drying operation ends, and the drying process in the second drying mode ends. After this drying step,
After a lapse of a predetermined time, for example, 10 seconds, the notification buzzer 33 is activated to notify that cleaning of the object to be cleaned has been completed, and the power switch 29 is opened (OFF) to finally operate the dishwasher 50. To end.

As described above, by selecting the drying mode in the subsequent drying step in relation to the temperature of the cleaning water in the final rinsing operation, the object to be cleaned can be surely dried.

While the embodiment of the dishwasher according to the present invention has been described above, the present invention is not limited to such an embodiment, and various changes and modifications can be made without departing from the scope of the present invention. It is.

For example, in the illustrated embodiment, when the temperature of the rinsing water does not become equal to or higher than the predetermined rinsing temperature in the final rinsing operation of the rinsing step, an extended rinsing operation with a heating medium is performed. In place of such a configuration, a high-temperature heat medium at a second predetermined temperature is supplied to the heater 17 again to perform the first extended rinsing operation, and the temperature of the rinsing water in the first extended rinsing operation is reduced to the predetermined rinsing temperature. When the temperature is equal to or higher than the temperature, the first drying mode is performed in the drying process. On the other hand, when the temperature of the rinsing water does not become equal to or higher than the predetermined rinsing temperature in the first extended rinsing operation, steps S8 to S17 in FIG. 9 are performed. It may be.

Further, in the illustrated embodiment, the temperature of the heating medium supplied from the heat source device 18 is selected from two stages of a first predetermined temperature and a second predetermined temperature based on the temperature information of the heating medium. However, the present invention is not limited to this, and may be selected from three or more stages.

[0076]

According to the dishwasher of the first aspect of the present invention, the control means of the dishwasher transmits temperature information to the heat source machine, so that the temperature of the heating medium supplied to the heating means can be adjusted to a required value. Can be set according to the washing water,
The temperature characteristics of the rinsing water and the drying air can be made as required.

Further, according to the dishwasher of the second aspect of the present invention, a heating medium or a high-temperature medium can be supplied to the heating means based on the temperature information transmitted from the control means of the dishwasher. . In the final rinsing operation, since the high-temperature heat medium is supplied to the heating means, the temperature of the rinsing water in the final rinsing operation can be increased, and the drying efficiency of hot water remaining on tableware and the like in the subsequent drying step can be increased.

According to the dishwasher of the third aspect of the present invention, if the temperature of the washing water in the washing step is low, the extended washing operation is performed. Can be washed.

According to the dishwasher of the fourth aspect of the present invention, since the high-temperature heat medium is supplied to the heating means in the extended washing operation, the washing effect in the extended washing operation can be further enhanced.

According to the dishwasher of the fifth aspect of the present invention, when the temperature of the rinsing water in the final rinsing operation is low, the extended rinsing operation is performed. And the drying efficiency in the subsequent drying step can be increased.

According to the dishwasher of the sixth aspect of the present invention, since the heating medium is supplied to the heating means in the extended rinsing operation, the high-temperature heating medium is prevented from being supplied for a long time. can do.

According to the dishwasher of the seventh aspect of the present invention, since the control means has the first to third timers, the operation work time after the start of the operation of the dishwasher, the cleaning step and the rinsing step are eliminated. The time and the supply time of the high-temperature heating medium can be managed.

According to the dishwasher of the eighth aspect of the present invention, the first drying mode or the second drying mode is selected in the drying step in relation to the detected temperature of the rinsing water in the final rinsing operation. The object to be cleaned can be efficiently dried.

According to the dish dryer of the ninth aspect of the present invention, when the temperature of the rinsing water in the final rinsing operation is low, the control of the dish washer is switched, and the high-temperature heating medium is supplied to the heating means for a long time. It can be prevented from being continuously supplied across.

Further, according to the dish dryer of the tenth aspect of the present invention, when the temperature of the rinsing water is high in the final rinsing operation, the stoppage of the operation of the dishwasher is determined by the time from the start of the operation, and the dishwasher is stopped. The convenience of use for the user using the machine can be achieved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a dishwasher according to the present invention.

FIG. 2 is an overall perspective view showing a state where an opening / closing door of the dishwasher in FIG. 1 is opened.

FIG. 3 is an overall perspective view showing a state where an opening / closing door of the dishwasher in FIG. 1 is closed.

FIG. 4 is a partial perspective view showing an arrangement state of a heater of the dishwasher of FIG. 1;

FIG. 5 is a block diagram schematically showing a control system of the dishwasher of FIG. 1;

FIG. 6 is a flowchart showing a flow of an entire operation by the control system of FIG. 5;

FIG. 7 is a flowchart showing an operation of a cleaning step in the control system of FIG. 6;

FIG. 8 is a flowchart showing a first part of a rinsing step in the control system of FIG. 6;

FIG. 9 is a flowchart showing a latter part of a rinsing step in the control system of FIG. 6;

FIG. 10 is a flowchart showing a drying process in a first drying mode in the control system of FIG. 6;

FIG. 11 is a flowchart showing a drying process in a second drying mode in the control system of FIG. 6;

[Explanation of symbols]

 3 Cleaning Tank 6a, 6b, 6c Spout Nozzle 17 Heater 18 Heat Source Machine 24 Temperature Sensor 26 Blower 27 Control Means 50 Dishwasher 59 Operation Mode Storage Means 60 Extended Time Setting Means 61 Temperature Information Storage Means 62 Drying Mode Selection Means

Claims (10)

[Claims] 1. A cleaning step of cleaning an object to be cleaned with cleaning water, a rinsing step of rinsing the object to be cleaned with rinsing water, and a drying step of drying the object to be cleaned by a drying air. Control means for controlling the temperature of the washing water, rinsing water, and drying air by a heating medium supplied from the heat source device, and temperature detecting means for detecting the temperature of the washing water and the rinsing water. A dishwasher, wherein the control unit controls supply of a heating medium from the heat source unit, and controls a temperature of the wash water and the rinse water based on detection information of the temperature detection unit; Means are such that the washing water has a predetermined washing temperature in the washing step, the rinse water has a predetermined rinsing temperature in the final rinsing operation of the rinsing step, and a drying air is required in the drying step. To be heated as described, the relative heat source machine, dishwasher, characterized in that it is configured to transmit the temperature information of the heating means f the supplied heating medium. 2. The heat source unit has a function of supplying a heating medium having a first predetermined temperature and a high-temperature heating medium having a second predetermined temperature higher than the first predetermined temperature. The dishwasher according to claim 1, wherein in the final rinsing operation, the heat source device supplies the high-temperature heat medium to the heating means. 3. An extended cleaning time for performing an extended cleaning operation when the detected temperature detected by the temperature detecting means does not become equal to or higher than the predetermined cleaning temperature before a predetermined cleaning time elapses in the cleaning step. The dishwasher according to claim 2, wherein the dishwasher is used. 4. The control unit controls the heating medium to be supplied to the heating unit in a normal cleaning operation in the cleaning step, and controls the high-temperature heating medium in the extended cleaning operation in the cleaning step. The dishwasher according to claim 3, wherein the temperature information is transmitted to the heat source device so as to be supplied to the heating means. 5. An extended rinsing time for performing an extended rinsing operation when the temperature detected by the temperature detecting means does not become equal to or higher than the predetermined rinsing temperature before a predetermined final rinsing time elapses in the final rinsing operation. 3. The dishwasher according to claim 2, wherein: 6. The control unit transmits the temperature information to the heat source unit such that the heating medium is supplied to the heating unit in the extended rinsing operation. Dishwasher as described. 7. A first timer for counting an operation work time after the operation of the dishwasher has started, a second timer for counting times of the washing step and the rinsing step, and
The dishwasher according to any one of claims 1 to 6, further comprising a third timer that counts a high-temperature heating medium supply time. 8. The control unit, when the temperature of the rinsing water in the final rinsing operation by the temperature detecting unit becomes equal to or higher than the predetermined rinsing temperature before the final rinsing time elapses, sets the first drying mode in the drying step. Selected,
When the temperature of the rinse water detected by the temperature detecting means in the final rinsing operation does not exceed the predetermined rinsing temperature even after the lapse of the final rinsing time, a second drying step is performed in the drying step.
The dishwasher according to claim 7, wherein a drying mode is selected. 9. The first and third timers when the temperature of the rinsing water of the final rinsing operation by the temperature detecting means does not become higher than the predetermined rinsing temperature even after the lapse of the final rinsing time. Is stopped, the heating medium to be supplied to the heating means is switched from the high-temperature heating medium to the heating heating medium, and an extended rinsing time for performing the extended rinsing operation is set.
9. The dishwasher according to claim 8, wherein the drying mode is performed. 10. The drying step after the final rinsing time has passed, when the temperature of the rinsing water in the final rinsing operation by the temperature detecting means becomes equal to or higher than the predetermined rinsing temperature before the final rinsing time elapses. 10. The dishwasher according to claim 8 or 9, wherein the first drying mode is performed by shifting to (1), and the operation of the dishwasher is stopped based on the count value of the first timer.