JPH01236030A - Dish washer - Google Patents

Abstract

PURPOSE:To execute heat insulation following or independent of operation completion by providing a hot insulation control part to control the execution of a heat insulating course by means of a heater and a heat insulating key to singly or selectively designate the heat insulating course. CONSTITUTION:When the fact the selection of respective courses and the designation of a hot insulation are executed is discriminated by a discriminating part 22, a shift to a heat insulating work by a hot insulation control part 24 is executed after respective courses are completed on the conditions of the course selection except for a prewashing course. At a place where many coffee cups are used such as a tearoom, the cups are washed, dried and heat-insulated, but since the dirt is small, they do not need to be intensively washed. Then, it is convenient to select a rinsing and drying course and, simultaneously, to designate the hot insulation. In such a way, by the designation of a heat insulating key 18, the dishes can be heat-insulated singly or after a prescribed course is completed, and a dish washer, in which a usability is very good, can be offered.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a dishwasher equipped with a washing pump that sprays washing water, a heater that produces drying air, and the like.

(B) Prior Art This type of dishwasher automatically or selectively executes the washing, rinsing, and drying steps, as disclosed in Japanese Utility Model Application Publication No. 51-24137. The execution time for a series or individual steps is set in advance, and the steps are left as they are after they are completed.

(c) Problems to be Solved by the Invention Therefore, even for items such as coffee cups that are best kept warm before use, they cool down after being washed and dried by being left unattended. They were kept warm with bats etc.

According to the present invention, heat can be maintained continuously or independently after the end of operation by specified operation.

(:) Means for Solving the Problem A course control unit that controls the execution of each course that combines each process such as washing and rinsing by jetting washing water and drying by a heater, and a selection key to select each course. The apparatus is configured to include a heat retention control unit that controls execution of the heat retention course by the above-mentioned printer, and a heat retention key that designates the heat retention course either alone or in addition to the selection operation using the selection key.

(e) If you select an execution course according to the amount and type of tableware, that course will be executed, but if you also specify a keep warm course, the keep warm course will be carried out successively after the execution course, and the dishes will be washed. You can use tableware that has been kept warm. In addition, if you specify the Keep Warm key alone without selecting a course, you can keep tableware warm, such as a coffee cup or the like instead of a heat retainer or bat.

In order to wash and keep warm items that do not need to be washed too vigorously, such as coffee cups, a course may be set in which the keep warm key is specified alone to perform the rinse process and then keep warm.

(F) Example The following will be explained based on the drawings. In FIG. 1, a main body 1 of a tabletop dishwasher is provided with an opening/closing door 2 on the entire surface opening,
A cleaning tank 3 is provided inside.

The middle stage of this washing tank 3 is designed so that dishes 4 can be put in and taken out.

At the bottom of the washing tank 3, a washing nozzle 5 for spraying washing water onto the tableware in the dishwasher 4 is rotatably installed, as well as a washing nozzle 5 for heating the washing water, for heating drying air, and for heating heat retention air. It is equipped with 6 sheathed heaters.

The cleaning pump 7 and the drain pump 8 suck water from a recess in the bottom of the tank via a filter, the cleaning pump 7 circulates and supplies cleaning water to the cleaning nozzle 5, and the drain pump 8 also serves as a drain valve. Discharges cleaning water during operation. The blower 9 circulates drying air and warm air inside the tank.

Water is supplied to the cleaning tank 3 by opening the water intake valve 10, and the supplied water level is detected by a water level detection device 11 using a float. A thermistor 12 detects the temperature of the washing water in the tank, the temperature of the drying air, and the temperature of the insulating air.

At the lower front of the main body 1, there is provided a control box 13 which has an operation surface and incorporates a control circuit. As shown in Figure 2, the operation surface has character displays and time displays (minutes) for each process of pre-washing, washing, scrubbing, and drying, and the L corresponding to each process.
ED 14, pre-wash course and washing only for the pre-wash process,
Suzuki, an LED l 5- corresponding to the standard course that sequentially executes each drying process and a different course, a drying process time change key 16, and a selection V-17 for each course,
A heat retention key 18 for selecting a heat retention course, a start key 19 which also serves as a - time stop key, and a power switch are provided. It should be noted that since the drying process can be changed in four different times including zero, LEDs 14-- are arranged corresponding to each time. Further, each key 16, 17, and 18 is used to change the time, course, or stop/start sequentially each time it is operated, and the keep warm key 18 is used to select whether to keep warm or not.

In addition, the operation of this heat retention key 18 is accepted in addition to the course selection, and therefore, the reception of the heat retention course is indicated by the LED.
It is independently displayed by ON-OFF of 18'.

The control circuit in the control box 13 includes a ROMRAM,
A microcomputer 20 consisting of a CPU, Ilo, etc.
The main focus is on the microcomputer, whose circuit diagram is shown in Figure 3. That is, the microcomputer 20 includes the water level detection device 11, the thermistor 12, and each key 16, 17, 18, .
19, input the signal, and operate the sheathed heater 6, water intake valve 10,
Drain pump 8, washing pump 7, blower 9, LED 1
4-. 15-, 18'.

Additionally, the microcomputer 20 can output to the buzzer 21.

Next, the control operation by the microcomputer 20 will be explained based on the flowchart of FIG. 4. First, set the tableware in the washing tank 3, turn on the power switch, select the desired course using the selection key 17, then operate the keep warm key 18 if you want to keep it warm afterwards, and then start. Operate key 19. Further, when the user only wants to keep washed tableware, such as a coffee cup, warm, the start key 19 is operated after the keep warm key 18 is operated.

When each course is selected, each course flag is set, when a heat-retaining course is selected, a heat-retaining flag is set, and when the start key 19 is operated, a start flag is set.

The course and heat retention determining unit 22 of the microcomputer 20 discriminates between the selected course and the designation of the heat retention course, and if the course is selected, the course control unit 23 executes the course, and if the heat retention course is specified, the course control unit 23 executes the heat retention course. The execution by the heat retention control unit 24 is started.

In the pre-washing process, supply water is injected from the washing nozzle 5 for a short time and drained. In the washing process, supply water is heated and sprayed from the washing nozzle 5, detergent is added if necessary, and water is drained after a predetermined time has elapsed after the water temperature reaches a predetermined value (for example, 60°C). . In the rinsing process, the same operation as the washing process is repeated without supplying detergent, and in the third washing operation, the predetermined temperature is set to about 70° C., and the water is drained. In the drying process, the drying air is circulated by heating with the heater 6 and blowing air with the blower 9 after draining water.

The heat retention control unit 24 controls the heater 6 to 0N- based on the comparison result obtained by the comparison unit 25 so that the temperature is maintained at 4 degrees around 60 degrees Celsius, for example.
At the same time, the blower 9 is operated. This heat retention work continues until the opening/closing door 2 is opened.

If the determination unit 22 determines that each course has been selected and a heat retention designation has been made, the heat retention control unit 24 performs the heat retention operation after each course is completed, provided that the course selection is other than the prewash course. Transition.

In places where coffee cups are used frequently, such as coffee shops, the cups must be washed, dried, and kept warm, but there is no need to wash them vigorously as there is little dirt. Therefore, it is convenient to select the rinse/dry course and also specify keep warm. Furthermore, in order to simplify the key operation, if the warming key 18 is operated twice without selecting a course, the third Susuki operation described above may be executed before the warming operation. , press the key for the third time to cancel the keep warm designation. A third rinsing operation may be inserted and executed by operating another key. However, this third Susuki work,
If it is determined that a course other than the pre-wash course is selected and it is determined that heat retention is specified, the jump instruction section 26 will skip this step.

(G) Effects of the Invention According to the present invention, it is possible to keep tableware warm either alone or after a predetermined course is completed by specifying the heat retention key, and it is possible to provide a dishwasher that is extremely easy to use. It is.

[Brief explanation of the drawing]

FIG. 1 is an internal mechanism diagram of the dishwasher according to the present invention, FIG. 2 is a front view of the operation surface, FIG. 3 is a control circuit diagram, and FIG. 4 is a flow chart for explaining the operation. 6- Heater, 9...Blower-118-/Warmth key, 2
0 microcomputer, 23 course control section, 24-heat retention control section.

Claims (1)

[Claims] (1) A course control unit that controls the execution of each course that combines washing and rinsing by jetting washing water, drying by a heater, etc., a selection key to select each course, and a heat retention course by the heater. A dishwasher equipped with a heat retention control unit that controls the execution of the heat retention course, and a heat retention key that specifies the heat retention course either alone or in addition to a selection operation using a selection key.