JPH0282932A - Dish-washing and drying machine - Google Patents

Abstract

PURPOSE:To avoid the waste of the electric power consumption, by a method wherein courses are classified into one standard course of forced draft and the other standard course of forced draft by heating with a heater, and their courses are alternately chosen, whereby it makes it possible to automatically after the drying process of each standard course according to a surrounding temperature. CONSTITUTION:A specified temperature is previously stored in a memory 29 for a setting value, and a temperature measured by a thermistor 18 is compared with the specified temperature, e.g., 30 deg.C, in a temperature comparator 27. That is to say, the comparator checks whether a temperature measured is 30 deg.C and over. When a signal is outputted from the comparator, a standard draft course which does not operate a heater 7 in drying process is chosen as one course by a course-selecting controller 28, and its course indicator 22 is lighted. When the signal is not outputted from the comparator, a standard heating course which operates the heater 7 in the drying process is chosen as the other course by the course-selecting controller 28, and its course indicator 23 is lighted. Its drying process is performed by heating of the heater 7 and by blasting of a blower 17.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention relates to a dish washer/dryer that sprays heated drying air from a blower to dry dishes after washing them with jet water.

(b) According to the conventional technique disclosed in Japanese Patent Publication No. 62-53173, the drying operation after washing is carried out after heating and rinsing to improve the drying effect. It is also well known that after heating and rinsing, the dishwasher is left to dry naturally, and the dishwashers on the market have two courses: one that allows for natural drying, and the other that automatically performs the drying process following heating and rinsing. Although it is possible to select manually, in many cases the latter course is automatically selected as the standard course when the power is turned on.

(c) Problems to be Solved by the Invention Therefore, in the conventional example, even when the ambient temperature is high and a considerable drying effect can be expected even if left to dry naturally,
Drying using a heater may be performed, which is wasteful in terms of power consumption.

The present invention aims to eliminate wasteful power consumption by making it possible to automatically change the drying content of a standard course depending on the ambient temperature.

(d) Means for Solving the Problems The solution according to the present invention includes a temperature comparison unit that provides a means for measuring ambient temperature, such as a thermistor, and compares whether the measured temperature is 30°C or higher, for example. The operation control means is provided with a course selection control section that selects a course in which the heater is not activated during the drying process in accordance with the output of the comparison section.

(E) Function When the ambient temperature is high, such as in the summer, the drying process is carried out with the heater inactive, and only one blower sends drying air, and no heating is performed by the heater. Furthermore, when the ambient temperature is low, the heater is activated to perform the drying process. If these are considered as the standard course when the power is turned on, the automatically selected standard course is changed depending on the measured temperature at this time, and is displayed, for example.

That is, it is divided into a standard course of forced ventilation and a standard course of forced ventilation using heater heating.

(F) To explain based on the drawings of the embodiment, in FIG. 3, a metal cleaning tank 2 disposed in the main body 1 includes a nozzle arm 3 that rotates while spraying cleaning water; Roller 5 of tableware basket 4
... is provided with a rail 6 that guides it in the front-back direction. Further, a sheathed heater 7 is disposed on the inner bottom surface of the cleaning tank 2 so as to be slightly raised, and a door 8 is provided at the front opening of the tank 2.

At the bottom of the main body 1, there are provided a washing pump 9 for circulating and spraying washing water to the nozzle arm 3, and a drain pump 10 for discharging the washing water.At the lower front of the main body 1, there is a control box. 11 and an operation section 12 are provided.

A ventilation port 13 that also serves as a water supply port is provided at the center of the lower part of the rear wall of the cleaning tank 2 at a higher level than the heater 7. A downward-facing hood 14 is provided on the inside of the tank and a hood 14 is provided on the outside of the tank. Vertically long ducts 15 are arranged in series. The duct 15 has a blower 17 installed therein for sucking outside air through an intake port 16, and is connected to a water supply pipe (not shown). Cleaning tank 2
The exhaust from the tank is carried out through an exhaust port (not shown) in the upper part of the rear wall of the tank.

The outer bottom of the cleaning tank 2 shows the ambient temperature, the cleaning water temperature during cleaning,
A thermistor 18 is provided as a measuring means for measuring the drying air temperature during drying.

The operation unit 12 includes a start key 19 as shown in FIG.
, a course sorting key 20, a drying time key 21, a process progress indicator 22..., a sorting course indicator 23.
It is equipped with... Additionally, a power switch key 24 is attached.

The operation control means built into the control box 11 is a CPU
, a ROM, a RAM, and a microcomputer (hereinafter referred to as a microcomputer) 25, whose control block diagram is shown in FIG.

The microcomputer 25 inputs operation signals from each key 19, 20, and 21 and a temperature signal from the thermistor 18, and controls the heater 7.
, the washing pump 9, the drain pump 10, the water supply valve 26, the blower 17, and each display 22..., 23... to control the operation. section 28, set value storage section 29, stroke control section 3
0, constitutes the stroke time counter 31.

To explain the operation control operation based on the flowchart in FIG. 2, when the power switch is key operated, first the temperature measured by the thermistor 18 is set to a predetermined temperature, for example 30°C.
and is compared by the temperature comparison section 27. That is, it is checked whether the measured temperature is 30° C. or higher, and if there is an output from the comparison section, the course selection control section 28 selects the standard (ventilation) course in which the heater 7 is not activated during the drying process, and selects the corresponding course. The display 23 is turned on.

If there is no comparison unit output, the course selection control unit 28 selects a standard (heating) course in which the heater 7 is activated in the drying process as the course, and lights up the corresponding course indicator 23.

The predetermined temperature is stored in the set value storage section 29 in advance.In this way, the microcomputer 25 selects one of the two standard courses depending on the ambient temperature at the time the power is turned on.
Display. After this display, the user can arbitrarily select a course using the course selection key 20, and can also replace the standard course.

By operating the start key 19, the process control unit 30 advances the operation in the order of a washing process, a rinsing process (multiple times), and a drying process. The time for each stroke is counted by a stroke time counter 316. In the cleaning stroke, water is supplied from the air outlet 13, heated by the heater 7, and the cleaning pump 9 is driven, and the water temperature during this period is kept at 60°C to 70°C.
Controlled at °C. The cleaning water is injected and circulated through the path of the filter 9-21, the pump 9, and the nozzle arm 3.

When the washing process and the rinsing process are completed by repeating draining and water supply (heating) several times, the drying process begins after the final draining. The drying process usually involves heating with a heater 7 and a blower.
This is executed by blowing air by 17. The outside air sucked into the duct by the blower 17 enters the tank through the air outlet 13, is directed toward the bottom of the tank by the hood 14, flows forward along the heater 7 from both sides of the tank, and is heated. , merge in the center of the anterior part of the tank.

When the standard (ventilation) course is selected automatically or manually, the drying process is performed by deactivating the heater 7 and only blowing air from the blower 17. in this case,
If the ambient temperature is 30° C. or higher, drying can be performed, and when this course is manually selected at a temperature lower than 30° C., the effect of preventing dew condensation is obtained by ventilation.

(G) Effects of the Invention According to the present invention, the content of the drying process can be changed depending on the ambient temperature, and if the temperature is high, the heater can be deactivated and ventilation drying can be performed, eliminating wasteful power consumption. Therefore, it is possible to provide a dish washer/dryer with low running costs.

[Brief explanation of the drawing]

FIG. 1 is a control block diagram of the dishwasher/dryer according to the present invention, FIG. 2 is a flowchart for explaining the operation, FIG. 3 is a side sectional view, and FIG. 4 is a front view of the operating section. 3... Nozzle arm, 7... Heater, 18... Thermistor (temperature measurement means), 25... Microcomputer (operation control means), 27... Temperature comparison section, 28... Course selection control Department.

Claims (1)

[Claims] (1) A nozzle arm that injects cleaning water in the cleaning process, a heater that heats the cleaning water in a timely manner in the cleaning process, or further heats the drying air in the drying process, a temperature measuring means that measures the ambient temperature, It includes a blower that sends drying air into the cleaning tank during the cleaning process, and an operation control unit that executes the drying process after the cleaning process. What is claimed is: 1. A dishwasher/dryer comprising: a temperature comparator; and a course selection control part, which selects a course in which a heater is deactivated during a drying process based on the output of the temperature comparator.