JPH03133418A - Tableware washing machine - Google Patents

Abstract

PURPOSE:To decrease the number of times of rinsing without deteriorating the rinsing performance in the case hot water is used by determining the number of rinsing processes by setting a detected temperature by a temperature detecting means after operating a washing means for a prescribed times as a water temperature of feed water, after feed water is ended. CONSTITUTION:By a signal from a start means 4, a control means 1 starts a program, and first of all, drains remaining water in a washing tank 9 by a draining means 5. Subsequently, by a feed water means 2, washing water is supplied into the washing tank 9 until it is detected by a water level detecting means 3. Next, washing is executed by a washing means 6, and when it is ended, water is drained by the draining means 5. Subsequently, the operation enters into the rinsing process, a rinsing operation is executed for t1 seconds by the washing means 6 after feed water is ended, a water temperature fall by a temperature of tableware and a machine body is generated, and thereafter, a water temperature is measured by a temperature detecting means 8, and in the case of exceeding a set temperature T1 deg.C, the rinsing process of a signal portion, that is, rinsing, draining, and feed water are omitted. Thereafter, the operation advances to rinsing, draining, feed water, heating rinsing, and draining, and in the end, drying is executed, while executing the electric conduction control by a heating means 7, and the operation is ended.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dishwasher connected to a water heater for washing dishes and the like.

BACKGROUND OF THE INVENTION A conventional dishwasher has a configuration shown in FIGS. 2 to 3. Namely, 1 is a control means for controlling washing, rinsing, and drying programs, 2 is a water supply means for supplying water used for washing and rinsing, 3 is a water level detection means for detecting the water level in the washing tank, and 4 is a control means. Reference numeral 1 indicates a starting means for starting the washing tank, 6 a drainage means for discharging water in the washing tank, 6 a washing means for circulating washing water for washing, and 7 a heating means for warming the inside of the tank during washing or drying. 8 is a temperature detection means for detecting the temperature in the cleaning tank 9 and the cleaning water.

Reference numeral 1Q denotes a nozzle for applying washing water from the washing means 6 to the dishes, and is arranged in a washing tank 9 for storing and washing dishes and the like.

Next, the operation will be explained with reference to FIG. 4. In response to a signal from the start means 4, the control means 1 operates the drainage means 6 in step 2o to drain the remaining water in the cleaning tank 10. In step 21, the water supply means 2 is operated to supply water into the cleaning tank 9, and in step 22, water is supplied until the water level reaches a constant level according to the signal from the water level detection means 3.

In step 23, the heating means 7 and the washing means 6 circulate the washing water while heating it, and spray it from the nozzle 8 to wash the dishes.In step 24, the drainage means 5 is operated to drain the washing water. Next, in step 25, water supply, drainage, and rinsing (only the cleaning means 6 operates) are repeated a fixed number of times (mostly 2 to 3 times), and in step 26, the heating means 7 and the cleaning means 6 heat the cleaning water. The liquid is circulated while spraying from the nozzle L'10 for rinsing.

Next, after rinsing is completed, in step 27, the heating means 7 is operated intermittently to warm the inside of the washing tank e and dry water droplets on the dishes.

The above is the operation of a typical dishwasher. However, when tap water is used as washing water, it takes a long time to heat the dishwasher, especially in winter, and the dishwasher is sometimes connected to a water heater to supply hot water to the dishwasher in order to shorten the operating time.

However, the number of rinsing steps after the cleaning step was the same whether operating with water or hot water.

Problems to be Solved by the Invention It is known that the higher the temperature of water, the higher the rate and amount of water dissolving dirt increases proportionally.

Therefore, rinsing with hot water should improve the rinsing performance of detergent and tableware components.

However, in conventional configurations, the control program is set to ensure water rinsing performance.
Rinsing with hot water results in excessive performance, which wastes the energy required to heat the water in the water heater, which increases the running costs required to operate the product and impairs economic efficiency.

In view of the above problems, an object of the present invention is to control the number of rinses when using a dishwasher with hot water supply, thereby further shortening the operating time and reducing running costs.

Means for Solving the Problems The technical means of the present invention to achieve the above object is to store tableware in a dish basket and store it in a warehouse, and a washing tank for storing washing water, and a water heater connected to the washing tank. a water supply means for supplying washing water, a water level detection means for detecting the water level in the washing tank, a drainage means for draining the water in the washing tank, and a washing means for circulating the washing water and spraying it from a nozzle to wash dishes. , comprising a temperature detection means for detecting the temperature in the cleaning tank and the temperature of the washing water, and a control means for controlling the water supply means, the drainage means and the washing means by inputting signals from the water level detection means and the temperature detection means, and when the water supply is finished. The number of rinsing steps is changed depending on the temperature detected by the temperature detection means.

The technical means of the present invention for achieving the second object is configured to determine the number of rinsing strokes by using the temperature detected by the temperature detection means after operating the cleaning means for a predetermined time after water supply is finished as the supplied water temperature. be.

Effect According to the first technical means described above, the number of times of rinsing can be reduced when the water temperature exceeds a certain set value by the signal of the detected temperature by the temperature detecting means at the end of water supply, thereby reducing the rinsing performance. Therefore, it is possible to shorten operating time and reduce running costs.

Furthermore, according to the second technical means, since the washing means is operated for a predetermined period of time after the water supply is completed, it is possible to compensate for a decrease in the temperature of the hot water supply due to the temperature and quantity of the machine body and tableware.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIG. The basic configuration of the dishwasher is the same as the conventional dishwasher, so the same reference numerals will be used and the explanation thereof will be omitted.

The feature of the present invention lies in the control flow of the control means 1 shown in FIG. The control means 1 completes the program in response to a signal from the nutart means 4, and in step 3o, the drain means 6 is operated to drain the remaining water in the cleaning tank 9. In step 31, the water supply means 2 is operated, and in step 32, washing water is supplied into the washing tank 9 until the water level is detected by the water level detection means 3.

After the cleaning water is supplied, the cleaning means 6 is operated to perform cleaning (
Step 33) When the process is started and cleaning is completed, the draining means 5 is operated and the draining process (step 34) is started.

After cleaning is completed, the rinsing process begins. Water supply (step 36)
After completion, the cleaning means 6 is rinsed for t1 seconds (step 36)
Step 3: After performing this step and causing the water temperature to drop due to the temperature of the tableware and the aircraft body, the water temperature is measured by the temperature detection means 8.
7), If T1 °C or higher, rinse (step 38)
, drainage process (step 39), water supply process (step 40)
) is omitted.

After that, the process progresses to rinsing (step 41), draining process (step 42), water supplying process (step 43), heating rinsing (step 44), and draining process (step 46), and finally, the heating means 7 is energized and controlled. While drying (step 46), the operation is completed.

Note that omitting step 36 is suitable for cases where the tableware capacity is small or for tabletop type dishwashers with small bodies.

In addition, in this embodiment, the number of rinsing steps is reduced in the case of hot water supply, but similarly, in the case of water supply and when the water temperature is low, the number of rinsing steps is increased to ensure a predetermined rinsing performance. It is also easy to configure.

Effects of the Invention As is clear from the above embodiments, according to the present invention, when a dishwasher is operated with hot water, the number of rinses can be reduced without deteriorating the rinsing performance, and the operating time can be shortened. Running conuts can be reduced. Furthermore, even when the water temperature is low, the rinsing performance does not deteriorate.

To provide a dishwasher with excellent performance that exhibits constant rinsing performance regardless of the high or low temperature of the water supply.

[Brief explanation of the drawing]

FIG. 1 is a flowchart of a dishwasher according to an embodiment of the present invention, FIG. 2 is a block diagram of main parts of a conventional dishwasher, FIG. 3 is a sectional view thereof, and FIG. 4 is a control flowchart of the same. 1... Control means, 2... Water supply means, 3
... Water level detection means, 4 ... Start means, 5 ... Drainage means, 6 ... Cleaning means, 7 ... Heating means, 8...Temperature detection means, 9...Cleaning tank, 10...Nozzle.

Claims (2)

[Claims] (1) A washing tank for storing tableware in a dish basket and storing washing water, a water supply means for supplying washing water from a water heater into the washing tank, and detecting the water level in the washing tank. a water level detection means, a drainage means for draining water in the washing tank, a washing means for circulating washing water and spraying it from a nozzle to wash dishes, a temperature detection means for detecting the temperature inside the washing tank and the washing water; The control means controls the water supply means, the drainage means, and the cleaning means by inputting signals from the water level detection means and the temperature detection means, and the control means changes the number of rinsing strokes according to the temperature detected by the temperature detection means at the end of water supply. A dishwasher configured to (2) The dishwasher according to claim 1, wherein the control means determines the number of rinsing strokes by using the temperature detected by the temperature detection means after operating the washing means for a predetermined period of time after the water supply ends as the temperature of the water supply.