JPH0274228A - Dishwasher - Google Patents

Abstract

PURPOSE:To improve the workability of the whole detergent work by feeding cleaning water step by step, to change the density of detergent, and by controlling the foaming or defoaming easily, to save the work of the replacement of the detergent or the like. CONSTITUTION:Into a cleaning tank 2 for containing tablewares 2, cleaning water is fed by a water feeding means 16. Besides, to a cleaning nozzle 3 for jetting the cleaning water in the cleaning tank 2, the cleaning water is fed to be circulated by a cleaning pump 10. Besides, by an air mixing means 23, air is mixed in the cleaning water to generate foam. Besides, by a feed water controlling section 26, the means 16 is worked till small quantity detecting output from a water quantity detecting means 17 is generated in the former period of a cleaning process, and in the latter period, the means 16 is additionally worked till a large quantity detecting output from the means 17 is generated. Besides, by a detergent controlling section 27, a detergent casting means 20 is worked at the time of starting the cleaning process. Besides, by a pump controlling section 28, the cleaning pump 10 is worked in the cleaning process. Then, by a mixed air controlling section 30, the air mixing means 23 is worked in the early period of the cleaning process.

Description

Detailed Description of the Invention (a) Invented in the field of industrial application, the tableware washing machine sprays washing water onto the stored tableware in a washing tank, and also mixes air with the washing water and foams it to wash the tableware. Regarding.

(b) Conventional technology Oil stains can be easily removed by foaming detergent and adhering it to tableware. Therefore, in the method disclosed in Japanese Patent Publication No. 62-525675, air is supplied to the wash water using a compressor to create foam in the pre-washing stage, and the tableware is thoroughly soaked.After this, a normal washing process is carried out and the washing water is I try to wash it off. Specifically, an air supply pipe leading to a compressor is connected to the bottom of the cleaning tank, an opening/closing pestle is interposed in this air supply pipe, and the valve t-N is released in the pre-washing stage, and the compressor 1 is operated. Foaming detergent is added to the washing water.

← Problems to be solved by the invention Is the conventional example of such a foaming detergent used to create foam? ◇As a result, the foam does not disappear easily, but it is difficult to remove the foam during the normal washing process, so use an anti-foaming detergent.

Is this invention based on Kou? By changing the concentration of detergent in the detergent, foaming and defoaming can be easily achieved.

B) Means for Solving the Problems The solution according to the present invention includes a washing tank that accommodates tableware, a water supply means for supplying washing water into the washing tank, and a water amount sensor that detects and outputs the amount of water supplied. A means for adding detergent to the washing water, a washing nozzle for spraying the washing water in the washing tank, and a washing water to the washing nozzle. A cleaning pump that circulates and supplies water, an air mixture means that mixes air into the cleaning water and foams it, and a water supply means that operates in the first half of the cleaning process until there is a small amount detection output from the water amount detection means, and in the second half, the water supply means Water supply means until there is winter amount detection output from the detection means? A water supply control unit that operates additionally, a detergent control unit that operates the detergent injection means at the start of the cleaning process, a pump control unit that operates the cleaning pump fl" during the cleaning process, and an air mixture unit that operates in the first half of the cleaning process. It is a modified version with an air mixture control @ section.

(E) In the first half of the action cleaning process, the detergent concentration is increased by supplying a small amount of cleaning water, and air is added to the cleaning water using an air mixture means. Mix to promote foaming. In the latter half of the process, additional washing water is supplied to increase the detergent concentration. Reduce to normal level, stop air mixture, wash pump 2
Made @J.

If the air mixture means is of a type that is equipped with a compressor or the like, the pump will not operate during the stroke cycle, but if it is of a type that generates air mixture during the operation of the pump, then the , the pump is operated over the latter period.The latter type eliminates the need for a compressor, etc., resulting in lower costs.
It is Noh.

When the cleaning pump is activated, cleaning water' can be sprayed from the cleaning nozzle.

To explain based on the example drawings, in Figure 015, what is the drying chamber installed inside the main body 1 of the dishwasher/dryer? Inside the metal container 2, there is a cleaning nozzle 3 (!-1) that rotates while jetting cleaning water and a rail 6 that guides the rollers 5-1Q of the tableware basket 4 to the rear. The inner bottom surface Kt of the tank 2 is slightly raised, and the sheathed heater 7 is arranged in a loop shape, and an f'i door 9 is provided at the entrance/exit 8 of the tank 2.

At the bottom of the main body 1, there are provided a washing pump 10 that circulates and supplies washing water to the washing nozzle 6 and sprays it, and a drain pump 11 that discharges the washing water.
] An F1 control box 12 and an operation section 16 are provided at the bottom of the screen.

At the center of the lower part of the rear wall of the cleaning tank 2 at a higher level than the heater 7, there is provided an inlet 14 for drying heated air which also serves as a water supply port, and at the upper part of the n1 side wall there is an outlet 15 leading to the outside of the machine. .

A water supply channel equipped with a water supply valve 16 as a water supply means is connected to the inlet 14, and at the bottom of the rear wall of the tank, a float switch or the like is installed to detect the amount of water that can be supplied. A detection means 17 is provided, and a blower 19 is provided in the intake passage 18 leading to the introduction 014.

A detergent storage chamber 21 is provided inside the door 9 and is closed by a lid 20 which is opened at an appropriate time when cleaning is started, and constitutes detergent loading means.

The suction path 22 leading to the suction port of the cleaning pump 10 is provided with an air supply Fj & 24 connected to the air supply valve 25', so that air is mixed into the suction water by the suction force of the pump 10 when the valve is opened. I have to. Thus, the pump 10 and the air supply valve 26
, and the air supply path 24 constitute an air mixture means.

The control box 12 includes a CPol ROM and a RAM for controlling the entire operation of the dishwasher/dryer.

A microcomputer (hereinafter referred to as a microcomputer) that fits from 10 to
There are 25. As shown in FIG. 1, the mine 7 receives an operation signal from the operation unit 13 and a water amount detection output from the water amount detection means, and receives the heater 7, washing pump 10, drain pump 11, water supply means (water supply valve 16), Prower-19
, outputs control signals to the air mixture means (air supply valve 26), detergent injection means, buzzer, and display device.

For this purpose, the microcomputer 25 has a water supply control section 26, a detergent control section 27, a pump control section 8, a first timer 29, an air mixture control section 60, a second tie-1-61, and a sixth tie-F-62. .

The operation of the cleaning process will be explained based on the flowchart of FIG. 2. First, an operation course is selected and the start key is operated. If this operation is active, the detergent is set in the detergent supply means. Water supply control section 26 of microcomputer 25
The water supply valve 16 is opened to supply cleaning water from the inlet 14, and the arrival of a small amount detection output from the water amount detection means 17 is checked.

When the small amount detection output arrives, the water supply control unit 26 closes the water supply valve 1.
Closed on 61. Detergent control unit 27ij of the microcomputer 25,
Upon arrival of the small amount detection output, the lid 20 of the detergent injection means is opened to inject all the detergent, the pump control unit 28t''lt of the microcomputer 25 is operated until the first timer 29 counts up, and the !icon is activated. The air supply valve 23 in the air mixture control section 60 of 25 is opened.The heater 7 is also operated under temperature control to heat the cleaning water to a constant temperature.

Then, since the cleaning water has a high detergent concentration and sucks air in the suction path 22, it foams when jetted from the cleaning nozzle 6. Then, I started getting ready for the tableware.

When the first timer 29 counts up, the pump control section 28 stops the operation of the cleaning pump 10.

This stop time Vi is counted by the second timer 31.

During this counting, the bubbles adhering to the tableware act on the oil stains, and some of them begin to flow down together.

When the second timer 61 counts up, the air mixture control section 60 closes 26 intake valves. And the water supply control section 26
The water supply valve 16 is opened again to supply additional water, and the arrival of the large amount detection output from the water amount detection means 17 is checked.

When the large amount detection output arrives, the water supply control unit 26 water supply valve 1
6 is closed, and the process 1 of making the cleaning pump 10 is restarted.

The additional water supply lowers the detergent concentration and makes it difficult for n1 foaming to occur, and in addition, since there is no air mixed in, the cleaning water is ejected from the cleaning nozzle 6 onto food P3 without foaming.
Wash the dishes. In addition, oil stains adhering to food preparations and flowing down
It bubbles, flows steadily down with the jet of water, and disappears.

The third timer 32 counts the injection time of the relatively busy and low concentration cleaning water. When the sixth timer 62 counts up, the pump control ff11 section 2
8 stops the operation of the cleaning pump 10, and at the same time operates the drain pump 11 for a certain period of time to drain water.

Normal operation then ends after several rinsing steps and a drying step.

(G) Effects of the Invention According to the present invention, by supplying washing water in stages, the detergent concentration is changed to 1 and the foaming and defoaming are controlled to [11]. The work efficiency of the entire cleaning work can be improved by eliminating the above-mentioned work.

[Brief explanation of the drawing]

FIG. 1 is a control block diagram of a dishwasher according to the present invention, FIG. 2 is a 70-chart for explaining the operation, and FIG. 6 is a side sectional view. 2-Washing tank, 6-Washing nozzle, 10-Washing pump, 14
- inlet, 16-water supply valve C water supply means), 17-water amount detection means, 20-lid (e#, agent injection means), 26-air supply valve (
air mixture means), 25-microcomputer, 26-water supply control section, 27
-ELC] Control J control section, 28-pump control section, 60-air mixture control section. Appearance: Sanyo Electric Co., Ltd. Patent Attorney Takuji Nishino C and one other person) Figure 1 Figure 3

Claims (1)

[Claims] (1) A washing tank that accommodates dishes, a water supply means that supplies washing water into the washing tank, a water amount detection means that detects the amount of water supplied and outputs each, and a detergent injection that adds detergent to the washing water. means, a cleaning nozzle that sprays cleaning water in a cleaning tank;
a cleaning pump that circulates cleaning water to the cleaning nozzle;
The air mixture means mixes air into the washing water to foam it, and the water supply means is operated in the first half of the washing process until a small quantity detection output is detected from the water quantity detection means, and in the latter stage, a large quantity detection output is detected from the water quantity detection means. a water supply control section that additionally operates the water supply means until the washing step is started; a detergent control section that operates the detergent injection means at the start of the washing process; a pump control section that operates the washing pump during the washing process; A dishwasher equipped with an air mixture control section that operates.