KR910004959B1 - Water supply control unit of dishwasher - Google Patents

Abstract

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Description

Water supply control unit of dishwasher

1 is a schematic cross-sectional view of a dish washer showing a state in which a water supply control device according to the present invention is installed.

Figure 2 is a longitudinal sectional view of the water supply control means applied to the water supply control device of the present invention.

Figure 3 is an enlarged cross-sectional view showing the water supply control means to explain the operating state of the water supply control device of the present invention.

4 is a cross-sectional view showing the configuration of a water supply chamber applied to the present invention.

* Explanation of symbols for main parts of the drawings

3: water supply control device 31: proper water level detection chamber

32: abnormal level detection chamber 33: buoyancy member

34A, 34B: opening and closing member 36: distribution furnace

311, 321: primary inflow path 312, 322: secondary inflow path

313, 323: 3rd inlet 14: water inlet

16: water supply room 16A: overflow wall

16B: outlet 17: water supply pipe

18: House 311A, 321A: Venturi tube

The present invention relates to a water supply control device of a dishwasher for stably detecting the water supply state of the washing water in the washing tank of the dishwasher in multiple stages.

In the dishwasher, the body is generally formed in a rectangular box shape, and a washing room is provided in the inside thereof, a mounting table on which a bowl is placed on the upper part, and a storage tank in which the washing water is stored in the lower part. The washing nozzle is installed rotationally, and the washing water in the reservoir is used as the washing pump to continuously and repeatedly pump and wash the washing nozzle.

By the way, it is very important that the water supply problem of the wash water in the water storage tank of the washing room, that is, to supply a certain amount of the wash water.

As a water supply control device of a dishwasher, various kinds have been developed and used to date. For example, the water level of the wash water in the water tank is sensed using the buoyancy member, and the buoyancy member is raised and lowered according to the water level displacement to control the water supply by turning on / off the lead switch or the micro switch which operates the water supply valve. The water level was controlled using a switch to control the water supply.

However, the detection method using the pressure switch has a problem that the pressure switch operation is limited to the minimum level of the water level, so that the control operation is difficult at the time of low water level control, and that a malfunction occurs due to the water level deviation caused by the flow of water during water supply. In the method of controlling the water supply by detecting the water level displacement of the water as a buoyancy member, the water supply control was easier than the pressure switch, but the water level detection is uncertain due to the crest generated on the water surface by the water supply water pressure during water supply. In recent years, a separate water level sensing chamber is isolated from one side of the water tank of the washing chamber, and the buoyancy member is operated in the water level sensing chamber to exclude the influence of the crest and give accuracy in the water level sensing.

However, in order to increase the accuracy of the operation of the buoyancy member, the buoyancy member is closely inserted and moved in the water level sensing chamber without any gap with the inner wall.However, after washing, the food residues or oils and bubbles are adhered to the inner wall of the water level sensing chamber. As the buoyancy member is stuck to the main wall by the adhesive, there is a problem that the water level sensing function is lost. Also, the water level sensing chamber is blocked by this material, so that the wash water does not flow, so the water level sensing function is completely lost. There was a problem such as not being.

The present invention has been made in consideration of the above circumstances, and an object thereof is to provide a water supply control device for a dish washer that is excellent in stability and accuracy in the operation of the washing water level detection means and at the same time completely prevents malfunction and ensures water supply control.

That is, the present invention has a height difference on both sides of the body of the water supply control means, and separates the proper level sensing chamber and the abnormal level sensing chamber up and down, and drives the opening and closing member for controlling the opening and closing operation of the water supply valve in each of the level sensing chambers. At the same time, a buoyant member was installed at the top and bottom of the inflow path for washing water in the reservoir in each of the appropriate level detection chamber and the abnormal level detection chamber.

In particular, the present invention is configured to separate the water level in one or two stages, that is, the appropriate or abnormal level detection chamber for detecting the appropriate level and the abnormal level inside the body, and several inflows of the washing water flows into each of the level sensing chambers in multiple stages. It is characterized by the fact that the water level is sensed and the stability of water supply control is provided by the furnace.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

The figure shows a dish washing machine used for dish washing, in FIG. 1, 1 is a dish washing machine main body.

The dishwasher main body 1 has a rectangular housing shape and a washing chamber 11 for washing dishes in the inside thereof, and the mounting table 11A on which the bowl 2 is placed is placed on the upper and upper sides. It is installed in the lower part of the reservoir (11B) to store the wash water, and in the center of the reservoir (11B) to install the washing nozzle 12 for washing the dish, and the water supply valve (top) 13 is provided with a washing water supply port 14 that is supplied through the water and the bottom side of the reservoir 11B is configured with a drain 15 for discharging the washing water after the washing operation.

In addition, a water supply chamber 16 is provided between the water supply port 14 and the water supply valve 13, and the overflow wall 16A is provided on one side of the water supply chamber 16, and at the same time, The water supply pipe 17 and the discharge port 16B connected to the hose 18 on the lower side are provided, and the washing water supplied through the water supply valve 13 temporarily stays in the water supply chamber 16 to reduce the water pressure. If the water level of the water supply and the washing water reaches the height of the overflow wall 16A in the same state as above, the washing water flows over the overflow wall 16A and is supplied to the reservoir 11B through the water supply port 15, and at the same time, the outlet 16B is opened. The water is simultaneously supplied to the reservoir 11B0 via the hose 18 and the water supply pipe 17.

The present invention relates to a wash water supply control for controlling the water supply level when water is supplied to the wash water in the water reservoir 11B. The water supply stage 17 connected to the lower part of the water tank 11B to supply the wash water as shown in FIG. The rear end of the tank extends outward of the water tank 11B, and the water supply control device 3, which will be described later, is connected to the end thereof.

At this time, the water supply control device 3 is installed such that its installation height is located within the water supply level of the reservoir 11B.

In addition, the water supply control device (3) is a position where the body is composed of a rectangular body, and the inside of both sides of the body, the water level detection chamber 31 and the water level line or more above the position reaching the proper water level line of the reservoir 11B. The abnormal water level detection chamber 32 is configured to control the water supply of the reservoir 11B.

And each of the appropriate water level detection chamber 31 and the abnormal water level detection chamber 32 is provided with a buoyancy member 33 to move freely in accordance with the change in the water level of the water supplied to the water level detection chamber 31, On the upper part of the 32, an opening / closing member for driving control of the water supply valve 13, that is, a proper level sensing opening / closing member 34A and an abnormal level sensing opening / closing member 34B is installed so that the buoyancy member 33 detects the water level. Simultaneous buoyancy force of the buoyancy member 33, the opening and closing member 34A, 34B is in contact with, and separated, so that the water supply valve 13 is closed, open to control the water supply.

In addition, at the inner circumference of the upper end of each of the water level sensing chambers 31 and 32, stepped portions 31A and 32A are provided so as to be separated from the bottom of the angle level sensing chamber when the buoyancy member 33 descends. ) Has completely eliminated the problem of sticking to the floor.

On the other hand, the lower one side of the water supply control device 3 is provided with an inlet 35 through which the water supply pipe 17 connected to the reservoir 11B is connected to the water supply, and the inlet 35 and the appropriate water level sensing chamber 31 are provided. And between the abnormality level detection chamber 32 is connected to several inflow paths to be described later in multiple directions in multiple directions.

Referring to this configuration in detail with reference to Figs. 2 and 3, in the lower body of the body of the water supply control device 3, the washing water in a line with the inlet 35 in the transverse direction, each water level detection chamber 31, A distribution path 36 for distributing and supplying to the (32) side, and the upper portion of the distribution path 36 and one side of the proper water level sensing chamber 31 were raised to the upper part of the proper water level sensing chamber 31; It connects to the primary inlet (311) for introducing the washing water to the lowest surface of (31) to primarily sense the appropriate level of the washing water.

At this time, the washing water flows into the bottom of the sensing chamber so that the buoyancy member 33 drops by the rising force of the washing water level flowing into the bottom when the buoyancy member 33 sticks to the bottom of the sensing chamber to prevent malfunctions and at the same time the distribution path 36. And a venturi tube section 311A between the first inlet 311 and the first inlet 311 so that the suction power is applied to the primary inlet 311 by the drainage pressure of the washing water discharged through the distribution passage 36 when the washing water is drained. The washing water introduced into the detection chamber 31 is configured to be sucked out based on the siphon principle.

The second inflow path 312 is directly connected to a communication path 36A provided in the middle of the distribution path 36 at the other side of the proper water level detection chamber 31 to introduce the washing water to the upper side of the proper water level detection chamber 31. When the primary inflow path 311 is blocked by food waste, etc., the washing water is introduced into the proper water level detection chamber 31 through the secondary inflow path 312, thereby providing safety to the water level detection and malfunctioning. Will be completely prevented.

In addition, one side of the abnormality level detection chamber 32 is connected to the rear end of the distribution path 36 and the venturi tube part 321A, and the washing water flowing up to the upper level of the abnormality level detection chamber 32 is 1 to be introduced into the bottom of the detection chamber. By installing the car inflow path 321 to detect the water level when the abnormal water level in the reservoir (11B) occurs, and when the drainage of the wash water by the suction power generated in the venturi pipe portion 321A, such as the appropriate water level detection chamber 31 Washing water in the detection chamber is aspirated.

The second inflow path 322 is connected to a communication path 36A provided in the middle of the distribution path 36 at the other side of the abnormal water level detection chamber 32 to allow the washing water to flow into the upper portion of the abnormal water level detection chamber 32. If the inflow path is blocked as in the appropriate water level detection chamber 31 is provided that the replacement of the wash water.

Therefore, when the water level is not detected in the proper water level detection chamber 31 or when the opening / closing member 34A fails, the water level is sensed again in the water level detection chamber 32 to control the water supply so that the water supply control is stable and reliable. Productivity will be improved.

In addition, when the first and second inflow paths are clogged in each of the appropriate water level detection chamber 31 and the abnormal water level detection chamber 32, the communication path 36A of the distribution path 36 and It is equipped with a third inlet 313, 323 connected to replace the wash water inflow.

As described above, according to the water supply control device of the dishwasher according to the present invention, a water supply control device configured separately from the water tank is configured to accurately detect the water level regardless of the height of the water surface, and detect the proper water level detection chamber and the abnormal water level therein. It is equipped with a seal to detect water supply in 1st and 2nd stage to improve the productability such that the water supply control is stable and sure and the malfunction is completely eliminated.

Claims (5)

A buoyancy member is installed in each of the proper and abnormal water level detection chambers, which are separated from the water tank of the dishwasher, and the buoyancy member is raised and lowered according to the water supply level. A water supply control device for a washing machine, comprising: a water supply chamber for supplying washing water to an upper portion of a reservoir and a lower portion of a reservoir, and at the same time, supplying the water to the water supply control apparatus through a distribution passage to each of the appropriate level detection chamber and the abnormal level detection chamber. The water supply control device of the dishwasher, characterized in that the washing water is distributed to the left and right side and provided with at least one inflow path to allow the primary and secondary flows. According to claim 1, wherein the first inflow path to the washing water flows into each of the appropriate water level detection chamber and the abnormal water level detection chamber to the upper level of the water level detection chamber is configured to run through the bottom of the water level detection chamber, Water supply control device of the dishwasher, characterized in that configured to flow into the bottom of the sensing chamber. According to claim 1 or claim 2, wherein a venturi pipe portion is provided between the wash water distribution passage and the first inlet of each of the appropriate water level detection chamber and the abnormal water level detection chamber, the washing water in each water level detection chamber during the drainage of the wash water is based on the siphon principle. Water supply control device of the dishwasher, characterized in that configured to be drained by. The water supply control device according to claim 1, wherein each of the titration and abnormal water level sensing chambers has a step for allowing the buoyancy member to be separated from the bottom of the water level sensing chamber at the time of the most strongest movement. A water supply control device of a dishwasher, comprising: a water supply valve for intermitting the water supply of the washing water, a water tank and a water level sensing means, and a water supply port and an outlet for supplying the water to the water tank and the lower part, and between the water supply port and the discharge port. A washing water supply device for a washer provided with a water supply chamber having a overflow wall for reducing the water supply pressure of the washing water fed from the water supply valve and supplied to the upper portion of the reservoir.

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