KR20040023104A - Device for stopping water supply for dishwasher - Google Patents

Abstract

PURPOSE: A water-supply cutoff device for a dish washer is provided to cut off the supply of water when a water-supply valve is out of order by using a floating body. CONSTITUTION: A water-supply cutoff device for a dish washer is composed of a water-supply valve(350) having a water-supply passage and a solenoid valve unit for controlling the water-supply passage, a tub having an communication unit, a base(300) having a sump assembly(310) connected to the lower part of the communication unit, a drainpipe protruding upward from the sump assembly, a floating body(360) installed at the top of the base, a connecting rod(362) connected to the top of the floating body, and an opening/closing unit. The opening/closing unit opens/closes the water-supply passage according to the operation of the connecting rod.

Description

Device for stopping water supply for dishwashers

The present invention relates to a dishwasher, and more particularly, to a water cutoff device configured to stop supply of washing water separately when water supply cannot be stopped due to a failure of a water supply valve inside the dishwasher.

First, a configuration of a general dish washer will be described with reference to FIG. 1. As shown, the dishwasher includes a main body 10 having a space for washing dishes therein and a door 20 for opening and closing the opened front surface of the main body.

The inner casing is formed by the tub 16 inside the main body 10. Inside the tub 16, the upper rack assembly 12a and the lower rack assembly 12b for placing dishware to be washed are detachably installed. And the upper injection arm 14a and the lower part arm 14b for discharging wash water to the tableware mounted on the said rack assembly 12 are provided in each rack assembly 12 lower part. Therefore, the washing water supplied from the water pipe is sprayed through the injection arm 14, the washing of the dishes proceeds.

The upper injection arm 14a is installed under the upper rack assembly 12a and has a plurality of injection holes for injecting the washing water so that the supplied washing water is sprayed upward toward the upper rack assembly 12a. . Alternatively, the upper injection arm 14a may also form a spray hole on the lower surface of the upper injection arm 14a to spray the washing water downward toward the lower rack assembly 12b. And the lower arm 14a is provided below the lower rack assembly 12b, and sprays washing water toward the upper part of the lower rack assembly 12b.

As such, after the dish washing is completed using the washing water, the washing water should be drained to the outside of the dishwasher. Such drainage is performed through the drain hose by the operation of the drain pump installed inside the dishwasher.

In the dishwasher as described above, water is started to start the dishwashing. As for the water supply of such a dishwasher, water from a water pipe starts to be supplied by control of a water supply valve. However, if the water supply is not stopped due to the failure of the water supply valve composed of the solenoid valve, the washing water is excessively supplied to the inside of the dishwasher, overflowing from the dishwasher, and eventually there is a risk of water leakage throughout the kitchen. In particular, if there is no user of the dishwasher and the above problems occur, the use concerns that the whole kitchen can be flooded.

The present invention is to solve the above conventional problems, when the water supply can not be blocked due to the abnormal operation of the water supply valve consisting of a solenoid valve, when the water level accumulated in the dishwasher is more than a predetermined level can block the water supply internally. It is a basic object to provide a water shutoff device configured to be.

The object of the present invention is to contemplate that the water supply valve can be shut off using a buoyant body floating in the water when the level of water accumulated in the inside of the dishwasher reaches a predetermined level or more.

1 is a perspective view of a typical dishwasher.

Figure 2 is an exploded perspective view of the dishwasher according to the present invention.

3 is a perspective view of a base portion of the present invention.

Figure 4 is a perspective view of the main portion of the water supply valve portion of the present invention.

5 is a cross-sectional view of the water supply valve portion of the present invention.

Explanation of symbols on the main parts of the drawings

116 ..... Inner Case 300 ..... Base

302 ..... Bottom of base 310 ..... Sump assembly

312 ..... water pump 315 ..... drain

350 ..... water supply valve 360 ..... buoyant body

362 ..... Connection Rod 364 ..... Guide

370 ..... Cap 372 ..... Magnet

374 ..... Plunger Housing 376 ..... Plunger

380 ..... Diaphragm Wd ..... Water Supply Path

Water supply shutoff device according to the present invention for achieving the above object is provided with a water supply passage through which the water supplied to the interior of the dishwasher flows, and to control the water supply passage, the water supply valve having a solenoid valve portion therein and ; A tub formed at a bottom thereof, the communicating portion forming an inner surface of the dish washing machine; A base having a sump assembly connected to the lower part of the communication part in a watertight state on an upper surface thereof; A drain pipe formed to protrude upward from the sump assembly and communicating toward a lower base; A buoyancy body installed on the base; A connecting rod connected to an upper portion of the buoyancy body; In accordance with the ascending operation of the connecting rod, it is configured to include an opening and closing means for closing or opening the water supply passage.

According to an embodiment of the opening and closing means, the magnet is installed at the end of the connecting rod; A plunger installed to move up and down inside the plunger housing corresponding to the lower portion of the magnet; Is installed in the lower portion of the plunger, and comprises a diaphragm for opening and closing the water supply passage; When the magnet rises by the rise of the buoyancy body, the plunger is spaced apart from the magnet and descends to stop the water supply by blocking the water supply passage.

And the height of the drain pipe, it is preferably formed to be less than the height of the water level is more than the highest level of water accumulated in the sump assembly during the normal washing process, around the tub of the dishwasher.

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

First, referring to FIG. 2, the overall configuration and drainage of the dishwasher will be described. As illustrated, the outer casing of the dishwasher includes an upper surface 110 and a pair of side surfaces 112 provided on both lower sides of the upper surface 110.

A tub 116 is installed inside the outer casing, and the tub 116 is a portion for substantially dishwashing inside. Inside the tub 116, the upper rack assembly 210 and the lower rack assembly 212 for placing the dishes to be washed are detachably installed.

The base 300 is installed below the tub 116. Referring to FIG. 3, which is an enlarged perspective view of the portion of the base 300, as shown more clearly, the washing pump 312 and the drain pump 314 and the heater assembly 316 are disposed on the upper portion of the base 300. The sump assembly 310 is installed. In addition, one side of the base 300 is provided with a water softener 330 for softening the wash water.

The sump assembly 310 is a portion that maintains the washing water for washing at a constant level. The upper sump assembly 310 is installed to be in close contact with the bottom surface of the communicating portion 118 opened at the bottom of the tub 116, and the washing water sprayed from the inside of the tub 116 is applied to the sump assembly 310. Configured to assemble.

A holder 226 is installed at an upper portion of the sump assembly 310, and the holder 226 distributes the washing water supplied by the washing pump 312 to the washing water guide 220 or the lower arm arm 224. It can be supplied while supplying.

In addition, the washing water guide 220 for supplying the washing water is installed in the longitudinal direction on the inner rear surface of the tub 116. The water supplied through the washing water guide 220 is supplied to the upper injection arm 222 in which a plurality of injection holes are formed. The upper injection arm 222 is installed below the upper rack assembly 210 by the holder 223 to spray the supplied water toward the upper rack assembly 210.

Next, let's look at the overall flow of water in the dishwasher. Water supplied through the water pipe is guided into the air guide 320 through the inlet 326. Water flowing along the passage inside the air guide 320 is supplied into the sump assembly 310 via the water softener 330. When the washing pump 312 operates, the washing water is distributed to the washing water guide 220 or the lower arm 224 in the holder 226 and is supplied at a constant pressure.

The water supplied to the washing water guide 220 is sprayed toward the upper rack assembly 210 while being sprayed through the upper spray arm 222, and the water supplied to the lower rack arm 224 is the lower rack assembly 212. Sprayed towards. The water sprayed from the inside of the tub 116 flows to the bottom surface and is collected again by the sump assembly 310 as described above.

The washing water is repeatedly circulated while maintaining a constant water level in the sump assembly 310, and foreign matter contained in the water in the circulation process is filtered by a filtering device installed in the sump assembly 310. When the cleaning is completed while repeating this process, the water inside the dishwasher should be drained.

When draining, the drain pump 314 attached to one side of the sump assembly 310 is operated, and flows to the inner hose 322 connecting the sump assembly 310 and the air guide 320 by the operation. Goes. Water inside the inner hose 322 is guided to the drain hose 324 through the interior of the air guide 320.

The drain hose 324 is guided to the outside of the dishwasher through the guide hole 302 formed on the rear surface of the base 300. The drain hose 324 is installed to penetrate the guide hole 302 in a state supported by the holder 340.

The supply of the washing water in the dishwasher having the above-described supply of the washing water and the drainage structure is made through a water supply valve 350 connected to the water pipe. The water supply valve 350 is composed of a solenoid valve is configured to supply the wash water by the electrical control, or to block the supply of the wash water.

According to the present invention, a drain pipe 315 is formed on the upper part of the sump assembly 310 for maintaining a constant water level for dish washing. The drain pipe 315 is formed to have a constant height at the top of the sump assembly 310, and the lower end thereof is configured to communicate with the bottom surface 302 of the base 300 through the sump assembly. Accordingly, when water flows through the upper portion of the drain pipe 315, the water accumulates on the bottom 302 of the base 300. The base 300 is formed of a synthetic resin material, and is molded to contain water up to a predetermined level on the bottom surface 302.

A buoyancy body 360 is provided on the base bottom surface 302. When the water leaking inside the base 300 is accumulated, the buoyancy body 360 may be formed of a material having buoyancy that can float on the surface thereof, and may be formed of, for example, a styrofoam material.

A connection rod 362 is installed on an upper portion of the buoyancy body 360, and the connection rod 362 is supported by the guide 364 to enable vertical movement. The guide 364 is integrally formed with the casing 352 of the water supply valve 350 to support the connecting rod 362 so as to vertically move through the inside.

When the buoyancy body 360 is floated by water, the connection rod 362 is also floated together. As such, when the connecting rod 362 is raised upward, the water supply passage Wd (see FIG. 5) inside the water supply valve 350 is substantially blocked.

The upper end of the connecting rod 362 is bent downward into the cap 370 installed inside the water supply valve. Next, referring to FIG. 5, an embodiment of the structure in which the water supply passageway Wd is blocked in accordance with the upper movement of the connection groove 362 will be described in more detail.

The solenoid valve unit 353 is installed inside the water supply valve 350, and the solenoid valve unit 353 operates to substantially supply or block the washing water. The solenoid valve portion 353 is the same as that attached to the conventional water supply valve 350. Since the internal configuration of the solenoid valve unit 353 is known using the solenoid principle, a detailed description thereof will be omitted.

And the configuration related to the above-described buoyancy body 360 is to be installed to block the water supply separately, if the water supply can not be blocked due to the malfunction of the solenoid valve unit 353.

The lower end of the connecting rod 362 is bent downward, and a magnet 372 is provided on the end side thereof. The end of the connecting rod 362 and the magnet 372 are provided inside the cap 370 that is fastened by a screw to the upper portion of the valve casing 352. Therefore, the raising and lowering of the connection rod 362 is connected by the operation of raising and lowering the magnet 372.

The cap 370 is installed above the casing 352 of the water supply valve 350. A water supply passage Wd for supplying the washing water is formed in the casing 352 of the water supply valve 350, and the water supply passage may be opened and closed by the solenoid valve unit 353. The water supply passage Wd may be opened or closed by a water supply shutoff device including a diaphragm 380 according to the present invention when the solenoid valve unit 353 is abnormally operated.

And inside the water supply valve 350, a separate plunger 376 capable of vertical movement is provided. The plunger 376 is installed to be moved up and down inside the plunger housing 374 provided at the upper portion of the casing 352, and the diaphragm 380 is provided at the lower end of the plunger 376 via a diaphragm holder 382. Is equipped. The diaphragm holder 382 and the diaphragm 380 itself are well known, and their operation is also well known, and thus descriptions of the principles and functions thereof will be omitted.

In the above embodiment, as the connection rod 362 rises, it can be seen that a separate plunger 376 and the diaphragm 380 is used as a configuration for blocking the water supply passageway (Wd). However, in conjunction with the rise of the connecting rod 362, the configuration for blocking the water supply passage (Wd) is of course many other modifications are possible.

Next, the overall operation of the water supply shutoff apparatus according to the present invention will be described.

When water is supplied through the water supply valve 350, the internal water supply passage Wd is opened by the operation of the solenoid valve unit 353 described above. 5 is a state in which water can be normally supplied, and in this state, since the magnet 372 is lowered downward like the buoyancy body 360, the plunger 376 made of a magnetic material is the magnet. The state located at the upper side toward the (372) side is maintained.

In this state, the diaphragm 380 opens the water supply passageway Wd, and since the diaphragm 380 moves upward, the diaphragm 380 moves upward to open the water supply passageway Wd. It is opening up.

As such, when water is supplied into the dishwasher by the operation of the water supply valve 350 and a predetermined amount of water accumulates inside the sump assembly 310, the water supply passage Wd is controlled by the solenoid valve unit 353. ) The water supply should be stopped. However, when accurate control is not performed due to a failure of the solenoid valve unit 353, the water supply passage Wd is kept open, and the washing water is supplied to the sump assembly 310 so that the water level continues to rise.

When the level rises above the upper end of the drain pipe 315 formed in the sump assembly 310, water of the portion flows downward through the drain pipe 315. The drain pipe 315 is connected to the bottom of the base 300, so that water flowing along the drain pipe 315 eventually accumulates on the bottom 302 of the base 300.

When water rises on the bottom surface 302 of the base 300 in this way, the height of the buoyancy body 360 also rises as the water level. When the buoyancy body 360 floats upward, the magnet 372 attached to the lower end of the buoyancy body 360 is gradually raised through the connecting rod 362.

When the magnet 372 moves upward from the inside of the cap 370, it is completely spaced apart from the plunger 376 inside the plunger housing 374. Due to the upward movement of the magnet 372, the magnetic force generated in the magnet 372 does not reach the plunger 376. Therefore, the plunger 376 moves downward from the inside of the plunger housing 374 to block the central portion of the diaphragm 380. When the hole in the central portion of the diaphragm 380 is blocked by the lower end of the plunger 376, the pressure of the water entering through the circumferential hole 380b of the diaphragm 380, as is known from the principle of the diaphragm valve 380 is the top The downward acting in the diaphragm 380 substantially blocks the water supply passageway (Wd) is no longer supplied with the wash water.

In this state, it is apparent that water accumulated in the base 300 may be drained by the drain pump 314.

In addition, in order for the solenoid portion 353 of the failed water supply valve 350 to be repaired and operated normally, it must be in a state as shown in FIG. 5. This state is a state in which the buoyancy body 360 is located at the lowest end when water is completely drained into the base 300.

In this state, since the connecting rod 362 is lowered like the buoyancy body 360, the magnet 372 is also substantially lowered as well. In this state, the plunger 376 made of magnetic material is moved upward by the magnetic force of the magnet 372. In the state where the plunger 376 moves upward, since the hydraulic pressure acting on the bottom surface of the diaphragm 380 is greater than the hydraulic pressure acting from the top to the bottom, the diaphragm 380 substantially opens the drain passage Wd and cuts the dish. The water can be supplied to the inside of the washer.

And the water supply amount will be controlled by the normal operation of the solenoid valve portion 353. If the solenoid valve portion 353 is malfunctioned to prevent the water supply, the bay as described above will be repeated.

Here, the height of the drain pipe 315 will be described. In the normal washing process, a predetermined level must be maintained inside the sump assembly 310. And while the constant level is maintained in the sump assembly 310, while the washing is performed, the washing water should not escape through the drain pipe 315.

Therefore, it is natural that the height of the drain pipe 315 should have a height of at least the highest high water level within the range of the reference water level at which the washing is performed.

In the dishwasher, when the dishwashing is performed inside the tub, it is sealed to be waterproof up to a certain height. In addition, if the water level inside the water is higher than the waterproof part, the phenomenon of water leakage occurs in the dishwasher itself. That is, if the height of the drain pipe 315 is too high, water leakage of the dish washing machine occurs. Therefore, the maximum height of the drain pipe 315 should be at least below the height at which leakage does not occur in the tub inside the dishwasher.

By setting the height of the drain pipe 315 in this way, if the reference water level range for washing in the sump assembly 310 exceeds the water to drain the water through the drain pipe 315 to the lower base 300 It will be possible. After the water is drained to the base 300, a series of operations by the buoyancy body 360 are as described above.

As described above, in the present invention, when the water supply valve for blocking the washing water supplied to the inside of the tub does not operate normally, the basic technical idea is to guide the water to the base and to block the water supply valve using a buoyancy body. It can be seen that. Within the scope of the basic technical idea of the present invention, many other modifications are possible to those skilled in the art, and the present invention should be interpreted based on the appended claims. Self-explanatory

According to the present invention as described above, when the washing water supplied for washing the dishes, can not be blocked due to the failure of the water supply valve 350, by the water supply blocking device according to the present invention, the supply of the washing water is configured to be blocked. It can be seen. In addition, since the water shutoff device according to the present invention operates by using the water level accumulated on the base 300, it does not need a separate power supply device. Therefore, it can be seen that by applying the present invention, there is no fear of water leakage due to the excessive supply of the washing water, thereby substantially increasing the reliability of the product. In addition, the water supply shutoff apparatus of the present invention has a simple structure that does not substantially require a power source, so that it is possible to expect an advantage that can be produced at low cost as a whole.

Claims (6)

A water supply valve having a water supply passage through which water supplied to the inside of the dishwasher flows, and having a solenoid valve portion therein to control the water supply passage; A tub formed at a bottom thereof, the communicating portion forming an inner surface of the dish washing machine; A base having a sump assembly connected to the lower part of the communication part in a watertight state on an upper surface thereof; A drain pipe formed to protrude upward from the sump assembly and communicating toward a lower base; A buoyancy body installed on the base; A connecting rod connected to an upper portion of the buoyancy body; In accordance with the ascending operation of the connecting rod, the water supply shutoff device of the dishwasher comprising a closing means for closing or opening the water supply passage. A water supply valve having a water supply passage for supplying water to the inside of the dishwasher; First opening and closing means for opening and closing the water supply passage by an electrical signal; A tub formed at a bottom thereof, the communicating portion forming an inner surface of the dish washing machine; A base on which a sump assembly connected to the lower part of the communication part in a watertight state is mounted on an upper surface, and water overflows from the sump assembly; A buoyant body installed on the base and floating in water to be collected; And a second opening / closing means for opening and closing the water supply passage in association with the falling position or the rising position of the buoyancy body. According to claim 1, The opening and closing means; A magnet installed at an end of the connection rod; A plunger installed to move up and down inside the plunger housing corresponding to the lower portion of the magnet; Is installed in the lower portion of the plunger, and comprises a diaphragm for opening and closing the water supply passage; When the magnet is raised by the rising of the buoyancy body, the plunger is spaced apart from the magnet is lowered so that the diaphragm block the water supply passage. The method according to claim 1 or 3, The height of the drain pipe, the water shutoff device of the dishwasher is formed to be less than the height of the water level is accumulated in the sump assembly during the normal washing process, less than the leaking water around the tub of the dishwasher. The method according to claim 1 or 3, The connecting rod, the water supply shutoff device of the dishwasher, characterized in that passing through the inner side of the guide formed by the casing (352) of the water supply valve. The method of claim 3, End of the connecting rod is bent downwards, the magnet is attached to the end, the connection rod and the water supply of the dish washer, characterized in that the assembly inside the cap 370 is installed on the top of the casing of the water supply valve Device.