KR100269386B1 - Device for prevention siphon in electronic dish washer - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, in order to prevent leakage and simplify the manufacturing process in the siphon preventing device of the dishwasher which functions to block the drainage of the washing water in the washing tank to the outside when the drainage pump is stopped. Simplified piping structure.

The present invention for this purpose is a siphon hose for connecting the drain hose and the drain hose for discharging the washing water in the cleaner body, the siphon hose and the washing tank is connected to the wash water is drained through the siphon hose by the air pressure at the stop of the drain pump A dishwasher having an air hose to block the thing; The siphon hose 100 is integrally formed, and the upper portion of the siphon hose 100 is formed by forming a communication tube 101 to directly insert the air hose.

Description

Siphon prevention device of dishwasher

The present invention relates to a dishwasher, and more particularly, in order to prevent leakage and simplify the manufacturing process in the siphon preventing device of the dishwasher which functions to block the drainage of the washing water in the washing tank to the outside when the drainage pump is stopped. Simplified piping structure.

In general, the dishwasher is a kitchen appliance that automatically cleans dishes and cutlery soiled by food.

Such a dishwasher forms an outer shape of the washing machine main body 1 as shown in FIG. 1, and an outer case 2 having a door 2a on the front side thereof, and a washing tank 3 installed in the outer case to supply washing water. ), Upper and lower spray nozzles 4a and 4b rotatably installed by the spraying force of the washing water on the upper and lower portions of the washing tank, and dishware to be installed on each of the upper and lower spray nozzles for washing. Shelf (5), a washing pump (6) which is installed on the outer lower portion of the washing tank to provide power for supplying the washing water to the upper and lower spray nozzles (4a) and (4b), and the outer lower portion of the washing tank (3) Is installed in the drain is composed of a drain pump (7) for providing power for discharging the contaminated water to the outside of the washing machine body (1).

Therefore, when the dish is placed on the shelf 5 in the washing tank 3 and the washing mode is selected, the water supply valve 8 is opened to wash the water into the washing tank 3, and the water is supplied by the set water level. When the washing pump 6 is activated, the washing water in the washing tank 3 is introduced through the inlet hose 6a of the washing pump, and the introduced washing water is connected to the upper and lower spray nozzles 4a and 4b. Supply via 6b).

The washing water supplied to the upper and lower spray nozzles 4a and 4b is sprayed toward the respective shelves 5 to wash the dishes placed on the shelves, and is also sprayed by the spray pressure of the washing water. It provides the rotating power of the nozzles 4a and 4b.

As described above, when the washing stroke is completed, the drain pump 7 is operated to discharge the water used for washing to the outside of the washing machine body 1 through the drain pipe, and when the draining is completed, the drain pump 7 is stopped and washed. Rinse the dishes while performing the same process as once more, and then all the washing processes are completed by the process of draining the rinsing water.

On the other hand, the dishwasher prevents the siphon (Siphon), which serves to block the flow path so that the washing water is not discharged to the air during the washing stroke or rinsing stroke, and on the contrary, opening the flow path so that the washing water can be discharged to the outside during the drainage stroke The device is installed.

As shown in FIG. 2, the siphon prevention device includes a curved siphon hose 10 connecting the drain hole 7b of the drain pump 7 and the drain hose 9 through the air, and the siphon hose. It consists of an air hose 11 connecting the upper center of the washing tank (3).

In particular, the siphon hose 10 is divided into both sides based on the air hose 11, and is connected to the air hose 11 by the connector 12 and the connector caulking 13, the drain pump 7 Connection portions between the drain port 7b and the nipple 14 are respectively pressed by the clamp 15 to prevent leakage.

Therefore, when the drain pump 7 is operated, the suction water 7a of the drain pump is forcibly sucked in the washing water in the washing tank 3 and discharged through the drain hole 7b, and the drained washing water is drained from the drain pump 7. It is discharged to the outside through the drain hose (9) connected to the siphon hose by the siphon hose (10) and the nipole (14) connected to the (7b), a small amount of washing water is discharged to the air hose by the drain pressure ( 11) is re-introduced into the washing tank (3) again.

When the drain pump 7 is stopped, the air in the washing tank 3 is introduced into the air hose 11, so the inflowed air is acted on the siphon hose 10 in communication with the air hose under the air pressure, thereby It blocks the wash water from draining out through the siphon hose.

However, in the conventional siphon prevention device as described above, since the siphon hose 10 is separated into two, the 3-way type connector 12 and the connector caulking 13 for the connection with the air hose 11. Parts such as the siphon hose 10 and the drain pump 7, the siphon hose 10 and the nipple 14, the connector 12 and air to prevent leakage Since the connection portion of the hose 11 had to be pressed by the clamp 15, respectively, there was a problem in that the number of parts was increased.

In addition, there must be disadvantages in terms of productivity and production cost since each facility must be equipped to manufacture several parts.

In addition, the connection portion between the connector 12 and the siphon hose 10 has a problem that the pipe diameter is reduced and clogging is caused by foreign matters, thereby weakening the pressure regulating function.

The present invention has been made to solve the above-mentioned conventional problems, the object is to simplify the configuration of the siphon preventing device.

The present invention for achieving the above object is a siphon hose connecting the drain pump and the drain hose for discharging the washing water in the washing machine body, and the siphon hose by the air pressure at the stop of the drain pump by connecting the siphon hose and the washing tank A dishwasher having an air hose for blocking the drainage of the washing water through; The siphon hose is integrally formed, and an upper portion of the siphon hose is provided so as to form a communication tube to directly insert the air hose.

1 is a longitudinal sectional view showing an example of a typical dishwasher

Figure 2 is a cross-sectional view of the conventional siphon prevention device

Figure 3 is an exploded cross-sectional view of the siphon preventing device of the present invention

4 is a cross-sectional view of the main portion of the coupling state of FIG.

5A is a plan view of a state in which the siphon hose and the holder can be separated

Figure 5b is a plan view of the siphon hose and the holder is coupled

Explanation of symbols for main parts of the drawings

1: washing machine body 1a: fixing groove

7: drain pump 7b: drain

7c: connector 9: drain hose

11: air hose 100: siphon hose

101: communication tube 102: locking jaw

102a: single sided surface 110: holder

111: elastic piece 112: hole

113: locking piece 114: screw hole

120: screw

Figure 3 is an exploded cross-sectional view of the siphon preventing device of the present invention, Figure 4 is a cross-sectional view of the coupling state of Figure 3, Figure 5a is a plan view of a state capable of separating the siphon hose and the holder, Figure 5b is a siphon hose and the holder is coupled As a plan view of the state, it will be described in detail with respect to the siphon prevention apparatus of the present invention with reference to these accompanying drawings.

The siphon prevention device of the present invention is formed integrally by injection molding the siphon hose 100 without a seam, and formed a communication tube 101 so that the air hose 11 can be directly inserted in the upper position.

In addition, one end of the siphon hose 100 is fixed by the heat pump and the drain pump 7, the other end is to be coupled to the washing machine main body 1 by a fixing means, the other end of the drain hose (9) Is connected directly.

As described above, in order to fix the one end of the siphon hose 100 and the drain port 7b of the drain pump 7 by the heat fusion, the siphon hose 100 is disposed on the drain port 7b side of the drain pump 7. A connecting pipe 7c was formed to fit one end, and heat was fused to the inner circumferential surface of the connecting pipe and the outer circumferential surface of the siphon hose 100 in contact with it.

At this time, when the connector tube 7c and the siphon hose 100 inserted therein are heated as a whole, a heat deformation may occur and the appearance thereof may be deformed. Therefore, a connection between the connector tube 7c and the siphon hose 100 is connected. Only the proper thickness of the inner circumferential surface of the tube and the appropriate thickness of the outer circumferential surface of the siphon hose were locally heated so that the overall appearance was not deformed.

On the other hand, the fixing means is a locking projection 102 protruding on the outer peripheral surface of the connection portion with the drain hose 9 of the siphon hose 100 and the upper locking projection of the siphon hose 100 so as not to flow down The holder 110 is formed in the elastic piece 111 having elasticity on one side and composed of a fixing groove (1a) formed in the washing machine body (1) so that the holder is inserted.

In order to prevent the holder 110 from flowing down by the locking jaw 102, the hole 112 of the holder may be smaller than the outer diameter of the locking jaw 102.

However, in the above case, since there is a structural problem in that the holder 110 cannot be separated from the siphon hose 100 due to the interference of the locking jaw 102, the hole diameter of the hole 112 of the holder 110 is improved. It is larger than the outer diameter of the locking jaw 102 but cuts both sides of the locking jaw to form a one-sided surface (102a), the hole 112 of the holder 110 is larger than the gap between the two sides of the one side, the locking jaw 102 By forming the engaging piece 113 to be smaller than the outer diameter of the, the holder 110 is rotated so that the engaging piece 113 is in the same position as the one-sided surface (102a) of the locking jaw 102 or the engaging piece ( 113 and the one-sided surface (102a) to shift the position so that the holder 110 and the siphon hose 100 can be selectively separated.

According to the present invention configured as described above, one end of the integrated siphon hose 100 is fixed to the connection pipe 7c formed integrally with the drain port 7b side of the drain pump 7 by heat fusion.

When the siphon hose 100 is inserted into the connection pipe 7c during the heat fusion, for example, the proper thickness of the inner circumferential surface of the connection pipe 7c and the appropriate thickness of the outer circumferential surface of the siphon hose 100 in contact therewith By locally heating and fusion, the external shape of the connection part was prevented from being thermally deformed.

On the contrary, in the case where the inner circumferential surface of the siphon hose 100 is connected to the outer circumferential surface of the connecting pipe 7c, only the proper thickness of the outer circumferential surface of the connecting pipe 7c and the inner circumferential surface of the siphon hose 100 in contact therewith are heated. By fusion.

On the other hand, the other end of the siphon hose 100 is directly connected to the drain hose (9), the holder 110 is inserted into the upper side of the locking jaw 102 formed on the other end so as not to flow down the locking jaw. In one state, by applying an external force to the elastic piece 111 formed on one side of the holder 110, forced compression into the fixing groove (1a) of the washing machine body (1) and remove the external force, the elastic piece is original by its own elastic force By the force restored to the position of the to maintain the state fitted in the fixing groove (1a).

As described above, the fixing force of the other end of the holder 110 depends on the elastic force of the elastic piece 111. Since the drainage pressure of this portion is not so large, even the fixing structure as described above can maintain a sufficient fixing force, but the fixing force When to reinforce the formation of the plurality of screw holes 114 in the holder 110, it is also possible to combine the holder and the cleaner body 1 by the screw 120 is of course possible.

In addition, one end of the air hose 11 is inserted directly into the communication tube 101 integrally formed on the upper portion of the siphon hose 100, and the other end of the communication tube 101 is connected to one side of the washing tank (3). In addition, it is also possible to strengthen the binding force at each connection by using a clamp applied in the past for confidentiality.

Since the siphon hose 100 and the air hose 11 have one connection part, the siphon hose 100 and the air hose 11 are simpler than the structure in which the existing three parts are connected. Do.

On the other hand, in order to insert the holder 110 above the locking jaw 102 of the siphon hose 100, as shown in Figs. 5a and 5b by rotating the holder 100, the locking piece 113 of the locking jaw 102 If it is located at the same position as the one-sided surface (102a), since the hole 112 of the holder 100 is larger than the locking jaw 102, it is out of the interference of the locking jaw and can be fitted and disassembled, and conversely, the locking of the holder 100 If the position of the locking piece 113 and the one-sided surface (102a) is shifted in the state of being fitted upward of the jaw (102), the locking piece (113) is caught by the locking jaw (102), so that the downward movement is regulated. 110 can be selectively disassembled and coupled from the siphon hose 100.

The present invention as described above significantly reduces the number of joints, thereby minimizing the number of parts, and reduces the manufacturing cost, and improves the reliability of the product by reducing the frequency of leakage in proportion to the number of joints A side effect can be obtained.

In addition, since the flow path is integrated, there is an effect of minimizing flow resistance to prevent the flow path from being clogged by foreign matter.

Claims (7)

A siphon hose connecting the drain pump and the drain hose for discharging the washing water in the cleaner body, and the siphon hose and the washing tank are connected to the air to block the drainage of the wash water through the siphon hose by the air pressure when the drain pump is stopped. A dishwasher with a hose; The siphon hose is integrally formed, and the upper part of the siphon preventing device of the dishwasher, characterized in that to form a communication tube to directly insert the air hose. The method of claim 1, One end of the siphon hose is coupled to the drainage pump by heat fusion, and the other end is the siphon preventing device of the dishwasher, characterized in that coupled to the washer body by a fixing means. The method of claim 2, In order to join the siphon hose and the drain pump by heat welding, A siphon prevention device of the dishwasher, characterized in that the fitting pipe is formed at the drain port side of the drain pump so that one end of the siphon hose can be inserted therein, and heat-bonded to the inner circumferential surface of the fitting pipe and the outer circumferential surface of the siphon hose in contact therewith. . The method of claim 3, wherein Local heat of the fitting pipe and the inner circumferential surface of the fitting pipe and the inner circumferential surface of the siphon hose so that the inner circumferential surface of the fitting pipe and the inner circumferential surface of the siphon hose do not cause thermal deformation during siphoning. Prevention device. The method according to claim 1 or 2, The fixing means, A locking projection protruding from the outer circumferential surface of the connection portion with the drain hose of the siphon hose, The holder is inserted into the upper portion of the locking jaw of the siphon hose so as not to flow down to the locking jaw, the holder having an elastic piece having elasticity on one side; The siphon preventing device of the dishwasher, characterized in that the portion formed with the elastic piece of the holder and the opposite side is composed of a fixing groove formed in the washer body to be fitted by the elastic force. The method of claim 5, The siphon preventing device of the dishwasher, characterized in that the plurality of screw holes formed in the holder to be fixed by the washing machine body and the screw. The method of claim 5, The hole diameter of the hole for inserting the holder into the siphon hole is larger than the outer diameter of the locking jaw, and one side surface is formed on both sides of the locking jaw, and both sides of the hole are larger than the distance between the two side surfaces, If the locking piece is formed to be smaller than the outer diameter so that the locking piece is in the same position as the one side of the locking jaw, the hole is not caught by the locking jaw. The siphon preventing device of the dishwasher, characterized in that to prevent the separation from the siphon hose.