KR20050122364A - A leakage preventing structure of a dish washer - Google Patents

Abstract

The present invention relates to a dish washer, and more particularly, to a leak prevention structure for preventing the washing water leaks through the motor shaft through grooves in the sump.

The leakage preventing structure of the dish washing machine according to the present invention includes a washing motor; A sealing member inserted into the rotating shaft of the washing motor; And a sump housing in which a space for washing water is formed and a sealing case for inserting the sealing member into a bottom of the bottom is formed.

The leakage preventing structure of the dish washing machine according to the present invention has the effect of preventing the leakage of the washing water flowing on the outer peripheral surface of the motor shaft.

Description

A leakage preventing structure of a dish washer

The present invention relates to a dish washer, and more particularly, to a leak prevention structure for preventing the washing water leaks through the motor shaft through grooves in the sump.

In general, the dishwasher is a household appliance that allows the dishes to be washed by removing dirt from the dishes by the pressure of the washing water sprayed through the spray nozzle.

In detail, the dishwasher is a tub that is a space for washing dishes stored therein, a sump mounted on the bottom of the tub to store the washing water, and attached to one side of the sump to pump the washing water stored in the sump with the spray nozzle. It consists of a washing pump, a washing motor for driving the washing pump, a drainage pump for draining the dirty washing water after the washing is finished, and a drainage motor for driving the drainage pump.

Meanwhile, the washing pump may be mounted inside the sump, and the washing motor may be mounted on the bottom of the sump, such that the washing motor and the washing pump are positioned on the same vertical line. In detail, as described above, the motor shaft of the washing motor penetrates into the sump, and a pump is directly connected to the motor shaft. As the motor shaft rotates, the impeller in the pump rotates to pump the washing water.

Here, when the motor shaft is inserted through the bottom of the sump, a problem arises in that the washing water leaks on the outer circumferential surface of the motor shaft while the motor shaft is rotating.

In detail, as the motor shaft rotates, friction occurs with the sump, and the sealing function of the motor shaft and the sump decreases due to the friction. In addition, a gap may be generated between the motor shaft and the motor shaft through-groove of the sump, and a problem may occur that wash water is leaked through the gap.

In addition, when assembling the motor after the sealing member is fastened to the sump, the surface of the sealing member may be damaged, which may cause leakage.

The present invention has been made in order to solve the above problems, an object of the present invention is to provide a leak prevention structure equipped with a device for preventing the leakage of the washing water stored in the sump riding the outer peripheral surface of the motor shaft. .

In addition, an object of the present invention is to provide a leakage preventing structure in which the sealing member is not damaged during the assembly process by improving the assembly method and the assembly order of the sealing member.

Leakage preventing structure of the dish washer according to the present invention for achieving the above object is a washing motor; A sealing member inserted into the rotating shaft of the washing motor; And a sump housing in which a space for washing water is formed and a sealing case for inserting the sealing member into a bottom of the bottom is formed.

By the above configuration, the phenomenon of washing water leaking through the outer circumferential surface of the motor shaft mounted on the bottom of the sump is prevented, and the phenomenon of damaging the surface of the sealing member when assembling the sealing member mounted on the motor shaft is removed.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of other inventive inventions or the scope of the present invention can be easily made by adding, changing, or deleting other elements. I can suggest.

1 is a cross-sectional view schematically showing a dish washer provided with a leakage preventing structure according to the spirit of the present invention.

Referring to FIG. 1, the dishwasher 100 having a leakproof structure according to the present invention has an outer shape, a tub 110 having a dish washing tank formed therein, and a washing tank formed on the front surface of the tub 110. Door 111 for opening and closing the sump, and the sump 200 is formed in the center of the bottom surface of the tub 110 to store the wash water.

In addition, the water guide 140 and the lower nozzle 160 which is provided on the upper surface of the sump 200, the lower nozzle 160 is formed on the bottom surface of the washing tank and sprays the washing water upward. And an upper nozzle 150 attached to an upper portion of the water guide 140 and extending in a vertical direction from the water guide 140 and positioned at a central portion of the washing tub, and on a ceiling of the tub. Top nozzle 155 for spraying the washing water vertically downward is included.

In addition, the upper rack 120 is mounted on the upper side of the upper nozzle 150 so that the dishes are washed by the upper nozzle 150, and the lower nozzle 160 so that the dishes are washed by the lower nozzle 160. Lower rack 130 is mounted to the upper side of the) is included.

In detail, the upper rack 120 is supported by a rail (not shown) provided on the inner surface of the tub 110, and performs the front and rear movement.

Hereinafter will be described the operation of the dishwasher 100 according to the present invention.

First, the user opens the door 111 of the dishwasher 100 and pulls the upper rack 120 and / or lower rack 130 to the outside of the washing tank. In addition, dishes are stored in the racks 120 and 130. Then, the door 111 is closed and power is applied to the dishwasher.

On the other hand, when power is applied to the dishwasher 100 and a washing step is performed, washing water flows into the sump 200, and when the washing water inflow step is completed, the washing motor 330 operates. In addition, by rotating an impeller (not shown) provided in the washing pump (not shown) connected to the washing motor 330, the washing water is pumped to the lower nozzle 160 and the water guide 140.

In addition, the wash water pumped to the water guide 140 is finally moved to the top nozzle 155, the upper nozzle 150 is injected into the washing tank. In addition, the dishes stored in the racks 120 and 130 are washed by the sprayed washing water.

Here, the top nozzle 155 sprays the washing water vertically downward, and the upper nozzle 150 sprays the washing water vertically upward, thereby washing the dishes stored in the upper rack 120.

In addition, the lower nozzle 160 is sprayed the washing water vertically upward, the dishes stored in the lower rack 130 is washed. In addition, by forming an injection hole in the bottom surface of the upper nozzle 150, the washing water is sprayed in both the up and down directions, it can be configured to simultaneously wash the upper side of the tableware accommodated in the lower rack (130).

In addition, when the washing step is completed, the dirty washing water collected in the sump 200 is discharged to the outside of the dishwasher 100 through a drain pump (not shown).

In addition, when the washing water is discharged to the outside, clean washing water is introduced into the sump 200 again through an inlet, and sprayed through the spray nozzles 150 and 160 in the same manner as the washing step. The dishware is rinsed by the sprayed clean water.

In addition, when the rinsing step is completed, by going through the drying step, the washing operation is completed.

2 is an exploded perspective view of the dishwasher sump provided with a leak-proof structure according to the spirit of the present invention.

Referring to FIG. 2, the sump 200 of the dish washing machine equipped with a leak prevention structure according to the present invention includes a sump housing 290 in which raw water supplied from a washing water supply pipe outside the washer is stored, and the sump housing ( A disposer 280 connected to the motor shaft 331 (see FIG. 3) formed on the washing motor 330 (see FIG. 3) mounted on the bottom of the 290 and rotating the food, and the disposer 280. The pump case 256 is mounted on the upper side of the sump housing 290 and the washing water stored in the sump housing 290 is pumped, and the impeller 250 is accommodated in the pump case 256 to pump the washing water. In detail, the impeller 250 pumps the washing water while the motor shaft 331 is inserted in the center and rotates as the motor shaft 331 rotates.

In addition, it is mounted between the disposer 280 and the pump case 256, to prevent the bulky debris of the food waste crushed by the disposer 280 to enter the pump case (256). Mesh filter 270 is included.

In addition, the soil chamber 230 is formed to cover the upper surface of the pump case 256, the pumping flow path is formed for guiding the flow of the washing water pumped in the pump case (256).

In addition, the filter 220 is seated on the upper surface of the small chamber 230, the filter 220 is provided with a spray nozzle connector on one side of the central portion and the edge. In detail, the spray nozzle connector is combined with the spray nozzle to direct the washing water which has moved along the pumping flow path provided in the soil chamber 230 to each spray nozzle. In addition, a variioval valve 260 is installed at one side of the soil chamber 230 to selectively guide the washing water that has moved along the pumping flow path to each injection nozzle.

In detail, an edge portion of the filter 220 is provided with a washing water through hole 221 and a mesh filter 227 for primarily filtering food waste falling directly from the tableware. In addition, an insertion hole 223 for mounting the lower nozzle arm holder 210 coupled to the lower nozzle is formed at the center of the filter 220. In addition, a water guide insertion sleeve 226 into which the lower end of the water guide 140 is inserted is formed at one side edge with a predetermined height and diameter. In detail, as described above, the water guide 140 is formed in the shape of a roughly “ㄷ” from the bottom of the tub to the top of the tub in order to allow the washing water pumped by the washing pump 256 to be moved to the upper injection nozzle. Wash water flow tube.

In addition, the soil chamber 230 is formed on one side of the variuo valve seat 235 on which the vario valve 260 is seated, is formed by bending from the vario valve seat 235 on the upper side The lower nozzle guide flow path 236 is formed. In addition, a water guide guide flow path 237 is formed to allow the washing water to be guided to the water guide insertion sleeve 226 starting from the variio valve seat 235.

In addition, the edge side of the soil chamber 230 includes a drain passage 241 having a predetermined width and depth and formed along the shape of the soil chamber 230. And, one end of the drain passage 241 is formed with a turbidity sensor insertion groove 232 for mounting the turbidity sensor, the bottom surface of the other end is formed with a drain hole 242 connected to the drain pump and the sump bottom do. Here, the turbidity sensor is a pollution degree sensor installed on one side of the sump in order to detect the degree of contamination of the washing water in the state of washing.

In addition, a turbidity sensor guide flow path 233 is formed to allow the washing water pumped from the pump case 256 to be guided to the turbidity sensor inserted into the turbidity sensor insertion groove 232.

Meanwhile, the washing water falling into the washing water through hole 221 of the filter 220 is collected by the sump housing 290. In addition, after the contaminants are filtered by the mesh filter 227, the washing water falling into the mesh filter 227 is disposed on the sump housing 290 along the drain passage 241 provided below the mesh filter 227. Is captured.

In addition, the pump case 256 is formed with an impeller seating groove 257 for mounting the impeller 250 in the center. In addition, a pumping flow path 258 formed between the outer circumferential surface of the impeller seating groove 257 and the outer circumferential surface of the pump case 256 is formed. In addition, the pumping flow path 258 has a predetermined depth by the outer wall of the pump case 256. In addition, the washing water introduced into the pump case 256 is moved to the vario valve 260 along the pumping flow path 258.

Meanwhile, the sump housing 290 has a water supply connector 291 protruding from one side of the lower part, a drain pump case 296 formed in an approximately opposite side of the water supply connector 291, and a predetermined depth at an inner center thereof. A heater accommodating portion 292 is formed to be recessed.

In detail, a cylindrical sealing case 400 having a diameter of a predetermined length and protruding to a predetermined height is formed at the center of the heater accommodating portion 292, and the sealing case 400 is formed at an upper side of the sealing case 400. The motor shaft through groove 293 having a diameter smaller than the diameter of the) is formed. In more detail, a motor shaft is inserted through the motor shaft through groove 293, and the sealing member (to be described later) fitted with the motor shaft is seated on the sealing case 400.

In addition, a heater inlet 298 for inserting the heater 320 is formed at one side of the sump housing 290. In addition, the drain pump case 296 is connected to the small chamber drain groove 297, and the drain motor 300 is mounted to the drain pump case 296. In detail, a drain impeller 310 is mounted at the front of the drain motor 300 to pump the washing water to be discharged through the drain hose while rotating inside the drain pump case 296.

In addition, the sump housing 290 has a variio valve seating groove 295 formed outside the heater accommodating part 292, and the turbidity sensor seating groove is spaced apart from the variio valve seating groove 295 by a predetermined distance. 294 is formed.

Briefly describing the flow of the washing water in the sump structure according to the present invention constituting the above configuration, as the washing motor 330 is rotated first, the washing water stored in the sump bottom is an impeller (mounted in the pump case 256) ( To 250). In addition, the washing water pumped by the rotation of the impeller 250 is primarily purified while passing through the mesh filter 270. Then, the pump case 256 and the small chamber 230 are guided to the upper nozzle (not shown) and the lower nozzle (not shown), respectively, along the pumping flow path 258. Here, the washing water is branched by the vario valve 260, and is guided to the upper nozzle and the lower nozzle along the lower nozzle guide passage 236 and the water guide guide passage 237.

In more detail, the vario valve 260 allows the washing water to only open either the upper nozzle 150 or the lower nozzle 160 for a predetermined time. Then, after a certain time, only the other nozzles are alternately opened, so that the washing water is evenly sprayed on the upper nozzle and the lower nozzle.

Meanwhile, some of the washing water guided along the flow path passes through a turbidity sensor (not shown), and is collected at the bottom of the sump along a drain flow path 241 formed at the outside of the soil chamber 230. In addition, the washing water is moved to the drain pump case 296 in the draining process, and when the drain motor 300 is operated, the drain impeller 310 is rotated and drained.

Figure 3 is a perspective view of a washing motor with a leakage preventing device according to the spirit of the present invention, Figure 4 is a cross-sectional view showing a state in which the washing motor equipped with the leakage preventing device is coupled to the sump housing.

Referring to FIGS. 3 and 4, the washing motor 330 equipped with the leakage preventing device according to the present invention includes a motor housing 332 protecting a stator and a rotor therein, and a central portion of the motor housing 332. The bearing part 334 which rises to a predetermined height, is accommodated in the bearing part 334 which accommodates a motor bearing inside, the motor shaft 331 extended to the upper surface of the said bearing part, and is inserted in the said motor shaft 331, The said bearing Sealing member 500 that is seated on the upper side of the portion 334 is included. In detail, the sealing member 500 is in close contact with the inside of the sealing case 400 so that the washing water does not leak along the contact surface of the sealing case 400 and the sealing member 500. Preferably, the sealing member 500 may be a rubber material having a predetermined elasticity.

On the other hand, the sealing member 500 is first inserted into the motor shaft 331, and then inserted into the sealing case 400 formed on the bottom surface of the sump housing 290. The sealing member 500 is inserted into the inner bottom of the sump housing 290 first, and then the probability of damage to the surface of the sealing member is significantly reduced when assembling the motor, compared to the method in which the motor shaft is penetrated. There is an advantage.

As shown in FIG. 4, unlike the case in which the sealing member 500 is mounted inside the sump housing 290, the sealing member 500 is mounted on the outer lower side of the sump housing 290 so that the replacement of the sealing member 500 can be performed very much. Simple. In other words, when the degree of wear of the sealing member 500 is severe, the cleaning motor 330 is separated from the sump housing 290. Then, the sealing member 500 is removed from the motor shaft 331, and then replaced with a new sealing member 500 to be inserted.

By the leak prevention structure of the dish washing machine according to the present invention having the configuration as described above, there is an effect that the leakage phenomenon flowing out of the washing water flows on the outer peripheral surface of the motor shaft.

In addition, by inserting the seal member to prevent the wash water leakage to the motor shaft and then mounting the motor to the sump, there is an effect that the phenomenon that the seal member is damaged during assembly is eliminated.

1 is a cross-sectional view schematically showing a dish washer provided with a leak-proof structure according to the spirit of the present invention.

Figure 2 is an exploded perspective view of the dishwasher sump provided with a leak-proof structure according to the spirit of the present invention.

Figure 3 is a perspective view of a washing motor with a leak prevention device according to the spirit of the present invention.

Figure 4 is a cross-sectional view showing a state in which the washing motor equipped with the leakage preventing device is coupled to the sump housing.

<Description of the symbols for the main parts of the drawings>

100: dishwasher 110: tub 111: door

120: upper rack 130: lower rack 140: water guide

150: upper nozzle 160: lower nozzle 200: sump

210: lower nozzle arm holder 220: filter 230: soil chamber

240 pump seating part 250 impeller 260 Vario valve

270: mesh filter 280: disposer 290: sump housing

300: drainage motor 310: drainage impeller 320: heater

330: cleaning motor 400: sealing case 500: sealing member

Claims (5)

Washing motor; A sealing member inserted into the rotating shaft of the washing motor; And a sump housing having a space for storing the washing water, and a sump housing having a sealing case for inserting the sealing member in a bottom of the bottom thereof. The method of claim 1, The sealing member is leakproof structure of the dishwasher, characterized in that mounted to the outside of the sump housing. The method of claim 1, The sealing case is formed with a predetermined height and diameter on the bottom surface of the central portion of the sump housing, The leakage preventing structure of the dishwasher, characterized in that the upper surface is formed with a predetermined diameter to include a through groove for penetrating the rotating shaft of the motor. The method of claim 1, The sealing member is a leakage preventing structure of the dishwasher, characterized in that the rubber material having a predetermined elasticity. The method of claim 1, Before the motor is mounted on the bottom surface of the sump housing, the sealing member is inserted into the rotating shaft of the motor, characterized in that the leakage preventing structure of the dishwasher.