KR0128905Y1 - Dishwasher - Google Patents

Abstract

The present invention relates to a dishwasher, and its purpose is to drive a washing impeller pumping the washing water and a draining impeller draining water by using a single driving motor capable of forward and reverse rotation, thereby simplifying the overall structure and improving productivity and manufacturing cost accordingly. It is to reduce the vibration by tightening the drive motor using the dustproof member.

The dishwasher according to the present invention operates by using a single driving motor 400 capable of reverse rotation of the washing impeller 310 and the draining impeller 320, and the washing motor 400 is driven in the forward direction during the washing and rinsing stroke. The dish is rotated to wash the dishes through the washing impeller 310, and the food waste contained in the washing water is filtered through the draining impeller 320. In addition, during the drainage stroke, the driving motor 400 reversely rotates by the microcomputer, thereby rotating the washing impeller 310 and the draining impeller 320 in a reverse direction, so that the washing water is sucked by the suction impeller output of the draining impeller 320 to the outside of the main body 100. To be discharged.

In addition, the drive motor 400 is fastened to the outer bottom surface of the sump case 300 by using a bolt 450, and the anti-vibration rubber 430 is installed on the fixing bracket 420 of the drive motor 400 to prevent it. Vibration is attenuated by elasticity.

Therefore, by simultaneously driving the washing impeller 310 and the drainage impeller 320 by using a single drive motor 400 capable of forward and reverse rotation, the structure of the dishwasher is simplified and its productivity is improved to reduce the manufacturing cost, and There is an advantage that noise due to vibration attenuation is reduced.

Description

dish washer

The present invention relates to a dishwasher, and more particularly to a drive motor for driving the cleaning impeller and drainage impeller and its dustproof structure.

In general, the dishwasher is a device for washing dishes, washing and rinsing and draining and drying in advance to program the microcomputer of the control unit so that the user can selectively control the washing operation. .

1 and 2, the dish washing machine having such a function is composed of a washing tank 2, a washing impeller 3, and a drain impeller 4 built in the main body 1. As shown in FIG.

Inside the washing tank (2) and the upper spray nozzle (7) for washing the dishes by spraying the washing water to the upper basket (5) and the lower basket (6), the upper and lower baskets (5, 6) to hold the dishes and The lower part yarn nozzle 8 is rotatably provided, and a water supply valve 11 is installed at one end of the water supply hose 12 outside the cleaning tank 2 to control the supply of the washing water.

The water supply hose 12 extends from the water supply valve 11 and is installed to penetrate the middle portion of the washing tank 2 to supply washing water to the washing tank 2.

In addition, the drain impeller 4 is installed under the washing tank 2, and the drain hose 13 is connected to the discharge port, and is driven during the dish washing or when the washing is completed to discharge the washing water to the outside of the main body 1.

In addition, the washing impeller (3) is also installed at the bottom of the washing tank (2), and is configured in a sump case (sump case) 19 for fresh water. At this time, the discharge port of the washing impeller (3) is connected to the connecting pipe (9) of the lower part nozzle (8) and at the same time is connected to the washing water pipe (10) for supplying the washing water to the upper injection nozzle (7), 10 extends from the discharge port of the washing impeller 3 to the upper end of the washing tank 2 and is again penetrated into the washing tank 2.

Reference numerals 15 and 16 are upper and lower basket rails for supporting the upper basket 5 and the lower basket 6 forward and backward, and 17 and 18 are provided at the lower ends of the upper and lower baskets 5 and 6, respectively. It is a roller that enables rolling motion. 14 is a water column to rotate the upper injection nozzle (7) when the washing water flows, 20 is an automatic detergent dispenser.

Referring to the operation of the dishwasher configured as described above are as follows.

First, when power is applied to the water supply valve 11 under the control of the microcomputer (not shown) while the water tap is not shown, the solenoid (not shown) in the water supply valve 11 operates to supply the water supply valve. By opening 11, the washing water is introduced into the washing tank 2, and when the water level in the washing tank 2 reaches an appropriate level, the water supply valve 11 is blocked and water supply is stopped.

Then, the washing impeller 3 is operated, so that the washing water is supplied to the upper and lower portions of the washing tank 2 by the pumping force of the washing impeller 3.

That is, some of the washing water supplied to the upper portion of the washing tank 2 through the washing water pipe 10 is sprayed to the upper portion of the upper basket 5, and the other is in the water column 14 assembled to the upper basket 5. It is supplied and sprayed up and down while rotating the upper injection nozzle (7). In addition, the washing water supplied to the lower portion of the washing tank 2 through the connecting pipe 9 is sprayed to the lower basket 6 while rotating the lower part nozzle (8).

On the other hand, the washing water sprayed from the upper injection nozzle (7) and the lower partial nozzle (8) after washing the dishes contained in the upper, lower basket (5), is collected in the sump case (19) and again washing impeller (3) It is recirculated by the pumping force of.

At this time, the detergent is automatically input from the detergent inlet (not shown) under the control of the microcomputer, and the rinse is automatically automatically under the microcomputer control even before the rinsing stroke is finished. Subsequently, when the washing and rinsing stroke is completed, the drain impeller 4 is operated so that the washing water is discharged to the outside of the main body 1 through the drain hose 12, and the drying process is performed to wash the dishes. The over rinsing, draining and drying strokes are all controlled by the microcomputer.

However, such a conventional dishwasher has a washing impeller 3 for pumping the washing water into the washing tank 2 and a drain impeller 4 for discharging to the outside, respectively, so that a driving unit for driving the dishwasher is separately installed. It is.

That is, as shown in FIG. 2, the washing motor 3a for driving the washing impeller 3 and the draining motor 4a for driving the drain impeller 4 are separately located at the rear and the left side of the sump case 19. The washing impeller 3 and the drainage impeller 4 are separately rotated by different driving units.

Therefore, since each drive motor (3a, 4a) must be installed, the amount of installation space is required, the overall size of the dishwasher becomes large, and the structure for fixing the installation of each drive motor (3a, 4a) is required As a result, the structure becomes complicated, resulting in lower productivity and higher manufacturing costs.

The present invention is to solve this problem, the main purpose of the present invention is to drive the washing impeller for pumping the washing water and the drain impeller to drain using a single drive motor capable of forward and reverse rotation, simplifying the overall structure and accordingly An object of the present invention is to provide a dishwasher that improves productivity and reduces manufacturing costs, and a secondary object thereof is to provide a dishwasher that attenuates vibrations generated during its operation by fastening a driving motor using a dustproof member.

1 is a side cross-sectional view schematically showing an internal configuration of a general dish washer.

Figure 2 is a perspective view showing the bottom of the conventional dishwasher, showing a flow path of the washing water.

3 is a cross-sectional view schematically showing a dish washing machine according to the present invention.

Figure 4 is an enlarged cross-sectional view of the sump case portion of the dishwasher according to the present invention shown in FIG.

5 is an enlarged view of a portion A of FIG. 4 and illustrates a fastening structure of the driving motor.

* Explanation of symbols for main parts of the drawings

100: main body 200: washing tank

300: sump case 310: cleaning impeller

320: drain impeller 330: connector

340: filter path 341: filter member

342: filter 350: drainage passage

360: washing water pipe 370: drain hose

380: fastener 381: fastener

400: drive motor 410: rotation axis

420: fixing bracket 430: dustproof rubber

440 washer 450 bolt

The present invention for achieving this purpose, the main body is built in the washing tank, the sump case is provided in the lower portion of the washing tank, the sump is fastened to the outside of the lower case of the sump case and has a rotating shaft that can be forward and reverse rotation of the sump case It includes a drive motor, a washing impeller coupled to the upper portion of the rotary shaft to pump the washing water to the washing tank in the forward rotation to wash the dishes, a drain impeller coupled to the lower portion of the rotary shaft to drain the washing water to the outside of the main body when the reverse rotation;

It is provided on the lower outer side of the sump case and is provided with a fastening hole having a fastening hole formed therein, a fixed bracket having a fastening hole corresponding to the fastening hole, and a locking groove formed at the outer circumference thereof to be fitted into the fastening hole, and one side thereof Anti-vibration rubber, which has a through hole corresponding to the fastening hole in the inside of the fastening table, washer provided on the other side of the anti-vibration rubber, washer and through-hole are coupled to the fastening hole to fasten the driving motor to the lower outside of the sump case. It is characterized by including.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a cross-sectional view schematically showing a dish washing machine according to the present invention, Figure 4 is an enlarged view of the sump case shown in FIG. (In the dishwasher according to the present invention, the same components as in the prior art will be briefly described using the same names.)

The dishwasher according to the present invention, as shown in this, is provided in the main body 100, the washing tank 200 is installed in the basket (111, 112) to be washed, the sump case is installed in the lower portion of the washing tank 200 to clean the wash water 300, the sump is configured at the bottom of the sump 300, and pumping the washing water during the washing rinsing stroke, and largely composed of a sending means for draining the washing water to the outside during the draining stroke.

The washing tank 200 is provided with an upper basket 111 and a lower basket 112 for storing dishes in the upper and lower portions thereof, and are rotatably installed adjacent to the upper basket 111 and the lower basket 112 to wash water in the dish. The upper injection nozzle 113 and the lower part injection nozzle 114 for spraying are configured.

The sump case 300 provided in the lower portion of the washing tank 200 stores the washing water supplied into the washing tank 200 through a water hose not shown. In the center of the sump case 300, a washing impeller 310 is provided as a feeding means. And a drain impeller 320 is installed. The washing impeller 310 is relatively larger than the draining impeller 320, and the lower part of the washing impeller 310 is opened so that the washing water is introduced and the discharge port is installed inside the cochlear washing impeller housing 311 associated with the connecting pipe 330. . In addition, the drain impeller 320 is provided in the drain impeller housing 321 in which the upper part is opened and the washing water is introduced, and the discharge port is formed at both sides.

At this time, the connecting pipe 330 is in communication with the lower portion of the nozzle 114 to guide the washing water, one of the discharge port formed on both sides of the drain impeller housing 321 is in communication with the flow passage 340 to be described later In addition, the other discharge port is in communication with one end of the drain passage 350 for guiding the drainage of the washing water to the outside of the main body 100. Reference numeral 360 is a washing water pipe branched from the connecting pipe 330 and the end is in communication with the top of the washing tank 200 to guide the washing water to the water column 115 for rotating the upper injection nozzle (113).

In addition, the driving motor 400 is fastened by a fastening means to the lower outer side of the sump case 300 as a driving means for driving the washing impeller 310 and the drain impeller 320.

The driving motor 400 has a rotary shaft 410 of which is projected and inserted into the sump case 300, and a washing impeller 310 is coupled to the rotary shaft 410 at an upper side thereof, and a drain impeller 320 is spaced at a predetermined distance from the lower side thereof. ) Is coupled, the washing and rinsing stroke driving motor 400 is rotated forward, the washing impeller 310 and the drainage impeller 320 is also rotated in the forward direction at the same time, the driving motor 400 during the drain stroke Is reversely rotated washing impeller 310 and the drain impeller 320 is configured to rotate in the reverse direction at the same time. This operation is preprogrammed into the microcomputer (not shown).

On the other hand, the other end of the flow passage 340, one end of which is connected to one discharge port of the drainage impeller housing 320, the filter member 341 is formed in the upper part of the funnel shape, the upper portion formed by expanding the filtering member 341 There is a porous filter 342 is installed to collect food waste contained in the washing water, which will be described in detail in the operation description.

In addition, the fastening means for fastening the drive motor 400 to the lower outer side of the sump case 300 is a characteristic element of the present invention is configured as follows to attenuate the vibration generated during its operation.

That is, as shown in Figure 5, the fastening table 380 is formed with a fastening hole 381 is formed in the lower outer side of the sump case 300 and the stepped portion 382 is reduced in diameter is provided In addition, the driving motor 400 has a fixing bracket 420 for fixing it.

The fixing bracket 420 has a fixing hole 421 formed at a position corresponding to the fastening hole 381, and the fixing hole 421 has an anti-vibration rubber 430 having a through hole 431 formed therein in the axial direction. ) Is forced.

The anti-vibration rubber 430 has a ring-shaped locking groove 432 is formed in the outer peripheral position is forcibly fitted in the fixing hole 421 of the fixing bracket 420, the fastening table 380 into the through hole 431 One end of the stepped portion 382 is inserted.

And the washer 440 is provided on the outer surface of the anti-vibration rubber 430, one end of the fastening hole of the fastening table 380 by simultaneously passing through the washer 440 and the through hole 431 of the anti-vibration rubber 430 A bolt 450 coupled to 381 is configured.

Therefore, the driving motor 400 is fastened to the outer lower part of the sump case 300 by the bolt 450, and the vibration generated during the operation of the driving motor 400 by the anti-vibration rubber 430 is attenuated. At this time, as the bolt 450 is tightened, the washer 440 is pushed and the anti-vibration rubber 430 is reduced so that the locking groove 432 that is pushed into the fixing hole 421 of the fixing bracket 420 is also worn. Reduced is the coupling force of the anti-vibration rubber 430 and the fixing bracket 420 is increased.

Next will be described the operation of the dishwasher according to the present invention configured as described above, first the operation during the washing and rinsing stroke.

First, as the water supply valve (not shown) under the control of the microcomputer (not shown) is opened while the water tap (not shown) is opened, the washing water is introduced into the washing tank 200 through the water supply hose (not shown). When the appropriate amount of washing water flows into the sump case 300, the water supply valve is blocked and the water supply is stopped and the driving motor 400 coupled to the lower outer side of the sump case 300 operates.

At this time, the drive motor 400 by rotating the rotating shaft 410 in the forward direction by the microcomputer, the washing impeller 310 and the drain impeller 320 is axially coupled to the washing water by the pumping force of the washing tank ( 200 is sprayed on the upper and lower parts.

That is, a part of the washing water fresh in the sump case 300 is the inside of the washing impeller housing 311 and the draining impeller housing 321 through each opening by suction transmission power of the washing impeller 310 and the draining impeller 320. Some of the washing water introduced into the washing impeller housing 311 is supplied to the lower part nozzle (114) through its discharge port and the connecting pipe 330 and sprayed on the lower basket 112 while rotating it And, the remaining part is also supplied to the upper spray nozzle 113 through the washing water pipe 360 and the water tank 115 of the washing tank 200 branched from the connecting pipe 330 and rotates the upper basket as well It rubs with the utensils contained in 111 and is returned to the sump case 300 again.

At this time, since the washing impeller 310 has a blade larger than the drain impeller 320, most of the washing water introduced is discharged into the washing impeller housing 311 and sprayed into the washing tank 200 to wash the dishes. Done.

Meanwhile, a small amount of washing water introduced into the drain impeller housing 321 together with the food waste is guided to the filter flow channel 340 associated with one discharge port by the power output of the drain impeller 320 and the end of the filter flow channel 340. The funnel-shaped filtering member 341 and the filter 342 formed in the guide to the sump case 300 again. The food waste contained in the washing water is filtered by the filtering member 341 and the filtering filter 342 and remains in the filtering member 341.

Therefore, the food waste is collected in the filtering member 341 by repetition of this action, and the washing water separated from the residue is returned to the sump case 300 and sprayed into the washing tank 200 by the output power of each impeller 310 and 320. The dishes are washed, and the washing water is forcibly sprayed into the washing tank 200 by one driving motor 400 to wash the dishes, and to filter food waste contained in the washing water.

At this time, the detergent is automatically input at the detergent inlet (not shown) under the control of the microcomputer during the washing stroke, and the rinse is automatically added from the rinse inlet (not shown) under the control of the microcomputer even before the end of the rinsing stroke. It works. And a considerable vibration is generated by the operation as described above, a vibration-proof rubber 430 is installed between the fixing bracket 420 of the drive motor 400 and the fastening table 380 of the sump case 300 to transmit such vibration. It is prevented that the noise is reduced accordingly.

The following describes the drainage stroke after the wash and rinse strokes are completed.

When the dishwasher finishes the washing and rinsing stroke, the driving motor 400 rotates in the reverse direction under the control of the microcomputer after a predetermined rest time.

Therefore, the washing impeller 310 and the drainage impeller 320 which are coupled to the rotary shaft 410 rotate simultaneously in the reverse direction, and the washing water freshened to the bottom of the washing tank 200 and the sump case 300 by the suction transmission power thereof. It is discharged to the outside through the drain passage 350 and the drain hose 370.

That is, the washing impeller 310 and the drain impeller 320 rotate in the reverse direction, and the washing water in the sump case 300 provided in the lower part of the washing tank by the suction transmission power thereof passes through the opening to the inside of the drain impeller housing 321. Is introduced, it is discharged to the outside of the main body 100 through the discharge port on the other side of the drain impeller housing 321 and the drain passage 350, the drain hose 370 communicated with it.

At this time, since the food waste collected in the filtering member 341 and the filtering filter 342 is discharged in the opposite direction, the food waste is introduced into the drainage impeller housing 321 through the filtering passage 340 together with the washing water and the drain passage. It is discharged to the outside of the main body 100 through the 350 and the drain hose 370. And the vibration by the operation of the drive motor 400 by the anti-vibration rubber 430 is attenuated, thereby reducing the noise.

In addition, when the drainage stroke is completed, the drying stroke is performed. The heater (not shown) is heated, and the dishes are dried. At the same time, the humid air flows out into a hole (not shown) at the side of the washing tank 200, thereby completing the washing of the dishes. do.

As a result, by washing and draining the dishes using one driving motor 400, the structure of the dish washing machine is simplified and its assembly is facilitated, and the fastening table 380 and the driving motor of the sump case 300 Between the fixing brackets 420 of 400, the anti-vibration rubber 430 to reduce the vibration is installed, thereby reducing the noise.

As described in detail above, the dishwasher according to the present invention operates by using a single driving motor capable of forward and reverse rotation of the washing impeller and the draining impeller, and during the washing and rinsing stroke, the driving motor is rotated forward to remove the washing impeller. The dishes are washed and the food waste contained in the washing water is filtered through the drain impeller. In addition, during the drainage stroke, the driving motor reversely rotates by the microcomputer, so that the washing impeller and the draining impeller are rotated in the reverse direction.

Then, the drive motor is fastened to the outer bottom surface of the sump case by using a bolt, and the vibration is attenuated by its elasticity by forcibly installing the anti-vibration rubber on the fixing bracket of the drive motor.

Therefore, by simultaneously driving the washing impeller and the drain impeller using a single drive motor capable of forward and reverse rotation, the structure of the dishwasher is simplified and its productivity is improved, thereby reducing the manufacturing cost and reducing the noise due to vibration attenuation. have.

Claims (2)

The main body 100 in which the washing tank 200 is built, the sump case 300 provided in the lower portion of the washing tank 200, and is fastened to the lower outer side of the sump case 300, and is fastened to the lower outer side of the sump case 300. A driving motor 400 having a rotating shaft 410 that protrudes inwardly and forwardly, is coupled to an upper portion of the rotating shaft 410 to wash the dishes by pumping and spraying the washing water into the washing tank 200 during forward rotation. 310, a drain impeller 320 coupled to a lower portion of the rotating shaft 410 to drain the washing water to the outside of the main body 100 during reverse rotation, A fastening table 380 provided at a lower outer side of the sump case 300 and having a fastening hole 381 formed therein, and provided at the driving motor 400 and fixing holes 421 corresponding to the fastening hole 381. ) Is formed in the fixing bracket 420, the engaging groove 432 is formed on the outer periphery is forcibly fitted in the fixing hole 421, one side thereof is in contact with the fastening table 380 and the fastening hole 381 therein Vibration-resistant rubber 430, the through-hole 431 is formed corresponding to the washer 440, the washer 440 provided on the other side of the anti-vibration rubber 430, the washer 440 and the through hole 431 through the fastening hole And a bolt (450) coupled to the (381) to fasten the drive motor (400) to the lower outer side of the sump case (300). The dishwasher of claim 1, wherein the fastening table (380) includes a step portion (382) inserted into the through hole (431) of the dustproof rubber (430).