KR20180015934A - Dish Washer Having Noise Reduction Chamber - Google Patents

Abstract

According to an embodiment of the present invention, a dishwasher comprises: an air jet generator absorbing air from an air suction unit to generate an air bubble in washing water; and a noise reduction chamber reducing noise generated in the air jet generator.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dish washer including a noise reduction chamber,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air jet generator for generating air bubbles, and more particularly to an air jet generator disposed inside a dishwasher to generate air bubbles in washing water.

Generally, a dishwasher is a household appliance that cleans food waste buried on a surface of a dish by high-pressure washing water sprayed from an injection nozzle.

The conventional dishwasher is composed of a tub having a washing tub formed therein and a sump mounted on a bottom surface of the tub to store wash water.

By the pumping action of the washing pump installed in the sump, the washing water is moved to the injection nozzle, and the washing water moved to the injection nozzle is injected at a high pressure through the injection port formed at the end of the injection nozzle. Then, the washing water sprayed at the high pressure impinges on the surface of the utensil, so that dirt such as garbage or the like on the utensil falls to the bottom of the tub.

A filter is disposed between the sump and the tub, and the filter filters the foreign substances contained in the washing water.

A dishwasher is a method for removing contamination of a tableware. The dishwasher utilizes the mechanical force to spray the washing water through the nozzle of the washing machine arm and the detergency of the detergent using the detergent and the chemical reaction of the contamination.

Open No. 10-2013-0071355 discloses a method of increasing the cleaning power by generating a minute bubble of gas in an electrolysis process by disposing a separate electrolysis unit. However, this disadvantageously requires a separate electrolyzer, There has been a problem that operation of the decomposing device is required.

An object of the present invention is to provide an air jet generator for generating fine bubbles by breathing and grinding a gas while passing through a controllator composed of an impeller, a depressurizing portion, a pressurizing portion, and an air tap, To provide a dishwasher.

SUMMARY OF THE INVENTION The present invention provides a dishwasher including an air jet generator in which fine bubbles are continuously generated when a pump of a dishwasher is driven by branching a flow portion of a pump generating a jetting force of a nozzle .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dish washer which reduces noise caused by air sucked from an air suction part of an air jet generator.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a dishwasher including an air jet generator for sucking air into an air suction unit to generate air bubbles in washing water, the dish washer comprising: And a noise reduction chamber for reducing noise caused by the noise.

According to another aspect of the present invention, there is provided a dishwasher including a tub for receiving a dishware; A spray module for spraying wash water toward the tableware in the tub; A sump for supplying wash water to the injection module; A pump for feeding the wash water stored in the sump to the injection module; An air jet generator for receiving a part of the washing water fed from the pump to form an air bubble in the washing water and discharging the air bubble to the sump; And a noise reduction chamber for reducing noise generated in the air jet generator, wherein the air jet generator comprises: an impeller for applying centrifugal force to the flowing wash water; A decompression unit that reduces the pressure of the washing water that has passed through the impeller; An air suction unit for injecting air into the decompression unit; A pressurizing portion for increasing pressure to crush the air introduced from the air suction portion; And an air tap having a plurality of holes formed therein for crushing air contained in the washing water passed through the pressing portion.

The details of other embodiments are included in the detailed description and drawings.

According to the air jet generator of the dishwasher of the present invention, one or more of the following effects can be obtained.

First, the air jet generator of the dishwasher according to the present embodiment divides a part of the washing water supplied from the pump and generates air bubbles in the washing water through the branched flow. Therefore, when the pump of the dishwasher is driven for washing dishes, This has the advantage that it occurs continuously.

Second, air bubbles can be generated at low pressure by using a pump disposed in the conventional dishwasher without using a separate pump.

Third, some of the flow branched from the pump rotates along the impeller vane, air is sucked and crushed along the air grinding tube, and the amount of air bubbles generated through the air tap is maximized.

Fourth, there is also an advantage of reducing noise generated when air is sucked into the air suction portion of the air jet generator.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a schematic front cross-sectional view of a dishwasher according to an embodiment of the present invention.
2 is a block diagram showing the flow of washing water in a dishwasher including an air jet generator according to an embodiment of the present invention.
3 is an exploded perspective view of an air jet generator including a noise reduction chamber according to an embodiment of the present invention.
4 is a side cross-sectional view of an air jet generator including a noise reduction chamber according to an embodiment of the present invention.
FIG. 5 (a) is a view showing a traveling direction of air in a noise reduction chamber according to an embodiment of the present invention.
FIG. 5 (b) is a view showing a traveling direction of noise of the noise reduction chamber according to an embodiment of the present invention.
6 is a view showing an arrangement of an air jet generator including a noise reduction chamber according to an embodiment of the present invention and a connection relationship between the noise reduction chamber and the tub.
7 is a view for explaining an arrangement of an air jet generator including a noise reduction chamber according to an embodiment of the present invention.
8 is a view for explaining a side arrangement of an air jet generator including a noise reduction chamber according to an embodiment of the present invention.
9 is a perspective view of an air jet generator including a noise reduction chamber according to another embodiment of the present invention.
10 is a cross-sectional view taken along the line A-A 'in FIG.
FIG. 11 (a) is a view showing a direction of air flow in a noise reduction chamber according to another embodiment of the present invention. FIG.
11 (b) is a view showing a traveling direction of noise of the noise reduction chamber according to another embodiment of the present invention.
12 is a block diagram of a dishwasher including an air jet generator and a high-pressure pump according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, an air jet generator of a dishwasher according to embodiments of the present invention will be described with reference to the drawings.

1 is a schematic front cross-sectional view of a dishwasher according to an embodiment of the present invention.

1, the dishwasher 10 according to the present embodiment includes a cabinet assembly 12 for forming an outer shape, a rack 22 disposed inside the cabinet assembly 12 and on which a tableware is mounted, A sump 20 disposed within the cabinet assembly 12 for supplying wash water to the spray module 24 and a sump 20 disposed inside the cabinet assembly 12 for spraying wash water toward the dishware, A water supply module 38 connected to the sump 20 for discharging the washing water to the outside and a drain module 32 installed on the sump 20 for filtering the washing water, And a filter assembly (30). The dishwasher 10 may further include a heater module 42 installed in the sump 20 for heating the washing water.

The cabinet assembly 12 forms an outer shape of the dishwasher and includes a cabinet 14 and a door 16 coupled to the cabinet 14 for opening and closing the cabinet 14 and a cabinet 14, Or a tub 18 to which steam is applied.

The rack 22 is installed inside the tub 18, and the tableware is mounted on the rack 22.

The jetting module 24 is for jetting washing water toward the tableware. The jetting module 24 includes a jetting nozzle 26 and a nozzle flow path 28 for supplying washing water to the jetting nozzle 26.

A plurality of nozzle nozzles 26 may be disposed and a plurality of nozzle nozzles 26 corresponding to the nozzle nozzles 26 may be disposed and may include a nozzle flow path switching portion 44 are disposed.

In the present embodiment, the injection module 24 is configured to supply and receive the washing water from the sump 20 in which the washing water is stored. However, unlike the present embodiment, water may be directly supplied through the water supply module 38 Do.

The water supply module 38 is configured to receive water from the outside and supply the water to the sump 20. In the present embodiment, water is supplied to the sump 20 through the filter assembly 30. [

The drainage module 32 is for discharging the wash water stored in the sump 20 to the outside, and is composed of a drainage channel 34 and a drainage pump 36.

The filter assembly 30 is for removing foreign matter such as food waste contained in the washing water and is disposed on the flow path of the washing water flowing from the tub 18 into the sump 20. [

To this end, the sump 20 may be provided with a filter mounting portion where the filter assembly 30 is installed, and a filter flow path connecting the filter mounting portion and the inside of the sump 20 may be disposed.

The sump 20 is formed with a sump storing part for storing the washing water therein and further includes a pump 40 for feeding the stored washing water to the injection module 24. [

The pump 40 pumps the wash water stored in the sump 20 to the injection module 24. The pump 40 is connected to the injection module 24 through a pump flow path.

The pump 40 according to the present embodiment supplies the washing water to the air jet generator 100 in addition to the jetting module 24 through the branch pipe 230. The air jet generator 100 is supplied with the washing water through the branched flow path from the pump and sucks and crushes the supplied washing water through the air suction unit 140 (see FIGS. 3 and 4) . The air jet generator 100 is connected to the tub 18 or the sump 20. Thus, when the pump is operated, the wash water generated by the air jet generator 100, into which the air bubbles have been generated, is supplied into the sump 20, and the wash water that is sent to the injection module 24 includes air bubbles.

The sump 20 is connected to a steam flow path and a steam nozzle for spraying the steam generated by the heater module 42 into the tub 18, and a valve (not shown) for interrupting steam can be installed in the steam flow path , The steam injected into the tub 18 through the valve is interrupted, and the amount of steam may be adjusted in some cases.

Here, the steam generated in the sump 20 may be supplied into the tub 18 through the filter passage and the filter mount, not the steam nozzle. The sump 20 can be connected to the tub 18 in both directions through the steam flow path and the filter flow path.

FIG. 2 is a block diagram illustrating a flow of washing water in a dishwasher including an air jet generator according to an embodiment of the present invention. FIG. 3 is a block diagram of an air jet generator including a noise reduction chamber according to an embodiment of the present invention. FIG. 4 is a side cross-sectional view of an air jet generator including a noise reduction chamber according to an embodiment of the present invention. FIG. FIG. 5 is a view showing a traveling direction of air and noise in a noise reduction chamber according to an embodiment of the present invention, FIG. 6 is a view showing the arrangement of an air jet generator including a noise reduction chamber according to an embodiment of the present invention, Fig. 5 is a diagram showing the connection relationship between the noise reduction chamber and the turbine. FIG. 7 is a view for explaining an arrangement of an air jet generator including a noise reduction chamber according to an embodiment of the present invention, and FIG. 8 is a view for explaining an arrangement of an air jet generator including a noise reduction chamber according to an embodiment of the present invention. Fig.

Referring to Figure 2, the flow of wash water flowing through the air jet generator will be described. The washing water stored in the sump 20 of the dishwasher 10 is supplied to the injection module 24 through the pump 40 and then flows back to the sump 20 through the tub 18. [ In the dishwasher 10 according to the present embodiment, part of the washing water that has passed through the pump 40 also flows into the air jet generator 100 that generates air bubbles in the washing water.

The air jet generator 100 is supplied with a part of the washing water discharged from the pump 40. The air jet generator 100 includes an impeller 170, an air grinding tube 110 including a depressurizing portion 120 formed with an air suction portion 140 and a pressing portion 130, and an air tap 180 To generate air bubbles in the wash water. The wash water including the air bubbles flows into the sump 20 again. In this case, the washing water containing the air bubbles can be introduced into the sump 20 through the tub 18. [ Therefore, when the pump 40 is operated by the operation of the dishwasher 10, air bubbles are generated in the washing water.

3 to 8, a dishwasher 10 including an air jet generator 100 and noise reduction chambers 300 and 400 according to an embodiment of the present invention will be described.

The dishwasher (10) according to an embodiment of the present invention includes an air jet generator that sucks air into an air suction unit to generate air bubbles in washing water. The dishwasher (10) includes a noise reduction Chambers 300 and 400, respectively.

The air jet generator 100 according to the present embodiment includes an impeller 170 for applying centrifugal force to the washing water that flows, a decompression unit 120 for reducing the pressure of the washing water that has passed through the impeller, (140), a pressurizing part (130) for increasing the pressure to crush air introduced from the air suction part, and an air tap (180) having a plurality of holes for crushing air contained in the washing water passed through the pressing part And the noise reduction chambers 300 and 400 reduce the noise generated in the air intake unit 140.

The depressurization portion 120 is formed such that the cross-sectional area of the passage is reduced in the traveling direction of the washing water, and the rate of increase in the cross-section of the passage portion per passage length is larger than that of the passage portion, The air suction part 140 is disposed at a portion where the flow path area of the decompression part 120 is reduced.

The pressure reducing unit 120 and the pressing unit 130 form one air grinding tube 110.

The air jet generator 100 is connected to an inlet pipe 210 through which a part of the washing water having passed through the pump 40 flows in the air pulverizing pipe 110 and the washing water passing through the air pulverizing pipe 110 is discharged And is connected to the discharge pipe 220.

The inflow pipe 210 is connected to the air crushing pipe 110 and sends part of the washing water discharged from the pump 40 to the air crushing pipe 110. The discharge pipe 220 connects the air crushing pipe 110 and the sump 20 or the tub 18 to flow the washing water discharged from the air crushing pipe 110 to the sump 20 or the tub 18.

The inflow end face 112 of the air grinding tube 110 and the end face of the inflow pipe 210 are coupled to each other at a portion where they are in contact with each other by welding. The discharge end surface 114 of the air grinding tube 110 and the end surface of the discharge tube 220 are joined together in a fusion-welding manner at portions where they abut each other.

Referring to FIG. 5, the impeller 170 is mounted on the impeller mounting portion 150 of the air grinding tube 110 described below. The impeller 170 is disposed before the pressure reducing portion 120 of the air grinding tube 110 in the direction in which the washing water flows. The impeller 170 is not mounted on the impeller mounting portion 150 of the air grinding tube 110 but may be disposed inside the inflow pipe 210 or between the pressure reducing portion 120 and the inflow pipe 210 .

The impeller 170 according to the present embodiment is mounted and fixed to the impeller mounting portion 150. The impeller 170 includes an impeller peripheral portion 172 having an annular outer shape and a vane 174 disposed inside the impeller peripheral portion 172 to apply centrifugal force to the washing water. The impeller circumferential portion 172 abuts against the impeller mounting portion 150 and is fixed.

The washing water passing through the impeller 170 rotates as it passes through the vane 174 to generate a swirling flow. The vane 174 of the impeller 170 applies a centrifugal force to the washing water flowing into the decompression section 120. The vane 174 of the impeller 170 can be fixed or rotated and applies centrifugal force to the wash water passing through the impeller 170.

The air grinding tube 110 includes a depressurizing portion 120 for depressurizing the washing water and increasing the speed of the washing water, and a pressing portion for rapidly increasing the cross-sectional area of the passage. The depressurizing portion 120 includes a pressure- An air suction unit 140 for sucking air is formed

The air grinding tube 110 further includes an impeller mounting portion 150 on which the impeller 170 is mounted and an air tap mounting portion 160 on which the air tap 180 is mounted.

The air grinding tube 110 is disposed in the order of the impeller mounting portion 150, the pressure reducing portion, the pressing portion, and the air tap mounting portion 160 in the direction in which the washing water flows. The air suction portion 140 is formed at a portion where the flow path cross-sectional area of the reduced pressure portion 120 is reduced. The air suction part 140 forms an inlet opening upward in a portion where the depressurization of the decompression part 120 ends.

The impeller mounting portion 150 is connected to the end of the inflow pipe 210 and the inner circumference of the impeller mounting portion 150 is formed to correspond to the outer circumference of the impeller circumferential portion 172 such that the impeller 170 is mounted on the impeller mounting portion 150 As shown in Fig.

The depressurization portion 120 is disposed at a portion subsequent to the impeller mounting portion 150 of the air grinding tube 110 in the direction in which the washing water flows. The pressure reducing unit 120 is a part of the air grinding tube 110 through which the washing water having passed through the impeller 170 flows. The cross sectional area of the flow path is reduced in the direction of progress of the washing water, and the pressure of the washing water flowing in the pressure reducing part 120 is decreased and the speed is increased.

The pressure-reducing portion 120 gradually reduces the cross-section of the flow path in the traveling direction of the washing water.

The depressurization unit 120 forms an air intake unit 140 at a portion where depressurization ends. The air suction part 140 is formed at a portion where the flow path cross-section of the decompression part 120 is reduced.

The air suction part 140 according to an embodiment of the present invention forms an air inlet 142 opened upward in the dishwasher opposite to the ground so that water flows into the air suction part even if the pump does not operate Prevent rolling.

The air suction part 140 forms an air inlet 142 opened upward from one side of the decompression part 120. The air suction part 140 includes an air suction pipe 144 protruding from one side of the decompression part 120 to form a flow path through which air is sucked therein.

The noise reduction chamber 300 is connected to the upper portion of the air intake part 140. [ The noise reduction chamber 300 is disposed above the air suction pipe 144 of the air suction unit 140.

The noise reduction chamber 300 includes a chamber lower part 310 extending from the air suction part 140 and forming an extended flow path than the air suction part 140 and a lower flow path area of the lower chamber 310, And a chamber top 320 that is spaced apart.

The lower portion of the chamber 310 extends from the upper portion of the air suction portion 140 to greatly expand the cross-sectional area of the flow path. The chamber lower portion 310 forms an inclined surface at a portion connected to the air suction portion 140. An inclined surface is formed so that the residue in the noise reduction chamber 300 is naturally discharged to the air jet generator 100 at a portion where the cross sectional area of the flow path of the chamber lower portion 310 is greatly expanded.

The chamber top 320 is disposed above the chamber bottom 310. The chamber upper portion 320 maintains a constant interval of the extended passage area of the lower portion 310 of the chamber so that the inside of the noise reduction chamber 300 is formed with a space for spreading the noise generated from the air intake portion to the expanded space. do.

The chamber upper portion 320 is coupled to the chamber lower portion 310 from below and the upper portion of the chamber upper portion 320 is connected to the connection flow path 330.

5, when the air jet generator 100 is operated, the air suction direction and the noise transmission direction of the noise reduction chamber 300 will be described. In this case, a negative pressure is formed at the portion where the decompression of the decompression unit 120 ends, The air is introduced into the air intake part 140. 5A, air is introduced into the noise reduction chamber 300 through the chamber upper portion 320, and the air is introduced into the noise reduction chamber 300 The introduced air flows into the air suction part 140 connected to the lower part of the chamber 310.

5 (b), the noise generated when the air is introduced into the air suction unit 140 is transmitted to the noise reduction chamber 300 along the air suction pipe 144 of the air suction unit 140 The noise spreads to the expanded region along the lower chamber 310 of the noise reduction chamber 300 and is transmitted to the upper portion along the inner side of the chamber upper portion 320 where the extended channel area is maintained.

The connection passage 330 connects the air intake part 140 and the tub 18. Referring to FIG. 6, the connection passage 330 connects the upper portion 320 of the noise reduction chamber 300 and the turbohole 19 formed in the water jacket 50 disposed on the side of the tub 18.

The depressurization part 120 decreases the area of the passage toward the direction of the washing water so that the pressure of the wash water is lowered and a negative pressure lower than the atmospheric pressure is formed at the part where the suction port 142 of the air suction part 140 is formed, do. The air sucked into the air grinding tube 110 is primarily pulverized by the velocity and the swirling force of the washing water flowing inside the decompression unit 120.

The washing water containing primarily the pulverized air flows to the pressing portion 130.

The pressurizing portion 130 is disposed in the downstream portion of the decompression portion 120 of the air grinding tube 110 in the direction in which the wash water flows. The pressurization unit 130 receives the wash water that has passed through the decompression unit 120.

The pressurizing portion 130 increases the pressure to such an extent that the air introduced from the air suction portion 140 is crushed. The pressurizing unit 130 rapidly increases the cross-sectional area of the flow path in the direction in which the wash water flows so that the air contained in the wash water can be crushed. The pressing portion 130 is formed such that the ratio (H2 / L2) of the radius of the flow path cross section per flow path length is larger than the ratio (DELTA H2 / L1) of the radius of the flow path cross section per flow path length of the reduced pressure portion.

Sectional area of the discharge end of the pressurizing portion 130 is formed wider than the flow path cross-sectional area of the inflow end portion of the pressure- The pressurizing portion 130 expands more greatly than the flow path cross-section of the inflow pipe 210 so that the air pulverization through the pressure difference effectively takes place.

As the cross-sectional area of the flow path rapidly increases, the speed of the washing water decreases, and the pressure increases sharply. With a sudden increase in pressure, the air in the wash water is secondarily crushed.

In the direction in which the washing water flows, the pressing section 130 increases in a side end surface of the flow path as a curved line of a quadratic function, and thereafter, it is bent in a stepped shape and a side end surface of the flow path is widened. Since the cross section of the flow passage is gradually expanded in the narrow section of the pressurizing section 130, air pulverization in the wash water through the pressure difference effectively proceeds.

The air tap mounting portion 160 is disposed at a portion subsequent to the pressing portion 130 of the air grinding tube 110 in the direction in which the washing water flows. The air tap mounting portion 160 maintains a constant flow path extending from the pressing portion 130, and an air tap 180 is mounted inside the air tap mounting portion 160.

The air tap (180) is mounted on the air tap mounting portion (160) of the air grinding tube (110). The air tap 180 is fixed to the air tap mounting portion 160. The air tap 180 is disposed at a position spaced apart from the pressing portion 130 by a certain distance.

The air tap 180 has a circular plate shape and a plurality of holes 182 penetrating the air tap 180 are formed. The washing water having passed through the pressing portion 130 passes through the air tap. The air in the washing water is thirdly pulverized while passing through a plurality of holes 182 formed in the air tap 180.

The holes 182 formed in the air tabs 180 are arranged closely to the disk-shaped air tabs 180 at regular intervals. The air tap 180 may be a through-hole or an air tap 180 having elongated holes formed to the left and right.

In addition, it may be a cross elongated shape in which an elliptical shape elongated in the downward direction and an elongated elliptical shape in the left and right are combined.

The hole 182 formed in the air tap 180 increases the shearing force acting on the air bubble as the contact area with the air bubble increases, thereby increasing the amount of air bubbles generated. However, if the size of the hole is excessively increased as in the case of the cross elongation type, reliability of the air tap may be a problem, and it is desirable to form a long hole.

The holes of the air tap 180 in which the long hole is formed are elongated in the left and right direction and the amount of air bubbles is increased at a ratio of the height of the hole in the longitudinal direction to the length of the hole in the right and left directions at a ratio of 1: It is preferable that the ratio of the height of the holes of the long holes to the length of the right and left holes is 1: 4 to 6.

As the washing water passes through the pressing portion 130, the sucked air is secondarily pulverized. The air tap 180 is spaced apart from the pressing portion 130 at a predetermined interval. After the air sucked is sufficiently secondarily crushed through the pressing portion 130, the air tap 180 is again passed through the air tap 180, Increase the amount of generation. Therefore, it is preferable that the distance L3 of the air tap 180 separated from the pressing portion 130 to maintain the distance of the diameter of the air tap section D or more, in order to maximize the amount of air bubbles generated.

As the thickness of the air tab 180 becomes thinner, the possibility of clogging due to foreign substances is lowered, and there is an advantage that mass production is easy. The thickness of the air tab 180 is not significantly different in the effect of pulverizing air, and it is preferable that the thickness of the air tab 180 is in the range of 2 to 5 mm.

The discharge pipe 220 has a shape in which the side end face of the flow path is reduced at the portion where the washing water flows. The discharge end of the air grinding pipe 110 is connected to the discharge pipe 220 so as to reduce the volume of the flow pipe of the discharge pipe 220 connected to the tub 18 or the sump 20, Has a shape in which the side end face of the flow path is reduced at the portion where the washing water flows.

Referring to FIG. 7, the air jet generator 100 is disposed on the lower side of the dishwasher 10. The air jet generator 100 is disposed at a lower portion of the dishwasher 10 in consideration of vibration and noise generated in the process of sucking in air and forming air bubbles and is disposed close to the pump 40 Respectively.

The inlet pipe 210 includes an inlet pipe fixing portion 212 for fixing the inlet pipe 210. The air jet generator 100 may include an inflow pipe fixing part 212 for minimizing such vibration since air is sucked and vibration occurs as it is crushed. The inlet pipe fixing portion 212 can be fixed to the lower portion of the cabinet 14. The discharge pipe 220 may include a discharge pipe fixing part (not shown) for fixing the discharge pipe 220, and the discharge pipe fixing part may be fixed to the side surface of the cabinet 14.

8, the height (Oh) of the center of the discharge end of the pressing portion 130 from the lower end of the dishwasher 10 is the height (Ih) of the center of the inflow end of the decompression portion 120 from the lower end of the dishwasher 10 . Since the center of the discharge end of the air pulverizing pipe 110 is disposed higher than the center of the inflow end, even if the pump stops operating, residual water remaining in the air jet generator 100 is discharged to the inflow pipe 210, The water is not accumulated in the generator 100.

In one embodiment, the height (Oh) of the center of the discharge end of the pressurizing portion 130 from the lower end of the dishwasher 10 and the height (Ih) of the center of the inflow end of the depressurizing portion 120 from the lower end of the dishwasher ) May be formed in the same manner.

FIG. 9 is a perspective view of an air jet generator including a noise reduction chamber according to another embodiment of the present invention, and FIG. 10 is a sectional view taken along the line A-A 'in FIG. 11 is a view showing the progress of air and noise of a noise reduction chamber according to another embodiment of the present invention.

9 to 11, the noise reduction chamber 400 and the air jet generator including the same according to another embodiment of the present invention will be described. The noise reduction chamber 400 according to the present embodiment includes the air intake part 140, As shown in Fig.

The noise reduction chamber 400 according to the present embodiment surrounds the air intake part 140 'where noise is generated. Specifically, it surrounds the air suction part 140 ', a part of the pressing part 130, and the pressure-sensitive part 120.

The noise reduction chamber 400 includes a circumferential portion 410 surrounding the air intake portion and a protruding pipe 420 extending and extending from one side of the circumferential portion 410.

The peripheral portion 410 extends parallel to the direction of the pressing portion while maintaining the same cross-sectional area from the inlet end of the pressure-reducing portion 120. [ The peripheral portion 410 forms a space for noise reduction with the air grinding tube 110. The inner surface of the peripheral portion 410 is spaced apart from the air suction portion 140 by a predetermined distance and forms a protruding pipe 420 which is opened upward at a position adjacent to the impeller.

The protruding pipe 420 is formed in an upward direction from one side of the peripheral portion 410. The protruding pipe 420 is formed with a suction port that opens upward in the circumferential portion 410 at a portion where the decompression portion 120 starts to be decompressed. The protruding pipe 420 is spaced as far as possible from the air suction unit 140 in the noise reduction chamber 400. The protruding pipe 420 is connected to the connection flow path 330 at an upper portion thereof. The connection flow path 330 is connected to the turbine.

The air jet generator 100 according to the present embodiment has the same function and shape as the air jet generator described with reference to Figs. 3 to 8 except for the air suction portion 140 '.

The air suction unit 140 'according to the present embodiment forms a suction port 142' that opens downward from one side of the decompression unit 120. The air suction unit 140 'is formed in a downward direction from one side of the decompression unit 120 so that residual water in the lower portion of the noise reduction chamber can be sucked in the air suction process even if residual water exists in the noise reduction chamber 400.

The air suction part 140 'includes an air suction pipe 144' protruding from one side of the decompression part 120 and forming a flow path for sucking air therein. The end of the air suction pipe 144 'is spaced a certain distance from the peripheral portion 410 of the noise reduction chamber 400.

Referring to FIG. 11, when the air jet generator 100 operates, a negative pressure is generated at a portion where the depressurization of the depressurization unit 120 is terminated, so that external air is introduced into the air intake unit 140 '. In the air jet generator 100 according to the present embodiment, air is introduced into the noise reduction chamber 400 through the protrusion pipe 420, as shown in FIG. 11 (a). The air introduced into the noise reduction chamber 400 flows into the air suction unit 140 and is injected into the air jet generator 100.

On the other hand, the noise generated when the air is introduced into the air suction unit 140 is transmitted to the inside of the noise reduction chamber 400 along the air suction pipe 144 'of the air suction unit 140' The noise is reduced while being transmitted to the protruding pipe 420 along the inner side of the peripheral portion 410 of the cover 410. [

12 is a block diagram of a dishwasher including an air jet generator and a high-pressure pump according to another embodiment of the present invention.

12, the dishwasher 10 according to another embodiment of the present invention is configured such that the washing water stored in the sump 20 is supplied to the injection module 24 through the pump 40, (20).

The air jet generator 100 is connected to the tub 18 or the sump 20 via a separate high pressure pump 240 without being connected to the branch pipe 230 branched from the pump 40. Accordingly, the wash water stored in the sump 20 flows to the injection module 24 through the pump 40 or flows to the air jet generator 100 through the high pressure pump 240 to form an air bubble.

According to another embodiment of the present invention, when the dishwasher 10 includes a separate high pressure pump 240, the pressure of the washing water flowing into the air grinding tube 110 is strongly formed, which is advantageous for air bubble formation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

10: dishwasher 20: sump
40: Pump 100: Air jet generator
110: Air grinding tube 120: Pressure reducing section
130: pressing portion 140: air suction portion
170: impeller 180: air tap
210: inlet pipe 300, 400: noise reduction chamber
310: chamber bottom 320: chamber top
410: circumference 420: projecting tube

Claims (17)

And an air jet generator for sucking air into the air suction part to generate air bubbles in the washing water,
And a noise reduction chamber for reducing noise generated in the air jet generator. The method according to claim 1,
The air jet generator includes:
An impeller applying centrifugal force to the washing water flowing;
A decompression unit that reduces the pressure of the washing water that has passed through the impeller;
An air suction unit for injecting air into the decompression unit;
A pressurizing portion for increasing pressure to crush the air introduced from the air suction portion; And
And an air tap having a plurality of holes formed therein for crushing air contained in washing water that has passed through the pressing portion. The method according to claim 1,
Wherein the noise reduction chamber reduces noise generated in the air suction unit. The method according to claim 1,
Wherein the noise reduction chamber is connected to an upper portion of the air suction portion. 5. The method of claim 4,
Wherein the air suction part forms an inlet opening upwardly. 5. The method of claim 4,
The noise reduction chamber
A lower portion of the chamber extending from the air suction portion to form an extended flow path than the air suction portion; And
And an upper portion of the chamber that maintains a constant spacing of the expanded channel area of the lower portion of the chamber. The method according to claim 6,
Wherein the lower portion of the chamber forms an inclined surface at a portion where the cross-sectional area of the flow path greatly expands. The method according to claim 1,
Wherein the noise reduction chamber is configured to surround the air intake part. 9. The method of claim 8,
Wherein the air suction part forms a suction opening opened in a downward direction. 9. The method of claim 8,
The air jet generator includes:
An impeller applying centrifugal force to the washing water flowing;
A decompression unit that reduces the pressure of the washing water that has passed through the impeller;
An air suction unit for injecting air into the decompression unit;
A pressurizing portion for increasing pressure to crush the air introduced from the air suction portion; And
And an air tap having a plurality of holes formed therein for crushing air contained in washing water having passed through the pressing portion,
Wherein the noise reduction chamber is configured to surround a portion of the pressing portion and the pressure-sensitive portion. 11. The method of claim 10,
The noise reduction chamber
A peripheral portion surrounding the air suction portion; And
And a protruding tube extending and extending from one side of the peripheral portion. 12. The method of claim 11,
Wherein the air suction portion is disposed at a portion where the depressurization of the depressurization portion ends,
Wherein the protruding tube is formed at a portion adjacent to a portion where decompression of the decompression portion of the peripheral portion starts. 3. The method of claim 2,
Wherein the shape of the plurality of holes formed in the air tap is elongated in the left and right direction. A tub for receiving a dishware;
A spray module for spraying wash water toward the tableware in the tub;
A sump for supplying wash water to the injection module;
A pump for feeding the wash water stored in the sump to the injection module;
An air jet generator for receiving a part of the washing water fed from the pump to form an air bubble in the washing water and discharging the air bubble to the sump; And
And a noise reduction chamber for reducing noise generated in the air jet generator,
The air jet generator
An impeller applying centrifugal force to the washing water flowing;
A decompression unit that reduces the pressure of the washing water that has passed through the impeller;
An air suction unit for injecting air into the decompression unit;
A pressurizing portion for increasing pressure to crush the air introduced from the air suction portion; And
And an air tap having a plurality of holes formed therein for crushing air contained in washing water that has passed through the pressing portion. 15. The method of claim 14,
Wherein the noise reduction chamber is connected to the upper portion of the air suction unit. 15. The method of claim 14,
Wherein the noise reduction chamber is configured to surround the air intake part. 17. The method according to claim 15 or 16,
Further comprising a connection channel connecting the noise reduction chamber and the tub.

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