KR100717475B1 - Dish washer - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly, to a dishwasher in which no residual water of steam remains in the steam generator.

According to the present invention, a tub disposed inside the cabinet; A steam generator disposed on a side wall of the tub and providing steam to the tub; And a drain pipe connected to the tub and the steam generator to drain water remaining in the steam generator to the tub.

By the mounting structure of the steam generator of the dishwasher according to the present invention, the steam generator which was mounted in the lower machine room of the dishwasher is located in the middle of the dishwasher. Therefore, when the steam generator is not operated, the residual water in the bucket is completely discharged, thereby preventing the growth of bacteria in the bucket.

Steam generator, forming unit, heater, air brake, drain valve

Description

Dishwasher {dish washer}

1 is an exploded perspective view showing a mounting structure of the steam generator according to the present invention.

Figure 2 is a perspective view showing a forming structure formed on the side wall of the dishwasher tub according to the present invention.

Figure 3 is a perspective view of the steam generator and the air brake according to the present invention.

Figure 4 is a perspective view showing a forming structure of the side case of the dishwasher according to the present invention.

Figure 5 is a cross-sectional view showing a state in which the steam generator according to the invention mounted between the tub and the case.

                  <Description of Major Symbols in Drawing>

      20: steam generator 24: heater

      41: tub forming part 51: case forming part

      24: drain valve

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly, to a dishwasher in which no residual water of steam remains in the steam generator.

In general, the dishwasher is a home appliance for cleaning the food residue on the surface of the dish by the high-pressure washing water sprayed from the spray nozzle. Such a dishwasher includes a tub in which a washing tank is formed, and a sump mounted on the bottom of the tub to store washing water. In addition, the washing water is moved to the spray nozzle by the pumping action of the washing pump mounted in the sump, and the washing water moved to the spray nozzle is sprayed at a high pressure through the spray hole formed at the end of the spray nozzle. In addition, the washing water sprayed at a high pressure hits the surface of the tableware, and dirt, such as food residues on the tableware, falls to the bottom of the tub.

On the other hand, the dishwasher is a pre-washing process is carried out before the start of the washing in order to easily remove the foreign matter on the dish. However, there is a problem that foreign matter does not fall well even by pre-cleaning, a steam generator for supplying high-temperature steam into the tub has been proposed.

In detail, the steam generator includes a bucket and a heater and is installed in the machine room under the dishwasher. More specifically, the steam generator is configured to include a heater inside the water tank. In the steam generator, water is stored in the water tank, and water is heated and steam is generated due to the heating of the heater submerged in the stored water. The steam generated in this way is moved through the steam duct connected from the steam generator to the inside of the cleaning tub. The steam thus moved is sprayed on the dish placed in a specific position. This allows the dishes to be washed more effectively.

However, the conventional steam generator is installed in the machine room formed under the dishwasher. Therefore, a separate duct for guiding steam into the tub is formed to extend. Because of this, there is a problem in the manufacturing complexity and the increase in manufacturing cost to form a duct separately.

In addition, the dishwasher should discharge the remaining water in the bucket after the washing stroke. However, the position of the steam generator is located in the lower portion of the dishwasher is incomplete discharge of residual water. Then, bacteria and the like grow in the remaining water. Such bacteria and the like are introduced into the tub through the steam supply duct. Therefore, there is a problem that has an unsanitary effect on the dishwasher.

An object of the present invention has been proposed to solve the above problems, the residual water is completely discharged from the water tank of the steam generator to suppress the growth of bacteria in the water tank, to reduce the steam supply pipe to improve the steam injection force, as much as the reduced steam supply pipe It is an object of the present invention to provide a dishwasher which reduces the manufacturing cost.

According to an aspect of the present invention for achieving the object as described above, the tub disposed inside the cabinet; A steam generator disposed on a side wall of the tub and providing steam to the tub; And a drain pipe connected to the tub and the steam generator to drain water remaining in the steam generator to the tub.
According to another aspect of the invention, the tub disposed inside the cabinet; A steam generator disposed above the bottom surface of the tub and providing steam to the tub; And a drain pipe connected to the tub and the steam generator to drain water remaining in the steam generator to the tub.
According to another aspect of the invention, the tub disposed inside the cabinet, the communication hole formed in the side wall; A steam generator disposed on a side wall of the tub and generating steam; And a steam supply duct and a drain pipe connected to the communication hole between the steam generator and the tub to discharge steam and residual water generated in the steam generator into the tub.
According to another aspect of the invention, the tub disposed inside the cabinet; An air brake connected to the tub to discharge water to the tub; And a steam generator disposed on a side wall of the tub and connected to the air brake so that water remaining therein is drained to the air brake.
According to another aspect of the invention, the tub disposed inside the cabinet; An air brake connected to the tub to discharge water and steam to the tub; And a steam generator disposed on the sidewall of the tub and connected to the air brake so that water and steam remaining therein are discharged to the air brake.
By the mounting structure of the steam generator of the dishwasher according to the present invention, the steam generator which was mounted in the lower machine room of the dishwasher is located in the middle of the dishwasher. Therefore, when the steam generator is not operated, the residual water in the bucket is completely discharged, thereby preventing the growth of bacteria in the bucket.

delete

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 an exploded perspective view showing a mounting structure of the steam generator according to the present invention.

Referring to FIG. 1, a mounting structure of a steam generator according to the present invention includes a main body 10 of a dish washing machine, a tub 40 having a space for storing dishes therein, and a tub forming formed on one side wall thereof, A case side panel 50 having a case forming formed to correspond to the tub forming, an air brake 30 disposed between the case forming unit 52 and the tub forming unit 41, and A steam generator 20 formed above the air brake 30 is included.

The operation of the steam generating device 20 having the above configuration will be briefly described. The steam generating device 20 generates steam by heating steam water introduced through the water supply pipe 22. The steam is introduced into the tub via the steam duct 23 and the communication hole 31. The steam introduced in this way is called the food in the dish to increase the efficiency of dish washing. On the other hand, when the soaking is completed, the drain valve 29 is opened so that the residual water remaining in the bucket flows into the air brake 30 and joins the washing water. Since the wash water is hot water, it increases the washing efficiency of the dishwasher.

2 is a perspective view showing a steam generator and an air brake according to the present invention.

Referring to FIG. 2, the steam generator 20 according to the present invention includes an air brake 30 having a water supply and drainage pipe and a flow meter, and steam generation water from the outside of the dishwasher 1. To the steam water supply pipe 22, a steam water supply valve 22a which is installed in a part of the steam water supply pipe 22 to control whether or not the steam water introduced from the outside, and the steam water supply pipe 22 A water tank 21 connected to serve as a chamber for generating steam, a heater 24 installed inside the water tank 21 to generate steam by heating steam water, and connected to a lower portion of the water tank 21. And a drain pipe 29 connected to an upper portion of the air brake 30, a drain valve 29 provided at a portion of the drain pipe 29, and a top of the water reservoir 21 and connected to the air brake ( Steam duct (2) connected to the tub communication hole 31 of 30) 3) and a water level sensor 25 installed above the water tank 21 to detect the water level of the steam water in the water tank 21.

In detail, the air brake 30 is formed between one side of the dishwasher 1, that is, between the tub 40 and the side cabinet panel 50, and supplies a feed hose hose 32 to which raw water for dishwashing is supplied. And, a water supply passage 34 that is a flow path for the washing water flowing from the water supply hose connector 32 is included. In more detail, a part of the water supply passage 34 is provided with a flow meter 33. The flow meter 33 has a rotation aberration is formed in the passage of the water supply passage 34, a magnet is attached to the blade of the aberration. The hall sensor is attached to an outer surface of the water supply passage 34, that is, an outer surface of the portion where the aberration is formed. Therefore, the rotation speed and the rotation speed of the rotation aberration are measured by the interaction between the magnet and the hall sensor, and the flow rate of the washing water passing through the water supply passage 34 is measured. In addition, a communication hole 31 communicating with the tub 40 is formed at a substantially central portion of the air brake 30. The communication hole 31 allows a part of the washing water introduced from the water supply passage 34 to flow out into the tub 40. In addition, a steam outlet of the steam duct 23 is formed at one side of the communication hole 40. In detail, a steam injection nozzle may be further formed at the steam outlet to allow steam to be injected. And a plotter inlet (not shown) formed on one side of the lower air brake is formed to allow the wash water in the air brake 30 to flow into the flutter (not shown). The flutter serves to control the amount of washing water required by the dishwasher 1.

In addition, the steam water supply pipe 22 acts as a supply passage of steam water introduced from the outside. And a steam water supply valve 22a is formed in a part of the steam water supply pipe 22 to control the flow rate of the steam water. The steam water supply valve 22a uses a solenoid valve using magnetic force generated by electric force.

In addition, the bucket 21 is formed above the air brake 30. Therefore, this bucket 21 allows the remaining water drainage in the bucket 21 to be completely made. In other words, complete drainage occurs due to the free fall of the steam water. And the bucket 21 acts as a steam chamber for generating steam. Here, the steam chamber means a space where steam is generated. In detail, the bucket 21 is formed in a somewhat narrow space between the tub forming part 41 of the tub 40 and the case forming part 52 of the side case panel 50. Therefore, the thickness of the bucket 21 is formed at least smaller than the distance between the tub forming part 41 and the case forming part 52. The heat shield member 21a (see FIG. 5) is formed on the inner circumferential surface of the bucket 21. The heat shield member 21a is a high temperature heat is transmitted to the outside of the water tank 21 when the steam generator 20 is operated to become a high temperature, the side case panel 50 and the tub 40 To prevent damage or deformation to occur.

In addition, the heater 24 is formed inside the bucket 21. In detail, the heater 24 serves as a heating source for heating steam water introduced into the bucket to generate steam. As such a heater 24, a molded sheath heater is used. In detail, the mold-type sheath heater includes a resistance wire serving as a heating source, an insulator surrounding the resistance wire, a pipe formed to surround the outer circumference of the insulator, and a molding coated on the outer circumferential surface of the pipe. More specifically, both ends of the resistance wire is connected to a power source. This power source causes resistance heat to be generated in the resistance line. The material of such a resistance wire is preferably nickel or an alloy of nickel and iron. As the insulator, magnesium oxide is preferred as an insulator, which is good in heat transfer but not in charge transfer. And it is preferable that the copper pipe which is excellent in thermal conductivity is used as the said pipe. And it is coated with a molding material on the outer peripheral surface of the copper pipe. Therefore, the surface temperature of the said copper pipe rises uniformly.

In addition, one end of the drain pipe 28 is connected to the lower portion of the bucket (21). The other end of the drain pipe 28 is connected to the upper portion of the air brake 30. In addition, a drain valve 29 is formed at a portion of the drain pipe 28 to control drainage of the bucket 21. In detail, the position of the drain pipe connected to the water tank 21 is formed at a portion where water is completely drained from the water tank 21 when the water drain valve 21 is opened. In more detail, when the steam generator 21 does not operate, the steam generator 21 is formed by communicating with the bottom surface of the bucket, which is a position where there is no residual water in the bucket 21. On the other hand, as the drain valve 29 is used a solenoid valve controlled by an electric force.

In addition, the water level sensor 25 is installed on the top of the water tank 21 to detect the water level in the water tank 21. In detail, the level sensor 25 is composed of an electrode level sensor using a plurality of electrodes. The water level sensor 25, the water supply valve 22a, and the water level control unit configured in the main control unit of the dishwasher 1 interact with each other to keep the water level of the water tank 21 constant.

In addition, one end of the steam supply duct 23 is formed in the upper one side of the bucket 21 and the other end is formed in communication with the communication hole 31 of the air brake. The steam duct 23 serves as a steam flow path through which the steam generated in the bucket 21 flows into the tub 40 through the communication hole 31. On the other hand, a steam valve 27 is further provided in a part of the steam supply duct. In detail, a solenoid valve is used as said valve. The steam valve 27 serves to prevent the source of contamination inside the washing tub to flow into the bucket (21). Thus, when the dishwasher is stopped, the steam generator is kept more clean.

3 is a perspective view showing a forming structure formed on the side wall of the dishwasher tub according to the present invention.

Referring to FIG. 3, one side wall structure of the dish washing tub according to the present invention includes a tub forming part 41 having a predetermined depth d1, a predetermined width w1, and a height h1 directed toward the inside of the tub. ) Is formed. In detail, such a forming is to form a predetermined space by the case forming unit to be described later. Therefore, the steam generator 20 and the air brake 30 may be mounted in the space.

In addition, a damping sheet 42 (see FIG. 5) having a predetermined thickness is laminated on the outer circumferential surface of the tub forming part 41 to further strengthen the shape of the tub.

Figure 4 is a perspective view showing a forming structure of the side case of the dishwasher according to the present invention.

Referring to FIG. 4, the case panel 50 of the dish washing machine according to the present invention has a predetermined width w 2 and a predetermined height h 2, and has a predetermined depth d 2 in the inner direction of the dish washing machine. The case forming part 52 recessed as is formed. In addition, the case panel 50 has a plurality of fastening holes 51 formed at one side thereof, and is coupled to the main body of the dish washer 1 by the holes 51 and the fastening member 53.

In detail, the forming unit 52 prevents deformation of the side case panel 50 and improves the strength of the side case panel 50. In more detail, the depth d2 of the case forming part 51 is formed to a depth corresponding to approximately half of the depth d1 of the tub forming part 41. Therefore, a space larger than the space formed between the portion in which the forming part is not formed is formed between the tub forming part 41 and the side case forming part 52. By doing so, a sufficient space is formed so that the air brake 30 and the steam generator 20 can be mounted.

Hereinafter, the mounting structure by the steam generator according to the configuration as described above with reference to the drawings will be described in more detail.

5 is a partial cross-sectional view showing a state in which the steam generator according to the present invention is mounted between the tub and the case.

Referring to FIG. 5, a predetermined space is formed between the tub forming part 41 and the case forming part 52. In other words, a space corresponding to D2 is formed. Here, the length is the sum of the length of D2 and the distance of d1. That is, the length of d1 means the depth of the case forming part 52, d2 means the depth of the tub forming part 41, d2 is formed as twice the d1. In other words, the width D2 of the portion where the forming portion is formed is formed deeper by d1 than the width of the width D1 of the portion where the forming portion is not formed, thereby securing more space by d1. And the steam generator 20 is mounted in this space.

By the dishwasher according to the present invention having the above configuration, the steam generator, which is mounted in the lower machine room of the dishwasher, is positioned in the middle of the dishwasher. Therefore, when the steam generator is not operated, the residual water in the bucket is completely discharged, thereby preventing the growth of bacteria in the bucket.

In addition, the remaining water is used as the washing water of the dish washing has the advantage of saving the washing water.

Furthermore, the length of the steam supply duct is shortened. Therefore, there is an advantage that the dish washing efficiency is improved by improving the steam injection pressure.

Claims (12)

A tub disposed inside the cabinet; A steam generator disposed on a side wall of the tub and providing steam to the tub; And And a drain pipe connected to the tub and the steam generator to drain water remaining in the steam generator to the tub. A tub disposed inside the cabinet; A steam generator disposed above the bottom surface of the tub and providing steam to the tub; And And a drain pipe connected to the tub and the steam generator to drain water remaining in the steam generator to the tub. A tub disposed inside the cabinet and having a communication hole formed in a side wall thereof; A steam generator disposed on a side wall of the tub and generating steam; And And a steam supply duct and a drain pipe connected to the communication hole between the steam generator and the tub to discharge steam and residual water generated in the steam generator into the tub. The method according to any one of claims 1 to 3, And a valve disposed in the drain pipe. The method according to any one of claims 1 to 3, The tub is formed in the dishwasher, characterized in that the forming portion is formed to accommodate the steam generator. The method according to any one of claims 1 to 3, The side wall of the tub is a dishwasher, characterized in that the damping sheet for rigid reinforcement is attached. The method according to any one of claims 1 to 3, A heater is disposed inside the steam generator, And a heat shield member disposed around the heater. A tub disposed inside the cabinet; An air brake connected to the tub to discharge water to the tub; And And a steam generator disposed on the sidewall of the tub and connected to the air brake so that water remaining therein is drained to the air brake. A tub disposed inside the cabinet; An air brake connected to the tub to discharge water and steam to the tub; And And a steam generator disposed on the sidewall of the tub and connected to the air brake so that water and steam remaining therein are discharged to the air brake. The method according to claim 8 or 9, And the air brake is disposed on a side wall of the tub. The method according to claim 8 or 9, The air brake is connected to the lower side of the water tank of the steam generator by a drain pipe, And a valve disposed in the drain pipe. The method according to claim 8 or 9, The water tank of the steam generator and the air brake is connected by a steam supply duct, And a valve is arranged in the steam supply duct.

Images