JP3786022B2 - dishwasher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dishwasher, and more particularly to a structure of an injection nozzle for improving the washing performance of a dishwasher.
[0002]
[Prior art]
First, the necessity of the present invention will be described with reference to FIGS. A series of steps in a dishwasher is generally carried out in the order of "heat washing", "water rinsing", "warm water rinsing", and "drying". Detergency depends on the amount of water. The “warm water rinse” is also a preheating process for performing antibacterial and “drying” in the next process, and is heated to a maximum temperature of 70 to 80 ° C.
[0003]
Further, in the dishwasher 1, when air is entrained in the washing pump 2 that is a pressurized water supply means, the amount of pressurized water decreases and the noise increases, so the amount of water supplied in each process is determined by the balance with the amount of pressurized water. . Since the washing pump 2 which is a pressurized water supply means usually has a constant output, the amount of pressurized water is constant in each stroke, and the amount of water supplied determined by the balance with the amount of pressurized water in “heat washing” is the amount of water supplied in each stroke. This supply water amount is circulated by the washing pump 2, and spray water is applied to the dishes from the small holes of the rotary nozzle 3, swing nozzle 4, rotary nozzle 5, upper shower fixed jet nozzle 6 and spot nozzle 7, and dirt is removed in the washing process. Rinse the tableware in the rinse process.
[0004]
After the rinsing process is completed, air is sent to the PTC heater by a blower fan, and warm air is sent from the blower port 8 into the washing tank 9 to dry the dishes. The above-mentioned conventional product is a thin desktop dishwasher having a depth of 23.5 cm that can be installed even in a narrow space. Since it is thin, the arrangement of the tableware has a configuration in which it is set in two places, the upper car 10 in FIG. 3 and the lower car 11 in FIG. The newly developed product has a structure in which the set position of the upper car 10 in FIG. 3 can be changed.
[0005]
That is, the roller 13 integrated with the upper car 10 of FIG. 3 is inserted into the rail 12 of FIG. 2, but the space between the top surface and the upper car 10 can be changed by setting the roller 13 part in two steps (32 mm). The upper basket for tableware storage can be set in two stages, upper and lower, so that even large dishes can be set.
[0006]
However, with the current structure, when the space is increased, if the upper car 10 is lowered, the upper car 10 and the rotary nozzle 5 (the bowl-shaped rotating nozzle disposed in the approximate center of the washing tank) will hit and cannot be washed. Become. If the height of the main body is increased, the rotary nozzle 5 can be used. However, the height is currently limited from the installation space of the kitchen, and the rotary nozzle 5 is removed. However, when the rotary nozzle 5 was removed, the cleaning performance of the tableware arranged in the tableware storage lower basket 11 shown in FIG. Furthermore, this time, the lower basket 11 for storing tableware adopts a left-right switching method that can be installed on either the left or right side, so that the arrangement of the tableware and the position of the chopstick basket 14 change. If the position of is placed on the right side, the cleaning performance of the chopstick basket 14 will be significantly reduced.
[0007]
[Problems to be solved by the invention]
In consideration of the various problems described above, the present invention allows the water jetted from the nozzle to hit the tableware even when the upper tableware basket is set in two upper and lower stages, or when the lower tableware basket is switched left and right. An object of the present invention is to provide a dishwasher with improved washing and rinsing performance by making the arrangement of the rotary nozzle, the fixed nozzle and the fixed nozzle shape in the washing tank in accordance with the tableware arrangement.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, a dishwasher of the present invention comprises a main body having an outer shell covering a tableware storage tub that can store an upper basket and a lower basket for storing dishes, a pressurized water supply means for cleaning dishes, and water. A heater for raising the temperature in the tableware storage tank, and a drainage pump for discharging the cleaning water in the tableware storage tank to the outside of the machine, the dish washing process, the water rinsing process, In a dishwasher equipped with a control device for performing a hot water rinsing process and a drying process, a plurality of rotating nozzles for injecting water are provided below the tableware storage tank with respect to the tableware in the lower basket, and a plurality The nozzle holes are arranged in a staggered pattern in two rows, and a rod-shaped fixed nozzle that crosses toward the row in which the spray direction of the spray water is opposed and sprays in a V shape is provided, and fixed spray is performed on the tableware in the upper basket Nozzle almost every tableware on top of washing tank A plurality of the fixed injection nozzles having different shapes were arranged in a plurality of rows.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention, its configuration, its operation, and effects will be described in detail with reference to FIGS. 1, 5, 6, 7, 7, 9, and 10. FIG. First, a description will be given with reference to FIGS. FIG. 1 is a perspective view showing the internal structure of the tabletop dishwasher of the present invention. FIG. 5 is a perspective view showing the appearance of the tabletop dishwasher of the present invention.
[0011]
The dishwasher 1 has a box-shaped outer frame 21. In the outer frame 21, the cleaning tank 9 is disposed, and a door 22 that opens forward is provided in front of the cleaning tank 9. The door 22 includes an upper door 22a and a lower door 22b. A handle 23 and a lock button 24 are provided at the center of the door 22. The door 22 can be opened by the arm 25 by pressing the lock button 24, releasing the lock, and pulling the handle 23 forward. The lower door 22b is provided with a latch 27 for interlocking the ON / OFF operation of the lid switch 26. The washing tank 9 is provided with a step portion 28 and has a structure in which a tableware storage lower basket 29 shown in FIG. 6 is installed. The lower basket 29 can be switched left and right in order to make it easier to put tableware when the main body is placed right or left. In addition, a chopstick basket 30 can be arranged in the center of the tableware lower basket 29. The tableware storage lower basket 29 can be cleaned by setting a large plate, a middle plate, a frying pan, a pan, a bowl, a glass, or the like. FIG. 7 shows an upper basket 31 for storing dishes. The upper car 31 is set by inserting an upper guide 33 or a lower guide 34 into rails 32 provided on the left and right side surfaces of the cleaning tank 9. When the upper guide 33 is inserted into the rail 32, a large bowl with a diameter of 14 cm can be set. When the lower guide 34 is inserted into the rail 32, a large plate having a diameter of up to 27 cm can be set in the lower basket 29 for storing dishes.
[0012]
As shown in FIG. 5, a cleaning pump 36, a drainage pump 35, and a blower device 37 are disposed below the cleaning tank 9, and the cleaning pump 36 has a pump motor 38. Under the leftover filter 39, a sheathed heater 40 for changing the water into hot water is disposed. Rotating nozzles 41 that rotate about the central portion are provided right and left just below the tableware storage lower basket 29. A plurality of small holes 42 are provided on the upper surface of the rotary nozzle 41. An operation panel 43 is attached to the lower front surface of the cleaning tank 9, and a controller for controlling each electrical component is disposed on the rear side. 44 is a power switch.
[0013]
Here, the washing, water rinsing, warm water rinsing, and drying operations of the dishwasher 1 having the above-described configuration will be described. First, in the cleaning operation, the power switch 44 in FIG. 1 is pressed, the course setting button on the operation panel 43 is pressed, and then the start button 45 is pressed to energize the water supply solenoid valve (not shown), The water is supplied to the cleaning tank 9 from the water source, the pump motor 38 is energized while the sheath heater 40 is energized, the runner in the cleaning pump 36 is rotated, and the water reservoir disposed at the bottom of the cleaning tank 9 is rotated. Water is sucked in from the section, and pressure water is supplied from the pump discharge port 47 to the two rotary nozzles 42 and the V-type injection nozzle 48 disposed below the tableware storage lower basket 29 through the pressure water supply pipe 101. To do. Further, pressure water is supplied into the upper shower fixed spray nozzles 60, 70, 80 disposed above the tableware storage upper basket 31. Then, by spraying pressure water directly onto the tableware in the tableware storage lower basket 29 and the tableware storage upper basket 31 from the small holes 42 of the respective nozzles, the attached dirt is peeled off and dispersed. At this time, the temperature of the hot water is raised by about 60 ° C. If cleaning has been performed for a certain time, the energization of the sheathed heater 40 is stopped to end the cleaning operation, the drain pump 35 is driven, and the cleaning water in the cleaning tank 9 is discharged outside the apparatus.
[0014]
Next, the water rinsing operation is repeated several times for about 1 to 2 minutes with the sheathed heater 40 turned off. At the time of the hot water rinsing operation, the sheathed heater 40 is energized, and the process proceeds with the same process as the cleaning process. Hot water is raised to about 80 ° C. Finally, the drying operation energizes the air blower 37 to rotate the fan in the air blower 37, blows air to a PTC heater (not shown), and warms the air from the air outlet 51 through the air passage 50. The air is blown into the cleaning tank 9.
[0015]
Due to this hot air, water droplets adhering in the washing tank 9 and residual water, and further water droplets adhering to the tableware stored in the tableware storage lower basket 29 or the tableware storage upper basket 31 are removed. It changes into steam and is discharged out of the machine through the exhaust port 52. And if drying operation is performed for a fixed time, the operation | movement of the dishwasher 1 will be complete | finished.
[0016]
Next, the arrangement configuration and shape of each nozzle, which is the main configuration of the present invention, will be described with reference to FIGS. 8, 9, 10, and 11. FIG. 8 is a cross-sectional view and a front view showing the structure of the rod-like fixed nozzle of the dishwasher equipped with the present invention. FIG. 9 is a top view showing the structure of the rod-like fixed nozzle. This nozzle 60 has a structure that uniformly sprays the spray water for dish washing / rinsing at the left end from the front of the main body corresponding to the vertical movement of 32 mm of the upper basket for tableware storage even if the size of the tableware changes. Is. The rod-shaped tube is inclined and provided with three injection holes 62a, 62b, 62c. Bello 63a, 63b, 63c is provided at the lowermost end of each of the injection holes 62a, 62b, 62c so that the spray water diffuses along the velocities. The angle of the rod-shaped tube is set to about 35 °, the spout water discharge position is changed, and the structure corresponds to the vertical movement and size of the tableware. 61 is a nail | claw and has a structure fixed to the square hole of the top | upper surface of a washing tank.
[0017]
Next, the fixed nozzle corresponding to the spray water to the soup bowl and tea bowl will be described with reference to FIGS. 10, 11 and 12. FIG. FIG. 10 is a longitudinal section of the two-stage injection diffusion fixed nozzle of the present invention. FIG. 11 is a bottom view of the two-stage injection diffusion fixed nozzle of the present invention. FIG. 12 is a cross-sectional view of the two-stage injection diffusion fixed nozzle of the present invention. The two-stage injection diffusion fixed nozzle 70 is provided with two injection holes 72a and 72b. The rear injection hole 72a has an inclination of about 35 °. This is so that even when the upper basket is set 30 mm below and a small teacup is washed, the spray water smoothly enters the inner surface of the tableware. 74a and 74b are grooves having a width and a depth of about 0.5 mm provided at the upper outlet of the injection hole. By providing this groove, the spray water is easily diffused. In the present invention, a plurality of the two-stage spray diffusion fixed nozzles are inserted and the claw 61 is inserted into the square hole on the cleaning tank side and fixed.
[0018]
FIG. 13 is a top view and a right side view of the V-type injection fixed nozzle of the present invention. The V-type injection fixed nozzle is fixed by inserting a guide 95 into a substantially central portion of a pressure water supply pipe provided at a lower portion of the cleaning tank and rotating the guide 95 to a stopper position 93. Reference numeral 94 denotes a cylindrical labyrinth that prevents leakage of pressure water. This is a structure in which projections 92 are formed in a staggered manner on a cylindrical peripheral portion of a cylinder, and an injection hole 91 is disposed at almost the tip thereof. The jet water is discharged into a V shape while crossing the water discharged from the opposing jet holes, and goes up to the top of the cleaning tank. The aim of cleaning is to clean chopsticks, spoons, forks, knives, etc. set in a chopstick basket. The product of the present invention has a configuration in which the lower basket can be arranged on either the left or right side, so that the position of the chopsticks basket changes depending on whether the lower basket is placed on the right side or on the left side. It is made into the structure corresponding to both by making it inject.
[0019]
FIG. 14 is a perspective view of the hemispherical injection fixed nozzle of the present invention. This nozzle is provided in front of the top surface of the washing tank and is used for washing small dishes, small bowls, and the like. As the upper cage moves up and down by about 30 mm, the direction in which the water comes out is almost parallel to the top surface, 45 degrees below the top surface, and perpendicular to the top surface, and the spray water is discharged and applied to the tableware. Structure. By forming the nozzle into a hemispherical protrusion 82, the shape corresponds to a plurality of injection holes. It is a nozzle that discharges water from three directions, that is, a horizontal injection hole 84a, an oblique injection hole 84b, and a lower injection hole 84c. Reference numeral 81 denotes a diffusion slit. The claw 61 is fixed to the top of the washing tank.
[0020]
FIG. 15 is a top view, an enlarged top view, and an enlarged sectional view of the pressure water supply pipe 101 injection nozzle of the present invention. This spray hole is used for cleaning the chopstick basket. Two each of two injection holes are provided. These two places are structured so that the main body to which the lower basket can be attached to the left and right can cope with changes in the location of the chopstick basket. The interior of the cleaning tank, which is a dead space, is cleaned with four holes having an outer diameter of 3 mm. The pressure water entered from the inflow port 108 is jetted from four locations such as the rotary nozzle fixed shafts 102 and 104 and the jet nozzles 105 and 107 from the fixed nozzle fixed shaft 103 and the pressure water supply pipe 101. This injection has a structure in which an angle (θ) is given to the pressure water injected vertically by providing an inclination 108 in the slit 106 connected to the injection hole 105. Two specific examples of the present embodiment described above will be described. First, in washing dishes in an upper basket for storing dishes, two rows of fixed nozzles are arranged in accordance with the arrangement of the dishes. In the back row, fixed nozzles are arranged to match the tableware of 6 soup bowls and 6 bowls from the left. In this fixed nozzle, the leftmost nozzle is provided with three injection holes in the vertical direction, and the other fixed nozzles are provided with two injection holes in the arrangement direction of the tableware to wash the entire tableware. It was set as the structure which pours water or rinse water. In the front row, six fixed nozzles are arranged in accordance with 10 small dishes. And it is set as the structure which provides two injection holes in each fixed nozzle. With the above nozzles, spray water is applied to the tableware surface even if the upper basket is shifted 32 mm up and down. Next, dishwashing of the lower basket for tableware storage will be described. The tableware set to the lower basket for tableware storage is a platter, a middle plate, a cup, and chopsticks, spoons, forks, knives, etc. set in the chopsticks basket. In addition, cooking utensils such as frying pans and pans can also be inserted. The tableware storage lower basket corresponds to the arrangement in which the left and right sides are interchanged depending on the arrangement of the main body, so that rotating nozzles are arranged on the left and right, and a fixed nozzle that injects into a V shape in the center. Since the main body is a size that can be installed even in a narrow space (thickness 23.5 cm depth, width 55 cm, height 61 cm), it is a structure that cannot provide three rotating nozzles, so V-shaped injection in the center Installation of a fixed nozzle is essential. The various nozzle arrangements described above enable water spraying without dead space. This can improve the cleaning performance.
[0021]
【The invention's effect】
As described above, according to the present invention having the above-described configuration, the spray water can be uniformly distributed in the entire cleaning tank, the dead space for cleaning in the cleaning tank is eliminated, and cleaning unevenness is reduced. Cleaning can be performed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an internal structure of a tabletop dishwasher equipped with the present invention.
FIG. 2 is a perspective view showing the structure of a conventional tabletop dishwasher.
FIG. 3 is a perspective view of an upper car.
FIG. 4 is a perspective view of a lower car.
FIG. 5 is a perspective view showing the appearance of a tabletop dishwasher equipped with the present invention.
FIG. 6 is a perspective view of a lower basket for storing dishes of a tabletop dishwasher equipped with the present invention.
FIG. 7 is a perspective view of an upper basket for storing dishes of a tabletop dishwasher equipped with the present invention.
FIGS. 8A and 8B are a longitudinal sectional view and a front view of a rod-like fixed injection nozzle of the present invention. FIGS.
FIG. 9 is a top view of the rod-like fixed injection nozzle of the present invention.
FIG. 10 is a longitudinal sectional view of a two-stage injection diffusion fixed nozzle of the present invention.
FIG. 11 is a bottom view of the two-stage injection diffusion fixed nozzle of the present invention.
FIG. 12 is a cross-sectional view of the two-stage injection diffusion fixed nozzle of the present invention.
FIGS. 13A and 13B are a top view and a right side view of a V-type injection fixed nozzle according to the present invention. FIGS.
FIG. 14 is a perspective view of a hemispherical injection fixed nozzle of the present invention.
FIG. 15 is a top view, an enlarged top view, and an enlarged sectional view of a pressure water supply pipe injection nozzle according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Dishwasher, 2 ... Washing pump, 3 ... Rotating nozzle, 4 ... Swing nozzle, 5 ... Rotary nozzle, 6 ... Upper shower fixed injection nozzle, 7 ... Spot nozzle, 8 ... Air outlet, 9 ... Washing tank, 10 ... Upper basket, 11 ... Lower basket, 12 ... Rail, 13 ... Roller, 14 ... Chopstick basket, 21 ... Outer frame, 22 ... Door, 22a ... Upper door, 22b ... Lower door, 29 ... Lower basket for tableware storage, 30 ... Chopstick basket, 31 ... Upper basket for tableware storage, 32 ... Rail, 33 ... Upper guide, 34 ... Lower guide, 35 ... Drain pump, 36 ... Cleaning pump, 37 ... Blower, 38 ... Pump motor, 39 ... Leftover filter , 40 ... sheathed heater, 41 ... rotating nozzle, 42 ... small hole, 43 ... operation panel, 44 ... power switch, 45 ... start button, 46 ... water supply port, 47 ... pump discharge port, 48 ... V-type injection nozzle, 50 ... Blower passage 51: Blower port 52 ... Exhaust port 60 ... Rod-shaped fixed injection nozzle 70 ... Two-stage injection diffusion fixed nozzle 80 ... Hemispherical projection fixed nozzle 81 ... Slit 82 ... Hemispherical projection 84a ... Lateral injection Hole 84b: Oblique injection hole 84c Lower injection hole 91 ... Injection hole 92 ... Projection 93 ... Stopper 94 ... Cylindrical labyrinth 95 ... Guide 100 ... Injection water 101 ... Pressure water supply pipe 102 ... Rotation Nozzle fixed shaft, 103 ... Fixed nozzle fixed shaft, 104 ... Rotating nozzle fixed shaft, 105 ... Injection hole, 106 ... Slit, 107 ... Injection hole, 108 ... Inclination

Claims (7)

A main body having an outer shell covering a tableware storage tank capable of storing an upper basket and a lower basket for storing tableware, a pressurized water supply means for washing dishes, and changing water into warm water, and also controlling the temperature in the tableware storage tank A controller for raising the heater and a drainage pump for discharging the washing water in the tableware storage tank to the outside of the machine, and executing a tableware washing process, a water rinsing process, a hot water rinsing process, and a drying process; In the dishwasher provided, a plurality of rotating nozzles for injecting water are provided below the tableware storage tank with respect to the tableware in the lower basket, and a plurality of injection holes are arranged in a staggered manner in two rows. A rod-shaped fixed nozzle that crosses toward the opposite direction of the spraying water and injects it into a V shape, and the fixed spray nozzle is arranged on the top surface of the washing tank for each tableware. And what changed the shape of the fixed injection nozzle A dishwasher characterized by being arranged in multiple rows. The dishwasher according to claim 1, wherein a plurality of types of injection nozzles are disposed on the top surface of the washing tank, and each injection nozzle has a plurality of injection holes, and the injection angles of the injection holes are changed. A dishwasher characterized by being. In the dishwasher according to claim 2, one of the spray nozzles disposed on the top surface of the washing tank is provided with a slit or a groove in an outer peripheral portion of an upper portion or a lower portion of a spray water outlet of each spray hole, A dishwasher characterized in that it has a structure that diffuses spray water. 3. The dishwasher according to claim 2, wherein a slit or a groove is provided in an outer peripheral part of an upper part or a lower part of the jet water outlet of each jet hole so that the jet water is diffused. The dishwasher according to claim 2, wherein the attachment is made into a pressure water supply pipe part, and in fixing to the pipe, a guide is inserted and rotated and fixed, and a cylindrical labyrinth for preventing water leakage is provided in the attachment part. A dishwasher characterized by that. 3. The dishwasher according to claim 2, wherein the fixed nozzle arranged on the top surface has a hemispherical projection shape, a plurality of injection holes are provided on the hemispherical surface, and a slit is provided in a part of the injection hole. A dishwasher characterized by that. The dishwasher according to claim 1, wherein rails are provided on the left and right side surfaces of the tableware storage tank, upper guides and lower guides are provided on the left and right sides of the upper basket, and the upper basket is placed in the tableware storage tank in two stages. Dishwasher that can be set.

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