KR940008453Y1 - Device for drying tableware - Google Patents

Abstract

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Description

Dish dryer

1 is an external view of the water level detecting means of the present invention.

2 is a view showing an embodiment of the present invention.

(A) and (b) of FIG. 3 are views for explaining a process in which the conductive thin plate of the level sensing means is spaced apart from the conductive rod according to the level of the drip cup.

* Explanation of symbols for main parts of the drawings

1: pressure sensing means 2: adjusting rod

3a to 3c: conductive rod 4: connecting lead

5: air inlet pipe 6: pressure transfer means

7: tension spring 8: conductive thin plate

9: rubber pack 10: drip container

11: level sensing means 20: microcomputer

30: water level display means 40: alarm means

50: motor driving unit 60: heater driving unit

P1 ~ PS: Input Port P4 ~ P9: Output Port

R1 to R4: resistance

The present invention relates to a dish dryer, and in particular, in order to prevent an abnormal phenomenon such as an electric leak or the like from overflowing the drip tray container, the water level is displayed by dividing it into predetermined water level and the operation of the device is stopped when the limit water level is reached. It relates to a dish dryer.

In the conventional dish dryer, a drain hose is connected to the bottom of the drip tray to prevent water from overflowing from the drip container, the entire container is made of a transparent material, or only the front part of the drip container is made of transparent material so that the water level can be checked. By using it, the user was supposed to check the water level.

The first method using the drainage hose is restricted to the installation and use environment of the dish dryer, the second method was to prevent the water overflow only if the user checks the water level of the container with his own eyes.

Accordingly, an object of the present invention is to detect the water level according to the change in the water pressure of the water filled in the drip tray in order to solve the above problems of the prior art, and to generate the electric signal corresponding to the detected water level to the user step by step It is to provide a water level detection and display device to stop the operation of the load in order to display, and at the same time to notify the user as an alarm and to prevent abnormal operation of the device.

According to the features of the present invention for achieving the above object, the present invention is a drip tray container for collecting and storing water droplets generated by drying the washed dishes, a microcomputer for controlling the overall function of the dish dryer, In the dish drying apparatus comprising a motor driving unit for driving a motor for rotating a blowing fan, and a heater driving unit for driving a heater, by the water pressure generated corresponding to the water level of the drip container Water level sensing means for sensing the water level of the drip container into a plurality of levels and providing a level detection signal corresponding to each level among the plurality of levels to the microcomputer, and by the microcomputer Display means for controlling and displaying each level among the plurality of water level levels, and the water level of the drip tray container is small. It reaches the threshold level (limit level) is controlled by the micro computer comprises alarm means an alarm.

According to another feature of the present invention, the dish dryer of the present invention is a microcomputer stops the operation of the device for safety when the water level of the drip container reaches a predetermined limit level.

According to still another feature of the present invention, the water level sensing means includes one control rod connected to a power source, at least three or more conductive rods, and the control rod and at least three or more of the control rods by water pressure according to the water level of the drip container. Pressure sensing means consisting of a connection blocking means for selectively blocking the inside of the conductive rod, and one end is connected to the air inlet pipe of the pressure sensing means and the other end is located in the drip container and the air pressure by the hydraulic pressure And a pressure transfer means for providing the inside of the detection means, and a water level detection signal generation means for generating a water level detection signal by the output electrical signal of the pressure detection means.

According to still another characteristic feature of the present invention, the display means has a cathode connected to at least three output ports of the microcomputer, and each anode is predetermined. The resistance of is composed of at least three light emitting diodes connected to the ground (GND) to indicate the level of each level of the drip container can be distinguished.

According to still another characteristic feature of the present invention, the connection blocking means includes a conductive tension spring wound around the adjusting rod, a conductive thin plate connected to the tension spring, and the pressure transfer means connected to the conductive thin plate. It includes a rubber pack that moves up and down by the air pressure and the tension of the tension spring is transmitted through.

2 is a view showing an embodiment of the present invention, in the drawing, reference numeral 10 is a drip container, 11 is a water level sensing means for detecting the water level of the drip container 10, 20 is a microcomputer, 30 is Display means for displaying the water level of the drip container (10) in a predetermined step, 40 is an alarm means for sounding an alarm when the water level of the drip container 10 reaches the limit level, that is, just before full water, 50 is a motor The drive part 60 shows the heater drive part, respectively.

FIG. 1 is an external view of the pressure sensing means 1 constituting the water level sensing means 10 of FIG. 2, and FIG. 3 is a sectional view of the pressure sensing means 1. As shown in FIG.

In the drawings, 2 is a screw-shaped conductive control rod, 3a to 3c conductive rod, 4 is a connecting wire, 5 is an air inlet pipe, 6 is a hose for pressure transfer, 7 is a tension spring, 8 is a conductive thin plate, 9 is Each rubber pack is shown.

The present invention is connected to the water level detection means 11 to the output ports P1 to P3 of the microcomputer 20, the alarm means 40 that can sound an alarm, such as a speaker or a buzzer is connected to the output port P4 The display means 30 is connected to the output ports P5 to P7.

In the embodiment of the present invention, for the sake of simplicity, the water level level is divided into three and circuits are configured accordingly. However, the configuration of the water level sensing means 11 and the display means 30 is slightly changed to suit the equal index of the water level. It will be well understood.

Now, the operation of the present invention will be described in detail according to the present embodiment.

When there is no water in the drip container 10, since the pressure of the atmosphere and the pressure inside the pressure sensing means 1 are the same, all the conductive rods 3a to 3b are made of the conductive thin plate 8 by the tensile force of the tension spring 7. ), And the power supply Vcc is applied to all the conductive rods 3a to 3c through the conductive tension spring 7.

Therefore, a high level water level detection signal is applied to the input ports P1 to P3 of the microcomputer 20.

At this time, the microcomputer 20 outputs a low level lamp driving signal through the output ports P5 to P7.

As a result, the light emitting diodes 30a to 30c of the display means 30 become inoperative and no light is turned on. When the drip container 10 is filled with water and the water level reaches one third of the limit level, the flow of air introduced into the pressure sensing means 1 through the pressure transmitting means 6 is blocked and the drip container 10 By the water pressure of cold water, the internal air pressure of the pressure sensing means 1 is It will be as high as Torr.

Therefore, as the rubber pack 9 is slightly raised by the pressure of air, the conductive rods 3a and the conductive thin plates 8 are separated from each other, and the conductive rods 3b and 3c and the conductive thin plates 8 are connected to each other. Will be maintained.

That is, terminal 4a is cut off and terminals 4b and 4a are connected.

Therefore, a low (L) level signal is applied to the input port P1 of the microcomputer 20, and a high (H) level signal is applied to the input ports P2 and P3, respectively. As a result, the output signal of the output port P5 of the microcomputer 20 becomes the high (H) level and the output signal of the output ports P6 and P7 becomes the low (L) level so that only the light emitting diode 3a is operated and turned on.

Thus, the user can know that the water level of the drip container 10 has reached 1/3 of the limit water level 10. When the water level is gradually raised to reach 2/3 of the limit level, the pressure in the pressure sensing means 1 is 2 Thor is released.

Thus, the rubber pack 9 is further raised so that the conductive rods 3a and 3b are spaced apart from the conductive thin plate 8.

In other words, the switches of the terminals 4a and 4b are opened and the switch is connected to only the terminal 4c.

Accordingly, the power supply vcc is cut off to the input ports P1 and P2 of the microcomputer 20 so that a low level signal is input, and a high level signal is provided only to the input port P3.

As a result, the microcomputer 20 outputs a high (H) level signal through the output ports P5 and P6 and a low (L) level signal through the output port P7.

Accordingly, the light emitting diodes 30a and 30b are operated and the diode 30c is inoperative, so that the user knows that the water level of the drip container 10 has reached 2/3 of the limit level.

Finally, when the water level of the sump container 10 reaches 3/3 of the limit level, that is, the water level, the internal air pressure of the pressure sensing means 1 is 3 Thor is spaced apart from the conductive thin plates 8 for all of the conductive rods 3a, 3b and 3c.

That is, the switches connected to the terminals 4a, 4b, and 4c are all in an open state.

Therefore, the low level sensor detection signal is applied to all the input ports P1 to P3 of the microcomputer 20, so that the microcomputer 20 is connected to the high H through each of its output terminals P4 to P7. At the same time as outputting a signal of the level), the operation of the motor driver 50 and the heater driver 60 is stopped.

Accordingly, all the diodes 30a to 30b are operated to light up and the alarm sounds from the alarm means 40 so that the user knows that the water level of the drip container 10 has reached the limit level. ) Empty the filled water.

The present invention as described above can automatically detect the water level of the drip container to inform the user visually and acoustically, and prevent the malfunction of the device due to water overflow, so that the user can use it more conveniently and safely.

Claims (4)

And a drip container 10, a microcomputer 20, a motor driver 50 controlled by the microcomputer 20 to drive a motor and a heater to rotate the blower fan, and a heater driver 60. In the dish dryer, the water level is divided into a plurality of level levels by a pressure generated corresponding to the level of the drip container 10, and a level detection signal corresponding to each level level among the plurality of level levels is detected. Water level detecting means (11) provided to the microcomputer (20), display means (30) controlled by the microcomputer (20) for distinguishing and displaying the respective water level levels among the plurality of water level levels; And a warning means 40, which is controlled by the microcomputer 20 and sounds an alarm when the water level of the drip container 10 reaches a predetermined threshold level level, wherein the water level of the drip container 10 is set to the small level. The dishwasher according to claim 1, wherein the microcomputer (20) stops the operation of the motor driver (50) and the heater driver (60). According to claim 1, wherein the water level detecting means (11) is connected to a power source (Vcc), one control rod (2) having conductivity, at least three conductive rods (3a to 3c), and the drip container Pressure sensing means (1) consisting of connection blocking means for selectively blocking the connection of the one control rod (2) and the at least three conductive rods (3a to 3c) by the water pressure according to the water level, and one side end Is connected to the air inlet pipe 5 of the pressure sensing means 11 and the other end is located in the drip container 10 to provide the air pressure by the water pressure into the pressure sensing means 1. And a water level detecting signal generating means (R1 to R3) for generating a water level detecting signal in accordance with the output electrical signal of the pressure sensing means (1). The display means (30) of claim 1, wherein each cathode is connected to at least three or more output ports (P5 to P7) of the microcomputer (20), and each anode is connected through a resistor (R4). And at least three light emitting diodes (30a to 30c) connected to the ground for distinguishing and displaying water level levels. The method of claim 2, wherein the connection blocking means is wound around the control rod (2) and has a conductive tension spring (7), a conductive thin plate (8) connected to the tension spring (7), the conductive thin plate And a rubber pack (9) connected to (8) and vertically moving by the air pressure provided through the pressure transfer means (6) and the tensile force of the tension spring (7).