KR20050105707A - A display apparatus and method for the temperature and the frequency of water in a dish washer - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to a display device and a display method for displaying a water supply frequency for measuring the flow rate of the washing water flowing into the dishwasher and the temperature inside the dishwasher.

Water supply frequency and temperature display device of the dishwasher according to the present invention includes a flow rate sensing device for sensing the flow rate of the wash water flowing into the sump; A temperature sensing device for sensing a temperature inside the washing tank; A microcomputer to convert a signal transmitted from the flow rate sensing device into a water supply frequency, and to transmit a temperature sensed by the temperature sensing device; And a display unit including a first segment and a second segment to display the water supply frequency and temperature converted by the microcomputer.

By the water supply frequency and temperature display device of the dishwasher according to the present invention there is an effect capable of displaying the three-digit water supply frequency or wash water temperature through the display unit consisting of 88 segments.

Description

A display apparatus and method for the temperature and the frequency of water in a dish washer}

The present invention relates to a dishwasher, and more particularly, to a display device and a display method for displaying a water supply frequency for measuring the flow rate of the washing water flowing into the dishwasher and the temperature inside the dishwasher.

In general, the dishwasher is a convenient kitchen appliance that automatically removes food debris such as rice paste attached to the tableware by spraying high-pressure washing water and then removes it.

In addition, the dishwasher is the washing water flows into the air brake attached to the tub side, the washing water introduced to the air brake is moved to the sump. Then, the wash water moved to the sump is pumped by the washing pump and moved to the injection nozzle. The washing water moved to the spray nozzle is sprayed into the washing tank to wash the dishes stored in the washing tank.

Here, the washing water introduced into the air brake is dropped into the flow meter embedded in the air brake. Then, the flow meter generates a pulse while rotating, the water supply flow rate is measured by the water supply frequency according to the rotation speed of the pulse.

In detail, the water supply frequency is determined by counting the amount of rotation of the magnet attached to the flowmeter, and the water supply frequency is transmitted to the microcomputer with the pulse generated in the flowmeter. The frequency measured by the microcomputer is displayed on the display unit connected to the microcomputer.

On the other hand, the water supply frequency may be measured by a pressure switch mounted inside the tub.

Here, the set maximum value of the water supply frequency is three digits in the case of using a flow meter, and a three digit value including the first decimal point in the case of a pressure switch.

In addition, the numerical value displayed on the display unit may display not only the water supply frequency measured by the flow meter or the pressure switch but also the temperature inside the washing tank. And, the temperature inside the dishwasher is operating up to 77 ℃, which corresponds to about 170 ℃ when expressed in Fahrenheit.

Here, the display unit is mainly used 1888 segments or 888 segments.

In addition, when using 1888 segments or 888 segments, there is no obstacle in indicating the water supply frequency, but when using 88 segments, there is a problem in that the entire water supply frequency cannot be indicated. In addition, when the temperature inside the washing tank is expressed in degrees Celsius, it may be displayed in 88 segments, but in the case of Fahrenheit, the marking may not be possible.

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a display apparatus and method capable of displaying the temperature and water supply frequency of a three-digit number using 88 segments.

Water supply frequency and temperature display device of the dishwasher according to the present invention for achieving the object as described above is a flow rate sensing device for detecting the flow rate of the wash water flowing into the sump; A temperature sensing device for sensing a temperature inside the washing tank; A microcomputer to convert a signal transmitted from the flow rate sensing device into a water supply frequency, and to transmit a temperature sensed by the temperature sensing device; And a display unit including a first segment and a second segment to display the water supply frequency and temperature converted by the microcomputer.

In addition, the water supply frequency display method of the dishwasher according to the present invention comprises the steps of generating a pulse from the hall sensor; Delivering the pulse to a microcomputer; Converting the pulse to a water supply frequency at a microcomputer; And displaying the water supply frequency on a display unit consisting of first and second segments.

In addition, the water supply frequency display method of the dishwasher according to the present invention comprises the steps of sensing the pressure from the pressure switch; The pressure is transmitted to a microcomputer and converted into a frequency; And transmitting the frequency from the micom to a display unit consisting of first and second segments.

In addition, the temperature display method of the dishwasher according to the present invention comprises the steps of sensing the temperature inside the washing tank from the temperature sensor; Transmitting the sensed temperature to a microcomputer; The temperature transmitted to the microcomputer is connected to the microcomputer, and displayed on a display unit consisting of a first segment and a second segment.

By the above configuration, the water supply frequency or the washing water temperature of three digits can be displayed through the display unit composed of 88 segments.

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 and 2 are cross-sectional views schematically showing a dishwasher equipped with a water supply frequency and a temperature display device according to the spirit of the present invention.

1 and 2, the dishwasher 100 equipped with a water supply frequency and temperature display device according to the present invention has an outer shape, a tub 110 having a dish washing tank formed therein, and the tub 110. Is formed on the front of the door 111 for opening and closing the washing tank, and the sump 170 is formed in the center of the bottom surface of the tub 110 to store the washing water.

In detail, the air brake 200 is attached to the outer surface of the tub 110 to transfer the washing water provided from the water supply device to the sump 170, and the air brake 200 is provided with a device for controlling the water supply flow rate. In addition, the air brake 200 is connected to the water supply hose connector 210 to which the washing water for washing the dish is introduced, and one end thereof is connected to the water hose connector 210, and approximately U-shaped from the water hose connector 210. The water flow passage 220 is formed in a shape, and is connected to the other end of the water flow passage 210 includes a flow meter 300 for detecting the water flow rate while rotating by the wash water is supplied water.

In addition, the washing pump 180 is connected to the sump 170 and pumps the washing water stored in the sump 170 at a high pressure, and is attached to a rear surface of the washing pump 180 to drive the washing pump 180. The motor 190 is included.

In addition, the water guide 140 and the upper surface of the sump 170, which is a path for the washing water pumped from the washing pump 180 is moved, formed on the bottom of the washing tank to spray the washing water upwards A lower nozzle 160 and an upper nozzle 150 attached to an upper portion of the water guide 140 and extending in a vertical direction from the water guide 140 and positioned at a central portion of the washing tank, It is formed on the ceiling includes a top nozzle 155 for spraying the washing water vertically downward.

In addition, the upper rack 120 is mounted on the upper side of the upper nozzle 150 so that the dishes are washed by the upper nozzle 150, and the lower nozzle 160 so that the dishes are washed by the lower nozzle 160. Lower rack 130 is mounted to the upper side of the) is included.

In detail, the upper rack 120 is supported by a rail (not shown) provided on the inner surface of the tub 110, and performs the front and rear movement.

Hereinafter will be described the operation of the dishwasher 100 according to the present invention.

First, the user opens the door 111 of the dishwasher 100 and pulls the upper rack 120 and / or lower rack 130 to the outside of the washing tank. In addition, dishes are stored in the racks 120 and 130. Then, the door 111 is closed and power is applied to the dishwasher.

On the other hand, when power is applied to the dishwasher 100 and the washing step is performed, the washing water passing from the water supply source passes through the air brake 200, and the sump 170 connected to the air brake 200 is connected to the inside of the sump 170. The wash water flows in. Then, after a predetermined amount of washing water flows into the sump, the motor 190 is operated. In addition, by rotating an impeller (not shown) provided in the washing pump 180 coupled to the motor 190, the washing water is pumped to the lower nozzle 160 and the water guide 140.

In addition, the wash water pumped to the water guide 140 is finally moved to the top nozzle 155, the upper nozzle 150 is injected into the washing tank. In addition, the dishes stored in the racks 120 and 130 are washed by the sprayed washing water.

Here, the top nozzle 155 sprays the washing water vertically downward, and the upper nozzle 150 sprays the washing water vertically upward, thereby washing the dishes stored in the upper rack 120.

In addition, the lower nozzle 160 is sprayed the washing water vertically upward, the dishes stored in the lower rack 130 is washed. In addition, by forming an injection hole in the bottom surface of the upper nozzle 150, the washing water is sprayed in both the up and down directions, it can be configured to simultaneously wash the upper side of the tableware accommodated in the lower rack (130).

In addition, when the washing step is completed, the dirty washing water collected in the sump 170 is filtered by a filter (not shown). In addition, the washing water filtered with foreign matter is discharged to the outside of the dishwasher 100 through a drain pump (not shown).

In addition, when the washing water is discharged to the outside, clean washing water is introduced into the sump 170 again through an inlet, and sprayed through the spray nozzles 150 and 160 in the same manner as the washing step. The dishware is rinsed by the sprayed clean water.

In addition, when the rinsing step is completed, by going through the drying step, the washing operation is completed.

3 and 4 is a block diagram of a water supply frequency display device of the dishwasher according to the spirit of the present invention.

3 and 4, the water supply frequency display apparatus of the dishwasher according to the present invention is mounted inside one side of the air brake, and includes a flow meter 300 for measuring the flow rate of the wash water being supplied. In detail, the flow meter 300 includes an impeller 310 that rotates by the falling energy of the wash water being supplied, and a magnet 320 that is attached to one outer circumferential surface of the impeller 310 to generate a magnetic field.

In addition, the water supply frequency display device detects the magnetic field generated from the magnet 320 and generates a pulse and detects the number of pulses generated from the Hall sensor 400 is converted into a frequency The microcomputer 500 compares and determines the set frequency, and the display unit 600 for displaying the frequency converted by the microcomputer 500 to the user.

In detail, the display unit 600 includes 88 segments including a first segment 610 and a second segment 610 for numerically displaying the frequency.

Hereinafter, the function of the water supply frequency display device will be described.

First, the washing water supplied through the water supply hose connector 210 of the air brake 200 is moved along the water supply passage 220 in which one end of the water supply hose connector 210 is connected, and the water supply passage 220. The washing water moved along rotates the impeller 310 provided in the flow meter 300.

In addition, the hall sensor 400 detects a magnetic field generated from the magnet 320 rotating together with the rotation of the impeller 310 to generate a pulse. The pulse generated by the hall sensor 400 is transmitted to the microcomputer 500.

In this case, the pulse transmitted to the microcomputer 500 is converted into a frequency, and the microcomputer 500 compares the number of preset pulses to stop the water supply. The frequency measured by the microcomputer 500 is displayed to the outside through the display unit connected to the microcomputer 500.

On the other hand, in order to measure the flow rate of the washing water flowing into the washing tank, a pressure switch 700 mounted on the inner bottom of the sump 170 and measuring the pressure of the washing water stored in the sump 170 may be used.

In detail, the head pressure of the washing water is transmitted to the pressure switch 700 mounted in the sump 170 to detect a distance for pushing the diaphragm attached to the pressure switch. The pressure measured by the pressure switch 700 is transmitted to the microcomputer 500, and the microcomputer 500 converts the pressure into a frequency. In addition, the frequency is transmitted to the display unit 600 and displayed as a number.

On the other hand, the temperature inside the washing tank can be displayed through the display unit 600, it can be selectively displayed in Celsius or Fahrenheit. Here, when the temperature inside the washing tank is displayed in Fahrenheit, the numerical value should be displayed in three digits, and the display method is the same as the display method of the water supply frequency.

5 and 6 are flowcharts showing a water supply frequency display method of the dish washing machine according to the present invention.

Referring to FIG. 5, as a method of displaying a water supply frequency measured by a flowmeter, a pulse is generated from a hall sensor supporting a magnet mounted in the flowmeter (ST110), and the pulse is transferred to a microcomputer (ST120). And converting the frequency into a frequency (ST130), determining whether the frequency is a three digit number in the microcomputer (ST140), and displaying a hundred unit number on the second segment when the frequency is a three digit number (ST160). And determining whether or not a hundred unit number is displayed in the second segment and whether a predetermined time has elapsed (ST170), and the tenth unit and the single unit number are respectively displayed after the hundred unit number is displayed for a predetermined time period. A step ST180 displayed at the same time in two segments is included.

In detail, if the frequency is a two-digit number, a step of setting the hundreds number to zero is further included. And, if the hundreds digit is displayed in the second segment and the predetermined time has not elapsed, the hundreds digit is continuously programmed for the predetermined time.

As described above, the method of displaying the temperature inside the washing tank is the same as the method of displaying the water supply frequency by the flow meter, and thus description thereof will be omitted.

Referring to FIG. 6, a method of displaying a water supply frequency by a pressure switch includes: detecting a pressure at a pressure switch (ST210), converting the detected pressure from a micom to a frequency (ST220), and the micom In step S230, the frequency is classified into tens digits and the first digit less than or equal to the decimal point, and the tens two digits are displayed on the first and second segments (ST230). In operation ST240, if the predetermined time has elapsed, the method may include displaying the first decimal place number on the second segment (ST250).

By performing the above steps, even when the water supply frequency measured by the flow meter or the pressure switch is two or more digits or a number with a decimal point, it can be easily displayed using 88 segments.

By the display unit consisting of 88 segments by the water supply frequency and temperature display device of the dishwasher according to the present invention having the above configuration has a three-digit water supply frequency or wash water temperature can be displayed.

In addition, by using the display unit composed of 88 segments instead of 1888 segments or 888 segments, manufacturing cost is reduced.

1 and 2 are cross-sectional views schematically showing a dishwasher equipped with a water supply frequency and a temperature display device according to the spirit of the present invention.

3 and 4 is a block diagram of a water supply frequency display device of the dishwasher according to the spirit of the present invention.

5 and 6 is a flowchart showing a water supply frequency display method of the dishwasher according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: dishwasher 110: tub 111: door

120: upper rack 130: lower rack 140: water guide

150: upper nozzle 160: lower nozzle 170: sump

180: washing pump 190: motor 200: air brake

210: water supply hose connector 220: water supply flow path 300: flow meter

310: impeller 320: magnet 400: Hall sensor

500: microcomputer 600: display unit 610: first segment

620: second segment

Claims (13)

A flow rate sensing device for sensing the flow rate of the washing water introduced into the sump; A temperature sensing device for sensing a temperature inside the washing tank; A microcomputer to convert a signal transmitted from the flow rate sensing device into a water supply frequency, and to transmit a temperature sensed by the temperature sensing device; And And a display unit consisting of a first segment and a second segment so that the water supply frequency and temperature converted by the microcomputer are displayed. The method of claim 1, The flow rate sensing device includes an impeller rotating by the incoming washing water; A flow meter including a magnet attached to one side of the central axis of the impeller to generate a magnetic field; And And a Hall sensor attached to an external side of the flowmeter to sense a magnetic field of the magnet to generate a pulse. The method of claim 1, The flow rate detection device is attached to one side of the sump bottom, water supply frequency and temperature display device of the dishwasher including a pressure switch for measuring the head pressure in the washing tank. Generating a pulse from the hall sensor; Delivering the pulse to a microcomputer; Converting the pulse to a water supply frequency at a microcomputer; And displaying the water supply frequency on a display unit consisting of first and second segments. The method of claim 4, wherein And displaying the water supply frequency on the display unit further includes determining whether the water supply frequency is a three-digit number. The method of claim 5, If the water supply frequency is a three digit number, a hundred unit number is displayed in the second segment, If the water supply frequency is less than three digits number is set to a hundred unit number is set to 0 and displayed on the second segment water supply frequency display method of the dishwasher. The method of claim 6, Determining whether the hundreds number is displayed in a second segment and whether a predetermined time has elapsed; And if the predetermined time has elapsed, the step number is displayed simultaneously in the first segment and the step number in the second segment. Sensing pressure from the pressure switch; The pressure is transmitted to a microcomputer and converted into a frequency; And transmitting the frequency from the micom to a display unit consisting of first and second segments, and displaying the water supply frequency of the dishwasher. The method of claim 8, Wherein the frequency is displayed on the display unit 10-digit number of the frequency is displayed in the first segment, the single unit number is displayed on the second segment at the same time further comprising the water supply frequency display method of the dishwasher. The method of claim 9, The step of displaying the tens and singles units of the frequency on the display unit may include determining whether a predetermined time has elapsed; And after the predetermined time has elapsed, the first decimal place of the decimal point is displayed on the second segment of the display unit. Sensing a temperature inside the cleaning tank from the temperature sensor; Transmitting the sensed temperature to a microcomputer; The temperature transmitted to the micom is connected to the micom, and the step of displaying on the display unit consisting of the first segment and the second segment; Temperature display method of a dishwasher comprising a. The method of claim 11,  When the temperature inside the washing tank is displayed on the display unit Determining whether the temperature is three digits; If the temperature is three digits, a hundred digit number is displayed on the second segment; Determining whether the hundreds number is displayed in the second segment and whether a predetermined time has elapsed; And displaying the tens number on the first segment and the singles number on the second segment at the same time after the predetermined time elapses. The method of claim 12, The step of determining whether the temperature is a three digit number If the temperature is less than three digits, the temperature display method of the dishwasher further comprises the step of setting the number of hundred units to zero.