KR101635009B1 - SMPS circuit for water purifier - Google Patents
SMPS circuit for water purifier Download PDFInfo
- Publication number
- KR101635009B1 KR101635009B1 KR1020150154144A KR20150154144A KR101635009B1 KR 101635009 B1 KR101635009 B1 KR 101635009B1 KR 1020150154144 A KR1020150154144 A KR 1020150154144A KR 20150154144 A KR20150154144 A KR 20150154144A KR 101635009 B1 KR101635009 B1 KR 101635009B1
- Authority
- KR
- South Korea
- Prior art keywords
- unit
- power
- driving
- transformer
- cold water
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 238000009499 grossing Methods 0.000 claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000008213 purified water Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004397 blinking Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 235000020004 porter Nutrition 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/285—Single converters with a plurality of output stages connected in parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/18—Heating or cooling the filters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
The present invention relates to an SMPS circuit for a water purifier that supplies driving power to a water purifier, and more particularly, to a water purifier for a water purifier that adjusts the intensity of driving power applied to a thermoelectric element to provide cool water of better quality, The present invention relates to an SMPS circuit for a water purifier having a secondary auxiliary power unit for reducing the manufacturing cost by using a power source induced in the transformer without using a separate regulator as a power source and stably driving the cold water driving unit as a variable load.
The water purifier is a device that removes foreign substances contained in raw water such as tap water (drinking water) and supplies purified water. There are natural filtration type, direct filtration type, ion exchange water type, and reverse osmosis type according to the purification method .
A cold / warm water purifier capable of adopting one of these various integer methods can usually supply hot water and cold water.
The water purifier uses the heater to heat the purified water in the hot water tank and cool the purified water in the cold water tank by using the cooler.
As a conventional technology related to a water purifier, Patent Document 10-0645107 entitled " Method and Apparatus for Temperature Control of Hot & Cold Water Purifier "and Patent Document 10-1146398 entitled " Cold Water Purifier and Control Method"
As a method of keeping the temperature of the cold water constant in the water purifier according to the related art, a method of setting a reference upper limit temperature and a method of setting a reference lower limit temperature and a reference upper limit temperature are used.
When the temperature of the cold water in the cooling tank becomes higher than the upper limit temperature, the cooler is stopped for a certain period by using the timer.
This method suffers from the problem that when the set time of the timer is long, the cold water is overcooled and unnecessary power is consumed. If the set time of the timer is short, the cold water is not cool and the cooler is frequently operated / stopped.
In the latter method, the cooler is started when the cold water temperature in the cooling tank becomes higher than the reference upper limit temperature, and the cooler is stopped when the cold water temperature is lower than the reference lower limit temperature.
It is preferable that the temperature of the cold water supplied by the water purifier is kept constant in order for the consumer to receive the high quality cold water. That is, the smaller the difference between the maximum temperature and the minimum temperature of the cold water provided by the water purifier, the more preferable.
When the difference between the reference lower limit temperature and the reference upper limit temperature is set to a large value, there is a problem that the cold water is supplied to the consumer at different temperatures depending on the use time. When the difference between the reference lower limit temperature and the reference upper limit temperature is set small, (High-quality cold water having a small temperature difference) can be provided. However, there is a problem that the cooler frequently operates / stops, shortening the lifespan of the cooler, and significantly increasing power consumption of the cooler and the like.
The present invention is conceived to solve the problems of the water purifier according to the prior art. The present invention has been made to solve the problems of the conventional water purifier, and it is an object of the present invention to provide a water purifier which is capable of providing cold water of a constant temperature, And it is an object of the present invention to provide an SMPS circuit for a water purifier that can be stably driven without using a separate regulator, thereby reducing manufacturing cost.
To this end, the SMPS circuit for a water purifier according to the present invention comprises:
A hot water drive unit for applying driving power to the hot water storage heater;
A first transformer, a first switching device for switching the input power to the first transformer, a first PWM device for controlling the switching of the first switching device, a second PWM device for smoothing the output power of the first transformer, A valve driving unit including a first smoothing unit for applying a first smoothing unit;
A second switching unit for switching the input power to the second transformer, a second PWM unit for controlling the switching of the second switching unit, a second PWM unit for smoothing the output power of the second transformer, A cold water driving unit including a second smoothing unit for applying power;
And a CPU for controlling the intensity of the driving power outputted from the cold water driving unit so that the temperature of the cold water is kept constant.
And a rectifying unit for rectifying external power and supplying the external power to the cold water driving unit and the valve driving unit, respectively,
The first PWM unit and the second PWM unit respectively use the output power of the rectifying unit as an initial start power,
The valve driving unit may further include a first auxiliary power unit for supplying driving power to the first PWM unit using a power source magnetically coupled to the first transformer,
Wherein the cold water driving unit includes a second auxiliary power unit for supplying driving power to the second PWM unit using a power source electri- cally coupled to the second transformer, And a secondary auxiliary power supply unit for supplying driving power to the second PWM unit using a power source induced in the auxiliary power unit,
The secondary auxiliary power unit
A diode D16 for rectifying the power output from the first auxiliary coil of the first auxiliary power unit,
A capacitor C51 for smoothing the power rectified by the diode D16,
A first transistor (Q4) turned on when the power supplied to the second auxiliary coil of the second auxiliary power unit is less than a reference value,
And a second transistor Q1 for turning on the first transistor Q4 when the first transistor Q4 is turned on so that the power of the capacitor C51 is applied to the second PWM unit.
And an electrostatic charge sensing unit for sensing a frequency of the external power source and whether the external power source is cut off by using a photocoupler,
And a capacitor for removing high frequency noise is connected to the light emitting element of the photocoupler in parallel.
The SMPS circuit for a water purifier according to the present invention configured as described above is provided with a cold water drive unit of a variable load that outputs a driving power of an intensity according to the temperature of cold water to provide the cold water of good quality,
In addition, a separate regulator is not used to supply the driving power to the second PWM section of the cold water drive section, and the manufacturing cost is lowered by using a power source induced in the transformer of the cold water drive section. The problem that the driving power becomes unstable due to the variable load, This is an SMPS circuit for a water purifier that is stabilized by using a power source induced in a transformer of a driving part, and is an extremely useful invention for industrial power generation.
1 is a schematic block diagram of an SMPS circuit for a water purifier according to the present invention;
2 is a circuit diagram of an electrostatic sensing unit in a SMPS circuit for a water purifier according to the present invention.
3A and 3B are circuit diagrams of a valve driving unit in a SMPS circuit for a water purifier according to the present invention.
4A and 4B are circuit diagrams of a cold water driving unit in an SMPS circuit for a water purifier according to the present invention.
Hereinafter, the present invention will be described in more detail with reference to the drawings.
While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.
In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.
1, the SMPS circuit for a water purifier according to the present invention includes a hot
The hot
The hot
The
The rectifying unit (3) rectifies the external power having passed through the filter. A bridge diode (BD1) for full-wave rectifying an input AC power is used as the rectifying unit (3).
The
The electrostatic detecting
Referring to FIG. 2, the electrostatic
The photocouplers (PC8: A and PC8: B) include a light emitting device (PC8: A) for emitting commercial power and a light receiving device (PC8: B).
The capacitor C81 is connected in parallel to the light emitting device PC8 A to remove high frequency noise included in the commercial power supply to stably operate the light emitting device and the light receiving device PC8: And the resistor R84 and the capacitor C82 are connected in series and in parallel to each other to perform a stable operation.
When the commercial power is inputted, the light emitting element PC8: A flickers according to the frequency, and the light receiving element PC8: B receives the flickering signal of the light emitting element PC8: A and transmits it to the
The water purifier supplies the purified water when the water level of the hot water tank and the cold water tank becomes low, the opening / closing valve that blocks the water supply when the water level becomes high, the lamp that indicates the operation of the heater and the thermoelectric element, Respectively. These are fixed loads that receive a constant voltage (or constant current) as the driving power.
Also, the thermoelectric element (Peltier) for cooling the purified water of the cold water tank is also a fixed load to which a constant voltage (or a constant current) is applied as a driving power source. However, in the present invention, It is a variable load which depends on it.
That is, in the present invention, when the water level is lowered in the cold water tank and the new water is supplied to increase the temperature of the cold water, the driving power of strong intensity is applied to the thermoelectric element so that the cold water of the cold water tank quickly reaches the set temperature, The temperature of the cold water is maintained at the predetermined temperature by reducing the intensity of the driving power to which the thermoelectric element is applied.
The present invention includes a
The
As shown in FIGS. 3A and 3B, the valve-
A first transformer T1, a first switching device Q3 for switching an input power to the first transformer T1, a first PWM device U6 for controlling switching of the first switching device Q3, A
The first switching device Q3 switches the output power of the rectifying part 3 (BD1) to supply the switched power to the primary side of the transformer T1,
The
The first PWM unit U6 receives the output voltage of the first transformer T1 sensed by the photocoupler PC2: A and PC2: B to control the switching of the first switching device Q3, And the
A direct drive power source is required as the first PWM unit U6. A separate regulator may be used to supply the driving power to the first PWM unit U6, but if a separate regulator is used, the manufacturing cost is greatly increased. Therefore, in the present invention, the first auxiliary
The first PWM unit U6 can drive the first
The first auxiliary
As shown in FIGS. 4A and 4B, the cold water-
A second transformer T2, a second switching device Q1 for switching the input power to the second transformer T2, a second PWM device U5 for controlling the switching of the second switching device Q1, A
The second switching device Q2 switches the output power B + of the rectifying
The
The second PWM unit U5 receives the output voltage of the second transformer T2 sensed by the photocouplers PC3: A and PC3: B to control the switching of the second switching device Q2, And the
Also, the second PWM unit U5 does not use a separate regulator, and the second auxiliary
The second PWM unit U5 can drive the second
The second auxiliary
In the cold
The second auxiliary
The secondary auxiliary
The second PWM unit U5 is driven by using the output power B + of the rectifying unit 3 (BD1) as an initial start power in the initial stage when the external power is turned on and then the second power T2 is supplied with power The second auxiliary
The
The
When the control signal of the
The second comparator U2: B outputs a voltage having an intensity proportional to the difference between the two voltages input to the inverting terminal and the non-inverting terminal to the photocoupler (PC3: A, PC3: B) (U5) outputs the driving power of the intensity corresponding thereto.
When the inverting terminal of the second comparator U2: B receives a voltage of a certain range (for example, 0V to 2.5V) from the
More specifically, if there is no control signal input to the inverting terminal of the second comparator U2 (B) (that is, when 0 V is input), it is recognized as an OPEN state (the resistance (impedance) of the inverting terminal is recognized as 0 A capacitor C3 is connected to the first comparator U2 so that the control signal input to the inverting terminal is transmitted to the second comparator U2: B, The charging voltage is quickly changed and reacted through the resistor R1 so that the control signal of the
The regulator generates a constant voltage by stepping down the output power of the
While the present invention has been described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, Should be interpreted as belonging to.
1: hot water driving part 3: rectifying part
5: valve driving part 6: cold water driving part
Claims (4)
A first transformer, a first switching device for switching the input power to the first transformer, a first PWM device for controlling the switching of the first switching device, a second PWM device for smoothing the output power of the first transformer, A valve driving unit including a first smoothing unit for applying a first smoothing unit;
A second switching unit for switching the input power to the second transformer, a second PWM unit for controlling the switching of the second switching unit, a second PWM unit for smoothing the output power of the second transformer, A cold water driving unit including a second smoothing unit for applying power;
A CPU for controlling the intensity of the driving power outputted from the cold water driving unit so that the temperature of the cold water is kept constant;
And a rectifying unit for rectifying external power and supplying the external power to the cold water driving unit and the valve driving unit,
The first PWM unit and the second PWM unit respectively use the output power of the rectifying unit as an initial start power,
The valve driving unit may further include a first auxiliary power unit for supplying driving power to the first PWM unit using a power source magnetically coupled to the first transformer,
Wherein the cold water driving unit includes a second auxiliary power unit for supplying driving power to the second PWM unit using a power source electri- cally coupled to the second transformer, Further comprising a secondary auxiliary power unit for supplying driving power to the second PWM unit using a power source induced in the auxiliary power unit.
The secondary auxiliary power unit
A diode D16 for rectifying the power output from the first auxiliary coil of the first auxiliary power unit,
A capacitor C51 for smoothing the power rectified by the diode D16,
A first transistor (Q4) turned on when the power supplied to the second auxiliary coil of the second auxiliary power unit is less than a reference value,
And a second transistor (Q1) for turning on the first transistor (Q4) when the first transistor (Q4) is turned on so that the power of the capacitor (C51) is applied to the second PWM unit.
And an electrostatic charge sensing unit for sensing a frequency of the external power source and whether the external power source is cut off by using a photocoupler,
And a capacitor for removing high frequency noise is connected in parallel to the light emitting element of the photocoupler.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150154144A KR101635009B1 (en) | 2015-11-03 | 2015-11-03 | SMPS circuit for water purifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150154144A KR101635009B1 (en) | 2015-11-03 | 2015-11-03 | SMPS circuit for water purifier |
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KR101635009B1 true KR101635009B1 (en) | 2016-07-08 |
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KR1020150154144A KR101635009B1 (en) | 2015-11-03 | 2015-11-03 | SMPS circuit for water purifier |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980086004A (en) * | 1997-05-30 | 1998-12-05 | 윤종용 | Water supply unit power supply |
KR20000008739A (en) * | 1998-07-15 | 2000-02-15 | 배동만 | Switching type power supply unit |
JP2000188865A (en) * | 1998-12-24 | 2000-07-04 | Nec Home Electronics Ltd | Power supply device |
KR20150000754A (en) * | 2013-06-25 | 2015-01-05 | 엘지전자 주식회사 | A switching mode power supply driving thermoelectric module and water purifier including the switching mode power supply |
-
2015
- 2015-11-03 KR KR1020150154144A patent/KR101635009B1/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19980086004A (en) * | 1997-05-30 | 1998-12-05 | 윤종용 | Water supply unit power supply |
KR20000008739A (en) * | 1998-07-15 | 2000-02-15 | 배동만 | Switching type power supply unit |
JP2000188865A (en) * | 1998-12-24 | 2000-07-04 | Nec Home Electronics Ltd | Power supply device |
KR20150000754A (en) * | 2013-06-25 | 2015-01-05 | 엘지전자 주식회사 | A switching mode power supply driving thermoelectric module and water purifier including the switching mode power supply |
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