KR101897574B1 - Apparatus and method for supplying hot water and water purifier having the same - Google Patents

Apparatus and method for supplying hot water and water purifier having the same Download PDF

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Publication number
KR101897574B1
KR101897574B1 KR1020150071840A KR20150071840A KR101897574B1 KR 101897574 B1 KR101897574 B1 KR 101897574B1 KR 1020150071840 A KR1020150071840 A KR 1020150071840A KR 20150071840 A KR20150071840 A KR 20150071840A KR 101897574 B1 KR101897574 B1 KR 101897574B1
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KR
South Korea
Prior art keywords
temperature
heater
opening
control valve
closing
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KR1020150071840A
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Korean (ko)
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KR20160137832A (en
Inventor
이영재
김재훈
정진규
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코웨이 주식회사
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Priority to KR1020150071840A priority Critical patent/KR101897574B1/en
Priority to PCT/KR2016/004553 priority patent/WO2016186343A1/en
Priority to US15/575,742 priority patent/US10604399B2/en
Priority to CN201610334917.4A priority patent/CN106168816B/en
Publication of KR20160137832A publication Critical patent/KR20160137832A/en
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Publication of KR101897574B1 publication Critical patent/KR101897574B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/0022—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes provided with heating arrangements
    • 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
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D3/0058—Details

Abstract

A hot water supply method according to an embodiment of the present invention includes a hot water supply device including a first heater disposed in a water inlet portion, a second heater disposed in the water outlet portion, and a flow rate control valve for controlling a flow rate of water discharged to the water outlet portion Measuring the temperature of the water introduced into the water inlet, turning on the first heater and the second heater when the target temperature is equal to or higher than the reference temperature, comparing the temperature of the water introduced into the water inlet with the target temperature Closing degree of the flow rate control valve based on a difference between a temperature of the water discharged to the water outlet and the target temperature, Lt; / RTI >

Description

TECHNICAL FIELD The present invention relates to a hot water supply method, a hot water supply apparatus, and a water purifier using the hot water supply apparatus,

The present invention relates to a hot water supply method, a hot water supply apparatus, and a water purifier using the same.

Recently, a direct water type water purifier that provides hot water using an instantaneous hot water heater has been actively studied.

A direct current type water purifier that provides hot water using a plurality of conventional heating elements adjusts the temperature of hot water by adjusting electric power supplied to a plurality of heating elements while fixing the extraction flow rate, The temperature of hot water was controlled by adjusting the flow rate.

However, a method of controlling power supplied to a plurality of or high-capacity heating elements may cause EMI (Electro Magnetic Interference), and harmonics and flickers may occur, resulting in only a narrow range of temperature control In both methods, water passing through the hot water supply device must be discharged through the drain until the hot water of the target temperature is generated. Therefore, there is a problem that a waiting time for generating the hot water of the target temperature is required.

The following Patent Document 1 relates to a hot water supply device and a water purifier using the hot water supply device, but does not provide a solution to the above-mentioned problem.

Korean Patent Laid-Open No. 10-2014-0057420

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a method and apparatus for heating water using only a first heater when a target temperature is lower than a reference temperature, The heating capacity and the flow rate of the second heater are controlled according to the temperature of the water flowing into the inlet section and the temperature of the second heater is controlled according to the temperature of the water discharged to the outlet section, By regulating the flow rate, EMI (Electro Magnetic Interference), harmonics and flicker are not generated, the temperature range of hot water that can be generated can be widened, and water can be heated and supplied to the target temperature without waiting time A hot water supply method, and a water purifier using the same.

The hot water supply method according to an embodiment of the present invention uses a hot water supply device including a first heater, a second heater, and a flow rate control valve that adjusts a flow rate of water discharged to the water outlet, Measuring the temperature of the water flowing into the water inlet portion and adjusting the opening and closing degree of the flow rate control valve based on a difference between the temperature of the water flowing into the water inlet portion and the target temperature when the target temperature is lower than the first reference temperature Calculating a heating capacity of the first heater and the second heater on the basis of a difference between the temperature of the water introduced into the inlet and the target temperature, and calculating the heating capacity of the first heater and the second heater by the calculated heating capacity, A step of measuring a temperature of water discharged to the water outlet portion, a step of measuring a temperature of water discharged to the water outlet portion, And regulating the degree of opening and closing of the flow control valve.

In one embodiment, the step of re-adjusting the heating capacity of the second heater based on the difference between the temperature of the water discharged to the water outlet and the target temperature after the step of re-adjusting the opening and closing degree of the flow control valve .

In one embodiment, the step of adjusting the opening / closing degree of the flow rate control valve may reduce the opening / closing degree of the flow rate control valve in proportion to the difference between the temperature of the water flowing into the inlet part and the target temperature.

In one embodiment, the step of adjusting the opening / closing degree of the flow control valve may include using a first look-up table for the opening / closing degree of the flow control valve according to the difference between the temperature of the water flowing into the inlet / The degree of opening / closing of the flow control valve can be adjusted.

In one embodiment, the step of calculating the heating capacities of the first heater and the second heater may set the heating capacity of the first heater to the maximum heating capacity when the target temperature is equal to or higher than the second reference temperature, The heating capacity of the second heater can be calculated by using the heating capacity of the first heater, the opening and closing degree of the flow control valve, and the difference between the temperature of the water introduced into the inlet and the target temperature.

In one embodiment, the step of calculating the heating capacities of the first heater and the second heater may set the heating capacity of the first heater to be 0 when the target temperature is lower than the second reference temperature, The heating capacity of the heater can be calculated by using the opening / closing degree of the flow rate control valve and the difference between the temperature of the water introduced into the water inlet and the target temperature.

In one embodiment, the step of calculating the heating capacities of the first heater and the second heater may include calculating the heating capacity of the first heater and the second heater based on the degree of opening and closing of the flow control valve and the difference between the temperature of the water flowing into the inlet- And a second lookup table for the heating capacity of the second heater.

In one embodiment, when the target temperature is equal to or higher than the first reference temperature, between the step of measuring the temperature of the water introduced into the water inlet and the step of measuring the temperature of the water discharged to the water outlet, Controlling the opening and closing degree of the flow rate control valve based on a difference between the target temperature and the target temperature, and driving the first heater and the second heater with a maximum heating capacity.

In one embodiment, the step of adjusting the opening and closing degree of the flow control valve may reduce the opening and closing degree of the flow control valve in proportion to the difference between the temperature of the water flowing into the inlet and the target temperature.

In one embodiment, the step of adjusting the opening / closing degree of the flow control valve may include using a first look-up table for the opening / closing degree of the flow control valve according to the difference between the temperature of the water flowing into the inlet / The degree of opening / closing of the flow control valve can be adjusted.

In one embodiment, the step of re-adjusting the opening / closing degree of the flow control valve may reduce the opening / closing degree of the flow control valve in proportion to the difference between the temperature of the water discharged to the water outlet and the target temperature.

In one embodiment, the step of re-adjusting the opening / closing degree of the flow control valve may include a third look-up table for the opening / closing degree of the flow control valve according to the difference between the temperature of the water discharged to the water outlet and the target temperature The degree of opening / closing of the flow rate control valve can be adjusted.

A hot water supply apparatus according to an embodiment of the present invention includes a first heater and a second heater disposed between a water inlet and an outlet, a first temperature sensor for measuring a temperature of water flowing into the water inlet, A second temperature sensor for measuring the temperature of water discharged to the outflow section to generate second temperature information, a flow control valve for controlling a flow rate of water discharged to the outflow section, and a second temperature sensor for controlling the temperature of the first heater or the second Controlling a degree of opening / closing of the flow rate control valve based on a difference between a first temperature corresponding to the first temperature information and the target temperature, and controlling a second temperature corresponding to the second temperature information and a second temperature corresponding to the second temperature information, And controlling the opening / closing degree of the flow control valve based on a difference value between the target temperature and the target temperature.

In one embodiment, the control unit may readjust the heating capacity of the second heater based on a difference between the second temperature and the target temperature.

In one embodiment, the control unit may calculate the heating capacity of the first heater and the second heater based on the degree of opening and closing of the flow control valve and the difference between the first temperature and the target temperature, And the first heater and the second heater can be driven by the calculated heating capacity.

In one embodiment, when the target temperature is equal to or higher than the first reference temperature, the controller may drive the first heater and the second heater at a maximum heating capacity.

In one embodiment, the controller may drive the first heater to a maximum heating capacity when the target temperature is less than the first reference temperature and is equal to or higher than a second reference temperature, and the heating capacity, The heating capacity of the second heater can be calculated using the opening and closing degree of the flow control valve and the difference between the target temperature and the first temperature and the second heater can be driven by the calculated heating capacity .

In one embodiment, the control unit may turn off the first heater when the target temperature is lower than the second reference temperature, and change the opening / closing degree of the flow control valve and the target temperature to the first temperature The heating capacity of the second heater can be calculated using the difference value, and the second heater can be driven by the calculated heating capacity.

In one embodiment, the control unit uses a second lookup table for the heating capacity of the first heater and the second heater according to the degree of opening and closing of the flow control valve and the difference between the first temperature and the target temperature The heating capacity of the first heater and the heating capacity of the second heater can be calculated.

In one embodiment, the control unit may reduce the opening / closing degree of the flow control valve in proportion to a difference between the first temperature and the target temperature.

In one embodiment, the control unit may adjust the opening / closing degree of the flow control valve by using a first look-up table for the opening / closing degree of the flow control valve according to a difference value between the first temperature and the target temperature have.

In one embodiment, the control unit may reduce the opening / closing degree of the flow control valve in proportion to the difference between the second temperature and the target temperature.

In one embodiment, the control unit may adjust the opening and closing degree of the flow control valve by using a third look-up table for the degree of opening and closing of the flow control valve according to a difference value between the second temperature and the target temperature have.

In one embodiment, the control unit calculates an opening / closing degree of the flow rate control valve based on a difference between the first temperature and the target temperature, and calculates an opening / closing degree of the flow rate control valve, 1) calculating a heating capacity of the first heater and the second heater based on a difference between the first temperature and the target temperature, and calculating a heating capacity of the first heater and the second heater based on a difference between the second temperature and the target temperature, A heater controller for driving the first heater and the second heater according to the calculated heating capacity, and a controller for controlling the flow rate control valve according to the calculated degree of opening and closing A flow control valve controller.

According to an embodiment of the present invention, there may be a water purifier including the hot water supply device.

According to an aspect of the present invention, there is provided a method for controlling a temperature of a water discharged from a discharge unit, the method comprising: heating the water using only the first heater when the target temperature is lower than the reference temperature, And controls the flow rate and the heating capacity according to the temperature of the water to be supplied. When the target temperature is equal to or higher than the reference temperature, the water is heated using the first heater and the second heater, EMI (Electro Magnetic Interference), harmonics and flicker are not generated by regulating the heating capacity and the flow rate and by regulating the flow rate according to the temperature of the water discharged to the discharge portion, the temperature range of the hot water that can be generated is wider And the water can be heated and supplied to the target temperature without waiting time.

FIG. 1 is a block diagram illustrating a hot water supply apparatus according to an embodiment of the present invention. Referring to FIG.
FIG. 2 is a block diagram for explaining an embodiment of the control unit in FIG.
3 is a flowchart illustrating a hot water supply method according to an embodiment of the present invention.
Fig. 4 is a flowchart for explaining an embodiment of calculating the heating capacities of the first heater and the second heater in Fig. 3;

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

In the drawings referred to in the present invention, elements having substantially the same configuration and function will be denoted by the same reference numerals, and the shapes and sizes of the elements and the like in the drawings may be exaggerated for clarity.

FIG. 1 is a block diagram illustrating a hot water supply apparatus according to an embodiment of the present invention. Referring to FIG.

Referring to FIG. 1, a hot water supply device according to an embodiment of the present invention includes a first heater 100, a second heater 200, a first temperature sensor 300, a second temperature sensor 400, A valve 500, and a control unit 600.

Here, the hot water supply device can heat the water supplied from the outside in advance or heat it to a target temperature inputted from the user, and is capable of discharging the water from the outside through the inlet (not shown) (Not shown).

The first heater 100 may be disposed between the water inlet and the water outlet, and may heat the water flowing into the water inlet. The heating capacity of the first heater 100 can be adjusted by the controller 600. In one embodiment, the heating capacity of the first heater 100 controlled by the control unit 600 may be zero or the maximum heating capacity. That is, the first heater 100 may be turned on (turned on by the maximum heating capacity) or turned off (when the heating capacity is zero) by the controller 600.

The second heater 200 may be disposed between the water inlet and the water outlet, and may heat water flowing into the water inlet. The heating capacity of the second heater 200 can be adjusted by the controller 600. Here, the heating capacity of the second heater 200 can be adjusted to a value of 0 to 100% of the maximum heating capacity, and the value can be adjusted by adjusting the power value supplied to the second heater 200.

In one embodiment, the heating capacity of the second heater 200 may be controlled using a phase control method or a zero-crossing method, and only a part of the voltage waveform of the power source applied to the second heater 200 may be selectively input The heating capacity of the second heater 200 can be adjusted.

In one embodiment, the first heater 100 may be a heating element capable of ON / OFF control only, and the second heater 200 may be configured in a manner capable of adjusting the heating capacity. In this way, the first heater 100 can heat the water flowing into the inlet portion with the heating capacity set by the ON / OFF control by the controller 600, and the second heater 200 can be heated by the controller 600 By heating the water discharged to the outflow section with the heating capacity adjusted according to the difference between the temperature of the water flowing into the inlet section and the target temperature, electromagnetic interference (EMI) or harmonics that may occur when controlling a plurality of heaters or a high- I can solve the problem.

The first temperature sensor 300 may generate the first temperature information by measuring the temperature of the water flowing into the water inlet. The first temperature sensor 300 may output the first temperature information to the controller 600.

The second temperature sensor 400 may generate the second temperature information by measuring the temperature of water discharged through the water outlet. The second temperature sensor 400 may output the second temperature information to the controller 600.

Here, the first temperature sensor 300 and the second temperature sensor 400 may be any well-known sensors as long as they can measure temperature of water and generate temperature information corresponding to the temperature of the water.

The flow control valve 500 can control the flow rate of the water discharged through the outlet portion under the control of the controller 600. In one embodiment, the flow control valve 500 controls a degree of opening and closing of the valve in accordance with a control signal input from the control unit 600 and a valve (not shown) installed to adjust the flow rate of water discharged through the water outlet, And a motor (not shown). The degree of opening / closing corresponds to the flow rate of water discharged through the water outlet, and may be proportional to the flow rate value, and may mean the opening / closing of the valve or the opened / closed area.

The controller 600 can control the overall operation of the hot water supply device. Specifically, the controller 600 may receive the first temperature information and the second temperature information from the first temperature sensor 300 and the second temperature sensor 400. In addition, the controller 600 controls the opening / closing degree of the flow control valve 500 using the first temperature information. The control unit 600 may calculate the heating capacities of the first heater 100 and the second heater 200 and may drive the first heater 100 and the second heater 200 with the calculated heating capacity, . Also, the controller 600 may re-adjust the opening / closing degree of the flow control valve 500 using the second temperature information. In one embodiment, the controller 600 may re-adjust the heating capacity of the second heater 200 using the second temperature information.

Specifically, when the controller 600 is the water inlet portion to obtain, first of all, measure the water temperature (T 1) inlet portion wherein the retrieving and, or input by the user, or the flow rate adjusted to the preset target temperature (T t) The degree of opening and closing of the valve 500 can be adjusted.

In one embodiment, the control unit 600 may adjust the opening / closing degree of the flow control valve 500 according to the difference between the target temperature T t and the temperature T 1 of the water introduced into the inlet portion, The degree of opening and closing of the flow control valve 500 can be reduced.

In another embodiment, the control unit 600 determines whether the flow control valve 500 is opened or closed according to the difference between the temperature T 1 of the water flowing into the water inlet and the target temperature T t , The opening and closing degree of the flow control valve 500 can be adjusted by using the table.

The control unit 500 calculates the heating capacities of the first heater 100 and the second heater 200 according to the magnitude of the target temperature T t and calculates the heating capacities of the first heater 100 and the second heater 200 using the calculated heating capacities, And the second heater 200 can be driven.

More specifically, the control unit 600 sets the heating capacities of the first heater 100 and the second heater 200 to the maximum when the target temperature T t is equal to or greater than the first reference temperature T s1 So that the first heater 100 and the second heater 200 can be driven.

Here, when the target temperature T t is less than the first reference temperature T s1 and is equal to or greater than the second reference temperature T s2 , the controller 600 controls the heating capacity of the first heater 100 to be maximized And the heating capacity of the second heater 200 is set so that the heating capacity of the first heater 100 and the degree of opening and closing of the flow control valve 500 and the temperature T 1 and the target temperature T t of the water flowing into the inlet / Can be calculated using the difference of

Here, when the target temperature T t is less than the second reference temperature T s2 , the control unit 600 sets the heating capacity of the first heater 100 to zero and the heating of the second heater 200 The capacity can be calculated by using the opening / closing degree of the flow control valve 500 and the difference between the temperature T 1 of the water flowing into the inlet and the target temperature T t .

The control unit 600 controls the first heater 100 and the second heater 100 according to the opening and closing degree of the flow control valve 500 and the difference between the temperature T 1 and the target temperature T t of the water flowing into the inlet / The heating capacity of the first heater 100 and the heating capacity of the second heater 200 can be calculated using the second look-up table with respect to the heating capacity of the heater 200.

In one embodiment, the controller 600 may set the heating capacity of the first heater 100 to zero or the maximum heating capacity, which may be a simple ON / OFF control. That is, the first heater 100 may be a heater that is turned on or off with a maximum heating capacity, and the controller 600 determines whether the target temperature T t is greater than a first reference temperature T s1 ) and is equal to or higher than the second reference temperature T s2 , the first heater 100 is turned on and the water is heated to the target temperature second can be used to calculate the heat capacity of the heater 200, it is possible to drive the second heater 200 as the heating capacity by the calculated target temperature (T t) size is the second reference temperature for heating to (T s2 ), the heating capacity of the second heater 200 for heating the water to the target temperature is calculated using only the second heater 200 in a state where the first heater 100 is turned off And the second heater 200 can be driven by the calculated heating capacity.

Next, the control unit 600 can readjust the opening / closing degree of the flow control valve 500 based on the difference between the temperature T 2 of the water discharged to the discharge port and the target temperature T t .

In one embodiment, the controller 600 may reduce the opening / closing degree of the flow control valve 500 in proportion to the difference between the temperature T 2 of the water discharged to the water outlet and the target temperature T t .

In another embodiment, the controller 600 controls the third look-up table for the opening / closing degree of the flow control valve 500 according to the difference between the temperature T 2 of the water discharged to the water outlet and the target temperature T t The degree of opening / closing of the flow control valve 500 can be adjusted.

In one embodiment, the control unit 600 may include at least one processing unit and memory. The processing unit may include a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) And may have a plurality of cores. The memory may be volatile memory, non-volatile memory, or a combination thereof.

The control unit 600 will be described in more detail below with reference to FIG.

FIG. 2 is a block diagram for explaining an embodiment of the control unit in FIG.

2, the controller 600 may include a heater controller 610, a calculator 620, and a flow control valve controller 630 according to an exemplary embodiment of the present invention.

The heater controller 610 can drive the first heater 100 and the second heater 200 with the heating capacity calculated by the calculator 620. [

Here, the heater controller 610 may adjust the heating capacities of the first heater 100 and the second heater 200 by adjusting the magnitude of electric power supplied to the first heater 100 and the second heater 200 . In one embodiment, the heater controller 610 controls the ON / OFF operation of the first heater 100 according to the heating capacity calculated by the calculator 620 and controls the power supplied to the second heater 200 The heating capacity of the second heater 200 can be adjusted.

The calculator 620 can calculate the opening and closing degree of the flow control valve 500 and the heating capacity of the first heater 100 and the second heater 200. [

More specifically, the calculator 620 calculates the first temperature information (the temperature information of the water flowing into the water inlet portion) input from the first temperature sensor 300 and the second temperature information The degree of opening and closing of the flow control valve 500 can be calculated based on the difference between the first temperature T 1 and the target temperature T t corresponding to the first temperature information, And the degree of opening and closing of the flow control valve 500 and the degree of opening and closing of the second heater 200 can be calculated based on the difference between the second temperature T 2 and the target temperature T t corresponding to the second temperature information, Capacity can be redeemed.

Here, the calculator 620 can receive the first temperature information and the second temperature information from the first temperature sensor 300 and the second temperature sensor 400. Although not shown in the drawing, Can be provided.

The calculator 620 may compare the target temperature T t with the first reference temperature T s1 or the second reference temperature T s2 . The first reference temperature T s1 may be higher than the second reference temperature T s2 .

Here, the calculator 620 can set the heating capacities of the first heater 100 and the second heater 200 to the maximum when the target temperature T t is equal to or greater than the first reference temperature T s1 .

When the target temperature T t is less than the first reference temperature T s1 and the second reference temperature T s2 or more, the calculator 620 calculates the heating capacity of the first heater 100 as the maximum heating capacity Based on the heating capacity of the first heater 100 and the opening and closing degree of the flow control valve 500 and the difference between the first temperature T 1 and the target temperature T t , The heating capacity can be calculated.

When the target temperature T t is less than the second reference temperature T s2 , the calculator 620 sets the heating capacity of the first heater 100 to zero and the opening / closing degree of the flow control valve 500 And the difference between the first temperature T 1 and the target temperature T t , the heating capacity of the second heater 200 can be calculated.

The calculator 620 can provide the heating capacities of the first heater 100 and the second heater 200 to the heater controller 610 and calculate the opening and closing degree of the flow control valve 500 To the flow rate regulating valve controller (630).

The flow rate control valve controller 630 can control the opening and closing operations of the flow rate control valve 500 according to the degree of opening and closing calculated by the calculator 620.

According to an embodiment of the present invention, there may be a water purifier (not shown) provided with the hot water supply device including the hot water supply device of FIGS. 1 and 2 described above.

Hereinafter, a hot water supply method according to an embodiment of the present invention will be described with reference to FIG. However, since the hot water supply method described below is performed in the hot water supply apparatus described above with reference to FIGS. 1 and 2, the same or similar contents to those described above are not described redundantly.

3 is a flowchart illustrating a hot water supply method according to an embodiment of the present invention.

Referring to FIG. 3, the hot water supply method according to an embodiment of the present invention can generate the first temperature information by measuring the temperature of the water introduced into the inlet portion by the first temperature sensor 300 (S100). Here, the first temperature information may include a first temperature value T 1 .

Next, when the target temperature T t inputted from the outside is less than the first reference temperature T s1 (S200), the control unit 600 determines whether the target temperature T t and the first temperature T 1 The opening and closing degree of the flow control valve 500 can be adjusted based on the difference (S300).

In one embodiment, the control unit 600 may adjust the opening / closing degree of the flow control valve 500 according to the difference between the target temperature T t and the temperature T 1 of the water introduced into the inlet portion, The degree of opening and closing of the flow control valve 500 can be reduced.

In another embodiment, the control unit 600 determines whether the flow control valve 500 is opened or closed according to the difference between the temperature T 1 of the water flowing into the water inlet and the target temperature T t , The opening and closing degree of the flow control valve 500 can be adjusted by using the table.

Next, the control unit 600 can calculate the heating capacities of the first heater 100 and the second heater 200 based on the difference between the first temperature T 1 and the target temperature T t (S400 ).

Next, the control unit 600 can drive the first heater 100 and the second heater 200 with the calculated heating capacity (S500).

Next, the second temperature sensor 400 may generate the second temperature information by measuring the temperature of the water discharged to the water outlet (S600). Here, the second temperature information may include a second temperature value T 2 .

Next, when the second temperature value T 2 is different from the target temperature T t (S 700), the control unit 600 determines whether the second temperature value T 2 is different from the target temperature T t The degree of opening / closing of the flow control valve 500 can be readjusted (S800).

The control unit 600 controls the opening and closing of the flow control valve 500 such that the flow rate of the water discharged to the outflow unit decreases as the difference between the second temperature value T 2 and the target temperature T t increases, Up table of the degree of opening and closing of the flow control valve 500 according to the difference between the second temperature value T 2 and the target temperature T t , The degree of opening and closing of the opening can be adjusted again.

The step S800 of re-adjusting the opening and closing degree of the flow control valve 500 may be performed by changing the temperature of the water heated by the first heater 100 and the second heater 200 to the target temperature T 2 the temperature (t t) when a difference between the generated as for re-adjusting this, the flow rate control when exceeding the range that can be adjusted by adjusting the opening degree of the valve 500 (the second temperature value (t 2) and the target temperature If outside the temperature range, the difference is pre-set between (T t)), a second temperature value (T 2) by the controller 600 based on the difference between the target temperature (T t) is the heating of the second heater (200) The capacity can be regulated and the heating capacity of the second heater 200 can be readjusted to the calculated heating capacity.

In one embodiment, when the target temperature T t is equal to or greater than the first reference temperature T s1 , the step S100 of measuring the temperature T 1 of the water introduced into the water inlet and the temperature T 2 The control unit 600 controls the degree of opening and closing of the flow control valve 500 based on the difference between the temperature T 1 of the water flowing into the inlet portion and the target temperature T t , And driving the first heater 100 and the second heater 200 with the maximum heating capacity (S220).

Fig. 4 is a flowchart for explaining an embodiment of calculating the heating capacities of the first heater and the second heater in Fig. 3;

4, when the magnitude of the target temperature T t is equal to or greater than the second reference temperature T s2 (S410), the controller 600 sets the heating capacity of the first heater 100 to the maximum, 2 The heating capacity of the heater 200 is set such that the heating capacity of the first heater 100, the degree of opening and closing of the flow control valve 500, and the difference between the temperature T 1 of the water flowing into the inlet portion and the target temperature T t (S420).

If the magnitude of the target temperature T t is less than the second reference temperature T s2 in step S410, the controller 600 sets the heating capacity of the first heater 100 to zero and the second heater 200 The heating capacity of the flow control valve 500 can be calculated using the opening and closing degree of the flow control valve 500 and the difference between the temperature T 1 of the water flowing into the inlet and the target temperature T t .

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the particular forms disclosed. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: first heater
200: second heater
300: first temperature sensor
400: second temperature sensor
500: Flow control valve
600:
610: Heater controller
620: Calculator
630: Flow control valve controller

Claims (31)

A method for supplying hot water using a hot water supply device including a first heater, a second heater, and a flow rate control valve for adjusting a flow rate of water discharged to the water outlet,
Measuring the temperature of the water introduced into the inlet portion;
Adjusting a degree of opening and closing of the flow rate control valve based on a difference between a temperature of the water flowing into the inlet portion and the target temperature when the target temperature is lower than a first reference temperature;
Calculating a heating capacity of the first heater and the second heater based on a difference between the temperature of the water introduced into the inlet portion and the target temperature;
Driving the first heater and the second heater with the calculated heating capacity;
Measuring a temperature of water discharged to the water outlet; And
Adjusting the opening and closing degree of the flow control valve based on a difference between the temperature of the water discharged to the water outlet and the target temperature; Lt; / RTI >
The method as claimed in claim 1, wherein, after the step of re-adjusting the opening / closing degree of the flow control valve,
Further comprising the step of re-adjusting the heating capacity of the second heater based on the difference between the temperature of the water discharged to the water outlet and the target temperature.
The method as claimed in claim 1, wherein the step of adjusting the opening /
Wherein the degree of opening and closing of the flow control valve is reduced in proportion to the difference between the temperature of the water flowing into the inlet portion and the target temperature.
The method as claimed in claim 1, wherein the step of adjusting the opening /
Wherein the degree of opening / closing of the flow control valve is adjusted by using a first look-up table for the degree of opening and closing of the flow control valve according to a difference between a temperature of the water flowing into the inlet and a target temperature.
The method according to claim 1, wherein calculating the heating capacities of the first heater and the second heater comprises:
When the magnitude of the target temperature is less than the first reference temperature and is equal to or higher than the second reference temperature,
The heating capacity of the first heater is set to the maximum heating capacity,
Wherein the heating capacity of the second heater is calculated by using the heating capacity of the first heater, the opening and closing degree of the flow control valve, and the difference between the temperature of the water introduced into the inlet and the target temperature.
The method according to claim 1, wherein calculating the heating capacities of the first heater and the second heater comprises:
If the magnitude of the target temperature is less than the second reference temperature,
The heating capacity of the first heater is set to 0,
Wherein the heating capacity of the second heater is calculated by using the opening / closing degree of the flow rate control valve and the difference between the temperature of the water flowing into the inlet portion and the target temperature.
The method according to claim 1, wherein calculating the heating capacities of the first heater and the second heater comprises:
Up table of the heating capacity of the first heater and the second heater in accordance with the degree of opening and closing of the flow control valve and the difference between the temperature of the water introduced into the water inlet and the target temperature, .
The method according to claim 1,
When the target temperature is equal to or higher than the first reference temperature,
Between the step of measuring the temperature of the water introduced into the water inlet and the step of measuring the temperature of the water discharged to the water outlet,
Adjusting a degree of opening / closing of the flow rate control valve based on a difference between a temperature of the water flowing into the inlet portion and the target temperature; And
Driving the first heater and the second heater with a maximum heating capacity;
The hot water supply method further comprising:
9. The method of claim 8,
Wherein the step of adjusting the opening / closing degree of the flow control valve comprises:
Wherein the degree of opening and closing of the flow control valve is reduced in proportion to a difference between the temperature of the water flowing into the inlet portion and the target temperature.
9. The method of claim 8,
Wherein the step of adjusting the opening / closing degree of the flow control valve comprises:
Wherein the degree of opening / closing of the flow control valve is adjusted by using a first look-up table for the degree of opening and closing of the flow control valve according to a difference between a temperature of the water flowing into the inlet and a target temperature.
The method as claimed in claim 1, wherein the step of re-adjusting the opening /
Wherein the degree of opening and closing of the flow control valve is reduced in proportion to the difference between the temperature of the water discharged to the water outlet and the target temperature.
The method as claimed in claim 1, wherein the step of re-adjusting the opening /
Wherein the degree of opening and closing of the flow control valve is adjusted by using a third look-up table for the degree of opening and closing of the flow control valve according to the difference between the temperature of the water discharged to the water outlet and the target temperature.
A first heater and a second heater disposed between the water inlet and the water outlet;
A first temperature sensor for generating first temperature information by measuring a temperature of water flowing into the water inlet;
A second temperature sensor for generating second temperature information by measuring a temperature of water discharged to the water outlet;
A flow regulating valve for regulating a flow rate of water discharged to the water outlet; And
Closing degree of the flow rate control valve is adjusted based on a difference between a first temperature and a target temperature corresponding to the first temperature information and a degree of opening and closing of the flow rate control valve and a difference between the first temperature and the target temperature Calculating a heating capacity of the first heater and the second heater on the basis of the first temperature and the second temperature, driving the first heater and the second heater with the calculated heating capacity, And controlling a degree of opening / closing of the flow control valve based on a difference between the target temperature and the target temperature;
And the hot water supply device.
14. The apparatus of claim 13,
And regulates the heating capacity of the second heater based on a difference between the second temperature and the target temperature.
delete 14. The apparatus of claim 13,
When the target temperature is equal to or higher than the first reference temperature,
And drives the first heater and the second heater at a maximum heating capacity.
14. The apparatus of claim 13,
When the target temperature is less than the first reference temperature and is equal to or higher than the second reference temperature,
The heating capacity of the second heater is set to a value corresponding to a heating capacity of the first heater, an opening / closing degree of the flow control valve, and a difference between the target temperature and the first temperature, And drives the second heater with the calculated heating capacity.
14. The apparatus of claim 13,
When the target temperature is lower than the second reference temperature,
The heating capacity of the second heater is calculated using the degree of opening and closing of the flow control valve and the difference between the target temperature and the first temperature by turning off the first heater, And the second heater is driven.
14. The apparatus of claim 13,
Up capacity of the first heater and the second heater based on the degree of opening and closing of the flow control valve and the difference between the first temperature and the target temperature, And a heating capacity of the second heater.
14. The apparatus of claim 13,
Wherein the degree of opening and closing of the flow control valve is reduced in proportion to a difference between the first temperature and the target temperature.
14. The apparatus of claim 13,
And adjusting a degree of opening / closing of the flow control valve by using a first look-up table for the degree of opening and closing of the flow control valve according to a difference value between the first temperature and the target temperature.
14. The apparatus of claim 13,
Wherein the degree of opening and closing of the flow control valve is reduced in proportion to a difference between the second temperature and the target temperature.
14. The apparatus of claim 13,
And a degree of opening / closing of the flow control valve is adjusted by using a third look-up table for the degree of opening and closing of the flow control valve according to a difference value between the second temperature and the target temperature.
14. The apparatus of claim 13,
A degree of opening and closing of the flow rate control valve is calculated based on a difference between the first temperature and the target temperature, and the degree of opening and closing of the flow rate control valve and the difference between the first temperature and the target temperature Calculating a heating capacity of the first heater and the second heater on the basis of a difference between the first temperature and the target temperature based on a difference between the first temperature and the second temperature, Property shipment;
A heater controller for driving the first heater and the second heater according to the calculated heating capacity; And
A flow rate control valve controller for controlling the flow rate control valve according to the calculated degree of opening / closing; And the hot water supply device.
25. The apparatus of claim 24,
When the target temperature is equal to or higher than the first reference temperature,
And the heating capacity of the first heater and the second heater is set to the maximum heating capacity.
25. The apparatus of claim 24,
When the target temperature is less than the first reference temperature and is equal to or higher than the second reference temperature,
The heating capacity of the first heater is set as the maximum heating capacity,
Wherein the heating capacity of the second heater is calculated based on the heating capacity of the first heater, the opening and closing degree of the flow control valve, and the difference between the first temperature and the target temperature.
25. The apparatus of claim 24,
When the target temperature is lower than the second reference temperature,
The heating capacity of the first heater is set to 0,
And calculates the heating capacity of the second heater based on the opening and closing degree of the flow control valve and the difference between the first temperature and the target temperature.
25. The apparatus of claim 24,
Up capacity of the first heater and the second heater based on the degree of opening and closing of the flow control valve and the difference between the first temperature and the target temperature, And a heating capacity of the second heater.
25. The apparatus of claim 24,
Wherein the degree of opening / closing is calculated using a first look-up table for the degree of opening and closing of the flow control valve according to a difference between the first temperature and the target temperature.
25. The apparatus of claim 24,
And a degree of opening / closing of the flow control valve is adjusted by using a third look-up table for the degree of opening and closing of the flow control valve according to a difference value between the second temperature and the target temperature.
The water purifier according to any one of claims 13, 14, 16 and 30, comprising the hot water supply device.
KR1020150071840A 2015-05-20 2015-05-22 Apparatus and method for supplying hot water and water purifier having the same KR101897574B1 (en)

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US15/575,742 US10604399B2 (en) 2015-05-20 2016-04-29 Hot water supply method, hot water supply device, and water purifier using same
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